Machining die for zinc alloy die casting

The machining die for the zinc alloy die casting comprises a bottom die base, the top face of the bottom die base is fixedly connected with a limiting column, the top end of the limiting column is fixedly connected with a top plate, and the middle position of the top face of the top plate is in bolted connection with a vertical hydraulic cylinder; the vertical hydraulic cylinders penetrate through the top plate through telescopic rods to be connected with a top die device, a sliding cavity is formed in the middle of the top face of the bottom die base, two sets of symmetrically-arranged movable dies are arranged on the inner side of the sliding cavity, and die driving devices are installed at the bottoms of the movable dies. The movable die can be automatically separated through the first driving rod and the second driving rod, blanking of zinc alloy die castings is facilitated, the arranged vertical hydraulic cylinder can drive the buffer plate through the telescopic rod, the buffer plate drives the device b