JP5375967B2 - Yarn winding device - Google Patents

Abstract

A technology for making it possible to continue winding while yarn jointing is carried out is provided. A yarn supplying portion 3 for unwinding a spun yarn Y from a yarn supplying bobbin B, a winding section 5 for winding the spun yarn Y to form a package P, an accumulator 7 provided between the yarn supplying portion 3 and the winding section 5 to store the spun yarn Y, and a yarn end drawing mechanism W for drawing out the yarn end of the stored spun yarn Y to the yarn supplying portion 3 side at the time of bobbin change of the yarn supplying bobbin B, yarn cutting, or yarn breakage are provided.

Description

  The present invention relates to a yarn winding device.

  In a yarn winding device, a spun yarn wound around a yarn supplying bobbin is removed, and a spun yarn of a large number of yarn supplying bobbins is connected to be wound back into a cone or cheese-like package.

  The rewinding by this yarn winding device winds the spun yarn that is unwound from the yarn supply bobbin while traversing the spun yarn on a package that is rotated by a traverse drum through a number of yarn guides. When the yarn feeding bobbin becomes empty, the bobbin change for supplying a new yarn feeding bobbin is performed, and then the bobbin change is repeated until the bobbin change is repeated until the package has a predetermined shape. Yes. In this way, the yarn winding device joins the spun yarns of a plurality of yarn feeding bobbins into one package.

  In the above-described yarn winding device, when bobbin change, yarn breakage, and yarn cut, the package once wound is stopped and reversely rotated, and after a certain amount of spun yarn is pulled out of the package, the yarn splicing is performed. After that, the package is rotated forward to resume winding. As described above, when the forward rotation, the rotation stop, and the reverse rotation are repeated, a part of the yarn layer of the wound package may be disturbed. In addition, when the bobbin is changed, when the yarn is broken, or when the yarn is cut, the yarn end on the package side is temporarily wound around the package, but the yarn end falls from the end surface of the package and becomes entangled. Special work was sometimes required.

  As this type of technology, Patent Document 1 discloses a supply device used for preserving a yarn in a process of supplying the yarn to a yarn consuming machine such as a loom that processes the yarn as a weft. It is disclosed. However, since the yarn stored in this supply device has already been freed of yarn defects (yarn defects) by the yarn winding device, the concept of yarn splicing does not exist. The function is completely different from the storage part.

  Patent Document 2 discloses a technique related to air control of yarn feeding to a magazine of a yarn winding machine for continuous yarn winding in a textile machine or the like. However, the magazine in this document is one that only loosens the yarn so that fluctuations in the upstream yarn tension are not transmitted to the downstream side. This is completely different from the yarn storage section in the problem solving means of the present application described later.

JP-T-2001-516691 Japanese Patent Publication No. 48-20455

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to an aspect of the present invention, a yarn winding device configured as follows is provided. That is, the yarn winding device is provided between the yarn supplying unit that unwinds the spun yarn from the yarn supplying bobbin, a winding unit that winds the spun yarn as a package, and between the yarn supplying unit and the winding unit, A yarn splicing operation is performed to connect a yarn storage unit including a yarn storage body that winds and stores the spun yarn, a yarn end of the spun yarn on the yarn supplying unit side, and a yarn end of the spun yarn on the yarn storage unit side A yarn joining portion; and a yarn end drawing mechanism that pulls a yarn end of the spun yarn wound around the yarn reservoir to the yarn supplying portion side when performing the yarn joining operation by the yarn joining portion.

  In this way, it is possible to store a sufficient amount of spun yarn so that the winding portion can continue winding the spun yarn even when the bobbin is changed, cut, or broken. By providing a yarn storage section between the yarn joining section and the winding section, the winding section can wind up the spun yarn even when the bobbin is changed, when the yarn is cut, or when the yarn is broken. Will be able to continue. That is, when performing yarn splicing at the time of bobbin change, yarn cutting, or yarn breakage of the yarn feeding bobbin, the wound portion can be continuously supplied with spun yarn from the yarn storage portion, The “spun yarn on the winding portion side” may be pulled out from the yarn accumulating portion by the operation of the yarn end pulling mechanism instead of being pulled out from the package. Therefore, the problem that the yarn layer of the package is disturbed by repeating forward rotation, rotation stop, and reverse rotation of the package in order to pull out the spun yarn from the package is solved, and the winding portion side as viewed from the yarn joining portion is solved. Since the yarn end of the spun yarn remains in the yarn accumulating portion, the special operation by the operator is not required.

  Furthermore, the following effects are also exhibited. In other words, since the number of times of forward rotation, rotation stop, and reverse rotation of the package is reduced, the power consumption can be reduced correspondingly, and a brake mechanism with a simple structure having a relatively weak brake force can be applied. Become.

  The above-described yarn winding device is further configured as follows. That is, the yarn end drawing mechanism pulls the yarn end of the spun yarn wound around the yarn reservoir by the air flow toward the yarn supplying unit. According to the above configuration, since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging other yarns.

  The above-described yarn winding device is further configured as follows. That is, the yarn end drawing mechanism includes a yarn guide portion that has a yarn path through which the spun yarn can travel and guides the spun yarn on the yarn feeding portion side at a predetermined winding position of the yarn reservoir. ing. According to the above configuration, since the yarn drawing mechanism is integrally provided with the yarn guide portion, the yarn guiding operation at the time of winding the yarn and the yarn drawing operation at the time of the yarn joining operation can be performed at an optimum place.

  The above-described yarn winding device is further configured as follows. That is, the predetermined winding position of the yarn storage body where the spun yarn is guided by the yarn guide section, and the yarn end drawing mechanism, the yarn end of the spun yarn wound around the yarn storage body by an air flow. The position to be pulled out to the yarn supplying section side is the same position in the rotation axis direction of the yarn reservoir. According to the above configuration, winding and drawing out of the yarn end are performed at the same position in the rotation axis direction of the yarn storage body, so the cut yarn end exists at the winding position. Can be pulled out reliably.

  The above-described yarn winding device is further configured as follows. That is, the apparatus further includes a gas flow generation unit for causing the yarn guide unit to generate a gas flow that flows from the yarn storage body side toward the yarn supply unit side. The yarn storage unit further includes a drive unit that rotates the yarn guide unit around a winding central axis of the yarn storage body, and a yarn end of a spun yarn that is on the outer periphery of the yarn storage body by the yarn end drawing mechanism And a control unit that controls the drive unit so that the yarn guide unit rotates in a direction opposite to that during storage when the yarn guide unit is pulled out to the yarn joining unit side. According to the above configuration, at the time of yarn joining by the yarn joining portion, the yarn end of the spun yarn on the outer periphery of the yarn reservoir is sucked into the yarn path of the yarn guide portion by the gas flow, It is pulled out toward the yarn feeding section. In this way, by causing the yarn guide portion to serve both the role of guiding the spun yarn on the yarn supply portion side on the outer periphery of the yarn reservoir and the role of constituting a part of the yarn end drawing mechanism. A yarn winding device with a simple configuration is realized. In addition, since the yarn path at the time of yarn storage and the yarn path at the time of yarn joining are the same yarn path, the spun yarn is already set on the yarn path at the time of yarn storage when the yarn joining is completed. Yarn storage can be resumed immediately after splicing.

  The above-described yarn winding device is further configured as follows. In other words, the yarn storage section further includes a drive section that rotates the yarn guide section around the winding center axis of the yarn storage body, and the yarn storage section of the spun yarn on the outer periphery of the yarn storage body by the yarn end drawing mechanism. A control unit is further provided for controlling the drive unit so that the yarn guide unit rotates in a direction opposite to that during storage when the yarn end is pulled out to the yarn joining unit side. According to the above configuration, the yarn end of the spun yarn on the outer periphery of the yarn reservoir is more easily sucked into the yarn path of the yarn guide portion.

  The above-described yarn winding device is further configured as follows. In other words, the apparatus further includes a drawing detection unit capable of detecting that the yarn end of the spun yarn stored in the yarn storage unit is pulled out to the yarn feeding unit side.

  That is, if it is not clear whether or not the above-described pulling out by the yarn end pulling mechanism is successful, the pulling out by the yarn end pulling mechanism is made successful by considering a time margin. In response to this idea, it is possible to know that the drawing by the yarn end drawing mechanism has been successful by providing the drawing detection unit, so that the yarn end of the spun yarn is fed from the yarn storage unit to the supply unit. The time required for pulling out to the yarn part side can be shortened.

  In addition, the above-described effects are also exhibited in a chain manner as follows. That is, if the time required for the above-mentioned drawing is shortened, the time for interrupting the storage of the spun yarn by the yarn storage unit can be shortened. In this respect, the yarn storage unit stores the yarn in one yarn splice. It is possible to suppress the consumption of the stored amount of spun yarn. Therefore, it becomes easy to avoid the lack of spun yarn in the yarn storage section at the time of yarn splicing. In addition, there is room for adopting a compact yarn storage unit with a small amount of stored spun yarn, which greatly contributes to the compactness of the yarn winding device itself.

  The above-described yarn winding device is further configured as follows. That is, the drawer detection unit is provided in the yarn storage unit. In this way, by providing the pull-out detection unit in the yarn storage unit, the yarn end of the spun yarn stored in the yarn storage unit is pulled out to the yarn supply unit side by the yarn end pull-out mechanism. The yarn end can be detected immediately before it is actually delivered to the yarn joining portion.

  The above-described yarn winding device is further configured as follows. That is, the yarn accumulating unit winds the winding unit at a normal winding speed from the start of bobbin change of the yarn feeding bobbin until the yarn joining operation of the yarn joining unit is executed at least once. It is configured to be able to store a yarn amount that is greater than the yarn amount to be taken. According to the above configuration, the winding at the normal winding speed by the winding unit is continued from the start of the bobbin change of the yarn supplying bobbin until the yarn joining unit completes the yarn joining. Can do. Therefore, a highly productive yarn winding device is realized. It is assumed that the normal winding speed by the winding unit is 1200 [m / min], and 6 [sec] from the start of the bobbin change until the yarn joining unit completes the yarn joining. If it requires, according to said solution means, the said thread | yarn storage part will be comprised so that the thread | yarn amount of 120 [m] can be stored.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage unit further includes a yarn defect detection unit capable of detecting a yarn defect of the spun yarn supplied from the yarn supply unit, and a cutting device that cuts a yarn upstream of the detected yarn defect. At a normal winding speed from the yarn cutting executed by the cutting device when the yarn defect is detected by the yarn defect detecting unit until the yarn joining operation of the yarn joining unit is executed at least once. It is configured to be able to store a yarn amount that is equal to or greater than the yarn amount wound by the winding unit. According to the above configuration, normal winding by the winding unit from the time of yarn cutting performed when the yarn defect detecting unit detects the yarn defect until the yarn joining unit completes the yarn joining. Winding at a speed can be continued. Therefore, a highly productive yarn winding device is realized. It is assumed that a normal winding speed by the winding unit is 1200 [m / min], and that it takes 3 [sec] from the time of the yarn cutting until the yarn joining unit completes the yarn joining. Then, according to said solution means, the said thread storage part will be comprised so that the thread | yarn amount of 60 [m] can be stored.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage unit is configured to wind the winding unit at a normal winding speed from when the yarn breakage occurs until the yarn joining operation by the yarn joining unit is performed at least once. It is configured to be able to store a yarn amount equal to or greater than the yarn amount taken up by the winding unit at a normal winding speed configured to be capable of storing a yarn amount equal to or greater than the yarn amount to be taken. According to the above configuration, the winding at the normal winding speed by the winding unit can be continued from the time of yarn breakage until the yarn joining unit completes the yarn joining. Therefore, a highly productive yarn winding device is realized. It is assumed that the normal winding speed by the winding unit is 1200 [m / min], and that it takes 3 [sec] from the time of the yarn breakage until the yarn joining unit completes the yarn joining. Then, according to said solution means, the said thread storage part will be comprised so that the thread | yarn amount of 60 [m] can be stored.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage unit is configured to be able to store the spun yarn at a yarn speed faster than a normal winding speed when the winding unit winds the spun yarn. That is, during yarn splicing by the yarn splicing unit, the storage of the spun yarn by the yarn accumulating unit is interrupted, and the spun yarn stored in the yarn accumulating unit is taken up by the winding unit, so that the yarn The amount of spun yarn stored by the storage unit temporarily decreases. Therefore, according to the above configuration, after the storage of the spun yarn by the yarn storage unit is resumed, the storage amount can be recovered to the level before the interruption. Therefore, the amount of the spun yarn stored by the yarn storage unit can be kept to the minimum necessary (for example, three times of yarn splicing), so that a compact yarn storage unit is realized.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage unit is provided with a storage amount detection unit that detects the storage amount of the spun yarn, and when it is detected that the storage amount detected by the storage amount detection unit has become a predetermined value or less, The winding unit further includes a control unit that reduces the winding speed of winding the spun yarn. According to the above configuration, it is possible to avoid running out of the storage amount of the spun yarn in the yarn storage unit with simple control.

  The above-described yarn winding device is further configured as follows. That is, the control unit gently reduces the winding speed to such an extent that no disturbance occurs in the yarn layer of the package. That is, when the winding speed is reduced, the yarn layer of the package may be disturbed depending on the mode of the reduction. Therefore, by configuring the control unit as described above, it is possible to suppress the occurrence of disturbance in the yarn layer of the package.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side, and is formed so that the outer periphery becomes shorter from the first end toward the second end. As a result, an inclined portion extending from the first end to the second end is formed, and the yarn guide portion guides the spun yarn on the yarn supplying portion side to the first end side on the outer periphery of the yarn reservoir. . According to the above configuration, the spun yarn on the yarn supplying section side is wound on the first end side on the outer periphery of the yarn reservoir, and the wound spun yarn travels on the outer periphery of the yarn reservoir on the outer periphery. It tries to move spontaneously by the winding force from the first end to the second end side. Therefore, overlapping of the spun yarns at the guide position of the spun yarn by the yarn guide unit is prohibited, and smooth unwinding of the spun yarn on the yarn reservoir is realized.

  The above-described yarn winding device is further configured as follows. That is, the inclined portion of the outer periphery of the front yarn reservoir is configured with at least two types of inclination, and the inclination on the first end side is set larger than the inclination on the second end side. According to the above shape, the spun yarn wound around the first end side on the outer periphery of the yarn reservoir starts to move to the second end side immediately after winding, and when the inclination gradually decreases, This movement becomes difficult. As a result, the spun yarns are densely arranged on the outer periphery of the yarn storage body, so that smooth unwinding of the spun yarn on the yarn storage body and a high storage amount are realized at the same time.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side. The yarn accumulating unit further includes a conveying unit that forcibly conveys the spun yarn wound around the outer periphery of the yarn accumulating body from the first end toward the second end. The yarn guide portion guides the spun yarn on the yarn feeding portion side to the first end side on the outer periphery of the yarn reservoir. According to the above configuration, the spun yarn is wound around the first end on the outer periphery of the yarn reservoir, and the spun yarn wound around the outer periphery of the yarn reservoir starts from the first end. It is forcibly moved toward the two ends. Therefore, overlapping of the spun yarns at the guide position of the spun yarn by the yarn guide unit is prohibited, and smooth unwinding of the spun yarn on the yarn reservoir is realized.

  The above-described yarn winding device is further configured as follows. That is, the yarn storage section includes a plurality of rollers, a yarn winding mechanism that winds a spun yarn around the plurality of rollers, and a roller drive motor that rotates at least one of the plurality of rollers as a drive roller. The plurality of rollers are arranged so as to be able to rotate side by side so that their axes are positioned on the virtual circumference, and the rotation axes of the respective rollers are arranged to be inclined in the circumferential direction of the virtual circumference. Yes. According to the above configuration, since the plurality of rollers around which the spun yarn is wound are arranged at an inclination, when the roller is rotated, the spun yarn wound around the roller by the yarn winding mechanism is sequentially conveyed to the virtual circle. It moves in a direction orthogonal to the surface surrounded by the circumference (hereinafter referred to as the feed direction). At this time, since the spun yarn is conveyed by the roller, the load (frictional force) applied to the spun yarn is small, and the deterioration of the yarn quality is reduced.

  The above-described yarn winding device is further configured as follows. That is, when the yarn storage section rotates, the spinning storage drum around which the spun yarn is wound, the motor that rotates the rotary storage drum in both directions, and the spinning storage drum from the yarn supply section side. And a guiding member for guiding. According to the above configuration, at the time of yarn joining, the spun yarn wound around the rotary storage drum can be pulled out to the yarn supplying unit side by rotating the rotary storage drum in the opposite direction to the time of winding the spun yarn.

  The above-described yarn winding device is further configured as follows. That is, the yarn feeding section assists the unwinding of the spun yarn from the yarn supplying bobbin by lowering the regulating member covering the core tube of the yarn supplying bobbin in conjunction with the unwinding of the spun yarn from the yarn supplying bobbin. A yarn unwinding assisting device is provided. According to the above configuration, the yarn accumulating portion is arranged between the yarn supplying bobbin and the winding portion to interrupt the transmission of the yarn tension, so that the unwinding tension portion of the yarn supplying bobbin is caused by the traverse variation of the winding portion. It is possible to prevent the tension variation from being transmitted. Furthermore, by attaching the unwinding assist device to the yarn feeding bobbin, the yarn unwinding from the yarn feeding bobbin can be performed stably, so that yarn breakage is prevented and the unwinding speed from the yarn feeding bobbin is increased. Can do. Therefore, the unwinding efficiency from the yarn feeding bobbin can be improved.

Front view of winding unit Front view of accumulator Diagram showing the electrical configuration of the winding unit Diagram showing the behavior of spun yarn on the outer circumference of the accumulator Diagram showing the start of drawing out spun yarn Diagram showing the completion of drawing out spun yarn The figure which shows pulling out the yarn defect of the spun yarn Control flow during normal winding Control flow when thread breaks Control flow to prevent yarn deficiency Control flow during yarn cutting Control flow during bobbin change The figure which concerns on 2nd embodiment of this invention The figure which concerns on 3rd embodiment of this invention. The figure which concerns on 5th embodiment of this invention. The figure which concerns on 6th embodiment of this invention.

<First embodiment>
Hereinafter, a yarn winding device according to a first embodiment of the present invention will be described with reference to the drawings. The autowinder 1 (textile machine) is configured by arranging a number of winding units 2 (yarn winding device) shown in FIG.

  Each winding unit 2 can detect a yarn supplying section 3 that unwinds and supplies the spun yarn Y from the yarn supplying bobbin B, and a yarn defect (yarn defect) of the spun yarn Y supplied from the yarn supplying section 3. A yarn clearer 4 (yarn defect detecting unit), a winding unit 5 for winding the spun yarn Y as a package P, and a bobbin change of the yarn supplying bobbin B are provided between the yarn supplying unit 3 and the winding unit 5. When the yarn clearer 4 detects a yarn defect, a yarn splicing unit for splicing the spun yarn Y on the yarn feeding unit 3 side and the spun yarn Y on the winding unit 5 side at the time of yarn cutting or yarn breakage 6 as a main configuration. Each winding unit 2 includes a yarn so that the yarn Y can be continuously wound by the winding unit 5 between the yarn joining unit 6 and the winding unit 5 even during the yarn joining by the yarn joining unit 6. An accumulator 7 (yarn accumulating part) capable of accumulating the spun yarn Y in an amount more than the amount of yarn wound around the winding part 5 during the yarn joining by the joining part 6 is provided. FIG. 1 shows a frame 8 that supports the above-described components of the winding unit 2. The frame 8 includes a control unit 9 (see also FIG. 3) for controlling each component. Contained.

  The yarn supplying unit 3 receives a yarn supplying bobbin B from a magazine (yarn supplying bobbin holding unit) (not shown), supports the yarn supplying bobbin B in a suitable posture, and spun yarn from the yarn supplying bobbin B. The yarn unwinding assisting device 11 assists the unwinding of Y, and the yarn feeler 12 for detecting the presence of the spun yarn Y between the yarn unwinding assisting device 11 and the yarn joining portion 6. . The yarn feeler 12 is electrically connected to the control unit 9 described above, and transmits an empty bobbin signal to the control unit 9 when the spun yarn Y cannot be detected.

  The yarn clearer 4 detects a yarn defect such as a slab or foreign matter of the spun yarn Y, and detects the yarn defect by comparing the mass of the spun yarn Y with a reference value; and By comparing the diameter of the spun yarn Y with a reference value, it is possible to select one of the photoelectric type that detects a yarn defect. The yarn clearer 4 includes a yarn defect calculation unit 4b that calculates the length and thickness of the yarn defect of the spun yarn Y based on the detection result (for example, output voltage value) by the electrostatic capacitance type or the photoelectric method. The yarn clearer 4 is provided with a cutter 4a (cutting device) for cutting the spun yarn Y. The cutter 4a cuts the spun yarn Y as soon as it receives a yarn cutting signal from the yarn clearer 4. In this configuration, when the yarn clearer 4 detects the yarn defect of the spun yarn Y, the yarn defect calculation unit 4b starts to accumulate the length of the yarn defect and calculates the thickness of the yarn defect. get. The yarn clearer 4 comprehensively evaluates the calculation result (the length and thickness of the yarn defect) from the yarn defect calculation unit 4b from various viewpoints, and determines that the calculation result has deviated from the evaluation reference range separately set by the operator. In this case, the spun yarn Y is cut by transmitting a yarn cutting signal to the cutter 4a, and a yarn defect detection signal is transmitted to the control unit 9. This yarn defect detection signal includes the yarn defect length information accumulated by the yarn defect calculation unit 4b and the yarn defect type information determined based on the yarn defect thickness information calculated by the yarn defect calculation unit 4b. It is. The control unit 9 stores the length information and type information of the yarn defect acquired from the yarn clearer 4 in the RAM. Further, the yarn clearer 4 is configured to detect the yarn breakage of the spun yarn Y based on the thickness information of the yarn defect calculated by the yarn defect calculating unit 4b. When a yarn breakage is detected, a yarn breakage signal is transmitted to the control unit 9.

  The winding unit 5 includes a cradle 13 that holds the winding bobbin Bf and a traverse drum 14 that traverses the spun yarn Y. The cradle 13 is configured to be swingable so as to be switched between a contact state and a non-contact state of the package P with respect to the traverse drum 14, and the cradle 13 is rotated according to the winding thickness of the package P. By doing so, a suitable contact state between the package P and the traverse drum 14 can be obtained. The cradle 13 is provided with a package brake 15 (see FIG. 3) that applies a braking force to the rotation of the winding bobbin Bf. The traverse drum 14 is a traverse as a drive source for rotating the traverse drum 14. A vibration drum motor 16 (see FIG. 3) is connected. The package brake 15 and the traverse drum motor 16 are electrically connected to the control unit 9 as shown in FIG. 3, so that the control unit 9 winds the yarn Y by the winding unit 5. The taking speed Va can be freely increased or decreased.

  As shown in FIG. 1, the winding unit 2 is further provided with a yarn end drawing mechanism W. This yarn end drawing mechanism W is used when the yarn feeding bobbin B is changed, when the yarn defect is detected by the yarn clearer 4, or when the yarn is cut or in other words, the yarn joining by the yarn joining portion 6 is performed. Is required, the yarn end of the spun yarn Y wound around the accumulator 7 is pulled out to the yarn joining portion 6 side. Details will be described later.

  The yarn joining unit 6 includes a yarn joining execution unit 17 that performs a yarn joining operation between the spun yarn Y on the yarn feeding unit 3 side and the spun yarn Y on the winding unit 5 side, and the spun yarn on the winding unit 5 side. An upper intermediate pipe 18 (upper yarn end guide unit) that receives Y from the yarn end drawing mechanism W and sets it in the yarn joining execution unit 17, and a lower yarn that sets the spun yarn Y on the yarn feeding unit 3 side in the yarn joining execution unit 17 And a side intermediate pipe 19 (lower yarn end guide portion). The upper relay pipe 18 is supported so as to be rotatable around a shaft 18a, and is supplied with a negative pressure from a negative pressure source 20 shown in FIG. 2, and a suction for sucking the spun yarn Y at the tip thereof. A mouth 18b is formed. Further, the suction port 18b is provided with a simplified clamp portion 18c that clamps the spun yarn Y sucked into the suction port 18b by closing the suction port 18b. An upper pipe motor 21 (see FIG. 3) as a drive source for rotating the upper relay pipe 18 is electrically connected to the control unit 9, so that the control unit 9 can freely connect the upper relay pipe 18. Can be rotated. Similarly, the lower relay pipe 19 is supported so as to be rotatable around a shaft 19a, is supplied with negative pressure from the negative pressure source 20 shown in FIG. 2, and a suction port 19b is formed at the tip thereof. The suction port 19b is provided with a clamp portion 19c. A lower pipe motor 22 (see FIG. 3) as a drive source for rotating the lower relay pipe 19 is electrically connected to the control unit 9, so that the control unit 9 is connected to the lower relay pipe 19. Can be freely rotated. Further, the splicing execution unit 17 is provided with a splicer motor 23 as a drive source for executing the splicing, and the splicer motor 23 (see FIG. 3) is also electrically connected to the control unit 9. Accordingly, the control unit 9 can freely start the yarn joining operation by the yarn joining execution unit 17.

  As shown in FIG. 1, a gate type tensor 24 for applying a desired tension to the spun yarn Y is provided between the yarn feeler 12 and the yarn joining portion 6, and the accumulator 7 and the winding portion 5 In the meantime, a gate type tensor 25 for applying a desired tension to the spun yarn Y in order from the upstream side to the downstream side of the spun yarn Y, and a waxing device 26 for applying wax to the spun yarn Y, , Is provided.

  In the above-described configuration, the spun yarn Y unwound from the yarn feeding bobbin B is passed through the yarn unwinding assisting device 11, the yarn feeler 12, the gate type tensor 24, and the yarn clearer 4 in order, and then the accumulator 7. The spun yarn Y stored in the accumulator 7 is wound while being traversed by the traverse drum 14 via the gate type tensor 25 and the waxing device 26 in this order. The take-up unit 5 winds the package as a package P. At the time of bobbin change of the yarn feeding bobbin B, when the yarn defect is detected by the yarn clearer 4, when the yarn is cut or broken, the spun yarn Y on the yarn feeding unit 3 side as viewed from the accumulator 7 is The yarn end of the spun yarn Y wound around the accumulator 7 is drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W described above when the yarn is once wound around the accumulator 7 and then spliced.

  Next, the configuration of the accumulator 7 will be described in detail with reference to FIG.

  In the present embodiment, the accumulator 7 has a yarn storage body 27 formed in a cylindrical shape around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 in which the spun yarn Y can travel. A winding arm 29 (yarn guiding portion) for guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn storage body 27 and a winding arm 29 that can rotate around the axis C. A winding arm motor 30 (drive unit) that rotates around the axis C of the yarn storage body 27 is provided as a main configuration.

  The yarn storage body 27 has a first end 31 on the yarn feeding unit 3 side and a second end 32 on the winding unit 5 side, and the outer periphery from the first end 31 toward the second end 32. Are formed on the outer periphery of the yarn storage body 27 so that grooves 33 extending in parallel with the axis C are equally spaced in the circumferential direction. Specifically, as shown in FIG. 4A, the inclination α of the lower end 34 on the first end 31 side in the outer periphery of the yarn reservoir 27 is the inclination β of the upper end 35 on the second end 32 side. It is set larger than Specifically, the inclination α of the lower end portion 34 changes gently between 2 and 60 ° with respect to the axis C, the inclination β of the upper end portion 35 is set to 2 ° with respect to the axis C, and the lower end The part 34 and the upper end part 35 are smoothly connected. As shown in FIG. 2, the above-described yarn reservoir 27 is supported on the tip (upper end) of the output shaft 36 of the winding arm motor 30 via a bearing schematically shown. Due to the magnetic coupling force between the magnet 38 attached to the first magnet support 37 fixed to the end 31 side and the magnet 40 attached to the second magnet support 39 provided in the winding arm motor 30. The rotation of the yarn storage body 27 with respect to the winding arm motor 30 is restricted.

  The winding arm 29 is connected to the outer peripheral surface of the output shaft 36, and bypasses the linear portion 41 extending radially outward from the outer peripheral surface of the output shaft 36 and the first magnet support body 37, and the yarn storage body. 27, and a curved portion 42 reaching the vicinity of the lower end portion 34, and an opening 43 facing the lower end portion 34 is formed at the distal end of the curved portion 42. With this configuration, the winding arm 29 can rotate around the axis C of the yarn storage body 27 between the first magnet support 37 and the second magnet support 39 described above. When the attached arm 29 rotates clockwise around the axis C of the yarn storage body 27 in a plan view, the spun yarn Y on the yarn feeding section 3 side guided into the yarn path 28 of the winding arm 29 is transferred to the yarn storage body. 27 is wound around the outer periphery of 27. More specifically, the opening 43 of the winding arm 29 is opposed to the lower end portion 34 on the first end 31 side of the yarn storage body 27, so that the spun yarn Y on the yarn feeding unit 3 side is wound. The arm 29 is guided to the lower end 34 on the first end 31 side on the outer periphery of the yarn reservoir 27 and is wound around the lower end 34. The yarn path 28 of the winding arm 29 communicates with the flow path 44 formed inside the output shaft 36. A balancer 45 formed integrally with the output shaft 36 is provided on the opposite side of the winding arm 29 and the output shaft 36.

  The winding arm motor 30 is a DC brushless motor in the present embodiment, and is electrically connected to the control unit 9, so that the control unit 9 rotates to the rotational speed of the winding arm 29, that is, to the yarn reservoir 27. The winding speed Vb as the yarn speed of the spun yarn Y to be wound can be freely controlled.

  On the yarn clearer 4 side of the winding arm motor 30, a yarn passage 46 communicating with the passage 44 of the output shaft 36, and an opening to the yarn passage 46 and the upper relay pipe 18 side from the winding arm 29 side are provided. A blow-down nozzle 48 having a blow-down flow path 47 formed so as to incline toward is provided. A pressure air source 51 is connected to the downflow passage 47 via a connection pipe 49 and a connection pipe 50, and an electromagnetic wave electrically connected to the control unit 9 is connected between the connection pipe 49 and the connection pipe 50. A valve 52 is provided. With this configuration, when the control unit 9 opens the solenoid valve 52 and the pressure air of the pressure air source 51 is discharged to the yarn passage 46 through the connection pipe 50, the connection pipe 49, and the downflow passage 47 in this order, In the yarn path 28 of the arm 29, the flow path 44 of the output shaft 36 of the winding arm motor 30, and the yarn flow path 46 of the blow-down nozzle 48, an air flow from the yarn reservoir 27 side to the upper relay pipe 18 side. Is to be formed. In the present embodiment, an air flow generating portion X (for generating an air flow (gas flow) flowing from the yarn reservoir 27 side toward the yarn joining portion 6 side in the yarn path 28 of the winding arm 29. The gas flow generation unit) includes at least a blow-down nozzle 48 and a pressurized air source 51. Further, the above-described yarn end drawing mechanism W is configured to include the winding arm 29 and the airflow generation part X. That is, the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generating unit X, and the yarn joining unit 6 side ( Pull out to the yarn feeding section 3 side). Specifically, the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generation unit X, and continues this suction. The spun yarn Y on the outer periphery of the yarn reservoir 27 is pulled out to the yarn joining portion 6 side through the yarn path 28 of the winding arm 29 while rotating the winding arm 29 in the direction opposite to that during storage. Has been.

  Thus, in this embodiment, since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging the yarn Y. In the present embodiment, since the yarn Y is wound and the yarn end is pulled out at the same position in the axial direction of the yarn reservoir 27, the cut yarn end exists at the winding position. Therefore, the yarn end can be pulled out reliably.

  The winding arm motor 30 is provided with a rotary encoder 53 (rotation angle detection unit) that can detect the rotation angle of the winding arm 29. The rotary encoder 53 is electrically connected to the control unit 9. It is connected. The rotary encoder 53 transmits an angle signal corresponding to the rotation angle of the winding arm 29 to the control unit 9. Further, at the lower end of the blow-down nozzle 48, a draw-out that can detect that the yarn end of the spun yarn Y wound around the accumulator 7 is actually drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W. A sensor 54 (drawing detection unit) is provided. The pull-out sensor 54 is electrically connected to the control unit 9 and transmits a pull-out detection signal to the control unit 9 when it is detected that the yarn end of the spun yarn Y is pulled out to the yarn joining unit 6 side. It has become. The drawer sensor 54 in this embodiment can be said to be provided in the accumulator 7 in that it is installed on the winding arm motor 30 of the accumulator 7 via the blow-down nozzle 48 when viewed in the whole winding unit 2. .

  Further, the accumulator 7 is provided with a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57 for detecting the storage amount of the spun yarn Y. These sensors 55 to 57 are supported by an accumulator mounting frame 58 for fixing the accumulator 7 to the frame 8, and are electrically connected to the control unit 9 as shown in FIG. The storage upper limit sensor 55 is positioned at a position facing the upper end of the bundle of spun yarn Y wound around the outer periphery of the yarn storage body 27 when the storage amount M of the accumulator 7 becomes 300 m. Similarly, the storage lower limit sensor 56 is positioned at a position facing the upper end of the bundle of spun yarn Y when the storage amount M of the accumulator 7 becomes 200 m. Similarly, the storage lower limit sensor 57 is positioned at a position facing the upper end of the bundle of spun yarn Y when the storage amount M of the accumulator 7 is 40 m. With this configuration, the storage upper limit sensor 55 transmits a storage amount upper limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the opposing position. Similarly, the storage lower limit sensor 56 transmits a storage amount lower limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the facing position. Similarly, the storage lower limit sensor 57 is configured to transmit a storage amount lower limit signal to the control unit 9 while detecting the presence of the spun yarn Y at the facing position. In the present embodiment, the storage amount detection unit that detects the storage amount of the spun yarn Y in the accumulator 7 includes a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57.

  Here, 300 m is a length that is equal to or longer than the length of the yarn Y wound by the winding unit 6 while repeating the yarn joining described later, for example, three times (at least once). Even when the winding of the yarn Y in the winding unit 6 is continued during the yarn joining, the yarn deficiency of the yarn Y in the accumulator 7 is less likely to occur.

  Next, the configuration of the control unit 9 of the winding unit 2 will be described. That is, the control unit 9 shown in FIG. 3 includes a CPU (Central Processing Unit) which is an arithmetic processing unit, a control program executed by the CPU, and a ROM (Read Only Memory) in which data used for the control program is stored. The RAM (Random Access Memory) for temporarily storing data when the program is executed. Then, the control program stored in the ROM is read by the CPU and executed on the CPU, so that the control program executes hardware such as the CPU, the traverse drum motor control unit 60, the winding arm motor control unit 61. The drawn yarn length calculation unit 63 and the upper pipe control unit 64 function.

  The traverse drum motor control unit 60 reduces the winding speed Va at which the winding unit 5 winds the spun yarn Y when the storage amount detected by the storage amount detection unit falls below a predetermined value. ing. Specifically, when the traverse drum motor control unit 60 stops receiving the storage amount lower limit signal from the storage lower limit sensor 56, the traverse drum motor control unit 60 gently increases the winding speed Va to such an extent that the yarn layer of the package P is not disturbed. Decelerate. Further, when the traverse drum motor control unit 60 stops receiving the storage amount lower limit signal from the storage lower limit sensor 57, the traverse drum motor control unit 60 quickly reduces the winding speed Va and stops the winding by the winding unit 5. As described above, the traverse drum motor control unit 60 decelerates the winding speed Va when the storage amount of the spun yarn Y by the accumulator 7 decreases, and further reduces the storage amount of the spun yarn Y of the accumulator 7. Thus, the deficiency of the spun yarn Y in the accumulator 7 is prevented in advance.

  When the yarn arm of the spun yarn Y on the outer periphery of the yarn storage body 27 is drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W, the winding arm motor control unit 61 means that the winding arm 29 is in the storage state. The winding arm motor 30 is controlled so as to rotate in the reverse direction.

  Based on the rotation angle of the winding arm 29 detected by the rotary encoder 53 from the time when the drawing sensor 54 detects the spun yarn Y, the drawn yarn length calculation unit 63 uses the yarn end drawing mechanism W to draw the yarn from the accumulator 7. The drawn yarn length as the yarn length of the spun yarn Y drawn to the splicing unit 6 side is calculated. That is, the drawn yarn length calculation unit 63 is based on the diameter φ of the yarn reservoir 27 stored in advance in the ROM and the rotation angle of the winding arm 29 from when the drawn sensor 54 detects the spun yarn Y. The drawn yarn length is calculated, and the drawn yarn length as the calculation result is stored in the RAM.

  The upper pipe control unit 64 compares the yarn defect length acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculation unit 63, and when the drawn yarn length reaches the yarn defect length, The upper intermediate pipe 18 is swung in the clamped state, and the spun yarn Y on the winding unit 5 side is guided to the yarn joining execution unit 17 and set.

  Next, the operation of the winding unit 2 will be described with reference to FIGS.

(At the start of winding)
The operator of the autowinder 1 shown in FIG. 1 unwinds the spun yarn Y from the yarn feeding bobbin B, and uses the spun yarn Y to the yarn unwinding assisting device 11, the yarn feeler 12, the yarn clearer 4, the accumulator 7, and the gate type. It is set on the tensor 25 and the waxing device 26 and fixed to the winding bobbin Bf. The yarn path of the spun yarn Y in the accumulator 7 is as shown in FIG. That is, the operator passes the spun yarn Y sequentially through the drawing sensor 54, the yarn passage 46 of the blow-down nozzle 48, the passage 44 of the output shaft 36, and the yarn passage 28 of the winding arm 29. In this state, the operator pulls the spun yarn Y at the opening 43 side of the winding arm 29, winds it around the yarn reservoir 27, for example, about 5 to 20 times, and sets it on the waxing device 26. The spun yarn Y in FIG. 2 is drawn thick for convenience of explanation, but actually, a bundle of spun yarn Y of about 600 windings is always stored on the yarn reservoir 27. Yes.

(Normal winding)
In this state, when the power of the winding unit 2 is turned on as shown in FIG. 8 (S300), the control unit 9 adjusts the winding speed Va of the spun yarn Y by the winding unit 5 to 1200 m / min. The rotation of the oscillating drum 14 is started, and the winding arm 29 is started to rotate so that the winding speed Vb of the spun yarn Y by the accumulator 7 is 1500 m / min (S310). Then, as shown in FIGS. 1 and 2, the bundle of spun yarn Y wound around the outer periphery of the yarn reservoir 27 is unwound by the winding unit 5 in order from the upper end and traversed by the traverse drum 14. However, it is wound on the package P. At the same time, the spun yarn Y on the yarn supplying section 3 side is guided to the lower end 34 of the yarn reservoir 27 by the winding arm 29 as shown in FIG. By rotating clockwise around the axis C in plan view, the yarn reservoir 27 is wound around the lower end 34 on the first end 31 side. Specifically, as shown in FIG. 4A, the guide position A of the spun yarn Y1 by the winding arm 29 is determined so as to face the lower end portion 34, and is guided to the guide position A, and the lower end portion 34. In the spun yarn Y <b> 1 wound around the yarn, a winding force F indicated by a symbol F is generated in a direction approaching the axis C of the yarn reservoir 27. This wrapping force F generates a running force f1 as a component force indicated by reference numeral f1 by engagement with the sharp inclination α of the lower end portion 34, and the spun yarn Y1 causes the spun yarn Y1 to be shown in FIG. As shown by the thick arrow in FIG. 5, the outer periphery of the yarn reservoir 27 tends to move spontaneously from the first end 31 side toward the second end 32 side. Therefore, as shown in FIG. 4C, even if the guide position A of the spun yarn Y1 by the winding arm 29 is fixed so as to face the lower end portion 34, the spun yarn Y1 guided to this guide position A. Is moved from the first end 31 side to the second end 32 side each time, so that the spun yarns Y1 and Y0 at the guide position A are prohibited from being overlapped with each other, and thus the spun yarn on the yarn reservoir 27 is prevented. A smooth unwinding of Y3 is realized. Here, the inclination α of the lower end 34 on the first end 31 side is set larger than the inclination β of the upper end 35 on the second end 32 side. Accordingly, the spun yarn Y1 wound around the guide position A facing the lower end 34 on the first end 31 side on the outer periphery of the yarn reservoir 27 starts to move to the second end 32 side immediately after winding. However, if the inclination eventually reaches the upper end 35 and the inclination becomes gentle, this movement becomes difficult. On the other hand, the spun yarn Y <b> 2 that has already been wound on the outer periphery of the yarn reservoir 27 remains at the boundary between the lower end portion 34 and the upper end portion 35. Therefore, the spun yarn Y1 with the slight running force f1 remaining abuts on the spun yarn Y2, and the spun yarn Y2 and the spun yarn Y3 are moved toward the second end 32 as shown in FIG. 4C. As a result, the spun yarns Y1 to Y3 are densely arranged on the outer periphery of the yarn reservoir 27, so that the spun yarn Y on the yarn reservoir 27 can be smoothly unwound and highly stored. Quantity is realized at the same time.

  At the time of normal winding in which the spun yarn Y is wound around the package P in a state where the spun yarn Y is connected from the yarn supplying unit 3 to the winding unit 5, the control unit 9 performs a yarn break signal as shown in FIG. Is confirmed (S320), whether a yarn defect detection signal is received (S330), whether an empty bobbin signal is received (S340), and whether a storage amount upper limit signal is received is confirmed. (S350). When receiving the yarn break signal (S320: YES), the control unit 9 executes the control flow shown in FIG. 9 (S325) and then returns to the control flow of FIG. Similarly, when receiving the yarn defect detection signal (S330: YES), the control unit 9 executes the control flow shown in FIG. 11 (S335) and then returns to the control flow of FIG. When an empty bobbin signal is received (S340: YES), the control flow shown in FIG. 12 is executed (S345), and then the control flow returns to the control flow of FIG.

  Further, since the winding speed Vb is higher than the winding speed Va for a while from the start of winding, the storage amount M of the accumulator 7 increases, and when the storage amount M reaches 300 m, The upper limit sensor 55 transmits a storage amount upper limit signal to the control unit 9. As shown in FIG. 8, when receiving the storage amount upper limit signal from the storage upper limit sensor 55 (S350: YES), the controller 9 changes the winding speed Vb from 1500 m / min to 1200 m / min (S360). Thereby, the winding speed Va and the winding speed Vb coincide with each other, and the storage amount M of the accumulator 7 becomes constant.

(When thread breaks)
It is assumed that the spun yarn Y is broken by the gate type tensor 24 shown in FIG. In this case, all the spun yarn Y downstream of the gate type tensor 24 is wound around the yarn reservoir 27, and the yarn end of the spun yarn Y is wound around the outer periphery of the lower end portion 34 of the yarn reservoir 27. Become. At the same time, the yarn clearer 4 detects a yarn break and transmits a yarn break signal to the control unit 9. As shown in FIG. 8, when receiving the yarn break signal from the yarn clearer 4 (S320: YES), the controller 9 executes the control flow shown in FIG. 9 (S325). That is, the control unit 9 executes a control flow (details will be described later) for preventing yarn deficiency shown in FIG. 10 in parallel with a known multitask technique (S400). Is stopped (S410). Next, the control unit 9 switches the electromagnetic valve 52 shown in FIG. 5 to the open state, so that the yarn reservoir is placed in the yarn path 28 of the winding arm 29 and the like as indicated by the thick arrows indicated by the symbols a and b. An air flow from the 27 side toward the upper relay pipe 18 side is formed (S420). At the same time, the control unit 9 operates the clamp unit 18c by slightly rotating the upper relay pipe 18 shown in FIG. 5 to switch the suction port 18b from the closed state to the open state. Then, as indicated by the bold arrows indicated by d and d, an air flow is formed in the upper relay pipe 18 from the suction port 18b side to the negative pressure source 20 side (S420). Next, the winding arm motor control unit 61 controls the winding arm motor 30 so that the winding arm 29 rotates at a low speed in a direction opposite to that at the time of storage, that is, counterclockwise in plan view in FIG. (S430), and a reception waiting state for the extraction detection signal from the extraction sensor 54 is entered (S440: NO). Then, the yarn end of the spun yarn Y existing on the lower end 34 is sucked into the opening 43 of the winding arm 29, and the upper relay pipe is passed through the yarn path 28 of the winding arm 29 as shown in FIG. 18 suction ports 18b. At this time, since the spun yarn Y passes through the drawing sensor 54, the drawing sensor 54 transmits a drawing detection signal to the control unit 9. As shown in FIG. 9, when the drawer detection signal is received from the drawer sensor 54 (S440: YES), the control unit 9 turns the upper relay pipe 18 slightly while continuing the low speed rotation of the winding arm 29. By operating the clamp part 18c, the suction port 18b is switched from the open state to the closed state, the spun yarn Y is clamped by the clamp part 18c, and the upper relay pipe 18 is further swung from the top to the bottom. The spun yarn Y drawn from 7 is guided to the yarn joining execution part 17 of the yarn joining part 6 located on the yarn feeding part 3 side from the accumulator 7 (S450). At this time, the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns. At this time, the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27. The control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut. When the guide of the spun yarn Y to the yarn joining execution unit 17 by the upper intermediate pipe 18 is completed (S450), the control unit 9 stops the rotation of the winding arm 29 (S460). On the other hand, the lower relay pipe 19 shown in FIG. 1, like the upper relay pipe 18, sucks and captures the yarn ends of the spun yarn Y existing around the yarn feeler 12, and uses the spun yarn Y as a yarn splicing execution unit. Guide to 17. When the spun yarn Y on the accumulator 7 side and the spun yarn Y on the yarn feeding unit 3 side are set in the yarn splicing execution unit 17, the control unit 9 drives the splicer motor 23 shown in FIG. The yarn splicing operation by the execution unit 17 is executed (S470). Then, the controller 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S480), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S490). The rotation speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S480).

(When detecting yarn defects)
When the yarn defect detection signal is received from the yarn clearer 4 during the normal winding shown in FIG. 8 (S330: YES), the control unit 9 executes the control flow shown in FIG. 11 (S335). That is, the control unit 9 executes the control flow for preventing yarn deficiency shown in FIG. 10 in parallel with a known multitasking technique (S500), stops the rotation of the winding arm 29 (S530), and performs the yarn Similarly to the time of cutting, the electromagnetic valve 52 and the upper pipe motor 21 are controlled to form an air flow in the yarn path 28 and the like as indicated by the thick arrows indicated by symbols a, b, c, and d in FIG. 5 (S540). ). Next, the winding arm motor control unit 61 controls the winding arm motor 30 so that the winding arm 29 rotates at a low speed in a direction opposite to that at the time of storage, that is, counterclockwise in plan view in FIG. (S550), and a reception waiting state for the extraction detection signal from the extraction sensor 54 is entered (S560: NO). Then, the yarn end of the spun yarn Y existing on the lower end 34 is sucked into the opening 43 of the winding arm 29, and the upper relay pipe is passed through the yarn path 28 of the winding arm 29 as shown in FIG. 18 suction ports 18b. At this time, since the spun yarn Y passes through the drawing sensor 54, the drawing sensor 54 transmits a drawing detection signal to the control unit 9. As shown in FIG. 11, when a withdrawal detection signal is received from the withdrawal sensor 54 (S560: YES), the withdrawal yarn length calculation unit 63 is detected by the rotary encoder 53 from the time when the withdrawal sensor 54 detects the spun yarn Y. The rotation angle of the winding arm 29 is acquired (S570), and the drawn yarn length is calculated based on the rotation angle (S580). Then, the upper pipe control unit 64 compares the length of the yarn defect acquired from the yarn defect detection signal with the drawn yarn length calculated by the drawn yarn length calculating unit 63 (S590). Then, the upper pipe control unit 64 waits until the drawn yarn length reaches the yarn defect length (S590: NO), and when it reaches as shown in FIG. 7 (S590: YES), the control unit 9 performs winding. While the low speed rotation of the arm 29 is continued, the clamp portion 18c is operated by slightly turning the upper relay pipe 18 to switch the suction port 18b from the open state to the closed state, and the spun yarn Y is clamped by the clamp portion 18c. Then, the spliced yarn Y drawn from the accumulator 7 is guided to the yarn joining execution unit 17 of the yarn joining unit 6 by further turning the upper relay pipe 18 from top to bottom (S600). A two-dot chain line indicated by a symbol Y6 in FIG. 7 is an image of a spun yarn having a yarn defect. At this time, the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns. At this time, the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27. The control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut. When the guide of the spun yarn Y to the yarn joining execution unit 17 by the upper intermediate pipe 18 is completed (S600), the control unit 9 stops the rotation of the winding arm 29 (S610). On the other hand, the lower relay pipe 19 shown in FIG. 1, like the upper relay pipe 18, sucks and captures the yarn ends of the spun yarn Y existing around the yarn feeler 12, and uses the spun yarn Y as a yarn splicing execution unit. Guide to 17. When the spun yarn Y on the accumulator 7 side and the spun yarn Y on the yarn feeding unit 3 side are set in the yarn splicing execution unit 17, the control unit 9 drives the splicer motor 23 shown in FIG. The piecing operation by the execution unit 17 is executed (S620). Then, the controller 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S630), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S640). The rotation speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S630).

(At the time of bobbin change)
By the way, it is assumed that the yarn feeding bobbin B is empty. In this case, all the spun yarn Y downstream of the gate type tensor 24 is wound around the yarn reservoir 27, and the yarn end of the spun yarn Y is wound around the outer periphery of the lower end portion 34 of the yarn reservoir 27. . At the same time, the yarn feeler 12 transmits an empty bobbin signal to the control unit 9. As shown in FIG. 8, when receiving the empty bobbin signal from the yarn feeler 12 (S340: YES), the control unit 9 executes the control flow shown in FIG. 12 (S345). That is, the control unit 9 executes the control flow for preventing yarn deficiency shown in FIG. 10 in parallel with a known multitasking technique (S700), discharges the current yarn supplying bobbin B, and supplies a new yarn. The bobbin B is loaded into the peg 10, the spun yarn Y of the yarn supplying bobbin B is guided, and is set in a state where it can be captured and sucked by the lower relay pipe 19 (S710). Is stopped (S720). Next, the controller 9 controls the electromagnetic valve 52 and the upper pipe motor 21 in the same way as when the yarn is broken, and the yarn path 28 as indicated by the thick arrows indicated by reference symbols a, b, c, and d in FIG. An air flow is formed in the process (S730). Next, the winding arm motor control unit 61 controls the winding arm motor 30 so that the winding arm 29 rotates at a low speed in a direction opposite to that at the time of storage, that is, counterclockwise in plan view in FIG. (S740), and a reception waiting state for the extraction detection signal from the extraction sensor 54 is entered (S750: NO). Then, the yarn end of the spun yarn Y existing on the lower end 34 is sucked into the opening 43 of the winding arm 29, and the upper relay pipe is passed through the yarn path 28 of the winding arm 29 as shown in FIG. 18 suction ports 18b. At this time, since the spun yarn Y passes through the drawing sensor 54, the drawing sensor 54 transmits a drawing detection signal to the control unit 9. As shown in FIG. 12, when a drawer detection signal is received from the drawer sensor 54 (S750: YES), the control unit 9 turns the upper relay pipe 18 slightly while continuing the low-speed rotation of the winding arm 29. By operating the clamp part 18c, the suction port 18b is switched from the open state to the closed state, the spun yarn Y is clamped by the clamp part 18c, and the upper relay pipe 18 is further swung from the top to the bottom. The spun yarn Y drawn from 7 is guided to the yarn joining execution unit 17 of the yarn joining unit 6 (S760). At this time, the spun yarn Y is newly pulled out from the accumulator 7 by approximately 60 cm as the upper relay pipe 18 turns. At this time, the spun yarn Y is threaded between the clamp portion 18c and the yarn reservoir 27. The control unit 9 synchronizes the turning of the upper relay pipe 18 with the rotation of the winding arm 29 so as not to be cut. When the guide of the spun yarn Y to the yarn joining execution unit 17 by the upper intermediate pipe 18 is completed (S760), the control unit 9 stops the rotation of the winding arm 29 (S770). On the other hand, the lower relay pipe 19 shown in FIG. 1, like the upper relay pipe 18, sucks and captures the yarn ends of the spun yarn Y existing around the yarn feeler 12, and uses the spun yarn Y as a yarn splicing execution unit. Guide to 17. When the spun yarn Y on the accumulator 7 side and the spun yarn Y on the yarn feeding unit 3 side are set in the yarn splicing execution unit 17, the control unit 9 drives the splicer motor 23 shown in FIG. The piecing operation by the execution unit 17 is executed (S780). Then, the control unit 9 starts the clockwise rotation of the winding arm 29 as shown in FIG. 2 (S790), and returns from the thread breakage state of FIG. 5 to the normal winding state of FIG. S800). The rotational speed of the winding arm 29 at this time is set so that the winding speed Vb is 1500 m / min (S790).

  Next, a control flow for preventing yarn deficiency will be described. In this control flow, as shown in FIG. 10, when reception of the storage amount lower limit signal from the storage lower limit sensor 56 is interrupted (S900: NO), until the winding speed Va falls below 500 m / min (S910: YES). The winding speed Va is decelerated gently so as not to disturb the yarn layer of the package P, for example, 100 m / min every 0.5 seconds (S920). As described above, the traverse drum motor control unit 60 reduces the winding speed Va when the accumulated amount of the spun yarn Y by the accumulator 7 decreases, so that there is no shortage of spun yarn Y in the accumulator 7. To be prevented. Further, when the storage of the spun yarn Y by the accumulator 7 is resumed (S960: YES), the control unit 9 disturbs the yarn layer of the package P until the winding speed Va reaches 1200 m / min (S970: NO). The winding speed Va is increased gently, for example, by 100 m / min every 0.5 seconds (S980). When the winding speed Va reaches 1200 m / min (S970: YES), the control unit 9 ends the control flow of FIG. 13 for preventing yarn deficiency (S990). On the other hand, when reception of the storage amount minimum limit signal from the storage minimum limit sensor 57 is interrupted (S930: NO), until the winding speed Va becomes zero (S940: YES), the winding speed Va is quickly increased, for example, The speed is reduced by 800 m / min every 0.5 seconds, and the winding is stopped (S950). This control prevents yarn shortage by stopping winding.

(Summary)
(Technical matter 1)
As described above, in the present embodiment, the winding unit 2 is configured as follows, for example, as shown in FIG. That is, a yarn supplying unit 3 for unwinding and supplying the spun yarn Y from the yarn supplying bobbin B, a yarn clearer 4 capable of detecting a yarn defect of the spun yarn Y supplied from the yarn supplying unit 3, and the spun yarn A winding unit 5 for winding Y as a package P; and a yarn Y provided on the yarn feeding unit 3 side and a yarn spun on the winding unit 5 side provided between the yarn feeding unit 3 and the winding unit 5 A yarn joining portion 6 for joining Y. An accumulator 7 capable of storing the spun yarn Y between the yarn joining portion 6 and the winding portion 5 in an amount more than the amount of yarn wound around the winding portion 5 during the yarn joining by the yarn joining portion 6; A yarn end pulling mechanism W for pulling out the yarn end of the spun yarn Y wound in the accumulator 7 to the yarn joining portion 6 side (yarn supplying portion 3 side) when the yarn joining portion 6 performs the yarn joining; It was.

  As described above, the accumulator 7 capable of storing the spun yarn Y having a sufficient amount of yarn so that the winding of the spun yarn Y by the winding unit 5 can be continued even during the splicing by the yarn splicing unit 6. By providing it between the yarn joining portion 6 and the winding portion 5, the spun yarn Y by the winding portion 5 is also used when the yarn feeding bobbin is changed when the bobbin is changed, when the yarn is cut, or when the yarn is broken. It becomes possible to continue winding. That is, at the time of yarn joining, the spun yarn Y can be continuously supplied from the accumulator 7 to the winding unit 5, and the above “spun yarn Y on the winding unit 5 side” is shown in FIG. As shown in FIG. 6, instead of pulling out from the package P, the yarn end pulling mechanism W may be pulled out from the accumulator 7. Therefore, the problem that the yarn layer of the package P is disturbed by repeating the forward rotation, the rotation stop, and the reverse rotation of the package P in order to pull out the spun yarn Y from the package P is solved. Since the yarn end of the spun yarn Y on the winding unit 5 side stays in the accumulator 7, the special operation described above by the operator is not required.

  Furthermore, the following effects are also exhibited. That is, since the number of times of forward rotation, rotation stop, and reverse rotation of the package P is reduced, the power consumption can be reduced correspondingly, and a brake mechanism having a simple structure with a relatively weak brake force can be applied. become.

(Technical matter 2)
Moreover, said winding unit 2 is further comprised as follows. That is, the yarn end drawing mechanism W pulls the yarn end of the yarn Y wound around the yarn storage body 27 by the air flow toward the yarn supplying unit 3 side. According to the above configuration, since the yarn end is pulled out by the air flow, the yarn end can be pulled out without damaging other yarns.

(Technical matter 3)
Moreover, said winding unit 2 is further comprised as follows. That is, the yarn end drawing mechanism W has a yarn path through which the yarn Y can travel, and includes a yarn guide portion that guides the yarn Y on the yarn supply portion 3 side to a predetermined winding position of the yarn reservoir 27. ing. According to the above configuration, the yarn pulling mechanism W is integrally provided with the yarn guiding portion, so that the yarn guiding operation at the time of winding the yarn and the yarn drawing operation at the time of the yarn splicing operation can be performed at an optimum place. .

(Technical matter 4)
Moreover, said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn reservoir 27 around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 through which the spun yarn Y can travel, and is rotatable around the axis C of the yarn reservoir 27. A winding arm 29 for guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn storage body 27, and the yarn joining section 6 from the yarn storage body 27 side to the winding arm 29. An air flow generation unit X for generating an air flow flowing toward the side. The yarn end drawing mechanism W is configured to include the winding arm 29 and the airflow generation part X. According to the above configuration, the yarn end of the spun yarn Y on the outer periphery of the yarn reservoir 27 is moved into the yarn path 28 of the winding arm 29 by the air flow when the yarn joining is performed by the yarn joining portion 6. It is sucked and pulled out toward the yarn joining portion 6 side. In this way, the winding arm 29 has a role of guiding the spun yarn Y on the yarn feeding section 3 side on the outer periphery of the yarn reservoir 27 and a role of constituting a part of the yarn end drawing mechanism W. By making it also serve, the winding unit 2 having a simple configuration is realized. Further, since the yarn path at the time of yarn storage and the yarn path at the time of yarn joining are the same yarn path, the spun yarn Y is already set on the yarn path at the time of yarn storage when the yarn joining is completed. After yarn joining, yarn storage can be resumed promptly.

(Technical matter 5)
Moreover, said winding unit 2 is further comprised as follows. That is, the accumulator 7 further includes a winding arm motor 30 that rotates the winding arm 29 around the axis C of the yarn storage body 27. When the yarn end of the spun yarn Y on the outer periphery of the yarn storage body 27 is drawn out to the yarn joining portion 6 side by the yarn end drawing mechanism W, the winding arm 29 rotates in the direction opposite to that during storage. Further, a winding arm motor control unit 61 for controlling the winding arm motor 30 is further provided. According to the above configuration, the yarn end of the spun yarn Y on the outer periphery of the yarn reservoir 27 is more easily sucked into the yarn path 28 of the winding arm 29.

(Technical matter 6)
Moreover, it is preferable that said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn amount that the winding unit 5 winds at a normal winding speed Va from the start of the bobbin change of the yarn feeding bobbin B until the yarn joining unit 6 completes the yarn joining. The above yarn amount is configured to be stored. According to the above configuration, the winding unit 5 winds at the normal winding speed Va from the start of the bobbin change of the yarn feeding bobbin B until the yarn joining unit 6 completes the yarn joining. Can continue. Therefore, a highly productive winding unit 2 is realized. It is assumed that the normal winding speed Va by the winding unit 5 is 1200 [m / min], and it is 6 between the start of the bobbin change and the yarn joining unit 6 completing the yarn joining. If [sec] is required, according to the above solution, the accumulator 7 is configured to be capable of storing a yarn amount of 120 [m]. Note that the accumulator 7 according to this embodiment for the spun yarn of the cotton count 30 is configured to be able to store a yarn amount of 300 m.

(Technical matter 7)
Moreover, it is preferable that said winding unit 2 is further comprised as follows. That is, the accumulator 7 is configured so that the winding section is operated at a normal winding speed Va from the time of yarn cutting performed when a yarn defect is detected by the yarn clearer 4 until the yarn joining section 6 completes the yarn joining. 5 is configured to be able to store a yarn amount equal to or greater than the yarn amount to be wound. According to the above configuration, normal winding by the winding unit 5 from the time of yarn cutting performed when the yarn defecter 4 detects a yarn defect until the yarn joining unit 6 completes the yarn joining. The winding at the speed Va can be continued. Therefore, a highly productive winding unit 2 is realized. It is assumed that a normal winding speed Va by the winding unit 5 is 1200 [m / min], and 3 [sec] from the time of the yarn cutting until the yarn joining unit 6 completes the yarn joining. If necessary, according to the above solution, the accumulator 7 is configured to be able to store a yarn amount of 60 [m]. Note that the accumulator 7 according to this embodiment for the spun yarn of the cotton count 30 is configured to be able to store a yarn amount of 300 m.

(Technical matter 8)
Moreover, said winding unit 2 is further comprised as follows. That is, the accumulator 7 can store a yarn amount that is greater than or equal to the amount of yarn wound by the winding unit 5 at a normal winding speed Va from the time when the yarn breaks until the yarn joining unit 6 completes the yarn joining. Composed. According to the above configuration, the winding at the normal winding speed Va by the winding unit 5 can be continued from the time when the yarn breaks until the yarn joining unit 6 completes the yarn joining. Therefore, a highly productive winding unit 2 is realized. The normal winding speed Va by the winding unit 5 is 1200 [m / min], and 3 [sec] is required from the time of the yarn breakage until the yarn joining unit 6 completes the yarn joining. According to the above solution, the accumulator 7 is configured to be able to store a yarn amount of 60 [m]. In the above-described embodiment for the spun yarn of the cotton count 30, the accumulator 7 is configured to be able to store a yarn amount of 300 m.

(Technical matter 9)
Moreover, said winding unit 2 is further comprised as follows. That is, for example, as shown in S310 of FIG. 8, the accumulator 7 is spun at a yarn speed (winding speed Vb) faster than the normal winding speed Va when the winding unit 5 winds the spun yarn Y. The yarn Y can be stored. That is, at the time of yarn joining by the yarn joining portion 6, the storage of the spun yarn Y by the accumulator 7 is interrupted, and the spun yarn Y stored in the accumulator 7 is taken up by the winding portion 5, whereby the accumulator 7, the amount M of the spun yarn Y stored temporarily decreases. Therefore, according to the above configuration, after the storage of the spun yarn Y by the accumulator 7 is resumed, the storage amount M can be recovered to the level before the interruption. Therefore, the storage amount M of the spun yarn Y by the accumulator 7 can be kept to the minimum necessary (for example, three times of yarn splicing), so that a compact accumulator 7 is realized.

(Technical matter 10)
Moreover, said winding unit 2 is further comprised as follows. That is, for example, as shown in FIGS. 2 and 3, the accumulator 7 includes a storage amount detection unit (a storage upper limit sensor 55, a storage lower limit sensor 56, and a storage lower limit sensor 57) that detects the storage amount M of the spun yarn Y. Provided. For example, as shown in FIG. 10, when the storage amount M detected by the storage amount detection unit falls below a predetermined value, the traverse drum motor reduces the winding speed Va at which the winding unit 5 winds the spun yarn Y. A control unit 60 is further provided. According to the above configuration, the storage amount M of the spun yarn Y in the accumulator 7 can be avoided from being exhausted with simple control.

(Technical matter 11)
Moreover, said winding unit 2 is further comprised as follows. That is, the traverse drum motor control unit 60 gently decelerates the winding speed Va to such an extent that no disturbance occurs in the yarn layer of the package P as shown in FIG. That is, when the winding speed Va is reduced, the yarn layer of the package P may be disturbed depending on the mode of the reduction. Therefore, by configuring the traverse drum motor control unit 60 as described above, it is possible to prevent the yarn layer of the package P from being disturbed.

(Technical matter 12)
Moreover, said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 2, the yarn reservoir 27 has a first end 31 on the yarn feeding section 3 side and a second end 32 on the winding section 5 side. The outer periphery is tapered toward the second end 32. The winding arm 29 guides the spun yarn Y on the yarn feeding section 3 side to the first end 31 side on the outer periphery of the yarn reservoir 27. According to the above configuration, the spun yarn Y on the yarn supplying section 3 side is wound around the first end 31 side on the outer periphery of the yarn reservoir 27, and the wound spun yarn Y is shown in FIG. Thus, it tries to move spontaneously on the outer periphery of the yarn reservoir 27 from the first end 31 toward the second end 32 by the winding force F. Therefore, overlapping of the spun yarn Y at the guide position A by the winding arm 29 is prohibited, and smooth unwinding of the spun yarn Y on the yarn reservoir 27 is realized.

(Technical matter 13)
Moreover, said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 4, the inclination α on the first end 31 side of the outer periphery of the yarn storage body 27 is set larger than the inclination β on the second end 32 side. According to the above shape, the spun yarn Y wound around the first end 31 side on the outer periphery of the yarn reservoir 27 starts to move immediately toward the second end 32 immediately after winding, and then inclines. This will be difficult to move when the is loose. As a result, the spun yarn Y is densely arranged on the outer periphery of the yarn reservoir 27, so that smooth unwinding of the spun yarn Y on the yarn reservoir 27 and a high storage amount can be realized at the same time. Is done.

(Technical matter 14)
Moreover, in the said embodiment, the winding unit 2 is comprised as follows. That is, an accumulator 7 capable of storing the spun yarn Y between the yarn joining portion 6 and the winding portion 5 is provided. A yarn end drawing mechanism W for drawing the yarn end of the spun yarn Y wound around the accumulator 7 to the yarn joining portion 6 side at the time of yarn joining by the yarn joining portion 6 is provided. A pull-out sensor 54 that can detect that the yarn end of the spun yarn Y wound around the accumulator 7 is actually pulled out to the yarn joining portion 6 side by the yarn end pull-out mechanism W is further provided.

  That is, if it is not clear whether or not the above-described pulling out by the yarn end pulling mechanism W is successful, the pulling out by the yarn end pulling mechanism W is made successful by considering a time margin. In response to this idea, by providing the pull-out sensor 54, it is possible to know that the pull-out by the yarn end pull-out mechanism W has been successful, so that the yarn end of the spun yarn Y is transferred from the accumulator 7 to the yarn. The time required for pulling out to the joint 6 side can be shortened.

  In addition, the above-described effects are also exhibited in a chain manner as follows. That is, if the time required for the above drawing is shortened, the time for interrupting the storage of the spun yarn Y by the accumulator 7 can be shortened. In this respect, the accumulator 7 stores the spun yarn Y by one yarn splicing. Consumption of the storage amount M of the spun yarn Y can be suppressed. Therefore, it becomes easy to avoid the lack of the spun yarn Y of the accumulator 7 at the time of yarn joining. In addition, there is room for adopting a compact accumulator 7 with a small storage amount of spun yarn Y that can be stored, which greatly contributes to the compactness of the winding unit 2 itself.

(Technical matter 15)
Moreover, said winding unit 2 is further comprised as follows. That is, for example, as shown in FIG. 2, the drawer sensor 54 is provided in the accumulator 7. By providing the pull-out sensor 54 in the accumulator 7 in this way, the yarn end of the spun yarn Y stored in the accumulator 7 is pulled out to the yarn joining portion 6 side by the yarn end pull-out mechanism W. This yarn end can be detected immediately before it is actually delivered to the yarn joining portion 6.

(Technical matter 16)
Moreover, said winding unit 2 is further comprised as follows. That is, the accumulator 7 has a yarn reservoir 27 around which the spun yarn Y is wound on the outer periphery, and a yarn path 28 through which the spun yarn Y can travel, and is rotatable around the axis C of the yarn reservoir 27. The winding arm 29 for guiding the spun yarn Y on the yarn supplying section 3 on the outer periphery of the yarn storage body 27, and the winding arm 29 are rotated about the axis C of the yarn storage body 27. A winding arm motor 30. The yarn end drawing mechanism W rotates the winding arm 29 in a direction opposite to that during storage, and the spun yarn Y on the outer periphery of the yarn storage body 27 is passed through the yarn path 28 of the winding arm 29 through the yarn. It is comprised so that it may pull out to the joint part 6 side. A rotary encoder 53 capable of detecting the rotation angle of the winding arm 29 is provided. Based on the rotation angle of the winding arm 29 detected by the rotary encoder 53 from the time when the drawing sensor 54 detects the spun yarn Y, the yarn end pulling mechanism W moves from the accumulator 7 to the yarn joining portion 6 side. A drawn yarn length calculation unit 63 that calculates the yarn length of the drawn spun yarn Y is further provided. By providing the drawn yarn length calculation unit 63 as described above, a desired yarn length can be drawn out of the spun yarn Y on the outer periphery of the yarn reservoir 27 without excess or deficiency. Therefore, for example, as shown in FIG. 11, it is possible to pull out from the yarn reservoir 27 by the yarn length corresponding to the yarn defect length detected by the yarn clearer 4.

  Further, in the yarn winding unit 2 described above, the unwinding tension of the yarn feeding bobbin 21 is arranged by disposing the accumulator 7 between the yarn feeding bobbin B and the winding unit 5 to cut off the transmission of the tension of the yarn Y. It is possible to prevent the tension variation due to the traverse variation of the winding unit 5 from being transmitted to the portion. Further, by attaching the unwinding assisting device 11 to the yarn supplying bobbin B, the yarn unwinding from the yarn supplying bobbin B can be stably performed. The unwinding speed can be increased. Therefore, the unwinding efficiency from the yarn feeding bobbin B can be improved.

(Technical matter 17)
Further, the above-described yarn winding device is further configured as follows. In other words, the yarn feeding unit 3 lowers the regulating member that covers the core tube of the yarn feeding bobbin B in conjunction with the yarn Y unwinding from the yarn feeding bobbin B, thereby releasing the yarn Y from the yarn feeding bobbin B. A yarn unwinding assisting device 11 for assisting wrinkles is provided. According to the above configuration, the accumulator 7 is disposed between the yarn supplying bobbin B and the winding unit 3 to interrupt the transmission of the yarn tension, so that the winding portion traverse of the winding unit is provided on the unwinding tension portion of the yarn supplying bobbin B. It is possible to prevent the tension fluctuation due to the fluctuation from being transmitted. Furthermore, by attaching the unwinding assisting device 11 to the yarn feeding bobbin B, the yarn unwinding from the yarn feeding bobbin B can be performed stably, so that the yarn breakage is prevented and the unwinding speed from the yarn feeding bobbin is increased. Can be fast. Therefore, the unwinding efficiency from the yarn feeding bobbin B can be improved.

<Second embodiment>
Next, a second embodiment of the present invention will be described based on FIG. Hereinafter, the present embodiment will be described with a focus on differences from the first embodiment, and overlapping descriptions will be omitted.

  In the first embodiment, the drawer sensor 54 is provided in the accumulator 7 as shown in FIG. On the other hand, in the present embodiment, as shown in FIG. Specifically, the drawer sensor 54 is provided on the upper intermediate pipe 18 of the yarn joining section 6.

(Summary)
(Technical matter 18)
As described above, in the present embodiment, the winding unit 2 is configured as follows. That is, the drawer sensor 54 is provided in the yarn joining portion 6. According to such an arrangement, the drawing sensor 54 can detect that the yarn end of the spun yarn Y stored in the accumulator 7 has been drawn to the yarn joining portion 6 side by the yarn end drawing mechanism W. In addition, it is also possible to detect that the normal delivery of the spun yarn Y from the yarn end drawing mechanism W to the yarn joining portion 6 has been performed.

(Technical matter 19)
Moreover, said winding unit 2 is further comprised as follows. That is, the yarn joining unit 6 includes a yarn joining execution unit 17 that performs a yarn joining operation between the spun yarn Y on the yarn feeding unit 3 side and the spun yarn Y on the winding unit 5 side, and the winding unit 5. And an upper intermediate pipe 18 that receives the spun yarn Y on the side from the yarn end drawing mechanism W and sets the spun yarn Y in the yarn joining execution unit 17. The drawer sensor 54 is provided on the upper relay pipe 18. Thus, it is reasonable to provide the pull-out sensor 54 on the member that receives the spun yarn Y among the members that constitute the yarn splicing portion 6.

<Third embodiment>
Next, a third embodiment of the present invention will be described based on FIG. Hereinafter, the present embodiment will be described with a focus on differences from the first embodiment, and overlapping descriptions will be omitted.

  In the first embodiment, the drawer sensor 54 is provided in the accumulator 7 as shown in FIG. On the other hand, in the present embodiment, the above-described yarn clearer 4 is used as the drawer sensor 54. Specifically, as shown in FIG. 6, the upper relay pipe 18 receives the yarn end of the spun yarn Y from the yarn end drawing mechanism W, and the upper relay pipe 18 turns from top to bottom as shown in FIG. When the spun yarn Y is set in the yarn joining unit 17 of the yarn joining unit 6 and the yarn joining by the yarn joining unit 6 is performed, the yarn clearer 4 detects the presence of the spun yarn Y on the winding unit 5 side. It is possible. In other words, the yarn path of the spun yarn Y between the yarn joining execution unit 17 and the accumulator 7 during normal winding, and the yarn path of the spun yarn Y between the yarn joining execution unit 17 and the accumulator 7 during yarn joining are: , Has become a duplicate relationship. Accordingly, whether or not the yarn end drawing mechanism W has tried to draw out the yarn end of the spun yarn Y wound around the outer periphery of the yarn storage body 27 for a predetermined time and has succeeded in drawing out the spun yarn Y from the accumulator 7. Regardless, if the upper relay pipe 18 is swung, the yarn end of the spun yarn Y stored in the accumulator 7 is actually threaded by the yarn end drawing mechanism W by monitoring the output signal of the yarn clearer 4. It is possible to detect whether or not the part 6 is pulled out.

(Summary)
(Technical matter 20)
As described above, in the present embodiment, the winding unit 2 is configured as follows. That is, when the yarn joining by the yarn joining portion 6 is performed, the presence of the spun yarn Y on the winding portion 5 side can be detected by the yarn clearer 4. The yarn clearer 4 is used as the drawer sensor 54.

<Fourth embodiment>
Next, a fourth embodiment of the present invention will be described. Hereinafter, the present embodiment will be described with a focus on differences from the first embodiment, and overlapping descriptions will be omitted.

  In the first embodiment, as shown in FIG. 4A, the slope β is given to the upper end portion on the second end side of the yarn reservoir. In contrast, the upper end portion on the second end side of the yarn storage body according to the present embodiment is not inclined.

  Further, the yarn storage body according to the present embodiment is arranged in a radial direction of a plurality of beam members arranged at predetermined intervals on the circumference and a yarn storage body arranged between a pair of adjacent beam members. And an oscillating member that can freely move back and forth. The swing member includes a swing mechanism including, for example, an eccentric cam and a cam motor. By the operation of the swing mechanism, the bundle Y of the spun yarn Y on the upper end portion is maintained in a state where the distance between the adjacent spun yarns Y is kept constant regardless of whether the adjacent spun yarns Y are in contact with each other. , Conveyed toward the second end side.

  In the present embodiment, the conveying unit that forcibly conveys the spun yarn Y wound on the outer periphery of the yarn reservoir from the first end toward the second end is arranged at a predetermined interval on the circumference. Are arranged between a plurality of beam members arranged with a gap between them, a swinging member which is arranged between a pair of adjacent beam members and can be moved forward and backward in the radial direction of the yarn reservoir, and the swinging member is in the above-mentioned operating state and non-operating state. And a swing mechanism that swings back and forth between the states.

(Summary)
(Technical matter 21)
As described above, in the present embodiment, the winding unit is configured as follows. That is, the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side. The accumulator further includes a transport unit that forcibly transports the spun yarn Y wound around the outer periphery of the yarn reservoir from the first end toward the second end. The winding arm guides the spun yarn Y on the yarn supplying section side to the first end side on the outer periphery of the yarn storage body. According to the above configuration, the spun yarn Y is wound around the first end on the outer periphery of the yarn reservoir, and the spun yarn Y is wound on the outer periphery of the yarn reservoir on the first end. To the second end side. Therefore, overlapping of the spun yarn Y at the guide position of the spun yarn Y by the winding arm is prohibited, and smooth unwinding of the spun yarn Y on the yarn reservoir is realized.

  In addition, according to the above configuration, the bundle Y2 of the spun yarn Y on the upper end portion of the yarn reservoir is conveyed toward the second end side while keeping the distance between the adjacent spun yarns Y constant. Therefore, in this respect, it becomes possible to more accurately detect the storage amount M of the spun yarn Y of the accumulator.

<Fifth embodiment>
Next, a fifth embodiment of the present invention will be described based on FIG. Hereinafter, the present embodiment will be described with a focus on differences from the first embodiment, and overlapping descriptions will be omitted.

  In the present embodiment, an accumulator 161 is provided instead of the accumulator 7 in the first embodiment. The accumulator 161 includes six rollers 171 as a yarn storage body, a base material 172, a rotating plate 173, three winding auxiliary members 174, a winding arm 29 and a winding arm motor 30 similar to the accumulator 7. Have.

  The base material 172 is a substantially circular plate-like body, and is supported on the tip (upper end) of the output shaft 36 of the winding arm motor 30 via a bearing (not shown), and is disposed on the upper surface of the first magnet support 137. Has been. The six rollers 171 are arranged on the upper surface of the base material 72 along a circumference (a circumferential direction of the virtual circumference, hereinafter referred to as a virtual circumferential direction), and a lower end thereof pivots on the upper surface of the base material 172. While being supported, the upper end thereof is supported by the rotating plate 173. The rotation plate 173 is rotatable about the rotation axis C of the winding arm motor 76. When the rotation plate 173 is rotated, the upper end of the roller 171 supported by the rotation plate 73 is They move in the virtual circumferential direction by a distance corresponding to the same central angle. When the upper end of the roller 171 is moved in the circumferential direction by rotating the rotating plate 173, the roller 171 is inclined in the virtual circumferential direction.

  The rotating plate 173 is provided with a rubber ring 181 so as to surround the outer peripheral surface thereof, and the yarn Y wound around the roller 171 passes through a gap between the rotating plate 173 and the rubber ring 181. Then, it is conveyed toward the winding unit 5.

  A pulley 182 is attached to the lower surface of the roller 171. The pulley 182 is a pulley connected to the speed reducer 177 and a speed reducer 177 that transmits the rotation of the winding arm motor 30 with a predetermined reduction ratio. 178a, pulley 178b connected to pulley 178a, pulley 178c connected to pulley 182 and shaft 179 connecting pulley 178b and pulley 178c, and connected to output shaft 36 of winding arm motor 30. . Thus, when the winding arm motor 30 rotates, the rotation is transmitted to the pulley 182 via the speed reducer 177, the pulleys 178a to 178c, and the shaft 179, thereby rotating the roller to which the pulley 182 is attached.

  That is, in the present embodiment, the winding arm motor 30 also serves as a roller driving motor for rotating the roller 171. In the present embodiment, all of the rollers 171 may be driving rollers rotated by the winding arm motor 30, or only some of the rollers 171 are driving rollers, and the other rollers are driven rollers. There may be.

  The three winding auxiliary members 174 are attached to the base material 172 so as to be separated from each other by about 120 ° so as to surround the lower end portion of the roller 171. The winding auxiliary member 174 has a winding auxiliary surface 174 a for smoothly connecting the outer peripheral surfaces of the rollers 171 at a portion located between the adjacent rollers 171. The auxiliary surface 174a forms a surface extending substantially continuously along the circumferential direction. Further, the winding auxiliary surface 174a is inclined so that the upper part is located on the inner side in the radial direction.

  In this embodiment, when the winding arm 29 is rotated counterclockwise in a plan view by the winding arm motor 30, the yarn Y is moved to the lower end of the roller 171 by the winding arm 29 as shown in FIG. 15. And is wound around the lower end of the roller 171.

  At this time, the rollers 171 are spaced apart from each other, but as described above, the winding auxiliary member 174 is disposed so as to surround the lower end portion of the roller 171, and the lower end portion of the roller 171 is wound around the lower end portion. Since the auxiliary surface 174a forms a surface extending substantially continuously along the circumferential direction, the yarn Y is wound across the roller 171 and the winding auxiliary surface 174a. Therefore, the yarn Y can be smoothly wound around the roller 171.

  At this time, the roller 171 also rotates, and the yarn Y wound around the roller 171 by the winding arm 29 is conveyed by the roller 171. Here, as described above, since the roller 171 is inclined in the virtual circumferential direction, the yarn Y conveyed to the roller 171 moves upward (feeding direction). As described above, in the present embodiment, the yarn Y moves upward by being conveyed to the roller 171, so that a load (frictional force) applied to the yarn Y is reduced. At this time, the yarn Y is transported on the roller 171 and the fluff of the yarn Y is laid down.

  Further, at this time, the yarn Y wound around the lower end portion of the roller 171 and the winding auxiliary member 174 moves upward by the rotation of the roller 171, and the winding of the winding auxiliary member 174 is also performed. It moves upward along the inclination of the auxiliary surface 174a.

(Summary)
(Technical matter 22)
As described above, in the present embodiment, the winding unit 2 is configured as follows. That is, the accumulator 161 includes a plurality of rollers 171, a yarn winding mechanism that winds the yarn Y around the plurality of rollers 171, and a winding arm as a roller driving motor that rotates at least one of the plurality of rollers 171 as a driving roller. A plurality of rollers 171 are arranged so as to be rotatable side by side so that the axes thereof are positioned on the virtual circumference, and the rotation axes of the respective rollers 171 are arranged in the circumferential direction of the virtual circumference. It is arranged at an angle. According to the above configuration, since the plurality of rollers 171 around which the spun yarn is wound are disposed at an inclination, when the roller 171 is rotated, the spun yarn wound around the roller 171 by the yarn winding mechanism is sequentially conveyed. Move in the feed direction. At this time, since the yarn Y is conveyed by the roller 171, the load (frictional force) applied to the yarn Y is small, and the deterioration of the quality of the yarn Y is reduced.

<Sixth embodiment>
Next, based on FIG. 16, 6th embodiment of this invention is described. Hereinafter, the present embodiment will be described with a focus on differences from the first embodiment, and overlapping descriptions will be omitted.

  In the present embodiment, an accumulator 261 is provided instead of the accumulator 7 in the first embodiment. The accumulator 261 includes a rotary storage drum 271, a rotary storage drum motor 272, a yarn guide member 273, a blow-down nozzle 274, a yarn path forming member 275, and the like.

  The rotary storage drum 271 is a drum that is rotated around the axis E by the rotary storage drum motor 272, and both end portions thereof are tapered portions 271a whose diameters become smaller toward the opposite end portions, respectively. A portion between the tapered portion 271a and the tapered portion 271b is a straight portion 271c having a substantially constant diameter.

  The yarn guide member 273 is a pipe extending linearly, and is arranged so that the upper left end portion in FIG. 16 faces the tapered portion 271a. As a result, the yarn Y that has traveled from the yarn supplying portion 3 side to the yarn guide member 273 is guided to the taper portion 271a by the yarn guide member 273.

  The blow-down nozzle 274 is attached to the right end of the yarn guide member 273. The blow-down nozzle 274 has a configuration similar to that of the blow-down nozzle 74 (see FIG. 2), and is similar to the yarn flow path 246 and the blow-down flow path 47 (see FIG. 2). 2), a downflow passage 247 to which a pressure air source 51 is connected via connection pipes 49 and 50 is provided. The upper left end portion of the yarn channel 246 in the drawing is connected to the internal space of the yarn guide member 273.

  The yarn path forming member 275 forms the yarn path 228 and is disposed between the suction port 18b of the upper thread guide pipe 18 and the blow-down nozzle 274. The yarn path 228 extends almost directly from its lower end located immediately above the suction port 18b of the upper yarn guide pipe 18, and at its upper end, bends to the upper left in FIG. Is opposed to the lower right end of the yarn channel 246. Further, a yarn withdrawal sensor 54 is provided at the lower end of the yarn path forming member 275.

  In the accumulator 261, when the yarn Y is guided to the taper portion 271 a by the yarn guide member 273, the yarn Y is wound around the taper portion 271 a by the rotation of the rotary storage drum 271 and along the slope of the taper portion 271 a. By moving to the upper right, it is stored in the rotary storage drum 271.

  As described above, in this embodiment, the yarn Y is stored in the rotary storage drum 271 only by guiding Y to one point of the tapered portion 271a. Therefore, the yarn guide member 273 is threaded at one point of the tapered portion 271a. Any device that can guide Y can be used, and can be arranged relatively easily regardless of the position and orientation of the rotary storage drum 271. Therefore, the rotary storage drum 271 can be arranged relatively freely according to the empty space of the winding unit 2 and the like.

  Further, when the yarn breaks, when a yarn defect occurs, or when the yarn feeding bobbin is changed, the solenoid valve 52 is switched to the open state, so that the inner space of the yarn guide member 273, the yarn path 228, etc. An air flow toward the yarn guide pipe 18 is formed, and the rotary storage drum 271 is rotated in the direction opposite to that when the yarn Y is wound, so that the yarn end of the yarn Y existing on the rotary storage drum 271 becomes the yarn It is sucked into the opening of the guide member 273 and pulled out to the suction port 18b of the upper thread guide pipe 18 via the thread path 228 and the like.

  Here, as described above, since the yarn guide member 273 guides the yarn Y to the taper portion 271a, the moving direction of the yarn Y guided from the yarn guide member 273 to the rotary storage drum 71 is the rotational storage drum. As for the axial direction of 271, the direction is from the upper right end side toward the lower left end side. Therefore, the yarn Y guided by the tapered portion 271a does not move to the upper right end side of the rotary storage drum 271 due to inertia when the yarn Y moves from the yarn guide member 273 to the rotary storage drum 271. Accordingly, when the yarn breaks, when a yarn defect occurs, or when the yarn feeding bobbin is changed, the yarn end of the yarn Y surely comes near the taper portion 271a of the rotary storage drum 271 and, strictly speaking, on the left lower end portion of the straight portion 271c. Thus, the yarn Y can be reliably sucked from the opening of the yarn guide member 273.

(Technical matter 23)
As described above, in the present embodiment, the winding unit 2 is configured as follows. That is, when the accumulator 261 rotates, the rotation storage drum 271 around which the yarn Y is wound, the motor 272 that rotates the rotation storage drum 271 in both directions, and the rotation storage drum 271, the yarn Y from the yarn supplying section 3 side. A yarn guide member 273 for guiding. According to the above configuration, at the time of yarn joining, the yarn Y wound around the rotary storage drum 271 can be pulled out to the yarn supplying unit 3 side by rotating the rotary storage drum 271 in the reverse direction to the time when the yarn Y is wound. .

  Although the preferred embodiment of the present invention has been described above, the above embodiment can be implemented with the following modifications.

(First modification)
In the fourth embodiment, the conveying unit is disposed between a plurality of beam members arranged at predetermined intervals on the circumference and a pair of adjacent beam members, and can advance and retreat in the radial direction of the yarn reservoir. And a swing mechanism that swings the swing member back and forth between the operating state and the non-operating state. However, instead of this, the conveying section may be provided between a pair of adjacent beam members and provided with a belt body that travels along the longitudinal direction of the beam members.

(Second modification)
(Technical matter 24)
In the second embodiment, the drawer sensor 54 is provided on the upper relay pipe 18. However, instead of this, the drawer sensor 54 may be provided between the accumulator 7 and the yarn joining portion 6.

(Third modification)
Furthermore, in the first embodiment, all of the downstream spun yarn Y is wound around the yarn reservoir 27 when the yarn breaks, when the yarn defect is detected, or when the bobbin is changed. However, at the time of yarn breakage, yarn defect detection, and bobbin change, the occurrence is detected in advance, and the driving of the winding arm 29 is stopped before the downstream spun yarn Y is completely wound around the yarn reservoir 27. Can also be implemented. For example, when the yarn defect is detected, the cutter 4a cuts the spun yarn Y and simultaneously stops the winding arm 29 from being driven. When the bobbin is changed, a sensor for detecting the remaining yarn amount of the yarn feeding bobbin B is attached to the yarn unwinding assist device 11 to monitor the remaining yarn amount of the yarn feeding bobbin B. Further, it is possible to implement a mode in which the occurrence of the empty state of the yarn supplying bobbin B is detected in advance and the driving of the winding arm 29 is stopped before all the downstream spun yarn Y is wound around the yarn reservoir 27.

  In this way, by stopping the driving of the winding arm 29 before the spun yarn Y is completely wound around the yarn reservoir 27, the yarn end of the spun yarn Y hangs below the blow-down nozzle 48 of the accumulator 7. Can be stopped.

  Therefore, the upper intermediate pipe 18 can catch the yarn end that hangs downward from the accumulator 7, and therefore the drawing process of the spun yarn Y by the yarn end drawing mechanism W can be reduced, and the piecing operation is performed. Increases efficiency. In this embodiment, since the withdrawal sensor 54 is provided at the lower end of the blow-down nozzle 48, the yarn end of the spun yarn Y stored in the accumulator 7 is stopped at a position where it can be received by the upper relay pipe 18. That is, it is possible to detect a state in which the yarn end is reliably stopped in a state where the yarn end hangs below the accumulator 7. Accordingly, it is possible to shorten the time required to draw the yarn end of the spun yarn Y from the yarn accumulating portion to the yarn joining portion.

(Fourth modification)
In the above embodiment, the yarn end drawing mechanism W sucks the yarn end of the spun yarn Y stored in the accumulator 7 by the air flow formed in the winding arm 29 by the air flow generation unit X, However, the yarn end drawing mechanism W is not limited to this, and the yarn end drawing mechanism W is not limited to this, and the spun yarn Y stored in the accumulator 7 with an operable arm member such as a robot arm. It is also possible to grab the yarn end.

Claims (20)

A yarn feeding section for unwinding the spun yarn from the yarn feeding bobbin;
A winding unit for winding the spun yarn as a package;
A yarn storage unit provided between the yarn supply unit and the winding unit, and having a yarn storage body that winds and stores the spun yarn; and
A yarn joining portion that performs a yarn joining operation to connect the yarn end of the spun yarn on the yarn supplying portion side and the yarn end of the spun yarn on the yarn storage portion side;
A yarn end drawing mechanism for pulling out the yarn end of the spun yarn wound around the yarn reservoir to the yarn supplying unit when performing the yarn joining operation by the yarn joining unit;
A yarn winding device, comprising:   2. The yarn winding device according to claim 1, wherein the yarn end drawing mechanism draws a yarn end of the spun yarn wound around the yarn reservoir by an air flow toward the yarn supplying unit. Yarn winding device.   3. The yarn winding device according to claim 2, wherein the yarn end drawing mechanism includes a yarn path through which a spun yarn can travel, and the yarn storage unit side at a predetermined winding position of the yarn storage body. A yarn winding device comprising a yarn guide portion for guiding the spun yarn of the yarn. The yarn winding device according to claim 3,
The predetermined winding position of the yarn reservoir in which the spun yarn is guided by the yarn guide; and
The position where the yarn end drawing mechanism pulls the yarn end of the spun yarn wound around the yarn reservoir by the air flow toward the yarn supplying section is the same position in the rotation axis direction of the yarn reservoir. A yarn winding device. The yarn winding device according to claim 3 or 4,
A gas flow generating section for generating a gas flow flowing from the yarn reservoir side toward the yarn supplying section side in the yarn guide section;
And a yarn winding device. The yarn winding device according to claim 5, wherein the yarn guide portion is rotatable around a winding central axis of the yarn reservoir, and is arranged on an outer periphery of the yarn reservoir on the yarn feeding portion side. Guide the spun yarn,
The yarn winding device, wherein the yarn end drawing mechanism includes the yarn guide portion and the gas flow generation portion.   The yarn winding device according to claim 6, wherein the yarn storage unit further includes a drive unit that rotates the yarn guide unit around a winding center axis of the yarn storage body, and the yarn end drawing mechanism causes the yarn storage unit to rotate the yarn storage unit. A control unit for controlling the drive unit so that the yarn guide unit rotates in a direction opposite to that during storage when the yarn end of the spun yarn on the outer periphery of the yarn storage body is pulled out to the yarn joining unit side; A yarn winding device, characterized in that it is provided.   The yarn winding device according to any one of claims 1 to 7, wherein a drawing detection unit capable of detecting that a yarn end of the spun yarn wound around the yarn storage unit is drawn to the yarn feeding unit side. A yarn winding device, further comprising:   9. The yarn winding device according to claim 8, wherein the drawing detection unit is provided in the yarn storage unit.   The yarn winding device according to any one of claims 1 to 9, wherein the yarn accumulating unit executes the yarn joining operation of the yarn joining unit at least once from the start of the bobbin change of the yarn feeding bobbin. The yarn winding device is configured to be capable of storing a yarn amount that is greater than or equal to the yarn amount wound by the winding unit at a normal winding speed.   The yarn winding device according to any one of claims 1 to 9, wherein a yarn defect detection unit capable of detecting a yarn defect of the spun yarn supplied from the yarn feeding unit, and an upstream side of the detected yarn defect A cutting device that cuts the yarn, and the yarn storage unit performs the yarn joining operation of the yarn joining unit from the yarn cutting performed by the cutting device when a yarn defect is detected by the yarn defect detecting unit. The yarn winding device is configured to be capable of storing a yarn amount that is equal to or larger than the yarn amount wound by the winding unit at a normal winding speed until it is executed at least once.   The yarn winding device according to any one of claims 1 to 9, wherein the yarn accumulating unit is configured to perform a normal operation from the time when the yarn breakage occurs until the yarn joining operation by the yarn joining unit is executed at least once. A yarn winding device, wherein the yarn winding device is configured to be capable of storing a yarn amount equal to or greater than the yarn amount wound by the winding unit at a winding speed.   The yarn winding device according to any one of claims 1 to 12, wherein the yarn accumulating unit is configured to rotate the spun yarn at a yarn speed faster than a normal winding speed when the winding unit winds the spun yarn. A yarn winding device, wherein the yarn winding device is configured to be storable.   The yarn winding device according to any one of claims 1 to 6, wherein a storage amount detection unit that detects a storage amount of spun yarn is provided in the yarn storage unit, and is detected by the storage amount detection unit. The yarn winding device, further comprising a control unit that reduces the winding speed at which the winding unit winds the spun yarn when it is detected that the storage amount is equal to or less than a predetermined value.   15. The yarn winding device according to claim 14, wherein the control unit reduces the winding speed so that the yarn layer of the package is not disturbed.   The yarn winding device according to claim 5 or 6, wherein the yarn storage body has a first end on the yarn feeding unit side and a second end on the winding unit side, from the first end. An inclined portion extending from the first end to the second end is formed by forming the outer periphery to be shorter toward the second end, and the yarn guide portion is formed on the outer periphery of the yarn reservoir. A yarn winding device, characterized in that the spun yarn on the yarn feeding section side is guided to the side.   17. The yarn winding device according to claim 16, wherein the inclined portion of the outer periphery of the yarn reservoir is configured with at least two types of inclination, and the inclination on the first end side is the inclination on the second end side. A yarn winding device characterized in that it is set larger than   16. The yarn winding device according to claim 5, wherein the yarn storage section includes a plurality of rollers, a yarn winding mechanism that winds a spun yarn around the plurality of rollers, and at least one of the plurality of rollers. A plurality of rollers arranged in a rotatable manner so that the axes thereof are positioned on a virtual circumference, and the rotation shafts of the respective rollers are A yarn winding device, wherein the yarn winding device is arranged to be inclined in a virtual circumferential direction.   The yarn winding device according to claim 5, 16 or 17, wherein a rotating storage drum around which the spun yarn is wound by rotating the yarn storage unit, and a motor for rotating the rotary storage drum in both directions, A yarn winding device, wherein the rotary storage drum is provided with a guide member for guiding spun yarn from the yarn supplying unit side.   20. The yarn winding device according to claim 1, wherein a regulating member that covers the core tube of the yarn feeding bobbin is lowered at the yarn feeding unit in conjunction with the unwinding of the spun yarn from the yarn feeding bobbin. And a yarn unwinding assisting device for assisting unwinding of the spun yarn from the yarn feeding bobbin.

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