B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
B65G 59/02 (2006.01) B65G 47/06 (2006.01) H02J 7/00 (2006.01)
Patent
CA 2130627
An unstacking apparatus for removing individual trays from stacks thereof and placing the selected trays individually on a conveyor. The apparatus having a frame defining a horizontal unstacking area. And including an object selecting head, the selecting head secured to the frame above the unstacking area and movable by a head drive cylinder vertically between a head up position and a lower tray contacting position. The selecting head having a plurality of tray contacting heads operable by horizontal drive cylinders for moving the contacting heads into engagement with a top most tray of a stack thereof positioned in the unstacking area when the selecting head is in the tray contacting position with the top most object. The selecting head is then operable to the head up position for carrying the top most tray there with. Tray holders are secured to the frame at a level thereon below the selecting head when it is in the head up position and operable by drive cylinders to a position below the selecting head. The horizontal cylinders are then retracted to release the selected object whereby it falls from the selecting head onto the tray holders. A fast acting pushing cylinder is secured to the frame for pushing the selected object from the tray holders onto a conveyor extending adjacent the unstacking area in a longitudinal direction transverse to the direction of travel of the tray as it is pushed from the tray holders. The conveyor includes sets of three switches and two stops along the length thereof for permitting travel of the trays there along wherein the trays are prevented from contacting one another.
Donovan Richard P.
Jensen James R.
Loucks Benjamin B.
Miltz Bruce M.
Myers Hugh I.
Cannon Equipment Company
Ridout & Maybee Llp
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