Installation and debugging of rubber rollers

Any printing press faces the problem of how to install and debug the rubber roller. If you can't use it reasonably and follow its operation rules, it will not only fail to print ideal and excellent products, but also damage the rubber roller and shorten the service life of the printing plate. So it is very important to debug the printing rubber roller.

1. Loading and unloading

When the rubber roller is installed, the shaft head and the bearing should be matched with a certain degree of accuracy and cleanliness. It should be handled with care, and should not collide with the shaft head and the rubber layer, so as to avoid damage to the roller body, bending and damage to the rubber layer.

2. Debug

The pressure between the rubber roller and the rubber roller and the printing plate should be adjusted appropriately according to the elasticity and hardness of the rubber and its function in the printing process. Generally, a feeler gauge of 0.15 ~ 0.20mm is used (the feeler gauge should be lubricated, non-woven cloth roller to avoid damage to the rubber surface) for testing, and the radial contact pressure of the rubber roller must be uniform. Otherwise, long-term operation will cause pockmarking, glue loss, cracking, and glue opening of the rubber roller at one end of the pressure.

3. Lubrication

The shaft head and bearing of the rubber roller should always be kept effectively lubricated. If the lubrication is poor, it will cause the wear of the rubber roller shaft head and the bearing, and the gap will increase, which will cause uneven ink application in printing. At the same time, the non-woven roller will also cause printing bar marks due to the jumping and sliding of the rubber roller. If there is no effective lubrication in continuous operation for a long time, it will also cause heat generation in the bearing and the shaft core, which will cause the rubber surfaces at both ends of the rubber roller to be thermally expanded and worn, resulting in pockmarks, glue loss and cracks on the rubber surfaces at both ends.