Method and apparatus for accumulating and dispensing tray-like o

Details Method and apparatus for accumulating and dispensing tray-like o Method and apparatus for accumulating and dispensing tray-like o

1979-12-05

1982-11-16

Paperner, Leslie J.

Material or article handling

With weighing

414 96, 414126, B65G 5730, B65G 5906

Patent

active

043593054

ABSTRACT:
This invention is an apparatus and method for accumulating or dispensing planar tray-like objects which are being received from or supplied to a conveyor system. It consists of a supporting frame on which there is an elevator. The elevator has a table on which there are transport rails or rolls compatible with the rest of the system in which the accumulating and dispensing apparatus is operating. The apparatus also contains a plurality of tray-retainers which are mounted on the frame and are normally located some distance above the plane in which the elevator table is in line with the external transport system. As trays or similar objects are received into the apparatus they are lifted one at a time by the elevator onto the bottom of an accumulating stack. The lowest tray of the stack is held by the tray-retainers while the higher members of the stack rest by gravity on the lowest tray. When a stack of the desired size is accumulated it may be released as a unit from the apparatus. The apparatus functions similarly when dispensing trays. A preformed stack is placed in the apparatus and is lifted by the elevator where it is held by the retainers. A release mechanism associated with the elevator releases trays one at a time from the bottom of the stack onto the elevator. When the elevator is dropped to its normal position the tray may be moved out onto the external transport system where it is ready for use. The apparatus may also be used to maintain an inventory of trays on a conveyor line where flow is sporadic so that trays may be delivered at a desired rate, when this might be different from the rate at which they were supplied from a source.

REFERENCES:
patent: 2538734 (1951-01-01), Patterson
patent: 2792950 (1957-05-01), Fenton et al.
patent: 2854153 (1958-09-01), Rydberg et al.
patent: 2978125 (1961-04-01), Freeman
patent: 3025057 (1962-03-01), Dale et al.
patent: 3233891 (1966-02-01), Denton et al.
patent: 3583579 (1971-06-01), Triggs et al.
patent: 3858732 (1975-01-01), Kemper

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