Package making – Methods – With contents treating
Patent
1985-04-29
1986-04-29
Sipos, John
Package making
Methods
With contents treating
53117, B65B 6304
Patent
active
045848203
ABSTRACT:
A reciprocative apparatus individually folds a plurality of thin, limp, sheet-type articles, such as sandwich bags, and loads them into a carton. The apparatus may include a delivery assembly for sequentially transferring the bags from a conveyor belt to a folding station. A pivotally operated swatter is described for such delivery.
The folding station includes a pair of trays forming a platform and a pair of flippers for sequentially folding end portions of a bag upon its middle portion. The initially operated flipper is operated by a pneumatic cylinder. The secondarily operated flipper is connected to a carrier assembly which is supported by springs attached to a frame. Another pneumatic cylinder is also connected to the carrier assembly and to the second flipper through a linkage. When retracted, its cylinder rod attempts to pull down the cylinder assembly, but the spring force is sufficiently great that it is easier for the second flipper to pivot to a horizontal position, as determined when a link member contacts a stop within its flipper arm.
Then, as the cylinder rod continues to pull downwardly, it overcomes the force of the springs and moves the carrier assembly downwardly, causing the trays to move downwardly and sidewardly while the second flipper quickly pushes the folded bag toward the bottom of a carton disposed therebeneath and suitably on a conveyor. The spring force may also be adjusted to provide a packing force for "stomping" the folded bags into the carton. Upon reversal of the cylinder, the second flipper rises and then pivots as the trays revolve inwardly to re-establish the platform for receiving the next bag.
REFERENCES:
patent: 1708534 (1929-04-01), Christman
patent: 1909050 (1933-05-01), Ferguson
patent: 2785669 (1957-03-01), Billeb
patent: 3919827 (1975-11-01), Larson
patent: 4008887 (1977-02-01), Karolyi
patent: 4037386 (1977-07-01), Stoman
patent: 4218962 (1980-08-01), Cunningham
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Sipos John
Speciale Charles J.
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