Printing plate attachment system

Details Printing plate attachment system Printing plate attachment system

1982-04-19

1983-12-20

Sewell, Paul T.

Printing

Flexible-sheet-securing devices

B41F 2712

Patent

active

044210248

ABSTRACT:
To attach a printng plate (2) to a plate cylinder (1) having a groove therein, the groove has converging inner walls (10, 11) and a two-part attachment clamping wedge (5, 6) is provided, the clamping wedge being spring loaded to clamp an end portion (A) of the plate (2) between one part (6) of the wedge and an adjacent side wall (10), the other end portion (E) of the plate (2) being clamped between the two parts (5, 6). The parts have, in cross section, approximate trapezoidal shape. The two-part clamping element permits release of the plate by pressure (P) from the outer face of the cylinder (1) counter the force of a spring (8) which presses the clamping wedge parts (5, 6) towards the outside via a support plate (4). Preferably, the arrangement is symmetrical about a centerline (M) so that slight canting or tilting of the clamping wedges is possible for easy release of the plate (2) after installation. Upon rotation, centrifugal force acting on the clamping parts tightly clamps the printing plate (2) in position.

REFERENCES:
patent: 1900986 (1933-03-01), Gietz
patent: 1976565 (1934-10-01), Kauffmann
patent: 2229059 (1941-01-01), Ditty et al.
patent: 2948487 (1960-08-01), Locklin
patent: 3410211 (1968-11-01), Gruing
patent: 4277164 (1981-07-01), Fortmann

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