JP6394954B2 - Hollow guide shaft body, pneumatic spinning device, and textile machine - Google Patents

Description

  The present invention mainly relates to a hollow guide shaft body used in an air spinning apparatus that twists fiber bundles to generate spun yarn.

  2. Description of the Related Art Conventionally, pneumatic spinning apparatuses that perform yarn discharging spinning are known. Yarn discharge spinning is a process of generating yarn by performing spinning different from normal spinning at the start of spinning. In an air spinning apparatus that performs yarn discharge spinning, a spinning nozzle is formed in a nozzle block, and an auxiliary nozzle is also formed in a hollow guide shaft body. By injecting compressed air from the spinning nozzle and the auxiliary nozzle, a swirling air flow can be generated in the pneumatic spinning device.

  The air spinning device twists the fiber bundle drafted by the drafting device by the swirling air flow generated by the compressed air ejected from the spinning nozzle and ejects it from the auxiliary nozzle at the time of spinning out the yarn. The spun yarn is generated by further twisting the fiber bundle while drawing the fiber bundle downstream by the swirling air flow generated by the compressed air. In the subsequent normal spinning, the pneumatic spinning device generates a spun yarn from the fiber bundle only by the swirling air flow by the spinning nozzle.

  Patent Document 1 discloses a spinning machine in which a spinning nozzle and an auxiliary nozzle are formed. In this spinning machine, the introduction port for introducing the fiber drafted by the draft device, the auxiliary nozzle, and the yarn discharge port for discharging the generated spun yarn are formed in the same member (hollow guide shaft). ing.

  Patent Document 2 discloses a spindle (hollow guide shaft body) composed of a main body portion and a tip portion. A plurality of holes for allowing fibers to pass through are arranged in the fiber traveling direction at the tip of the spindle. Each hole is formed so as to partially overlap when viewed in the axial direction. Thereby, it becomes possible to perform spinning at high speed while preventing clogging of impurities.

JP 2001-146646 A JP 2001-146647 A

  In the hollow guide shaft body of Patent Document 1, the introduction port, the auxiliary nozzle, and the yarn discharge port downstream thereof are formed in the same member. Therefore, the hollow guide shaft body of Patent Document 1 has a very long axial length. Moreover, the hollow guide shaft body is usually an elongated member having a cross section of less than 1 cm in diameter, but high accuracy is required for the fiber passage (hole) formed therein. Therefore, when the hollow guide shaft body is a member that is long in the axial direction as in Patent Document 1, it may be difficult to process the fiber passage.

  Patent Document 2 describes that the distal end portion and the main body portion of the hollow guide shaft body are separate members. However, Patent Document 2 neither describes nor suggests forming an auxiliary nozzle on the hollow guide shaft body.

  A main object of the present invention is to provide a hollow guide shaft having a configuration capable of facilitating processing to form an internal fiber passage.

Means and effects for solving the problems

The hollow guide shaft of the present invention includes a first member, a second member, a support portion, and a cover portion . The first member is arranged so as to generate a first fiber passage having an introduction port for introducing fibers and a swirling air flow for sending the fibers to the downstream side during yarn discharge spinning in the first fiber passage. An auxiliary nozzle is formed. A second fiber passage through which the fiber that has passed through the first fiber passage passes is formed in the second member. The second member is provided as a separate member from the first member. The support portion supports the second member. The cover portion covers the support portion so as to restrict movement of the support portion. An air supply passage is formed between the first member and at least one of the support portion and the cover portion, and the auxiliary nozzle is connected to the air supply passage.

Thereby, the length of the axial direction of the member which has a fiber channel | path can be shortened by dividing | segmenting a hollow guide shaft body in an axial direction. Therefore, the process which forms a fiber channel becomes easy. Further, the position of the second member can be determined by restricting the movement of the support portion that supports the second member. Moreover, the cost which processes and forms an air supply path can be reduced by using between the members which comprise a hollow guide shaft body as an air supply path.

  In the hollow guide shaft body, the area of the surface perpendicular to the fiber traveling direction of the first fiber passage is smaller than the area of the surface perpendicular to the fiber traveling direction of the second fiber passage.

  Thereby, since air becomes easy to flow from the 1st fiber passage to the 2nd fiber passage, the fiber introduced into the hollow guide shaft object can be smoothly sent to the downstream side.

  In the hollow guide shaft body, the cover portion includes an inner cover portion and an outer cover portion. The inner cover portion covers at least a part of the first member, the second member, and the support portion. The outer cover portion covers the inner cover portion and positions the first member with respect to a nozzle block in which a spinning nozzle is formed.

  Thereby, a 1st member etc. can be protected because an inner side cover part and an outer side cover part cover a 1st member etc. In addition, since the outer cover portion positions the first member, the position of the first member with respect to the nozzle block can be accurately positioned.

  In the hollow guide shaft body, air supplied from the auxiliary nozzle to the first fiber passage is temporarily between the first member and at least one of the support portion and the cover portion. An air storage part for storing is provided.

  Thereby, the cost can be further reduced by using not only the air supply passage but also the air storage portion by utilizing the space between the members constituting the hollow guide shaft body.

  In the hollow guide shaft body, a seal portion is provided between the first member and at least one of the support portion and the cover portion to prevent air from leaking from the air storage portion. Yes.

  Thereby, since the leakage of air can be eliminated, the consumption of compressed air can be suppressed.

  In the hollow guide shaft body, the seal portion is an O-ring.

  Thereby, the leak of compressed air can be suppressed using a general member.

  In the hollow guide shaft body, the seal portion is an adhesive that bonds the first member and the cover portion.

  Thereby, since the member for bonding the first member and the cover part and the seal part can be made common, the number of parts can be reduced.

  In the hollow guide shaft body, the first member and the cover portion are made of different materials.

  Thereby, since the property requested | required of a raw material differs between a 1st member and a cover part, the fall of the cost of a 1st member and a cover part or improvement of a performance can be implement | achieved by determining a raw material.

  In the hollow guide shaft body, the first member includes at least one of ceramics and diamond-like carbon. The cover part includes at least one of stainless steel and resin.

  Thereby, the lifetime of a 1st member can be extended by using the raw material which has abrasion resistance for the 1st part which a fiber always contacts during spinning. In addition, by using an inexpensive material for the cover portion that does not contact the fiber so much, the cost can be reduced without degrading the performance of the hollow guide shaft body.

  In the hollow guide shaft body, the cover portion is formed with a recess or a hole. The first member is attached to the cover portion by being fitted into the concave portion or the hole portion.

  Thereby, since a 1st member can be attached to a cover part only by fitting, attachment work can be simplified.

  The pneumatic spinning device includes the hollow guide shaft body, a nozzle block, and a fiber guide portion. The nozzle block forms a spinning chamber with the hollow guide shaft body, and a spinning nozzle arranged to generate a swirling air flow that acts on the fibers in the spinning chamber is formed in the spinning chamber. The The fiber guide portion is disposed to face the hollow guide shaft body and guides the fiber to the first fiber passage.

  Thereby, the pneumatic spinning device provided with the hollow guide shaft body configured to easily form the internal fiber passage can be realized.

  A textile machine includes the pneumatic spinning device.

  Thereby, the textile machine provided with the hollow guide shaft body of the structure which can form an internal fiber channel | path easily is realizable.

1 is a front view showing an overall configuration of a spinning machine according to an embodiment of the present invention. The side view of a spinning unit. Sectional drawing which shows the structure of a pneumatic spinning apparatus. The perspective view which shows the structure of a 1st member, a 2nd member, and an inner side cover part.

  Next, a spinning machine (textile machine) according to an embodiment of the present invention will be described with reference to the drawings. A spinning machine 1 shown in FIG. 1 includes a large number of spinning units 2, a yarn splicing cart 3, a prime mover box 4, and a machine control device 90.

  The machine base control device 90 is a device that centrally manages each component included in the spinning machine 1 and includes a monitor 91 and an input key 92. When an operator performs an appropriate operation using the input key 92, the specific spinning unit 2 or all spinning units 2 are set, and the setting and state of the specific spinning unit 2 or all spinning units 2 are set. Or displayed on the monitor 91.

  As shown in FIG. 2, each spinning unit 2 includes a draft device 7, an air spinning device 9, a yarn storage device 14, and a winding device 96, which are arranged in order from upstream to downstream. Yes. In the present specification, “upstream” and “downstream” mean upstream and downstream in the traveling (conveying) direction of the sliver 6, the fiber bundle 8, and the spun yarn 10 during spinning. Each spinning unit 2 spins the fiber bundle 8 sent from the draft device 7 by the air spinning device 9 to generate a spun yarn 10, and winds the spun yarn 10 by the winding device 96 to form a package 28. To do.

  The draft device 7 is provided in the vicinity of the upper end of the casing 5 of the spinning machine 1. The draft device 7 includes four roller pairs in order from the upstream side: a back roller pair 21, a third roller pair 22, a middle roller pair 24 on which an apron belt 23 is mounted, and a front roller pair 25. The draft device 7 drafts (stretches the fiber bundle) the sliver 6 supplied from a sliver case (not shown) via the sliver guide 20 until a predetermined thickness is reached. The fiber bundle 8 drafted by the draft device 7 is supplied to the air spinning device 9.

  The pneumatic spinning device 9 twists the fiber bundle 8 supplied from the draft device 7 using a swirling air flow to generate a spun yarn 10. The specific configuration of the pneumatic spinning device 9 will be described later.

  A yarn quality measuring device 12 and a spinning sensor 13 are provided downstream of the pneumatic spinning device 9. The spun yarn 10 spun by the air spinning device 9 passes through a yarn quality measuring device 12 and a spinning sensor 13.

  The yarn quality measuring device 12 monitors the thickness of the traveling spun yarn 10 using an optical sensor (not shown). The yarn quality measuring device 12 transmits a yarn defect detection signal to a unit controller (not shown) when a yarn defect of the spun yarn 10 (a portion where the thickness of the spun yarn 10 is abnormal) is detected. The yarn quality measuring device 12 is not limited to an optical sensor, and may be configured to monitor the thickness of the spun yarn 10 with a capacitance sensor, for example. Further, the yarn quality measuring device 12 may detect foreign matter contained in the spun yarn 10 as a yarn defect.

  The spinning sensor 13 is arranged immediately downstream of the yarn quality measuring device 12. The spinning sensor 13 can detect the tension of the spun yarn 10 between the pneumatic spinning device 9 and the yarn accumulating device 14. The spinning sensor 13 transmits the detected tension detection signal to the unit controller. The unit controller detects an abnormal portion such as a weak yarn by monitoring the tension detected by the spinning sensor 13.

  A yarn accumulating device 14 is provided downstream of the yarn quality measuring device 12 and the spinning sensor 13. As shown in FIG. 2, the yarn storage device 14 includes a yarn storage roller 15 and a motor 16 that rotationally drives the yarn storage roller 15.

  The yarn accumulating roller 15 can temporarily store a certain amount of spun yarn 10 around its outer peripheral surface. When the spun yarn 10 is wound around the outer circumferential surface of the yarn accumulating roller 15, the yarn accumulating roller 15 is rotated at a predetermined rotation speed, whereby the spun yarn 10 is pulled out from the air spinning device 9 at a predetermined speed and is moved downstream. Can be transported. Moreover, since the spun yarn 10 can be temporarily stored on the outer peripheral surface of the yarn storage roller 15, the yarn storage device 14 can function as a kind of buffer. As a result, the problem that the spinning speed in the pneumatic spinning device 9 and the winding speed (speed of the spun yarn 10 wound on the package 28) do not match for some reason (for example, slack of the spun yarn 10) is eliminated. Can do.

  A yarn guide 17 and a winding device 96 are disposed downstream of the yarn storage device 14. The winding device 96 includes a cradle arm 97 that can rotatably support a bobbin for winding the spun yarn 10.

  The winding device 96 includes a winding drum 98, a traverse guide 99, and a winding drum drive motor (not shown). The winding drum 98 rotates while being in contact with the outer peripheral surface of the bobbin or the package 28 by transmitting the driving force of the winding drum drive motor. The traverse guide 99 can be engaged with the spun yarn 10. The winding device 96 drives the winding drum 98 by a winding drum drive motor while reciprocating the traverse guide 99 by a driving means (not shown). Accordingly, the winding device 96 rotates the package 28 that contacts the winding drum 98 and winds the spun yarn 10 around the package 28 while traversing the spun yarn 10.

  As illustrated in FIGS. 1 and 2, the yarn joining cart 3 includes a yarn joining device 93, a suction pipe 94, and a suction mouth 95. When yarn breakage or yarn cut occurs in a spinning unit 2, the yarn splicing carriage 3 travels on a rail (not shown) to the spinning unit 2 and stops. The suction pipe 94 captures the spun yarn 10 delivered from the pneumatic spinning device 9 and guides it to the yarn splicing device 93 while rotating in the vertical direction about the axis. The suction mouse 95 captures the spun yarn 10 from the package 28 and guides it to the yarn joining device 93 while rotating in the vertical direction about the axis. The yarn joining device 93 performs yarn joining between the guided spun yarns 10.

  Next, the pneumatic spinning device 9 will be described with reference to FIGS. 3 and 4.

  The air spinning device 9 twists the fiber bundle 8 supplied from the draft device 7 to generate a spun yarn 10. As shown in FIG. 3, the pneumatic spinning device 9 includes a nozzle block 30 and a hollow guide shaft body 38. The nozzle block 30 includes a fiber guide 31, a spinning chamber 32, and a spinning nozzle 33. The nozzle block 30 is supported by a nozzle block support portion 101 attached to the casing 5 of the spinning machine 1.

  The fiber guide 31 guides the fiber bundle 8 drafted by the draft device 7 toward the inside (downstream side) of the pneumatic spinning device 9. A guide hole 31 a is formed in the fiber guide 31, and a guide needle 31 b is provided in the fiber guide 31. The fiber bundle 8 drafted by the draft device 7 is introduced from the guide hole 31a and guided downstream so as to be wound around the guide needle 31b.

  A spinning chamber 32 is formed on the downstream side of the fiber guide 31. The spinning chamber 32 is formed between the nozzle block 30 and the hollow guide shaft body 38. The nozzle block 30 ejects compressed air (hereinafter also simply referred to as “air”) supplied from a compressed air source (not shown) from the spinning nozzle 33 to the spinning chamber 32. As a result, a swirling air flow is generated in the spinning chamber 32. The fiber bundle 8 is sent to the hollow guide shaft 38 after being twisted by the swirling air flow in the spinning chamber 32.

  The hollow guide shaft body 38 guides the fiber bundle 8 twisted by the nozzle block 30 to the downstream side while further twisting the fiber bundle 8. As shown in FIG. 3, the hollow guide shaft body 38 is supported (fixed) on the hollow guide shaft body support portion 103 via the receiving rubber 102. The hollow guide shaft body 38 includes a first member 40, a second member 50, a support portion 60, an inner cover portion 70, and an outer cover portion 80. The inner cover part 70 and the outer cover part 80 may be collectively referred to simply as “cover part”.

  As shown in FIGS. 3 and 4, the first member 40 includes a distal end portion 41, a central portion 44, and a proximal end portion 46. The first member 40 is a member formed by processing a member having a predetermined shape. In other words, the first member 40 is not a member in which a plurality of members are connected, but a single member.

  The first member 40 of the present embodiment is made of a ceramic containing 50% or more of alumina. In addition, the content rate of an alumina is arbitrary and may be 10% or more, for example. Wear resistance and toughness can be improved by constituting the 1st member 40 with ceramics containing alumina. Since the first member 40 is always in contact with the fiber bundle 8 during spinning, the life can be extended by improving the wear resistance of the first member 40.

  The first member 40 may be made of stainless steel instead of ceramics, and the surface may be coated with a diamond-like carbon film. Since diamond-like carbon has a low coefficient of friction, friction generated between the hollow guide shaft 38 and the fibers can be reduced. Therefore, the lifetime of the first member 40 can be extended. Moreover, since the turning speed of the fiber bundle 8 can be further improved, the spinning speed of the pneumatic spinning device 9 can be improved.

  The tip portion 41 is a substantially cylindrical portion located on the upstream side of the first member 40. An inlet 42 is formed at the upstream end of the tip 41. The introduction port 42 is a portion into which the fiber bundle 8 (spun yarn 10) twisted in the spinning chamber 32 is introduced. The first fiber passage 47 is a through hole formed along the central axis of the distal end portion 41. The fiber bundle 8 introduced from the introduction port 42 is sent to the downstream side through the first fiber passage 47. On the outer peripheral surface of the distal end portion 41, an O-ring attachment portion 43 that is a concave portion cut out in a ring shape is formed. An O-ring (seal part) 48 can be attached to the O-ring attachment part 43.

  The central portion 44 is a cylindrical portion located on the downstream side of the tip portion 41. The central portion 44 has a smaller outer diameter than the distal end portion 41 and the proximal end portion 46. In the central portion 44, a plurality of auxiliary nozzles 45 are formed. Each auxiliary nozzle 45 is a hole formed in a penetrating manner in a direction (radial direction) perpendicular to the axial direction of the first member 40. Compressed air is supplied to the auxiliary nozzle 45 via an air supply passage 66 (details will be described later), and the compressed air is ejected from the auxiliary nozzle 45 toward the inside (that is, the first fiber passage 47). A swirling air flow can be generated in one fiber passage 47.

  When performing yarn discharge spinning, air is jetted from both the spinning nozzle 33 and the auxiliary nozzle 45, and a swirling air flow is generated. However, air may be injected only from the auxiliary nozzle 45. The fiber bundle 8 drafted by the draft device 7 is sent to the hollow guide shaft body 38 in a loose false twist state by the swirling air flow generated in the spinning chamber 32. The swirling air flow generated in the first fiber passage 47 of the hollow guide shaft body 38 is in the opposite direction to the swirling air flow in the spinning chamber 32. Accordingly, the fiber bundle 8 is sent to the downstream side while being spun into a bundled fiber, and is discharged from the hollow guide shaft 38 as the spun yarn 10. In normal spinning performed after yarn spinning, a swirling air flow is generated in the spinning chamber 32. That is, the compressed air is injected from the spinning nozzle 33 and is not injected from the auxiliary nozzle 45. However, compressed air may be supplementarily injected from the auxiliary nozzle 45 during normal spinning. In this case, the pressure of the compressed air injected from the auxiliary nozzle 45 during normal spinning may be lower than the pressure of the compressed air injected from the auxiliary nozzle 45 during yarn discharge spinning.

  The proximal end portion 46 is a cylindrical portion located on the downstream side of the central portion 44. The outer diameter of the proximal end portion 46 is larger than the distal end portion 41 and the central portion 44. The second member 50 is attached to the downstream end portion of the base end portion 46 so as to come into contact therewith.

  As shown in FIGS. 3 and 4, the second member 50 is an elongated, substantially cylindrical member, and includes a main body portion 51 and a reduced diameter portion 52. The second member 50 is made of stainless steel. The material of the second member 50 is arbitrary and may be, for example, ceramics. However, since it is necessary to form a long hole in the axial direction with high accuracy, it is preferable that the material be easily processed.

  The second member 50 is not a member in which a plurality of members are connected, but a single member. A second fiber passage 53 is formed inside the main body 51 and the reduced diameter portion 52. The second fiber passage 53 is a passage through which the fiber bundle 8 that has passed through the first fiber passage 47 passes. The area (channel cross-sectional area) of the surface of the first fiber passage 47 perpendicular to the fiber traveling direction is smaller than the channel cross-sectional area of the second fiber passage 53. More specifically, the first fiber passage 47 is smaller than the second fiber passage 53 in any of the upstream end portion, the downstream end portion, and the average channel cross-sectional area. Accordingly, air flows from the first fiber passage 47 to the second fiber passage 53. The second fiber passage 53 is formed such that the downstream cross-sectional area is larger than the upstream cross-sectional area. Therefore, the air flows in the second fiber passage 53 toward the downstream side. The air that has flowed through the second fiber passage 53 is discharged through a yarn discharge portion 110 that is a separate member attached further downstream.

  An O-ring mounting groove 54 is formed at the upstream end of the main body 51. The O-ring mounting groove 54 is a circular groove. An O-ring 55 is attached to the O-ring attachment groove 54.

  Since the outer diameter of the reduced diameter portion 52 is smaller than the outer diameter of the main body portion 51, a step portion is formed in the vicinity of the downstream end portion of the second member 50. The second member 50 is supported by the support portion 60 via the O-ring 56 by this step portion (specifically, the downstream end portion of the main body portion 51).

  In the present embodiment, the fiber passage of the hollow guide shaft body 38 is composed of two members (first member 40 and second member 50). Therefore, the axial length of each member in which the fiber passage is formed can be suppressed. Therefore, the process which forms a fiber channel becomes easy. Further, when the hollow guide shaft body 38 is separated from the nozzle block 30 and the clogged fibers are removed, if the length in the axial direction is short, it is difficult to apply a force in the bending direction. Damage can be prevented.

  The support part 60 supports the 1st member 40 and the 2nd member 50, as shown in FIG. Although the support part 60 of this embodiment is comprised with stainless steel, it can comprise with arbitrary raw materials. A through hole 61, a second member support portion 62, a cover portion attachment portion 63, and a compressed air introduction portion 64 are formed in the support portion 60.

  A through hole 61 is formed at the center of the support portion 60 along the fiber traveling direction. The second member 50 is disposed inside the through hole 61. A second member support portion 62 is formed in the vicinity of the downstream end portion of the through hole 61. The inner diameter of the second member support portion 62 is smaller than the inner diameter of the through hole 61. The second member 50 is supported by the second member support portion 62 via the O-ring 56 described above.

  On the outer surface of the support part 60, a plurality of steps (cover part attaching part 63) are formed by varying the outer diameter. The cover part (inner cover part 70 and outer cover part 80) is attached to the cover part attaching part 63. The movement of the support part 60 is restricted by this cover part. The compressed air introduction part 64 is a cylindrical part extending in the radial direction from the through hole 61. A pipe for connecting to a compressed air source (not shown) is connected to the compressed air introducing portion 64.

  The inner cover part 70 is a member arranged so as to cover the first member 40, the second member 50, and the support part 60. The first member 40 is attached to the inner cover part 70 by inserting and fitting the first member 40 from the downstream side. As shown in FIGS. 3 and 4, the inner cover part 70 includes a first cylinder part 71, a second cylinder part 72, and a third cylinder part 73. Although the inner cover part 70 of this embodiment is comprised with resin, it can comprise with arbitrary raw materials. Unlike the first member 40, the inner cover portion 70 does not make much contact with the fiber bundle 8, and therefore, it is preferable that the inner cover portion 70 be a material that is easy to process or has a lower cost than a material having wear resistance.

  The 1st cylinder part 71 is a part located in an upstream. The first cylindrical portion 71 has an inner diameter and an outer diameter that decrease toward the upstream side. The first cylindrical portion 71 positions the first member 40 so that the distal end portion 41 protrudes by a predetermined amount by contacting the upstream end portion of the base end portion 46 of the first member 40 inserted inside. can do. The upstream end portion of the first tube portion 71 is attached so as to come into contact with the O-ring 48 attached to the O-ring attachment portion 43.

  The second cylinder part 72 is a part on the downstream side of the first cylinder part 71 and has a larger inner diameter and outer diameter than the first cylinder part 71. The third cylindrical portion 73 is a portion on the downstream side of the second cylindrical portion 72 and has a larger inner diameter and outer diameter than the second cylindrical portion 72. An outer cover part 80 is attached to the outside of the second cylinder part 72 and the third cylinder part 73. The third cylindrical portion 73 is located outside the support portion 60 (specifically, the cover portion attaching portion 63) and is supported by the cover portion attaching portion 63 via an O-ring 74.

  When compressed air is supplied from the air supply passage 66, the supplied compressed air passes between the second member 50 and the support portion 60 and flows to the upstream side (upper side in FIG. 3) in the fiber traveling direction. Since the O-ring 56 is attached between the second member 50 and the support portion 60, it is possible to prevent the supplied compressed air from leaking between the second member 50 and the support portion 60. In addition, since the O-ring 74 is attached between the support portion 60 and the inner cover portion 70, it is possible to prevent the supplied compressed air from leaking between the support portion 60 and the inner cover portion 70. Furthermore, since the O-ring 55 is attached between the first member 40 and the second member 50, it is possible to prevent the supplied air from leaking between the first member 40 and the second member 50. As described above, the amount of compressed air consumed can be reduced, and the yarn spinning can be stably performed. The O-ring 55 and the O-ring 56 prevent the compressed air from leaking from the air supply passage 66 to the second fiber passage 53, and also prevent the compressed air from leaking from the second fiber passage 53 to the air supply passage 66. doing.

  The compressed air passes through a slit 46 a (see FIG. 4) formed in the base end portion 46 and is supplied to the air storage portion 49. Note that a space through which compressed air passes may be formed by forming a linear or arc-shaped chamfer instead of the slit.

  The air storage part 49 is a space formed between the first member 40 (center part 44) and the inner cover part 70 (first cylinder part 71). The air reservoir 49 is a part of the air supply passage 66 because the supplied compressed air passes therethrough. Since the O-ring 48 is attached between the first member 40 and the inner cover part 70 as described above, the supplied compressed air leaks from between the first member 40 and the inner cover part 70. Can be prevented. The auxiliary nozzle 45 is disposed so as to be connected to the air reservoir 49 (air supply passage 66). Accordingly, the compressed air can be supplied from the auxiliary nozzle 45 to the first fiber passage 47 by supplying the compressed air to the air reservoir 49.

  The outer cover portion 80 is attached to the support portion 60 and the inner cover portion 70 as described above. The outer cover portion 80 of this embodiment is made of resin, but can be made of any material. Unlike the first member 40, the outer cover portion 80 does not make much contact with the fiber bundle 8, and therefore, it is preferable that the outer cover portion 80 be a material that is easy to process or has a lower cost than a material having wear resistance.

  A positioning part 81 is formed in the outer cover part 80. The positioning portion 81 includes a ring-shaped first contact surface 81a perpendicular to the axial direction formed on the outer peripheral portion of the outer cover portion 80, and a cylindrical second contact surface 81b perpendicular to the first contact surface 81a. It is configured. The first contact surface 81a and the second contact surface 81b are in contact with predetermined portions of the nozzle block support portion 101, respectively. Thereby, the hollow guide shaft body 38 can be positioned with respect to the fiber guide 31.

  As described above, the hollow guide shaft body 38 of the present embodiment includes the first member 40 and the second member 50. The first member 40 is formed with an introduction port 42 through which the fiber bundle 8 is introduced and a first fiber passage 47 through which the introduced fiber bundle 8 passes, and sends the fiber bundle 8 to the downstream side during yarn spinning. An auxiliary nozzle 45 arranged to generate a swirling air flow in the first fiber passage 47 is formed. The second member 50 is formed with a second fiber passage 53 through which the fiber bundle 8 that has passed through the first fiber passage 47 passes. The second member 50 is provided as a separate member from the first member 40.

  Thereby, by dividing the hollow guide shaft body 38 in the axial direction, the process of forming the fiber passage is facilitated, and the hollow guide shaft body 38 is not easily damaged even if a force in the bending direction is applied during maintenance or the like. . By forming the auxiliary nozzle 45 in the first member 40, the center of the inlet 42 and the turning center of the swirling air flow can be made to coincide with each other with high accuracy. Further, since the auxiliary nozzle 45 can be disposed near the introduction port 42, the success rate of yarn discharge spinning can be improved.

  In the hollow guide shaft body 38 of the present embodiment, the flow passage cross-sectional area of the first fiber passage 47 is smaller than the flow passage cross-sectional area of the second fiber passage 53.

  Accordingly, air easily flows from the first fiber passage 47 to the second fiber passage 53, so that the fiber bundle 8 introduced into the hollow guide shaft body 38 can be smoothly sent to the downstream side.

  The hollow guide shaft body 38 of the present embodiment includes a support portion 60 and cover portions (the inner cover portion 70 and the outer cover portion 80). The support part 60 supports the second member 50. The cover portion fixes the second member 50 to the support portion 60.

  Thereby, the position of the 2nd member 50 can be defined by restrict | limiting the movement of the support part 60 which supports the 2nd member 50 by a cover part.

  In the hollow guide shaft body 38 of the present embodiment, the cover part includes an inner cover part 70 and an outer cover part 80. The inner cover part 70 is disposed so as to cover at least a part of the first member 40, the second member 50, and the support part 60. The outer cover portion 80 covers the inner cover portion 70 and positions the first member 40 with respect to the nozzle block 30 in which the spinning nozzle 33 is formed.

  The inner member 70 and the outer cover 80 cover the first member 40 and the like, so that the first member 40 and the like can be protected. Further, since the outer cover portion 80 positions the first member 40, the position of the first member 40 with respect to the nozzle block 30 can be accurately positioned.

  In the hollow guide shaft body 38 of the present embodiment, an air supply passage 66 is formed between the first member 40 and the inner cover portion 70, and the air passing through the air supply passage 66 is ejected from the auxiliary nozzle 45. Is done.

  By forming the air supply passage 66 between the members constituting the hollow guide shaft body 38, the cost for processing and forming the air supply passage 66 can be reduced. Further, a space for providing the air supply passage 66 can be reduced.

  In the hollow guide shaft body 38 of the present embodiment, an air reservoir that temporarily stores air supplied from the auxiliary nozzle 45 to the first fiber passage 47 between the first member 40 and the inner cover portion 70. A portion 49 is provided.

  Thereby, the cost can be further reduced by using not only the air supply passage 66 but also the air reservoir 49 by utilizing the space between the members constituting the hollow guide shaft body 38. Further, the flow of air ejected from the auxiliary nozzle 45 can be made uniform, and yarn discharge spinning can be performed stably.

  Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

  The shapes of the first member 40 and the second member 50 in the above embodiment are arbitrary, and the shapes can be appropriately changed as long as the air supply passage 66 can be secured. Moreover, in the said embodiment, although the 1st member 40 was fixed by being fitted in the 1st cylinder part 71, you may fix the 1st cylinder part 71 and the 1st member 40 with an adhesive agent. In this case, since the adhesive functions as a seal portion, air leakage can be prevented without providing the O-ring 48. Moreover, the 1st member 40 may be comprised from two parts. That is, the distal end portion 41 and the central portion 44 may be configured as one portion, and the proximal end portion 46 may be configured as another portion. In this case, the material of the distal end portion 41 and the central portion 44 may be different from the material of the proximal end portion 46.

  The guide needle 31b may be omitted, and the function of the guide needle 31b may be achieved by the downstream end portion of the fiber guide 31.

  The cover part of the above embodiment includes an inner cover part 70 and an outer cover part 80. However, the cover part may be composed of one member having the functions of the inner cover part 70 and the outer cover part 80.

  At a position downstream of the air spinning device 9, instead of or in addition to the yarn accumulating device 14, a rotation roller and a nip roller pressed against the delivery roller are provided, and the spun yarn is between the delivery roller and the nip roller. 10 may be sent downstream.

  In the above embodiment, the spun yarn 10 generated by the pneumatic spinning device 9 is wound around the package 28 by the winding device 96. Instead of this configuration, a knitting machine or the like may be disposed downstream of the pneumatic spinning device 9.

1 Spinning machine (textile machine)
2 Spinning unit 7 Draft device 8 Fiber bundle 9 Pneumatic spinning device 10 Spinning yarn 30 Nozzle block 38 Hollow guide shaft body 40 First member 45 Auxiliary nozzle 47 First fiber passage 50 Second member 53 Second fiber passage 60 Support portion 70 Inside Cover part 80 Outer cover part

Claims (14)

A first fiber passage having an introduction port for introducing a fiber, and an auxiliary nozzle arranged to generate a swirling air flow in the first fiber passage for sending the fiber to the downstream side during spinning out. A first member;
A second fiber passage is formed through which the fibers that have passed through the first fiber passage pass, and a second member provided as a separate member from the first member;
A support portion for supporting the second member;
A cover portion covering the support portion so as to restrict movement of the support portion;
With
An air supply passage is formed between the first member and at least one of the support portion and the cover portion, and the auxiliary nozzle is connected to the air supply passage. Shaft body. The hollow guide shaft body according to claim 1 ,
The cover part is
An inner cover portion covering at least a part of the first member, the second member, and the support portion;
An outer cover for covering the inner cover and positioning the first member with respect to the nozzle block on which the spinning nozzle is formed;
A hollow guide shaft body comprising: The hollow guide shaft body according to claim 1 or 2 ,
Between the first member and at least one of the support part and the cover part, an air storage part that temporarily stores air supplied from the auxiliary nozzle to the first fiber passage is provided. A hollow guide shaft characterized in that The hollow guide shaft body according to claim 3 ,
A hollow guide characterized in that a seal portion for preventing air from leaking from the air storage portion is provided between the first member and at least one of the support portion and the cover portion. Shaft body. The hollow guide shaft body according to claim 4 ,
The hollow guide shaft body, wherein the seal portion is an O-ring. The hollow guide shaft body according to claim 4 ,
The hollow guide shaft body, wherein the seal portion is an adhesive that bonds the first member and the cover portion. The hollow guide shaft body according to any one of claims 1 to 6 ,
The cover part is formed with a recess or a hole,
The hollow guide shaft body, wherein the first member is attached to the cover portion by being fitted into the concave portion or the hole portion. A first fiber passage having an introduction port for introducing a fiber, and an auxiliary nozzle arranged to generate a swirling air flow in the first fiber passage for sending the fiber to the downstream side during spinning out. A first member;
A second fiber passage is formed through which the fibers that have passed through the first fiber passage pass, and a second member provided as a separate member from the first member;
A support portion for supporting the second member;
A cover portion covering the support portion so as to restrict movement of the support portion;
With
The cover part is
An inner cover portion covering at least a part of the first member, the second member, and the support portion;
An outer cover for covering the inner cover and positioning the first member with respect to the nozzle block on which the spinning nozzle is formed;
Hollow guide shaft, characterized in that Ru comprising a. A first fiber passage having an introduction port for introducing a fiber, and an auxiliary nozzle arranged to generate a swirling air flow in the first fiber passage for sending the fiber to the downstream side during spinning out. A first member;
A second fiber passage is formed through which the fibers that have passed through the first fiber passage pass, and a second member provided as a separate member from the first member;
A support portion for supporting the second member;
A cover portion covering the support portion so as to restrict movement of the support portion;
With
The cover part is formed with a recess or a hole,
The hollow guide shaft body, wherein the first member is attached to the cover portion by being fitted into the concave portion or the hole portion. A hollow guide shaft body according to any one of claims 1 to 9 ,
The hollow guide shaft body, wherein an area of a surface of the first fiber passage perpendicular to a fiber traveling direction is smaller than an area of a surface of the second fiber passage perpendicular to the fiber traveling direction. The hollow guide shaft body according to any one of claims 1 to 10 ,
The hollow guide shaft body, wherein the first member and the cover portion are made of different materials. The hollow guide shaft body according to claim 11 ,
The first member includes at least one of ceramics and diamond-like carbon;
The hollow guide shaft body, wherein the cover part includes at least one of stainless steel and resin. The hollow guide shaft body according to any one of claims 1 to 12,
A nozzle block in which a spinning nozzle is formed so as to form a spinning chamber with the hollow guide shaft body and to generate a swirling air flow acting on the fibers in the spinning chamber in the spinning chamber;
A fiber guide that is arranged to face the hollow guide shaft and guides the fiber to the first fiber passage;
An air spinning device comprising:   A textile machine comprising the pneumatic spinning device according to claim 13.

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