Rough forming assembly for round pipe forming

The utility model provides a rough forming assembly for round pipe forming, and belongs to the technical field of round pipe production equipment. The device comprises a lower roller module, a lower roller body of which the central axis is parallel to the bottom surface is arranged on the lower roller module; side roller modules are arranged on the two sides of the lower roller module respectively, a side roller body is arranged on each side roller module, the central axis of each side roller body inclines to the bottom face, the working face above each side roller body faces one side of the lower roller module, and an upper roller module capable of being matched with the corresponding side roller body is arranged above each side roller module. The side roller bodies are obliquely arranged, and the annular arc-shaped concave forming grooves formed in the roller surfaces of the side roller bodies can be matched with the arc-shaped outer chamfers on the upper roller body, so that the edge of the plate can be ro