Method and apparatus for producing helically wound lock-seam...

Details Method and apparatus for producing helically wound lock-seam... Method and apparatus for producing helically wound lock-seam...

B - Operations, Transporting

21

C

B21C 37/12 (2006.01) F16L 9/16 (2006.01)

Patent

CA 2214493

In a method for producing helically wound lock-seam tubing (33), a metal strip is fed to a forming head in which the tubing is formed. In order to prevent lock-seam slip, a clinching roller device (30-40) forms interlocking spaced deformations (41) on the lock-seam (37). An apparatus for such production comprises a clinching roller (30) provided with a recess (40) for forming the deformations (41) against a counter-roller (34).

Dans un procédé de production d'un tube (33) à sertissage enroulé de manière hélicoïdale, une bande de métal est acheminée à une tête de formage dans laquelle le tube est formé. Afin d'empêcher un glissement du sertissage, un dispositif à rouleau de sertissage (30-40) forme des déformations de verrouillage mutuel espacées (41) sur le sertissage (37). Un appareil destiné à ladite production comprend un rouleau de sertissage (30) doté d'un évidement (40) destiné à former lesdites déformations (41) contre un contre-rouleau (34).

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