Box unpacking machine for iron mold sand coating process

The utility model discloses a case unpacking machine for swage sand coating process, which comprises a machine body, a travel switch and a controller, the machine body comprises a support plate and four support legs fixed below the support plate, a fixed plate and a movable plate are arranged below the support plate, the fixed plate is arranged between the support plate and the movable plate, and the travel switch is connected with the controller. At least two linear bearing through holes are formed in the supporting plate, linear bearings are arranged in the linear bearing through holes, the upper ends of the guide rods are arranged in the corresponding linear bearings in a sliding mode, the lower ends of the guide rods sequentially penetrate through the fixed plate and the movable plate, the fixed plate is fixed to the supporting plate through a screw rod, an ejector rod is fixedly arranged on the fixed plate, and a through hole allowing the ejector rod to penetrate through is formed in the movable plate. A