Offset paper from chain press printing

Editor's note: Because the requirements for paper used in various types of documents, forms, books and magazines of offset printing machines are different, and the size, thickness, and thickness are all different, the machine needs to be adjusted accordingly for different papers. The following example is analyzed:

In the recent printing paper work process, it was found that there was such a phenomenon: once the fixed-speed printing began, there was an empty phenomenon every few sheets. These dropped papers are stained with oil in the machine and cannot be used anymore, and affect the normal paper passing behind. At the beginning, I think that Feida's paper-feeding instability or the failure of the two-sheet controller has caused it. However, it was observed that Feida's partial paper feeding and paper-gripping jaws were very stable and normal.

Go back and continue to check the chain tooth decay. The number of rows of all chain teeth were numbered separately, and white ink was used to mark numbers on the “glasses boxes” on both sides of the chain teeth in sequence. The normal printing was started. After careful observation, it was found to be very regular, always in the third row. Empty sheet. Stop and then check the third row of chain fangs to check and found that the row of teeth and tooth pads contact is very small and the force is small, and some tooth pads are more serious wear. As a result, the crepe paper will be stable, and the paper-off phenomenon will naturally occur during the high-speed operation of the machine.

Shut down carefully carefully and one by one, the adjustment adjustment force, the replacement of the dental pad replacement pads. After such an adjustment, the fault was completely eliminated.