Device for fastening a flexbile printing plate on a plate cylind

Details Device for fastening a flexbile printing plate on a plate cylind Device for fastening a flexbile printing plate on a plate cylind

1995-02-03

1996-03-05

Yan, Ren

Printing

Flexible-sheet-securing devices

1013821, B41F 2706

Patent

active

054958040

ABSTRACT:
Device for fastening a flexible printing plate on a plate cylinder of a rotary printing press includes a tensioning bar disposed axially parallel with the plate cylinder in a cylinder gap formed in the plate cylinder, a clamping bar swivellably fastened to the tensioning bar, a cam shaft supported in respective end walls of the plate cylinder, a first and a second cam pair carried by the cam shaft, first and second spring assemblies, respectively, cooperating with the first and the second cam pairs, the cam shaft being rotatable in one direction for actuating the first cam pair to shift the tensioning bar via cam rollers and against a force of the first spring assemblies into a printing-plate take-up position, and for actuating the second cam pair to open the clamping bar via pins attached thereto against a force of the second spring assemblies so that a trailing end of the printing plate is insertable into the open clamping bar, the cam shaft being rotatable in a direction opposite to the one direction for initially actuating the second spring assemblies to close the clamping bar and for then actuating the first spring assemblies to shift the tensioning bar into a printing-plate tensioning position.

REFERENCES:
patent: 2822754 (1958-02-01), Huck
patent: 3793948 (1974-02-01), Hugonnnier
patent: 4938134 (1990-07-01), Do/ rsam et al.
patent: 5142305 (1992-08-01), Maslanka et al.
patent: 5181469 (1993-01-01), Merkel et al.
patent: 5184554 (1993-02-01), Merkel et al.
patent: 5295435 (1994-03-01), Fuchi
patent: 5325778 (1994-07-01), Hartung et al.
patent: 5367954 (1994-11-01), Becker

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