Upper shedding mechanism of two-warp twist leno fabric without fixed twist group and drafting method

Abstract

The invention provides an upper shedding mechanism of a two-warp twist leno fabric without a fixed twist group and a drafting method. The upper shedding mechanism is viewed from the front to the back of a machine, and the heald frame sequence is a half heald A, a half heald B, a rear heald C and a ground heald D, wherein the half heald A, the half heald B, the rear heald C and the ground heald D are all of an upper shedding mechanism; according to the drafting method, warps are sequentially arranged at intervals in a group of twisted warps SX and a group of ground warps GX, and the twisted warps SX firstly penetrate through the ground heald D in an empty manner, then penetrate into a heddle eye of the rear heald C, then penetrate into a half heald loop of the half heald B, finally penetrate into a half heald loop of the half heald A and then are pulled to the front of the machine; the ground warps GX firstly penetrate into a heddle eye of the ground heald D, then penetrate through the rear heald C in an empty manner, and then penetrate through the right side of the right adjacent half heald loop of the half heald loop penetrated by the half heald B in an empty manner of the twisted warps; and finally, the ground warps GX penetrate through the left side of a half heald loop which is penetrated by the half heald A of the twisted warps, and then are pulled to the front of the machine. By adopting the shedding mechanism and the drafting method, the two-warp twist leno fabric without the fixed twist group can be woven.

Description

technical field [0001] The invention relates to the field of fabric weaving, in particular to an upper shedding mechanism and a drawing-in method for a two-warp hank leno fabric without a fixed twist group. Background technique [0002] All skein fabrics include two warp systems, the ground warp and the skein warp, when weaving. Currently, the common fixed skein two-warp skein leno fabrics known on the market are as follows: figure 1 As shown, three heald frames are needed to weave the fabric, including one twisted heald and two flat healds. When weaving, the ground warp and the twisted warp are twisted only in one fixed twist group, and there is no interweaving relationship between the warp threads of the twisted group and the twisted group, so the two-warp twisted leno fabric is easy to slip in the lateral direction, causing Fabric deformation can not be used. [0003] The loom of the two warp hank leno fabrics without fixed twist group needs four heald frames in total, ...

AI Technical Summary

Problems solved by technology

When weaving, the ground warp and the twisted warp are twisted only in one fixed twist group, and there is no interweaving relationship between the twisted group and the warp of the twisted group, so the two-warp twisted leno fabric is easy to slip in the lateral direction, causing The fabric is deformed and cannot be used

Images