Sheet control apparatus and method for sheet stacker

Details Sheet control apparatus and method for sheet stacker Sheet control apparatus and method for sheet stacker

1990-01-05

1991-08-13

Valenza, Joseph E.

Sheet feeding or delivering

Delivering

With transfer means between conveyor and receiver

271198, 271213, 4147908, B65H 2968

Patent

active

050390830

ABSTRACT:
A sheet stacker includes a belt conveyor having shingled sheets which includes aligned crowned belt pulleys rotating endless belts. A vertically movable table is located such that the conveyor propels the sheets falling downwardly to form a pile of sheets thereon. A fork unit moves inwardly across the stacker as a temporary support during pile removal. A brake and clutch unit is connected to the pulleys. A sheet control includes pivoted fingers aligned with the belts and secured to a shaft. An actuating arm pivots the shaft to move the fingers into engagement with said aligned belts on the downstream side of the pulleys. A pneumatic control provides a conjoint control to actuate said brake and pivot the finger shaft for momentarily stopping sheet movement in synchronism with the actuation of the fork.

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