Analysis of the reasons and countermeasures for the wrinkling phenomenon of the FCCL coating machine during operation?

1. The overall installation accuracy of the FCCL coating machine is low, and the installation center of each component deviates from the overall design centerline or has an angle with the design center. The foil strip will be severely wrinkled, and the installation center must be adjusted.
FCCL coating machine
2. If the parallelism between the rollers exceeds the tolerance, it will cause the foil strip to wrinkle. It is necessary to carefully check whether the vertical projection plane is not parallel or the horizontal plane is not parallel, and then adjust it.
3. The roughness of the roller surface exceeds the tolerance, and the roller surface is not smooth enough. When there are obvious processing textures, it can also cause the foil strip to wrinkle, and the manufacturer needs to replace it.
4. If there are foreign objects sticking to the back roller and each passing roller, or if too much water or isopropanol is used for wiping, it is necessary to regularly inspect, promptly detect and clean them, and be careful not to damage the roller surface.
5. The foil strip joint is poor, and when the tension on both sides of the foil strip is unbalanced, the pole piece is wrinkled. First, adjust the tension adjustment roller below the coating head. After the foil strip gradually stabilizes, adjust the adjustment roller to its original state.
6. When the gap between the back roller and the coating roller is inconsistent near contact, the pole plate will wrinkle. The coating line believes that regardless of whether the first or second side is applied, the gap should be carefully adjusted. Firstly, the gap should be appropriately expanded, and then slowly reduced. At the same time, observe the dial indicator scale at the moment when the coating roller just contacts the foil strip, and then reduce the gap by 0.03mm.
7. When the deviation correction system is abnormal, pole wrinkling may also occur. Check whether the front and rear three deviation correction systems are in automatic mode. According to the online understanding of coating, if the length on both sides of the foil strip is inconsistent, even if the sickle is bent too large, there will be pole wrinkling, which exceeds the ability to correct deviation. Therefore, the foil material has to be replaced.
8. When the tension of the pole piece is too high, the pole piece wrinkles. The tension setting should be checked for rationality. Check again whether the rotation of each transmission roller and the winding roller is flexible, and promptly handle the inflexible rollers.
9. When the opening stroke of the back roller is inconsistent, the pole piece wrinkles. Machine repair personnel are required to inspect, confirm, and adjust. After the back roller and coating roller are opened, the gap on both sides is 1mm (see the dial gauge), and the trial coating begins. When the tail is qualified, lock the nut.
During the reuse process of the rubber roller surface of the back roller, periodic elastic deformation will occur. When there is a certain degree of residual deformation, wrinkling will also occur, and a new product must be replaced.
11. According to the online understanding of coating, the loose fastening screws of a certain roller cause the parallel state of each roller to be damaged, and wrinkling will occur at this time. As long as it is discovered in a timely manner, adjusted and tightened properly.