Internal mixer rotor

The utility model belongs to the technical field of rubber and plastic mechanical equipment, and particularly relates to a rotor of an internal mixer, which is characterized in that a spiral angle isincreased at a first long edge, a first short edge, a second long edge and a second short edge, the circumferential flow of a sizing material is changed, the lengths of the first long edge and the second long edge reach half of the spiral lead, and better axial movement performance is achieved; distribution and dispersion of the filler and the compounding agent are facilitated; along with the reduction of shearing temperature rise and rubber Mooney drilling degree, the widened first long edge, first short edge, second long edge and second short edge guarantee the sufficient shearing performance with the inner wall of the internal mixer, the tensile effect of the rubber is enhanced, and the sufficient flowing and dispersion of the rubber are facilitated; the convex first long edge, the convex first short edge, the