JP2016016969A - Yarn storage device, yarn take-up unit, and yarn take-up machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn storage device, a yarn take-up unit, and a yarn take-up machine capable of rotating a yarn storage roller stably.SOLUTION: In a yarn storage device 11, a first drive part 50 comprises: a first stator 51 located inside a yarn storage roller 40, extending along a rotary shaft direction of the yarn storage roller 40, and disposed so as to be coaxial with a rotary shaft; and a first rotor 53 fixed inside the yarn storage roller 40 at a position surrounding the first stator 51. A second drive part 70 comprises: a second stator 71 located inside the yarn storage roller 40 and fixed to the tip of the first stator 51; and a second rotor 72 fixed to a yarn threading member 60 and located inside the second stator 71. At least two bearing members 55 and 56 for allowing the yarn storage roller 40 to rotate freely with respect to the first stator 51 are disposed between the first stator 51 and a support part 42.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a yarn storage device, a yarn winding unit, and a yarn winding machine.

  BACKGROUND ART A yarn winding machine such as a spinning machine includes a yarn storage device that winds a yarn around a rotating yarn storage roller and temporarily stores the yarn. For example, the yarn storage device described in Patent Document 1 includes a yarn storage roller around which a yarn is wound, and a yarn hooking member that winds the yarn around the yarn storage roller. The yarn accumulating roller is attached to the drive shaft of the electric motor and is rotated by the electric motor. One of the yarn hooking member and the yarn accumulating roller is provided with a permanent magnet, and the other is provided with a magnetic hysteresis material. As a result, a resistance torque that resists the relative rotation of the yarn hooking member with respect to the yarn accumulating roller is generated, and the yarn hooking member rotates integrally with the yarn accumulating roller by the resistance torque. When a force that overcomes the resistance torque is applied to the yarn hooking member, the yarn hooking member rotates relative to the yarn accumulating roller.

JP 2010-77576 A

  In the conventional yarn storage device, in order to adjust the tension applied to the yarn, the rotation resistance of the yarn hooking member with respect to the yarn storage roller is adjusted manually. For example, in a spinning machine in which a plurality of spinning units are arranged side by side, when the rotational resistance varies in each spinning unit, the rotational resistance must be adjusted for each spinning unit, which is very complicated work. It was.

  An object of the present invention is to provide a yarn storage device, a yarn winding unit, and a yarn winding machine that can stably rotate a yarn storage roller.

  A yarn storage device according to one aspect of the present invention includes a yarn storage roller around which a yarn is wound, a yarn guide member that is rotatable with respect to the yarn storage roller, a first drive unit that rotationally drives the yarn storage roller, and a yarn A second drive unit that rotationally drives the guide member, and the yarn storage roller includes a yarn storage unit around which the yarn is wound, and a support unit provided inside the yarn storage unit, and the first drive unit Is located inside the yarn accumulating part, extends along the rotation axis direction of the yarn accumulating roller, and is arranged so as to be coaxial with the rotation axis, and the yarn at a position surrounding the first stator. A first rotor fixed to the inside of the storage unit, and the second drive unit is positioned inside the yarn storage unit and fixed to the tip of the first stator, and the yarn guide member A second rotor that is fixed, and the support portion includes a tip of the first stator. In addition, the yarn storage roller is disposed between the first rotor and the second stator and supported by the first stator, and the yarn storage roller is rotatable with respect to the first stator between the first stator and the support portion. At least two bearing members are arranged.

  In this yarn accumulating device, the first drive unit is configured such that the first rotor rotates around the first stator located inside the yarn accumulating unit. That is, the first drive unit is a so-called outer rotor type motor. Therefore, the 1st stator which does not rotate even if a yarn storage roller rotates exists inside a yarn storage part. Further, the yarn guide member can be rotationally driven coaxially with the rotation shaft of the yarn accumulating roller. Therefore, in the yarn storage device, the yarn storage roller and the yarn hooking member can be driven independently. As a result, since the rotation of the yarn guide member can be adjusted by controlling the drive of the second drive unit, the tension applied to the yarn can be easily adjusted. In the yarn accumulating device, since at least two bearing members that allow the yarn accumulating roller to rotate with respect to the first stator are arranged between the first stator and the support portion, the yarn accumulating roller is stabilized. Can be rotated.

  In one embodiment, the first driving unit may be a stepping motor. Thereby, since it becomes possible to control the 1st drive part with fixed torque, a yarn accumulating roller can be rotated stably. As a result, the yarn can be stably stored in the yarn storage device.

  In one embodiment, the yarn accumulating device includes a control unit that controls driving of the first drive unit, and the control unit may stop driving the first drive unit when the first drive unit has stepped out. Good. Thereby, for example, it can prevent that the yarn of a different state is stored, and can control the fall of yarn quality.

  In one embodiment, the yarn accumulating device includes a detection unit that detects a step-out of the first drive unit, and the control unit performs the first drive when the step-out of the first drive unit is detected by the detection unit. The driving of the part may be stopped. Thereby, in the yarn accumulating device, the step-out of the first drive unit can be detected more reliably.

  In one embodiment, the second drive unit may be capable of rotating the yarn guide member at a speed equal to or higher than the rotational speed of the yarn accumulating roller. When starting the winding of the yarn in the yarn accumulating roller, it may take time for the rotational speed of the first drive unit to reach a predetermined speed. At this time, since the tension of the yarn is low, the yarn may be loosely wound around the yarn accumulating roller. By starting the winding of the yarn around the yarn storage roller, the yarn guide member can be wound at a high speed by making the rotation speed of the yarn guide member faster than the rotation speed of the yarn storage roller. Tension can be given. Therefore, it is possible to suppress the yarn from being loosely wound around the yarn accumulating roller.

  A yarn winding unit according to one aspect of the present invention includes the above-described yarn storage device, a spinning device that generates a yarn wound around a yarn storage roller of the yarn storage device, and a yarn drawn from the yarn storage roller onto a package. A winding device.

  Since the yarn winding unit includes the above-described yarn storage device, the yarn spun from the spinning device can be stably pulled out, and the yarn tension in the winding device can be adjusted to adjust the yarn tension in the winding device. Can prevent fluctuations in tension. Therefore, in the yarn winding unit, the quality of the package can be improved.

  In one embodiment, the yarn winding unit may include a unit control unit that stops the operation of the spinning device when the first driving unit steps out. Thereby, it is possible to suppress fluctuations in the drawing amount (drawing speed) of the yarn generated in the spinning device, and it is possible to suppress fluctuations in the tension of the yarn wound in the winding device. Therefore, it is possible to suppress a decrease in yarn quality.

  In one embodiment, the yarn winding unit may include a notification unit that notifies that the first drive unit has stepped out when the first drive unit has stepped out. Thereby, the operator can be informed of the yarn winding unit provided with the yarn storage device in which the step-out occurs.

  In one embodiment, the yarn storage device includes a control unit that controls the driving of the second drive unit, and the control unit controls the driving of the second drive unit during winding of the yarn in the winding device to control the yarn. You may change the rotational speed of a guide member. When forming a package in the winding device, a good package can be formed by increasing the winding tension when the winding diameter is small and decreasing the winding tension as the winding diameter increases. Therefore, a good package can be formed by changing the rotation of the yarn hooking member so that the tension is increased at the initial stage of winding of the package and is decreased at the end of winding.

  A yarn winding machine according to an aspect of the present invention includes the plurality of yarn winding units and a setting unit that sets a tension of a yarn wound in a winding device of each yarn winding unit.

  In this yarn winding machine, the setting of the tension of the yarn wound in the winding device of each winding unit, that is, the setting of the second drive unit that drives the yarn hooking member can be performed simultaneously. Therefore, the tension can be easily set in the yarn winding machine.

  According to the present invention, the yarn accumulating roller can be stably rotated.

It is a figure which shows the spinning machine which concerns on one Embodiment. It is a side view of the spinning unit of the spinning machine of FIG. It is a figure which shows the cross-sectional structure of a thread | yarn storage apparatus. It is a figure which shows the cross-sectional structure along the IV-IV line in FIG. It is a figure which shows the structure of a spinning machine.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted. The dimensional ratios in the drawings do not necessarily match those described.

  As shown in FIG. 1, a spinning machine (yarn winding machine) 1 includes a plurality of spinning units (yarn winding units) 2, a yarn splicing carriage 3, a first end frame 4, a second end frame 5, A machine controller (setting unit) 6.

  The plurality of spinning units 2 are arranged in a line, and each spinning unit 2 generates the spun yarn Y and winds it on the package P. The yarn splicing cart 3 performs a yarn splicing operation in the spinning unit 2 from which the spun yarn Y has been cut. The first end frame 4 accommodates an air supply source for generating a swirling air flow or the like in each part of the spinning unit 2 and / or a suction source or the like for generating a suction flow in each part of the spinning unit 2. . The second end frame 5 accommodates a prime mover and the like for supplying power to each part of the spinning unit 2. The machine controller 6 controls the operation of the entire spinning machine 1.

  In the following description, in the path along which the spun yarn Y travels (that is, the yarn path), the side on which the spun yarn Y is generated is referred to as the upstream side, and the side on which the spun yarn Y is wound is referred to as the downstream side. The side on which the yarn path is located with respect to the yarn joining cart 3 is referred to as a front side, and the opposite side is referred to as a rear side. Here, a work passage (not shown) extending in the arrangement direction of the plurality of spinning units 2 is provided on the front side of the spinning machine 1. The operator can operate and monitor each spinning unit 2 from the work path.

  As shown in FIGS. 1 and 2, each spinning unit 2 includes, in order from the upstream side, a draft device 7, an air spinning device 8, a yarn defect detection unit 9, a tension sensor 10, and a yarn storage device 11. , A waxing device 12 and a winding device 13. These devices are directly or indirectly supported by the machine frame 14 so that the upstream side is the upper side in the machine height direction (that is, the downstream side is the lower side in the machine height direction). Has been.

  The draft device 7 drafts the fiber bundle S. In the draft device 7, a back roller pair 7a, a third roller pair 7b, and an apron belt 7c are laid on each roller in order from the upstream side (the side on which the fiber bundle S is supplied in the path through which the fiber bundle S is sent). The middle roller pair 7d and the front roller pair 7e are provided.

  The air spinning device 8 generates a spun yarn Y by twisting the fiber bundle S drafted by the draft device 7 by a swirling flow of air. The yarn defect detection unit 9 monitors the traveling spun yarn Y between the pneumatic spinning device 8 and the yarn accumulating device 11. The yarn defect detection unit 9 transmits a yarn defect detection signal to the unit controller (unit control unit) 15 when a yarn defect is detected. The yarn defect detection unit 9 detects, for example, an abnormal thickness of the spun yarn Y and / or foreign matter contained in the spun yarn Y as a yarn defect.

  The tension sensor 10 measures the tension of the traveling spun yarn Y between the pneumatic spinning device 8 and the yarn storage device 11 and transmits a tension measurement signal to the unit controller 15. The yarn storage device 11 stores the traveling spun yarn Y between the pneumatic spinning device 8 and the winding device 13. The yarn accumulating device 11 retains the spun yarn Y sent from the air spinning device 8 during the yarn splicing operation by the yarn splicing carriage 3, etc. A function of preventing loosening and a function of adjusting the tension of the spun yarn Y in the winding device 13 and preventing the fluctuation of the tension of the spun yarn Y in the winding device 13 from being transmitted to the pneumatic spinning device 8. ing.

  The waxing device 12 applies wax to the traveling spun yarn Y between the yarn storage device 11 and the winding device 13. The unit controller 15 is provided for each spinning unit 2 and controls the operation of the spinning unit 2. The unit controller 15 is controlled by the machine controller 6.

  The winding device 13 forms the package P by winding the spun yarn Y generated by the pneumatic spinning device 8. The winding device 13 includes a cradle arm 21, a winding drum 22, and a traverse device 23. The cradle arm 21 is swingably supported by a support shaft 24, and the surface of the bobbin B or package P that is rotatably supported is brought into contact with the surface of the winding drum 22 with an appropriate pressure. The winding drum 22 is driven by an electric motor (not shown) provided for each spinning unit 2 to rotate the bobbin B or package P that is in contact therewith. The traverse device 23 is driven by the shaft 25 shared by the plurality of spinning units 2 and traverses the spun yarn Y with a predetermined width to the rotating bobbin B or package P.

  The yarn joining cart 3 travels to the spinning unit 2 from which the spun yarn Y has been cut, and performs a yarn joining operation in the spinning unit 2. The yarn joining cart 3 includes a splicer 26, a suction pipe 27, and a suction mouth 28. The suction pipe 27 is rotatably supported by the support shaft 31 and sucks and captures the yarn end of the spun yarn Y from the pneumatic spinning device 8 and guides it to the splicer 26. The suction mouth 28 is rotatably supported by the support shaft 32, and sucks and captures the yarn end of the spun yarn Y from the winding device 13 and guides it to the splicer 26. The splicer 26 performs yarn splicing between the guided yarn ends.

  A touch panel display (notification unit) D is connected to the machine controller 6. The touch panel display D displays information relating to various settings of the spinning machine 1 and information relating to the operating state of the spinning machine 1 and accepts operations from the operator. The touch panel display D functions as a display unit and an input unit. The touch panel display D displays a display screen based on display information output from the machine controller 6. The touch panel display D outputs operation information to the machine controller 6 when a display screen is operated by an operator.

  The above-described yarn storage device 11 will be described in more detail. 3 and 4, the yarn accumulating device 11 includes a yarn accumulating roller 40, a first motor (first driving unit) 50, a yarn hooking member (yarn guiding member) 60, and a second motor ( 2nd drive part) 70.

  The yarn accumulating roller 40 has a yarn accumulating portion 41 and a support portion 42. The spun yarn Y is wound around the outer peripheral surface of the yarn storage unit 41. The yarn storage portion 41 has a substantially cylindrical shape, and includes a base end portion 41a that is a winding start side of the spun yarn Y and a front end portion 41b that is a side where the spun yarn Y is unwound. A proximal end taper portion 43 is provided at the proximal end portion 41a. The proximal end taper portion 43 is formed so that the outer diameter increases from the proximal end portion 41a toward the upstream side. A tip taper portion 44 is provided at the tip portion 41b. The tip tapered portion 44 is formed so that the outer diameter increases from the tip portion 41b toward the downstream side. In this embodiment, for example, as shown in FIG. 3, the outer peripheral surface of the portion between the base end portion 41a and the tip end portion 41b has the same diameter. However, a surface having at least one taper angle may be formed on the outer peripheral surface of the portion. Further, a slit or the like may be formed on the surface of the yarn storage portion 41.

  As shown in FIG. 3, the support portion 42 is provided inside the yarn storage portion 41. The support portion 42 is located at a substantially central portion in the rotation axis direction of the yarn storage portion 41 (hereinafter simply referred to as the rotation axis direction), and protrudes inward from the inner surface 41s. Thereby, the yarn accumulating roller 40 has a substantially H shape in cross-sectional shape along the rotation axis direction. A circular hole 42 h is formed in the support portion 42. The center of the hole 42 h coincides with the rotation axis of the yarn accumulating roller 40. The support portion 42 divides the inside of the yarn accumulating portion 41 into a first region A1 close to the base end portion 41a and a second region A2 close to the distal end portion 41b. The support portion 42 is supported by a first stator 51 described later.

  The first motor 50 rotates the yarn accumulating roller 40. The first motor 50 is an outer rotor type stepping motor. The first motor 50 is disposed inside the yarn storage unit 41. Specifically, the first motor 50 is disposed in the first region A1. The first motor 50 includes a first stator 51, a first stator 52, a first rotor 53, and a first rotor 54.

  The first stator 51 has a cylindrical shape, extends along the rotation axis direction, and is arranged so as to be coaxial with the rotation axis. The base end portion of the first stator 51 is fixed to the base portion BS. The base part BS is fixed to the machine base frame 14. The front end portion of the first stator 51 is located in the hole 42 h of the support portion 42. Two bearing members 55 and 56 are provided between the first stator 51 and the support portion 42. The bearing members 55 and 56 are arranged at a predetermined interval in the rotation axis direction. As the bearing members 55 and 56, for example, a bearing or a bush can be used. The yarn storage portion 41 is provided so as to be rotatable with respect to the first stator 51 by the bearing members 55 and 56. A flyer shaft 61, which will be described later, is inserted into the hollow portion 51h of the first stator 51.

  The first stator 52 has a cylindrical shape and is disposed so as to surround the outer periphery of the first stator 51. The first stator 52 is shorter than the first stator 51 in the rotation axis direction. The base end portion of the first stator 52 is fixed to the base portion BS. The first stator 52 may be fixed to the first stator 51. That is, the first stator 52 only needs to be fixed to at least one of the base portion BS and the first stator 51. As shown in FIG. 4, irregularities 52 a are continuously formed on the outer peripheral surface of the first stator 52 along the circumferential direction. A coil (not shown) is wound around the first stator 52. The coil is electrically connected to a motor driver (control unit) 16 shown in FIG.

  The first rotor 53 is a permanent magnet, for example, and has a cylindrical shape. The first rotor 53 is disposed in a position surrounding the first stator 51 and the first stator 52, that is, in a region where the base end portion 41a is present. The first rotor 53 is fixed to the inner surface 41 s of the yarn storage unit 41.

  The first rotor 54 has a cylindrical shape and is fixed inside the first rotor 53. On the inner peripheral surface of the first rotor 54, irregularities 54a are continuously formed along the circumferential direction. The unevenness 54a (inner peripheral surface) of the first rotor 54 is opposed to the unevenness 52a (outer peripheral surface) of the first stator 52 at a predetermined interval. The first rotor 54 is made of a material different from that of the first rotor 53. The material of the first rotor 54 is preferably a material that can be easily processed when forming the unevenness 54a.

  The yarn hooking member 60 is provided on the side closer to the winding device 13 with respect to the yarn accumulating roller 40 (a region where the tip portion 41b is present), and is rotatable with respect to the yarn accumulating roller 40. The yarn hooking member 60 hooks the spun yarn Y and winds it around the yarn accumulating roller 40. The yarn hooking member 60 has a flyer shaft 61 and a flyer 62.

  The flyer shaft 61 extends along the rotation axis direction. The rotation axis of the flyer shaft 61 is coaxial with the rotation axis of the yarn storage unit 41. FIG. 3 shows a configuration in which the flyer shaft 61 extends to the proximal end portion of the first stator 51, but the flyer shaft 61 may not extend to the proximal end portion of the first stator 51. Good. The flyer 62 is fixed to the tip of the flyer shaft 61 and is curved so that the spun yarn Y is caught.

  The second motor 70 rotates the yarn hooking member 60. The second motor 70 is, for example, a brushless motor. The second motor 70 is disposed inside the yarn storage unit 41. Specifically, the second motor 70 is disposed in the second region A <b> 2 inside the yarn storage unit 41. The second motor 70 has a second stator 71 and a second rotor 72. The second motor 70 is driven independently of the first motor 50.

  The second stator 71 is fixed to the tip of the first stator 51 of the first motor 50. The second stator 71 has a cylindrical shape. The second stator 71 is formed with a hole 71h through which the flyer shaft 61 is inserted. The center of the hole 71h coincides with the rotational axis of the yarn accumulating roller 40. A coil (not shown) is wound around the second stator 71. The coil is electrically connected to the motor driver 16 via the hollow portion 51 h of the first stator 51.

  Bearing members 73 and 74 are provided between the second stator 71 and the flyer shaft 61. As the bearing members 73 and 74, for example, a bearing or a bush can be used. The bearing members 73 and 74 are arranged at a predetermined interval in the rotation axis direction.

  The second rotor 72 is fixed to the flyer shaft 61. The second rotor 72 is located in the hole 71 h of the second stator 71 and is provided between the two bearing members 73 and 74. The outer peripheral surface of the second rotor 72 is opposed to the inner peripheral surface of the second stator 71 with a predetermined interval. Due to the rotation of the second rotor 72, the flyer shaft 61 (the yarn hooking member 60) rotates.

  The drive of the first motor 50 having the above configuration is controlled by the motor driver 16. The motor driver 16 may be provided for each spinning unit 2, may be incorporated in the unit controller 15, or may be incorporated in the machine controller 6. In the present embodiment, the motor driver 16 is provided for each spinning unit 2. The motored driver controls driving of the first motor 50 based on the pulse signal output from the unit controller 15. In the pulse signal, the amount of current flowing through the coil, the direction and timing of the current are set.

  The setting of the pulse signal output from the unit controller 15, that is, the drive setting of the first motor 50 is made possible by operating the touch panel display D. When information related to driving of the first motor 50 is input on the touch panel display D, setting is performed in the machine controller 6, setting information is generated, and setting information is output to the unit controller 15. The unit controller 15 outputs a pulse signal to the motor driver 16 based on the setting information. In the first motor 50, when a current is supplied from the motor driver 16 to the coil based on the pulse signal output from the unit controller 15, the first rotor 53 and the first rotor 54 rotate. As a result, the yarn storage unit 41 (yarn storage roller 40) fixed to the first rotor 53 rotates.

  The first motor 50 may step out, for example, when a load exceeding a preset threshold is applied, or when a sudden speed change occurs. The unit controller 15 detects the step-out of the first motor 50. That is, the unit controller 15 has a function as a step-out detection unit that detects step-out of the first motor 50. For example, when the unit controller 15 monitors the synchronization between the pulse signal and the rotation of the first motor 50 and detects that the synchronization between the pulse signal and the rotation of the first motor 50 is lost, the unit motor 15 Detect that stepped out. When the unit controller 15 detects the step-out of the first motor 50, the unit controller 15 stops the operation of the yarn accumulating device 11, stops the operation of the pneumatic spinning device 8, and sends a step-out detection signal to the machine controller 6. Output. The machine controller 6 that has received the step-out detection signal causes the touch panel display D to display text indicating that step-out has occurred, for example. The notification of the occurrence of step-out may be other means (buzzer, lamp, etc.).

  The driving of the second motor 70 is controlled by the motor driver 16. The motored driver controls the drive of the second motor 70 based on the drive signal output from the unit controller 15. In the drive signal, the amount of current flowing through the coil, the direction and timing of the current are set. The setting of the drive signal output from the unit controller 15, that is, the drive setting of the second motor 70 is made possible by operating the touch panel display D. When information related to driving of the second motor 70 is input on the touch panel display D, setting is performed in the machine controller 6 to generate setting information, and the setting information is output to the unit controller 15. The unit controller 15 outputs a drive signal to the motor driver 16 based on the setting information.

  In the second motor 70, when a current is supplied from the motor driver 16 to the coil based on the drive signal output from the unit controller 15, the second rotor 72 rotates. As a result, the flyer shaft 61 (yarn hooking member 60) fixed to the second rotor 72 rotates. The second motor 70 rotates in the same direction as the rotation direction of the first motor 50 and rotates relative to the rotation of the first motor 50. The second motor 70 can be rotated at a faster rotational speed than the first motor 50. That is, the yarn hooking member 60 can rotate faster than the yarn accumulating roller 40.

  Next, the operation of the yarn storage device 11 will be described. In the spinning unit 2, when the normal operation in which the spun yarn Y is generated and wound around the package P is performed, the unit controller 15 rotates the yarn accumulating roller 40 at a substantially constant rotational speed. The first motor 50 and the second motor 70 are controlled so that 60 rotates in the same direction at the same rotational speed as the yarn accumulating roller 40. Thereby, the yarn hooking member 60 that rotates while the spun yarn Y is hooked winds the spun yarn Y around the rotating yarn accumulating roller 40.

  In a state where the spun yarn Y is wound around the yarn accumulating roller 40, when the tension of the spun yarn Y on the downstream side of the yarn accumulating device 11 is increased, the unit controller 15 causes the yarn hooking member 60 to move relative to the yarn accumulating roller 40. The second motor 70 is controlled so as to rotate relatively. As a result, the spun yarn Y is unwound from the yarn accumulating roller 40. When the tension of the spun yarn Y on the downstream side of the yarn accumulating device 11 is lowered, the unit controller 15 causes the yarn hooking member 60 to rotate in the same direction as the yarn accumulating roller 40 at the same rotational speed as the yarn accumulating roller 40. The second motor 70 is controlled. As a result, the spun yarn Y is wound around the yarn accumulating roller 40.

  When the storage of the spun yarn Y is started in the yarn storage device 11, the unit controller 15 starts the rotation of the yarn storage roller 40 and also starts the rotation of the yarn hooking member 60, and the first motor 50 and The second motor 70 is controlled. At this time, the unit controller 15 controls the first motor 50 and the second motor 70 so that the rotational speed of the yarn hooking member 60 is faster than the rotational speed of the yarn accumulating roller 40. Accordingly, the spun yarn Y is wound around the outer peripheral surface of the yarn accumulating roller 40 in a state where the spun yarn Y is tensioned.

  The unit controller 15 may control the driving of the second motor 70 according to the winding amount of the spun yarn Y wound around the package P. For example, when the unit controller 15 starts the formation of the package P by winding the spun yarn Y around the bobbin B, that is, at the beginning of winding the spun yarn Y, the unit controller 15 causes the second threading member 60 to rotate at the first speed. When the motor 70 is controlled to complete the formation of the package P, that is, at the end of winding the spun yarn Y, the second motor 70 is controlled so that the yarn hooking member 60 rotates at a second speed slower than the first speed. May be. That is, the unit controller 15 may control the driving of the second motor 70 so that the tension at the start of winding of the package P is high and the tension at the end of winding is low.

  As described above, in the yarn accumulating device 11 of the present embodiment, the first motor 50 is configured such that the first rotor 53 rotates around the first stator 51 positioned inside the yarn accumulating portion 41. . That is, the first motor 50 is a so-called outer rotor type motor. Therefore, a first stator 51 that does not rotate even when the yarn storage roller 40 rotates exists inside the yarn storage unit 41. Further, the rotation of the yarn accumulating roller 40 is achieved by fixing the second stator 71 to the tip of the first stator 51 that extends in the rotation axis direction of the yarn accumulating roller 40 and is coaxial with the rotating shaft. The yarn hooking member 60 can be driven coaxially with the shaft. Therefore, the yarn accumulating roller 40 and the yarn hooking member 60 can be driven independently.

  In the present embodiment, the yarn storage device 11 includes two bearing members 55 and 56 that allow the yarn storage roller 40 to rotate with respect to the first stator 51 between the first stator 51 and the support portion 42. Therefore, the yarn accumulating roller 40 can be stably rotated. When one bearing member is disposed between the support portion 42 of the yarn storage portion 41 and the first stator 51 and one bearing member is disposed on the base end portion 41a side of the yarn storage portion 41, the base end The structure which supports the bearing member arrange | positioned at the part 41a side is needed. As a result, the structure on the base end portion 41a side becomes complicated and the space becomes obstructive, and heat may be trapped inside the yarn accumulating roller 40. In this embodiment, since the base end part 41a side of the yarn storage part 41 is opened, the heat dissipation can be improved.

  In the present embodiment, the first motor 50 is a stepping motor. Thereby, since it becomes possible to control the 1st motor 50 by fixed torque, the thread | yarn storage roller 40 can be rotated stably. As a result, in the spinning machine 1 including the yarn storage device 11, the spun yarn Y can be stably stored.

  In the present embodiment, since the first motor 50 is a stepping motor, the first motor 50 may step out. The unit controller 15 detects the step-out of the first motor 50. When the step-out of the first motor 50 is detected, the unit controller 15 stops the operation of the yarn accumulating device 11 and stops the operation of the pneumatic spinning device 8. Thereby, for example, it is possible to prevent the spun yarn Y in different states from being stored in the yarn accumulating device 11, and to suppress the deterioration of the quality of the spun yarn Y. Further, when the step-out of the first motor 50 is detected, the fact is displayed on the touch panel display D, thereby informing the operator of the spinning unit 2 provided with the yarn storage device 11 in which the step-out has occurred. be able to.

  In the present embodiment, the setting of the tension applied to the spun yarn Y by the yarn hooking member 60 in the yarn storage device 11 provided in each spinning unit 2, that is, the drive setting of the second motor 70 is performed by operating the touch panel display D. It can be done all at once. Therefore, in the yarn storage device 11 of the present embodiment, the tension setting operation can be easily performed.

  When the winding of the spun yarn Y is started in the yarn storage roller 40, it may take time for the rotational speed of the first motor 50 to reach a predetermined speed. At this time, since the tension of the spun yarn Y is low (becomes zero tension), the spun yarn Y may be loosely wound around the yarn accumulating roller 40. In the present embodiment, since the first motor 50 and the second motor 70 can be driven independently, the rotation speed of the yarn hooking member 60 is started at the start of winding the spun yarn Y around the yarn accumulating roller 40. Can be made faster than the rotational speed of the yarn accumulating roller 40. Accordingly, the spun yarn Y can be wound around the yarn accumulating roller 40 by the yarn hooking member 60 at high speed, and tension can be applied to the spun yarn Y. Therefore, the yarn accumulating device 11 can shorten the return time from zero tension, and can suppress the spun yarn Y from being loosely wound around the yarn accumulating roller 40.

  In the present embodiment, the tension of the spun yarn Y wound around the package P in the winding device 13 can be changed (adjusted) according to the rotational speed of the yarn hooking member 60. When the package P is formed in the winding device 13, when the winding diameter is small, the winding tension is increased, and when the winding tension is decreased as the winding diameter increases, a favorable package shape can be obtained. Therefore, a good package P can be formed by changing the rotation of the yarn hooking member 60 so that the tension is increased at the initial stage of winding of the package P and lower at the end of winding.

  In the present embodiment, the first motor 50 and the second motor 70 are located inside the yarn storage unit 41. Thereby, the yarn accumulating roller 40 can be made compact. As a result, the yarn accumulating roller 40 can be disposed in a narrow space, for example.

  The present invention is not limited to the above embodiment. For example, in the above embodiment, the first motor 50 has been described as an example in which the first stator 50 and the first stator 52 are included as the first stator. However, at least one first stator may be provided. Similarly, the form in which the first motor 50 has the first rotor 53 and the first rotor 54 as the first rotor has been described as an example. However, it is sufficient that at least one first rotor is provided.

  In the embodiment described above, the first stator 51 has a cylindrical shape as an example. However, the first stator 51 may have a columnar shape. In this case, the flyer shaft 61 may have a length that can be accommodated in the second stator 71.

  In the above-described embodiment, the mode in which the support portion 42 is disposed at the substantially central portion in the rotation axis direction in the yarn storage portion 41 has been described as an example, but the position of the support portion 42 is not limited thereto. The support part 42 may be provided closer to the proximal end part 41a of the yarn storage part 41, or may be provided closer to the distal end part 41b.

  In the above embodiment, the configuration in which the unit controller 15 controls the driving of the first motor 50 and the second motor 70 and detects the step-out of the first motor 50 has been described as an example. The control unit that controls the driving of the first motor 50 and the second motor 70 and the detection unit that detects the step-out of the first motor 50 are independent of the unit controller 15 as one of the configurations of the yarn accumulating device 11. May be provided.

  In the above embodiment, the second motor 70 is described as an example in which the second motor 70 is a brushless motor. However, the second motor 70 may be another motor.

  In the above embodiment, the mode in which the unit controller 15 functions as a step-out detection unit has been described as an example. However, the step-out detection unit may be provided independently of the unit controller 15. The step-out of the first motor 50 may be detected by the yarn defect detection unit 9. When the first motor 50 steps out, a change occurs in the thickness of the spun yarn Y drawn from the yarn accumulating roller 40. Therefore, it is possible to indirectly detect that the first motor 50 has stepped out by the yarn defect detection unit 9.

  In the above-described embodiment, an example in which winding of the spun yarn Y around the yarn accumulating roller 40 is started as the rotation of the first motor 50 is described as an example. However, when the rotational speed of the yarn accumulating roller 40 reaches a predetermined speed, the spinning yarn Y may be started in the pneumatic spinning device 8 and the spun yarn Y may be wound around the yarn accumulating roller 40.

  In addition to the above embodiment, an encoder that monitors the rotation state of the second motor 70 may be provided. By providing the encoder, the yarn hooking member 60 can be controlled with high precision.

  In the above embodiment, the spinning machine 1 is described as an example of the yarn winding machine, but the yarn winding machine may be an automatic winder or the like.

DESCRIPTION OF SYMBOLS 1 ... Spinning machine (yarn winding machine), 6 ... Machine controller (setting unit), 8 ... Pneumatic spinning device (spinning device), 13 ... Winding device, 15 ... Unit controller (detection unit, unit control unit), 16 DESCRIPTION OF SYMBOLS Motor driver (control part), 40 ... Yarn storage roller, 41 ... Yarn storage part, 42 ... Support part, 50 ... 1st motor (1st drive part), 51 ... 1st stator, 53 ... 1st rotor, 60 DESCRIPTION OF SYMBOLS ... Yarn hooking member, 70 ... 2nd motor (2nd drive part), 71 ... 2nd stator, 72 ... 2nd rotor, D ... Touch panel display (notification part), P ... Package, Y ... Spinning yarn (yarn).

Claims (10)

A yarn storage roller around which the yarn is wound;
A yarn guide member rotatable with respect to the yarn storage roller;
A first drive unit that rotationally drives the yarn storage roller;
A second drive unit that rotationally drives the yarn guide member,
The yarn accumulating roller is
A yarn storage section around which the yarn is wound;
A support portion provided inside the yarn storage portion,
The first driving unit includes:
A first stator that is located inside the yarn storage section, extends along the direction of the rotation axis of the yarn storage roller, and is coaxial with the rotation shaft;
A first rotor fixed to the inside of the yarn storage portion at a position surrounding the first stator,
The second driving unit includes:
A second stator located inside the yarn storage portion and fixed to the tip of the first stator;
A second rotor fixed to the yarn guide member,
The support portion surrounds the tip of the first stator and is disposed between the first rotor and the second stator, and is supported by the first stator.
A yarn accumulating device, wherein at least two bearing members that allow the yarn accumulating roller to rotate with respect to the first stator are disposed between the first stator and the support portion.   The yarn accumulating device according to claim 1, wherein the first driving unit is a stepping motor. A control unit for controlling the driving of the first driving unit;
The yarn storage device according to claim 2, wherein the control unit stops driving of the first drive unit when the first drive unit is out of step. A detection unit for detecting a step-out of the first drive unit;
The yarn storage device according to claim 3, wherein the control unit stops driving of the first drive unit when the detection unit detects a step-out of the first drive unit.   The yarn storage device according to any one of claims 1 to 4, wherein the second drive unit is capable of rotating the yarn guide member at a speed equal to or higher than a rotation speed of the yarn storage roller. . The yarn storage device according to any one of claims 1 to 5,
A spinning device that generates the yarn wound around the yarn storage roller of the yarn storage device;
A yarn winding unit, comprising: a winding device that winds the yarn drawn from the yarn storage roller onto a package.   The yarn winding unit according to claim 6, further comprising a unit control unit that stops the operation of the spinning device when the first driving unit is out of step.   The yarn winding unit according to claim 7, further comprising a notification unit that notifies that the first drive unit has stepped out when the first drive unit has stepped out. The yarn accumulating device includes a control unit that controls driving of the second driving unit,
The said control part controls the drive of a said 2nd drive part during winding of the said thread | yarn in the said winding apparatus, and changes the rotational speed of the said thread | yarn guide member. Yarn winding unit. A plurality of yarn winding units according to any one of claims 6 to 9,
A yarn winding machine comprising: a setting unit configured to set a tension of the yarn wound in the winding device of each of the yarn winding units.

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