JP3422295B2 - 3D loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional loom for weaving a multiaxial three-dimensional fabric.

[0002]

2. Description of the Related Art As shown in FIG. 4, a five-axis three-dimensional fabric 30 woven using reinforcing fibers (aramid, carbon, glass, etc.) used in a composite material is a weft yarn 31 and a weft yarn 3.
The warp yarns 32 orthogonal to 1 and the vertical yarns 33 extending in the thickness direction of the fabric, and the weft yarns 31 and the warp yarns 32 are approximately ± 4.
It is formed by weaving bias yarns 34 and 35 that are inclined by 5 °.

As shown in FIG. 5, this 5-axis three-dimensional fabric 3
The 5-axis three-dimensional loom 36 that weaves 0
2, a vertical yarn 33, a bias yarn 34, 35, and the like, each of the yarns 2 is wound up and fed to the yarn feeding portion 3
7, a yarn feeding orientation portion 38 for giving a predetermined feed angle to the yarn 2, and a cloth fell portion 39 for weaving the yarns 2 together.

The yarn supplying section 37 has a plurality of beams 40,
Weft 31, warp 32, vertical yarn 33 and bias yarn 34,
35 are previously wound on separate beams 40.

The beam 40 is adapted to be rotated in a direction in which the yarn is unwound by a motor, and a weight 41 is hung from each yarn 2 unwound from the beam 40.
Tension is applied to the thread 2.

Further, the yarn supplying and orienting portion 38 is provided with the bias yarn 3
Bias yarn orienting device 42 for operating 4, 35,
A vertical thread insertion device 43 for inserting the vertical thread 33 into the woven fabric. The bias yarn orientation device 42 has a large number of guide pieces 44 that are movable in the width direction of the fabric. The guide pieces 44 guide the bias threads 34 and 35, respectively.
The guide piece 44 is moved in the width direction of the woven fabric while guiding 5, and the bias yarns 34 and 35 are inclined and sent to the cloth fell 39.

[0007]

In the guide piece 44 of the bias yarn orienting device 42, the amount of slack of the bias yarns 34 and 35 to be guided differs depending on its position, and the vertical yarn 33 is woven during weaving. When the fluff and the lump of the fluff (not shown) were woven, the thickness of the woven fabric was slightly changed, and the lengths of the vertical yarns 33 consumed were different from each other. Therefore, the same bias yarns 34 and 35
Alternatively, there is a problem in that there is a difference in the yarn length to be unwound even between the vertical yarns 33, which causes a problem in the yarn feeding.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a three-dimensional loom which can smoothly feed yarns even if the yarn length to be unwound differs for each yarn.

[0009]

In order to achieve the above object, the present invention provides a three-dimensional woven fabric in which a weft yarn, a warp yarn, a vertical yarn, and the like are unwound from a reel to weave a multiaxial three-dimensional woven fabric. In a loom, a weft thread provided so as to co-rotate with a rotating shaft by friction,
Store warp threads, vertical threads, etc. independently,
One, multiple reels that rotate independently of each other, and the above rotation
It is connected to the shaft and gives the reel a rotational driving force in the yarn feeding direction.
And a reel driving means that is releasably engaged with the reel.
A plurality of latches that individually regulate the rotation of the reel and the above
Of each thread unwound from the reel
The slack is formed while applying the tension, and it exceeds the predetermined height.
Hit the latch that engages the reel of thread when it rises
Therefore, a weight for detaching the latch from the reel is provided. As a result, the yarns can be smoothly and stably delivered even if the yarns are fed in different amounts.

Also, the reel hooks the latch claws.
It is preferable that the claw receivers for kicking are formed at equal intervals on the outer circumference .

The weight is hung on the thread.
It is advisable to have a movable pulley for this purpose .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a five-axis three-dimensional loom as an example of the three-dimensional loom. As shown in the figure, the three-dimensional loom 1 supplies yarns 2 such as warp yarns, weft yarns, vertical yarns and bias yarns. It has a supply part 3, a yarn supply orientation part 4 for giving a predetermined supply angle to the yarn 2, and a cloth fell part 5 for weaving the respective yarns 2 together.

The yarn supplying section 3 comprises a plurality of yarn feeding control means 6.

The yarn feed control means 6 includes weft yarns, warp yarns,
It is prepared for each thread type such as vertical thread and bias thread. The yarn feed control unit 6 accommodates the yarns 2 independently and also has a beam 8 having a plurality of reels 7 that rotate independently of each other, and a reel drive that gives the reels 7 a rotational driving force in the yarn feeding direction. The means 9, the weight 10 suspended from each of the yarns 2 unwound from the beam 8 to apply tension to the yarns 2 and to form slack, the rotation of the reel 7 and the slack length of the yarns 2 are controlled. Reel braking means 11 for permitting rotation of the reel 7 when the length becomes equal to or less than a predetermined length.
Consists of.

As shown in FIGS. 2 and 3, the beam 8 is
A rotating shaft 1 which is connected to a reel driving means 9 and is rotationally driven.
2 and a reel 7 rotatably attached to the rotary shaft 12.
Consists of.

Each of the reels 7 is adapted to wind one thread 2, and a plurality of the threads are arranged in the axial direction of the rotary shaft 12. When the reel 7 rotates with respect to the rotating shaft 12, the reel 7 is in contact with the rotating shaft 12 so as to receive an appropriate frictional force from the rotating shaft 12. It is designed to be rotated.

Further, on the outer periphery of the reel 7, there are pawl receivers 15 for engaging pawls 14 of a latch 13 described later at equal intervals.
Is formed. The claw receiver 15 is formed by forming a dent on the outer periphery of the reel 7 so as to be recessed radially inward, and has an introducing portion 16 that is inclined so as to widen the mouth of the claw receiver 15 on the front side in the rotation direction during thread feeding. At the same time, it has a locking portion 17 that is cut inward in the radial direction so as to engage and stop the claw 14 of the latch 13 on the rear side in the same rotation direction.

The reel drive means 9 is specifically an electric motor. The reel driving means 9 is connected to the rotating shaft 12 of the beam 8 via a speed reducer (not shown) so as to rotate the rotating shaft 12 slowly.

On the downstream side of the reel 7, a pair of rollers 18 and 19 for guiding the yarn 2 are provided in parallel. The rollers 18 and 19 are respectively provided in parallel with the beam 8 and collectively guide the yarn 2 unwound from the beam 8. The first roller 18 close to the reel 7 and the second roller 19 located on the downstream side of the first roller 18 are arranged slightly apart from each other, and the yarn 2 between the first roller 18 and the second roller 19 is disposed. The weight 10 is hung.

The weight 10 has a movable pulley 20 for hanging the thread 2 on the upper portion thereof, and while applying tension to the thread 2,
It does not damage the yarn 2 by traveling on the yarn 2. At the upper end of the weight 10, a push-up portion 21 for hitting a latch 13 described later and moving the latch 13 is formed. When the thread 2 is consumed and the weight 10 rises to a predetermined height or higher, the push-up portion 21 is pushed up. The part 21 is applied.

The reel braking means 11 is engaged with the reel 7 to restrict the rotation of the reel 7, and when the weight 10 rises above a predetermined height, hits the push-up portion 21 of the weight 10 and is removed from the reel 7. It consists of a latch 13.

The latch 13 is rotatably provided on a support shaft 22 provided below the first roller 18 in parallel with the first roller 18, and a boss portion rotatably inserted into the support shaft 22. 23, a locking arm portion 24 extending from the boss portion 23 to the reel 7 side, and a passive arm portion 25 extending from the boss portion 23 to above the weight 10.

The locking arm portion 24 is specifically the reel 7
Is formed to have a width substantially the same as that of, and is formed to extend obliquely downward from the boss portion 23. A pawl 14 for hooking on a pawl receiver 15 of the reel 7 is formed at the tip of the locking arm portion 24. The claw 14 is formed so as to extend obliquely upward so as to face the rotating shaft 12 of the beam 8.

The passive arm portion 25 is formed so as to extend substantially horizontally from the boss portion 23, and the yarn 2 from the first roller 18 to the weight 10 and the weight 10 to the second roller 1 are provided.
The thread 2 directed to 9 is inserted inside.

The boss portion 23 is formed to be wider (longer in the axial direction) than the locking arm portion 24 and the passive arm portion 25, and the adjacent locking arm portions 24 and 24 or the passive arm portions 25 and 25 are adjacent to each other. They do not hit each other.

Further, the latch 13 has a claw 14 of the latch 13.
The latch 1 so that it is pressed against the claw receiver 15 side of the reel 7.
A spring 26 for elastically urging 3 is provided, and the pawl 14 is always arranged along the outer circumference of the reel 7 except when the passive arm 25 is pushed up by the weight 10.

Next, the operation will be described.

When weaving is started and the reel driving means 9 is driven, the rotary shaft 12 is rotationally driven. At this time, all reels 7 are prevented from rotating by the latch 13 and do not rotate together with the rotating shaft 12. Further, since the weight 10 is suspended from each yarn 2 and an appropriate tension is applied, the yarn 2 can be stretched straight, and particularly high strength can be obtained by the reinforcing fiber.

As the weaving progresses and the yarn 2 extending from each reel 7 is consumed, the first roller 18 and the second roller 1
The thread 2 hung between 9 rises together with the weight 10 according to the respective thread consumption.

When any one of the weights 10 is lifted to a predetermined height or more, the push-up portion 2 of the weight 10 is pushed up.
1 hits the passive arm portion 25 of the corresponding latch 13 and pushes up the passive arm portion 25. Latch 13 is spindle 22
The locking arm portion 24 is rotated in the direction of separating the reel 7 from the reel 7, and the claw 14 is separated from the claw receiver 15 of the reel 7.

As a result, the reel 7 is released from the locked state and starts to rotate together with the rotary shaft 12. The yarn 2 unwound along with the rotation of the reel 7 lowers the weight 10 suspended on the yarn 2. The weight 10 is separated from the latch 13, and the latch 13 is rotated in the direction in which the passive arm portion 25 is lowered by the urging force of the spring 26.

The claw 14 of the latch 13 is brought into contact with the outer circumference of the reel 7. When the reel 7 is rotated about 90 °, the latch 1
The third claw 14 is another claw receiver 1 formed on the outer circumference of the reel 7.
5, the reel 7 is locked and the rotation is stopped.

When the thread 2 is consumed, the weight 10
Is lifted, the latch 13 is released from the reel 7 when the weight 10 exceeds a predetermined height, and the yarn 2 having a predetermined length is unwound from the reel 7, and a series of operations is repeated for each yarn 2.

As described above, the three-dimensional loom 1 is provided with the yarn feeding control means 6 for independently feeding the yarns 2 such as weft yarns, warp yarns, vertical yarns and bias yarns.
Even if the unwound yarn length differs for each yarn 2, smooth yarn feeding can be continued.

Further, the yarn feeding control means 6 is provided with a beam 8 having a plurality of reels 7 for accommodating the yarns 2 independently of each other and rotating independently of each other, and rotational driving of the reels 7 in the yarn feeding direction. A reel driving means 9 for applying a force, a weight 10 that is hung on each yarn 2 unwound from the beam 8 to apply tension to the yarn 2 and form slack.
Since the reel 7 is provided with the reel braking means 11 that restricts the rotation of the reel 7 and allows the rotation of the reel 7 when the slack length of the yarn 2 becomes equal to or less than a predetermined length, It is possible to reliably and stably continue supplying yarns of different amounts.

Then, the reel braking means 11 is connected to the reel 7
Since the rotation of the reel 7 is restricted by being engaged with the latch 7, and the latch 13 is detached from the reel 7 by hitting the weight 10 when the weight 10 rises above a predetermined height, the latch 13 can be easily structured. It is possible to regulate the rotation of the reel 7 and allow the rotation of the reel 7 when the slack length of the yarn 2 becomes equal to or less than a predetermined length.

Further, since the rotating shaft 12 is forcibly rotated by the reel driving means 9, the reel 7 unlocked by the latch 13 can be reliably rotated at a good feed speed.

Although the spring 26 is provided in the latch 13 and the pawl 14 is pressed against the reel 7 by the elastic biasing force of the spring 26 in the above-described embodiment, the present invention is not limited to this, and the passive arm portion 25 may be used. Locking arm 24
The hook 14 may be pressed against the reel 7 by adjusting the balance by making it heavier or longer than that in FIG.

[0040]

In summary, the present invention has the following excellent effects.

(1) Even if the unwound yarn length differs for each yarn, smooth yarn feeding can be continued.

(2) It is possible to reliably and stably continue the yarn feeding, which consumes different amount for each yarn.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of a three-dimensional loom showing a preferred embodiment of the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

3 is a sectional view taken along the line III-III of FIG.

FIG. 4 is a schematic perspective view of a 5-axis three-dimensional fabric.

FIG. 5 is a schematic side view of a 5-axis three-dimensional loom.

[Explanation of symbols]

1 three-dimensional loom 2 threads 6 Thread feed control means 7 reel 8 beams 9 reel drive means 10 weights 11 Reel braking means 13 Latch

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-10-325043 (JP, A) JP-A-47-23775 (JP, A) JP-A-58-144054 (JP, A) Actual development Sho-53- 83781 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D03D 41/00

Claims (3)

(57) [Claims] [Claim 1] weft, warp, vertical yarns and each Lee
In a three-dimensional loom that unwinds from a reel and weaves a multi-axis three-dimensional woven fabric,
Threads such as threads, warp threads, and vertical threads are stored independently,
And a plurality of members that rotate independently of each other with respect to the rotation axis
To the reel and the reel connected to the rotary shaft
And a reel drive means for applying a rotational drive force in the same direction,
Is engaged with and disengaged from the reel to individually regulate the rotation of the reel.
A number of latches and each thread unwound from the reel
Hangs on the thread and forms slack as well.
And the reel of the yarn is
Release the latch from the reel by hitting the engaging latch
A three-dimensional loom, which is provided with a weight that allows it. 2. The reel hooks the claw of the latch.
The three-dimensional loom according to claim 1, wherein claw receivers for forming are formed at equal intervals on the outer circumference . 3. The weight is a motion for hanging on the thread.
The three-dimensional loom according to claim 1 or 2 , further comprising a pulley .