J2205 offset press failure

1. When overprinting with three color plates and flat screen printing plates, ink color suddenly appeared

After analysis, this kind of failure is caused by the vibration of a certain part and caused by the jumping of the impression cylinder. After observing, the reason is that due to the wear-resisting chain being worn out, the receiving tooth row seat and the impression roller collided with the mountain pin. The fault disappeared after polishing the pins.

2. The middle print is not allowed to print

The analysis is due to the inconsistent opening and closing teeth of the large teeth of the drum, closing the teeth as early as possible, and closing the teeth for less nights, so as long as the drum teeth open teeth closed adjustment of the same on the line.

3. Teeth tighten when adjusting, but loose when printing

When regulating tooth decay, it is easy to produce such a phenomenon. When adjusting with a paper strip, it is very tight, and when it is printed, it is loosened. This is because the tooth pads of the gripper teeth wear at the time of printing. Caused by the body. Replace the dental pad on it.