JPH0814056B2 - Three-dimensional loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a weft yarn and a vertical yarn as warp yarns between each row and each column of a warp group stretched in a plurality of rows and a plurality of columns. The present invention relates to a three-dimensional loom that is woven in a state of being orthogonal to each other.

(Prior Art) A three-dimensional woven fabric woven from three-component yarns of warp, weft, and vertical yarn is used as a shock absorber or a filter in a woven state, and a resin or an inorganic substance is used as a matrix. Used as a base material for fiber-reinforced composite materials, especially because fiber-reinforced composite materials exhibit excellent composite effects in mechanical and thermal properties, structural materials such as aircraft, automobile parts, bridges, rockets, etc. and soundproofing materials. Is expected to have a wide range of uses.

As a conventional three-dimensional loom, Japanese Patent Publication No. 57-17990 discloses a device shown in FIG. Machine frame in this device
A screw shaft 33 that is driven to rotate synchronously by a motor 32 on top of 31
Are arranged vertically, and the screw shaft 33 is provided with a plurality of thread mounting holes (not shown) through which a large number of warp threads z are suspended.
The mounting frame 35 of 34 is mounted via the nut portion 35a. A heddle 37 having thread insertion holes 36 formed at equal intervals is arranged at an intermediate position of the machine frame 31 to regulate the rows and columns of the warp z, and a predetermined position between the heddle 37 and the warp support plate 34. The cloth fell frame 38 is disposed in the.

(Problems to be Solved by the Invention) In the conventional device, since the warp support plate 34 and the cloth fell frame 38 are arranged with their centers fixed, when changing the number of rows and columns of the warp threads. Causes inconvenience. That is, in the conventional device, in order to make the center of the woven three-dimensional fabric W and the center of the warp group coincide with each other even when the number of warp yarns is changed, as shown in FIG.
It is necessary to pass the warp z through the thread insertion hole 36 so that the center of the warp is the center of the warp group and the center of the three-dimensional fabric W. However, when the warp yarns are arranged in this way, it is necessary to move the selvage forming device to the vicinity of the rows and columns of the warp yarn group, which complicates the structure of the device. Further, in order to change the number of warp yarns while keeping the selvage forming device in a predetermined position, as shown in FIG. 10 (b),
It is necessary to stretch the warp yarns with the rows and columns of the warp yarns aligned at one end. However, when the warp yarns are stretched in this manner, the center O _{1 of the} warp group and the center O ₂ of the three-dimensional fabric W, that is, the center O ₂ of the warp support plate 34 are deviated from each other, so that the fabric is bent, and the shape is collapsed. is there. When fixing the warp to the thread mounting hole (not shown) formed in the warp support plate 34 as in the conventional device, when the deviation of the center is small, the collapse of the fabric shape can be almost ignored, It is inconvenient to pass the warp thread through each thread attachment hole. For this reason,
As shown in FIG. 11, it is considered that one end of the warp z is held by hooking it on the hook 39 by springing it, but in this case, the phenomenon that the center of the warp z deviates from the center of the warp group and the shape of the woven fabric collapses may occur. It becomes remarkable.

Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, in the present invention, a fixing member for fixing and holding one end of a warp group in order to stretch a large number of warp threads in a plurality of rows and a plurality of columns. And the cloth fell frame for setting the outer shape of the three-dimensional fabric are arranged so that the central position of the warp group can be moved and adjusted in response to the change in the number of rows and columns of the warp group.

(Operation) In the device of the present invention, when a large number of warp yarns are stretched in a plurality of rows and a plurality of columns, the central position of the fixing member that fixes and holds one end of the warp yarns corresponds to the change in the number of rows and columns of the warp group. It is moved and adjusted so as to coincide with the center position, and similarly, the cloth fell frame is also moved and adjusted so that the center thereof is at the same position as the center position of the warp group. Therefore, even if the number of warp yarns is changed with one end of the row and column of the warp yarn group fixed at a predetermined position, the central positions of the fixing member, the cloth fell frame and the warp yarn group can be made to coincide with each other. It is possible to weave without complicating the structure and without breaking the shape of the three-dimensional fabric.

(Embodiment) Next, an embodiment embodying the present invention will be described with reference to FIGS. 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 vertically movable. The support plate 3 has a bracket 3a projecting from the upper end thereof, and one end of which is fixed to a winding drum (not shown) driven to rotate normally and reversely and is guided through a sprocket 4 disposed above the machine frame 1. The other end of the chain 5 is fixed, and a fixing member 6 for fixing and holding one end of the warp group is attached to the lower surface. And
The fixing member 6 is moved up and down together with the support plate 3 by the forward and reverse rotations of the winding drum.

Below the support plate 3, a well-known weaving section 7 in which a large number of warp yarns are laid in a plurality of rows and a plurality of columns is provided between each row and each column of weft yarns and vertical yarns so as to be orthogonal to the warp yarns. It is set up. A support base 8 is horizontally arranged above the weaving section 7, and a cloth fell 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 the warp z are arranged on both sides of the lower part of the machine frame 1 so as to be positively rotationally driven corresponding to the weaving operation. A tension detecting roller 11 is arranged above the warp bobbin 10 in parallel with the warp bobbin 10, and a guide roller 12 is arranged in parallel with the tension detecting roller 11 at an intermediate portion between the both tension detecting rollers 11. As shown in FIG. 5, both guide rollers
A long hole 13a is formed in a support bracket 13 that supports 12, and a bearing member 14 that rotatably supports a shaft 12a of the guide roller 12 is slidably supported along the long hole 13a and a bolt 14a is used. It is fixed by tightening.

As shown in FIGS. 2 and 3, the cloth fell frame 9 has a mounting plate 15 which is movably fixed to the support base 8 and a guide hole 16a for setting the outer shape of the three-dimensional fabric W, which is formed at the center of the bolt 17. The cloth fell frame body detachably fixed to the mounting plate 15 by the
It consists of 16 and. A through hole 8a is formed in the center of the support base 8, and four elongated holes 8b are formed so as to be located on straight lines passing through the center of the through hole 8a and orthogonal to each other. A through hole 15a is formed in the center of the mounting plate 15, and four long holes 15b orthogonal to the long holes 8b of the support base 8 are formed around the through hole 15a. And both long holes 8b, 15b
The mounting plate 15 is fixed to the support base 8 so as to be movable and adjustable by a square root bolt 18 and a nut 19 penetrating therethrough.

As shown in FIG. 4, elongated holes 3b are formed in the support plate 3 so as to be located on straight lines passing through the center of the supporting plate 3 and the fixing member 6 has elongated holes 6a orthogonal to the elongated holes 3b. The fixing member 6 is fixed to the support plate 3 so as to be movable and adjustable by means of a square root bolt 20 and a nut 21 which are individually formed and pass through both the long holes 3b and 6a.

Next, the operation of the device configured as described above will be described. In FIG. 7, warp yarns z forming a warp yarn group of a plurality of rows and a plurality of columns are fed out from a warp bobbin 10 and a tension detection roller 11 is provided.
And guided to the weaving section 7 via the guide roller 12 and
After being inserted through the warp guide 22 arranged in the above, it is fixed to the fixing member 6 through the cloth fell frame 9. And the support plate 3
In addition, weaving is started from the state in which the fixing member 6 is arranged at the lowermost position, and the known shuttle system in the weaving section 7,
The weft yarn and the vertical yarn are inserted between the rows and columns of the warp yarn z by a rapier method or the like, and ears are formed by the selvage forming device. Then, the warp yarn z is squeezed by the balance between the yarn tension of the weft yarn and the vertical yarn and the warp yarn tension, or by the beating action of the reed or the like to form the three-dimensional woven fabric W. As the three-dimensional fabric is formed, the fixing member 6 is pulled up by the chain 5 together with the support plate 3. The tension of the warp z supplied to the weaving section 7 is measured by the tension detection roller 11 and is always a predetermined tension.

FIG. 7 is a front view showing a state in which the three-dimensional woven fabric W is woven using the maximum number of warp yarns z. In this state, the fixing member 6 and the cloth fell frame 9 are arranged such that their centers coincide with the centers of the warp guide portions, and the center positions of both guide rollers 12 are also located on the center line of the warp guide portions. From this state, when the number of warp threads z used is reduced as shown in FIG. 8 (a), the center of the warp group, that is, the center of the three-dimensional fabric W is at the maximum number shown by O ₁ in FIG. 8 (a). Changes from the position of to the position indicated by O ₂ . In this device, the fixing member 6 and the cloth fell frame 9 corresponding to the change of the center position of the three-dimensional fabric.
The center position of the guide roller 12 is adjusted so that it coincides with the center position of the three-dimensional fabric, and the guide roller 12 is also adjusted so that its center position coincides with the center. In order to move the center of the cloth fell frame 9, the fixing position of the mounting plate 15 with respect to the support base 8 is changed. To change the fixing position of the mounting plate 15, nut 19
In that state, the mounting plate 15 is first moved in the lateral direction by a predetermined distance and then in the vertical direction by a predetermined distance, and the nut 19 is tightened. Thereby, the center of the mounting plate 15, that is, the center of the cloth fell frame 9 coincides with the center of the woven fabric. Similarly, the fixing member 6 can be easily moved so that its center position coincides with the center of the woven fabric by moving the fixing member 6 in the horizontal direction and the vertical direction by a predetermined distance with the nut 21 loosened and tightening the nut 21.

Also, the guide roller 12 is also moved so that the center of the roller coincides with the center of the woven fabric, but in this case, the center of both does not simply move so as to coincide with the center of the woven fabric. Determine its fixed position. That is, since both guide rollers 12 guide half of the warp yarns Z to be used, for example, when the maximum number of warp yarns z is used, as shown in FIG.
Each of the shafts 12a is arranged so that its axis 12a coincides with the center position of one half of the warp group. When the number of warp yarns is reduced, as shown in FIG. The fixed position of the bearing member 14 is moved along the long hole 13a of the support bracket 13 so that the axis of the guide roller 12 is aligned with the position corresponding to the center.

The size of the guide hole 16a formed in the cloth fell frame body 16 changes in proportion to the number of warp yarns when the drawing ratio of the warp yarns z is constant, but the number of warp yarns to be used is changed unless the fabric size is changed. Even if it is changed, it is not necessary 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 used changes, the center position of the woven fabric changes as shown in FIG. It is necessary to move and adjust the fixed positions of 9 and the guide roller 12.

It should be noted that the present invention is not limited to the above-described embodiment, and for example, instead of supplying the warp from the warp bobbin 10, a weight may be attached to one end of the warp to hang it down, or the warp may be vertically suspended. Instead of the tensioning, the tension may be extended in the horizontal direction.

As described above in detail, according to the present invention, when changing the number of warp threads used, the center of the cloth fell frame and the warp fixing member are aligned with the center of the warp and the center of the woven fabric. Since the movement is adjusted, even when the arrangement position of the selvage forming device is fixed, that is, when the number of warp yarns is changed based on one end of the row and column of the warp yarn, the center of the fabric, the center of the cloth fell, and the center of the warp fixing member are adjusted. Is always in agreement with each other, and the excellent effect that the three-dimensional woven fabric is woven without the shape of the woven fabric being deformed is exhibited.

[Brief description of drawings]

1 to 8 show an embodiment embodying the present invention. FIG. 1 is a schematic front view, FIG. 2 is a bottom view of a cloth fell frame, and FIG. 3 is A of FIG. -A sectional view taken along the line A, Fig. 4 is a plan view of a fixing member, Fig. 5 is a perspective view of a guide roller, and Figs. 6 (a) and 6 (b) are schematic plan views showing the relationship between the weaving portion and the guide roller. , FIG. 7 is a schematic front view of a state in which the maximum number of warp yarns is used, FIGS. 8 (a) and 8 (b) are schematic diagrams showing the relationship between the warp yarns and the guide holes of the cloth fell frame, and FIG. FIG. 10 is a schematic front view of the device, FIGS. 10 (a) and 10 (b) are schematic views showing the relationship between the position of the warp and the warp support plate, and FIG. 11 is a front view showing the warp holding state. The fixing member 6, the weaving section 7, the cloth fell frame 9, the guide roller 12, the mounting plate 15, the cloth fell frame body 16, the warp z, and the three-dimensional fabric W.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akashi Anahara 2-chome Toyota-cho, Kariya city, Aichi Prefecture Toyota Industries Corporation (72) Inventor Yoshiharu Yasui 2-chome Toyota-cho, Kariya city, Aichi prefecture Stock company Toyota Automatic Loom Works (72) Inventor Issa Suzuki 2-1-1 Toyota-cho, Kariya city, Aichi Stock company Toyota Toyota-loom Works (72) Inventor Shigeru Muramatsu 2-1-1 Toyota-cho, Kariya city, Aichi prefecture Stock company Toyota Automatic Loom Works (72) Inventor Hiroshi Omori 2-chome Toyota Town, Kariya City, Aichi Stock Company Toyota Automatic Loom Works (56) Reference JP-A-50-5672 (JP, A) Special Kosho 57-17990 (JP, B2)

Claims (1)

[Claims] 1. A three-dimensional loom in which a plurality of warp yarns are stretched in a plurality of rows and a plurality of columns, and weft yarns and vertical yarns are woven between each row and each column in a state orthogonal to the warp yarns. A three-dimensional weaving machine in which a fixing member for fixing and holding the cloth and a cloth fell frame for setting the outer shape of the three-dimensional fabric are arranged so that the central position of the warp group can be moved and adjusted according to the change in the number of rows and columns of the warp group.