Method and device for realizing weft-direction vertical yarn of three-dimensional multilayer profiling woven fabric

Abstract

The invention discloses a method and device for achieving weft-direction vertical yarn of a three-dimensional multilayer profiling woven fabric. The method comprises the steps that a loom opening device opens to form a vertical-yarn-guiding shed; a weft-direction vertical-yarn-guiding device of the loom introduces super-amplitude yarns into the vertical-yarn-guiding shed; heald levelling is conducted by the loom opening device, the yarns are turned, the yarns are supplied to two sides of a cloth fell, and pre-beating-up is conducted by a beating-up device; the loom opening device opens to form a vertical-yarn-pulling shed; the yarn continues to be bent and stretched in the fabric thickness direction, and meanwhile the yarn is supplied to the two sides of the cloth fell; heald levelling is conducted by the loom opening device, and beating-up is conducted by the beating-up device normally; and the yarns are cut off if shuttle-less vertical-yarn-guiding is adopted, and one-shuttle vertical yarn guiding is completed if shuttle type vertical-yarn-guiding is adopted, so that the weft-direction vertical yarns continuously penetrating through the thickness of the fabric layer are formed. Therefore, the purpose of increasing third-dimension reinforced fiber distribution in the three-dimensional multi-layer profiling woven fabric is achieved, fiber tightening and compression in the thickness direction of the multi-layer fabric are achieved, and the compactness and profiling precision of the three-dimensional woven fabric and the fiber volume content of the preform are improved.

Description

technical field [0001] The invention belongs to the field of textile machinery, and relates to a process and a device for realizing a three-dimensional multi-layer profiling woven fabric in a high-performance fiber composite material, in particular to a method and a device for realizing weft vertical yarns of a three-dimensional multi-layer profiling woven fabric. Background technique [0002] In recent years, in the field of composite materials, the scheme of using three-dimensional woven preforms made of high-performance fibers as composite material reinforcements has been more applied. Compared with lay-up, winding, weaving and other solutions, three-dimensional woven has the advantages of overall forming, overall force, no delamination, and better mechanical properties. However, three-dimensional weaving is difficult to manufacture, especially for the vertical yarns, that is, the third-dimensional yarns perpendicular to the warp and weft planes, which require low-cost an...

AI Technical Summary

Problems solved by technology

However, three-dimensional weaving is difficult to manufacture, especially the vertical yarn, that is, the third dimension yarn perpendicular to the warp and weft plane, requires a low-cost and high-efficiency weaving method

[0003] The current three-dimensional multi-layer woven fabrics are mostly 2.5D fabrics, that is, the connection between layers is realized by multi-layer corner interlocking. Because there is no weaving of vertical yarns, it is not a real 3D fabric.

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