Apparatus for stacking sheets

Details Apparatus for stacking sheets Apparatus for stacking sheets

1994-02-10

1995-03-14

Skaggs, H. Grant

Sheet feeding or delivering

Delivering

By endless conveyor

271214, 271312, B65H 4304

Patent

active

053971205

ABSTRACT:
An apparatus for stacking successive rapidly advancing sheets of a stream of sheets has a platform which receives successive sheets and descends at the rate of accumulation of one or more stacks thereon. The sheets are delivered by one or more overhead belt conveyors in cooperation with one or more lower belt conveyors. The front end turn of the lower reach of each overhead conveyor is deflected around a small-diameter rigid rod immediately in front of a stop for the leaders of successive sheets to reduce the likelihood of buckling during stacking, and one or more downwardly sloping ramps are provided in front of the stop to deflect the leaders of successive sheets in a downward direction toward the leaders of the immediately preceding sheets in immediate or close proximity of the stop. The stop, the rod and the overhead conveyor or conveyors are adjustable in several directions to facilitate a change of setup for the stacking of longer, shorter, wider or narrower sheets. At least one of the ramps has one or more openings for the front end turn or turns of the overhead conveyor or conveyors.

REFERENCES:
patent: 3729188 (1973-04-01), Stephenson
patent: 3971554 (1976-07-01), Stange
patent: 4547113 (1985-10-01), Welch et al.
patent: 4775141 (1988-10-01), Trenzen
patent: 5064185 (1991-11-01), Ricciardi
Bach, IBM Technical Disclosure Document, Paper Inserter and Stacker Bin, Feb. 1975, pp. 2535-2536.

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