Flattening device for decoration

The flattening device comprises a lower extrusion base, an installation plate and two lug plates symmetrically arranged at the top end of one side of the lower extrusion base, H-shaped supporting legs are arranged on the two sides of the bottom end of the lower extrusion base, and a rectangular groove for a rectangular plate to be movably arranged is formed in the center of the top of the end, away from the lug plates, of the lower extrusion base. Round grooves allowing roller bearings to be fixedly installed are formed in the centers of the opposite faces of the two lug plates, shaft rods are movably arranged in the two roller bearings, feeding auxiliary rollers are fixedly installed on the outer edge faces of the shaft rods, a threaded sleeve is fixedly installed in the center of the bottom end of the rectangular plate, and a cavity groove is formed in the center of the bottom end of the threaded sleeve. According to the flattening device for decoration, a worker can take down a metal plate conveniently, th