| 摘要 |
What is disclosed is an injection unit for an injection molding machine, comprising a screw which may be driven by means of a spindle drive. Driving of the spindle drive is effected by means of an electric motor. In addition, through the intermediary of a hydraulic cylinder a force acting in the axial direction is transmitted to the screw of the injection unit. In accordance with the invention, the electric motor drives a pump whereby a pressure chamber of the cylinder may be supplied with more pressure medium than is required in an axial displacement of the cylinder.
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