Blank turning machine for large-weight plates

The utility model relates to the technical field of turnover devices, and provides a blank turning machine for heavy plates, which comprises a plate clamping mechanism and a turnover mechanism, and is characterized in that the blank turning machine further comprises a positioning seat, the clamping mechanism comprises a clamping seat which is arranged above the positioning seat and is provided with a plate clamping groove, the outer wall of the clamping seat is of an arc-shaped structure, and the plate clamping groove is arranged on the outer wall of the clamping seat. The turnover mechanism comprises a first wheel body and a second wheel body which are arranged above the positioning seat, the axis direction of the first wheel body and the axis direction of the second wheel body are the same as the axis direction of the clamping seat, and the clamping seat is erected between the first wheel body and the second wheel body and has the rotation freedom degree by means of rotation of the first wheel body and/or t