JPS6385138A - Thrdd-dimensional loom - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Field of Application) This invention relates to a warp yarn group in which a large number of warp yarns are stretched in multiple rows and multiple columns, and between each row and each column, weft yarns and vertical threads are connected as warp yarns. This relates to a three-dimensional loom that weaves orthogonally.

(Prior art) Three-dimensional fabrics woven with three-component threads: warp, weft, and vertical threads can be used as shock absorbers and filters in their woven form, and they can also be used as shock absorbers and filters using resin or inorganic materials as a matrix. Fiber-reinforced composite materials are used as base materials for fiber-reinforced composite materials, which exhibit composite effects steeped in mechanical and thermal properties, so they are used as structural materials and soundproofing materials for aircraft, automobile parts, bridges, rockets, etc. It is expected to have a wide range of applications.

As a conventional three-dimensional loom, Japanese Patent Publication No. 57-17990 discloses an apparatus shown in FIG. 9.

In this device, a screw shaft 33 that is driven to rotate synchronously by a motor 32 is vertically disposed on the top of a machine frame 31.
A mounting frame 35 for a warp support plate 34, which is provided with a large number of thread mounting holes (not provided orally) through which a large number of warp threads 2 are suspended, is mounted on the thread support plate 3 through a nut portion 35a. A heald 37 in which thread insertion holes 36 are formed at equal intervals in order to regulate the rows and columns of the warp threads 2 is disposed at an intermediate position of the machine frame 31, and a heald 37 is provided at a predetermined position between the heald 37 and the warp support plate 34. A weaving frame 38 is disposed on the woven fabric frame 38.

(Problems to be Solved by the Invention) In the conventional device, since the warp support plate 34 and the weaving frame 38 are arranged with their centers fixed, it is difficult to change the number of warp rows and columns. causing inconvenience. In other words, in the conventional apparatus, in order to match the center of the three-dimensional fabric ~① woven with the center of the warp group even when the number of warp threads is changed, it is necessary to adjust the heddles as shown in Fig. 10(a). It is necessary to pass the warp threads 2 through the thread insertion holes 36 so that the center of the warp threads 37 becomes the center of the warp group and the three-dimensional fabric W. However, when the warp yarns are arranged in this manner, it is necessary to move the selvage forming device to the vicinity of the rows and columns of the warp group, making the structure of the device complicated. In addition, in order to change the number of warp threads while the selvage forming device is placed in a predetermined position, please refer to Fig. 10 (b).
As shown in , it is necessary to tension the warp threads with one end of the row and column of the warp thread group aligned. However, when the warp yarns are stretched in this manner, the center 01 of the warp group and the center 02 of the three-dimensional fabric W, that is, the center 02 of the warp support plate 34, are shifted, which causes the disadvantage that the fabric bends and loses its shape. When the warp threads are fixed in the thread attachment holes (not shown) formed in the warp support plate 34 as in the conventional device, if the center deviation is small, the distortion of the fabric shape can be almost ignored; There is a disadvantage that it is troublesome to pass the warp threads through each thread attachment hole.

For this reason, it is conceivable to hold one end of the warp yarn 2 by bending it and hooking it on the hook 39, as shown in FIG. 11, but in this case, the center of the warp yarn 2 shifts from the center of the group of warp yarns, causing the fabric shape to collapse. This phenomenon becomes noticeable.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a fixing member that fixes and holds one end of a group of warp threads in order to tension a large number of warp threads in multiple rows and multiple columns. and a front frame for setting the outer shape of the three-dimensional fabric are arranged so that their center positions can be moved and adjusted in response to changes in the number of rows and columns of warp groups.

(Function) In the device of the present invention, when a large number of warp yarns are stretched in multiple rows and columns, the center position of the fixing member that holds one end of the warp yarns in a fixed manner changes in response to changes in the number of rows and columns of the warp group. The movement is adjusted so that it coincides with the center position, and the front frame is similarly moved and adjusted so that its center coincides with the center position of the warp group.

Therefore, even if the number of warp threads is changed while one end of the row and column of the warp thread group is fixed at a predetermined position, the center positions of the fixing member, the front frame, and the warp thread group can be aligned, and the selvage forming device can be adjusted. It is possible to weave the three-dimensional fabric without complicating the structure or destroying the shape of the three-dimensional fabric.

(Example) Next, an example embodying the present invention will be described with reference to FIGS. 1 to 8. A pair of guide columns 2 are erected on the upper part of the machine frame 1, and a support plate 3 is supported on the guide columns 2 so as to be movable up and down in a horizontal state.

The support plate 3 has a bracket 3 protruding from its upper end.
One end of the chain 5 is fixed to a winding drum (not shown) which is driven to rotate in forward and reverse directions, and the other end of the chain 5 is guided through a sprocket 4 disposed above the machine frame 1. A fixing member 6 is attached to fix and hold one end of the warp group.

Then, the support plate 3 is rotated forward and backward by the winding drum.
At the same time, the fixing member 6 is moved up and down.

Below the support plate 3, there is a known weaving section 7 in which a large number of warps are stretched in multiple rows and columns, and the wefts and vertical systems are woven in a state perpendicular to the warps between each row and each column.
is installed. A support base 8 is disposed horizontally above the weaving section 7, and a weaving frame 9 for setting the outer shape of the three-dimensional fabric W is attached to the support base 8.

A pair of warp bobbins 10 for supplying warp threads 1 are arranged on both sides of the lower part of the machine frame 1 so as to be actively rotatable in response to the weaving operation. A tension detection roller 1 is placed above the warp bobbin 10.
1 is disposed parallel to the warp bobbin 10, and a guide roller 12 is disposed parallel to the tension detecting roller 11 at an intermediate portion between both tension detecting rollers 11. As shown in FIG. 5, a long hole 13a is formed in the support bracket 13 that supports both guide rollers 12, and a bearing member 14 that rotatably supports the shaft 12a of the guide roller 12 is inserted along the hole 13a. It is slidably supported and fastened by bolts 14a.

As shown in FIG. 2.3, the weave frame 9 has a mounting plate 15 movably fixed to the support base 8 and a guide hole 16a for setting the outer shape of the three-dimensional fabric W formed in the center.
7, and a weaving frame main body 16 detachably fixed to the mounting plate 15. A through hole 8a is formed in the center of the support base 8, and four elongated holes 8 are formed so as to be located on a straight line that passes through the center of the through hole 8a and is orthogonal to each other.
b is formed. The mounting plate 15 has a through hole 1 in its center.
5a is formed, and the supporting base 8 is formed around it.
Four long holes 15b are formed that are perpendicular to the long holes 8b. And the long hole 8b, 1! l) The mounting plate 15 is attached to the support base 8 by the square root bolt 18 and nut 19 passing through b.
It is fixed so that its movement can be adjusted.

As shown in FIG. 4, a long hole 3b is formed in the support plate 3 so as to be located on a straight line that passes through its center and is orthogonal to each other. The long hole 3b is formed individually.

The fixing member 6 is movably fixed to the support plate 3 by a square root bolt 20 and a nut 21 passing through the fixing member 6a.

Next, the operation of the apparatus configured as described above will be explained. In FIG. 7, the warp yarns 2 constituting a warp group in multiple rows and columns are let out from the warp bobbin 10, and the tension detection roller 1
1 and guide rollers 12 to the weaving section 7, and after being inserted through the warp guide 22 provided in the weaving section 7, it is fixed to the fixing member 6 via the front frame 9. Then, weaving is started with the fixing member 6 placed at the lowest position together with the support plate 3, and the weft and vertical threads are moved between the rows and columns of the warp threads 2 by a known shuttle method, rapier method, etc. in the weaving section 7. As it is inserted, ears are formed by the forming device. Then, the warp yarns 2 are squeezed by the balance between the weft and vertical yarn tensions and the warp yarn tensions, or by the beating action of a reed or the like, to form a three-dimensional fabric W. As the three-dimensional fabric is formed, the fixing member 6 is attached to the support plate 3.
At the same time, it is pulled up by the chain 5. The tension of the warp threads l supplied to the weaving section 7 is measured by a tension detection roller 11 so that the tension always remains at a predetermined level.

FIG. 7 is a front view showing a state in which a three-dimensional fabric W is produced using the maximum number of warp threads 2. In this state, the fixing member 6 and the weave frame 9 are arranged such that their centers coincide with the center of the warp guide section, and the centers of both guide rollers 12 are also located on the center line of the warp guide section. From this state, when the number of warp yarns 2 used is decreased as shown in FIG. 8(a), the center of the warp group, that is, the three-dimensional fabric W
The center changes from the position indicated by O- at the time of the maximum number of lines to the position indicated by 02 in FIG. 8(a). In this device, in response to changes in the center position of the three-dimensional fabric, the center positions of the fixing member 6 and the front frame 9 are adjusted to match the center position of the three-dimensional fabric, and the center position of the guide roller 12 is also adjusted. The movement is adjusted to match the center. Orimae frame 9
To move the center of the mounting plate 15, the fixed position of the mounting plate 15 relative to the support base 8 is changed. To change the fixing position of the mounting plate 15, the nut 19 is loosened, and in that state, the mounting plate 15 is first moved a predetermined distance in the horizontal direction, then moved a predetermined distance in the vertical direction, and the nut 19 is tightened. As a result, the center of the attachment 1fi15, that is, the center of the front frame 9, coincides with the center of the fabric. Similarly, the fixing member 6 is moved by a predetermined distance in the horizontal and vertical directions with the nut 21 loosened, and by tightening the nut 21, the center position of the fixing member 6 can be easily aligned with the center of the fabric.

In addition, the guide roller 12 is also moved so that the center of the roller or the device coincides with the center of the woven fabric, but in this case, the center of both is not simply moved so that the center of the device coincides with the center of the woven fabric. Determine its fixed position. That is, since both guide rollers 12 each guide half of the warp threads 2 used, for example, when the maximum number of warp threads Z is used, both guide rollers 12 each guide half of the warp threads 2 as shown in FIG. The shaft 12a is arranged so as to coincide with the center position of one half of the warp group, and in the J1 case where the number of warps is reduced, it corresponds to the center of the reduced one half of the warp group as shown in Fig. 6(b). The fixed position of the bearing member 14 is moved along the elongated hole 13a of the support bracket 13 so that the axis of the guide roller 12 coincides with each position.

The size of the guide hole 16a formed in the front frame body 16 changes in proportion to the number of warp threads when the drawing ratio of the warp threads 2 is kept constant, but if the fabric dimensions are not changed, the number of warp threads used will change. Even if the size of the guide hole 16a is changed, there is no need to change the size of the guide hole 16a. However, even if the size of the guide hole 16a is not changed, if the number of warp threads to be used is changed, as shown in Fig. 8(b).
As shown in , the mechanism changes the center position of the fabric.

It is necessary to move and adjust the fixing positions of the fixing member 6, the loom frame 9, and the guide roller 12.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, instead of supplying the warp threads from the warp bobbin 10, a weight may be attached to one end of the warp threads and the warp threads may be hung down, or the warp threads may be fed vertically. Instead of being stretched, it may be replaced with a configuration in which it is stretched in the horizontal direction.

Effects of the Invention As detailed above, according to the present invention, when changing the number of warp threads to be used, the front frame and the warp fixing member are arranged so that their centers are aligned with the center of the warp of the woven portion and the center of the woven fabric. Since the position of the selvage forming device is fixed, even if the number of warp threads is changed based on one end of the warp row or column, the center of the fabric, the center of the front and the warp fixing member 1. This provides an excellent effect in that a three-dimensional fabric can be woven without losing the shape of the end piece.

[Brief explanation of the drawing]

1 to 8 show an embodiment embodying the present invention, in which FIG. 1 is a schematic front view, FIG. 2 is a bottom view of the woven frame, and FIG. 3 is A of FIG. 2. - A sectional view, FIG. 4 is a plan view of the fixing member, FIG. 5 is a perspective view of the guide roller, and FIG.
a) and (b) are schematic plan views showing the relationship between the woven part and the guide rollers, FIG. 7 is a schematic front view of the state in which the maximum number of warp threads is used, and FIGS. A schematic diagram showing the relationship between the warp threads and the guide holes of the front frame, FIG. 9 is a schematic front view of the conventional device, and FIGS. 10 (a) and (b) are schematic diagrams showing the relationship between the warp positions and the warp support plate. 11 are front views showing the warp holding state. Fixed member 6, woven part 7, woven frame 9, guide roller 12,
Tori (4 plates 15, woven frame body 16, warp l, three-dimensional fabric W
0) Applicant Kozo Iizuka, Director General, Agency of Industrial Science and Technology, Ministry of International Trade and Industry Toyota Industries, Ltd. Designated Agent Futoshi Nagaoka, Institute of Textile and Polymer Materials, Agency of Industrial Science and Technology
Satoshi Akiyo Patent Attorney On 1) Fusen Figure 2 Figure 3 Figure 7 Firefly No drawings

Claims (1)

[Claims] 1. In a three-dimensional loom in which a large number of warp threads are stretched in multiple rows and rows, one end of the warp thread group is held fixed in a three-dimensional loom that weaves weft threads and perpendicular threads between each row and each column in a state perpendicular to the warp threads. A three-dimensional loom, in which a fixing member for setting the outer shape of the three-dimensional fabric and a front frame for setting the outer shape of the three-dimensional fabric are arranged so that their center positions can be adjusted in response to changes in the number of rows and columns of warp groups.