发明名称 |
Injection unit for a pressure diecasting machine |
摘要 |
Disclosed is an injection unit for a hot-chamber pressure die casting machine, providing an electromechanical drive for the plunger. A spring element (16) in the form of a plastic component or a hydraulic spring is inserted in between the plunger and the connecting rod (9) in order to absorb the moments of inertia which occur when the plunger drive mechanism is shifted from the phase in which the mould is filled to a pressure dwelling phase. Said spring element is compressed by the additional travel of the connecting rod after the motor is decelerated. The extent of said compression can be selected in such a way that the resulting axial force which is exerted upon the plastic component or hydraulic spring suffices to create the desired pressure dwell in the melt. |
申请公布号 |
EP1057560(A1) |
申请公布日期 |
2000.12.06 |
申请号 |
EP19990109360 |
申请日期 |
1999.06.01 |
申请人 |
OSKAR FRECH GMBH & CO. |
发明人 |
FINK, ROLAND;ERHARD, NORBERT, DR.-ING.;NOSCHILLA, HERBERT;STILLHARD, BRUNO;SIEGRIST, RONALD |
分类号 |
B22D17/04;B22D17/02;B22D17/20;B22D17/32 |
主分类号 |
B22D17/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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