Secondary shaping roller assembly for rolling welding forming of convex guide rail

The utility model discloses a secondary shaping roller assembly for rolling welding forming of a convex guide rail. The secondary shaping roller assembly comprises a base, and a first roller assembly, a second roller assembly and a third roller assembly which are arranged on the base, the first roller assembly comprises a first mounting seat arranged on the base, a lower roller and an upper roller which are horizontally arranged and used for auxiliary positioning and guiding of the convex guide rail are arranged on the first mounting seat side by side, and the second roller assembly comprises a second mounting seat which is arranged on the base and is adjustable in position in the feeding direction. The second roller assembly comprises a second mounting seat arranged on the base, two first side rollers used for extruding the upper side faces of the two sides of the convex guide rail correspondingly are arranged on the second mounting seat in parallel, the third roller assembly comprises a third mounting seat