EP 0922798 B1 20020605 - Weaving device for making a structure for a composite article
Title (en)
Weaving device for making a structure for a composite article
Title (de)
Webvorrichtung zur Herstellung einer Struktur für Verbundmaterial
Title (fr)
Dispositif de tissage pour la réalisation d'une structure pour pièce de matière composite
Publication
Application
Priority
FR 9715608 A 19971210
Abstract (en)
[origin: EP0922798A1] The composite fabric weaving has a longitudinal cam to move the warps, and a structured weft insertion system. The assembly for weaving a composite material has a system (5) to give different displacement movement speeds to the warps (FC) which rotates round a longitudinal axis (X-X). Its profile is set as a function of at least one lateral edge of the woven material, in a cam shape. The cam (5) has a flat surface and a profile which is defined by a variable lateral width, at right angles to the axis (X-X), where the axis is generally orthogonal to the direction (D) of the warps (FC). The cam profile is defined so that the lateral width (hi) is at a point (Pi) along the axis (X-X) to meet the equation: Li= n(Pj)+F1(hi,θ 2) - F2(hi,θ 1) where: Li is the required length of the warp in the woven fabric at the point (Pi) on the longitudinal axis (X-X); n is the number of wefts in the fabric; n Pj is the displacement of the warps in each step; F1 and F2 are the distance functions of the lateral width (hi) and the extreme rotation angles (θ 1, θ 2) of the cam. The weft insertion system gives a variable number of superimposed wefts of different weft thicknesses. The length of warp displacement, with longitudinal displacement by steps for the insertion of the wefts, is set for each step.
IPC 1-7
IPC 8 full level
D03D 13/00 (2006.01)
CPC (source: EP US)
D03D 3/06 (2013.01 - EP US); D03D 13/00 (2013.01 - EP US); D03D 49/20 (2013.01 - EP)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0922798 A1 19990616; EP 0922798 B1 20020605; DE 69805740 D1 20020711; DE 69805740 T2 20030424; FR 2772052 A1 19990611; FR 2772052 B1 20000204; US 6003564 A 19991221
DOCDB simple family (application)
EP 98402990 A 19981130; DE 69805740 T 19981130; FR 9715608 A 19971210; US 20450198 A 19981204