发明名称 |
Mold clamping control method for injection molding machine |
摘要 |
A mold clamping control method capable of preventing any warp or strain on a molded product without stopping an injection pressure holding process so as to cancel the pressing force of an injection screw. In a series of injection and pressure holding processes, a movable platen is retracted from a mold clamping dwell position P2 to a mold opening dwell position P1, so that a substantial volume of a cavity of a mold is increased to temporarily lower the internal pressure of the cavity, thus making an internal stress of resin to be a product uniform to eliminate stress strains. In this method, an injection molding is performed to produce a precise product having no warp or strain even in molding a light guide plate which is subjected to molding abnormalities by the temporary stoppage of the injection pressure holding process according to the conventional method.
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申请公布号 |
US5772932(A) |
申请公布日期 |
1998.06.30 |
申请号 |
US19960688245 |
申请日期 |
1996.07.29 |
申请人 |
FANUC LTD. |
发明人 |
KAMIGUCHI, MASAO;HOSOYA, YUICHI;SENDA, KOJI;NEKO, NORIAKI |
分类号 |
B29C45/64;B29C45/70;B29C45/76;B29C45/80;(IPC1-7):B29C45/77 |
主分类号 |
B29C45/64 |
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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