JP2009242097A - Automatic winder and package winding method for automatic winder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic winder capable of winding (manufacturing) a package with appropriate winding tension considering characteristics of a winding unit while causing no damage to a thread without providing a tension sensor for measuring the winding tension of the thread during winding. <P>SOLUTION: The automatic winder comprises the winding unit 1 winding the thread Y unwound from a plurality of thread supply bobbins 3, on the package P to manufacture the package P; a tenser 6 applying tension to the thread Y wound on the package P; and a controller 20 having a tension control part for controlling a driving part 27 of the tenser by feedforward based on a preset tension pattern to apply predetermined tension to the thread. The preset tension pattern is a tension applying pattern set based on a measured tension value obtained by manufacturing a sample package and measuring tension applied to a thread during the manufacture of the sample package by a tension sensor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an automatic winder provided with a winding unit for producing a package by winding a yarn unwound from a plurality of yarn supplying bobbins, guiding the yarn to a winding device, winding the package on the winding device, and The present invention relates to a package winding method for an automatic winder.

  FIG. 1 is a diagram illustrating a schematic configuration example of a winding unit of a conventional automatic winder. The winding unit 1 includes a yarn supplying bobbin 3 inserted in a tray 2 at a lower portion, and a winding device 4 for winding a yarn Y unwound from the yarn supplying bobbin 3 around a package P at an upper portion. . Between the yarn feeding bobbin 3 and the winding device 4, a yarn unwinding assisting device 5, a tensioner 6, and a splicer (yarn joining device) 7 for connecting ends of the yarn Y from below along the yarn path, A slab catcher 8 is provided.

  The slab catcher 8 is provided with a cutter 9 integrally or separately. When the slab catcher 8 detects a yarn defect, the clearer controller 10 immediately drives the cutter 9 to cut the defective portion. . The yarn ends of the cut yarn Y on the package P side and the yarn feeding bobbin 3 side are guided by the splicer 7 and spliced by the upper and lower yarn end catching means 7a and 7b that catch them with the suction air, respectively. It is like that. The upper thread end catching means 7a includes an upper thread end suction port 7c. The upper thread end suction port 7c is rotated upward about the shaft 7d so as to approach and face the peripheral surface of the package P, and in this state, the traverse drum 15 is reversed and is on the peripheral surface of the winding package P. The upper end of the upper thread is sucked and supplemented. Thereafter, the upper thread end suction port 7 c rotates downward and is guided to the splicer 7. The lower thread end catching means 7b includes a lower thread end suction port 7e. The lower thread end suction port 7e is rotated upward about the shaft 7f, and the lower thread end which is sucked and captured is guided to the splicer 7. The splicer 7 performs a splicing process on the upper and lower yarn ends.

  Further, the winding device 4 includes a traverse drum 15 that is rotated by a drive motor 14 and a cradle (not shown) that supports the package P so that the package P can be rotated in a state of being brought into contact with the traverse drum 15 with an appropriate pressure. It has. The traverse drum 15 has a traverse groove 17 formed on the peripheral surface thereof, and the yarn is wound around the rotating package P while traversing the yarn Y with an appropriate width.

  In the winding unit 1 of the automatic winder having the above-described configuration, the winding tension of the package P is ideally adjusted by adjusting the winding tension of the package P by increasing the winding diameter of the package P based on experience values. It was done to make it. For example, a cradle (not shown) that supports the package P and the tensor 6 are connected by a lever-link mechanism so that the tension applied by the tensor 6 is reduced in correlation with the movement of the cradle. However, in such tension adjustment, even if the tension fluctuates during winding, this cannot be dealt with, and there is a problem in that yarn breakage due to excessive tension or the like and defective winding shape of the package P occur.

As a countermeasure to the above problem, in the automatic winder disclosed in Patent Document 1, a tension sensor 18 for measuring the winding tension of the yarn Y being wound is provided at the traverse fulcrum position of the traverse drum 15. . The controller 20 controls the drive unit 22 of the tensor 6 based on the tension application measurement value measured by the tension sensor 18, and performs feedback control so that the winding is performed with an optimum winding tension without yarn breakage. . Further, the number of pulses from the pulse generator 24 that detects the number of rotations of the traverse drum 15 is counted, and the length of the yarn Y wound around the package P is calculated from the counted number, and the length of the yarn Y is calculated. As described later in detail, the winding tension is changed. In order to adjust the winding tension, in addition to controlling the drive unit 22 of the tensor 6, a control signal is output from the controller 20 to the inverter 13 that drives the drive motor 14 that rotates the traverse drum 15, and the rotation is performed. The peripheral speed of the package P may be changed by controlling the number.
JP-A-10-87175

  As described above, the tension application measurement value measured by the tension sensor 18 is fed back to the controller 20 and the drive unit 22 of the tensor 6 is controlled to take up the package P with the optimum winding tension without yarn breakage. Will be. However, depending on the yarn handled by the winding unit 1 of the automatic winder, some yarn may be damaged by contacting the tension sensor 18. In order to avoid damage caused by contact with the tension sensor 18, some of them have a plurality of winding tension control patterns without providing the tension sensor 18. There is also a method for selecting and determining the winding tension by selecting and correcting the plurality of winding tension patterns. However, since this method does not take into consideration the characteristics (mechanical error) of the winding unit, there is a problem that it cannot be said that the yarn is wound with an optimum winding tension for each winding unit.

  The present invention has been made in view of the above points. An automatic winder that does not damage a yarn without providing a tension sensor for measuring the winding tension of the yarn being wound during normal operation, and an automatic winder. An object of the present invention is to provide a package winding method. Furthermore, it is possible to wind the package (manufacture of the package) with an appropriate winding tension in consideration of the characteristics of the winding unit of the automatic winder.

  In order to solve the above problems, the present invention provides a tension applying unit that applies tension to the yarn wound around the package, and feeds the tension applying unit based on a preset tension pattern to apply a predetermined tension to the yarn. Tension control means. A sample package is manufactured, and the tension applied to the yarn during the manufacture of the sample package is measured with a tension sensor. A tension pattern is set based on the measured tension value, and this tension pattern is set as a preset tension application pattern.

  As described above, the tension applied to the yarn during the manufacture of the sample package is measured, and the package is manufactured by feed forward using the tension application pattern set based on the measured tension value. As a result, an actual package can be manufactured with an appropriate winding tension in consideration of the characteristics of the winding unit without using a tension sensor, so that the yarn does not contact the tension sensor and cause damage.

  In the automatic winder according to the present invention, the tension applying unit is configured to control a tension value applied by a voltage value applied to the driving unit, and the driving unit stores a voltage value to be applied. A memory unit is provided, and a preset tension application pattern stores a voltage value applied from the tension control unit to the drive unit of the tension application unit during manufacture of the sample package in the voltage memory unit, and the stored voltage The voltage pattern is set based on the value.

  During the manufacture of the sample package as described above, the voltage value applied to the drive unit of the tension applying unit is measured by the voltage storage unit, and the feed forward is performed using the voltage pattern set based on the stored voltage value. To make a package. Thus, as described above, an actual package can be manufactured with an appropriate winding tension in consideration of the characteristics of the winding unit. Moreover, since the tension sensor is not used, the yarn is not damaged.

  Further, in the automatic winder according to the present invention, the automatic winder includes a plurality of winding units, and the preset tension application pattern is manufactured by a predetermined winding unit provided with a tension sensor. It is set based on the tension application measurement value obtained during the manufacture of the sample package, and is configured so that the tension application pattern can be used in each winding unit.

  As described above, each winding unit uses the tension application pattern set based on the tension application measurement value obtained during the production of the sample package by one winding unit. This makes it possible to set a tension applying pattern used by a plurality of winding units with a small number of sample packages.

  The present invention also relates to an automatic winder having a winding unit for producing a package by winding a yarn unwound from a plurality of yarn supplying bobbins, guiding the yarn to a winding device, and winding the package on the winding device. A package winding method, in which a sample package is manufactured by applying tension to a yarn with a predetermined tension pattern at a tension applying unit before the package is manufactured, and applied to the yarn at the tension applying unit during sample package manufacturing. Measure the tension application measurement value, and manufacture the package while applying tension to the yarn by controlling the tension application part with feed forward based on the tension application pattern set based on the measured tension application measurement value. It is characterized by manufacturing a package.

  As described above, the measured value of tension applied to the yarn during the manufacture of the sample package is measured, and the package is manufactured by feed forward using the tension application pattern set based on the measured tension value. Thus, as described above, an actual package can be manufactured with an appropriate winding tension in consideration of the characteristics of the winding unit. Moreover, since the tension sensor is not used, the yarn is not damaged.

  In the automatic winder package winding method according to the present invention, the tension applying unit is configured to be able to control a tension value applied by a voltage value applied to a driving unit of the tension applying unit. Is a voltage measurement value obtained by measuring the voltage value applied to the drive unit, and the manufacture of the package is a voltage pattern set based on the voltage measurement value measured when the sample package is manufactured, and tension is applied based on the voltage pattern. The package is manufactured while tension is applied to the yarn by controlling the drive part of the part by feedforward.

  As described above, the tension applied to the yarn during sample package manufacture is measured, and a package is produced by feed-forward using a tension application pattern set based on the measured tension value without using a tension sensor. To do. Thus, as described above, an actual package can be manufactured with an appropriate winding tension in consideration of the characteristics of the winding unit.

  According to the present invention, since the package can be wound with an appropriate winding tension in consideration of the characteristics of the winding unit without using a tension sensor during normal winding operation, the package can be wound without damaging the yarn. Can be manufactured.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a diagram showing a schematic configuration example of the winding unit of the automatic winder according to the present invention. In FIG. 2, the parts denoted by the same reference numerals as those in FIG. 1 indicate the same or corresponding parts. A tension sensor 18 is detachably provided in the winding unit 1, and controls the voltage applied to the drive unit 22 of the tensor 6 by feedforward control based on an optimum tension pattern idealized by the controller 20. Tension is applied to the sample package to wind up the sample package. The ideal optimum tension pattern is a tension pattern to be applied when winding a high-quality package. As an example, there is a tension pattern that applies a constant tension from the start to the end of winding of the package. The storage unit of the controller 20 stores a sample package winding tension pattern set based on a tension application measurement value measured by the tension sensor 18 when the sample package is manufactured (wound). During the normal winding operation, the controller 20 applies a voltage to the drive unit 22 of the tensor 6 based on the sample package winding tension pattern to apply tension to the yarn Y.

  As described above, a sample package is manufactured using the tension sensor 18, and a tension pattern applied to the yarn Y at that time is measured. When the manufactured sample package is an appropriate package without a defect, an actual package winding tension pattern is manufactured based on the sample package winding tension pattern at that time. The actual package winding tension pattern is stored in a storage unit (not shown) of the controller 20. The actual package P is manufactured by removing the tension sensor and controlling the voltage applied to the driving unit 22 of the tensor 6 by feedforward based on the actual package winding tension pattern. As a result, the actual package can be manufactured (winded up) with an appropriate winding tension in consideration of the characteristics (mechanical error) of the winding unit 1. In the above example, the controller 20 controls the driving unit 22 of the tensor 6 to apply tension to the yarn Y. However, the present invention is not limited to this. For example, a control signal based on the actual package winding tension pattern stored in the storage unit of the controller 20 is output to the inverter 13. Thereby, the applied voltage of the drive motor 14 that drives the traverse drum 15 of the winding device 4 may be controlled to change the rotation speed and apply a predetermined tension to the yarn Y.

  Further, the controller 20 applies a tension to the yarn Y by controlling the voltage applied to the drive unit 22 of the tensor 6. Therefore, the tension applied to the yarn Y by the tension sensor 18 during the manufacture of the sample package is measured, and the voltage applied to the drive unit 22 during the manufacture of the sample package is stored. An actual package winding tension pattern may be set based on the measured voltage. That is, the actual package winding tension pattern may be stored by storing the voltage applied to the drive unit 22 of the tensor 6 in accordance with the winding amount of the yarn Y. Furthermore, the actual package winding tension pattern may be set based on both the tension measurement by the tension sensor 18 and the stored voltage value applied to the drive unit 22 during the manufacture of the sample package. In this case, an actual package winding tension pattern can be set in consideration of the characteristics of the tensor 6.

  Next, a description will be given of a case where a yarn package unwound from a plurality of yarn supplying bobbins 3 is wound by a winding unit 1 and wound around a sample package to produce a sample package, thereby obtaining an actual package winding tension pattern. The yarn unwinding assisting device 5 is controlled by the controller 20 via the drive mechanism 27 so that the distance δ between the lower end thereof and the chess portion of the yarn feeding bobbin 3 is substantially constant. The yarn unwinding assisting device 5 controls the balloon diameter at the time of unwinding to be substantially constant until the yarn supplying bobbin 3 reaches approximately a third ball (a state where 70% of the yarn Y is unwound). Make sure tension does not increase as unwinding progresses. Since the tension after the third ball increases, the tension applied to the yarn Y by the tensor 6 is decreased to keep the tension reaching the package P substantially constant.

  FIG. 3 is a diagram illustrating a configuration example of the tensor 6. The tensor 6 is arranged with respect to the yarn path through which the yarn Y unwound from the yarn supplying bobbin 3 passes. The tensor 6 is a so-called gate-type tensor that includes movable comb teeth 6b with respect to fixed comb teeth 6a, and the amount of meshing thereof is increased or decreased by a drive mechanism 27 constituted by a solenoid or the like. A control signal from the controller 20 controls the amount of engagement of the movable comb teeth 6b with the fixed comb teeth 6a, that is, the amount of bending of the yarn path, so that the tension applied to the yarn Y can be adjusted. .

  As shown in FIG. 4, the clearer controller 10 includes unwinding amount detection means 10a and winding amount detection means 10b. The winding amount detection means 10b includes a pulse shaper 10c and a counter 10d, and a pulse signal S3 (see FIG. 2) from the pulse generator 24 that detects the rotational speed of the traverse drum 15 is fixed by the pulse shaper 10c. After being shaped into pulses, it is counted by the counter 10d. When the thickness of the yarn Y passing through the slab catcher 8 varies, the yarn thickness detection signal S2 input from the slab catcher 8 to the clearer controller 10 varies. The clearer controller 10 compares the yarn thickness detection signal S2 with the reference value, and determines that the yarn defect portion has passed if the allowable value is exceeded. A drive signal S4 is output to the cutter 9, and the defective portion of the yarn Y is cut. Along with this yarn cutting, the yarn traveling signal S1 from the slab catcher 8 is turned off and the yarn breakage is detected, a signal for stopping the drive motor 14 is output from the clearer controller 10 to the inverter 13, the drive motor 14 stops, The vibration drum 15 stops.

  When the yarn splicing operation signal is output from the clearer controller 10 to the splicer 7, the yarn splicing process is performed according to the above-described procedure, and the yarn Y is wound up again. When the winding of the yarn feeding bobbin 3 is completed, the yarn traveling signal S1 is turned off from the slab catcher 8, and further, when the filler 11 detects that there is no yarn Y, a yarnless signal S5 is output to the controller 20, and the controller 20 20 detects that the yarn feeding bobbin 3 is empty. When the empty state of the yarn feeding bobbin 3 is detected, the controller 20 stops the drive motor 14 and stops the rotation of the traverse drum 15. At the same time, a yarn feeding bobbin switching signal S6 is output to the tray 2. As a result, the empty yarn supplying bobbin 3 and the new yarn supplying bobbin 3 are exchanged, the yarn end 3 of the new yarn supplying bobbin is blown up, the yarn splicing process is performed in the same procedure as described above, and the new yarn supplying bobbin 3 The yarn Y is wound up.

  As shown in FIG. 2, the controller 20 is connected to input means 30 for inputting various data via the communication line L. As shown in FIG. 4, the input unit 30 includes a winding amount setting unit 31 and a tension pattern setting unit 32. Further, the controller 20 determines an applied tension according to the degree of unwinding of each yarn feeding bobbin 3. Therefore, the controller 20 includes storage means 33, selection means 34, and tension control means 35 that controls the drive unit 22 of the tensor 6. The storage means 33 stores two or more tension patterns. The selection unit 34 selects the tension pattern stored in the storage unit 33. The tension control unit 35 controls the drive unit 22 of the tensor 6 based on the tension pattern selected by the selection unit 34. The tension control means 35 controls the tension applied to the yarn Y by the tensor 6 by feedforward.

  As shown in FIG. 2, the tension applied to the yarn Y may be directly measured by the tension sensor 18. Then, based on the tension application measurement value measured by the tension sensor 18, the tension direct measurement value corresponding to the winding amount of the yarn Y is patterned. This may be used as an actual package winding tension pattern. By doing so, for example, a control signal is sent from the controller 20 to the inverter 13 of the winding device 4 to control the rotational speed of the drive motor 14 that drives the traverse drum 15, and the tension applied to the yarn Y Can also be controlled.

  The yarn feeding bobbin is wound up, and the voltage applied to the drive motor 14 of the tensor 6 and the traverse drum 15 is feed-controlled so that the tension pattern measured by the tension sensor 18 follows the optimum tension pattern. Until the sample package is formed, the voltage value applied to the driving unit 22 of the tensor 6 is stored. When the sample package is completed, it is inspected whether the completed sample package is a defective package or a proper package. In other words, the sample package includes “Twilled off”, “Twilled off at small diameter”, “Spider web”, “End drop”, “Wear wound”, “Annual ring winding”, “Chrysanthemum winding”, “End ribbon (ribbon winding) ”,“ Stage winding ”,“ drum winding ”,“ bulge winding ”, etc. are inspected for defects. When there is no defect in the sample package, a voltage measurement value with respect to the winding amount of the yarn Y is patterned to set a sample package winding tension pattern, which is used as an actual package winding tension pattern. Then, without arranging a tension sensor on the yarn path as described above, the tension control means 35 controls the voltage applied to the drive mechanism 22 of the tensor 6 based on the actual package winding tension pattern, To manufacture.

  Further, if there is a defect in the completed sample package, the sample package winding tension pattern is corrected using the tension pattern setting means 32 so that the defect is eliminated. A sample package is manufactured based on the corrected tension pattern. When there is no defect in the completed sample package, an actual package winding tension pattern is set based on the voltage value applied to the drive unit 22 of the tensor 6 measured during the manufacture. Even when the completed sample package has a defect, the portion where the sample package winding tension pattern is to be corrected may be uniquely identified from the applied voltage measurement value. In this case, there is no need to try production of a sample package again.

  In addition, as shown in FIG. 6, when the automatic winder includes the same winding unit 1 for multiple sleeps, the sample package is manufactured by the winding unit 1 for one sleep. During the production, the voltage applied to the drive unit 22 of the tensor 6 is measured, and the measured voltage value with respect to the yarn Y winding amount is patterned. This is stored in the storage unit (not shown) of the input means 30 as an actual package winding tension pattern, and the actual package winding tension pattern is shared by the other sleeper winding unit 1 via the communication line L. You may make it do. Further, for example, a tension sensor is provided in the winding unit 1 for one sleep, a sample package is manufactured by the winding unit 1, the tension applied to the yarn Y during manufacture of the sample package is measured, and the yarn Y winding is measured. Pattern the measured tension value against the take-off amount. And this is memorize | stored in the memory | storage part of the input means 30 as an actual package winding tension pattern, and it may be made to share this actual package winding tension pattern via the communication line L in the sleep unit 1 of other sleep. Good.

  The actual work is as follows. FIG. 5a shows the optimum yarn unwinding tension when producing a single winding package. FIG. 5 b shows the pre-package tension for each bobbin when one package is wound up by five yarn feeding bobbins 3. Further, FIG. 5 c shows the progress of the applied voltage to the drive unit 22 of the tensor 6 and the winding amount of the yarn Y.

  First, the operator determines an optimum tension value for one package, as shown in FIG. 5a, so that the wound package is wound with a uniform tension. Next, as shown in FIG. 5b, the optimum tension pattern value is developed for each bobbin. In this example, development was performed on five yarn feeding bobbins 3 (yarn feeding bobbins 3-1 to 3-5). Next, the operator starts the winding operation, and the tension value measured by the actual tension sensor 18 is applied to the drive unit 22 of the tensor 6 so that the optimum tension value developed for each yarn feeding bobbin becomes the optimum tension value. Control the voltage. At this time, the voltage value (tension application measurement value) applied to the drive unit 22 of the tensor 6 is patterned. In this way, a sample package winding tension pattern is obtained. This is stored in the storage unit of the input means 30 as an actual package winding tension pattern. The tension patterns thus patterned are the first and second tension patterns as shown in FIG. 5c.

  The first tension pattern 40 is used at the initial stage of winding, and is generally larger than the second tension pattern 41 used after the initial stage of winding. In the first tension pattern, a1, a2, a3, and a4 are voltages applied to the drive unit 22 of the tensor 6, respectively. a1 is a winding start voltage at the start of winding of the yarn feeding bobbin 3. a2 is a steady voltage in a steady section where the unwinding tension of the yarn feeding bobbin 3 is relatively stable. Further, a3 is a decrease when the unwinding of the yarn feeding bobbin 3 progresses to the vicinity of the third ball and the lowering of the yarn unwinding assisting device 5 stops and the tension is increased to decrease the voltage to offset the increase in tension. Voltage. Further, a4 is a minimum voltage when a minimum tension for stabilizing the traveling yarn is applied. Similarly to the first tension pattern 40, the second tension pattern 41 has a winding start voltage b1, a steady voltage b2, a decrease voltage b3, and a minimum voltage b4. Between the first tension pattern 40 and the second tension pattern 41, there are relationships of a1> b1, a2> b2, a3> b3, and a4> b4.

  In FIG. 5a, winding is performed by the first tension pattern 40 from the first yarn supplying bobbin 3-1 to the third yarn supplying bobbin 3-3 at the initial stage of winding. At the start of winding, the voltage a1 is increased to increase the tension at the start, the winding is stable, and while the yarn unwinding assisting device 5 is operating, the yarn unwinding assisting device 5 is stabilized at the voltage a2. When it does not work, the applied tension is gradually lowered like the voltage a3, and is kept constant when the minimum voltage a4 is reached. By applying a voltage in such a pattern, the winding tension becomes substantially constant as shown by a solid line.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in the above example, a gate-type tensor is used for the tensor 6 that applies tension to the yarn Y, but a disk-type tensor may naturally be used. Further, a configuration may be adopted in which the winding speed of the traverse drum 15 is controlled in order to control the winding tension.

It is a figure which shows the example of schematic structure of the winding unit of the conventional automatic winder. It is a figure which shows the schematic structural example of the winding unit of the automatic winder which concerns on this invention. It is a figure which shows the structural example of a tensor. It is a figure which shows the structural example of a clear controller, a controller, and an input means. It is a figure which shows the change of the tensor application voltage at the time of manufacture of one package, a package front tension, and a thread | yarn external force tension. It is a figure which shows the structural example of the automatic winder provided with the winding unit of multiple sleep.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Winding unit 2 Tray 3 Feeding bobbin 4 Winding device 5 Thread unwinding auxiliary device 6 Tensor 6a Comb tooth 6b Comb tooth 7 Splicer 7a Upper thread end supplementing means 7b Lower thread end supplementing means 7c Upper thread end suction port 7d Shaft 7e Lower thread end suction port 7f Shaft 8 Slab catcher 9 Cutter 10 Clearer controller 10a Unwinding amount detection means 10b Winding amount detection means 10c Pulse shaper 10d counter 11 Filler 13 Inverter 14 Drive motor 15 Traverse drum 17 Traverse groove 18 Tension sensor 20 Controller 22 Drive unit 24 Pulse generator 27 Drive mechanism 30 Input means 31 Winding amount setting means 32 Tension pattern setting means 33 Storage means 34 Selection means 35 Tension control means 40 First tension pattern 41 Second tension pattern a1 Winding Take Starting voltage a2 Steady voltage a3 Decrease voltage a4 Minimum voltage b1 Winding start voltage b2 Steady voltage b3 Decrease voltage b4 Minimum voltage c1 Yarn splicing tension c2 Yarn splicing tension L Communication line P Package Pf Empty winding tube S1 Yarn running signal S2 Yarn thickness detection signal S3 Pulse signal S4 Drive signal S5 Yarn-less signal S6 Yarn feeding bobbin switching signal Y Yarn

Claims (5)

A winding unit for producing a package by winding the yarn unwound from a plurality of yarn supplying bobbins into a winding device and winding the wound yarn on a package of the winding device;
A tension applying unit that applies tension to the yarn wound around the package;
A tension control unit for controlling the tension applying unit by feedforward based on a preset tension applying pattern and applying a predetermined tension to the yarn;
The preset tension application pattern is used to manufacture a sample package, measure the tension applied to the yarn during the manufacture of the sample package with a tension sensor, and feed the measured tension value to form an optimal tension pattern. An automatic winder characterized by a tension application pattern obtained by forward control. The tension applying unit is configured to control a tension value applied by a voltage value applied to the driving unit,
The drive unit is provided with a voltage storage unit that stores a voltage value to be applied,
The preset tension application pattern stores, in the voltage storage unit, a voltage value applied from the tension control unit to the drive unit of the tension application unit during manufacture of the sample package, and the stored voltage value The automatic winder according to claim 1, wherein the voltage pattern is set based on The automatic winder includes a plurality of winding units,
The preset tension application pattern is set based on a tension application measurement value obtained during manufacture of a sample package with a predetermined winding unit equipped with the tension sensor and obtained during the manufacture of the sample package. The automatic winder according to claim 1, wherein the application pattern is configured to be used in each winding unit. A package winding method for an automatic winder comprising a winding unit that winds a yarn unwound from a plurality of yarn supplying bobbins, guides the yarn to a winding device, and winds the package to the winding device to produce the package. There,
Before producing the package, a sample package is produced by applying tension to the yarn with a tension applying unit in a predetermined tension pattern,
Measure the tension applied measurement value applied to the yarn at the tension applying unit during the sample package manufacturing,
The package is manufactured by applying tension to the yarn by controlling the tension applying unit by feedforward based on the tension applying pattern set based on the measured tension applying measurement value. A method for winding a package of an automatic winder. The tension applying unit is configured to control a tension value applied by a voltage value applied to a driving unit of the tension applying unit,
The tension application measurement value is a voltage measurement value obtained by measuring a voltage value applied to the driving unit,
The manufacture of the package is a voltage pattern set based on a voltage measurement value measured at the time of sample package manufacture, and the drive unit of the tension applying unit is controlled by feedforward based on the voltage pattern to produce the yarn. The method of winding a package of an automatic winder according to claim 4, wherein the package is manufactured while tension is applied to the package.

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