Demolding device of punching machine tool

The utility model provides a demoulding device of a punching machine, which comprises a punching mechanism, the punching mechanism comprises a lifting plate, a plate placing groove and a base, the plate placing groove is arranged on the upper surface of the lifting plate, and the base is arranged at the bottom of the lifting plate; and the demolding mechanism comprises a side supporting plate, four guide column spring mechanisms, a damper, two hydraulic buffers and a damping head. When the lifting plate is pressed, the hydraulic buffer and the guide pillar spring mechanism both bear corresponding compression force and are extruded, and impact force can be absorbed and dissipated through the damper and the damping head, so that the impact force on the hydraulic buffer and the guide pillar spring mechanism is effectively reduced; the guide rod slides in the fixed cylinder to ensure the accuracy and stability of the movement direction and track of the guide pillar spring mechanism, so that the guide pillar sprin