Automatic upper cutting die replacing structure of plate turnover machine

The utility model discloses an upper cutting die automatic replacement structure of a plate turnover machine, which comprises an upper die, a lower die, a lower die, a lower cutting die and a lower cutting die, wherein the upper die is longitudinally and slidably arranged on a rack and can slide along the Z-axis direction; the upper cutting die is arranged on the upper die in a sliding manner and is used for pressing a metal plate; the transverse moving assembly is arranged on the upper die, and a sliding plate can slide in the Y-axis direction; the first driving assembly is fixedly arranged on the sliding plate, a plug is fixedly arranged at the end of an output shaft and matched with a positioning hole of the upper cutting die, when the plug is matched with the positioning hole, the upper cutting die can transversely move in the Y-axis direction under the action of the transverse moving assembly, and the upper cutting die can be driven by the transverse moving assembly to move in the Y-axis direction throug