JP2008156104A - Yarn feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a yarn feeder capable of feeding a yarn without causing unwinding twist by suppressing the swing of the yarn in the traversing direction. <P>SOLUTION: This yarn feeder comprises guide parts 17a, 17b always in contact with a flat yarn 1 from the both sides in the traversing direction (direction of axis of raw yarn). Since the swing of a flat yarn 1 in the traversing direction can be suppressed, the unwinding twist thereof can be prevented from occurring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a yarn supply device for supplying yarn to a loom or the like in a state where no twist is generated.

  For example, a yarn supplying device disclosed in Patent Document 1 includes a yarn supplying body (rolling ball) formed by winding a yarn by reciprocating (traversing) the yarn in an axial direction on a yarn axis that can be rotated by a driving unit. The storage part pools the yarn sent out from the wound ball in a U shape, and the guide slit provided immediately before the storage part. The guide slit regulates the runout in the traverse direction of the yarn drawn from the wound ball.

JP 2000-273745 A

  However, in the guide slits as described above, since the deflection of the yarn in the traverse direction is allowed by the slit width, the deflection cannot be suppressed completely. The yarn may be twisted in the traverse direction to cause twisting and twisting, so-called untwisting. If the unwound and twisted yarn is supplied to the loom as, for example, a weft, the weft having a non-uniform width is woven into the woven fabric, which may cause a problem in the finish and strength of the product. is there.

  An object of the present invention is to provide a yarn feeding device that can completely prevent the yarn from moving in the traverse direction and prevent unwinding and twisting.

  In order to solve the above-mentioned problems, the present invention provides a yarn supply device comprising a yarn supply body formed by traversing and winding a yarn around a rotatable yarn axis, and the yarn supply device for feeding the yarn from the yarn supply body. A plurality of guide portions having a central axis orthogonal to the axial direction of the raw yarn shaft core on the leading side in the yarn feeding direction of the yarn supply body and sandwiching the yarn in contact with each other from both axial directions of the raw yarn shaft core are provided. It is characterized by that.

  As described above, in the yarn supply device of the present invention, a plurality of central axes that are orthogonal to the axial direction of the raw yarn shaft core, that is, the direction in which the yarn drawn from the raw yarn supply body swings (hereinafter referred to as the traverse direction) are orthogonal. A guide part is provided. By sandwiching the yarn drawn from the raw yarn supply body with the guide portion from both sides in the traverse direction, it is possible to completely suppress the vibration in the traverse direction of the yarn unwound from the raw yarn supply body. Occurrence of twisting can be prevented.

  If the plurality of guide portions are provided apart from each other in the yarn feeding direction, a part of each guide portion can be arranged to overlap in the yarn feeding direction. As a result, the guide portions can be reliably brought into contact with both sides of the yarn in the traverse direction, so that yarn deflection can be more reliably suppressed.

  In this yarn supplying device, it is important to keep the yarn tension constant in the yarn unwinding step. This is because if the tension of the yarn is instantaneously relaxed, the yarn may be twisted. Therefore, if a guide portion is provided between the raw yarn supply body and the guide portion and this guide portion is brought into contact with the yarn and the yarn is fed in the yarn feeding direction, the yarn tension can be kept constant. .

  By the way, as shown in FIG. 8, the normal yarn 1 is wound with an angle (this angle is referred to as a twill angle and indicated by θ in FIG. 8) with respect to a direction orthogonal to the yarn axis 11a. If the yarn wound in this way is pulled out in a direction perpendicular to the core axis of the yarn, the yarn may be twisted. Therefore, the yarn needs to be pulled out in the direction of the traverse angle θ. Therefore, as shown in FIG. 9, the yarn 1 fed from the direction of the twill angle θ is sent out toward the guide portion 17 via the guide portion 16. At this time, for example, as shown in FIGS. 9 and 10, if the contact surface of the guide portion 16 with the yarn is formed in a cylindrical shape, the bus bar of the guide portion 16 and the yarn feed direction are not orthogonal to each other. Sticking may occur (indicated by X in FIG. 10), and the yarn may be twisted. Therefore, when the curvature of the bus bar is set so that the guide bar has an arc-shaped bus bar and the bus bar and the thread feeding direction are always orthogonal at the contact point between the guide unit and the thread, Dubbling can be avoided and twisting and twisting can be prevented more reliably.

  In the case where such a guide portion is provided, the supply angle of the yarn to the guide portion may change on a plane orthogonal to the traverse direction when the raw yarn of the raw yarn supply body decreases. If this angle changes, the predetermined shape of the generatrix of the guide portion cannot be orthogonal to the yarn feeding direction, and there is a possibility that the yarn may become dubbed. Therefore, the guide portion is always at a constant angle on a plane orthogonal to the axial direction (traverse direction) of the yarn axis by contacting the yarn fed from the yarn supply body between the yarn supply body and the guide portion. Such an inconvenience can be avoided by providing an auxiliary guide for supplying the heft yarn.

  In addition, when using a flat yarn, the yarn is prevented from being shaken by sandwiching the yarn from both sides in the traverse direction with the plurality of guide portions, and at the same time, the yarn is twisted by 90 ° from a state where the yarn is wound around the raw yarn shaft core. It will be. For example, in the case of a yarn supply device provided with a storage unit, which will be described later, if the yarn is twisted in this way, the yarn may be twisted when supplied to the storage unit. Therefore, a sub-guide portion having a central axis inclined with respect to the axial direction of the guide portion is provided on the yarn feeding preceding side of the guide portion, and the yarn is fed while being in contact with the sub-guide portion, thereby returning the twist of the yarn. be able to.

  For example, when a sub guide portion having a central axis that is perpendicular to the central axis of the guide portion is provided at one location on the yarn feed preceding side of the guide portion as such a sub guide portion, the yarn suddenly moves between them. Since it is twisted, the twist may not be eliminated. In view of this point, the auxiliary guide portions are provided at a plurality of locations separated in the yarn feeding direction, and the angle between the central axis of each auxiliary guide portion and the central axis of the guide portion increases stepwise as the distance from the guide portion increases. Then, since the twist of the yarn twisted by the guide portion can be returned in stages, the twist of the yarn can be reliably eliminated.

  When such a yarn supply device includes a storage unit that pools the yarn unwound from the raw yarn supply body into a U shape by applying wind pressure, for example, when supplying a weft yarn to a loom, a constant amount supplied to the loom Since the yarn of a length can be pooled while preventing entanglement, the weft yarn can be stably supplied to the loom.

  As described above, according to the present invention, it is possible to obtain a yarn supply device that can completely suppress the yarn swinging in the traverse direction and can supply the yarn without causing untwisting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, the case where the yarn supply device according to the present invention is used as a weft supply device for supplying a weft to a loom is shown. FIG. 1A shows a front view (partial cross-sectional view) of a yarn supply device 100 according to this embodiment. The yarn supply device 100 includes a unwinding unit 10 and a storage unit 30, and sends a yarn unwound by the unwinding unit 10 to the storage unit 30, and a predetermined length that is intermittently supplied to the loom as a weft yarn. The split yarn is stored in the storage unit 30.

  The unwinding unit 10 includes a yarn supply body 11 formed by traversing and winding a yarn on a yarn shaft core 11a. The traverse width of the yarn wound around the raw yarn shaft core 11a is not particularly limited, and can be appropriately set in the range of 1 μm to 1000 mm according to the size of the yarn. An auxiliary guide roller 15 as an auxiliary guide portion, a guide roller 16 as a guide portion, guide rollers 17a and 17b as guide portions, a sub guide roller 18a as a sub guide portion, 18 b, 18 c, the tension device 19, and the drive roller 20 are sent to the storage unit 30. The flat yarn 1 is driven in such a manner that the drawing original yarn shaft core 11a can be rotated forward and backward by the drive unit 14. The raw yarn supplier 11 is detected by an ultrasonic sensor 12 and a raw yarn detection sensor 13. In this embodiment, the case where the flat yarn 1 is used as the yarn is shown.

  The ultrasonic sensor 12 is a sensor capable of ignoring fluff and dust, and senses (measures) the distance from the flat yarn 1 (raw yarn) wound around the raw yarn shaft core 11a. The sensed signal is fed back to a servo motor and a brake (not shown) of the drive unit 14 to control the supply amount of the flat yarn 1 (the number of rotations of the raw yarn shaft core 11a), thereby flattening with stable tension. The function of feeding the yarn 1 into the storage unit 30 is achieved.

  The raw yarn detection sensor 13 can identify the colors of the flat yarn 1 and the raw yarn shaft core 11a. When the raw yarn of the raw yarn supply body 11 decreases, the sensor 13 detects the change in the color and stops the loom just before the raw yarn disappears. As a result, the yarn is prevented from being sucked into the storage unit 30, and the raw yarn can be replenished smoothly.

  The drive unit 14 has a motor (not shown), and actively drives the original yarn shaft core 11a to rotate in the yarn feeding direction with this motor. By controlling the rotational speed of the raw yarn shaft core 11a, that is, the rotational speed of the motor while sensing a signal from a tension device 19 to be described later, the yarn is fed into the storage unit 30 while maintaining a constant tension. Can do. The motor control method is not limited to the method of controlling at the rotational speed as described above, but the method of controlling by the rotational torque of the motor, or by generating a braking force on the original yarn shaft core, and adjusting the braking force, It is also possible to adopt a method by brake control for adjusting the delivery amount. As a method for generating the braking force, for example, a method in which driving is performed in a direction opposite to the yarn feeding direction, a method in which a brake device other than the motor is provided, or the like can be given.

  The auxiliary guide roller 15 is a cylindrical roller having a rotation axis parallel to the traverse direction. The yarn feeding direction is bent by bringing the auxiliary guide roller 15 into contact with the yarn. Thus, even when the amount of the raw yarn wound around the raw yarn shaft core 11a is reduced, the yarn can be supplied to the guide roller 16 at a constant angle on a plane orthogonal to the traverse direction (on the paper surface of FIG. 1). it can.

  The guide roller 16 is a so-called drum-type roller having a rotation axis parallel to the traverse direction and having an outer peripheral surface 16a formed by rotating an arc-shaped generatrix around the rotation axis (see FIG. 2). When the outer peripheral surface 16a of the guide roller 16 comes into contact with the flat yarn 1, the flat yarn 1 fed in the direction of the traverse angle from the raw yarn supply body is sent out in the direction of the guide rollers 17a and 17b. At this time, the shape of the outer peripheral surface 16a of the guide roller 16 is determined in consideration of the traverse angle of the flat yarn 1 wound around the raw yarn shaft core 11a, the distance between the guide roller 16 and the guide portion 17a, and the like. And the flat yarn 1 are set so that the generatrix of the outer peripheral surface 16a of the guide portion 16 and the yarn feeding direction are always orthogonal to each other at each contact point of the flat yarn 1. As a result, the flat yarn 1 can be stably brought into contact with the guide roller 16 without causing the flat yarn 1 to be unwound, so that untwisting of the yarn can be prevented. In the present embodiment, the rotatable guide roller 16 is used as the guide portion, but the present invention is not limited to this. For example, as shown in FIG. 5, a fixed guide portion 16 'curved in an arc shape may be used. According to this, while the structure of the guide portion can be simplified, the frictional force with the yarn becomes large. Therefore, in the case where there is a concern about scraping or yarn breakage due to friction, it is preferable to use the rotary guide portion described above. . Or although illustration is abbreviate | omitted, you may employ | adopt the swing-type guide part which swings a cylindrical member to a traverse direction with a swing mechanism.

  The guide rollers 17a and 17b are rollers having a central axis perpendicular to the traverse direction. The plurality of guide rollers 17a and 17b pinch the flat yarn 1 from both sides in the traverse direction so that the vibration of the flat yarn 1 in the traverse direction can be completely suppressed. That is, as shown in FIG. 2, in the guide roller 16, the flat yarn 1 is shaken in the traverse direction (indicated by a dotted line and a dashed line in FIG. 2), but the flat yarn 1 is sandwiched between the guide rollers 17 a and 17 b. Therefore, this fluctuation is suppressed. In the present embodiment, as shown in FIG. 2, the guide rollers 17a and 17b are provided apart in the yarn feeding direction. Thereby, since a part of guide roller 17a, 17b can be arranged in piles with respect to the approach direction of the flat yarn 1 to the guide roller 17a, it can be made to contact with the flat yarn 1 reliably. As described above, the flat yarn 1 is sandwiched between the guide rollers 17a and 17b in a contact state, so that the flat yarn 1 is prevented from being shaken in the traverse direction, and at the same time, twisted by 90 ° from the state where the flat yarn 1 is fed from the raw yarn supply body 11. It is done. The number of guide rollers arranged is not limited to this, and for example, as shown in FIG. 6, a guide roller 17c may be further provided on the yarn feed preceding side. Thereby, the fluctuation | variation of the traverse direction of the flat yarn 1 can be suppressed more reliably. Alternatively, as shown in FIG. 7, the guide rollers 17 a and 17 b may be arranged so as to face each other with the flat yarn 1 as the center, and the flat yarn 1 may be sandwiched between them. According to this, the arrangement space of the guide portion can be made compact. Further, in FIG. 2, the flatness of the yarn is exaggerated for easy understanding of the twist of the flat yarn 1.

  Sub guide rollers 18a, 18b, and 18c that contact the yarn from a direction different from the axial direction of the guide rollers 17a and 17b are provided on the yarn feed preceding side of the guide rollers 17a and 17b. In the present embodiment, the sub guide rollers 18a to 18c each composed of one roller are arranged at a plurality of locations separated from each other in the yarn feeding direction. As shown in FIG. 3, these auxiliary guide rollers 18a to 18c have a central axis inclined in the direction opposite to the twisting direction of the yarn by the guide rollers 17a and 17b (counterclockwise direction in FIG. 3). Specifically, the center axes L1 to L3 of the sub guide rollers 18a to 18c are respectively 15 with respect to the axial direction of the guide rollers 17a and 17b (in FIG. 3, the axial direction of the guide roller 17b is indicated by L0). The angles are 45 °, 45 ° and 75 °. That is, as the distance from the guide rollers 17a and 17b increases, the angle between the axial directions L1 to L3 of the auxiliary guide rollers 18a to 18c and the axial direction L0 of the guide rollers 17a and 17b gradually increases toward 90 °. It is getting bigger. Each of the sub guide rollers 18a to 18c is a yarn that contacts the flat yarn 1 from one side in the traverse direction (sub guide rollers 18a and 18c) and a roller that contacts the flat yarn 1 from the other side (sub guide roller 18b). Alternating in the feed direction.

  Such sub-guide rollers 18a to 18c can return the twist of the flat yarn 1 twisted by 90 ° by the guide rollers 17a and 17b. Further, as described above, the flat yarn 1 is twisted by gradually increasing the angle between the axial directions L1 to L3 of the auxiliary guide rollers 18a to 18c and the axial direction L0 of the guide rollers 17a and 17b. Since it can be returned in stages, twisting of the yarn can be reliably eliminated. In the present embodiment, the angle between the axial direction L3 of the auxiliary guide roller 18c arranged on the most preceding side in the yarn feeding direction and the axial direction L0 of the guide rollers 17a and 17b is set to 75 °. The flat yarn 1 that has passed through the auxiliary guide roller 18c remains twisted by 15 °. This twist is further eliminated by the tension device 19 on the yarn feed preceding side. In order to completely eliminate the twist of the flat yarn 1 with the sub guide roller, the sub guide roller having an axis perpendicular to the axial direction L0 of the guide rollers 17a and 17b between the sub guide roller 18c and the tension device 19 is used. May be further provided. Further, the number of the auxiliary guide rollers is not limited to the above, and more, for example, the angle between the axial direction of the auxiliary guide roller and the axial direction of the guide roller is set in increments of 5 ° between 5 ° and 90 °. A plurality of sub guide rollers may be provided. Further, in order to reliably eliminate the twist of the flat yarn, it is desirable to provide at least three sub guide portions.

  The flat yarn 1 whose twist has been eliminated in this way is sent to the storage unit 30 by the drive roller 20 and the press roller 21 via the tension device 19. The tension device 19 senses the tension of the flat yarn 1 and transmits the information to the drive unit 14 of the raw yarn shaft core 11a. By controlling the feed amount of the flat yarn 1 from the raw yarn supply body 11 based on this signal, the flat yarn 1 can be supplied to the storage unit 30 while maintaining a constant tension at all times.

  The driving roller 20 is rotationally driven by a motor (not shown), and the press roller 21 does not have a driving force and rotates freely. When the flat yarn 1 is pressed by the press roller 21 against the rotationally driven drive roller 20, the flat yarn 1 is fed into the storage unit 30. At this time, the material of the surfaces of the drive roller 20 and the press roller 21 is desirably a material that can obtain a frictional force capable of feeding the flat yarn 1 and is less likely to cause fluffing or thread breakage in the flat yarn 1. . Further, it is desirable that the press roller 21 can adjust the pressing force depending on the material of the flat yarn 1 or the like.

  The flat yarn 1 that has passed through the unwinding unit 10 is fed into the storage unit 30. The storage unit 30 stores the flat yarn 1 fed into the loom in a U-shape in the casing 31 (see FIG. 1A). The casing 31 has a flat shape in which the depth dimension shown in the side view of FIG. 1B is much smaller than the width dimension shown in the front view of FIG. 1A, and the front part 31a and the rear part 31b. , And side portions 31c and 31c. The depth of the casing 31 (direction perpendicular to the paper surface of FIG. 1) is adjusted according to the width of the flat yarn 1, and is adjusted between 1 mm and 100 mm, for example. The height of the casing 31 (the vertical direction in FIG. 1) is adjusted according to the width of the fabric to be manufactured (for example, 50 mm to 1500 mm).

  Air in the casing 31 is sucked by the blower 35 and discharged to the outside (indicated by a white arrow in FIG. 1). At the same time, air is sucked into the casing 31 from the upper end opening of the casing 31. Thereby, since the downward wind pressure is always applied to the flat yarn 1 stored in the U-shape in the casing 31, it is possible to avoid the situation where the yarn gets tangled during storage and to easily manage the length of the stored yarn. Can do. In the present embodiment, the suction-type reservoir using the blower 35 is shown. However, the present invention is not limited to this. For example, air is sprayed from the upper side to the lower side of the casing so as to apply wind pressure to the yarn to form a U shape. You may employ | adopt the injection-type storage part stored in this.

  A buffer box 33 is provided below the casing 31. As described above, by providing the buffer space by the buffer box 33 between the internal space of the casing 31 and the blower 35, the air in the casing 31 can be uniformly sucked. On the other hand, if the blower is arranged directly under the casing 31, the air in the casing 31 is locally sucked, and the yarn pooled in the casing 31 may be violated, and the yarn may be twisted.

  A dust collection unit 34 is provided inside the buffer box 33. By collecting dust and dust floating in the casing 31 by the dust collecting portion 34, the dust is prevented from being sucked into the blower 35 or discharged to the outside.

  The front part 31a and the back part 31b of the casing 31 are formed of a metal plate such as an aluminum plate. The slit 31a2 of the width direction is formed in the arbitrary places of the front part 31a, for example, three places of the same height as the sensors 32a-32c mentioned later. By inserting a transparent acrylic plate or the like into the slit 31a2, the internal state can be observed. The inner surface of the casing 31, particularly the inner surface 31a1 of the front surface portion 31a and the inner surface 31b1 of the back surface portion 31b, is subjected to roughening (so-called satin processing). As a result, it is possible to prevent dirt and dust floating in the casing 31 from adhering to the inner surface of the casing 31 due to static electricity or the like.

  The supply amount of the flat yarn 1 into the casing 31 is controlled by the cooperation of the sensors 32a, 32b, 32c arranged on the side of the casing 31 and the driving roller 20 arranged at the entrance of the storage unit 30. The Specifically, when the supply of the flat yarn 1 into the casing 31 is insufficient, and the sensor 32a attached above does not detect the flat yarn 1, the rotational speed of the drive roller 20 increases, and into the casing 31. The supply speed of the flat yarn 1 is increased. On the other hand, when the supply of the flat yarn 1 into the casing 31 becomes excessive and the sensor 32b attached below senses the flat yarn 1, the rotational speed of the driving roller 20 becomes slow, and the flat yarn 1 into the casing 31 is lost. The supply speed is slow. Still, if the supply of the flat yarn 1 into the casing 31 is excessive, and the sensor 32c attached below senses the flat yarn 1, the drive roller 20 stops. Note that the sensors 32a, 32b, and 32c used here preferably have a sensitivity that does not cause malfunction due to weak static electricity, dust, dust, and the like in the casing 31.

  The flat yarn 1 thus stored in the casing 31 is supplied to the loom via a roller 36 provided near the outlet of the storage unit 30.

  The present invention is not limited to the above embodiment. Hereinafter, other embodiments of the present invention will be described. In the following description, portions having the same functions and configurations as those of the above embodiment are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 4 shows a yarn supply device 200 according to another embodiment of the present invention. This yarn supply device 200 differs from the above-described embodiment in that it does not have the reservoir 30 and the configuration of the tension device is different. The tension device 40 of the yarn supply device 200 includes a tension sensing unit 41, a tension roller 42, and auxiliary rollers 43 and 44 provided at different levels on both sides of the tension roller 42 in the yarn feeding direction. The tension sensing unit 41 senses the tension applied to the flat yarn 1 by meandering through the auxiliary roller 43, the tension roller 42, and the auxiliary roller 44 that are provided in this step, and the tension applied to the flat yarn 1.

  In the above embodiment, each of the sub guide rollers 18a, 18b, and 18c is composed of one roller. However, the present invention is not limited to this. For example, two guide rollers 17a and 17b shown in FIG. It is good also as a structure which pinches | interposes the flat yarn 1 with a roller.

  In the above embodiment, a rotatable roller is used as the guide portion, the sub guide portion, the guide portion, and the auxiliary guide portion. However, if there is no problem such as friction, the fixed guide portion and the sub guide portion are used. A guide part and an auxiliary guide part may be used.

  Moreover, although the case where a flat yarn is used is shown in the above embodiment, the effect of preventing unwinding and twisting can be obtained even when other types of yarn, such as round yarn, are used. In addition, when the raw yarn is wound around the raw yarn shaft core 11a in a tape shape, that is, without traversing, it is considered that the above-mentioned guide portion and sub-guide portion are not necessary, but there is no problem even if these are provided. The raw yarn can be unwound. Therefore, even when such a yarn is used, the yarn supply device of the present invention can be used without replacing the device.

  In the above embodiment, the case where the yarn supply device according to the present invention is used as a weft supply device for supplying a weft to a loom is not limited to this. It can also be used. Further, the type of loom used is not limited, and can be applied to a plain loom such as a rapier loom. Or it can also be used as a fiber spreading apparatus etc. which makes the fiber bundle formed by a plurality of filaments symmetrical to spread.

(A) is a front view which shows the thread | yarn supply apparatus 100 which concerns on this invention, (b) is a side view. It is the side view which looked at a part of the unwinding part 10 from the A direction of FIG. It is the top view which looked at a part of the unwinding part 10 from the B direction of FIG. It is a front view of the thread | yarn supply apparatus 200 which concerns on other embodiment of this invention. It is a side view which shows the other example of a guide part. It is a side view which shows the other example of a guide part. It is a side view which shows the other example of a guide part. 3 is an enlarged view of a raw yarn supply body 11. FIG. It is the schematic which shows the case where a cylindrical guide part is used. It is an enlarged view of the guide part of FIG.

Explanation of symbols

100 Yarn supply device 1 Yarn (flat yarn)
DESCRIPTION OF SYMBOLS 10 Unwinding part 11 Raw yarn supply body 11a Raw yarn axial core 14 Drive part 15 Auxiliary guide roller (auxiliary guide part)
16 Guide roller (guide section)
17a, 17b Guide roller (guide part)
18a-18c Sub guide roller (Sub guide part)
30 Storage Unit 31 Casing 32a to 32c Sensor 33 Buffer Box 34 Dust Collection Unit 35 Blower L0 Guide Roller Axial Direction L1 to L3 Sub-Guide Roller Axial Direction θ Traverse Angle

Claims (7)

In a yarn supply device comprising a yarn supply body formed by traversing and winding a yarn around a rotatable yarn axis, and supplying the yarn from the yarn supply body,
A plurality of guide portions having a central axis orthogonal to the axial direction of the raw yarn shaft core on the leading side in the yarn feeding direction of the raw yarn supply body and sandwiching the yarn in contact with each other from both axial directions of the raw yarn shaft core are provided. A yarn feeder characterized by the above.   The yarn supply device according to claim 1, wherein the plurality of guide portions are provided apart from each other in the yarn feeding direction.   A guide portion is provided between the raw yarn supply body and the guide portion so as to be in contact with the yarn fed from the raw yarn supply body and bend the yarn feed direction, and the guide portion has an arc-shaped bus bar, and the guide portion 2. The yarn supplying device according to claim 1, wherein the bus bar and the yarn feeding direction are always orthogonal to each other at the contact point with the yarn.   Auxiliary supply of yarn to the guide portion at a constant angle on a plane perpendicular to the axial direction of the yarn axis by contacting the yarn fed from the yarn supply body between the yarn supply body and the guide section. The yarn supplying device according to claim 3, further comprising a guide portion.   The sub-guide portion having a central axis inclined with respect to the axial direction of the guide portion is provided on the yarn feed preceding side of the guide portion when the flat yarn is used. Yarn supply device.   The sub guide portions are provided at a plurality of locations separated in the yarn feeding direction, and the angle between the central axis of each sub guide portion and the central axis of the guide portion is increased stepwise as the distance from the guide portion increases. The yarn supply device according to claim 5.   The yarn supply device according to claim 1, further comprising a storage unit that applies wind pressure to the yarn unwound from the raw yarn supply body and pools the yarn in a U shape.

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