B - Operations – Transporting – 21 – D
Patent
B - Operations, Transporting
21
D
113/51
B21D 41/04 (2006.01) B21C 37/12 (2006.01) B21D 19/04 (2006.01)
Patent
CA 1282646
ABSTRACT OF THE DISCLOSURE An apparatus for crimping the leading edge of continuously produced spiral pipes is disclosed. The apparatus includes upper and lower passive crimping rollers, which are rotatably mounted adjacent each other in a holder. The holder is carried by a guide rail system which slides in the axial direction of the spirally moving pipe. The holder and rollers are rotated between a down position, where the continuously produced pipe will move freely over the crimping apparatus, and an up position where the leading edge of the pipe will pass between the upper and lower crimping rollers. When the crimping apparatus is in the up position and the leading edge of the pipe is between the crimping rollers, the lower roller is raised until the rollers cooperate to crimp the leading edge of the pipe. The spirally moving pipe will exert a force on these rollers, which causes the guide means, which car- ries the rollers, to move axially with the pipe. The crimping rollers will crimp the entire circumference of the pipe's leading edge as the crimping rollers move axially with the pipe and the leading edge of the pipe rotates between the rollers. When the entire leading edge of the pipe has been crimped, the holder and rollers are rotated to their down position, so that the pipe pro- duction can resume without obstruction by the crimping apparatus. - 42 -
550006
Cassan Maclean
Castricum Wilhelmus P.h.
Spiro America Inc.
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