Copper bar punching machine

The utility model discloses a copper bar punching machine which comprises a top plate and a punching frame, supporting rods are fixedly connected to the four corners of the bottom end of the top plate, the punching frame is fixedly connected to the bottom ends of the supporting rods, a hydraulic cylinder is fixedly connected to the middle of the top end of the top plate, and the extending end of the hydraulic cylinder is fixedly connected with a die plate. Sliding grooves are formed in the two sides of the upper surface of the punching frame correspondingly, threaded blocks are arranged in the sliding grooves in a sliding fit mode, and clamping plates are fixedly connected to the upper surfaces of the two ends of the threaded blocks correspondingly. Through the structure, the hand wheel, the threaded rod, the threaded block and the die groove are arranged, the threaded rod is subjected to threaded rotation operation through rotation of the hand wheel, then the threaded rod and the threaded block are in thread