Die for producing cover

The utility model discloses a mould for producing a cover, which relates to the technical field of moulds and comprises a worktable, a U-shaped plate is mounted at the top of the worktable, and an air cylinder is mounted on the inner wall of the top of the U-shaped plate. During use, a material is firstly placed on the workbench, then the air cylinder is started, the air cylinder drives the moving block to descend, the moving block moves to drive the upper die and the L-shaped plate to descend, the L-shaped plate descends to enable the extrusion plate not to extrude the trapezoidal block, at the moment, the arc-shaped plate is reset under the action of the reset spring, and at the moment, the air cylinder continues to output to complete stamping. When stamping is completed, an air cylinder is contracted, the air cylinder contracts to enable a moving block to ascend, the moving block ascends to enable a lead screw to rotate reversely, the lead screw rotates reversely to enable an extrusion plate to extrude a t