EP1656317A1

EP1656317A1 - Bobbin winding device

Info

Publication number: EP1656317A1
Application number: EP04737416A
Authority: EP
Inventors: Peter Schmalholz
Original assignee: Starlinger and Co GmbH
Current assignee: Starlinger and Co GmbH
Priority date: 2003-08-20
Filing date: 2004-08-12
Publication date: 2006-05-17
Anticipated expiration: 2024-08-12
Also published as: CL43724B; WO2005019081A1; BRPI0413735B1; ATE349393T1; BRPI0413735A; RU2339564C2; EP1656317B1; US20060261206A1; CN1839083A; SI1656317T1; RU2006108547A; ZA200601269B; CN100509599C; PL1656317T3; EG24163A; AT502728B1; ES2279378T3; DE502004002483D1; MXPA06001926A; AR045242A1

Abstract

A bobbin winding device for producing a bobbin by winding up a yarn or tape yarn onto a bobbin core comprises: a holding device (12) for holding and rotating a bobbin core (8) about a rotation axis (A); yarn pressing means (7) for pressing a yarn (1) or tape yarn against the peripheral surface of a bobbin (9) forming on the bobbin core (8), whereby the yarn pressing means can move in an essentially radial manner relative to the rotation axis (A); a traversing yarn guide (10), which is placed near the yarn pressing means (7) and which is provided for the to-and-fro movement of the yarn (1) or tape yarn along the rotation axis (A), and; yarn supporting means (14) for guiding the yarn, which is supplied to the bobbin or to the bobbin core, in an axially stationary manner relative to rotation axis (A). The yarn pressing means (7) can, together with the yarn supporting means (14), move in an essentially radial manner relative to the rotation axis (A) so that the distance (z) between the yarn pressing means (7) and the yarn supporting means (14) remains constant.

Description

Coil winder

The invention relates to a coil winding device for producing a coil by winding a thread or ribbon on a spool core, according to the preamble of claim 1.

Coil winding devices serve to wind threads or ribbons onto a spool core, which usually has a cylindrical or conical shape, into a spool. In a known coil winding apparatus shown in a schematic diagram in side view in FIG. 1, a thread 1 passes immediately after its production to a first deflection roller 2 of the coil winding apparatus. From there, the thread 1 continues to a so-called "dancer" 3, which is a spring-biased, deflectable deflection roller, and is deflected and tensioned on the dancer From the dancer 3, the thread 1 continues to another deflection roller 4, and from there to a nozzle 5. The nozzle comprises thread deflection means 6, which may be formed as overflow bracket, and a pressure roller 7, the thread 1 at the beginning of a coil winding operation first against the peripheral surface of a spool core 8 and then, while a coil 9 from the supplied yarn, presses against the circumference of the developing coil 9. The spool core 8 is rotatable about an axis of rotation A. On the nozzle 5 sits between the deflection means 6 and the pressure roller 7, a yarn guide 10, the thread axially over the coil hin- and moved so as to ensure a uniform construction of the coil according to a predetermined winding scheme To maintain eichmäßigen contact pressure of the pressure roller 7 to the coil 9, the nozzle 5 is pivotable about a pivot axis C and can compensate for the increasing coil diameter. The arrow p (D) represents the deflection angle of the distributor 5 as a function of the coil diameter D.

The coil 9 or the spool core 8 is driven by a motor, not shown, with an angular velocity Ω. For the quality of the coil winding, the tension in the thread 1 during the winding on the coil 9 is crucial. If the tension in the thread decreases, the engine speed must be increased to restore the desired tension. To control the engine speed of the dancer 3, which also provides for a certain compensation of the thread tension due to its spring bias. If the dancer 3 drops due to a decreasing tension in the thread 1, this causes an increase in the engine speed. Increases the dancer 3 due to increased thread tension, the engine speed is reduced. Variations in the thread tension, which make engine speed changes necessary arise when the Spool diameter D increases or when the yarn production and thus the supply of the thread to the coil winding device is faster or slower.

Another reason for variations in the yarn tension is the axial movement of the yarn guide 10, as explained with reference to the perspective view of FIG. 2. Fig. 2 shows the path of the thread 1 of the guide roller 4 via a deflection means 6 in the form of a straight overflow bracket, through the yarn guide 10 and through the pressure roller 7 on the spool 9. When the yarn guide 10 in its axial reciprocation is located at the axial ends of the coil 9, the yarn 1 is fed to the coil edge, describing a longer path from the guide roller 4 to the coil edge, as if the yarn guide 10 is in the middle of the coil and the yarn 1 while the way the deflection roller 4 to the coil center describes (dashed lines). Due to the shortening thread path, the thread loosens in the center of the coil. Since, in general, the axial movement of the yarn occurs at a relatively high frequency, the yarn tension variation caused thereby can not be compensated for by a speed control of the bobbin drive motor, since any controller, such as e.g. a PID controller, either too slow or under such rocking conditions, i. behavior would tend to be unstable. The influence of the coil edge or in the center of the coil of different lengths of thread paths on the thread tension could therefore previously be kept within limits only by the largest possible distance between the guide roller 4 and the pressure roller 7. At a greater distance reduces the spanned between the guide roller 4 and the two positions of the thread 1 at the coil edges angle and thus also the factor (cosine) of the change in length.

Referring back to the illustration of FIG. 1, it can be seen that, depending on the coil diameter D, the yarn path length x (p) between the stationary deflection roller 4 and the deflecting means 6 fastened on the guide apparatus 5 changes, since the increase in the coil diameter to one Deflection of the nozzle 5 in the direction of the guide roller 4 leads. Likewise, the distance z (p) between the pressure roller 7 arranged on the distributor 5 and the stationary deflection roller 4 changes with the deflection of the distributor 5. The distance y between the pressure roller 7 and the deflection means 6 remains constant independently of the deflection of the distributor 5 ,

The effects of incorrect thread tension on the package quality are enormous. At this point, should not be discussed in detail on the choice of thread tension during winding, but in general one can say that an incorrect thread tension and in the Specifically, a varying tension of the thread between the spool edge and the spool center causes the thread to fall off the edge of the spool as shown in FIG. It can be seen from Fig. 3 that the thread 1 has dropped from the edge of the spool 9 on the spool core 8 and would wrap around the spool core as a result. This dropping of the thread can already affect the production performance of the bobbin in the production process and lead to machine stops, or in the subsequent use of the coil, for example when weaving the thread, and thereby lead to machine stops or machine damage.

That the thread does not fall down is thus one of the most important features of a spool. However, it has been difficult to satisfy this criterion satisfactorily with the known coil winding apparatuses. In particular, it was not possible due to the high winding frequency, to compensate for the fluctuating thread tensions between the coil edge and coil center by motor control systems.

The invention has therefore set itself the task of creating a coil winding device in which the above-mentioned disadvantages are avoided and can be wound with the coils of substantially increased quality.

The coil winding device according to the invention for producing a bobbin by winding a thread or ribbon on a bobbin comprises a holder for holding and rotating a bobbin about an axis of rotation, Fadenanpressmittel for pressing a thread or ribbon to the peripheral surface of a forming on the bobbin coil, the Fadenanpressmittel are substantially radially movable with respect to the axis of rotation, wherein the Fadenanpressmittel are preferably designed as a pressure roller with a longitudinal axis aligned parallel to the axis of rotation, a near the Fadenanpressmitteln arranged traversing yarn guide for reciprocating the thread or ribbon along the axis of rotation, and thread support means to guide the yarn fed to the spool axially stationary with respect to the axis of rotation. The solution according to the invention is that the Fadenanpressmittel are movable together with the yarn support means substantially radially with respect to the axis of rotation, so that the distance between the Fadenanpressmitteln and the yarn support means remains constant. By this measure, the influence of the increasing coil diameter during winding is switched to the thread tension.

It should be noted that the term "thread" is used in the following description, but in the context it should be understood that it also includes tapes includes. As an embodiment of a ribbon is a stretched, single or multi-layer plastic tape called.

It should be further noted that the bobbin is usually an element of cardboard, plastic or metal, which is attached to a rotatable support and forms a support for the aufzuspulenden thread. In some applications, however, the holder may be formed as a spindle on which the thread is wound directly and after completion of the coil, this is withdrawn from the spindle. In such applications, the term coil core as used herein refers to the spindle.

Although it is conceivable to arrange the traversing yarn guide without further thread support between the Fadenanpressmitteln and the thread support means, it is preferred due to a calmer feeding the thread to the coil when at least one Fadenumlenkmittel is arranged between the Fadenanpressmitteln and the thread support means, which together with the Fadenanpressmitteln and the thread support means is radially movable with respect to the axis of rotation. In this case, the Fadenumlenkmittel may be formed as Fadenwegausgleichsmittel, which compensates for the different length of thread from the thread support means for Fadenanpressmittel between the coil edge and the coil center, as will be explained in more detail below. In a very robust and reliable embodiment, the thread path compensation means is designed as a curved radius overflow bracket in a predetermined radius. According to the prior art, the formation of the Fadenwegausgleichsmittels could be optimized as a circular arc overflow bracket only for a certain diameter of the coil, was tuned at the radius of the overflow bracket to the distance between the yarn support means and the overflow bracket, while continuing to exceed or fall below this particular coil diameter different lengths of thread paths were given to the coil edge and coil center. According to the invention the distance between the thread support means and overflow bar remains unchanged regardless of the diameter, so that achieved with a circular arc overflow bracket whose radius is tuned to the sum of the thread paths from the thread support means to overflow bar and on to Fadenanpressmittel, perfect Fadenwegausgleich between coil edge and coil center for all coil diameter can be.

In a preferred embodiment of the invention Spulenwickelvomchtung the Fadenanpressmittel, the thread support means and optionally also the Fadenumlenlαnittel are pivotable about a common pivot axis which is parallel to the axis of rotation of the coil. In a mechanically very stable and compact Embodiment are the Fadenanpressmittel, the thread support means and optionally the Fadenumlenkmittel are integrated into a nozzle, which is pivotable about said pivot axis.

High constructive reliability of the coil winding apparatus is achieved when the thread support means are formed as a roll or eyelet. In a very robust embodiment of the invention, the Fadenumlenkmittel is designed as an overflow bracket.

In a preferred embodiment of the coil winding device according to the invention, a yarn tension sensor is arranged upstream of the thread support means. However, unlike the prior art devices, this yarn tension sensor is not subject to rapid variations in yarn tension due to different bobbin diameters, so that its output can be used with high reliability for yarn tension control.

In a first, mechanically simple embodiment of the yarn tension sensor is arranged stationary. Due to the design, the deflection angle of the thread on the thread tension sensor would change in this embodiment, which is due to the change in position of the thread support means with increasing coil diameter. As a result, the measurement results of the yarn tension sensor could be slightly falsified. To remedy this possible disadvantage, in one embodiment of the invention, a stationary Fadenumlenkmittel can be arranged between the yarn support means and the yarn tension sensor.

In an alternative embodiment, the yarn tension sensor is movably arranged together with the yarn support means so that the distance therebetween remains constant. In this embodiment, the above-mentioned problem of varying the deflection angle of the yarn at the yarn tension sensor does not occur.

In a preferred embodiment of the invention, the thread tension sensor comprises a cantilever arm with a strain gauge, wherein the cantilever carries a Fadenumlenkmittel, which preferably causes a deflection of the thread or ribbon by 150 to 180 °.

The inventive measures to prevent varying path lengths of the thread when winding on the coil and the consequent prevention of high voltage thread tension fluctuations, it has become possible to use the output signals of the thread tension sensor for a coil motor control. For this purpose, the output signals of the yarn tension sensor representative of the yarn tension are fed to a controller, preferably a PID controller, as input signals, which controller controls the rotational speed of the coil drive motor in dependence on the input signals and a reference signal. Electronic control can significantly improve the quality of the coils. The drive motor preferably rotates the holder of the spool core or the Fadenanpressmittel.

The invention will now be described by way of non-limiting embodiments

Referring to the drawings explained in more detail. In the drawings show:

Fig. 1 is a schematic diagram of a known coil winding device;

Fig. 2 is a Fadenumlenk- and -anpressmechanismus in the known

Coil winder;

3 shows the effects of incorrect thread tension when producing a coil; FIGS. 4A and 4B schematically show a first embodiment of the invention

Coil winding apparatus with different coil diameters;

Fig. 5 is a thread path compensating means as part of an inventive

Coil winder;

Fig. 6 shows the effectiveness of the thread path compensating means of Fig. 5 in comparison with a straight overflow bar;

Fig. 7 is a block diagram of an electronic engine control in the erfϊndungsgemäßen

Coil winder;

8 shows a thread tension regulator in the case of the coil winding device according to the invention in perspective;

FIG. 9 shows the geometric relationships of the coil winding device of FIG. 4B; FIG.

10 shows the geometric angle correction of the pulleys on the

Coil winder;

11 shows a diagram of the thread force as a function of the bobbin diameter;

Fig. 12 shows the geometric relationships of another embodiment of a

Coil winder;

FIG. 13 shows the geometric angle correction of the deflection rollers on the coil winding device of FIG. 12; FIG.

Fig. 14 is a diagram of the thread force as a function of the coil diameter in the

Embodiment of Fig. 12;

Fig. 15 shows the geometric relationships of another embodiment of a

Coil winding device; 16 shows a diagram of the thread force as a function of the coil diameter in the embodiment of FIG. 15.

FIG. 4A schematically shows a first embodiment of the coil winding device according to the invention, which is a further development of the known coil winding device according to FIG. A thread 1 or ribbon passes immediately after its production to a first guide roller 2 of the coil winding device. From there, the thread 1 continues to a thread tension sensor 13, which is equipped with a deflection roller. An embodiment of this yarn tension sensor 13 will be described below in detail. From the yarn tension sensor 13, the yarn 1 continues to run to a yarn support means 14, which may be formed as a deflecting roller rotatably mounted on a cantilever 15a of a nozzle 15. The nozzle 15 further comprises thread deflecting means 6, which - as in this embodiment - may be formed as a straight overflow bracket, and a pressure roller 7, the thread 1 at the beginning of a coil winding operation first against the peripheral surface of a spool core 8 and then while a Coil 9 builds up from the supplied yarn, presses against the circumference of the developing coil 9. The spool core 8 is rotatable about the axis of rotation A. On the diffuser 15 sits between the deflection means 6 and the pressure roller 7, a traversing yarn guide 10, which moves the yarn back and forth axially over the coil and thus ensures a uniform structure of the coil according to a predetermined winding scheme. In order to maintain a uniform contact pressure of the pressure roller 7 to the coil 9 with increasing coil diameter D, the nozzle 5 is pivotable about a pivot axis C and can thus compensate for the increasing coil diameter. The arrow p (D) represents the deflection angle of the distributor 5 as a function of the coil diameter D.

By the inventive measure to integrate the thread support means 14 via the cantilever 15a in the nozzle 15, in contrast to the coil winding device according to the prior art, the distance x between the thread support means 14 and the deflection means 6 and the distance z between the thread support means 14 and Fadenanpressmittel 7 regardless of the current diameter D of the coil 9 and independent of the instantaneous deflection angle p (D) of the nozzle 15 constant. This is best seen in comparison with FIG. 4A, in which the coil 9 still has a small diameter D, with FIG. 4B, wherein FIG. 4B shows the coil winding device according to the invention of FIG. 4A at a later stage of the coil winding operation in which the coil diameter has already increased considerably and thus the distributor is pivoted by a larger angle p (D). As you can see, but regardless of the deflection angle of the distributor between the thread support means 14, Deflection means 6 and Fadenanpressmittel 7 spanned triangle with the sides x - y - z constant. Thus, the influence of the changing coil diameter on the thread tension was successfully eliminated.

However, the embodiment of the coil winding device according to the invention according to FIGS. 4A and 4B with a thread deflection means 6 designed as a straight overflow bow still has the dependence of the thread path length described above with reference to FIG. 2 on the position of the thread at the center of the coil or coil edge. In order to minimize this influence, a large distance x between the thread support means 14 and the thread deflection means 6 or a large distance z between the thread support means 14 and the thread pressing means 7 is required.

One way to fully compensate for the different Fadenweglängen at the coil edge and coil center is shown in Fig. 5 in perspective and is based on the formation of Fadenumlenkmittels as Fadenwegausgleichsmittel in the form of a curved overflow bar 16, wherein the radius of curvature of the overflow bar of the length L of Thread 1 between thread support means 14 and overflow bracket 16 corresponds. If, in the embodiment of FIGS. 4A and 4B, a curved overflow bar were installed instead of the straight overflow bar 6, the sum of the distances x and y in each deflection point of the thread would be constant with respect to the coil axis, whereas the distance y would be smaller towards the coil edges would. The effectiveness of this thread length compensation is shown in Fig. 6 in comparison between a straight overflow bracket 6 and a curved overflow bracket 16. It can be seen that in the case of a straight overflow bar 6, the thread path in the center of the coil projects beyond the overflow bar by the distance L1. This leads to a decrease in the thread tension each time the thread is in the center of the coil. Although the formation of the Fadenumlenkmittels is known as a curved overflow bracket 16 per se, this measure obtains only by the present invention, in which the distance between the thread support means 14 and overflow bar 16 regardless of the bobbin diameter remains constant, its full effect. In the prior art, it was only possible to optimize the radius of curvature of the overflow bar for a single bobbin diameter, so that at each deviating bobbin diameter there were further path length differences of the thread between the bobbin edge and bobbin center.

Referring again to the illustration of Fig. 5, there is schematically illustrated a motor 11 which drives a bobbin holder 12 in the form of a spindle and thereby rotates the bobbin 9 at the angular velocity Ω. As mentioned above, the tension in the yarn 1 during the winding on the coil 9 is crucial for the quality of the coil winding. If the tension in the thread decreases, the engine speed must be increased in order to restore the desired tension; with increasing tension, the engine speed must be reduced. As a result of the invention, the fluctuations of high frequency of the thread sphagnum were largely or completely eliminated during reciprocation of the traversing yarn guide 10, it is thus possible for the first time to use an electronic control circuit for controlling the engine speed, without this control circuit tend to oscillate would. The desired thread tension can be set much more accurately by the electronic control than in the prior art, where this was realized mechanically via a spring bias on a dancer. The electronic control circuit is shown schematically in the block diagram of FIG. 7. In this case, the motor 11 rotates about the bobbin holder 12, the coil 9 and thus generates in the wound on the coil 9 thread 1 a certain thread tension, which is tapped by the yarn tension sensor 13 and fed to a control circuit 17 as an electrical signal TS. The control circuit 17 may advantageously be designed as a PI controller or PID controller. If the control circuit 17 determines that the instantaneous yarn tension deviates from a setpoint Ref, it generates (or changes) an output signal OS which acts on a motor driver 18 to adjust the speed of the motor 11 to bring the yarn tension to the setpoint becomes. The motor driver 18 may be formed, for example, as a static frequency converter depending on the design of the motor 11.

In Fig. 8, an embodiment of the yarn tension sensor 13 is shown in detail. The yarn tension sensor 13 comprises a deflection roller 13 a, which is positioned at the free end of a cantilever (cantilever) 13 b. The other end of the boom is fixedly mounted on a support 19. Approximately half the length of the cantilever 13b, a strain gauge (DMS) 13c is mounted, which constantly measures the tension of the thread 1 passing around the roller 13a. More specifically, the strain gauge 13c measures the elongation or compression of the cantilever 13b by the thread tension. The measurement signal generated by the strain gauge is subsequently used for speed control, as explained above. The tensile force of the thread 1, which acts on the deflection roller 13a, depends on the angle of the incoming and outgoing thread end to the DMS measuring direction. Depending on the design, the angles change with the coil diameter or remain constant. In the following, some variants are described with reference to the drawings, wherein the geometric relationship between the variable coil diameter D and the thread force B (D) for a given force S analytic is pictured. S is the sum of the forces acting on the DMS portions of the thread forces B (D) and is constant here.

First, the geometry of the coil winding device of Fig. 4B will be explained with reference to Figure 9, which has a stationary guide roller 13a of the yarn tension sensor and a variable angle between guide roller 13a and thread support means 14. In this variant, the angle remains constant. The size of the constant portion of the tapered thread end depends on the angle α and on the thread tension measuring direction v. The proportion of the running away portion is related to the coil diameter. This dependency is described in detail below. From Fig. 9 it can be seen that the angles α and γ must be corrected because of the radius of the pulleys in order to obtain the direction of force of the ribbon. The required angular correction of the pulleys is shown in FIG.

The following quantities are created by simple angle relationships from the constructively given position parameters:

κ (D) = ε - β - p (D) dmsh {D) = ^ db ² + dmsd ² - 2 - db - dmsd ■ cos (fc (D)) dmsd ² - dmsb ² (D) - db ¹ γ {D) = arccos -μ 2 • dmsd ^■ dτnsb (D)

Taking into account the roll diameter, the angle γ (D) becomes γc (D) (see Fig. 10): γc {D)

Analogously to γc (D), αc results

I r_ac = 90 ° + c - arccos' DMS dmsa If the inclination of the force direction v of the strain gauge (DMS) is added or subtracted from the angles determined above, then the thread force B (D) can be calculated from the predetermined force S.

B (D) = S ^l sin (orc + v) + ήn (γc {D) -v)

In Fig. 11, the course of the thread force B (D) in Newton [N] depending on the coil diameter D in [m] is exemplified. The angle v was chosen such that the strain gage direction is the angular symmetry of the thread force of roll 2 and the angular symmetry of the end positions at D = 40 mm and D = 180 mm of the thread support means 14. It should be noted that the angular symmetry of the thread to the thread support means 14 is not reached at the mean coil diameter D = 90mm, but only at larger diameter D. However, the main factor of asymmetry of the maximum force has another reason: The force to roll 2 is constant, the largest contribution of the thread to the thread support means 14 is obtained when the thread is parallel to the strain-strain direction and not when the strain-strain direction is in the angular symmetry of the two thread forces.

In Fig. 12, an embodiment of the coil winding device according to the invention is shown, which has a mitschwenkende with the nozzle 15 deflection roller 13a of the yarn tension sensor and a variable angle between this guide roller 13a and the stationary guide roller 2. The deflection roller 13a of the yarn tension sensor is connected to the nozzle 15 via a cantilever 15b. As a result, the strain gauge measuring direction also twists. Thus, in this variant, the angle α depends on the coil diameter. In this variant, the angle of the thread to the thread support means 14 and the direction of force of the DMS is constant. Instead, the angle changes from the DMS to the roller 2. This changing angle depends in contrast to the previous variant not only on the bobbin diameter D, but also on the height of the position of the coil winding device! Again, the angles α and γ must be corrected, as shown in Fig. 13.

This results in the following variables by simple angle relationships from the constructively given position parameters: κ (D) = β + p (D) - ε

Taking into account the roller diameters, the angle γ results in γc (see FIG. 10): γc = 90 ° + - arccos' DMS dmsb

From Fig. 13, αc (D) becomes: ccc (D) = a (D) - 90 ° + arccos ^r DMS ^{+ r} A dmsa (D)

If the inclination of the force direction v of the strain gage is added to the angle γc determined above, the thread force B (D) can be calculated from the predetermined force S.

1 B (D) = S - cos (c (D)) + cos (; Λ-v - γc)

In FIG. 14, the course of the thread force B (D) in Newton [N] is shown as an example depending on the coil diameter D in [m].

In a further variant of a coil winding device according to the invention shown in FIG. 15, the deflection roller 13a of the thread tension sensor is arranged in a stationary manner. By means of an additional deflection roller 19, a constant resultant force direction is achieved on the deflection roller 13a of the thread tension sensor. In this variant, the force directions of the thread forces remain constant. They are therefore not dependent on the coil diameter D. Both angles γc and c must be corrected again: γc = 90 ° + γ - arccosj DMS ⁺ B dmsb

Analogously to γc, αc results in ac = 90 ° + - arccos' DMS dmsa

If the inclination of the force direction v of the strain gage is added or subtracted from the angles determined above, the thread force B can be calculated from the predetermined force S.

B = S - sin (ac + v) + sin (γc - v)

In Fig. 16, the course of the thread force B in Newton [N] is exemplified. It can be seen that it is completely independent of the coil diameter.

Claims

Claims:

A bobbin winding apparatus for producing a bobbin by winding a thread or ribbon on a bobbin, comprising: a holder (12) for holding and rotating a bobbin (8) about an axis of rotation (A), suture pressing means (7) for pressing a thread (1 ) or ribbon to the peripheral surface of a on the spool core (8) forming coil (9), wherein the Fadenanpressmittel are substantially radially with respect to the axis of rotation (A) movable, wherein the Fadenanpressmittel (7) preferably as a pressure roller with a parallel to Rotary axis (A) aligned longitudinal axis are formed, a near the Fadenanpressmitteln (7) arranged traversing thread guide (10) for reciprocating movement of the thread (1) or ribbon along the axis of rotation (A), thread support means (14) to the Spool or coil core supplied yarn with respect to the axis of rotation (A) axially stationary to drive, characterized in that the Fadenanpressmittel (7) together with the yarn support means (1 4) are movable substantially radially with respect to the axis of rotation (A), so that the distance (z) between the Fadenanpressmitteln (7) and the thread support means (14) remains constant.

2. coil winding device according to claim 1, characterized in that between the Fadenanpressmitteln (7) and the thread support means (14) at least one Fadenumlenkmittel (6, 16) is arranged, which together with the Fadenanpressmitteln (7) and the thread support means (14) radially in Reference to the axis of rotation (A) is movable.

3. coil winding device according to claim 2, characterized in that the Fadenumlenkmittel (16) is designed as Fadenwegausgleichsmittel.

4. Spulenwickelvorrichtung according to any one of the preceding claims, characterized in that the Fadenanpressmittel (7), the thread support means (14) and, if dependent on claim 2 or 3, the Fadenumlenkmittel (6, 16) about a common pivot axis (C) pivotally are parallel to the axis of rotation (A).

5. coil winding device according to claim 4, characterized in that the Fadenanpressmittel (7), the thread support means (14) and optionally the Fadenumlenkmittel (6, 16) are integrated in a diffuser (15) which is pivotable about the pivot axis (C).

6. Spulenwickelvorrichtung according to any one of the preceding claims, characterized in that the thread support means (14) are formed as a roll or eyelet.

7. coil winding device according to claim 2, characterized in that the Fadenumlenkmittel (6, 16) is designed as Umlenkbügel.

8. bobbin winding device according to claim 3, characterized in that the Fadenwegausgleichsmittel (16) is formed as in a predetermined radius curved Umlenkbügel.

9. coil winding device according to one of the preceding claims, characterized in that upstream of the yarn support means (14) a yarn tension sensor (13) is arranged.

10. coil winding device according to claim 9, characterized in that the yarn tension sensor (13) is arranged stationary.

11. coil winding device according to claim 10, characterized in that between the thread support means (14) and the yarn tension sensor (13) a stationary Fadenumlenkmittel (19) is arranged. [Fig. 15]

12. coil winding apparatus according to claim 9, characterized in that the yarn tension sensor (13) is movable together with the yarn support means (14), so that the distance between them remains constant. [Fig. 12]

13. coil winding device according to one of claims 9 to 12, characterized in that the thread tension sensor (13) comprises a cantilever (13b) with a strain gauge (13c), wherein the cantilever (13b) carries a Fadenumlenkmittel (13a), preferably a deflection of the thread (1) or ribbon by 150 to 180 ° causes.

14. coil winding device according to one of claims 9 to 13, characterized in that for the thread tension representative output signals (TS) of the yarn tension sensor (13) a controller (17), preferably a PID controller, as input signals can be supplied, wherein the controller (17 ) controls the rotational speed of a spool drive motor (11) in response to the input signals and a reference signal (Ref).

15. coil winding device according to claim 14, characterized in that the drive motor (11) rotates the holder (12) of the spool core (8) or the Fadenanpressmittel (7).