Printing – Flexible-sheet-securing devices
Patent
1993-12-28
1994-11-29
Eickholt, Eugene H.
Printing
Flexible-sheet-securing devices
101378, B41F 128
Patent
active
053679547
ABSTRACT:
Device for receiving printing forms at one end thereof in a printing-unit cylinder of a rotary printing machine, wherein the printing-unit cylinder is a printing-form cylinder formed with a cylinder gap and having a shaft extending through the cylinder gap, includes a plurality of receptacle components respectively formed with pairs of mutually opposing clamping surfaces disposed on the shaft for gripping a printing form, at least one adjusting element for swiveling one of the surfaces of the respective pairs thereof formed on the receptacle components against a force of a tension spring acting in a tensioning direction, and the other of the surfaces of the respective pairs thereof formed on the receptacle components having a retaining element actuatable by the one adjusting element for swiveling the other of the surfaces against a force of another tension spring, the shaft being an expansion shaft, the receptacle components being individual gripper elements supported side by side on the expansion shaft in a manner fixed against relative rotation therewith, and including adjustment devices for expanding the expansion shaft linearly in axial direction, and preloading devices actuatable independently of one another upon individual ones of the gripper elements for twisting the expansion shaft in the circumferential direction.
REFERENCES:
patent: 3913480 (1975-10-01), Dauner et al.
patent: 4130058 (1978-12-01), Bocu
patent: 4730557 (1988-03-01), Wieland
patent: 5076167 (1991-12-01), Herold et al.
patent: 5094165 (1992-03-01), Sugiyama et al.
patent: 5181469 (1993-01-01), Merkel et al.
patent: 5182994 (1993-02-01), Siguyama et al.
Eickholt Eugene H.
Greenberg Laurence A.
Heidelberger Druckmaschinin AG
Lerner Herbert L.
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