Gripper cylinder

Details Gripper cylinder Gripper cylinder

B - Operations, Transporting

65

H

B65H 29/06 (2006.01) B41F 21/04 (2006.01) B41F 21/10 (2006.01) B65H 5/12 (2006.01)

Patent

CA 2158592

A gripper cylinder configurable as a printing cylinder of a sheet-fed printing machine, a feeder drum in a sheet-fed printing machine, or a gripper cylinder in a folder unit. The gripper cylinder includes a stationary stator and a gripper spindle assembly mounted to the cylinder. The gripper spindle assembly includes a gripper pivotably mounted to a gripper support. Instead of using a mechanical cam, the gripper can be controllably pivoted together with a cam roller by an armature that can be magnetized but is not permanently magnetic when an electric current flows through the stator thereby magnetizing a housing of the stator. The armature may be magnetically urged against the restoring force of a spring.

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