Separation of sheets of paper from continuously conveyed run

摘要

A sword cylinder has a sword running along a cover line and inserting the forward running end of a paper sheet in an opened gripper of a gripper cylinder. Between the roller pair and the sword cylinder is a device for producing cross perforation lines on the paper run. A rotating tear-off segment works in conjunction with the sword cylinder. The sword cylinder (54) is provided with two cover sections (57,58) with larger and smaller radii. The tear-off segment (55) works in conjunction with the cover section (57) with the larger radius, rotates at the same peripheral speed as it and the diameter of the cover circle described by the tear-off segment (55) is equal to the radius of the cover section with the larger diameter.