Material or article handling – Apparatus for moving intersupporting articles into – within,... – Stack forming apparatus
Patent
1994-12-15
1996-09-03
Merritt, Karen B.
Material or article handling
Apparatus for moving intersupporting articles into, within,...
Stack forming apparatus
4147938, 4147942, 4147943, B65G 5706, B65H 2934
Patent
active
055518338
ABSTRACT:
An apparatus and method for stacking bags of granulated material on a pallet which is fixed in position during the stacking operation is disclosed. A bag supporting plate is mounted on an upper end of an apparatus frame for reciprocal horizontal movement between an extended bag receiving position covering a first area and a retracted position wherein the first area is uncovered. A fence mounted on the frame over the path of movement of the plate confines a bag deposited on the plate to the first area as the plate slides from under the bag to its retracted position. A bag carriage assembly is mounted in the frame under the first area for reciprocal vertical movement between a maximum raised position for receiving the bag from the plate and a variable lower position for discharging the bag from the assembly to the pallet. A first air cylinder moves the plate and a cable operated air cylinder moves the assembly. The assembly supports the bag on a pair of door panels which have a closed position secured by a pair of double acting air cylinders. The securing cylinders operate to permit the door panels to gravitate to their open position to discharge the bag to the pallet when the assembly reaches its lower position. Sensors are provided which sense when the assembly is in its raised and lowered position, when a bag has been deposited on the plate, and when the plate has reached its retracted position.
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Hess Douglas
Merritt Karen B.
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