Protective device of laser cutting machine

The utility model discloses a laser cutting machine protection device which comprises a machine tool, telescopic grooves are formed in the middle positions of the two sides of the machine tool, telescopic rods are arranged in the telescopic grooves in a sliding mode, a protection plate is fixedly installed at the other ends of the telescopic rods, damping rods are arranged at the two ends of the side, close to the machine tool, of the protection plate in a sliding mode, and the other ends of the damping rods are rotationally connected with the machine tool. A telescopic groove is formed in the inner side of the protective plate, an emergency stop switch is fixedly arranged on the surface of the machine tool on one side of the telescopic groove, and a rubber touch block matched with the emergency stop switch is fixedly installed in the middle of the inner side of the protective plate. According to the multi-buffering cutting device, a first spring and a second spring are arranged, so that a sliding block is dr