Shingling and stacking of conveyed sheet material

Details Shingling and stacking of conveyed sheet material Shingling and stacking of conveyed sheet material

1978-05-15

1980-04-29

Schacher, Richard A.

Sheet feeding or delivering

Delivering

Multiple discharge

271202, 93 93C, B65H 2966

Patent

active

042002761

ABSTRACT:
A conveyor system wherein sheets are conveyed from a cutter or the like at a given speed, are increased in speed before passing through a diverter, are slowed down after passing through a shingling nip to thereby overlap them, and then normally proceed at the latter speed to a stacker which is adapted to stack a fixed number of sheets before discharging the stack. A sheet sensor is disposed upstream of the diverter to count the number of sheets and, when the requisite number of sheets have passed, triggers the cycle for ultimate discharge of all downstream sheets in a single stack. The first phase of the discharge cycle includes speeding up of the conveyor line downstream of the shingling nip to move the downstream sheets away from those upstream which will be disposed in the next succeeding stack. As the trailing end of the group of fast-moving downstream sheets passes selected points, the shingle conveyor sections upstream thereof are slowed to partially delay the sheets which will form the next stack in their movement down the conveyor. When all of the sheets destined for the stack are in the stacker, the stacker is actuated to discharge the stack and thereupon the conveyors downstream of the shingling nip are slowly returned to their original normal speed for conveying the sheets which will form the next succeeding stack.

REFERENCES:
patent: 3772971 (1973-11-01), Dutro
patent: 4140310 (1979-02-01), Schroter

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