Gripper control system using a servo driven CAM and a method for use thereof
AssigneeHewlett-Packard Development Company, L.P.
InventorsElad Taig, Haggai Abbo, Gilad Tzori
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Abstract
A gripper system for controlling the loading and unloading of sheets on a cylindrical sheet guide. The gripper system comprises one or more grippers, which are positioned at an outer edge of the cylindrical sheet guide. Each gripper is coupled to a cam follower. The gripper system further comprises a cam, which is configured for affecting the elevation of the gripper(s) by moving the cam follower(s), and a servomotor, which is adapted for steering the cam. A cam-gripper controller is provided for controlling the servomotor according to a current printing profile.
Claims13
A gripper system for controlling loading and unloading of sheets on a cylindrical sheet guide, said gripper system comprising:
- at least one gripper positioned at an outer edge of said cylindrical sheet guide, said at least one gripper coupled to at least one cam follower and configured for holding the sheets on said cylindrical sheet guide;
- a cam configured for affecting elevation of said at least one gripper relative to said cylindrical sheet guide by moving said at least one cam follower;
- a servomechanism adapted for actuating said cam;
- a sheet thickness identifier configured to detect a thickness of the sheets;
- and
- a cam-gripper controller adapted for controlling said servomechanism according to a current printing profile and adjusting a height between said at least one gripper and said cylindrical sheet guide during a printing process, wherein said current printing profile corresponds to the thickness of the sheets.
Dependencies are inferred from the claim text.