JPH0411047A - Bias yarn transfer device - Google Patents

Abstract

PURPOSE:To weave multilayered thick three-dimensional woven fabric, by arranging yarn feeding devices of laterally sending yarns by rotation of screw shafts whose spiral grooves are engaged with yarns at multiple stage and displacing a great number of arranged bias yarns in the width direction of weaving. CONSTITUTION:Yarn feeding devices consisting of a pair of two screw shafts are arranged at an upper and a lower two stages, screw shafts 30A, 30B and 31A are laid at operation positions, a shaft 31B at a backward moving position, bias yarns B are engaged with spiral grooves 30a of the shafts 30A and 30B at the upper and the middle stages, the shafts 30A, 30B and 31A are rotated in the same direction, the bias yarns B engaged with the shaft 30A are transferred to the right, the bias yarns B engaged with the shaft 30B are moved to the left and delivered successively to the lower screw shafts. When the bias yarns B engaged with the upper shaft 30A are completely consumed, the shaft 30A is retreated to the backward moving position, a supporting member is revolved, the shafts 30B and 31B are made in a vertically arranged state, the shafts 30B, 31A and 31B are rotated in the same direction in the similar way, the above-mentioned processes are repeated and the bias yarns B are laterally sent to form the bias yarn layer of three-dimensional woven fabric.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is characterized in that during weaving, a large number of bias threads in a set of two layers are tilted symmetrically to each other with respect to the longitudinal direction and the width direction of the fabric. This invention relates to a bias yarn moving device that moves bias yarn so that it is continuously folded and woven with a width of .

[Prior art] Composite materials using a three-dimensional fabric made of three-component threads in the X, Y, and Z directions as a skeleton material and matrix materials made of resin or inorganic materials are used in the structures of rockets, aircraft, automobiles, ships, and buildings. It is expected to have a wide range of uses as a material. Although these composite materials exhibit sufficient strength against tensile loads, compressive loads, and bending loads acting in the X, Y, and Z directions, the amount of deformation caused by forces diagonal to the axial direction is large. There are drawbacks. As a solution to this drawback, JP-A-1
-292162 publication describes fiber threads in the longitudinal direction, transverse (width) direction, and perpendicular direction, and two fiber threads that run diagonally in a bracing manner and intersect each other with respect to the longitudinal direction and transverse direction.
A fiber structure (three-dimensional fabric) composed of directional fiber threads (bias thread) has been proposed. The manufacturing process involves vertically moving the yarn guide member of the required length, and
The fiber structure is arranged in accordance with the shape and design density suitable for the fiber structure to be manufactured, and the fiber threads are inserted between the guide members in the longitudinal direction, the transverse direction, perpendicularly, meanderingly, and in the form of a strut in the vertical direction. This is carried out by repeating the process a required number of times, then removing the thread guide member and inserting the vertical thread through the removed thread.

[Problems to be Solved by the Invention] However, in the method for manufacturing a fiber structure (three-dimensional fabric) disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-292162, one continuous thread is guided by a large number of threads. It is difficult to mechanize the insertion of fiber threads (bias threads), which are inserted in a bracing manner in the longitudinal and transverse directions of the fiber threads because they are inserted between members. In addition, when producing three-dimensional fabrics, it is necessary to arrange a large number of thread guide members each time, and there is a problem that it is difficult to continuously produce three-dimensional fabrics.

The present invention has been made in view of the above problems, and includes:
The purpose of this is to move a large number of bias threads in a set of two layers during weaving so that they are tilted symmetrically to each other in the longitudinal and width directions of the fabric and are continuously folded back at a predetermined width. An object of the present invention is to provide a bias yarn moving device.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a support frame arranged at right angles to the width direction of the fabric is disposed on both sides of the bias yarn group extending from the cloth front position to the bias yarn supply section. a pair of support members each arranged rotatably within a plane, and a pair of support members rotatable on their own axis and capable of engaging with a bias thread at symmetrical positions about the center of rotation on each set of support members; A set of two yarn feeding shafts that are supported in a reciprocating manner between an operating position and a retracted position that cannot be engaged, each having a spiral yarn feeding portion and extending parallel to the width direction of the fabric; a drive mechanism that rotates the yarn feed shaft supported by the support member so that a plane including a rotation center of the support member is arranged at a position parallel to the width direction of the fabric and a position perpendicular to the width direction of the fabric; Set each pair of support members disposed on the frame at a position where the rotation centers of each support member coincide, and at a position where the rotation centers are offset by the distance from the rotation center to the yarn feed axis in the longitudinal direction of the fabric. a drive device that moves each of the thread feeding shafts between the working position and the retracted position; and a driving device that moves each of the thread feeding shafts to the working position and the retreating position, A yarn feed shaft drive mechanism is provided that drives the engaged bias yarn to rotate in synchronization with the direction in which the engaged bias yarn is moved toward the tip side of the yarn feed shaft.

[Operation] In the device of the present invention, first, the two yarn feed shafts supported by one set of support members and the one yarn feed shaft supported by the other set of support members are moved from opposite sides to each other. The upper and lower three shafts are placed in the operating position where they can engage the bias yarn, with the yarn feeding shaft supported by the other set of supporting members being positioned between the two yarn feeding shafts supported by the one set of supporting members. The operation starts from a state in which a plurality of bias yarns are arranged to protrude alternately in stages, and the same number of bias yarns are set and sorted at predetermined intervals in the yarn feeding section of the two upper yarn feeding shafts. In this state, the three thread feed shafts placed at the working position are rotated synchronously, and the engagement position of each thread that is engaged with the spiral thread feed section is directed toward the tip of the thread feed section. That is, the bias yarns are sequentially moved in the width direction of the fabric so that the bias yarns are arranged diagonally with respect to the longitudinal direction of the fabric. The bias yarns that engage with the yarn feeding portions of adjacent yarn feeding shafts are moved in opposite directions, and the upper and lower bias yarns are arranged so as to be inclined in opposite directions. The bias yarn that has come off the tip of the yarn feeding section of the upper yarn feeding shaft engages with the proximal end of the yarn feeding section of the lower yarn feeding shaft, and is moved to the tip of the yarn feeding section again. Then, when all the bias yarns that were engaged with the thread feeding parts of the upper and middle thread feeding shafts have moved to the thread feeding parts of the middle and lower thread feeding shafts, the rotation of each thread feeding shaft is stopped. Ru.

Next, the other set of support members is moved in the longitudinal direction of the fabric and arranged so that the centers of rotation of both sets of support members coincide,
In this state, the yarn feed shaft that had been placed in the upper operating position is moved to the retracted position, and the yarn feed shaft that had been supported by the other set of support members and placed in the retracted position is placed in the operational position. In this state, both sets of supporting members are rotated 90 degrees, and then one set of supporting members is moved in the longitudinal direction of the fabric, so that the thread feeding shaft that was in the middle row is moved to the upper row, and the thread feeding shaft that was in the lower row is moved to the upper row. is placed in the middle stage, and the yarn feed shaft, which has been newly placed in the working position, is placed in the lower stage. In this state, each yarn feed shaft is again rotated in a direction that moves the bias yarn toward the tip side of the yarn feed shaft, and the bias yarn is moved in the width direction of the fabric. Thereafter, these operations are repeated to continuously fold back the bias yarn with a predetermined width.

[Embodiment 1] Hereinafter, an embodiment in which the present invention is applied to an apparatus for weaving a five-axis three-dimensional fabric in which four-axis in-plane fabrics are connected in a vertical system y will be described with reference to FIGS. 1 to 16.

As shown in FIGS. 7 and 8, the apparatus for weaving this three-dimensional fabric includes a warp supply section consisting of warp beams L whose number corresponds to the number of rows of warp yarns Z, and a bias yarn beam whose number is half the number of bias yarn layers. The end portion of the multiple warp yarns Z let out from the warp yarn beam 1 and the end portion of the multiple bias yarns B let out from the bias yarn beam 2 are stopped. The direction in which the yarn supporting plate 3 to be weaved is taken up as the weaving progresses from a position close to the weaving frame 4 disposed at a predetermined position by the action of a drive mechanism (not shown) (Fig. 7.8) (to the left of). A warp thread shedding device 5 and a bias thread shedding device 6 are disposed behind the front frame 4 (on the right side in Fig. 7-8).

As shown in FIG. 9, the warp shedding device 5 has a pair of guide rods 7a fixed to a frame 7 having a width wider than the width of the three-dimensional fabric and a height greater than the thickness thereof at intervals that allow the warp threads 2 to pass through. It is moved up and down by a drive mechanism (not shown). Further, the bias yarn shedding device 6 is configured almost the same as the warp yarn shedding device 5, but the distance between the pair of guide rods 7a is set so that the bias yarn B does not come into contact with the guide rods 7a during the operation of the bias yarn feeding device, which will be described later. is set wider than in the case of the warp shedding device 5.

A vertical rapier 9 is disposed between the weaving frame 4 and the warp shedding device 5 and serves to insert the vertical yarn y fed out from the vertical supply section 8 into each row of the second group of warp yarns by its vertical movement. has been done. As shown in FIG. 10, the vertical rapier 9 is formed by inserting a plurality of pipes 9a into a support lO that is moved up and down by a drive mechanism (not shown), and the warp threads 2
A predetermined number of vertical systems y are inserted simultaneously into each column of the group. In front of warp beam 1 is warp beam l.
A guide plate 11 is provided to guide the warp threads Z and bias threads B that are let out from the bias thread beam 2, and the guide plate 11 has guide holes 11a for guiding one warp thread Z and one bias thread B respectively. It is formed at a position corresponding to the upper ends of the beam 1 and the bias yarn beam 2. A tension adjustment device 12 (shown only in FIG. 7) is provided between the guide plate II and the bias yarn beam 2 for each bias yarn B paid out from the bias yarn beam 2.

A warp guide 13 and a bias yarn moving device 14 are arranged behind both the shedding devices 5 and 6.

The warp guide 13 is arranged at a predetermined position 1 and is constituted by a rod having guide grooves formed at predetermined intervals on its surface. Further, the weft yarn X inserted between each row of the second group of warp yarns or between the rows of the second group of warp yarns and the layers of the bias yarn B is inserted into the weft yarn rapier 15 (FIG. 14(C)).

(shown in (e)) forms a loop at the tip and is inserted in a folded manner.

As shown in FIG. 1, the bias yarn moving device 14 has a pair of support frames 16 and 17 located on both sides of a group of bias yarns (not shown) that extend from the fabric front position to the bias yarn supply section. It is disposed so as to be able to reciprocate in the direction of the arrow in FIG. A plurality of bias thread feeding devices 18 and 19 are disposed on the support frame 16, 17, facing each other in pairs (one by one is shown). Since both bias thread feeding devices 18, 19 have the same configuration, one bias thread feeding device 18 will be described below. It should be noted that the members of both bias yarn feeding devices 18 and 19 that need to be distinguished are indicated by adding the suffix A to the members related to the bias yarn feeding device 18 and the suffix B to the members related to the bias yarn feeding device 19. As shown in FIGS. 2 and 3, a pair of disc-shaped support members 20A and 21A each having guide grooves 20a and 21a formed on their outer peripheral surfaces are supported by support members 2OA and 21A.
A guide groove 20a is provided in three bearings 22 that are fixedly arranged at positions where the angle with the center of the bearing is 120 degrees.

21a are in contact with the support members 20A, respectively.

It is rotatably supported around the center of 21A. A total of four guide rods 23 and 24, two on the upper and lower sides, are installed between the support members 2OA and 21A.
Two guide rods 2 each are installed parallel to the rotation axis of A.
3. On the 24, moving bodies 25A and 26A are attached to the guide rod 2.
3.24 and is slidably supported along the guide rod 23.24. Outside (bias thread B
The support member 2OA disposed on the far side) has a cylinder 27.2 at a position facing the movable bodies 25A, 26A.
8 are supported so as to extend in the same direction as the guide rods 23,24. Each moving body 25A26A connects the piston rod 27 of the cylinder 27°28 via a connecting member 29.
a, 28a, and is reciprocated along guide rods 23 and 24 by the operation of cylinders 27 and 28.

The movable bodies 25A, 26A have screw shafts 30A, 31A as thread feeding shafts having spiral grooves 30a, 31a serving as spiral thread feeding portions, and are rotatably supported at their base ends. A clutch 32 is fixed to be rotatable together with the screw shafts 30A, 31A at positions near the proximal moving bodies 25A, 2BA. Also, screw shaft 30A
, 31A is a bushing 3 fitted into a hole formed at a symmetrical position with respect to the support member 21A around its rotation center.
3, it can reciprocate between an operating position where it can engage with the bias thread B and a retracted position where it cannot engage with the movement of the movable bodies 25A and 26A. The cylinders 27, 28 constitute a drive device that moves the screw shafts 30A, 31A to the operating position and the retracted position.

Support member 2 placed on the inside (side closer to bias yarn B)
1A, a gear 34 is fixed to the distal end side of a screw shaft 30A passing through the support member 21A so as to be rotatable therewith. Further, on the opposite side of the support member 21A, a large gear 35 is disposed close to the support member 21A. The large gear 35 has internal teeth 35a and external teeth 35b.
The support member 21A is rotatably supported by four guides 38 fitted and fixed to the support member 21A. Clutch teeth 39 that mesh with the clutch 32 are integrally formed on the end surfaces of the small gears 36 and 37.

Bias thread feeding device 18゜19 configured as described above
A set of screw shafts 30A, 31A, 30B are installed on each bias thread feeding device 18, 19.

As shown in FIGS. 1 and 13, the actuators 31B are arranged in such a manner that they can be projected to the operating position from mutually opposite directions with a phase difference of 90 degrees. And bias yarn feed device 18.19
A plurality of sets of M1. It is designed to be driven by M2. That is, as shown in FIG. 6(a), a plurality of large gears 35 are arranged in a row in the vertical direction at equal intervals, and a plurality of guide pulleys 40 are arranged on the support shaft 4 in the same plane as each large gear 35.
It is rotatably supported by 1. Further, one driven pulley 42 is fitted to be able to rotate integrally with the rotating shaft 43, and the rotating shaft 4 is disposed on both the left and right support frames 16° 17.
3 are connected to each other via a universal joint 44 as shown in FIG. A large gear 35 is provided between the drive pulley 45 fitted to the drive shaft of the motor M1, each of the guide pulleys 40, the driven pulley 42, and each of the large gears 35.
A toothed belt 46 having external teeth that meshes with the external teeth 35b is hung. The clutch 32, the large gear 35, and the small gear 36
．． 37, guide pulley 40, driven pulley 42, rotating shaft 4
3. The screw shaft 30 is connected by the universal joint 44, the drive pulley 45, the toothed belt 46, and the motor M1.
A yarn feeding shaft drive mechanism is configured in which the yarn feed shafts A and 31A are driven to rotate in synchronization with the direction in which the bias yarns B engaged with the spiral grooves 30a and 31a are moved toward the distal ends of the screw shafts 30A and 31A. ing.

Further, as shown in FIG. 6(b), a plurality of gears 34 are arranged in a row in the vertical direction at equal intervals, and a plurality of guide pulleys 47 are provided in the same plane as each gear 34 and are rotatable by the support shaft 41. is supported by Further, one driven pulley 48 is fitted to be able to rotate integrally with respect to a rotating shaft 49, and the rotating shafts 49 disposed on both left and right support frames 16 and 17 are connected to a universal joint 50 as shown in FIG. are connected to each other via. A toothed belt 52 having external teeth is hung between the driving pulley 51 fitted on the drive shaft of the motor M2, the guide pulleys 47, the driven pulleys 48, and the gears 34. The gear 34, the guide pulley 47, the driven pulley 48, the rotating shaft 49, the universal joint 50,
The supporting member 2 is rotated by the toothed belt 52 and the motor M2.
OA, 20B at a position where a plane including the screw shafts 30A, 31A, 30B, 31B supported by each support member 2OA, 20B and the rotation center of the support members 2OA, 20B is perpendicular to a position parallel to the width direction of the fabric. A drive mechanism is configured to rotate the device so that it is located at.

Further, as shown in FIG. 1, both support frames 16.17 are located behind the support frames 16.17 (near the bias yarn supply section).
Opposing support members 2OA, 21A, 2 disposed at 17
The position where the rotational centers of 0B and 21B coincide and the rotational center are located in the longitudinal direction of the fabric from the rotational center to the screw shafts 30A and 30A.
1A, 30B.

A cylinder 53.54 as a drive device is fixed, and its piston rods 53a, 54a are connected to the support frame 16.17.

Next, the operation of the bias yarn moving device 14 configured as described above will be explained.

First, screw shafts 30A, 31A, 30B.

To explain the operation of 31B, screw shaft 30A
, 31A, 30B, and 31B are movable bodies 25A, 26A, and 25B by the operation of cylinders 27 and 28.

26B along the guide rods 23, 24 in the width direction of the fabric, and is placed into an active position where it can engage with the bias yarn B and a retracted position where it cannot engage. The screw shaft 30A is placed in the working position.

As shown in FIG. 3, 31A, 30B, and 31B are in a state where the clutch 32 meshes with the clutch teeth 39 integrally formed on the small gears 36 and 37. When the motor M1 is driven in this state, the large gears 35 are rotated in the same direction via the toothed belt 46, and the small gears 36 and 37 that mesh with the internal teeth 35a of the large gear 35 are rotated in the same direction. be done. and,
Screw shafts 30A, 31A, 3 via clutch 32
0B.

31B is rotated integrally with small gears 36 and 37.

Further, when the motor M2 is driven, each gear 34 is rotated 90 degrees in the same direction via the toothed belt 52, and the gears 34 are integrally fitted into the support member 20A.

20B is rotated integrally with the gear 34. Support member 2O
A, 21A, 20B, 21B are four guide rods 23
．． 24, so the support members 2OA and 20B
The support member 21A is integrated with the support member 21A.

21B is also rotated. That is, the rotation of the gear 34 causes the screw shafts 30A, 31A, and 30B to rotate.

31B are integrally rotated in the same direction, and the screw shafts 30A, 31A, 30B.

31B is the support member 2OA, 21A, 20B,
It revolves 90 degrees around the rotation center of 21B.

Next, the feeding operation of the bias yarn B by the bias yarn feeding device constructed as described above will be explained with reference to FIGS. 12 and 13. The movement of the bias yarn B in the lateral direction (width direction of the three-dimensional fabric) is performed by rotating the three screw shafts in the same direction with the three screw shafts arranged in the upper and lower stages at the operating position. As shown in FIGS. 12(a) and 13(a), the two screw shafts 30A and 31A of one bias yarn feeding device 18 are arranged vertically in the operating position, and the other bias yarn feeding device The two screw shafts 30B and 31B of the device 19 are horizontal, and one screw shaft 30B is the screw shaft 30A.

31A, and the other screw shaft 31B is located at the retracted position. And bias thread B
Screw shafts 30A, 30B, 31 arranged in three stages
Screw shafts 30A arranged in the upper and middle stages of A
, 30B are engaged with the spiral grooves 30a at a predetermined pitch P.

Each screw shaft 30 is placed in the working position from this state.
When A, 30B, and 31A are driven twice in the same direction, the bias thread B is engaged with the upper screw shaft 30A.
is the middle screw shaft 30B on the right side of Fig. 12(a).
The bias threads B that are engaged with each other are each moved one pitch P to the left in the figure. At this time, the bias yarn B that was engaged with the spiral groove 30a near the tip of the screw shaft 30B arranged in the middle stage is
The screw shaft 3 disengaged from the screw shaft 3 and placed in the lower stage
It is in a state of engagement with the spiral groove 31a near the proximal end of 1A. Also, the bias yarn B that was at the tip of the screw shaft 30A arranged in the upper stage is transferred to the base end of the middle screw shaft 30B, resulting in the state shown in FIG. 12(b). Thereafter, the screw shaft 30A is placed in the working position in the same manner.
.

When 30B and 31A are rotated and the bias yarn B is fed sequentially, the bias yarn B that is engaged with the middle screw shaft 30B in the state shown in FIG. 12(a)
are all transferred onto the screw shaft 31A arranged in the lower stage, and the bias yarn B which was engaged with the screw shaft 30A arranged in the upper stage is transferred onto the screw shaft 30B in the middle stage, as shown in FIG. The state shown in c) is reached.

When the bias thread B that engages with the screw shaft 30A disposed in the upper stage disappears, the screw shaft 30A is moved backward to the retracted position as shown in FIG. 12(d), and then the cylinder 54 is operated and the piston The rod 54a protrudes,
The support frame 17 on which the other bias thread feeding device 19 is disposed is moved forward. As a result, Fig. 13(b)
As shown in FIG. 3, the rotational centers of the support members 2OA and 20B of both bias yarn feeding devices 18 and 19 are aligned. In this state, the motor M2 is driven and each support member 2OA
, 20B are rotated 90 degrees in the same direction, and as shown in FIG. Screw shafts 30B, 31 of yarn feeding device 19
B are arranged at the top and bottom, respectively. Next, the cylinder 53 is actuated and the piston rod 53a is retracted, and the support frame 16 on which one of the bias yarn feeding devices 18 is disposed is moved rearward, and then the screw shaft 31B, which had been placed in the retracted position until then, is moved backward. is moved forward and placed in the working position.

As a result, as shown in FIG. 12(f) and FIG. 13(d), the two screw shafts 30B and 31B of the other bias yarn feeding device 19 are placed vertically in the working position, and the one bias One screw shaft 31A of the yarn feeding device 18 is placed in the working position between the screw shafts 30B and 31B, and the other screw shaft 30A is placed in the retracted position.

From this state, screw shafts 30B and 31A.

31B is rotated in the same direction as above, the bias thread B that engages with the screw shaft 31A arranged in the middle stage is sequentially 1
It is moved to the right one by one and is sequentially transferred onto the screw shaft 31B arranged in the lower stage. Further, the bias yarn B that is engaged with the screw shaft 30B arranged in the upper stage is moved to the left and is sequentially transferred onto the screw shaft 31A arranged in the middle stage. The screw shafts 30B and 31A are similarly placed in the operating position.

31B is rotated and the bias yarn B is sequentially fed horizontally, the bias yarn B that was engaged with the middle screw shaft 31A in the state shown in FIG. 12(f) is moved to the lower screw shaft. The bias threads B, which were all transferred onto the upper screw shaft 31B and engaged with the upper screw shaft 31B, are transferred onto the middle screw shaft 31A, resulting in the state shown in FIG. 12(h).

When the bias thread-B that engages with the screw shaft 30B arranged in the upper stage disappears, the screw shaft 30B becomes the twelfth thread.
After the cylinder 53 is moved backward to the retracted position as shown in FIG. . As a result, Fig. 13 (e
), the centers of rotation of the support members 2OA and 20B of both bias yarn feeding devices 18 and 19 are aligned. In this state, the motor M2 is driven and each support member 2O
A and 20B are rotated 90 degrees in the same direction, and as shown in FIG. 12 (D) and FIG. Screw shafts 30B, 31 of yarn feeding device 19
B are arranged horizontally. Next, the cylinder 54 is actuated and the piston rod 54a is retracted, and the support frame 17 on which the other bias yarn feeding device 19 is disposed is moved rearward, and then the screw shaft 30A that has been placed in the retracted position until then is moved. is moved forward and placed in the working position.

As a result, as shown in FIG. 12(k) and FIG. 13(g), the two screw shafts 31A and 30A of one bias thread feeding device 18 are arranged vertically in the working position, and the other bias The other screw shaft 31B of the yarn feeding device 19 is placed in the active position between the screw shafts 31A and 30A, and the one screw shaft 30B is placed in the retracted position.

Thereafter, the lateral feeding operation of the bias yarn B is sequentially performed in the same manner. Note that the path length of the bias yarn B between the guide plate 11 and the woven fabric varies greatly due to the crosswise feeding of the bias yarn B;
The tension of the bias yarn B is maintained substantially constant by the action of the tension adjustment device 12.

Next, the weaving procedure will be explained. At the start of weaving a three-dimensional fabric, the yarn support plate 3 is placed in a position close to the front frame 4, and the warp Z drawn out from the warp beam L and the bias yarn beam 2 is
The bias yarn B is set to be fixed to the yarn support plate 3 through the guide hole 11a1 of the guide plate 11, the warp guide 13 or the bias yarn moving device 14, and the warp yarn shedding device 5 or the bias yarn shedding device 6.

FIG. 14(a) shows a state in which weft insertion of the weft X of the fourth layer of the three-dimensional fabric F has been completed, and in this state, the vertical rapier 9 is placed in the raised position, the warp shedding device 5 and the bias Both thread shedding devices 6 are arranged in the lowered position.

When the bias yarn shedding device 6 is placed in the lowered position, the guide rod 7a of each bias yarn shedding device 6 is placed in a position where it does not engage with the bias yarn B inserted between the pair of guide rods a. In this state, the bias thread moving device 14 is driven as described above, and each bias thread B is moved by one pitch P in the width direction of the three-dimensional fabric. Next, as shown in FIG. 14(b), all the warp shedding devices 5
The bias thread shedding device 6 is placed in the raised position, and the vertical rapier 9 is moved downward to insert the vertical thread y between each row of warp threads Z. At this time, each pipe 9a of the vertical rapier 9 is inserted between the bias threads B at the rear of the intersection of the bias threads B arranged to intersect with each other, that is, near the bias thread intervening device 6, as shown in FIG. be done.

Next, the weft yarn X is inserted between the lowest warp Z and the vertical line y by the weft rapier 15. Since the vertical rapier 9 is away from the weaving front position, the vertical rapier 9 is not placed at right angles to the warp threads Z at the weaving front position by only the downward movement of the vertical rapier 9, but instead is separated from the weaving front position. However,
By inserting the weft yarns X into the lowest stage, the vertical system y is arranged to be orthogonal to the warp yarns Z at the cloth facing position, as shown in FIG. 14(c). Incidentally, before inserting the weft yarn X, beating may be performed to move the vertical system y toward the fabric front side.

Next, after the vertical rapier 9 is moved to the raised position and the vertical system y is folded upward, the warp thread shedding device 5 and the bias thread shedding device 6 are moved to the lowered position in order from the side farthest from the front frame 4. As a result, an opening is formed, and the weft X is inserted into the opening by the weft rapier 15. When the vertical rapier 9 is moved to the raised position, the first
As shown in Fig. 4(d), the vertical system y extending from the vertical rapier 9 to the woven fabric is arranged diagonally to the woven fabric, but as shown in Figs. 14(e) and 14(f), the vertical As the weft X is inserted by the rapier 15, it is sequentially arranged parallel to the woven fabric.

After the weft insertion of the weft yarns X into all rows is completed and the state shown in FIG. The state shown in FIG. 14(a) is reached. The same operation is repeated and the 15th
A three-dimensional fabric F having almost the same composition as the three-dimensional fabric F shown in Fig. 16 is woven. Three-dimensional fabric F shown in Figure 15.16
The difference is that there is one more row of warp threads 2.

As shown in Figure 15.16, the three-dimensional fabric F has multiple columns and multiple rows (4 columns and 3 rows in the figure) in parallel along its longitudinal direction.
A warp layer consisting of a large number of warp threads Z stretched over the warp thread 2;
A large number of continuous vertical threads y are woven perpendicularly to the warp threads Z between the rows and arranged in the thickness direction of the fabric.
The warp threads 2 are arranged so as to be folded continuously between each row of the warp threads 2 so as to be adjacent to each other in a plane parallel to the warp layer and symmetrically inclined with respect to the longitudinal direction and the width direction of the fabric.
It is composed of a set of bias yarn B layers and weft yarns X arranged in the width direction of the fabric between the warp layer and the bias yarn layer in a state perpendicular to the warp yarns 2. The vertical thread y is inserted from above the three-dimensional fabric F in a folded manner, forming a loop at its tip, and the weft X is inserted into the tip loop to prevent the tip loop from being pulled out. The weft yarn X also forms a loop at its tip and is inserted in a folded manner.

In Fig. 15, to clearly represent the structure of the three-dimensional fabric F, the warp Z, weft It becomes secret. In addition, when carbon fiber roving is used as a roving, the weft X and vertical thread y, which form a loop at the tip and are inserted in a folded manner, overlap into one after weaving, as shown in Figure 16. It becomes like this.

This three-dimensional fabric F is used as a composite material impregnated with resin, etc., and due to the presence of bias threads arranged in a direction inclined to the longitudinal direction of the fabric, a conventional triaxial three-dimensional fabric can be used as a skeleton material. The amount of deformation due to diagonal force is reduced compared to the case where the Moreover, since each set of two bias yarn layers has a structure in which a large number of bias yarns B are continuously folded back, when made into a composite material, it has high rigidity and strength against tension, bending, and other loads. improves.

Note that the present invention is not limited to the above embodiments,
For example, the screw shaft 30A of the bias yarn moving device 14
, 31A, 30B, and 31B, a spirally formed rod 55 as shown in FIG. 17 may be used,
The spiral grooves 30a, 31a of the screw shafts 30A, 31A and the screw shafts 30B, 31B arranged to face each other may have the same orientation and may have opposite rotation directions. Further, a tension adjustment device 12 is provided between the bias yarn beam 2 corresponding to each bias yarn B and the guide plate ll.
Instead of providing a bias thread B, the structure is such that the bias thread B is fed out one by one from an independent bobbin, and fluctuations in thread tension that occur in the bias thread B in response to the operation of the bias thread feeding device 18 and 19 are controlled by the rotation of the bobbin. It may be configured so that it is absorbed by Also, the screw shafts 30A and 31A of the bias yarn feeding devices 18 and 19 are arranged on both the left and right sides.

Instead of using one motor as a drive source for rotation and revolution of 30B and 31B, a separate drive motor may be provided for each bias thread feeding device 18, 19. Furthermore, it may be applied to cross-feeding of bias yarns other than weaving three-dimensional fabrics.

[Effects of the Invention] As detailed above, in the device of the present invention, the movement of a large number of arranged bias yarns in the width direction of the fabric is carried out using a pair of yarn feeding shafts each having a spiral yarn feeding section. This can be easily done by using a set of four yarn feed shafts that are combined in a state that faces each other, so by arranging a set of four yarn feed shafts in multiple stages, it is easy to weave multi-layered thick three-dimensional fabrics. It becomes possible to do so. Further, due to the action of the yarn feeding shaft arranged between the bias yarn supplying section in which a large number of yarns are arranged and the woven fabric,
The bias thread only has a meandering thread path, and the bias thread supply section only needs to supply the bias thread, so it is possible to use a large bobbin creel, yarn beam, etc. as the bias thread supply section, and it is possible to continuously handle a large amount of thread. Bias yarn can be sent out, allowing continuous production of textiles.

[Brief explanation of the drawing]

1 to 16 show an embodiment embodying the present invention, in which FIG. 1 is a schematic perspective view of a bias yarn moving device;
Fig. 2 is a cross-sectional view showing the supporting member and screw shaft in a supported state, Fig. 3 is a cross-sectional view of the main part, and Fig. 4 is a -IV of Fig. 2.
Figure 6 (a) is a schematic diagram showing the drive mechanism of the large gear, and Figure 6 (b) is a schematic diagram showing the drive mechanism of the large gear. 7 is a schematic side sectional view showing the weaving state of the three-dimensional fabric, FIG. 8 is the same (schematic plan view, FIG. 9 is a schematic perspective view of the shedding device, and FIG.
The figure is a schematic perspective view of a vertical rapier, FIG. 11 is a schematic perspective view showing the state of engagement between the bias thread and the screw shaft, and FIG.
Figures (a) to (k) are schematic cross-sectional views showing the action of the bias yarn feeding device, and Figures 13 (a) to (g) are cut at positions corresponding to line A-A in Figure 12 (a). 14(a) to (f) are schematic side views showing the weaving action; FIG. 15 is a partially cutaway schematic perspective view of a three-dimensional fabric; FIG. 16 17 is a partially cutaway view of a three-dimensional fabric, and FIG. 17 is a schematic perspective view of a yarn feed shaft in a modified example. A bias yarn beam 2, a front frame 4, a bias yarn shedding device 6, and a bias yarn moving device 14 constitute a bias yarn supply section.
, support frame 16.17, bias yarn feeding device 18.
19. Support member 20A. 21A, 20B, 20B, cylinder 2 as drive device
7.28, Screw shafts 30A and 31 as yarn feeding shafts
A, 30B, 31B, spiral groove 30a as a yarn feeding section,
31a, a gear 34 constituting a drive mechanism; Toothed belt 52
．． Motor M2, large gear 35 that constitutes the yarn feed shaft drive mechanism
．． Small gear 36°37, clutch 32. Clutch tooth 39.
Toothed belt 46. Motor Ml, cylinder 53.54 as a drive device, vertical system y1 weft x1 warp 2, bias thread B, three-dimensional fabric F0 Patent applicant: Toyota Industries Corporation Seisakusho, agent: Patent attorney: Hironobu Onda (and one other person) Figure 3 Figure 6 (b)

Claims (1)

[Scope of Claims] 1. The bias threads are arranged rotatably in a plane perpendicular to the width direction of the fabric with respect to support frames arranged on both sides of the bias thread group extending from the front position to the bias thread supply section. a set of support members; and a reciprocating motion on each set of support members that is rotatable on its own axis at symmetrical positions about the center of rotation and between an operating position where it can engage with the bias thread and a retracted position where it cannot engage. A set of two yarn feeding shafts each having a spiral yarn feeding portion and extending parallel to the width direction of the fabric; a drive mechanism for rotating each pair of support members disposed on both support frames so that a plane including the center of rotation is arranged at a position parallel to the width direction of the fabric and a position perpendicular to the width direction of the fabric; a drive device that moves each support member between a position where the rotational centers coincide with each other and a position where the rotational center is shifted in the longitudinal direction of the fabric by a distance from the rotational center to the yarn feeding axis; a drive device for moving the yarn between the operating position and the retracted position; and a drive device for moving the bias yarn to be engaged with the helical yarn feeding portion to the tip side of the yarn feeding shaft with each of the yarn feeding shafts being placed in the acting position. A bias yarn moving device provided with a yarn feed shaft drive mechanism that is driven to rotate in synchronization with the direction in which the yarn is moved.