Mechanism for accurate-register sheet transfer and the transport

Details Mechanism for accurate-register sheet transfer and the transport Mechanism for accurate-register sheet transfer and the transport

1992-09-23

1993-12-07

Eickholt, Eugene H.

Printing

Planographic

Rotary machines

101217, 101409, 271204, 271206, B41F 900

Patent

active

052675106

ABSTRACT:
A chain operated sheet transport and transfer mechanism for sheet-fed printing machines having a plurality of printing units. The chain operated mechanism includes a plurality of gripper cars affixed to chains for movement between the printing units. The gripper cars each have a gripper impact strip and a pivotable gripper finger, with the gripper strip of each car extending the width of the gripper car and being of concave configuration. A bending device at the transfer zone of each printing unit is operable for acting on the gripper car to bend the concave gripper impact strips straight in order that sheets are transferred from one printing unit to the other without register deviation.

REFERENCES:
patent: 2771838 (1956-11-01), Federwitz
patent: 3935814 (1976-02-01), Wetsgerber
patent: 4765239 (1988-08-01), Ciccone et al.
patent: 4967656 (1990-11-01), Douglas et al.
patent: 4977828 (1990-12-01), Douglas
patent: 5088404 (1992-02-01), MacConnell et al.

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