Four-roller synchronous deformation mechanism of profile steel forming mill

The utility model discloses a four-roller synchronous deformation mechanism of a profile steel forming mill, and relates to a metal section forming mill. The four-roller synchronous deformation mechanism comprises frame-type supports which are arranged in a left-and-right symmetry mode. Lower roller supports and upper roller supports are symmetrically arranged in the frame-type supports on the two sides respectively, a lower power roller and upper power-free rollers are installed between the frame-type supports on the two sides, vertically-arranged first lead screws are fixedly connected to the middles of the upper ends of the upper roller supports of the frame-type supports on the two sides respectively and upwards penetrate through the frame-type supports respectively, lateral roller frames are symmetrically fixed to the outer sides of the lower roller supports on the two sides, lateral roller bases are arranged on the lower roller supports on the two sides respectively, lateral rollers are axially position