| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic drive unit for an injection molding machine. <P>SOLUTION: The injection molding machine includes: an injection unit with a plasticizing screw and drive units for the movement of the injection unit and for the injection and after-pressure stroke of the plasticizing screw; a shape restriction unit having a drive unit for generating a mold-closing force during injection; and a drive unit for a workpiece ejection device. At least one of the drive units is a hydraulic drive unit with a hydraulic pump, a hydraulic cylinder and one or more control valves for controlling the hydraulic cylinder. The operating fluid of the hydraulic drive unit is an electrorheological (ER) fluid, and the at least one control valve for the hydraulic cylinder is an ER valve with at least one through-flow gap 2 for the ER fluid and a plate capacitor arrangement K for applying to an electric control field across the through-flow gap. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
