Slitting device of film slitting machine

The utility model relates to a slitting device of a film slitting machine, which comprises a rack, a support rod, a sliding seat and a cutter, two ends of the support rod are fixed on the rack and are horizontally arranged, the sliding seat is connected on the support rod in a sliding manner, the cutter is fixed on the sliding seat, a support frame is fixed on the side wall of the sliding seat, and the cutter is fixed on the support frame. A T-shaped pull rod is connected to the supporting frame in a sliding mode, the pull rod is connected with the supporting frame through an elastic piece, two oppositely-arranged clamping plates are connected to the supporting frame in a sliding mode, and the pull rod moves in the direction close to the supporting rod under the elastic force effect of the elastic piece to enable the two clamping plates to be close to each other through a conduction assembly. A containing cavity for clamping the supporting rod is formed between the two clamping plates. The utility model has t