Injection moulding machine and hydraulic unit for this
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United States of America Patent
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Feb 11, 2014
Grant Date -
Aug 4, 2011
app pub date -
Jan 27, 2011
filing date -
Feb 4, 2010
priority date (Note) -
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Abstract
An injection molding machine includes an injection unit with drive units form the movement of the injection unit and for the injection and after-pressure stroke of the plasticizing screw, a tool clamping plate, a mould closing unit with a drive unit form the mould movement and tool closing force and a drive unit for a workpiece ejector device, wherein at least one drive unit is a hydraulic drive unit with a hydraulic pump, a hydraulic cylinder and control valves to activate the hydraulic cylinder, and wherein the hydraulic fluid is an electrorheological fluid and the control valve for the hydraulic cylinder is an electrorheological valve.
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