JP2017077949A - Thread winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thread winding device that can simplify operation at the time of starting winding of a thread around a thread storage roller.SOLUTION: A thread winding device 2 comprises: a thread supply part 6 that can supply a thread 20; a thread storage part 18 that pulls out the thread 20 from the thread supply part 6 and stores the thread; and a winding part 8 that winds the thread 20 stored in the thread storage part 18 to form a package 30. The thread storage part 18 has: a thread storage roller 32 that is rotated around a rotary shaft C to wind the thread 20 pulled out from the thread supply part 6 around an outer peripheral surface 32a and then stores the thread; and a ring member 46 which is wound around the outer peripheral surface 32a of the thread storage roller 32 to contact the thread 20 which is pulled out from the thread storage roller 32 by the winding part 8, and imparts resistance to the thread 20. On the outer peripheral surface 32a of the thread storage roller 32, at an area striding across a mounting position for the ring member 46 in a direction along the rotary shaft R is formed a recessed part 38.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a yarn winding device.

  Conventionally, as a yarn winding device, a yarn supply unit that supplies yarn, a yarn storage unit that stores yarn supplied from the yarn supply unit, and a winding that winds the yarn stored in the yarn storage unit to form a package An apparatus including a take-up unit is known (see, for example, Patent Document 1). In the yarn winding device described in Patent Document 1, the yarn storage unit includes a yarn storage roller that winds and stores the yarn from the yarn supply unit around the outer peripheral surface, and a rubber band (ring member) attached to the outer peripheral surface of the yarn storage roller. ) And. In this yarn winding device, resistance is applied to the yarn drawn from the yarn accumulating roller by a rubber band, and an appropriate tension is applied to the yarn, thereby stabilizing the unwinding of the yarn from the yarn accumulating roller.

JP-A-2015-000777

  In the yarn winding device described in Patent Document 1, when starting winding of the yarn around the yarn accumulating roller, the yarn drawn from the yarn accumulating roller is surrounded by a ring member attached to the outer peripheral surface of the yarn accumulating roller. As described above, an operation of passing the yarn end between the outer peripheral surface of the yarn accumulating roller and the ring member (inner radial direction of the ring member) is performed. However, the operation of passing the yarn end between the outer peripheral surface of the yarn accumulating roller and the ring member is precise, and the yarn must pass through in a state where the ring member is spread away from the outer peripheral surface of the yarn accumulating roller. Therefore, simplification of work is required.

  An object of the present invention is to provide a yarn winding device that can simplify the operation at the start of winding of a yarn around a yarn accumulating roller.

  The yarn winding device of the present invention forms a package by winding a yarn supply unit capable of supplying a yarn, a yarn storage unit that draws out and stores the yarn from the yarn supply unit, and a yarn stored in the yarn storage unit A yarn accumulating portion, and the yarn accumulating portion is wound around the outer circumferential surface of the yarn accumulating roller, and the yarn accumulating portion is wound around the outer circumferential surface of the yarn accumulating roller. A ring member that comes into contact with the yarn drawn from the yarn accumulating roller by the winding unit and imparts resistance to the yarn, and on the outer peripheral surface of the yarn accumulating roller, the attachment position of the ring member is along the rotation axis A concave portion is provided in the region straddling the direction.

  In this yarn winding device, a recess is provided in a region straddling the attachment position of the ring member in the direction along the rotation axis on the outer peripheral surface of the yarn accumulating roller. For this reason, by passing the yarn end from one side in the direction along the rotation axis in the recess to the other side, the yarn end can be easily passed through the inner side in the radial direction of the ring member. Accordingly, it is possible to simplify the work at the start of winding of the yarn around the yarn accumulating roller.

  In the yarn winding device of the present invention, the recess may constitute a groove extending in the direction along the rotation axis. In this case, since the recess constitutes a groove extending in the direction along the rotation axis, it is easy to pass the yarn end radially inward of the ring member, and the work at the start of winding the yarn around the yarn accumulating roller is further simplified. can do.

  In the yarn winding device according to the present invention, a retractable member that forms a surface along the outer peripheral surface of the yarn accumulating roller at a position corresponding to the mounting position of the ring member in the recess, and that can be immersed so that the surface enters the recess. May be provided. In this case, since the surface along the outer peripheral surface of the yarn accumulating roller is formed by the retracting member when winding the yarn, the tension applied by the ring member to the yarn drawn from the yarn accumulating roller can be made uniform in the circumferential direction. Further, since the retractable member is retractable so that the surface enters the recess, the ring member can be inserted through the recess by allowing the retractable member to be retracted when starting the winding of the yarn around the yarn storage roller. The yarn end can be easily passed through the radially inner side.

  In the yarn winding device of the present invention, the outer peripheral surface of the yarn storage roller has a storage region in which the yarn is wound and stored, and a unwinding region in which the ring member is wound, and the concave portion is in contact with the storage region. It may be provided over the area. In this case, the yarn end can be guided to the upstream side of the yarn accumulating roller by passing the yarn end through the recess. Thereby, the operation | work at the time of the winding start of the thread | yarn with respect to a thread | yarn storage roller can be simplified further.

  In the yarn winding device of the present invention, the ring member is configured to be elastic and capable of expanding the diameter, and the circumferential length of the ring member in a state where the diameter is not expanded is smaller than the circumferential length of the unwinding region. The ring member may be wound around the yarn accumulating roller in an expanded state. In this case, a predetermined tension can be applied to the yarn to be unwound.

  The yarn winding device of the present invention may further include a threading unit that blows air from the winding unit side to the yarn supplying unit side in the recess. In this case, the yarn end can be blown into the concave portion by blowing air into the concave portion by the threading portion, and the yarn end can be passed through the inner side in the radial direction of the ring member. Thereby, it becomes possible to further simplify the work at the start of winding of the yarn around the yarn accumulating roller.

  In the yarn winding device according to the present invention, a retractable member that forms a surface along the outer peripheral surface of the yarn accumulating roller at a position corresponding to the mounting position of the ring member in the recess, and that can be immersed so that the surface enters the recess. And the threading part may have a pressing part that presses the retracting member when the air is blown into the recessed part to be immersed in the recessed part. In this case, since the threading part has a pressing part that presses the retracting member when the air is blown into the recessed part and is immersed in the recessed part, for example, the operator manually presses the retracting member into the recessed part. There is no need to immerse the inside of the yarn, and the work at the start of winding of the yarn around the yarn accumulating roller can be further simplified.

  The yarn winding device of the present invention includes a roller driving unit that rotates a yarn accumulating roller, a threading unit driving unit that advances and retracts the threading unit with respect to the yarn accumulating roller, a threading unit, a roller driving unit, and a threading unit. A first control unit that controls the operation of the drive unit, wherein the first control unit rotates the yarn accumulating roller by the roller drive unit to a rotation position at which the threading unit can blow air into the recess. Alternatively, the threading part driving part may be made to approach the thread accumulating roller, the pressing part may be pressed into the recess by the pressing part, and air may be blown into the recess by the threading part. In this case, it is possible to automate the operation of passing the yarn end radially inside the ring member by cooperating the threading portion, the roller driving portion, and the threading portion driving portion. Accordingly, it is possible to further simplify the work at the start of winding of the yarn around the yarn accumulating roller.

  In the yarn winding device of the present invention, the yarn threading portion blows air into the concave portion, so that the first yarn end, which is the yarn end of the yarn wound on the package, is blown into the concave portion. A yarn joining device that performs yarn joining, a yarn feeding portion that captures the first yarn end blown into the recess by the threading portion, and sends the captured first yarn end to the yarn joining device, a yarn joining device, and a yarn And a second control unit that controls the operation of the feeding unit. The second control unit captures the first yarn end by the yarn feeding unit when the threading unit blows the first yarn end into the recess. The first yarn end and the second yarn end, which is the yarn end of the yarn on the yarn supplying portion side, may be spliced by the yarn joining device side. In this case, the operation of joining the first yarn end and the second yarn end can be automated by cooperating the yarn joining device and the yarn feeding section. Accordingly, it is possible to further simplify the work at the start of winding of the yarn around the yarn accumulating roller.

  In the yarn winding device of the present invention, a yarn feeding bobbin may be supported by the yarn feeding unit. In this case, in the yarn winding device in which the yarn supplying bobbin is supported by the yarn supplying unit, the tension variation when the yarn is unwound from the yarn supplying bobbin is absorbed by the yarn accumulating unit. Not communicated to. Therefore, it is possible to wind up a high-quality package that is not affected by fluctuations in tension when the yarn is unwound from the yarn feeding bobbin.

  According to the present invention, it is possible to simplify the operation at the start of winding of the yarn around the yarn accumulating roller.

It is a schematic front view of the automatic winder which concerns on embodiment. It is a schematic side view of the winder unit of FIG. FIG. 2 is a cross-sectional view of a part of the main part of the winder unit in FIG. 1. It is a schematic perspective view of the principal part in the winder unit of FIG. It is a schematic sectional drawing of the principal part in the winder unit of FIG. It is another schematic sectional drawing of the principal part in the winder unit of FIG. It is a flowchart showing the processing flow at the time of the winding start of the thread | yarn with respect to a thread | yarn storage roller.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted. “Upstream” and “downstream” mean upstream and downstream in the direction of yarn travel during spinning, respectively.

  As shown in FIG. 1, an automatic winder 1 includes a plurality of winder units (yarn winding devices) 2 arranged side by side, a machine base control device 3, a yarn feeding bobbin supply device 4, a doffing device 5, And a blower box (not shown).

  The machine base control device 3 is configured to be communicable with each winder unit 2. An operator of the automatic winder 1 can manage a plurality of winder units 2 in a centralized manner by appropriately operating the machine control device 3. The machine control device 3 controls the operations of the yarn feeding bobbin supply device 4 and the doffing device 5.

  The yarn supplying bobbin supplying device 4 sets the yarn supplying bobbins 21 one by one on the transport tray 26. The yarn supplying bobbin supply device 4 supplies the yarn supplying bobbin 21 set on the transport tray 26 to each of the plurality of winder units 2.

  The doffing device 5 travels to the position of the winder unit 2 when the package 30 becomes full in the winder unit 2 (a state in which a predetermined amount of yarn 20 is wound), Remove. The doffing device 5 sets an empty winding bobbin 22 to the winder unit 2 from which the package 30 has been removed.

  Next, the configuration of the winder unit 2 will be described. As shown in FIG. 2, the winder unit 2 includes a yarn supplying unit 6, a yarn accumulating unit 18, and a winding unit 8. In the winder unit 2, the yarn 20 of the yarn feeding bobbin 21 of the yarn feeding unit 6 is unwound, the unwound yarn 20 is temporarily stored in the yarn storage unit 18, and then wound around the winding bobbin 22 to form a package 30. To do.

  The yarn supplying unit 6 is configured to be able to supply the yarn 20. The yarn supplying section 6 supports the yarn supplying bobbin 21 set on the transport tray 26 at a predetermined position. The yarn supplying section 6 is configured so that the yarn 20 can be unwound from the yarn supplying bobbin 21. When all the yarns 20 are unwound from the yarn supplying bobbin 21, the yarn supplying unit 6 discharges the empty yarn supplying bobbin 21, and supplies a new yarn supplying bobbin 21 from the yarn supplying bobbin supplying device 4. receive.

  The yarn storage unit 18 is disposed between the yarn supply unit 6 and the winding unit 8. The yarn storage unit 18 pulls out the yarn 20 from the yarn supply unit 6, temporarily stores the pulled-out yarn 20, and then supplies the yarn 20 to the winding unit 8. The yarn storage unit 18 includes a yarn storage roller 32 that can wind the yarn 20 and a roller drive motor (roller drive unit) 33 that rotationally drives the yarn storage roller 32. The roller drive motor 33 rotates (positively rotates) the yarn accumulating roller 32 in a direction in which the yarn 20 from the yarn supplying unit 6 is wound up. Further, the roller drive motor 33 rotates (reversely rotates) the yarn accumulating roller 32 in a direction opposite to the winding direction.

  The winding unit 8 includes a cradle 23 configured so that the winding bobbin 22 can be mounted, and a traverse drum 24 that drives the winding bobbin 22 while traversing the yarn 20. The cradle 23 rotatably supports the take-up bobbin 22 (or the package 30). The cradle 23 is configured such that the outer peripheral surface of the supporting package 30 can contact the outer peripheral surface of the traverse drum 24.

  The traverse drum 24 is rotationally driven by an unillustrated drive source (such as an electric motor) and rotates while being in contact with the winding bobbin 22 or the outer peripheral surface of the package 30, thereby rotating the winding bobbin 22 in a driven manner. As a result, the yarn 20 stored in the yarn storage unit 18 can be unwound and pulled out, and wound on the winding bobbin 22. A traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse of the yarn 20 with a predetermined width can be performed by the traverse groove. With the above configuration, the yarn 30 can be wound around the winding bobbin 22 while traversing to form a package 30 having a predetermined length and a predetermined shape.

  The winder unit 2 includes various devices in a yarn traveling path from the yarn supply unit 6 to the winding unit 8 via the yarn storage unit 18. Specifically, on the yarn path (yarn traveling path) of the yarn 20, the unwinding assisting device 10 and the first blow-feeding unit are sequentially arranged from the upstream yarn supplying unit 6 side toward the downstream yarn storage unit 18 side. 11, the second catching unit 12, the yarn joining device 13, the first catching unit 14, the tension applying unit 15, the cutter 16, the yarn monitoring device (clearer) 17, and the second blowing unit 41 (yarn) And a feeding portion).

  The unwinding assisting device 10 brings the movable member 27 into contact with the balloon formed on the upper portion of the yarn supplying bobbin 21 by swinging the yarn 20 to be unwound from the yarn supplying bobbin 21 so that the size of the balloon is appropriately set. By controlling this, the unwinding of the yarn 20 is assisted.

  The first blowing section 11 is an air soccer device arranged at a position close to the unwinding assisting device 10 on the downstream side of the unwinding assisting device 10. The 1st blowing part 11 forms the air flow which blows the thread | yarn 20 to the 1st capture | acquisition part 14 by ejecting compressed air. Therefore, for example, when a yarn breakage occurs, the yarn blowing bobbin 21 side can be blown toward the yarn joining device 13 side by operating the first blowing unit 11.

  In the case immediately after the new yarn supplying bobbin 21 is supplied to the yarn supplying unit 6, the yarn 20 is not sufficiently pulled out from the yarn supplying bobbin 21, and therefore the yarn end of the first blowing unit 11 may be threaded. It may be difficult to blow to the joint device 13 side. In consideration of this, the yarn feeding section 6 of the winder unit 2 is provided with an auxiliary blowing section 28.

  The auxiliary blow-feed unit 28 blows the compressed air into the hollow conveyance tray 26 and the yarn feeding bobbin 21, so that the yarn 20 of the yarn feeding bobbin 21 is put on the tip of the yarn feeding bobbin 21. An air flow to be blown toward the first blowing section 11 side is formed. When the newly supplied yarn supplying bobbin 21 is supported by the yarn supplying unit 6, the auxiliary blowing unit 28 and the first blowing unit 11 operate in conjunction with each other, whereby the yarn on the yarn supplying bobbin 21 side is operated. The end can be reliably sent toward the yarn joining device 13 side.

  The second catcher 12 is disposed at a position close to the yarn joining device 13 on the upstream side of the yarn joining device 13. The second catching unit 12 is connected to a negative pressure source (not shown), and generates a suction air flow at the time of yarn joining to suck and catch the yarn 20 on the yarn storage unit 18 side.

  The yarn joining device 13 performs yarn joining of the divided yarn 20. The yarn joining device 13 is used when the yarn monitoring device 17 detects a yarn defect and cuts the yarn 20 with the cutter 16, when the yarn 20 being unwound from the yarn feeding bobbin 21 is cut, or when the yarn is fed. When the yarn 20 between the yarn supplying bobbin 21 and the yarn accumulating portion 18 is divided, such as when the bobbin 21 is replaced, the yarn 20 on the yarn supplying bobbin 21 side and the yarn accumulating portion 18 are separated. The side yarn 20 is spliced. The yarn joining device 13 is arranged at a position slightly retracted from the yarn path. The yarn joining device 13 can connect the introduced yarn ends to bring the yarn 20 into a continuous state. As the yarn joining device 13, a device using a fluid such as compressed air or a mechanical device can be used.

  The first catching portion 14 is disposed at a position close to the yarn joining device 13 on the downstream side of the yarn joining device 13. The 1st capture | acquisition part 14 is comprised as a cylindrical member by which the opening was formed in the front-end | tip part while being connected to the negative pressure source not shown. The first capturing unit 14 includes an advance / retreat drive unit 29. The advance / retreat drive unit 29 advances and retracts the first capturing unit 14 with respect to the yarn path.

  When the first catching portion 14 is approaching the yarn path, the first catching portion 14 generates a suction air flow on the leading end side thereof, and thereby the yarn end from the yarn feeding bobbin 21 blown by the first blow-feeding portion 11. Aspirate and capture. When the yarn 20 is cut by the cutter 16, the first catching unit 14 sucks and catches the yarn end of the cut yarn 20 on the yarn feeding bobbin 21 side. Furthermore, the first capturing unit 14 may be configured to suck and remove the fluff and the like attached to the traveling yarn 20 by generating a suction air flow on the tip side thereof. The first catching section 14 can introduce the yarn end into the yarn joining device 13 by retreating from the yarn path while catching the yarn end of the yarn supplying bobbin 21.

  The tension applying unit 15 applies a predetermined tension to the traveling yarn 20. The tension applying unit 15 is configured as a gate type in which movable comb teeth are arranged with respect to fixed comb teeth, and applies a predetermined resistance by running the thread 20 between the comb teeth. The movable comb teeth are configured to be movable by, for example, a solenoid so that the comb teeth are engaged or released. Thereby, the tension applying unit 15 can adjust the tension applied to the yarn 20. The configuration of the tension applying unit 15 is not particularly limited, and may be, for example, a disk type tension applying unit.

  The yarn monitoring device 17 detects a yarn defect such as a slab or foreign matter by monitoring the thickness of the yarn 20 with an appropriate sensor. A cutter 16 is disposed at a position close to the yarn monitoring device 17 on the upstream side of the yarn monitoring device 17. The cutter 16 cuts the yarn 20 immediately when the yarn monitoring device 17 detects a yarn defect.

  The cutter 16 and the yarn monitoring device 17 are accommodated in a common housing 19. The housing 19 that houses the yarn monitoring device 17 is disposed at a position close to the tension applying unit 15 on the downstream side of the tension applying unit 15. With this configuration, since the yarn monitoring device 17 monitors the vicinity of the portion where the traveling yarn 20 is held (guided) by the tension applying unit 15, the yarn 20 in the monitoring portion is less likely to be shaken, and the yarn monitoring device. The accuracy with which 17 detects the defect of the yarn 20 can be further increased.

  The second blow-feed unit 41 is an air soccer device disposed at a position close to the yarn storage unit 18 on the upstream side of the yarn storage unit 18. The second blowing unit 41 blows off the yarn end on the yarn storage unit 18 side by blowing out compressed air, thereby forming an air flow that is sent to the second catching unit 12. Specifically, the second blow-feed section 41 includes a thin cylindrical guide member 42 capable of passing the yarn 20 therein, and a yarn guide member 43 that is a curved cylindrical member. Yes. An outlet for the yarn 20 is formed at one end of the guide member 42. The yarn guide member 43 is provided so as to be close to the air outlet of the second blowing part 41. Openings are formed at both ends of the yarn guide member 43 in the longitudinal direction.

  The yarn guide member 43 is arranged in a state in which the opening on one end side thereof is opposed to the air outlet of the second blowing section 41 and the opening on the other end side is opposed to the second catching section 12. A guide path is formed inside the yarn guide member 43. The guide path connects openings at both ends of the yarn guide member 43 so as to bypass the yarn monitoring device 17, the tension applying unit 15, the yarn joining device 13, and the like. The second blowing section 41, the yarn guide member 43, and the second catching portion 12 constitute a storage-side yarn end catching device 44.

  When the yarn 20 is split between the yarn supplying bobbin 21 and the yarn storage unit 18, the second blow-feed unit 41 captures the yarn 20 on the yarn storage unit 18 side and guides the yarn guide member 43. And the yarn 20 is pulled out along the guide path and is captured by the second capturing unit 12. Since the thread guide member 43 is formed with a slit (not shown) over the entire length, the thread 20 is pulled from the inside of the thread guide member 43 through the slit in a state where the thread 20 is captured by the second capturing portion 12. Can be put out. As described above, the yarn 20 on the yarn storage unit 18 side can be blown by the second blowing unit 41 and guided toward the yarn joining device 13 side.

  Each winder unit 2 includes a control unit (first control unit, second control unit) 25. The control unit 25 includes hardware such as an unillustrated CPU, ROM, and RAM. The RAM stores software such as a control program. The control unit 25 controls each configuration of the winder unit 2 in cooperation with hardware and software. The control unit 25 is configured to be able to communicate with the machine base control device 3. Thereby, the operation | movement of the several winder unit 2 with which the automatic winder 1 is provided can be managed centrally in the machine control apparatus 3. FIG. Specific processing executed by the control unit 25 will be described in detail in a processing flow at the start of winding described later.

  The winder unit 2 further includes a threading unit 60. The threading unit 60 is disposed at a position close to the yarn storage unit 18. The threading portion 60 is used at the start of winding of the yarn 20 around the yarn storage roller 32 described later.

  With reference to FIGS. 3 to 6, the yarn accumulating portion 18, the threading portion 60, and the second blow-feed portion 41 will be further described. As described above, the yarn storage unit 18 includes the yarn storage roller 32 and the roller drive motor 33.

  The yarn accumulating roller 32 is formed in a substantially cylindrical shape from metal, for example. The yarn accumulating roller 32 includes a cylindrical portion 34 and a diameter-expanding portion 35 that is provided continuously at both ends in the axial direction of the cylindrical portion 34 and increases in diameter toward the end side. An outer peripheral surface 32 a of the yarn accumulating roller 32 is configured by an outer peripheral surface 34 a of the cylindrical portion 34 and an outer peripheral surface 35 a of the enlarged diameter portion 35.

  As shown in FIG. 4, the yarn accumulating roller 32 is supported by a base member 33a. The base member 33a rotatably supports the yarn accumulating roller 32 and accommodates the roller driving motor 33. The yarn storage roller 32 rotates around the rotation axis R by the driving force of the roller drive motor 33, so that the yarn 20 drawn from the yarn supplying unit 6 is wound around the outer peripheral surface 34a and stored. Hereinafter, in the yarn accumulating roller 32, the side close to the roller drive motor 33 may be referred to as a base end side, and the opposite side may be referred to as a distal end side.

  As shown in FIG. 4, a magnet 36 a is embedded on the proximal end side of the yarn accumulating roller 32. A magnetic sensor 36b is provided inside the base member 33a. The magnetic sensor 36b is electrically connected to the control unit 25. Thereby, the control unit 25 detects whether or not the yarn accumulating roller 32 is located at a predetermined rotation position (an angular position around the rotation axis R) by detecting the magnet 36a.

  The yarn accumulating roller 32 applies a tension to the yarn 20 on the upstream side (yarn supplying bobbin 21 side) with respect to the yarn accumulating portion 18 by rotating forward in a state where the yarn 20 is wound. Thereby, the yarn 20 is unwound from the yarn supplying bobbin 21, and the yarn 20 is wound around the outer peripheral surface 32 a of the yarn accumulating roller 32. The yarn 20 is guided to the proximal end side of the yarn accumulating roller 32 by the guide member 42 of the second blow-feed section 41, and the outer periphery of the yarn accumulating roller 32 is pushed away from the proximal end side of the yarn accumulating roller 32 while pushing the layer of the yarn 20 on the distal end side. It winds around the surface 32a sequentially. As a result, the yarn 20 wound around the yarn accumulating roller 32 is pushed to the front end side by the newly wound yarn 20 and sequentially fed to the front end side. In this way, the yarn 20 is spirally aligned on the outer peripheral surface 32a of the yarn accumulating roller 32 and is regularly wound from the base end side.

  As shown in FIG. 3, the yarn 20 wound around the yarn accumulating roller 32 is drawn out downstream via a drawing guide 37 disposed on an extension line of the central axis (rotating axis R) of the yarn accumulating roller 32. . By providing the yarn accumulating portion 18, it is possible to suppress the fluctuation of the tension of the yarn 20 unwound from the yarn supplying bobbin 21 from being propagated to the winding portion 8 side. Thereby, the fluctuation | variation of the tension | tensile_strength of the thread | yarn 20 supplied to the winding part 8 can be suppressed, and the package 30 with sufficient quality can be formed.

  A ring member 46 is wound around (attached to) the outer peripheral surface 32 a of the yarn accumulating roller 32. The ring member 46 is formed in an annular shape from rubber, for example. The ring member 46 is attached to a boundary portion between the outer peripheral surface 34 a of the cylindrical portion 34 and the outer peripheral surface 35 a of the enlarged diameter portion 35 on the distal end side. The ring member 46 is a tension ring that surrounds the yarn 20 drawn out from the yarn accumulating roller 32 by the winding unit 8 and contacts the yarn 20 to provide resistance. The ring member 46 is attached to the outer peripheral surface 32a by an elastic force tightened inward in the radial direction. The ring member 46 imparts resistance to the yarn 20 drawn from the yarn accumulating roller 32 by the elastic force. An appropriate tension is applied to the yarn 20 drawn from the yarn storage roller 32 by the ring member 46, and the unwinding of the yarn 20 from the yarn storage roller 32 is stabilized.

  In the outer peripheral surface 32 a of the yarn accumulating roller 32, a recess 38 is provided in a region straddling the attachment position of the ring member 46 in the direction along the rotation axis R. That is, when viewed from the outside in the radial direction of the yarn accumulating roller 32, the recess 38 is provided so as to pass through the mounting position of the ring member 46 and intersects with the mounting position. overlapping. The concave portion 38 here constitutes a groove portion extending in the direction along the rotation axis R from one end to the other end of the yarn accumulating roller 32. The recess 38 includes a first portion 38 a formed on the outer peripheral surface 34 a of the cylindrical portion 34 and a second portion 38 b formed on the outer peripheral surface 35 a of the enlarged diameter portion 35. The concave portion 38 as the groove portion has, for example, the same cross-sectional shape in the longitudinal direction and is formed in a substantially rectangular cross section.

  That is, the outer peripheral surface 32a of the yarn storage roller 32 has a storage region R1 in which the yarn 20 is wound and stored, and a unwinding region R2 in which the ring member 46 is wound (FIG. 5). The unraveling region R2 here is a boundary portion between the outer peripheral surface 34a of the cylindrical portion 34 and the outer peripheral surface 35a of the enlarged-diameter portion 35 on the distal end side, and the storage region R1 is a solution on the outer peripheral surface 34a of the cylindrical portion 34. It is a part other than the heel region R2. The recess 38 is provided across the storage region R1 and the unwinding region R2. Moreover, the ring member 46 has elasticity and is configured to be able to expand its diameter. The circumferential length of the ring member 46 in a state where the diameter is not expanded is smaller than the circumferential length of the unraveling region R2. The ring member 46 is wound around the yarn accumulating roller in an expanded state.

  An in / out member 48 is provided in the recess 38. The in / out member 48 is disposed in a position corresponding to the mounting position of the ring member 46 in the recess 38 (a position on the inner side in the radial direction of the ring member 46). That is, as seen from the outside in the radial direction of the yarn accumulating roller 32, a part of the projecting and retracting member 48 overlaps with the attachment position of the ring member 46. As shown in FIG. 5 and FIG. 6, the projecting member 48 here is fixed to the bottom surface 39 of the recess 38 via a spring member 49. The spring member 49 is, for example, a coil spring.

  As shown in FIG. 5, the projecting and retracting member 48 forms a surface 51 along the outer peripheral surface 32 a of the yarn accumulating roller 32 in a normal state in which an external force other than the spring member 49 is not acting. The surface 51 is configured by a surface 51 a corresponding to the outer peripheral surface 34 a of the cylindrical portion 34 and a surface 51 b corresponding to the outer peripheral surface 35 a of the enlarged diameter portion 35. That is, the surface 51a is a peripheral surface having the same curvature as the outer peripheral surface 34a so as to be located on the same peripheral surface as the outer peripheral surface 34a when arranged along the outer peripheral surface 34a. Similarly, the surface 51b is a peripheral surface having the same curvature as the outer peripheral surface 35a so as to be located on the same peripheral surface as the outer peripheral surface 35a when arranged along the outer peripheral surface 35a. Further, as shown in FIG. 6, the retracting member 48 is pressed toward the bottom surface 39 side and the spring member 49 is contracted, so that the surface 51 can be immersed so as to enter the recess 38.

  The threading part 60 has a cylindrical nozzle 61. As shown in FIGS. 3 to 6, the nozzle 61 is provided with a slit 61 s along its longitudinal direction. One end portion 61a of the nozzle 61 forms a stepped (stepped) shape with a part protruding in the longitudinal direction. In other words, the one end portion 61a has a shape that is partially cut away in the circumferential direction. The notch is provided so as to be continuous with the slit 61s. In the one end part 61a here, the cross-sectional shape perpendicular to the longitudinal direction forms a semicircular arc.

The nozzle 61 is disposed such that one end 61 a faces the outer peripheral surface 35 a on the tip side of the yarn accumulating roller 32. As shown in FIG. 6, the nozzle 61 blows compressed air from the winding unit 8 side (tip side) in the recess 38 to the yarn feeding unit 6 side (base end side). Thereby, the nozzle 61 blows off the yarn end of the yarn 20 introduced into the other end portion 61 b from the one end portion 61 a and blows it into the second portion 38 b of the recess 38. Specifically, the nozzle 61 has a concave portion so that the first yarn end, which is the yarn end of the yarn 20 wound around the package 30, passes from the winding portion 8 side to the yarn supplying portion 6 side in the concave portion 38. 38 is blown into the second portion 38b.

  As shown in FIG. 3, the nozzle 61 is connected to a compressed air source 53 via a pipe, and an electromagnetic valve 54 is provided between the nozzle 61 and the compressed air source 53. The electromagnetic valve 54 is electrically connected to the control unit 25. When the electromagnetic valve 54 is opened, the compressed air supplied from the compressed air source 53 forms an air flow in the nozzle 61 from the other end 61b toward the one end 61a.

  The winder unit 2 further includes a threading section driving section 62 that moves the nozzle 61 in the direction indicated by the arrow A in FIG. The threading unit driving unit 62 is configured by a slide mechanism using an actuator such as an air cylinder or a motor, for example. The threading unit driving unit 62 is electrically connected to the control unit 25.

  The nozzle 61 is driven by the threading portion driving unit 62 so that the nozzle 61 has a first position where the one end 61a is separated from the outer peripheral surface 35a (the position shown in FIG. 5), and the one end 61a is more than the outer peripheral surface 35a. The yarn storage roller 32 moves between the second position (the position shown in FIG. 6) entering the rotation axis R side. As shown in FIGS. 5 and 6, the nozzle 61 is moved from the first position to the second position in a state where the yarn accumulating roller 32 is located at a predetermined rotational position (position where the projecting member 48 and the one end 61 a face each other). By moving to the position, the one end portion 61a presses the retracting member 48 toward the bottom surface 39 so as to be immersed in the recess 38. That is, the one end portion 61 a also functions as a pressing portion that presses the retracting member 48 to be immersed in the recess 38.

  The second blowing part 41 is disposed so that the suction port 42 a of the guide member 42 faces the outer peripheral surface 32 a of the yarn accumulating roller 32. As shown in FIG. 6, the second blowing section 41 captures the first thread end blown into the recess 38 by the threading section 60 by sucking from the suction port 42a, and the captured first thread end is captured. By blowing off from the blowout outlet toward the yarn guide member 43, the yarn is blown toward the yarn joining device 13.

  As shown in FIG. 3, the guide member 42 is connected to a compressed air source 53 via a pipe, and an electromagnetic valve 55 is provided between the guide member 42 and the compressed air source 52. The electromagnetic valve 55 is electrically connected to the control unit 25. When the electromagnetic valve 55 is opened, the compressed air supplied from the compressed air source 53 forms an air flow in the guide member 42 from the suction port 42a to the outlet.

  As shown in FIG. 4, an illumination unit 65 is provided in the vicinity of the threading unit 60 and the second blow-feed unit 41. The illumination unit 65 is, for example, an LED, and illuminates at least the periphery of the yarn storage roller 32 and the threading unit 60 when lit. The illumination unit 65 is electrically connected to the control unit 25.

  Next, a processing flow at the start of winding of the yarn 20 around the yarn accumulating roller 32 will be described with reference to FIG. In the winder unit 2 of the present embodiment, the yarn joining device 13 is provided between the yarn supply unit 6 and the yarn storage unit 18, and is not provided between the yarn storage unit 18 and the winding unit 8. In such a configuration, for example, when the yarn 20 is broken between the yarn storage unit 18 and the winding unit 8 during the yarn winding operation (when the upper yarn is broken), the yarn storage roller 32 to the yarn 20 After the yarn is removed, the yarn 20 pulled out from the package 30 and the yarn 20 on the yarn supplying unit 6 side are spliced by the yarn splicing device 13 and then wound around the yarn accumulating roller 32. Below, the operation | work at the time of the winding start of the thread | yarn 20 with respect to such a thread | yarn storage roller 32 (threading | working operation | work) is demonstrated.

  When the yarn 20 breaks between the yarn storage unit 18 and the winding unit 8 during the yarn winding operation, for example, unillustrated yarn monitoring provided between the yarn storage unit 18 and the winding unit 8 is performed. An abnormality is detected by a sensor (for example, a traverse sensor that monitors the traverse of the yarn 20). When an abnormality is detected by the yarn monitoring sensor, the control unit 25 stops the winding of the yarn 20 by the winder unit 2. Subsequently, the yarn 20 is cut by the cutter 16, and the yarn end (second yarn end) on the yarn supplying bobbin 21 side of the yarn 20 cut by the cutter 16 is sucked and caught by the first catching unit 14 (step). S1).

  Subsequently, the operator cuts the yarn 20 wound around the yarn accumulating roller 32 along the recess 38, and removes the yarn 20 from the yarn accumulating roller 32 (step S2). In the present embodiment, since the concave portion 38 is provided on the outer peripheral surface 32a of the yarn accumulating roller 32, the yarn 20 can be cut by causing scissors or the like to enter the concave portion 38, for example. Therefore, the removal of the yarn 20 from the yarn storage roller 32 is facilitated, and the outer peripheral surface 32a of the yarn storage roller 32 is prevented from being damaged by the blade.

  In step S2, when the winder unit 2 further includes a cutting device for cutting the yarn 20 wound around the yarn accumulating roller 32, the control unit 25 replaces the operator with cutting the yarn 20. The yarn 20 wound around the yarn accumulating roller 32 may be automatically cut and removed from the yarn accumulating roller 32 by controlling the cutting device. In this case, the following step S3 may be automatically executed following step S2.

  Subsequently, the operator operates an unillustrated switch. When receiving the operation of the switch, the control unit 25 rotates the yarn accumulating roller 32 by the roller driving motor 33 to a predetermined rotation position at which the threading unit 60 can blow the first yarn end into the recess 38 ( Step S3). More specifically, the yarn accumulating roller 32 is rotated to the rotational position where the magnetic sensor 36b detects the magnet 36a. As a result, as shown in FIGS. 4 to 6, the one end 61 a of the nozzle 61 faces the surface 51 b of the projecting member 48, and the suction port 42 a of the guide member 42 faces the recess 38.

  Subsequently, the control unit 25 causes the threading unit driving unit 62 to advance the nozzle 61 of the threading unit 60 from the first position to the second position so as to approach the thread storage roller 32, and the one-end portion 61a causes the retracting member 48. Is pressed to be immersed in the recess 38 (step S4). Subsequently, the control unit 25 opens the electromagnetic valve 54 to form an air flow from the other end 61b toward the one end 61a in the nozzle 61 of the threading unit 60 (step S5). Subsequently, the control unit 25 opens the electromagnetic valve 55 to form an air flow from the suction port 42a toward the blower outlet in the guide member 42 of the second blower feed unit 41 (step S6).

  Subsequently, the control unit 25 turns on the illumination unit 65 (step S7). Thereby, the periphery of the recess 38 and the nozzle 61 is illuminated. Note that the order of steps S4 to S7 may be changed as appropriate, and at least some of steps S4 to S7 may be performed simultaneously.

  Subsequently, the operator pulls out the yarn 20 from the package 30, and introduces the first yarn end, which is the yarn end of the drawn yarn 20, into the other end portion 61b of the nozzle 61 (step S8). In this embodiment, since the periphery of the recess 38 and the nozzle 61 is illuminated by the illumination unit 65, the work of introducing the first yarn end into the other end portion 61b is facilitated.

  When the first yarn end is introduced into the other end portion 61b in step S8, the first yarn end is blown into the recess 38 from the one end portion 61a of the nozzle 61 (step S9). Accordingly, the first yarn end passes from the winding unit 8 side in the recess 38 to the yarn supplying unit 6 side. The first yarn end that has passed to the yarn supplying section 6 in step S9 is sucked into the suction port 42a by the second blowing section 41 and captured (step S10).

  At this time, an air flow from the winding unit 8 side toward the yarn feeding unit 6 side is formed in the recess 38, and a force acts on the yarn 20 by the air flow, as shown by a broken line in FIG. The thread 20 comes out of the slit 61s of the nozzle 61. Here, in the present embodiment, the one end portion 61a of the nozzle 61 forms a step shape, and the end portion 61a is in the end portion 61a, so that the one end portion 61a is in contact with the projecting member 48. However, the thread 20 is easily pulled out from the slit 61s. Thereby, it can suppress that the thread | yarn 20 flutters within the slit 61s, and becomes entangled with the ring member 46.

  In step S8, when the winder unit 2 further includes an introduction device for introducing the first yarn end into the other end portion 61b, the control unit 25 replaces the operator with introducing the first yarn end. However, the first yarn end may be automatically introduced into the other end portion 61b by controlling the introduction device.

  Subsequently, when the operator visually confirms that the first yarn end is captured by the second blowing unit 41 and the first yarn end is captured by the second blowing unit 41, the illustration is omitted. Operate the switch again. Upon accepting the operation of the switch, the control unit 25 rotates the traverse drum 24 in the reverse direction to the time of winding the yarn and pulls the yarn 20 out of the package 30, while the second blow-feed unit 41 causes the first yarn end to be moved to the yarn. It blows to the connecting device 13 side (step S11). Note that visual confirmation and switch operation by the operator may be omitted, and step S11 may be automatically executed following step S10.

  Subsequently, the control unit 25 causes the yarn splicing device 13 to splice the first yarn end and the second yarn end (step S12). Before executing the process of step S12, the control unit 25 closes the electromagnetic valve 54, shuts off the supply of compressed air to the nozzle 61, closes the electromagnetic valve 55, and compresses the guide member 42. Turn off the air supply.

  Thereafter, the control unit 25 causes the threading unit driving unit 62 to retract the nozzle 61 from the second position to the first position so as to be separated from the yarn accumulating roller 32, and to rotate the yarn accumulating roller 32 in the forward direction to rotate the yarn accumulating roller 32. Storage of the yarn 20 in the thread is started. Then, the winding of the yarn 20 by the winder unit 2 is resumed.

  As described above, in the winder unit 2, the concave portion 38 is provided in the region straddling the attachment position of the ring member 46 in the direction along the rotation axis R on the outer peripheral surface 32 a of the yarn accumulating roller 32. For this reason, by passing the yarn end from one side (front end side) in the direction along the rotation axis R in the recess 38 to the other side (base end side), the yarn end can be easily passed radially inward of the ring member 46. be able to. Therefore, it is possible to simplify the operation at the start of winding the yarn 20 around the yarn storage roller 32.

  In the winder unit 2, since the recess 38 forms a groove extending in the direction along the rotation axis R, it is easy to pass the yarn end radially inward of the ring member 46, and the winding of the yarn 20 around the yarn accumulating roller 32 is started. Time work can be further simplified.

  In the winder unit 2, a surface 51 along the outer peripheral surface 32 a of the yarn accumulating roller 32 is formed at a position corresponding to the mounting position of the ring member 46 in the recess 38, and the surface 51 is immersed so as to enter the recess 38. A possible in / out member 48 is provided. For this reason, since the surface 51 along the outer peripheral surface 32a of the yarn accumulating roller 32 is formed by the retracting member 48 at the time of winding the yarn, the tension applied by the ring member 46 to the yarn 20 drawn from the yarn accumulating roller 32 is increased. Uniform in the circumferential direction. Further, since the retractable member 48 can be retracted so that the surface 51 enters the recess 38, the retractable member 48 is retracted at the start of winding of the yarn 20 around the yarn storage roller 32. The yarn end can be easily passed through the inner side in the radial direction of the ring member 46 through the recess 38.

  In the winder unit 2, the outer peripheral surface 32a of the yarn storage roller 32 has a storage region R1 in which the yarn 20 is wound and stored, and an unwinding region R2 in which the ring member 46 is wound. It is provided over the region R1 and the unraveling region R2. Therefore, the yarn end can be guided to the upstream side of the yarn accumulating roller 32 by passing the yarn end through the recess 38. Thereby, the operation | work at the time of the winding start of the thread | yarn 20 with respect to the thread | yarn storage roller 32 can be simplified further.

  In the winder unit 2, the ring member 46 is configured to be elastic and expandable in diameter, and the circumferential length of the ring member 46 in a state where the diameter is not expanded is smaller than the circumferential length of the unwinding region R2. ing. The ring member 46 is wound around the yarn accumulating roller 32 in an expanded state. Thereby, a predetermined tension can be applied to the yarn 20 to be unwound.

  The winder unit 2 further includes a threading unit 60 that blows air from the winding unit 8 side to the yarn feeding unit 6 side in the recess 38. For this reason, the yarn end can be blown into the concave portion 38 by blowing air into the concave portion 38 by the yarn threading portion 60, and the yarn end can be passed radially inward of the ring member 46. Thereby, the operation | work at the time of the winding start of the thread | yarn 20 with respect to the thread | yarn storage roller 32 can be simplified further.

  In the winder unit 2, the threading portion 60 has one end portion 61 a of the nozzle 61 as a pressing portion that presses the protruding and retracting member 48 when the air is blown into the concave portion 38 to be immersed in the concave portion 38. For this reason, for example, it is not necessary for the operator to manually press the retracting member 48 into the recess 38, and the work at the start of winding the yarn 20 around the yarn storage roller 32 can be further simplified.

  In the winder unit 2, the control unit 25 rotates the yarn accumulating roller 32 by the roller drive motor 33 to the rotation position at which the threading unit 60 can blow air into the recess 38 (step S <b> 3), and drives the threading unit. The threading portion 60 is moved closer to the yarn accumulating roller 32 by the portion 62, the projecting member 48 is pressed by the one end portion 61a of the nozzle 61 to be immersed in the recess 38 (step S4), and the air is recessed by the threading portion 60. (Step S9). In this manner, the operation of passing the first thread end radially inward of the ring member 46 can be automated by cooperating the threading part 60, the roller driving motor (roller driving part) 33, and the threading part driving part 62. . Therefore, the operation at the start of winding of the yarn around the yarn accumulating roller 32 can be further simplified.

  In the winder unit 2, when the threading unit 60 blows the first yarn end into the recess 38, the control unit 25 causes the second blowing unit 41 to capture and send the first yarn end (step S10, S11) The yarn joining device 13 joins the first yarn end and the second yarn end which is the yarn end of the yarn 20 on the yarn supplying section 6 side (step S12). As described above, the yarn joining device 13 and the second blow feed unit 41 cooperate to automate the work of joining the blown first yarn end and the second yarn end. Therefore, the work at the start of winding of the yarn 20 around the yarn accumulating roller 32 can be further simplified.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to the said embodiment.

  In the above embodiment, the case where the yarn 20 is broken between the yarn storage unit 18 and the winding unit 8 during the yarn winding operation has been described as an example. However, when the type of the yarn 20 is changed (device) It can also be applied to (when changing). That is, at the time of changing, the yarn 20 is not wound around the package 30 at all, and the yarn 20 is not wound around the yarn accumulating roller 32 at all. From this state, for example, the operator directly winds the yarn 20 from the yarn feeding bobbin 21 around the package 30 for several turns, and then cuts the yarn 20 between the package 30 and the yarn feeding bobbin 21. Next, by performing the processing of steps S3 to S12, the yarn joining device 13 causes the first yarn end that is the yarn end of the yarn 20 on the package 30 side and the yarn end of the yarn 20 on the yarn supply unit 6 side to be the first yarn end. Two yarn ends can be spliced together. In this case, the second yarn end is operated in parallel with the processing of steps S3 to S12 as the auxiliary blowing unit 28, the first blowing unit 11, the first capturing unit 14, and the like operate in conjunction with each other. Or by the first capturing unit 14 before the processing.

  In the above-described embodiment, instead of the second blow feed unit 41, a movable yarn feed unit that feeds by moving to the second catching unit 12 in a state where the first yarn end is nipped (pinched) may be provided. .

  In the said embodiment, you may comprise so that supply of the new yarn supply bobbin 21 may be received not only from the structure which makes the yarn supply part 6 a tray conveyance type but from a magazine type bobbin supply apparatus. In this configuration, when the bobbin supplying device supplies a new yarn supplying bobbin 21 to the yarn supplying unit 6, the bobbin supplying device draws the yarn end from the yarn supplying bobbin 21 and delivers it to the upstream yarn blowing feed unit 11. It may be. In this case, the auxiliary blowing part 28 can be omitted.

  In the above embodiment, the traverse of the yarn 20 by the traverse drum 24 is shown as an example of the winding unit 8, but is not limited to this. As a traversing method of the yarn 20, an arm type or belt type traverse mechanism may be employed. In the above embodiment, the cheese-shaped package 30 may be wound, or the cone-shaped package 30 may be wound. 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.

  In the above embodiment, the concave portion 38 constitutes a groove portion extending in the direction along the rotation axis R from one end to the other end of the yarn accumulating roller 32. However, the recess 38 may extend in a direction intersecting the rotation axis R. The storage roller 32 may be provided at an intermediate portion. The recess 38 may be provided in a circular area or the like on the outer peripheral surface 32 a of the yarn accumulating roller 32. In short, it suffices if it is provided in a region straddling the attachment position of the ring member 46 in the direction along the rotation axis R.

  In the above embodiment, the retracting member 48 is fixed to the bottom surface 39 of the recess 38 via the spring member 49, so that the surface 51 can be immersed so as to enter the recess 38. The surface 51 may be immersable so as to enter the recess 38. For example, the in / out member 48 may be formed of an elastic material.

  In the above-described embodiment, the retracting member 48 is pressed by the one end portion 61 a of the nozzle 61 to be immersed in the recess 38. However, for example, another configuration for pressing the retracting member 48 to be immersed in the recess 38 is provided. Alternatively, the projecting / retracting member 48 may be immersed in the recess 38 by the operator pressing it with a hand.

  In the above embodiment, the threading portion 60 may not be provided. In this case, for example, when the operator manually passes the first thread end into the recess 38, the threading portion 60 is provided on the radially inner side of the ring member 46. One thread end may be passed. Even in this case, since the recess 38 is provided, the first yarn end can be easily passed through the inner side in the radial direction of the ring member 46 as compared with the conventional configuration. Further, the protrusion / retraction member 48 may not be provided.

  In the above embodiment, the case where the yarn end is passed from the distal end side to the proximal end side of the yarn accumulating roller 32 has been described as an example. However, depending on the configuration of the winder unit 2, the yarn end may be the proximal end side of the yarn accumulating roller 32. In some cases, it may be required to pass through to the tip side. According to the present invention, even in such a case, the yarn end can be easily passed radially inward of the ring member 46 by passing from the proximal end side to the distal end side of the yarn accumulating roller 32 in the recess 38. .

  DESCRIPTION OF SYMBOLS 2 ... Winder unit (yarn winding device), 6 ... Yarn supply unit, 8 ... Winding unit, 13 ... Yarn splicing device, 18 ... Yarn storage unit, 20 ... Yarn, 25 ... Control unit (first control unit, second control unit) Control unit), 30 ... package, 32 ... yarn accumulating roller, 32a ... outer peripheral surface, 33 ... roller drive motor (roller drive unit), 38 ... recess, 41 ... second blow feed unit (yarn feed unit), 46 ... ring 48, projecting member, 51 ... surface, 60 ... threading part, 61a ... one end (pressing part), 62 ... threading part driving part, R ... rotating shaft, R1 ... storage area, R2 ... unwinding area.

Claims (10)

A yarn supplying section capable of supplying yarn;
A yarn storage unit that draws and stores the yarn from the yarn supply unit;
A winding unit that winds up the yarn stored in the yarn storage unit and forms a package, and
The yarn storage section is
A yarn accumulating roller for winding and accumulating the yarn pulled out from the yarn supplying unit by rotating around the rotation axis;
A ring member wound around the outer peripheral surface of the yarn accumulating roller, contacting the yarn drawn from the yarn accumulating roller by the winding unit, and imparting resistance to the yarn;
The yarn winding device, wherein a recess is provided in a region straddling the attachment position of the ring member in a direction along the rotation axis on the outer peripheral surface of the yarn accumulating roller.   The yarn winding device according to claim 1, wherein the recess constitutes a groove extending in a direction along the rotation axis.   In the recess, at a position corresponding to the mounting position of the ring member, there is a retractable member that forms a surface along the outer peripheral surface of the yarn accumulating roller and that can be immersed so that the surface enters the recess. The yarn winding device according to claim 1 or 2, which is provided. The outer peripheral surface of the yarn storage roller has a storage region where the yarn is wound and stored, and an unwinding region where the ring member is wound,
The yarn winding device according to any one of claims 1 to 3, wherein the concave portion is provided across the storage region and the unwinding region. The ring member is configured to be elastic and expandable in diameter,
The circumferential length of the ring member in a state where the diameter is not expanded is smaller than the circumferential length of the unwinding region,
The yarn winding device according to claim 4, wherein the ring member is wound around the yarn accumulating roller in an expanded state.   The yarn winding device according to any one of claims 1 to 5, further comprising a threading unit that blows air from the winding unit side to the yarn supplying unit side in the recess. In the recess, at a position corresponding to the mounting position of the ring member, there is a retractable member that forms a surface along the outer peripheral surface of the yarn accumulating roller and that can be immersed so that the surface enters the recess. Provided,
The yarn winding device according to claim 6, wherein the threading portion includes a pressing portion that presses the protruding and retracting member to be immersed in the recess when the air is blown into the recess. A roller driving section for rotating the yarn accumulating roller;
A threading section drive section for moving the threading section forward and backward with respect to the thread accumulating roller;
A first control unit that controls operations of the threading unit, the roller driving unit, and the threading unit driving unit,
The first controller is
The thread storage roller is rotated by the roller driving unit until the threading unit can rotate the air into the recess.
The threading part drive unit causes the threading part to approach the yarn accumulating roller, and the pressing part is pressed by the pressing unit to be immersed in the recess.
The yarn winding device according to claim 7, wherein the air is blown into the concave portion by the threading portion. The threading portion blows the first yarn end, which is a yarn end of the yarn wound around the package, into the recess by blowing the air into the recess.
A yarn splicing device for splicing the split yarn;
A yarn feed section that captures the first yarn end blown into the recess by the threading portion, and sends the captured first yarn end to the yarn joining device;
A second control unit that controls operations of the yarn joining device and the yarn feeding unit,
The second controller is
When the threading portion blows the first yarn end into the recess, the yarn feeding portion captures the first yarn end and sends it to the yarn joining device side,
The yarn winding device according to any one of claims 6 to 8, wherein the yarn joining device joins the first yarn end and a second yarn end, which is a yarn end of the yarn on the yarn supplying section side.   The yarn winding device according to any one of claims 1 to 9, wherein a yarn feeding bobbin is supported by the yarn feeding unit.

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