Adjustable deformation preventing device for angle iron bending

The invention provides an adjustable deformation preventing device for angle iron bending. The adjustable deformation preventing device for angle iron bending comprises a lower sector plate, an upper section plate and a lifting oil cylinder. Two lugs and two lead screw bases are arranged on the upper sector plate. The surfaces, located on the same side, of the two lugs are fixedly connected with a first L-shaped guide rail. An auxiliary wheel moving lead screw, a second L-shaped guide rail and a big carrier roller are installed between the two lugs, and the auxiliary wheel moving lead screw, the second L-shaped guide rail and the big carrier roller are parallel to one another. An auxiliary wheel table matched with the auxiliary wheel moving lead screw is arranged on the auxiliary wheel moving lead screw. The upper surface of the auxiliary wheel table is connected with a vertical auxiliary wheel. A deformation preventing wheel moving lead screw is arranged between the two lead screw bases. A deformation preventing wheel table matched with the deformation preventing wheel moving lead screw is arranged on the deformation preventing wheel moving lead screw. The upper surface of the deformation preventing wheel table is connected with a vertical deformation preventing wheel. A smaller carrier roller parallel to the deformation preventing wheel moving lead screw is installed on the side face of the deformation preventing wheel table. The adjustable deformation preventing device for angle iron bending is simple in structure and high in adjustability. By additionally arranging the deformation preventing devices at the two sides of three driving rollers of an existing angle iron bending device, deformation of the edge of angle iron can be effectively prevented when the angle iron is bent.