Breaking method for opening and closing tooth swing bar of offset printing cylinder impression printing machine

During the printing process of the offset printing press, if the open-closed tooth lobe of the impression cylinder suddenly breaks, it shall be promptly shut down for inspection and carefully analyzed. At this time, there are many solutions. With years of work experience, the author believes that the following methods are the most simple to handle. It is quick and can make the coffee beans run again in a short period of time.

First, turn the impression cylinder to the proper position, remove the two taper pins and the broken pendulum rod (do not move the rod shaft and other components) on the original fracture pendulum, if the replacement of the two pendulum rods on the hole can be aligned The original pin hole or the position of the original taper pin hole is almost the same, can be changed in the original pin hole 6mm tapered pin, installed and then adjust the embossing roller rod shaft brake screw, so that the swing rod roll away from the cylinder shoulder Iron 12.5mm, adjust the gripper to operate. If the replaced pendulum pin hole is far from the original pin hole, it cannot be handled by the above method. In this case, the following steps can be taken:

1. Two 5mm taper pins of appropriate length are selected to fill the two taper pin holes on the shaft of the original impression roller, and the fine teeth can be used to repair the external shaft of the shaft to achieve smooth burr-free.

2. Put the new pendulum rod into the position of the shank shaft and use electric drill to drill two 5mm positioning pin holes.

3. Remove the pendulum, put back the pendulum pressure spring and then place two good taper pins and tap.

4. Check if the paper on the platen roller is changing. After the treatment, the cause of the fracture should be carefully analyzed and dealt with promptly to avoid recurrence of the accident.