JPH06341034A - Production of carbon fiber woven fabric by water jet loom and its device - Google Patents

Abstract

PURPOSE:To make it possible to continuously operate by solving fuzz blocking of weft yarns at a needle point and problems caused by fuzz developing from warp yarns in high speed weaving in case of weaving carbon fiber woven fabric easy to generate fuzz by using a water jet loom. CONSTITUTION:In a method and a device in which a warp yarn sheet 11 is moved to open and close to store a pick of weft yarn 2 containing carbon fibers in a stock unit 7 and the weft yarn 2 is fed into the warp yarn sheet 11 by carrying it with jet water jetted from a nozzle 14 of a water jet loom, the carbon fiber is produced by supplying the weft yarn into a running pass for the weft yarn between a bobbin 1, around which the weft yarn 2 is wound, and a needle inlet point 15 of the nozzle 14. The device therefor is also provided. A method for fixing each of heddles to an optimum position in the direction of warp yarn arrangement and its device are also claimed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a carbon fiber woven fabric and an apparatus therefor, and more particularly to a method for producing a carbon fiber woven fabric by a water jet loom and an apparatus therefor.

[0002]

2. Description of the Related Art As soon as industrial production of carbon fiber begins,
Carbon fibers are also processed into woven fabrics, which have become established as intermediate base materials for advanced composite materials and are used in sports and leisure equipment, aircraft components, and the like. Since carbon fibers have a large specific elastic modulus (Young's modulus) and a large specific strength, they are often used by being compounded with a resin and molded into carbon fiber reinforced plastics (CFRP). CFRP has begun to be used for aircraft structural materials by taking advantage of its excellent performance, but in order to further expand the range of application of CFRP, not only the cost reduction of carbon fiber itself, but also intermediate materials such as textiles Cost reduction of the base material and molding process has become a major issue.

On the other hand, regarding the weaving characteristics, the carbon fiber is excellent in mechanical properties as described above, has a large elastic modulus, and has a characteristic that a large tension is generated even with a slight elongation. Not a fiber that is easy to weave. Further, the carbon fiber has a single fiber diameter of 5 to 15 microns, which is smaller than ordinary natural fibers and synthetic fibers, and has a breaking elongation of 1.5% to 2.5% and a knot strength of small. It is difficult to avoid weaving in the weaving process, and it is a fiber that is difficult to weave.

For this reason, the carbon fiber is woven by a shuttle loom or a rapier loom, for example, as described in JP-A-63-315638, while paying attention to generation of fluff and yarn breakage. There is. However, the shuttle loom and the rapier loom have a problem that the weaving speed of the shuttle loom is kept low at about 80 to 200 picks per minute due to the weaving mechanism, resulting in poor production efficiency.

On the other hand, as a loom capable of high-speed weaving, there is known a loom using a water jet loom in which a weft yarn is hung on jet water to fly. However, as a result of inserting the carbon fiber wefts between the warp sheets with this loom, weaving was possible at high speed for a short time, but since the carbon fibers are brittle, wefts running at high speed rub against various guides. As a result, fluff was generated, and in a blink of an eye, the needle of the nozzle of the water jet loom was clogged with fluff and the filler sensed a miss flight of the weft thread and stopped.

When weaving a carbon fiber woven fabric,
Due to the vertical movement of the heddle and the rocking motion of the reed due to high-speed operation, fluff is generated due to the rubbing between the carbon fiber yarn and the heddle, the reed, and the fabric quality is degraded, and at the same time, the fluff attached to the reed and the warp. However, when the weft was flying, it fell off and hit the weft,
While the weft is flying over the entire width of the woven fabric, it comes into contact with the warp sheet and becomes a woven fabric defect. In addition, since the fluff accumulated on the reed is clogged and the warp is cut off, the fluff accumulated on the reed must be cleaned after weaving a woven fabric of about 100 m, which is a very inefficient problem. Therefore, although the weaving speed is high, the loom is frequently stopped and the weaving cannot be efficiently performed as a whole.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problem of weft thread clogging at the needle portion of a nozzle when weaving a carbon fiber woven fabric that tends to generate fluff using a water jet loom. It is to provide a method for manufacturing a carbon fiber woven fabric and an apparatus for the same, which enables continuous operation.

Another object of the present invention is to solve the above-mentioned problems that occur from the warp side when weaving carbon fiber at high speed in a water jet loom, and to eliminate the fluff and yarn breakage of carbon fiber and to achieve high speed. An object of the present invention is to provide a manufacturing method and an apparatus therefor, which makes it possible to obtain a high-quality carbon fiber woven fabric at low cost, which makes it possible to weave carbon fibers.

[0009]

In order to achieve the above object, a method of manufacturing a carbon fiber woven fabric by a water jet loom according to claim 1 of the present invention includes a carbon fiber by opening and closing a warp sheet. A weft is wound in a method for manufacturing a carbon fiber fabric in which wefts are stored in a storage portion for one pick, and the wefts are placed between jets of water jet loom when the warp sheets are opened to drive the wefts between the warp sheets. The method is characterized in that the weft is driven while blocking the spray of water jet from the nozzle in the weft traveling path from the bobbin to the needle inlet of the nozzle.

According to a second aspect of the present invention, in the method for producing a carbon fiber woven fabric by a water jet loom, the warp sheet is opened and closed, and wefts containing carbon fibers are stored in a storage portion for one pick. In a method of manufacturing a carbon fiber woven fabric in which weft yarns are jetted between jets of water jet loom when the warp sheet is opened, the weft yarns between the bobbin wound with the weft yarns and the needle inlet portion of the nozzle. The weft yarn is driven while at least the reservoir portion of the traveling path and the needle inlet portion of the nozzle are sucked by fluff attached to the weft yarn by air suction.

According to a third aspect of the present invention, in the method for producing a carbon fiber woven fabric by a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In the method for manufacturing a carbon fiber woven fabric in which the weft yarn is driven between the warp sheets by being put on the water jetted from the nozzle of the water jet loom when the warp sheet is opened, the driving of the weft yarn for one pick is completed,
While the weft equivalent to the next one pick is stored in the storage part, the weft is slackened along the tube wall of the needle inlet part of the nozzle and brought into contact with the fluff adhering to the tube wall. When the weft is driven, the fluff is driven together with the weft.

According to a fourth aspect of the present invention, in the method for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In a method for producing a carbon fiber woven fabric in which weft yarns are jetted between the warp sheets by being put on water jetted from a nozzle of a water jet room when the warp sheet is opened, (a) from a bobbin wound with the weft yarns to a needle inlet portion of the nozzle. (B) At least the reservoir portion and the needle inlet of the nozzle of the weft traveling path between the bobbin on which the weft is wound and the needle inlet of the nozzle. While sucking the fluff attached to the weft yarn with the air suction unit, (c) the weft yarn for one pick is driven in and the While the weft equivalent to the next one pick is stored, the weft is slackened along the tube wall at the needle inlet of the nozzle and brought into contact with the fluff adhering to the tube wall. The method is characterized in that the fluff that has been sucked by the air suction and that cannot be sucked is driven together with the weft during the next driving.

According to a fifth aspect of the present invention, in the method for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is moved to open and close so that the jet water jetted from the nozzle of the water jet loom when the warp sheet is opened. In the method for manufacturing a carbon fiber woven fabric in which wefts are placed and driven between warp sheets, the position of each heddle that guides each warp is fixed in the warp arrangement direction, and the warp from each heddle is formed between the reeds. The method is characterized in that the eye is passed through substantially the center of the warp arrangement direction.

Here, the weft driving speed in the water jet loom is preferably 250 picks / minute to 800 picks / minute.

According to a seventh aspect of the present invention, in the apparatus for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In a manufacturing apparatus for a carbon fiber woven fabric, in which wefts are put on jetting water jetted from a nozzle of a water jet loom when a warp sheet is opened, and a weft is driven between the warp sheets, a bobbin in which the weft is wound on a jetting side of the water jet loom From the nozzle to the needle inlet portion of the nozzle, a means for blocking the scattering of the jet water to the weft traveling path is provided.

According to an eighth aspect of the present invention, in the apparatus for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In a carbon fiber woven fabric manufacturing device in which a weft yarn is placed between jets of water jetted from the nozzle of the water jet loom when the warp sheet is opened, the weft yarn between the bobbin wound with the weft yarn and the needle inlet of the nozzle. Air suction means for sucking the fluff adhering to the weft yarn is provided between at least the reservoir portion and the needle inlet portion of the nozzle in the traveling path.

According to a ninth aspect of the present invention, in the apparatus for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In a carbon fiber woven fabric manufacturing apparatus in which a weft yarn is driven between sprayed water jetted from a nozzle of a water jet loom at the time of opening a warp sheet, a weft yarn equivalent to one pick is finished,
It is characterized in that a means for slackening the weft along the pipe wall of the needle inlet portion of the nozzle is provided while the weft equivalent to the next one pick is stored in the storage portion.

According to a tenth aspect of the present invention, in the apparatus for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick. In a manufacturing apparatus for a carbon fiber woven fabric, in which weft is placed on jet water jetted from a nozzle of a water jet loom when a warp sheet is opened and a weft yarn is driven between the warp sheets, (a) the weft yarn is wound on a jet water jet side of the water jet loom. (B) Weft provided between the bobbin wound around the bobbin and the needle inlet of the nozzle. The fluff attached to the weft yarn is sucked between at least the reservoir portion and the needle inlet portion of the nozzle of the traveling path, and 1
After the wefts equivalent to the pick have been driven in, the next 1
An air suction means is provided for slackening the weft along the pipe wall at the needle inlet of the nozzle while storing the weft corresponding to the pick.

According to the eleventh aspect of the present invention, in the apparatus for producing a carbon fiber woven fabric using a water jet loom, the warp sheet is opened / closed so that the jet water jetted from the nozzle of the water jet loom is opened when the warp sheet is opened. In a carbon fiber woven fabric manufacturing apparatus in which wefts are placed and driven between warp sheets, the position of each heddle that guides each warp in the warp arrangement direction, the warp from each heddle, the reeds formed between each reed , Which is fixed so as to pass through a substantially central portion in the warp yarn arranging direction.

In the inventions according to claims 1 to 4 and 7 to 10, fibers containing carbon fibers are used as at least wefts. The warp may be the same carbon fiber as the weft, or may have a high elastic modulus such as glass fiber or polyaramid fiber, high strength reinforcing fiber, polyamide fiber, polyester fiber, vinylon fiber, polyethylene fiber, PEEK (polyether). Etherketone) fiber,
It may be a synthetic fiber such as polyamide fiber, PPS (polyphenylene sulfide) fiber, ABS fiber or polypropylene fiber. The carbon fiber may be multifilament yarn or spun yarn.

The inventions according to claims 5 and 6 and claim 11 are directed to a method and an apparatus using a fiber containing carbon fiber as at least a warp. The weft may be the same carbon fiber as the warp, or may have a high elastic modulus such as glass fiber or polyaramid fiber, high strength reinforcing fiber, polyamide fiber, polyester fiber, vinylon fiber, polyethylene fiber, PEEK (polyether). It may be a synthetic fiber such as ether ketone) fiber, polyamide fiber, PPS (polyphenylene sulfide) fiber, ABS fiber or polypropylene fiber. Carbon fiber
It may be multifilament yarn or spun yarn.

When the carbon fiber is a multifilament yarn, it is preferable that the diameter of the single fiber is about 5 to 13 μm, and the weaving property can be further improved.
It is preferable to use one having a twist of about 25 times / m. Further, in the case of a spun yarn, a yarn having a twist of about 100 to 600 turns / m is preferable in order to develop strength by friction and tightening. In addition, carbon fiber yarn is P
It may be made of any carbon fiber such as AN (polyacrylonitrile) type and pitch type, but CFRP
When weaving a woven fabric to be used in (carbon fiber reinforced plastic), in order to improve the adhesiveness with the resin that serves as the matrix, the one in which a functional group is introduced on the surface by electrolytic oxidation treatment or the like is used. Is preferred.

However, the carbon fiber does not have to be composed of only carbon fiber. Depending on the application, the one used in CFRP is a combination of carbon fiber and other high-strength, high-modulus reinforcing fibers (aramid fiber, glass fiber, silicone carbide fiber, alumina fiber, etc.). May be, carbon fiber and PEEK
It may be used in combination with (polyether ether ketone) fiber, polyamide fiber, PPS fiber, ABS fiber and the like. In the present invention, a yarn obtained by using these reinforcing fibers and thermoplastic fibers in combination is also included in the concept of carbon fiber yarn.

The weft carbon fiber yarn used in the present invention has a thickness of about 300 denier to 4,000 denier (denier: yarn weight per 9,000 m of yarn length). Since the knot strength of the carbon fiber is small, if the denier is 300 denier or less, the carbon fiber yarn may be cut when the weft yarn bends in the storage portion or when the weft yarn clamper is closed.
Further, when the weight is more than 4,000 denier, the yarn becomes heavy, so that the weft yarn of the carbon fiber cannot be completely blown off by the jet water, and the weft yarn may come into contact with the warp sheet in the opening in the middle to cause a fabric defect. The thickness of the carbon fiber yarn of the warp used in the present invention is about 300 denier to 8,000 denier (denier: yarn weight per 9,000 m of yarn length).

From the viewpoint of suppressing the generation of fluff during the process, it is preferable to add about 0.4 to 1.5% by weight of a sizing agent to the carbon fiber yarn. Since the tensile modulus of the carbon fiber is large, it is not preferable that the amount of the sizing agent attached is too large because the carbon fiber becomes hard and becomes wire-like. The sizing agent is preferably an epoxy resin type sizing agent from the viewpoint that the woven fabric can be directly subjected to molding without any post-treatment such as refining.

[0026]

EXAMPLE A preferred embodiment of the weft driving side of the method and apparatus for producing a carbon fiber woven fabric by the water jet loom of the present invention will be described together with its action with reference to the drawings, and specific examples will be given. And the result is demonstrated. FIG. 1 shows an apparatus for producing a carbon fiber woven fabric by a water jet loom according to an embodiment of the present invention, mainly showing a weft driving part.

First, a yarn path (weft running route) through which the weft passes in the water jet loom will be described. Tension is applied to the weft yarn 2 of carbon fiber unwound from the bobbin 1 by passing it through a washer type tenser 3.
Subsequently, the weft yarn 2 is nipped by the feed roller 5 and the pressure roller 6 which are positively rotating through the yarn guide 4,
The yarn required for weft driving is continuously measured at a constant speed, and is guided to the rotary drum 7 of the weft storage as a storage portion. The weft yarn 2 discharged from the rotary drum 7 reaches the nozzle 14 of the nozzle joint 10 via the clamper 8 and the gate wire 9.

The nozzle joint 10 has a supply pipe 1
A pump 18 is connected via 7. The pump 18 measures the amount of water of about ³ to 6 cm ³ required for one pick of weft threading, and the water pressurized to about 12 to 25 kg / cm ² is sent to the nozzle joint 10. The nozzle 14 of the water jet loom typically has a configuration as shown in FIG. 2, and the weft yarn 2 inserted through the needle 15 from the inlet portion 15 of the needle 15 of the nozzle 14 is attached to the nozzle joint 10. It is carried on the jet stream of the pressurized water supplied and jetted together with the jet water. Nozzle joint 10
The pressurized water supplied to the first stretches the weft 2 at the tip of the nozzle 14 (tip of the needle 15), and then the clamper 8
Opens and the weft yarn 2 measured and stored for one pick is
When the warp sheets 11 and 11 are opened and the reed 13 starts to retreat, the weft yarn 2 and the feed roller 5 which have been jetted from the nozzle 14 toward the space between the warp sheets 11 and 11 by being put on the jet water flow and stored. And pressure roller 6
The weft yarn 2 being sandwiched between and being supplied is driven in. After the weft yarn 2 is driven in, the reed 13 moves forward and the weft yarn 2
Of the warp sheets 11 and 11 while closing them relative to the cloth fell (the root between the opened warp sheets 11 and 11), the weft 2 is cut by the cutter 12, the clamper 8 is closed, and the weft 2 is supplied. Can be stopped. Then, the weft 2 required for the next driving is accumulated in the storage drum 7, and after the predetermined yarn length is accumulated, the next weft driving is started. The above-described structure and operation are the normal structure and weaving method using the water jet loom, and there is no change in manufacturing the carbon fiber woven fabric.

If the nozzle clogging due to the fluff generated by rubbing with the guides of various yarn paths or the storage drum is eliminated, the carbon fiber fabric can be woven at a high speed by the water jet loom. The present invention has been completed.
When carbon fiber is used for the weft, the knot strength is small, the elongation at break is small, the elastic modulus is large, and the single fiber diameter is much smaller than ordinary natural fibers or synthetic fibers. When weaving at high speed, the running speed of the weft thread is also 30 per minute.
The speed is as high as 0 to 1,500 m, and it is inevitable that fluff is generated by rubbing on the surface of the guide or the drum. Fortunately, the fluff of carbon fiber generated in the water jet loom has a small specific gravity, the diameter of the single fiber is as thin as about 5 to 10 microns, and the length of the fluff becomes a short fiber shape of several millimeters to several centimeters. In addition, since the carbon fiber has a high elastic modulus, the single fibers are unlikely to be entangled with each other like synthetic fibers, and can be relatively easily scattered in the air.

However, when observed carefully, there is a large amount of fluff accumulated on the gate wire of the water jet loom and the yarn path of the clamper. When the accumulated amount of fluff increases in quantity, the running weft of carbon fiber is run. 2 and adheres to, and accumulates at the inlet portion 15 of the needle 16 of the nozzle 14 shown in FIG. While the accumulated amount is small and the resistance due to the fluff is small, the weft 2 is normally driven by being placed on the jet water jet ejected from the nozzle 14, but if the weft driving is repeated, the fluff at the needle inlet portion 15 The accumulated amount became large and it became clogged, and finally it became impossible to drive the weft 2 by riding it on the jet water stream. Attempts were made to remove the fluff accumulated on the yarn paths of the gate wire 9 and the clamper 8 by air suction, but this phenomenon did not change.

Further, in the conventional water jet loom, a waterproof cover may be generally attached in order to prevent the spray water from scattering, but since the needle inlet of the nozzle is installed in the spray water scattering area. The needle inlet was always wet with water. It is considered that this promotes the accumulation of fluff at the needle inlet portion 15 as described above.

Therefore, in the present invention, first, as shown in FIG. 3, a waterproof cover 19 is installed on the jet water jet side of the nozzle 14 so that the needle inlet portion 15 of the nozzle 14 is outside the splash area of the jet water. ing. More specifically, the waterproof cover 19 is attached to the tip end side of the nozzle holder 20, and in particular, the needle inlet portion 15 is outside the sprayed water splash region. Further, the waterproof cover 19 allows the needle inlet portion 15 and the needle inlet portion 15 of the nozzle 14 to start from the needle inlet portion 15.
In the weft running route up to, it was possible to completely block the spray of water and prevent water from getting wet.

In the weft running path, the spray water is completely prevented from scattering, and various guides to the weft storage drum 7 and the nozzle 14 and the needle inlet portion 15 of the nozzle 14 are prevented from adhering and accumulating carbon fiber fluff due to water droplets. By preventing the fluff from clogging the needle inlet portion 15 of the nozzle 14, the weft yarn 2 containing carbon fibers can be continuously driven. As a result of observation, gate wire 9 and clamper 8
The amount of fluff accumulated on the yarn path of No. 2 was reduced, and the amount of fluff accumulated at the needle inlet 15 was also reduced. By completely blocking the spray water, the needle inlet 15
It is considered that in the yarn path of the weft yarn 2 including, the fluff was not attached by water and the fluff was scattered in the air.

Unlike the case of synthetic fibers, the fluff of the carbon fiber multi-filament yarn also occurs at the production stage of the carbon fiber, and the weft yarn wound around the bobbin originally has the fluff. In the water jet loom, the running speed of the weft thread is as high as 300 to 1,500 m per minute, and the friction between the carbon fiber unwound from the bobbin and the thread layer of the bobbin, the rubbing with the tensor and the yarn guide, and the feed. It is inevitable that fluff is generated by rubbing with the surface of the weft yarn storage drum when it is sandwiched between the roller and the pressure roller, and with the clamper or the gate wire after coming out of the storage drum. These fluffs adhere to the wefts and move, accumulate at the needle inlet portion of the nozzle, and finally progress to fluff clogging.

In the present invention, the specific gravity of the carbon fiber is 1.75 to.
Paying attention to the fact that the fiber is small as 1.90 and the fibers are thin and scatters in the air. Suction pipes 21, 22 and 23 are provided at three points, that is, the wire 9 portion and the needle inlet portion 15, and suction is performed by air suction by the suction pipes 21, 22, and 23. For air suction, blower 24 sucks in air,
The suction capacity of each suction pipe 21, 22, 23 is controlled by the valve 2
Set appropriately with 5, 26, 27. A blower may be provided for each of the suction pipes 21, 22, 23.

In this air suction, the suction capacity of one suction pipe is preferably about 0.1 to 2.0 m ^{3 /} min. When it is 0.1 m ³ or less, a small amount of fluff is recognized in the clamper 8, the gate wire 9 and the needle inlet portion 15, and the fluff is accumulated in the needle inlet portion 15 during a long time operation, resulting in needle clogging. Connect. Further, when it is 2.0 m ³ or more, the suction force becomes too strong, the weft yarn 2 is sucked in, and the weft yarn 2 made of carbon fiber is sucked into the suction port.
Come in contact with each other and fluff comes out, and the weft 2
Will disappear and you will not be able to type in again. That is, while the weft driving is completed and the weft 2 necessary for the next driving is stored, the clamper 8 is closed to restrain the movement of the weft 2. Further, since the weft yarn 2 cut by the cutter 12 comes out from the nozzle tip by about 4 to 6 cm after the completion of the previous driving, and is in a free state, the weft yarn 2 will come out of the nozzle 14 when the suction force is strong. I will end up. Also,
Air Suction suction ports intended for pipe-shaped, cross-sectional area is preferably about 50 mm ² 500 mm ^2. 50 mm ²
If it is below, the suction range is narrow and fluff removal is incomplete, and if it is above 500 mm ² , the suction force becomes weak,
Incomplete suction of fluff.

Further, in the present invention, in order to prevent the needle clogging due to the fluff, which finally hinders the weft flying,
It is also possible to give vibration to the weft yarn 2 to remove the fluff adhering to the tube wall of the inlet portion 15 of the needle 14 and drive the removed fluff together with the weft yarn 2. Such an oscillating operation can be performed using the operation associated with the air suction. For example, if the needle inlet 15 is constantly sucked by air suction, the weft flying ends, and while the weft 2 for one pick is stored in the storage portion 7, the weft 2 stays in the needle inlet of the nozzle 14. Loosen along the pipe wall of the portion 15. Next, when water is jetted from the nozzle 14, the weft yarn 2 is tensioned straight, and the fluff attached to the tube wall falls off and is driven together with the weft yarn 2. This movement is repeated while driving the weft thread in the water jet loom, so that the accumulation of fluff is prevented. This repetitive movement of loosening and tension of the weft is preferable because the method by air suction can be performed at the same time as dust collection of fluff, but the method is not limited to the method by air suction, and mechanical vibration due to cam drive etc. Good.

The degree of relaxation and tension of the weft yarn 2 is preferably 0.5D to 1.0D at the inlet, where D is the diameter of the inlet of the needle 16 (shown in FIG. 2).

In the above description, how to remove the fluff generated in producing the carbon fiber woven fabric in the water jet loom has been described, but it is important to suppress the fluff generation as much as possible, and the following method is effective. .

That is, the openings of the warp sheets 11 and 11
Since fluff is also generated due to the rubbing of the warp yarns accompanying the closing movement, water is sprayed on the warp yarn sheet 11 to focus the warp yarns with water, and water is used as a lubricant.

When carbon fiber wefts are stored in the drum system (as shown in FIG. 1, when the wefts are stored in the storage drum 7), it depends on the drum diameter and the weft driving length.
Usually, the weft yarn is unwound from the drum by two or three layers, and the weft yarn is unwound from the drum by jetting water. The weft yarn supplied to the drum is
It is designed to wind around the drum due to the compressed air blown on the drum. In winding the yarn around the drum, there is no problem as long as the weft is wound such that the unwinding of the weft from the drum is unwound sequentially from the nozzle side. However, when a relatively heavy carbon fiber is wound by compressed air, the winding does not necessarily unwind from the nozzle side in sequence, and the weft yarn far from the nozzle rubs against the weft yarn wound near the nozzle. However, it may be unwound and fluff may occur. Even in such a case, if it is wound around the side wall surface of the drum 5 to 20% larger than the diameter of the drum, the winding is such that it is unwound sequentially from the nozzle side, and the occurrence of fluff is eliminated.

When the woven fabric woven by the water jet loom as described above is dried by a heater attached to the loom or through a hot roller immediately after weaving, the sizing agents do not adhere to each other.

A more specific embodiment of the present invention will be described below. Example 1 As a warp, a carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared and 385 pieces were set in a creel. This was passed through a reed so that the warp density was 3.5 yarns / cm. The same carbon fiber yarn as the warp yarn is prepared for the weft yarn, and the water amount of one pick is 4.2 cm ³ and the water pressure is 18 kg / cm ² , and the number of rotations of the water jet loom, that is, the number of times of driving the weft yarn per minute is 400. Weft density of 3.5 per turn / minute
A carbon fiber woven fabric having a book / cm and a flat weave was woven. In addition, a waterproof cover is attached to the tip of the nozzle holder, and the needle inlet is set outside the splash area of the jet water, and the jet water is completely scattered in the weft traveling path from the bobbin to the needle inlet of the nozzle, including the needle inlet. It was cut off to prevent the weft from getting wet with water. 1,0 under the above conditions
When weaving 00m, weaving of the loom was detected by the weft filler due to needle clogging of the carbon fiber nozzle.
The stop frequency per 0 m was as good as 15.3 times.

Example 2 As a warp, a carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.,
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared and 385 pieces were set in a creel. This was passed through a reed so that the warp density was 3.5 yarns / cm. The same carbon fiber yarn as the warp yarn is prepared for the weft yarn, and the water amount of one pick is 4.2 cm ³ and the water pressure is 18 kg / cm ² , and the number of rotations of the water jet loom, that is, the number of times of driving the weft yarn per minute is 400. Weft density of 3.5 per turn / minute
A woven fabric having a book / cm and a flat weave was woven. In addition,
With suction pipes with an inner diameter of 18 mm provided at the clamper part, gate wire part and needle inlet part,
The air suction capacity was 1.05 m ³ per minute, and the air was suctioned by the air suction method. When the fabric was woven for 1,000 m under the above conditions, the weaving machine sensed by the weft filler due to the needle clogging of the carbon fiber nozzle, and the stopping frequency per 100 m of weaving was 13.1 times, which was good.

Example 3 As a warp, a carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.,
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared and 385 pieces were set in a creel. This was passed through a reed so that the warp density was 3.5 yarns / cm. The same carbon fiber yarn as the warp yarn is prepared for the weft yarn, and the water amount of one pick is 4.2 cm ³ and the water pressure is 18 kg / cm ² , and the number of rotations of the water jet loom, that is, the number of times of driving the weft yarn per minute is 400. Weft density of 3.5 per turn / minute
A woven fabric having a book / cm and a flat weave was woven. In addition,
The loosening / tensioning of the weft thread is such that at the inlet of the needle, the amplitude of the weft is 1.0D with respect to the diameter D of the inlet, and the fluff of the carbon fiber attached to the needle tube wall is removed while driving the weft of the carbon fiber thread. I went. When the fabric was woven for 1,000 m under the above conditions, the weaving machine sensed by the weft filler due to the needle clogging of the carbon fiber nozzle, and the stopping frequency per 100 m of weaving was as good as 13.1 times.

Example 4 As a warp, carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.,
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared and 385 pieces were set in a creel. This was passed through a reed so that the warp density was 3.5 yarns / cm. The same carbon fiber yarn as the warp yarn is prepared for the weft yarn, and the water amount of one pick is 4.2 cm ³ and the water pressure is 18 kg / cm ² , and the number of rotations of the water jet loom, that is, the number of times of driving the weft yarn per minute is 400. Weft density of 3.5 per turn / minute
A woven fabric having a book / cm and a flat weave was woven. In addition,
Suction pipes with an inner diameter of 18 mm provided at the clamper part, the gate wire part and the needle entrance part
While the air suction capacity of the book is 1.05 m ^{3 /} min while suctioning by air suction, the weft loosening / tensioning is such that the weft amplitude is 1.0D with respect to the inlet diameter D at the needle inlet,
While removing the fluff of carbon fiber adhering to the tube wall of the needle, weft driving of the carbon fiber yarn was performed. When the fabric was woven for 1,000 m under the above conditions, the weaving machine sensed by the weft filler due to the needle clogging of the nozzle of the carbon fiber, the stopping frequency per 100 m of weaving was 2.5 times, which was very good.

Example 5 As a warp, carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.,
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared and 385 pieces were set in a creel. This was passed through a reed so that the warp density was 3.5 yarns / cm. The same carbon fiber yarn as the warp yarn is prepared for the weft yarn, and the water amount of one pick is 4.2 cm ³ and the water pressure is 18 kg / cm ² , and the number of rotations of the water jet loom, that is, the number of times of driving the weft yarn per minute is 400. Weft density of 3.5 per turn / minute
A woven fabric having a book / cm and a flat weave was woven. In addition,
A waterproof cover is attached to the tip of the nozzle holder, and the needle inlet is outside the splash area of the jet water, and the jet water is completely blocked in the weft running path from the bobbin to the needle inlet of the nozzle, including the needle inlet. The weft was prevented from getting wet with water. In addition, the suction pipe with an inner diameter of 18 mm provided at the clamper portion, the gate wire portion, and the needle inlet portion has an air suction capacity of 1.05 m ³ per minute while sucking air by suction while The relaxation / tension was carried out at the inlet of the needle by setting the amplitude of the weft to 1.0D with respect to the diameter D of the inlet and removing the fluff of the carbon fiber adhering to the tube wall of the needle while driving the weft of the carbon fiber yarn. . When the fabric was woven for 1,000 m under the above conditions, the weaving machine sensed by the weft filler due to the needle clogging of the carbon fiber nozzle, the stopping frequency per 100 m of weaving was 0.3 times, which was very good.

COMPARATIVE EXAMPLE 1 Carbon fiber yarns of warp and weft, density of warp and weft, number of warp, woven structure, weft driving speed, water amount of one pick of jetted water, and water pressure were the same as those in the above-mentioned examples. A weaving test according to the prior art was conducted, and when the weaving machine was stopped due to the needle clogging of the carbon fiber nozzles as in the example, the weaving condition of the weaving machine was about 0.1 to 1.5 m. Clogged and stopped. The number of stops per 100 m of weaving was 82, which was extremely large. It took a long time to restart the operation such as removing the fluff stuck in the needle and threading the needle, and the operating rate was low, and it was not possible to normally produce the carbon fiber woven fabric.

Next, a preferred embodiment of the method and apparatus for producing a carbon fiber woven fabric by the water jet loom of the present invention on the warp side will be described together with its action with reference to the drawings, and specific examples and The result will be described. FIG. 5 and FIG. 6 show a warp weaving section of the apparatus for producing a carbon fiber woven fabric using a water jet loom according to an embodiment of the present invention.

In FIGS. 5 and 6, the warp yarns 31 are drawn out from the bobbin 32 of the creel, and after the warp yarns 31 arranged in parallel pass through the tension applying rolls 33, the four heddle frames, that is, from the cloth fell A (FIG. 6). First heald frame 34, second heald frame 3
5, a large number of wire healds 38 (for the number of warp threads) attached to the third heald frame 36 and the fourth heald frame 37, 3
9, 42, 43, 44, respectively
5, the warp yarns 31 are passed one by one through the reeds 48 formed between the reed wing 47 of the reed 13. Warp 31
Between the reeds 47 and the reeds 47, that is, in each reed 48, the first
From the warp threaded through the heddle 42 of the heddle frame 34 to the fourth heald frame 37
The warp yarns up to the line 45 were passed one by one, and this was repeated in parallel so that the warp yarns 31 were not entangled with each other in the reed 13. The opening / closing movement of the warp 31 is performed by the first heald frame 34 and the third heald frame 36, and the second heald frame 35 and the fourth heald frame 35.
It was given by synchronizing the vertical movement of the heddle frame 37. With the vertical movement of each heddle, the tension per warp of 0.01 to 0.03 g / denier is applied,
12-25k depending on the pump when the warp sheet opens
The weft yarn 2 is inserted by a water jet pressurized to g / cm ² and having a water amount of ^{3 to} 6 cm ³ / pick. Weft 2
Is then carried to the cloth fell by the reed 13, and at this time, the heddle moves up and down to close the cloth and form the fabric 61. Fabric 61 obtained by repeating such weaving operation
After passing through a guide roll, is dried by a heater and then wound up by a winding roll (not shown). The steps so far are no different from the normal weaving operation using the water jet loom.

If weaving of carbon fibers is performed at a low weft driving speed of about 100 picks / minute to about 150 picks / minute, the tension of the warp threads should be sufficiently controlled to optimize the surface condition of the guides and rolls. However, carbon fibers could be woven though the fluff was generated, but the loom speed was large in the water jet loom, especially 250 picks /
When driving at a driving speed of more than a minute, fluffs were generated on the carbon fibers of many warp yarns in an instant, and this also caused warp breakage, resulting in a state where the weaving operation was impossible. Through intensive studies, the following phenomenon was discovered.

When observing the fluff generation state of the carbon fiber of the warp, the sheet-like warp drawn out from the warp creel is normal without extreme filament breakage until entering the heddle, but normal synthetic fiber Similar to the weaving of No. 3, fluff was remarkably generated in the reed part and the heddle part. Furthermore, when observing the operating state in detail, the locations where the fluffs of the warp are generated are not uniform over the entire width, and pass through the carrier rods (corresponding to 49, 50, 51, 52 in FIG. 6). The intervals between the individual healds were not uniform, and the warps were concentrated and fluffed where the intervals between the healds were not uniform. The warp thread was passed through the four heddle frames to open and close the warp sheet, but the warp thread passing through the rear heddle was passed through the carrier rod of the front heddle, and the heddle of each heald was passed through. The carbon fiber of the warp was fluffed when the warps were rubbed on the outside of the heddle of the heddle and the heddle wire at the non-uniform intervals.

Generally, in a carbon fiber woven fabric, carbon fiber yarns are thicker than ordinary synthetic fiber yarns, and when a composite material is used, stress concentration due to bending of the woven yarns constituting the woven fabric is reduced and mechanical properties are increased. Therefore, it is a textile standard with a low density. Therefore, when weaving a carbon fiber woven fabric, the warp density is also coarse, that is, the density of the heddle passed through the carrier rod is also coarse. The warp threads pass through the healds of the heddle, and the sheets of these warp threads perform opening and closing movements during weaving, and the heddle moves up and down and is constantly vibrated. When weaving synthetic fiber woven fabric, warp density is also 20-50 yarns / c
Since it is as large as m, the number of healds to be used is large, and therefore the density of healds is also large, that is, the spacing between healds is small and there is no problem.
Since it is as small as about cm, the density of the heddle is coarse, that is, the heddle spacing is large, so due to variations in warp tension,
The position of the heddle passed through the carrier rod moves greatly.

On the other hand, the warp is passed through the reeds of the reed, and this reed is fixed to the main body of the loom. Thus, when the position of the heddle moves, the warp moves diagonally with respect to the heddle of the heddle. It will enter and be rubbed by the edge of the reed wing. In particular, it has been found that when the loom rotation speed is high and the rotation speed is 250 picks / minute or more, the rubbing increases the frequency of breakage of the filaments forming the carbon fiber yarn and increases the occurrence of fluff.

In order to explain the embodiment of the present invention with reference to the drawings, therefore, as shown in FIG. 6, four heald frames are used, and from the cloth fell A to the first heald frame 34, the second heald frame 35, A third heald frame 36 and a fourth heald frame 37 are provided. Grooves 53 are formed on the upper carrier rods 49, 50, 51, 52 of the healds at equal intervals of the warp interval (mm) of the fabric × the number of healds. I hooked all the heddle used for. The carrier rod is fixed to the heddle frame by the middle hook 54 in the up-down direction and the first heddle frame 34 to the fourth heald frame 37 so that the warp yarns 31 passed through the respective healds are arranged at equal intervals in the left-right direction. Groove 2 of each carrier rod 49, 50, 51, 52 of
No. 3 is sequentially shifted by the warp interval, and the heddle plate 55 is arranged so that each heddle cannot move. The fixing of the heddle in the left-right direction does not necessarily have to be performed on both the upper and lower carrier rods, but may be fixed by at least one of the carrier rods.

With respect to the reed 13, the positions of the respective heddle frames or the reeds 13 are adjusted so that the warp threads 31 pass through substantially the center of the reeds 48 in the warp arrangement direction, and the positions of the heddle frames and the reeds 13 are fixed. To do. That is, the angle between the reed surface and the warp yarns 31 that have passed through each heddle is set to be substantially a right angle so that all the warp yarns 31 enter the reeds 48 straight.

The fixing of each heddle is not necessarily limited to the above method, and the healds are simply arranged on a regular carrier rod having no groove at intervals of warps, that is, pitches of reeds, at equal intervals. You may fix it with adhesive tape. That is, the healds arranged at a predetermined interval may be fixed so that they do not move even during operation.

The number of healds used in the present invention is not limited to four, and the number required to form a fabric structure may be used. For example, when the fabric structure is a flat structure, 2 You can use 5, 4, or 5 for satin weave and 8 for satin weave.

In the present invention, the angle formed by the warp thread passing through the heddle and the reed surface is most preferably 90 °, but there may be some deviation when the heddle frame or the reed is attached. Practically 9
There is no problem if it is within 0 ° ± 10 °. If it deviates from this angle, the friction between the warp and the reed wing becomes large and fluff occurs, which is not preferable.

The weft driving speed of the carbon fiber woven fabric according to the present invention is 250 to 800 picks per minute. When it is 250 picks / minute or less, the woven fabric woven in the water jet loom is wet with water and needs to be dried, so that the economical effect is small. Also, 800 picks /
When the amount is more than the above, warp fluffs are often generated, the specific gravity of carbon fiber is larger than that of synthetic fiber, and the yarn fineness is large, so that weft flying mistakes are also unfavorable.

Normally, the water jet room is flat
A heald is used, but the heddle used in the present invention is
From the viewpoint of reducing the damage to the carbon fiber yarn, it is preferable to use the wire heald with a ring because the occurrence of fluffs due to the weaving of the yarn and the rubbing between the wire and the yarn is reduced.

In order to prevent the generation of fluff due to the friction between the warp threads associated with the opening and closing movements of the warp threads, a carbon fiber warp sheet is placed between the heddle and the backrest beam in a centrifugal humidifier at a rate of 5 to 5 hours per hour. Spraying with about 20 liters of water can give a warp-converging property of carbon fiber having no twist or a small number of twists, and since water also acts as a lubricant, it is preferable for high-speed rotation by a water jet room. .

Example 6 As a warp, a carbon fiber "Torayca" T-300 manufactured by Toray Industries, Inc.,
A carbon fiber yarn having a filament number of 3,000 filaments, a cross-sectional area of 0.112 mm ² , and a twist number of 15 times / m was prepared, and 550 pieces were set in a creel. The warp yarn unwound from the creel was passed through three tensioning rollers, passed through a guide roll, and then passed through the wire-held creases attached to the heddle frame. Four heddle frames are used, and the first heald frame, the second heddle frame, the third heddle frame and the fourth heddle frame are used from the front of the weave, and the warp spacing of the woven fabric is 2 mm × 4 (the number of healds) on the carrier rod above each. ) = 8 mm at intervals, and the carrier rod is fixed to the heddle frame by fixing the grooves of the carrier rods of the first to fourth heald frames by 2 mm in order, and pressing the heddle onto each heddle. I made it impossible to move. As for the warp, one warp thread passed from the first heddle to the heddle of the first heddle frame to the fourth heddle frame to the heddle with a reed density of 5 / cm is passed through each reed, and this is repeated. The reeds were passed through the reed so that they would not entangle with each other.

The opening and closing movements of the warp were given by making the vertical movements of the warp sheets of the first heddle frame and the third heddle frame, and the second heddle frame and the fourth heddle frame the same. While spraying 8 liters of water per hour on the warp sheet with a centrifugal humidifier, when the first heddle frame and the third heddle frame go up and the second heddle frame and the fourth heddle frame go down and the warp sheet opens, The amount of water pressurized to 18 kg / cm ² by the pump is 4.2 cm
³ / After inserting the weft with jet water of the pick, beat it, then lower the first heddle frame and the third heddle frame, raise the second heddle frame and the fourth heddle frame and open the warp sheet Wefting was repeated, and this was repeated, and the number of rotations of the loom, that is, the weft driving speed per minute was 400 picks, and the yarn was wound so that the weft density became 5 yarns / cm. Since this fabric was wet with water, it was dried with a heater and then wound on a winding roll. The woven fabric had a warp and weft density of 5 yarns / cm, a carbon fiber areal weight of 200 g / m ² , and a fabric width of 110 cm.

When weaving was continued in this state, as the weaving length increased, some fluff adhered to the reed was observed, but this did not affect the fabric quality up to 1,100 m, and there was no warp breakage. It was Weaving length is 1,100
When m was exceeded, unevenness in the warp tension started to occur due to the fluff attached to the reeds of the reed, so the operation of the loom was stopped and the fluff attached to the reed was removed.

Comparative Example 2 As in the prior art, using a carrier rod without grooves,
All the healds were allowed to move freely on the carrier rod, and the other conditions were the same as in Example 6 except that the warp and weft densities were 5 threads / cm each and the carbon fiber areal weight was 200 g / m 2.
^2. A carbon fiber fabric having a fabric width of 110 cm was woven.

When weaving was continued in this state, as the weaving length increased, many fluffs began to accumulate on the reed's reed,
After weaving for about 50 m, many unevenness of warp tension was observed, and lead marks, that is, unevenness of warp spacing of the woven fabric, were observed in many places. When weaving is continued, weaving length is 200m.
When the number exceeds, the unevenness of the warp tension started to occur in the fluff adhered to the reeds of the reed. Therefore, the operation of the loom was stopped and the fluff adhered to the reed was removed. The warp breakage occurred 3 times and the weaving efficiency was extremely poor.

[0068]

As described above in detail, according to the method for producing a carbon fiber woven fabric by the water jet loom and the apparatus therefor of the present invention, when the weft of carbon fiber, which is prone to fluffing, is driven, it is jetted at the weft yarn path. Preventing the accumulation of fluff by blocking the scattering of water, removing fluff by suction, and further applying vibrations such as relaxation and tension to the weft thread at the needle entrance causes the adhered fluff to fall off. It is possible to eliminate the needle clogging of the nozzle due to the carbon fiber fluff by driving the water with the jet water, reduce the frequency of the loom using the water jet loom, and manufacture the carbon fiber woven fabric at a high operating rate at a low cost. It became possible to do.

Further, in the present invention, when weaving a carbon fiber woven fabric in a water jet loom, the position of each heddle is fixed and the warp yarn is passed through approximately the center between the reed feathers. Therefore, the carbon fiber woven fabric having a low warp density is obtained. In manufacturing the yarn, the positions of the healds do not shift during operation, and the warp intervals are uniform. Therefore, even when operating at high speed, the amount of fluff of carbon fibers generated by rubbing against the heddle or reed is reduced, and it is possible to operate without cleaning the fluff for a long time. Since the warp tension unevenness is small, the quality of the fabric is good. Weft driving speed in water jet loom is 250 picks /
Min-800 picks / min or more is possible, productivity is improved, and it becomes possible to manufacture a carbon fiber woven fabric at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a weft driving part of a carbon fiber fabric manufacturing apparatus using a water jet loom according to an embodiment of the present invention.

2 is a vertical cross-sectional view of a nozzle portion of the apparatus shown in FIG.

3 is a partial perspective view of the device of FIG.

FIG. 4 is a perspective view when an air suction pipe is added to the device of FIG.

5 is a perspective view of a warp weaving section in the apparatus of FIG. 1. FIG.

6 is an enlarged partial perspective view of the device of FIG.

[Explanation of symbols]

 1 Bobbin 2 Weft 3 Tencer 4 Yarn Guide 5 Feed Roller 6 Pressure Roller 7 Weft Storage Drum 8 Clamper 9 Gate Wire 10 Nozzle Joint 11 Warp Sheet 12 Cutter 13 Reed 14 Nozzle 15 Needle Inlet 16 Needle 17 Supply Pipe 18 Pump 19 Waterproof Cover 20 nozzle holder 21, 22, 23 suction pipe 24 blower 25, 26, 27 valve 31 warp 32 bobbin 33 tension applying roll 34, 35, 36, 37 heddle frame 38, 9, 40, 41 wire heald 42, 43, 44, 45 Heme 47 47 Reed 48 Reed 49, 50, 51, 52 Carrier Rod 53 Groove 54 Middle Hook 55 Holding Plate 61 Woven Fabric

Claims (11)

[Claims] 1. A warp sheet is opened / closed, wefts containing carbon fibers are stored in a storage portion for one pick, and the wefts are put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In a method of manufacturing a carbon fiber woven fabric that is driven between warp sheets, it is possible to drive a weft while blocking the spray of water jet from a nozzle in a weft running path between a bobbin wound with a weft and a needle inlet of a nozzle. A method for producing a carbon fiber woven fabric using a water jet loom. 2. A warp sheet is opened and closed to store a weft containing carbon fibers for one pick in a storage portion, and the weft is put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In the method for producing a carbon fiber woven fabric driven between warp sheets, at least between the reservoir portion and the needle inlet portion of the nozzle in the weft traveling path between the bobbin wound with the weft yarn and the needle inlet portion of the nozzle, A method for producing a carbon fiber woven fabric by a water jet loom, characterized by driving a weft yarn while sucking the attached fluff by air suction. 3. A warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick, and the weft is put on jet water sprayed from a nozzle of a water jet room when the warp sheet is opened. In the method of manufacturing a carbon fiber woven fabric that is driven between warp sheets, while the weft yarn equivalent to one pick is finished and the next one pick equivalent weft yarn is stored in the reservoir, the weft yarn is inserted into the needle inlet of the nozzle. Of a carbon fiber woven fabric by a water jet loom, characterized in that the fluff adhered to the tube wall is loosened along the tube wall of the portion and the fluff is driven together with the weft during the next weft driving. . 4. A warp sheet is opened and closed to store a weft containing carbon fibers for one pick in a storage portion, and the weft is put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In a method for producing a carbon fiber woven fabric that is driven between warp sheets, (a) blocking of splashing of jet water from a nozzle in a weft traveling path between a bobbin wound with a weft and a needle inlet portion of a nozzle; ) While sucking the fluff attached to the weft by air suction between at least the reservoir portion of the weft traveling path between the bobbin wound with the weft and the needle inlet portion of the nozzle and the needle inlet portion of the nozzle, c) While the weft equivalent to 1 pick has been driven in and the weft equivalent to the next 1 pick is stored in the reservoir, the weft is inserted into the nozzle wall of the needle inlet of the nozzle. The fluff adhered to the tube wall is slackened so as to come into contact with the fluff, the fluff is sucked by the air suction, and the fluff that cannot be sucked is driven with the weft during the next driving. A method for producing a carbon fiber woven fabric by a water jet loom. 5. A method for producing a carbon fiber woven fabric, wherein a warp sheet is opened and closed, and when the warp sheet is opened, the weft yarns are placed on water jetted from a nozzle of a water jet loom and the weft yarns are driven between the warp sheets. By fixing the position of each heddle to be guided in the warp yarn arranging direction, the warp yarn from each heddle is passed through the reeds formed between each reed wing, almost in the center of the warp yarn arranging direction. Weaving method of carbon fiber woven fabric. 6. The method for producing a carbon fiber woven fabric by a water jet loom according to claim 5, wherein the weft driving speed in the water jet loom is 250 picks / min to 800 picks / min. 7. A warp sheet is opened and closed to store a weft containing carbon fibers for one pick in a storage portion, and the weft is put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In a carbon fiber woven fabric manufacturing apparatus for driving between warp sheets, on the jet water jet side of the water jet loom, splash of jet water to a weft traveling path between a bobbin wound with a weft yarn and a needle inlet of a nozzle is scattered. An apparatus for producing a carbon fiber woven fabric by a water jet loom, which is provided with means for shutting off. 8. A weft yarn sheet is opened and closed to store a weft yarn containing carbon fibers for one pick in a storage portion, and the weft yarn is put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In a manufacturing apparatus for a carbon fiber woven fabric driven between warp sheets, at least between the reservoir portion and the needle inlet portion of the nozzle of the weft traveling path from the bobbin wound with the weft yarn to the needle inlet portion of the nozzle, An apparatus for producing a carbon fiber woven fabric by a water jet loom, which is provided with an air suction means for sucking the attached fluff. 9. A warp sheet is opened and closed to store a weft containing carbon fibers in a storage portion for one pick, and the weft is put on jet water jetted from a nozzle of a water jet room when the warp sheet is opened. In the carbon fiber woven fabric manufacturing apparatus for driving between the warp sheets, while the weft for one pick is driven in and the weft for the next one pick is stored in the reservoir, the weft is fed through the needle inlet of the nozzle. An apparatus for producing a carbon fiber woven fabric by a water jet loom, which is provided with a means for slackening along the pipe wall of the section. 10. A warp sheet is opened and closed to store a weft containing carbon fibers for one pick in a storage portion, and the weft is put on jet water sprayed from a nozzle of a water jet room when the warp sheet is opened. In an apparatus for producing a carbon fiber woven fabric that is driven between warp sheets, (a) jet water to a weft running path between a bobbin wound with a weft and a needle inlet of a nozzle on the jet side of the water jet loom. With means to block the scattering of
(B) Suck the fluff attached to the weft yarn at least between the reservoir portion and the needle inlet portion of the nozzle of the weft traveling path from the bobbin around which the weft yarn is wound to the needle inlet portion of the nozzle, and make one pick. An air suction means is provided for slackening the weft along the pipe wall at the needle inlet of the nozzle while the weft is being driven into the reservoir and the next pick is being stored in the reservoir. An apparatus for producing a carbon fiber woven fabric using a water jet loom, which is characterized in that 11. A carbon fiber woven fabric manufacturing apparatus in which a warp sheet is moved to open and close, and when the warp sheet is opened, the weft yarn is put on jet water jetted from a nozzle of a water jet loom to drive the weft yarn between the warp sheets. The position of each heddle to be guided is fixed in the warp yarn arranging direction so that the warp yarns from each heddle pass through substantially the center of the warp yarn arranging direction between the reeds formed between the respective reed blades. Equipment for manufacturing carbon fiber fabrics using a water jet loom.