Device and method for forming a woven object with off-axis...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 70/24 (2006.01) B29C 70/32 (2006.01) D03D 25/00 (2006.01) D06C 5/00 (2006.01)

Patent

CA 2588378

A device for obtaining off-axis reinforcement of a woven object (10) is made up of a fixed mandrel (20) and a rotating mandrel (22). The rotating mandrel (22) is connected to the fixed mandrel (20) by shaft that rotates through the middle of the fixed mandrel (22). The shaft allows the rotating mandrel (22) to move up and down in relation to the fixed mandrel (20). A portion of the woven object (10) can be clamped to the fixed mandrel (20) while a second portion of the woven object (10) can be clamped to the rotating mandrel (22). When rotated, the rotating mandrel (22) causes the warp fibers (12) in the woven object (l0) to twist off the 0 ~ direction while fill or hoop fibers (14) remain substantially parallel to the 90 ~ direction.

L'invention concerne un dispositif pour produire un renforcement hors axe sur un objet tissé (10). Ce dispositif est constitué d'un mandrin fixe (20) et d'un mandrin rotatif (22). Le mandrin rotatif (22) est relié au mandrin fixe (20) par un arbre qui tourne à travers le centre du mandrin fixe (20). L'arbre permet au mandrin rotatif (22) d'effectuer un mouvement ascendant et descendant par rapport au mandrin fixe (20). Une partie de l'objet tissé (10) peut être fixée sur le mandrin fixe (20), tandis qu'une deuxième partie de l'objet tissée (10) peut être fixée sur le mandrin rotatif (22). Lorsqu'il effectue un mouvement de rotation, le mandrin rotatif (22) induit une torsion des fibres de chaîne (12) dans l'objet tissé (10), de sorte qu'elles dévient de la direction 0°, tandis que les fibres de remplissage ou les fibres en cercle (4) restent sensiblement parallèles à la direction 90°.

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