Metal cover plate machining punching device

The utility model discloses a metal cover plate machining punching device, which relates to the technical field of cover plate machining and comprises a machining base, four supporting rods are fixedly connected to one side of the top of the machining base, and an electric telescopic rod is fixedly connected to the other side of the top of the machining base. A same top plate is fixedly connected among the tops of the four supporting rods, a second hydraulic cylinder is fixedly connected into the top plate in a sleeved mode, a mounting base is fixedly connected to the output end of the second hydraulic cylinder, a punching machine body is arranged at the bottom of the mounting base, and a push plate is fixedly connected to the output end of an electric telescopic rod. A conveyor is arranged on one side of the top of the machining base. On the premise that automatic feeding is guaranteed, the metal cover plate cannot be subjected to external interference to cause position deviation, unification of punching pos