WO1998029589A1 - Reed for water injection loom, and weaving method using same - Google Patents

Abstract

In a state mounted to a water injection loom, a dent is shaped such that its upper portion is bent toward a cloth fell to be doglegged in shape. When weaving is carried out using such dent, water jet into a warp opening performs weft insertion using a warp which is composed of a plurality of substantially non-twisted thermoplastic synthetic fiber multifilament threads having over 100 counts of twist per meter or interlacing points due to an interlace processing, and in a state that a distance over which the reed rubs the warp due to swinging of the reed is made short by bending the dent into the doglegged-shape.

Description

 Description Document for water jet loom and weaving method using the same [Technical field]

 TECHNICAL FIELD The present invention relates to a water jet loom dresser which is used when weft is inserted into a water stream jetted from a nozzle attached to the water jet loom to thereby perform weft insertion. Further, the present invention relates to a method for weaving a thermoplastic synthetic fiber woven fabric using the above-mentioned material, and more particularly, to a substantially untwisted polyester having a confounding point by weak twisting or interlacing, and the like. The present invention relates to a method for weaving a thermoplastic synthetic fiber woven fabric using a multifilament yarn of thermoplastic synthetic fiber as a warp.

 [Background technology]

 As the weaving speed of shuttleless looms increases, it is naturally necessary to increase the reciprocating motion of the machine. However, if you try to reciprocate the mosaic at high speed, the mosaic will have a large inertial force. Therefore, in order to suppress the occurrence of inevitable vibration and the like due to the generation of the inertial force, it is necessary to increase the rigidity of the pusher and to reduce its weight.

The water jet loom, which allows the weft to fly along with the jetted water and thus allows the warp shedding to be reduced, reduces the length of the warp (the size of the top and bottom) and reduces the weight. This is advantageous in that it can be achieved. On the other hand, air jet looms and levia looms need to have a larger warp shedding amount due to the lower flight stability of the weft. The above problems such as vibrations caused by the reciprocating movement of the airplane become more serious. <Therefore, in order to reduce such a problem, in air jet looms and rapier looms that have a large moving stroke, As shown in Fig. 1-a, attempts have been made to bend the upper part of the wing to the front side of the loom to reduce the wing length H (the size of the top and bottom), thereby reducing the weight. Fig. 1 (b) is a cross-sectional view of the air jet loom.

 Regarding the advantage of reducing the length of the warp, see FIG. 1a, which shows the warp 6 in which the warp 6 is opened up and down by forming the opening angle by the wool wings (1 or 2). This will be described in detail. In this figure, a comparison between the wings 22 not bent to the cloth front shown by the dashed-dotted line and the wings 1 bent to the weave side shown by the solid line shows the following.

 In other words, in order to open the warp 6 up and down while forming an opening angle, the straight-type feather blades 22 need to have a waist length H '. In the case of the bent feathers 1 having the shape of a "U", the length H is sufficient. For this reason, the length of the material can be reduced, and the weight of the material can be reduced.

However, as can be seen from the geometric relationship between the opening angle and the bent feather 1 shown in Fig. 1a, the effect of reducing the length H is similar to that of an air jet loom or a levia loom. However, a large effect can be obtained only when the opening angle α inevitably increases. However, when the shedding amount of the warp is small, as in the case of a water jet loom, that is, when the shedding angle α is small, not only little effect is exhibited, but The extra manufacturing step of bending the wings 1 to the weave front may even result in undesired side effects of increased manufacturing costs. Therefore, it was not considered at all in the water jet loom that the wing was bent toward the cloth front side.

 In the case of water jet looms operated at high speeds, the width of the wings should be increased or the thickness of the wings should be increased in order to avoid the above-mentioned problems caused by the lack of rigidity caused by the increase in speed. Must be increased. However, on the other hand, if the thickness of the wing is increased, the gap through which the warp passes must be reduced correspondingly. For this reason, the warp becomes susceptible to damage such as fluffing due to being rubbed by the mosaic feathers, and causes a problem that the driving resistance of the mosaic becomes large. On the other hand, if the width of the wings is widened, the fate of the water jet loom that uses weft insertion water will cause a greater amount of water due to capillary action (surface tension) between the wings that are juxtaposed. The sizing agent adhered to the warp is dissolved out by the action of the retained and held large amount of water. If a warp yarn that lacks a protective layer called glue is rubbed off due to such an action and is rubbed, the warp yarn is more susceptible to damage, which naturally causes fluffing and the like. is there. Furthermore, if a large amount of water is retained between the wings, the water flows as the wings swing, causing vibrations in the wings.

Furthermore, when weaving a woven fabric using a multifilament as a warp in a water jet loom having a small warp opening, that is, a water jet loom having a linear warp, it is possible to prevent the warp from fuzzing and warp breakage. Preventive measures Conventionally, a method of attaching a sizing agent to a warp, a method of applying a warp, and a method of entanglement of a warp have been adopted. Naturally, in the case of a weakly twisted yarn having a small number of twists, compared to a medium twisted / strongly twisted yarn. Some of the filaments constituting the yarn have a small number of filaments. Since the rubbing is rubbed by the wings, the filament is liable to be cut off, making weaving difficult. The same is true of a substantially non-twisted filament yarn provided with interlacing points by interlace addition. Therefore, on weaving, middle-twisted yarn and strong-twisted yarn having a number of twists of 50,000 to 300,000 per lm are not easily fluffed, and generally, without fixing the filament with a sizing agent. Weaving can be performed. On the other hand, for weakly twisted yarns with a twist of 500 or less per m, the filament is fixed with a sizing agent. Can be woven easily. On the other hand, among the low-twisted yarns, those with a relatively small number of twists of less than 300 twists per lm and substantially non-twisted multi-filament yarns with interlacing points by interlace processing Weaving is very difficult, and even non-twisted multifilament yarns, which have no twist and no entanglement point, are difficult to weave at practical speeds.

 Solving the problems related to the conventional water jet loom described above has not been fundamentally solved even though the industry has long aspired.

In addition, due to the recent diversification of textile products, thinner filaments have been used, especially in polyester fiber woven fabrics, which are often used for outerwear, which requires a high degree of fitting. , And untwisted Fabrics using rufilament yarn are also being required. In the case of weaving such a woven fabric, 10 to 60 entangled points per lm are formed on the non-twisted yarn by interlacing, and the filament force is varied during weaving. Weaving is performed in a state where only some of the filaments are protected from damage due to rubbing. Untwisted points formed by the interlacing process are unwound during weaving, and when weaving, only a few interlacing points per m remain, so no untwisted multifilament The same woven fabric as that using yarn can be woven. However, even if the above measures are taken, it is extremely difficult to weave a woven fabric using such a multifilament yarn with a water jet loom, and the water adhering to the fabric is difficult. There were problems that the quality of the woven fabric was degraded due to the breakage of the warp filaments violently rubbed by the feathers, and that many stoppages occurred due to the breakage of the warp.

 [Disclosure of the Invention]

 SUMMARY OF THE INVENTION An object of the present invention is to provide a water jet loom material which has very little warp abrasion damage caused by the material blades and can realize stable and high-speed weaving.

 Another object of the present invention is to provide a weaving method capable of weaving a thermoplastic synthetic fiber woven fabric such as a polyester yarn using a nearly non-twisted multifilament yarn more easily and at a high speed. Is to do.

 [Means for solving the problem]

According to the present invention, according to the present invention, the upper part of the water jet loom is bent toward the cloth front side in a “U” shape while being attached to the water jet loom. The water jet loom is characterized in that it is provided with a wing having a different shape.

 Further, according to the present invention, a substantially non-twisted heat having a number of twists of 100 or more per warp or an interlacing point by interlacing is used as the warp using the above-mentioned wool. A warp consisting of a plurality of plastic synthetic fiber multi-filament yarns is used, and the wings are bent in the shape of the letter "ku" so that the wings and the warp when the wing reaches the receding end are formed. A weaving method is provided wherein a weft is inserted into a warp shed by a water jet in a state where the distance between the contact point of the weft and the weaving cloth is reduced.

 [Brief description of drawings]

 FIG. 1a is a side view for explaining the height (H) of the rapier loom and the air jet loom, and FIG. 1b is a side view of the feather blade of the air jet loom.

 FIG. 2 is a side view of the wings attached to the water jet loom, and FIGS. 3 and 4 are side views for explaining the difference between the weaving method of the present invention and the conventional weaving method. .

FIG. 2 is a side view illustrating an embodiment of a water jet loom according to the present invention, in which 1 is a feather blade, 2 is an upper channel, and 3 is an upper channel. Is the wing retainer, 4 and 5 are the upper and lower coils, respectively, and 6 is the warp. Here, the water injection loom 10 of the present invention is configured to include the above-mentioned injection blade 1, the upper channel 2, the injection blade holding metal fitting 3, the upper coil 4, and the lower coil 5. I have. In addition, the upper and lower ends of the blade 1 are fixed to the upper channel 2 and the blade holder 3, respectively, and are adjacent to each other. A large number of the blades are arranged side by side in the direction perpendicular to the paper surface of FIG. 2 via the upper coil 4 and the lower coil 5 so that the blades are held at a predetermined interval for passing the warp. Further, the wing 1 is attached to a woofer for a water jet loom, and has a shape in which an upper portion thereof is bent to a weave front side in a “U” shape, and The depth on the upper side along the traffic direction is smaller than the depth on the lower side. The lower part of the blade is fixed to the blade holder 3 with its extending direction inclined toward the non-woven front side.

 In the figure, reference numerals A, B and C indicate three positions taken by the same wing 1 which oscillates while drawing an arc as shown by reference numeral S during weaving. The position where the wing 1 is farthest from the weaving side (the state where weft is inserted by the water jet from the water jet nozzle), the position C is the position closest to the weaving side (the state where the weft is beaten on the warp), and B Indicates the state at the intermediate position between A and C, respectively. From this figure, it can be easily understood that when the blade 1 swings while drawing an arc, the centrifugal force acts as an inertial force in the normal direction to the arc. Would.

In the water jet loom made as described above, the feature of the present invention is that the upper part is the cloth front side with the feather 1 attached to the feather (in FIG. 2, (Right side) It is bent in the shape of "ku". In this case, if the “K” shape is further defined, there is a bending point above the point where the mosaic comes into contact with the weave, and the upper part of the mosaic is bent toward the weave. It can be said that the position of this bending point is 0.5 mn! ~ 20 111 111 from the cloth fell, especially 0.7 mm ~ 15 mm. Preferably in the range. Further, the bending angle is preferably in the range of 20 ° to 45 °, particularly preferably in the range of 25 ° to 40 °.

 On the other hand, the conventional wing has only a straight shape as shown by the dashed line in FIG. 1a, and is bent in the shape of a "ku" toward the weave. There is no such exquisite ingenuity as in the present invention relating to the fact that there is a dimensional difference in the depth width between the upper side and the lower side of the wing.

 The fact that the present invention is employed instead of the conventional one is based on the following findings of the present inventors.

First, the inventors of the present invention are in the process of earnestly examining the speed of weaving of a water jet loom. One of the major factors hindering the speed of weaving is that the swinging (arc motion) of the wings causes Nosa knows that this is due to the fact that the direction in which the inertial force (centrifugal force) acts on the water held in the wing and the direction in which the wing extends linearly upwards. It starts with this. In such a conventional wedge, the water held between the wedges 1 by capillary action (surface tension) tends to move upward due to the centrifugal force. At the upper end of the wing, there is an upper channel 2 that blocks the water, so that the upper channel 2 prevents the movement of water and drains the water held between the wing. Did not perform well. Further, the water retained between the wings elutes (1) a sizing agent serving as a protective layer of the warp inserted between the wings, thereby causing abrasion damage to the warp. (2) The water attached to the wing causes the weight of the wing to increase, and the movement of the water caused by the sway of the wing. (Vertical movement along the wings), the vibrations of the wings are generated. Based on these findings, the inventor devised a technique for draining the water retained between the feathers and stagnating the water, and finally arrived at the feather of the present invention.

There is 0 "'.

 By knowing in detail the process and background of deriving the present invention described above, it is easy to see how many advantages of the present invention described below as compared with the conventional ones. You will understand.

 In other words, the conventional feather wings extend straight and straight in the same direction as the direction of action of the centrifugal force, and have a shape in which there is an upper channel for blocking water in this extending direction. However, in the wing 1 of the present invention, the upper part is bent in the shape of a "ku" on the cloth front side, and this plays an important role in draining. Here, the action related to the drainage of the wing 1 bent in the shape of a “K” is based on the case where the centrifugal force acts on the water held at the lower part of the wing 1 and the upper part. It is easy to understand if we consider two cases, the case where centrifugal force acts on the retained water.

In other words, regarding the former case in which centrifugal force acts on the water held at the lower part of the blade 1, in the position A in FIG. The water that is ejected and thus held between the wings 1 receives centrifugal force caused by the swinging (circular motion) of the wings 10, and the lower part of the wings 1 extends. Move along the direction. At this time, the upper part of the feather wing 1 is bent in the shape of a "ku" on the cloth front side, so let's move further upward from the bent part There is no longer any obstacle such as upper channel 2 that plays the role of blocking the water. Therefore, the water retained at the lower part of the wing 1 is shaken off from the wing by the centrifugal force as it is.

Next, regarding the latter case, in which the centrifugal force acts on the water held on the upper part of the blade 10, in the present invention, the water is swollen (circular motion) with the blade 10 in the present invention. An extremely important role plays a role that is devised so that the acting direction of the acting centrifugal force does not coincide with the extending direction of the upper part of the blade. That is, the water held by the wing 1 naturally moves in the normal direction (radial direction of the arc) of the locus (arc) along which the wing moves due to the centrifugal force acting on the water. If, at this time, a conventional wedge is used, in which the wedge is already present in the direction of action of the centrifugal force acting on the water, the water simply moves upward along the wedge and continues to the upper channel. It is already mentioned that she was blocked by Osa feathers and kept in custody. In other words, in order to prevent the water retained in the wings from staying on the wings, the direction in which the centrifugal force acts and the direction in which the wings extend must be the same. . In view of this, the blade 1 of the present invention employs a shape in which the cloth is bent in the shape of a letter "K" on the cloth front side, whereby water is applied to the blade 1 by surface tension with the blade 1. The direction in which they can move while being restrained and the direction in which centrifugal force acts are clearly different. Due to this extremely ingenious device, the water retained in the wing 1 is released from the restraint due to the surface tension with the wing 1, and the trailing edge of the wing 1 (with respect to the warp insertion direction) is centrifugally applied. From the front edge of the fabric It becomes.

 Further, in a preferred embodiment of the pusher according to the present invention, the depth of the upper side of the feeder wing 1 is smaller than the depth of the lower side along the warp insertion direction.

 As a result, the water attached to the lower side of the blade 1 by the action of surface tension (capillary action) tends to move from the lower side to the upper side under the influence of centrifugal force, causing a sharp increase in the depth width. This causes a sharp decrease in the adhesion of water to the wings 1 that occurs with a significant decrease. For this reason, the water adhering to the wing 1 is easily shaken off from the wing 1 by the action of the centrifugal force, and accordingly, the amount of water retained on the upper side can be reduced. .

 In addition, as can be seen from the swinging state of the wing 1 drawn in an arc in Fig. 2, a greater force acts on the root (lower end) of the wing than that of the tip. Although rigidity is required, the width of the lower part of the blade 1 can be made wider than that of the upper part, and the strength and rigidity of the blade 10 can be sufficiently secured. Furthermore, the depth of the upper part can be reduced, and the weight of the wing 1 can be reduced. As a result, the weight of the wing itself can be reduced.

Further, in another preferred embodiment of the present invention, the extending direction of the lower part of the wing 1 is inclined toward the non-woven front side, and the lower end of the wing 1 is attached to the wing holding bracket. Fix it. With this structure, when viewed from the weaving side, the front of Wosa 10 is concave in the shape of a "ku" (the hatched portion in Fig. 2). When inserting the weft between the open warp threads, the "-" As a result, it can serve as a guide space for the weft to make the weft fly smoothly. And it goes without saying that stable weft insertion can be realized.

 Next, with reference to FIGS. 3 and 4, the operation of the method for weaving a thermoplastic synthetic fiber woven fabric using the above-mentioned wrinkle in a water jet loom will be described.

 In the method of the present invention, a "U" -shaped wedge is used as a means for preventing fluffing of warp and breakage of warp. FIG. 3 is a schematic side view showing the difference between the weaving method of the present invention and a conventional weaving method using a straight wrinkle. In the present invention, the "10" bent "10" is shown by a solid line, and the conventional linear "21" is shown by an imaginary line. Further, the pushers 10 and 21 are shown at both the forward end position and the backward end position, and show an example in which the swing angle of the pusher is equal to that of the conventional method.

A first feature of the weaving method of the present invention is that the stroke S of the wing 1 against the warp 6 opened upward can be significantly shorter than the stroke T of the conventional method. . In other words, by bending the upper part of the wing 1 toward the weave 15 side in the shape of a `` K '', the contact point 16 between the wing 1 and the warp 6 when the Can be moved farther to the cloth fell 15 side than the contact point 23 when using the straight feathers 22 of this type.On the other hand, the position where the feathers are in contact with the weave is the conventional method. Therefore, the stroke of the wing 1 against the warp 6 can be reduced, and the shortened portion is formed by the tip of the wing, that is, the wing. Faster Since the warp is rubbed at a high speed, it is possible to reduce damage to the warp caused by the rubbing with the wings to the extent that the rubbing stroke is shortened.

 On the other hand, in the example shown in FIG. 3 in which the swing angle 0 of the wedge is equal, when the method of the present invention is used, the flight path of the weft becomes narrower by the hatched area 17 in FIG. However, since the water jet carrying the weft 18 diffuses into a circular area centered on the weft, the hatched area 17 in the figure shows the water jet 19 for weft transport and the weft 1 This is the part that has not functioned as effectively as the passage 8 and the decrease in the cross-sectional area of the weft passage due to the bending of the wing 1 in the shape of a `` Hardly ever. On the contrary, since the weft passage has a shape close to a circular shape, which is the diffusion shape of the water jet, water droplets in the peripheral area that do not contribute to the transfer of the weft collide with the oscillating wing 1 and are scattered. This is rather effective in reducing the damage of the warp caused by colliding with the warp. In other words, by bending the upper part of the wings into a く shape, water droplets that do not contribute to the conveyance of the weft that have spread greatly upward will collide with the bent wings and scatter. Thus, the second feature of the weaving method of the present invention is that water droplets having a high velocity can directly reduce the damage to the warp due to collision with the warp.

The front edge of the bent portion where the wings are bent in the shape of a “ku” is an arc-shaped portion 20. The position where the cloth collides with the cloth when hitting is set to a position slightly below the point of contact 12 between the linear portion 11 below the leading edge of the blade and the arcuate portion 20. As a result, the swing angle of the sled is Without changing the position, the weft passage at the time of weft insertion can be formed into a shape that surrounds the circular jet water by the “U” shape of the wing 1.

FIG. 4 is a view for explaining that the above-described operation of the present invention can be sufficiently exerted even when the swing angle 2 of the pusher is larger than the swing angle i in the conventional method. In FIG. 4, a blade 10 having a blade 1 bent in the shape of a "ku" is used, and the swing angle _{2 of the} blade to which the blade is attached is adjusted. The swing angle is slightly larger than that of the conventional method. In this case, the decrease in the weft passage 17 due to the bending above the wedge is caused by the increase in the weft passage in the lower part of the wedge due to the increased swing angle of the thread. When supplemented, the weft passage is larger than that of FIG. 3, and thus the weft insertion can be made easier. Also in this case, the stroke of the wing 1 against the warp 6 above the opening can be made much smaller than the stroke obtained by using the straight wing 22. Also, since the bent wings can cause the jet water greatly deviated above the weft 18 to collide with the upper part of the wings bent in the shape of a letter "K" and be scattered. The same effect as described in FIG. 3 can be exerted, and the damage of the warp 6 can be greatly reduced.

In addition, when the weaving method of the present invention is used, the characteristics of the above-described "ku" -shaped material 10, that is, the material is held between the material feathers at a position below the bending point of the material feather. Due to the centrifugal force acting in the direction of arrow A in Fig. 4 with the rocking of the wing, the bent water Per minute, the characteristic of being able to be shaken off behind the wings (anti-weaving) can significantly reduce the amount of water retained between the wings, The third feature is that the damage of the warp caused by the high-speed crossing of the warp between the waters can be greatly reduced.

 Furthermore, according to the method of the present invention, since the interference between the upper end of the dough 10 and the pig iron 14 is avoided, the distance between the pig iron 14 and the cloth fell 15 is reduced. And the overall vertical stroke required to obtain the same warp shedding angle can be made smaller than in the conventional method, which also reduces the damage to the warp. It has the fourth feature of being able to do things.

 Each of these features can be attributed to the fact that only some of the filaments are damaged by rubbing against Cross-filtration between the retained waters causes the filaments to be easily separated from each other. For weakly twisted multi-filament yarns, and by providing an interlacing point by interlace processing having similar weaknesses By acting more effectively on untwisted multifilament yarns, the method of the present invention allows the use of a weakly twisted or substantially untwisted yarn with interlacing points due to inlay. It becomes possible to weave thermoplastic synthetic fiber fabrics using warps more easily and at higher speed without damaging the warps.

According to the weaving method of the present invention, since the weft is not subjected to crimping, the weft 18 is less likely to dance while flying, and thus the warp shedding can be reduced. More effectively exert the above action of Can be done.

 Hereinafter, the present invention will be described more specifically with reference to examples.

 [Example 1]

 A weaving test was carried out using a water jet loom equipped with a wing provided with a wing having the same shape as the wing illustrated in FIG. At this time, the depth of the wing 1 in the warp insertion direction is 2.2 mm on the upper side and 3 mm on the lower side, and the mounting density of the wing is 48 sheets / inch, and The angle of inclination of the upper half with respect to the lower half to form a character shape was 30 °. In addition, the contact position of the front of the cloth with the cloth fell is set 1 mm below the point where the arc (R part) of the bent part of the cloth and the straight line of the lower half of the cloth are connected. .

 In the weaving test using the above equipment, 50 denier / 24 fi 1 interlace entanglement points of 30 denier / 24 fi1 were used, and non-twisted, glueless polyester filament yarn was used. Taffeta fabric was woven at a weaving machine rotation speed of 800 rpm, using a 75 denier Z36 fi1 substantially non-twisted polyester filament yarn as the weft. Here, in the present invention, the number of times the loom is stopped (time / day) is taken as a factor that can quantify the effect, and the number of times the loom is stopped (time Z / day) is examined. (See Table 1).

As a comparative example, with regard to a conventional woofer having straight wings as well as the conventional woofer, the conditions other than the woofer were exactly the same as those in the first embodiment, and the number of stops (time Z Days and units) (see Table 1). table 1

表 1から明らかなように、 本発明のォサを使用した場合は、 従 来のォサと比較すると、 経糸因と機械因とによる停台回数が大幅 に減少していることが分かる。 また、 経糸因による停台の原因を 詳細に調べると、 経糸が擦過されて切れることに起因しているこ とが分かり、 本発明のォサを使用した効果が明らかであった。 ま た、 製織後の織物を調べた結果、 表 1 には示さないが、 明らかに 経糸に発生する毛羽数において、 本発明では、 従来のォサと比較 して減少していた。 更に、 機械因による停台に関しても詳細にそ の内容を調べると、 開口 した経糸の間へ緯入れする緯糸の先端も つれと折り返しの減少による ものであって、 本発明のォサが従来 のものと比較して、 緯糸の飛走の安定に効果があるこ とが分かつ た。

As is evident from Table 1, when the wool of the present invention is used, the number of stops caused by the warp factor and the mechanical factor is significantly reduced as compared with the conventional wool. Further, when the cause of the stop caused by the warp factor was examined in detail, it was found that the cause was caused by the fact that the warp was rubbed and cut, and the effect of using the wrinkle of the present invention was clear. Further, as a result of examining the woven fabric after weaving, although not shown in Table 1, the number of fluffs generated in the warp was clearly reduced in the present invention as compared with the conventional wool. Furthermore, when the details of the stop caused by mechanical factors are examined in detail, it is found that the end of the weft inserted into the space between the opened warps is reduced due to the reduction of the warp and the turnback. It was found that it was more effective in stabilizing the flight of the weft yarns than the ones.

As described above, when the wool of the present invention is used, the water held in the wool can be drained extremely effectively, and the weight of the wool can be reduced. The water held by the wings Even when glue is attached to the warp yarn, the dissolution of the glue can be greatly suppressed. As a result, the weight of the material, which is the rate-limiting factor in speeding up the weaving of the water jet loom, can be reduced, and the generation of vibrations due to the upward and downward movement of the water held by the material wings can be greatly reduced. In addition, the glue from the warp is significantly less eluted, and there is an extremely remarkable effect that the warp does not fluff or break due to the rubbing of the warp feathers.

 Furthermore, by tilting and fixing the lower end of the wing to the wing holding bracket, a wider guide space can be formed to stably guide the flight of the weft when weft is inserted. This also has the effect that the weft insertion can be realized.

 [Example 2]

The feather wing has the same shape as the feather wing illustrated in FIG. 2, and the upper part is bent in the shape of a letter "C" at 35 ° to the cloth front side, and the upper part is lower than the lower part. Using a woofer with a narrow wing (density: 19 wings / cm), the warp yarn has a 50 de Z 24 fi 1 interlace interlacing point of 25 pcs / m. Using a non-twisted, non-glueed polyester filament, using a substantially untwisted polyester filament of 75 de Z36 fi1 for the weft, weft at a rotation speed of 75 rpm A polyester filament woven fabric with a density of 47 Zin was woven. At this time, the number of times the loom stops per 24 hours per day is shown in Table 2, and the effect of using the "ku" -shaped bent stitch is significant. Table 2

[Example 3]

In the same manner as in Example 2, the upper part is bent to the front side of the weave at 33 ° in a “U” shape, and the upper part is provided with a narrower feather than the lower part (density: (18.5 5 Zcm), the warp has 7 Zm interlace interlacing points of 75 de / 7 2 fi 1 and has substantially no twist other than twisting by unwinding. Use a non-glued polyester filament yarn with a polyacrylic glue attached to it, and use the same type of 75 de Z72 fi 1 polyester filament yarn for the weft. A polyester filament fabric having a weft density of 50 yarns / in at a rotation speed of 700 rpm was manufactured. The number of loom stops at this time is as shown in Table 3, and the number of loom stops can be significantly reduced compared to when a normal wedge is used. Table 3

[Example 4]

As in Example 2, a warp (18 birds / cm) was used as a warp. Nylon filament yarn 70 de / 108 fi 1 is twisted with 300 TZM, and furthermore, 3.5% by weight of a polyacrylic paste is used. The same type of non-twisted nylon filament of 70 de / 108 ii 1 is used for the weft, and the yarn density is 30 yarns / in at a rotation speed of 900 rpm. The fabric was woven. The number of times the loom was stopped at this time is as shown in Table 4. The number of times the loom was stopped was significantly reduced as compared to when a normal wedge was used. This is because the length of the warp was reduced by 7%, and the generation of warp was suppressed. In addition, of the jets jetted from the nozzles, jets other than those necessary to transport the weft collide with the upper part of the bent wedge and change into a mist, which hits the warp very softly. Collision with warp, disturbing warp arrangement and warp The jet that caused the phenomenon disappeared, and the quality of the fabric improved dramatically.

Table 4

[Industrial applicability]

 ADVANTAGE OF THE INVENTION According to this invention, the abrasion damage of the warp which originates in a wool | feather is extremely small, Furthermore, the water jet loom | operator which can implement | achieve stable and high-speed weaving is provided. By using a water jet loom that employs this type of weaving, it is possible to weave thermoplastic synthetic fiber fabrics such as polyester yarn using non-twisted multifilament yarns more easily and at high speed. Yes, its industrial significance is enormous.

Claims

 Scope of the request: Attached to the water jet loom material, the upper part of which is provided with a material feather having a shape bent toward the cloth front side in a "U" shape. A water jet loom. 2. The water jet loom according to claim 1, wherein the depth of the upper part of the wing along the warp insertion direction is smaller than the depth of the lower part. 3. The water jet loom according to claim 1, wherein the extension direction of the lower part of the blade is inclined toward the non-woven front side, and the lower end of the blade is fixed to the blade holder. . . A substantially non-twisted thermoplastic synthetic fiber multi-filament having a twist number of at least 100 turns per lm or an interlacing point by interlacing as warp, using the material according to claim 1 to 3. Between the contact point between the wings and the warp when the wings reach the receding end by bending the wings in the above-mentioned "C" shape using the warp yarns consisting of A method for weaving a thermoplastic synthetic fiber woven fabric, comprising inserting a weft yarn into a warp shed by a water jet with the distance of the thermoplastic synthetic fiber shortened. The heat according to claim 4, wherein the weft is a crimp-processed substantially non-twisted thermoplastic synthetic fiber multifilament yarn, and the rotation speed of the loom is set to 5500 rpm or more. Method of weaving plastic synthetic fiber fabric. Interlacing of 10 to 60 warps per lm The method for weaving a thermoplastic synthetic fiber woven fabric according to claim 4 or 5, which is a substantially non-twisted, non-paste polyester multi-filament yarn having an interlacing point.