Attention Should Be Paid To The Rubber Bending Roller Of The Printing Machine During Using

The rubber rollers (including water rollers and ink rollers) of printing presses play an important role in the printing process, but in actual production, many printing companies will soon need to replace the original rubber rollers. Due to insufficient cleaning and maintenance of the rubber rollers by most manufacturers, the original rubber rollers are prematurely aged, causing printing failures and cost loss.

During the use of the rubber bending roller of the printing machine, due to improper use or operation, the life of the rubber roller will be shortened or damaged. What are the reasons?

1. Improper pressure adjustment of the ink roller will cause wear of the ink roller, especially if the pressure is heavy on one side and light on the other, it will easily cause damage to the rubber roller.

2. Forgetting to close the handles on both ends of the water bucket roller will cause the gel of the metering roller to tear and damage. If one end is not closed or the other end is not closed properly, it will cause the metering roller and plate-type water roller to wear.

3. During the plate loading process, the PS plate is not installed properly, the bite of the PS plate and the tension screws at the end of the plate are not tightened. The PS plate will wear out the rubber roller due to the untensioned part and the protruding protrusions; The plate is too tight or the top plate is too strong, which causes the plate to deform or rupture and damage the ink roller, especially because the plate water roller has low rubber hardness, and the damage is most obvious.

4. During the printing process, when printing a long order, the running conditions of the two ends and the middle will be different, which will cause the two ends of the ink roller to wear.

5. Poorly printed film. The powder and sand particles falling off the film will cause the ink roller and copper roller to wear.

6. Use a sharp tool to draw a gauge line or make other marks on the printing plate, causing the ink roller to be damaged.

7. During the printing process, because the local water quality is poor and the hardness is high, and the printing plant has not installed a proper water treatment device, the surface of the ink roller has accumulated calcium compounds, which increases the hardness of the rubber and increases the friction. This problem not only causes wear of the ink roller, but also causes serious print quality problems.

8. The ink roller is not regularly maintained and recycled.

9. If the car is not washed for a long time, the ink on the metering roller surface area will also cause abrasion.

10. Special processes, such as printing gold and silver cardboard, stickers or films, require special inks and special additives, which will accelerate the cracking and aging of the rubber roller.

11. The roughness of ink particles, especially the roughness of UV inks, has a direct impact on the wear of rubber rollers.

12. The speed of wear of rubber rollers in different parts varies. Such as the ink transfer roller, because its action is stationary → high speed → stationary continuously reciprocating, its wear degree is faster than ordinary.

13. Depending on the plate roller and ink roller, due to the axial movement with the string (water) ink roller, the wear of the two ends of the rubber roller is greater than that in the middle.

14. When the machine is stopped for a long period of time (such as the Spring Festival holiday, etc.), the rubber roller is squeezed for a long period of time, which causes uneven diameter of the rubber roller, and the rotation and deformation of the rubber roller are different, which exacerbates the wear of the rubber roller.

15. The temperature control of the working environment is not good (too cold or too hot), which is beyond the physical properties of the rubber roller, which will aggravate the wear of the rubber roller.