Device for bending tubes or profiled sections with...

Details Device for bending tubes or profiled sections with... Device for bending tubes or profiled sections with...

B - Operations, Transporting

21

D

B21D 7/024 (2006.01)

Patent

CA 2641071

The invention concerns a bending head for example for a winding/stretching bending technique, comprising a (bending-jaw form) assembly rotating about an axis (A1), one or more rollers maintaining a tube or a profiled section (6) clamped against the form during bending. The invention is characterized in that it comprises a single assembly (bending-jaw form) capable of being positioned in either of two positions to start the bending operation (P1) and P2), symmetrical relative to the tube axis to allow bending in a bending direction starting from (P1), or reverse bending starting from (P2). The rectilinear movement of the jaw along two directions (ox) and (oy) and its optimum orientation relative to the roller are provided by an eccentric system.

L'invention concerne une tête de cintrage par exemple pour une technique de cintrage par enroulement-tension, du type comportant un ensemble (forme de cintrage-mors) mis en rotation autour d'un axe (A1), un ou des galets maintenant un tube ou un profilé (6) serré contre la forme de cintrage pendant le cintrage, caractérisée en ce qu'elle comporte un ensemble unique (forme de cintrage-mors) pouvant être positionné selon l'une ou l'autre de deux positions de départ de cintrage (P1) et (P2), symétriques par rapport à l'axe du tube de façon à permettre soit à partir de (P1) un cintrage dans un sens de cintrage, soit à partir de (P2) un cintrage en sens inverse. Le déplacement rectiligne du mors selon deux directions (ox) et (oy) et son orientation optimale par rapport au galet sont obtenus par un système à excentrique.

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