Plate clamping unit for offset press

Details Plate clamping unit for offset press Plate clamping unit for offset press

1993-03-23

1994-09-20

Eickholt, Eugene H.

Printing

Flexible-sheet-securing devices

271206, B41F 128

Patent

active

053479289

ABSTRACT:
A groove extends in the axial direction of a plate cylinder to which a printing plate is mounted. First and second plate clamps are opposite to each other in the groove to clamp the ends of the plate. The second clamp has a pair of clamping modules. The first and the second clamps are movable in the peripheral direction of the plate cylinder for opening motion. The holding portion of the clamp are moved in the radial direction of the plate cylinder for opening and closing motions. The first clamp is rotatably supported by the plate cylinder. The second clamp is shifted from a waiting position near the first clamp to a working position. A pair of the clamping modules is connected with each other via a connecting rod. The clamping modules are moved towards or away from each other to make the bottom end of the printing plate wider or narrower and remove the fanout of printing sheets. An adjusting bolt is screwed in the outer end portion of the module to move the second clamp in the direction of the axis of the plate cylinder.

REFERENCES:
patent: 3230883 (1966-01-01), Achinger et al.
patent: 3903796 (1975-09-01), Jeschke et al.
patent: 3908546 (1975-09-01), Porter
patent: 4712476 (1987-12-01), Jeschke
patent: 4785736 (1988-11-01), Jeschke
patent: 4813356 (1989-03-01), Abendroth et al.
patent: 4977833 (1990-12-01), Inage et al.
patent: 5052299 (1991-10-01), Kojima
patent: 5076167 (1991-12-01), Herold et al.
patent: 5080014 (1992-01-01), Hofheinz
patent: 5094165 (1992-03-01), Sugiyama et al.

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