Kneading knife for producing regenerated rubber and kneading machine thereof

The utility model discloses a kneading knife for regenerated rubber production and a kneading machine thereof, and relates to the technical field of regenerated rubber, the kneading knife comprises a main shaft and an auger connected to one end of the outer circle of the main shaft, the other end of the outer circle of the main shaft is connected with a multi-stage kneading knife mechanism, and the multi-stage kneading knife mechanism is suitable for pushing rubber to move away from the auger. The multi-stage kneading knife mechanism comprises a primary kneading knife assembly, a precise kneading knife assembly and a tail-end kneading knife assembly which are arranged in sequence, the primary kneading knife assembly is arranged close to the auger, and the precise kneading knife assembly is suitable for prolonging the kneading time of rubber. According to the rubber kneading device, rubber is conveyed through the auger, a plurality of kneading angles are formed under the cooperation of the first movable cutter