External film feeding device of UV ink-jet printer

The utility model relates to an external film feeding device of a UV ink-jet printer, which comprises a base, side blocks are arranged on two sides of the base, a two-way screw is arranged in the base, two ends of the two-way screw respectively extend into the side blocks on two sides, two side surfaces of the two-way screw are in threaded connection with thread bushings, and the two side surfaces of the two-way screw are in threaded connection with the thread bushings. Supporting plates are connected to the surfaces of the threaded sleeves through rotating shafts, vertical plates are connected to the ends, away from the threaded sleeves, of the supporting plates through rotating shafts, sliding grooves are formed in the surfaces, close to each other, of the two vertical plates, sliding blocks are slidably connected to the interiors of the sliding grooves, and a pressure roller is connected between the two sliding blocks; according to the external film feeding device of the UV ink-jet printer, the pressure ro