Integral sand core turnover device

The utility model discloses an integral type sand core turnover device which comprises a bottom support, the bottom support comprises two first cross rods parallel to each other, a second cross rod is arranged between the two first cross rods, a vertical rotating supporting frame is arranged in the middle of each first cross rod, a turnover frame is arranged between the two rotating supporting frames, and the turnover frame is connected with the bottom support. The overturning frame is rotationally connected with the rotating supporting frame, the two ends of the bottom of the overturning frame are each provided with a reinforcing beam parallel to the first transverse rods, a supporting platform is arranged between the two reinforcing beams, a limiting support is vertically arranged at any end of the two first transverse rods, and a positioning structure is arranged at the top of the limiting support. A plurality of fixing structures are arranged on the side, close to the limiting support, of the overturning