Weaving loom with side-by-side frames, weaving method using such a loom and preforms woven thereby

Abstract

The weaving loom of the present disclosure includes a warp thread supply system, a frame type warp thread sequencing system, a reed and a weft thread insertion system. The present disclosure also provides a weaving method using the weaving loom. The method includes: a step of designing a flat fabric which are multilayered and presenting several adjacent sections in a weft direction whose weave and layout are different; a step of designing a set of side-by-side frames for enabling a weaving of the adjacent sections in a continuity of a weft according to designed weaves and layouts; and a step of carrying out the weaving.

What is claimed is: 
     
         1 . A weaving loom of a kind comprising a wrap yarns supply system, a wrap yarns sequencing system with frames, a beating reed and a weft yarn insertion system, wherein the wrap yarns sequencing system comprises means for driving side-by-side frames. 
     
     
         2 . The weaving loom according to  claim 1 , wherein the wrap yarns sequencing system comprises parallel sliders in which profiled edges are engaged facing vertical uprights of facing frames. 
     
     
         3 . The weaving loom according to  claim 1 , further comprising lines of side-by-side frames, each line of frames in one row being assigned to a weaving of one section of a fabric according to a determined weave and/or layout by using at least partially a continuity of a weft between various sections of the fabric. 
     
     
         4 . The weaving loom according to  claim 1 , wherein the wrap yarns sequencing system comprises a motorization which is independent, over time and in amplitude, from a movement of the side-by-side frames. 
     
     
         5 . The weaving loom according to  claim 1 , wherein the weaving loom comprises means for realizing singularities in at least one of woven areas in connection with a line of frames provided for a weaving of said at least one woven area which includes a weft insertion system. 
     
     
         6 . The weaving loom according to  claim 5 , wherein the weft insertion system is of a shuttle type adapted to a layout of a concerned weaving area. 
     
     
         7 . A weaving method using a weaving loom according to  claim 1 , said method comprising:
 a step of designing a flat fabric which are multilayered and presenting several adjacent sections in a weft direction whose weave and layout are different;   a step of designing a set of side-by-side frames for enabling a weaving of the adjacent sections in a continuity of a weft according to designed weaves and layouts; and   a step of carrying out the weaving.   
     
     
         8 . The method according to  claim 7 , wherein the step of designing each fabric section produces data defining a weave and a layout thereof used in a subsequent step of designing a line of frames associated to said fabric section as well as their different vertical movements which are independent over time and in amplitude. 
     
     
         9 . A preform woven according to the method of  claim 7 , comprising several adjacent areas in the weft direction presenting different weaves and/or layouts and which are made in one single piece. 
     
     
         10 . The preform woven according to  claim 9 , wherein the preform is used for making in a composite material, a beam of a thrust reverser for a turbojet engine nacelle, or composite parts. 
     
     
         11 . The preform woven according to  claim 9 , wherein the composite parts are sheets, beams, guide or carrying rails.