JP2016013892A - Yarn winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for performing control of imparting desired tension to yarn to be wound, in a yarn winder including a yarn storage roller.SOLUTION: A yarn winder includes: a yarn storage roller 51; a tension measuring device; a threading arm 53; an arm drive unit 55; and a control unit 60. The yarn storage roller 51 stores the yarn on the surface by being rotationally driven by a roller drive part 52. The tension measuring device measures the tension of the yarn drawn from the yarn storage roller 51. The threading arm 53 is arranged on the downstream side in a yarn travelling direction of the yarn storage roller 51, and imparts tension to the yarn by coming into contact with the yarn. The arm drive unit 55 rotationally drives the threading arm 53. The control unit 60 adjusts a tension imparting amount by the threading arm 53 by performing feedback control of the arm drive unit 55 based on the measurement result of the tension measuring device.

Description

  The present invention relates to a yarn winding device including a yarn accumulating roller.

  2. Description of the Related Art Conventionally, in a yarn winding device such as an automatic winder or a spinning machine, a configuration is known in which a yarn is wound around a rotating yarn storage roller to temporarily store the yarn. Patent Literature 1 discloses a yarn winding device including this type of yarn accumulating roller.

  The yarn winding device of Patent Document 1 includes a yarn feeding device, a drum (yarn accumulating roller), an arm (tension applying unit), and a winding unit. The drum stores the yarn pulled out from the yarn feeding device. The arm is disposed in the vicinity of the drum and applies tension to the yarn supplied from the drum to the winding unit. The drum and arm are driven by separate motors and are controlled independently. Specifically, the motor that drives the arm is controlled to rotate the arm with a constant torque.

Japanese Patent Application Laid-Open No. 2014-20000

  However, Patent Document 1 does not disclose a sensor that detects the tension of the yarn, and does not consider the tension of the yarn in the control of the motor that drives the arm. As described above, in Patent Document 1, since the arm is only rotated with a constant torque, the arm may not be controlled in accordance with the yarn state as the yarn speed increases.

  As a result, it becomes difficult to maintain the tension applied to the yarn at an optimum value, and when the tension applied to the yarn becomes strong, the yarn may break. In particular, in an automatic winder or the like having a high yarn speed, tension variation caused by yarn traverse is large, and yarn breakage is likely to occur due to this variation. In this case, it is necessary to perform yarn joining by a yarn joining device or the like. In addition, when the tension applied to the yarn becomes weak, the yarn may come off from the arm. In this case, the yarn wound around the drum is loosened, and the yarn wound around the drum swells outside the drum. When this phenomenon occurs, the operator needs to remove the yarn from the drum.

  As described above, in the control method of the arm (tension applying unit) of Patent Document 1, winding is likely to be interrupted particularly when winding the yarn at a high speed, so that the production efficiency of the package is lowered. Further, the quality of the package is deteriorated due to fluctuations in the tension applied to the yarn.

  The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a configuration in which a desired tension is applied to a wound yarn in a winding device including a yarn storage roller. There is.

Means and effects for solving the problems

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

  According to an aspect of the present invention, a yarn winding device having the following configuration is provided. That is, the yarn winding device includes a yarn supplying unit, a yarn accumulating roller, a package forming unit, a tension measuring device, a tension applying unit, a driving unit, and a control unit. The yarn supplying section can supply a yarn. The yarn accumulating roller is driven to rotate by a roller driving unit, thereby drawing out the yarn from the yarn supplying unit and storing the yarn on the surface. The package forming unit pulls out the yarn stored in the yarn storage roller to form a package. The tension measuring device measures the tension of the yarn drawn from the yarn accumulating roller. The tension applying unit is disposed on the downstream side of the yarn accumulating roller in the yarn traveling direction, and contacts the yarn to apply tension to the yarn. The driving unit rotationally drives the tension applying unit. The controller adjusts the amount of tension applied by the tension applying unit by performing feedback control of the driving unit based on the measurement result of the tension measuring device.

  Thereby, since the tension on the downstream side of the yarn accumulating roller is measured and the drive unit is controlled based on the measurement result, a desired tension can be applied to the yarn wound around the package. Therefore, the quality of the package can be improved while preventing the winding of the yarn from being interrupted.

  The yarn winding device preferably has the following configuration. That is, this yarn winding device includes a first guide portion and a second guide portion. The first guide portion is disposed on the downstream side of the yarn accumulating roller and converges the yarn drawn from the yarn accumulating roller. The second guide portion is disposed on the downstream side of the first guide portion, and forms a traverse fulcrum of the yarn wound around the package forming portion. The tension measuring device is disposed on a yarn path between the first guide portion and the second guide portion.

  As a result, the yarn between the first guide portion and the second guide portion has less variation in tension, and therefore the tension can be accurately measured.

  In the yarn winding device, it is preferable that the control unit adjusts the amount of tension applied by the tension applying unit by adjusting the torque of the driving unit based on the measurement result of the tension measuring device.

  Thereby, compared with the structure which controls the position (rotation angle) of a tension | tensile_strength provision part by feedback control, the fluctuation | variation of a tension | tensile_strength can be suppressed more reliably.

  The yarn winding device preferably has the following configuration. That is, the yarn accumulating roller rotates about the yarn accumulating roller rotating shaft. The tension applying portion rotates about the yarn accumulating roller rotating shaft.

  Thereby, by controlling the yarn accumulating roller and the tension applying portion coaxially, it is possible to prevent fluctuations in yarn tension with simple control.

  The yarn winding device preferably includes a resistance torque generating unit that generates a torque against the relative rotation of the yarn accumulating roller and the tension applying unit.

  Thereby, for example, when the tension is difficult to fluctuate or when the speed is not changed, the yarn accumulating roller and the tension applying unit can be integrally rotated with simple control.

  The yarn winding device preferably has the following configuration. That is, the yarn winding device includes a transmission mechanism that transmits the driving force of the driving unit to the tension applying unit. The transmission mechanism includes a clutch that switches whether the driving force is transmitted or interrupted from the driving unit to the tension applying unit.

  Thereby, it is possible to easily switch between a state in which the arm is rotated integrally with the yarn accumulating roller and a state in which the arm and the yarn accumulating roller are independently rotated by the driving force of the driving unit.

  The yarn winding device preferably has the following configuration. That is, the yarn winding device includes a transmission mechanism that transmits the driving force of the driving unit to the tension applying unit. The transmission mechanism includes a torque limiter that prevents an excessive driving force from being transmitted from the driving unit to the tension applying unit.

  As a result, it is possible to more reliably prevent the yarn from being cut due to excessive tension.

  The yarn winding device preferably has the following configuration. In other words, the yarn supplying unit supports the yarn to be supplied from a yarn supplying bobbin around which the yarn generated by the spinning device is wound. Between the yarn supplying section and the yarn accumulating roller, there is provided a yarn defect removing device for removing a yarn defect of the yarn supplied from the yarn supplying section.

  As a result, even when the yarn storage roller is stopped to remove the yarn defect contained in the yarn feeding bobbin, the winding of the package can be performed with the optimum tension while measuring the tension of the yarn wound around the package. Can continue. Furthermore, even when the unwinding resistance of the yarn supplying bobbin is increased and the rotation speed of the yarn accumulating roller is set to a low speed, the winding of the package can be continued with the optimum tension.

  The yarn winding device preferably has the following configuration. That is, the yarn supplying unit is a spinning unit that spins a yarn. Between the yarn supplying section and the yarn accumulating roller, there is provided a yarn defect removing device for removing a yarn defect of the yarn supplied from the yarn supplying section.

  Thereby, even when winding the yarn spun by the spinning unit, a desired tension can be applied to the yarn.

The typical side view of the winder unit with which the automatic winder concerning the embodiment of the present invention is provided. Schematic which shows the structure of a thread | yarn storage apparatus. The control block diagram which feedback-controls a roller drive part based on tension. Schematic which shows the structure of the yarn storage apparatus which concerns on a 1st modification. Schematic which shows the structure of the yarn storage apparatus which concerns on a 2nd modification. Schematic which shows the structure of the yarn storage apparatus which concerns on a 3rd modification.

  Next, an embodiment of the present invention will be described. First, an outline of an automatic winder (yarn winding device) will be described with reference to FIG. The automatic winder has a configuration in which a large number of winder units 2 are arranged side by side. The automatic winder includes an unillustrated machine base management device for centrally managing the winder unit 2 and an unillustrated blower box including a compressed air source and a negative pressure source.

  As shown in FIG. 1, the winder unit 2 mainly includes a bobbin support portion (yarn supplying portion) 7 and a winding portion (package forming portion) 8. The winder unit 2 is configured to unwind the yarn (spun yarn) 20 of the yarn feeding bobbin 21 supported by the bobbin support portion 7 and to wind it around the package 30.

  The bobbin support portion 7 is configured to be able to hold the yarn feeding bobbin 21 in a substantially upright state. Further, the bobbin support portion 7 is configured so that the yarn feeding bobbin 21 that has been emptied can be discharged. The winding unit 8 includes a cradle 23 configured to be capable of mounting the winding bobbin 22, and a traverse drum 24 for traversing the yarn 20 and driving the winding bobbin 22.

  The traverse drum 24 is disposed opposite to the winding bobbin 22, and the winding bobbin 22 is driven to rotate by rotating the traverse drum 24. Thereby, the yarn 20 stored in the yarn storage device 18 described later can be wound on the winding bobbin 22. Further, a traverse groove (not shown) is formed on the outer peripheral surface of the traverse drum 24, and the traverse (traverse) of the yarn 20 with a predetermined width can be performed by the traverse groove. With the above configuration, the yarn 20 can be wound around the take-up bobbin 22 while traversing to form a package 30 having a predetermined length and a predetermined shape. In the following description, the terms “upstream” and “downstream” refer to the upstream and downstream sides when viewed in the yarn traveling direction.

  Further, the winder unit 2 includes, in the yarn traveling path between the bobbin support portion 7 and the winding portion 8, in order from the bobbin support portion 7 side toward the winding portion 8 side, the unwinding assisting device 10 and the lower thread. Blowing unit 11, gate type tensioner 12, upper thread catching unit 13, yarn joining device 14, yarn trap 15, cutter 16, clearer (yarn defect detecting device) 17, upper thread drawing unit 35 The yarn storage device 18 is disposed.

  The unwinding assisting device 10 brings the movable member 10a into contact with the balloon formed on the upper portion of the yarn supplying bobbin 21 by swinging the yarn 20 to be unwound from the yarn supplying bobbin 21, and appropriately sets the size of the balloon. This is for assisting the unwinding of the yarn 20 by controlling.

  The lower thread blow-up unit 11 is an air soccer device disposed between the bobbin support 7 and the yarn joining device 14, and the lower yarn on the yarn feeding bobbin 21 side is moved to the yarn joining device 14 side at the time of yarn joining. It is comprised so that it may send out.

  The gate type tensioner 12 applies a predetermined tension to the traveling yarn 20. The gate type tensioner 12 of the present embodiment is configured as a gate type in which movable comb teeth are arranged with respect to fixed comb teeth. The movable comb teeth are configured to be rotatable by a rotary solenoid so that the comb teeth are in a meshed state or a released state. However, the configuration of the gate type tensioner 12 is not limited to this, and for example, a disk type tension applying device may be used.

  The upper thread catching portion 13 is disposed between the yarn joining device 14 and the bobbin support portion 7. The upper thread catcher 13 is connected to a negative pressure source (not shown) and can generate a suction air flow at the time of yarn joining.

  The yarn trap 15 is disposed between the yarn joining device 14 and the yarn accumulating device 18. The tip of the yarn trap 15 is formed as a cylindrical member, is provided close to the traveling path of the yarn 20, and is connected to a negative pressure source (not shown). With this configuration, a suction air flow is generated at the tip of the yarn trap 15, and dust such as fluff adhering to the traveling yarn 20 can be sucked and removed.

  The clearer 17 is configured to detect a yarn defect such as a slab by monitoring the thickness of the yarn 20. When the clearer 17 detects a yarn defect, the clearer 17 transmits a division signal instructing to cut and remove the yarn defect to the control unit 60 or the like. In the vicinity of the clearer 17, a cutter 16 for cutting the yarn 20 immediately in accordance with the dividing signal is arranged.

  The yarn joining device 14 detects the yarn defect when the clearer 17 detects the yarn defect, cuts the yarn 20 with the cutter 16, breaks the yarn being unwound from the yarn feeding bobbin 21, or replaces the yarn feeding bobbin 21. When, for example, the yarn 20 between the yarn feeding bobbin 21 and the package 30 is in a split state, the lower yarn on the yarn feeding bobbin 21 and the upper yarn on the yarn storage device 18 are spliced. It is. As such a yarn splicing device 14, a device using a fluid such as compressed air or a mechanical device can be used.

  The upper thread drawing portion 35 is an air soccer device, and pulls out the upper thread on the yarn storage device 18 side and feeds it toward the deflection guide member 36 at the time of yarn joining.

  When piecing is performed when the yarn feeding bobbin 21 is replaced, the upper yarn on the yarn accumulating device 18 side is sent to the deflection guide member 36 by the upper yarn drawing portion 35 as described above. The deflection guide member 36 discharges the sent upper thread from the lower end. The yarn discharged by the deflection guide member 36 is sucked by the upper yarn catching portion 13. When the upper thread catching portion 13 sucks the upper thread, the upper thread is taken out from a slit (not shown) formed in the deflection guide member 36 and can be guided to the yarn joining device 14.

  On the other hand, the lower thread delivered by the lower thread blowing unit 11 is sucked by the yarn trap 15. As a result, the lower thread can be guided to the yarn joining device 14. In this way, piecing is performed. In the present embodiment, since the yarn defect is removed mainly by the clearer 17, the upper yarn catching portion 13, the yarn trap 15, and the yarn joining device 14, these devices correspond to the “yarn defect removing device”. .

  The yarn storage device 18 is configured to be able to temporarily store the yarn 20 unwound from the yarn supply bobbin 21. Thus, since the yarn storage device 18 is interposed between the bobbin support portion 7 and the winding portion 8 and a certain amount of yarn 20 is stored on the yarn storage device 18, the yarn supply bobbin for some reason. Even when the unwinding of the yarn from 21 is interrupted (for example, during the yarn splicing operation), the winding unit 8 can wind the yarn 20 stored on the yarn storage device 18. The winding of the yarn 20 around the package 30 can be continued.

  Thus, since the winding operation in the winding unit 8 is not interrupted by the yarn joining operation or the like, the package 30 can be generated at high speed and stably. Further, unlike the conventional yarn winding device, the yarn 20 is not sucked and captured from the package 30 at every yarn splicing operation, so that the surface of the package 30 can be prevented from being disturbed. Furthermore, since the occurrence of yarn breakage at the winding unit 8 is reduced, it is possible to prevent the yarn 20 from falling on the end surface of the package 30 or causing a winding shape defect.

  A first guide portion 41, a second guide portion 42, and a tension measuring device 43 are disposed on the downstream side of the yarn storage device 18.

  The first guide portion 41 converges the yarn 20 drawn from the yarn storage device 18 so as to be guided to one place. The second guide part 42 is disposed downstream of the first guide part 41. The second guide portion 42 forms a traverse fulcrum of the yarn 20 that is wound around the winding portion 8.

  The tension measuring device 43 is disposed between the first guide part 41 and the second guide part 42. The tension measuring device 43 is configured as a load cell type sensor. When the yarn 20 travels while being pressed against the contact portion of the tension measuring device 43, the load cell portion is distorted according to the tension of the yarn 20, and an electric signal corresponding to the strain is output from the strain gauge.

  A magazine-type bobbin supply device 26 is disposed on the front side of the winder unit 2. The bobbin supply device 26 includes a rotary magazine can 27. The magazine can 27 is configured to hold a plurality of spare yarn feeding bobbins 21. The bobbin supply device 26 is configured to supply a new yarn supplying bobbin 21 to the bobbin support portion 7 by intermittently rotating the magazine can 27.

  Next, the yarn accumulating device 18 will be described in detail with reference to FIG. The yarn accumulating device 18 includes a yarn accumulating roller 51, a roller driving unit 52, a yarn hooking arm (tension applying unit) 53, a transmission mechanism 54, and an arm driving unit (driving unit) 55.

  The yarn storage roller 51 is formed as a substantially cylindrical member, and is configured to store the yarn 20 by winding the yarn 20 around the outer peripheral surface thereof.

  The roller driving unit 52 rotationally drives the yarn accumulating roller 51 around its central axis. Specifically, the belt 70 is wound around the output shaft 52a of the roller driving unit 52 and the connecting member 51a fixed to the inner surface of the yarn accumulating roller 51, and the output shaft 52a rotates. The yarn accumulating roller 51 can be rotated. The operation of the roller driving unit 52 is controlled by the control unit 60. The roller driving unit 52 is a servo motor or a stepping motor.

  The arm driving unit 55 rotates the yarn hooking arm 53 when the driving force is transmitted by the transmission mechanism 54. The transmission mechanism 54 of this embodiment mainly includes a shaft 54a, and the shaft 54a transmits a driving force. With this configuration, the yarn hooking arm 53 can be rotationally driven by the same rotation shaft as the yarn accumulating roller 51. The operation of the arm drive unit 55 is controlled by the control unit 60 independently of the roller drive unit 52. Therefore, in this embodiment, the rotational speeds of the yarn accumulating roller 51 and the yarn hooking arm 53 can be made different. The arm driving unit 55 is a servo motor or a stepping motor.

  Next, control performed by the control unit 60 for the arm drive unit 55 will be described with reference to FIG.

  Each winder unit 2 includes a control unit 60. The control unit 60 includes hardware such as a CPU, ROM, and RAM (not shown) and software such as a control program stored in the RAM. The hardware and software cooperate to control each configuration of the winder unit 2. As shown in FIG. 3, the control unit 60 includes a deviation calculating unit 61, a PID control value determining unit 62, and a limiter 63 as a configuration for controlling the arm driving unit 55.

  The tension measurement value measured by the tension measuring device 43 is input to the deviation calculating unit 61 of the control unit 60. In addition, a tension target value derived from winding conditions such as the type of the yarn 20 and the yarn traveling speed is input to the deviation calculating unit 61. The deviation calculation unit 61 calculates a deviation between the two input values and outputs the deviation to the PID control value determination unit 62.

  The PID control value determination unit 62 calculates a control value for controlling the torque of the arm driving unit 55 by known PID control based on the deviation, the time integration of the deviation, and the time differentiation of the deviation. Note that the control value may be calculated based only on the deviation, or the control value may be calculated based only on the deviation and its time integration. Further, feedback control other than PID may be used. The PID control value determination unit 62 outputs the control value calculated as described above to the limiter 63.

  The limiter 63 defines the upper limit of the control value of the arm drive unit 55. When the control value input from the PID control value determination unit 62 is equal to or greater than a predetermined threshold value, the limiter 63 outputs the threshold value as a control value to the arm drive unit 55. Further, when the control value input from the PID control value determination unit 62 is smaller than a predetermined threshold, the limiter 63 outputs the input value as it is.

  The arm drive unit 55 receives the control value calculated as described above, and adjusts the torque of the arm drive unit 55 based on the control value. Note that the control unit 60 performs the above feedback control as needed, whereby the yarn hooking arm 53 can apply a desired tension to the yarn 20 even when the traveling speed of the yarn is high. .

  As described above, the yarn winding device of this embodiment includes the bobbin support portion 7, the yarn accumulating roller 51, the winding portion 8, the tension measuring device 43, the yarn hooking arm 53, and the arm driving portion 55. And a control unit 60. The bobbin support portion 7 can supply the yarn 20. The yarn accumulating roller 51 is rotationally driven by the roller driving unit 52, thereby pulling out the yarn 20 from the yarn supplying bobbin 21 of the bobbin support unit 7 and storing the yarn 20 on the surface. The winding unit 8 pulls out the yarn 20 stored in the yarn storage roller 51 to form the package 30. The tension measuring device 43 measures the tension of the yarn 20 drawn from the yarn accumulating roller 51. The yarn hooking arm 53 is arranged on the downstream side of the yarn accumulating roller 51 in the yarn traveling direction, and comes into contact with the yarn 20 to apply tension to the yarn 20. The arm drive unit 55 rotationally drives the yarn hooking arm 53. The control unit 60 adjusts the amount of tension applied by the yarn hooking arm 53 by performing feedback control of the arm driving unit 55 based on the measurement result of the tension measuring device 43.

  Thereby, since the tension on the downstream side of the yarn accumulating roller 51 is measured and the arm driving unit 55 is controlled based on the measurement result, the tension of the yarn 20 wound around the package 30 can be set as a desired tension. Therefore, the quality of the package 30 can be improved while preventing the winding of the yarn 20 from being interrupted.

  Next, a first modification of the above embodiment will be described with reference to FIG. In the description of the first modified example and the following modified examples, the same or similar members as those in the above-described embodiment may be denoted by the same reference numerals in the drawings, and the description may be omitted.

  The yarn storage device 18a of the first modification includes a resistance torque generator 56. The resistance torque generator 56 is a load such as a torque limiter attached between at least the inner surface of the shaft 54 a and the yarn accumulating roller 51.

  As a result, the resistance torque generator 56 generates torque against the relative rotation of the yarn accumulating roller 51 and the yarn hooking arm 53, and rotates integrally. The yarn hooking arm 53 can be rotated relative to the yarn accumulating roller 51 by driving the arm driving portion 55 with this torque or more.

  For example, when the variation in tension is small, the operation of the arm driving unit 55 is stopped, and the yarn accumulating roller 51 and the yarn hooking arm 53 are integrally rotated by the torque of the resistance torque generating unit 56. And when the fluctuation | variation of a tension | tensile_strength is large, the fluctuation | variation of a tension | tensile_strength can be prevented by driving the arm drive part 55 and rotating the yarn hooking arm 53 relatively.

  Next, a second modification will be described with reference to FIG.

  The yarn storage device 18b of the second modification includes a resistance torque generator 56 as in the first modification. The transmission mechanism 54 includes a clutch 54b in addition to the shaft 54a. The clutch 54b is a component of the transmission mechanism 54. The clutch 54b switches whether the driving force is transmitted from the arm driving unit 55 to the yarn hooking arm 53 or cut off.

  Thereby, the yarn accumulating roller 51 and the yarn hooking arm 53 can be rotated integrally without stopping the driving of the arm driving portion 55 as in the first modification. Accordingly, for example, when the shaft 54a is rotated at a slightly lower rotational speed than the yarn accumulating roller 51 and the yarn hooking arm 53 is to be decelerated, the yarn hooking arm 53 can be immediately decelerated by connecting the clutch 54b. it can.

  Next, a third modification will be described with reference to FIG.

  The transmission mechanism 54 of the yarn storage device 18c of the third modified example includes a torque limiter 54c in addition to the shaft 54a. The torque limiter 54c is attached so as to connect the shaft 54a divided into two. The torque limiter 54c causes the two shafts 54a to rotate integrally when a torque less than a predetermined value is applied, and the two shafts 54a rotate relative to each other when a torque greater than a predetermined value is applied.

  Thereby, it can prevent more reliably that the tension | tensile_strength is applied to the thread | yarn 20 and the thread | yarn 20 is cut.

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

  In the above description, at least a part of the roller driving unit 52 and the arm driving unit 55 are arranged inside the yarn accumulating roller 51, but they may be arranged outside the yarn accumulating roller 51. Further, the yarn hooking arm 53 may be disposed outside the yarn accumulating device 18.

  For example, a tension sensor using a spring and / or a piezoelectric element can be used as the tension measuring device 43 instead of the load cell type.

  In the above description, the control unit 60 adjusts the torque of the arm drive unit 55 based on the measured tension. However, the position (rotation angle) and speed (rotation speed) may be adjusted instead of the torque.

  In the above, an example in which the present invention is applied to an automatic winder has been described, but the present invention can also be applied to other yarn winding devices such as a spinning machine. When applied to a spinning machine, a spinning unit that spins spun yarn from a sliver corresponds to a yarn supplying unit.

  In the above, an example in which the yarn supplying bobbin 21 is supplied by the magazine type bobbin supplying device 26 has been described. However, a yarn winding device including a tray type bobbin supplying device may be used.

2 Winder unit 7 Bobbin support part (yarn supply part)
8 Winding part (package forming part)
18, 18a, 18b, 18c Yarn accumulating device 43 Tension measuring device 51 Yarn accumulating roller 52 Roller driving unit 53 Yarn hooking arm (tension applying unit)
54 Transmission Mechanism 55 Arm Drive Unit (Drive Unit)
60 Control unit

Claims (9)

A yarn supplying section capable of supplying yarn;
A yarn storage roller that pulls out the yarn from the yarn supply unit and stores the yarn on the surface by being rotationally driven by a roller driving unit;
A package forming section for drawing a yarn stored in the yarn storage roller to form a package;
A tension measuring device for measuring the tension of the yarn drawn from the yarn storage roller;
A tension applying portion that is disposed downstream of the yarn storage roller in the yarn traveling direction, and that applies tension to the yarn in contact with the yarn;
A drive unit that rotationally drives the tension applying unit;
A control unit that adjusts the amount of tension applied by the tension applying unit by feedback controlling the drive unit based on the measurement result of the tension measuring device;
A yarn winding device comprising: The yarn winding device according to claim 1,
A first guide portion disposed on the downstream side of the yarn accumulating roller and converging the yarn drawn from the yarn accumulating roller;
A second guide part disposed downstream of the first guide part and forming a traversing fulcrum of the yarn wound around the package forming part;
With
The yarn winding device, wherein the tension measuring device is disposed on a yarn path between the first guide portion and the second guide portion. The yarn winding device according to claim 1 or 2,
The yarn winding device, wherein the control unit adjusts the amount of tension applied by the tension applying unit by adjusting the torque of the driving unit based on the measurement result of the tension measuring device. A yarn winding device according to any one of claims 1 to 3,
The yarn storage roller rotates around a yarn storage roller rotation axis,
The yarn winding device, wherein the tension applying portion rotates about the rotation axis of the yarn accumulating roller. The yarn winding device according to claim 4,
A yarn winding device comprising: a resistance torque generating unit that generates a torque that resists relative rotation between the yarn accumulating roller and the tension applying unit. The yarn winding device according to claim 5,
A transmission mechanism for transmitting the driving force of the driving unit to the tension applying unit;
The yarn winding device, wherein the transmission mechanism includes a clutch that switches whether the driving force is transmitted or interrupted from the driving unit to the tension applying unit. A yarn winding device according to any one of claims 1 to 4,
A transmission mechanism for transmitting the driving force of the driving unit to the tension applying unit;
The yarn winding device, wherein the transmission mechanism includes a torque limiter that prevents an excessive driving force from being transmitted from the driving unit to the tension applying unit. A yarn winding device according to any one of claims 1 to 7,
The yarn supplying unit supports the yarn to be supplied from a yarn supplying bobbin around which the yarn generated by the spinning device is wound,
A yarn winding device, wherein a yarn defect removing device for removing a yarn defect of the yarn supplied from the yarn supplying unit is provided between the yarn supplying unit and the yarn accumulating roller. A yarn winding device according to any one of claims 1 to 7,
The yarn supplying section is a spinning section for spinning a yarn;
A yarn winding device, wherein a yarn defect removing device for removing a yarn defect of the yarn supplied from the yarn supplying unit is provided between the yarn supplying unit and the yarn accumulating roller.

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