Title:
【発明の名称】螺旋成形管の波形付け装置及び方法
Document Type and Number:
Japanese Patent JP2003512933
Kind Code:
A
Abstract:
A method and apparatus for forming corrugated pipe is disclosed. The pipe forming apparatus includes a selectively operable corrugation module having an inner corrugation roller movably mounted relative to an outer corrugation roller via a cylinder assembly. The method includes forming a length of spiral pipe without corrugations, engaging a corrugation module to introduce a desired length of corrugated pipe, and retracting the corrugation unit to allow a second length of uncorrugated pipe to form. The uncorrugated portion of the pipe is then severed cleanly using overlapping inner and outer cutting knives.
Inventors:
Castricum Wilhelm SP H
Application Number:
JP2001534524A
Publication Date:
April 08, 2003
Filing Date:
November 03, 2000
Export Citation:
Assignee:
Lindab Accevolague
International Classes:
B21C37/12; B21C37/20; B21D15/04; (IPC1-7): B21C37/12; B21C37/20; B21D15/04
Attorney, Agent or Firm:
Minoru Nakamura (9 outside)