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Ribbon slitting machines for the next five years: fully automatic, flexible line, digital twin

With thermal transfer printing technology continuously penetrating logistics, healthcare, retail, manufacturing, and other fields, carbon ribbons (heat transfer color ribbons), as key consumables, are facing unprecedented challenges in manufacturing precision and production efficiency. The ribbon slitting machineâthis core device that cuts wide master rolls into narrow rolls adapted to d...

Small batch customization is no longer difficult: the quick order change technology of hot stamping foil slitting machines

With personalized consumption and short-cycle production becoming mainstream, the packaging, printing, and hot stamping processing industries are facing unprecedented challenges. In the past, large-batch orders were the main source of profit, while the demand for small-batch, multi-variety hot stamping foil customization was often seen as "useless"âsmall order amounts, frequent order cha...

Energy savings by 30%! Revealing the green technology of the new generation ribbon slitting machine

In the field of heat transfer printing, carbon ribbons, as key consumables, have long been overlooked by the industry in their energy efficiency performance during slitting. The energy waste generated by traditional slitting equipment during high-speed operation has become an invisible bottleneck restricting companies from reducing costs and improving efficiency. Now, with breakthroughs in...

Ribbon slitting machine technological innovation: breakthroughs in both precision and efficiency

With the increasing popularity of thermal transfer printing technology today, ribbons are core consumables, and their cutting quality directly affects print performance and user cost control. In recent years, with the integration and application of automation control, precision machinery, and intelligent inspection technologies, ribbon slitting machines have undergone a critical technologi...

How PET Film Slitting Machines Eliminate Tensile Deformation and Wrinkles

In the production and application of PET film, the slitting stage is one of the key processes that determines the quality of the final product. As the requirements for film thickness in consumer electronics, optical displays, and new energy continue to decrease (such as ultra-thin films with a thickness of < 6Îm), improper tension control, mechanical structure limitations, or unreasona...

Say goodbye to uneven winding: PET film slitting machines improve end face flatness

In the film processing industry, PET film is widely used in packaging, electronics, photovoltaics, and other fields due to its excellent mechanical properties, heat resistance, and optical properties. However, in the slitting stage, a seemingly subtle but far-reaching issue has long troubled manufacturersâuneven winding and uneven ends. This not only affects product appearance but also d...

Anti-roll edge stamping gold foil slitting machine: an adaptive winding and compression roller solution

Abstract[/SIZE][/FONT]During the slitting process of hot stamping foil, warping of the winding edge (edge curling) is a core problem that leads to material waste and reduced production efficiency. Based on the thinness, high ductility, and thermal sensitivity characteristics of hot stamping foil, this paper analyzes the mechanical causes of edge curling and proposes an adaptive winding and compression roller solution integrating automatic pressure adjustment, real-time edge detection, and dynamic roller surface shaping. By integrating pneumatic servo control with intelligent sensing, the company achieves a leap from "passive deviation correction" to "active roll suppression," significantly improving the slitting yield.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/1016e8339bd56fc.jpg[/IMG][/SIZE][/FONT]1. Pain points of gold foil slitting and curling edges[/SIZE][/FONT]Hot stamping foil (electrochemical aluminum) is made by composing PET base film, release layer, color layer, and aluminum plating layer, with a total thickness of only 12â30Îm. During high-speed slitting (150â300 m/min), three major edge curling factors emerge during the winding stage:[/SIZE][/FONT]â Edge stress concentration: The slitting blade causes fine burrs or stretching deformation at the edge of the foil strip, leading to edge loosening and then rolling up or down under the action of the rewinding pressure roller.[/SIZE][/FONT]â Static electricity and film effect: High-speed friction generates static electricity, causing the foil layers to repel each other; At the same time, high-speed airflow forms an air film between the foil belt and the pressure roller, reducing contact pressure and preventing effective compression at the edges.[/SIZE][/FONT]â Uneven roller surface contact: Traditional rigid or fixed soft pressure rollers cannot adapt to transverse thickness fluctuations of the foil strip (slight bulging at the edges of each strip after slitting), and when pressure distribution is constant, the edge forces are insufficient.[/SIZE][/FONT]Once edge curling occurs, it can cause wrinkles, broken bands, and multilayer adhesion, and in severe cases, the entire roll can be scrapped. Statistics show that about 30% of slitting loss in hot stamping foil comes from the edge of the winding process.[/SIZE][/FONT]2. Core architecture of the adaptive winding roller[/SIZE][/FONT]This solution breaks the traditional idea of "pressing rollers only axial compaction," designing the rewinding rollers as a perceptible, deformable, and adjustable closed-loop system. The overall architecture is divided into three layers (Figure 1 for illustration, described here):[/SIZE][/FONT]Layer 1: Edge rolled edge online perception[/SIZE][/FONT]â Each slitting strip is equipped with miniature laser displacement sensors or opposed photoelectric edge detection modules to measure the height difference between the foil strip edge and the roller surface in real time (resolutionâ0.01mm).[/SIZE][/FONT]â Simultaneous embedding of electrostatic sensors and speed synchronous encoders to determine whether curling is caused by static electricity or gas film.[/SIZE][/FONT]Layer 2: Pressure Adaptive Control Unit[/SIZE][/FONT]â The pressure roller adopts a segmented pneumatic bladder structureâeach slitting bar has an independent airbag chamber, and the pressure in each chamber is independently controlled by a proportional pressure regulating valve.[/SIZE][/FONT]â The controller applies additional pressure to the chamber on the rolled side (e.g., from the reference 0.2MPa to 0.28MPa) based on the edge height difference signal, dynamically counteracting edge upward tilt.[/SIZE][/FONT]Layer 3: Roller surface shape adaptive mechanism[/SIZE][/FONT]â The roller surface is covered with a polyurethane elastic layer (Shore A 20â30), embedded with a miniature hydraulic actuator array. When a certain edge is continuously rolled down (reverse curling), the push rod array can locally slightly converge, 0.1â0.5mm, forming a "reverse support" curved surface to geometrically correct the foil strip edge path.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/6def7b3b56be4e4.jpg[/IMG][/SIZE][/FONT]3. Key workflows and algorithms[/SIZE][/FONT]Dynamic scroll suppression logic[/SIZE][/FONT]1. Initial learning: The equipment is idling or slow (20m/min) for trial cutting, recording the natural warping trend of the edge of each slitting strip, and generating a "crimped edge feature curve".[/SIZE][/FONT]2. Real-Time Feedback Control:[/SIZE][/FONT]◦ If the edge lift is > set threshold (e.g. 0.15mm), the corresponding air bag pressure increases, and the increment ÎP = KpÂ (Lifting amount) + KiÂâLifting amountÂdt;[/SIZE][/FONT]◦ At the same time, check whether the electrostatic voltage exceeds 2kV, and if so, start the grounding static elimination brush of the pressure roller.[/SIZE][/FONT]3. Roll surface shaping: For periodic crimping (such as caused by blade wear), activate the hydraulic actuator array to form a local boss to physically press the edge to avoid excessive pressure and cause indentation on the foil surface.[/SIZE][/FONT]Anti-overvoltage protection[/SIZE][/FONT]Through the thin film pressure sensor on the roller surface (range 0â0.5MPa), it prevents excessive chamber pressure from causing lateral stretching deformation of the foil strip or damage to the base film. The maximum pressure limit does not exceed 0.35MPa.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/b7db5710fe66073.jpg[/IMG][/SIZE][/FONT]4. Comparison of implementation results[/SIZE][/FONT]At a hot stamping foil manufacturing plant, actual measurements were conducted on PET-based electrochemical aluminum slitting (20 stripsÃ 40mm width) with widths of 800mm and 12Îm:[/SIZE][/FONT][/SIZE][/FONT]IndicatorsTraditional rigid silicone press rollerAdaptive roller compression schemeImprovement rateWinding edge warping rate (%)12.71.885.8%Number of downtime for broken tape/edge rolling (times/shift)5.40.688.9%Winding end face neatness (mm deviation)Â1.2Â0.375%Whole Volume Scrap Rate (%)4.60.784.8%[/SIZE][/FONT]Additionally, this solution allows for a reduction of about 15%â20% in winding tension (since the curling edge is actively suppressed, eliminating the need for high-tension edge flattening), further reducing the stretching deformation of the foil strip.[/SIZE][/FONT]5. Economy and applicability[/SIZE][/FONT]â Retrofit cost: Adding modular adaptive pressure roller units (including sensors, pneumatic bags, and controllers) to the existing slitting machine winding station costs about 8%â12% of the total machine price.[/SIZE][/FONT]â Payback period: Based on an average of 8 hours per day and a 3.9 percentage point reduction in scrap rate, the loss of hot stamping foil can be reduced by about 1.2 tons per year (unit price 80 yuan/kg), and the payback period is about 6-10 months.[/SIZE][/FONT]â Scope of application: In addition to hot stamping foil, it is also suitable for winding aluminum foil, capacitive film, heat transfer film and other thin and easy-to-curl materials.[/SIZE][/FONT]6. Conclusion[/SIZE][/FONT]The adaptive winding and pressing roller solution of the anti-rolling hot stamping foil slitting machine fundamentally solves the industry's stubborn problem of thin foil winding edge instability through local pressure dynamic compensation, roll surface shape fine-tuning and multi-sensor fusion detection. This technology changes the traditional "relying on operator experience to adjust the pressure of the roller" to "automatic closed-loop suppression", which has significant value in improving product consistency, reducing manual intervention, and reducing waste. In the future, combined with AI hemming trend prediction, predictive pressure adjustment can be further realized and move towards fully intelligent slitting and winding.[/SIZE][/FONT]

From frequent downtime to continuous production: improved stability of thermal transfer ribbon slitting machines

In the production process of heat transfer ribbons, slitting is a key step in slicing wide, large roll master rolls into small rolls of specific widths and lengths according to customer requirements. The operational stability of the slitting machine is directly related to delivery times, costs, and product quality. For a long time, our ribbon slitting machines frequently experienced unplan...

Anti-static hot stamping foil slitting machine: eliminate scratches and adsorption of impurities on the foil surface

In the foil stamping and packaging industry, the surface quality of foil stamping directly affects the visual effect and yield rate of the final product. When traditional slitting equipment processes high-precision hot stamping foil, it often causes scratches, ink layer peeling or incomplete hot stamping due to static electricity, mechanical friction or impurity adsorption. The anti-static...

High-speed hot stamping foil slitting machines: the balance between efficiency and neatness

In the production process of hot stamping foil, slitting is a key link that determines the yield and user experience. On the one hand, enterprises pursue higher line speeds and shorter rewinding times to increase production capacity; On the other hand, the neatness of winding directly affects the unwinding stability of downstream hot stamping - a slight discrepancy may cause stuttering, wr...

How the ribbon slitting machine improves slitting accuracy and reduces material loss

In the field of thermal transfer printing, the quality of ribbons (thermal transfer ribbons) directly determines the printing effect, and ribbon slitting machines are key equipment for processing large rolls of raw materials into narrow finished products suitable for different printers. With the increasing requirements for carbon band width tolerance, end face flatness and material utiliza...

The ribbon slitting machine solves the problem of uneven winding caused by unstable tension

In the production process of thermal transfer ribbons, slitting is a key process. It slices wide large coil ribbons into narrow small coils required by customers. However, common "uneven winding" issues in the slitting processâmanifested by uneven end faces, raised or collapsed ribbon edgesânot only affect aesthetics, but also directly lead to cassettes, broken bands, or print offsets ...

How to prevent gold leaf sticking caused by static electricity by hot stamping foil slitting machine

In the production and slitting process of hot stamping foil, static electricity is a common and tricky problem. The hot stamping foil itself is composed of a multi-layer structure such as a carrier film (usually PET polyester film), a release layer, a color layer, and an adhesive layer, and its material characteristics determine that it is very easy to accumulate static charges during high...

Micron-level contest: How does the hot stamping foil slitting machine completely end the "burr" problem?

In the hot stamping workshop of cigarette packs, wine boxes, and luxury packaging, this is the scene that quality managers are most afraid to see: after the high-speed embossing of the valuable hot stamping foil, there is a slight "gold powder" tail or jagged notch on the edge of the pattern. This defect, known as "flying gold" or "burrs", is often not attributed to the pressure or tempera...

Say goodbye to material folding: the hot stamping foil slitting machine improves the flatness of win

In the production and post-processing of hot stamping foil, slitting is a crucial process. However, many businesses face a long-term headache â wrinkled, arched, or uneven edges of the material after rewinding. These seemingly subtle defects can directly lead to subsequent hot stamping failures, increased scrap rates, and even affect the entire production cycle.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/6def7b3b56be4e4.jpg[/IMG][/SIZE][/FONT]Where do folds come from?[/SIZE][/FONT]To solve the problem, we must first find the root cause. Wrinkles occur during the slitting process of hot stamping foil, which is usually caused by the following reasons:[/SIZE][/FONT]â Uneven tension control: The tension fluctuates between unwinding, unwinding, and rolling, resulting in uneven tightness of the material on the rewinding shaft and creases formed by slipping between layers.[/SIZE][/FONT]â Improper winding roller: The pressure of the roller is unreasonably set or the parallelism of the roller surface is deviated, so that the air cannot be discharged evenly, and bubble-like bulges occur on the surface of the material.[/SIZE][/FONT]â Slitting knife edge burrs: Blade wear or poor edge angle, resulting in tiny burrs or curling edges on the cutting edges, which are concentrated on these parts when rewinding, causing wrinkles.[/SIZE][/FONT]â Static electricity accumulation: The hot stamping foil material itself is prone to static electricity, which absorbs dust and makes the layers repel or stick to each other, destroying the neatness of winding.[/SIZE][/FONT]â Poor match between the core and the material: If the roundness of the core is insufficient or the surface smoothness is not suitable, there will be deviations at the initial winding stage, and it will evolve into serious folds after enlarging layer by layer.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/c65654efcb9697d.jpg[/IMG][/SIZE][/FONT]Start from the root: key techniques to improve the flatness of winding[/SIZE][/FONT]In response to the above crux, modern hot stamping foil slitting machines are effectively solving the problem of wrinkles through a series of technological upgrades.[/SIZE][/FONT]1. Closed-loop tension control system[/SIZE][/FONT]Servo motors are used with floating rollers or tension sensors to monitor and automatically adjust the unwinding, traction and rewinding tension in real time. The system can preset the tension curve for different thicknesses and widths of hot stamping foil to ensure constant tension throughout the whole process from the core to the full roll, eliminating the situation of different tightness.[/SIZE][/FONT]2. Precision winding and roller mechanism[/SIZE][/FONT]Equipped with adjustable pressure, actively driven winding rollers, the surface of the rollers is wrapped in highly elastic and anti-static materials. The roller is kept in precise parallel to the winding shaft and provides a pressure curve that decreases with the increase of the roll diameter - the pressure decreases when the coil is large to avoid "crushing" the air between the material layers; The pressure increases slightly during small rolls to ensure a tight start.[/SIZE][/FONT]3. High-quality slitting knife set[/SIZE][/FONT]Imported alloy circular knife or razor type slitting system is adopted, with automatic sharpening or quick-change tool holder, always keep the cutting edge sharp. The cut edges are flat and burr-free, avoiding crimping and wrinkling caused by poor incisions at the source.[/SIZE][/FONT]4. Static elimination and cleaning device[/SIZE][/FONT]AC or pulsed DC static elimination rods are installed at the key passing rollers, and with dust removal brushes or suction devices, they can effectively remove static electricity and dust on the surface of the material. The elimination of static electricity keeps the foil layers in a natural separation state, allowing air to be discharged smoothly during winding.[/SIZE][/FONT]5. Quick positioning and automatic correction of the core[/SIZE][/FONT]It adopts a cone top or airbag type coil fixture to ensure that the coil core is centered and there is no deviation in roundness. With ultrasonic or photoelectric correction system, the edge position of the material is tracked in real time, and the lateral deviation is automatically corrected to ensure that the winding end face is as neat as a knife.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/d1c0d8b3470af6a.jpg[/IMG][/SIZE][/FONT]Practical Results: The data proves everything[/SIZE][/FONT]After a hot stamping foil manufacturer introduced a new high-precision slitting machine, the indicators before and after the improvement were compared:[/SIZE][/FONT]â The rate of wrinkle defects has been reduced from 3.8% to less than 0.3%[/SIZE][/FONT]â The maximum winding diameter has been increased from 400mm to 600mm, while still remaining flat[/SIZE][/FONT]â The deviation of the neatness of the winding end face is controlled within Â0.5mm[/SIZE][/FONT]â 85% reduction in downtime due to material folding in subsequent hot stamping processes[/SIZE][/FONT]The person in charge of the production line said: "In the past, I was worried every time I went to the slitting link, but now I can basically achieve continuous production without frequently checking the quality of the winding. â[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/b7db5710fe66073.jpg[/IMG][/SIZE][/FONT]Future trend: smarter and more refined[/SIZE][/FONT]With the development of industrial Internet and sensor technology, hot stamping foil slitting equipment is evolving in the direction of intelligence. For example:[/SIZE][/FONT]â AI Tension Self-Learning: The device automatically generates optimal tension parameters based on historical data and current material properties.[/SIZE][/FONT]â Online wrinkle detection: Through industrial cameras and image algorithms, real-time identification of micro-folds on the winding surface and alarm adjustment.[/SIZE][/FONT]â Predictive maintenance: Monitor blade wear status, pressure distribution of rollers, etc., and warn of maintenance needs in advance.[/SIZE][/FONT]Epilogue[/SIZE][/FONT]Saying goodbye to material folds is not only to improve the yield rate of a process, but also to ensure the overall competitiveness of hot stamping foil products. From tension closed-loop control to precision roller design, from static elimination to automatic deviation correction, the optimization of each technology is working towards the same goal - so that each roll of hot stamping foil is rolled up smoothly and out of the warehouse without worry, and finally blooms with a perfect metallic luster in the hot stamping process.[/SIZE][/FONT]For hot stamping foil manufacturers, choosing a slitting machine with good winding flatness control is actually building a solid quality defense line for the entire production chain. After all, when the material enters the next process in a flat state, everything is possible to proceed smoothly.[/SIZE][/FONT]

Adjustment skills of the rewinding roller of the ribbon slitting machine: solve the uneven end face and collapse of the coil

During the slitting process of ribbon (heat transfer ribbon), the winding quality directly determines the appearance of the finished product, transportation stability, and the user experience. Among them, uneven end faces and collapsed coils are the two most common quality defects. Experience shows that more than 80% of winding problems are related to improper adjustment of the pressing ro...

Anti-scratch and anti-static: the key points of the application of ribbon slitting machine in high-end barcode ribbons

In the field of barcode printing, the quality of high-end barcode ribbons directly affects the printing effect and readability of barcodes. With the improvement of industrial automation, the market has put forward more and more stringent requirements for ribbon slitting accuracy, surface quality, and electrostatic control capabilities. As a key equipment for processing wide master coils in...

Hot stamping foil slitting machine winding and wrinkling? Adjusting the press roller and tension curve is key

In hot stamping foil production, winding and wrinkling after slitting are common quality defects, directly affecting yield and production efficiency. The essence of wrinkling is that the foil surface causes uneven slippage or extrusion deformation during the winding process. To solve this problem, it is usually necessary to start from two dimensions: roller state and tension control.[/SIZE][/FONT]Analysis of wrinkle causes[/SIZE][/FONT]The thickness of the hot stamping foil is only 12â30 Îm, and the surface is coated with a release layer and an adhesive layer, which is extremely sensitive to tension and contact pressure. There are three main types of causes of winding and wrinkling:[/SIZE][/FONT]â Roller Factors: Uneven surface hardness, non-parallel axis or rubber aging lead to uneven lateral pressure distribution on the foil surface, resulting in micro-folds and amplification layer by layer.[/SIZE][/FONT]â Improper tension curve: The taper tension curve is set unreasonably, and the tension of the outer layer of the winding layer is too large or the tension of the inner layer is insufficient, resulting in slippage and wrinkling between layers.[/SIZE][/FONT]â Mechanical vibration and guide roller deflection: During high-speed slitting, the vibration of the equipment causes the foil surface to instantly relax, superimposing the unstable pressure roller contact force, causing random wrinkles.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/0df345a0e6b1108.jpg[/IMG][/SIZE][/FONT]Adjustment method of the pressure roller[/SIZE][/FONT]The press roller is used to press the hot stamping foil against the winding core, expelling the air between the layers and providing frictional traction. The key points of adjustment are as follows:[/SIZE][/FONT]1. Check the parallelism of the press roller: Use a feeler gauge or laser centering instrument to ensure that the axis of the roller is parallel to the axis of the winding shaft, and the left and right pressure deviation is controlled within 0.05mm/m. The non-parallelism will cause the foil surface to be tight on one side and loose on the other side, and the loose side is easy to wrinkle.[/SIZE][/FONT]2. Optimize the hardness and adhesion of the roller: The hot stamping foil should be made of polyurethane or nitrile rubber rollers with a hardness of HS 60â75, and the surface should be ground to Ra 0.8â1.6Îm. Overly hard rollers cannot adapt to fluctuations in foil thickness, and too soft rollers are prone to deformation and uneven pressure.[/SIZE][/FONT]3. Adjust the pressure and lifting timing of the roller: reduce the pressure of the roller to the minimum value that just eliminates the air between the layers (usually the line pressure is 10â30 N/cm). At the same time, the roller is set to contact the core before the winding start, and lift it when it stops to avoid wrinkles formed by instantaneous impact.[/SIZE][/FONT]4. Floating roller mechanism: For high-end slitting machines, a floating roller that automatically adjusts the position with the change of roll diameter can be installed to always maintain a constant wrapping angle and contact pressure, greatly reducing the probability of wrinkling.[/SIZE][/FONT]Optimization strategy of tension curve[/SIZE][/FONT]The tension curve refers to the law that the winding tension changes with the increase of the coil diameter. The most commonly used taper tension control for hot stamping foil is:[/SIZE][/FONT]â Taper coefficient selection: The typical initial tension is 8%â12% of the material breaking tension, and the end tension is 40%â70% of the initial tension. The taper coefficient K is generally 0.5â0.8. If the coefficient is too small, the outer layer tension is too large, and the inner layer will be squeezed to produce chrysanthemum core-like folds; if the coefficient is too large, the inner layer will relax and cause collapse and wrinkling.[/SIZE][/FONT]â Segmented tension control: A more advanced solution is to divide the winding process into starting section (0â20% coil diameter), constant tension section (20%â70% coil diameter), and taper descending section (70%â100% coil diameter). The starting section uses lower tension to ensure the flatness of the core; the constant tension section maintains a stable interlayer pressure; the taper descending section gradually reduces the tension to compensate for the weight of the outer ring.[/SIZE][/FONT]â Combined with roller pressure linkage adjustment: In high-end slitting machines, the roller pressure is coupled with the winding tension in proportion. When the tension taper decreases, the pressure of the roller is reduced synchronously to avoid the contradictory state of "small outer tension and high pressure of the roller", which is the common cause of wrinkling of the foil.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/d1c0d8b3470af6a.jpg[/IMG][/SIZE][/FONT]Practical Cases and Verification[/SIZE][/FONT]A hot stamping foil enterprise slitted 12Îm PET-based hot stamping foil, and longitudinal dead folds frequently appeared when the winding diameter was 400mm. After testing, it was found that the pressure difference between the left and right sides of the pressure roller reached 18N (set to 60N), and the tension curve was constant tension mode (200N constant).[/SIZE][/FONT]Adjustment steps:[/SIZE][/FONT]1. Re-correct the parallelism of the roller, and adjust the left and right pressure to 60Â3N;[/SIZE][/FONT]2. Change the tension curve to taper control: the initial tension is 180N, the taper coefficient is 0.65, and the termination tension is about 70N;[/SIZE][/FONT]3. The pressure of the roller decreases linearly from 50N to 20N with the diameter of the roll.[/SIZE][/FONT]After adjustment, 10 rolls are continuously produced, each roll has a length of 6000m, the wrinkling rate is reduced from 12.7% to less than 0.8%, the winding end face is neat, and the flatness of the foil surface meets the requirements of hot stamping.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/b083e07fdfbfb4b.jpg[/IMG][/SIZE][/FONT]Quick Troubleshooting List[/SIZE][/FONT]When a wrinkling occurs, it can be quickly located in the following order:[/SIZE][/FONT][/SIZE][/FONT]Characteristics of the phenomenonPriority inspection itemsOnly the core is wrinkledThe starting tension is too large or the pressure roller is in early contactOnly the outer ring is wrinkledSmall taper coefficient (too much outer tension)The whole volume is wrinkled randomlyThe hardness of the pressure roller is uneven or the guide roller is not parallelPeriodic wrinklesThe roller is eccentric or the rewinding shaft vibratesWrinkled on one sideThe parallelism of the pressure roller is excessive[/SIZE][/FONT]Epilogue[/SIZE][/FONT]The slitting and wrinkling of hot stamping foil is essentially the result of the mismatch between the mechanical constraint (roller) and the mechanical boundary (tension curve). Priority is given to calibrating the parallelism and surface state of the roller, and then designing a reasonable taper tension curve based on the characteristics of the foil, and introducing linkage control of roller pressure and tension if necessary. Through the fine adjustment of these two core parameters, most of the winding and wrinkling problems can be effectively solved, thereby improving the slitting quality and production efficiency of foil stamping.[/SIZE][/FONT]

How often should ribbon slitting machine blades be replaced? Maintenance interval vs. cost comparison table

In the ribbon production process, the slitting machine blade is a key component that directly affects the quality and production efficiency of slitting. Whether the blade is sharp directly determines whether the ribbon edge is smooth, whether it produces burrs, and the amount of dust during slitting. So, how often should the ribbon slitting machine blade be replaced? This article will sort...

PET film slitting machine solves film breakage: tips for matching joints and speeds

During the slitting process of PET film, film breakage is a headache for many operators. Once the film breaks occurs, it will not only affect production efficiency, but also cause waste of raw materials and even damage equipment blades. There are many reasons for film breakage, among which improper joint handling and speed matching imbalance are the two most common and overlooked key facto...

Solar film slitting machine slow to change rolls? Operation method with 30% increase in efficiency

In the production and processing of solar film slitting machine rewinding link is often the "invisible bottleneck" of the entire production line - the equipment does not stop, but the rewinding is stopped for a few minutes, and the cumulative loss of effective production time per day may be as high as 1-2 hours. If your slitting machine takes more than 3 minutes to change the roll at a tim...

Reduction strategy for ribbon slitting machine tailings waste

In the production process of thermal transfer ribbons, slitting is a critical part of the quality and cost of the final product. The slitting machine tailings â the remaining parts of each ribbon that are slitted to the end that cannot be processed â have long been considered "necessary losses", but in reality, this waste has great potential. Let's start with a cause analysis and explo...

How to deal with excessive dust in the ribbon slitting machine? Comprehensive solution analysis

In the production and processing of ribbons (thermal transfer ribbons), the slitting machine is one of the core equipment. However, many operators encounter a tricky problem â excessive dust when ribbon slitting. These fine dusts not only affect the workshop environment and threaten the health of operators, but also may reduce the accuracy of equipment and affect the quality of the finis...

Where to change the low efficiency of the ribbon slitting machine? These 7 directions are worth digging deeper

In the production process of thermal transfer ribbons, slitting is a critical process that determines capacity, yield, and lead time. Many enterprises encounter the problems of long-term low efficiency of slitting machines, slow order change, and high scrap rate, and often consider replacing equipment first, but in fact, most bottlenecks can be broken through systematic optimization.[/SIZE][/FONT]The following is a feasible direction for improving the efficiency of ribbon slitting machine from the four dimensions of equipment, process, operation and management.[/SIZE][/FONT]1. Can't the slitting speed go up? Let's look at the tension control of the retraction and unwinding first[/SIZE][/FONT]The efficiency of the ribbon slitting machine is low, and the most direct manifestation is "not fast opening". Many equipment is designed to have a maximum speed of 300m/min or even higher, but it can only run to 100-150m/min in actual operation, and no matter how high it is, there will be wrinkles, deviations, and uneven end faces.[/SIZE][/FONT]The reason is often in the tension control system:[/SIZE][/FONT]â Unstable damping of the unwinding shaft: The mechanical brake or magnetic particle brake is aging, resulting in the unwinding tension fluctuating between large and small, and the equipment can only slow down to maintain stability.[/SIZE][/FONT]â Improper setting of winding taper tension: With the increase of the coil diameter, the winding tension does not decrease proportionally, resulting in internal tightness and external looseness or internal looseness and external tightness, which affects the operation stability.[/SIZE][/FONT]â Slow response of tension sensors: The analog tension control system of old equipment lags in response and cannot adapt to dynamic changes during high-speed slitting.[/SIZE][/FONT]Direction of improvement: check brake/clutch wear, calibrate tension sensors regularly; If possible, it can be upgraded to a closed-loop automatic tension control system, and with low inertia guide rollers, it can usually increase the stable operating speed by 30%-50%.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202512/9636f944ce4778d.jpg[/IMG][/SIZE][/FONT]2. Does it take too long to change orders? Optimize the tool holder and tool arrangement method[/SIZE][/FONT]Ribbon slitting requires frequent replacement of slitting specifications, and when switching orders of different widths and diameters, tool change and tool rowing time are the core factors affecting the comprehensive efficiency.[/SIZE][/FONT]Common Inefficient Scenarios:[/SIZE][/FONT]â It takes 30-40 minutes to change a specification, most of which is spent disassembling and assembling the blade, measuring the tool spacing, and adjusting the angle.[/SIZE][/FONT]â Blades are troublesome to replace after wear, and even require special tools to disassemble and assemble multiple screws.[/SIZE][/FONT]Improvement direction:[/SIZE][/FONT]â Pneumatic or quick-lock tool holder for tool-free blade positioning.[/SIZE][/FONT]â Introduce CNC tool rowing system, the tool holder automatically moves to the set position after entering the slitting width, and the tool rowing time can be shortened from 20 minutes to 2-3 minutes.[/SIZE][/FONT]â Two sets of tool sets, external pre-arranged knives, and the whole set is replaced.[/SIZE][/FONT]3. Deviation, uneven end face? Check the accuracy of correction and guide rollers[/SIZE][/FONT]The deviation of the ribbon during the slitting process will lead to an increase in leftovers, excessive slitting width, and even scrapping of the whole roll. Efficiency losses often come not from downtime, but from repeated adjustments and scrap rejection.[/SIZE][/FONT]Common Causes:[/SIZE][/FONT]â Reduced sensitivity of ultrasonic/photoelectric guidance sensors or unreasonable detection point positions.[/SIZE][/FONT]â Guide roller parallelism exceeds the standard: After long-term use, the bearings at both ends of the guide roller wear out, resulting in lateral drift of the ribbon during operation.[/SIZE][/FONT]â Surface wear or viscosity of guide rollers: increase friction unevenness.[/SIZE][/FONT]Improvement direction: check whether the correction system is sensitive every month, clean the sensor lens; Use a level to check the parallelism of the guide rollers; Guide rollers that are easy to adhesive can be replaced with anti-stick coatings or ceramic guide rollers with a low coefficient of friction.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/1c5f03c8cb73eba.jpg[/IMG][/SIZE][/FONT]4. Uneven winding end face? The coiling method should match[/SIZE][/FONT]The winding quality after ribbon slitting directly affects the downstream printer experience and the continuous operation efficiency of this process. When the end face is severely uneven, the equipment will automatically slow down or alarm to stop.[/SIZE][/FONT]The core lies in the choice of winding method:[/SIZE][/FONT]â Center coiling is suitable for thicker ribbons with better stiffness, but thin ribbons are prone to inner wrinkles.[/SIZE][/FONT]â Surface coiling is more friendly to thin materials, but requires proper pressure rollers and contact pressure regulation.[/SIZE][/FONT]Improvement direction: according to the thickness and type of ribbon substrate mainly processed, choose the appropriate winding method; For production lines with variable specifications, it is recommended to use the combined winding of center + surface, which can be quickly switched according to the material characteristics.[/SIZE][/FONT]5. Low degree of automation? Complementary accessibility[/SIZE][/FONT]Many old-fashioned ribbon slitting machines rely on manual operation, from film threading, meter counting to rolling and labeling, which requires manual intervention, which is not only slow, but also varies from person to person.[/SIZE][/FONT]Automation upgrades to consider:[/SIZE][/FONT]â Automatic film threading/film guide system: reduces film threading time after each reel change.[/SIZE][/FONT]â Automatic meter counting and fixed length stop: Precise control with frequency converter to avoid over-cutting or under-cutting.[/SIZE][/FONT]â Automatic unwinding and unwinding device: reduce manual rewinding and handling time.[/SIZE][/FONT]â Automatic printing and application of barcodes/labels: Interfaces with production systems to reduce manual marking and verification.[/SIZE][/FONT]These transformations are not very expensive, but they can significantly reduce the auxiliary time, especially suitable for multi-variety and low-batch production modes.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/0ad663a781d6.jpg[/IMG][/SIZE][/FONT]6. The scrap rate remains high? Blade life and angle are key[/SIZE][/FONT]Slitting efficiency is not only based on speed, but also on the pass rate. Scrapping due to burrs, powder drops, scratches, and sticking caused by slitting is essentially a loss of efficiency.[/SIZE][/FONT]Blade problems are the most common:[/SIZE][/FONT]â If the round knife or razor is used for too long, the edge becomes dull, the slitting resistance increases, and the edge of the ribbon will have burrs or tensile deformation.[/SIZE][/FONT]â The blade angle does not match the hardness of the ribbon coating.[/SIZE][/FONT]Improvement direction: Establish a blade service life ledger, replace it regularly according to the number of meters or rolls slit, and do not wait until there is a problem before replacing it; Choose the appropriate blade material and edge angle for different types of ribbons (wax-based, mixed-based, resin-based); A special sharpener can be introduced to regularly regrind the resharpable blade.[/SIZE][/FONT]7. Hidden waste at the management level[/SIZE][/FONT]Beyond equipment and processes, management factors are often overlooked:[/SIZE][/FONT]â Unreasonable production scheduling: frequently switching between orders of different widths and winding directions, and the number of orders changed is much higher than the theoretical need.[/SIZE][/FONT]â Lack of equipment inspection standards: small problems accumulate into major failures, and sudden shutdowns disrupt production plans.[/SIZE][/FONT]â Operator skills vary greatly: the operating efficiency of different people can vary by more than 30% for the same equipment.[/SIZE][/FONT]Improvement direction: merge the production of orders of the same specification to reduce the frequency of order changes; establish a daily/weekly inspection table to do preventive inspection of tension, deviation correction and blade status; formulate standard operating procedures and conduct systematic training for operators.[/SIZE][/FONT]Summary: Start from the bottleneck and improve step by step[/SIZE][/FONT]To improve the efficiency of ribbon slitting machine, it is not necessary to replace the equipment immediately. It is recommended to evaluate and improve in the following order:[/SIZE][/FONT]1. First, count the order replacement time, running speed, scrap rate, and fault downtime to find the biggest bottleneck at present.[/SIZE][/FONT]2. Priority is given to solving tension control and deviation correction problems, which is the basis for high-speed and stable operation.[/SIZE][/FONT]3. Then make targeted transformations for the links that frequently affect production, such as tool change, tool rowing, and winding.[/SIZE][/FONT]4. Finally, through management optimization and automation assistance, hidden waste is reduced.[/SIZE][/FONT]Usually, without changing the host, a 20%-40% increase in overall efficiency is completely achievable through 2-3 improvements in the above directions. If the system still cannot meet the capacity requirements after system optimization, it is not too late to consider equipment renewal.[/SIZE][/FONT]

The meter meter of the ribbon slitting machine is not allowed to be calibrated

1. Introduction[/SIZE][/FONT]The ribbon slitting machine is a key equipment in the production process of thermal transfer ribbons, and its meter counting accuracy directly affects the length qualification rate of products and the customer's experience. In actual production, due to mechanical wear, tension fluctuations, sensor errors and other factors, the ribbon slitting machine often has the problem of inaccurate meter counting. This article will systematically introduce the common causes of inaccurate meter counting of ribbon slitting machines and the corresponding calibration methods, providing practical reference for equipment maintenance and operators.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/2295433294f073b.jpg[/IMG][/SIZE][/FONT]2. Analysis of common reasons for inaccurate meter counting[/SIZE][/FONT]Before calibration, it is necessary to first identify the root cause of the metering error. According to field experience, it can be mainly summarized into the following categories:[/SIZE][/FONT]1. Mechanical transmission factors[/SIZE][/FONT]â Pressure Wheel Wear: The surface of the meter meter or pressure wheel is unevenly worn, leading to variations in the actual circumference[/SIZE][/FONT]â Bearing jamming: The bearing of the meter wheel is poorly lubricated or damaged, resulting in inflexible rotation[/SIZE][/FONT]â Slippage: The friction between the pressure wheel and the ribbon is insufficient, resulting in relative slippage[/SIZE][/FONT]â Eccentric rotation: The meter wheel is installed eccentric or the wheel itself is elliptical[/SIZE][/FONT]2. Electrical and sensor factors[/SIZE][/FONT]â Insufficient encoder resolution: The selected encoder pulse number does not meet the accuracy requirements[/SIZE][/FONT]â Signal interference: Encoder signals are subject to electromagnetic interference, resulting in lost or multiple pulses[/SIZE][/FONT]â Sensor aging: Proximity switches or photoelectric sensors have slower response times[/SIZE][/FONT]3. Tension and material factors[/SIZE][/FONT]â Excessive tension fluctuations: The tension of the retraction and unwinding is unstable, leading to changes in the degree of tension of the ribbon[/SIZE][/FONT]â Uneven ribbon thickness: Fluctuations in the thickness of the substrate or ink layer affect the actual belt length[/SIZE][/FONT]â Material elasticity differences: Different materials of ribbons have different elastic modulus and different tensile rates[/SIZE][/FONT]4. Control parameter factors[/SIZE][/FONT]â Incorrect pulse equivalent setting: The length parameter corresponding to each pulse in the control system is inaccurate[/SIZE][/FONT]â Insufficient acceleration and deceleration compensation: No effective acceleration and deceleration length compensation is made during the start-stop process[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/ec2d9514a373ffa.jpg[/IMG][/SIZE][/FONT]3. Preparation for meter calibration[/SIZE][/FONT]Before performing the calibration operation, the following preparations should be made:[/SIZE][/FONT]1. Clean meter wheel and pressure wheel: Remove surface oil, toner and foreign matter[/SIZE][/FONT]2. Check the mechanical condition: Confirm that the meter wheel rotates flexibly and the bearing has no abnormal noise[/SIZE][/FONT]3. Calibrate measuring tools: prepare a steel ruler or tape measure that has been metrology verified (accuracy not less than 0.5mm)[/SIZE][/FONT]4. Select test materials: Use ribbons of the same specifications as normal production[/SIZE][/FONT]5. Set the Stable Tension: Ensure that the unwinding and rewinding tensions are within the normal operating range[/SIZE][/FONT]4. Detailed explanation of meter calibration method[/SIZE][/FONT]Method 1: Static perimeter calibration method[/SIZE][/FONT]Principle: Directly measure the actual circumference of the meter wheel and correct the pulse equivalent of the control system.[/SIZE][/FONT]Steps:[/SIZE][/FONT]1. Make a clear mark on the meter wheel[/SIZE][/FONT]2. Manually turn the meter meter wheel to turn the marking point to the starting position of contact with the pressure wheel[/SIZE][/FONT]3. Make ground or rack reference marks at the corresponding position of the wheel flange[/SIZE][/FONT]4. Rotate the meter wheel exactly 10 times to measure the actual straight-line distance L (unit: mm)[/SIZE][/FONT]5. Calculate the actual lap circumference: C_actual = L / 10[/SIZE][/FONT]6. Check the number of pulses per revolution of the encoder P (e.g. 1024 pulses/revolution)[/SIZE][/FONT]7. Calculate the correct pulse equivalent: K_correct = C_actual/P[/SIZE][/FONT]8. Modify the pulse equivalent in the system parameters to K_correct[/SIZE][/FONT]Precautions: The ribbon should be kept tensioned during measurement to avoid errors caused by artificial pulling.[/SIZE][/FONT]Method 2: Dynamic belt calibration method[/SIZE][/FONT]Principle: Through the actual length of the belt, the error coefficient of meter counting is inferred.[/SIZE][/FONT]Steps:[/SIZE][/FONT]1. Attach a visible mark (such as a white sticker) to the start of the ribbon[/SIZE][/FONT]2. Fix a precision steel ruler on the machine and align it with the initial position of the mark at zero scale[/SIZE][/FONT]3. Set the slitting machine to run at normal speed for a theoretical length L_set (e.g. 10 meters)[/SIZE][/FONT]4. After the device is stopped, read the actual distance the mark has moved relative to the ruler L_actual[/SIZE][/FONT]5. Calculate the error factor: Error_ratio = L_actual / L_set[/SIZE][/FONT]6. Multiply the current pulse equivalent by Error_ratio to get the new pulse equivalent[/SIZE][/FONT]7. Repeat the test 2-3 times to confirm the calibration effect[/SIZE][/FONT]Improvement scheme: In order to improve the measurement accuracy, the belt distance of 20 meters or 50 meters can be set, and the error coefficient is averaged multiple times.[/SIZE][/FONT]Method 3: Standard volume comparison method[/SIZE][/FONT]Principle: Calibration is performed using a standard ribbon of known length.[/SIZE][/FONT]Steps:[/SIZE][/FONT]1. Prepare a roll of standard length ribbon (e.g. 100 meters Â0.1%)[/SIZE][/FONT]2. Install the standard ribbon on the slitting machine unwinding reel[/SIZE][/FONT]3. Set the meter target value of the slitting machine as the nominal length of the standard roll[/SIZE][/FONT]4. Stop running the equipment until the meter reaches the set value[/SIZE][/FONT]5. Check the remaining ribbon and judge the actual belt length[/SIZE][/FONT]6. Calculate the error scale and adjust the pulse equivalent parameters[/SIZE][/FONT]Applicable scenarios: high precision requirements, comprehensive calibration before mass production.[/SIZE][/FONT]Method 4: Encoder signal detection method[/SIZE][/FONT]Principle: Use an oscilloscope or frequency meter to detect the signal quality of the encoder and troubleshoot electrical faults.[/SIZE][/FONT]Steps:[/SIZE][/FONT]1. Disconnect the encoder from the controller and connect it to the oscilloscope[/SIZE][/FONT]2. Manually and slowly rotate the meter wheel to observe the signal waveforms of phase A and B[/SIZE][/FONT]3. Check whether the signal amplitude, duty cycle and phase difference are normal[/SIZE][/FONT]4. Run the device at a constant speed and measure signal frequency stability[/SIZE][/FONT]5. Check for signal jitter, glitches or missing pulses[/SIZE][/FONT]6. Replace the encoder or shield the signal line according to the test results[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/84e255cdf990c11.jpg[/IMG][/SIZE][/FONT]5. Targeted treatment of different error types[/SIZE][/FONT][/SIZE][/FONT]Error performancePossible causesRecommended treatmentThe meter value is large and stableThe pulse equivalent is smallStatic perimeter calibration methodThe meter value is small and stableThe pulse equivalent is largeStatic perimeter calibration methodLow speed accuracy, high speed biasInsufficient acceleration and deceleration compensationAdjust the acceleration and deceleration compensation parametersThe number of short meters is accurate, and the number of long meters is biasedCumulative slippageCheck the pressure of the pressure wheel and clean the wheel surfaceThe error fluctuates randomlySignal interference or slippageEncoder signal detection methodOne-way error (forward and reverse)Mechanical clearance or eccentricityReplace meter wheels or bearings[/SIZE][/FONT]6. Verification method after calibration[/SIZE][/FONT]After calibration, validation tests must be performed to ensure that the meter accuracy meets the requirements:[/SIZE][/FONT]1. Three-point verification method: test at low, medium and high speeds respectively to confirm that the speed has no effect[/SIZE][/FONT]2. Multi-stage verification method: test the four length sections of 1 meter, 5 meters, 10 meters, and 50 meters, and calculate the error of each section[/SIZE][/FONT]3. Repeatability Verification: Test the same set length 5 times in a row to evaluate repeatability accuracy[/SIZE][/FONT]4. Acceptance standard: general ribbon slitting requires a meter measurement error of â0.3%, and a â of 0.1% for high-demand products[/SIZE][/FONT]7. Daily maintenance and preventive measures[/SIZE][/FONT]In order to avoid the frequent occurrence of inaccurate meter counting, it is recommended to establish a daily maintenance system:[/SIZE][/FONT]1. Daily inspection: Check the surface cleanliness of the meter wheel before starting the machine to remove foreign objects[/SIZE][/FONT]2. Weekly maintenance: lubricate the meter wheel bearing, check whether the pressure of the pressure wheel is appropriate[/SIZE][/FONT]3. Monthly Calibration: A full calibration is performed using the static perimeter method or the standard roll method[/SIZE][/FONT]4. Quarterly maintenance: disassemble and inspect the meter wheel assembly, measure the wear of the wheel diameter, and replace it in time if the wear exceeds 0.2mm[/SIZE][/FONT]5. Establish a ledger: record the date, error value, and adjustment parameters of each calibration to form a device history[/SIZE][/FONT]8. Conclusion[/SIZE][/FONT]The metering accuracy of ribbon slitting machine is an important indicator of product quality control. By systematically analyzing the source of error, choosing the appropriate calibration method, and adhering to daily maintenance, the problem of inaccurate meter counting can be effectively solved. In practical operation, it is recommended to combine the static perimeter calibration method with the dynamic belt calibration method, which can not only quickly correct the basic parameters, but also verify the accuracy performance under actual working conditions. For application scenarios that require high precision, it can also be considered to upgrade to a closed-loop tension control system with a high-resolution encoder to further improve the stability of meter metering.[/SIZE][/FONT]Mastering the correct calibration method can not only reduce the loss of scrap products, but also improve the satisfaction of products at the client, which is an important technical means for ribbon manufacturers to reduce costs and increase efficiency.[/SIZE][/FONT]

Excessive static electricity in hot stamping foil slitting machine? Try the combination of grounding and antistatic rollers

In the production and slitting process of hot stamping foil, static electricity problems have always been one of the common faults that plague enterprises. Excessive static electricity can lead to foil adhesion, uneven rewinding, unwinding and slipping, and even electric shock or fire hazards for operators. This paper will focus on the two core treatment schemes of grounding system optimiz...

The rapid adjustment method of uneven winding of the ribbon slitting machine

Uneven winding is one of the most common equipment failures during the slitting process of ribbons (thermal transfer ribbons). At best, it will affect the appearance of the product, and at best, it will lead to ribbon wrinkles, breakage, or even scrapping of the entire roll. In this case, it is obviously unrealistic to disassemble and assemble for most of the day every time. Here are sever...

Ribbon slitting machine: comparative analysis of servo motor drive and traditional model

Introduction[/SIZE][/FONT]In the field of thermal transfer printing consumables production, ribbon slitting machine is one of the core equipment, and its performance directly affects the slitting accuracy, production efficiency and yield rate of ribbon products. In recent years, with the advancement of industrial automation technology, servo motor drive systems are gradually replacing asynchronous motors or stepper motor systems in traditional models. This paper will systematically compare the two technical schemes from multiple dimensions, in order to provide reference for equipment selection and technology upgrade.[/SIZE][/FONT]1. Power and control system architecture[/SIZE][/FONT]Traditional models[/SIZE][/FONT]Traditional ribbon slitting machines mostly use three-phase asynchronous motors + frequency converters as the main drive, and cooperate with mechanical clutch brake components to achieve tension control. The rewinding and unwinding shafts typically employ a magnetic powder clutch/brake that changes the output torque by manually adjusting the current. The control system is commonly configured with PLC (programmable logic controller) + touch screen, but there is a lack of real-time synchronization mechanism between each axis, relying on mechanical drive shafts or gearboxes to achieve speed matching.[/SIZE][/FONT]Servo-driven models[/SIZE][/FONT]The servo drive scheme adopts independent servo motor + servo drive to form a fully closed-loop control system. Each axis (unwinding shaft, traction roller, rewinding shaft) is equipped with an independent servo motor, which is interconnected to high-speed industrial real-time Ethernet such as EtherCAT and Profinet to achieve microsecond synchronous control. The system has built-in tension sensors or uses the current loop feedback of servo motors to build closed-loop tension control without the need for mechanical friction components.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/84e255cdf990c11.jpg[/IMG][/SIZE][/FONT]2. Comparison of key performance indicators[/SIZE][/FONT][/SIZE][/FONT]Performance dimensionsTraditional modelsServo-driven modelsSlitting accuracyÂ0.2mm~Â0.5mmÂ0.05mm~Â0.1mmMaximum mechanical speed150~250m/min300~500m/minacceleration and deceleration time10~30 seconds (limited by mechanical inertia)1~3 secondsTension fluctuationsÂ10%~Â15%Â2%~Â5%Stoppage positioning accuracyRelying on brakes, the error is largeZero-speed locking, precise positioningOrder change time15~25 minutes5~10 minutes[/SIZE][/FONT]3. Differences in operating principles[/SIZE][/FONT]Tension control mechanism[/SIZE][/FONT]Conventional models adopt open-loop + mechanical damping method. The unwinding end uses a magnetic powder brake to provide a constant damping torque, and the winding end controls the tension through a magnetic powder clutch or torque motor. As the roll diameter changes, the operator needs to adjust it manually or indirectly by relying on the tension pendulum bar, and the response lag is severe.[/SIZE][/FONT]The servo model adopts closed-loop constant tension control. The unwinding servo motor runs in torque mode, calculates and outputs the reverse torque according to the real-time coil diameter; The traction roller servo runs in speed mode as the system speed reference; The rewinding shaft operates in torque mode, dynamically adjusting the output torque based on the set tension and real-time reel diameter. The three are synchronized through the high-speed bus, and the tension fluctuation is suppressed in real time during the whole process of starting, accelerating, decelerating and stopping.[/SIZE][/FONT]Calculation method of roll diameter[/SIZE][/FONT]Traditional models mostly measure the coil diameter indirectly through ultrasonic sensors or proximity switches + mechanical swing arms, and the accuracy and reliability are affected by the installation accuracy of the sensor and the material material.[/SIZE][/FONT]The servo model uses the motor encoder feedback + material thickness integration algorithm to calculate the roll diameter in real time, and supports the adaptive roll diameter calibration function, which is automatically corrected every time the roll is changed or spliced, and the calculation accuracy can reach less than 0.1mm.[/SIZE][/FONT]4. Comparison of operation and maintenance[/SIZE][/FONT]Process parameter setting[/SIZE][/FONT]The process parameters (tension value, slitting width, winding hardness) of traditional models need to be manually set on the control cabinet panel or touch screen, and the parameter correlation between different axes is poor, and the dependence on the experience of the operator is high.[/SIZE][/FONT]The servo model provides a recipe management system, and all process parameters can be called up with one click. The system has a built-in tension taper control function, which can automatically adjust the winding tension according to the change of the coil diameter, ensuring that the internal tension is uniform when the coil diameter is large, and there is no "chrysanthemum core" or "collapse coil" phenomenon.[/SIZE][/FONT]Maintenance costs[/SIZE][/FONT]The magnetic powder clutch and brake of traditional models are wearing parts, and the magnetic powder will degrade due to high temperature oxidation or wear after long-term use, usually every 6~12 months. Mechanical transmission components such as gearboxes, universal couplings, timing belts, etc. need to be lubricated and calibrated regularly.[/SIZE][/FONT]The servo drive system eliminates the magnetic particle assembly and most of the mechanical transmission structure, and there are no friction loss parts. The service life of servo motors is usually more than 5~8 years, and the main maintenance work is encoder cleaning and fan filter replacement, which significantly reduces long-term operating costs.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202512/9636f944ce4778d.jpg[/IMG][/SIZE][/FONT]5. Energy consumption comparison[/SIZE][/FONT]From the perspective of energy efficiency, the servo drive system has obvious advantages:[/SIZE][/FONT]â Traditional model: The magnetic powder clutch/brake is always in a slip state when working continuously, and a large amount of electrical energy is converted into heat loss, and the actual measurement shows that its energy utilization rate is only 40%~55%.[/SIZE][/FONT]â Servo model: The servo motor can feed back energy to the DC bus for other shafts through regenerative power generation when braking or decelerating, and the overall energy utilization rate of the system can reach 75%~85%.[/SIZE][/FONT]Taking a ribbon slitting machine with a width of 300mm and a design speed of 200m/min as an example, the annual power saving of the servo model can reach 8000~12000 kWh according to the daily two-shift operation.[/SIZE][/FONT]6. Intelligence and data capabilities[/SIZE][/FONT]Traditional control systems often do not have data acquisition and communication interfaces, and production data needs to be manually recorded, making it difficult to integrate into MES (Manufacturing Execution System) or conduct quality traceability.[/SIZE][/FONT]Servo drive solutions are naturally based on Industry 4.0. The servo drive can directly upload real-time torque, speed, temperature, current and other status data of each axis, and can be combined with edge computing equipment to realize:[/SIZE][/FONT]â Real-time monitoring of tension curves and abnormal alarms[/SIZE][/FONT]â Predictive maintenance of blade wear[/SIZE][/FONT]â Automatic production OEE (Overall Equipment Efficiency) statistics[/SIZE][/FONT]â Traceability analysis of batches of abnormal quality[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/0ad663a781d6.jpg[/IMG][/SIZE][/FONT]7. Investment return analysis[/SIZE][/FONT]The one-time purchase cost of servo-driven models is usually 30%~50% higher than traditional models, but the payback period is usually 12~18 months, considering the following factors:[/SIZE][/FONT]1. Efficiency improvement: higher operating speed and shorter order change time can increase the daily output of a single machine by 40%~60%[/SIZE][/FONT]2. Yield improvement: improved slitting accuracy and tension stability, and reduced scrap rate by 2%~5%[/SIZE][/FONT]3. Energy Savings: Significant savings in annual electricity bills[/SIZE][/FONT]4. Reduced maintenance costs: The cost of magnetic powder consumables and manual maintenance costs are reduced by more than 70%[/SIZE][/FONT]5. Labor cost optimization: One person can operate multiple servo models, and traditional models often require special personnel to be on duty[/SIZE][/FONT]8. Suggestions for applicable scenarios[/SIZE][/FONT]Scenarios where traditional models are still applicable:[/SIZE][/FONT]â Small workshops with very limited budgets[/SIZE][/FONT]â Ordinary ribbons with small slitting format and low accuracy requirements (Â more than 0.5mm).[/SIZE][/FONT]â Low-frequency usage scenarios with an annual boot time of less than 1,000 hours[/SIZE][/FONT]Servo models are more suitable for scenarios:[/SIZE][/FONT]â Production of high-end ribbons (side-pressed, resin-based, colored ribbons).[/SIZE][/FONT]â Wide width (more than 300mm) and high speed (more than 250m/min) continuous operation[/SIZE][/FONT]â Enterprises that need to connect with MES systems to realize digital factory management[/SIZE][/FONT]â Slitting of ultra-thin substrate films (less than 4 Îm) with strict requirements for tension stability[/SIZE][/FONT]Conclusion[/SIZE][/FONT]The application of servo motor drive technology in ribbon slitting machine represents the evolution direction of slitting equipment from "mechanical dominance and manual intervention" to "electronic control and intelligent collaboration". Although the initial investment is higher than that of traditional models, it has achieved comprehensive surpassing in terms of slitting accuracy, production efficiency, energy consumption level, maintenance cost and intelligence. For ribbon manufacturing enterprises pursuing product quality and production efficiency, servo drive solutions have become the mainstream choice for new production lines and existing equipment upgrades.[/SIZE][/FONT]With the continuous decline in servo system costs and the maturity of localized alternatives, it is expected that in the next five years, servo-driven ribbon slitting machines will account for more than 80% of the new production capacity, gradually becoming the standard configuration in the industry.[/SIZE][/FONT]

Research on the relationship between slitting speed and yield of ribbon slitting machine

Abstract:[/SIZE][/FONT]As a key consamus for barcode printing, the quality of the slitting process directly determines the printing effect and market value of the final product. In this paper, the influence mechanism of slitting speed on yield is discussed by the control variable method. It is found that the slitting speed and yield are not a simple linear relationship, but there is an "optimal economic interval". Too low a speed can lead to wrinkles caused by tension fluctuations, while too high a speed can lead to burrs, broken bands, and coating damage due to increased thermal effects and mechanical vibrations. This paper aims to provide theoretical basis and data support for ribbon manufacturing enterprises to optimize process parameters and improve yield rate.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202603/ec2d9514a373ffa.jpg[/IMG][/SIZE][/FONT]1. Introduction[/SIZE][/FONT]With the rapid development of logistics, medical care, e-retail and other industries, the demand for ribbons in thermal transfer printing technology is increasing year by year. Ribbons are usually composed of an extremely thin polyester film (PET, usually 4.5 Îm-6.0 Îm thickness) substrate, coated with a heat-resistant back coating, and a wax/resin-based ink layer.[/SIZE][/FONT]Slitting is the last key step in the ribbon production process, and its task is to slice the wide and large coil master coils into narrow small coils according to the specifications required by the customer. The operating speed of the slitting machine (usually in the range of 100m/min-600m/min) directly determines the production efficiency, but if you blindly pursue high speed, it often leads to a sharp decline in the yield rate (yield rate), resulting in raw material waste.[/SIZE][/FONT]Therefore, exploring the intrinsic relationship between slitting speed and yield is of great significance for balancing production efficiency and product quality.[/SIZE][/FONT]2. Experimental equipment and methods[/SIZE][/FONT]2.1 Experimental equipment[/SIZE][/FONT]â Slitting equipment: a certain type of high-speed ribbon special slitting machine (equipped with closed-loop tension control system and ultrasonic deviation correction system).[/SIZE][/FONT]â Material: 650mm width ribbon master coil, substrate thickness of 5.0Îm (highly sensitive thin substrate), ink coating adhesion class A.[/SIZE][/FONT]â Inspection tools: 10x magnifying glass, digital tensiometer, surface roughness tester.[/SIZE][/FONT]2.2 Experimental methods[/SIZE][/FONT]The slitting speed gradient is set as follows: 150 m/min, 250 m/min, 350 m/min, 450 m/min, 550 m/min.[/SIZE][/FONT]The initial unwinding tension (25N), winding roller pressure and ambient temperature and humidity (23Â2ÂC, 50% RH) were maintained in each group. Slitting 10 rolls continuously at each speed (specification: 110mm300m), and the yield is counted.[/SIZE][/FONT]Yield Definition:[/SIZE][/FONT]Among them, the unqualified products include: end face misalignment (>0.5mm), electrostatic breakdown, severe burrs, and printing broken ribbons caused by inconsistent tightness of winding.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202508/747265836d86a8d.jpg[/IMG][/SIZE][/FONT]3. Experimental results and data analysis[/SIZE][/FONT]After the experimental data are sorted out, the relationship curve between slitting speed and yield is plotted as shown in the following table:[/SIZE][/FONT][/SIZE][/FONT]Slitting speed (m/min)Average yield (%)Main types of defects15097.2%Slight unevenness of the end face due to slight tension fluctuations25098.5%The condition is stable and the defect rate is the lowest35097.8%Micro-burrs begin to appear, static electricity accumulates45094.5%The burrs increased, and ink scratches appeared on individual rolls55088.0%Frequent broken bands, chrysanthemum core-like hard strips on the end face, and the coating falls off[/SIZE][/FONT]Trend Analysis:[/SIZE][/FONT]1. Low speed zone (< 200 m/min): Although the mechanical stability is good, the low speed leads to the prolongation of the slitting time, and the response sensitivity of the tension system decreases at extremely low speed, which is prone to "crawling", resulting in the end face neatness is slightly lower than that of the medium speed area.[/SIZE][/FONT]2. Medium speed zone (200-350 m/min): This zone is the "golden zone". The mechanical resonance of the slitting machine was effectively suppressed, the tension control system was in the optimal response range, and the yield reached its peak (98.5%).[/SIZE][/FONT]3. High-speed zone (>400 m/min): With the increase of speed, the yield rate shows a significant downward trend. When the speed exceeds 500 m/min, the yield drops below 90%, making it almost impossible to maintain continuous production.[/SIZE][/FONT]4. Mechanism discussion[/SIZE][/FONT]4.1 Mechanical vibration and cutting mechanism of cutting edge[/SIZE][/FONT]The slitting of ribbons relies on the shearing of the film with a circular knife (or razor). When the slitting speed is increased:[/SIZE][/FONT]â Reduced edge contact time: The interaction time between the tool and the film is shortened, requiring greater instantaneous shear forces. If the axis is poorly balanced, micro-vibrations generated at high speeds can cause high-frequency collisions between the blade and the edge of the substrate, forming "jagged edges" or "white powder" (coating particles shedding).[/SIZE][/FONT]â Tool temperature rise: For low melting point wax-based ribbons, local high temperature will melt the ink and stick to the cutting edge, forming "accumulated edges", which will scratch the subsequent film surface and cause coating damage.[/SIZE][/FONT]4.2 Tension coupling and deformation[/SIZE][/FONT]The ribbon substrate is extremely thin and has a pronounced viscoelasticity.[/SIZE][/FONT]â At low speeds: tension control is relatively simple, but too long to start the acceleration section may affect the stiffness gradient of the winding.[/SIZE][/FONT]â At high speeds: the inertia difference between winding and unwinding increases sharply. Once the tension sensor response lags, the instantaneous tension spike stretches the substrate, resulting in the substrate "necking". When the tension exceeds the yield strength of the substrate, it can even cause banding breakage (which is the main reason for the sharp drop in yield at high speeds). In addition, during high-speed winding, air is caught between the film layers, resulting in "star-shaped" folds at the core, which seriously affects the smoothness of paper flow during printing.[/SIZE][/FONT]4.3 Electrostatic accumulation effect[/SIZE][/FONT]PET substrate is an insulator. The faster the slitting speed, the faster the peeling and friction speed between the film and the guide roller and the tool, and the electrostatic charge density generated increases exponentially.[/SIZE][/FONT]â Consequences: Static electricity will not only absorb dust and cause white spot defects, but also cause mutual rejection or tight adsorption between film layers during winding, resulting in "deviation" or "adhesion". In severe cases, electrostatic breakdown will form tiny holes, which will directly lead to the scrapping of this segment of the ribbon.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202601/0ad663a781d6.jpg[/IMG][/SIZE][/FONT]5. Optimize your strategy[/SIZE][/FONT]Based on the above research, in order to improve the yield under high-speed slitting, the following measures are recommended:[/SIZE][/FONT]1. Set the Optimal Speed Threshold:[/SIZE][/FONT]For ribbons with thin substrates below 5.0 Îm, it is recommended to control the slitting speed between 250-350 m/min. For resin-based ribbons with a larger thickness (> 6.0 Îm), an appropriate increase to 400 m/min can be appropriately increased.[/SIZE][/FONT]2. Tension Taper Optimization:[/SIZE][/FONT]The "variable taper tension control" strategy is adopted. As the roll diameter increases, the winding tension is automatically reduced to avoid the deformation of the core layer caused by excessive pressure on the inner and outer layers. When operating at high speeds, the "acceleration feedforward" function should be enabled to reduce tension fluctuations during acceleration and deceleration.[/SIZE][/FONT]3. Tool System Upgrades:[/SIZE][/FONT]Use high-precision carbide circular knives and are equipped with "whetstone automatic grinding" or "oil spray lubrication" device. By spraying a small amount of anti-stick agent (or alcohol), the coefficient of friction is reduced, the cutting heat is removed, effectively extending tool life and reducing burrs.[/SIZE][/FONT]4. Static Elimination System:[/SIZE][/FONT]High-frequency AC ion air rods are installed at the inlet and outlet of the slitting machine and before winding to control the electrostatic voltage within Â1kV. Experiments show that the yield can be increased from 94.5% to 96.8% at a speed of 450m/min after installing a high-efficiency electrostatic eliminator.[/SIZE][/FONT]6. Conclusion[/SIZE][/FONT]In this paper, the following conclusions are drawn by comparing the yield of ribbon slitting machine at different slitting speeds:[/SIZE][/FONT]1. Slitting speed is a key sensitive parameter that affects the yield of ribbons. Too low speed (< 200 m/min) is easy to cause defective end faces due to the nonlinearity of the tension system; Excessive velocity (>450 m/min) can cause severe burrs, bandbreaks, and coating damage due to mechanical vibration, thermal effects, and electrostatic build-up.[/SIZE][/FONT]2. There is an "optimal economic speed range" for ribbon slitting. For conventional ribbons, the recommended operating speed is 250-350 m/min, and the yield can be stably maintained above 98% in this range.[/SIZE][/FONT]3. The key to improving high-speed slitting yield lies in multi-technology synergy: advanced closed-loop tension control, high-precision dynamic balance cutter shaft system, and efficient static elimination device.[/SIZE][/FONT]In the context of increasingly fierce competition in the ribbon industry and rising raw material costs, in-depth study of the coupling relationship between slitting speed and yield, and finding the best balance between "efficiency" and "quality" through refined process control is the core way for production enterprises to reduce costs and increase efficiency.[/SIZE][/FONT]

PET film slitting machine safety operation procedures and protection points

1. Preamble[/SIZE][/FONT]PET film (polyester film) is widely used in packaging, electronics, optics, new energy and other fields due to its excellent mechanical properties, heat resistance, and insulation. As a key equipment for film processing, slitting machines have high operating speed, sharp knives, and high tension, which poses risks such as mechanical injury, electrical safety, and fire hazards. In order to ensure the personal safety of operators, ensure the stable operation of equipment and product quality, it is crucial to formulate and strictly implement safety operating procedures and protection points.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/202508/f435a2f0d07dfaf.jpg[/IMG][/SIZE][/FONT]2. Preparation before taking office[/SIZE][/FONT]1. Personnel qualifications[/SIZE][/FONT]â Operators must undergo professional training, be familiar with equipment structure, performance, operating procedures and emergency treatment methods, and can only take up their posts after passing the assessment.[/SIZE][/FONT]â It is strictly forbidden to work after drinking, fatigue or taking drugs that affect mental state.[/SIZE][/FONT]2. Personal Protective Equipment (PPE)[/SIZE][/FONT]â Work clothes: wear tight, anti-static work clothes with tight cuffs, and it is strictly forbidden to wear ties, scarves and other easy-to-wrap items.[/SIZE][/FONT]â Protective gloves: wear cut-resistant gloves when touching blades or carrying films; When loading and unloading, you can wear non-slip gloves as needed.[/SIZE][/FONT]â Safety shoes: wear anti-smashing and non-slip safety shoes to prevent heavy objects from falling and injuring.[/SIZE][/FONT]â Safety Goggles: When cleaning the blade and observing high-speed operating areas, it is recommended to wear safety goggles to prevent debris from flying.[/SIZE][/FONT]â Earplugs: Earplugs must be worn in environments where the device is noisy and exceeds 85 decibels.[/SIZE][/FONT]3. Equipment inspection[/SIZE][/FONT]â Before starting the machine, check whether the safety devices such as emergency stop buttons, safety light curtains, and protective covers are intact and effective.[/SIZE][/FONT]â Confirm that the slitting blades (round knives, flat knives) are firmly installed without cracks and defects.[/SIZE][/FONT]â Check whether there are leaks in the air circuit and hydraulic system, and whether the air pressure gauge indicates normal.[/SIZE][/FONT]â Clean the surface and surrounding debris of the equipment to ensure that the operating area is tidy, free of oil stains and obstacles.[/SIZE][/FONT]3. Safety specifications during operation[/SIZE][/FONT]1. Power-up and trial operation[/SIZE][/FONT]â Before turning off the power supply, loudly warn the surrounding personnel to "prepare to turn on".[/SIZE][/FONT]â After starting the equipment, idle at low speed for 1-2 minutes to observe whether there is any abnormal sound or vibration of the equipment, and confirm that the transmission parts are running normally.[/SIZE][/FONT]â Check whether the guiding system and tension control system are working properly.[/SIZE][/FONT]2. Feeding and film threading[/SIZE][/FONT]â Use a special spreader or hydraulic lifting vehicle when feeding to ensure that the female reel and the chuck are accurately aligned to prevent the coil from slipping and injuring.[/SIZE][/FONT]â During the film threading process, the equipment must be in a stopped or jogging state. It is strictly forbidden to guide the film through the tool group or pressure roller by hand during the operation of the equipment.[/SIZE][/FONT]â Hands should not be close to dangerous areas such as blades, meshing rollers, and flattening rollers. Use film introduction tools (such as film introduction tapes, film introduction sticks) to assist film penetration.[/SIZE][/FONT]3. Parameter setting and operation[/SIZE][/FONT]â According to the thickness, width and slitting process requirements of the film, the speed, tension, winding pressure and other parameters are correctly set on the control panel, and overspeed and overload operation are strictly prohibited.[/SIZE][/FONT]â When starting the equipment, gradually accelerate from low speed to set speed to avoid sudden high-speed start-up that can cause film breakage or splashing.[/SIZE][/FONT]â When the equipment is running, it is strictly forbidden to open the protective cover, remove the safety light curtain or reach over the protective fence to touch the film, blade and roller.[/SIZE][/FONT]â The operator should stick to his post, observe the operating status of the film, the neatness of the winding and the sound of the equipment at all times, and press the emergency stop button immediately if he finds any abnormalities.[/SIZE][/FONT]4. Tool change and adjustment[/SIZE][/FONT]â When replacing or adjusting the slitting blade, the power supply and air supply of the equipment must be cut off, and the emergency stop switch must be pressed, and the warning sign of "Someone is working, no closing" must be hung.[/SIZE][/FONT]â Use special tools to change knives, the blade is sharp, and should be handled gently when picking and placing to avoid injury or damage to the blade.[/SIZE][/FONT]â When adjusting the gap between the tool shaft and the pressing roller, it should be done in a completely stationary state.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/ueditor/image/202508/17551621810e78ad.jpg[/IMG][/SIZE][/FONT]4. Blanking and finishing work[/SIZE][/FONT]â After the slitting is completed, the equipment can be completely stopped before the discharge operation can be carried out.[/SIZE][/FONT]â Use the discharge trolley or cart to pick up the finished coil core, and handle it gently to prevent rolling and falling.[/SIZE][/FONT]â Clean up the waste edge material in time, and the entanglement of the waste edge material may cause equipment jamming or personnel tripping. It is strictly forbidden to pull the waste edge during the operation of the equipment.[/SIZE][/FONT]â Use a special air gun to clean the dust and debris on the surface of the equipment, and be careful to avoid electrical components.[/SIZE][/FONT]5. Protection points and risk control[/SIZE][/FONT]1. Mechanical injury protection[/SIZE][/FONT]â Rotating part protection: All exposed rotating shafts, gears, and couplings must be fitted with a strong protective cover.[/SIZE][/FONT]â Blade protection: Blades that are not in working condition should be covered with protective covers; After the equipment is shut down, the tool set should be in a safe position (e.g., disengaged).[/SIZE][/FONT]â Safety interlock device: ensure that the safety light curtain, safety door switch, cable switch and other interlocking devices are sensitive and reliable, and it is strictly forbidden to artificially shield or short connect.[/SIZE][/FONT]2. Electrical safety[/SIZE][/FONT]â Keep the door of the electronic control cabinet closed and locked, and not open it by non-professionals.[/SIZE][/FONT]â The operating environment should be kept dry, and there should be no standing water or conductive dust on the ground.[/SIZE][/FONT]â If the cable is damaged, leakage, or the motor is abnormally heated, stop the machine immediately and report for repair.[/SIZE][/FONT]3. Fire safety[/SIZE][/FONT]â Although PET film is not flammable, it can still be burned under high temperature, frictional static or open flame conditions. Smoking and open flame operations are strictly prohibited around the equipment.[/SIZE][/FONT]â Regularly clean the inside of the equipment from dust and film debris to prevent static electricity buildup.[/SIZE][/FONT]â Sufficient dry powder fire extinguishers or carbon dioxide fire extinguishers must be equipped on site and ensure that operators will use them correctly.[/SIZE][/FONT]â If the film winding friction overheats and smokes, the machine should be stopped immediately, the power supply should be cut off, and a fire extinguisher should be used to deal with it, and it is strictly forbidden to extinguish the electrical fire with water.[/SIZE][/FONT]4. Electrostatic protection[/SIZE][/FONT]â PET film is prone to static electricity during the production slitting process, which may lead to electric shock, dust adsorption and even fire.[/SIZE][/FONT]â Ensure that the equipment is well grounded and regularly check that the static eliminator (such as the electrostatic rod) is working properly.[/SIZE][/FONT]â In the dry season of autumn and winter, the operator can release body static electricity by touching the grounding metal plate.[/SIZE][/FONT][IMG]https://www.friendbookmark.com/https://www.slittingtech.com/uploadfile/ueditor/image/202508/17551621812420e4.jpg[/IMG][/SIZE][/FONT]6. Emergency treatment of abnormal situations[/SIZE][/FONT][/SIZE][/FONT]Abnormal situationEmergency measuresFilm breakagePress the emergency stop button immediately, and after the equipment is completely stopped, re-thread the film. It is strictly forbidden to grab the wrapped film with bare hands during operation.The blade cracksImmediately shut down, cut off power, seal off the area, and have professionals use tools such as magnetic rods to remove debris and replace new blades.Equipment noise/odorQuickly press the emergency stop button, cut off the power supply, report to the maintenance personnel, and do not restart until the cause is identified.People were injuredFirst, cut off the power source of the equipment to prevent secondary injury; Immediately provide first aid to the injured (such as stopping bleeding, bandaging) and call the emergency number; Protect the site and facilitate accident analysis.[/SIZE][/FONT]7. Maintain safety[/SIZE][/FONT]â When repairing, maintaining and cleaning equipment, the system of "power off, gas cut, listing, and locking" must be implemented.[/SIZE][/FONT]â Maintenance personnel need to be certified to work, and if equipment needs to be tested during the maintenance process, they must ensure that all personnel are evacuated from the dangerous area and operated by the maintenance personnel themselves.[/SIZE][/FONT]â Regularly check the wear of the tool, the lubrication status of the bearing, the tightness of the belt and the effectiveness of the safety device, and make records.[/SIZE][/FONT]8. Summary[/SIZE][/FONT]The efficient operation of PET film slitting machine is inseparable from the guarantee of safety. Every operator should firmly establish the idea of "safety first, prevention first", strictly abide by the operating procedures, use protective facilities correctly, and be proficient in emergency response skills. Managers should strengthen daily supervision and training, regularly investigate hidden dangers, and ensure the intrinsic safety of equipment. Only by implementing safety responsibilities to every detail can we truly achieve the goal of safe production, high quality and high yield.[/SIZE][/FONT]Note: This article is a general guidance document, and each enterprise should formulate more detailed and targeted safety operation procedures according to the specific equipment model, production process and site environment, and post it in a conspicuous position of the equipment.[/SIZE][/FONT]