JPH02112436A - Three-dimensional fabric - Google Patents

Abstract

PURPOSE:To obtain the title fabric with increased mechanical strength by alternately intersecting a pair of split yarns arranged parallel with tension differing magnitude with the resultant openings arranged continuously and by inserting both weft and warp into these openings and holding said weft and warp with said pair of split yarns in a sandwiched fashion. CONSTITUTION:A vertical yarn Z made up of a pair of split yarns Z1 and Z2 arranged parallel with tension differing in magnitude is alternately intersected with the resultant openings arranged continuously, and both weft X and warp Y such as of carbon fiber or aramid fiber are successively inserted into the above openings and held said pair of split yarns in a sandwiched fashion, thus obtaining the objective three-dimensional fabric in which waves of said weft and warp to alternately be developed vertically have been suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a three-dimensional fabric organized by three-component yarns of vertical, weft and warp yarns.

[Conventional technology]

Conventionally, this kind of three-dimensional fabric
No. 2 is known.

This three-dimensional fabric is structured in a meandering manner by displacing the weft and warp yarns from side to side in a vertical system arranged in the required number of rows and columns.

In this structure, the spacing between each ternary thread is large, and the density is low.
In Norano, the weft and warp are less constrained by the vertical system, the weft and warp tend to move vertically, the vertical arrangement gaps tend to be irregular, and the mechanical strength in the azure and warp directions is poor. It may be uniform.

For this reason, as shown in FIG. 17, each of the above-mentioned vertical systems Z is constituted by a pair of divided threads Z1.Z, and the pair of divided threads Z, .2. It has been proposed that the weft yarns X and warp yarns Y are inserted into the openings between the divided yarns Z, . ing.

In weaving this proposed structure, for example, as shown in Figs. 8 to 16, a vertical system Z, in this case a vertical system Z consisting of a pair of split threads Z, . The divided threads Z are arranged in the required number of rows and columns and suspended as qQ threads Z, 2. Attach a weight 3 to the lower end of each of the healds and apply tension to align them.
．． A pair of split threads Z, Z! Each hli-
If the healds 4 and 5 are moved in opposite directions in the state shown in Fig. 11, an opening will be formed between the pair of split threads Z+''Z* as shown in Fig. 12. In this case, weft X and warp Y from the direction of the arrow, which is the direction of 45 degrees.
are sequentially folded and inserted vertically using an insertion mechanism (not shown), the ends of each folded loop are entwined with the selvage thread W, and then the motor 6
The screw shaft 7 is rotated, and the support plate 2 is moved north by the vertical arrangement interval of the weft X and warp Y by the screwing action with the mounting frame 8, and then both healds 4 and 5 are crossed in the opposite direction. When the opening is moved, the pair of split threads 2 and 2 pass through the state shown in Fig. 13 and as shown in Fig.
Since an opening is formed between 22 and 22, the weft X and warp Y are sequentially folded up and down vertically from the direction of the arrow as shown in FIG. A three-dimensional fabric having a texture as shown in FIG. 17 in which the state shown in FIG. 16 is turned upside down and green is obtained.

The six threads are made of, for example, carbon fiber, aramid fiber, glass fiber (t), a bundle of synthetic fibers (cement is used as a matrix), gypsum, various resins, or the like.

[Problem to be solved by the invention]

However, in the case of the above-mentioned conventional structure 1, since the weft and warp are sandwiched between a pair of split yarns, it is possible to suppress the shear movement of the weft X and warp Y in the vertical direction, and prevent disturbance of the vertical arrangement 1F. However, during weaving, the above-mentioned pair of split threads Z I' Z z are all drawn together with the same tension, and this pair of split threads Z r ' Z is inserted into the opening between the weft X and warp When threads Y are inserted and weaved sequentially, the amounts of movement of the weft X and warp Y by the split threads Z, .Z become alternately different when the split threads Z, . or split thread Z,・2. Since the position of is fixed, waviness occurs in the weft X and warp Y alternately in the vertical direction. For example, in the state shown in Fig. 13, the waviness Xa occurs only in the roving X, and in the state shown in Fig. 16, the waviness occurs only in the warp Y. This alternating undulation of Xa and Ya causes the disadvantage that the mechanical strength of the entire fabric is reduced.

[Means to solve the problem]

The present invention aims to solve these inconveniences, and its gist is that the system is organized by a vertical system arranged in the required number of rows and columns, wefts and warps inserted between the rows and columns. In a three-dimensional fabric, each of the above vertical systems is created by a pair of split threads (I'4) that are pulled together with different tensions during weaving, and is created by alternately moving the pair of split threads to cross each other. The three-dimensional fabric is characterized in that the weft and warp yarns are inserted into openings between a pair of divided yarns, and the warp yarns are sandwiched between the pair of divided yarns and woven.

[Effect]

When each pair of split threads are alternately crossed, and the weft and warp threads are sequentially inserted into the openings between the split threads to weave, the split threads that are pulled together under weak tension are pulled together under strong tension. The position of one dividing yarn and weft,
The warp yarns move easily depending on their positions, and the weft and warp yarns are prevented from wavily occurring alternately in the vertical direction due to the shedding movement of the pair of divided yarns that alternately intersect with each other.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and the same reference numerals are attached to the deaf-like parts as those in FIGS. 8 to 17. In this case, one divided yarn z1 is connected to the other divided yarn Z.
A yarn bundle with a larger number of fibers than , is used, and each divided yarn Z, ・Z.

The weights 3 attached to the lower ends of the weights 3 are made different so that the tension of one divided thread Z is greater than the tension of the other divided thread Z2, and the weights 3 are suspended from the support plate 2, and weaving is carried out in this state. I try to do it.

This is done as shown in Figures 2 to 7 in the same way as above.
In other words, when both healds 4 and 5 are moved in opposite directions in the state shown in Fig. 2, an opening is formed between the pair of split threads Z1 and 22 as shown in Fig. 3, and the lever opening opens in the direction of the arrow. From 19th thread
・Raise Z by the vertical alignment interval, then raise both healds 4
・If 5 is moved in the opposite direction to the cross opening, the fusei in Fig. 4 becomes <
As shown in Figure 5, there is an opening between the pair of split threads Z1 and 28.
is formed, so insert the threads X and warp Y into this opening sequentially upward and downward from the direction of the arrow as shown in Fig. 6, and by repeating the above operation, the states shown in Figs. 4 and 7 can be changed vertically. A three-dimensional fabric is obtained by repeating the structure shown in FIG. 1 (f).

Since this example has the above structure, the 4th r.
gJ, the divided threads Z, which are pulled together with a weak tension as shown in Fig. 7, move in the vertical direction according to the position of the divided thread Z1, which is pulled together with a strong tension, and the positions of the 0 threads X and the warp threads Y. The undulations Xa-Ya of the weft X and warp Y that alternately occur can be suppressed, and the mechanical strength of the fabric can be improved accordingly.

In addition, although the number of fibers of the split threads Z and Z in the above implementation differs, the same number of bundled threads may be used, and tension may be applied by a tension applying mechanism other than the weight 3. be.

Further, in the above embodiment ρj, the vertical system 2 is vertically suspended for weaving, but the vertical system Z may be arranged horizontally for weaving.

Further, in the above embodiment, the weft and warp threads are folded back and inserted one by one northward, but the number and insertion direction of the zero threads and warp threads may be changed as appropriate.

〔Effect of the invention〕

As described above, in the present invention, the divided yarns that are pulled together by a weak J force are easily moved depending on the position of the divided yarns that are pulled together by a strong tension, and the positions of the weft and warp yarns, so that the divided yarns are moved in the vertical direction. The alternating waviness of the weft and warp yarns can be suppressed, and the mechanical strength of the fabric can be improved accordingly.

As described above, the intended purpose can be fully achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a partial perspective view thereof, FIGS. 2 to 7 are partial cross-sectional views sequentially showing the weaving process, and FIG. 8 is a partial perspective view of the weaving process. Explanatory drawings, Fig. 9 is a plan view of the heald, Fig. 10 is a partial perspective view thereof, and Fig. 1
1 to 16 are partial plan views sequentially showing the weaving process of the conventional structure, and FIG. 17 is a partial perspective view of the conventional structure. X...weft, Y...warp, Z...vertical system, Zt,
Zt...divided thread. 713 country October 17, 1988

Claims (1)

[Claims] In a three-dimensional fabric organized by vertical systems arranged in the required number of rows and columns, wefts and warps inserted between the rows and columns, each of the vertical systems is pulled with different tensions during weaving. Composed of a pair of divided threads that can be aligned,
The weft and warp threads are inserted into the openings between the pair of split threads that are created by alternately moving the pair of split threads to intersect each other, and the weft and warp threads are held between the pair of split threads for weaving. three-dimensional textile.