Positioning device for a rubber-blanket cylinder

Details Positioning device for a rubber-blanket cylinder Positioning device for a rubber-blanket cylinder

1996-04-29

1997-12-16

Burr, Edgar S.

Printing

Rolling contact machines

Rotary

101212, B41F 702

Patent

active

056972962

ABSTRACT:
A positioning device for a rubber-blanket cylinder which is supported in double-excentric bearing rings allows a positional adjustment of the rubber-blanket cylinder relative to a plate cylinder and a printing substrate supported on an impression cylinder. The plate cylinder and the impression cylinder have stationary axes of rotation relative to the frame of the printing unit. A printing gap is adjusted by the positioning device to varying printing substrate thickness, and in one terminal position, the rubber-blanket cylinder is fully disengaged from the other cylinders. The rubber-blanket cylinder is shifted along a positioning path with one segment following an arc of a circle which is concentric with the plate cylinder. The parameters of the bearing and the adjusting devices are defined such that the positioning path is traversed while the respective inner and outer bearing rings rotate continuously.

REFERENCES:
patent: 3366047 (1968-01-01), Hermach et al.
patent: 4183297 (1980-01-01), Skiera
patent: 4509425 (1985-04-01), Hahn et al.
patent: 4598640 (1986-07-01), Nawrath
patent: 4815377 (1989-03-01), Skiera

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