B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/00 (2006.01) B29C 70/44 (2006.01) B32B 7/08 (2006.01) B32B 7/12 (2006.01)
Patent
CA 2461440
A method of forming a unitary, composite structural member, and a member formed in accordance with the process. The process involves stitching a plurality of warp knit panel sections together to generally form a plurality of independent panel sections. The sections are placed within the dies of a molding tool such that a rib portion of each section aligns. Inflatable bladders are then slipped into voids formed in between the various panel sections of the assembly. The bladders are inflated to hold the panel sections in the shape of the final product and to hold the rib portions in contact with one another. Resin is then infused into the panels that make up the assembly. The assembly is then cured. When the panels are removed from the molding tool a unitary, complexly shaped, composite structural member is formed. The invention provides the advantage of not requiring any subsequent manufacturing step such as bonding or mechanical fastening of two or more sub-panels in order to form the finished structural part.
La présente description porte sur une méthode permettant de former un élément de structure composite monobloc et sur un élément formé conformément au processus. Le processus concerne l'assemblage par piqûre de plusieurs sections de panneau à mailles jetées ensemble pour former plusieurs sections de panneau indépendantes. Les sections sont placées dans les matrices d'un outil de moulage en veillant à ce que la partie nervurée de chaque section soit alignée. Des vessies gonflables sont ensuite glissées dans les vides formés entre les diverses sections de panneau de l'assemblage. Les vessies sont gonflées dans le but de donner aux sections de panneau la forme du produit final et de maintenir les parties nervurées en contact les unes avec les autres. De la résine est ensuite infusée dans les panneaux qui constituent l'assemblage. L'assemblage est alors cuit. Lorsque les panneaux sont retirés de l'outil de moulage, un élément de structure composite monobloc de forme complexe est formé. L'invention permet de passer outre des étapes de fabrication subséquentes telles que le collage ou la fixation mécanique de deux sous-panneaux ou plus dans le but de former la partie structurale définitive.
Burgess Roger Alan
Standish Cole
Thrash Patrick Joseph
Velicki Alexander
Sim & Mcburney
The Boeing Company
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