WO2020212181A1

WO2020212181A1 - Spool spindle

Info

Publication number: WO2020212181A1
Application number: PCT/EP2020/059767
Authority: WO
Inventors: Heinz Waltermann; Jürgen KOWALSKI; Rainald Voss
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2019-04-17
Filing date: 2020-04-06
Publication date: 2020-10-22
Also published as: JP7447145B2; CN113767057A; JP2022529659A

Abstract

The invention relates to a spool spindle for winding multiple threads to form spools, comprising a projecting spool mandrel (2) for receiving multiple hollow-cylindrical spool tubes (3.1 - 3.4). The spool tubes (3.1 - 3.4) can be placed after one another onto the spool mandrel (2) and they can be axially fixed relative to a tube stop (4) around the circumference of the spool mandrel (2) via a clamping means (5). With a plurality of spool tubes (3.1 - 3.4), in order to obtain a secure hold to the circumference of the spool mandrel (2), each of the spool tubes (3.1 - 3.4) has a fixing element (7) at at least one end (6.1, 6.2), which is designed such that it can be elastically deformed in order to form a radial tensioning of the spool tube (3.1 - 3.4) on the circumference of the spool mandrel (2).

Description

Winding spindle

The invention relates to a winding spindle for winding several threads into bobbins according to the preamble of claim 1.

A generic winding spindle for winding several threads into bobbins is known from WO 2010/094553 A1.

When manufacturing synthetic threads in a melt spinning process, it is common for the threads produced within a spinning position to be wound parallel to one another to form bobbins. Each of the bobbins is generated on the circumference of a bobbin tube, several of which are carried as a tube stack on the circumference of a winding spindle and are driven through the winding spindle at a predetermined peripheral speed. It is customary that the bobbin tubes are firmly connected to the circumference of the bobbin spindle to at the maximum speeds of the threads of for example 6,000 m / min. and maximum reel weights of, for example, 25 kg to ensure a secure hold. Therefore, it is common to fix the bobbin tubes by clamping means on the circumference of the winding spindle. Such clamping means are usually integrated in the winding spindle and act on each of the winding tubes.

The generic winding spindle has a clamping means which acts exclusively on a winding tube assigned to the free end of the winding spindle in order to fix the adjacent winding tubes together in the tube stack on the circumference of the winding spindle. For this purpose, the winding tubes are axially braced against one another in order to generate the necessary holding forces. In the case of very long cantilevered winding spindles which take up a plurality of winding tubes one behind the other, relatively high axial forces must therefore be applied to fix the winding tubes, which leads to a very high load on the winding tubes.

It is therefore the object of the invention to improve the generic winding spindle in such a way that a plurality of winding tubes can also be securely fixed on the circumference of a winding mandrel of the winding spindle. Another aim of the invention is to create a winding spindle of the generic type which essentially does without internal tensioning elements.

This object is achieved according to the invention in that each of the winding tubes has a fixing element at at least one end and that the fixing element is designed to be elastically deformable for the purpose of radial bracing of the winding tube at the circumference of the spool dome.

Advantageous further developments of the invention are defined by the features and combinations of features of the respective parent claims.

The invention has the particular advantage that within the axially more or less tensioned tube stack, each of the bobbin tubes is held by radial tension on the circumference of the bobbin mandrel. Thus, on the one hand, a centering ability is achieved and, on the other hand, an automatic tensioning of the bobbin tubes without additional tensioning means is effected. Elaborate tensioning devices within the reel mandrel can thus be avoided, so that the load-bearing cross section of the reel mandrel expands up to the inside diameter of the reel tubes. The axial tensioning of the Hül senstapels is only required to deform the fixing elements, which then initiate a radial tension for fixing each of the winding tubes.

In a first advantageous development of the invention, the fixing element is formed by a rubber ring which is attached to the front end of the winding tube in a Eindre hung. This means that even the smallest displacements in the axial direction can generate a high, radially acting clamping force between the winding tube and the winding mandrel due to its material behavior.

In order to generate a radial tension within a tube stack at each end of the winding tubes, the development of the invention is preferably carried out in which the winding tube has a separate rubber ring at both ends that protrudes over the ends of the winding tube in a relieved state. The pushing together of the winding tubes within the tube stack can already be used advantageously to generate the radial clamping forces. In order to be able to hold the bobbin tubes in the tube stack with a certain axial pre-tension on the circumference of the bobbin mandrel, it is further provided that the bobbin tubes are designed identically and that the tensioning means is formed by a clamping ring on the circumference of the bobbin mandrel, which the bobbin tube at the free end of the Coil mandrel is assigned. By fixing the clamping ring on the circumference of the spool mandrel, an axial minimum preload required for the radial tensioning of the spool tubes is retained on the tube stack.

According to a further advantageous development of the invention, the Fixiermit tel is formed by a plurality of elastic clamping tongues at the end of the winding tubes, which are evenly distributed on the circumference of the winding tube and assigned to the circumference of the spool mandrel. Such clamping tongues at the front end of the winding tube have the particular advantage that they can be formed directly in the front end. Thus, the fixing element and the winding tube form a one-piece component without additional connections.

In order to generate a uniform radial tensioning of the winding tube over the circumference of the spool mandrel, it is further provided that the axially protruding clamping tongues of the winding tube are ramp-shaped and can be clamped against the circumference of the spool spindle by a corresponding clamping cone. Radial tensioning of the winding tube is thus possible, essentially without axial biasing.

The clamping cone is advantageously formed at an opposite end of the winding tube, so that the adjacent tubes can be combined with a clamping cone and with clamping tongues within a tube stack.

In order to clamp a winding tube arranged at the free end of the bobbin mandrel, the clamping cone is arranged on a clamping ring on the circumference of the bobbin mandrel, which acts as a tensioning means for the winding tube at the free end of the bobbin mandrel. It is essential here to keep the winding sleeves radially braced within the sleeve stack via the clamping tongues and the clamping cone. For this purpose, the clamping ring is preferably held on the circumference of the spool dome via a switchable locking mechanism. Locking and releasing of the clamping ring on the circumference of the spool dome is thus possible in a simple manner.

Another alternative embodiment of the invention is given by the development ge, in which the fixing element is formed by a plurality of spaced apart clamping tongues at the end of the bobbin tube, which can be clamped by several ge opposite clamping lugs at the end of an adjacent bobbin tube. This results in a plurality of tensioning zones distributed around the circumference of the winding mandrel, which ensure a secure hold even when there are tolerance differences between the tensioning tongues and the clamping lugs.

The development is particularly advantageous in which a plurality of clamping tongues and a plurality of clamping lugs are formed offset relative to one another at both ends of the winding tube. The front ends of the bobbin tubes can be combined with one another as desired in order to obtain the self-generated radial tension in the event of an axial displacement.

Another advantage of the formation of a plurality of clamping tongues and clamping lugs alternately on the front ends of the winding tube is that the radial tension generated is held essentially even without axial pretensioning of the tube rod. Due to a self-locking between the clamping tongues and clamping lugs, the bobbin tubes remain clamped radially on the circumference of the bobbin mandrel even without an axial load

In order to fix the bobbin case at the free end of the bobbin mandrel, the tensioning means is formed according to an advantageous development of the invention by a cover unit with several adjustable clamping blocks, the clamping blocks being movable by an adjustment mechanism within the cover unit between an engaged clamping position and a disengaged relaxed position.

In order to obtain a secure hold of the winding tube, which is designed with several clamping tongues and several clamping lugs, at the tube stop of the spool mandrel, It is further provided that the sleeve stop is formed by a stop ring which has a plurality of clamping tongues and clamping lugs arranged offset to one another, which are designed equivalent to the clamping lugs and clamping tongues of the winding tube. This ensures that each winding tube is held at its front ends by a radial tension on the spool mandrel.

In order to enable the winding tube to be removed from the bobbin mandrels at the end of a winding journey in which the threads on the tubes were wound into bobbins, the development of the invention is provided in which the winding tube has a radially circumferential take-off groove on the circumference, which one is assigned to the front end. This means that automatic operating machines or doffers can be used to pull off the bobbin tubes with the bobbins.

In order for the bobbin tubes to take up a certain position when pushed onto the bobbin mandrel and to prevent the bobbin case from twisting, the further development of the invention is particularly advantageous in which the bobbin case has a plurality of axial grooves distributed on the inside diameter that interact with longitudinal webs on the circumference of the bobbin mandrel . In this way, a form-fitting connection between the winding tube and the bobbin mandrel is realized when it is pushed on.

The winding spindle according to the invention is therefore particularly suitable for receiving a large number of winding tubes with a long cantilevered winding mandrel which are designed to be self-tensioning by means of their fixing elements. Elaborate clamping devices are no longer required. The axial displacement to initiate the deformation only needs to be held at the end of the mandrel.

The invention is explained in more detail below using some exemplary embodiments of the winding spindle according to the invention with reference to the accompanying figures.

They represent:

Fig. 1.1

and Fig. 1.2 schematically a first embodiment of the winding spindle according to the invention in several views

Fig. 2 schematically shows a cross-sectional view of a winding tube according to the embodiment example according to FIGS. 1.1 and 1.2

Fig. 3.1

and

Fig. 3.2 schematically shows a further embodiment of the winding spindle according to the invention in several views

Fig. 4 schematically shows a cross-sectional view of a winding tube according to the Ausfüh approximately example according to FIGS. 3.1 and 3.2

Fig. 5.1

and

Fig. 5.2 schematically several views of a further embodiment of the spindle according to the invention he spool

Fig. 6 schematically shows a cross-sectional view of a winding tube according to the embodiment example according to FIGS. 5.1 and 5.2

1.1 and 1.2 show a first embodiment of the winding spindle according to the invention in several views. FIG. 1.1 shows a longitudinal view and FIG. 1.2 shows a partial view of the radially tensioned winding tubes. Insofar as no express reference is made to one of the figures, the following description applies to both figures.

In Fig. 1.1, a winding spindle 1 is shown schematically. Only the parts of the winding spindle 1 relevant to the invention are shown here. The winding spindle 1 has a long cantilevered bobbin mandrel 2 which is connected to a drive shaft not shown here. The reel mandrel 2 is tubular for this purpose and is rotatably mounted on a carrier not shown here.

The reel mandrel 2 has a sleeve stop 4 at one end. A plurality of winding tubes are held on the circumference of the bobbin mandrel 2, only the winding tubes 3.1 to 3.4 being shown in FIG. 1.1. Each of the winding tubes 3.1 to 3.4 are identical educated. Reference is also made to FIG. 2 to explain the winding tubes 3.1 to 3.4.

A cross-sectional view of one of the winding tubes 3.1 to 3.4 is shown schematically in FIG.

The winding tube according to FIG. 2 has a hollow cylindrical tube body 3. The sleeve body 3 has two opposite ends 6.1 and 6.2. A recess 8 is formed in each of the front ends 6.1 and 6.2. The recess 8 is limited in the interior of the sleeve body 3 by an inner diameter and an incision depth. An elastic, deformable fixing element 7 is arranged in each of the recess 8. The fixing element 7 is gebil det here by an elastic rubber ring 7.1. The rubber rings 7.1 arranged at the front ends 6.1 and 6.2 are dimensioned in their axial extent such that they protrude at the front end 6.1 and 6.2 of the sleeve body 3.

A radially circumferential take-off groove 19 is formed on the circumference of one of the front ends 6.2.

In Fig. 1.1 and 1.2, the winding tubes 3.1 to 3.4 are shown in a clamped to stand. For this purpose, the winding tubes 3.1 to 3.4 are successively attached to the Spu mandrel 2 and axially braced against each other. The rubber rings 7.1 present at the front ends 6.1 and 6.2 are compressed here. Due to the incompressibility of the rubber ring 7.1, a radially acting clamping force is generated between the bobbin sleeves 3.1-3.4 and the bobbin dome 2 with a simultaneous very high rigidity of the radial fixation.

For this purpose, a seam between two adjacent winding tubes 3.1 and 3.2 is shown schematically in a cross-sectional view in FIG. 1.2.

The winding sleeves 3.1 and 3.2 are joined together on a stop so that the opposing rubber rings 7.1 deform. In this case, a space formed by the recess 8 at the front end 6.1 and 6.2 is complete up to the circumference of the bobbin mandrel 2 filled with the rubber ring 7.1. Due to the size of the rubber ring 7.1 and the size of the recess 8, the effective clamping forces and the effective rigidity for fixing the winding sleeves 3.1 and 3.2 can be designed beforehand. A radial tensioning of the bobbin sleeves 3.1 to 3.4 on the circumference of the bobbin mandrel 2 is thus achieved.

As can be seen from the illustration in FIG. 1.1, a first winding tube 3.1 is axially displaced with its end 6.1 against the tube stop 4. In this respect, a deformation of the rubber ring 7.1 at the front end 6.1 of the winding tube 3.1 can be achieved by the sleeve stop 4.

At the opposite free end of the mandrel 2 of the last Spulhül se 3.4 a clamping means 5 is assigned. The clamping means 5 is executed in this game Ausführungsbei by a clamping ring 9. The clamping ring 9 can be held on the spool mandrel 2 by a screw connection or a clamp. It is essential here that the clamping ring 9 holds the Hülsensta pel formed by the winding sleeves 3.1 to 3.4 axially on a stop.

To remove the winding tubes 3.1 to 3.4, each of the winding tubes 3.1 to 3.4 has a pull-off groove 19 at the front end 6.2. The withdrawal groove 19 is designed to run radially around the circumference of the bobbin sleeves 3.1 to 3.4 and is suitable for being withdrawn from the bobbin mandrel 2 in an auxiliary device.

By designing the fixing element 7 as a rubber ring 7.1, the winding sleeves 3.1 to 3.4 can be reused after each use. Such bobbin tubes 3.1 to 3.4 can be used several times in order to be fixed to a bobbin mandrel and to accommodate bobbins.

In FIGS. 3.1 and 3.2, a further embodiment of the winding spindle according to the invention is shown in several views. Fig. 3.1 shows the winding spindle in a longitudinal sectional view and Fig. 3.2 schematically in a partial sectional view of two neigh barter winding tubes. The exemplary embodiment according to FIGS. 3.1 and 3.2 is essentially identical to the aforementioned exemplary embodiment, so that only the differences are explained at this point and otherwise reference is made to the aforementioned description.

In the embodiment shown in FIGS. 3.1 and 3.2, a plurality of winding tubes 3.1 to 3.4 are held on the circumference of the bobbin dome 2, the winding tubes 3.1 to 3.4 each having a plurality of clamping tongues 7.2 acting as fixing elements 7 at an end 6.2. To explain the winding tubes 3.1 to 3.4, reference is also made to FIG. 4 at this point.

In Fig. 4 one of the winding tubes 3.1 to 3.4 is shown schematically in a cross-sectional view. Since the winding tubes 3.1 to 3.4 are identical, the description applies to all winding tubes.

The winding tubes 3.1 to 3.4 each have a hollow cylindrical tube body 3. The sleeve body 3 has a fixing element in the form of a plurality of clamping tongues 7.2 at the front end 6.2. The clamping tongues 7.2 are assigned to the inner contour of the sleeve body 3. The clamping tongues 7.2 form a ramp in the axial direction, which is limited by a diameter step in the sleeve body 3. The clamping tongues 7.2 are formed elastically via an expansion joint 22 at the front end 6.2. The clamping tongues 7.2 thus form an incision in the outer contour of the sleeve body 3. Between the clamping tongues 7.2, a cutout 27 is formed in each case, which extends up to the Dehnfu 22.

At the opposite end 6.1, a clamping cone 10 is formed in the inner contour of the sleeve body 3. The clamping cone 10 is adapted to a pitch and diameter of the opposite clamping tongue 7.2 in such a way that an elastic deformation of the clamping tongues 7.2 occurs when several bobbin tubes are joined together. The clamping cone 10 is delimited inside by a diameter step 28 and preferably slotted in front.

As can be seen from the illustration in Fig. 3.1 and 3.2, the winding tubes 3.1 to 3.4 are axially joined together to form a tube stack, so that on the opposite the front ends 6.1 and 6.2 of two bobbin tubes, the clamping tongues 7.2 with a clamping cone 10 cooperates.

For this purpose, a cross-sectional view of a seam between two adjacent bobbin tubes 3.1 and 3.2 is shown in Fig. 3.2. The winding tubes 3.1 and 3.2 are preferably joined together with a defined stop between the end ends 6.1 and 6.2. Here, the clamping cone 10 at the front end 6.1 of the winding tube 3.2 interacts with the clamping tongues 7.2 at the front end 6.2 of the winding tube 3.1. The Spannzun conditions 7.2 are thereby pressed against the circumference of the mandrel 2. This creates a radial tension between the bobbin tubes 3.1 and 3.2 with the bobbin mandrel 2.

As can be seen from the illustration in FIG. 3.1, the sleeve stop 4 has a stop cone 23 on which the clamping cone 10 can be pushed. At the opposite free end of the reel mandrel 2, a clamping means 5 in the form of a clamping ring 12 on the circumference of the reel mandrel 2 is held. The clamping ring 12 has a clamping cone 12.1, which menworks with the clamping tongues 7.2 of the winding tube 3.4. In order to hold the clamping ring 12 in a position for fixing the axial displacement of the tube stack of the winding tubes 3.1 to 3.4, the clamping ring 12 cooperates with a locking mechanism 13. The locking mechanism 13 is formed here by way of example by a plurality of dowel pins 14, which tend to slide radially within the reel mandrel 2 are guided. In the interior of the bobbin mandrel 2, an adjusting means 15 is provided which can be moved back and forth on a projecting actuating end 24 by manual or automated operation. The Spannstif te 14 are guided over an adjusting ramp 25 of the adjusting means 15 between a locked position and an unlocked position.

To pull off the winding tubes 3.1 to 3.4, each of the winding tubes 3.1 to 3.4 has a withdrawal groove 19 on at least one of the end faces 6.2. The bobbins wound on the circumference of the bobbin tubes 3.1 to 3.4 can thus be withdrawn from the bobbin dome 2 by manual or automated operation of an auxiliary device. In FIGS. 5.1 and 5.2, a further exemplary embodiment of the device according to the invention is shown schematically in several views. In Fig. 5.1 a longitudinal sectional view and in Fig. 5.2 a partial view is shown schematically.

The exemplary embodiment according to FIGS. 5.1 and 5.2 also shows a winding spindle 1 which is essentially identical to the aforementioned exemplary embodiment. On the circumference of a bobbin mandrel 2 of the winding spindle 1, a plurality of bobbin sleeves 3.1 to 3.4 are braced radially to the bobbin dome 2 at their front ends 6.1 and 6.2 by elastically deformable fixing elements 7. For this purpose, the winding tubes 3.1 to 3.4 have a plurality of clamping tongues 7.3 acting as fixing elements 7 at their ends 6.1 and 6.2. In order to explain the winding tubes 3.1 to 3.4, reference is made to FIG. 6 at this point.

In Fig. 6, an embodiment of the winding tubes 3.1 to 3.4 is shown schematically in a cross-sectional view and side view. The winding tubes 3.1 to 3.4 are identical and each have a tube body 3. The sleeve body has at the front end 6.2 several axially outstanding clamping tongues 7.3, which are designed to be elastic and act as a fixing means 7 to build up radial tension. For this purpose, the clamping tongues 7.3 are facing the inner contour of the sleeve body and have a slightly conical shape towards the outside. The clamping tongues 7.3 are formed on the front end 6.2 distributed at a predefined distance from one another on the circumference. In the space between two adjacent clamping tongues 7.3, a respective clamping lug 11 is held at the front end 6.2. The clamping lugs 11 at the front end 6.2 have an inner contour that is matched to the clamping tongues 7.3 in order to generate a deformation of the clamping lugs 7.3 by the clamping lugs 11 when the opposite end faces are joined.

Due to the geometric shape of the clamping lugs 11 and the collets 7.3, the wall thickness, the length and the angle, the level of the clamping force can be created individually.

Thus, the opposite end 6.1 of the sleeve body 3 is also formed with a plurality of clamping tongues 7.3 and clamping lugs 11 alternately. The clamping lugs 11 and the clamping tongues 7.2 are arranged at the front ends 6.1 and 6.2 just if offset from one another in their angular position so that when several winding tubes are joined, one clamping tongue 7.3 cooperates with a clamping nose 11 of the opposite winding tube.

In the embodiment shown in FIGS. 5.1 and 5.2, the winding tubes 3.1 to 3.4 are joined together axially up to a stop. In this position, the clamping lugs 11 act on adjacent clamping tongues 7.3, so that each of the Spulhül sen 3.1 to 3.4 are held radially clamped on the circumference of the spool mandrel 2.

Such a situation of adjacent winding tubes 3.1 and 3.4 for triggering the self-clamping is shown schematically in FIG. 5.2. As can be seen from the illustration in Fig. 5.2, the clamping lug 11 acts on the front end 6.1 of the winding tube 3.2 with the underlying clamping tongue 7.3 at the front end 6.2 of the winding tube 3.2 men. Due to the conical shape of the clamping tongue 7.3, a deformation, in this case a bend, is produced on the clamping tongue 7.3 via the clamping nose 11, which leads to a radial bracing with respect to the circumference of the reel mandrel 2.

As can be seen from the illustration in Fig. 5.1, the sleeve stop 4 of the Spu mandrel 2, a stop ring 26 is arranged. The stop ring 26 has an equivalent design of clamping tongues 7.3 and clamping lugs 11 compared to a front end 6.1 or 6.2 of a first winding tube 3.1. The stop ring 26 could either be glued to the circumference of the spool mandrel 2 or held by a press fit.

For the radial tensioning of the winding tubes 3.1 to 3.4, the winding tubes 3.1 to 3.4 are pushed on one after the other axially up to the stop. Axial tensioning of the tube stack is not required here. The generated radial tension of the winding tubes 3.1 and 3.2 is stable after the winding tubes 3.1 to 3.4 have been pushed together. In this respect, the free end of the last winding tubes 3.4 is to be fixed radially by a clamping means 5.

As can be seen from the illustration in FIG. 5.1, a cover unit 16 is provided at the free end of the spindle 2. The cover unit 16 has several radially movable clamping blocks 17, which are used to clamp the clamping tongues 7.3 of the last winding tube 3.4. The terminal blocks 17 are coupled to the adjusting mechanism 18 ge. The adjustment mechanism 18 is actuated by actuating the cover unit 16 in the axial direction and by rotating the cover unit 16 in several functions. In the situation shown in FIG. 5.1, the cover unit 16 is in a tensioned state in which the clamping blocks 17 act on the clamping tongues 7.3 of the winding tube 3.4.

To relax the cover unit 16 axially out of the spool dome 2 ben shifted. In an extended position, the clamping blocks 17 relax and enter an inner position. Then the cover unit 16 is returned to the starting position by the adjustment mechanism 18. The terminal blocks 17 are immersed and the bobbin sleeves 3.1 to 3.4 can be pulled off the bobbin mandrel 2 through corresponding extraction grooves 19.

For tensioning, the cover unit 16 is pulled out again, the clamping blocks 17 moving outward through the adjusting mechanism 18, in order to then clamp the respective tensioning tongues 7.3 of the winding sleeves 3.4 when the cover unit 16 is withdrawn from the starting position. The actuation of the cover unit 16 can be carried out manually or by a doffer. The number of clamping stones 17 within the cover unit 16 depends on the number of clamping tongues 7.3 on the winding tubes. In this respect, the winding tube 3.4 can advantageously be clamped radially at the free end of the winding mandrel 2 by the clamping blocks 17 acting as clamping means 5.

In order to obtain a centered guidance of the winding tubes 3.1 to 3.4 on the circumference of the bobbin mandrel 2 and to avoid twisting of the winding tubes, each of the winding tubes 3.1 to 3.4 can have several axial grooves that penetrate the winding tube. An exemplary embodiment is shown in FIG. 6. A plurality of axial grooves 20 are formed on the inner contour of the sleeve body 3. The axial grooves 20 penetrate the sleeve body 3 completely from the front end 6.1 to the front end 6.2. Such axial grooves 20 correspond with longitudinal webs on the circumference of the coil dome 2.

For this purpose, the longitudinal webs could be formed so as to protrude on the circumference of the coil dome 2 be in order to accommodate the winding tubes 3.1 to 3.4 with corresponding axial grooves 20 can. In Fig. 5.1 a longitudinal web 21 is shown schematically.

The exemplary embodiments of the winding spindle according to the invention shown in FIGS. 1 to 6 show only a few structural possibilities for forming a fixation element at the end of a winding tube. It is essential here that the fixing element is designed to be elastically deformable in order to generate radial tension and that this deformation is generated by an axial displacement of the winding tube. For example, other structural shapes could also be possible when designing the fixing element as a rubber ring.

Claims

1. Winding spindle for winding several threads into bobbins with a cantilevered bobbin mandrel (2) for receiving several hollow cylindrical bobbin tubes (3.1 - 3.4), which bobbin tubes (3.1, 3.4) can be successively attached to the bobbin dome (2) and which are opposite a tube stop (4 ) are axially fixable on the circumference of the bobbin mandrel (2) by a clamping means (5), characterized in that each of the bobbin tubes (3.1-3.4) has a fixing element (7) on at least one end (6.1, 6.2) and that the fixing element (7) is designed to be elastically deformable on the circumference of the spool dome (2) for the purpose of radial tensioning of the spool tube (3.1-3.4).

2. Winding spindle according to claim 1, characterized in that the fixing element (7) is formed by a rubber ring (7.1) which is attached to the front end (6.1, 6.2) of the winding tube (3.1) in a recess (8).

3. winding spindle according to claim 2, characterized in that the winding tube (3.1) at both ends (6.1, 6.2) each has a rubber ring (7.1), which in egg NEM relieved state over the front ends (6.1, 6.2) of the winding tube ( 3.1) stands out.

4. Winding spindle according to claim 2 or 3, characterized in that the winding tubes (3.1-3.4) are of identical design, the clamping means (5) being formed by a clamping ring (9) on the circumference of the bobbin mandrel (2), which is the winding tube ( 3.4) is assigned to the free end of the coil dome (2).

5. Winding spindle according to claim 1, characterized in that the fixing element (7) is formed by several elastic clamping tongues (7.2) at the front end (6.1, 6.2) of the winding tube (3.1), which is distributed evenly on the circumference of the winding tube (3.1) and are assigned to the circumference of the coil dome (2).

6. winding spindle according to claim 5, characterized in that the axially protruding clamping tongues (7.2) of the winding tube (3.1) are ramp-shaped and can be tensioned against the circumference of the winding mandrel (2) by a corresponding clamping cone (10).

7. winding spindle according to claim 6, characterized in that the clamping cone (10) on an opposite end (6.1, 6.2) of the winding tube (3.1) is ausgebil det and / or on a clamping ring (12) on the circumference of the bobbin mandrel (2) is arranged, the clamping ring (12) acting as the clamping means (5) is assigned to the winding tube (3.4) at the free end of the winding mandrel (2).

8. winding spindle according to claim 7, characterized in that the clamping ring (12) is assigned a switchable locking mechanism (13) which is arranged at the free end of the bobbin mandrel (2).

9. winding spindle according to claim 1, characterized in that the fixing element (7) is formed by several clamping tongues (7.3) formed at a distance from one another at the front end (6.1, 6.2) of the winding sleeve (3.1), which are formed by several opposing clamping lugs ( 11) at the front end (6.1, 6.2) of an adjacent winding tube (3.2) can be tensioned.

10. Winding spindle according to claim 9, characterized in that a plurality of clamping tongues (7.3) and a plurality of clamping lugs (11) are formed offset from one another at both ends (6.1, 6.2) of the winding tube (3.1).

11. winding spindle according to claim 9 or 10, characterized in that the clamping means (5) is formed by a cover unit (16) arranged at the end of the bobbin mandrel (2) with a plurality of adjustable terminal blocks (17), the terminal blocks (17) can be moved by an adjusting mechanism (18) between an engaged clamping position and a disengaged relaxed position.

12. Winding spindle according to one of claims 9 to 11, characterized in that the sleeve stop (4) is formed by a stop ring (26) which has several offset from one another arranged clamping tongues (7.3) and clamping lugs (11), which are equivalent to the clamping lugs (11) and clamping tongues (7.3) of the winding tube (3.1).

13. Winding spindle according to one of the preceding claims, characterized in that the winding tube (3.1) has a radially circumferential take-off groove (17) on the circumference, which is assigned to one of the front ends (6.1, 6.2).

14. Winding spindle according to one of the preceding claims, characterized in that the winding tube (3.1) has a plurality of Axialnu th distributed on the inner diameter (20) which interact with longitudinal webs (21) on the circumference of the spool mandrel (2).