Fiber guide, air spinning device and air spinning unit

Abstract

The present invention provides a fiber guide, an air spinning apparatus, and an air spinning unit. The fiber guide (31) includes a main body (50) and a fiber passage (60) formed in the main body. In the main body (50), with a first region (A1) located on one side and a second region (A2) located on the other side relative to an imaginary plane (P1) defined, the fiber passage has a first surface (61) mostly disposed in the first region and a second surface (62) mostly disposed in the second region. The second surface is inclined away from the first surface as it approaches the outlet (55). The first surface is inclined at 5 degrees or less relative to the axis (50L), and the second surface is inclined at 5 degrees or more but less than 30 degrees relative to the axis (50L). The first portion (55-1) in the outlet, which is included in the first region (A1), is smaller than the second portion (55-2) included in the second region (A2).

Description

Technical Field

[0001] This invention relates to fiber guides, air spinning devices, and air spinning units. Background Technology

[0002] Previously, a technology related to a spinning apparatus for producing yarn from yarn (fiber bundle) was known. Japanese Patent Application Publication No. 2009-001935 (Patent Document 1) describes a spinning apparatus comprising a fiber bundle guiding member, wherein a guiding passage through which the fiber bundle is guided is formed. The guiding passage is configured to be bent around the axis of a needle-shaped guiding member and connects the inlet and outlet. The fiber bundle guiding surface of the fiber bundle guiding member is composed of a first surface from the inlet to the outlet, a second surface from the first surface connected to the downstream side of the swirling airflow in the swirling direction and from the inlet side to the outlet, and a third surface from the second surface connected to the downstream side of the swirling direction and from the inlet side to the outlet.

[0003] Japanese Patent Application Publication No. 2021-025171 (Patent Document 2) describes a spinning apparatus comprising a fiber guiding member, the main body of which has a twisting passage. The inlet is rectangular, and the side closest to the axis center among the four sides forming the outline of the inlet is the guiding edge. A fiber bundle is introduced from one side of the guiding edge. The twisting passage includes a first surface extending downstream from one side of the guiding edge, a second surface extending downstream from a portion of the guiding edge opposite to one side, and a third surface connecting the first and second surfaces. The first, second, and third surfaces are connected to an outlet. Summary of the Invention

[0004] Furthermore, in fiber guides, reducing fiber loss is a key objective. To reduce fiber loss, increasing the amount of tension applied to the fiber bundle or further improving the bundle's convergence is effective. For example, increasing the distance from the fiber guide's axis to the inlet (making the inlet position relative to the axis farther away) can increase the amount of tension applied. However, because space is provided within the passage to apply torsion to the fiber bundle, it is difficult to ensure the fiber bundle moves along the inner wall of the fiber guide, making it difficult to reliably apply tension to the fiber bundle. Additionally, it is difficult to achieve proper fiber bundle convergence. In conventional fiber guides, it is difficult to ensure fiber bundle convergence while simultaneously applying tension to the entire fiber bundle.

[0005] The purpose of this invention is to provide a fiber guide that can ensure the convergence of the fiber bundle while applying tension to the entire fiber bundle.

[0006] One aspect of the present invention is a fiber guide suitable for an air-spinning apparatus. The fiber guide comprises: a main body having a front end face and a rear end face in the axial direction; and a fiber passage formed in the main body, connecting an inlet formed on the front end face and an outlet formed on the rear end face. The inlet is an elongated hole extending in a predetermined direction at a location different from the axis. In the main body, given a first region on one side and a second region on the other side, with an imaginary plane containing the axis and equally dividing the inlet, the fiber passage comprises: a first surface, most of which is disposed in the first region and extends obliquely from the inlet toward the outlet; and a second surface, most of which is disposed in the second region and extends obliquely from the inlet toward the outlet. The second surface is obliquely inclined away from the first surface as it approaches the outlet, the first surface being obliquely inclined at 5 degrees or less relative to the axis, and the second surface being obliquely inclined at 5 degrees or more but less than 30 degrees relative to the axis. The area of ​​the first part contained in the first region of the export is smaller than the area of ​​the second part contained in the second region.

[0007] According to this fiber guide, a fiber bundle is introduced from the inlet on the front end face. The fiber bundle travels along the first and second faces of the fiber path, and as it approaches the outlet, the fiber bundle converges near the second face. The first face is approximately parallel to the axis (parallel or at a very small angle), while the second face is inclined at a relatively large angle to the axis. At the outlet, the area of ​​the second portion contained in the second region is relatively large. Through these structures, it is possible to ensure the convergence of the fiber bundle while applying tension to the entire fiber bundle. As a result, fiber loss can be reduced.

[0008] Another aspect of the invention is a fiber guide suitable for an air-spinning apparatus, comprising: a main body having a front end face and a rear end face in an axial direction; and a fiber passage formed in the main body, connecting an inlet formed on the front end face and an outlet formed on the rear end face. The inlet is an elongated hole extending in a predetermined direction at a location different from the axis. In the main body, given a first region on one side and a second region on the other side, with an imaginary plane containing the axis and equally dividing the inlet, the fiber passage has: a first surface, most of which is disposed in the first region and extends from the inlet toward the outlet; and a second surface, most of which is disposed in the second region and extends from the inlet toward the outlet. The second surface is inclined such that it moves away from the first surface as it approaches the outlet. A minimum width portion of the second surface in a predetermined direction is provided at the outlet.

[0009] According to this fiber guide, a fiber bundle is introduced from the inlet on the front end face. The fiber bundle travels along the first and second faces of the fiber path, and as it approaches the outlet, the fiber bundle converges near the second face. The second face is inclined in a manner that it moves away from the first face as it approaches the outlet, and the minimum width of the second face is located at the outlet. With this structure, the convergence of the fiber bundle can be ensured while applying tension to the entire fiber bundle. As a result, fiber loss can be reduced.

[0010] Alternatively, in the outlet, the size of the first part is less than half the size of the second part. According to this structure, more than two-thirds of the outlet size is formed in the second region present on the second surface. Therefore, the fiber bundle is easier to bundle.

[0011] Alternatively, the rear end face can be flat. With this structure, a fixed distance can be maintained between the hollow guide shaft and the fiber guide in the air-jet spinning device. That is, the fiber guide and the hollow guide shaft will not get too close. Therefore, even in cases such as the introduction of foreign matter, the reversal of the rear end of the fiber bundle will not be hindered, and the reversal of the fiber's rear end can be achieved effectively.

[0012] Alternatively, the second surface can be tilted at an angle of 10 degrees to 25 degrees relative to the first surface. With this structure, it is possible to effectively introduce fiber bundles from the first surface and guide them toward the second surface (i.e., reverse and converge).

[0013] Alternatively, the fiber pathway may have a flat third surface formed between the first and second surfaces. When the end edge forming part of the outlet in the first surface is defined as the first end edge, and the end edge forming part of the outlet in the third surface is defined as the inclined end edge, in the rear end face, the imaginary extension line of the inclined end edge forms an angle of 100 degrees to 130 degrees relative to the imaginary extension line of the first end edge. According to this structure, the fiber bundle can move smoothly as it travels from the first surface to the third surface.

[0014] Alternatively, a first arc-shaped portion may be provided between the first end edge and the inclined end edge. According to this structure, the portion between the two sides in the outlet is not a sharp angle, thus allowing tension to be applied to the fiber bundle while enabling it to be smoothly bundled.

[0015] Alternatively, the first arc-shaped portion connects the first end edge to the inclined end edge, and the length of the first arc-shaped portion is shorter than the length of the first end edge. According to this structure, by properly balancing the first end edge and the first arc-shaped portion of the first surface, the tension of the fiber bundle and the bundle can be smoothly applied and the fiber bundle can be bundled.

[0016] Alternatively, if the end edge forming part of the outlet on the second surface is defined as the second end edge, a second arc-shaped portion is provided between the inclined end edge and the second end edge, and the length of the second arc-shaped portion is shorter than the length of the inclined end edge. According to this structure, the fiber bundle can move smoothly through proper balance between the inclined end edge of the third surface and the second arc-shaped portion.

[0017] Alternatively, the distance between the first end edge and a first imaginary plane containing the axis and parallel to the first end edge can be 1 mm to 3 mm. According to this structure, the fiber bundle can be smoothly moved toward the third surface while applying appropriate tension to it.

[0018] Alternatively, a twisted surface with a twisted shape relative to the extending direction of the axis can be formed between the first and second surfaces, connecting the first and second surfaces through the twisted surface. According to this structure, since the fiber bundle travels along the twisted surface, the reversal of the fiber bundle can be performed well.

[0019] Alternatively, the minimum width of the second surface in the specified direction can be provided at the outlet. With this structure, the fiber bundle can be maximized to converge near the outlet.

[0020] Alternatively, if the end edge forming part of the outlet in the second surface is defined as the second end edge, and an imaginary plane containing the axis and parallel to the second end edge is defined as the second imaginary plane, the distance between the second end edge and the second imaginary plane is 1.5 mm or less. According to this structure, fibers can be smoothly introduced into the hollow guide shaft.

[0021] Alternatively, the second end edge may be located on the opposite side of the inlet relative to the second imaginary plane. With this structure, the fiber bundle can be properly constrained, and the rear ends of the fibers in the fiber bundle delivered from the fiber guide can be well reversed.

[0022] Alternatively, the main body can be roughly cylindrical, with the axis being a centerline passing through the center of the roughly cylindrical shape. Based on this structure, the position of the axis can be determined with high precision.

[0023] As another aspect of the present invention, an air spinning apparatus may also be provided, comprising: a fiber guide member as described above; a nozzle block having a nozzle formed thereon; and a hollow guide shaft with its front end disposed in a spinning chamber formed between the fiber guide member and the nozzle block. In this air spinning apparatus, the structure of the fiber guide member enables more reliable fiber bundle gathering.

[0024] As another aspect of the present invention, an air spinning unit may also be provided, comprising: the aforementioned air spinning apparatus; a drafting device disposed upstream of the air spinning apparatus and for drafting a fiber bundle supplied to the air spinning apparatus; and a winding device disposed downstream of the air spinning apparatus and for winding the yarn generated by the air spinning apparatus. In this air spinning unit, the structure of the fiber guide allows for more reliable fiber bundle winding. Attached Figure Description

[0025] Figure 1 This is a front view of a spinning machine according to one embodiment of the present invention. Figure 2 yes Figure 1 A side view of the air spinning unit of the spinning machine shown. Figure 3 yes Figure 1 A cross-sectional view of the air spinning device shown. Figure 4 yes Figure 3 A three-dimensional view of the fiber guide in the image. Figure 5 yes Figure 4 The front view of the fiber guide. Figure 6A yes Figure 4 Rear view of the fiber guide. Figure 6B It is a diagram showing the area around the exit. Figure 7 It is along Figure 6A A three-dimensional view of the fiber guide sectioned along line VII-VII. Figure 8 It is along Figure 6A A cross-sectional view of the fiber guide cut along line VII-VII. Figure 9 It is along Figure 6A A three-dimensional view of the fiber guide section cut along the IX-IX line. Figure 10 It is along Figure 8 A cross-sectional view of the fiber guide cut along the XX line. Figure 11 This is a diagram illustrating an example of the bundle state of a fiber bundle guided by a fiber guide. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, in the description of the drawings, the same elements are labeled with the same reference numerals, and repeated descriptions are omitted.

[0027] like Figure 1As shown, the spinning machine 1 includes multiple spinning units (air spinning units) 2, a yarn receiving carriage 3, a yarn doffing carriage (not shown), a first end frame 4, and a second end frame 5. The multiple spinning units 2 are arranged in a row. Each spinning unit 2 generates yarn Y and winds it into a package P. If yarn Y is cut or breaks for some reason in a certain spinning unit 2, the yarn receiving carriage 3 performs a yarn receiving operation in that spinning unit 2. When the package P in a certain spinning unit 2 becomes a full package, the doffing carriage does the doffing of the package P and supplies a new yarn tube 20 to that spinning unit 2. The first end frame 4 houses a recovery device for collecting fiber scraps and thread ends generated in the spinning units 2.

[0028] The second end frame 5 houses an air supply unit that adjusts the pressure of compressed air supplied to each part of the spinning machine 1 and supplies air to each part, and a drive motor for supplying power to each part of the spinning unit 2. The second end frame 5 is equipped with a machine control device 100, a touch panel screen 102, and input keys 104. The machine control device 100 centrally manages and controls each part of the spinning machine 1. The touch panel screen 102 can display information related to the settings and / or status of the spinning unit 2. Operators can perform settings operations on the spinning unit 2 by using the buttons displayed on the touch panel screen 102 or the input keys 104.

[0029] like Figure 1 and Figure 2 As shown, each spinning unit 2, in the direction of yarn travel Y, sequentially includes, from the upstream side, a drafting device 6, an air-jet spinning device 7, a yarn monitoring device 8, a tension sensor 9, a yarn retention device 11, a waxing device 12, and a winding device 13. A unit controller 10 is provided for each specified number of spinning units 2 and controls the operation of the spinning units 2.

[0030] The drafting device 6 drafts the fiber bundle (yarn) S. The drafting device 6 has, from the upstream side, a rear roller pair 14, a third roller pair 15, an intermediate roller pair 16, and a front roller pair 17 in the direction of travel of the fiber bundle S.

[0031] The rear roller pair 14 includes a rear lower roller 14a on the drive side and a rear upper roller 14b on the driven side. The rear lower roller 14a and the rear upper roller 14b are opposite each other across the travel path for the fiber bundle S. The third roller pair 15 includes a third lower roller 15a on the drive side and a third upper roller 15b on the driven side. The third lower roller 15a and the third upper roller 15b are opposite each other across the travel path for the fiber bundle S. The intermediate roller pair 16 includes an intermediate lower roller 16a on the drive side and an intermediate upper roller 16b on the driven side. The intermediate lower roller 16a and the intermediate upper roller 16b are opposite each other across the travel path for the fiber bundle S. The front roller pair 17 includes a front lower roller 17a on the drive side and a front upper roller 17b on the driven side. The front lower roller 17a and the front upper roller 17b are opposite each other across the travel path for the fiber bundle S.

[0032] The rear lower roller 14a, the third lower roller 15a, the middle lower roller 16a, and the front lower roller 17a rotate at different speeds via a drive motor located in the spinning unit 2, with the lower rollers rotating at increasingly faster speeds. A belt 18a is provided for the middle lower roller 16a. A belt 18b is provided for the middle upper roller 16b. The front lower roller 17a can also be driven by a drive motor located within the second end frame 5, which is shared by multiple spinning units 2.

[0033] The rear upper roller 14b, the third upper roller 15b, the middle upper roller 16b, and the front upper roller 17b are rotatably supported on the drafting cradle (not shown). The rear upper roller 14b, the third upper roller 15b, the middle upper roller 16b, and the front upper roller 17b are in contact with the rear lower roller 14a, the third lower roller 15a, the middle lower roller 16a, and the front lower roller 17a respectively at a specified pressure and rotate automatically.

[0034] The air-jet spinning device 7 generates yarn Y by twisting the fiber bundle F, which has been drawn by the drafting device 6, using a swirling airflow. Details about the air-jet spinning device 7 are described later.

[0035] The yarn monitoring device 8 monitors the information of the traveling yarn Y between the air-jet spinning device 7 and the yarn storage device 11, and detects the presence of yarn defects based on the monitored information. If a yarn defect is detected, the yarn monitoring device 8 sends a yarn defect detection signal to the unit controller 10. For example, the yarn monitoring device 8 detects abnormalities in the thickness of the yarn Y and / or foreign matter contained in the yarn Y as yarn defects. The yarn monitoring device 8 also detects yarn breaks, etc.

[0036] Tension sensor 9 measures the tension of the traveling yarn Y between the air-jet spinning device 7 and the yarn retention device 11, and sends the tension measurement signal to the unit controller 10.

[0037] If the unit controller 10 determines that an abnormality exists based on the detection results of the yarn monitoring device 8 and / or tension sensor 9, it cuts the yarn Y in the spinning unit 2. Specifically, it stops supplying air to the air-jet spinning device 7 and interrupts the generation of yarn Y, thereby cutting the yarn Y. Alternatively, the yarn Y can also be cut by a separately provided cutter.

[0038] The waxing device 12 applies wax to the yarn Y between the yarn storage device 11 and the winding device 13.

[0039] The yarn retention device 11 stores yarn Y between the air-jet spinning device 7 and the winding device 13. The yarn retention device 11 includes a yarn retention roller that stores yarn Y by winding it around its outer peripheral surface. The yarn retention device 11 has the following functions: stably drawing yarn Y from the air-jet spinning device 7; preventing yarn Y from slackening by retaining it during yarn feeding operations such as those performed by the yarn feeding carriage 3; and preventing tension variations in the yarn Y located downstream of the yarn retention device 11 from being transmitted to the air-jet spinning device 7.

[0040] The winding device 13 winds yarn Y onto the yarn tube 20 to form a package P. The winding device 13 has a rocker arm 21, a winding drum 22, and a traverse guide 23. The rocker arm 21 supports the yarn tube 20 in a rotatable manner. The rocker arm 21 is supported by a support shaft 24 in a swingable manner, and the surface of the yarn tube 20 or the package P contacts the surface of the winding drum 22 with appropriate pressure. A drive motor (not shown) provided on the second end frame 5 simultaneously drives the winding drums 22 of multiple spinning units 2. As a result, the yarn tube 20 or the package P is rotated in the winding direction in each spinning unit 2. The traverse guide 23 of each spinning unit 2 is provided on a shaft 25 shared by multiple spinning units 2. The drive motor of the second end frame 5 reciprocates the shaft 25 in the direction of rotation of the winding drum 22, thereby causing the traverse guide 23 to traverse the yarn Y relative to the rotating yarn tube 20 or the package P with a predetermined amplitude.

[0041] In the event that yarn Y is cut or breaks for some reason in a spinning unit 2, the yarn splicing carriage 3 travels to that spinning unit 2 and performs a splicing operation. The yarn splicing carriage 3 has a splicing device 26, a suction tube 27, and a suction nozzle 28. The suction tube 27 is rotatably supported by a support shaft 27a, captures yarn Y from the air-jet spinning device 7, and guides it to the splicing device 26. The suction nozzle 28 is rotatably supported by a support shaft 27b, captures yarn Y from the winding device 13, and guides it to the splicing device 26. The splicing device 26 splices the guided yarns Y together. The splicing device 26 may be a twister using compressed air or a knotter that mechanically connects the yarns Y, etc.

[0042] When the yarn receiving carriage 3 performs the yarn receiving action, the package P is rotated in the reverse winding direction (reverse rotation). At this time, the rocker arm 21 is moved by a cylinder (not shown) to separate the package P from the winding drum 22, and the package P is reversed by the reversing roller (not shown) provided on the yarn receiving carriage 3.

[0043] Next, refer to Figures 3-10 A detailed description of the air-jet spinning device 7 is provided. Figures 3-10 In this context, an orthogonal xyz coordinate system is included as a reference for the position or arrangement of components or constituent elements. Furthermore, Figure 3 The xyz orthogonal coordinate system shown is based on the nozzle cover 30 rather than the hollow guide shaft 34.

[0044] like Figure 3 As described, the air-jet spinning device 7 includes a nozzle cover 30 and a hollow guide shaft 34. The nozzle cover 30 includes a nozzle holder (support block) 37, a fiber guide 31, a spinning chamber 32, and a nozzle block 38. The hollow guide shaft 34 includes a yarn passage 35 and a second nozzle 36. The operation of the air-jet spinning device 7 is controlled by a unit controller 10. Alternatively, the second nozzle 36 may not be provided.

[0045] The fiber guide 31 and the nozzle block 38 are fixed to the nozzle holder 37, which is the main body of the nozzle cover 30. The fiber guide 31 and the nozzle block 38 are fixed to the nozzle holder 37, for example, by a nozzle cap 39. In the nozzle cover 30, the fiber guide 31 and the nozzle block 38 are configured as separate parts, but the fiber guide 31 and the nozzle block 38 may also be configured as an integral part or as a single component.

[0046] like Figure 3 and Figure 4 As shown, the fiber guide 31 is a component that guides the drafted fiber bundle F toward the interior of the air-jet spinning device 7. The fiber guide 31 is suitable for the air-jet spinning device 7. The fiber guide 31 includes, for example, a generally cylindrical main body 50, a fiber passage 60 formed in the main body 50, and a needle-like component 31b disposed along the axis 50L of the main body 50. The main body 50 has a front end face 52 and a rear end face 53 in the direction of the axis 50L, an inlet 54 formed in the front end face 52, and an outlet 55 formed in the rear end face 53. The fiber passage 60 is a space connecting the inlet 54 and the outlet 55. The fiber guide 31 guides the fiber bundle F into the spinning chamber 32 through the fiber passage 60, which communicates with the spinning chamber 32. When the needle-like component 31b is provided, the fiber bundle F is guided into the spinning chamber 32 via the needle-like component 31b.

[0047] In this specification, "exit 55" refers to the line of intersection between the fiber passage 60 and the rear end face 53, and the area near that line, i.e., the area slightly entering the interior of the fiber passage 60 from that line. Similarly, in this specification, "entrance 54" refers to the line of intersection between the fiber passage 60 and the front end face 52, and the area near that line, i.e., the area slightly entering the interior of the fiber passage 60 from that line. An "intersection line" is a connecting line that connects a face (front end face 52 or rear end face 53) to a wall forming a space (fiber passage 60).

[0048] like Figure 3 As shown, the nozzle block 38 has a first nozzle 33. A spinning chamber 32 is formed by the nozzle block 38 and the rear end face 53 of the fiber guide 31. That is, a spinning chamber 32 is formed inside the air-jet spinning device 7. The first nozzle 33 is disposed around the spinning chamber 32 (the path along which the fiber bundle F travels). The air-jet spinning device 7 injects air from the first nozzle 33 into the spinning chamber 32, causing a swirling airflow to act on the fiber bundle F within the spinning chamber 32. This swirling airflow reverses and rotates the fiber ends of the multiple fibers constituting the fiber bundle F.

[0049] For example, Figure 6A As shown, when viewed from the downstream side of the fiber bundle F's travel direction (i.e., when viewing the rear end face 53 from the direction of axis 50L), the rotation direction of the swirling airflow generated in the spinning chamber 32 by the air jet from the first nozzle 33, i.e., the nozzle air rotation direction R, is clockwise. The nozzle air rotation direction R can be changed by altering the configuration of the nozzle block 38 (specifically, the orientation of the first nozzle 33).

[0050] The hollow guide shaft 34 is a cylindrical component with a yarn passage 35 formed inside. The hollow guide shaft 34 guides the generated yarn Y-direction to the outside of the air-jet spinning device 7.

[0051] During the initial spinning operation (exit spinning), the air-jet spinning device 7 generates a swirling airflow within the yarn passage 35 by injecting air from the second nozzle 36 into the yarn passage 35. The direction of this swirling airflow within the yarn passage 35 is opposite to the direction of the swirling airflow within the spinning chamber 32. This guides the fiber bundle F from the drafting device 6 into the air-jet spinning device 7, initiating the generation of yarn Y. After the initial spinning operation is completed, the injection of air from the second nozzle 36 is stopped.

[0052] Alternatively, the needle-like component 31b can be omitted, and the downstream end of the fiber guide 31 can have the function of the needle-like component 31b.

[0053] When connecting yarn Y via a splice, air is ejected from the second nozzle 36 to feed the yarn Y from the package P back into the air-jet spinning device 7. After the yarn Y has been fed back into the air-jet spinning device 7, the air ejection from the second nozzle 36 is stopped. Then, the yarn Y is spliced ​​(connected) by restarting the drafting operation performed by the drafting device 6 and the spinning operation performed by the air-jet spinning device 7.

[0054] Next, refer to Figures 4-10 The structure of the fiber guide 31 will be described in more detail. For example... Figure 4 , Figure 5 and Figure 6A As shown, in this embodiment, the front end face 52 and the rear end face 53 are, for example, flat surfaces orthogonal to the axis 50. An inlet 54 is formed on the flat front end face 52, but no protruding portion is formed on the front end face 52. An outlet 55 is formed on the flat rear end face 53, but no protruding portion is formed on the rear end face 53.

[0055] When the fiber guide 31 is provided with a needle-like member 31b, the needle-like member 31b protrudes from the rear end face 53. Specifically, the needle-like member 31b protrudes from the rear end face 53 by inserting and fixing it into a hole formed in the rear end face 53. Alternatively, the needle-like member 31b and the fiber guide 31 may be integrally formed (as the same component), in which case a protruding portion is formed on the rear end face 53. In addition, at least one of the front end face 52 and the rear end face 53 may be formed with a protrusion or depression.

[0056] The shape of the main body 50 can be appropriately modified, but the main body 50 has a generally cylindrical shape. A groove may also be formed circumferentially on the outer peripheral surface of the main body 50. The main body 50 has an axis 50L serving as its centerline.

[0057] like Figure 5 As shown, the inlet 54 is an elongated hole extending in a predetermined direction at a position different from the axis 50L. The inlet 54 is, for example, a rectangular elongated hole extending elongatedly in the x-direction. The shape of the inlet 54 can also be appropriately modified. The inlet 54 can have various shapes and sizes as long as it is an elongated hole extending elongatedly in the predetermined direction. "Elongated hole" means that the length of the maximum width of the hole is longer than the length (height) in the direction orthogonal to the direction of the maximum width. In this embodiment, the x-direction is the direction of the maximum width (predetermined direction). The inlet 54 includes, for example, a pair of parallel lower edge 54a and upper edge 54b, and a pair of parallel side edge 54c and side edge 54d. Figure 5 The clamping line L shown in the x-direction abuts against the front upper roller 17b and the front lower roller 17a (refer to...) Figure 3Parallel. However, the inlet 54 may also extend in a direction inclined relative to the clamping line L.

[0058] like Figure 6A As shown, outlet 55 includes, for example, a pair of parallel second end edges 62b (lower end edge) and upper end edge 55b, and a pair of parallel side end edges 55c and side end edges 55d.

[0059] like Figure 4 , Figure 5 and Figure 6A As shown, the main body 50 of the fiber guide 31 has an inlet 54 formed as an elongated hole on the front end face 52, and a fiber passage 60 in a twisted shape within the main body 50. When viewed from the front end face 52 side, the fiber passage 60 of the main body 50 is formed evenly and shallowly in the left and right regions. On the other hand, when viewed from the rear end face 53 side, the fiber passage 60 of the main body 50 is formed deeper and biased towards the right side region.

[0060] In the fiber guide 31 of this embodiment, in the main body 50, an imaginary plane P1 is first defined, which includes the axis 50L and evenly divides the inlet 54. Furthermore, in the main body 50, a side located on the imaginary plane P1 is defined (…). Figure 5 The first region A1 (shown on the right) and the other side of the imaginary plane P1 (shown on the right) Figure 5 The second region A2 (shown on the left). When the entrance 54 is formed in the front face 52 in a shape symmetrical about an imaginary plane P1, the imaginary plane P1 bisects the front face 52 and approximately bisects the main body 50. That is, the first region A1 and the second region A2 are shapes that are like a cylinder cut in half. However, depending on the position and shape of the entrance 54, the imaginary plane P1 may not bisect the front face 52 or the main body 50 equally.

[0061] The fiber passage 60 has a first surface 61, a second surface 62, and a twisted surface 63. The majority of the first surface 61 is located in a first region A1, extending from the inlet 54 towards the outlet 55. The majority of the second surface 62 is located in a second region A2, extending from the inlet 54 towards the outlet 55. The twisted surface 63 connects the first surface 61 and the second surface 62. The first surface 61 is, for example, a flat surface in a triangular or trapezoidal shape. The first surface 61 extends from the inlet 54 towards the outlet 55. The first surface 61 has a wider width at the inlet 54, but the width of the first surface 61 narrows as it approaches the outlet 55.

[0062] The second surface 62 is, for example, an elongated trapezoidal flat surface extending in the direction of axis 50L. The second surface 62 extends from inlet 54 toward outlet 55. The second surface 62 connects another portion of inlet 54 to another portion of outlet 55. The second surface 62 has a defined width at inlet 54, and the width of the second surface 62 narrows as it approaches outlet 55 (see also...). Figure 10 ).

[0063] like Figure 5 As shown, the lower edge 54a is composed of a first edge 61a, which is the intersection line of the first surface 61 and the front surface 52, and a second edge 62a, which is the intersection line of the second surface 62 and the front surface 52.

[0064] In this embodiment, the upstream end of the first surface 61 is shown to coincide with the lower edge 54a of the inlet 54, but it is also possible that the upstream end of the first surface 61 is separated from the lower edge 54a of the inlet 54 by a predetermined length. In this embodiment, the upstream end of the second surface 62 is shown to coincide with the lower edge 54a of the inlet 54, but it is also possible that the upstream end of the second surface 62 is separated from the lower edge 54a of the inlet 54 by a predetermined length.

[0065] The shape of the second surface 62 can take various forms. The second surface 62 may not be flat but may include curved or convex / concave surfaces. For example, the second surface 62 may have any of the following features: a curved surface that is concave midway in the fiber travel direction, a curved surface that is convex midway in the fiber travel direction, a curved surface that is concave midway in a direction orthogonal to the fiber travel direction, and a curved surface that is convex midway in a direction orthogonal to the fiber travel direction. The second surface 62 may also contain a flat surface in one part and curved or convex / concave surfaces in other parts. The shape of the outline of the second surface 62 is not limited to the case where all four sides are straight lines; at least one side may be a curve or a combination of multiple straight lines. Regardless of the form adopted, the second surface 62 is set to a different height from the first surface 61 in the height direction orthogonal to the axis 50L which is the fiber travel direction (along the direction of the imaginary plane P1). More specifically, the second surface 62 is inclined in a manner that it moves away from the first surface 61 as it approaches the outlet 55.

[0066] Regarding face 61 and face 62, "mostly disposed in the first region or the second region" means, for example, that more than 80% of the area of ​​each face is disposed in a certain region. Alternatively, it could mean that more than 90% of the area of ​​at least one of face 61 and face 62 is disposed in a certain region. Or it could mean that the entire surface of at least one of face 61 and face 62 is disposed in a certain region.

[0067] like Figure 8As shown, the first surface 61 is inclined at 5 degrees or less (preferably 2 degrees or less) relative to the axis 50L. Figure 8 In this embodiment, the tilt angle of the first surface 61 is very small, making it difficult to observe visually. However, the first surface 61 can also tilt, for example, towards the axis 50L as it approaches the outlet 55, with a tilt angle of 5 degrees or less. In this case, the tilt angle of the first surface 61 is a positive angle, less than +5 degrees. Alternatively, the first surface 61 can also tilt, for example, away from the axis 50L as it approaches the outlet 55, with a tilt angle of 5 degrees or less. In this case, the tilt angle of the first surface 61 is a negative angle, greater than -5 degrees and less than zero degrees. The phrase "the first surface tilts at 5 degrees or less relative to the axis" as described in the technical solution refers to an absolute value of the tilt angle of 5 degrees or less, including any of the aforementioned tilt types. The tilt angle of the first surface 61 is... Figure 8 The angle represented in the cross section. In other words, the tilt angle of the first surface 61 is the angle of the line of intersection of the first surface 61 and the imaginary plane P1 (or a plane parallel to the imaginary plane P1) relative to the axis 50L.

[0068] The second surface 62 is inclined at an angle of 5 degrees to 30 degrees (preferably 15 degrees to 25 degrees) relative to the axis 50L. The second surface 62 is inclined at this positive angle, thus moving away from the first surface 61 as it approaches the outlet 55. When the second surface 62 is a flat surface, the angle of inclination of the second surface 62 relative to the axis 50L is constant (see reference). Figure 7 For example, temperatures between 5 degrees Celsius and 30 degrees Celsius (refer to...). Figure 8 (The angle θ2 shown). In the case where the second surface 62 partially includes a flat surface, the inclination angle of the flat surface can be taken as the inclination angle of the second surface 62. Alternatively, the average of the inclination angles of each part of the second surface 62 can be taken as the inclination angle of the second surface 62.

[0069] In other viewpoints, the second face 62 is tilted by an angle of more than 10 degrees and less than 25 degrees relative to the first face 61.

[0070] like Figure 7 and Figure 9 As shown, the twisted surface 63 has a shape that is twisted relative to the extending direction of the axis 50L. The twisted surface 63 has a structure combining curved and flat surfaces, which are twisted as a whole relative to the axis 50L. The twisting direction from the inlet 54 to the outlet 55 coincides with the nozzle air rotation direction R. More specifically, as... Figure 6BAs shown, the torsion surface 63 has a flat third surface 66 formed between the first surface 61 and the second surface 62. Between the third surface 66 and the first surface 61, there is a curved surface connecting the third surface 66 and the first surface 61. Between the third surface 66 and the second surface 62, there is a curved surface connecting the third surface 66 and the second surface 62.

[0071] Next, refer to Figures 6A to 10 The structure of section 62 and outlet 55 will be described in more detail.

[0072] In the fiber guide 31, the area of ​​the first portion 55-1 contained in the first region A1 of the outlet 55 is smaller than the area of ​​the second portion 55-2 contained in the second region A2 of the outlet 55 (refer to...). Figure 6B More specifically, in outlet 55, for example, the area of ​​part 1 55-1 is less than half the area of ​​part 2 55-2. The area of ​​part 1 55-1 may also be less than one-fifth or even less than one-tenth of the area of ​​part 2 55-2.

[0073] Figure 7 It is along Figure 6A A perspective view of the fiber guide 31 cut along line VII-VII. Figure 8 It is along Figure 6A A cross-sectional view of the fiber guide 31 cut along line VII-VII. Figure 10 It is along Figure 8 A cross-sectional view of the fiber guide 31 cut along the XX line. (See image.) Figure 10 As shown, the width of the second surface 62 in the x-direction (the direction in which the inlet 54 extends longer) gradually decreases from the inlet 54 toward the outlet 55. The minimum width Wmin of the second surface 62 in the x-direction is provided at the outlet 55.

[0074] An inclined end edge 66b is provided on the third surface 66, which forms part of the outlet 55. A first end edge 61b is provided on the first surface 61, which also forms part of the outlet 55. Figure 6A As shown, in the rear end face 53, the imaginary extension of the inclined end edge 66b forms an angle of, for example, more than 100 degrees and less than 130 degrees with respect to the imaginary extension of the first end edge 61b (see reference). Figure 6B (The angle α is shown). Here, the inclined end edge 66b is the intersection line of the third surface 66 and the rear end surface 53. The first end edge 61b is the intersection line of the first surface 61 and the rear end surface 53.

[0075] A first arcuate portion 67 is provided between the first end edge 61b and the inclined end edge 66b. This first arcuate portion 67 connects the first end edge 61b and the inclined end edge 66b. The length of the first arcuate portion 67 is shorter than the length of the first end edge 61b. In the second surface 62, a portion of the outlet 55 is formed by the fourth end edge 69 (the second end edge 62b). A second arcuate portion 68 is provided between the inclined end edge 66b and the fourth end edge 69 (the second end edge 62b). The second end edge 62b is the intersection line of the second surface 62 and the rear end surface 53. The length of the second arcuate portion 68 is shorter than the length of the inclined end edge 66b. The first arcuate portion 67 and the second arcuate portion 68 are formed in the main body portion 50 in a manner that protrudes into the fiber passage 60.

[0076] End edge 63b forms part of outlet 55 and is the intersection of twist surface 63 and rear end surface 53. End edge 63b is composed of inclined end edge 66b, first arc-shaped portion 67 and second arc-shaped portion 68, and fourth end edge 69.

[0077] When an imaginary plane containing axis 50L and parallel to the first end edge 61b is defined as another imaginary plane P2, the distance between the first end edge 61b and the other imaginary plane P2 is, for example, more than 1 mm and less than 3 mm (see reference). Figure 6B The distance D1 is shown. Since the first face 61 extends approximately parallel to or at a small angle to the axis 50L, the first end edge 61b is located above the axis 50L (on the entrance 54 side).

[0078] When an imaginary plane containing axis 50L and parallel to the second end edge 62b is defined as another imaginary plane P2, the distance between the second end edge 62b and the other imaginary plane P2 is 1.5 mm or less (refer to...). Figure 6B The distance D2 is shown. The second end edge 62b is located on the opposite side of the entrance 54 relative to another imaginary plane P2.

[0079] Regarding another imaginary plane P2 parallel to the first end edge 61b and another imaginary plane P2 parallel to the second end edge 62b, they are common when the first end edge 61b and the second end edge 62b are parallel (both extending along the x-direction), but they are different imaginary planes when the first end edge 61b and the second end edge 62b are not parallel. "Distance" refers to the shortest distance between a line and a plane.

[0080] According to the fiber guide 31, air-jet spinning device 7, and spinning unit 2 of this embodiment, the fiber bundle F is introduced from the inlet 54 of the front end face 52. The fiber bundle F travels along the first face 61 and the second face 62 of the fiber passage 60, and as it approaches the outlet 55, the fiber bundle F converges near the second face 62 (see reference). Figure 11The first surface 61 is approximately parallel to the axis 50L (parallel or at a very small angle), while the second surface 62 is inclined at a relatively large angle to the axis 50L. In the outlet 55, the area of ​​the second portion 55-2, contained in the second region A2, is relatively large. These structures ensure the bundle's tightness while applying tension to the entire fiber bundle F. As a result, fiber loss can be reduced.

[0081] According to the fiber guide 31 of this embodiment, a fiber bundle F is introduced from the inlet 54 of the front end face 52. The fiber bundle F travels along the first face 61 and the second face 62 of the fiber passage 60, and as it approaches the outlet 55, the fiber bundle F converges near the second face 62 (see reference). Figure 11 The second surface 62 is inclined in a manner that it moves away from the first surface 61 as it approaches the outlet 55. The minimum width portion Wmin of the second surface 62 is located at the outlet 55. With this structure, it is possible to ensure the tightness of the fiber bundle F while applying tension to the entire fiber bundle F. As a result, fiber loss can be reduced.

[0082] In outlet 55, the area of ​​the first part 55-1 is less than half the area of ​​the second part 55-2. Therefore, more than two-thirds of the area of ​​outlet 55 is formed in the second region A2 where the second surface 62 exists, thus making it easier for fiber bundle F to bundle.

[0083] The rear end face 53 is flat. Therefore, a fixed distance can be maintained between the hollow guide shaft 34 and the fiber guide 31 in the air-jet spinning device 7. That is, the fiber guide 31 and the hollow guide shaft 34 will not come too close. Therefore, even in the event of foreign matter, for example, it will not hinder the reversal of the rear end of the fiber bundle F, and the rear end of the fiber can be reversed smoothly.

[0084] The second surface 62 is inclined at an angle of 10 degrees to 25 degrees relative to the first surface 61. This allows for the efficient introduction of fiber bundles F from the first surface 61 and the guidance (i.e., reversal and convergence) of fiber bundles F to the second surface 62.

[0085] When viewed from the rear end face 53, the imaginary extension of the inclined end edge 66b of the third face 66 forms an angle of more than 100 degrees and less than 130 degrees with respect to the imaginary extension of the first end edge 61b. As a result, the fiber bundle F can move smoothly as it travels from the first face 61 to the third face 66.

[0086] By providing a first arc-shaped portion 67 between the first end edge 61b and the inclined end edge 66b, the portion between the two sides of the outlet 55 is not a sharp corner. Therefore, it is possible to apply tension to the fiber bundle F while smoothly bundling the fiber bundle F.

[0087] The length of the first arc-shaped portion 67 is shorter than the length of the first end edge 61b. By properly balancing the first end edge 61b of the first surface 61 with the first arc-shaped portion 67, the tension of the fiber bundle F and the bundle F can be smoothly applied and the bundle F can be successfully bundled.

[0088] A second arcuate portion 68 is provided between the inclined end edge 66b and the second end edge 62b, and the length of the second arcuate portion 68 is shorter than the length of the inclined end edge 66b. By properly balancing the inclined end edge 66b of the third surface 66 with the second arcuate portion 68, the fiber bundle F can move smoothly.

[0089] The distance between the first edge 61b and another imaginary plane P2 is more than 1 mm and less than 3 mm (refer to...). Figure 6B (D1 as shown). This ensures that the height from axis 50L to the first surface 61 can be such that the fiber bundle F can be smoothly moved toward the third surface 66 while applying appropriate tension to the fiber bundle F.

[0090] Based on the structure in which a twist surface 63 is provided between the first surface 61 and the second surface 62, the fiber bundle F can be reversed well because it travels along the twist surface 63.

[0091] The minimum width portion Wmin of the second surface 62 is located at the outlet 55. Therefore, the fiber bundle F can be maximized in the vicinity of the outlet 55.

[0092] The distance between the second edge 62b and another imaginary plane P2 is less than 1.5 mm (refer to...). Figure 6B (D2 as shown). Thus, the fiber travels near the axis 50L, thereby enabling the fiber to be smoothly guided into the hollow guide shaft 34.

[0093] The second end edge 62b is located on the opposite side of the inlet 54 relative to another imaginary plane P2. As a result, the fiber bundle F can be properly constrained, and the rear ends of the fibers of the fiber bundle F delivered from the fiber guide 31 can be well reversed.

[0094] The above describes one embodiment of the present invention, but the present invention is not limited to the above embodiment. The above embodiment and the following variations can also be appropriately combined.

[0095] The air rotation direction R of the nozzle in the fiber guide 31 can also be opposite to that in the above embodiment. In this case, the arrangement of the first region A1 and the second region A2 can also be opposite to that in the above embodiment. That is, from Figure 5 When viewed from the front face 52 shown, region A1 is located on the left and region A2 is located on the right. Figure 6AWhen viewed from the rear end face 53 shown, region A1 is located on the right and region A2 is located on the left. Most of the first face 61 is located in region A1, and most of the second face 62 is located in region A2.

[0096] In the above embodiment, an example was described where the second end edge 62b is located on the opposite side of the inlet 54 relative to another imaginary plane P2. However, the second end edge 62b may also be located on the same side as the inlet 54 relative to the other imaginary plane P2. In this case, the distance between the second end edge 62b and the aforementioned other imaginary plane P2 may be 1.5 mm or less.

[0097] Alternatively, the minimum width portion Wmin of the second surface 62 in the x-direction may not be located at the downstream end of the outlet 55, but rather within the main body 50 of the outlet 55 (midway along the path, however, closer to the outlet 55 side than half, preferably 1 / 4, of the length of the second surface 62 in the fiber travel direction). In this case, the second end edge 62b, which is wider than the minimum width portion Wmin, may extend to the vicinity of the imaginary plane P1, or may extend beyond the imaginary plane P1. The shape of the lower part of the outlet 55 may also be enlarged.

[0098] The first end edge 61b and the inclined end edge 66b are not limited to the form in which they are connected by the first arc-shaped portion 67. The first arc-shaped portion 67 may also be omitted, and the first end edge 61b and the inclined end edge 66b may be connected in a manner with a specified angle.

[0099] The inclined end edge 66b and the fourth end edge 69 are not limited to the form in which they are connected by the second arc-shaped portion 68. The second arc-shaped portion 68 may also be omitted, and the inclined end edge 66b and the fourth end edge 69 may be connected in a manner with a specified angle.

[0100] Alternatively, at least one of the first surface 61 and the second surface 62 may contain a concave-convex shape. Figure 5 and Figure 6A In the diagram, inlet 54 and outlet 55 are illustrated with right-angled portions at their corners. However, it is also possible that at least one of the corners of inlet 54 and outlet 55 has an arcuate shape (a shape that protrudes in an arcuate shape into the fiber passage 60).

[0101] In the above embodiment, the drafting device 6 is described as an example, comprising a rear roller pair 14, a third roller pair 15, an intermediate roller pair 16, and a front roller pair 17. However, it is also possible to have more than one roller pair upstream compared to the rear roller pair 14. Furthermore, the front roller pair 17 (the roller pair positioned closest to the air-jet spinning device 7 in the transport path of the fiber bundle F) may also be part of another device. For example, the spinning unit 2 may include a supply device that supplies the fiber bundle F drafted by the drafting device 6 to the air-jet spinning device 7, and the front roller pair 17 may be included as part of the supply device. The front roller pair 17 may be included in the drafting device 6 that drafts the fiber bundle S, or in the supply device that supplies the fiber bundle F to the air-jet spinning device 7, or it may be provided separately without being included in other devices.

[0102] In spinning unit 2, the yarn retention device 11 has the function of drawing yarn Y from the air-jet spinning device 7, but the yarn Y can also be drawn from the air-jet spinning device 7 by the guide roller and the clamping roller. In the case where the yarn Y is drawn from the air-jet spinning device 7 by the guide roller and the clamping roller, the yarn retention device 11 can be replaced, or a loose tube and / or a mechanical compensator utilizing the suction airflow can be installed on the basis of the yarn retention device 11.

[0103] In the spinning unit 2, instead of the structure in which the two yarn ends are connected by the yarn splicing device 26, the yarn Y from the air-jet spinning device 7 is connected (joined) to the yarn Y from the package P by inserting the yarn Y from the package P into the air-jet spinning device 7 and starting the drafting action of the drafting device 6 and the spinning action of the air-jet spinning device 7.

[0104] In the spinning machine 1, each device is arranged in the height direction of the machine so that the yarn Y supplied from the upper side is wound on the lower side. However, each device may also be arranged so that the yarn Y supplied from the lower side is wound on the upper side.

[0105] In the spinning machine 1, at least one lower roller and traverse guide 23 of the drafting device 6 are driven by power from the second end frame 5 (i.e., shared by multiple spinning units 2). However, it is also possible to drive each part of the spinning unit 2 (e.g., drafting device, spinning device, winding device, etc.) independently for each spinning unit 2.

[0106] In the direction of yarn Y's travel, the tension sensor 9 can also be positioned upstream of the yarn monitoring device 8. The unit controller 10 can also be provided for each spinning unit 2. In the spinning unit 2, the waxing device 12, the tension sensor 9, and the yarn monitoring device 8 can also be omitted. If the yarn Y is not waxed, the waxing device 12 can be retained, and the wax can simply be removed from the waxing device 12. exist Figure 1 The diagram shows a spinning machine 1 winding a cylindrical package P, but it can also wind a conical package. In the case of a conical package, slack in the yarn Y occurs due to the traverse movement of the yarn Y, but this slack can be absorbed by the yarn retention device 11. The materials and shapes of each structure are not limited to those described above; a wide variety of materials and shapes can be used.

Claims

1. A fiber guide, suitable for air spinning devices, characterized in that, have: The main body has a front end face and a rear end face in the axial direction; and A fiber passage, formed in the main body, connects an inlet formed on the front end face and an outlet formed on the rear end face. The inlet is an elongated hole extending in a predetermined direction at a location different from the axis. In the main body, a first region is defined on one side relative to an imaginary plane that includes the axis and divides the entrance equally, and a second region is defined on the other side. The fiber pathway has: The first face, most of which is disposed in the first region, extends at an angle from the inlet toward the outlet; and The second surface, most of which is disposed in the second region, extends at an angle from the inlet toward the outlet. The second surface is inclined in a manner that it moves away from the first surface as it approaches the exit. The first surface is inclined at less than 5 degrees relative to the axis. The second surface is inclined at an angle of more than 5 degrees and less than 30 degrees relative to the axis. The area of ​​the first portion of the outlet contained in the first region is smaller than the area of ​​the second portion contained in the second region. A twisted surface, twisted relative to the extending direction of the axis, is formed between the first surface and the second surface, connecting the first surface and the second surface. The end edge of the twisted surface forms part of the outlet. The fiber pathway has a flat third surface formed between the first surface and the second surface. When the end edge of the first surface that forms part of the outlet is defined as the first end edge, and the end edge of the third surface that forms part of the outlet is defined as the inclined end edge, In the rear end face, the imaginary extension line of the inclined end edge forms an angle of more than 100 degrees and less than 130 degrees with respect to the imaginary extension line of the first end edge. When the end edge that forms part of the outlet in the second surface is defined as the second end edge, A second arc-shaped portion is provided between the inclined end edge and the second end edge. The length of the second arc-shaped portion is shorter than the length of the inclined end edge. The minimum width of the second surface in the specified direction is provided at the exit.

2. The fiber guide according to claim 1, characterized in that, In the outlet, the size of the first part is less than half the size of the second part.

3. The fiber guide according to claim 1, characterized in that, The rear end face is flat.

4. The fiber guide according to claim 2, characterized in that, The rear end face is flat.

5. The fiber guide according to claim 1, characterized in that, The second surface is inclined at a degree greater than 10 degrees and less than 25 degrees relative to the first surface.

6. The fiber guide according to claim 2, characterized in that, The second surface is inclined at a degree greater than 10 degrees and less than 25 degrees relative to the first surface.

7. The fiber guide according to claim 3, characterized in that, The second surface is inclined at a degree greater than 10 degrees and less than 25 degrees relative to the first surface.

8. The fiber guide according to claim 4, characterized in that, The second surface is inclined at a degree greater than 10 degrees and less than 25 degrees relative to the first surface.

9. The fiber guide according to any one of claims 1 to 8, characterized in that, A first arc-shaped portion is provided between the first end edge and the inclined end edge.

10. The fiber guide according to claim 9, characterized in that, The first arc-shaped portion connects the first end edge to the inclined end edge. The length of the first arc-shaped portion is shorter than the length of the first end edge.

11. The fiber guide according to any one of claims 1 to 8 and 10, characterized in that, The distance between the first end edge and the first other imaginary plane containing the axis and parallel to the first end edge is more than 1 mm and less than 3 mm.

12. The fiber guide according to claim 9, characterized in that, The distance between the first end edge and the first other imaginary plane containing the axis and parallel to the first end edge is more than 1 mm and less than 3 mm.

13. The fiber guide according to any one of claims 1 to 8, 10, and 12, characterized in that, In the case where an imaginary plane containing the axis and parallel to the second end edge is defined as a second imaginary plane, The distance between the second end edge and the second imaginary plane is less than 1.5 mm.

14. The fiber guide according to claim 9, characterized in that, In the case where an imaginary plane containing the axis and parallel to the second end edge is defined as a second imaginary plane, The distance between the second end edge and the second imaginary plane is less than 1.5 mm.

15. The fiber guide according to claim 11, characterized in that, In the case where an imaginary plane containing the axis and parallel to the second end edge is defined as a second imaginary plane, The distance between the second end edge and the second imaginary plane is less than 1.5 mm.

16. The fiber guide according to claim 13, characterized in that, The second end edge is located on the side opposite to the entrance relative to the second imaginary plane.

17. The fiber guide according to claim 14, characterized in that, The second end edge is located on the side opposite to the entrance relative to the second imaginary plane.

18. The fiber guide according to claim 15, characterized in that, The second end edge is located on the side opposite to the entrance relative to the second imaginary plane.

19. The fiber guide according to any one of claims 1 to 8, 10, 12, and 14 to 18, characterized in that, The main body is roughly cylindrical. The axis is a center line that passes through the center of the generally cylindrical shape.

20. The fiber guide according to claim 9, characterized in that, The main body is roughly cylindrical. The axis is a center line that passes through the center of the generally cylindrical shape.

21. The fiber guide according to claim 11, characterized in that, The main body is roughly cylindrical. The axis is a center line that passes through the center of the generally cylindrical shape.

22. The fiber guide according to claim 13, characterized in that, The main body is roughly cylindrical. The axis is a center line that passes through the center of the generally cylindrical shape.

23. An air spinning device, characterized in that, have: The fiber guide according to any one of claims 1 to 22; A nozzle block having nozzles formed; and The front end is disposed in a hollow guide shaft formed in the spinning chamber between the fiber guide and the nozzle block.

24. An air-spinning unit, characterized in that, have: The air spinning apparatus according to claim 23; A drafting device, which is disposed upstream of the air spinning device, and drafts the fiber bundle supplied to the air spinning device. as well as A winding device is disposed downstream of the air spinning device and winds the yarn generated by the air spinning device.

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