Plate positioning device for hydraulic gate type plate shearing machine

The plate positioning device for the hydraulic gate type plate shearing machine comprises the plate shearing machine, a base is installed at the bottom end of the plate shearing machine, a feeding mechanism, a rotating mechanism and a machining mechanism are arranged at the top end of the base from left to right, a discharging mechanism is arranged on one side of the rotating mechanism, and the machining mechanism is arranged on the other side of the rotating mechanism. A first supporting plate is arranged in the feeding mechanism, a first groove hole is formed in the top end of the first supporting plate, a limiting plate is fixedly connected to the top end of the first supporting plate, and a first telescopic rod is arranged between the opposite sides of the first supporting plate. According to the plate feeding device, after a plate is machined, the second telescopic rod moves upwards so that the plate can be jacked up, the conveying chain rotates anticlockwise so that the plate can be conveyed to the posi