U-shaped cold roll forming die for steel plate

The utility model discloses a U-shaped cold roll forming die for a steel plate, and relates to the technical field of U-shaped bending of cold-bent steel plates, the U-shaped cold roll forming die for the steel plate comprises a lower die holder for the U-shaped cold roll forming die for the steel plate, a female die mechanism is arranged on the lower die holder, the female die mechanism is used for assisting in forming the steel plate, and the female die mechanism comprises a shaft sleeve arranged on the lower die holder. A rolling shaft is rotationally arranged on the shaft sleeve and fixedly penetrates through a female die assembly used for assisting a steel plate to form a U shape, a material guiding shaft used for assisting the steel plate to enter the inner bottom of the female die assembly is rotationally arranged at the top end of the female die assembly, a discharging mechanism is arranged on the side, away from the material guiding shaft, of the female die assembly, and a male die mechanism is arran