Method and apparatus for injection blow molding an...

B - Operations – Transporting – 29 – C

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B29C 49/06 (2006.01) B29C 49/48 (2006.01)

Patent

CA 2329041

A method and mold (10) for man-ufacturing a vehicle component such as a bumper beam (52) or body panel (62). The component is manufactured by: 1) injecting molten material into a parison cavity of a mold (10) to form a parison (40), wherein the mold has at least two sections (14, 18) that are moveable be-tween a first position defining the parison cavity and an expanded second position defining predetermined blow cavities; 2) retracting the at least two sections (14, 18) to the expanded second position, and 3) injecting a gas into the parison (40) to expand the parison (40) to form blown part (44).

L'invention concerne un procédé et un moule (10) de fabrication d'un composant de véhicule, tel qu'une poutre de pare-chocs (52) ou un panneau de carrosserie (62). Le procédé de fabrication de ce composant comprend les étapes consistant: 1) à injecter une matière en fusion dans une cavité de paraison d'un moule (10), afin de former une paraison (40), le moule présentant au moins deux sections (14, 18) mobiles entre une première position délimitant la cavité de la paraison et une seconde position, déployée, délimitant deux cavités de soufflage, déterminées; 2) à tirer vers l'arrière au moins les deux sections (14, 18) pour les mettre dans la seconde position, déployée, et 3) à injecter un gaz dans la paraison (40), afin d'expanser celle-ci et former une pièce soufflée (44).

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