Punching device for automobile motor cover

The utility model discloses an automobile motor cover punching device which comprises a bottom plate, a top plate and a supporting block, the top plate is located above the bottom plate and connected with the bottom plate through a supporting plate, the supporting block is arranged above the bottom plate and connected with the bottom plate in a sliding mode, a first through hole is formed in the supporting block in the front-back direction, and a collecting assembly is detachably arranged in the first through hole. The supporting block is provided with a discharging opening communicating with the collecting assembly, a punching assembly is slidably arranged on the top plate, the punching end of the punching assembly is located over the discharging opening, a driving assembly used for driving the supporting block to move is arranged on the bottom plate, and the supporting block and the punching assembly are connected through a connecting assembly. A fixing assembly used for fixing a workpiece is arranged on th