JP2024055547A - Thread winder device - Google Patents

Abstract

To properly guide yarn to a yarn winding position.SOLUTION: A winder unit 2 includes a yarn feeding section 6 that supplies yarn Y, a yarn storage device 40 that stores the yarn Y, a package forming section 8 that winds up the yarn Y to form a package 30, a yarn splicing device 14 that splices the yarn Y on the yarn feeding section 6 side and the yarn Y on the yarn storage device 40 side and a yarn guide section 7 that guides the yarn Y between the yarn storage device 40 and the yarn splicing device 14. The yarn guide section 7 includes: a yarn ejection section 60 that pulls out the yarn Y and ejects the same toward the yarn feeding section 6 side; a catching device 13 that catches the yarn Y ejected by the yarn ejection section 60; a yarn guide pipe 80 that guides the yarn Y ejected from the yarn ejection section 60 to the catching device 13; and a regulation lever 95 that restricts the yarn Y pulled out from the yarn guide pipe 80 from being guided to a yarn winding position.SELECTED DRAWING: Figure 12

Description

The present invention relates to a yarn winding device.

Conventionally, a yarn winding device is known that includes a yarn supplying section that supports a yarn supplying bobbin, a yarn storage device that unwinds the yarn from the yarn supplying bobbin supported by the yarn supplying section and winds the unwound yarn, a yarn joining device that joins the yarn end of the yarn on the yarn supplying bobbin side to the yarn storage device side, and a yarn winding section that winds the yarn to form a package. This yarn winding device is provided with a pull-out section (air sucker device) that, when the yarn is broken between the yarn bobbin and the yarn storage device, captures the yarn on the yarn storage device side and blows it into the yarn guide path, thereby pulling the yarn along the guide path and causing it to be captured by the capture section (see, for example, Patent Document 1).

JP 2016-050053 A

The yarn pulled out by the pull-out section is captured by the capture section and then moves from the yarn guide path toward the yarn joining device. The yarn that has moved toward the yarn joining device is guided to other devices such as the yarn joining device and a yarn monitoring device that detects defects in the yarn. In other words, the yarn that has moved toward the yarn joining device is guided to a position where it can be wound (yarn winding position).

In conventional devices, the yarn could be guided to a position where it can be wound while it is being pulled out by the pull-out section. In this case, the yarn guided to the yarn monitoring device while it is being pulled out by the pull-out section is moved in the opposite direction to the yarn movement direction (winding direction) determined by the yarn monitoring device. Because the yarn guide mechanism of the yarn monitoring device is not designed to move in a different direction opposite to the determined yarn movement direction, there is a possibility that the yarn may get caught. The yarn lump caused by this catch may move toward the yarn storage device when the yarn after splicing is wound.

The objective of the present invention is to properly guide the thread to the thread winding position.

In the following, several aspects will be described as means for solving the problems. These aspects can be arbitrarily combined as necessary.
A yarn winding device according to one aspect of the present invention includes a supplying unit, a yarn storage device, a winding unit, a yarn joining device, and a yarn guiding unit. The supplying unit supplies the yarn. The yarn storage device stores the yarn supplied from the supplying unit. The winding unit winds the yarn stored in the yarn storage device to form a package. When the yarn is broken between the supplying unit and the yarn storage device, the yarn joining device joins the yarn on the supplying unit side and the yarn on the yarn storage device side. The yarn guiding unit guides the yarn between the yarn storage device and the yarn joining device.

The yarn guide section has a yarn ejection section, a yarn capture section, a yarn guide pipe, and a regulating lever. The yarn ejection section pulls out the yarn stored in the yarn storage device and ejects it toward the supply section. The yarn capture section is disposed between the yarn joining device and the supply section, and captures the yarn ejected by the yarn ejection section. The yarn guide pipe is disposed between the yarn ejection section and the yarn capture section, and guides the yarn ejected from the yarn ejection section to the yarn capture section. The regulating lever temporarily restricts the yarn pulled out from the yarn guide pipe from being guided to the yarn winding position when winding the yarn.

In the above-mentioned yarn winding device, the regulating lever temporarily prevents the yarn pulled out from the yarn guide pipe from being guided to the position where the yarn is wound (yarn winding position). This prevents the yarn pulled out from the yarn guide pipe from being guided to the yarn winding position (e.g., the yarn monitoring device, etc.) at an inappropriate time. In other words, the yarn can be guided to the yarn winding position at the time when the pulling out by the yarn pull-out section is completed.

The above-mentioned yarn winding device may further include a moving unit. The moving unit moves the restricting lever between a restricting position that restricts the yarn from being guided to the yarn winding position and an introduction position that allows the yarn to be guided to the yarn winding position. This allows the restricting lever to be switched between a state that restricts the introduction of the yarn to the yarn winding position and a state that allows the yarn to be guided to the yarn winding position.

In the above yarn winding device, the moving unit may move the yarn ejection unit between a yarn guide position when guiding the yarn supplied from the supply unit to the yarn storage device, and a yarn pull-out position when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit. This allows the movement of the regulating lever and the movement of the yarn ejection unit to be performed simultaneously by the moving unit.

In the above-mentioned yarn winding device, the yarn guide pipe may be detachable from the yarn guide section. This makes it easier to maintain the yarn winding device.

In the above yarn winding device, the yarn guide pipe may have an entrance and a bent portion. The entrance draws the yarn ejected from the yarn ejection portion into an internal guide path. The bent portion changes the moving direction of the yarn that has been sucked into the guide path. In this case, the cross-sectional area of the guide path from the bent portion of the yarn guide pipe to the yarn capture portion side may be larger than the cross-sectional area of the guide path from the entrance to the bent portion. This prevents the yarn from being pulled out from the middle of the yarn guide pipe.

In the above yarn winding device, the yarn guide pipe may have a flat side surface. This improves visibility of the yarn winding device.

In the above-mentioned yarn winding device, the yarn guide pipe may have a slit that guides the yarn from the guide path toward the yarn capture section, and a fin that stands upright from the slit. This makes it possible to prevent the yarn from being guided away from the yarn winding position.

In the above yarn winding device, the yarn guide pipe may have a slit that guides the yarn from the guide path to the yarn capture section. In this case, the slit may be parallel to the extension direction of the yarn guide pipe. This makes it easier to manufacture the yarn guide pipe.

In the above-mentioned yarn winding device, the supply unit may supply the yarn unwound from the yarn supply bobbin. This allows the yarn to be properly guided to the yarn winding position in an automatic winder having a yarn storage device.

In the above-mentioned yarn winding device, the supply unit may supply the yarn spun by air force. This allows the yarn to be properly guided to the yarn winding position in an air spinning machine having a yarn storage device.

In the above-mentioned yarn winding device, the supply unit may supply the yarn spun by the rotational force of the rotor. This allows the yarn to be properly guided to the yarn winding position in an open-end spinning machine having a yarn storage device.

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

FIG. 2 is a diagram showing the configuration of an automatic winder. FIG. 2 is a diagram showing the configuration of a winder unit. FIG. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and a detection unit. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and the light-emitting unit. FIG. 4 is a diagram showing the positional relationship between the yarn pooling device and the detection unit. FIG. 4 is a diagram showing a detailed configuration of a moving unit. 13 is a diagram showing a state in which a first arm rotates in accordance with rotation of a cam. FIG. FIG. 4 is a diagram showing the overall configuration of a thread guide pipe. FIG. FIG. 6 is a flowchart showing a package forming operation in the winder unit. FIG. 4 is a diagram showing a state in which the yarn is arranged at the yarn winding position. FIG. 13 is a diagram showing a state in which the movement of the yarn is restricted by the restricting lever.

1. First embodiment (1) Automatic winder The first embodiment will be described in detail below. In the description of the drawings, the same or corresponding elements are given the same reference numerals, and duplicated explanations will be omitted. "Upstream" and "downstream" respectively mean upstream and downstream in the running direction of the yarn.

The automatic winder 1 will be described with reference to Figure 1. Figure 1 is a diagram showing the configuration of the automatic winder 1. The automatic winder 1 includes a plurality of winder units 2 (an example of a yarn winding device) arranged side by side, a machine control device 3, a yarn supplying bobbin supply device 4, and a doffing device 5. The automatic winder 1 is also provided with a blower box (not shown).

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

The machine control device 3 is configured to be able to communicate with each winder unit 2. The operator of the automatic winder 1 can centrally manage the multiple winder units 2 by appropriately operating the machine control device 3. The machine control device 3 controls the operation of the yarn supplying 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 supplying device 4 supplies the yarn supplying bobbins 21 set on the transport tray 26 to each of the multiple winder units 2.

When the package 30 in the winder unit 2 becomes full (a specified amount of yarn Y is wound), the doffing device 5 travels to the position of the winder unit 2 and removes the full package 30. The doffing device 5 sets a winding bobbin 22 on which yarn Y is not wound to the winder unit 2 from which the package 30 has been removed.

(2) Winder Unit (2-1) General Configuration of Winder Unit The configuration of the winder unit 2 will be described below. First, the general configuration of the winder unit 2 will be described with reference to Fig. 2. Fig. 2 is a diagram showing the configuration of the winder unit 2. The winder unit 2 includes a yarn supplying unit 6 (an example of a supplying unit), a yarn pooling device 40, a yarn guiding unit 7, a package forming unit 8 (an example of a winding unit), and a control unit 25.

The yarn supplying section 6 is configured to support the yarn supplying bobbin 21 set on the transport tray 26 at a predetermined position and to be able to unwind the yarn Y from the yarn supplying bobbin 21. When all the yarn Y has been unwound from the yarn supplying bobbin 21, the yarn supplying section 6 ejects the core tube of the yarn supplying bobbin 21 on which the yarn Y is not wound, and receives a new yarn supplying bobbin 21 from the yarn supplying bobbin supply device 4.

The yarn storage device 40 is disposed in the middle of the yarn travel path formed between the yarn supplying section 6 and the package forming section 8. The yarn storage device 40 is provided in a position upstream of the wax application device 70 in the travel direction of the yarn Y. The yarn storage device 40 winds and temporarily stores the yarn Y unwound in the yarn supplying section 6. The yarn storage device 40 supplies the stored yarn Y to the package forming section 8.

The yarn guide section 7 is disposed between the yarn supply section 6 and the yarn storage device 40, and guides the yarn Y supplied from the yarn supply section 6 between the yarn supply section 6 and the yarn storage device 40. When the yarn Y is broken between the yarn supply section 6 and the yarn storage device 40, the yarn guide section 7 joins the end of the yarn Y present on the yarn supply section 6 side with the end of the yarn Y present on the yarn storage device 40 side.

The package forming unit 8 winds the yarn Y supplied from the yarn storage device 40 onto a winding bobbin 22 to form a package 30. The package forming unit 8 has a cradle 23 and a traverse drum 24. The cradle 23 rotatably supports the winding bobbin 22 (or the package 30). The cradle 23 is configured so that the outer peripheral surface of the package 30 it supports can come into contact with the outer peripheral surface of the traverse drum 24.

The traverse drum 24 drives the winding bobbin 22 while traversing the yarn Y. In detail, the traverse drum 24 is driven to rotate by a drive source (e.g., an electric motor, etc.) not shown, and rotates while in contact with the outer peripheral surface of the winding bobbin 22 or the package 30, thereby rotating the winding bobbin 22. This allows the yarn Y stored in the yarn storage device 40 to be unwound and pulled out, and wound onto the winding bobbin 22.

A traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and this traverse groove allows the yarn Y to be traversed at a predetermined width. With the above configuration, the yarn Y can be wound around the winding bobbin 22 while being traversed to form a package 30 of a predetermined shape.

The control unit 25 is a computer system equipped with 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 component of the winder unit 2 through cooperation between the hardware and software. The control unit 25 is configured to be able to communicate with the machine control device 3. This allows the operation of the multiple winder units 2 equipped in the automatic winder 1 to be centrally managed by the machine control device 3.

The winder unit 2 has a wax applicator 70. The wax applicator 70 is disposed between the yarn storage device 40 and the package forming section 8. The wax applicator 70 applies wax to the yarn Y traveling from the yarn storage device 40 toward the package forming section 8.

(2-2) Yarn Storage Device Next, a detailed configuration of the winder unit 2 will be described. First, a detailed configuration of the yarn storage device 40 will be described with reference to FIG. 2 and FIG. 3. FIG. 3 is an enlarged view of the yarn storage device 40. The yarn storage device 40 includes a storage roller 41 around which the yarn Y can be wound, a drive motor 45 that rotates and drives the storage roller 41, a cover 47, and a detection unit 53. The storage roller 41 winds the yarn Y around a storage area A on the outer circumferential surface 41d of the storage roller 41 to temporarily store the yarn Y. The storage roller 41 is supported on the machine base (frame) of the automatic winder 1 so as to be rotatable about a rotation axis C1 that is slightly inclined with respect to the horizontal direction. As shown in FIG. 2 and FIG. 3, tapered portions 41a and 41b whose diameters increase as they approach the ends are formed on both ends of the storage roller 41 in the axial direction. The portion between the two tapered portions 41a, 41b is a cylindrical portion 41c with a constant diameter, and its outer circumferential surface 41d is a storage area A around which the yarn Y is wound. The outer circumferential surface 41d of the cylindrical portion 41c is mirror-finished. The two tapered portions 41a, 41b on both ends prevent the yarn Y wound around the cylindrical portion 41c from falling off.

A ring member 42 is wound around the outer circumferential surface 41d of the cylindrical portion 41c of the storage roller 41. The ring member 42 is formed in a circular ring shape from, for example, rubber. The ring member 42 is attached to the boundary between the cylindrical portion 41c and the tapered portion 41b at the tip side. The ring member 42 surrounds the yarn Y drawn from the storage roller 41 by the package forming unit 8, and contacts the yarn Y to provide resistance. The ring member 42 is attached to the cylindrical portion 41c by an elastic force that tightens it radially inward. The ring member 42 provides resistance to the yarn Y drawn from the storage roller 41 by the elastic force. The ring member 42 provides an appropriate tension to the yarn Y drawn from the storage roller 41, stabilizing the unwinding of the yarn Y from the storage roller 41.

In the outer peripheral surface 41d of the storage roller 41, a first recess (recess) 43a is provided in a region that spans the mounting position of the ring member 42 in a direction along the rotation axis C1. In other words, when viewed from the radial outside of the storage roller 41, the first recess 43a is provided so as to pass through the mounting position of the ring member 42 and intersects with the mounting position, and a part of the first recess 43a overlaps with the mounting position. Here, the first recess 43a forms a groove portion that extends in a direction along the rotation axis C1 from one end to the other end of the storage roller 41. The first recess 43a has, for example, the same cross-sectional shape in its longitudinal direction and is formed in a substantially rectangular cross-section. The outer peripheral surface 41d of the storage roller 41 is further provided with a second recess (recess) 43b. The second recess (recess) 43b is a recess (so-called downgage) that is provided so that a recess (so-called sink mark) is not formed when molding a boss or reinforcing rib for embedding a sensor magnet on the inner circumferential surface 41g of the cylindrical portion 41c.

The drive motor 45 rotates the storage roller 41 in a direction to wind the yarn Y from the yarn supplying section 6. The drive motor 45 can also rotate the storage roller 41 in a direction opposite to the winding direction. The drive motor 45 is a position-controllable motor such as a DC brushless motor, a stepping motor, or a servo motor.

From the tapered portion 41b on the other end side of the storage roller 41 (the upstream side of the storage roller 41), the yarn Y wound around the storage roller 41 is pulled out and sent downstream (towards the package forming section 8). At the tapered portion 41b, the yarn Y on the storage roller 41 is pulled out downstream via a pull-out guide 37 located on an extension of the rotation axis C1 of the storage roller 41. The yarn Y wound around the storage roller 41 is unwound through the gap with the ring member 42, which provides an appropriate tension to the unwound yarn Y.

The detection unit 53 is disposed near the outer circumferential surface 41d of the cylindrical portion 41c of the storage roller 41. For example, the detection unit 53 can detect when the yarn Y of the storage roller 41 is equal to or greater than a predetermined upper limit amount, and when it is less than a predetermined lower limit amount. The detection unit 53 may detect from the upper limit amount to the lower limit amount as a detection range. The detection range may be a wider range including a portion exceeding the upper limit amount and a portion below the lower limit amount. This makes it possible to detect, for example, an excess amount relative to the upper limit value. In this embodiment, it is detected from within the detection range that the yarn Y of the storage roller 41 is equal to or greater than a predetermined upper limit amount, and when it is less than a predetermined lower limit amount. The above terms "above" and "below" can be appropriately expressed as "exceed" and "below". The detection result by the detection unit 53 is acquired by the control unit 25. The control unit 25 controls the drive motor 45 based on the detection result of the detection unit 53 so that the storage amount (wrap amount) of the storage roller 41 falls between the upper limit amount and the lower limit amount.

The detection unit 53 detects the yarn Y wound around the outer peripheral surface 41d of the storage roller 41. As shown in Figs. 4A to 4C, the detection unit 53 forms a detection unit 50 together with a light-emitting unit 55 that emits light toward the storage roller 41. That is, the detection unit 50 is configured to include the detection unit 53 and the light-emitting unit 55. The detection unit 53 and the light-emitting unit 55 are housed in a housing 51 and fixed to the machine base of the automatic winder 1. Fig. 4A is a diagram showing the positional relationship between the yarn storage device 40 and the detection unit 53. Fig. 4B is a diagram showing the positional relationship between the yarn storage device 40 and the light-emitting unit 55. Fig. 4C is a diagram showing the positional relationship between the yarn storage device 40 and the detection unit 50.

The detection unit 53 has a line sensor 53A that detects the presence or absence of yarn Y in a straight section ST1 that connects between an upstream end 41f in the running direction of the yarn Y and a downstream end 41e in the running direction of the yarn Y in the storage area A formed on the outer circumferential surface 41d of the cylindrical portion 41c, and a lens 53B that reduces the incident light. An example of the line sensor 53A is a CCD image sensor or a CMOS image sensor that acquires the amount of light using photodiodes arranged in a row. The line sensor 53A receives light through a lens 53B that reduces the incident light. In this embodiment, the line sensor 53A is provided so that the extension direction of the straight section ST1 is parallel to the extension direction of the rotation axis C1, but the line sensor 53A may be provided so that the extension direction of the straight section ST1 intersects with the extension direction of the rotation axis C1.

The light-emitting unit 55 has two light sources 55B, 55B, and an optical waveguide 55C that converts the light emitted from the two light sources 55B, 55B into surface emission and emits it toward the storage roller 41. Some of the components of the optical waveguide 55C include an acrylic plate that guides the light and a diffusion plate that diffuses the light. An example of the two light sources 55B, 55B is an LED (Light Emitting Diode), which is provided on the LED board 55A. The number of light sources is not limited to two.

The line sensor 53A is disposed at a position such that light from the light-emitting unit 55 that reflects the outer peripheral surface 41d of the storage roller 41 is not incident, and light from the light-emitting unit 55 that reflects the yarn Y stored in the storage roller 41 is incident. For example, as shown in FIG. 4C, the line sensor 53A emits light at an irradiation angle θ in the range of 0° to 30°. "The line sensor 53A is disposed so that light from the light-emitting unit 55 that reflects the outer peripheral surface 41d of the storage roller 41 is not incident" means that the light emitted from the light-emitting unit 55 at such an angle is totally reflected by the outer peripheral surface 41d of the storage roller 41, and the line sensor 53A is disposed at a position such that the reflected light is not incident.

Here, one of the straight lines perpendicular to the rotation axis C1 is set as a first straight line L1, and one of the straight lines parallel to the first straight line L1 and tangent to the outer peripheral surface 41d of the storage roller 41 is set 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 approximately parallel to the first straight line L1. In other words, light is incident on the line sensor 53A from a direction approximately parallel to the first straight line L1.

The cover 47 is provided so as to face a portion of the outer peripheral surface 41d of the storage roller 41. The cover 47 is provided at least partially in the traveling direction of the light from the light emitting unit 55 reflected by the outer peripheral surface 41d of the storage roller 41.

In addition, even if the cover 47 is not provided, the periphery of the yarn storage device 40 may be configured so that no structural parts that reflect light in the direction of travel of the light from the light emitting unit 55 are arranged.

2, a detailed configuration of the yarn guiding unit 7 that guides the yarn Y between the yarn supplying unit 6 and the yarn pooling device 40 will be described. The yarn guiding unit 7 is disposed in the yarn path (yarn traveling path) of the yarn Y, and includes an unwinding assisting device 10, a lower yarn feeler 11, a tension applying unit 12, a capturing device 13, a yarn joining device 14, a yarn monitoring device 16, a yarn spouting unit 60, and a yarn guiding pipe 80.

The unwinding assist device 10 assists in the unwinding of the yarn Y by bringing a movable member 27 into contact with a balloon formed above the yarn supplying bobbin 21 as the yarn Y unwound from the yarn supplying bobbin 21 swings around and appropriately controlling the size of the balloon.

The lower thread feeler 11 is disposed downstream of the unwinding assist device 10 and in close proximity to the unwinding assist device 10. The lower thread feeler 11 determines whether or not the thread Y supplied from the unwinding assist device 10 is present.

The tension applying unit 12 applies a predetermined tension to the running 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 a tension sensor (not shown). The tension applying unit 12 is configured as a gate type in which movable comb teeth are arranged relative to fixed comb teeth, and applies a predetermined resistance by running the yarn Y between the comb teeth. The movable comb teeth are configured to be movable, for example, by a solenoid, so that the comb teeth are in an interlocking state or a released state. This allows the tension applying unit 12 to adjust the tension applied to the yarn Y. The configuration of the tension applying unit 12 is not particularly limited, and may be, for example, a disk-type tension applying unit.

The capture device 13 (an example of a yarn capture section) is disposed between the yarn joining device 14 and the yarn supply section 6, more specifically, downstream of the tension applying section 12. The capture device 13 has a first capture section 13A and a second capture section 13B. In this embodiment, the first capture section 13A and the second capture section 13B are integrated and configured as a single component. Each of the first capture section 13A and the second capture section 13B is connected to a negative pressure source (not shown).

The first capture section 13A is configured as a cylindrical member with an opening at the tip. The first capture section 13A generates a suction air flow during yarn splicing, and sucks in the internal space (guide path) of the yarn guide pipe 80 (described later), thereby sucking in and capturing the yarn Y on the yarn storage device 40 side that is ejected from the yarn ejection section 60.

The second capturing section 13B is configured as a cylindrical member with an opening formed at the tip. The second capturing section 13B is provided so as to be able to swing. The second capturing section 13B swings between a capturing position (position shown by a solid line in FIG. 2) where it captures the yarn Y supplied from the unwinding assist device 10, and a guide position (position shown by a dashed line in FIG. 2) where it guides the yarn Y to the yarn joining device 14. The capturing position may also be a standby position of the second capturing section 13B.

When in the capturing position, the second capturing unit 13B is close to the yarn path downstream of the lower yarn feeler 11, and generates a suction air flow at its tip to suck in and capture the yarn end from the yarn supplying bobbin 21. When the yarn Y is cut by the cutter 15, the second capturing unit 13B sucks in and captures the yarn end of the cut yarn Y on the yarn supplying bobbin 21 side. The second capturing unit 13B may also be configured to generate a suction air flow at its tip to suck in and remove any fly lint or the like adhering to the traveling yarn Y.

When the yarn Y is captured by the second capturing part 13B, immediately after a new yarn supplying bobbin 21 is supplied to the yarn supplying part 6, an auxiliary blowing part 28 is provided to blow the yarn end to a position downstream of the lower yarn feeler 11 (the tip of the second capturing part 13B).

The auxiliary blowing section 28 blows compressed air into the hollow-shaped transport tray 26 and the yarn supplying bobbin 21, creating an air flow at the tip of the yarn supplying bobbin 21 that blows the yarn Y of the yarn supplying bobbin 21 toward the lower thread feeler 11. When a newly supplied yarn supplying bobbin 21 is supported by the yarn supplying section 6, the auxiliary blowing section 28 operates to reliably send the yarn end of the yarn supplying bobbin 21 toward the lower thread feeler 11.

The yarn joining device 14 joins the divided yarn Y. When the yarn Y is cut by the cutter 15 after the yarn monitoring device 16 detects a yarn defect, when the yarn Y is cut while being unwound from the yarn supplying bobbin 21, or when the yarn Y is broken between the yarn supplying bobbin 21 and the yarn storage device 40, such as when the yarn Y is broken, or when the yarn supplying bobbin 21 is replaced, the yarn joining device 14 joins the end of the yarn Y on the yarn supplying bobbin 21 side to the end of the yarn Y on the yarn storage device 40 side. The yarn joining device 14 is disposed at a position slightly removed from the yarn path. The yarn joining device 14 can join the introduced yarn ends to make the yarn Y continuous. The yarn joining device 14 can be a device that uses a fluid such as compressed air or a mechanical device.

The yarn monitoring device 16 detects yarn defects such as slub and foreign matter contamination by monitoring the thickness of the yarn Y with an appropriate sensor. A cutter 15 is disposed in a position adjacent to the yarn monitoring device 16 on the upstream side of the yarn monitoring device 16. The cutter 15 immediately cuts the yarn Y when the yarn monitoring device 16 detects a yarn defect. The cutter 15 and the yarn monitoring device 16 are housed in a common housing 19. The housing 19 that houses the yarn monitoring device 16 is disposed downstream of the yarn joining 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 to form the package 30, and a yarn guide slit SL (Fig. 5) that guides the yarn Y pulled out from the yarn guide pipe 80 to this hole H. The hole H is structured to facilitate the movement of the yarn Y from the yarn supplying unit 6 side to the yarn storage device 40 side, but to make it difficult for the yarn Y to move from the yarn storage device 40 side to the yarn supplying unit 6 side.

The yarn ejection unit 60 is disposed near the tapered portion 41a on one end side of the storage roller 41 (the upstream side of the storage roller 41), and is composed of a thin cylindrical member through which the yarn Y can pass. The mouth of the yarn ejection unit 6 on the yarn supplying unit 6 side can eject compressed air in the direction from the yarn storage device 40 to the yarn supplying unit 6. If the yarn Y becomes disconnected between the yarn supplying bobbin 21 and the yarn storage device 40, the yarn ejection unit 60 captures the end of the yarn Y on the yarn storage device 40 side by suction and blows it into the guide path of the yarn guide pipe 80.

On the other hand, during normal yarn winding, the yarn ejection section 60 guides the yarn Y supplied from the yarn supply section 6 to the tapered section 41a on one end side of the storage roller 41. When the drive motor 45 is driven to rotate the storage roller 41 in one direction, the yarn Y guided to the tapered section 41a on one end side of the storage roller 41 by the yarn ejection section 60 is sequentially wound around the cylindrical section 41c while pushing up the previous yarn layer from one end side (upstream side). As a result, the yarn Y already wound around the outer circumferential surface 41d of the storage roller 41 is pushed by the newly wound yarn Y and is sequentially sent to the other end side (downstream side). As a result, the yarn Y is aligned in a spiral shape on the outer circumferential surface of the cylindrical section 41c of the storage roller 41 and regularly wound from one end side to the other end side.

As will be described in detail later, the yarn ejection unit 60 can be moved by the moving unit 90 between an optimal position (called the yarn guide position) for guiding the yarn Y supplied from the yarn supply unit 6 to the storage roller 41, and an optimal position (called the yarn pull-out position) for drawing out the yarn end of the yarn Y stored in the yarn storage device 40 by suction and guiding it to the yarn joining device 14 (the guide path of the yarn guide pipe 80).

The yarn guide pipe 80 is provided between the yarn spouting section 60 and the first capture section 13A, and guides the yarn Y spouted from the yarn spouting section 60 to the first capture section 13A. The yarn guide pipe 80 is a curved cylindrical member, and has an opening at each end in the longitudinal direction. One opening of the yarn guide pipe 80 is arranged close to the mouth of the yarn spouting section 6 on the yarn supply section 6 side. The other opening is arranged facing the first capture section 13A. In other words, one opening of the yarn guide pipe 80 is the entrance IN (Figure 8) of the yarn Y spouted from the yarn spouting section 60. On the other hand, the other opening is the exit OUT (Figure 8) of the yarn Y.

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

When the yarn Y is broken between the yarn supply bobbin 21 and the yarn storage device 40, the yarn guide pipe 80 guides the yarn Y blown into the guide path by the yarn ejection unit 60 along the guide path to the first capture unit 13A, and the guided yarn Y is captured by the first capture unit 13A. Since the yarn guide pipe 80 has a slit formed along its entire length that penetrates to the guide path, the yarn guide pipe 80 can pull the yarn Y captured by the first capture unit 13A out of the guide path of the yarn guide pipe 80 and guide it toward the yarn joining device 14.

(2-4) Moving Section Hereinafter, the detailed configuration of the moving section 90 that moves the yarn spouting section 60 will be described with reference to Fig. 5. Fig. 5 is a diagram showing the detailed configuration of the moving section 90. The moving section 90 has a cam 91, a first arm 92, a second arm 93, a position sensor 94, and a regulating lever 95. The cam 91 is provided on a casing CH so as to be rotatable around a first axis A1. The casing CH is fixed onto a housing 19 that houses the cutter 15 and the yarn monitoring device 16.

A first pulley 91A is fixed to the cam 91. A belt 91B is looped around the first pulley 91A. A second pulley 91C is looped around the side of the belt 91B opposite to the side around which the first pulley 91A is looped. The second pulley 91C is fixed to the output shaft of a motor 91D. The rotation of the output shaft of the motor 91D is transmitted to the cam 91 by the second pulley 91C, the belt 91B, and the first pulley 91A, causing the cam 91 to rotate around the first axis A1. The rotation of the motor 91D is controlled by the control unit 25.

The distance of the side surface PH of the cam 91 against which the first arm 92 abuts to the first axis A1 (i.e., the radius of the cam 91) increases as the side surface PH moves away from the reference position (called the origin O) in the counterclockwise direction in Figure 5 from the origin O.

The first arm 92 is an elongated member. One end of the first arm 92 abuts against the outer circumference of the cam 91. Meanwhile, the other end of the first arm 92 is fixed to the housing CH so as to be rotatable around the 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 with distance from the origin O, the distance between the abutment 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 with the rotation of the cam 91, so that the first arm 92 rotates around the second axis A2 with the rotation of the cam 91 as shown in FIG. 6. FIG. 6 is a diagram showing the state in which the first arm 92 rotates with the rotation of the cam 91.

The second arm 93 is a long, thin member, and the yarn ejection part 60 is fixed to one end of the second arm 93. Meanwhile, the other end of the second arm 93 is attached to the first arm 92 so as to be rotatable around the second axis A2. As a result, the second arm 93 rotates around the second axis A2 in accordance with the rotation of the first arm 92. As the second arm 93 rotates around the second axis A2, the yarn ejection part 60 fixed to one end of the second arm 93 moves.

The position sensor 94 detects whether one end of the first arm 92 is in contact with 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 to be in contact with the origin O of the cam 91, the control unit 25 rotates the cam 91 so that one end of the first arm 92 enters the semicircular portion on the origin O side of the cam 91, and when the second arm 93 is detected by the position sensor 94, it determines that one end of the first arm 92 is in contact with the position of the origin O of the cam 91. The position sensor 94 is, for example, a magnet sensor.

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

Specifically, as shown in FIG. 5, when one end of the first arm 92 is in contact with the origin O of the cam 91, the yarn ejection section 60 is positioned to guide the yarn Y from the yarn supply section 6 to the yarn storage device 40 (referred to as the yarn guide position). On the other hand, the regulating lever 95 is positioned away from the yarn guide slit SL of the yarn monitoring device 16. As described below, when the regulating lever 95 is in a position away from the yarn guide slit SL, the yarn Y pulled out from the yarn guide pipe 80 is guided to the hole H of the yarn monitoring device 16 and guided to a position where the yarn Y can be wound onto the winding bobbin 22 (referred to as the yarn winding position). Therefore, the position of the regulating lever 95 when it is away from the yarn guide slit SL is referred to as the introduction position.

More specifically, the yarn winding position refers to the position of the yarn Y in a state where the yarn Y is guided in a straight line from the yarn ejection section 60 to the yarn supply section 6 in the shortest distance, as shown in FIG. 2.

On the other hand, as shown in FIG. 6, when one end of the first arm 92 is in contact with the middle position (called the first outer peripheral position PH1) of the side surface PH of the cam 91, the yarn ejection section 60 is positioned to pull out the end of the yarn Y stored in the yarn storage device 40 and eject it toward the yarn supply section 6 (called the yarn pull-out position). On the other hand, the regulating lever 95 is positioned with a part of it hanging on the yarn guide slit SL of the yarn monitoring device 16. As will be described later, when a part of the regulating lever 95 is hanging on the yarn guide slit SL, the movement of the yarn Y pulled out from the yarn guide pipe 80 is restricted by the regulating lever 95, and the yarn Y is not guided to the hole H of the yarn monitoring device 16. That is, the regulating lever 95 at this time restricts the yarn Y pulled out from the yarn guide pipe 80 from being guided to the hole H. Therefore, the position of the regulating lever 95 when a part of the regulating lever 95 is hanging on the yarn guide slit SL is called the regulating position.

(2-5) Yarn Guide Pipe Hereinafter, the specific configuration of the yarn guide pipe 80 that guides the yarn Y spouted from the yarn spouting part 60 to the first catching part 13A will be described with reference to Figures 7 to 9. Figure 7 is a diagram showing the overall configuration of the yarn guide pipe 80. Figure 8 is a front view of a cylindrical member 81. Figure 9 is a side view of the cylindrical member 81. The yarn guide pipe 80 has a cylindrical member 81, a drawing slit 82 (an example of a slit), and a fin 83.

The cylindrical member 81 is a hollow cylindrical member. The internal space of the cylindrical member 81 forms a guide path that guides the yarn Y spouted from the yarn spouting section 60 to the first capturing section 13A. One end of the cylindrical member 81 is located near the yarn spouting section 60 and is an entrance IN that introduces the yarn Y spouted from the yarn spouting section 60 into the guide path. The other end of the cylindrical member 81 is located near the first capturing section 13A and is an exit OUT from which the yarn Y guided along the guide path jumps out toward the first capturing section 13A.

The cylindrical member 81 has a generally U-shape. Specifically, the cylindrical member 81 first extends from the inlet IN to the outside of the thread guide section 7, then changes its extension direction at the first bent section 81a and extends downward (upstream), and then changes its extension direction at the second bent section 81b and extends to the first capture section 13A.

As shown in FIG. 9, an area expansion section 81c is provided from the first bend 81a to the outlet OUT on the side of the cylindrical member 81 facing each component of the winder unit 2. The cross-sectional area of the guide path in the portion of the cylindrical member 81 where the area expansion section 81c is provided (i.e., the portion from the first bend 81a to the first capture section 13A side) is larger than the cross-sectional area of the guide path in the portion where the area expansion section 81c is not provided (i.e., the portion from the inlet IN to the first bend 81a).

By configuring the guide path of the cylindrical member 81 as described above, the gas flow emitted from the yarn ejection section 60 and the gas flow generated in the guide path by suction at the outlet OUT generate a gas flow along the cylindrical member 81 on the outside of the guide path, while on the inside of the guide path (the side where the pull-out slit 82 is provided) a gas flow toward the inside of the guide path (i.e., a gas flow in the direction from the pull-out slit 82 to the guide path) can be generated. As a result, before the yarn Y is guided to the first capture section 13A, the yarn Y is no longer pulled out of the pull-out slit 82 halfway through the cylindrical member 81, so that the yarn Y can be properly guided to the yarn winding position.

As shown in Figures 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 viewed from the outside to the inside of the winder unit 2 is smaller than the width of the tubular member 81 when viewed from the side. This improves the visibility of the winder unit 2. In other words, it makes it easier to see each component of the winder unit 2 from the outside of the winder unit 2.

The tubular member 81 is further provided with a pair of rotating and fixing members 84 and a snap member 85. One of the pair of rotating and fixing members 84 is fixed to the housing 19 near the inlet IN of the tubular member 81 so as to be rotatable about an axis. The other of the pair of rotating and fixing members 84 is fixed to the attachment portion 7a near the outlet OUT of the tubular member 81 so as to be rotatable about an axis. By providing the pair of rotating and fixing members 84 on the tubular member 81, the tubular member 81 is rotatable about an axis in the thread guide portion 7.

The snap member 85 is a U-shaped member provided near the inlet IN of the tubular member 81. The snap member 85 allows the tubular member 81 to be attached to and detached from the thread guide section 7. Specifically, the snap member 85 can fix (attach) the tubular member 81 to the thread guide section 7 by clamping a protruding member 86 provided on the housing 19 between the arms that form the U-shape. On the other hand, the tubular member 81 can be removed from the thread guide section 7 by releasing the clamping of the snap member 85 by the protruding member 86.

As described above, the cylindrical member 81 is designed to be easily removable from the thread guide section 7, making it easier to access each component of the winder unit 2. As a result, maintenance of the winder unit 2 becomes easier.

The pull-out slit 82 is formed along the extension direction of the cylindrical member 81 on the side of the cylindrical member 81 facing each component of the winder unit 2, and connects the guide path inside the cylindrical member 81 to the external space. The pull-out slit 82 pulls out the yarn Y captured by the first capturing part 13A from the guide path to the first capturing part 13A side (i.e., toward the yarn winding position).

As shown in FIG. 8, the pull-out slit 82 is provided parallel to the extension direction of the tubular member 81. As described above, in this embodiment, the tubular member 81 is provided with the area enlargement portion 81c, so that the thread Y is not pulled out from the pull-out slit 82 before being captured by the first capture portion 13A. For this reason, in the tubular member 81 of this embodiment, it is not necessary to form the pull-out slit 82 in a twisted state with respect to the extension direction of the tubular member 81. Therefore, the shape of the pull-out slit 82 can be a straight slit (a slit extending parallel to the extension direction of the tubular member 81), which is easier to manufacture than a twisted shape.

The fins 83 are erected from the pull-out slit 82 toward the side facing each component of the winder unit 2. The fins 83 extend linearly along the linear pull-out slit 82 in the vertical direction. When the yarn Y is pulled out from the guide path toward the outside (yarn winding position) by the pull-out slit 82, the fins 83 guide the yarn Y to be pulled out along the pull-out slit 82 (i.e., the extension direction of the tubular member 81). By providing the fins 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 Y is pulled out from the pull-out slit 82 of the yarn guide pipe 80 and guided to the yarn joining device 14, it is guided to an appropriate position.

(3) Operation of the 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 in the winder unit 2. In this initial operation, the yarn spouting part 60 is moved to the origin position. Specifically, as shown in FIG. 5, the control part 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, thereby moving the regulating lever 95 to the introduction position and moving the yarn spouting part 60 to the yarn guiding position. In this way, the origin position of the regulating lever 95 is the introduction position, and the origin position of the yarn spouting part 60 is the yarn guiding position.

After the initial operation, the winder unit 2 starts forming 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 in the winder unit 2. FIG. 10 shows a flowchart for forming one package 30.

When the formation of the package 30 starts, 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, and moves the regulating lever 95 to the introduction position and the yarn spouting unit 60 to the yarn guide position (step S1). As described above, in the initial state, the regulating lever 95 is located at the introduction position and the yarn spouting unit 60 is located at the yarn guide position. Therefore, when the package 30 is first formed after the winder unit 2 is started, the control unit 25 does not move the regulating lever 95 and the yarn spouting unit 60.

By moving the yarn spouting unit 60 to the yarn guiding position, the yarn spouting unit 60 can guide the yarn Y supplied from the yarn supplying unit 6 toward the yarn storage device 40. At this time, the regulating lever 95 has moved to an introduction position that allows the yarn Y to be guided to the yarn guide slit SL and hole H (i.e., the yarn winding position). As a result, as shown in FIG. 11, the movement of the yarn Y supplied from the yarn supplying unit 6 is not regulated by the regulating lever 95, and the yarn Y is guided to the yarn guide slit SL and hole H. In other words, the yarn Y supplied from the yarn supplying unit 6 is guided to the yarn winding position. FIG. 11 is a diagram showing the state in which the yarn Y is arranged at the yarn winding position.

After the regulating lever 95 is moved to the introduction position and the yarn ejection unit 60 is moved to the yarn guide position to allow the yarn Y to be guided to the yarn winding position, yarn winding is started to form the package 30 (step S2). In step S2, the yarn Y released from the yarn supplying bobbin 21 is guided by the yarn guide unit 7 to the yarn storage device 40 while placed at the yarn winding position, and is temporarily stored in the yarn storage device 40 (storage roller 41). The yarn Y stored in the yarn storage device 40 is wound onto the winding bobbin 22 to form the package 30.

When the yarn Y starts to be stored in the yarn storage device 40 in step S2, the control unit 25 monitors the tension of the yarn Y guided by the yarn guide unit 7, and may stop the rotation of the storage roller 41 or cut the yarn Y if the tension of the yarn Y exceeds a predetermined threshold. This prevents the yarn Y from being cut due to a loss of tension at the beginning of winding immediately after thread joining, and thus prevents the occurrence of a passing yarn.

During winding of the yarn Y, the control unit 25 determines in step S3 whether or not a break in the yarn Y has occurred due to cutting of the yarn Y by the cutter 15, breaking of the yarn Y while being unwound from the yarn supplying bobbin 21, replacement of the yarn supplying bobbin 21, etc. If a break in the yarn Y has not occurred ("No" in step S3), the operation of forming the package 30 proceeds to step S8.

On the other hand, if the yarn Y breaks ("Yes" in step S3), the control unit 25 stops winding the yarn Y onto the winding bobbin 22 in step S4. Then, in step S5, the control unit 25 rotates the cam 91 so that one end of the first arm 92 abuts against the first outer periphery position PH1 of the side surface PH of the cam 91, as shown in FIG. 6, to move the regulating lever 95 to the regulating position and move the yarn ejection unit 60 to the yarn pull-out position.

By moving the yarn ejection unit 60 to the yarn pull-out position, the yarn ejection unit 60 can pull out the end of the yarn Y from the yarn storage device 40 and eject it toward the yarn guide pipe 80. At this time, the regulating lever 95 moves to a regulating position that regulates the movement of the yarn Y to the yarn guide slit SL and hole H. As a result, as shown in FIG. 12, the yarn Y that is pulled out of the yarn storage device 40 by the yarn ejection unit 60 and captured by the first capture unit 13A and then exits the yarn guide pipe 80 is restricted from moving to the yarn guide slit SL and hole H by the regulating lever 95. In other words, the yarn Y that exits the yarn guide pipe 80 cannot move to the yarn guide slit SL and hole H and is not guided to the yarn winding position. FIG. 12 is a diagram showing the state in which the movement of the yarn Y is regulated by the regulating lever 95.

After the yarn ejection unit 60 is moved to the yarn pull-out position, the yarn ejection unit 60 pulls out the end of the yarn Y on the yarn storage device 40 side from the yarn storage device 40 by sucking it inward, and blows the pulled-out yarn Y toward the yarn guide pipe 80 (step S6). As a result, the end of the yarn Y on the yarn storage device 40 side moves along the guide path in the yarn guide pipe 80 to the first capture unit 13A and is captured by the first capture unit 13A. After that, the yarn Y inside the yarn guide pipe 80 is pulled out from the pull-out slit 82 of the yarn guide pipe 80 by the suction force of the first capture unit 13A and is guided to the yarn joining device 14. In addition, the end of the yarn Y on the yarn supply unit 6 side is captured by the second capture unit 13B located at the capture position and is guided to the yarn joining device 14.

When the end of the yarn Y on the yarn storage device 40 side is guided to the yarn joining device 14, the yarn Y moves from the yarn storage device 40 side to the yarn supplying section 6 side (i.e., from downstream to upstream). As described above, the hole H of the yarn monitoring device 16 is structured so that it is difficult to move from the yarn storage device 40 side to the yarn supplying section 6 side. For this reason, when the yarn Y guided to the hole H moves from the yarn storage device 40 side to the yarn supplying section 6 side, for example, a "lump of yarn" is generated in which the yarn Y is caught in the hole H and cannot move forward in the forward direction, and the lump of yarn is retained, and may accumulate in the hole H and its vicinity. After that, when the yarn Y is guided from the yarn supplying section 6 side to the yarn storage device 40 side, the "lump of yarn" accumulated in the hole H and its vicinity may move to the yarn storage device 40 and be stored there due to the movement of the yarn Y to the yarn storage device 40 side.

Therefore, by preventing the yarn Y from being guided to the hole H by the regulating lever 95 when the yarn Y is moved from the yarn storage device 40 side to the yarn supplying section 6 side, the yarn Y will not be guided to the yarn winding position (hole H of the yarn monitoring device 16) at an inappropriate timing, for example, when the yarn Y moves from the yarn storage device 40 side to the yarn supplying section 6 side (resulting in the generation of "shavings" of the yarn Y).

After the end of the yarn Y on the yarn storage device 40 side and the end of the yarn Y on the yarn supplying section 6 side are guided to the yarn joining device 14, these ends of the yarn Y are joined by the yarn joining device 14 (step S7).

After completing the yarn splicing, the formation of the package 30 is resumed. That is, the operation of forming 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 regulating lever 95 to the introduction position, and moves the yarn ejection unit 60 to the yarn guide position. As a result, the yarn Y moving from the yarn supply unit 6 side to the yarn storage device 40 side is guided to the hole H (i.e., guided to the yarn winding position) and is guided to the yarn storage device 40 by the yarn ejection unit 60. Then, winding of the yarn Y onto the winding bobbin 22 (package 30) is resumed.

In this way, when the yarn Y moves from the yarn supplying section 6 to the yarn storage device 40, the regulating lever 95 is placed in the introduction position and the yarn Y is guided to the hole H. Since the hole H is designed to easily move the yarn Y in the direction from the yarn supplying section 6 to the yarn storage device 40, no "thread clumps" are generated even if the yarn Y moving from the yarn supplying section 6 to the yarn storage device 40 is guided to the hole H. In other words, the winder unit 2 can guide the yarn Y to the yarn winding position (yarn monitoring device 16, etc.) at the appropriate timing when the yarn Y moves from the yarn supplying section 6 to the yarn storage device 40.

During winding of the yarn Y, the control unit 25 determines in step S8 whether a specified amount of yarn Y has been wound onto the winding bobbin 22 and the formation of the package 30 has been completed. If the formation of the package 30 has not been 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 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 transported to a predetermined position. Thereafter, if another package 30 is to be formed in the winder unit 2, the above steps S1 to S11 are executed again.

2. Other embodiments Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. In particular, the multiple embodiments and modifications described in this specification can be arbitrarily combined as necessary.
(A) The process contents of each step in the flowchart of FIG. 10 showing the operation of the winder unit 2 and the order in which each step is executed can be changed as desired without departing from the spirit and scope of the invention.

(B) In the first embodiment described above, the yarn supplying section 6 supplies the yarn Y unwound from the yarn supplying bobbin 21. That is, the winder unit 2 in the first embodiment is an automatic winder. This is not limiting, and other types of yarn supplying sections 6 can also be used. For example, the yarn supplying section 6 may supply the yarn Y spun by air force. That is, the winder unit 2 may be an air spinning machine.

(C) Alternatively, the yarn supplying section 6 may supply the yarn Y spun by the rotational force of the rotor. In other words, the winder unit 2 may be an open-end spinning machine.

(D) The moving part 90 may have any configuration other than that described using Figures 5 and 6, which is capable of moving the yarn ejection part 60 and the regulating lever 95.

(E) The moving part that moves the yarn spouting part 60 and the moving part that moves the regulating lever 95 may be separate moving parts.

3. Features of the embodiment The above embodiment can also be explained as follows.
(1) A yarn winding device (e.g., winder unit 2) includes a supplying unit (e.g., yarn supplying unit 6), a yarn storage device (e.g., yarn storage device 40), a winding unit (e.g., package forming unit 8), a yarn joining device (e.g., yarn joining device 14), and a yarn guiding unit (e.g., yarn guiding unit 7). The supplying unit supplies a yarn (e.g., yarn Y). The yarn storage device stores the yarn supplied from the supplying unit. The winding unit winds up the yarn stored in the yarn storage device to form a package (e.g., package 30). When the yarn is broken between the supplying unit and the yarn storage device, the yarn joining device joins the yarn on the supplying unit side and the yarn on the yarn storage device side. The yarn guiding unit guides the yarn between the yarn storage device and the yarn joining device.

The yarn guide section has a yarn ejection section (e.g., yarn ejection section 60), a yarn capture section (e.g., capture device 13), a yarn guide pipe (e.g., yarn guide pipe 80), and a regulating lever (e.g., regulating lever 95). The yarn ejection section pulls out the yarn stored in the yarn storage device and ejects it toward the supply section. The yarn capture section is disposed between the yarn joining device and the supply section, and captures the yarn ejected by the yarn ejection section. The yarn guide pipe is disposed between the yarn ejection section and the yarn capture section, and guides the yarn ejected from the yarn ejection section to the yarn capture section. The regulating lever temporarily restricts the yarn pulled out from the yarn guide pipe from being guided to the yarn winding position when winding the yarn.

In the above-mentioned yarn winding device, the regulating lever temporarily prevents the yarn pulled out from the yarn guide pipe from being guided to the position where the yarn is wound (yarn winding position). This prevents the yarn pulled out from the yarn guide pipe from being guided to the yarn winding position (e.g., a yarn monitoring device) at an inappropriate time. In other words, the yarn can be guided to the yarn winding position at the appropriate time.

(2) The yarn winding device of (1) above may further include a moving unit (e.g., moving unit 90). The moving unit moves the restricting lever between a restricting position that restricts the yarn from being guided to the yarn winding position and an introduction position that allows the yarn to be guided to the yarn winding position. This allows the restricting lever to be switched between a state that restricts the introduction of the yarn to the yarn winding position and a state that allows the yarn to be guided to the yarn winding position.

(3) In the yarn winding device of (2) above, the moving unit may move the yarn ejection unit between a yarn guiding position when guiding the yarn supplied from the supply unit to the yarn storage device, and a yarn pull-out position when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit. This allows the movement of the regulating lever and the movement of the yarn ejection unit to be performed simultaneously by the moving unit.

(4) In the yarn winding device described above in (1) to (3), the yarn guide pipe may be detachable from the yarn guide section. This makes it easier to maintain the yarn winding device.

(5) In the yarn winding device of (1) to (4) above, the yarn guide pipe may have an entrance (e.g., entrance IN) and a bent portion (e.g., first bent portion 81a). The entrance draws the yarn ejected from the yarn ejection portion into the internal guide path. The bent portion changes the moving direction of the yarn sucked into the guide path. In this case, the cross-sectional area of the guide path from the bent portion of the yarn guide pipe to the yarn capture portion side may be larger than the cross-sectional area of the guide path from the entrance to the bent portion. This prevents the yarn from being pulled out from the middle of the yarn guide pipe.

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

(7) In the yarn winding device described above in (1) to (6), the yarn guide pipe may have a slit (e.g., pull-out slit 82) that guides the yarn from the guide path toward the yarn capture section, and a fin (e.g., fin 83) that stands upright from the slit. This makes it possible to prevent the yarn from being guided away from the yarn winding position.

(8) In the yarn winding device of (1) to (7) above, the yarn guide pipe may have a slit that guides the yarn from the guide path to the yarn capture section side. In this case, the slit may be parallel to the extension direction of the yarn guide pipe. This makes it easier to manufacture the yarn guide pipe.

(9) In the yarn winding device of (1) to (8) above, the supply unit may supply the yarn unwound from the yarn supply bobbin. This allows the yarn to be appropriately guided to the yarn winding position in an automatic winder having a yarn storage device.

(10) In the yarn winding device of (1) to (8) above, the supply unit may supply the yarn spun by air force. This allows the yarn to be properly guided to the yarn winding position in an air spinning machine having a yarn storage device.

(11) In the yarn winding device of (1) to (8) above, the supply unit may supply the yarn spun by the rotational force of the rotor. This allows the yarn to be appropriately guided to the yarn winding position in an open-end spinning machine having a yarn storage device.

This invention can be widely applied to yarn winding devices.

1: Automatic winder 2: Winder unit 3: Machine control device 4: Yarn supplying bobbin supply device 5: Doffing device 6: Yarn supplying section 7: Yarn guiding section 7a: Mounting section 8: Package forming section 10: Unwinding assist device 11: Lower yarn feeler 12: Tension applying section 13: Capturing device 13A: First capturing section 13B: Second capturing section 14: Yarn splicing device 15: Cutter 16: Yarn monitoring device 19: Housing 21: Yarn supplying bobbin 22: Winding bobbin 23: Cradle 24: Traverse drum 25: Control section 26: Transport tray 27: Movable member 28: Auxiliary blowing section 30: Package 37: Pull-out guide 40: Yarn storage device 41: Storage roller 41a: Tapered section 41b: Tapered section 41c: Cylindrical section 41d: Outer circumferential surface 41e : end 41f : end 41g : inner circumferential surface 42 : ring member 43a : first recess 45 : drive motor 47 : cover 47a : opposing surface 50 : detection unit 51 : housing 53 : detection section 53A : line sensor 53B : lens 55 : light emitting section 55A : LED board 55B : light source 55C : optical waveguide 60 : yarn spouting section 70 : wax application device 80 : yarn guide pipe 81 : cylindrical member 81a : first bent section 81b : second bent section 81c : area enlarging section 82 : pull-out slit 83 : fin 84 : rotating fixed member 85 : snap member 86 : protruding member 90 : moving section 91 : cam 91A : first pulley 91B : belt 91C : second pulley 91D : motor 92 : first arm 93 : second arm 94 : Position sensor 95 : Restricting lever A : Storage area A1 : First axis A2 : Second axis C1 : Rotation axis CH : Housing H : Hole IN : Inlet L1 : First straight line L2 : Second straight line O : Origin OUT : Outlet PH : Side surface PH1 : First outer peripheral position SL : Yarn guide slit ST1 : Straight line section Y : Yarn θ : Irradiation angle

Claims (11)

A supply unit that supplies a yarn;
a yarn storage device that stores the yarn supplied from the supply unit;
a winding section that winds the yarn stored in the yarn storage device to form a package;
a yarn splicing device that splices the yarn on the supplying unit side and the yarn on the yarn pooling device side when the yarn is broken between the supplying unit and the yarn pooling device;
a yarn guide section that guides the yarn between the yarn pooling device and the yarn joining device;
Equipped with
The thread guide portion is
a yarn ejection section that pulls out the yarn stored in the yarn storage device and ejects it toward the supply section;
a yarn capturing section disposed between the yarn joining device and the supply section and configured to capture the yarn sprayed by the yarn spraying section;
a yarn guide pipe provided between the yarn spouting section and the yarn catching section, for guiding the yarn spouted from the yarn spouting section to the yarn catching section;
a restricting lever that temporarily restricts the yarn pulled out from the yarn guide pipe from being guided to a yarn winding position when the yarn is wound;
A yarn winding device having the above structure. The yarn winding device according to claim 1, further comprising a moving part that moves the restricting lever between a restricting position that restricts the yarn from being guided to the yarn winding position and an introduction position that allows the yarn to be guided to the yarn winding position. The yarn winding device according to claim 2, wherein the moving unit moves the yarn ejection unit between a yarn guide position when guiding the yarn supplied from the supply unit to the yarn storage device, and a yarn pull-out position when pulling out the yarn stored in the yarn storage device and ejecting it toward the supply unit. The yarn winding device according to any one of claims 1 to 3, wherein the yarn guide pipe is detachable from the yarn guide section. The yarn guide pipe is
an inlet for sucking the yarn ejected from the yarn ejection part into an internal guide path;
a bending portion for changing a moving direction of the yarn sucked into the guide path;
having
a cross-sectional area of the guide path from the bent portion of the yarn guide pipe to the yarn catching portion side is larger than a cross-sectional area of the guide path from the inlet to the bent portion;
The yarn winding device according to any one of claims 1 to 4. The yarn winding device according to any one of claims 1 to 5, wherein the yarn guide pipe has a flat side surface. The yarn guide pipe is
a slit for leading the yarn from an internal guide path to the yarn capture portion;
A fin extending from the slit;
The yarn winding device according to any one of claims 1 to 6, further comprising: the yarn guide pipe has a slit for leading the yarn from an internal guide path to the yarn catcher side,
The yarn winding device according to any one of claims 1 to 7, wherein the slit is parallel to an extension direction of the yarn guide pipe. The yarn winding device according to any one of claims 1 to 8, wherein the supply unit supplies yarn unwound from a yarn supply bobbin. The yarn winding device according to any one of claims 1 to 8, wherein the supply unit supplies yarn spun by air force. The yarn winding device according to any one of claims 1 to 8, wherein the supply section supplies the yarn spun by a rotational force of a rotor.

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