Sheet feeding or delivering – Feeding – Separator and conveyor
Patent
1980-07-03
1982-09-21
Stoner, Jr., Bruce H.
Sheet feeding or delivering
Feeding
Separator and conveyor
271 30R, 271149, 271157, 198774, 414118, 414121, B65H 104, B65H 126, B65H 308
Patent
active
043503306
ABSTRACT:
The invention is an improved bag unit feeder, particularly paper bag units in conjunction with other manufacturing apparatus. The bag unit feeder conveys selected stacks of bag units or bags, or partially manufactured bags, such as bag tubes, in an indexed forward movement and subsequently dispenses them one at a time. The bag unit feeder accepts one of the selected stacks during each indexed forward movement of the conveyor mechanism and then picks up individual bag units, one at a time, from the top of the selected stack and feeds each bag unit automatically to the next operation. The individual bag units are picked up by suction cups with restraining elements of the structure aiding in the process. The restraining elements consist of a novel and unique stabilizing influence of the next succeeding stack of bag units partially overlapping the stack being dispensed, special restraining hold-down rods located adjacent to the suction cups which bend the bag unit as it is picked up, and hook-like fingers near the corners of the leading edge of the bag unit, all of which tend to make the separation of the bag unit from the stack a peeling-type action. This manner of pick up counteracts a tendency of two bag units to cling together. The bag units thus dispensed are fed to the next operation by a conveyors.
REFERENCES:
patent: 3399886 (1968-09-01), Brockardt et al.
patent: 3705719 (1972-12-01), Polit et al.
patent: 4023667 (1977-05-01), Appel
patent: 4148473 (1979-04-01), Johnson
patent: 4189136 (1980-02-01), Robinette
patent: 4223883 (1980-09-01), Dunn et al.
Finch Walter G.
Stoner Jr. Bruce H.
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