Injection apparatus for electric injection molding machine

A method for resin is injected electric molding emitted from the emission device molding machine, including: a drive unit housing; the metering motor; injection motor disposed coaxially with the metering motor; connected to said metering motor and third drive force transmission means restraint relative axial movement; a first drive force transmission means between the screw, the rotation is converted into the movement direction of the linear movement of the rod forward converting means; constrained relative rotation of the second driving force transmission means. Since the screw forward and backward, or turn to persuade without the use of belts, so that no noise is generated during drive, easy maintenance, and can improve the control accuracy of the screw speed, position and the like.