Left rear crossbeam forming die

The utility model relates to a forming die for a left rear girder. The utility model belongs to the technical field of stamping dies. The die comprises an upper die and a lower die, a pressing core isarranged at the bottom end of the upper die; the material pressing core comprises a supporting part and a material pressing part; the material pressing core is connected with a second nitrogen cylinder for driving the material pressing core to lift; the second nitrogen cylinder is fixed at the bottom end of the upper die; a groove is formed in the surface of the lower die; a blank holder is arranged in the groove; a plurality of supporting legs are arranged on the lower surface of the supporting part; the edge of the blank holder is rotationally connected with a plurality of swing arms; a driving assembly is arranged on the side, away from the center of the blank holder, of the swing arm, the driving assembly drives the upper portion of the swing arm to move in the direction close to thesupporting legs till the t