Punching device for battery tabs

The utility model discloses a punching device for a battery tab. The punching device comprises a base, a bottom plate, a fixed cutter, a battery mounting plate, a supporting frame, an air cylinder, a sliding rail, a sliding block, a lifting plate, a movable cutter and an elastic pressing mechanism. The bottom plate is mounted at the right end of the base, the fixed cutter is mounted at the left end of the bottom plate, and the battery mounting plate is mounted on the bottom plate; the supporting frame is installed at the left end of the base, the cylinder is installed at the upper end of the supporting frame, and a telescopic rod of the cylinder extends downwards and is connected with the lifting plate. The sliding rail is vertically installed on the right side of the supporting frame, the sliding block is slidably installed on the sliding rail, and the left side of the lifting plate is connected with the sliding block. The movable cutter is mounted at the bottom of the lifting plate, and the movable cutter i