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A METHOD AND A MOULD FOR FORMING AN EXPANSION, SUCH AS A SOCKET, IN A PIPE AND A PLASTIC PIPE
A METHOD AND A MOULD FOR FORMING AN EXPANSION, SUCH AS A SOCKET, IN A PIPE AND A PLASTIC PIPE
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机译:用于在管材和塑料管材中形成膨胀(如袜子)的方法和模具
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摘要
The present invention relates to a method and a mould for forming an expansion, such as a socket, in a plastic pipe, and a plastic pipe. According to the method, the heated end of the pipe is placed in an external mould (2) and pressed against the mould surface (6) to form a socket. Two grooves (8, 9) can be formed in the socket by a simple method, using a mould ring (12) which is separate from the other parts (3, 4) of the mould and by means of which the grooves of the socket are formed. The ring is simultaneously locked into the socket (7), thereby functioning as a reinforcement ring.
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