JP2013154991A - Yarn winding machine and yarn winding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn winding machine that winds a yarn by traversing the yarn with a yarn guide driven to reciprocate and that can improve reliability of threading to the yarn guide and can also prevent the yarn guide from being broken.SOLUTION: An automatic winder includes a package driving motor 24, a yarn guide 27, and a unit control part 18. The package driving motor 24 rotates a package 15 into which a yarn 12 is wound from a stopped state. The yarn guide 27 traverses the yarn 12 by being driven to perform reciprocating movements while guiding the yarn 12 that is to be wound into the package 15. The unit control part 18 controls the package driving motor 24 and the yarn guide 27 such that the driving of the yarn guide 27 is stopped while the rotation of the package 15 is stopped and the yarn guide 27 starts the reciprocating movements after the rotation of the package 15 in a winding direction is started.

Description

  The present invention mainly relates to a configuration for controlling driving of a yarn guide in a yarn winding machine that winds the yarn while traversing the yarn by a reciprocatingly driven yarn guide.

  This type of yarn winding machine is disclosed in Patent Documents 1 and 2, for example. The yarn winding machine is configured to rotate a yarn fed from a yarn feeding section (a spinning cup in the case of Patent Document 1 and a yarn feeding bobbin in the case of Patent Literature 2) and a winding bobbin that is rotationally driven (in the case of Patent Literature 1). It is a device that winds around the outer periphery of the winding bobbin). In addition, the winding bobbin in which the yarn is wound around the outer periphery is particularly referred to as a “package”.

  The yarn winding machine described in Patent Documents 1 and 2 includes a traverse device (yarn traversing device) for traversing (twisting) the yarn wound around the package. This traverse device has an elongated arm member and a yarn guide provided at the tip of the arm member. The yarn guide is configured to be able to hook and guide a yarn. The base end side of the arm member is fixed to the output shaft of a drive motor (drive device), and the arm member is reciprocally swiveled in the winding width direction of the package by this drive motor.

  In addition, this type of yarn winding machine may perform various operations after stopping the rotation of the package as necessary. When performing such an operation, the traverse device retracts the yarn guide to a retracted position that does not engage with the yarn. Thus, the yarn guide retracted to the retracted position is in a state in which the yarn is detached. Therefore, when the rotation of the package is resumed after the yarn guide is retracted, the yarn is hooked on the yarn guide (the yarn guide is engaged with the yarn guide) so that the yarn can be guided by the yarn guide. Need to do. The operation of hooking the yarn on the yarn guide in this way may be called “threading”.

  In the conventional yarn winding machine, the threading is performed at the latest by the start of the rotation of the package. This is because, if the package is rotated without traversing the yarn, a package defect called “bar winding” is formed. The “bar winding” is a phenomenon in which the yarn is continuously wound only at a specific position in the winding width direction of the package. In order to traverse the yarn with the yarn guide, it must first be threaded. Accordingly, it has been a common technical knowledge among those skilled in the art that the threading must be performed at the latest by the time the package starts rotating.

  However, in the conventional yarn winding machine that performs threading before the start of rotation of the package as described above, there is a case where the threading fails. This is because the yarn is not sufficiently tensioned before the start of rotation of the package or at the start of rotation of the package, so that the yarn trajectory is not stable, and the yarn guide is good for the yarn. This is because it may not be caught.

  If threading fails, the traversing of the thread cannot be performed properly, and the quality of the package decreases. If the threading frequently fails, the production efficiency of the entire yarn winding machine will decrease. Accordingly, there is a demand for a configuration that improves the success rate of threading through the yarn guide.

  Patent Document 1 discloses a configuration in which threading is performed in a state where tension is applied to the yarn by generating a relative motion between the yarn guide and the yarn. More specifically, in the automatic traversing machine described in Patent Document 1, the package (twisted bobbin) is reversed and the yarn is sucked and captured by the suction nozzle, and at this time, the yarn guide is moved to perform threading. Thereafter, the yarn joining (yarn joining step) is performed by the yarn joining device (splice device). According to Patent Document 1, it is possible to reliably perform threading.

Special table 2009-507872 Japanese Patent Laid-Open No. 2007-210776

  As described above, Patent Document 1 discloses an automatic traverse winding machine that performs threading after applying tension to the yarn drawn from the package by sucking the yarn on the package side by the suction nozzle. By the way, when the yarn unwound from the package (twisted bobbin) is sucked by the suction nozzle, there is a case where “double squeezing” occurs in which a part of the yarn on the surface layer of the package is pulled toward the suction nozzle. is there.

  Since the automatic traversing machine described in Patent Document 1 is configured to perform threading to the thread guide in a state where a suction force is applied to the surface of the package with the suction nozzle, the double threaded thread (in the suction nozzle) If the yarn guide is caught on the package surface yarn), the yarn guide may be damaged.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the threading reliability with respect to the yarn guide in a yarn winding machine that winds the yarn while traversing the yarn by a reciprocatingly driven yarn guide. Another object of the present invention is to provide a configuration that prevents the yarn guide from being damaged.

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 machine having the following configuration is provided. That is, the yarn winding machine includes a first drive unit, a yarn guide, and a control unit. The first driving unit rotates the package around which the yarn is wound from a stopped state. The yarn guide traverses the yarn by being reciprocated while guiding the yarn wound around the package. The controller stops the reciprocating drive of the yarn guide while stopping the rotation of the package, and starts the reciprocating drive of the yarn guide after starting the rotation of the package in the winding direction. In this manner, the first drive unit and the yarn guide are controlled.

  As described above, by starting the traverse of the yarn after the rotation of the package in the winding direction is started, the thread guide can be threaded with the tension applied to the yarn. Thereby, the success rate of the threading with respect to a thread guide can be improved.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine includes a second drive unit that reciprocally drives the yarn guide separately from the first drive unit.

  In this manner, by providing the package rotation drive source and the traverse drive source independently, it is possible to easily realize the control of performing threading after the package rotation is started.

  The yarn winding machine is preferably configured as follows. That is, the yarn winding machine further includes a timer for measuring time. The control unit controls the yarn guide to start traversing by the yarn guide when the timer measures the passage of a predetermined time.

  In this way, the threading can be performed after a sufficient tension is applied to the yarn wound around the package by the simple control of starting the traverse of the yarn when a predetermined time has elapsed. Further, since the traverse start timing is controlled by time, the traverse of the yarn can be started within a predetermined time. Thus, the traverse of the yarn can be surely started before the rod winding is formed so as to affect the quality of the package.

  The above yarn winding machine can also be configured as follows. That is, the yarn winding machine further includes a rotation detection unit that detects the rotation of the package. The control unit causes the yarn guide to start traversing by the yarn guide when the rotation amount or rotation speed of the package acquired based on the detection result of the rotation detection unit reaches a predetermined value. Control.

  That is, when the rotation amount or rotation speed of the package reaches a predetermined value, it can be determined that a sufficient tension is applied to the yarn wound around the package. Therefore, as described above, the timing of threading can be appropriately controlled with a simple configuration of detecting the rotation amount or rotation speed of the package.

  The above yarn winding machine can also be configured as follows. That is, the yarn winding machine further includes a rotation command unit that transmits a rotation speed command value to the first drive unit. The control unit controls the yarn guide to start traversing by the yarn guide when a command value transmitted by the rotation command unit reaches a predetermined value.

  By performing control based on the command value of the rotational speed to the first drive unit, for example, control according to the rotational speed of the package without using an additional sensor such as a dedicated sensor for detecting the rotational speed of the package Can be realized. Thereby, after starting the rotation of the package, it is possible to easily realize the control of performing threading when the rotational speed of the package becomes a predetermined speed or more.

  In the above-described yarn winding machine, it is preferable that the first driving unit directly rotates the package.

  Thus, by adopting a configuration in which the package is directly driven to rotate, the rotation of the package can be reliably started by starting the driving of the first drive unit. Therefore, the threading can be performed after the rotation of the package is reliably started.

  In the above-described yarn winding machine, it is preferable that the yarn guide includes a yarn hooking groove that is open on one side in the traverse direction of the yarn.

  Thereby, the threading can be easily performed only by moving the thread guide in the traverse direction.

  According to another aspect of the present invention, the following yarn winding method is provided. That is, the yarn winding method includes a package driving process, a traverse process, and a starting process. In the package driving process, the package around which the yarn is wound is rotated from a stopped state. In the traverse step, the yarn is traversed by reciprocatingly driving a yarn guide in a state in which the yarn wound around the package is guided. In the starting step, the reciprocating drive of the yarn guide is stopped while the rotation of the package is stopped, and the reciprocating drive of the yarn guide is started after the rotation of the package in the winding direction is started. Start.

  By starting the traverse of the yarn after the rotation of the package in the winding direction is started as described above, the thread guide can be threaded with the tension applied to the yarn. Thereby, the success rate of the threading with respect to the said thread guide can be improved.

  The above yarn winding method is preferably performed as follows. That is, this yarn winding method includes a time measuring step for measuring time. In this yarn winding method, the traverse process is started when it is measured that a predetermined time has elapsed in the time measurement process.

  As described above, the traverse of the yarn by the yarn guide can be started after a sufficient tension is applied to the yarn wound around the package by a simple method of starting the traverse of the yarn when a predetermined time has elapsed. Further, since the traverse start timing is controlled by time, the traverse of the yarn can be started within a predetermined time. Thus, the traverse of the yarn can be surely started before the rod winding is formed so as to affect the quality of the package.

  The above yarn winding method can also be performed as follows. That is, this yarn winding method includes a rotation detecting step of detecting the rotation of the package. In this yarn winding method, the traverse process is started when the rotation amount or rotation speed of the package acquired based on the detection result in the rotation detection process reaches a predetermined value.

  As described above, the timing of threading can be appropriately controlled by a simple configuration of detecting the rotation amount or the rotation speed of the package.

  The above yarn winding method can also be performed as follows. That is, the yarn winding method includes a rotation command step of transmitting a rotation speed command value to a drive unit that rotationally drives the package. In this yarn winding method, the traverse process is started when the command value reaches a predetermined value.

  By performing control based on the command value of the rotational speed to the drive unit, for example, control according to the rotational speed of the package is realized without using an additional sensor such as a dedicated sensor for detecting the rotational speed of the package. be able to. Thereby, after starting the rotation of the package, it is possible to easily realize the control of performing threading when the rotational speed of the package becomes a predetermined speed or more.

The typical front view and block diagram of the thread winding unit with which the automatic winder which concerns on one Embodiment of this invention was equipped. The side view which shows the mode of the package vicinity. The top view of a thread | yarn guide. The flowchart of a yarn winding method. The side view which shows a mode that an upper thread | suction is sucked and captured. The side view which shows a mode that double extraction has generate | occur | produced. The figure which shows a mode that rotation of a package is stopped. The figure which shows the mode immediately after the rotation start of a package. The figure which shows a mode that a thread | yarn guide is moved in order to perform threading. The figure which shows a mode that the bar winding was formed in the package.

  Next, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic front view and block diagram of a yarn winding unit 10 provided in an automatic winder (yarn winding machine) according to this embodiment. The automatic winder of this embodiment includes a plurality of yarn winding units 10 shown in FIG. Further, the automatic winder of this embodiment includes a machine base control device (not shown) for centrally controlling the plurality of yarn winding units 10.

  Each yarn winding unit 10 unwinds the yarn 12 of the yarn supplying bobbin 11 and winds it on the winding bobbin 14. The winding bobbin 14 in a state where the yarn 12 is wound is referred to as a package 15. In the following description, the terms “upstream side” and “downstream side” refer to the upstream side and the downstream side when viewed in the traveling direction of the yarn 12, respectively. That is, as shown in FIG. 1 and the like, in the present embodiment, the yarn 12 unwound from the yarn supplying bobbin 11 by the yarn supplying portion 16 is wound by the winding portion 17, so that the yarn supplying portion 16 side is on the upstream side. Yes, the winding unit 17 side is downstream.

  Each yarn winding unit 10 includes a yarn supplying unit 16, a winding unit 17, and a unit control unit 18.

  The unit control unit 18 includes, for example, a central processing unit (CPU), a random access memory (RAM), a read only memory (ROM), an input-output (I / O) port, and a communication port. Yes. A program for controlling each component of the yarn winding unit 10 is recorded in the ROM. The I / O port and the communication port are connected to each component (details will be described later) of the yarn winding unit 10 and the above-described machine base setting device, and the unit control unit 18 can communicate control information and the like. It is configured as follows. Thereby, the unit control part 18 can control operation | movement of each part with which the yarn winding unit 10 is provided.

  The yarn supplying section 16 is configured to hold the yarn supplying bobbin 11 for supplying the yarn 12 at a predetermined position. The winding unit 17 is configured to wind the yarn 12 supplied from the yarn supplying unit 16 while traversing (traversing) the outer periphery of the winding bobbin 14. Specifically, the winding unit 17 includes a cradle 19, a contact roller 20, and a traverse device 21.

  The cradle 19 is provided with a pair of bearing centers 22 and 23. The bearing centers 22 and 23 are configured to be rotatable about the axis with respect to the cradle 19 and are arranged to face each other in the axial direction. The cradle 19 supports the winding bobbin 14 with the bearing centers 22 and 23 sandwiched from its axial direction. Thus, the package 15 can be supported by the cradle 19 so as to be rotatable around the axis.

  One of the pair of bearing centers 22 and 23 (in the case of FIG. 1, the bearing center 23) is connected to the rotation output shaft of the package drive motor (first drive unit) 24 so as not to be relatively rotatable. By rotating the package drive motor 24 with the package 15 held between the bearing centers 22 and 23, the package 15 can be directly rotated.

  The yarn winding unit 10 includes a package drive control unit 25 that controls the operation of the package drive motor 24. The unit control unit 18 is configured to transmit a command value for the rotation frequency (the number of rotations per unit time) of the package drive motor 24 to the package drive control unit 25. Therefore, it can be said that the unit control unit 18 is the rotation command unit 54. The package drive control unit 25 performs control so that the package drive motor 24 is rotationally driven at a rotation frequency specified by the command value received from the rotation command unit 54. Thereby, the package 15 can be rotated at a desired rotation frequency.

  The cradle 19 is provided with a package rotation sensor (rotation detection unit) 26 for detecting the rotation of the package 15. The package rotation sensor 26 is configured, for example, as an incremental rotary encoder, and each time the bearing center 22 rotates by a predetermined angle (that is, every time the package 15 rotates by a predetermined angle), a pulse signal is transmitted to the unit controller 18. Send to. The unit controller 18 can detect how much the package 15 has rotated based on the pulse signal received from the package rotation sensor 26.

  The traverse device 21 is disposed in the vicinity of the cradle 19. The traverse device 21 is configured as an arm type traverse device. Specifically, as shown in FIG. 2, the traverse device 21 includes a yarn guide 27, a traverse arm 28, and a traverse drive motor (second drive unit) 29.

  As shown in FIG. 3, the yarn guide 27 is provided at the tip of the traverse arm 28. The thread guide 27 is formed in a hook shape. More specifically, the yarn guide 27 is formed in a shape that curves to one side, and an elongated yarn hooking groove 30 for hooking and guiding the yarn 12 is formed on the inner peripheral side of the yarn guide 27. Yes.

  The base end side of the traverse arm 28 (the side opposite to the yarn guide 27 in the longitudinal direction of the traverse arm 28) is fixed to the drive shaft of the traverse drive motor 29. The traverse drive motor 29 is for turning the traverse arm 28 and is constituted by a servo motor or the like. By traversing and traversing the traverse arm 28 by the traverse drive motor 29, the yarn guide 27 at the tip of the traverse arm 28 can be driven to reciprocate in the traverse width direction (left-right direction in FIG. 1). As described above, the yarn guide 27 of the traverse device 21 is configured to guide the yarn 12 by hooking the yarn 12 (engagement with the yarn 12). In a state where the yarn 12 is hooked on the yarn guide 27 (a state where the yarn 12 is guided by the yarn guide 27), the yarn guide 27 is reciprocated to reciprocate the trajectory of the yarn 12 within a predetermined traverse width. Can do. The yarn winding unit 10 includes a traverse control unit 31 for controlling the traverse drive motor 29. The traverse control unit 31 controls the traverse drive motor 29 based on a control signal from the unit control unit 18.

  On the other hand, a contact roller 20 is disposed in the vicinity of the cradle 19. The contact roller 20 is configured to be driven to rotate by contacting the outer peripheral surface of the package 15. As shown in FIG. 2, the contact roller 20 is disposed so as to contact the yarn 12 wound around the package 15. Thus, by winding the yarn 12 around the package 15 while making contact with the contact roller 20, the trajectory of the yarn 12 is stabilized, so that the yarn guide 27 can prevent the yarn 12 from being excessively swung.

  While the package 15 is rotated in the winding direction by the winding unit 17 configured as described above, the yarn 12 is reciprocated within the traverse width by the traverse device 21, thereby traversing the yarn 12 and the package 15. Can be wound on the surface of

  In addition, the automatic winder of this embodiment is the structure which provided the traverse drive motor 29 and the package drive motor 24 separately. As a result, the automatic winder of the present embodiment can perform the traverse of the yarn 12 independently of the rotation of the package 15, so that the traverse start timing and the like can be flexibly controlled.

  As shown in FIG. 3, the yarn guide 27 has yarn guide portions 32 and 33 provided so as to be inclined toward the yarn hooking groove 30. Thereby, the yarn 12 can be easily hooked on the yarn guide 27 (the yarn 12 can be easily introduced into the yarn hooking groove 30). The yarn hooking groove 30 has a shape with one side opened in the traverse width direction. Therefore, the yarn 12 can be easily hooked on the yarn guide 27 by moving the yarn guide 27 in the traverse width direction. That is, the thread guide 27 can be threaded only by driving the traverse device 21, and the thread 12 can be guided by the thread guide 27.

  As shown in FIG. 2, in this embodiment, the turning axis of the traverse arm 28 (the output shaft of the traverse drive motor 29) is substantially parallel to the yarn path of the yarn 12 near the yarn guide 27. As a result, the yarn guide 27 is reciprocated in a plane substantially orthogonal to the yarn path, so that the yarn 12 can be traversed without difficulty by the yarn guide 27.

  The cradle 19 is configured to absorb an increase in the diameter of the package 15 as the yarn 12 is wound up by rotating about the rotation shaft 34. That is, since the cradle 19 is configured to be rotatable, the outer periphery of the package 15 can be appropriately brought into contact with the contact roller 20 regardless of the diameter of the package 15.

  The yarn winding unit 10 includes, in order from the yarn supplying unit 16 between the yarn supplying unit 16 and the winding unit 17, a unwinding assisting device 35, a tension applying device 36, a yarn joining device 37, and a yarn monitoring device. 38 is arranged.

  The unwinding assisting device 35 includes a regulating member 39 that can be put on the core tube of the yarn feeding bobbin 11. The restricting member 39 is configured in a substantially cylindrical shape and is disposed so as to contact a balloon formed on the yarn layer upper portion of the yarn feeding bobbin 11. The balloon refers to a portion where the yarn 12 unwound from the yarn feeding bobbin 11 is swung by centrifugal force. By bringing the regulating member 39 into contact with the balloon, tension is applied to the yarn 12 of the balloon portion, and the yarn 12 is prevented from being swung excessively. Thereby, the yarn 12 can be appropriately unwound from the yarn supplying bobbin 11.

  The tension applying device 36 applies a predetermined tension to the traveling yarn 12. In this embodiment, the tension applying device 36 is configured by a gate type device in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are biased so that the comb teeth are engaged with each other. By passing the yarn 12 while bending the interdigitated comb teeth, an appropriate tension can be applied to the yarn 12 and the quality of the package 15 can be improved. The tension applying device 36 is not limited to the gate type, but may be a disk type, for example.

  The yarn monitoring device 38 is configured to monitor the quality of the traveling yarn 12. Specifically, the yarn monitoring device 38 includes a clearer head 40 including a light transmission type sensor that detects the thickness of the yarn 12, and an analyzer 41 that processes a yarn thickness signal from the sensor. . The yarn monitoring device 38 is configured to detect a yarn defect (location where there is an abnormality in the yarn 12) included in the yarn 12 by monitoring the yarn thickness signal from the sensor with the analyzer 41. A cutter 42 is provided immediately upstream of the clearer head 40 to cut the yarn 12 immediately when the yarn monitoring device 38 detects a yarn defect. The yarn monitoring device 38 is not limited to the light transmission type sensor, and may be configured to monitor the yarn 12 using, for example, a light reflection type sensor or a capacitance type sensor.

  The yarn joining device 37 joins the lower yarn on the yarn feeding bobbin 11 and the upper yarn on the package 15 side when the yarn 12 between the yarn feeding bobbin 11 and the package 15 is in a divided state for some reason. (Yarn splicing). In the present embodiment, the yarn joining device 37 is configured as a splicer device that twists yarn ends together by a swirling air flow generated by compressed air. However, the yarn splicing device 37 is not limited to a pneumatic splicer device, and for example, a mechanical knotter or the like can be employed.

  On the lower side and the upper side of the yarn joining device 37, a lower yarn catching member 45 that catches the yarn end on the yarn feeding bobbin 11 side and guides it to the yarn joining device 37, and a yarn end on the package 15 side is caught. An upper thread catching member 46 for guiding to the joining device 37 is provided. The lower thread catching member 45 includes a lower thread pipe arm 47 and a lower thread suction port 48 formed at the tip of the lower thread pipe arm 47. The upper thread catching member 46 includes an upper thread pipe arm 49 and an upper thread suction port 50 formed at the tip of the upper thread pipe arm 49.

  The lower thread pipe arm 47 and the upper thread pipe arm 49 are configured to be rotatable about shafts 51 and 52, respectively. Appropriate negative pressure sources (not shown) are connected to the lower thread pipe arm 47 and the upper thread pipe arm 49, respectively. Accordingly, the lower thread pipe arm 47 and the upper thread pipe arm 49 are configured to generate suction flows at the lower thread suction port 48 and the upper thread suction port 50 so that the thread ends of the upper thread and the lower thread can be sucked and captured. Has been.

  Subsequently, a yarn winding method in which the rotation of the package 15 is stopped by the automatic winder of the present embodiment and then the rotation of the package 15 is started will be described.

  Various reasons are conceivable for stopping the rotation of the package 15 winding the yarn 12. For example, when the package 15 is full, it is necessary to stop the rotation of the full package 15 in order to remove the package 15 from the winding unit 17 and set a new winding bobbin 14 in the winding unit 17. There is. When the yarn 12 between the yarn supplying bobbin 11 and the package 15 is cut, it is necessary to stop the rotation of the package 15 and perform the yarn joining operation by the yarn joining device 37. When a yarn defect is detected by the yarn monitoring device 38, it is necessary to temporarily stop the rotation of the package 15 in order to remove the yarn defect. Hereinafter, an example in which a yarn defect is detected by the yarn monitoring device 38 will be described with reference to the flowchart of FIG.

  The unit controller 18 monitors the detection result of the yarn monitoring device 38. If a yarn defect is detected by the yarn monitoring device 38 (determination in step S101), the unit controller 18 immediately operates the cutter 42 to cut the yarn 12 (step S102). At this time, the yarn 12 on the downstream side of the portion cut by the cutter 42 is wound around the package 15. Note that the yarn 12 wound around the package 15 in this way includes a yarn defect detected by the yarn monitoring device 38. On the other hand, the yarn 12 upstream of the portion cut by the cutter 42 is sucked and captured by the lower yarn suction port 48.

  The unit control unit 18 stops the rotation of the package 15 at the same time as or before or after the cutting of the yarn 12. Incidentally, the yarn winding unit 10 of the present embodiment does not include a mechanical brake mechanism. Therefore, the unit control unit 18 stops the rotation of the package 15 by performing deceleration control of the package drive motor 24.

  Since inertia is acting on the package 15, slipping may occur between the bearing center 23 and the winding bobbin 14 if the package driving motor 24 is stopped suddenly. Therefore, when the rotation of the package 15 is stopped, the rotation command unit 54 gradually decreases the rotation frequency command value transmitted to the package drive control unit 25. Thereby, since the package drive motor 24 is gradually decelerated, the slip between the bearing center 23 and the winding bobbin 14 can be prevented, and the rotation of the package 15 can be stopped appropriately.

  Before and after the rotation of the package 15 is stopped, the unit controller 18 retracts the yarn guide 27 to a retracted position (a position outside the end of the traverse width) that does not engage the yarn 12, and stops at this retracted position. As described above, a control signal is transmitted to the traverse control unit 31. Thereby, the yarn guide 27 does not get in the way during the yarn joining operation (described later) or the like. Since the yarn end of the yarn 12 cut by the cutter 42 is wound around the package 15, the yarn 12 is not guided by the yarn guide 27 at the time of step S103 (the yarn 12 is not in the yarn guide 27). The thread 12 is not engaged, that is, the thread 12 is detached from the thread hooking groove 30.

  Subsequently, the unit control unit 18 rotates the upper thread pipe arm 49 upward (winding unit 17), and causes the upper thread suction port 50 to approach the surface of the package 15. In this state, the unit controller 18 generates a suction flow at the upper thread suction port 50 and transmits a control signal to the package drive controller 25 to rotate the package 15 in the reverse direction (rotate in the direction opposite to the winding direction). (The state of FIG. 5). Thereby, the yarn end wound around the package 15 is pulled out and sucked and captured by the upper yarn suction port 50 (step S104). At this time, the unit controller 18 reversely rotates the package 15 by a predetermined amount, thereby pulling out the yarn defect portion detected by the yarn monitoring device 38 from the package 15 and sucking it to the upper yarn suction port 50. As a result, the yarn defect portion detected by the yarn monitoring device 38 can be removed from the package 15.

  The unit controller 18 rotates the upper thread pipe arm 49 downward while the upper thread suction port 50 sucks and captures the thread 12 (upper thread) on the package 15 side. Thereby, the upper thread is introduced into the yarn joining device 37. Before and after this, the unit controller 18 rotates the lower thread pipe arm 47 upward in a state where the lower thread suction port 48 sucks and captures the thread 12 (lower thread) on the yarn feeding bobbin 11 side. Thereby, the lower thread is introduced into the yarn joining device 37 (step S105). After the introduction of the upper yarn into the yarn joining device 37 is completed, the unit control unit 18 transmits a control signal to the package drive control unit 25 to stop the reverse rotation of the package 15 (step S106).

  When the upper yarn and the lower yarn are introduced into the yarn joining device 37, the unit controller 18 operates the yarn joining device 37 to perform the yarn joining operation for joining the upper yarn and the lower yarn. Thereby, the thread | yarn 12 between the package 15 and the yarn feeding bobbin 11 can be made into a continuous state.

  The unit controller 18 monitors whether or not the package 15 is ready to start rotating (step S108). When it becomes a situation where the rotation of the package 15 can be started, the unit control unit 18 executes a start process (step S109 to step S111). For example, when the rotation of the package 15 is interrupted for the yarn joining operation as shown in the flowchart of FIG. 4, the rotation of the package 15 can be resumed when the yarn joining operation by the yarn joining device 37 is completed. . Therefore, the unit control unit 18 monitors whether or not the yarn joining operation by the yarn joining device 37 is completed in step S108, and executes the start process when detecting that the yarn joining operation is completed.

  The starting process will be specifically described. First, the unit controller 18 starts driving the package driving motor 24 to rotate the stopped package 15 in the winding direction (start of the package driving process, step S109).

  Since inertia is acting on the package 15, slipping may occur between the bearing center 23 and the take-up bobbin 14 if the rotational drive of the package drive motor 24 is started rapidly. Therefore, the rotation command unit 54 transmits to the package drive control unit 25 when starting rotation of the package 15 in the winding direction (when starting driving of the package drive motor 24 in the winding direction). The rotational frequency command value to be set is a relatively small value. The rotation command unit 54 gradually increases the command value of the rotation frequency transmitted to the package drive control unit 25 with time, and accelerates the package drive motor 24 to the target rotation frequency. As a result, the package drive motor 24 is gradually accelerated, so that slip between the bearing center 23 and the take-up bobbin 14 can be prevented, and the package 15 can be appropriately accelerated to the target rotational speed.

  In this embodiment, the unit controller 18 has a timer function for measuring time. Accordingly, it can be said that the unit control unit 18 is the timer unit 53. The unit control unit 18 monitors the elapsed time from the start of rotation of the package 15 (step S109) based on the measurement result of the timer unit 53 (time measurement step, step S110). When the unit control unit 18 detects that a predetermined traverse waiting time has elapsed since the rotation of the package 15 is started, the unit control unit 18 transmits a control signal to the traverse control unit 31 to start driving the traverse device 21 ( Start of traverse process, step S111). As a result, the yarn 12 is hooked (threaded) on the yarn guide 27, and the yarn 12 can be guided by the yarn guide 27, and the traverse of the yarn 12 by the yarn guide 27 is started.

  According to the control described above, the rotation of the package 15 that has been stopped can be started, and the traverse of the yarn 12 can be started by threading, so that the winding of the yarn 12 around the package 15 can be appropriately started. .

  Next, the effect by the characteristic structure of the automatic winder of this embodiment is demonstrated in detail.

  As described above, the conventional yarn winding machine performs threading to the yarn guide 27 by the start of rotation of the package 15 at the latest. However, in this case, since the threading is performed in an unstable state where the thread 12 is not sufficiently tensioned, the threading may fail. Therefore, in order to improve the certainty of threading with respect to the thread guide 27, it is considered necessary to perform threading in a state where a sufficient tension is applied to the thread 12.

  The inventor of the present application has paid attention to the fact that a sufficient tension is applied to the yarn 12 wound around the package 15 after a while since the rotation of the package 15 is started. That is, when the winding of the package 15 is started, the rotating package 15 pulls the yarn 12 toward the downstream side (upward in FIG. 1), so that the yarn 12 is in tension (the yarn 12 is stretched). State).

  However, it has been conventionally considered by those skilled in the art that the threading timing is too late after the package 15 starts rotating. That is, if the start of traverse of the yarn 12 is delayed from the start of rotation of the package 15, the yarn 12 is wound around the package 15 without being traversed. As a result, a rod winding 99 as shown in FIG. 10 is formed in the package 15 and the quality of the package 15 is deteriorated. For this reason, in the conventional yarn winding machine, the threading is not performed after the start of the rotation of the package 15.

  As a result of careful examination of the above points, the inventor of the present application, after starting the rotation of the package 15, takes a certain amount of time until the rod winding 99 that has an adverse effect on the quality of the package 15 is formed. I found that it took. That is, the quality of the package 15 is not impaired even if the yarn 12 is not traversed for a while after the rotation of the package 15 is started. According to the experiment by the inventor of the present application, the time taken from the start of rotation of the package 15 until the tension sufficient for threading is applied to the yarn 12 adversely affects the quality of the package 15. It has become clear that it takes less time for the rod winding 99 to be formed. That is, even if the threading is waited until sufficient tension is applied to the thread 12, the quality of the package 15 is not impaired.

  Therefore, as described above, the automatic winder of this embodiment has the yarn guide 27 retracted to the retracted position when the rotation of the package 15 is stopped, and a predetermined traverse waiting time has elapsed after the rotation of the package 15 is started. After that, the driving of the traverse device 21 is started.

  That is, in the state where the rotation of the package 15 is stopped, the yarn 12 is not tensioned and the trajectory of the yarn 12 is not stable. Therefore, the yarn guide 27 is not engaged with the yarn 12 (retracted position). (FIG. 7). When the rotation of the package 15 is started, tension starts to be applied to the yarn 12. However, immediately after the rotation of the package 15 is started, the tension of the yarn 12 is still unstable. Therefore, the yarn guide 27 is kept retracted to the retracted position as shown in FIG. 8 until a predetermined time has elapsed after the rotation of the package 15 is started (step S109 described above). Then, after the rotation of the package 15 is started, it waits until a predetermined traverse waiting time elapses (the above-described step S110), and then starts driving the traverse device 21 (the above-described step S111), as shown in FIG. The yarn guide 27 is moved in the traverse width direction. Thereby, sufficient tension is applied to the thread 12 and the threading can be performed in a state where the track of the thread 12 is stable, so that the certainty of the threading can be improved.

  Of course, if the package 15 continues to rotate without driving the traverse device 21, the yarn 12 is wound one after another without being traversed, and a rod winding 99 is formed so that the quality of the package 15 is lowered. (FIG. 10). In the automatic winder of the present embodiment, the time is measured by the timer unit 53, and the driving of the traverse device 21 is started when the traverse standby time has elapsed after the rotation of the package 15 is started. The state of being wound around the package 15 without being performed does not exceed a certain time. Therefore, the traverse of the yarn 12 by the traverse device 21 can be surely started before the quality of the package 15 is adversely affected.

  The appropriate value for the traverse waiting time varies depending on the type of yarn 12 and the yarn winding speed. Therefore, the automatic winder of the present embodiment is configured to be able to change the traverse standby time as necessary. Specifically, for the machine control device provided in the automatic winder, the operator inputs or changes the traverse standby time, whereby all the yarn winding units 10 provided in the automatic winder are The traverse waiting time can be set all at once. Of course, the traverse standby time may be set individually for each yarn winding unit 10. Further, the traverse waiting time may be automatically set according to the winding condition.

  Since the automatic winder of the present embodiment is configured to directly drive the package 15, it is possible to start driving the traverse device 21 after reliably starting the rotation of the package 15. In addition to the method of directly driving the package 15 as in this embodiment, the method of rotating the package 15 includes, for example, a configuration in which the package 15 is driven and rotated by rotating the contact roller 20. However, in the case of the configuration in which the package 15 is driven to rotate, slip may occur between the package 15 and the contact roller 20, and therefore the rotation of the package starts just because the rotation drive of the contact roller 20 is started. Not necessarily. In this embodiment, since the package 15 is directly rotated by the package drive motor 24, the package 15 can be reliably rotated by starting the drive of the package drive motor 24. Therefore, the threading can be performed in a state in which a sufficient tension is applied to the thread 12 to perform the threading.

  By the way, when the upper thread is sucked by the upper thread suction port 50 in step S104 of FIG. 4, the suction force of the upper thread suction port 50 acts on the surface of the package 15, so Even the portion that is not the yarn end (the middle portion of the yarn wound around the package 15) may be sucked into the upper yarn suction port 50, resulting in a state as shown in FIG. In this way, the state where even the extra yarn on the surface layer of the package 15 has been sucked and captured by the upper yarn suction port 50 is referred to as “double extraction”.

  As described above, since Patent Document 1 is configured to move the yarn guide in a state where the yarn of the package is sucked, the yarn guide is caught by the double threaded extra yarn, and the yarn guide is There was a risk of damage.

  In the automatic winder of the present embodiment, when the yarn 12 of the package 15 is sucked by the upper yarn suction port 50, the yarn guide 27 is retracted to the retracted position, so that the yarn guide 27 is double-extracted. There is no risk of being damaged by being caught on the thread.

  If the upper thread pipe arm 49 is rotated downward with the double outlet as shown in FIG. 6, the extra thread may be pulled out from the package 15 and introduced into the yarn joining device 37. . When the yarn joining operation by the yarn joining device 37 is performed in this state, an inappropriate coupling portion is formed. When the rotation of the package 15 in the winding direction is started in this state, the inappropriate coupling portion is wound onto the package 15. In the configuration of Patent Document 1, since the threading is completed at the time of the yarn splicing operation, when the rotation of the package is started after the yarn splicing operation is completed, the inappropriate coupling portion may pass through the yarn guide. is there. At this time, an improper coupling portion may be caught by the yarn guide and the yarn guide may be damaged. In addition, since the yarn guide catches the yarn during double squeezing, there is a possibility that the yarn guide is broken or a package is defective.

  The automatic winder according to the present embodiment is configured to detect an inappropriate coupling portion by the yarn monitoring device 38 when the rotation of the package 15 is started after the yarn joining operation is completed. When an inappropriate coupling portion is detected by the yarn monitoring device 38, the unit control unit 18 immediately operates the cutter 42 to cut the yarn 12. According to this, even if an inappropriate coupling portion is formed by the yarn joining operation, the yarn 12 can be immediately cut by the cutter 42. In the automatic winder of the present embodiment, the threading is not performed until the traverse standby time elapses after the package 15 starts rotating. High nature. As described above, even if an inappropriate coupling portion is formed on the yarn 12 by the yarn splicing operation, the yarn 12 can be cut before threading. It is possible to prevent the yarn guide from being damaged by being caught.

  As described above, the automatic winder according to the present embodiment includes the package drive motor 24, the yarn guide 27, and the unit controller 18. The package drive motor 24 rotates the package 15 around which the yarn 12 is wound from a stopped state. The yarn guide 27 traverses the yarn 12 by being reciprocally driven in a state where the yarn 12 wound around the package 15 is guided (engaged with the yarn 12). While the rotation of the package 15 is stopped, the unit controller 18 is in a state where the yarn guide 27 does not guide the yarn 12 (a state where the yarn 12 is not engaged with the yarn guide 27). Stop driving. The unit controller 18 starts the reciprocating drive of the yarn guide 27 after starting the rotation of the package 15 in the winding direction, thereby performing threading to the yarn guide 27 and traversing by the yarn guide 27. The package drive motor 24 and the yarn guide 27 are controlled to start.

  As described above, by starting the traverse of the yarn 12 after the rotation of the package 15 in the winding direction is started, the thread guide 27 can be threaded with tension applied to the yarn 12. . Thereby, the success rate of the threading with respect to the thread guide 27 can be improved.

  The automatic winder according to the present embodiment includes a traverse drive motor 29 for reciprocating the yarn guide 27 separately from the package drive motor 24. The unit control unit 18 starts driving the traverse driving motor 29 after starting driving the package driving motor 24.

  Thus, by providing the drive source for the rotation of the package 15 and the drive source for the traverse device 21 independently, it is possible to easily realize the control of performing threading after the rotation of the package 15 is started. Can do.

  The automatic winder of this embodiment further includes a timer unit 53 that measures time. The unit control unit 18 controls the yarn guide 27 so as to start traversing by the yarn guide 27 when the timer unit 53 measures the passage of a predetermined time.

  As described above, the threading can be performed after a sufficient tension is applied to the yarn 12 wound around the package 15 by the simple control of starting the traverse of the yarn 12 when a predetermined time has elapsed. Moreover, since the traverse start timing is controlled by time, the traverse of the yarn 12 can be started within a predetermined time. Thereby, the traverse of the yarn 12 can be surely started before the rod winding that affects the quality of the package 15 is formed.

  In the yarn winding machine according to this embodiment, the package drive motor 24 directly drives the package 15 to rotate.

  As described above, by directly driving the package 15 to rotate, the package 15 can be reliably rotated by starting to drive the package drive motor 24. Accordingly, threading can be performed after the rotation of the package 15 is reliably started.

  In the automatic winder of the present embodiment, the yarn guide 27 includes a yarn hooking groove 30 that opens one side in the traverse direction of the yarn 12.

  Thereby, the threading can be easily performed only by moving the thread guide 27 in the traverse direction.

  The yarn winding method of the present embodiment includes a package driving process, a traverse process, and a starting process. In the winding process, the package 15 on which the yarn 12 is wound is rotated from the stopped state. In the traverse process, the yarn 12 is traversed by reciprocatingly driving the yarn guide 27 in a state where the yarn 12 wound around the package 15 is guided. In the starting step, the reciprocating drive of the yarn guide 27 is stopped while the rotation of the package 15 is stopped, and the reciprocating drive of the yarn guide 27 is started after the rotation of the package 15 in the winding direction is started. .

  The yarn winding method of the present embodiment includes a time measuring step for measuring time. In this yarn winding method, the traverse process is started when it is measured that a predetermined time has elapsed in the time measurement process.

  Next, a second embodiment of the present invention will be described. In the description of the present embodiment, the same or similar members as those of the above-described embodiment may be denoted by the same reference numerals and the description thereof may be omitted.

  The automatic winder according to the second embodiment is configured to start driving the traverse device 21 on the condition that the rotation amount of the package 15 reaches a predetermined rotation amount after the rotation of the package 15 starts.

  That is, if the rotation amount after the rotation of the package 15 is equal to or greater than the predetermined rotation amount, the yarn 12 wound around the package 15 is sufficiently tensioned. I can judge. Therefore, after the rotation of the package 15 is started, the driving of the traverse device 21 is started on the condition that the rotation amount of the package 15 has reached a predetermined rotation amount, so that the threading to the yarn guide 27 is ensured. Can be improved.

  More specifically, it is as follows. The unit controller 18 is configured to measure the amount of rotation of the package 15 by the package rotation sensor 26. That is, since the package rotation sensor 26 outputs a pulse signal every time the package 15 rotates by a predetermined angle, the unit controller 18 detects how much the package 15 has rotated by counting the pulse signal. be able to.

  The unit controller 18 keeps the yarn guide 27 in the retracted position when the rotation of the package 15 is stopped. When the unit controller 18 starts to rotate the package 15, the unit controller 18 starts counting the pulse signals output from the package rotation sensor 26. When it is detected that the number of pulse signals output from the package rotation sensor 26 has reached a predetermined number after starting the counting, the unit control unit 18 determines that the rotation amount of the package 15 has reached a predetermined amount. Then, driving of the traverse device 21 is started. Thereby, since the threading to the thread guide 27 can be performed in a state where a sufficient tension is applied to the thread 12, the success rate of the threading can be improved.

  As described above, the automatic winder of the second embodiment is configured as follows. That is, the automatic winder of the second embodiment includes a package rotation sensor 26 that detects the rotation of the package 15. The unit controller 18 controls the yarn guide 27 so as to start traversing by the yarn guide 27 when the rotation amount of the package 15 acquired based on the detection result of the package rotation sensor 26 reaches a predetermined value. To do.

  The yarn winding method using the automatic winder according to the second embodiment is performed as follows. That is, the yarn winding method includes a rotation detection step of detecting the rotation of the package 15 by the package rotation sensor 26. In this yarn winding method, the traverse process is started when the rotation amount of the package 15 acquired based on the detection result in the rotation detection process reaches a predetermined value.

  That is, when the amount of rotation of the package 15 reaches a predetermined value, it can be determined that a sufficient tension is applied to the yarn 12 wound around the package 15. Therefore, as described above, the timing of threading can be appropriately controlled with a simple configuration in which the amount of rotation of the package 15 is detected.

  Next, a modification of the second embodiment will be described. In the description of the present modification, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals and the description thereof may be omitted.

  In the above embodiment, the rotation amount of the package 15 is detected based on the output of the package rotation sensor 26. However, the automatic winder of this modified example is configured to detect the package 15 based on the output of the package rotation sensor 26. It is comprised so that rotation speed may be calculated | required. That is, since the package rotation sensor 26 outputs a pulse signal every time the package 15 rotates by a predetermined angle, the unit controller 18 counts the pulse signal output by the package rotation sensor 26 per unit time, thereby Fifteen rotational speeds can be calculated.

  That is, if the package 15 in a stopped state starts to rotate and the rotational speed of the package 15 reaches a predetermined rotational speed, the yarn 12 wound around the package 15 is sufficiently tensioned. It can be determined that it is in a suspended state. Therefore, after the rotation of the package 15 is started, the driving of the traverse device 21 is started on the condition that the rotation speed of the package 15 has reached a predetermined rotation speed. Can be improved.

  In this modification, when the unit controller 18 starts to rotate the package 15, the unit controller 18 calculates the rotational speed of the package 15 in real time based on the pulse signal output from the package rotation sensor 26. When it is detected that the rotational speed of the package 15 has reached a predetermined rotational speed, the unit controller 18 starts driving the traverse device 21. Thereby, since the threading to the thread guide 27 can be performed in a state where a sufficient tension is applied to the thread 12, the success rate of the threading can be improved.

  As described above, the automatic winder of this modification is configured as follows. That is, the unit controller 18 starts the traverse by the yarn guide 27 when the rotational speed of the package 15 acquired based on the detection result of the package rotation sensor 26 reaches a predetermined value. To control.

  The yarn winding method using the automatic winder according to this modification is performed as follows. That is, the traverse process is started when the rotation speed of the package 15 acquired based on the detection result in the rotation detection process reaches a predetermined value.

  That is, when the rotational speed of the package 15 reaches a predetermined value, it can be determined that the yarn 12 wound around the package 15 is sufficiently tensioned. Therefore, as described above, the timing of threading can be appropriately controlled with a simple configuration in which the rotational speed of the package 15 is detected.

  Next, a third embodiment of the present invention will be described. In the description of the present embodiment, the same or similar members as those of the above-described embodiment may be denoted by the same reference numerals and the description thereof may be omitted.

  The automatic winder according to the third embodiment is provided with a traverse device on the condition that the rotation frequency command value output from the rotation command unit 54 to the package drive control unit 25 becomes equal to or greater than a predetermined value after the rotation of the package 15 is started. 21 is started.

  That is, as described above, when the rotation command unit 54 starts to rotate the package 15 in the stopped state, the rotation frequency command value transmitted to the package drive control unit 25 is gradually increased. Thereby, the package drive motor 24 can be gradually accelerated. Since the package 15 is rotationally driven by the package drive motor 24, the rotational frequency command value transmitted from the rotation command unit 54 to the package drive control unit 25 is the current rotational speed (rotational frequency) of the package 15. It can be said that it shows.

  Therefore, the rotation speed (rotation frequency) of the package 15 can be known by acquiring the rotation frequency command value output by the rotation command unit 54. In the third embodiment, when the rotation driving of the package 15 is started, the unit control unit 18 monitors the rotation frequency command value transmitted from the rotation command unit 54 to the package drive control unit 25. When it is detected that the command value is equal to or higher than the predetermined rotation frequency, the unit controller 18 starts driving the traverse device 21. Thereby, since the threading to the thread guide 27 can be performed in a state where a sufficient tension is applied to the thread 12, the success rate of the threading can be improved.

  As described above, the automatic winder according to the third embodiment includes the rotation command unit 54 that transmits the rotation frequency command value to the package drive control unit 25. The unit controller 18 controls the yarn guide 27 so that the traverse by the yarn guide 27 is started when the command value transmitted by the rotation command unit 54 reaches a predetermined value.

  The yarn winding method using the automatic winder according to the third embodiment is performed as follows. In other words, this yarn winding method includes a rotation command step of transmitting a command value of the rotation frequency to the package drive control unit 25. In this yarn winding method, the traverse process is started when the command value reaches a predetermined value.

  By performing control based on a command value to the package drive control unit 25, for example, control according to the rotation speed of the package 15 can be realized without using a sensor such as the package rotation sensor 26 of the second embodiment. Can do. Thereby, after starting the rotation of the package 15, the control of starting the traverse when the rotational speed of the package 15 becomes equal to or higher than a predetermined speed can be easily realized.

  The preferred embodiments and modifications of the present invention have been described above, but the above configuration can be modified as follows, for example.

  The configuration of the present invention is not limited to an automatic winder, and can be widely applied to other yarn winding machines such as a rewinding machine and a fine spinning machine (such as an air spinning machine and an open-end spinning machine).

  In the above description, the pivot axis of the traverse arm 28 is substantially parallel to the yarn path of the yarn 12 in the vicinity of the yarn guide 27, and the yarn guide 27 is driven to reciprocate in a plane substantially orthogonal to the yarn path. It was. However, the layout of the traverse device 21 is not limited to this. For example, as shown in FIG. 4 of Japanese Patent Application Laid-Open No. 2010-42904, the yarn guide is reciprocally driven in a plane substantially parallel to the yarn path. It is good also as a layout.

  The traverse device 21 is not limited to an arm-type traverse device, and may be, for example, a belt-type traverse device or a blade-type traverse device.

  Although the yarn guide 27 has a hook shape, the present invention is not limited to this, and for example, as in Patent Document 1, a finger shape having an open tip may be used.

  The yarn winding unit of the above embodiment is configured not to include a mechanical brake mechanism for stopping the package 15, but the configuration is not limited thereto, and the brake mechanism may be provided.

  In the second embodiment, the package rotation sensor 26 detects the rotation of the package 15 by detecting the rotation of the bearing center 22 that sandwiches the package 15. However, the configuration of the rotation detection unit is not limited to this, for example, by detecting the rotation of the bearing center 23, the rotation of the contact roller 20 that rotates in contact with the package 15, and / or the rotation of the package drive motor 24. You may comprise so that rotation of the package 15 may be detected. Further, the rotation detection unit is not limited to the rotary encoder, and may be an angular velocity sensor, for example.

  In the modification of the second embodiment, the rotational speed of the package 15 is calculated. The rotation speed calculated at this time may be any of, for example, an angular speed, a rotation frequency (the number of rotations per unit time), a peripheral speed, and the like of the package 15.

  In the above embodiment, the tension applying device 36 applies a predetermined tension to the yarn 12. However, for example, when winding a loosely wound package (a fluffy package) or the like, a low tension (a state where the engagement of the comb teeth of the tension applying device 36 is shallow) or a no tension (a tension applied) The yarn 12 may be wound up (soft winding) in a state where the device 36 is not operated or a configuration in which the tension applying device 36 is omitted). In a yarn winding machine that performs soft winding in this way, the tension applied to the yarn tends to be insufficient, and the success rate of threading is particularly low. Therefore, when the configuration of the present invention is applied to a yarn winding machine that performs soft winding as described above, the effect of the present invention of improving the success rate of threading can be particularly preferably exhibited.

  In the above embodiment, a drive source (package drive motor 24) for rotating the package 15 and a drive source (traverse drive motor 29) for reciprocating the yarn guide 27 are provided separately. However, instead of this, both the package and the yarn guide may be driven by one drive source. In this case, for example, a clutch or the like is provided between the yarn guide and the drive source. Then, when the rotation of the package is started by the drive source, the clutch is disconnected, and after a while, the clutch is connected and the yarn guide is started. If comprised in this way, the idea of this invention of performing threading after the rotation of a package is started can be implement | achieved by one drive source.

  In the above embodiment, the package drive control unit 25 and the traverse control unit 31 are provided separately from the unit control unit 18, respectively. However, at least one of the package drive control unit 25 and the traverse control unit 31 may be provided in the unit control unit 18.

  In the above embodiment, the package 15 is directly driven to rotate by the package drive motor 24. However, the yarn winding unit 10 may include a motor that directly rotates the contact roller 20 and is configured to rotate the package 15 in a driven manner.

12 Yarn 15 Package 18 Control unit 24 Package drive motor (first drive unit)
27 Yarn Guide 29 Traverse Drive Motor (Second Drive Unit)

Claims (11)

A first drive unit for rotating a package around which the yarn is wound from a stopped state;
A yarn guide that traverses the yarn by being driven to reciprocate while guiding the yarn wound around the package;
While the rotation of the package is stopped, the reciprocating drive of the yarn guide is stopped, and the reciprocating drive of the yarn guide is started after the rotation of the package in the winding direction is started. A control unit for controlling the first drive unit and the yarn guide;
A yarn winding machine comprising: The yarn winding machine according to claim 1,
A yarn winding machine comprising a second drive unit that reciprocally drives the yarn guide separately from the first drive unit. The yarn winding machine according to claim 1 or 2,
A timer for measuring time,
The yarn winding machine, wherein the control unit controls the yarn guide to start traversing by the yarn guide when the timer measures the elapse of a predetermined time. The yarn winding machine according to claim 1 or 2,
A rotation detection unit for detecting the rotation of the package;
The control unit causes the yarn guide to start traversing by the yarn guide when the rotation amount or rotation speed of the package acquired based on the detection result of the rotation detection unit reaches a predetermined value. A yarn winding machine characterized by controlling. The yarn winding machine according to claim 1 or 2,
A rotation command unit that transmits a rotation speed command value to the first drive unit;
The yarn winding machine, wherein the control unit controls the yarn guide to start traversing by the yarn guide when a command value transmitted by the rotation command unit reaches a predetermined value. A yarn winding machine according to any one of claims 1 to 5,
The yarn winding machine, wherein the first driving unit directly drives the package to rotate. A yarn winding machine according to any one of claims 1 to 6,
The yarn winding machine, wherein the yarn guide includes a yarn hooking groove that opens one side in the traverse direction of the yarn. A package driving process for rotating the package around which the yarn is wound from a stopped state;
A traverse step of traversing the yarn by reciprocatingly driving a yarn guide in a state in which the yarn wound around the package is guided;
A step of stopping the reciprocating drive of the yarn guide while stopping the rotation of the package, and starting the reciprocating drive of the yarn guide after starting the rotation of the package in the winding direction;
A yarn winding method comprising: The yarn winding method according to claim 8,
Including a time measurement process to measure time,
The yarn winding method, wherein the traverse process is started when it is measured that a predetermined time has elapsed in the time measurement process. The yarn winding method according to claim 8,
A rotation detecting step for detecting rotation of the package;
The yarn winding method, wherein the traverse process is started when a rotation amount or a rotation speed of the package acquired based on a detection result in the rotation detection process reaches a predetermined value. The yarn winding method according to claim 8,
Including a rotation command step of transmitting a command value of a rotation speed to a drive unit for rotating the package;
The yarn winding method, wherein the traverse process is started when the command value reaches a predetermined value.

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