JP2813141B2 - Method and apparatus for producing anisotropic three-dimensional tissue preform - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Industrial applications] In a wide range of fields, such as space structures, supersonic aircraft, high-speed railways, and fusion reactors, three-dimensional materials that exhibit excellent performance even under severe mechanical and thermal loads. Structural materials made of woven composite materials, heat dissipation materials,
Development of a heat insulating material is desired. In these leading material fields, in particular, in connection with fiber composites, the orientation and texture of fibers and woven fabrics are optimized, and isotropic and anisotropic properties are exhibited in accordance with the performance required for products. The technique of forming the base material for the purpose is emphasized. The present invention relates to a method and an apparatus for manufacturing an anisotropic three-dimensional tissue preform for use in manufacturing a three-dimensional woven fabric composite material that realizes the above-described optimization of fiber orientation.

[0002]

2. Description of the Related Art In a method of weaving a three-dimensional woven fabric (preform) by a rod method, since a rod used for weaving is relatively short, another method of directly weaving a roving as a uniform continuous body is used. Compared to the three-dimensional woven fabric weaving method, the fiber type and the arrangement ratio can be changed for each axis and for each layer of the woven fabric. However, there are the following problems.

[0003] That is, the rod used for the weaving is composed of a raw material roving (fiber bundle) bundled number, fiber filling rate,
It is formed with an optimum thickness selected from the conditions such as the moldability of the fiber and the matrix and the performance required for the product. Therefore, the main part of the rod type three-dimensional loom, such as the rod insertion part, is inevitably designed and manufactured based on this optimum thickness as a main unit in the apparatus configuration. One of the disadvantages of the disclosed device is that it lacks versatility in changing the thickness of the rod, such as in obtaining a fiber arrangement ratio in accordance with the required mechanical and thermal properties of the composite material.

[0004]

The technical problem of the present invention is to obtain a variety in changing the thickness of a rod, which is one of the problems in weaving a rod-type three-dimensional triaxial woven fabric, and to obtain a fiber arrangement ratio depending on the axial direction. And an apparatus for producing an anisotropic three-dimensional tissue preform, whereby a three-dimensional preform for a composite material exhibiting mechanical and thermal anisotropy can be obtained. Is to provide. Another technical problem of the present invention is that a rod having an optimum thickness based on various conditions (hereinafter, referred to as a reference rod) is used as a reference in order to obtain versatility in changing the thickness of the rod described above. A device designed and manufactured with the dimensions of the reference rod as a main unit is used effectively by using a longitudinal rod (referred to as a Z-direction rod) having a thickness corresponding to an integral multiple of the thickness of the reference rod. Accordingly, it is an object of the present invention to provide a method and an apparatus for manufacturing an anisotropic three-dimensional tissue preform, which can easily weave the anisotropic three-dimensional tissue preform.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, a method for producing an anisotropic three-dimensional tissue preform according to the present invention basically comprises a rod having a square cross section obtained by solidifying a reinforcing roving with a matrix. Three-dimensional three-dimensional structure in which they are oriented in three directions of X, Y and Z orthogonal to each other.
When manufacturing the shaft preform, the above-mentioned rod having a reference thickness is used in the X and Y directions, and each side of the cross section is an integral multiple of the side length of the cross section of the rod in the X and Y directions in the Z direction. Using a rod having a corresponding length, the Z-direction rods are arranged in parallel at an interval corresponding to the thickness of the X- and Y-direction rods. Are inserted from a direction orthogonal to each other by selectively operating only a portion to be inserted by insertion means for inserting the portion at an interval corresponding to the thickness.

[0006] In the above-described method for manufacturing an anisotropic three-dimensional tissue preform, the X and Y directions are selectively operated only in the portion to be inserted by the insertion means for inserting the X and Y direction rods into the Z direction rod group. When the X and Y direction rods accumulated and stored in the magazine of the rods at intervals corresponding to the thickness of the rods are inserted between the Z direction rods by pressing the rod insertion rods, the rod insertion rods are inserted by the insertion selecting mechanism. It is possible to perform an operation for selecting whether to guide to the rod insertion opening for rod insertion or to the insertion rod evacuation hole where rod insertion is impossible, or to remove the rod insertion rod of the part where rod insertion is not performed. The rod insertion operation by the rod insertion rod can be performed only in the part where the rod is removed and the rod is inserted. Furthermore, X,
In order for the rod to face the insertion position of the Y rod or to insert the rod remaining in the magazine, the magazine may be shifted in the rod arrangement direction by a distance corresponding to an integral multiple of the thickness of the X and Y rods. it can.

The anisotropic three-dimensional structure preform manufacturing apparatus of the present invention basically uses a rod having a square cross section obtained by solidifying a reinforcing roving with a matrix.
In an anisotropic three-dimensional structure preform manufacturing apparatus for manufacturing a three-dimensional three-axis preform in which they are oriented in three directions of X, Y, and Z orthogonal to each other, each side of the cross section is a reference. A fabric support frame is provided in which Z-direction rods having a length corresponding to an integral multiple of the side length of the cross section of the X- and Y-direction rods are arranged in parallel at an interval corresponding to the thickness of the X- and Y-direction rods. With the Z-direction rod,
Insertion means for inserting the X and Y direction rods in directions perpendicular to each other at an interval corresponding to the thickness thereof;
An insertion means having means for selectively operating only a portion where the directional rod is to be inserted is provided.

In the above-described apparatus for manufacturing an anisotropic three-dimensional tissue preform, a magazine for stacking and storing X and Y direction rods at intervals corresponding to the thickness of the rods, and X, Y in the magazine are stored. A rod insertion rod for pressing the Y-direction rod and inserting it between the Z-direction rods,
An insertion selection mechanism for performing an operation of selecting whether to guide the rod insertion rod to a rod insertion opening of a magazine for rod insertion or to an insertion rod escape hole where rod insertion is not possible; or The rod insertion rod in a portion where insertion is not performed can be made removable. Further, a magazine moving mechanism for shifting the magazine in the rod arrangement direction by a distance corresponding to an integral multiple of the thickness of the X and Y rods may be provided.

[0009]

According to the above-mentioned means, it is possible to organize a three-dimensional preform using Z-direction rods having arbitrarily different thicknesses at an integral multiple of the thickness of the reference rod. Since it is possible to manufacture various preforms having different organizational states by using a device having the same mechanism designed and manufactured as a main unit in the device configuration, one of the problems in the weaving of a rod-type three-dimensional three-axis woven fabric is the problem of the rod. Diversity with respect to thickness changes is increased. As a result, it is possible to easily obtain a three-dimensional preform for a composite material that exhibits mechanical and thermal anisotropy. Further, the remaining amount of the rods in the magazine can be made uniform, and preparation operations required for weaving, such as replacement of the magazine and replenishment of the rod to the magazine, are reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a method and an apparatus for producing an anisotropic three-dimensional tissue preform according to the present invention will be described below in detail. The rod used in the production of the anisotropic three-dimensional texture preform in the present invention is a reference rod, that is, the convergence number of the roving as a reinforcing material, moldability, fiber filling rate, and the performance required for the product. A rod with a square cross section of the minimum thickness obtained by solidifying and shaping the roving with a matrix at the optimum thickness selected from the conditions, and each side of the cross section is an integral multiple of the side length of the cross section of the reference rod Each of the rods is formed into a predetermined shape by direct molding by a drawing method, cutting out from a molded plate, or the like.

The fibers forming each rod described above include:
For example, carbon fibers, aramid fibers, glass fibers, various metal fibers, and the like are used. In addition, as a matrix for solidifying these fibers into a rod shape, an epoxy resin, a thermosetting resin such as a phenol resin, a thermoplastic resin such as polyimide, nylon, or PEEK, or an inorganic material such as a metal, ceramics, or glass is used. be able to.
In order to impart anisotropy to the three-dimensional tissue preform, a rod made of a single material such as a metal or a carbon material may be used as a part of a rod constituting the preform.

As described above, the reference rod formed by the above method is an optimum rod selected from conditions such as the number of convergence of the raw material roving, the fiber filling rate, the moldability of the fiber and the matrix, and the performance required for the product. Although it is molded to a large thickness, for example, the number of bundled fibers is 12,000 (12K
Using a high-strength carbon fiber roving of F) and an epoxy resin, a rod having a square cross-section with the highest fiber volume filling rate (Vf) is formed by a pultrusion molding method.
%, A reference rod having a side of 0.81 mm as a rod thickness is obtained. In the case of a reference rod having a rectangular cross section, the thickness of the rod is the length of the short side of the cross section.

FIG. 1 shows a conceptual diagram of an anisotropic three-dimensional tissue preform manufactured according to the present invention. In this three-dimensional tissue preform, reference rods are used as the X and Y direction rods 1 and 2, and a rod whose cross section is three times as long as the reference rod is used as the Z direction rod 3. As such a structure, a three-dimensional tissue preform in which the X and Y direction rods 1 and 2 are made of a high-strength carbon fiber rod and the Z direction rod 3 is made of a highly elastic carbon fiber rod having a high thermal conductivity is formed. The carbon fiber-carbon composite material obtained by carbonizing and baking has a large strength such as impact and the like, and can exhibit anisotropy showing large heat conduction in the Z direction.

Next, a method and an apparatus for producing these anisotropic three-dimensional tissue preforms will be described in detail. FIG. 2 is for explaining an outline of a method for producing an anisotropic three-dimensional tissue preform using the rod. In the figure, a Z-direction rod 3 having an integral multiple of the thickness of the reference rod is
The fabric support frame 4 and the reed 5 are arranged side by side at an interval corresponding to the thickness of the reference rod. In addition, here, it is assumed that the weaving device designed and manufactured with the dimensions of the reference rod as the main unit in the device configuration can be used for manufacturing various anisotropic three-dimensional tissue preforms. X and Y direction rods 1 and 2 consisting of reference rods are
A large number of these rods are stacked and arranged in parallel to form a group of rods 8 and 9 in advance in the magazine at intervals corresponding to the thickness of the reference rods in their respective axial directions.

In order to insert the X and Y direction rods 1 and 2 between the Z direction rods, first, the X direction rod of the rod group 8 is located at a position facing the gap between the Z direction rods 3. 1 is sent out by the axial movement of the rod insertion rod 6 which is located on the same line as that of the rod insertion rod 6,
Into the gap. After the insertion of the X-direction rod 1, the rod insertion rod 6 is returned, and the rod that has been stacked upward is replenished in the portion that has become blank due to the delivery of the X-direction rod 1. Next, the fabric support frame 4 is lowered by a distance corresponding to the thickness of the reference rod, and the X that has already been inserted into the Z-direction rod gap is set.
On the directional rod, the Z-directional rod 3
The Y-direction rod 2 at a position facing the gap between the rods is sent out by the axial movement of the rod insertion rod 7 driven by the actuator, and inserted into the gap between the Z-direction rods 3. In addition, the upper rod is replenished to the portion having become, and the fabric supporting frame 4 is lowered by a distance corresponding to the thickness of the reference rod, and thereafter, the weaving is performed by repeating this operation.

The insertion of the X and Y direction rods is repeated and repeated, so that the X or Y direction rod at the position facing the gap between the Z direction rods in the rod groups 8 and 9 disappears,
Alternatively, when the number of the rods is reduced, as will be described later with reference to FIG. 4, when the X or Y direction rod cannot be inserted into the entire gap of the Z direction rod, the rod group 8 is required in the Y axis direction and the rod group 9 is required in the X axis direction. (An integer multiple of the thickness of the reference rod), and the above operation is repeatedly performed by causing the X and Y direction rods stacked in other rows to face the gap between the Z direction rods. An anisotropic three-dimensional tissue preform 10 composed of rods in X, Y, and Z directions is organized.

Inserting the X-direction rod and the Y-direction rod facing the space between the Z-direction rods into the gap between the Z-direction rods without shifting the positions of the rod groups 8 and 9 while fixing them. Is performed, only the rods in the specific rows of the rod group 8 and the rod group 9 are inserted at intervals between the Z-direction rods. In the course of the above-described repetitive operation, if necessary, the reed 5 (or the fabric support frame 4) is vertically moved so that the distance between the X-direction rod and the Y-direction rod inserted between the Z-direction rods is increased. A beating operation is performed to increase the density.

Next, the weaving operation of the anisotropic three-dimensional tissue preform when the thickness of the Z-direction rod is set to an even number and odd number times of the reference rod will be described in detail with reference to FIGS. . FIG. 3 shows the insertion positional relationship of the X and Y direction rods when the reference rod is used as each of the X, Y direction and Z direction rods. This is to show the configuration and operation of a known weaving device designed and manufactured with the dimensions of the reference rod as a main unit in the device configuration, for comparison with the embodiment of the present invention. Are arranged side by side at an interval corresponding to the thickness of the reference rod vertically and horizontally, and the X-direction and Y-direction rods are arranged at an interval corresponding to the thickness of the reference rod.

In this case, the X-direction rods RX ₁ , RX ₂ ... RX ₁₁ and the Y-direction rods RY ₁ , other than the RX ₁₂ and RY ₁₂ rods at one end of the rod groups 11 and ₁₂ in the X and Y directions, respectively. RY ₂ ..RY ₁₁ are rod gaps (rod insertion positions) X ₁ and X _{2 of the} Z-direction rod group 13, respectively.
..X ₁₁ and Y ₁ , Y ₂ ... Y ₁₁ are opposed to each other, and the positions of the magazines storing the rod groups 11 and 12 in the X direction and the Y direction are not shifted, and are fixed. X and Y directional rods can be inserted. Here, since the rods of RX ₁₂ and RY ₁₂ are unnecessary, it is not necessary to load them even if the magazine has a space for loading.

FIG. 4 shows the X and Y-direction rod insertion positions when a reference rod is used as the X-direction rod and the Y-direction rod, and the thickness of the Z-direction rod is twice the thickness of the reference rod. . Also in this example, it is assumed that the same device as in FIG. 3 and the same magazine are used, but among the rod groups 11 and 12 in the X and Y directions, X
Directional rods RX ₂ , RX ₅ , RX ₈ and Y-directional rod RY
₂ , RY ₅ , RY ₈ and rods RX ₁₁ , RY ₁₁ or more are not loaded into the magazine, but the other X-direction rods and Y-direction rods are loaded into the magazine, and weaving is performed in the following procedure. desirable.

(1) The fabric support frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (2) The Y-direction rod insertion positions Y ₁ , Y ₃ , Y ₅ , Y ₇ , Y-direction rods RY ₁ , RY ₄ , R
Inserting the Y _7, RY _10, (3) by a distance corresponding to the thickness of the reference rod the position of the magazine for storing the Y-direction rod is shifted in the direction (left) arrow, insertion (4) Y-direction rod Insert the Y-direction rods RY ₃ , RY ₆ , RY ₉ at positions Y ₂ , Y ₄ , Y ₆ opposed to them, and (5) set the position of the magazine for storing the Y-direction rod to the thickness of the reference rod. (6) Raise the fabric supporting frame 4, press the insertion rod against the reed 5, and beat the reed.

(7) The fabric support frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (8) The X-direction rod insertion positions X ₁ , X ₃ , X ₅ and X ₇ , X-direction rods RX ₁ , RX ₄ , R
Inserting the X _7, RX _10, (9) by a distance corresponding to the position of the magazine for storing the X-direction rod to the thickness of the reference rod is shifted in the arrow direction (right), (10) the insertion position of the X-direction rod X direction rods RX ₃ , RX ₆ , RX ₉ located at positions opposed to X ₂ , X ₄ , X ₆ are inserted. (11) The position of the magazine storing the X direction rods is determined by the thickness of the reference rod. (12) Raise the fabric support frame 4, press the insertion rod against the reed 5, and beat the reed, (13)
Thereafter, the above operations (1) to (12) are repeated,

In the above weaving example, RX ₂ ,
RX ₅ , RX ₈ and RY ₂ , RY ₅ , RY ₈ and RX ₁₁ ,
If the X and Y direction rods of RY ₁₁ or more are not stored, but the magazine is shifted in the opposite direction in (3), (5), (9) and (11) of the above procedure, RX ₃ and RX ₆ , R
A similar preform is formed by not loading X ₉ and RY ₃ , RY ₆ , RY ₉ and RX ₁₁ , and X and Y directional rods of RY ₁₁ or more, thereby performing an operation according to the above procedure. .

FIG. 5 shows the positional relationship between the X and Y direction rods when the reference rod is used as the X direction rod and the Y direction rod, and the Z direction rod is three times the thickness of the reference rod. . Also in this example, the same device as in FIG. 3 is used and the same magazine is used. However, the magazine is loaded with all of the rod groups 11 and 12 in the X and Y directions, and the following procedure is performed. Weaving is performed.

(1) The fabric support frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (2) Insertion positions Y ₁ , Y ₂ , Y ₃ , Y ₄ , of the Y-direction rod Y ₅ , Y
₆ shows a Y-direction rod RY at a position facing them.
₁ , RY ₃ , RY ₅ , RY ₇ , RY ₉ , RY ₁₁ are inserted. (3) Raise the fabric support frame 4, press the insertion rod against the reed 5, and beat the reed, (4) Y-direction rod Is shifted in the direction of the arrow (left) by a distance corresponding to twice the thickness of the reference rod,

(5) The fabric support frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (6) X-direction rod insertion positions X ₁ , X ₂ , X ₃ , X ₄ , X ₅ , X
₆ shows an X-direction rod RX at a position facing them.
₁ , RX ₃ , RX ₅ , RX ₇ , RX ₉ , RX ₁₁ are inserted. (7) The fabric support frame 4 is raised, the insertion rod is pressed against the reed 5, and the bar is beaten, (8) X-direction rod Is shifted in the direction of the arrow (right) by a distance corresponding to twice the thickness of the reference rod,

(9) The fabric support frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (10) Y-direction rod insertion positions Y ₁ , Y ₂ , Y ₃ , Y ₄ , Y ₅ , Y
₆ shows a Y-direction rod RY at a position facing them.
₂ , RY ₄ , RY ₆ , RY ₈ , RY ₁₀ , RY ₁₂ are inserted. (11) The fabric support frame 4 is raised, the insertion rod is pressed against the reed 5, and the bar is beaten, (12) the Y-direction rod. Shifts the position of the magazine in which is stored in the direction opposite to the arrow (right) by a distance corresponding to twice the thickness of the reference rod,

(13) The fabric supporting frame 4 is lowered about several times the thickness of the reference rod to obtain a rod insertion opening. (14) The X-direction rod insertion positions X ₁ , X ₂ , X ₃ , X ₄ , X ₅ , X
₆ shows an X-direction rod RX at a position facing them.
₂ , RX ₄ , RX ₆ , RX ₈ , RX ₁₀ , RX ₁₂ are inserted. (15) The fabric support frame 4 is raised, the insertion rod is pressed against the reed 5, and the bar is beaten, (16) X-direction rod Shifts the position of the magazine in which is stored in the direction opposite to the arrow (left) by a distance corresponding to twice the thickness of the reference rod, (17)
Thereafter, the above operations (1) to (16) are repeated, and when the rod is inserted in this procedure, the rods in the magazine are used on average.For example, only the odd-numbered rods in the magazine are used first. , And after the rod disappears, a procedure of inserting an even-numbered row of rods can be used.

FIGS. 6 to 9 show an example of an apparatus for realizing the weaving operation of the three-dimensional tissue preform described above. FIG. 6 shows a configuration example of a magazine 20 for stacking and storing X-direction rods or Y-direction rods 21 aligned in one direction. The magazine 20 is formed in a box shape having an upper surface opening by front and rear magazine frame plates 22 and 23, left and right side plates 24 and a magazine bottom plate 25, and a rod group in the X or Y direction is formed on the inner surface of the magazine frame plates 22 and 23. The two ends are fitted into a large number of rod guide grooves 27, 28 provided in an opposed state to accommodate the stacked state. The weight plate 2 fitted so as to slide along the rod guide grooves 27 and 28 above the rods 21 in each row.
9 is for facilitating sliding of the rod 21 to the bottom of the magazine along the rod guide grooves 27 and 28.

The rod guide grooves 27 and 28 are provided in the X and Y direction rod groups 11 and 1 shown in FIGS.
2 are stacked and accommodated in each rod guide groove 2
7, 28 are formed at an interval corresponding to the thickness of the reference rod, and the lower ends of the rod guide grooves 27, 28 are, as clearly shown in FIG. Is formed so as to be able to slide down to the groove 30 provided in the groove. The groove 30 of the magazine bottom plate 25 has one end opening on the magazine frame plate 23 side as a rod insertion opening 33 into which the rod insertion rod 32 is inserted, and the other end as a rod exit hole 34 through which the rod 21 from the magazine 20 is sent out. Things. In addition, the magazine bottom plate 25 is provided with an insertion rod withdrawal hole 36 located below the groove 30 for temporarily retracting the rod insertion rod 32 in a portion where the rod is not inserted. In FIG. 7, reference numeral 31 denotes a Z-direction rod.

Further, FIG. 7 shows a configuration of an insertion rod driving mechanism for performing the rod inserting operation, and an insertion selecting mechanism for selectively performing the rod inserting operation by the insertion rod driving mechanism. In the figure, the magazine 20 storing the rods 21 is fixed on a magazine support base 39, and the base ends of a large number of rod insertion rods 32 provided corresponding to the grooves 30 of the magazine bottom plate 25, An insertion rod gripping member 41 for driving them all together is held by an actuator (not shown), thereby forming an insertion rod driving mechanism 40 for performing a rod insertion operation, which is a common base with the magazine support base 39. Supported above.

Further, in order to guide the movement of the rod insertion rod 32, an insertion rod guide 42 having a guide groove is provided adjacent to the magazine bottom plate 25, and the rod insertion rod 32 is inserted into the magazine. The insertion path, that is, an insertion rod selection plate 43 for selecting one of the rod insertion opening 33 and the insertion rod retracting hole 36 in the magazine bottom plate 25 is provided.

The insertion rod selection plate 43 is made of a plate material having the same thickness as the rod insertion rod 32, and the same number of rod insertion rods 32 as the number of rod insertion rods 32 are used.
2 are arranged in parallel at the same interval as the arrangement interval of 2, and are arranged in the magazine 20 so as to be located on the extension of the rod insertion opening 33 and the insertion rod escape hole 36 into which the rod insertion rod 32 is inserted, whereby the rod is inserted. The rod 32 is guided. Further, the insertion rod selection plate 43 is mounted so that it can be individually moved up and down by a cam mechanism or a solenoid mechanism driven by a drive control device (not shown). The lower surface of the insertion rod retracting hole 36 provided in the lower portion of the magazine bottom plate is set to coincide with the lower surface of the rod insertion opening 33 at the highest position. Insertion rod selection plate 43
Constitutes a rod insertion selecting mechanism together with these mechanisms.

The insertion selection mechanism having the insertion rod selection plate 43 is, for example, in the example of FIG.
At the stage (2), the insertion positions Y ₁ , Y ₂ , Y
₃ , Y ₄ , Y ₅ , Y ₆
Direction rod _{RY 1, RY 3, RY 5} , RY 7, RY 9,
Insert only RY _11, Y-direction rod RY _2, RY _4, R
When Y ₆ , RY ₈ , RY ₁₀ , and RY ₁₂ are not inserted, a rod insertion rod 3 corresponding to the Y-direction rod to be inserted.
Only the rod 2 is guided to the rod insertion opening 33, and the rod insertion rod 32 corresponding to the Y-direction rod not to be inserted is guided to the insertion rod escape hole 36, for example.

Instead of using such an insertion selecting mechanism, when the base end of the rod insertion rod 32 is held by the insertion rod gripping member 41, the rod insertion rod 32 at a portion where rod insertion is not performed is individually screwed. The X- or Y-direction rod can no longer be inserted where the rod insertion rod 32 is missing. FIG. 8 shows details of the end face of the magazine 20 on the rod delivery side, in which a rod outlet hole 34 is formed in a vertically long shape, and a height adjusting panel 44 is attached to the outlet side so as to be vertically stretchable. The rod delivery height can be adjusted.

In the weaving operation described with reference to FIGS. 4 and 5, it is necessary to shift the position of the magazine in the direction of the arrow as needed. FIG. 9 shows a configuration example of a weaving apparatus provided with a mechanism for shifting the positions of the X-direction rod magazine and the Y-direction rod magazine in accordance with the progress of the insertion of the X and Y direction rods between the Z direction rods. Things. In this weaving apparatus, a Z-direction rod 31 having a thickness as shown in FIG. 4 or 5 is arranged in parallel using a fabric support frame 4 or a reed 5 as shown in FIG. A rod is accommodated in each magazine 20, and an insertion means for inserting the X-direction and Y-direction rods between the Z-direction rods by the rod insertion rod 32 as described with reference to FIG. 7 is provided.

Each magazine 20 for accommodating X-direction and Y-direction rods has a large number of X-direction or Y-direction rods (reference rods) inside them, as described with reference to FIGS. Are stacked and housed at an interval corresponding to the thickness of the magazine, and each is mounted on a magazine support base 39. The magazine support base 39 shifts the magazine support base 39 in the direction of the arrow in FIGS. 4 and 5 to change the position of the Z-direction rod gap into which the X-direction rod and the Y-direction rod are inserted. It is installed. The magazine moving mechanism 47 shifts the position of the magazine 20 by an integral multiple of the thickness of the reference rod by a feed screw 49 driven by a motor 48. The operation of this weaving device is substantially the same as that described above with reference to FIGS.

[0038]

According to the method and apparatus for producing an anisotropic three-dimensional texture preform of the present invention described in detail above, one of the problems in the weaving of a rod-type three-dimensional three-dimensional woven fabric is changing the thickness of a rod. Of three-dimensional tissue preforms with different rod thickness and fiber arrangement ratio depending on the axial direction by effectively utilizing one device designed and manufactured with the dimensions of the reference rod as the main unit. It enables production, whereby a three-dimensional preform for a composite material exhibiting mechanical and thermal anisotropy can be easily obtained. Further, the remaining amount of the rods in the magazine can be made uniform, and preparation operations required for weaving, such as replacement of the magazine and replenishment of the rod to the magazine, are reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an outline of an anisotropic three-dimensional tissue preform manufactured according to the present invention.

FIG. 2 is a perspective view for explaining an outline of a method of manufacturing an anisotropic three-dimensional tissue preform according to the present invention.

FIG. 3 is an explanatory diagram showing the insertion positional relationship of X and Y direction rods in a known case where a reference rod is used as the X, Y and Z direction rods.

FIG. 4 is an explanatory diagram showing the insertion positional relationship of X and Y direction rods when the thickness of a Z direction rod is twice as large as a reference rod.

FIG. 5 is an explanatory diagram showing the insertion positional relationship of X and Y direction rods when the thickness of the Z direction rod is three times the thickness of the reference rod.

FIG. 6 is a perspective view showing a configuration example of a magazine.

FIG. 7 is a cross-sectional view of an insertion selection mechanism for selectively performing a rod insertion operation.

FIG. 8 is a detailed view of a main part of an end face on a rod delivery side of the magazine.

FIG. 9 is a plan view showing an embodiment of the apparatus for producing an anisotropic three-dimensional tissue preform of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 X direction rod 2 Y direction rod 3, 31 Z direction rod 4 Fabric support frame 6, 7 Rod insertion rod 8, 9, 11, 12 Rod group 10 Anisotropic three-dimensional tissue preform 13 Z direction rod group 20 Magazine 21 Rod 32 Rod insertion rod 33 Rod insertion opening 36 Insertion rod escape hole

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-86539 (JP, A) JP-A-2-169741 (JP, A) JP-A-3-287836 (JP, A) JP-A-3-287836 287837 (JP, A) JP-A-2-99659 (JP, A) JP-A-2-104742 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D03D 41/00 D03D 25 / 00

Claims (8)

(57) [Claims] 1. A three-dimensional three-axis preform in which rods having a rectangular cross section in which reinforcing rovings are solidified by a matrix and are oriented in three directions of X, Y, and Z orthogonal to each other is manufactured. In the X and Y directions, use the rod having the reference thickness described above.
In the direction, a rod having a length corresponding to an integral multiple of the side length of the cross section of the rod in the X and Y directions is used, and the Z direction rod is adjusted to the thickness of the X and Y direction rods. The X and Y directional rods are inserted into the Z directional rod group at intervals corresponding to the thickness of the Z directional rod group, and only the portion to be inserted is selectively operated. And inserting the anisotropic three-dimensional tissue preforms in directions perpendicular to each other. 2. A method for manufacturing an anisotropic three-dimensional tissue preform according to claim 1, wherein only the portion to be inserted is selectively operated by the insertion means for inserting the X and Y direction rods into the Z direction rod group. When the X and Y direction rods accumulated and stored in the magazine of the X and Y direction rods at intervals corresponding to the thickness of the rods are inserted between the Z direction rods by pressing with the rod insertion rods,
The insertion selection mechanism allows an operation to select whether to guide the rod insertion rod to a rod insertion opening for rod insertion or to an insertion rod escape hole where rod insertion is impossible. A method for producing an isotropic three-dimensional tissue preform. 3. A method for manufacturing an anisotropic three-dimensional tissue preform according to claim 1, wherein only the portion to be inserted is selectively operated by the insertion means for inserting the X and Y direction rods into the Z direction rod group. When the X and Y direction rods accumulated and stored in the magazine of the X and Y direction rods at intervals corresponding to the thickness of the rods are inserted between the Z direction rods by pressing with the rod insertion rods,
Remove the rod insertion rod where the rod is not inserted,
A method for producing an anisotropic three-dimensional tissue preform, characterized in that a rod insertion operation is performed by a rod insertion rod only in a portion where a rod is inserted. 4. The method for producing an anisotropic three-dimensional tissue preform according to claim 1, wherein the magazines of the X and Y direction rods are stacked at an interval corresponding to the thickness of the rods. When inserting the stored X and Y direction rods between the Z direction rods by pressing with the rod insertion rods, make the rods face the insertion positions of the X and Y rods in the Z direction rods, or insert the rods remaining in the magazine The magazine is shifted in the rod arrangement direction by a distance corresponding to an integral multiple of the thickness of each of the X and Y rods.
A method for producing an anisotropic three-dimensional tissue preform. 5. An anisotropic method for producing a three-dimensional three-axis preform in which rods having a square cross section in which reinforcing rovings are solidified by a matrix are oriented in three directions X, Y, and Z orthogonal to each other. In the apparatus for producing a three-dimensional tissue preform, a Z-directional rod having a length corresponding to an integral multiple of the side length of the cross-section of the rod in the X and Y directions serving as a reference,
A fabric support frame arranged in parallel at an interval corresponding to the thickness of the X and Y direction rods, and the X and Y direction rods are arranged at an interval corresponding to the thickness with respect to the Z direction rod. An anisotropic three-dimensional tissue, characterized by comprising an insertion means for inserting from a direction orthogonal to the insertion means, the insertion means having means for selectively operating only a portion where the X and Y direction rods are to be inserted. Preform manufacturing equipment. 6. An apparatus for manufacturing an anisotropic three-dimensional tissue preform according to claim 5, wherein a magazine for stacking and storing X and Y direction rods at intervals corresponding to the thickness of the rods; A rod insertion rod for pressing the X and Y direction rods in the magazine and inserting the rod between the Z direction rods, and guiding the rod insertion rod to the rod insertion opening of the magazine for rod insertion, or An apparatus for producing an anisotropic three-dimensional tissue preform, comprising an insertion selecting mechanism for performing an operation of selecting whether to lead to an impossible insertion rod escape hole. 7. An apparatus for manufacturing an anisotropic three-dimensional tissue preform according to claim 5, wherein a magazine for stacking and storing X and Y direction rods at intervals corresponding to the thickness of the rods; A rod insertion rod for pressing the X and Y direction rods in the magazine and inserting the rod between the Z direction rods, and wherein the rod insertion rod in a portion where rod insertion is not performed is removable. An anisotropic three-dimensional tissue preform manufacturing device. 8. An apparatus for manufacturing an anisotropic three-dimensional tissue preform according to claim 5, wherein the X and Y direction rods are piled up at an interval corresponding to the thickness of the rods. A magazine for storing, and a rod insertion rod for pressing the X and Y direction rods in the magazine and inserting the rod between the Z direction rods, and making the rod face the insertion position of the X and Y rods in the Z direction rod, Alternatively, a magazine moving mechanism for shifting the magazine by a distance corresponding to an integral multiple of the thickness of each of the X and Y rods in the rod arrangement direction is provided for inserting a rod remaining in the magazine. An anisotropic three-dimensional tissue preform manufacturing device.