JP2017065898A - Thread guard member, yarn storage device, and yarn winding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thread guard member, the life of which can be lengthened by inhibiting the progress of wear of a part coming into contact with yarn, a yarn storage device, and a yarn winding machine.SOLUTION: A thread guard member includes an arm part 64 which is attached rotatably with respect to a yarn storage roller 51, and a guide part 65 which is a linear member provided in the arm part and extended in the direction of getting away from the arm part and which is brought into contact with yarn Y unwound from the yarn storage roller 51. A yarn guiding surface 66, which is composed of an arc having a curvature radius of 0.45-5.00 mm and formed in at least a part of a cross-section orthogonal to an extension direction, is formed in at least a part in the extension direction of the guide part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a yarn hooking member, a yarn accumulating device, and a yarn winding machine.

  2. Description of the Related Art A textile machine (for example, a pneumatic spinning machine that winds a spun yarn to form a package) including a yarn storage device that can temporarily store yarn is known. As such a yarn accumulating device, for example, Patent Documents 1 and 2 include a yarn accumulating roller (loosening roller) and a yarn hooking member (flyer) rotatable relative to the yarn accumulating roller. A yarn accumulating device having a configuration in which a rotational resistance with respect to a yarn accumulating roller is applied to a yarn hooking member is disclosed.

JP 2004-277946 A JP 2010-180023 A

  The yarn hooking member of the yarn accumulating device guides the yarn to the yarn accumulating roller when the yarn is hooked. A portion where the yarn is hooked in the yarn hooking member may be worn due to contact with the yarn.

  An object of the present invention is to provide a yarn hooking member, a yarn accumulating device, and a yarn winder that can suppress the progress of wear of a portion that comes into contact with the yarn and can extend the life of the yarn hooking member.

  The yarn hooking member of the present invention is a yarn hooking member attached to the yarn accumulating roller, and is provided with a support portion rotatably attached to the yarn accumulating roller, and provided in the support portion and extending in a direction away from the support portion. A guide member that comes into contact with the yarn unwound from the yarn accumulating roller, and at least part of the extending direction of the guide part is at least part of a cross section orthogonal to the extending direction. A yarn guide surface formed of an arc having a radius of curvature of 0.45 mm or more and 5.00 mm or less is formed.

  In the yarn hooking member having this configuration, the contact area between the yarn and the yarn guide surface is large with respect to the thickness of the yarn. Thereby, the pressure (surface pressure) per unit area that the yarn guide surface of the guide portion receives from the yarn can be suppressed. As a result, the progress of wear of the portion in contact with the yarn is suppressed, and the life of the yarn hooking member can be extended.

  The yarn hooking member of the present invention is a yarn hooking member that is attached to the yarn accumulating roller, and a support portion that is rotatably attached to the yarn accumulating roller, and is provided in the support portion and extends in a direction away from the support portion. And a guide portion that comes into contact with the yarn unwound from the yarn accumulating roller, and the guide portion has a first portion whose radius of curvature of a cross section perpendicular to the extending direction is a first dimension; A second portion having a radius of curvature smaller than the first dimension, and a yarn guide surface that contacts the yarn is provided on the first portion.

  In the yarn hooking member having this configuration, the contact area between the yarn and the yarn guide surface is large with respect to the thickness of the yarn. Thereby, the pressure (surface pressure) per unit area that the yarn guide surface of the guide portion receives from the yarn can be suppressed. As a result, the progress of wear of the portion in contact with the yarn is suppressed, and the life of the yarn hooking member can be extended. Furthermore, it can suppress that the size as a guide part becomes large by making the curvature radius of the 2nd part which a thread | yarn does not contact smaller than a 1st dimension. As a result, the reactivity and followability of the yarn hooking member with respect to fluctuations in load (yarn tension) are improved.

  The yarn hooking member of the present invention is a yarn hooking member that is attached to the yarn accumulating roller, and a support portion that is rotatably attached to the yarn accumulating roller, and is provided in the support portion and extends in a direction away from the support portion. A guide member that comes into contact with the yarn unwound from the yarn accumulating roller, and at least part of the extending direction of the guide part is at least part of a cross section orthogonal to the extending direction. A yarn guide surface made of an elliptic curve is formed.

  When the yarn is in contact with the yarn guide surface as described above, the contact area between the yarn and the yarn guide surface is increased as compared with the case where the yarn is in contact with the guide portion having a circular cross-sectional shape. Thereby, the pressure (surface pressure) per unit area that the yarn guide surface of the guide portion receives from the yarn can be suppressed. As a result, it is possible to suppress the progress of wear of the portion in contact with the yarn and to extend the life of the yarn hooking member.

  In the yarn hooking member of the present invention, the yarn guide surface may be formed only in part of the extending direction of the guide portion.

  In the yarn hooking member having this configuration, the yarn guide surface can be easily formed as compared with the case where the yarn guide surface is formed on the entire guide portion.

  In the yarn hooking member of the present invention, the guide portion may be formed with a hollow portion that is hollow along the extending direction.

  In the yarn hooking member having this configuration, the guide portion can be reduced in weight. Thereby, the influence of the inertia force by the dead weight at the time of moving a guide part can be reduced. As a result, the reactivity and followability of the yarn hooking member with respect to fluctuations in load (yarn tension) are improved.

  In the yarn hooking member of the present invention, the support portion includes a tip portion provided with the main body portion, a boss portion fixed to the yarn accumulating roller, and a main body portion extending in one direction between the tip portion and the boss portion. And a reinforcing part that reinforces the main body part.

  In the yarn hooking member having this configuration, the guide portion can be stably supported by the support portion.

  In the yarn hooking member of the present invention, the reinforcing portion may be provided so as to protrude from the surface of the main body portion, and may have a protruding portion extending along the direction in which the main body portion extends.

  In the yarn hooking member having this configuration, the reinforcing portion can be easily formed.

  In the yarn hooking member of the present invention, the boss portion protrudes from the main body portion, and the protruding portion is a direction in which the boss portion protrudes and a direction in which the main body portion extends on the surface of the main body portion on the side where the boss portion protrudes. It may be formed in a central region in a direction intersecting both of them, and may be formed over a predetermined length from the side where the boss portion is provided in the extending direction of the main body portion.

  In the yarn hooking member having this configuration, the main body portion can be stably supported by the support portion with a simple configuration.

  In the yarn hooking member of the present invention, the reinforcing portion is formed on at least one end portion of the main body portion in the direction intersecting both the direction in which the boss portion protrudes and the direction in which the main body portion extends. It may have a thickened part.

  In the yarn hooking member having this configuration, the main body portion can be stably supported by the support portion.

  The yarn accumulating device of the present invention includes the above-described yarn hooking member and a yarn accumulating roller to which the yarn hooking member is rotatably attached.

  The yarn winding machine of the present invention includes a draft device that drafts a fiber bundle, a spinning device that generates a yarn by twisting the fiber bundle drafted by the draft device, the yarn storage device, and a yarn storage roller. And a winding device for winding the wound yarn around the package.

  In the yarn storage device and the yarn winding machine having this configuration, the yarn hooking member that suppresses the progress of wear of the portion that comes into contact with the yarn and can prolong the life is adopted. The exchange cycle can be lengthened. As a result, the operating efficiency of the yarn storage device and the yarn winder can be improved.

  According to the present invention, it is possible to suppress the progress of wear of the portion that comes into contact with the yarn and to extend the life of the yarn hooking member.

It is a front view of the spinning machine of a first embodiment. It is a side view of the spinning unit of the spinning machine of FIG. It is the side view which expanded and showed the thread | yarn storage apparatus vicinity of FIG. FIG. 4 is a perspective view of the yarn hooking member of FIG. 3. (A) is sectional drawing which cut | disconnected the guide part of the yarn hooking member of FIG. 4 by the VV line, (B) cut | disconnected the guide part of the yarn hooking member which concerns on the modification by VV line. It is sectional drawing. (A) is sectional drawing which cut | disconnected the guide part of the yarn hooking member which concerns on 2nd embodiment by the VV line, (B) is VV line the guide part of the yarn hooking member which concerns on the modification. It is sectional drawing cut | disconnected by. (A) And (B) is sectional drawing which cut | disconnected the guide part of the yarn hooking member which concerns on the further modification of 2nd embodiment by the VV line. It is a perspective view of the yarn hooking member concerning another modification. It is a perspective view of the arm part which concerns on a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted. The dimensional ratios in the drawings do not necessarily match those described.

(First embodiment)
As shown in FIG. 1, the spinning machine 1 includes a plurality of spinning units (yarn winding machines) 2, a yarn splicing carriage 3, a first end frame 5A, and a second end frame 5B. The plurality of spinning units 2 are arranged in a line. In the following description, in the path along which the yarn Y travels (that is, the yarn path), the side where the yarn Y is generated is referred to as the upstream side, and the side where the yarn Y is wound is referred to as the downstream side.

  Each spinning unit 2 generates the yarn Y and winds it on the package P. When the yarn Y is cut by a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining cart 3 performs a yarn joining operation on the spinning unit 2.

  The first end frame 5A accommodates an air supply source for generating a swirling air flow and the like in each part of the spinning unit 2 and / or a suction source for generating a suction air flow in each part of the spinning unit 2 and the like. Yes.

  The second end frame 5B accommodates a drive motor for supplying power to each part of the spinning unit 2. The second end frame 5B is provided with a machine control device 11, a display unit D, and an input key K.

  The machine control device 11 centrally manages and controls each part of the spinning machine 1. The display unit D can display information related to the setting contents and / or state of the spinning unit 2. When the operator performs an appropriate operation using the input key K, the setting operation of the spinning unit 2 can be performed.

  As shown in FIGS. 1 and 2, each spinning unit 2 includes a draft device 6, an air spinning device 7, a yarn monitoring device 8, a tension sensor 9, in order from the upstream side in the traveling direction of the yarn Y. The yarn storage device 50, the waxing device 12, and the winding device 13 are provided. The unit controller 10 is provided for each predetermined number of spinning units 2 and controls the operation of the spinning units 2.

  The draft device 6 drafts a sliver (fiber bundle) S. The draft device 6 includes a back roller pair 14, a third roller pair 15, a middle roller pair 16, and a front roller pair 17 in order from the upstream side in the traveling direction of the sliver S. Each roller pair 14, 15, 16 and 17 has a bottom roller and a top roller. The bottom roller is rotationally driven by a drive motor provided in the second end frame 5B or a drive motor provided in each spinning unit 2. An apron belt 16 </ b> A is provided for the top roller of the middle roller pair 16. An apron belt 16B is provided for the bottom roller of the middle roller pair 16.

  The air spinning device 7 generates a yarn Y by twisting the fiber bundle F drafted by the draft device 6 by a swirling air flow. More specifically (however, illustration is omitted), the pneumatic spinning device 7 includes a spinning chamber, a fiber guide portion, a swirling air flow generation nozzle, and a hollow guide shaft body. The fiber guide unit guides the fiber bundle F supplied from the upstream draft device 6 into the spinning chamber. The swirling airflow generation nozzle is disposed around the path along which the fiber bundle F travels. When air is injected from the swirling air flow generating nozzle, a swirling air flow is generated in the spinning chamber. By this swirling air flow, the fiber ends of the plurality of fibers constituting the fiber bundle F are reversed and swirled. The hollow guide shaft body guides the yarn Y from the spinning chamber to the outside of the pneumatic spinning device 7.

  The yarn monitoring device 8 is disposed between the pneumatic spinning device 7 and the yarn storage device 50. The yarn monitoring device 8 is an optical yarn monitoring device that detects the state of the yarn Y by irradiating the traveling yarn Y with light. The yarn monitoring device 8 monitors the state of the traveling yarn Y and detects the presence or absence of a yarn defect. When the yarn monitoring device 8 detects a yarn defect, the yarn monitoring device 8 transmits a yarn defect detection signal to the unit controller 10. The yarn monitoring device 8 detects, for example, an abnormal thickness of the yarn Y and / or a foreign matter contained in the yarn Y as the yarn defect. The yarn monitoring device 8 also detects yarn breakage and the like.

  The tension sensor 9 measures the tension of the traveling yarn Y between the pneumatic spinning device 7 and the yarn storage device 50 and transmits a tension measurement signal to the unit controller 10. When the unit controller 10 determines that there is an abnormality based on the detection result of the yarn monitoring device 8 and / or the tension sensor 9, the yarn Y is cut in the spinning unit 2. Specifically, the supply of air to the pneumatic spinning device 7 is stopped and the generation of the yarn Y is interrupted, whereby the yarn Y is cut. Alternatively, the yarn Y may be cut by a cutter provided separately.

  The waxing device 12 applies wax to the yarn Y between the yarn storage device 50 and the winding device 13.

  The yarn storage device 50 takes the slack of the yarn Y between the pneumatic spinning device 7 and the winding device 13. The yarn storage device 50 has a function of stably pulling out the yarn Y from the pneumatic spinning device 7, and retains the yarn Y sent out from the pneumatic spinning device 7 at the time of the yarn joining operation by the yarn joining cart 3, so that the yarn Y is loosened. And a function of preventing the fluctuation of the tension of the yarn Y on the downstream side of the yarn storage device 50 from being transmitted to the pneumatic spinning device 7. The detailed configuration of the yarn storage device 50 will be described in detail later.

  The winding device 13 forms the package P by winding the yarn Y around the bobbin B. The winding device 13 includes a cradle arm 21, a winding drum 22, and a traverse guide 23.

  The cradle arm 21 supports the bobbin B so as to be rotatable. The cradle arm 21 is swingably supported by a support shaft 24 and brings the surface of the bobbin B or the surface of the package P into contact with the surface of the winding drum 22 with an appropriate pressure. A drive motor (not shown) provided on the second end frame 5B drives the winding drums 22 of the plurality of spinning units 2 all at once. Thereby, in each spinning unit 2, the bobbin B or the package P is rotated in the winding direction. The traverse guide 23 of each spinning unit 2 is provided on a shaft 25 shared by a plurality of spinning units 2. When the drive motor of the second end frame 5B reciprocates the shaft 25 in the direction of the rotation axis of the winding drum 22, the traverse guide 23 traverses the yarn Y with a predetermined width with respect to the rotating bobbin B or package P.

  When the yarn Y is cut in a certain spinning unit 2 or the yarn Y is cut for some reason, the yarn joining cart 3 travels to the spinning unit 2 and performs a yarn joining operation. The yarn joining cart 3 includes a suction pipe 31, a yarn joining device 37, and a suction mouth 38.

  The suction pipe 31 is rotatably supported by the support shaft 31 </ b> A, captures the yarn Y from the pneumatic spinning device 7, and guides it to the yarn joining device 37. The suction mouse 38 is rotatably supported by the support shaft 38 </ b> A, captures the yarn Y from the winding device 13, and guides it to the yarn joining device 37. The yarn joining device 37 performs yarn joining between the guided yarns Y. The yarn joining device 37 is a splicer that uses compressed air, a piecer that uses seed yarn, or a knotter that mechanically joins the yarn Y.

  When the yarn joining cart 3 performs the yarn joining operation, the package P is rotated (reversely rotated) in the anti-winding direction. At this time, the cradle arm 21 is moved by an air cylinder (not shown) so that the package P is separated from the take-up drum 22, and the package P is reversely rotated by the reverse rotation roller 36 provided in the yarn splicing carriage 3. It is done.

  The above-described yarn storage device 50 will be described in more detail. As shown in FIG. 3, the yarn storage device 50 includes a yarn storage roller 51 and a yarn hooking member 60. The yarn storage device 50 may further include a storage amount sensor 56, an upstream guide 57, a downstream guide 59, and a yarn removing member 71.

  The yarn accumulating roller 51 is fixed to the drive shaft 55 </ b> A of the electric motor 55 and is rotated by the electric motor 55. The yarn accumulating roller 51 includes a yarn accumulating portion 52, a proximal end side tapered portion 53, and a distal end side tapered portion 54. The yarn storage portion 52 is a cylindrical portion around which the yarn Y is wound, and is formed to be slightly tapered toward the tip side. The yarn storage portion 52 has a proximal end portion 52a that is a winding start side of the yarn Y and a distal end portion 52b that is a side where the yarn Y is unwound. The proximal end side taper portion 53 widens toward the upstream side from the proximal end portion 52a. The distal end side taper portion 54 is widened toward the downstream side from the distal end portion 52b.

  The proximal end side taper portion 53 receives the yarn Y introduced into the yarn accumulating roller 51 from the upstream side and smoothly guides it to the proximal end portion 52a. As a result, the yarn Y is wound around the yarn reservoir 52 in an orderly manner from the proximal end side toward the distal end side. The yarn Y wound around the yarn storage portion 52 forms a yarn layer on the yarn storage portion 52. The yarn layer is a portion where the yarn Y is wound in the yarn storage portion 52 so that the yarns Y are substantially parallel to each other. The tip side taper portion 54 prevents the occurrence of a loop-out phenomenon in which the yarn Y wound around the yarn storage portion 52 is pulled out at a time when the yarn Y is unwound from the yarn storage roller 51, and the yarn storage roller 51. The yarn Y is smoothly led out from the downstream side.

  The storage amount sensor 56 detects the storage amount of the yarn Y stored in the yarn storage roller 51 in a non-contact manner. The storage amount sensor 56 transmits the detected storage amount to the unit controller 10.

  The upstream guide 57 is disposed on the upstream side of the yarn accumulating roller 51. The upstream guide 57 appropriately guides the yarn Y with respect to the outer peripheral surface of the yarn accumulating roller 51. The upstream guide 57 prevents the twist of the yarn Y transmitted from the pneumatic spinning device 7 from being transmitted to the downstream side of the upstream guide 57.

  The downstream guide 59 is disposed on the downstream side of the yarn accumulating roller 51. The downstream guide 59 regulates the path of the yarn Y, stabilizes the travel path on the downstream side of the downstream guide 59, and guides the yarn Y.

  As shown in FIG. 2, the yarn hooking member 60 is a member that is provided on the leading end side of the yarn accumulating roller 51 and hooks the yarn Y and winds it around the yarn accumulating roller 51. As shown in FIG. 3, the yarn hooking member 60 has a flyer shaft 61 and a flyer 63. The flyer shaft 61 is provided to be rotatable about the same axis as the yarn accumulating roller 51. The flyer 63 is fixed to the tip of the flyer shaft 61 and is formed in a curved shape so that the tip is located on the tip side taper portion 54 of the yarn accumulating roller 51. In order to rotate the yarn hooking member 60 relative to the yarn accumulating roller 51, a magnetic force generating means for generating a torque of a predetermined value or more is provided between the yarn accumulating roller 51 and the flyer shaft 61.

  The yarn removing member 71 is a member that removes the yarn Y from the yarn hooking member 60, and is disposed in the vicinity of the front end side taper portion 54 of the yarn accumulating roller 51. The thread removing member 71 is supported by the support shaft 71A so that the tip end portion thereof can swing between the lowered position and the raised position. The lowered position is a position retracted from the yarn path, and the raised position is a position where the yarn Y on the yarn path is pushed up and the yarn Y is removed from the yarn hooking member 60. The thread removing member 71 is biased toward the lowered position by a spring (not shown). The yarn removing member 71 is normally located at the lowered position, and is moved to the raised position by a pneumatic cylinder (not shown) provided on the yarn joining carriage 3 during the yarn joining operation or the like.

  As shown in FIG. 4, the flyer 63 has an arm part (support part) 64 and a guide part 65. The arm portion 64 is attached to the distal end portion of the flyer shaft 61 and is configured to be rotatable together with the flyer shaft 61. The arm portion 64 includes a boss portion 64a, and the flyer shaft 61 can be attached to the boss portion 64a. The arm part 64 is formed to be elongated so as to extend from the boss part 64 a in the radial direction of the yarn accumulating roller 51.

  The guide portion 65 is fixed to the arm portion 64 and extends in a direction away from the arm portion 64 from the tip portion of the arm portion 64. The guide part 65 is a linear member formed of, for example, ceramic, iron, or piano wire. The cross-sectional shape orthogonal to the extending direction of the guide portion 65 is a circle. The guide portion 65 is formed in a shape that is appropriately curved toward the outer peripheral surface of the yarn storage roller 51 (yarn storage portion 52) by bending the linear member.

  A large-diameter portion 65a is formed in a part of the guide portion 65 in the extending direction. As shown in FIG. 5A, the large-diameter portion 65a has a circular cross-sectional shape orthogonal to the extending direction of the guide portion 65, and the diameter D1 is 0.9 mm or greater and 1.2 mm or less. The guide portion 65 is formed with a yarn guide surface 66 composed of the outer peripheral surface 66a of the large diameter portion 65a. In other words, the yarn guide surface 66 is formed by the outer peripheral surface 66a of the large-diameter portion 65a formed in a part in the extending direction of the guide portion 65. That is, the yarn guide surface 66 is an arc having a radius of curvature of 0.45 mm or more and 0.60 mm or less. The yarn guide surface 66 is a portion that contacts the yarn Y (hangs the yarn Y) and guides the yarn Y to the yarn storage unit 52. As a result, the guide unit 65 can engage with the yarn Y (hook the yarn Y) and guide the yarn Y to the outer peripheral surface (yarn storage unit 52) of the yarn storage roller 51.

  The large-diameter portion 65a may be formed integrally with other portions of the guide portion 65, or may be detachably provided on the main body of the guide portion 65 as a separate body. When the large-diameter portion 65a is provided as a separate body, the material of the large-diameter portion 65a may be different from the material of other portions of the guide portion 65 or may be the same.

  As shown in FIG. 5B, the guide portion 65 may be formed with a hollow portion 67 extending in the extending direction. The hollow portion 67 may extend from the proximal end side fixed to the arm portion 64 to the distal end side on the opposite side, or may be partially formed in the extending direction. For example, when the outer diameter D1 of the guide part 65 is 1.1 mm, the inner diameter D2 of the guide part 65 is 0.45 mm or more and 0.63 mm or less. For example, when the outer diameter D1 is 1.2 mm, the inner diameter D2 is 0.63 mm or more and 0.79 mm or less. For example, when the outer diameter D1 is 1.3 mm, the inner diameter D2 is 0.83 mm or more and 0.94 mm or less. In the yarn hooking member 60 having such a configuration, the guide portion 65 can be reduced in weight. Thereby, the influence of the inertia force by the dead weight at the time of moving the guide part 65 can be reduced. As a result, the reactivity and followability of the yarn hooking member 60 with respect to fluctuations in load (yarn tension) are improved.

  In the yarn hooking member 60 of the first embodiment, the contact area between the yarn Y and the yarn guide surface 66 is larger than the thickness of the yarn Y. Thereby, the pressure (surface pressure) per unit area that the yarn guide surface 66 receives from the yarn Y can be suppressed. As a result, the progress of wear of the portion in contact with the yarn Y is suppressed, and the life of the yarn hooking member 60 can be extended.

  Generally, the diameter of the yarn Y stored in the yarn storage roller 51 is not less than 0.1 mm and not more than 0.4 mm. Therefore, the surface pressure of the yarn guide surface 66 can be suppressed by setting the diameter of the guide portion 65 in contact with the yarn Y having such a diameter to 0.9 mm or more and 1.2 mm or less.

  In the first embodiment, the yarn guide surface 66 made of an arc having a radius of curvature of 0.45 mm or more and 0.60 mm or less has been described as an example, but the present invention is not limited to this. For example, the radius of curvature of the yarn guide surface 66 may be 5.00 mm or less (diameter is 10.0 mm or less), preferably 1.50 mm or less, and more preferably 0.000 as in the first embodiment. 60 mm or less.

(Second embodiment)
Next, the spinning machine 101 including the yarn hooking member 160 according to the second embodiment will be described. The yarn hooking member 160 according to the second embodiment is different from the yarn guiding surface 66 according to the first embodiment only in the shape of the yarn guiding surface 166 formed in the guide portion 65. This is the same as the yarn hooking member 60 according to the first embodiment. The yarn guide surface 166 formed on the guide portion 65 will be described in detail, and description of other points will be omitted.

  As shown in FIG. 6 (A), a thread guide surface 166 made of an elliptic curve formed in a part of a cross section orthogonal to the extending direction is formed on a part of the guide part 65 in the extending direction. Yes. As an example, a thread guide surface 166 formed of a part of the outer peripheral surface 166a having a semi-elliptical cross-sectional shape perpendicular to the extending direction is formed in a part of the extending direction of the guide portion 65. In other words, in the yarn hooking member 160, the yarn Y is guided by coming into contact with the yarn guide surface 166 including the outer peripheral surface 166a having a semi-elliptical cross section. In the semi-ellipse of this embodiment, the ratio of the length between the major axis and the minor axis is 2: 1. The outer peripheral surface 167a opposite to the side that becomes the yarn guide surface 166 has a circular cross-sectional shape orthogonal to the extending direction. In other words, the yarn guide surface 166 is formed by the outer peripheral surface 166a of the processed portion 165a formed in a part in the extending direction of the guide portion 65. The yarn guide surface 166 is a portion that comes into contact with the yarn Y that is unwound from the yarn storage roller 51. Such a thread guide surface 166 has, for example, a circular cross-sectional shape perpendicular to the extending direction, and presses a part of the outer peripheral surface of the guide portion 65 having a diameter D1 of 0.9 mm to 1.2 mm. Can be formed.

  In the yarn hooking member 160 of the second embodiment, when the yarn Y contacts the yarn guide surface 166 as described above, the yarn Y and the yarn are compared with the case where the yarn Y contacts the guide portion having a circular cross section. The contact area with the guide surface 166 increases. Thereby, the pressure (surface pressure) per unit area that the yarn guide surface 166 receives from the yarn Y can be suppressed. As a result, it is possible to suppress the progress of wear of the portion in contact with the yarn Y and to extend the life of the yarn hooking member 160.

  As another example, as shown in FIG. 6B, a part of the extending direction of the guide portion 65 may have an elliptical cross-sectional shape orthogonal to the extending direction. Further, as shown in FIG. 7A, the outer peripheral surface 167a opposite to the side that becomes the yarn guide surface 166 may be formed flat or as shown in FIG. 7B. It may be formed in a concave shape. In any of these cases, the yarn Y is guided by contacting the yarn guide surface 166 formed of the outer peripheral surface 166a having a semi-elliptical cross section.

  In any of these cases, since the radius of curvature of the second portion S2 that does not contact the yarn Y is smaller than the radius of curvature of the first portion S1, the size of the guide portion 65 is prevented from increasing. be able to. As a result, the reactivity and followability of the yarn hooking member 160 with respect to fluctuations in load (yarn tension) are improved.

  In any of these cases, as shown in FIG. 5B, the guide portion 65 may be formed with a hollow portion 67 extending in the extending direction. The hollow portion 67 may extend from the proximal end side fixed to the arm portion 64 to the distal end side on the opposite side, or may be partially formed.

  The guide portion 65 is provided with a yarn guide surface 166, a portion (first portion) S1 having a large curvature radius (small curvature), and a portion (first curvature) having a smaller curvature radius (large curvature) than the yarn guide surface 166. Two parts) S2. When the yarn Y comes into contact with the outer peripheral surface of the first portion S1, for example, the contact area between the yarn Y and the yarn guide surface 166 increases as compared with the case where the yarn Y comes into contact with the outer peripheral surface of the second portion S2. . Thereby, the pressure (surface pressure) per unit area that the yarn guide surface 166 receives from the yarn Y can be suppressed.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.

<Modification 1>
In the above-described embodiments (first and second embodiments), the yarn guide surfaces 66, 166 are formed by the large-diameter portion 65a or the outer peripheral surfaces 66a, 166a of the processed portion 165a formed in a part in the extending direction of the guide portion 65. Although the example which is formed was demonstrated and demonstrated, this invention is not limited to this.

  For example, as shown in FIG. 8, the guide portion 265 is entirely perpendicular to the extending direction as shown in FIG. 5A from the base end side to the opposite distal end side in the extending direction. A linear member having a circular cross-section and a diameter of 0.9 mm to 10.0 mm (preferably 3.00 mm or less, more preferably 1.20 mm or less) may be used. The yarn guide surface 266 is formed in part of the extending direction of the guide portion 265, and the outer peripheral surface 265a of the guide portion 265 (the radius of curvature is 0.45 mm or more and 5.00 mm or less (preferably 1.50 mm or less). More preferably, it is formed by an arc of 0.60 mm or less. Also in this case, the guide part 265 may have a hollow part 67 as shown in FIG. 6A and 6 described in the second embodiment as well as the guide portion 265 having the cross-sectional shape as shown in FIGS. 5A and 5B described in the first embodiment. (B), the guide part 365 which has a cross-sectional shape as shown in any of FIG. 7 (A) and FIG. 7 (B) may be used. The yarn guide surface 366 is formed by an outer peripheral surface 365a of the guide portion 365 in a part in the extending direction of the guide portion 365.

  Even in these cases, it is possible to suppress the progress of wear of the portion in contact with the yarn Y and to extend the life of the yarn hooking members 60 and 160.

<Modification 2>
In the above description, as a guide portion having a first portion S1 having a first radius of curvature of the cross section perpendicular to the extending direction and a second portion S2 having a radius of curvature smaller than the first dimension, the second embodiment ( A part of the guide portion 65 in the extending direction is provided with a yarn guide surface 166 made of an elliptic curve formed in at least a part of a cross section orthogonal to the extending direction.) However, it is not limited to this. The guide portion has a radius of curvature having a cross section perpendicular to the extending direction of, for example, 0.45 mm or more and 5.0 mm or less (preferably 1.50 mm or less, more preferably 0.60 mm or less) (first dimension). And an arc (second portion) having a radius of curvature of 0.20 mm or more and less than 0.45 mm.

<Other variations>
One or two or more coating layers may be formed on the surfaces of the guide portions 65, 265, and 365 according to the embodiment or the modification. When a single coating layer is formed, the coating layer may be formed by DLC (Diamond-like Carbon) coating. When a two-layer coating film is formed, the main body portion (piano wire or steel material such as spring steel) forming the guide portions 65, 265, 365 is covered with a layer formed of hard chrome, A layer formed of hard chrome may be covered with a layer formed of DLC. Thereby, in the guide portions 65, 265, and 365, the progress of wear of the portion that comes into contact with the yarn Y can be suppressed, and the life of the yarn hooking members 60 and 160 can be extended. Since the surfaces of the yarn guide surfaces 66, 166, 266, and 366 can be made smooth, the quality of the yarn Y can be improved.

  In the embodiment or the modification, in order to rotate the yarn hooking members 60 and 160 relative to the yarn accumulating roller 51, a torque of a predetermined value or more is generated between the yarn accumulating roller 51 and the flyer shaft 61. Although an example in which such magnetic force generating means is provided has been described, the yarn hooking members 60 and 160 and the yarn accumulating roller 51 may be rotated independently by using different motors.

  The yarn hooking members 60 and 160 according to the embodiment or the modified example have been described by taking the example in which the arm portion 64 and the guide portions 65, 265, and 365 are formed as separate bodies, but are integrally formed. Also good.

  The shape of the yarn accumulating roller 51 is not limited to the shape described in the above embodiment and the shape illustrated in FIG. For example, the tip side taper portion 54 may be omitted.

  The arm portion 64 according to the embodiment or the modification may have a shape different from the shape illustrated in FIG. 4 or FIG. For example, as shown in FIG. 9, the arm portion (support portion) 464 includes a tip portion 401 provided with guide portions 65, 265, 365, a boss portion 403 fixed to the yarn accumulating roller 51, and a tip portion 401. And a boss portion 403 may be provided with a main body portion 402 extending in one direction, and a protruding portion 404 as a reinforcing portion that reinforces the main body portion 402. By providing the protruding portion 404 on the main body portion 402, the guide operation of the yarn Y by the guide portions 65, 265, and 365 is stabilized. In FIG. 9, only the tip portion 401 where the guide portions 65, 265, 365 are provided is described, and the description of the guide portions 65, 265, 365 is omitted.

  The protruding portion 404 is provided so as to protrude from the surface 402a of the main body portion 402, and extends along the direction in which the main body portion 402 extends (direction L shown in FIG. 9). The boss portion 403 protrudes from the main body portion 402. The protruding portion 404 is a direction orthogonal to (intersects with) the direction in which the boss portion 403 protrudes and the direction in which the main body portion 402 extends (the direction shown in FIG. 9). W) is provided in the central region. The protruding portion 404 has a predetermined length from the side where the boss portion 403 is provided in the extending direction of the main body portion 402 (in the example shown in FIG. 9, ½ of the length in the extending direction of the main body portion 402). It is formed over. The length of the protrusion 404 is not limited to the length shown in FIG. 9, but extends to the vicinity of the tip, that is, the length equivalent to the length in the extending direction of the main body 402. It may be formed. In the example illustrated in FIG. 9, the example in which the protrusion amount from the surface 402 a of the main body portion 402 gradually decreases from the boss portion 403 toward the distal end portion 401 is described. May be smaller or may be constant.

  In addition to or instead of the protruding portion 404 as the reinforcing portion, a direction orthogonal to (intersects) both the direction in which the boss portion 403 protrudes and the direction in which the main body portion 402 extends in the main body portion 402 (short) Thickened portions 405A and 405B formed at both ends in the hand direction) may be provided. The thickened portions 405A and 405B may be formed not only at both ends in the short direction of the main body portion 402 but also only at one end portion. The length in the extending direction L of the thickened portions 405A and 405B is not limited to the length shown in FIG. 9, but extends to the vicinity of the vicinity of the distal end portion (that is, the extending direction of the main body portion 402). May be formed to a length equivalent to the length in FIG. Further, in the example shown in FIG. 9, the thickness increase from the surface 402a of the main body portion 402 (thickness increase amount based on the central region where the thickness increasing portions 405A and 405B are not formed in the main body portion 402) is the boss portion. It gradually decreases from 403 toward the tip 401. However, the amount of increase in thickness is not limited to this example, and may be reduced stepwise from the boss portion 403 toward the tip portion 401 or may be constant.

  In the above embodiment or the modification, the pneumatic spinning device is disposed so as to be held by the fiber guide portion and protrude into the spinning chamber in order to prevent the twist of the fiber bundle from being transmitted to the upstream side of the pneumatic spinning device. A needle may be further provided. In addition, the pneumatic spinning device may prevent the twist of the fiber bundle from being transmitted to the upstream side of the pneumatic spinning device by using the downstream end portion of the fiber guide portion instead of such a needle. Further, the pneumatic spinning device may include a pair of air jet nozzles that twists the fiber bundle in opposite directions instead of the above configuration.

  In the above-described embodiment or modification, the spinning unit 2 has a function in which the yarn storage device 50 draws the yarn Y from the pneumatic spinning device 7. However, a delivery roller and a nip roller are provided, and the delivery roller and the nip roller serve as the pneumatic spinning device 7. The yarn Y may be pulled out of the thread.

  In the embodiment or the modification described above, in the spinning machine 1, each device is arranged so that the yarn Y supplied on the upper side is wound on the lower side in the machine table height direction. Instead of the above configuration, each device may be arranged such that the yarn supplied on the lower side is wound up on the upper side.

  In the above embodiment or the modification, the spinning machine 1 is driven by at least one of the bottom rollers of the draft device 6 and the traverse guide 23 by power from the second end frame 5B (that is, common to the plurality of spinning units 2). It had been. Instead of the above configuration, each part of the spinning unit 2 (for example, a drafting device, a spinning device, a winding device, etc.) may be driven independently for each spinning unit 2.

  In the above embodiment or the modification, the tension sensor 9 may be arranged on the upstream side of the yarn monitoring device 8 in the traveling direction of the yarn Y. The unit controller 10 may 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 may be omitted.

  In FIG. 1, the spinning machine 1 is illustrated so as to wind up the cheese-shaped package P, but it is also possible to wind up the cone-shaped package. In the case of a cone-shaped package, yarn slack is generated by traverse of the yarn, but the slack can be absorbed by the yarn storage device 50. The material and shape of each component are not limited to the materials and shapes described above, and various materials and shapes can be employed.

  DESCRIPTION OF SYMBOLS 1,101 ... Spinning machine, 2 ... Spinning unit (yarn winding machine), 3 ... Yarn splicing cart, 50 ... Yarn storage device, 51 ... Yarn storage roller, 52 ... Yarn storage part, 55 ... Electric motor, 57 ... Upstream side Guide, 59 ... downstream side guide, 60, 160 ... thread hook member, 61 ... flyer shaft, 63 ... flyer, 64, 464 ... arm part (support part), 65, 265, 365 ... guide part, 65a ... large diameter part , 66, 166, 266, 366 ... thread guide surface, 66a, 166a ... outer peripheral surface, 67 ... hollow part, 165a ... processed part, 401 ... tip part, 402 ... main body part, 403 ... boss part, 404 ... projecting part, 405A, 405B ... thickened part, S1 ... first part, S2 ... second part.

Claims (11)

A yarn hooking member attached to the yarn storage roller,
A support portion rotatably attached to the yarn storage roller;
A linear member provided in the support portion and extending in a direction away from the support portion, and a guide portion that comes into contact with the yarn unwound from the yarn storage roller;
With
A thread guide surface made of an arc having a radius of curvature of 0.45 mm or more and 5.00 mm or less formed in at least a part of a cross section orthogonal to the extending direction is formed in at least a part of the extending direction of the guide portion. A thread hooking member. A yarn hooking member attached to the yarn storage roller,
A support portion rotatably attached to the yarn storage roller;
A linear member provided in the support portion and extending in a direction away from the support portion, and a guide portion that comes into contact with the yarn to be unwound from the yarn storage roller;
With
The guide portion is provided with a first portion having a first radius of curvature of a cross section perpendicular to the extending direction, and a second portion having a radius of curvature smaller than the first dimension,
A yarn hooking member, wherein a yarn guide surface that contacts the yarn is provided in the first portion. A yarn hooking member attached to the yarn storage roller,
A support portion rotatably attached to the yarn storage roller;
A linear member provided in the support portion and extending in a direction away from the support portion, and a guide portion that comes into contact with the yarn to be unwound from the yarn storage roller;
With
A yarn hooking member in which a yarn guide surface made of an elliptic curve formed in at least a part of a cross section orthogonal to the extending direction is formed in at least a part of the extending direction of the guide portion.   The yarn hooking member according to any one of claims 1 to 3, wherein the yarn guide surface is formed only in a part of the guide portion in the extending direction.   The yarn hooking member according to any one of claims 1 to 4, wherein a hollow portion that is hollow along the extending direction is formed in the guide portion.   The support portion includes a tip portion provided with the guide portion, a boss portion fixed to the yarn accumulating roller, a body portion extending in one direction between the tip portion and the boss portion, and the body. A yarn hooking member according to any one of claims 1 to 5, comprising a reinforcing portion for reinforcing the portion.   The yarn hooking member according to claim 6, wherein the reinforcing portion is provided so as to protrude from a surface of the main body portion, and has a protruding portion extending along a direction in which the main body portion extends. The boss part protrudes from the main body part,
The protruding portion is provided in a central region in a direction intersecting a direction in which the boss portion protrudes and a direction in which the main body portion extends, on the surface of the main body portion on the side where the boss portion protrudes. The yarn hooking member according to claim 7, wherein the yarn hooking member is formed over a predetermined length from a side where the boss portion is provided in the extending direction of the main body portion.   The reinforcing portion has a thickened portion formed at at least one end portion of both end portions in a direction intersecting a direction in which the boss portion protrudes and a direction in which the main body portion extends in the main body portion. The yarn hooking member according to any one of claims 6 to 8. The yarn hooking member according to any one of claims 1 to 9,
A yarn storage roller on which the yarn hooking member is rotatably attached;
A yarn storage device. A draft device for drafting fiber bundles;
A spinning device for producing a yarn by twisting the fiber bundle drafted by the draft device;
The yarn storage device according to claim 10, wherein the yarn generated by the spinning device is stored.
A winding device for winding the yarn stored in the yarn storage roller to form a package;
A yarn winding machine.

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