CN117842776A - Yarn winding device - Google Patents

Abstract

The present invention relates to a yarn winding device. The winder unit (2) is provided with: the yarn feeding device comprises a yarn feeding part (6) for feeding a yarn (Y), a yarn accumulating device (40) for accumulating the yarn, a package forming part (8) for winding the yarn and forming a package (30), a joint device (14) for jointing the yarn on the yarn feeding part (6) side and the yarn accumulating device (40) side, and a yarn guiding part (7) for guiding the yarn between the yarn accumulating device and the joint device. The yarn guide section (7) has: the yarn feeding device comprises a yarn ejection part (60) for ejecting the yarn to the side of a yarn feeding part (6), a catching device (13) for catching the yarn ejected by the yarn ejection part, a yarn guide tube (80) for guiding the yarn ejected from the yarn ejection part to the catching device, and a limiting rod (95) for limiting the yarn pulled from the yarn guide tube to be guided to a yarn winding position. The winder unit appropriately guides the yarn to the yarn winding position.

Description

Yarn winding device

Technical Field

The present invention relates to a yarn winding device.

Background

Conventionally, it is known to provide: a yarn feeding section for supporting a yarn feeding bobbin; a yarn accumulating device for unwinding the yarn from the yarn feeding bobbin supported by the yarn feeding section and winding the unwound yarn; a yarn joining device for joining the yarn end of the yarn on the yarn feeding bobbin side and the yarn end of the yarn on the yarn accumulating device side; a yarn winding device winds a yarn to form a yarn winding portion of a package. In this yarn winding device, a drawing-out portion (air suction device) is provided, and when the yarn is in a disconnected state between the bobbin and the yarn accumulating device, the yarn is caught by the yarn accumulating device and blown onto a yarn guide path, and the yarn is drawn out along the yarn guide path and caught by the catching portion (for example, refer to JP 2016-050053A).

After the yarn pulled out by the pulling-out portion is caught by the catching portion, the yarn moves from the yarn guide path toward the yarn splicing device. The yarn moved toward the yarn splicing device is guided to other devices such as the yarn splicing device and a yarn monitoring device for detecting a yarn defect. That is, the yarn moved toward the yarn splicing device is guided to a position (yarn winding position) where the yarn can be wound.

In the conventional device, the yarn may be guided to a position where the yarn can be wound up during the process of being pulled out by the pulling-out portion. At this time, the yarn guided to the yarn monitoring device is moved in a direction opposite to the moving direction (winding direction) of the yarn determined by the yarn monitoring device during the drawing by the drawing unit. Since the yarn guide mechanism of the yarn monitoring device is not designed to move in a different direction opposite to the determined direction of movement of the yarn, a pull-up of the yarn may occur. The yarn block produced by this pulling may move toward the yarn accumulating device when the yarn after the yarn splicing is wound.

Disclosure of Invention

The purpose of the present invention is to properly guide a yarn to a yarn winding position.

Hereinafter, a plurality of embodiments will be described as means for solving the problems. These embodiments can be arbitrarily combined as needed.

The yarn winding device according to an embodiment of the present invention includes a supply unit, a yarn accumulating device, a winding unit, a yarn splicing device, and a yarn guiding unit. The supply unit supplies yarn. The yarn accumulating device accumulates the yarn supplied from the supply unit. The winding unit winds the yarn stored in the yarn storage device to form a package. The yarn joining device joins the yarn on the supply unit side to the yarn accumulating device side when the yarn is disconnected between the supply unit and the yarn accumulating device. The yarn guide portion guides the yarn between the yarn accumulating device and the yarn splicing device.

The yarn guide portion includes a yarn ejection portion, a yarn catching portion, a yarn guide tube, and a regulating lever. The yarn ejecting section pulls out the yarn stored in the yarn storage device and ejects the yarn to the supply section side. The yarn catching section is disposed between the yarn splicing device and the supply section, and catches the yarn ejected from the yarn ejecting section. The yarn guide tube is provided between the yarn ejecting section and the yarn catching section, and guides the yarn ejected from the yarn ejecting section to the yarn catching section. The regulating lever temporarily regulates the yarn catch section to guide the yarn pulled out from the yarn guide tube to the yarn winding position when winding the yarn.

In the yarn winding device, the yarn pulled out from the yarn guide tube is temporarily not guided by the regulating lever to a position (yarn winding position) when the yarn is wound by the yarn catching portion. Thus, the yarn pulled out from the yarn guide bobbin is not guided to the yarn winding position (for example, a yarn monitoring device) at an improper timing. That is, the yarn can be guided to the yarn winding position at the time when the yarn is pulled out by the pulling-out section.

The yarn winding device may further include a moving unit. The movement unit moves the restricting lever between a restricting position at which the restricting yarn is guided to the yarn winding position by the yarn catching unit and an introducing position at which the yarn can be guided to the yarn winding position. This makes it possible to switch the regulating lever between a state in which the yarn is regulated to be introduced into the yarn winding position by the yarn catching section and a state in which the yarn is guided into the yarn winding position.

In the yarn winding device, the moving unit may move the yarn ejecting unit between a yarn guiding position at which the yarn supplied from the supplying unit is guided to the yarn accumulating device and a yarn drawing position at which the yarn accumulated in the yarn accumulating device is drawn out and ejected to the supplying unit side. Thus, the movement of the restriction lever and the movement of the yarn ejection portion can be performed simultaneously by the movement portion.

In the yarn winding device, the yarn guide tube may be detachable from the yarn guide portion. Thereby, maintenance of the yarn winding device is facilitated.

In the yarn winding device, the yarn guide tube may have an inlet portion and a curved portion. The inlet portion sucks the yarn discharged from the yarn discharge portion toward the inner guide path. The bending portion changes the moving direction of the yarn attracted to the guide path. In this case, the cross-sectional area of the guide path of the yarn guide bobbin from the bending portion to the yarn catching portion may be larger than the cross-sectional area of the guide path from the inlet portion to the bending portion. Thus, the yarn is not pulled out from the middle of the yarn guide tube.

In the yarn winding device, the yarn guide tube may have a flat side surface. This can improve the visibility of the yarn winding device.

In the yarn winding device, the yarn guide tube may have a slit for guiding the yarn guided by the yarn catching portion to the yarn winding position from the inner guide path to the yarn catching portion side; and a fin which stands up from the slit. This can prevent the yarn from being guided away from the yarn winding position.

In the yarn winding device, the yarn guide tube may have a slit through which the yarn guided from the inner guide path to the yarn catching portion side by the yarn catching portion can be led out. In this case, the slit may be parallel to the extending direction of the yarn guide tube. Thereby, the yarn guide tube is easily manufactured.

In the yarn winding device, the supply unit may supply the yarn unwound from the yarn feeding bobbin. In this way, in the automatic winder having the yarn accumulating device, the yarn can be guided to the yarn winding position appropriately.

In the yarn winding device, the supply unit may supply the yarn spun by the force of air. In this way, in the air spinning machine having the yarn accumulating device, the yarn can be properly guided to the yarn winding position.

In the yarn winding device, the supply unit may supply the yarn spun by the rotational force of the rotor. In this way, in the open-end spinning machine having the yarn accumulating device, the yarn can be guided to the yarn winding position appropriately.

The yarn can be properly guided to the yarn winding position.

Drawings

Fig. 1 is a diagram showing a structure of an automatic winder.

Fig. 2 is a diagram showing a structure of a winder unit.

Fig. 3 is an enlarged view of the yarn accumulating device.

Fig. 4A is a diagram showing a relationship between the yarn accumulating device and the detecting section.

Fig. 4B is a diagram showing a relationship between the yarn accumulating device and the light emitting section.

Fig. 4C is a diagram showing the arrangement relationship between the yarn accumulating device and the detecting unit.

Fig. 5 is a diagram showing a detailed structure of the moving part.

Fig. 6 is a diagram showing a state in which the first arm rotates with rotation of the cam.

Fig. 7 is a view showing the overall structure of the yarn guide bobbin.

Fig. 8 is a front view of the tubular member.

Fig. 9 is a side view of the tubular member.

Fig. 10 is a flowchart showing a package forming operation of the winder unit.

Fig. 11 is a view showing a state in which the yarn is arranged at the yarn winding position.

Fig. 12 is a view showing a state in which the yarn is restricted from moving by the restricting lever.

Description of the reference numerals

1: an automatic winder; 2: a winder unit; 3: a body control device; 4: yarn feeding tube supply device; 5: doffing device; 6: a yarn feeding section; 7: a yarn guiding part; 7a: a mounting part; 8: a package forming section; 10: an unwinding assisting device; 11: a lower yarn detector; 12: a tension applying section; 13: a capturing device; 13A: a first capturing section; 13B: a second capturing section; 14: a joint device; 15: a cutter; 16: yarn monitoring means; 19: a housing; 21: yarn feeding tubes; 22: coiling a bobbin; 23: a cradle; 24: traversing the drum; 25: a control unit; 26: a transport tray; 27: a movable member; 28: an auxiliary blowing section; 30: packaging; 37: pulling out the guide; 40: a yarn accumulating device; 41: a accumulating roller; 41a: a cone portion; 41b: a cone portion; 41c: a cylindrical portion; 41d: an outer peripheral surface; 41e: an end portion; 41f: an end portion; 41g: an inner peripheral surface; 42: a ring member; 43a: a first concave portion; 45: a drive motor; 47: a cover; 47a: an opposing face; 50: a detection unit; 51: a frame; 53: a detection unit; 53A: a line sensor; 53B: a lens; 55: a light emitting section; 55A: an LED substrate; 55B: a light source; 55C: an optical waveguide; 60: a yarn ejection section; 70: a waxing device; 80: yarn guiding tube; 81: a tubular member; 81a: a first bending portion; 81b: a second bending portion; 81c: an area enlarging portion; 82: drawing out the narrow slit; 83: a fin; 84: a rotation fixing member; 85: a snap-fit member; 86: a protruding member; 90: a moving part; 91: a cam; 91A: a first pulley; 91B: a belt; 91C: a second pulley; 91D: a motor; 92: a first arm; 93: a second arm; 94: a position sensor; 95: a restraining bar; a: a deposit area; a1: a first shaft; a2: a second shaft; c1: a rotation shaft; CH: a frame; h: a hole; IN: an inlet portion; l1: a first straight line; l2: a second straight line; o: an origin; OUT: an outlet; PH: a side surface; PH1: a first peripheral position; SL: yarn guiding narrow slits; ST1: a straight line section; y: a yarn; θ: irradiation angle.

Detailed Description

1. First embodiment

(1) Automatic winder

Hereinafter, the first embodiment will be described in detail. In the description of the drawings, the same or corresponding components are denoted by the same reference numerals, and repetitive description thereof will be omitted. "upstream" and "downstream" are upstream and downstream, respectively, of the direction of travel of the yarn.

The automatic winder 1 will be described with reference to fig. 1. Fig. 1 is a diagram showing a structure of an automatic winder 1. The automatic winder 1 includes a plurality of winder units 2 (an example of a yarn winding device), a body control device 3, a yarn feeding bobbin supply device 4, and a doffing device 5, which are arranged in an aligned manner. The automatic winder 1 is provided with a blower box.

The winder unit 2 winds the yarn Y around the winding bobbin 22 to form a package 30. The winder unit 2 unwinds the yarn Y of the yarn feeding bobbin 21, temporarily stores the unwound yarn Y in the yarn storage device 40, and then pulls out and winds the yarn Y stored in the yarn storage device 40 around the winding bobbin 22 to form the package 30.

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

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

When the package 30 is fully wound (a state in which a predetermined amount of yarn Y is wound) in the winder unit 2, the doffer 5 moves to the position of the winder unit 2, and removes the fully wound package 30. The doffer 5 is provided with a winding bobbin 22 for winding the yarn Y on the winder unit 2 from which the package 30 is removed.

(2) Winder unit

(2-1) brief structure of winder unit

The following describes the structure of the winder unit 2. First, a brief configuration of the winder unit 2 will be described with reference to fig. 2. Fig. 2 is a diagram showing the structure of the winder unit 2. The winder unit 2 includes a yarn supply unit 6 (an example of a supply unit), a yarn accumulating device 40, a yarn guide unit 7, and a package forming unit 8 (an example of a winding unit), and a control unit 25.

The yarn feeding section 6 is configured to support the yarn feeding bobbin 21 placed on the conveying tray 26 at a predetermined position, and unwind the yarn Y from the yarn feeding bobbin 21. When all the yarns Y are unwound from the yarn feeding bobbin 21, the yarn feeding section 6 discharges the core tube of the yarn feeding bobbin 21 around which the yarns Y are not wound, and receives a new yarn feeding bobbin 21 from the yarn feeding bobbin feeding device 4.

The yarn accumulating device 40 is disposed in the middle of the yarn travel path formed between the yarn feeding section 6 and the package forming section 8. The yarn accumulating device 40 is provided at a position upstream of the waxing device 70 in the traveling direction of the yarn Y. The yarn accumulating device 40 temporarily accumulates the yarn Y unwound by the yarn supplying section 6 while winding the yarn Y. The yarn accumulating device 40 supplies the accumulated yarn Y to the package forming section 8.

The yarn guide 7 is disposed between the yarn feeding unit 6 and the yarn accumulating device 40, and guides the yarn Y fed from the yarn feeding unit 6 between the yarn feeding unit 6 and the yarn accumulating device 40. In the yarn guide 7, when the yarn Y is disconnected between the yarn feeder 6 and the yarn accumulating device 40, the terminal end portion of the yarn Y existing on the yarn feeder 6 side and the terminal end portion of the yarn Y existing on the yarn accumulating device 40 side are joined.

The package forming section 8 winds the yarn Y supplied from the yarn accumulating device 40 around the winding bobbin 22 to form the package 30. The package forming section 8 has a cradle 23 and a traverse drum 24. The cradle 23 rotatably supports the winding bobbin 22 (or the package 30). Cradle 23 is configured to be capable of bringing the outer peripheral surface of supported package 30 into contact with the outer peripheral surface of traverse drum 24.

The traverse drum 24 traverses the yarn Y and drives the winding bobbin 22. Specifically, the traverse drum 24 is rotationally driven by a driving source (e.g., an electric motor or the like) to rotate in contact with the outer peripheral surface of the winding bobbin 22 or the package 30, thereby rotating the winding bobbin 22. Thereby, the yarn Y stored in the yarn storage device 40 can be unwound and pulled out, and wound around the winding bobbin 22.

A traverse groove (not shown) is formed in the outer peripheral surface of the traverse drum 24, and the yarn Y can be traversed (traversed) at a predetermined width by the traverse groove. In the above configuration, the yarn Y can be wound around the winding bobbin 22 while traversing, and the package 30 having a predetermined shape can be formed.

The control unit 25 is a computer system including hardware such as a CPU, a storage device (ROM, RAM, etc.), and various interfaces. The storage device stores software such as a control program. The control unit 25 controls each structure of the winder unit 2 by combining hardware and software. The control unit 25 is configured to be able to communicate with the body control device 3. This makes it possible to collectively manage the operations of the plurality of winder units 2 included in the automatic winder 1 in the body control device 3.

The winder unit 2 has a waxing device 70. The waxing device 70 is disposed between the yarn accumulating device 40 and the package forming section 8. The waxing device 70 waxes the yarn Y traveling from the yarn accumulating device 40 toward the package forming section 8.

(2-2) yarn accumulating apparatus

Next, the detailed structure of the winder unit 2 will be described. First, the detailed structure of the yarn accumulating device 40 will be described with reference to fig. 2 and 3. Fig. 3 is an enlarged view of the yarn accumulating device 40. The yarn accumulating device 40 includes an accumulating roller 41 capable of winding the yarn Y, a drive motor 45 for rotationally driving the accumulating roller 41, a cover 47, and a detecting unit 50. The accumulating roller 41 winds the yarn Y around the accumulating area a of the outer peripheral surface 41d of the accumulating roller 41, and temporarily accumulates the yarn Y. The accumulating roller 41 is supported by a machine body (frame) of the automatic winder 1 so as to be rotatable about a rotation axis C1 slightly inclined with respect to the horizontal direction. As shown in fig. 2 and 3, tapered portions 41a and 41b having a larger diameter as they approach the end portions are formed on both end portions in the axial direction of the accumulating roller 41. The portion between the two tapered portions 41a and 41b is a cylindrical portion 41c having a constant diameter, and the outer peripheral surface 41d thereof is a storage area a around which the yarn Y is wound. The outer peripheral surface 41d of the cylindrical portion 41c is mirror finished. The yarn Y wound around the cylindrical portion 41c is prevented from coming off by the two tapered portions 41a and 41b on both end sides.

A ring member 42 is wound around the outer peripheral surface 41d of the cylindrical portion 41c of the accumulating roller 41. The ring member 42 is formed of rubber, for example, in an annular shape. The ring member 42 is attached to a boundary portion between the cylindrical portion 41c and the tapered portion 41b on the tip end side. The ring member 42 surrounds the yarn Y pulled out from the accumulating roller 41 by the package forming section 8, and contacts the yarn Y to apply resistance. The ring member 42 is attached to the cylindrical portion 41c by an elastic force that tightens radially inward thereof. The ring member 42 applies a resistance to the yarn Y pulled out from the accumulating roller 41 by the elastic force. The yarn Y pulled out from the accumulating roller 41 is appropriately tensioned by the ring member 42, and unwinding of the yarn Y from the accumulating roller 41 is stabilized.

A first recess (concave portion) 43a is provided in an area of the outer peripheral surface 41d of the accumulating roller 41 that spans the attachment position of the ring member 42 in the direction of the rotation axis C1. That is, the first concave portion 43a is provided so as to pass through and intersect with the mounting position of the ring member 42 when viewed from the radially outer side of the accumulating roller 41, and a part of the first concave portion 43a overlaps with the mounting position. The first concave portion 43a here constitutes a groove portion extending from one end to the other end of the accumulating roller 41 in the direction along the rotation axis C1. The first concave portion 43a has, for example, the same cross-sectional shape in the longitudinal direction thereof, and is formed to have a substantially rectangular cross-section. A second concave portion (concave portion) 43b is also provided on the outer peripheral surface 41d of the accumulating roller 41. The second recess (recess) 43b is a recess (so-called "hollow") provided so as not to form a recess (so-called "dent") when the sensor magnet is embedded in the boss of the inner peripheral surface 41g of the cylindrical portion 41c or the reinforcing rib is molded.

The drive motor 45 rotates the accumulating roller 41 in the direction of winding the yarn Y from the yarn feeding section 6. The storage roller 41 can be rotated in a direction opposite to the winding direction by the drive motor 45. The driving motor 45 is a motor capable of controlling the position, such as a DC brushless motor, a stepping motor, or a servo motor.

The yarn Y wound around the accumulating roller 41 is pulled out from the tapered portion 41b on the other end side (upstream side of the accumulating roller 41) of the accumulating roller 41, and is conveyed to the downstream side (package forming section 8 side). In the tapered portion 41b, the yarn Y on the accumulating roller 41 is pulled out to the downstream side via the pull-out guide 37 positioned on the extension of the rotation axis C1 of the accumulating roller 41. The yarn Y wound around the accumulating roller 41 passes between the ring member 42 and is unwound, and thereby, a proper tension is applied to the unwound yarn Y.

The detection unit 50 is disposed near the outer peripheral surface 41d of the cylindrical portion 41c of the accumulating roller 41. For example, the detection unit 50 can detect that the yarn Y of the accumulating roller 41 is equal to or greater than a predetermined upper limit amount and smaller than a predetermined lower limit amount. The detection unit 50 may use the upper limit to the lower limit as the detection range. The detection range may be set to a wider range including a range from a portion exceeding the upper limit amount to a portion lower than the lower limit amount. Thus, for example, an excessive amount with respect to the upper limit value can be detected. In the present embodiment, the yarn Y of the accumulating roller 41 can be detected from the detection range to be equal to or greater than the predetermined upper limit amount or to be less than the predetermined lower limit amount. The above and below can be appropriately exceeded or undershot. The detection result of the detection unit 50 is obtained by the control unit 25. The control section 25 controls the drive motor 45 so that the accumulation amount (winding amount) of the accumulation roller 41 falls between the upper limit amount and the lower limit amount based on the detection result of the detection unit 50.

The detecting unit 50 detects the yarn Y wound around the outer peripheral surface 41d of the accumulating roller 41. As shown in fig. 4A to 4C, the detection unit 50 includes a detection portion 53 together with a light emitting portion 55 that emits light toward the accumulating roller 41. That is, the detection unit 50 includes a detection unit 53 and a light emitting unit 55. The detection unit 53 and the light emitting unit 55 are housed in the housing 51 and fixed to the body of the automatic winder 1. Fig. 4A is a diagram showing the arrangement relationship between the yarn accumulating device 40 and the detecting section 53. Fig. 4B is a diagram showing the arrangement relationship between the yarn accumulating device 40 and the light emitting section 55. Fig. 4C is a diagram showing the arrangement relationship between the yarn accumulating device 40 and the detecting unit 50.

The detection unit 53 includes: a line sensor 53A for detecting whether or not the yarn Y in the straight line section ST1 connecting the upstream end 41f and the downstream end 41e in the traveling direction of the yarn Y is present in the storage area a formed on the outer peripheral surface 41d of the cylindrical portion 41c, and a lens 53B for reducing the incident light. Examples of the line sensor 53A are a CCD image sensor or a CMOS image sensor that obtains light amounts from photodiodes arranged in a row. The line sensor 53A receives light via a lens 53B that reduces incident light. In the present embodiment, the linear sensor 53A is provided so that the extending direction of the linear section ST1 is parallel to the extending direction of the rotary shaft C1, but the linear sensor 53A may be provided so that the extending direction of the linear section ST1 intersects with the extending direction of the rotary shaft C1.

The light emitting section 55 has two light sources 55B, 55B; and an optical waveguide 55C that converts light emitted from the two light sources 55B, 55B into surface light and emits the surface light toward the accumulating roller 41. A part of the structural members of the optical waveguide 55C includes an acrylic plate or the like that guides light, a diffusion plate or the like that diffuses light, and the like. An example of the two light sources 55B and 55B is an LED (Light EmittingDiode: light emitting diode) provided on the LED board 55A. Further, the number of light sources is not limited to two.

The line sensor 53A is provided at a position where light from the light emitting unit 55 reflected not by the outer peripheral surface 41d of the accumulating roller 41 but by the yarn Y accumulated in the accumulating roller 41 is incident on the light from the light emitting unit 55. For example, as shown in fig. 4C, the light emitting portion 55 emits light at an irradiation angle θ ranging from 0 ° to 30 °. "the wired sensor 53A is disposed so as not to be incident on the outer peripheral surface 41d of the accumulating roller 41 and reflect light from the light emitting section 55" means that light emitted from the light emitting section 55 at such an angle is totally reflected by the outer peripheral surface 41d of the accumulating roller 41 and the wired sensor 53A is disposed at such a position that the reflected light is not incident.

Here, one of the straight lines orthogonal to the rotation axis C1 is assumed as a first straight line L1, and one of the straight lines parallel to the first straight line L1 and in contact with the outer peripheral surface 41d of the accumulating roller 41 is assumed as a second straight line L2. The line sensor 53A is disposed between the second straight line L2 and the first straight line L1. The light receiving direction of the line sensor 53A is substantially parallel to the first line L1. In other words, light enters the radiation sensor 53A from a direction substantially parallel to the first line L1.

The cover 47 is provided so as to face a part of the outer peripheral surface 41d of the accumulating roller 41. The cover 47 is provided on at least a part of the traveling direction of the light from the light emitting portion 55 reflected on the outer peripheral surface 41d of the accumulating roller 41.

Further, even if the cover 47 is not provided, the periphery of the yarn accumulating device 40 may be configured so that a structure portion that reflects light in the traveling direction of the light from the light emitting portion 55 is not arranged.

(2-3) yarn guide portion

Next, a detailed configuration of the yarn guide 7 for guiding the yarn Y between the yarn feeder 6 and the yarn accumulating device 40 will be described with reference to fig. 2. The yarn guide 7 is disposed in a yarn path (yarn travel path) of the yarn Y, and includes an unwinding assisting device 10, a lower yarn detector 11, a tension applying portion 12, a catching device 13, a splicing device 14, a yarn monitoring device 16, a yarn ejecting portion 60, and a yarn guide tube 80.

The unwinding assisting device 10 oscillates the yarn Y unwound from the yarn feeding bobbin 21, and brings the movable member 27 into contact with a balloon formed on the upper portion of the yarn feeding bobbin 21, thereby appropriately controlling the size of the balloon to assist the unwinding of the yarn Y.

The lower yarn detector 11 is disposed at a position close to the unwinding assisting device 10 on the downstream side of the unwinding assisting device 10. The lower yarn detector 11 defines the presence or absence of the yarn Y supplied from the unwinding assisting device 10.

The tension applying unit 12 applies a predetermined tension to the advancing yarn Y. The tension applying unit 12 applies a predetermined tension to the yarn Y based on the tension of the yarn Y detected by the tension sensor. The tension applying portion 12 is configured as a gate formed by disposing movable comb teeth with respect to fixed comb teeth, and applies a predetermined resistance by advancing the yarn Y between the comb teeth. The movable-side comb teeth are configured to be movable, for example, by a solenoid, so that the comb teeth are brought into an engaged state or a disengaged state with each other. Thereby, the tension applying unit 12 can adjust the tension applied to the yarn Y. The structure of the tension applying portion 12 is not particularly limited, and may be, for example, a disk type tension applying portion.

The catching device 13 (an example of a yarn catching portion) is disposed between the yarn splicing device 14 and the yarn feeding portion 6, more specifically, downstream of the tension applying portion 12. The catching device 13 has a first catching part 13A and a second catching part 13B. In the present embodiment, the first capturing section 13A and the second capturing section 13B are integrated and configured as one member. Each of the first capturing portion 13A and the second capturing portion 13B is connected to a negative pressure source.

The first catching portion 13A is formed as a tubular member having an opening formed at a distal end portion thereof. The first catching portion 13A sucks and catches the yarn Y ejected from the yarn ejecting portion 60 toward the yarn accumulating device 40 by generating a suction air flow at the time of joining and sucking an internal space (guide path) of the yarn guide tube 80 described later.

The second catching portion 13B is formed as a tubular member having an opening formed at a distal end portion thereof. The second catching portion 13B is provided swingably. The second catching portion 13B swings between a catching position (a position indicated by a solid line in fig. 2) for catching the yarn Y supplied from the unwinding assisting device 10 and a guiding position (a position indicated by a broken line in fig. 2) for guiding the yarn Y to the splicing device 14. The capturing position may be a standby position of the second capturing section 13B.

The second catching portion 13B is configured to generate a suction air flow on the front end side of the lower yarn detector 11 in a state where the downstream side thereof is close to the yarn path at the catching position, thereby sucking and catching the yarn end of the yarn feeding bobbin 21. The second catching portion 13B attracts and catches the yarn end of the cut yarn Y on the yarn feeding bobbin 21 side when the yarn Y is cut by the cutter 15. The second catching portion 13B may be configured to suck and remove air and the like adhering to the advancing yarn Y by generating a suction air flow on the tip side thereof.

An auxiliary blowing unit 28 is provided for blowing the yarn end to a position on the downstream side of the lower yarn detector 11 (the tip end of the second catching unit 13B) immediately after the new yarn feeding bobbin 21 is fed to the yarn feeding unit 6 when the yarn Y is caught by the second catching unit 13B.

The auxiliary blowing unit 28 ejects compressed air into the hollow conveyance tray 26 and the yarn feeding bobbin 21 to form an air flow for blowing the yarn Y of the yarn feeding bobbin 21 toward the yarn detector 11 at the tip end of the yarn feeding bobbin 21. When the newly supplied yarn feeding bobbin 21 is supported by the yarn feeding section 6, the auxiliary blowing section 28 is operated, so that the yarn end on the yarn feeding bobbin 21 side can be reliably blown toward the lower yarn detector 11 side.

The yarn splicing device 14 splices the broken yarn Y. The yarn joining device 14 joins the terminal end portion of the yarn Y on the yarn feeding bobbin 21 side to the terminal end portion of the yarn Y on the yarn accumulating device 40 side when the yarn monitoring device 16 detects a yarn defect and cuts the yarn Y by the cutter 15, when the yarn Y is cut during unwinding from the yarn feeding bobbin 21, or when the yarn Y is disconnected between the yarn feeding bobbin 21 and the yarn accumulating device 40, for example, when the yarn feeding bobbin 21 is replaced. The yarn splicing device 14 is disposed at a position slightly retracted from the yarn path. The yarn Y can be continuously set by the yarn joining device 14 by connecting the yarn ends to each other. As the joint device 14, a device using a fluid such as compressed air or a mechanical device can be used.

The yarn monitoring device 16 monitors the thickness of the yarn Y by an appropriate sensor to detect yarn defects such as a thick knot and foreign matter contamination. A cutter 15 is disposed at a position close to the yarn monitoring device 16 on the upstream side of the yarn monitoring device 16. When the yarn monitoring device 16 detects a yarn defect, the cutter 15 immediately cuts the yarn Y. The cutter 15 and the yarn monitoring device 16 are housed in a common housing 19. The housing 19 accommodating the yarn monitoring device 16 is disposed on the downstream side of the yarn splicing device 14.

The yarn monitoring device 16 (housing 19) is provided with a hole H (fig. 5) through which the yarn Y passes when the yarn Y is wound and the package 30 is formed, and a yarn guide slit SL (fig. 5) for guiding the yarn Y pulled out from the yarn guide tube 80 to the hole H. The hole H is configured to easily move the yarn Y from the yarn feeding portion 6 side to the yarn accumulating device 40 side, and to make it difficult to move the yarn Y from the yarn accumulating device 40 side to the yarn feeding portion 6 side.

The yarn ejection section 60 is disposed near the tapered portion 41a on one end side of the accumulating roller 41 (upstream side of the accumulating roller 41), and is constituted by a thin cylindrical member through which the yarn Y can pass. Compressed air can be ejected from the yarn ejecting section 60 toward the yarn feeding section 6 from the yarn accumulating device 40. When the yarn Y is in a disconnected state between the yarn feeding bobbin 21 and the yarn accumulating device 40, the yarn ejecting section 60 sucks the yarn end of the yarn Y on the side of the yarn accumulating device 40, and blows the yarn to the guide path of the yarn feeding bobbin 80.

On the other hand, at the time of normal yarn winding, the yarn ejection section 60 guides the yarn Y fed from the yarn feeding section 6 to the tapered section 41a on one end side of the accumulating roller 41. When the storage roller 41 is rotated in one direction by driving the drive motor 45, the yarn Y guided by the yarn ejection section 60 to the tapered section 41a on one end side of the storage roller 41 is wound in sequence while pushing the preceding yarn layer from one end side (upstream side) of the cylindrical section 41 c. As a result, the yarn Y wound around the outer peripheral surface 41d of the accumulating roller 41 is pressed by the newly wound yarn Y, and is sequentially fed toward the other end (downstream side). Thereby, the yarn Y is wound around the outer peripheral surface of the cylindrical portion 41c of the accumulating roller 41 in a spiral arrangement from one end side toward the other end side.

As will be described in detail later, the yarn ejecting section 60 is movable by the moving section 90 to an optimal position (referred to as a yarn guiding position) when the yarn Y fed from the yarn feeding section 6 is guided to the accumulating roller 41, and to an optimal position (referred to as a yarn drawing position) when the yarn end of the yarn Y accumulated in the yarn accumulating device 40 is drawn out by suction and guided to the yarn joining device 14 (guide path of the yarn guide tube 80).

The yarn guide tube 80 is provided between the yarn ejecting portion 60 and the first catching portion 13A, and guides the yarn Y ejected from the yarn ejecting portion 60 to the first catching portion 13A. The yarn guide tube 80 is a curved tubular member, and openings are formed at both ends in the longitudinal direction. One opening of the yarn guide tube 80 is disposed close to the yarn feeding portion 6 side opening of the yarn ejecting portion 60. The other opening is disposed in a state of facing the first catching portion 13A. That is, one opening of the yarn guide tube 80 is an inlet IN (fig. 8) of the yarn Y discharged from the yarn discharge portion 60. On the other hand, the other opening is the outlet OUT of the yarn Y (fig. 8).

A guide path is formed inside the yarn guide tube 80. The guide path connects the openings (i.e., the inlet IN and the outlet OUT) at both ends of the yarn guide tube 80 to each other so as to bypass the yarn monitoring device 16, the splicing device 14, and the like. A slit penetrating the guide path is formed throughout the entire length of the yarn guide tube 80.

When the yarn Y is in the disconnected state between the yarn feeding bobbin 21 and the yarn accumulating device 40, the yarn guide bobbin 80 guides the yarn Y blown off to the guide path by the yarn ejection section 60 to the first catching section 13A along the guide path, and the guided yarn Y is caught by the first catching section 13A. Since the yarn guide tube 80 has a slit extending through the guide path over the entire length, the yarn guide tube 80 can pull the yarn Y caught by the first catching portion 13A out of the guide path of the yarn guide tube 80 and guide the yarn Y toward the yarn splicing device 14.

(2-4) moving part

The following describes a detailed configuration of the moving unit 90 of the moving yarn ejecting unit 60 with reference to fig. 5. Fig. 5 is a diagram showing a detailed configuration of the moving unit 90. The moving portion 90 includes a cam 91, a first arm 92, a second arm 93, a position sensor 94, and a restricting lever 95. The cam 91 is rotatably provided on the housing CH about the first axis A1. The housing CH is fixed to a case 19 housing the cutter 15 and the yarn monitoring device 16.

A first pulley 91A is fixed to the cam 91. A belt 91B is hung on the first pulley 91A. A second pulley 91C is hung on the opposite side of the first pulley 91A to which the belt 91B is hung. The second pulley 91C is fixed to an output rotation shaft of the motor 91D. The rotation of the output rotation shaft of the motor 91D is transmitted to the cam 91 via the second pulley 91C, the belt 91B, and the first pulley 91A, and the cam 91 rotates about the first axis A1. The rotation of the motor 91D is controlled by the control unit 25.

The side surface PH of the cam 91 against which the first arm 92 abuts increases as the distance from the origin O (i.e., the radius of the cam 91) increases from the reference position (referred to as the origin O) in the counterclockwise direction in fig. 5.

The first arm 92 is an elongated member. One end of the first arm 92 abuts against the outer periphery of the cam 91. On the other hand, the other end of the first arm 92 is rotatably fixed to the housing CH about a second axis A2 parallel to the first axis A1. Since the distance between the side surface PH of the cam 91 and the first axis A1 increases as it moves away from the origin O, the distance between the contact position of the first arm 92 and the cam 91 and the first axis A1 increases as the cam 91 rotates (clockwise in fig. 5). As shown in fig. 6, the distance between the abutment position of the first arm 92 and the side surface PH of the cam 91 and the first axis A1 increases as the cam 91 rotates, and thus as shown in fig. 6, the first arm 92 rotates about the second axis A2 as the cam 91 rotates. Fig. 6 is a diagram showing a state in which the first arm 92 rotates with the rotation of the cam 91.

The second arm 93 is an elongated member, and the yarn ejection portion 60 is fixed to one end side thereof. On the other hand, the other end of the second arm 93 is rotatably attached with the first arm 92 about the second axis A2. Thereby, the second arm 93 rotates around the second axis A2 with the rotation of the first arm 92. The second arm 93 rotates about the second axis A2, and the yarn ejection portion 60 fixed to one end of the second arm 93 moves.

The position sensor 94 detects whether or not one end of the first arm 92 abuts on the position of the origin O of the cam 91 by detecting the second arm 93. When one end of the first arm 92 is brought into contact with the origin O of the cam 91, the control unit 25 rotates the cam 91 so that the one end of the first arm 92 enters the semicircular portion on the origin O side of the cam 91, and determines that the one end of the first arm 92 is brought into contact with the position of the origin O of the cam 91 when the second arm 93 is detected by the position sensor 94. The position sensor 94 is, for example, a magnet sensor.

The restricting lever 95 is formed to extend from the other end (end on the second axis A2 side) of the second arm 93 in a direction perpendicular to the extending direction of the second arm 93. Since the regulating lever 95 is integrated with the second arm 93, the yarn ejection portion 60 attached to the second arm 93 and the regulating lever 95 can move simultaneously with the rotation of the second arm 93.

Specifically, as shown in fig. 5, when one end of the first arm 92 abuts against the position of the origin O of the cam 91, the yarn ejection section 60 is disposed at a position (referred to as a yarn guiding position) where the yarn Y is guided from the yarn feeding section 6 side to the yarn accumulating device 40 side. On the other hand, the regulating lever 95 is disposed at a position deviated from the yarn guide slit SL of the yarn monitoring device 16. As described later, when the regulating lever 95 is located at a position away from the yarn guide slit SL, the yarn Y pulled out from the yarn guide tube 80 is guided to the hole H of the yarn monitoring device 16 and is guided to a position where the yarn Y can be wound onto the winding bobbin 22 (referred to as a yarn winding position). Therefore, the position of the restriction lever 95 when it is deviated from the guide slit SL is referred to as the introduction position.

More specifically, as shown in fig. 2, the yarn winding position is a position of the yarn Y in a state where the yarn Y is linearly guided at the shortest distance from the yarn ejection unit 60 to the yarn feeding unit 6.

On the other hand, as shown in fig. 6, when one end of the first arm 92 is in contact with the middle position (referred to as a first outer peripheral position PH 1) of the side surface PH of the cam 91, the yarn ejection section 60 is disposed at a position (referred to as a yarn drawing position) where the end of the yarn Y stored in the yarn storage device 40 is drawn out and ejected toward the yarn feeding section 6. On the other hand, the regulating lever 95 is disposed in a state where a part thereof is hung on the yarn guide slit SL of the yarn monitoring device 16. As described later, in a state where a part of the regulating lever 95 is caught in the yarn guide slit SL, the yarn Y pulled out from the yarn guide tube 80 is regulated in movement by the regulating lever 95 and is not guided to the hole H of the yarn monitoring device 16. That is, the restricting lever 95 restricts the yarn Y pulled out from the yarn guide tube 80 from being guided to the hole H. Therefore, the position of the regulating lever 95 in a state where a part of the regulating lever 95 is hung on the guide slit SL is referred to as a regulating position.

(2-5) yarn guiding tube

The specific structure of the yarn guide tube 80 for guiding the yarn Y ejected from the yarn ejecting section 60 to the first catching section 13A will be described below with reference to fig. 7 to 9. Fig. 7 is a diagram showing the overall structure of the yarn guide tube 80. Fig. 8 is a front view of the tubular member 81. Fig. 9 is a side view of the tubular member 81. The yarn guide tube 80 has a tubular member 81, a pull-out slit 82 (an example of a slit), and fins 83.

The tubular member 81 is a hollow tubular member. The inner space of the tubular member 81 forms a guide path for guiding the yarn Y ejected from the yarn ejecting section 60 to the first catching section 13A. One end of the tubular member 81 is disposed IN the vicinity of the yarn ejecting section 60, and is an inlet section IN which the yarn Y ejected from the yarn ejecting section 60 is introduced into the guide path. The other end of the tubular member 81 is disposed in the vicinity of the first catching portion 13A, and is an outlet OUT from which the yarn Y guided in the guide path flies OUT toward the first catching portion 13A.

The tubular member 81 has an approximately U-shape. Specifically, the tubular member 81 first extends from the inlet portion IN to the outside of the yarn guide portion 7, changes the extension direction at the first bending portion 81a and extends downward (upstream direction), and changes the extension direction at the second bending portion 81b and extends toward the first catching portion 13A.

As shown in fig. 9, an area enlarging portion 81c is provided from the first bending portion 81a to the outlet OUT on the side of the tubular member 81 facing each structural member of the winder unit 2. The cross-sectional area of the guide path of the portion of the tubular member 81 where the area expansion portion 81c is provided (i.e., the portion from the first curved portion 81a to the first capturing portion 13A side) is larger than the cross-sectional area of the guide path of the portion where the area expansion portion 81c is not provided (i.e., the portion from the inlet portion IN to the first curved portion 81 a).

By configuring the guide path of the tubular member 81 as described above, the air flow along the tubular member 81 can be generated outside the guide path by the air flow ejected from the yarn ejecting section 60 and the air flow generated in the guide path by the suction of the outlet OUT, while the air flow directed to the inside of the guide path (i.e., the air flow in the direction from the drawing slit 82 to the guide path) can be generated inside the guide path (the side where the drawing slit 82 is provided). Accordingly, the yarn Y is not pulled out from the pull-out slit 82 in the middle of the tubular member 81 before the yarn Y is guided to the first catching portion 13A, and therefore the yarn Y can be appropriately guided to the yarn winding position.

As shown in fig. 8 and 9, the tubular member 81 has a flat side surface. Specifically, when the tubular member 81 is fixed to the winder unit 2, the width of the tubular member 81 when the inside is viewed from the outside of the winder unit 2 is smaller than the width of the tubular member 81 when viewed from the side. This can improve the visibility of the winder unit 2. That is, each structural member of the winder unit 2 can be easily observed from the outside of the winder unit 2.

Further, a pair of rotation fixing members 84 and a locking member 85 are provided on the tubular member 81. One of the pair of rotation fixing members 84 is rotatably fixed to the housing 19 IN the vicinity of the inlet portion IN of the tubular member 81. The other of the pair of rotation fixing members 84 is rotatably fixed to the mounting portion 7a in the vicinity of the outlet OUT of the tubular member 81. By providing the pair of rotation fixing members 84 to the tubular member 81, the tubular member 81 can be pivoted in the yarn guide portion 7.

The engaging member 85 is a U-shaped member provided IN the vicinity of the inlet portion IN of the tubular member 81. The engaging member 85 allows the tubular member 81 to be attached to and detached from the yarn guide portion 7. Specifically, the engaging member 85 can fix (attach) the tubular member 81 to the yarn guide portion 7 by sandwiching the protruding member 86 provided in the housing 19 between the arms forming the U-shape. On the other hand, by releasing the clamp member 85 from the protruding member 86, the tubular member 81 can be removed from the yarn guide portion 7.

As described above, the tubular member 81 is simply removed from the yarn guide portion 7, so that the respective components of the winder unit 2 can be easily accessed. As a result, maintenance of the winder unit 2 becomes easy.

The drawing slit 82 is formed along the extending direction of the tubular member 81 on the side of the tubular member 81 facing each structural member of the winder unit 2, and connects the guide path inside the tubular member 81 with the external space. The drawing slit 82 draws the yarn Y captured by the first capturing portion 13A from the guide path toward the first capturing portion 13A (i.e., toward the yarn winding position).

As shown in fig. 8, the pull-out slit 82 is provided in parallel with the extending direction of the tubular member 81. As described above, in the present embodiment, since the area enlarging portion 81c is provided in the tubular member 81, the yarn Y is not pulled out from the pull-out slit 82 until the yarn Y is caught by the first catching portion 13A. Therefore, in the tubular member 81 of the present embodiment, the pull-out slit 82 does not need to be formed in a state of being twisted with respect to the extending direction of the tubular member 81. Therefore, the shape of the pull-out slit 82 can be a linear slit (a slit extending parallel to the extending direction of the tubular member 81) which is easier to manufacture than a twisted shape.

The fins 83 are provided to stand from the drawing slit 82 toward the side facing each component of the winder unit 2. The fin 83 extends linearly along the linear pull-out slit 82 in the up-down direction. When the yarn Y is pulled out from the guide path to the outside (yarn winding position) through the pull-out slit 82, the fin 83 guides the yarn Y so as to be pulled out along the pull-out slit 82 (i.e., the extending direction of the tubular member 81). By providing the fin 83 along the pull-out slit 82, the yarn Y can be prevented from being guided away from the yarn winding position. Specifically, when the yarn guide tube 80 is pulled out from the pull-out slit 82 and guided to the splicing device 14, the yarn guide tube is guided to an appropriate position.

(3) Action of winder unit

The operation of the winder unit will be described below. When the winder unit 2 is started, an initial operation for forming the package 30 is performed by the winder unit 2. In this initial operation, the yarn ejection unit 60 moves to the origin position. Specifically, as shown in fig. 5, the control unit 25 rotates the cam 91 so that one end of the first arm 92 contacts the origin O of the side surface PH of the cam 91, moves the restriction lever 95 to the guide position, and moves the yarn ejection unit 60 to the yarn guide position. Thus, the origin position of the regulating lever 95 is the introduction position, and the origin position of the yarn ejecting portion 60 is the yarn guiding position.

After the initial operation, the winder unit 2 starts the formation of the package 30. The formation of the package 30 is performed according to the flowchart shown in fig. 10. Fig. 10 is a flowchart showing the operation of forming the package 30 of the winder unit 2. Fig. 10 shows a flowchart when one package 30 is formed.

When the formation of the package 30 is started, the control unit 25 rotates the cam 91 so that one end of the first arm 92 contacts the origin O of the side surface PH of the cam 91, moves the restricting lever 95 to the introduction position, and moves the yarn ejection unit 60 to the yarn guide position (step S1). In the initial state, the regulating lever 95 is disposed at the introduction position, and the yarn ejection portion 60 is disposed at the yarn guiding position, as described above. Therefore, after the start of the winder unit 2, when the package 30 is first formed, the control unit 25 does not move the restricting lever 95 and the yarn ejecting unit 60.

By moving the yarn ejecting section 60 to the yarn guiding position, the yarn ejecting section 60 can guide the yarn Y supplied from the yarn supplying section 6 toward the yarn accumulating device 40. At this time, the regulating lever 95 moves to an introduction position at which the yarn Y is guided to the yarn guide slit SL and the hole H (i.e., the yarn winding position). As a result, as shown in fig. 11, the yarn Y fed from the yarn feeding section 6 is guided by the yarn guide slit SL and the hole H because the movement of the yarn Y is not restricted by the restricting lever 95. That is, the yarn Y supplied from the yarn supplying section 6 is guided to the yarn winding position. Fig. 11 is a view showing a state in which the yarn Y is arranged at the yarn winding position.

The regulating lever 95 is moved to the guide position, the yarn ejection unit 60 is moved to the yarn guide position, and after the yarn Y can be guided to the yarn winding position, winding of the yarn is started to form the package 30 (step S2). In step S2, the yarn Y unwound from the yarn feeding bobbin 21 is guided by the yarn guide 7 to the yarn accumulating device 40 in a state of being placed at the yarn winding position, and is temporarily accumulated by the yarn accumulating device 40 (accumulating roller 41). The yarn Y stored in the yarn storage device 40 is wound around the winding bobbin 22 to form the package 30.

In step S2, when starting to store the yarn Y in the yarn storage device 40, the control unit 25 monitors the tension of the yarn Y guided by the yarn guide unit 7, and stops the rotation of the storage roller 41 or may cut the yarn Y when the tension of the yarn Y exceeds a predetermined threshold value. This can prevent the yarn Y from being cut by tension breakage caused by the start of winding immediately after the yarn joining, for example, and the yarn Y from being bound.

In winding of the yarn Y, the control unit 25 determines in step S3 whether or not the yarn Y is cut by the cutter 15, the yarn Y is broken while being unwound from the yarn feeding bobbin 21, and the yarn Y is broken by replacement of the yarn feeding bobbin 21, or the like. If the yarn Y is not broken (no in step S3), the package 30 is formed in step S8.

On the other hand, when the yarn Y is broken (yes in step S3), the control unit 25 interrupts the winding of the yarn Y onto the winding bobbin 22 in step S4. Then, in step S5, as shown in fig. 6, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the first outer peripheral position PH1 of the side surface PH of the cam 91, moves the restricting lever 95 to the restricting position, and moves the yarn ejecting unit 60 to the yarn drawing position.

By moving the yarn ejecting section 60 to the yarn drawing position, the yarn ejecting section 60 can draw out the end of the yarn Y from the yarn accumulating device 40 and eject the yarn to the yarn guide tube 80. At this time, the regulating lever 95 moves to a regulating position for regulating the movement of the yarn Y to the yarn guide slit SL and the hole H. As a result, as shown in fig. 12, the yarn Y that has been pulled out from the yarn accumulating device 40 by the yarn ejection section 60 and caught by the first catching section 13A and then extended from the yarn guide tube 80 is restricted from moving toward the yarn guide slit SL and the hole H by the restricting lever 95. That is, the yarn Y extending outward from the yarn guide tube 80 cannot move to the yarn guide slit SL and the hole H, and is not guided to the yarn winding position. Fig. 12 is a view showing a state in which the movement of the yarn Y is regulated by the regulating lever 95.

After the yarn ejecting section 60 is moved to the yarn pulling-out position, the yarn ejecting section 60 pulls out the end of the yarn Y on the side of the yarn accumulating device 40 from the yarn accumulating device 40 by sucking the end into the yarn accumulating device, and blows out the pulled yarn Y toward the yarn guide tube 80 (step S6). As a result, the end of the yarn Y on the yarn accumulating device 40 side moves to the first catching portion 13A in the guide path in the yarn guide tube 80, and is caught by the first catching portion 13A. Then, the yarn Y inside the yarn guide tube 80 is pulled out from the pull-out slit 82 of the yarn guide tube 80 by the suction force of the first catching portion 13A, and is guided to the yarn splicing device 14. The end of the yarn Y on the yarn feeding portion 6 side is caught by the second catching portion 13B located at the catching position, and is guided to the yarn splicing device 14.

When the end of the yarn Y on the yarn accumulating device 40 side is guided to the yarn splicing device 14, the yarn Y moves from the yarn accumulating device 40 side to the yarn feeding portion 6 side (i.e., downstream to upstream). As described above, the hole H of the yarn monitoring device 16 is configured so as to be difficult to move from the yarn accumulating device 40 side to the yarn feeding portion 6 side. Therefore, when the yarn Y guided to the hole H moves from the yarn accumulating device 40 side to the yarn feeding portion 6 side, for example, the yarn Y is pulled up from the hole H, and thus, a state in which the yarn that does not travel in the traveling direction is retained, that is, "a block of yarn" may be generated, and accumulated in the hole H and the vicinity thereof. Then, when the yarn Y is guided from the yarn feeder 6 side to the yarn accumulating device 40 side, the "yarn block" accumulated in the hole H and the vicinity thereof may move to the yarn accumulating device 40 due to the movement of the yarn Y to the yarn accumulating device 40 side and accumulate in the yarn accumulating device 40.

Therefore, when the yarn Y is moved from the yarn accumulating device 40 side to the yarn feeding portion 6 side, the restriction lever 95 does not guide the yarn Y to the hole H, and thus, for example, the yarn Y is not guided to the yarn winding position (the hole H of the yarn monitoring device 16) at an improper timing when the yarn Y is moved from the yarn accumulating device 40 side to the yarn feeding portion 6 side (as a result, the "cutting residue" of the yarn Y is generated).

After the end of the yarn Y on the yarn accumulating device 40 side and the end of the yarn Y on the yarn feeding portion 6 side are led to the joining device 14, the ends of the yarns Y are joined by the joining device 14 (step S7).

After the splice is completed, the formation of the package 30 is restarted. That is, the forming operation of the package 30 returns to step S1. Specifically, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the origin O of the side surface PH of the cam 91, moves the restriction lever 95 to the guide position, and moves the yarn ejection unit 60 to the yarn guide position. As a result, the yarn Y moving from the yarn feeder 6 side to the yarn accumulating device 40 side is guided to the hole H (i.e., to the yarn winding position), and is guided to the yarn accumulating device 40 by the yarn ejecting section 60. Then, winding of the yarn Y onto the winding bobbin 22 (package 30) is restarted.

In this way, when the yarn Y moves from the yarn feeder 6 side to the yarn accumulating device 40 side, the regulating lever 95 is disposed at the introducing position, and the yarn Y is guided to the hole H. Since the hole H allows the yarn Y to easily move in the direction from the yarn feeder 6 side to the yarn accumulating device 40 side, even if the yarn Y moving from the yarn feeder 6 side to the yarn accumulating device 40 side is guided to the hole H, the "yarn lump" does not occur. That is, in the winder unit 2, the yarn Y can be guided to the yarn winding position (the yarn monitoring device 16, etc.) at an appropriate timing when the yarn Y moves from the yarn feeding portion 6 side to the yarn accumulating device 40 side.

During the winding of the yarn Y, the control unit 25 winds a predetermined amount of the yarn Y around the winding bobbin 22 in step S8, and determines whether or not the formation of the package 30 is completed. When the formation of the package 30 is not completed (no in step S8), the control unit 25 continues winding the yarn Y.

On the other hand, when the formation of the package 30 is completed (yes in step S8), the control unit 25 stops winding of the yarn Y (step S9), and ends the formation of the package 30. The formed package 30 is removed from the package forming section 8 by the doffing device 5 and conveyed to a predetermined position. Then, in the winder unit 2, when another package 30 is formed, the above steps S1 to S11 are performed again.

2. Other embodiments

Although the above describes an embodiment of the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention. In particular, the plurality of embodiments and modifications described in the present specification can be arbitrarily combined as needed.

(A) The processing content of each step and the execution sequence of each step in the flowchart of fig. 10 showing the operation of the winder unit 2 can be arbitrarily changed within a range not departing from the gist of the invention.

(B) In the first embodiment, the yarn feeding portion 6 is a member for feeding the yarn Y unwound from the yarn feeding bobbin 21. That is, the winder unit 2 of the first embodiment is an automatic winder. However, the present invention is not limited thereto, and other types of yarn feeding portions 6 may be used. For example, the yarn feeding portion 6 may be a member for feeding the yarn Y spun by the force of air. That is, the winder unit 2 may be an air spinning machine.

(C) Alternatively, the yarn feeding portion 6 may be a member for feeding the yarn Y spun by the rotational force of the rotor. That is, the winder unit 2 may be an open-end spinning machine.

(D) The moving portion 90 may have a structure other than the structure described with reference to fig. 5 and 6, and may be any structure capable of moving the yarn ejecting portion 60 and the restricting lever 95.

(E) The movement portion for moving the yarn ejecting portion 60 and the movement portion for moving the restricting lever 95 may be separate movement portions.

3. Features of the embodiments

The above embodiment can be explained as follows.

(1) The yarn winding device (e.g., winder unit 2) includes a supply unit (e.g., yarn supply unit 6), a yarn accumulating device (e.g., yarn accumulating device 40), a winding unit (e.g., package forming unit 8), a splicing device (e.g., splicing device 14), and a yarn guide unit (e.g., yarn guide unit 7). The supply unit supplies a yarn (for example, yarn Y). The yarn accumulating device accumulates the yarn supplied from the supply unit. The winding unit winds the yarn stored in the yarn storage device to form a package (for example, package 30). The yarn joining device joins the yarn on the supply unit side to the yarn accumulating device side when the yarn is disconnected between the supply unit and the yarn accumulating device. The yarn guide portion guides the yarn between the yarn accumulating device and the yarn splicing device.

The yarn guide portion includes a yarn ejection portion (e.g., yarn ejection portion 60), a yarn catching portion (e.g., catching device 13), a yarn guide tube (e.g., yarn guide tube 80), and a regulating lever (e.g., regulating lever 95). The yarn ejecting section pulls out the yarn stored in the yarn storage device and ejects the yarn to the supply section side. The yarn catching section is disposed between the yarn splicing device and the supply section, and catches the yarn ejected from the yarn ejecting section. The yarn guide tube is provided between the yarn ejecting section and the yarn catching section, and guides the yarn ejected from the yarn ejecting section to the yarn catching section. The regulating lever temporarily regulates the yarn catch section to guide the yarn pulled out from the yarn guide tube to the yarn winding position when winding the yarn.

In the yarn winding device, the yarn pulled out from the yarn guide tube is temporarily not guided by the regulating lever to a position (yarn winding position) when the yarn is wound by the yarn catching portion. Thus, the yarn pulled out from the yarn guide bobbin is not guided to the yarn winding position (for example, a yarn monitoring device) at an improper timing. That is, the yarn can be guided to the yarn winding position at an appropriate timing.

(2) The yarn winding device of the above (1) may further include a moving unit (for example, the moving unit 90). The movement unit moves the restricting lever between a restricting position at which the restricting yarn is guided by the yarn catching unit to the yarn winding position and an introducing position at which the yarn can be guided to the yarn winding position. This makes it possible to switch the regulating lever between a state in which the introduction of the yarn into the yarn winding position is regulated and a state in which the yarn can be guided to the yarn winding position by the yarn catching section.

(3) In the yarn winding device according to the above (2), the moving unit may move the yarn ejecting unit between a yarn guiding position at which the yarn supplied from the supplying unit is guided to the yarn accumulating device and a yarn drawing position at which the yarn accumulated in the yarn accumulating device is drawn out and ejected to the supplying unit side. Thus, the movement of the restriction lever and the movement of the yarn ejection portion can be performed simultaneously by the movement portion.

(4) In the yarn winding devices of (1) to (3), the yarn guide tube may be detachable from the yarn guide portion. Thereby, maintenance of the yarn winding device is facilitated.

(5) IN the yarn winding devices (1) to (4), the yarn guide tube may have an inlet (for example, an inlet IN) and a curved portion (for example, a first curved portion 81 a). The inlet portion sucks the yarn discharged from the yarn discharge portion toward the inner guide path. The bending portion changes the moving direction of the yarn attracted to the guide path. In this case, the cross-sectional area of the guide path from the bending portion of the yarn guide bobbin to the yarn catching portion may be larger than the cross-sectional area of the guide path from the inlet portion to the bending portion. Thus, the yarn is not pulled out from the middle of the yarn guide tube.

(6) In the yarn winding devices of the above (1) to (5), the yarn guide tube may have a flat side surface. This can improve the visibility of the yarn winding device.

(7) In the yarn winding devices (1) to (6), the yarn guide tube may have a slit (for example, a pull-out slit 82) for guiding the yarn guided to the yarn winding position by the yarn catching portion from the guide path to the yarn catching portion side, and a fin (for example, a fin 83) provided to stand up from the slit. This prevents the yarn from being guided away from the yarn winding position.

(8) In the yarn winding devices (1) to (7), the yarn guide tube may have a slit through which the yarn guided by the yarn catching portion from the inner guide path to the yarn catching portion side can be led out. In this case, the slit may be parallel to the extending direction of the yarn guide tube. Thereby, the yarn guide tube is easily manufactured.

(9) In the yarn winding devices (1) to (8), the supply unit may supply the yarn unwound from the yarn feeding bobbin. In this way, in the automatic winder having the yarn accumulating device, the yarn can be guided to the yarn winding position appropriately.

(10) In the yarn winding devices (1) to (8), the supply unit may supply the yarn spun by the force of air. In this way, in the air spinning machine having the yarn accumulating device, the yarn can be guided to the yarn winding position appropriately.

(11) In the yarn winding devices (1) to (8), the supply unit may supply the yarn spun by the rotational force of the rotor. In this way, in the open-end spinning machine having the yarn accumulating device, the yarn can be guided to the yarn winding position appropriately.

[ possibility of industrial use ]

The present invention can be widely applied to a yarn winding device.

Claims (11)

1. A yarn winding device is characterized by comprising:

a supply unit that supplies yarn;

a yarn accumulating device for accumulating the yarn supplied from the supply unit;

a winding unit for winding the yarn stored in the yarn storage device to form a package;

a yarn joining device for joining the yarn on the side of the supply unit to the yarn accumulating device when the yarn is disconnected between the supply unit and the yarn accumulating device; and

a yarn guiding part for guiding the yarn between the yarn accumulating device and the yarn splicing device,

the yarn guide section includes:

a yarn ejecting section that ejects the yarn stored in the yarn storage device toward the supply section by pulling the yarn out;

a yarn catching section arranged between the yarn splicing device and the supplying section and catching the yarn ejected from the yarn ejecting section;

a yarn guide tube provided between the yarn ejecting section and the yarn catching section and guiding the yarn ejected from the yarn ejecting section to the yarn catching section; and

and a regulating lever for temporarily regulating the yarn winding position at which the yarn pulled out from the yarn guide tube (80) is wound by the yarn catching section.

2. The yarn winding device according to claim 1, further comprising:

and a moving unit configured to move the restricting lever between a restricting position at which the restricting yarn is guided to the yarn winding position by the yarn catching unit and an introducing position at which the yarn can be guided to the yarn winding position.

3. A yarn winding device as claimed in claim 2, characterized in that,

the moving unit moves the yarn ejecting unit between a yarn guiding position at which the yarn supplied from the supplying unit is guided to the yarn accumulating device and a yarn drawing position at which the yarn accumulated in the yarn accumulating device is drawn out and ejected toward the supplying unit.

4. A yarn winding device as claimed in any one of the claims 1 to 3, characterized in that,

the yarn guide tube is detachable from the yarn guide portion.

5. The yarn winding device as claimed in any one of claims 1 to 4, wherein,

the yarn guide tube includes:

an inlet portion for sucking the yarn ejected from the yarn ejecting portion into an inner guide path; and

a bending part which changes the moving direction of the yarn attracted to the guiding path,

The cross-sectional area of the guide path of the yarn guide bobbin from the bending portion to the yarn catching portion is larger than the cross-sectional area of the guide path from the inlet portion to the bending portion.

6. Yarn winding device as claimed in any of the claims 1-5, characterized in that,

the yarn guide tube has a flat side.

7. The yarn winding device as claimed in any one of claims 1 to 6, characterized in that,

the yarn guide tube includes:

a slit for guiding the yarn guided from the yarn catching section to the yarn winding position from the inner guide path to the yarn catching section side; and

and a fin which stands up from the narrow slit.

8. The yarn winding device as claimed in any one of claims 1 to 7, characterized in that,

the yarn guide tube has a slit through which the yarn guided from the inner guide path to the yarn catching portion side by the yarn catching portion can be guided,

the narrow slit is parallel to the extending direction of the yarn guide tube.

9. Yarn winding device as claimed in any of the claims 1-8, characterized in that,

the supply unit supplies yarn unwound from the yarn feeding bobbin.

10. Yarn winding device as claimed in any of the claims 1-8, characterized in that,

The supply unit supplies yarn spun by the force of air.

11. Yarn winding device as claimed in any of the claims 1-8, characterized in that,

the supply unit supplies yarn spun by the rotational force of the rotor.