JPH0665772B2 - Method and device for manufacturing three-dimensional fabric - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method and an apparatus for producing a three-dimensional woven fabric.

[Prior Art] Conventionally, a three-dimensional woven fabric is generally obtained by weaving fibers in the X, Y, and Z directions, but such a three-dimensional woven fabric is manufactured by using a shuttle, rapier, or the like. When weaving, we need a means for forming ears at the ends of the fabric,
Therefore, the structure of the device is complicated and the weaving process is troublesome.

[Problems to be Solved by the Invention] A technical problem of the present invention is to make it possible to easily weave a three-dimensional fabric without using a special means for forming ears.

[Means for Solving the Problems] In order to solve the above problems, in the method for manufacturing a three-dimensional fabric of the present invention, a large number of longitudinal rods woven in the longitudinal direction of the three-dimensional fabric are held in parallel with the upper end as a free end. Then, by alternately crossing the plurality of weft yarn feeders in the upper part of the warp rod group in the direction intersecting with each other, the weft yarns are woven in the warp yarn group so as to intersect with each other. It is characterized in that the wrapped weft thread group is pressed along the rod.

Further, the three-dimensional fabric manufacturing apparatus of the present invention comprises a holding mechanism for holding a number of vertical rods woven in the longitudinal direction of the three-dimensional fabric in parallel with the upper end as a free end, and the vertical rod group above the vertical rod group. A plurality of weft yarn feeders, which are arranged so as to be able to cross each other alternately on the rod group in the direction intersecting each other, and weave the weft yarns into the warp rod group so as to cross each other, and the weft yarns in a cross pattern between the rods And a repulsion mechanism for pressing the weft thread group inserted along the rod.

[Operation] A large number of vertical rods are held in parallel with the holding mechanism with their upper ends being free ends, and a plurality of weft yarn feeders are alternately crossed over the vertical rod group so that the weft yarn crosses the vertical rod group. As it is woven into a shape, the weft yarns that intersect with the weft yarns are wrapped inside the folded back weft yarns at the ends of the fabric, and the ears are automatically formed. Therefore, no complicated means for making the ear are needed and the formation of the ear is very simple.

Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

The three-dimensional woven fabric manufactured according to the present invention uses a rod formed by binding a plurality of fibers bundled in a matrix, and is woven between a plurality of longitudinal rods arranged in the longitudinal direction of the woven fabric. It is woven by the weft thread.

1 and 2 show an example of an apparatus for producing a three-dimensional fabric using the rod. This device comprises a holding mechanism 10 for holding a large number of rods 1 in parallel in the vertical direction of a three-dimensional fabric, with the upper end being a free end, and a group of vertical rods 1 held on top of each other. The weft threads are arranged so that they can be crossed alternately in the direction of crossing,
Plural weft feeders 11 and 12 for weaving 2, 3 in a crosswise manner with respect to a group of longitudinal rods, and weft 2, 3 groups weaved in a cross between the rods 1 are pressed along the rod 1. Repulsion mechanism 1
It has 3 and.

The holding mechanism 10 for the rod 1 is composed of a pair of upper and lower chuck devices 16a, 16b which can be separately raised and lowered by the rotation of the feed screws 15a, 15b supported by the machine body. These chuck devices 16a, 16b have a large number of through holes 1 through which the rod 1 passes.
The perforated plate 17 provided with 7a is attached to the arm 18, and the slide plate 19 provided with the same through hole 19a is slidably fitted in the slit 17b of the perforated plate 17 so that the slide plate 19 is attached. It is connected to a cylinder 20 arranged on an arm 18, and slides on the perforated plate 17 by slightly shifting the sliding plate 19 with respect to the perforated plate 17 in a direction intersecting with the rod 1. The rod 1 is chucked between it and the plate 19.

The upper chuck device 16a serves not only as a supporting means for supporting the lower end portions of the weft threads 2 and 3 group woven with respect to the vertical rod 1 group, but also as a part of the beating mechanism 13, and accordingly It is necessary to move up and down with respect to the rod 1 when the rod 1 is moved or when the beating is performed. At this time, the two chuck devices 16a and 16b alternately chuck the rod 1 while not chucking it. By moving the chuck device up and down, only the chuck devices 16a and 16b can be moved up and down without moving the rod 1 up and down.

The motor for driving the feed screws 15a, 15b and the guide means for guiding the lifting and lowering of the chuck devices 16a, 16b are not shown.

The weft supply devices 11 and 12 have bobbins 25 and 26 around which wefts 2 and 3 are wound, and thread guides 27 and 28, which are provided in a required number according to the number of the vertical rods 1, on holders 29 and 30. Prepare, bobbin 25,2
The weft yarns 2 and 3 delivered from 6 are woven in a cross manner with respect to the vertical rod 1 group through the yarn guides 27 and 28, so that one weft yarn feeding device 11 crosses the vertical rod 1 group in the X direction. And the other weft yarn feeder 12 is arranged so as to traverse in the Y direction. In this case weft feed device 11,1
The movement of 2 can be performed by any mechanism,
In the illustrated embodiment, the sliders 20a and 30a at the upper ends of the holders 29 and 30 are movably engaged in the guide grooves 31a and 31b provided in the support frame 31 in the X and Y directions, and the sliders 29a and 30a are guided into the guide grooves. Cylinders 32 provided on both sides of the cylinder 32 are reciprocally moved.

A pair of comb-tooth-shaped members 35 and 36, which constitute the repulsion mechanism 13 in cooperation with the upper chuck device 16a, are arranged at the lateral positions of the upper end of the rod 1 group in the machine body so as to face each other. Each of them can be moved back and forth by a cylinder 37, and by moving one of the comb-tooth-shaped members 35 or 36 forward and inserting it between the rods to raise the upper chuck device 16a, weaving with respect to one group of vertical rods. The weft yarns 2 and 3 that have been inserted are strongly pressed between the comb-tooth-shaped member 35 or 36 and the upper chuck device 16a for beating, where the comb-tooth-shaped member 3 is used.
The reason why a pair of 5, 36 are provided so as to face each other is that any one of the comb tooth-shaped members 35, 36 can be selectively used regardless of which side the yarn supply device 11 is moving to. .

In the case of weaving a three-dimensional woven fabric with the manufacturing apparatus having the above-described configuration, the two chuck devices 16 in the holding mechanism 10 with the upper ends of the many vertical rods 1 being free ends.
The bobbins 25, a are held parallel to the a and 16b, and the weft feeders 11 and 12 are alternately crossed over the group of vertical rods 25, as shown in FIGS. 3 (A) to (E). The weft yarns 2 and 3 from 26 are woven in a cross manner with respect to the warp rod group. At this time, at the end of the woven fabric, the weft thread folded back
The weft threads 3 and 2 intersecting with the threads are wrapped inside the threads 2 and 3, thereby automatically forming the ears. Therefore, no complicated means for making the ear are needed and the formation of the ear is very simple.

With the progress of weaving, the two chuck devices 16a and 16b are sequentially lowered by the above-described method, and the beating mechanism 13 is sequentially operated to perform beating. Note that this beating may be performed by lowering the comb-tooth-shaped members 35 and 36.

The device of the first embodiment is for constructing a simple three-dimensional woven fabric having a rectangular cross section, but with a slight modification, it is possible to form a cubic fabric having an irregular cross-sectional shape other than a square. The original fabric can also be manufactured.

FIG. 4 schematically shows an apparatus for producing a three-dimensional fabric having a T-shaped cross section. The apparatus of the second embodiment is configured such that for each region where the cross-sectional shape of the fabric is different, a weft yarn feeder corresponding to that region is independently provided and each feeder can be moved independently. That is, two weft supply devices 41a, 41b are provided in the X direction and three weft supply devices 42a, 42b, 42c are provided in the Y direction, and these supply devices can independently traverse a group of vertical rods. Although this is different from the device of the first embodiment in this point, other configurations are substantially the same as the device of the first embodiment.

In order to weave a three-dimensional woven fabric with the device of the second embodiment, as shown in FIG. 4, a large number of vertical rods 1 are arranged and held in a shape that matches the desired cross-sectional shape of the three-dimensional woven fabric. From the state of being held by the mechanism, as shown in FIGS. 5 (A) and 5 (B), all the weft yarn feeders 41a, 41b in the X direction and all the weft yarn feeders 42a, 42b, 42c in the Y direction are alternately opposite. To the side, and then, as shown in (C) and (D) of the figure, a part of the weft supply devices 41a in the X direction is reversed and a part of the weft supply devices 42a, 42c in the Y direction are reversed. Then, subsequently, the remaining weft yarn feeders 41b and 42b are reversed as shown in FIGS. Thus, by repeating the above operation, a three-dimensional woven fabric having a T-shaped cross section can be woven.

FIG. 6 schematically shows an apparatus for producing a three-dimensional fabric having an H-shaped cross section. The apparatus of the third embodiment is
In the X direction, three weft yarn feeders 51a to 51c are provided, and in the Y direction, three weft yarn feeders 52a to 52c are provided on one side and two weft yarn feeders 52d and 52e are provided on the other side. .

Thus, in the device of the third embodiment, the three-dimensional fabric having an H-shaped cross section can be woven by alternately inverting the weft supply devices in the X and Y directions in a predetermined combination.

[Effects of the Invention] As described above, according to the present invention, a large number of vertical rods are held in parallel with the holding mechanism with their upper ends being free ends, and a plurality of weft yarn feeders are alternately crossed over the vertical rod group. The weft threads are woven in such a manner that they cross each other with respect to the warp rod group, so that the weft threads intersecting with the weft threads are wrapped inside the folded back weft threads at the end of the fabric to automatically form ears. Therefore, it does not require any complicated means for making an ear and the ear is very easy to form.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a first embodiment of a three-dimensional fabric manufacturing apparatus according to the present invention, FIG. 2 is a schematic plan view thereof, and FIG.
Figures (A) to (E) are explanatory views of a method for weaving a three-dimensional fabric using the production apparatus of the first embodiment, and Fig. 4 is a schematic diagram of a second embodiment of the three-dimensional fabric production apparatus. 5A to 5F are explanatory views of a method of weaving a three-dimensional woven fabric using the manufacturing apparatus of the second embodiment, and FIG. 6 is a diagram illustrating the three-dimensional woven fabric manufacturing apparatus. It is a top view which shows 3 Examples typically. 1 ... Rod, 2,3 ... weft thread, 10 ... holding mechanism, 11,12,41a, 41b, 42a to 42c, 51a to 51c, 52a to 52e ... weft thread feeder, 13 ... beating mechanism.

Claims (3)

[Claims] 1. A plurality of longitudinal rods woven in the longitudinal direction of a three-dimensional woven fabric are held in parallel with their upper ends being free ends, and a plurality of weft yarn feeders are oriented in a direction intersecting with each other at the upper portion of the longitudinal rod group. By alternately crossing over the vertical rod group, weft threads are woven in a crosswise manner with respect to the vertical rod group,
A method for producing a three-dimensional woven fabric, which comprises pressing a woven weft yarn group along a rod. 2. A holding mechanism for holding a large number of vertical rods woven in the longitudinal direction of a three-dimensional woven fabric in parallel with the upper end as a free end, and a direction crossing each other on the vertical rod group above the vertical rod group. A plurality of weft yarn feeders that are arranged so that they can be crossed alternately toward each other, and the weft yarns are interwoven in a crosswise manner with respect to the warp rod group, and the weft yarn group that is interwoven between the rods is made into a rod. An apparatus for manufacturing a three-dimensional woven fabric, comprising: a repulsion mechanism that presses along the repulsion mechanism. 3. The apparatus for producing a three-dimensional fabric according to claim 2, wherein a plurality of weft yarn feeders are arranged in the same direction.