Injection molding machine

The utility model discloses an injection molding machine. The injection molding machine comprises servo drive motors, a sol and injection molding mechanism, a hopper, an injection molding mold, an ejection servo motor, a mold opening and closing mechanism and mold assembly servo motors, wherein the sol and injection molding mechanism is provided with a screw which is a millstone-type screw. According to the utility model, the millstone-type structure is adopted for the screw, so that the volume of the traditional injection molding machine is reduced; the cost of a hot rubber is reduced; no stub bar is produced, and zero waste material is achieved, and energy sources and resources are saved.