Die-casting box body shape correcting device

The utility model discloses a die-casting box body shape correcting device which comprises a base, side edge extrusion structures, a flattening shape correcting mechanism and a top plate, the side edge extrusion structures comprise four side edge extrusion structures, and the four side edge extrusion structures are distributed on the base in a cube shape. Four side edge extrusion structures are arranged on the base, a die-casting box is placed on the base in the middle positions of the four side edge extrusion structures, four supporting columns are arranged at the four corners of the base, a top plate is arranged at the tops of the supporting columns, and a flattening and shaping mechanism is arranged on the lower surface of the top plate and located over the side edge extrusion structures. The flattening and shape correcting mechanism comprises a flattening plate, a downward pressing air cylinder set and a limiting sliding rod. The side edge extrusion structure can extrude and correct four side pieces of th