Method and apparatus for cold joining flanges and couplings...

Details Method and apparatus for cold joining flanges and couplings... Method and apparatus for cold joining flanges and couplings...

B - Operations, Transporting

21

D

B21D 39/06 (2006.01) F16L 19/02 (2006.01)

Patent

CA 2560556

A method for joining flanges or other couplings to pipes, wherein a plurality of radially expanding segments (10) with circular ridges (11) on a tool inserted into the pipe (1), press beads (5, 6) in the pipe wall into corresponding grooves (3, 4) in the surrounding coupling element (2), where the pipe end, by means of a projection on the segments, is given an overbending outwards that prevents the pipe end from tapering inwards during the pressing of the beads. The invention comprises the interior configuration of the coupling element as well as a tool for pressing the beads.

La présente invention concerne un procédé permettant de raccorder des collerettes ou tout autre raccord à des tuyaux. Plusieurs segments (10) s'étendant de manière radiale et présentant des saillies circulaires (11) sont disposés sur un outil inséré dans le tuyau (1) ; des billes de pression (5, 6) sont placées dans la paroi du tuyau dans des rainures correspondantes (3, 4) dans l'élément de raccordement périphérique (2). L'extrémité du tuyau, grâce à une projection ménagée sur les segments, est pliée avec compensation vers l'extérieur, ce qui permet d'empêcher l'extrémité du tuyau de s'amincir vers l'intérieur pendant la pression des billes. La présente invention concerne la configuration interne de l'élément de raccordement ainsi qu'un outil permettant de presser les billes.

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