Patent ID: 8684431

Claim:
A duplex-type product bag unloading apparatus that receives two filled and sealed product bags, which are gripped by separate pairs of grippers respectively on left and right edges thereof, suspended mouth-side-up at equal heights, and arranged in a single row in a width direction thereof at a predetermined distance apart from each other, from said pairs of grippers and discharges the bags onto a carry-out conveyor; wherein said unloading apparatus comprises: two downwardly opening and closing chucks for grasping, from above, areas around mouths of the product bags gripped by said pairs of grippers, and a chuck-moving mechanism for reciprocating said two chucks between a product bag-receiving position and a discharging position which is remote from the receiving position; and said two chucks being rotatably supported in a horizontal plane in a chuck-supporting frame that is a part of the chuck-moving mechanism and being rotated ninety degrees, with respect to the chuck-supporting frame, by the chuck-moving mechanism while the chucks are being moved between the receiving position and the discharging position, such that in the receiving position, said chucks are arranged in a single row along a bag width direction of the grasped product bags, said bag width direction being a width direction of grasping surfaces of the chucks, and in the discharging position, said chucks are arranged in a single row along a thickness direction of the grasped product bags, said thickness direction being a direction that is perpendicular to the grasping surfaces of the chucks.