Dust prevention device of die cutting machine

The utility model discloses a die-cutting machine dust-proof device which comprises a die-cutting machine support and an upper die-cutting plate, the front end of the die-cutting machine support is electrically connected with a control panel, the four corners of the inner wall of the die-cutting machine support are movably connected with lifting piston rods, and the four corners of the inner wall of the upper die-cutting plate are fixedly connected with the upper ends of the outer walls of the lifting piston rods. A dust removal mechanism is positioned at the rear end of the die-cutting machine support. According to the dust-proof device of the die-cutting machine, when a paperboard is located between the upper die-cutting plate and the die-cutting machine support to carry out die-cutting operation, dust can be generated, and after the suction pump is started, the dust can be sucked into the connecting dust suction pipe from the expanded dust suction opening and conveyed into the dust collection movable box t