PURPOSE: To improve the operation rate of a plate processing machine without any need of manual operation, and realize space saving and automation by providing a product separation device within a raw material shelf adjacent to the machine, and delivering a product and a skeleton separately.

CONSTITUTION: A raw material shelf 1 is provided at a position adjacent to a plate processing machine 5, and a plurality of pallets' 19 are stored on the shelf 1. In addition, a pallet 19 carrying a desired raw material W is free to enter and egress from the shelf 1 via an elevator 3, and the pallet 19 is transferred to the work table 63 of the machine 5 for cutting the material W. A rotating body 9 as a product separation device 7 is provided under the shelf 1, and the pallet 19 placed on the pallet support section 77 of the body 9 is pressed and supported with a conveyor 115. Furthermore, the rotation of the body 9 is reversed to deliver the raw material or workpiece W, and a vibration application device 11 for separating a product from a skeleton is provided at the intermediate position of the delivery. Also, a pallet support frame 185 is provided for carrying and supporting an empty pallet 19.