Gripper arrangement in rotation printing machine has magnitude of gripper control cam application force varied with position of cam roller on control curve during machine operation

摘要

The arrangement has a control cam roller (12) movable along a cam curve to cause gripper (1) opening and closing movement and held against the cam curve (16) by a controlled spring force. The application force is generated by a torsion rod arranged along a gripper shaft between the shaft and a control arrangement so that the magnitude of the force can be varied with the position of the roller on the control curve during machine operation. AN Independent claim is also included for the following: a rotation sheet printing machine.