Die casting machine
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United States of America Patent
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Mar 30, 2010
Grant Date -
Nov 22, 2007
app pub date -
May 15, 2007
filing date -
May 18, 2006
priority date (Note) -
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Abstract
A die casting machine 100 to fill by injecting molten metal into a die cavity 24 includes a variable displacement pump 16 driven by a servo motor 17 for discharging hydraulic fluid from a hydraulic fluid tank 40, an injection cylinder 11 with a slidable piston 12 assembled therein, hydraulic fluid pipes a and c for supplying hydraulic fluid discharged by the variable displacement pump 16 to the injection cylinder 11, hydraulic fluid pipes d, e1, g and a logic valve 14 connected to hydraulic fluid pipe c for supplying hydraulic fluid ejected from the injection cylinder 11 to hydraulic fluid pipe c with the piston 12 slid by the hydraulic fluid supplied to the injection cylinder 11.
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