Printing – Work supporting members – Grippers
Patent
1981-12-22
1984-10-09
Pieprz, William
Printing
Work supporting members
Grippers
271 82, B41F 1318, B41F 2104
Patent
active
044754590
ABSTRACT:
An impression cylinder for a rotogravure press having a recessed sheet stock gripper mechanism with a swivelling mechanism that swivels the grippers within the cylinder contour by revolving the grippers around a theoretical axis on the cylinder contour. The swivelling is rigidly and precisely constrained along an arcuate path by a plurality of arcuate guides disposed along the axial length of the cylinder. The opening and closing of the grippers and the swivelling of the grippers into the cylinder contour are caused to occur in sequence synchronized to the cylinder rotation by cam followers on gripper shaft pivot arms cooperating with cam followers journaled to the gripper shaft that are spring pressed onto cam surfaces fixed to the machine frame at the ends of the cylinder.
REFERENCES:
patent: 965128 (1910-07-01), Middleworth
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patent: 3663014 (1972-05-01), Wasylenko
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patent: 4250810 (1981-02-01), Fowler
patent: 4290595 (1981-09-01), Thunker
Difflipp Kurt
Ruh Jurgen
Wanke Johannes
M.A.N.--Roland Druckmaschinen Aktiengesellschaft
Pieprz William
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