EP3431428A1 - Method and device for winding a spinning thread, in particular a glass yarn in order to form a bobbin - Google Patents

Abstract

For winding a spun yarn (4), in particular a glass thread on a winding tube (9.1), which is arranged on a winding spindle (8.1), a method is proposed in which the spun yarn (4) fed to the winding tube (9.1), which by means of the driven winding spindle (8.1) is rotated. During the winding and / or winding of a coil (15) whose winding width (B) in an axial direction is smaller than a length of the winding tube (9.1), a traversing movement with at least one flyer blade (13.1, 13.2) on a rotatably driven flyer axis ( 11). The traversing movement with a predetermined position of the spun yarn (4) on the non-rotating flyer wings (13.1, 13.2) finished. There is an axial relative movement between the flyer axis (11) and winding spindle (8.1, 8.2) performed and the spun yarn (4) on the winding tube (9.1, 9.2) next to the winding width (B) of the coil (15) wound into a thread reserve (16) ,

Description

The object of the invention relates to a method and to an apparatus for winding a spun yarn, in particular a glass thread to a coil.

Although both the method and the apparatus are explained below in connection with glass thread (glass thread), neither the method nor the device is limited to the winding of a glass thread. The method and the device are suitable for winding a spun yarn, in particular a spun yarn of plastic, glass, stone (basalt) or carbon. A spun yarn is understood to be a multifilament consisting of a plurality of monofilaments.

Methods and devices for the production of glass fibers in particular are known. After a process procedure for producing a glass thread, glass filaments are drawn from a molten glass. The filaments are bundled and wound.

The surface speed of the forming coil determines the so-called titre, the wound up glass thread. Usually, the glass thread before it is wound up to the coil, passes through a preparation device.

Through the publication US 5,669,564 For example, a method and an apparatus for winding a spun yarn into a spool are known. The device has a winding tube which is arranged on a winding spindle. The winding spindle is connected to a rotary drive. Furthermore a traversing device is provided with a plurality of flyer wings, which are held on a drivable flyer axis.

In order to obtain certain coil shapes, US Pat. No. 5,669,654 discloses that the traversing movement is subdivided into a plurality of partial movements. Thus, the flyer wings perform a first traversing movement and the flyer axis, on which the flyer wings are arranged, a second traversing movement. A third traversing movement is effected by the winding spindle.

Also by the publication US 7,866,590 is a device for winding a spun yarn to a coil known. This device has a traversing device, by means of which the filament during the winding process, the filament is displaced back and forth in the axial direction of the winding spindle.

When the bobbin has reached a certain outer diameter, the winding operation of the bobbin is stopped and a new winding operation is started on an empty bobbin. The coils thus obtained are fed to subsequent processing operations. For this purpose, it is necessary that the spun yarn, in particular the glass thread is unwound from the spool. In order to allow unwinding of the glass thread, it is necessary that the free end of the glass thread is found. This is particularly problematic for very fine filaments.

Through the publication US 4,025,002 It is already known to wind a thread reserve adjacent to the spool. The thread reserve can be wound before winding the actual coil or after winding the coil. It is provided a traversing device with two flyer wings, which are arranged on a driven flyer axis. During a winding process to form a coil of the spun yarn, at which is a glass thread, moved by the rotation of the flyer axis between the two flyer wings. In addition, the winding spindle is moved back and forth in the axial direction of the winding spindle. To form a thread reserve following the winding process, the spun yarn is lifted out of the area between the flyer wings by means of a transfer element, which is arranged on the flyer axis, and transferred to a guide element arranged on the flyer axis. For this process, the flyer axis is rotated in a direction of rotation of the flyer axis during the winding opposite sense of rotation and then stopped.

Proceeding from this, the present invention, the objective underlying a method and apparatus for winding a spun yarn, in particular a glass thread to specify a coil with a thread reserve, which or which can be realized with less technical effort.

This object is achieved by a method for winding a glass thread on a winding tube with the features of claim 1 or by a device for winding a glass thread to a coil with the features of claim 8. Advantageous embodiments and further developments of the method and the device are the subject of the respective dependent claims.

The steps or features listed individually in the dependent claims can be combined with one another in any technologically meaningful manner and define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

According to the inventive method for winding a spun yarn, in particular a glass thread on a winding tube, which is arranged on the winding spindle, it is proposed that a spun yarn is guided to the winding tube, which is rotated by means of the winding spindle. During a winding operation, a traversing movement is performed by at least one flyer blade or preferably a plurality of offset flyer wings on a rotatably driven flyer axis for winding and winding a coil. A winding width of the coil in the axial direction is less than a length of the winding tube. Already before the winding of the coil or after the coil is constructed, a winding of the spun yarn is produced on the sleeve next to the winding width of the spool to a thread reserve. For this purpose, the traversing movement is terminated. The spun yarn is brought to the flyer wings in a predetermined position and finished the rotation of the flyer axis. The non-rotating - non-rotating - flyer axis and the Spulspulspindel be moved by a relative movement between the flyer axis and the winding spindle in an axial direction, that the spun yarn is brought into contact with the winding tube next to the winding width of the spool to form a thread reserve.

By this method according to the invention is located on the winding tube, the spool as such and a thread reserve, wherein the spun yarn passes from the thread reserve to the spool or from the spool to the thread reserve. This makes it possible to separate the beginning of the spun yarn or the end of the spun yarn of a spool from the spool in order to deduct the spool from the inside or from the outside during further treatment.

The inventive method has numerous advantages, in particular a simplified guidance of the spun yarn is achieved. The technical Effort is considerably reduced. Unlike the one by the US 4,025,002 known process guidance requires no additional components on the flyer axis, which cause a positioning of the spun yarn next to the coil.

During the formation of the thread reserve advantageously takes place an axial relative movement between the flyer axis and the winding spindle. In this case, both the flyer axis and the winding spindle can be moved in the axial direction. There is also the possibility that only the flyer axis or the winding spindle is moved in an axial direction. Advantageously, the axial position of the winding spindle at least at the end of the winding process of the thread reserve a position from the out after formation of the thread reserve, for example, for an external trigger with a bobbin change can be started.

The inventive method also allows a change in the order of the method steps. Thus, the relative movement between the winding spindle and the flyer axis can be carried out to a translational positioning of the thread even with still rotating flyer wings. The termination of the traversing movement and the associated rotational positioning of the thread on the non-rotating flyer wings then takes place immediately after the implementation of the relative movement.

A coil wound by the method according to the invention has numerous advantages, in particular a finding of a free end of the filament is substantially facilitated, which is particularly advantageous in glass fibers. For this purpose, for example, the thread reserve be stripped off from the winding tube, the free beginning of the coil or the free end of the coil is released. The finding of a free end of the spun yarn of a coil is thereby considerably simplified. Locating the free end of the spun yarn is made possible without windings of the spool get injured. A free end of the glass thread can be found here, without the quality of the coil is impaired. In addition, the amount of waste can be significantly reduced.

The thread reserve can also be cut to find the free end of the spun yarn. However, there is no damage to the coil, since not at the coil, as is the case in the prior art, is cut, but at the thread reserve.

According to an advantageous idea it is proposed that for applications in which the thread reserve is not separated as waste in the further processing, the peripheral speed during the winding of the thread reserve substantially corresponds to the peripheral speed of the spool during the winding process. This ensures that the spun yarn of the yarn reserve has an approximately the same titer as the spun yarn of the spool.

A substantially constant peripheral speed of the spool during winding of the thread reserve also has the advantage that the control effort is significantly reduced.

Preferred is an embodiment of the method in which the speed of the spool during the winding process and the winding of the thread reserve is substantially constant. Thus, for example, very uniform glass filaments can be wound into coils, in particular in terms of titer and physical properties.

According to yet another advantageous embodiment of the method is proposed that the traversing movement of the spun yarn by a relative movement of the winding spindle and the rotating flyer wings he follows. Thus, the spun yarn can be fed from a fixed position and safely lead within a specified by the flyer swing swing stroke. The entire winding width of the coil is wound by the relative movement between the flyer axis and winding spindle. In this case, an embodiment is preferred in which, during the traversing movement of the spun yarn, it is moved between two reversal points defined by the flyer vanes.

The traversing movement can, for example, be achieved in that the traversing movement takes place completely through the winding spindle or completely through the traversing device. However, it is also possible that the traversing movement takes place by partial movements of the winding spindle and the traversing device. Thus, for example, the flyer wings move the filament between two defined reversal points, wherein the distance of the reversal points in the axial direction of the winding tube is smaller than the winding width of the coil. The further traversing movement is achieved by an axial displacement of the winding spindle, wherein the axial displacement of the winding spindle is dimensioned so that the winding width of the coil, which is desired, is achieved by the entirety of the traversing movement.

According to yet another advantageous embodiment of the method is proposed that is brought to wrap the thread reserve of the spun yarn to a reversal point of the flyer wings. In this case, preference is given to a method in which the spun yarn remains essentially at the point of reversal of the flyer vane during the winding of the thread reserve. As a result, no traversing movement is carried out in connection with the formation of the thread reserve. This is advantageous, but not mandatory. Depending on, for example, the flyer blade geometry, a transfer point on the flyer blade of the spun yarn to form a thread reserve does not necessarily coincide with the reversal point. It is also possible to perform a traversing movement during the winding of the thread reserve. This can be achieved, for example, in that the winding spindle performs an axial reciprocating movement to a predetermined extent, which is smaller than, for example, during the winding of the spun yarn into a spool.

According to a still further advantageous embodiment of the method, it is proposed that the position of the substantially non-rotating flyer axis and / or at least one flyer wing be sensed. Depending on a position of the flyer axis and / or the at least one flyer wing before a beginning of the formation of a thread reserve, the flyer axis is rotated so far that the desired position of at least one flyer wing is achieved for the formation of the thread reserve. Thus, the spun yarn can be held in the predetermined position on the flyer wing.

According to a further inventive idea, an apparatus for winding a spun yarn, in particular a glass thread to a coil with a winding tube, which is arranged on a winding spindle, proposed. The winding spindle is connected to a rotary drive. As a result, a rotational movement of the winding spindle and thus also arranged on the winding spindle winding tube is achieved. For winding or winding a coil whose winding width is smaller than the length of the winding tube in an axial direction, a traversing device for carrying out a traversing movement is provided. The traversing device comprises a rotatable flyer axis with at least one flyer wing.

The inventive device is characterized in particular by the fact that a positioning unit is provided to the traversing movement with a predetermined position of the spun yarn on the non-rotating To finish flyer wings and to perform an axial relative movement between the flyer axis and the winding spindle.

A particularly structurally advantageous embodiment of the device can be seen in that the positioning unit interacts with the traversing device. In this case, the number of components of the device for winding a spun yarn to a coil can be reduced.

Preferred is an embodiment of the device in which the rotatable flyer axis has two spaced apart flyer wings. Here, each of the flyer wings from a deformed guide bracket to guide the spun yarn slidably on the guide bracket. Flyer wings on rotating axles are known per se. The guide bow of the flyer wings represent a particular wire-shaped structure on which slides along the spider during movement of the flyer wings. An embodiment of such a flyer wing is known, for example, from the aforementioned US Pat. No. 5,669,564. The flyer axis, on which the flyer wings are arranged, is coupled to a rotary drive, so that the flyer wings on the rotatable flyer axis perform a partial stroke of the traversing movement. Alternatively, the stroke can also be realized by a displaceable trained flyer axis.

In this case, the flyer wings form two opposing reversal points of the traversing movement of the filament, so that the filament is reciprocated by the flyer wings between the reversal points.

It is particularly advantageous if the positioning unit has a sensor which is associated with the flyer axis for detecting an angular position of the flyer axis and / or the flyer wings. Thus, the flyer axis in Stop a certain angular position of the flyer wings to position the glass thread by an axial displacement of the flyer axis next to the coil.

In order to position the spun yarn next to the winding area of the spool, the positioning has a thrust drive acting on the flyer axis. This allows the filament safely lead out of the winding area of the coil. Here, the thread reserve can be wound as required on the left sleeve end or on a right sleeve end.

To complete the movement of the traversing device, it is proposed that the winding spindle be displaceable in its axial direction. By a displacement of the winding spindle in the axial direction, the traversing movement of the spun yarn can be performed over a larger stroke, so that the winding spindle is preferably designed to be axially displaceable. In this way, in particular, it is achieved that the filament can be fed from a stationary position without major deflections. This allows even very delicate glass threads are produced with uniform quality and wound into coils.

Fig. 1:

schematisch ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zur Herstellung von Glasfäden,

Fig. 2a, 2b

Momentaufnahmen während des Aufwickelvorgangs, und

Fig. 3:

das Ausführungsbeispiel in einer Momentaufnahme während des Wickelns einer Fadenreserve am Ende einer Spulenwicklung

Fig. 4:

das Ausführungsbeispiel in einer Momentaufnahme während des Wickelns einer Fadenreserve zu Beginn einer Spulenwicklung

Further advantages and details of the method according to the invention and the device according to the invention will be explained with reference to the embodiment shown in the drawing. This is a preferred embodiment, to which the subject matter of the invention is not limited. Show it:

Fig. 1:

schematically an embodiment of the device according to the invention for the production of glass threads,

Fig. 2a, 2b

Snapshots during the winding process, and

3:

the embodiment in a snapshot during the winding of a thread reserve at the end of a coil winding

4:

the embodiment in a snapshot during the winding of a thread reserve at the beginning of a coil winding

In the Fig. 1 schematically a device for producing endless glass fibers (glass fibers) is shown. Glass threads today find a wide range of applications. For example, glass fibers are used in the field of medical technology and telecommunications. In addition, glass threads are needed in the field of technical textiles.

The production of endless glass fibers takes place after the nozzle drawing process. A glass melt is pulled over nozzles. The glass filaments emerging from the nozzles can be bundled into glass threads. The glass thread is wound up into a spool. The speed with which the glass thread is wound into a coil influences the thickness of the individual filaments and thus also the titer of the glass thread. A glass thread can have a titer range between 2.5 TEX and 204 TEX with single filament diameters of 3 to 13 μm. It is common for a sizing to be applied to the glass filament when making continuous glass filaments. In this way, the further processing of the fibers is to be made possible or facilitated. The size represents a surface coating which serves to protect the glass thread.

The treatment of the filaments below the nozzles, in particular the sizing and the possible bundling of the filaments into threads and the winding up of the individual threads depend on the later processing purpose.

In the Fig. 1 It is shown that in a crucible 1, a glass melt is provided. Possibly. 1 crucible furnaces are upstream of the crucible. The crucible 1 has, for example, an additional heating, which is not shown, in order to keep the molten glass at a constant temperature.

The molten glass passes out through nozzles 2 in the form of glass filaments 3.

The filaments 3 can be bundled into a glass thread 4. Before a bundling of the filaments 3 takes place, for example, a size is applied to the glass filaments 3 by means of the application unit 5.

The glass thread is wound by means of a device 6 for winding the glass thread 4 into a coil. The in the Fig. 1 schematically illustrated device for winding a glass thread has a rotatably mounted turntable 7. On the turntable 7 two projecting winding spindles 8.1, 8.2 are arranged on one side. The winding spindles 8.1, 8.2 are offset by 180 ° to each other on the turntable 7 held.

Each winding spindle 8.1, 8.2 preferably has a spindle drive, so that the winding spindles 8.1, 8.2 can be driven individually. Each winding spindle 8.1, 8.2 has a chuck. On the chuck one or more winding tube 9.1, 9.2 is held to receive the windings of a coil. Thus, the winding spindles 8.1 and 8.2 can tension a plurality of winding tubes one behind the other through the chuck, so that at the winding spindles in each case several glass threads can be wound simultaneously to form coils. In the illustrated embodiment in each case two of the winding tubes 9.1 and 9.2 are held on each of the winding spindles ( Fig. 2a ).

The turntable 7 is coupled to a drive unit, not shown. The turntable 7 can be driven by activating a turntable drive, so that the turntable 7 performs a rotary movement, for example. Counterclockwise. As a result, after the completion of a winding operation, a transition of the full winding tube from the winding area to a change area is achieved. The empty winding tube comes here, in the Aufspulbereich and it follows a new winding process.

Not shown in the schematic representation Fig. 1 other units of the device for winding a glass thread. This may, for example, be a device for automatic doffing. Likewise not shown is a corresponding control, which has the device for winding a glass thread.

During the winding process of the glass thread, a traversing movement is performed to form the coil. This is schematically in the Fig. 1 a traversing device 10 is provided.

In the embodiment shown preferred, the traversing device 10 comprises a rotatable flyer axis 11, as shown in the Fig. 2a and 2 B is apparent. The rotatable flyer axis 11 is driven by a rotary drive 12.

On the flyer axis 11 so-called flyer wings 13.1 and 13.2 are arranged. The flyer wings 13.1 and 13.2 each have a shaped guide bracket which, as a wire-like structure, guides the glass thread 4 along. The guide bracket of the flyer wings 13.1 and 13.2 can be held directly on the flyer axle 11. It is also possible to hold the guide bracket on wing carrier on the flyer axis 11. The guide bracket can be made of brass or special plastic.

Due to the high speed and the friction between a flyer blade and a glass thread resulting heat in the area of the flyer wings means 14 is provided by means of which a fluid is brought into the contact area between the glass thread and flyer wings. The fluid should on the one hand have a cooling effect. On the other hand, the coefficient of friction between the glass thread and the flyer wing should be reduced by means of the fluid. This can be avoided in particular filament breaks on the glass thread. As the fluid, a water is preferably sprayed on the contact surfaces of the flyer wings 13.1 and 13.2.

Like from the Fig. 2a it can be seen, lies a flyer wing 13.1 in an imaginary plane, which is inclined relative to the longitudinal axis of the flyer axis 11. From the illustration to Fig. 2a it can be seen that, for example, the flyer wing 13.1 is tilted to the left. By turning the flyer axis 11 takes the flyer wing 13.1 in the Fig. 2b shown position. With regard to the glass thread 4, the flyer wings 13.1 and 13.2 each form two defined reversal points, between which the glass thread 4 can be moved back and forth on rotation of the flyer axis 11. The distance between the two reversal points or the path traveled by the glass thread 4 by the movement of the flyer wing 13.1, is smaller than a winding width B of a coil 15. The caused by a flyer wings 13.1, 13.2 change in position of the glass thread is part of a traversing movement represents.

The winding spindle 8.1 and 8.2 each have a well-known chuck, by means of which the winding tubes 9.1 and 9.2 are held on the circumference of the winding spindle. The chuck has, for example, clamping lamellae on, which are not shown to hold the winding tube 9.1, 9.2 stationary with respect to the winding spindle.

In the Fig. 2a and 2 B only the winding spindle 8.1 held in the winding area is shown. The winding spindle 8.1 with the winding tubes 9.1 is on the turntable 7 in the axial direction back and forth. For this purpose, a spindle thrust drive 20 is provided on a drive side of the turntable 7, through which the winding spindle 8.1 is moved back and forth on the turntable 7. This displacement movement of the winding spindle 8.1 and thus also the resulting coils 15 is another part of a traversing movement, so that the traversing of the glass thread 4 is achieved by the flyer wings 13.1 and 13.2 and the reciprocating motion of the winding spindle 8.1. The glass thread 4 can thus be placed over the entire winding width B of the coil 15. The winding spindle 8.1 rotates by a spindle drive 18th

From the Fig. 2a it can be seen that in the position of the glass thread 4 shown there in the region of the left edge of a coil 15 is guided. The Fig. 2a shows an end position of the glass thread 4, the Fig. 2b shows the other end position of the glass thread 4 with respect to a coil 15. In the Fig. 2b takes the winding spindle an end position, which is also for the construction and the subsequent winding of the glass thread 4 on the sleeve next to the coil 15 to a thread reserve 16 of importance. In the illustrated end position of the glass thread 4 passes through the reversal points of the flyer wing 13.1 and the flyer wing 13.2.

In order to achieve a constant titer during the winding process, the rotational speed of the winding spindle 8.1 is varied as a function of the diameter of the coil 15, so as to obtain a constant surface speed of the coil 15. The glass thread 4 is wound at a constant winding speed to the spool 15.

According to this embodiment Fig. 2a and 2 B two glass fibers 4 are simultaneously wound on the winding spindle 8.1 to coil 15. Thus, the traversing device 10 a plurality of flyer wings 13.1, 13.2, which are formed axially offset according to a pitch of the winding units on the flyer axis 11. The pairs of wings are driven together by the flyer axis to wind the glass fibers 4 parallel to coils 15. The coil 15 is wound until a predetermined coil diameter or a glass fiber length is reached.

At the end of the coil winding of the glass thread 4 is wound next to the coil 15 on the circumference of the winding tube 9.1 to a thread reserve 16, as in Figure 3 shown. In order to be able to wind the thread reserve 16, a positioning unit 21 is provided. The positioning unit 21 has a sensor 17 which is associated with the flyer axis 11. By the sensor 17 an angular position of the flyer axis 11 and thus a position of the flyer wings 13.1 and 13.2 is monitored. In addition, the positioning unit 21 is assigned a thrust drive 19, which is coupled to the flyer axle 11 for axial displacement of the flyer axle 11.

The function of the positioning unit 21 and the interaction with the traversing device 10 will now be described with reference to FIG Fig. 3 explained below at a winding unit, wherein the winding of the thread reserve 16 is performed synchronously at the winding units. In order to wind a thread reserve 16 on the sleeve 9.1 next to the winding width B of the spool 15, the iridescent movement of the winding spindle 8.1 is first terminated with the coils 15. The winding spindle 8.1 is in an end position of the traversing movement, as in the Fig. 3 is shown brought. The rotation of the winding spindle 8.1 and thus also the coil 15 and the winding tube 9.1 is substantially unchanged.

The rotation of the flyer axis 11 with the iridescent flyers wings 13, 1, 13.2 is terminated with a predetermined angular position of the flyer wings 13.1 and 13.2. For this purpose, the desired angular position for positioning the glass thread 4 on the non-rotating flyer wings 13.1 or 13.2 is detected by the sensor 17 of the positioning unit 21. As soon as the flyer axis 11 has reached the predetermined angular position, the rotary drive 12 of the flyer axis 11 is stopped. The glass thread 4 is in the intended position on the non-rotating flyer wings 13.1, 13.2. The flyer wing 13.1 or 13.2 in this case assumes a position in which the glass thread 4 is guided in a reversal point of the flyer wing 13.1 or 13.2. This gives the glass thread 4 on the flyer wings 13.1 and 13.2 a stable in the axial direction guidance. Have the flyer wings 13.1 and 13.2 taken the predetermined position, the thrust actuator 19 is activated and the flyer axis 11 with the flyer wings 13.1 and 13.2 moved in the axial direction, so that the glass thread 4 in addition to the winding width of the coil 15, as in the in the Fig. 3 shown embodiment, is performed.

In the embodiment of the Fig. 2a . 2 B and 3 are simultaneously wound on the winding spindle 8.1 two glass fibers 4, wherein the flyer axis 11 carries two spaced-apart pairs of wings. The above description refers to each of the winding positions and is independent of the number of winding locations. The glass thread 4, which belongs to the inner coil 15, is thus deflected between the two coils 15. The glass thread 4 is wound into a thread reserve 16 on the circumference of the winding tube 9.1. After the thread reserve 16 has been wound, the glass threads 4 are transferred to the new winding spindle 8.2 for winding a new bobbin on the winding tubes 9.2. The positioning unit 21 or the traversing device 10 is set in its starting position. At this point, it should be mentioned that the positioning unit could alternatively also cooperate with the spindle thrust drive of the winding spindles in order to carry out the axial displacement between the traversing unit and the spool after winding up the spool. This is in Fig. 4 another embodiment of the invention exemplified.

The representation in Fig. 4 is essentially identical to the representation in Fig. 3 , so that at this point only the differences will be explained and otherwise reference is made to the above description.

At the in Fig. 4 schematically illustrated embodiment of the device according to the invention, the positioning unit 21 cooperates with the spindle thrust drive 20, which is coupled to the axial displacement with the winding spindle 8.1. Thus, a translational positioning of the glass thread 4 for winding the thread reserve can be performed by a displacement of the winding spindle 8.1.

For a rotational positioning of the flyer axis 11, the positioning unit 21 is coupled to a sensor 17 and the rotary drive 12. Thus, the traversing movement can be purposefully terminated with the predetermined axially determined position of the glass thread 4 on the non-rotating flyer wings 13.1 and 13.2. In addition, there is also the possibility that the positioning unit 21 cooperates with a thrust drive 19 to move the flyer axis 11 axially. Alternatively, the translational positioning of the glass thread in a region outside the winding width B of a coil by a combination of the displacements of the winding spindle 8.1 and the flyer axis 11 done. In addition, it is possible to wind the winding of a thread reserve 16 with an iridescent glass thread 4.

In contrast to the embodiment according to Figure 3 in which the thread reserve 16 is wound at the end of a winding cycle takes place in the in Fig. 4 shown embodiment, the winding of a thread reserve 16 at the beginning of a winding cycle. Immediately after catching or wrapping the glass thread 4 on the winding tube 9.1, the traversing movement of the flyer wings 13.1 and 13.2 is completed in a predetermined angular position. The glass thread 4 is guided in one of the reversal points of the non-rotating flyer wings 13.1 and 13. 2. Now, a relative movement between the flyer axis 11 and the winding spindle 8.1 is initiated by the positioning unit 21 to position the glass thread 4 next to the actual winding area B of the coil to be wound. In this case, the relative movement can be carried out by a displacement of the winding spindle 8.1 or by a displacement of the flyer axis 11 or by displacements of the winding spindle 8.1 and the flyer axis 11. Once the glass yarn 4 is guided outside the winding area B, the thread reserve is placed on the circumference of the winding tube 9.1.

In the embodiments according to Fig. 3 and Fig. 4 the thread reserves 16 are wound on a right side of the spool 15. In principle, it is also possible to wind the thread reserve 16 on a left side of the coil 15. Thus, it is also possible to deposit a thread start of the bobbin in front of the bobbin winding on one side of the winding region and a yarn end of the bobbin after the bobbin is wound on an opposite side of the winding region in each case as a thread reserve.

LIST OF REFERENCE NUMBERS

1

crucible

2

jet

3

filament

4

spin thread

4a; 4b

glass thread

5

applicator

6

device

7

turntable

8.1, 82

winding spindle

9.1, 9.2

winding tube

10

Traversing device

11

Flyers axis

12

drive

13.1; 13.2

Flyers wing

14

cooling device

15

Kitchen sink

16

thread reserve

17

sensor

18

rotary drive

19

linear actuator

20

Spindle linear actuator

21

positioning

Claims (13)

Method for winding a spun thread (4), in particular a glass thread on a winding tube (9.1, 9.2), which is arranged on a winding spindle (8.1, 8.2) with the following steps: Feeding the spun yarn (4) to the winding tube (9.1, 9.2), which is rotated by means of the driven winding spindle (8.1, 8.2), Performing a traversing movement with at least one flyer blade (13.1, 13.2) on a rotatably driven flyer axle (11) during winding and / or winding a coil (15) whose winding width (B) in an axial direction is smaller than a length of the winding tube (9.1, 9.2), Termination of the traversing movement with a predetermined position of the spun yarn (4) on the non-rotating flyer vane (13.1, 13.2), Carrying out an axial relative movement between the flyer axis (11) and the winding spindle (8.1, 8.2) and • winding the spun yarn (4) on the winding tube (9.1, 9.2) next to the winding width (B) of the spool (15) to a thread reserve (16). The method of claim 1, wherein during the winding of the thread reserve (16), the peripheral speed of the spool (15) substantially corresponds to the peripheral speed of the spool (15) during the winding operation. The method of claim 2, wherein the peripheral speed of the spool (15) is substantially constant during the winding of the thread reserve. The method of claim 1, 2 or 3, wherein during the traversing movement of the spun yarn (4) between two by the flyer wings (13.1, 13.2) defined reversal points is moved. Method according to one of claims 1 to 4, wherein for winding the thread reserve (16) of the spun yarn (4) in a reversal point of the flyer wings (13.1, 13.2) is brought. The method of claim 5, wherein the spun yarn (4) during the winding of the thread reserve (16) substantially at the reversal flyer vane (13.1, 13.2) remains. Method according to one of claims 1 to 6, wherein the position of the substantially rotationless flyer axis (11) and / or at least one flyer wing (13.1, 13.2) is detected by sensors. Apparatus for winding a spun yarn (4), in particular a glass thread, into a spool (15) A winding tube (9.1, 9.2) held on a winding spindle (8.1, 8.2), A spindle drive (18) connected to the winding spindle (8.1, 8.2), • a traversing device (10) comprising a rotatable flyer axis (11) with at least one flyer wing (13.1; 13.2) for performing a traversing movement during winding and / or winding a coil (15) whose winding width (B) in an axial direction is smaller than a length of the winding tube (9.1, 9.2)), and with • A positioning unit (21) for terminating the traversing movement with a predetermined position of the spun yarn (4) on the non-rotating flyer wing (13.1, 13.2) and for performing an axial relative movement between the flyer axis (11) and winding spindle (8.1, 8.2). Apparatus according to claim 8, wherein the flyer axle (11) has two flyer wings (13.1; 13.2) distributed on the circumference. Apparatus according to claim 9, wherein the flyer wings (13.1; 13.2) each form two oppositely disposed reversal points for carrying out a traversing movement of the spun yarn (4). Device according to one of claims 8 to 10, wherein the positioning unit (21) has a sensor (17) associated with the flyer axis (11) for detecting an angular position of the flyer axis (11) and / or the at least one flyer wing (13.1; 13.2) is. Device according to one of claims 8 to 11, wherein the positioning unit (21) has at least one thrust drive (19) through which the flyer axis (11) in the axial direction of the flyer axis (11) is displaceable. Device according to one of claims 8 to 12, wherein the winding spindle (8.1; 8.2) is displaceable back and forth in the axial direction of the winding spindle (8.1; 8.2) by a spindle push drive (20).

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