JP2701435B2 - Method for weaving three-dimensional fiber structure and reed device used for the method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for weaving a three-dimensional fiber structure by weaving a plurality of woven fibers into a three-dimensional structure by means of a weaving driving means having a plurality of carriers. The present invention relates to a reed device used for the weaving method.

(Prior art) Conventionally, so-called prepregs in which reinforcing fibers such as carbon fibers, glass fibers, or metal fibers are formed in a planar shape as a reinforcing means such as plastic or metal are laminated in multiple layers, and the reinforcing fibers are reinforced. Embedded in a material such as a plastic material.

However, it is relatively difficult to use a large amount of reinforcing fibers because the fibers are not arranged in a three-dimensional direction in the reinforcing structure according to such a method, and the shear strength between the layers of the fibers arranged in a plane is relatively high. And the strength of the reinforced molded product is not sufficiently improved.

In order to solve this problem, it has been proposed to use a braided string or a braided structure obtained by expanding the braided string, that is, to use a “three-dimensional fiber structure” to reinforce plastic or metal.

A weaving method for forming the three-dimensional fiber structure is already disclosed in U.S. Pat. No. 4,321,261, and this weaving method is one of methods called a torsion lace method.

In this weaving method, a large number of carriers each having a bobbin mounted in a limited plane are arranged in a predetermined array, and the carriers are driven by an electromagnetic solenoid provided on an outer peripheral portion of the plane and each side of the carrier. By changing the positions of the bobbins while moving the carriers arranged in a row vertically or horizontally as a group by the magnet attached to the
A three-dimensional fiber molded body is formed by entanglement of woven fibers.

By the way, in the weaving method, when weaving a three-dimensional fiber structure having an irregular cross-sectional shape such as an L-shape, an I-shape, or a C-shape, the carriers are arranged in a shape corresponding to the irregular cross-section, and A method is adopted in which a plurality of electromagnetic solenoids, which are carrier driving devices, are arranged along the outer periphery, and weaving is performed by moving each of the carriers alternately in a carrier row unit in a vertical direction and a horizontal direction. However, in this method, it is necessary to change the arrangement of the carrier driving device each time weaving of a different cross-sectional shape is performed. There was a problem that the arrangement of the driving equipment was difficult.

On the other hand, the present inventors have proposed a weaving apparatus in Japanese Patent Application Laid-Open No. 63-50553 that enables large-sized three-dimensional fiber structures to be industrially manufactured at high speed. In this weaving apparatus, since a plurality of carriers are independently driven using a linear motor or the like as a driving device, weaving of a three-dimensional fiber structure having various irregular cross-sectional shapes can be performed by a single weaving apparatus. This makes it possible to solve the above problem.
However, this method requires expensive driving equipment such as a linear motor that can be driven independently for each carrier, so that there is a problem that the equipment cost and the running cost are extremely large.

On the other hand, when weaving into a three-dimensional fiber structure, the weaving density is generally set to be uniform, but depending on the intended use,
It is desired to develop a method of weaving a three-dimensional fiber structure in which the weaving density is partially varied or an opening is formed during weaving.

In the case of weaving the three-dimensional fiber structure, it is not enough to simply use the tension acting on the fiber to make the woven structure tightly closed. For this reason, a method of hitting the interwoven part with a comb-shaped or rod-shaped reed body is usually adopted.However, when this method is applied to fibers having low tensile strength or fibers that are extremely fuzzy due to rubbing of the reed body, the fiber Problems such as cutting and fluffing occur, which is not preferable.

(Object of the Invention) A main object of the present invention is to weave a three-dimensional fiber structure having various irregular cross-sectional shapes by a weaving device with relatively low equipment costs without changing the arrangement of carrier driving devices and the like. And 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 capable of partially weaving three-dimensional fiber structures having different weaving densities.

Still another object of the present invention is to provide a method for weaving a three-dimensional fiber structure capable of forming an opening during weaving.

Still another object of the present invention is to prevent the occurrence of fiber cutting and fluffing even when weaving the three-dimensional fiber structure using fibers having low tensile strength or fibrils that are extremely fuzzy due to rubbing of a reed. An object of the present invention is to provide a reed device that can tighten a woven structure while tightening.

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

According to a second aspect of the invention, in the weaving method according to the first aspect, the selected plurality of blocks are set so as to partially overlap each other, and the number of times of weaving of the overlapping portion and the non-overlapping portion of the block is the same. Set to.

The invention according to claim 3 is a method for weaving a three-dimensional fiber structure in which a plurality of woven fibers are woven into a three-dimensional structure by a weaving driving means having a plurality of carriers, wherein: Arranging in a matrix, dividing the region in which the carriers are arranged into a plurality of sections along the row direction and the column direction, and setting a rectangular block; (b) without holding the woven fibers, A plurality of the blocks are selected so as to be isolated from each other with a gap carrier row and / or gap carrier column formed by carriers arranged over the entire length in the row direction and / or the column direction,
Performing the basic weaving operation on each of the selected blocks at the same time by holding the woven fibers in each of the carriers of the selected block.

The invention according to claim 4 is a method for weaving a three-dimensional fiber structure in which a plurality of woven fibers are woven into a three-dimensional structure by a weaving drive unit having a plurality of carriers, wherein: Performing the basic weaving operation on the entire area of the carrier holding the woven fibers among the carriers arranged in a matrix; and (b) performing the entire area of the carrier holding the woven fibers. Setting a rectangular block divided into a plurality of sections along the direction and the column direction, and performing the basic weaving operation on at least one of the blocks.

The invention according to claim 5 is a method for weaving a three-dimensional fiber structure in which a plurality of woven fibers are woven into a three-dimensional fiber structure by a weaving drive unit having a plurality of carriers: (a) the carrier Are arranged in a matrix, and the basic weaving operation is performed on the entire area of the carrier holding the woven fibers of the carrier; (b) the entire area of the carrier holding the woven fibers is A step of setting a rectangular block by dividing into a plurality of blocks along the row direction or the column direction, and repeating the basic weaving operation for the plurality of blocks individually and alternately a predetermined number of times; b)
Executing the same step as the step specified by (a) after the step specified by (a).

The invention according to claim 6 is a reed device for tightening the weaving structure of the three-dimensional fiber structure woven by the method for weaving the three-dimensional fiber structure, wherein the reed device is directed toward a weaving part of the three-dimensional fiber structure. And pressurized air.

(Examples) A. Basic principle of weaving method of three-dimensional fiber structure To facilitate understanding of the present invention, first, the basic principle of a general method of weaving a three-dimensional fiber structure will be described. FIGS. 1A to 1D show front views in which, for example, carriers 1 each having a bobbin mounted thereon are arranged in a matrix in a plane. Here, to simplify the explanation,
This shows a case where the carriers 1 are arranged in 4 columns (A, B, C, D) × 4 rows (P, Q, R, S). It is assumed that woven fibers (not shown) are pulled out from the bobbin of each carrier 1 toward the near side of the paper surface, and are fixed at one place in a state where the tips are bundled. In this state, for each carrier 1, 1A
The basic weaving operation consisting of the following four steps shown in FIGS. 1 to 1D is repeated.

(A) First step: As shown in FIG. 1A, carrier 1 arranged in odd-numbered rows (P, R) and even-numbered rows (Q,
The carrier 1 arranged in S) is relatively moved in the row direction by a predetermined amount. In this case, the moving amount of the carrier 1 is set to a length corresponding to an integer number of the carriers 1, and here, a case where the carrier 1 is moved by the length of one carrier is shown. Note that the movement amount of the carrier 1 is the same in the following steps.

(B) Second step: As shown in FIG. 1B, carrier 1 arranged in odd-numbered columns (A, C) and even-numbered columns (B, C)
The carrier 1 arranged in D) is relatively moved by a predetermined amount in the column direction.

(C) Third step: As shown in FIG. 1C, carrier 1 arranged in odd-numbered rows (P, R) and even-numbered rows (Q,
The carrier 1 arranged in S) is relatively moved by a predetermined amount in a direction opposite to the moving direction in the first step.

(D) Fourth step: As shown in FIG. 1D, carrier 1 arranged in odd-numbered columns (A, C) and even-numbered columns (B,
The carrier 1 arranged in D) is relatively moved by a predetermined amount in a direction opposite to the moving direction in the second step.

Now, paying attention to the carrier 1a (shown by oblique lines in the figure), the carrier 1a is (A,
P), (A, Q), and (B, Q), and thereafter, as the weaving basic operation is repeated, follows a zigzag locus indicated by an arrow in FIG. 1A. The same applies to the carriers 1 arranged at other positions, and each of them moves with a unique trajectory according to the basic weaving operation. By repeating the above-described basic weaving operation, the woven fibers are entangled with each other, and, for example, a three-dimensional fiber structure 2 as shown in FIG. 2 is woven.

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

As shown in the figure, a weaving drive unit 4 supported by a gantry 3 is disposed at the center. Further, on both sides of the weaving drive unit 4, a gripper 6 for collecting and holding the end of the woven fiber 5 drawn out from the weaving drive unit 4, and a predetermined amount of the woven fiber 5 via the gripper 6. A tension applying device 7 for applying tension is provided. Further, between the weaving drive 4 and the gripper 6, a reed device 8 for tightening the weaving structure of the three-dimensional fiber structure 2 woven by the weaving drive 4 is provided.

FIG. 4 is a front view of the weaving drive device 4 as viewed from the longitudinal direction of the woven fiber 5. In the weaving drive 4, the carriers 1 are regularly arranged in a matrix of 8 rows × 12 columns inside a housing (not shown), and the carriers 1 are arranged on four sides of the outer periphery in the column direction (vertical direction). ) And carrier drive units 12 and 13 for moving the carrier 1 in the row direction (lateral direction). The carrier driving devices 10 to 13 are provided with rods 14 for pressing and moving the carriers 1 in each row or each column.
And a driving device 15 such as a cylinder or a solenoid for sliding the rod 14, and a block G1, G2, G3, G of 4 rows × 4 columns.
The basic weaving operation can be performed in units of 4, G5 and G6. That is, the carrier driving device 10 includes driving devices 15A ₁ , 15C ₁ , and 15E ₁ for pressing and driving the pair of adjacent odd-numbered rows of carriers 1 downward. Driving devices 15B ₁ , 15D ₁ , and 15F ₁ for pressing and driving downward are provided. Similarly, the carrier driving device 11 includes driving devices 15A ₂ , 15C ₂ , and 15E ₂ for pressing and driving the pair of adjacent odd-numbered carriers 1 upward, and the pair of adjacent even-numbered carriers 1. And driving devices 15B ₂ , 15D ₂ , and 15F ₂ for pressing and driving the head upward. The carrier driving device 12 is a driving device for pressing and driving the pair of adjacent odd-numbered carriers 1 rightward.
15A ₃ , 15C ₃ and a driving device 15 for pressing and driving the pair of adjacent even-numbered carriers 1 to the right.
B ₃ and 15D ₃ are provided. Similarly, the carrier driving device 13 includes driving devices 15A ₄ and 15C ₄ for pressing the pair of adjacent odd-numbered carriers 1 in the left direction, and moves the pair of adjacent even-numbered carriers 1 in the left direction. And driving devices 15B ₄ and 15D ₄ for pressing and driving.

A dummy carrier 23 having a rectangular cross section is provided at both ends of each row and each column of the carrier column. The dummy carrier 23 is connected to the tip of a rod 14 for driving the carrier column, and presses the carrier 1 over the entire length. The length is set to be the same as that of the carrier 1.

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 having a circular cross section having a through hole 19 at the center. A pin 21 is fixed at the center of the cylindrical hole, and a pair of springs is provided 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 one end of the woven fiber 5 is connected to the other end of the spring means 22. Thus, the woven fiber 5 is held by the carrier 1.

The holding means is not limited to this, but any means for supporting the woven fiber 5 by the carrier 1 such as a means for providing a through hole in the carrier 1 and allowing the woven fiber to pass through this hole to hold the woven fiber 5. Any means may be used.

Referring again to FIG. 3, as described above, each carrier 1
The woven fiber 5 having one end supported at one end is supported at its other end by a gripping tool 6 at one location.

In the tension applying device 7, a pulley 26 is rotatably mounted on the upper end of the 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 A weight 28 is attached via a spring body 24 to the weight. Accordingly, the tension of the woven fiber 5 is determined by the weight of the weight 28, and a constant tension is always applied to the woven fiber 5 even when the weaving operation proceeds.

The reed device 8 has a reed body 29 for beating the weaving part M of the three-dimensional fiber structure 2, and the reed body 29 moves within a vertical plane including the fiber axis of the woven fiber 5. It is rotationally driven by a drive source such as a motor provided therein. The reed device 8 is provided with wheels 30 so as to be movable.

The surface of the reed body 29 is coated or covered with a material having a low coefficient of friction such as a tetrafluoroethylene resin. Reed body 29
May have a comb shape in which a plurality of rods corresponding to the number of carrier rows are arranged in parallel, for example, as shown in FIG. 7, but the number of rods is 1/3 to 1/5 or less of the number of carrier rows. A comb-shaped member having the following rod-like body is preferable.

Here, the operation of the spring body 24 will be described. Now
Considering the case where the weaving part M of the three-dimensional fiber structure 2 is beaten by the reed body 29 of the reed device 8,
Immediately after being hit by 29, the spring means 22 in the carrier 1 to which one end of the woven fiber 5 is connected is momentarily extended. Here, when the spring body 24 is not provided, the weight 28 instantaneously descends with the extension of the spring means 22, so that the impact force acts as if the weight 28 dropped on the woven fiber 5. Will do. Immediately after the impact force acts, the spring means 22
Instantaneously shrinks, and an impact tensile tension acts on the woven fiber 5. For this reason, there is a possibility that the woven fiber 5 may be cut or may come off from the gripper 6. On the other hand, if the spring body 24 is interposed between the gripper 6 and the weight 28 as shown in FIG.
The absorption is alleviated by 24, so that the above problem can be prevented from occurring.

As shown in FIG. 3, input means for inputting various commands and information necessary for the weaving operation is provided in the weaving apparatus.
31 and a control means 32 for controlling the driving of the weaving drive device 4 and the reed device 8 in accordance with a program stored in a memory in advance based on a command input to the input means 31 are separately provided.

The operation when weaving a three-dimensional fiber structure having an irregular cross-sectional shape by this weaving apparatus will be described below.

For example, when weaving the three-dimensional fiber structure 2 having an L-shaped cross section, the blocks G1, G4, and G5 corresponding to the L-shaped shape are selected as shown in FIG. , G5, and the carrier 1 located between the carrier 1 and the dummy carrier 23 around the carrier 1 holds the woven fiber 5. In FIG. 8, the carrier 1 is indicated by a rectangle for convenience, and the carrier 1 holding the woven fibers 5 is indicated by a circle in the rectangle. Thus, each woven fiber 5
Are held on the required carrier 1 and the other ends thereof are connected to the weaving drive unit 4 on both sides thereof in a bundle as shown in FIG.
To give tension. Then, information necessary for the weaving operation, such as information for selecting the L-shaped shape and other weaving times, 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, a basic weaving operation including the following four steps is performed at least once, and preferably once or twice, on the set area of the blocks G1 and G4.

Carrier 1 in rows A and C (FIG. 8) is moved upward by a predetermined amount (corresponding to the length of an integer number of carriers 1 and so on), and carrier 1 in rows B and D is moved It is moved downward by a predetermined amount.

Carrier 1 in rows a, c, e, and g is moved rightward by a predetermined amount, and carrier 1 in rows b, d, f, and h is moved leftward by a predetermined amount.

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.

Carrier 1 in rows a, c, e, and g is moved leftward by a predetermined amount, and carrier 1 in rows b, d, f, and h is moved rightward by a predetermined amount.

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

The carrier 1 in rows A, C, E, and G is moved upward by a predetermined amount, and the carrier 1 in columns B, D, F, and H is moved downward by a predetermined amount. 1 is moved rightward by a predetermined amount, and the carrier 1 in the f and h rows 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 upward by a predetermined amount.

Carrier 1 in rows e and g is moved leftward by a predetermined amount, and carrier 1 in rows f and h is moved rightward by a predetermined amount.

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

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.

Carrier 1 in rows a and c is moved rightward by a predetermined amount, and carrier 1 in rows b and d is moved leftward by a predetermined amount.

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.

Carrier 1 in rows a and c is moved by a predetermined amount to the left, and carrier 1 in rows b and d is moved by a predetermined amount to the right.

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

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.

Carrier 1 in rows e and g is moved rightward by a predetermined amount, and carrier 1 in rows f and h is moved leftward by a predetermined amount.

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.

Carrier 1 in rows e and g is moved leftward by a predetermined amount, and carrier 1 in rows f and h is moved rightward by a predetermined amount.

When the operation of step S4 is completed, the process proceeds to step S5, where it is determined whether the weaving operation shown in steps S1 to S4 has been repeated a predetermined number of times.If the predetermined number of times has not been reached, the process returns to step S1. The above weaving operation is repeated. Thus, when it is confirmed in step S that the weaving operation has been repeated a predetermined number of times, the driving of the weaving device is stopped.

Normally, after the above-mentioned operations in steps S1 to S4, the weaving portion M is beaten by the reed body 29 of the reed device 8, and the woven tissue is tightened. However, when the weaving portion M may be weakly tightened or when the texture of the weaving portion M does not require uniformity, the number of reed operations may be reduced, and in some cases, the reed device 8 itself may be omitted. Good. In addition, during the weaving period, the weaving unit M advances in the direction of the weaving drive device 4 as the weaving operation proceeds, so that the reed device 8 is controlled by the control means 32 so as to move following the movement of the weaving unit M. Controlled.

According to the above-described weaving method, the carrier 1 of the blocks G1, G4, G5 moves only within the gathering area of the blocks G1, G4, G5 to interweave the woven fibers 5 with each other.
Since the carrier 1 of 3, G6 does not enter the blocks G1, G4, G5, the three-dimensional fiber structure 2 having an L-shaped cross section corresponding to the blocks G1, G4, G5 is provided on both sides of the weaving drive device 4. Two are woven simultaneously.

Note that blocks G1, G4, and G5 are selected, and blocks G1, G4,
Even if weaving basic operations are performed alternately on G5,
The three-dimensional fiber structure 2 having an L-shaped cross section can be formed. However, in that case, the boundary 33 between the blocks G1 and G4
(FIG. 8) and a linear step occurs along the boundary 34 between the blocks G4 and G5. On the other hand, in the above-described weaving method, the basic weaving operation is performed on the set area of the blocks G1 and G4 and the set area of the blocks G4 and G5.
It is possible to reduce the influence of the steps appearing on the lines 33 and 34.

In the weaving method, steps S3 and S4 in FIG.
Can be omitted to form the three-dimensional fiber structure 2 having an L-shaped cross section. However, in that case, since the number of weaving times of the block G4 is larger than that of the blocks G1 and G5,
The weaving density of the portion corresponding to 4 becomes higher than that of the portion corresponding to blocks G1 and G5. On the other hand, in the above weaving method, since steps S3 and S4 are provided to equalize the number of times of weaving for each of the blocks G1, G4 and G5, 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 the three-dimensional fiber structure 2 having a T-shaped cross section, the blocks G1, G2, G3, and G5 corresponding to the T-shaped shape are selected as shown in FIG. The input means 31 causes the carrier 1 attached to hold the woven fiber 5 and to input information for selecting the T-shaped shape and information necessary for the weaving operation.
(Fig. 31) to give a weaving start command.
In this case, the weaving operation is performed according to the procedure shown in FIG.
The three-dimensional fiber structure 2 having a T-shaped cross section is woven.

That is, first, the basic weaving operation is performed on the set area of the blocks G1, G2, G3 (step S6), and then the blocks G2, G3
The basic weaving operation is performed on the overlapping area 5 (step S7). Thereafter, the basic weaving operation is sequentially performed on the blocks G1, G3, and G5 (steps S8 to S10). However,
The weaving operations in steps S8 and S9 may be performed simultaneously. Thereafter, the number of weaving is determined in step S11, and the above steps S6 to S10 are performed until the predetermined number of weaving is reached.
Is repeated. Thus, blocks G1, G2,
A three-dimensional fiber structure 2 having a T-shaped cross section corresponding to the gathering region of G3 and G5 is woven. The operation of the reed device 8 during the weaving period is basically the same as in the case of weaving the L-shaped three-dimensional fiber structure 2.

In the case of weaving the three-dimensional fiber structure 2 having a C-shaped cross section, blocks G1, G2, G3, G4, and G6 corresponding to the C-shaped shape are selected as shown in FIG. The woven fiber 5 is held by the marked carrier 1 and information for selecting the C-shaped shape and other information necessary for the weaving operation are inputted from the input means 31 (FIG. 31), and a weaving start command is issued. give. In this case, the weaving operation is performed according to the procedure shown in FIG. 13, and the three-dimensional fiber structure 2 having a C-shaped cross section is woven.

That is, first, the basic weaving operation is performed on the set area of the blocks G1, G2, G3 (step S12),
The basic weaving operation is performed on the set area of G4 (step S1).
3) Then, a basic weaving operation is performed on the set area of the blocks G3 and G6 (step S14). However, step S1
3, The weaving operation of S14 may be performed simultaneously. Thereafter, the basic weaving operation is sequentially performed on the blocks G2, G4, and G6 (steps S15, S16, and S17). But step S
The weaving operations of 16, S17 may be performed simultaneously. Thereafter, in step S18, the number of times of weaving is determined, and the weaving operation of steps S12 to S17 is repeated until the number of times of weaving reaches the predetermined number of times. Thus, the three-dimensional fiber structure 2 having a C-shaped cross section corresponding to the gathering area of the blocks G1, G2, G3, G4, G6
Is woven. The operation of the reed device 8 during the weaving period is as follows.
This is basically the same as the case of weaving the L-shaped three-dimensional fiber structure 2.

By using the weaving device, the three-dimensional fiber structure 2 having an arbitrary cross-sectional shape formed by combining the blocks G1 to G6 can be woven by the same weaving procedure as described above. In other words, the three-dimensional fiber structure 2 having various irregular cross-sectional shapes can be woven by a weaving device having relatively low equipment costs without changing the arrangement of the carrier driving devices 10 to 13 and the like.

C. Second Embodiment FIG. 14 is a schematic front view of a weaving drive device 4 used in a second embodiment of the present invention.

In this weaving drive device, the carriers 1 are arranged in 30 rows × 30 columns, and the carrier drive devices 10 to 13 are configured so that the basic weaving operation can be performed in units of 3 rows × 3 columns blocks. Other configurations of the weaving device including the weaving drive device 4 are the same as those in the first embodiment.

In the above-described weaving apparatus, when weaving the three-dimensional fiber structure 2 having a ring-shaped cross section, as shown in FIG. 14, 56 sets of blocks surrounded by thick lines corresponding to the ring-shaped shape are selected and rounded. The woven fiber 5 is held by the marked carrier 1 and information for selecting the ring-shaped shape and other information necessary for the weaving operation are input from the input means 31 (FIG. 31), and a weaving start command is issued. give. In this case,
The weaving operation is performed according to the procedure shown in FIG. 15, and the three-dimensional fiber structure 2 having a ring-shaped cross section is woven. The basic weaving operation in this case is as follows: 56 sets of blocks shown in FIG. 14 are replaced with 16 sets of blocks GA, GB, GC, GD, GE, GF, GG, GH, GI, GJ, and 16 blocks shown in FIG.
It is divided into GK, GL, GM, GN, GP, and GQ, and this block GA to GQ is used as a unit.

That is, first, the basic weaving operation is performed on the blocks GA, GB, GC, and GD (step S19). Next, block GE, GI
Set area, block GF, GL set area, block GC, GM
For the set area of and the set area of blocks GH and GQ,
Each of the basic weaving operations is performed (step S20).
Further, a set area of blocks GE and GJ, a set area of blocks GF and GK, a set area of blocks GG and GN, and a block GH,
A basic weaving operation is performed on each of the GP gathering regions (step S21). After that, block GA, GB, GC, G again
The basic weaving operation is performed on D, (step S22), then the basic weaving operation is performed on the blocks GI, GL, GM, GQ (step S23), and further on the blocks GJ, GK, GN, GP. The basic weaving operation is performed (Step S24). afterwards,
In step S25, the number of times of weaving is determined, and the weaving operation of steps S19 to S24 is repeated until the number of times of weaving reaches the predetermined number of times. Thus, the three-dimensional fiber structure 2 having a ring-shaped cross section corresponding to the gathering area of the 56 blocks surrounded by the thick line in FIG. 14 is woven. Reed device 8 during weaving
Is basically the same as that of the first embodiment.

By using the above-described weaving apparatus, the three-dimensional fiber structure 2 having various irregular cross-sectional shapes such as I-type, L-type, J-type, H-type, C-type, and ring-type can be woven by the same weaving procedure as described above. Further, even with the same type of cross-sectional shape, the three-dimensional fiber structure 2 having a different number of fibers can be woven relatively arbitrarily depending on the number of blocks to be selected.

In the weaving drive device 4, the carrier 1 has 30
The area arranged in rows × 30 columns is divided into four blocks GR, GS, GT, GU as shown by the bold line in FIG.
After repeating the basic weaving operation for the set area of S, GT, GU a predetermined number of times, and then repeating the basic weaving operation for each block GR, GS, GT, GU a predetermined number of times, as shown in FIG. The three-dimensional fiber structure 2 branched into four in the middle can be woven. Also, after branching into four, the blocks GR, GS, GT, GU
If the basic weaving operation is repeated for the set area of
As shown in the figure, a three-dimensional fiber structure 2 having a hole 35 in the middle can be woven.

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

In the above-described weaving apparatus, after the woven fiber 5 is held by the carrier 1 marked with a circle in FIG. 20, the weaving density of the upper region and the lower region is reduced within the cross-section of the three-dimensional fiber structure 2. The information to the effect that it should be set higher than that of the area and other information necessary for the weaving operation are input to the input means 31 (31st
20), a weaving operation is performed on nine blocks surrounded by thick lines in FIG. 20 in the procedure shown in FIG.

That is, the basic weaving operation is performed once for the set area of the blocks G11 to G19 (step S26). Next, at least one basic weaving operation is performed on the set area of the blocks G11, G12, and G13 and the set area of the blocks G17, G18, and G19.
It is executed twice (step S27). Thereafter, it is determined in step S28 whether the number of times of weaving has reached a predetermined number of times, and the steps S26 and S27 are repeated until the number of times of weaving reaches the predetermined number of times.
Is repeated. Thus, as shown in FIG. 22, the three-dimensional fiber structure 2 in which the upper region and the lower region have a higher weaving density than the central region is woven. The operation of the reed device 8 during the weaving period is basically the same as that of the first embodiment.

When a composite material such as FRP is formed using the three-dimensional fiber structure 2 having such a rectangular cross-sectional shape, when the bending stress of the composite material acts, the bending stress is increased from the center to the outer periphery as shown in FIG. Part is higher. Therefore, as shown in FIG. 22, when the weaving density is increased in a region where a high bending stress acts, the breaking strength is improved.

Further, in the above-described weaving apparatus, after the woven fiber 5 is held by the carrier 1 marked with a circle in FIG. 20, the weaving density of the central region is reduced in the cross section of the three-dimensional fiber structure 2 in the peripheral region. If information indicating that the setting should be set higher than that and other information necessary for the weaving operation are input from the input means 31 (FIG. 31), the nine blocks G11 to G19 enclosed by thick lines in FIG. In response, the weaving operation is performed according to the procedure shown in FIG.

That is, the basic weaving operation is performed once for the set area of the blocks G11 to G19 (step S29). Then block G
The basic weaving operation is performed at least once for 15 (step S30). Thereafter, it is determined whether the number of times of weaving has reached the predetermined number of times in step S31, and the weaving operation of steps S29 and S30 is repeated until the number of times of weaving reaches the predetermined number of times.
In this way, as shown in FIG. 25, the three-dimensional fiber structure 2 having a strong core having a higher weaving density in the central region than in the peripheral region is woven. The operation of the reed device 8 during the weaving period is basically the same as that of the first embodiment.

It is needless to say that the three-dimensional fiber structure 2 having various weaving density distributions can be obtained by appropriately selecting a block in which the number of times of weaving is set to a large value among the blocks G11 to G19.

In the example of FIG. 20, the woven fibers 5 are held by the carriers 1 included in all the blocks G11 to G19.
Although the case where the three-dimensional fiber structure 2 having a different weaving density is partially woven has been described, the woven fiber 5 is held by the carrier 1 included in a plurality of specific blocks.
In the same manner as described above, the three-dimensional fiber structures 2 having partially different weaving densities may be woven.

In this way, the three-dimensional fiber structure 2 having a partially different weaving density can be woven. As a result, for example, when the three-dimensional fiber structure 2 is used as a fiber-reinforced composite material, the fiber packing density is increased only at a portion where the stress action is large. In the case where it is increased and strengthened or used as a filter, a filter having a locally high filtering ability can be obtained.

E. Fourth Embodiment In FIG. 20, among the blocks G11 to G19, the carrier 1 belonging to the blocks G11, G13, G17, and G19 located at the four corners holds the woven fiber 5, while the other blocks are not. The carrier fibers 1 belonging to G12, G14, G15, G16, and G18 do not hold the woven fiber 5. That is, a gap carrier row composed of an aggregate area of the blocks G14, G15, and G16 in which the woven fiber 5 is not retained, and a void area composed of the aggregate area of the blocks G12, G15, and G18 in which the woven fiber 5 is not retained. Depending on the carrier row, the above blocks G11, G13,
The blocks G17 and G19 were set to be isolated, and the basic weaving operation was simultaneously performed on the isolated blocks G11, G13, G17, and G19.

According to this weaving method, the blocks G11 and G13,
And block G17 and block G19 are blocks G12, G15,
The blocks G11 and G17, and the blocks G13 and G19 are isolated by the gap carrier rows consisting of the aggregate areas of the blocks G14, G15, and G16, respectively, while being separated by the gap carrier rows consisting of the aggregate areas of G18. Therefore, the carrier 1 belonging to the four corner blocks G11, G13, G17, G19 eventually moves only in each block. Therefore, even if the above-described basic weaving operation is simultaneously performed on the four corner blocks G11, G13, G17, and G19, each block G11, G1
Since the weaving operation is performed independently in 3, G17 and G19, the three-dimensional fiber structure 2 can be obtained simultaneously in four places of the blocks G11, G13, G17 and G19.

Similarly, an aggregate area and blocks of blocks G11 to G13
If only the carrier 1 belonging to each of the aggregation regions G17 to G19 holds the woven fiber 5, and the gap carrier rows are formed in the aggregation region of the blocks G14 to G16, the block G1
Since the aggregation region of 1 to G13 and the aggregation region of the blocks G17 to G19 are to be isolated by the void carrier rows constituted by the blocks G14 to G16, the aggregation region of the blocks G11 to G13 and the aggregation of the blocks G17 to G19 Even if the basic weaving operation is performed on the regions at the same time, the carriers 1 in both the collecting regions do not intersect, and the weaving operation is performed independently. Therefore, the three-dimensional fiber structure 2 having a rectangular cross section is obtained at the same time in the gathering area of the blocks G11 to G13 and the gathering area of the blocks G17 to G19. That is, according to the weaving method, a plurality of three-dimensional structures can be woven simultaneously.

In addition, the gap carrier row set when performing the above-described weaving method is formed by the carrier 1 arranged between the dummy carriers 23 facing each other in the row direction over the entire length in the row direction without holding the woven fibers 5. At the same time, the gap carrier row is constituted by the carrier 1 arranged in the column direction over the entire length between the dummy carriers 23 facing each other without holding the woven fibers 5. Is required. Incidentally, the woven fiber 5 is held by the carrier 1 belonging to the aggregate area of the blocks G11, G13 and G17 to G19, and the other blocks G1
2, G14, G15, G16 are void blocks, that is, blocks composed of void carriers in which the woven fibers 5 are not retained, the aggregate areas of the blocks G11, G13, and blocks G17 to G19 are certainly isolated from each other. In a state where
In this case, the gap carrier row is constituted by blocks G14 to G16, but the gap carrier row is a block G12,
Although G15 is a void block, it does not exist because block G18 is not a void block. Therefore, block G11, block G13 and blocks G17 to G19
When the basic weaving operation is simultaneously performed on the set area of the block G12, the carrier 1 belonging to the blocks G11 and G13 is
It moves inside and does not become an independent weaving operation.

F. Fifth Embodiment FIG. 26 is a schematic front view of a weaving drive device 4 used in a fifth embodiment of the present invention. This weaving drive 4 is
The carrier driving devices 10 to 13 are configured so that the carrier 1 can perform the basic weaving operation in units of each row and each column, and the other configurations are the same as those of the weaving driving device 4 of the second embodiment. Other configurations of the weaving device are the same as those in the second embodiment.

In the above-described weaving apparatus, when forming the three-dimensional fiber structure 2 having the opening portion 36 in the middle of weaving as shown in FIG. 27, the block G20 corresponding to the cross-sectional shape thereof as shown in FIG. Select G21 and G22 (in this case, block G2
The boundaries between 0, G21 and G21, G22 are determined so as to correspond to the apertures 36), and the weaving is performed on the carrier 1 indicated by a circle in FIG. 26 included in each block G20, G21, G22. After the fibers 5 are held, information indicating that the opening 36 is to be formed during weaving and other operations necessary for the weaving operation are input from the input 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, the basic weaving operation is performed on the set area of the blocks G20, G21, and G22 (step S32). 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 36 (steps S32 and S3).
3). When the weaving section M reaches the opening section 36, each block G20, G
The basic weaving operation is individually and alternately repeated a predetermined number of times for 21, G22 (steps S34 to S37). When the weaving section M reaches the end of the opening section 36 in this way, the blocks G20, G2
The basic weaving operation is repeatedly performed a predetermined number of times on the gathering area 1 and G22 (steps S38 and S39), and as shown in FIG. 27, the three-dimensional fiber structure 2 having the openings 36 is woven. The operation of the reed device 8 during the weaving period is basically the same as that of the first embodiment.

As the woven fiber 5, for example, a resin-coated fiber such as a carbon fiber coated with a nylon resin is used.
As shown in the figure (cross-sectional view), the 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. 30, the opening 39 corresponding to the opening 37 is formed.
FRP (fiber reinforced plastic) molded article 40 having

Normally (not limited to three-dimensional fiber orientation), when the FRP is provided with an opening 39 for fixing a bolt, a hole is formed by a drill or the like after the FRP is formed. As a result, the fiber is cut at the opening 39, which causes an extreme decrease in the strength (bending and tensile strength) as compared with the portion other than the opening 39. Since there is no cutting, and _Vf (fiber volume content) at the peripheral portion of the opening 39 becomes higher than other portions, the strength hardly decreases. In addition, since the opening 39 is formed at the time of FRP molding, a hole forming process (secondary process) on the FRP is generally unnecessary. In addition, the surface state of the peripheral portion of the opening 39 is also flattened, and there is no unevenness unlike the case of the secondary processing.

In the above embodiment, as shown in FIG. 26, the entire area of the carrier 1 in which the woven fiber 5 to be woven is to be held is divided in the row direction to form the blocks G20, G21, G22. It is needless to say that the entire region of the carrier 1 holding 5 may be divided in the column direction to form a block.

G. Modified Example of the Above Embodiment In the above first to fifth embodiments, as shown in FIG. 3, a reed device 8 having a reed body 29 is used, and the weaving part M is beaten by the reed body 29. Although the woven tissue is tightened, for example, when weaving a woven fiber that is strongly fuzzed by rubbing with a metal reed even in a low-strength fiber such as a hollow membrane for a separation membrane or an ultrafine metal wire, or a high-strength fiber, In place of the reed device 8, as shown in FIG. 31, a reed device 41 constituted by a blowing device for blowing a gas such as pressurized air.
It is preferred to use The reed device 41 is configured to blow air pressurized by a compressor 42 from a nozzle 44 to a weaving unit M via a supply hose 43. For example, the air pressure is 2 to 5 kg / cm ² , and the nozzle diameter is 1-3mm
And In this way, even when using low-strength fibers or woven fibers 5 that are extremely fuzzy due to rubbing against a reed, the woven structure can be tightened without causing fiber cutting or fuzzing.

In addition, even when the high-tensile fiber for the composite material is used as the woven fiber 5 and the weaving portion M is tightened by beating with a reed (FIG. 3), for example, fuzz prevention and FRP molding are facilitated. In the case where a resin is attached to the surface of the woven fiber 5 in advance, the frictional force between the woven fibers 5 may be high and the progress of the crossing portion may be poor. However, if the blowing of air by the nozzle 44 is performed not only on the weaving section M but also on the woven fiber 5 between the weaving section M and the weaving drive device 4 in order to support the progress of the crossing section,
Entanglement between the woven fibers 5 can be prevented, and the load (in particular, movement) of the reed body 29 can be considerably reduced. Note that the nozzle 44 is
Instead of the one shown, an annular array of perforated nozzles may be used.

Further, in the first to fifth embodiments, as shown in FIG. 3, each weaving device of the type in which two three-dimensional fiber structures 2 are simultaneously formed on both sides of the weaving drive device 4 is provided. I explained the case where the method was applied,
The weaving method of the first to fifth embodiments is of a type in which the three-dimensional fiber structure 2 is continuously woven on the other side while continuously supplying the woven fibers 5 from one side of the weaving drive unit 4. The present invention can be applied to a weaving device, and further to a weaving device having a weaving drive device of a type in which a bobbin is mounted on a carrier 1.

The three-dimensional fiber structure made of 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 composite, as well as a filter, a heat insulating material,
It can be used as a functional material such as a soundproofing material, a vibration absorbing material, and a ground packing, and as a belt or clothing.

Examples of the type of woven fibers include inorganic fibers such as metal fibers, carbon fibers, and alumina fibers, various organic fibers, and hybrid fibers of inorganic fibers and organic fibers. These are selected according to the application. .

(Effect of the Invention) According to the method for weaving a three-dimensional fiber structure according to the first aspect, the region of the carrier arranged in a matrix is divided into a plurality of rectangular blocks, and the blocks are selected and selected. Since the woven fibers are held in each carrier of the block, and the basic weaving operation is sequentially and alternately performed for each of the selected blocks, the cross-sectional shape of the three-dimensional fiber structure is a set of the selected blocks. It has a shape corresponding to the body. Therefore, a three-dimensional fiber structure having various irregular cross-sectional shapes can be easily woven without changing the arrangement of the carrier driving device or the like simply by appropriately selecting the blocks.

According to the weaving method for a three-dimensional fiber structure according to the second aspect, in the weaving method according to the first aspect, a plurality of selected blocks are set so as to partially overlap each other, and an overlapping portion of the blocks is set. Since the weaving frequency of the non-overlapping portion is set to be the same, a three-dimensional fiber structure having an irregular cross-sectional shape with a uniform weaving density can be obtained.

According to the method for weaving a three-dimensional fiber structure according to the third aspect, a plurality of selected blocks are set so as to be isolated from each other with a gap carrier row and / or a gap carrier column therebetween, and each block is simultaneously set. Since the basic weaving operation is performed, a plurality of three-dimensional fiber structures can be obtained at the same time.

According to the method for weaving a three-dimensional fiber structure according to the fourth aspect, the basic weaving operation is performed on the entire area of the carrier holding the woven fibers among the carriers arranged in the matrix, and the woven fibers are held. The entire area of the carrier is divided into a plurality of sections along the row direction and the column direction to form a rectangular block, and the basic weaving operation is performed on at least one block. By changing the number of times of weaving in other regions, three-dimensional fiber structures having partially different weaving densities can be woven.

According to the method for weaving a three-dimensional fiber structure according to claim 5, after performing the basic weaving operation on all the regions of the carrier holding the woven fibers among the carriers arranged in a matrix, the entire region is Because the basic weaving operation is repeated a predetermined number of times individually and alternately on the rectangular blocks divided into a plurality of sections along the row direction or the column direction, and the basic weaving operation is performed again on the entire area. ,
A three-dimensional fiber structure having an opening during weaving can be woven.

According to the reed device of the sixth aspect, since the reed device is constituted by the blowing means for blowing the pressurized air toward the weaving part of the three-dimensional fiber structure, the fibers having low strength and the reed body are rubbed. Even when weaving a three-dimensional fiber structure using fibrous fibers, the woven tissue can be tightened while preventing fiber cutting and fluffing.

[Brief description of the drawings]

1A to 1D are diagrams for explaining the basic principle of a method for weaving 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 a weaving drive device, FIG. 5 is a perspective view of a carrier, FIG. 6 is a cross-sectional view of the carrier, and FIG. 7 is a reed body. FIG. 8 is a view showing a block selected corresponding to the L-shape, and FIG. 9 is a view showing an operation when weaving a three-dimensional fiber structure having an L-shape cross section in the first embodiment. Flow chart, FIG. 10 shows T
FIG. 11 is a view showing a block selected according to the mold 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, and FIG. FIG. 13 shows a block selected corresponding to FIG.
FIG. 14 is a flowchart showing the operation of weaving a three-dimensional fiber structure having 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. FIG. 15 is a flowchart showing the operation when weaving a three-dimensional fiber structure having a ring-shaped cross section in the second embodiment, FIG. 16 is a diagram showing blocks selected corresponding to the ring shape, and FIG. A diagram showing a block selected to weave a three-dimensional fiber structure having a branch region,
FIG. 18 is a perspective view showing a three-dimensional fiber structure having a branch region, FIG. 19 is a perspective view showing a three-dimensional fiber structure having a hole, and FIG. 20 is a view showing the weaving density of the three-dimensional fiber structure. FIG. 21 is a diagram showing blocks selected for changing or simultaneously weaving a plurality of three-dimensional fiber structures. FIG. 21 is an example of an operation when weaving three-dimensional fiber structures having different weaving densities in the fourth embodiment. FIG. 22 is a perspective view showing a three-dimensional fiber structure woven by the procedure of FIG. 21,
Figure 23 shows the distribution of the bending component acting on the composite material,
FIG. 24 is a flowchart showing another example of the operation when weaving three-dimensional fiber structures having different weaving densities in the fourth embodiment, and FIG. 25 is a three-dimensional fiber structure woven by the procedure of FIG. FIG. 26 is a diagram showing a block selected for weaving a three-dimensional fiber structure having an opening, and FIG. 27 is a perspective view showing a three-dimensional fiber structure having an opening. FIG. 28 is a flowchart showing the operation in the case of weaving the three-dimensional fiber structure shown in FIG. 27, FIG. 29 is a perspective view showing a hot pressing state of the three-dimensional fiber structure, and FIG.
The figure is a perspective view of an FRP molded body obtained by hot pressing, and FIG. 31 is a perspective view showing a modification in which a spraying device is provided as a reed device. DESCRIPTION OF SYMBOLS 1 ... Carrier, 2 ... Three-dimensional fiber structure, 4 ... Weaving drive device, 5 ... Woven fiber, 41 ... Reeding device, G1-G6, G11-G22, GA-GQ, GR-GU ... …block

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-50553 (JP, A) JP-A-64-77662 (JP, A) JP-A-1-250438 (JP, A) US Pat. , A)

Claims (6)

(57) [Claims] 1. A weaving method for a three-dimensional fiber structure, wherein a plurality of woven fibers are woven into a three-dimensional structure by a weaving driving means having a plurality of carriers, wherein: (a) the carriers are arranged in a matrix. Arranging and setting a rectangular block by dividing an area where the carriers are arranged into a plurality of sections along a row direction and a column direction: (b) selecting a plurality of the blocks and selecting a plurality of blocks; Each carrier holds the woven fiber,
For each of the selected blocks, the following (b-1) to (b)
-4) a step of sequentially performing the basic weaving operation alternately: (b-1) the carriers arranged in the even-numbered rows and the carriers arranged in the odd-numbered rows by a predetermined amount in the row direction. (B-2) a second step of relatively moving the carriers arranged in the even-numbered rows and the carriers arranged in the odd-numbered rows by a predetermined amount in the row direction; 3) a third step of relatively moving the carriers arranged in the even-numbered rows and the carriers arranged in the odd-numbered rows by a predetermined amount in a direction opposite to the moving direction of the first step; (b-4) A) a fourth step of relatively moving the carriers arranged in the even-numbered rows and the carriers arranged in the odd-numbered rows by a predetermined amount in a direction opposite to the moving direction of the second step. Including the steps of (a) and (b) Weaving method of the three-dimensional fiber structure, characterized and. 2. The three-dimensional fiber structure according to claim 1, wherein the selected plurality of blocks are set so as to partially overlap each other, and the number of times of weaving of the overlapping portion and the non-overlapping portion of the block is made equal. Weaving method. 3. A method for weaving a three-dimensional fiber structure by weaving a plurality of woven fibers into a three-dimensional structure by means of a weaving driving means having a plurality of carriers, wherein: (a) the carriers are arranged in a matrix. Arranging and setting a rectangular block by dividing a region where the carriers are arranged into a plurality of regions along a row direction and a column direction: (b) without holding the woven fibers, A plurality of blocks are selected so as to be isolated from each other with a gap carrier row and / or gap carrier column constituted by carriers arranged over the entire length in the column direction, and the carrier is selected for each of the selected blocks. A step of holding a woven fiber and simultaneously performing a basic weaving operation including the following steps (b-1) to (b-4) on each of the selected blocks; (b-1) A first step of relatively moving the carriers arranged in the numbered columns and the carriers arranged in the odd-numbered columns by a predetermined amount in the column direction; (b-2) the carriers arranged in the even-numbered rows And (b-3) the carrier arranged in an even-numbered column and the carrier arranged in an odd-numbered column. A third step of relatively moving the carrier by a predetermined amount in a direction opposite to the moving direction of the first step; (b-4) the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows A fourth step of relatively moving by a predetermined amount in a direction opposite to the moving direction of the second step, wherein the steps (a) and (b) are specified. Weaving method. 4. A method for weaving a three-dimensional fiber structure in which a plurality of woven fibers are woven into a three-dimensional structure by a weaving driving means having a plurality of carriers, wherein: (a) the carriers are arranged in a matrix. Arranging and performing a basic weaving operation including the following steps (a-1) to (a-4) on the entire region of the carrier holding the woven fibers of the carrier; (a-1) A) a first step of relatively moving the carriers arranged in the even-numbered columns and the carriers arranged in the odd-numbered columns by a predetermined amount in the column direction; (a-2) the step arranged in the even-numbered rows A second step of relatively moving the carriers arranged in the odd-numbered rows in the row direction by a predetermined amount, and (a-3) being arranged in the odd-numbered columns with the carriers arranged in the even-numbered columns The carrier of the first step A third step of relatively moving by a predetermined amount in the direction opposite to the moving direction, (a-4) moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows in the second step A fourth step of relatively moving by a predetermined amount in the direction opposite to the direction, (b) setting a rectangular block by dividing the entire area of the carrier holding the woven fibers into a plurality of sections along the row direction and the column direction; And performing the basic weaving operation on at least one of the blocks. A method for weaving a three-dimensional fiber structure, comprising the steps (a) and (b) specified by: 5. A method for weaving a plurality of woven fibers into a three-dimensional structure by weaving drive means having a plurality of carriers, the method comprising: (a) arranging the carriers in a matrix; Arranging and performing a basic weaving operation including the following steps (a-1) to (a-4) on the entire region of the carrier holding the woven fibers of the carrier; (a-1) A) a first step of relatively moving the carriers arranged in the even-numbered columns and the carriers arranged in the odd-numbered columns by a predetermined amount in the column direction; (a-2) the step arranged in the even-numbered rows A second step of relatively moving the carriers arranged in the odd-numbered rows in the row direction by a predetermined amount, and (a-3) being arranged in the odd-numbered columns with the carriers arranged in the even-numbered columns The carrier of the first step A third step of relatively moving by a predetermined amount in the direction opposite to the moving direction, (a-4) moving the carriers arranged in even-numbered rows and the carriers arranged in odd-numbered rows in the second step A fourth step of relatively moving by a predetermined amount in a direction opposite to the direction, (b) setting a rectangular block by dividing the entire area of the carrier holding the woven fibers into a plurality of sections along a row direction or a column direction; And a step of repeating the basic weaving operation individually and alternately a predetermined number of times for the plurality of blocks; (c) After the step specified by (b), specified by (a) Performing the same step as the above step; and (a), (b) and (c). 6. A reed device for tightening the weaving structure of a three-dimensional fiber structure woven by the method for weaving a three-dimensional fiber structure according to claim 1. A reed device comprising blowing means for blowing pressurized air toward a weaving portion of a structure.