Feeder of a paper sheet processing machine

Details Feeder of a paper sheet processing machine Feeder of a paper sheet processing machine

1993-12-13

1995-01-03

Schacher, Richard A.

Sheet feeding or delivering

Feeding

Separator and conveyor

271103, B65H 308

Patent

active

053779681

ABSTRACT:
A feeder in a paper sheet processing machine has a plurality of lifting suckers for lifting a paper sheet from a stack of paper sheets. After the sheet is lifted into a raised position it is entrained by a transport device and transported to a paper sheet processing unit. A force potential acts permanently on the lifting sucker downwardly in a direction towards the stack. The lifting sucker is lifted against the force potential in a cyclically controlled manner in a lifting and lowering stroke. A retaining collar is formed on the lifting sucker beneath which a retaining support engages so as to delay a return of the lifting sucker to its lower position and to stop the sucker in the lower position. The retaining support is mounted shiftably parallel to the stroke direction of the lifting sucker. Controlled pneumatics communicate with the retaining structure, so as to shift the same as a function of the stroke position of the lifting sucker.

REFERENCES:
patent: 4869489 (1989-09-01), Wirz
patent: 5064184 (1991-11-01), Liepert
patent: 5253858 (1993-10-01), Grieve

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