发明名称 |
Apparatus for sealing a pour head in a mold for forming composite products |
摘要 |
A mold assembly for manufacturing composite plastic products includes a mold cavity part and a lid, which is joined to form a cavity for foam precursors. The precursors expand in the cavity in a known manner to fill the cavity with a suitable layer of foamed material, such as foamed urethane. The mold cavity supports an exterior shell and the lid supports an insert for reinforcing a finished composite product. A sleeve is integrally formed on the preformed shell and it in turn is located within an access port formed through wall of the cavity part to define a slideway for receipt of a pour head extension. The extension is selectively clamped and unclamped with respect to the shell sleeve by an inflatable seal clamp which is formed as an annular ring with a pressurizable passage connected to a source of selectively applied pressure. With the passages pressurized, an apex on the inside diameter of the ring will apply a highly localized pressure against the outer surface of the shell sleeve to hold the inner surface thereof in tight sealing engagement with the pour head extension.
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申请公布号 |
US4743188(A) |
申请公布日期 |
1988.05.10 |
申请号 |
US19870063826 |
申请日期 |
1987.06.19 |
申请人 |
DAVIDSON TEXTRON INC. |
发明人 |
GRAY, JOHN D.;HAGAR, WILLIAM;GAUDREAU, LAURENT |
分类号 |
B29C33/00;B29C44/12;B29C44/58;(IPC1-7):B29C45/16;B29C45/57 |
主分类号 |
B29C33/00 |
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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