公开(公告)号：US3806301A

公开(公告)日：1974-04-23

申请号：US12034171

申请日：1971-03-02

Applicant: DYNAMIT NOBEL AG

Inventor： WISSINGER W ,  OSTERHAGEN G ,  KREBSBACH F

IPC: B29C57/02 ,  B29D1/00 ,  B29C17/00

CPC classification number: B29C57/02 ,  B29D1/00 ,  B29L2023/22 ,  Y10S425/218

Abstract: A process for forming, at the end of a pipe fabricated from a synthetic resin material, a socket having external ribs, beads, projections, or the like, extending in cross-sectional planes or helically, and apparatus for implementing the novel process, wherein the process contemplates the insertion of a temperaturecontrolled mandrel in the end of an initially-heated pipe, simultaneously imparting a rotary motion to the mandrel as it is axially advanced and, upon cooling of the pipe end, withdrawal of the mandrel with further rotary motion thereof.

Abstract translation: 在由合成树脂材料制成的管的端部处形成具有在横截面或螺旋状延伸的外部肋，珠，突起等的插座以及用于实现新方法的装置的方法，其中 该方法考虑将温度受控的心轴插入初始加热的管的端部，同时在心轴轴向前进时给心轴提供旋转运动，并且在冷却管端时，心轴以进一步的旋转 其运动。