Die

A mold comprises a male mold and a female mold, the male mold comprises a male mold core, a male mold plate and a male mold bearing plate, the male mold core is provided with a positioning groove used for positioning a workpiece and a sliding groove, the sliding groove is communicated with the positioning groove, and the sliding groove can contain the workpiece; the die further comprises a floating mechanism, the floating mechanism comprises a floating piece, an elastic piece and a supporting piece, the floating piece is used for bearing the workpiece, the floating piece is sleeved with the elastic piece, the supporting piece slidably penetrates through the male die plate, the top end of the supporting piece is used for pushing the floating piece, the bottom end of the supporting piece is connected with the male die bearing plate, and the male die bearing plate drives the supporting piece to ascend and descend. Before the mold is closed, the floating piece is driven by the elastic piece to descend along the s