Sheet stacking machine

Details Sheet stacking machine Sheet stacking machine

1987-08-06

1989-02-21

Rolla, Joseph J.

Sheet feeding or delivering

Delivering

By endless conveyor

271214, 271216, 271217, 4147899, 4147931, 4147944, 414926, B65H 2968

Patent

active

048058904

ABSTRACT:
A machine for handling flat sheets employs a pair of conveyors in series to receive the sheets from a processing machine and to deliver them to a downwardly moving platform to form a stack thereon and to deliver the stack so formed. Both conveyors operate at a predetermined initial speed to deliver to the platform until a predetermined number of sheets is received from the processing machine. At that point both conveyors are speeded up for a short interval to clear the first conveyor and then the first conveyors is tilted upwards and slowed down which stops the flow to the second conveyor and accumulates the sheets on the first conveyor. The second conveyor continues at a high speed to complete the stack on the platform. The sheets are then discharged from the platform. The first conveyor is returned to its original angle of tilt and both conveyors are returned to their original speeds and the platform returns to its original height to start forming a new stack.

REFERENCES:
patent: 3191927 (1965-06-01), Hartbauer et al.
patent: 3580402 (1971-05-01), Tolf
patent: 3759402 (1973-09-01), Hitch
patent: 3892168 (1975-07-01), Grobman
patent: 3905595 (1975-09-01), Adams
patent: 4040618 (1977-08-01), Vermes
patent: 4111411 (1978-09-01), Graves
patent: 4188861 (1980-02-01), Kroeze et al.
patent: 4200276 (1980-04-01), Marsche

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