JP2009504536A - Method and apparatus for winding a large number of synthetic yarns - Google Patents

Abstract

  The present invention relates to a method and apparatus for winding a large number of synthetic yarns. In this case, the yarn is spun in a plurality of yarn groups and wound on a bobbin. For this purpose, the yarns of one yarn group are wound on a plurality of bobbins by one driven winding spindle and reciprocated at a traverse frequency before being wound on the bobbins. In order to optimize the control when winding the yarn group, according to the invention, the traversing frequency of the first yarn group when winding on the first winding spindle and other winding units The at least one traverse frequency of the adjacent yarn group when winding on the winding spindle is controlled together so that all the yarns of the yarn group are reciprocally guided at the same traverse frequency. To implement, the traverse drive device (17.1-17.4) of adjacent winding units (3.1-3.4) is arranged corresponding to one control device (20) as one drive device group. Has been.

Description

  The invention relates to a method for winding a large number of synthetic yarns as described in the superordinate concept of claim 1 and to an apparatus for carrying out said method, which is described as a superordinate concept of claim 10.

  A method and apparatus of this kind is known from DE 10045473 A1.

  In this known method, multiple yarns are extruded from a plastic melt at a plurality of side-by-side spinning sites. For this purpose, each spinning site has a plurality of spinning nozzles, preferably arranged side by side in a line arrangement. These spinning nozzles have a number of nozzle holes on the lower side. The spinning nozzle is connected to the melt source. In this case, the polymer melt is simultaneously extruded from the nozzle hole of the spinning nozzle. Filament strands extruded per spinning nozzle are combined into a single yarn after cooling. Accordingly, a plurality of yarns are simultaneously spun as a yarn group within one spinning portion. The yarns of the yarn group are wound on a bobbin after cooling and optional intermediate processing. For this purpose, one winding unit is arranged corresponding to each spinning part. This take-up unit has a driven take-up spindle, and the bobbin of one spinning portion is simultaneously taken up as a yarn group by this take-up spindle. In order to wind the yarn during winding, one bobbin yarn guide is arranged corresponding to each bobbin, and this traverse yarn guide guides the yarn back and forth within one traverse stroke. The traverse yarn guides that reciprocally guide the yarns of one yarn group are driven together at one traverse frequency as one group traverse device. The winding unit thus forms one unit for simultaneously winding one group of yarns. In this case, the number of yarns inside the spinning site can be 8, 10, 12, 16, or more.

  In practice, a number of spinning sites can be combined in one integrated facility to produce synthetic yarns, so that a number of winding units are arranged side by side, each one yarn group being wound on a bobbin. . Each winding unit is individually controlled because the yarn of the yarn group can be continuously wound inside the spinning portion. Therefore, the control and monitoring costs are high in relation to the number of spinning sites inside the device.

  According to EP 0 644 282 B1, there is known a method for winding a large number of synthetic yarns after individual control of the winding unit gives a reference part in advance. At the reference site, the process parameters are measured and compared with a predetermined target value. An adjustment value is generated from the difference value, and this adjustment value is used to control all winding units. As a result, in the individual control of the winding unit, only corresponding measurement and evaluation costs are reduced.

  It is an object of the present invention to provide a method for winding a large number of synthetic yarns of the above-mentioned type and a device for carrying out the method so that a large number of yarns are wound on a bobbin with the lowest possible control costs.

  Another object of the present invention is to prepare a control concept for winding a large number of synthetic yarns in a plurality of winding units so as to be implemented as effectively and cost-effectively as possible.

  This object has been solved according to the invention by a method having the features of claim 1 and by an apparatus for carrying out the method having the features of claim 10.

  Advantageous further configurations of the invention are defined by the features and combinations of features of the respective dependent claims.

  The present invention is freed from maintaining the condition of processing and adjusting as a unit important parameters for winding one yarn group, such as the spindle speed of the winding spindle and the traverse frequency for guiding the yarn. It was. The present invention departs from this principle and has combined the winding of a plurality of yarn groups in a controlled manner. For this purpose, the traversing frequency of the first yarn group when winding on the first winding spindle and at least the traversing of the adjacent yarn group when winding on another winding spindle of another winding unit. The swing frequency is controlled together. For this purpose, the drive devices of the group traversing devices of a plurality of adjacent winding units are electrically coupled to one work group and can be controlled via a common control device. As a result, the yarns of a plurality of yarn groups in adjacent spinning parts are simultaneously wound on the bobbin, and the group traversing device driving device arranged corresponding to the control device in the work group is controlled at the same frequency so that the adjacent windings are wound. All yarns in the take-up unit are operated at the same traverse frequency.

  In order to make it possible to draw a uniform yarn from the spinning site, the yarns of one yarn group are wound at a constant winding speed by one winding spindle and consequently at a constant peripheral speed of the bobbin. . Therefore, as the bobbin grows, the number of revolutions of the winding spindle must be continuously adapted to the bobbin diameter of the wound bobbin. In this case, a so-called critical winding ratio occurs during winding. With this winding ratio, so-called ribbon winding occurs when yarn is wound around the bobbin. Such ribbon winding is achieved when the ratio between the rotation speed of the winding spindle and the traverse frequency takes a predetermined value called a so-called critical winding ratio. In order to avoid such a critical winding ratio, the method according to the invention can be improved according to the configurations of claims 2 and 3. In this case, at least the number of rotations of the winding spindle can be monitored individually for each yarn group and compared with the respective traversing frequency of the yarn group. In order to avoid the occurrence of a critical winding ratio at one of the winding spindles, the traversing frequency of all yarn groups is changed globally before the critical winding ratio is achieved. This avoids a critical winding ratio because the winding of the yarns of all yarn groups is continued at the changed traversing frequency.

  In this case, the embodiment of the method is in any case when all critical winding ratios stored in one control electronics are classified with respect to their risk and compared with the actual value of the winding ratio. Changes are made at the winding unit where dangerous ribbon winding is expected.

  However, it is also possible to change the traversing frequency of the relevant yarn group independently of the traversing frequency of the adjacent yarn group before reaching a critical winding ratio on one of the winding spindles. This makes all bobbin replacements, particularly in one winding unit, all by changing the traversing frequency globally, for example, overall changes lead to critical winding ratios in other winding units as well. This can be done before reaching a critical state that cannot be avoided with the take-up unit.

  In order to avoid unacceptable mutual influences on the winding of the yarn group, according to another embodiment of the method of the invention, the current winding is determined from the respective spindle speed and traversing frequency for each yarn group. A ratio is calculated. After comparing the current winding ratio with the memorized critical winding ratio, the difference values in each case can still be overcome by comprehensive control or interference with individual yarn groups is necessary Critical critical regions are selected.

  A variation of the method in which the magnitude of the change in traversing frequency is determined in relation to all winding ratios of the yarn group winding prior to implementation is a leap to the critical region in any of the winding units Is particularly advantageous in that it does not give rise to In this case, the traverse frequency change can be limited by the minimum or maximum winding angle. In this case, the traverse frequency change can be selected to be negative or positive.

  In order to pass as high a rotational speed region as possible during the winding of the yarn group, it is advantageous if another configuration of the method according to the invention is used. In this case, the traversing frequency of the yarn group is superimposed during winding and is changed according to a predetermined control cycle by one or more control programs. Such a control program allows a superimposed change of the traversing frequency according to a predetermined control cycle. In this case, the traverse frequency is continuously raised or lowered within one limit region. This is called wobbeln in the specialized field. In this case, the change amplitude and change frequency of the traverse frequency can be individually defined in order to obtain a predetermined winding state.

  Changing the control cycle with a predetermined change amplitude and change frequency is advantageously performed on one winding of the yarn group before the critical winding ratio is achieved or before the critical restricted zone is achieved. is there.

  Further improvements are achieved for each yarn group by detecting and individually monitoring a plurality of winding parameters during winding on the bobbin. From the current winding parameters, the control cycle is determined due to the superimposed changes in traversing frequency. In this case, the yarn count of the yarn, the number of filaments of the yarn, the filament cross section, the property of the yarn, the winding angle or the yarn tension are taken into consideration as the winding parameters.

  The apparatus of the present invention for carrying out the method of the present invention has a control device, which controls a plurality of winding units arranged side by side in order to comprehensively control the drive device of the group traversing device. It is connected with a plurality of driving devices. In this case, the drive devices of the traverse device of a plurality of adjacent winding units form one drive device group.

  In order to carry out all the control tasks related to the drive device group centrally, a group control device is arranged corresponding to the control device, and a plurality of sensor devices are arranged corresponding to the winding unit. Can be connected. As a result, when a critical winding ratio is recognized in one of the winding units, the information can be converted directly into a control signal for changing the traversing frequency inside the group controller.

  The sensor device has at least one rotational speed sensor arranged corresponding to the winding spindle per winding unit, and the rotational speed sensor can supply the rotational speed of the winding spindle to the group control device.

  In order to be able to adjust all the winding ratios during the winding of the yarn group as much as possible inside the working group, in another configuration of the device according to the invention, the group control device has control electronics, and this control It is particularly advantageous that the winding ratio and the traversing frequency corresponding to the spindle speed can be determined from the current spindle speed for each winding spindle in the electronic device. Thereby, a control command can be generated directly from the comparison by comparison with the stored critical winding ratio.

  In order to enable the unwinding of the yarn as unimpeded as possible irrespective of the monitoring of the winding ratio, the group control device has a control electronics, which can be used to change the traversing of the drive group. The control program stored in can be executed. This makes it possible to impose the conventional ribbon winding breaking method on the winding unit in a simple manner.

  When winding a large number of yarns in a plurality of winding units, it is not possible to completely eliminate individual yarn breaks inside individual spinning sites. Inside the group, one circuit device for interrupting the connection is provided between the traverse drive device and the control device, and the circuit device arranged corresponding to the traverse drive device can be controlled by the group control device. This is particularly advantageous. As a result, the individual drive units of the individual winding units are separated from the drive train independently of the adjacent winding units, so that, for example, bobbin replacement based on thread breakage can be carried out in the corresponding winding unit. . Such an arrangement of the device is particularly advantageous in order to avoid critical winding ratios without an overall change in traversing frequency.

  Hereinafter, an embodiment of the present invention for carrying out the method of the present invention will be described in detail with reference to the accompanying drawings.

  1 and 2 schematically show an embodiment of an apparatus for carrying out the method according to the invention. FIG. 1 shows the device completely in a side view. On the other hand, FIG. 2 is a side view of the winding device arranged below the spinning site. The following description applies to both FIG. 1 and FIG. 2 unless otherwise noted.

  The apparatus has a plurality of spinning portions arranged side by side on one machine longitudinal direction side for melt spinning and winding a large number of yarns. In this case, the drawing plane of the side view shown in FIG. 1 extends transversely to the machine longitudinal direction, and the drawing plane of FIG. 2 extends parallel to the machine longitudinal direction. FIG. 2 shows a total of four winding units, which are arranged behind the spinning site. The number of spinning sites is only one example. Usually, such a spinning device has more spinning parts. However, in the case of so-called small equipment, it is also possible to use only a few spinning sites for producing synthetic yarns.

  Please refer to FIG. 1 first in order to explain the spinning site and the winding unit arranged corresponding to the spinning site. Here, the spinning part is indicated by reference numeral 1.1, and the winding unit arranged corresponding to the spinning part 1.1 is indicated by reference numeral 3.1.

  The spinning part 1.1 has a spinning beam 5 in which a plurality of spinning nozzles 6.1, 6.2, 6.3 and 6.4 are held on the lower side. Inside the spinning beam 5, a melt supply device not shown in detail here is provided. In this case, the spinning beam 5 is configured to be heatable. The spinning beam 5 is connected to the melt supply passage 4 by which the polymer melt is fed from a melt source not shown here and from the spinning nozzles 6.1 to 6.4. Distributed. Each spinning nozzle 6.1 to 6.4 has a large number of nozzle holes on the lower side, and the supplied polymer melt is extruded through the nozzle holes. Each nozzle hole from spinning nozzles 6.1 to 6.4 leads to one filament strand, so from spinning nozzles 6.1 to 6.4, one filament group 7.1 to 7.4 respectively. Is extruded.

  As the melt source, for example, an extruder or a polymerizer can be directly placed at the spinning site. In this case, all the spinning sites or one spinning site group in the installation can be connected to one melt source.

  The filament groups 7.1 to 7.4 extruded by the spinning portions 6.2 to 6.4 are cooled by the cooling device 9 disposed below the spinning beam 5 and are respectively passed through the yarn guide 10. Combined into a single thread. The yarn guide 10 is preferably connected to a preparation device, which guarantees a bundle of filaments inside the yarn. In the spinning part 1.1, a total of four yarns 8.1 to 8.4 are produced simultaneously as a yarn group 2.1. Similarly, the number of yarns produced as a yarn group per spinning site is just one example. In principle, more yarns can be produced at one spinning site. For example, ten, twelve or sixteen yarns can advantageously be produced simultaneously at one spinning site.

  In order to wind the continuously spun yarns 8.1 to 8.4, the yarn group 2.1 is supplied to the winding unit 3.1. The winding unit 3.1 has a group traversing device 13.1, a pressing roller 14 and a winding spindle 15.1. In the winding spindle 15.1, the yarns 8.1 to 8.4 are simultaneously wound in parallel on the bobbins 25.1 to 25.4. In this case, the winding spindle 15.1 is driven by the spindle drive 19.1 so that the yarns 8.1 to 8.4 are wound at a substantially constant peripheral speed from the bobbins 25.1 to 25.4. Is done.

  In order to form a traverse bobbin, the group traversing device 13.1 has one traversing unit per yarn, by which the yarns 8.1 to 8.4 are reciprocated in the traversing stroke. . Since the guide member of the group traverse device 13.1 is driven by the traverse drive device 17.1, each yarn 8.1 to 8.4 is guided at the same traverse frequency. In order to wind the bobbin, the yarns 8.1 to 8.4 are guided to the circumferential surface of the pressing roller 14 before being wound around the bobbins 25.1 to 25.4. In this case, the pressing roller 14 is in contact with the bobbins 25.1 to 25.4. The pressing roller 14 is disposed corresponding to the roller driving device 18. In this case, the roller driving device 18 drives the pressing roller 14 at a substantially constant peripheral speed, particularly in the bobbin replacement period.

  In order to continuously wind the yarn group 2.1, the bobbin revolver 16 is provided in the winding unit 3.1. The bobbin revolver 16 holds the second winding spindle 15.2. The bobbin revolver 16 is associated with a rotation drive device 26, and the rotation drive device 26 drives the bobbin revolver 16 during winding of the yarns 8.1 to 8.4 or for exchanging the bobbin. The bobbin spindle 15.2 is associated with a spindle drive 19.2.

  In order to control the drive of the winding unit 3.1, the roller drive unit 18, the spindle drive units 19.1 and 19.2 and the rotary drive unit 26 are each provided with a single control unit 23.1 to 23.4. Corresponding arrangement. The single control devices 23.1 to 23.4 are connected to the group control device 22. In contrast, the traverse drive device 17.1 of the winding unit 3.1 is coupled to a plurality of traverse drive devices and one drive device group of adjacent winding units, and is arranged corresponding to one control device 20. ing. The control device 20 serves as a group modulator for simultaneously controlling a plurality of traverse drive devices. The control device 20 is connected to the group control device 22.

  As shown in FIG. 2, the plurality of winding units are arranged side by side on the machine longitudinal direction side. In this embodiment, a total of four winding units 3.1 to 3.4 are shown. Each winding unit 3.1 to 3.4 is preceded by one spinning site. In this case, the spinning part is configured similarly to the spinning part 1.1. Accordingly, each winding unit 3.1 to 3.4 is supplied with one thread group 2.1, each having four single threads. The winding unit 3.1 winds up the yarn group 2.1, the winding unit 3.2 winds up the yarn group 2.2, the winding unit 3.3 winds up the yarn group 2.3, The winding unit 3.4 winds up the yarn group 2.4 and forms four bobbins each. Since the winding units 3.1 to 3.4 are structurally the same, each of the winding units 3.1 to 3.4 has one group traversing device 13 for traversing the yarn. .1 to 13.4. The traverse drive devices 17.1 to 17.4 of the group traverse devices 13.1 to 13.4 are electrically combined into one drive device group and connected to the control device 20. Accordingly, the traverse drive devices 17.1 to 17.4 are operated at the same traverse frequency. The control device 20 is controlled via the group control device 22.

  The group control device 22 is connected to a plurality of sensor devices arranged corresponding to the winding units 3.1 to 3.4. In this case, the sensor device has a rotation speed sensor for detecting the rotation speed of the winding spindle during operation. Therefore, the winding unit 3.1 has a rotation speed sensor 24.1, the winding unit 3.2 has a rotation speed sensor 24.2, and the winding unit 3.3 has a rotation speed sensor 24.3. A rotation speed sensor 24.4 is arranged corresponding to the take-up unit 3.4. The sensor signal is given to the group controller 22. The rotation speed sensors 24.1 to 24.4 in FIG. 2 are only schematically illustrated. The rotation speed sensor is usually arranged near the winding spindle in order to detect the rotation speed.

  A circuit device is intermediately connected between the control device 20 and the traverse drive devices 17.1 to 17.4. With this circuit device, the traverse drive devices 17.1 to 17.4 are independent of each other. It can be separated from the drive train. Therefore, the circuit device 21.1 is arranged between the traverse drive device 17.1 and the control device 20. Correspondingly, the circuit device 21.2 corresponds to the traverse drive device 17.2, the circuit device 21.3 corresponds to the traverse drive device 17.3, and the circuit device 21.4 corresponds to the traverse drive device 17.4. Is arranged. The circuit devices 21.1 to 21.4 are connected to the group control device 22 via control leads. The group control device 22 has a control electronic device 27 and a control electronic device 28 which are connected to each other. In this case, the rotational speed signals from the rotational speed sensors 24.1 to 24.4 are sent to the control electronics 27 in order to determine the current winding ratio for the winding units 3.1 to 3.4. Given. The winding ratio (K-value) is the ratio of the rotational speed of the winding spindle to the traverse frequency. In the case of so-called wild winding, the bobbin configuration is performed at a constant bobbin peripheral speed and a constant traverse speed. As a result, the winding ratio continuously decreases as the bobbin diameter increases and, as a result, the rotational speed of the winding spindle decreases. In this case, so-called ribbon winding (mirror winding) occurs when the winding ratio is an integer or takes a value that differs greatly from the winding ratio that is the next integer. However, since the ribbon winding in which the yarn layers directly overlap each other has an unstable bobbin configuration, such a state needs to be avoided when winding the yarn.

  Based on the signalized rotation speed of the winding spindles of the winding units 3.1 to 3.4, the traverse frequency given in advance for each yarn group 2.1 to 2.4 is determined from the current traversing frequency. The winding ratio can be determined. For this purpose, the control electronics 27 are preliminarily given and stored a value table having a critical winding ratio, for example.

  When the winding process in the winding unit 32 approaches a critical winding ratio when winding the yarn of the yarn group 2.2, a control signal is generated in the group controller 22 via the control electronics 28. And it is given to the control device 20. Since the control device 20 causes a change in the traversing frequency in the corresponding traversing drive device 17.1 to 17.4, each group traversing device 13.1 to 13.3 in the winding unit 3.1 to 3.4. Up to 4 is operated at the changed traverse frequency.

  For example, if monitoring of the winding ratio in the winding unit 3.3 predicts a critical condition and this cannot be overcome by a comprehensive change in the traversing frequency, the circuit device 21.3 is connected via the control electronics 28. Is activated, and the connection between the traverse drive device 17.3 and the control device 20 is broken. As a result, the traverse drive device 17.3, and consequently the group traverse device 13.3, is removed from the drive train, and the bobbin is replaced in the winding unit 3.3. This condition is also advantageously used when a yarn break is confirmed in one of the winding units so that the winding of the adjacent yarn group by the adjacent winding unit can continue uninterrupted. It is done.

  Since the method according to the present invention can implement the ribbon winding avoidance method simultaneously in all winding units 3.1 to 3.4, in addition to the comprehensive control of the traverse drive devices 17.1 to 17.4, It is also suitable for executing superimposed control programs. For this purpose, an appropriate control signal is supplied to the control device 20 via the control electronics 28 and a predetermined control cycle for changing the traversing frequency can be carried out.

FIG. 3 is a diagram showing the relationship of the traverse frequency related to the bobbin diameter. In this case, the traverse frequency is plotted on the ordinate. The abscissa shows increasing bobbin diameter and changing spindle speed. First, a reference value is given to control the traverse drive devices 17.1 to 17.4. The reference value of the traverse frequency is indicated by _CO . In that the control cycle is superimposed on the reference value and variation of the traverse frequency having a frequency A ₁ and changes the frequency f ₁ is plotted. If a critical state indicated by the alphabet K in the diagram is established while winding one yarn group, the control cycle is changed. For this purpose, in this embodiment, the change amplitude and the change frequency are increased, so that the fluctuation superimposed on the amplitude A ₂ and the frequency f ₂ is performed. Once the critical state is passed, the original control cycle is again employed to change the traverse frequency.

In the embodiment shown in FIG. 3, the traverse frequency reference is selectively lowered to overcome the critical condition. For this purpose, the reference value C _O is lowered to the value C _S at time K _V before reaching a critical winding ratio. The critical state is now passed with the lowered traverse frequency C _S and is raised again to the original reference value C _O at time K _N after overcoming the critical winding ratio.

A control cycle with amplitude A ₂ and frequency f ₂ can be continued, superimposed on the decrease in traversing frequency. Optionally, both treatments can be combined, and both the traverse reference frequency and the control cycle can be changed.

If there are a large number of winding units, multiple critical winding ratios will be encountered, so the change in traversing frequency height related to the winding ratio of the winding unit winding will be before each change. It is stipulated in. For example, the amplitude A ₂ and the frequency f ₂ can be individually adapted in magnitude to the respective overall state. At the same time, the weighting of the winding ratio according to the risks stored in the control electronics is also taken into account.

  The traversing frequency changes shown in FIG. 3 are in this case made for all winding units 3.1 to 3.4, respectively. As long as that is the case, the yarns of the yarn groups 2.1 to 2.4 are wound on the bobbin at substantially the same winding ratio.

  The method of the present invention can also be improved in the illustrated embodiment by detecting the average winding angle forming the bobbin and determining the critical winding ratio to be avoided therefrom. Similarly, a number of winding parameters, such as count, filament number, filament cross-section, and yarn smoothness, can be taken into account to calculate variation parameters (height, frequency) or winding angle limit.

  It is likewise possible to activate the control program or change the control cycle via a signal of the diameter increase control device or optionally via thread tension measurement.

  Furthermore, a control program configured to avoid ribbon winding can be improved by associating a change in pressing force caused by the pressing roller. For example, the aerodynamic switching of the pressing force between two values can be performed in conjunction with or superimposed on the control program.

  In the embodiment of the invention shown in FIGS. 1 and 2, one processing device 11 can be arranged between the spinning part 1.1 and the winding unit 3.1. In FIG. 1, the processing device 11 is schematically indicated by godets 12.1 and 12.2 indicated by broken lines. The processing devices placed in front of the winding units 3.1 to 3.4 are preferably equally configured. In this case, the structure of the processing device 11 is in principle related to the type and type of yarn to be produced. The processing device 11 can be configured to produce pre-oriented yarns, partially drafted yarns or fully drafted yarns.

1 is a schematic side view of one embodiment of the apparatus of the present invention. The front view which showed schematically the Example of FIG. 1 without the front spinning | fiber-formation site | part. The diagram which shows the change of the traverse frequency relevant to a bobbin diameter.

Explanation of symbols

1.1 Spinning part 2.1, 2.2, 2.3, 2.4 Yarn group 3.1, 3.2, 3.3, 3.4 Winding unit 4 Melt supply passage 5 Spinning beam 6. 1,6.2, 6.3, 6.4 Spinning nozzle 7.1, 7.2, 7.3, 7.4 Filament group 8.1, 8.2, 8.3, 8.4 Yarn 9 Cooling Device 10 Thread guide 11 Processing device 12.1, 12.2 Godet 13.1, 13.2, 13.3, 13.4 Group traverse device 14 Pressing roller 15.1, 15.2 Winding spindle 16 Bobbin revolver 17 .1, 17.2, 17.3, 17.4 Traverse drive device 18 Roller drive device 19.1, 19.2 Spindle drive device 20 Control device 21.1, 21.2, 21.3, 21.4 Circuit device 22 Group control device 23.1, 23.2, 23. , 23.4 Individual control device 24.1, 24.2, 24.3, 24.4 Rotation sensor 25.1, 25.2, 25.3, 25.4 Bobbin 26 Rotation drive device 27 Control electronic device 28 Control Electronic equipment

Claims (15)

  A method of winding a large number of synthetic yarns, wherein the yarn is spun by a plurality of yarn groups, and after the yarn is spun, the plurality of yarn groups are wound on a bobbin by a plurality of winding units. A type in which one group of yarns is wound in a bobbin together with one driven winding spindle in one winding unit and reciprocated at a traverse frequency before being wound on the bobbin. The traverse frequency of the first yarn group when winding on the first winding spindle of the first winding unit and at least one other winding spindle of the other winding unit. A method for winding a large number of synthetic yarns, characterized by controlling together the traversing frequency of one adjacent yarn group when winding.   The at least one take-up spindle speed is individually monitored for each yarn group, and the traversing frequency of all yarn groups is changed before a critical take-up ratio is reached in one take-up spindle. the method of.   At least the number of revolutions of the take-up spindle is individually monitored for each yarn group and before the critical take-up ratio is reached in one take-up spindle, The method of claim 1, wherein the method is varied independently of the traversing frequency of the yarn group.   4. The method according to claim 3, wherein the winding of the relevant yarn group is interrupted and continued after the bobbin change.   For each yarn group, calculate the current winding ratio from the number of rotations of the winding spindle and the traverse frequency, compare the current winding ratio with the critical winding ratio, 5. A method according to any one of claims 1 to 4, wherein the traversing frequency of one or all yarn groups is changed when a critical limit region is achieved after comparing the differences.   6. The method as claimed in claim 1, wherein the magnitude is determined in relation to all winding ratios of the winding of the winding unit before the traversing frequency is changed.   7. A method as claimed in claim 1, wherein the traversing frequency of the yarn group is varied during winding according to a pre-given control cycle superimposed on one or more control programs.   8. A method as claimed in claim 7, wherein upon one winding of the yarn group, the predetermined control cycle of the traversing frequency is changed when a critical winding ratio is reached or when a critical limit region is reached.   For each yarn group, a plurality of winding parameters are detected and individually monitored during winding on the bobbin, and a control cycle that determines the superimposed change of the traverse frequency is determined from the current winding parameters. The method according to claim 7 or 8.   An apparatus for carrying out the method according to any one of claims 1 to 9, wherein a plurality of spinning sites (for spinning a yarn of a plurality of yarn groups (2.1-2.4)) 1.1) and a plurality of winding units (3.1-3.4) for winding the yarns of the plurality of yarn groups (2.1-2.4), and each winding unit (3 In the form of a winding spindle (15.1) driven by at least one driven group traversing device (13.1) The drive units (17.1 to 17.4) of the group traversing device (13.1 to 13.4) of the matching winding unit (3.1 to 3.4) are electrically combined into one drive device group In the drive device group (17.1 to 17.4), there is one drive device group. Control device (20) is associated arranged, and wherein the apparatus for winding a multiplicity of synthetic yarn.   A plurality of sensor devices in which one group control device (22) is arranged corresponding to the control device (20), and the group control device (22) is arranged corresponding to the winding unit (3.1-3.4). 11. The device according to claim 10, connected to (24.1-24.2).   The sensor device has at least one rotational speed sensor (24.1-24.4) arranged corresponding to the winding spindle (15.1) per winding unit (3.1-3.4), 12. The device according to claim 11, wherein the rotational speed sensor can supply the rotational speed of the winding spindle (15.1) to the group control device (22).   The group control device (22) has a control electronic device (27). With this control electronic device (27), with respect to each winding spindle (15.1), the current spindle rotational speed and the axis corresponding to the spindle rotational speed. 13. The device according to claim 12, wherein the winding ratio can be determined from the swing frequency.   The group control device (22) has a control electronic device (28) by which a later control program changes the traversing frequency of the drive device group (13.1 to 13.4). 14. Apparatus according to any one of claims 10 to 13, which is executable on   Circuit devices (21.1-21.4) for interrupting the connection between the traverse drive device (13.1-13.4) and the control device (20) in the drive device group, respectively. One circuit device (21.1-21.4) provided corresponding to the traverse drive device (13.1-13.4) can be controlled by the group control device (22). 15. A device according to any one of claims 10 to 14.

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