EP2982632A1 - Method and device for winding a crosswound bobbin - Google Patents

Abstract

The present invention relates to a method for winding a package (8), characterized in that in an initial phase of the winding cycle the winding is made with a target value of the winding speed, which is reduced compared to a target value of the winding speed after completion of the initial phase. However, the invention also relates to a device for carrying out this method.

Description

The invention relates to a method for winding a package and a device for carrying out such a method.

Bobbins are made by respective textile machines, which typically consist of a plurality of similar workhouses each producing a package which are of equipment central to the textile machine, e.g. a power supply to be supplied. Such a textile machine may in particular be an automatic winder which wraps a plurality of relatively small-volume feed bobbins, in particular spinning cops, into a take-up bobbin having a substantially more gammaterial, or else a spinning machine.

The process of winding a bobbin, from the empty tube to the finished wound package, is referred to as a winding cycle. To initiate a winding cycle, first, e.g. taken from a responsible for several jobs service unit, a ready-wrapped package from the job and transferred to a Abtransportsystem, after which an empty tube is used as a new, still empty, package in the bobbin holder of the job. Typically, the service unit then also brings a Fadenanfangsreserve on the empty tube, which then either the service unit or work-own components take over the thread connection process with the coming of the spinning cop lower thread in the winder or the piecing process in the spinning machine. Then then the actual winding cycle, ie the winding of the coming of the spinning cops or the spinning elements thread on the package, which is typically interrupted occasionally by Spinnkopswechsel, thread breaks and cleaner cuts and then re-recorded.

For this purpose, it is generally recognized in the prior art to achieve maximum productivity, that is, as many per minute wound thread meter, to wind the yarn during the entire winding cycle with a constant and the highest possible speed on the package. If, for reasons of simplification, the term "constant" or "constant" speed is used here, this should not exclude the method well-known to the person skilled in the art, which does not exclude Winding speed, so the peripheral speed of the take-up, eg to avoid so-called images by Bildstörverfahren to vary, or to make them dependent on thread tension, or to reduce them generally in problematic situations, such as when unwinding the last Kops third to avoid an increased yarn breakage rate. In this respect, with "constant" speed then the winding speed meant on which, for example, such Bildstör- and speed reduction method.

The winding speed is thus chosen as high as possible from the viewpoint of productivity maximization, but at high speed deteriorates the Gam quality, in particular the hairiness increases, and increasingly thread breaks occur, which can also deteriorate the yarn quality on the one hand by the necessary thread connections, and on the other limit the achievable maximum productivity with the resulting production interruptions to the thread reconnection and restarting the winding process. In this respect, the winding speed in the prior art is thus selected as high as possible, as far as this is still compatible with the desired yarn quality and does not even lead to a loss of productivity due to too many yarn breaks.

The state of the art continues to assume that it is essential for high productivity at each start of the winding process, be it at the beginning of the winding cycle in which, except for the thread initial reserve, still empty package and after each Spulunterbrechung, the winding speed as soon as possible to their target value, which, as just described, is optimized for maximum productivity while maintaining the desired yarn quality.

Here is the example DE 40 39 086 A1 called, which suggests at the beginning and after each interruption of the winding cycle, the winding speed quickly to a respectively predetermined maximum or optimum value, ie the target value, by raising the speed of a winding coil rotating electric motor, via a controllable frequency converter or inverter with alternating current or three-phase variable frequency is driven by appropriate control of the frequency converter or inverter quickly to a speed level that slightly is below or in the lower tolerance range of that speed corresponding to the selected maximum or optimal winding speed.

Based on this hitherto uncritically accepted prior art, it is therefore an object of the present invention to improve the manufacturing process of a package in that an improved package quality, or lower energy consumption, or a higher productivity, or a reduction in manufacturing or operating costs of Winding device or more of the advantages mentioned can be achieved.

The object is achieved by a method for winding a package, characterized in that in an initial phase of the winding cycle the winding is made with a target value of the winding speed, which is reduced compared to a target value of the winding speed after completion of the initial phase.

• eine Halterung zur drehbaren Lagerung der Auflaufspule,
• einen Antrieb zur Rotation der Auflaufspule,
• eine Steuereinheit zur Steuerung der Rotation der Auflaufspule über den Antrieb, dadurch gekennzeichnet, dass die Steuereinheit dazu eingerichtet ist, in einer Anfangsphase der Spulreise das Bewickeln mit einem Zielwert der Spulgeschwindigkeit vorzunehmen, der gegenüber einem Zielwert der Spulgeschwindigkeit nach Abschluss der Anfangsphase reduziert ist.

The object is also achieved by a device for winding a package, comprising

• a holder for rotatably supporting the package,
• a drive for rotating the package,
• a control unit for controlling the rotation of the package through the drive, characterized in that the control unit is adapted to carry out in an initial phase of the winding cycle the winding with a target value of the winding speed, which is reduced compared to a target value of the winding speed after completion of the initial phase.

The inventor has recognized that a constant during the entire winding travel target value of the winding speed, is to boot quickly at each start of the winding process, in an initial phase of the winding cycle in the still relatively small package to a very high speed of the package. However, in any case, this high rotational speed loads the reel bearings very strongly, which leads to increased wear and requires a correspondingly robust and thus expensive reel storage. In addition, in particular, in the case that the package is driven by a drive drum by frictional engagement, it leads to a considerable slippage between package and drive drum, so a large difference in the peripheral speeds of these two components, resulting in high friction with appropriate heat and negative influences pulls on the thread. It worsens Thus, both the yarn quality of the thread. in particular, its hairiness increases, as well as the energy consumption increases. Furthermore, the difference in speed also exerts shear forces on the thread and increases the risk of thread breaks, which has a negative impact on productivity as a result of the production interruptions that are triggered.

These negative consequences can be counteracted by the method according to the invention and the device which executes this. In this case, the invention further uses the concept of a target value of the winding speed, which is to be ramped up quickly at each start of the winding process. Compared to the time afterwards, however, it reduces this target value in an initial phase of the winding cycle, in which the package still has a relatively small diameter. However, this provides in the initial phase of the winding cycle for lower speeds of the package and, when using a drive drum, for reduced slip, bringing the o.g. Problems are at least diminished.

In a preferred embodiment of the invention, then the determination of the length of the initial phase of the winding cycle and the target values of the winding speed in the initial phase and after completion of the initial phase should also be carried out so that the winding package speed during the entire winding cycle, and thus also during its initial phase remains a predetermined value. Thus, in this embodiment, the invention can also be understood as a speed limitation of the package, which avoids critical loads on the package components and, in particular, on the package bearings. In addition, in this situation when using a drive drum, the emergence of excessive speed differences between the package and the drive drum is prevented, which positively influences the yarn quality and in particular the hairiness of the thread.

Although the lower target value of the winding speed, compared to the prior art, superficially leads to a loss of productivity in the initial phase of the winding cycle. However, this is already at least partially offset by a reduced number of yarn breaks at this time, or there is even an increase in productivity due to the, thus avoided production losses. In any case, a potential reduction in productivity is kept within narrow limits, since, measured on the total applied to the package yarn volume, the applied in the initial phase of the winding cycle share is low, so that this disadvantage can at least due to the significantly improved yarn quality in the initial phase of the winding cycle.

But even such a productivity disadvantage can be reduced or even converted into an advantage, if the target value of the winding speed after completion of the initial phase, compared to the target value used in the prior art during the entire winding cycle, can be set higher. It should be noted that the target value used in the prior art results as an optimization to be made during the entire winding cycle in terms of productivity while maintaining the desired yarn quality.

Because of the high initial speeds and the given with the use of a drive drum high slip but at the beginning of the winding cycle considerable problems regarding. Yarn quality and yarn breakage rate arise. Therefore, it can be assumed that in the initial phase of the winding cycle to maintain the yarn quality only a lower target value of the winding speed can be used than is possible with the same yarn quality after completion of the initial phase. However, since the prior art only works with a single target value of the winding speed during the entire winding cycle, this is limited by the lower value in the initial phase of the winding cycle.

Even if the method according to the invention should operate with a lower target value of the winding speed in the initial phase of the winding cycle, in many situations it will allow a higher target value than the prior art in many situations after completion of the initial phase, ie faster spooling after completion of the initial phase , As already noted, however, the lion's share of the gambling volume is obtained after completion of the initial phase, whereby the method according to the invention can thus even achieve a productivity advantage over the prior art.

In advanced rewinding on a winder, in which the package is not operated at a constant winding speed anyway, but in which the winding speed to reduce thread breaks dependent on thread tension adjusted and / or reduced in known critical situations, fall the initial production losses of the inventive method anyway lower, or run with suitable control even in a production advantage. Thus, in the case of yarn tension-dependent winding speed, it is to be expected that the state of the art in the initial phase of the winding cycle will increasingly register thread tension increases triggered by the high winding package speed, and therefore must work in this phase with a mean winding speed reduced compared to the desired constant winding speed, which would affect the productivity differences inventive method at least reduced or the invention even brings a productivity gain.

A common method to reduce the winding speed in critical situations to reduce yarn breaks, is in winding machines, for. to unwind the last third of the respective delivery bobbin at a lower speed, i.a. So in the last rewinding of the bobbin to reduce the winding speed. In the simplest case, the speed reduction is fixed, so there is a fixed reduction in the otherwise desired constant target value of the winding speed. In a preferred variant of the invention, the target value of the winding speed reduced in an initial phase of the winding cycle can now be utilized in the described method by reducing the speed reduction carried out in the last rewinding bobbin of the delivery bobbin, or even completely omitting it.

In a further development, it is then also possible to successively increase the speed reduction carried out in the last rewinding phase of the delivery reel, starting from the empty package until the end of the initial phase of the rewinding, to the desired value after completion of the initial stage. This, too, at least reduces or even reverses the loss of productivity caused by the invention in the initial phase of the winding cycle.

Preferably, the point at which the winding speed reduced in the initial phase of the winding travel reaches its desired target value after completion of the initial phase can be specified by specifying the diameter of the package in which the initial phase is to be completed. From this diameter can then how known in the art, with a constant target value of the winding speed weiterzulespult. As an alternative to the diameter, however, the length of the thread or the duration of time over which the initial phase of the winding cycle should extend can also be specified.

A particularly gentle and at the same time efficient, i.e. increasing the yarn quality at high productivity, form of bringing the target value of the winding speed, reduced in the initial phase of the winding cycle, to its target value after completion of the initial phase, consists in a linear increase of this target value. This may vary depending on the o.g. Procedure then either linearly for the thread length, the time or preferably over the diameter of the package take, the latter brings the additional advantage of a constant speed of the package coil with it. In addition to a linear approach, however, other Zielwertsteigerungsprofile are conceivable, with an increase in stages offers in particular because of their control simplicity.

For carrying out the method, the hardware components known from the prior art, in particular the known workstations of winding machines and spinning machines, are sufficient. The execution of the method can be accomplished completely by a suitable programming of the control unit controlling the winding speed, which control unit can be mounted either individually per workstation or also centrally per textile machine. Alternatively, of course, it is also possible to use hardwired controllers in hardware, which would, however, then require a modification of the workstations of the state of the art.

All of the embodiments described above and also their combinations belong to the present invention.

In the following the invention with reference to an embodiment shown in the drawings and some of its variants will be explained in more detail.

Fig. 1

in Vorderansicht eine vereinfachte Darstellung einer erfindungsgemäßen Vorrichtung, konkret einer erfindungsgemäß eingerichteten Spulstelle einer Spulmaschine;

Fig. 2

die Spulstelle aus Figur 1 in Seitenansicht;

Fig. 3

den Verlauf des Zielwertes der Drehzahl der Auflaufspule in Abhängigkeit von ihrem Durchmesser, einmal bei im Stand der Technik verwendetem konstanten Zielwert der Spulgeschwindigkeit, und zum zweiten in einer Ausführungsform des erfindungsgemäßen Verfahrens mit in der Anfangsphase der Spulreise konstantem Zielwert der Auflaufspulendrehzahl;

Fig. 4

den Verlauf des Zielwertes der Spulgeschwindigkeit in Abhängigkeit vom Durchmesser der Auflaufspule, einmal bei im Stand der Technik verwendetem konstanten Zielwert der Spulgeschwindigkeit, und zum zweiten in einer Ausführungsform des erfindungsgemäßen Verfahrens mit in der Anfangsphase der Spulreise konstantem Zielwert der Auflaufspulendrehzahl;

Fig. 5

eine Messkurve des Energieverbrauchs beim Wickeln einer Auflaufspule beim im Stand der Technik verwendetem konstanten Zielwert der Spulgeschwindigkeit;

Fig. 6

den Produktivitätsverlust eines erfindungsgemäßen Verfahrens im Vergleich zum Spulen mit dem Endwert des Zielwertes der Spulgeschwindigkeit während der gesamten Spulreise;

wobei dieselben Bauteile in allen Figuren mit denselben Bezugszeichen bezeichnet sind.Show it

Fig. 1

in front view a simplified representation of a device according to the invention, specifically a winding unit of a winding machine according to the invention;

Fig. 2

the winding unit off FIG. 1 in side view;

Fig. 3

the course of the target value of the speed of the package as a function of its diameter, once in the prior art used constant target value of the winding speed, and the second in an embodiment of the inventive method with constant in the initial phase of the winding cycle target value of the Auflaufspulendrehzahl;

Fig. 4

the course of the target value of the winding speed in dependence on the diameter of the package, once in the prior art used constant target value of the winding speed, and the second in an embodiment of the inventive method with constant in the initial phase of the winding cycle target value of the package speed;

Fig. 5

a trace of energy consumption when winding a package in the constant speed winding speed used in the prior art;

Fig. 6

the loss of productivity of a method according to the invention in comparison to the winding with the final value of the target value of the winding speed during the entire winding cycle;

wherein the same components in all figures are denoted by the same reference numerals.

In the essence of the EP 0 399 243 B1 taken and there as Figures 2 and 5 shown Figures 1 and 2 are schematically illustrated in front and side view simplified according to the invention a winding unit 1 of a winding machine.

At the winding station 1, a winding reel 8 mounted in a reel mount 9 is driven by a drive drum 2 by means of friction, which is in the form of a winding reel 1 a cross-wound bobbin 8 is wound. In this case, a withdrawn from a cop 28 thread 7 is wound on the cheese 8. This thread 7 is laid by means of a Kehrgewinderille 2 "of the drive drum 2 parallel to the axis of the cheese 8. This creates the desired Kreuzbewicklung.

The drive drum 2 is mounted on a drum shaft 2 'in the machine frame 3 of the winder. The drive of the drum shaft 2 'takes place via pulleys 4 and 4' connected by a V-belt 4 ', wherein the pulley 4' is driven by an electric motor 6 'but instead of being mediated by the belt drive 4, 4', 4 " possible and now widespread that an electric motor 6 'drives the drum shaft 2' directly. The electric motor 6 ', which is controllable in 4-quadrant operation, is controlled via an inverter 16, which receives its control commands via a control line 15' from a spool unit's own control unit 14.

Information about the peripheral speeds of the drive drum 2 and cross-wound bobbin 8 receives the control unit 14 of sensors 12, 10 and 31. For this measure, for example, as responsive to the rotation angle pulse encoder sensors 12 and 10, the angular velocities of the drive drum 2 and cross-wound bobbin 8 and give them via lines 11 and 13 to the control unit 14 further, which can then calculate the circumferential speed of the known diameter of the drive drum 2 immediately. The sensor 31 measures the angular position of a coil frame 29, which carries the coil holder 9 and in turn is mounted in a coil frame axis 30. Its signal is given by the sensor 31, e.g. can be designed as a rotational resistance, via a line 32 to the control unit 14, which then calculates the diameter of the cheese 8 from the angular position of the coil frame 29 and with the transmitted from the sensor 10 angular velocity then the peripheral speed of the cheese 8.

Alternatively, and preferred because of the higher accuracy, the peripheral speed of the cheese 8 but also by a direct measurement of the yarn speed by a sensor which is traversed by the thread and is based for example on the Kreuzkorrelations- or the LDA principle determined. This is then the thread speed Conversions well known to those skilled in the art translated into the winding speed.

In simpler machines, where one wants to limit the sensor effort, it is also possible to dispense with the measurement of the thread speed and also on the measurement of the angular position of the coil frame 29. For this purpose, one switches off the drive of the drive drum 2 temporarily, which is part of many common Bildstörverfahren anyway. If this shutdown persists long enough, the cross-wound bobbin 8 will eventually assume the same peripheral speed as the drive drum 2 because of its frictional engagement with the drive drum 2, that is to say enter a slip-free operation.

In this slip-free operation, the instantaneous diameter of the cross-wound bobbin 8 can then be determined from the angular speeds of the drive drum 2 and cross-wound bobbin 8 as well as the known diameter of the drive drum 2. In the simplest variant, one can then view this diameter as constant until the next diameter determination in the next slip-free phase, and calculate the peripheral speed of the cheese 8 with this diameter from its angular velocity. In more specific variants, however, the increase in diameter can also be calculated over the known angular speed of the cheese 8 over time, if the other known variables such as thread diameter and, for example, the yarn diameter are used. Traversing speed of the cross winding used.

In this method, however, the slip-free operation is not achieved at the beginning of the winding cycle in the constant target value of the winding speed used in the prior art, since the unpowered times are not long enough at the initially very high speeds of the package. Therefore, in these simpler machines, the prior art additionally has the problem of working with a misjudged peripheral speed of the package. The present invention avoids such errors due to the lower initial speeds of the package, and therefore has a further advantage over the prior art.

In the Figures 1 and 2 are then still a thread in the course of the thread 7 arranged thread monitor 26 is shown, which is also connected via a line 27 to the control unit 14. This thread monitor 26 shows the absence of the thread 7, ie, a thread break, On, the control unit 14 via the control line 15 'and the inverter 16, the electric motor 6' de-energized.

The inventive method can be, for example, with otherwise unchanged use of known components, such as in Figures 1 and 2 illustrated by realizing a change in the running in the control unit 14 software. In order to implement, for example, in the initial phase of the winding travel, the preferred approach of the winding spool diameter linearly approaching the target value of the winding speed to its target value after completion of the initial phase, the control unit 14, in addition to the angular speeds of cheese 8 and drive drum 2, only from the sensor 31 via From this, the control unit 14 then determines the diameter of the cheese 8 and controls via the control line 15 'the inverter 16 and thus the electric motor 6' accordingly, so that the drive drum 2 and thus the cross-wound bobbin 8 the desired Reach speed.

The difference of the method according to the invention in its just mentioned embodiment of the prior art is characterized by the FIGS. 3 and 4 clearly showing the difference in the processes between the target values of the speeds and the peripheral speeds of the package in the initial phase of the winding cycle. In this case, the figures relate to a cylindrical package with an empty tube diameter of 50 mm, which is provided up to a final diameter of 200 mm with a Kreuzbewicklung.

This is in FIG. 3 First, the course of the target value of the speed of the package as a function of its diameter, once used in the prior art constant target value of the winding speed, and the second in an embodiment of the method according to the invention in the initial phase of the winding cycle constant target value of the Auflaufspulendrehzahl. Corresponding poses FIG. 4 the course of the target value of the winding speed over the package diameter.

In both diagrams, the situation for a target value of the winding speed of 1,200 m / min is plotted, which target value is used in the prior art during the entire winding cycle, while in the illustrated embodiment of the Invention in the initial phase of the winding cycle, the target value of the speed of the package is kept constant at the value corresponding to the Auflaufspulendrehzahl at a winding speed of 1,200 m / min at a predetermined Auflaufspulendurchmesser of 95 mm to complete the initial phase.

This is good in FIG. 3 can be seen in which the target value of the Auflaufspulendrehzahl in revolutions per minute over the Auflaufspulendurchmesser in mm is plotted. The curve DZ _SdT then shows the known hyperbolic relationship between speed and diameter at constant peripheral speed, as it is present in the known from the prior art method. The method according to the invention shown here, however, uses a reduced winding speed in the initial phase of the winding cycle by keeping the target value of the package speed until the diameter of the package of d _AA = 95 mm is reached, which is at a package diameter of 95 mm to the desired target value of a peripheral speed of the package of 1,200 m / min. This shows the speed curve DZ _{E of} the course _{according to} the _invention of the speed _{target value} , which is constant until reaching d _AA = 95 mm, and then, so for larger _{package diameter} , congruent with the speed _{target value curve} DZ _{SdT of} the prior art.

The same situation is in again FIG. 4 in which the target value of the winding speed in m / min is now plotted over the package diameter in mm. Now, the curve v _SdT clearly shows the constant target value of the winding speed used in the prior art of 1,200 m / min, while the speed curve v _{E of} the embodiment of the invention shown here in the initial phase of the winding cycle, so here until reaching the conclusion of Initial phase determining package diameter of d _AA = 95 mm, the known at constant speed linear relationship between peripheral speed and diameter, and for larger diameter than d _AA = 95 mm, the two winding speed target curves v _SdT and v _E congruent.

FIG. 5 shows for the same situation as the 3 and 4 and a common yarn the energy consumption measured during the winding, as it results in the usual in the prior art method of a constant target value of the winding speed.

The energy consumption in Ws per km of coiled thread length is plotted over the number of the image interference cycle. Thus, the right-hand axis does not directly represent the diameter of the package, but rather the consecutive number of a series of periodically performed image-disrupting cycles, which grow monotonically with the package diameter.

The figure clearly shows the energy requirement increased by up to 40% at the beginning of the winding cycle, which is essentially caused by the initially very high speed of the package with the bearing stress and strong friction between package, drive drum and yarn caused thereby. This energy requirement in the initial phase of the winding cycle can be significantly reduced by the inventive method with a suitable design.

Finally, in FIG. 6 the maximum loss of productivity in the Fig. 3 to 5 discussed embodiment of a method according to the invention over the prior art. It is assumed that in the prior art during the entire winding cycle with a winding speed of 1200 m / min could be wound without any interruption, while in the inventive embodiment, the winding speed according to the Fig. 4 is reduced compared to a package diameter of d _AA = 95 mm. In this, for the inventive method maximum unfavorable case, the inventive method in the initial phase of the winding cycle with increasing Auflaufspulendurchmesser always takes a little longer until it reaches this diameter. This production time extra demand is plotted as a percentage of the total production time of the prior art on the vertical axis against the package diameter in mm on the right axis.

As expected, the production time increases several times to d _AA = 95 mm and then remains constant. In this case, the smaller the final diameter of the package will be, the higher the then achieved production time. Thus, the production time describes more demand for the also in the FIGS. 3 to 5 used Auflaufspule with a final diameter of 200 mm the in FIG. 5 with "200 mm" curve and reaches a final value of 5.5%, while it describes in an otherwise identical package with a final diameter of 260 mm the curve marked "260 mm" curve and reaches a final value of 3.2%.

It is therefore already evident in these theoretically maximally unfavorably determined courses that a potential loss in productivity of the methods according to the invention is far outweighed by their advantages, especially since, as previously discussed, this productivity loss to this extent will not occur in practice, but in many situations even a productivity gain is expected.

Although the inventive method for winding a package and its associated device have been described above with reference to selected exemplary embodiments, further variants as well as combinations of the described specific embodiments are conceivable for the person skilled in the art. So, for example, after completion of the initial phase of the winding cycle not necessarily be weiterzuespult exclusively with constant peripheral speed of the package, but the winding speed can be made quite yarn tension dependent when using thread tension sensors to avoid yarn breaks and increase productivity, as is well known in the art.

Further, for the sake of completeness, it should be pointed out that the indefinite article does not exclude that components designated by it can not also be present multiple times. Likewise, the description of a particular component does not necessarily mean that its functions could not be distributed among several alternative components, or that the functions of several described components could not be grouped together.

Claims (9)

Method for winding a package (8),
characterized,
in that, in an initial phase of the winding travel, the winding is carried out with a target value of the winding speed which is reduced in relation to a target value of the winding speed after completion of the initial phase. A method according to claim 1, characterized in that the length of the initial phase of the winding cycle and the target values of the winding speed in the initial phase and after completion of the initial phase are determined so that during the entire winding cycle, the speed of the package does not exceed a predetermined maximum speed value. A method according to claim 1 or 2, characterized in that the target value of the winding speed after completion of the initial phase of the winding cycle is greater than a maximum target value of the winding speed, with which the winding could be performed during the entire winding cycle with the same yarn quality. A method according to claim 1 or 2, characterized in that the package (8) by rewinding a plurality of delivery bobbins (28) is produced, and that a reduction of the target value of the winding speed in the respective last phase of rewinding one or more of the delivery bobbins (28) in the initial phase of the winding cycle, compared with the rewinding after the initial phase of the winding cycle, is omitted or reduced. Method according to claim 1 or 2, characterized in that the target value of the winding speed reduced in the initial phase of the winding cycle is brought to the target value of the winding speed after completion of the initial phase such that the initial phase of the winding cycle at a predeterminable diameter (d _AA ) of the package ( 8) is completed. A method according to claim 5, characterized in that the reduced in the initial phase of the winding cycle target value of the winding speed is linearly added to the diameter increase of the package (8) to the target value of the winding speed after completion of the initial phase. A method according to claim 1 or 2, characterized in that the reduced in the initial phase of the winding travel target value of the winding speed is introduced in steps of constant speed to the target value of the winding speed after completion of the initial phase. Apparatus for winding a package (8) comprising - A holder (9) for rotatably supporting the package (8), a drive for rotating the package (8), a control unit (14) for controlling the rotation of the package (8) via the drive, characterized,
in that the control unit (14) is set up to carry out, in an initial phase of the winding cycle, winding with a target value of the winding speed which is reduced in relation to a target value of the winding speed after completion of the initial phase. Apparatus according to claim 8, characterized in that it is at the device (1) is a workstation (1) of a winder or a spinning machine.

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