发明名称 |
COLLAPSIBLE MOULD CORE |
摘要 |
The invention relates to a collapsible core for a mould. The core comprises three relatively movable assemblies. The first assembly carries a cone, the second assembly carries an inner set of segments which form part of the core surface and engage the cone and the third assembly carries outer segments moved by inclined pins on the second assembly. As the assemblies are moved together the outer segments move radially outwards and the inner segments move axially in between them. Then the inner segments move radially outwards and the cone fills the center of the core. On reversal of the movement, the core is collapsed to enable it to be withdrawn from the moulded article. |
申请公布号 |
DE3666178(D1) |
申请公布日期 |
1989.11.16 |
申请号 |
DE19863666178 |
申请日期 |
1986.08.20 |
申请人 |
R. CLARKE & CO. (MOULDS) LIMITED |
发明人 |
LITTLE, WALTER WILLIAM;CLARKE, PETER REGINALD |
分类号 |
B29C33/48;(IPC1-7):B29C33/48;B29C33/76 |
主分类号 |
B29C33/48 |
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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