JPH02242954A - Method for weaving three-dimensional fiber structure and reed device used for said weaving method - Google Patents

Abstract

PURPOSE:To readily produce the subject structure having various different cross-sectional shapes by arranging carriers holding fibers to be woven into a matrix state, dividing the matrix into blocks and carrying out basic weaving operations in turn alternately for each selected block. CONSTITUTION:Many carriers 1 are arranged to a matrix state in a plane and the carries-arranged area is divided into plural rectangular blocks G1, G2.... Plural blocks are selected from the prepared blocks, and fibers to be woven are held in the respective carriers of the selected blocks and subjected to basic weaving operations in turn alternately for each selected block. Three-dimensional fiber structure having various different cross-sectional shapes can readily be woven without changing the dispositions of carrier-driving equipments 10-13, etc.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for weaving a three-dimensional fiber structure in which a plurality of arytenoid m-fibers are woven into a three-dimensional structure by a weaving drive means equipped with a plurality of carriers, and The present invention relates to a reed device used in the weaving method.

(Prior art) Conventionally, as a reinforcing means for plastics or metals, so-called prepregs made of planar reinforcing fibers such as carbon fibers, glass fibers, or metal fibers are laminated in multiple layers. A method of embedding it in a material such as a plastic material has been adopted.

However, in the reinforced structure using this method, the fibers are not arranged in three dimensions, so it is relatively difficult to use a large amount of reinforcing fibers, and the shear strength between the layers of fibers arranged in a plane is relatively difficult. There was a problem that the strength of the reinforced molded body was not sufficiently improved.

In order to solve this problem, it has been proposed to use a braided string or a braided structure that is an extension of this, that is, a "three-dimensional fiber structure" to reinforce plastics, metals, and the like.

The weaving method for forming this three-dimensional fiber structure has already been disclosed in U.S. Pat. No. 4,312,261,
This weaving method is one of the methods called the torsion lace method.

This weaving method involves arranging a large number of carriers carrying bobbins in a fixed array within a limited plane, and applying the driving force of an electromagnetic solenoid provided on the outer periphery of the plane to each side of the carrier. By moving the carriers arranged in a line vertically or horizontally as a group and changing the positions of the bobbins using a magnet attached to the bobbin, the fiber molded product is made three-dimensional by intertwining the fibers to be woven. Out.

By the way, in the above-mentioned weaving method, when weaving a three-dimensional fiber structure having an irregular cross-sectional shape such as L-shape, 1-shape or C-shape, carriers are arranged in a shape corresponding to the irregular cross-section, and the carrier group is A method is adopted in which a plurality of electromagnetic solenoids, which are carrier driving devices, are arranged along the outer periphery, and the carriers are alternately moved vertically and horizontally in units of carrier rows, thereby weaving. However, with this method, it is necessary to change the arrangement of the carrier drive equipment each time we weave a different cross-sectional shape, and when weaving a three-dimensional fiber structure with a complex cross-sectional shape such as a hollow shape, the carrier There was a problem in that it was difficult to arrange the drive equipment.

On the other hand, the inventors of the present application have
In the publication, a weaving device is proposed that enables industrial production of large three-dimensional fiber structures at high speed. This weaving device uses a linear motor or other drive device to drive multiple carriers independently, so
It becomes possible to weave three-dimensional fiber structures having various irregular cross-sectional shapes with a single weaving device, and the above problem is solved. However, this method requires expensive drive equipment such as a linear motor that can be driven independently for each carrier, resulting in a problem that equipment costs and running costs become extremely excessive.

On the other hand, when weaving a three-dimensional fiber structure, the weaving density is generally set uniformly, but depending on the intended use, the weaving density may be partially different, or holes may be formed during weaving. It is desired to develop a method for weaving such three-dimensional fiber structures.

Furthermore, when weaving the above-mentioned three-dimensional fiber structure, simply utilizing tension acting on the fibers is insufficient to make the weave structure dense and tight. Therefore, a method is usually adopted in which the interwoven part is struck with a comb-shaped or rod-shaped adult material, but when this method is applied to fibers with low tensile strength or fibers that are heavily fluffed due to abrasion of the adult material, the fibers are cut. Problems such as hair and fuzz may occur, which is not desirable.

(Objective of the Invention) The main object of the present invention is to weave three-dimensional fiber structures with various irregular cross-sectional shapes using a weaving device with relatively low equipment cost, without changing the arrangement of carrier drive equipment, etc. It is an object of the present invention to provide a method for weaving a three-dimensional fiber structure.

Another object of the present invention is to provide a method for weaving a three-dimensional fiber structure that can weave three-dimensional fiber structures having partially different weaving densities.

Still another object of the present invention is to provide a method for weaving a three-dimensional fiber structure in which openings can be formed during weaving.

Still another object of the present invention is to prevent fiber breakage and fuzzing even when weaving the above three-dimensional fiber structure using fibers with low tensile strength or fibers that become heavily fuzzed due to abrasion of adult fibers. It is an object of the present invention to provide a reed device capable of tightening a woven structure.

(Means for Achieving the Object) The invention according to claim 1 is a weaving method for a three-dimensional fiber structure, in which a plurality of fibers to be woven are woven into a three-dimensional structure by a weaving drive means provided with a plurality of carriers. (3) arranging the carriers in a matrix and dividing the region where the carriers are arranged into a plurality of rectangular blocks along the row and column directions; (b) the step of arranging the carriers in a matrix; The method includes a step of selecting a plurality of blocks, holding the fiber to be woven in each carrier of the selected blocks, and sequentially and alternately performing basic weaving operations for each of the selected blocks. Here, the basic weaving process includes (b-1) a first step of relatively moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows by a predetermined amount in the row direction;
-2) a second step of relatively moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows by a predetermined amount in the row direction; (b-3) the carriers arranged in even-numbered columns; (b-4) a third step of relatively moving the carriers arranged in odd-numbered columns with the carriers arranged in odd-numbered columns by a predetermined amount in a direction opposite to the moving direction of the first step; (b-4) The method includes a fourth step of relatively moving the carrier and the carriers arranged in odd-numbered rows by a predetermined amount in a direction opposite to the moving direction of the second step.

The invention according to claim 2 is the weaving method according to claim 1, in which the selected plurality of blocks are set to partially overlap with each other, and the number of times of weaving of the overlapping portion and the non-overlapping portion of the blocks is the same. Set to .

The invention according to claim 3 is a weaving method for a three-dimensional fiber structure, in which a plurality of fibers to be woven are weaved into a three-dimensional structure by a weaving driving means provided with a plurality of carriers, wherein: (3) the carrier is a step of arranging the carriers in a matrix and dividing the area where the carriers are arranged into a plurality of rectangular blocks along the row and column directions; (b) without holding the fibers to be woven; With gap carrier rows and/or gap carrier columns formed by carriers arranged over the entire length in the row direction and/or column direction,
The method includes the step of selecting a plurality of the blocks so as to be separated from each other, holding the fibers to be woven in the carriers of the selected blocks, and simultaneously performing the basic weaving operation on each of the selected blocks.

The invention according to claim 4 is a weaving method for a three-dimensional fiber structure, in which a plurality of fibers to be woven are weaved into a three-dimensional structure by a weaving driving means provided with a plurality of carriers, wherein: (3) the carrier is A step of performing the basic weaving operation on the entire area of the carrier holding the fibers to be woven among the carriers arranged in a matrix; (b) performing the basic weaving operation on the entire area of the carrier holding the fibers to be woven; The method includes a step of setting rectangular blocks by dividing them into a plurality of blocks along the direction and column direction, and performing the basic weaving operation on at least one of the blocks.

The invention according to claim 5 is a weaving method for a three-dimensional fiber structure, in which a plurality of fibers to be woven are weaved into a three-dimensional fiber structure by a weaving drive means provided with a plurality of carriers, comprising: (3) the carrier; arranging them in a matrix and performing the basic weaving operation on the entire area of the carrier holding the weaving fibers; (b) performing the basic weaving operation on the entire area of the carrier holding the weaving fibers; A step of dividing rectangular blocks into a plurality of blocks along the row or column direction and repeating the basic weaving operation a predetermined number of times individually and alternately for the plurality of blocks; (C) the step of ( After the step specified by b), the method includes a step of performing the same step as the step specified by (3) above.

The invention according to claim 6 provides a reed device for tightening the woven structure of a three-dimensional fiber structure woven by the above-mentioned method for weaving a three-dimensional fiber structure, the reed device being directed toward the weaving section of the three-dimensional fiber structure. It consists of a means for blowing pressurized air.

(Example) A. Basic principle of weaving method for three-dimensional fiber structure In order to facilitate understanding of the present invention, first, the basic principle of a general method for weaving a three-dimensional fiber structure will be explained. FIGS. 1A to 1D show front views in which a large number of carriers 1 on which bobbins are mounted, for example, are arranged in a matrix in a plane.

Here, to simplify the explanation, carrier 1 is arranged in 4 columns (A, B, C, D) x 4 rows (P, Q, R, S
). It is assumed that the fibers to be woven (not shown) are pulled out from the bobbin of each carrier 1 toward the front side of the page, and are fixed at one location in a bundled state at the tip. In this state, the basic weaving operation consisting of the following four steps shown in FIGS. 1A to 1D is repeated for each carrier 1.

(3) First step: As shown in FIG. relative movement by a predetermined amount in the direction. In this case, the amount of movement of the carrier 1 is the length of an integer number of carriers 1, and here the case is shown in which the carrier 1 is moved by the length of one carrier. In addition,
The amount of movement of the carrier 1 is the same in the following steps.

(b) Second step: As shown in Figure 1B, the carriers 1 arranged in the odd numbered columns (A, C) and the carriers 1 arranged in the even numbered columns (B, D) are relative movement by a predetermined amount in the direction.

(c) Third step: As shown in FIG. A relative movement is made by a predetermined amount in a direction opposite to the movement direction of the first step.

(d) Fourth step: As shown in FIG. 1D, carriers 1 arranged in odd numbered columns (A, C) and carriers 1 arranged in even numbered columns (B, D) are A relative movement is made by a predetermined amount in a direction opposite to the movement direction of the second step.

Now, if we pay attention to the carrier la (indicated by diagonal lines in the figure), this carrier la will be able to move (A
, P), (A, Q), and (B, Q), and as the basic weaving operations are repeated, the zigzag trajectory shown by the arrow in FIG. 1A is followed. The same holds true for the carriers 1 placed at other positions, each of which moves along its own trajectory in accordance with the basic weaving operation. In this manner, by repeating the above basic weaving operation, the fibers to be woven are intertwined with each other, and a three-dimensional fiber structure 2 as shown in FIG. 2, for example, is woven.

B. First Embodiment FIG. 3 shows a side view of a weaving apparatus to which the method of weaving a three-dimensional fiber structure according to the first embodiment of the present invention is applied.

As shown in the figure, a weaving drive device 4 supported by a pedestal 3 is arranged in the center. Further, on both sides of the weaving drive device 4, there are gripping tools 6 that collect and grip the ends of the fibers to be woven 5 pulled out from the weaving drive device 4, and a predetermined grip on the fibers to be woven 5 via the gripping tools 6. A tension applying device 7 for applying tension is provided. Furthermore, the weaving drive device 4
A reed device 8 for tightening the woven structure of the three-dimensional fiber structure 2 woven by the weaving drive device 4 is provided between the and the gripping tool 6.
is provided.

FIG. 4 shows a front view of the weaving drive device 4 viewed from the longitudinal direction of the fibers 5 to be woven. In this weaving drive device 4, the carriers 1 are regularly arranged in a matrix of 8 rows x 12 columns inside a housing (not shown), and the carriers 1 are arranged on the four sides of the outer periphery in the column direction (vertical direction). ) and a carrier drive device 12.13 that moves the carrier 1 in the row direction (lateral direction) are provided. Carrier drive devices 10 to 13
is equipped with a rod 14 for pressing and moving the carrier 1 in each row or column, and a drive device 15 such as a cylinder or solenoid for sliding this rod 14, and is a block G1. of 4 rows x 4 columns. G2. G3, G4. G5. It is configured so that basic weaving operations can be performed in units of G6. That is,
The carrier drive device 10 includes a drive device 15A for suppressing and driving a pair of adjacent odd-numbered carriers 1 downward.
, 15C, 15E1, and drive devices 15B, 15D, 115Fl for suppressing and driving a pair of adjacent even-numbered carriers 1 downward. Similarly, the carrier driving device 11 includes drive devices 15A, 15C2, and 15E2 for pressing and driving a pair of adjacent odd-numbered carriers 1 upward, and also drives a pair of adjacent even-numbered carriers 1 upward. Drive devices 15B and 15D for pressing and driving
, 15F2. Further, the carrier drive device 12 is
Drive devices 15A and 15C8 are provided for suppressing and driving a pair of adjacent odd-numbered carriers 1 to the right, and driving devices 15B and 15D3 are configured to suppress and driving a pair of adjacent even-numbered carriers 1 to the right. Equipped with

Similarly, the carrier drive device 13 includes drive devices 15A and 15C4 for pressing and driving a pair of adjacent odd-numbered carriers 1 to the left, and also presses and driving a pair of adjacent even-numbered carriers 1 to the left. A driving device 1584.15D4 is provided for driving.

Dummy carriers 23 having a rectangular cross section are provided at both ends of the carrier rows in each row and each column, and the dummy carriers 23 are connected to the tips of rods 14 that drive the carrier rows to drive the carriers 1 over their entire length. The length is set to be the same as that of carrier 1 so that the carrier 1 can be pressed and pressed.

FIG. 5 shows a perspective view of the carrier 1, and FIG. 6 shows a sectional view thereof. As shown in both figures, the carrier 1 is a cylindrical body with a circular cross section having a through hole 19 in the center, a pin 21 is fixed to the center of both holes, and a pair of springs are installed on both sides of the pin 21. Means 22 are provided. One end of the spring means 22 is fixed to the pin 21, and the spring means 2
One end of the covering Ia fiber 1ff15 is connected to the other end of the covering Ia fiber 1ff15.

In this way, the covering W and fibers 5 are held on the carrier 1.

Note that the holding means is not limited to this, and any means for supporting the woven fibers 5 by the carrier 1 may be used, such as means for holding the woven fibers 5 by providing a through hole in the carrier 1 and passing the woven fibers through the holes. Any means may be used.

Referring again to FIG. 3, the fibers 5 to be woven, one end of which is supported by each carrier 1 as described above, are held together by the gripper 6 with their other ends gathered in one place.

In the tension applying device 7, a pulley 26 is rotatably attached to the upper end of a base 25, and one end of a wire rope 27 wound around the pulley 26 is connected to the gripping tool 6, and the other end of the wire rope 27 is connected to the gripping tool 6. A weight 28 is attached via a spring body 24.

Therefore, the tension of the fibers 5 to be woven is determined by the weight of the weight 28, and a constant tension is always applied to the fibers 5 even as the weaving operation progresses.

The reed device 8 has an adult body 29 for hitting the weaving part M of the three-dimensional fiber structure 2, and this adult body 29
The reed device 8 is rotated in a vertical plane including the fiber axis by a drive source such as a motor provided in the reed device 8. Further, wheels 30 are attached to the reed device 8 so that it can be moved.

The surface of the body 29 is coated or coated with a material having a low coefficient of friction such as tetrafluoroethylene resin. Adult 2
The shape of 9 may be a comb-like shape in which a plurality of rod-shaped bodies corresponding to the number of carrier rows are arranged in parallel, as shown in FIG. A comb-shaped one having a rod-like body is preferred.

Here, the action of the spring body 24 will be explained.

Now, considering the case where the weaving part M of the three-dimensional fiber structure 2 is beaten by the adult body 29 of the reed device 8, immediately after the weaving part M is beaten by the adult body 29, one end of the fiber 5 to be woven is connected. Spring means 22 in the carrier 1
momentarily increases.

Here, if the spring body 24 is not provided, the weight 28 will drop instantaneously as the spring means 22 stretches, and an impact force will act on the weaving fibers 5 as if the weight 28 had fallen. I will do it. Immediately after the impact force is applied, the spring means 22 which had been stretched now tries to contract instantaneously, and an impactful tensile force is applied to the fibers 5 to be woven. Therefore, problems such as the fibers 5 to be woven being cut or coming off from the gripping tool 6 may occur. On the other hand, if the spring body 24 is interposed between the gripping tool 6 and the weight 28 as shown in FIG. As a result, the above problems can be prevented from occurring.

As shown in FIG. 3, the weaving apparatus has an input means 3 for inputting various commands and information necessary for the weaving operation.
1, and a control means 3 for controlling the driving of the weaving drive device 4 and the reed device 8 based on a command input to the input means 31 and according to a program stored in a memory in advance.
2 is provided separately.

Next, the operation of weaving a three-dimensional fiber structure having an irregular cross-sectional shape using this weaving apparatus will be described.

For example, when weaving a three-dimensional fiber structure 2 having an L-shaped cross section, blocks Gl, G4. Select G5 and each block Gl
, G4. The fibers 5 to be woven are held by the carrier 1 located between the carrier 1 included in G5 and the dummy carrier 23 around the carrier 1. In FIG. 8, the carrier 1 is shown as a rectangle for convenience, and the carrier 1 that holds the fibers to be woven 5 is shown with a circle inside the rectangle. In this way, one end of each of the fibers to be woven 5 is held by a required carrier 1, and the other ends are connected so as to be bundled with the gripping tools 6 on both sides of the weaving drive device 4, as shown in FIG.
Tension is applied by the tension applying device 7. Then, information to select the L-shape and other information necessary for the weaving operation, such as the number of times of weaving, is inputted from the input means 31 (FIG. 3), and a weaving start command is given. In this case, the weaving operation is performed according to the flowchart shown in FIG.

First, in step S1, block Gl.

A basic weaving operation consisting of the following four steps is performed at least once, preferably once or twice, on the gathering area of G4.

■ The carriers 1 in rows A and C (Fig. 8) are moved upward by a predetermined amount (corresponding to the length of an integer number of carriers 1, and the same applies hereinafter), and the carriers 1 in rows B and D is moved downward a predetermined amount.

■ The carriers 1 in rows a, c, e, and g are moved to the right by a predetermined amount, and the carriers 1 in rows b, d, f, and h are moved to the right.
is moved to the left by a predetermined amount.

(2) The carriers 1 in rows A and C are moved downward by a predetermined amount, and the carriers 1 in rows B and D are moved upward by a predetermined amount.

■ ”+Cr er Carrier 1 in row g is moved by a predetermined amount to the left, and carriers 1 in rows b, d, f, and h are moved to the right by a predetermined amount.

Next, in step S2, a basic weaving operation consisting of the following four steps is performed at least once, preferably once or twice, on the collective area of blocks G4 and G5.

■ Carriers 1 in rows A, C, E, and G are moved upward by a predetermined amount, and carriers 1 in rows B, D, F, and H are moved upward by a predetermined amount.
is moved downward by a predetermined amount ■ Carrier 1 in row 012 is moved by a predetermined amount to the right, and f, h
Carrier 1 in the row is moved leftward by a predetermined amount.

■ The carriers 1 in rows A, C, E, and G are moved downward by a predetermined amount, and the carriers 1 in rows B, D, F, and H are moved downward by a predetermined amount.
is moved upward by a predetermined amount.

(2) Carrier 1 in row 012 is moved leftward by a predetermined amount, and carriers 1 in rows f and h are moved rightward by a predetermined amount.

Thereafter, in step S3, a basic weaving operation consisting of the following four steps is performed on the block G1 at least once, preferably once or twice.

(2) The carriers 1 in rows A and C are moved upward by a predetermined amount, and the carriers 1 in rows B and D are moved downward by a predetermined amount.

(2) The carriers 1 in rows a and c are moved by a predetermined amount to the right, and the carriers 1 in rows b and d are moved by a predetermined amount to the left.

(2) The carriers 1 in rows A and C are moved downward by a predetermined amount, and the carriers 1 in rows B and D are moved upward by a predetermined amount.

(2) The carriers 1 in rows a and C are moved to the left by a predetermined amount, and the carriers 1 in rows b and d are moved by a predetermined amount to the right.

Next, in step S4, a basic weaving operation consisting of the following four steps is performed on block G5 at least once, preferably once or twice.

(2) The carriers 1 in rows E and G are moved upward by a predetermined amount, and the carriers 1 in rows F and H are moved downward by a predetermined amount.

(2) Carrier 1 in row 022 is moved rightward by a predetermined amount, and carriers 1 in rows f and h are moved leftward by a predetermined amount.

(2) The carriers 1 in rows E and G are moved downward by a predetermined amount, and the carriers 1 in rows F and H are moved upward by a predetermined amount.

(2) Carrier 1 in rows e+g is moved leftward by a predetermined amount, and carriers 1 in rows f and h are moved rightward by a predetermined amount.

When the operation in step S4 is completed, the process advances to step S5, where it is determined whether the weaving operations shown in steps 81 to S4 have been repeated a predetermined number of times. If the weaving operation has not reached the predetermined number of times, the process returns to step S1. The above weaving operation is then repeated. In this way, in step S5, when it is confirmed that the weaving operation has been repeated a predetermined number of times, the driving of the weaving device is stopped.

Note that, normally, after each of the above-mentioned operations ①, ②, ②, ② in each step 81 to S4, the adult 2 of the reed device 8 is
The weaving section M is struck by the weaving member 9 to tighten the woven structure. However, in cases where the tightness of the weaving section M may be weak or when uniformity in the structure of the weaving section M is not required,
The number of reed operations may be reduced, or the reed device 8 itself may be omitted in some cases. Further, during the weaving period, the weaving section M moves in the direction of the weaving drive device 4 as the weaving operation progresses, so the reed device 8 is controlled by the control means 32 so as to move following the movement of the weaving section M. controlled.

According to the above-mentioned weaving method, the carrier 1 of blocks Gl, G4°G5 is the same as that of blocks Gl, G4. The fibers to be woven 5 are interwoven with each other by moving only within the gathering area of block G2. G3. G6 carrier 1 is block G
l, G4. Since there is no intrusion into G5, block G
l, G4. Two three-dimensional fiber structures 2 having a cross-sectional shape corresponding to G5 are simultaneously woven on both sides of the weaving drive device 4.

Note that blocks Gl, G4. G5 and each block G1. G4. Even if the basic weaving operations are sequentially and alternately performed for G5, the three-dimensional fiber structure 2 having a cross-sectional shape can be formed. However, in that case, block G
1, the boundary 33 of G4 (FIG. 8) and the block G4.
A linear step occurs along the boundary portion 34 of G5. On the other hand, in the above weaving method, the gathering area of blocks Gl and G4 and the block G4. Since the basic weaving operation is performed on the gathering area of G5, it is possible to reduce the influence of the step appearing at the boundary portions 33 and 34.

Further, in the above weaving method, step S3 of FIG.
Even if S4 is omitted, the three-dimensional fiber structure 2 having a cut-shaped cross section can be formed. However, in that case, the number of times of weaving of block G4 will be greater than that of blocks Gl and G5, so the weaving density of the part corresponding to block G4 will be lower than that of block G4.
1, higher than that of the portion corresponding to G5. On the other hand, in the above weaving method, step S3. S4 is provided and each block Gl, G4. Since the number of times of weaving for G5 is made equal, a uniform weaving density can be obtained over the entire cross section of the three-dimensional fiber structure 2.

On the other hand, when weaving a three-dimensional fiber structure 2 having a T-shaped cross section, blocks Gl, G2. G3. G5 is selected and the fiber 5 to be woven is held in the carrier 1 marked with a circle, and the information to select the T-shape and the information necessary for the weaving operation is entered manually through the input means 31 (FIG. 31). and gives a weaving start command. In this case, the weaving operation is performed according to the procedure shown in FIG. 11, and a three-dimensional fiber structure 2 having a T-shaped cross section is woven.

That is, blocks Gl, G2 . A basic weaving operation is performed on the collection area of block G3 (step S6), and then the block G2. A basic weaving operation is performed for the collection area of G5 (step S7). After that, blocks Gl, G3.
Basic weaving operations are sequentially executed for G5 (steps 88 to 510), but step S8. The weaving operations in S9 may be performed simultaneously. Then step S
In step 11, the number of times of weaving is determined, and the weaving operations of steps S6 to SIO are repeated until a predetermined number of weaves is reached. Thus, block Gl.

G2. G3. A three-dimensional fiber structure 2 having a T-shaped cross section corresponding to the gathering area of G5 is woven. The operation of the reed device 8 during the weaving period is as follows:
It is basically the same as when weaving.

In addition, when weaving a three-dimensional fiber structure 2 having a C-shaped cross section, blocks Gl, G2. G3. G4 and G6 are selected and the carrier 1 marked with a circle holds the fibers 5 to be woven, and the input means 31 (31st (Figure) to give a weaving start command. In this case, the weaving operation is performed according to the procedure shown in FIG. 13, and a three-dimensional fiber structure 2 having a C-shaped cross section is woven.

That is, blocks Gl, G2 . A basic weaving operation is performed on the collection area of block G3 (step 512), then a basic weaving operation is performed on the collection area of blocks Gl and G4 (step 813), and then the basic weaving operation is performed on the collection area of blocks G3. A basic weaving operation is performed on the gathering area of G6 (step 514
). However, step S13. The weaving operations in S14 may be performed simultaneously. After that, block G2. G
Basic weaving operations are performed sequentially for 4°G6 (steps S15, S16, 517). However, step S
16. The weaving operations in S17 may be performed simultaneously. Thereafter, the number of times of weaving is determined in step 818, and steps S12 to S13 are performed until a predetermined number of times of weaving is reached.
17 weaving operations are repeated. In this way, block G
l, G2. G3, G4. A three-dimensional fiber structure 2 having a C-shaped cross section corresponding to the gathering region G6 is woven. The operation of the reed device 8 during the weaving period is basically the same as when weaving the LW-shaped three-dimensional fiber structure 2 described above.

If the above-mentioned weaving device is used, a three-dimensional fiber structure 2 having an arbitrary cross-sectional shape formed by a combination of blocks 01 to G6 can be woven by the same weaving procedure as described above. In other words, three-dimensional fiber structures 2 having various irregular cross-sectional shapes can be woven using a relatively inexpensive weaving apparatus without changing the arrangement of the carrier drive devices 10 to 13 and the like.

C, tA2 Embodiment Figure 14 shows a schematic front view of the weaving drive device 4 used in the second embodiment of the present invention.

In this weaving drive device, carriers 1 are arranged in 30 rows and 30 columns, and carrier drive devices 10 to 13 are configured so that basic weaving operations can be performed in blocks of 3 rows and 3 columns. The rest of the structure of the weaving apparatus including the weaving drive device 4 is the same as that of the first embodiment.

In the above-mentioned weaving apparatus, when weaving a three-dimensional fiber structure 2 having a ring-shaped cross section, 56 sets of blocks surrounded by thick lines corresponding to the ring shape are selected and rounded as shown in FIG. The fibers 5 to be woven are held in the marked carrier 1, and information to select the ring shape and other information necessary for the weaving operation is input to the input means 31 (FIG. 31).
The weaving start command is given by inputting the following information. In this case, the weaving operation is performed according to the procedure shown in FIG. 15, and a three-dimensional fiber structure 2 having a ring-shaped cross section is woven. The basic weaving operation in this case is to move the 56 sets of blocks shown in FIG. 14 to the 16 sets of blocks GA, GB, G shown in FIG.
C, GD, GE, GF.

GG, GH, Gl, GJ, GK, GL, GM, GN, G
The processing is divided into blocks P and GQ, and the processing is performed using blocks GA-GQ as a unit.

That is, first, a basic weaving operation is performed on blocks GA, GB, GC, and GD (step 519). Next, a basic weaving operation is performed on the set area of blocks GE and GI, the set area of blocks GF and GL, the set area of blocks GG and GM, and the set area of blocks GH and GQ (step 520). . Furthermore, block G
E, GJ gathering area, block GF, GK gathering area,
Block GG, GN collection area, and block GH,
A basic weaving operation is performed for each GP gathering area (step 521). After that, block GA again,
Basic weaving operations are performed on GB, GC, GD (step 522), then blocks CI, GL, GM, GQ
A basic weaving operation is performed on the blocks GJ, GK, GN, and GP (step 323), and a basic weaving operation is performed on the blocks GJ, GK, GN, and GP (step 524). Thereafter, the number of times of weaving is determined in step S25, and the weaving operations of steps S19 to S24 are repeated until a predetermined number of times of weaving is reached. In this way, a three-dimensional fiber structure 2 having a ring-shaped cross section corresponding to the gathering area of 56 blocks surrounded by thick lines in FIG. 14 is woven. The operation of the reed device 8 during the weaving period is basically the same as in the first embodiment.

Using the above-mentioned weaving apparatus, it is possible to weave three-dimensional fiber structures 2 having various irregular cross-sectional shapes such as ■-shape, L-shape, J-shape, H-shape, C-shape, ring-shape, etc. by the same weaving procedure as above. Moreover, even if the cross-sectional shape is the same type, it is possible to weave relatively arbitrarily three-dimensional fiber structures 2 having different numbers of fibers depending on the number of blocks selected.

Further, in the weaving drive device 4, the carrier 1 is
The area arranged in row X-30th column includes four blocks GR and GS as shown by thick lines in FIG.

Divided into GT and GU, blocks GR, GS, and GT.

If the basic weaving operation is repeated a predetermined number of times for the collective area of GU, then the basic weaving operation is repeated a predetermined number of times for each block GR, GS, GT, GU.
As shown in FIG. 8, a three-dimensional fiber structure 2 having four branches in the middle can be woven. In addition, after making 4 branches, block GR
, GS, GT, and GU, if the basic weaving operation is repeated again, a hole 3 will be formed in the middle as shown in Fig. 19.
It is also possible to weave a three-dimensional fiber structure 2 having 5.

D. Third Embodiment FIG. 20 shows a schematic front view of the weaving drive device 4 used in the third and fourth embodiments of the present invention. This weaving drive device 4 has the same structure as the weaving drive device 4 of the second embodiment, and the other structure of the weaving device is also the same as that of the second embodiment.

In the above-mentioned weaving apparatus, after the fibers 5 to be woven are held in the carrier 1 marked with a circle in FIG. If the information that the setting should be higher than that of the weaving operation and other information necessary for the weaving operation are input from the input means 31 (FIG. 3), the 9 box surrounded by a bold line in FIG.
The weaving operation is performed on each block according to the procedure shown in FIG.

That is, the basic weaving operation is performed once for the collective area of blocks 611 to G19 (step 526). next,
Block Gll, G12. Collection area of G13 and block G17. G18. A basic weaving operation is performed at least once for each of the collection areas G19 (step 527). Thereafter, in step 328, it is determined whether the number of times of weaving has reached a predetermined number, and the step S26. The weaving operation in S27 is repeated. In this way, as shown in FIG. 22, a three-dimensional fiber structure 2 is woven in which the upper and lower regions have a higher weaving density than the central region.

The operation of the reed device 8 during the weaving period is basically the same as in the first embodiment.

When a composite material such as FRP is formed using such a three-dimensional fiber structure 2 with a rectangular cross-sectional shape, when bending stress is applied to this composite material, the bending stress is distributed from the center to the outer periphery as shown in FIG. The cost will be higher. Therefore, as shown in FIG. 22, if the weaving density is increased in the region where a high bending stress acts, the breaking strength will be improved.

In the above-mentioned weaving apparatus, after holding the fibers 5 to be woven in the carrier 1 marked with a circle in FIG. When information that the setting should be higher than that and other information necessary for the weaving operation is input from the input means 31 (FIG. 3), nine blocks Gll to G19 surrounded by thick lines in FIG. On the other hand, the weaving operation is performed according to the procedure shown in FIG.

That is, the basic weaving operation is performed once for the collective area of blocks 611 to G19 (step 529). Next, at least one basic weaving operation is performed on block G15 (step 830).

Thereafter, in step S31, it is determined whether the number of times of weaving has reached a predetermined number of times, and the step S29. The weaving operation in S30 is repeated. In this way, as shown in FIG. 25, a three-dimensional fiber structure 2 with a strong core, in which the central region has a higher weaving density than the peripheral region, is woven. The operation of the reed device 8 during the weaving period is basically the same as in the first embodiment.

In addition, blocks 011 to G 19 (1) 5511116
It goes without saying that three-dimensional fiber structures 2 having various weaving density distributions can be obtained by appropriately selecting blocks with a large number of 211 m.

In addition, in the example of FIG. 20, all blocks 011 to G1
Although the case where the three-dimensional fiber structure 2 having partially different weaving densities is weaved by holding the weaving fibers 5 on the carrier 1 included in the carrier 9 is explained, the carrier 1 included in a plurality of specific blocks It is also possible to hold the fibers 5 to be woven by the fibers 5 and weave the three-dimensional fiber structures 2 having partially different weaving densities in the same manner as described above.

In this way, as a result of being able to weave a three-dimensional fiber structure 2 with partially different weaving densities, for example, when this three-dimensional fiber structure 2 is used as a fiber-reinforced composite material, the fiber packing density is only in areas where stress is large. When strengthened by increasing the filtration capacity or used as a filter, a product with locally high filtration capacity can be obtained.

E. Fourth Embodiment Also, in FIG. 20, among blocks 011 to G19, blocks 011. G13, G17.
The carrier 1 belonging to G19 holds the fibers 5 to be woven, while the other blocks G12. G14. G15. G
16. The carrier 1 belonging to G18 was not allowed to hold the fibers 5 to be woven. That is, the block G14. of the fibers 5 to be woven is not held. G15. G12. The above block G
ll, G13. G17. Set each block of G19 to be isolated, and each isolated block Gil, G13,
017. Basic weaving operations were performed on G19 at the same time.

According to this weaving method, block Gll and block 61
3. and block G17 and block G19 are block G12. G15. block Gll
and block G17° and block 01B and block G
19 is block G14. G15. Because they are isolated by a gap carrier row consisting of a collection region of G16,
Four corner blocks Gll, G13. G17. Each carrier 1 belonging to G19 ends up moving only within each block. Therefore, the four corner blocks Gll, G13
．． G17. Even if the above basic weaving operation is performed on G19 at the same time, each block G11.013. G17. Since the weaving operation is performed independently in block G19, block G11. G
13. The three-dimensional fiber structure 2 is obtained simultaneously at four locations, G17 and G19.

Similarly, only the carrier 1 belonging to the gathering area of blocks Gll-013 and the gathering area of blocks 017-G19, respectively, holds the woven fibers 5, and
If a gap carrier row is formed in the collection area of G16, the collection area of blocks 611 to G1B and block G
The collection area of 17 to G'19 is blocks 014 to G16.
Therefore, even if the basic weaving operation is performed simultaneously on the gathering area of blocks 011 to 013 and the gathering area of blocks 017 to G19, carrier 1 in the reassembly area The weaving operations are performed independently without crossing over. Therefore,
Collective area of blocks 011-013 and blocks 017-
In the gathering region G19, a three-dimensional fiber structure 2 having a rectangular cross section is obtained at the same time. That is, according to the above weaving method, a plurality of three-dimensional structures can be woven simultaneously.

Note that the void carrier rows set when carrying out the above weaving method are created by carriers 1 arranged over the entire length in the row direction between the dummy carriers 23, 23 facing each other in the row direction, without holding the fibers 5 to be woven. Similarly, the void carrier rows do not hold the fibers 5 to be woven, but instead consist of dummy carriers 23. which face each other in the row direction.
It is required that the carriers 1 are arranged between 23 and 23 over the entire length in the column direction. By the way, block G11. Block 013 and blocks G17 to G19
The fibers 5 to be woven are held in the carrier 1 belonging to the collection area of G12. G14, G15. When G16 is a void block, that is, a block consisting of a void carrier in which the to-be-woven fibers 5 are not held, it is true that block G11°, block 013, and blocks G17 to G
The 19 gathering areas are isolated from each other, and in this case, the void carrier row is composed of blocks 014 to G16, but the void carrier column is composed of blocks G1
2. Although G15 is a gap block, block G18 is not a gap block, so it does not exist. Therefore, block G11. If the basic weaving operation is performed on the block 013 and the collective area of blocks 017 to G19 at the same time, the carrier 1 belonging to block Gll and block 01B will move into block G12, and the weaving operation will not be independent.

F. Fifth Embodiment FIG. 26 shows a schematic front view of the weaving drive device 4 used in the fifth embodiment of the present invention. This weaving drive device 4 is
The carrier drive devices 10 to 13 are configured so that the carrier 1 can perform basic weaving operations in units of rows and columns, and the other configurations are the same as the weaving drive device 4 of the second embodiment, The rest of the structure of the weaving device is also the same as that of the second embodiment.

In the above-described weaving apparatus, when forming a three-dimensional fiber structure 2 having openings 36 during weaving as shown in FIG. 27, as shown in FIG. 26, blocks G20. In this case, if G21 and G22 are selected, blocks G20°G21 and G21. The boundary of G22 is determined to correspond positionally to the aperture 36),
Each block G20. G21. After holding the fibers 5 to be woven in the carrier 1 marked with a circle in Fig. 26 included in G22, input information to the effect that openings 36 are to be formed during weaving and other information necessary for the weaving operation. It is inputted from the means 31 (FIG. 3). In this case, the weaving operation is performed according to the procedure shown in FIG. 28, and the three-dimensional fiber structure 2 having the openings 36 is woven.

That is, first block G20. G21. A basic weaving operation is performed on the collection area G22 (step 532
). This basic weaving operation is repeated a predetermined number of times until the weaving section M (FIG. 3) reaches the starting end of the opening section 36 (steps S32, 333). When the weaving section M reaches the opening 36, each block G20. G21. For G22, the basic weaving operation is repeated individually and alternately a predetermined number of times (steps 334-537). In this way, the weaving section M is connected to the opening section 3.
6, blocks G20°G21 . G2
The basic weaving operation is repeated a predetermined number of times for the two gathering areas (step S38°539), and a three-dimensional fiber structure 2 having openings 36 is woven as shown in FIG. The operation of the reed device 8 during the weaving period is basically the same as in the first embodiment.

As the fibers 5 to be woven, for example, resin-coated fibers such as carbon fibers coated with nylon resin are used.
As shown in the figure (cross-sectional view), a pin 37 is passed through the opening 36 of the woven three-dimensional fiber structure 2, and the three-dimensional fiber structure 2 is hot-pressed using a mold 38. Then, as shown in FIG.
A molded body 40 is obtained.

Normally (not limited to three-dimensional fiber orientation) when providing an opening 39 for bolt fixing in FRP, the hole is drilled using a drill or the like after FRP is formed. As a result, the fibers are cut at the apertures 39, resulting in an extreme decrease in strength (bending and tensile strength) compared to areas other than the apertures 39. However, in this method, the fibers are not cut at all. Since there is no cutting and Vr (fiber volume content) in the area around the opening 39 is higher than in other areas, there is almost no decrease in strength. Moreover, since the FRP molding forming hole portion 39 is formed, the general hole punching process (secondary process) in FRP is unnecessary.

Moreover, the surface condition of the peripheral portion of the opening 39 is also finished flat, and unevenness does not occur as in the case of secondary processing.

In the above embodiment, as shown in FIG. 26, the entire area of the carrier 1 holding the two fibers 5 to be woven is divided in the row direction into blocks G20. G21. Although G22 is formed, it goes without saying that the entire area of the carrier 1 holding the fibers to be woven 5 may be divided in the column direction to form blocks.

G. Modifications of the above embodiments In the first to fifth embodiments, as shown in FIG.
A reed device 8 having a mat 29 is used, and the weaving part M is hit with the mat 2 to tighten the woven structure. When weaving strong fibers that are highly fluffy due to friction with the metal body, instead of the reed device 8, as shown in FIG. Preferably, a constructed reed device 41 is used. This reed device 41 supplies air pressurized by a compressor 42 to a supply hose 43.
The air is sprayed onto the weaving section M from the nozzle 44 through the air pressure, for example, at a pressure of 2 to 5 kg/c-
and set the nozzle diameter to 1 to 3 mm. If you do this,
Even when low-strength fibers or fibers to be woven 5 that are heavily fluffed due to friction with adult animals are used, the woven structure can be tightened without cutting or fluffing the fibers.

Furthermore, even when high tensile strength fibers for composite materials are used as the fibers to be woven 5 and the weaving part M is tightened by beating with an adult (Fig. 3), for example, it is possible to prevent fluffing and facilitate FRP molding. In the case where a resin is attached to the surface of the fibers 5 to be woven, the frictional force between the fibers 5 to be woven may be high and the progress of the crossing portion may be poor. However, in order to support the progress of the crossing section, if air is blown by the nozzle 44 not only to the crossing section M but also to the fibers 5 to be woven between the crossing section M and the weaving drive device 4, Entanglement of the weaving fibers 5 with each other can also be prevented, and the load (especially movement) on the adult body 29 can be considerably reduced. Note that, instead of the nozzle 44 shown in FIG. 31, an annular array perforation nozzle may be used.

Further, in the first to fifth embodiments described above, as shown in FIG. Although the weaving methods of the first to fifth embodiments have described the case in which the method is applied, the weaving method of the first to fifth embodiments is such that while the covered wlim fibers 5 are continuously supplied from one side of the weaving drive device 4, the three-dimensional fiber structure is applied to the other side. The present invention can also be applied to a type of weaving apparatus that continuously weaves 2, and can also be applied to a weaving apparatus having a type of weaving drive device in which a bobbin is mounted on the carrier 1.

The three-dimensional fiber structure using the woven fibers woven according to the present invention can be used as a reinforcing fiber structure for composite materials such as FRP, FRM, and C/C composites, as well as for filters, heat insulating materials, soundproofing materials, vibration absorbing materials, and glands. It can be used as a functional material for backings, belts, clothing, etc.

Types of fibers to be woven include inorganic fibers such as metal fibers, carbon fibers, and alumina fibers, as well as various organic fibers.

and hybrid fibers of inorganic fibers and organic fibers, which are selected depending on the purpose.

(Effect of the invention) According to the method for weaving a three-dimensional fiber structure according to claim 1,
Divide the region of the matrix-arranged carriers into a plurality of rectangular blocks, select a plurality of the blocks, hold the fibers to be woven in each carrier of the selected blocks, and perform the basic weaving operation for each selected block. Since these steps are performed alternately in sequence, the cross-sectional shape of the three-dimensional fiber structure becomes a shape corresponding to the selected aggregate of the blocks. Therefore, by simply selecting blocks appropriately, three-dimensional fiber structures having various irregular cross-sectional shapes can be easily woven without changing the arrangement of carrier driving equipment or the like.

According to the method for weaving a three-dimensional fiber structure according to claim 2,
In the weaving method according to claim 1, the plurality of selected blocks are set to partially overlap with each other, and the number of times of weaving of the overlapping parts and non-overlapping parts of these blocks is set to be the same, so that the weaving A three-dimensional fiber structure with a uniform density and irregular cross-sectional shape is obtained.

According to the method for weaving a three-dimensional fiber structure according to claim 3,
A plurality of selected blocks were set to be isolated from each other by a void carrier row and/or a void carrier column, and the basic weaving operation was performed on each block simultaneously, so that a plurality of three-dimensional fiber structures could be fabricated. obtained at the same time.

According to the method for weaving a three-dimensional fiber structure according to claim 4,
Basic weaving operations are performed on the entire area of the carrier holding the fibers to be woven among the carriers arranged in a matrix, and the entire area of the carrier holding the fibers to be woven is divided into multiple sections along the row and column directions. Since we set rectangular blocks and perform basic weaving on at least one block, we change the number of weaves between the selected area and other areas, and partially adjust the weaving density. It is possible to weave different three-dimensional fiber structures.

According to the method for weaving a three-dimensional fiber structure according to claim 5,
A basic weaving operation is performed on the entire area of the carrier that holds the fibers to be woven among the carriers arranged in a matrix, and then the entire area is divided into rectangular blocks divided into a plurality of sections along the row or column direction. On the other hand, since the basic weaving operation is repeated a predetermined number of times individually and alternately, and the basic weaving operation is performed again on the entire area, it is possible to weave a three-dimensional fiber structure having openings during weaving.

According to the reed device according to claim 6, since the reed device is constituted by a blowing means that blows pressurized air toward the weaving portion of the three-dimensional fiber structure, it is possible to prevent the abrasion of low-strength fibers or adult fibers. Even when weaving a three-dimensional fiber structure using highly fluffy fibers, the woven structure can be tightened while preventing fiber breakage and fluffing.

[Brief explanation of drawings]

18 to 1D are diagrams for explaining the basic principle of the weaving method of a three-dimensional fiber structure, FIG. 2 is a perspective view of the three-dimensional fiber structure, and FIG. 3 is a first embodiment of the present invention. FIG. 4 is a schematic front view of the weaving drive device, FIG. 5 is a perspective view of the carrier, FIG. 6 is a sectional view of the carrier, and FIG. 7 is an adult weaving device. 8 is a front view of the block, FIG. 8 is a diagram showing blocks selected corresponding to the L-shape, and FIG.
The figure is a flowchart showing the operation when weaving a three-dimensional fiber structure having a cross-sectional shape in the first embodiment.
The figure shows blocks selected corresponding to the T-shape,
FIG. 11 is a flowchart showing the operation when weaving a three-dimensional fiber structure having a T-shaped cross section in the first embodiment;
FIG. 12 is a diagram showing blocks selected corresponding to the C-shaped shape, and FIG. 13 is a flow chart showing the operation when weaving a three-dimensional fiber structure with a C-shaped cross section in the first embodiment. FIG. 14 is a schematic front view of a weaving drive device used in the second embodiment of the present invention, and FIG. 15 is a flowchart showing the operation when weaving a three-dimensional fiber structure with a ring-shaped cross section in the second embodiment. FIG. 16 is a diagram showing blocks selected corresponding to the ring shape, FIG. 17 is a diagram showing blocks selected for weaving a three-dimensional fiber structure having branched regions, and FIG. 18 is a diagram showing blocks selected for weaving a three-dimensional fiber structure having branched regions. FIG. 19 is a perspective view showing a three-dimensional fiber structure having a hole, and FIG. 20 is a perspective view showing a three-dimensional fiber structure having a hole, and FIG. FIG. 21 is a flowchart showing an example of the operation when weaving three-dimensional fiber structures with different weaving densities in the fourth embodiment; FIG. The figure is a perspective view showing a three-dimensional fiber structure woven by the procedure shown in Fig. 21, Fig. 23 is a view showing the distribution of bending force acting on the composite material, and Fig. 2-4 is a diagram showing the distribution of the bending force acting on the composite material. A flowchart showing another example of the operation when weaving three-dimensional fiber structures having different weaving densities, FIG. 25 is a perspective view showing a three-dimensional fiber structure woven according to the procedure of FIG. 24, and FIG. A diagram showing blocks selected for weaving a three-dimensional fiber structure having openings, FIG. 27 is a perspective view showing a three-dimensional fiber structure having openings, and FIG. ff128 is shown in FIG. 27. A flowchart showing the operation when weaving a three-dimensional fiber structure, FIG. 29 is a perspective view showing the state of hot press treatment of the three-dimensional fiber structure, and FIG. 30 is an FRP obtained by hot press treatment.
FIG. 31 is a perspective view of the molded body, showing a modification in which a spraying device is provided as the reed device. 1...Carrier, 2...Three-dimensional fiber structure,
4... Weaving drive device, 5... Fiber to be woven, 41.
...Reed device, 01~G6. Gll~G22゜GA-GQ, GR~GU...Block diagram 2

Claims (6)

[Claims] (1) A method for weaving a three-dimensional fiber structure in which a plurality of fibers to be woven are woven into a three-dimensional structure by a weaving drive means provided with a plurality of carriers, comprising: (a) arranging the carriers in a matrix; dividing the area where the carriers are arranged into a plurality of blocks along the row and column directions to set rectangular blocks; (b) selecting a plurality of the blocks and each carrier in the selected blocks; hold the fibers to be woven, and carry out the following (b-1) to (b-) for each selected block.
A step of sequentially and alternately performing the basic weaving operation consisting of step 4); (b-1) The carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows are moved relative to each other by a predetermined amount in the row direction. a first step of moving; (b-2) a second step of relatively moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows by a predetermined amount in the row direction; (b-3) ) A third step of relatively moving the carriers arranged in even-numbered columns and the carriers arranged in odd-numbered columns by a predetermined amount in a direction opposite to the moving direction of the first step, (b-4) a fourth step of relatively moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows by a predetermined amount in a direction opposite to the movement direction of the second step; A method for weaving a three-dimensional fiber structure, comprising the steps of a) and (b). (2) Weaving of the three-dimensional fiber structure according to claim 1, wherein the selected plurality of blocks are set to partially overlap with each other, and the number of times of weaving is the same for the overlapping portion and the non-overlapping portion of the blocks. Method. (3) A method for weaving a three-dimensional fiber structure in which a plurality of fibers to be woven are woven into a three-dimensional structure by a weaving drive means provided with a plurality of carriers, the method comprising: (a) arranging the carriers in a matrix; (b) dividing the region in which the carriers are arranged into a plurality of blocks in the row direction and the column direction to form rectangular blocks; A plurality of blocks are selected so as to be separated from each other across a gap carrier row and/or a gap carrier column constituted by carriers arranged over the entire length in the column direction, and the fibers to be woven are applied to each carrier of the selected blocks. (b-1) A step of simultaneously performing basic weaving operations consisting of the following steps (b-1) to (b-4) on each selected block; a first step of relatively moving the carrier arranged in the odd-numbered column and the carrier arranged in the odd-numbered column by a predetermined amount in the column direction; (b-2) the carrier arranged in the even-numbered row and the carrier arranged in the odd-numbered row; (b-3) moving the carriers arranged in even-numbered columns and the carriers arranged in odd-numbered columns in the first step; (b-4) The carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows are moved relative to each other by a predetermined amount in a direction opposite to the moving direction of the second step. A method for weaving a three-dimensional fiber structure, comprising the steps of (a) and (b) specified by: a fourth step of relative movement by a predetermined amount in a direction opposite to the movement direction. (4) A method for weaving a three-dimensional fiber structure in which a plurality of fibers to be woven are woven into a three-dimensional structure by a weaving drive means provided with a plurality of carriers, the method comprising: (a) arranging the carriers in a matrix; a step of performing a basic weaving operation consisting of the following steps (a-1) to (a-4) on the entire area of the carrier holding the fibers to be woven; (a-1) an even number; a first step of relatively moving the carrier arranged in the th column and the carrier arranged in the odd numbered column by a predetermined amount in the column direction; (a-2) the carrier arranged in the even numbered row; a second step of relatively moving the carriers arranged in odd-numbered rows by a predetermined amount in the row direction; (a-3) the carriers arranged in even-numbered columns and the carriers arranged in odd-numbered columns; a third step in which the carriers are relatively moved by a predetermined amount in a direction opposite to the moving direction of the first step; (a-4) the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows; , a fourth step of relatively moving a predetermined amount in a direction opposite to the movement direction of the second step; (b) dividing the entire area of the carrier holding the fibers to be woven into a plurality of sections along the row direction and the column direction; a step of setting rectangular blocks and performing the basic weaving operation on at least one of the blocks; (5) A method for weaving a three-dimensional fiber structure, in which a plurality of fibers to be woven are woven into a three-dimensional structure by a weaving drive means provided with a plurality of carriers, comprising: (a) arranging the carriers in a matrix; a step of performing a basic weaving operation consisting of the following steps (a-1) to (a-4) on the entire area of the carrier holding the fibers to be woven; (a-1) an even number; a first step of relatively moving the carrier arranged in the th column and the carrier arranged in the odd numbered column by a predetermined amount in the column direction; (a-2) the carrier arranged in the even numbered row; a second step of relatively moving the carriers arranged in odd-numbered rows by a predetermined amount in the row direction; (a-3) the carriers arranged in even-numbered columns and the carriers arranged in odd-numbered columns; a third step in which the carriers are relatively moved by a predetermined amount in a direction opposite to the moving direction of the first step; (a-4) the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows; , a fourth step of relatively moving a predetermined amount in a direction opposite to the moving direction of the second step; (b) dividing the entire area of the carrier holding the fibers to be woven into a plurality of sections along the row direction or the column direction; (c) After the step specified in (b) above, (
A method for weaving a three-dimensional fiber structure, characterized by comprising the steps of (a), (b), and (c) specified by: performing the same step as the step specified by a). (6) A reed device for tightening the woven structure of a three-dimensional fiber structure woven by the method for weaving a three-dimensional fiber structure according to any one of claims 1 to 5, wherein the three-dimensional fiber structure A reed device comprising a blowing means for blowing pressurized air toward a weaving section.