Printing system with flying-plate change

Details Printing system with flying-plate change Printing system with flying-plate change

1991-12-27

1992-11-10

Eickholt, Eugene H.

Printing

Rolling contact machines

Rotary

101247, 101352, B41F 504

Patent

active

051614634

ABSTRACT:
To positively lock in position a pair of eccentrically journalled blanket cylinders (3, 6), movable between three positions, namely in engagement with a first pair of plate cylinders (1, 4), or a second pair of plate cylinders (2, 5), or in engagement with neither plate cylinder, the blanket cylinders having a printing substrate passed therebetween for perfecting printing, the eccentric bearings (7, 8) for the blanket cylinders are secured to operating disks (9, 10) which, each, are coupled to a scissor-link arrangement formed by two pairs of links (16, 18; 17, 19), joined at a common pivot point. Pneumatic cylinder-piston arrangements move the pivot points (1618, 1719) to compress one of the scissor link pairs to V position, while the other link pair is moved to slightly over-center in-line position for a toggle or locking effect; when both scissor link arms are in half-open V position, the blanket cylinders are disengaged from the plate cylinders. Abutment stop means, located between the blanket cylinders, receive the pivot points, when the link arms are in essentially in-line or toggle position, and adjustment bolts (42, 43, 44, 45) can control the position of the scissor link arms, when in V position for accurate adjustment of the locked position of the blanket cylinders.

REFERENCES:
patent: 1306726 (1919-06-01), Smith
patent: 3323452 (1967-06-01), Pasquinelli
patent: 3329086 (1967-07-01), Pullen
patent: 3470816 (1969-10-01), Piecha et al.
patent: 3817174 (1974-06-01), Paulson
patent: 4183297 (1980-01-01), Suiers
patent: 4301728 (1981-11-01), Jaffe et al.
patent: 4526099 (1988-07-01), Niemiro et al.
patent: 4815377 (1989-03-01), Skiera

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