Stamping device of lock catch die

The stamping device of the lock catch die comprises a lower installation base and an upper installation base, a telescopic rod is arranged between the lower installation base and the upper installation base, the bottom of the upper installation base is fixedly connected with an upper die, and the top of the lower installation base is fixedly provided with a lower die. A material returning assembly is arranged between the lower mounting seat and the upper mounting seat; the material returning mechanism comprises a material returning ejector rod, a side rod, a spring, a connecting rod, a first connecting rod, a second connecting rod, a transmission rod and a driving hammer. According to the technical scheme provided by the utility model, the upper mounting seat presses the side rod to enable the material returning ejector rod to descend and simultaneously punch a workpiece during punching by arranging the material returning mechanism, and after the upper mounting seat drives the die to lift, the spring pushes t