发明名称 |
METHOD FOR BENDING THERMOPLASTIC PIPES |
摘要 |
A method for producing a bent pipe from thermoplastic material with end cross-sections, central points of which have in relation to one another a positional tolerance on the basis of LN xy/JAR xy/FAR xy in relation to one another. A straight pipe element is introduced into a tool and a portion of the straight pipe element is heated that is located in the bending region to a temperature which lies above a glass transition temperature of the thermoplastic material by a first temperature value. The straight pipe element is bent about the heated bending region of the tool by a freely selectable bending angle, which has a spatial alignment in an XYZ system of coordinates that is fixed with respect to the pipe. The pipe is then cooled below the glass transition temperature by a second temperature value. |
申请公布号 |
US2012325363(A1) |
申请公布日期 |
2012.12.27 |
申请号 |
US201213493356 |
申请日期 |
2012.06.11 |
申请人 |
KNEBL JUERGEN;LUETTMANN PETER;GROEL MICHAEL |
发明人 |
KNEBL JUERGEN;LUETTMANN PETER;GROEL MICHAEL |
分类号 |
B29C53/08;F16L9/00 |
主分类号 |
B29C53/08 |
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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