WO2003099695A1

WO2003099695A1 - Method and bobbin winding machine for winding a continuously fed thread onto a tube in order to form a bobbin

Info

Publication number: WO2003099695A1
Application number: PCT/EP2003/004797
Authority: WO
Inventors: Jürgen Rom; Helmut Rabe
Original assignee: Georg Sahm Gmbh & Co. Kg
Priority date: 2002-05-27
Filing date: 2003-05-07
Publication date: 2003-12-04
Also published as: EP1507730B2; DE50306510D1; ATE353846T1; EP1507730A1; ES2279948T5; EP1507730B1; JP2005527448A; CN1326761C; JP4789465B2; DE10223484A1; DE10223484B4; CN1656003A; DK1507730T3; ES2279948T3

Abstract

The invention relates to a method for winding a continuously fed thread (3) onto a tube (9) in order to form a bobbin (10). According to the invention, the tube is fixed on a driveable bobbin spindle (7) and the thread (3) can be wound onto the tube (9) and the bobbin (10) via a fixed top thread guide (2), a cross-winding device (11) which is provided with a transversing thread guide (15) and is driven especially back and forth and a contact roller (19) forming a fixing winding (20) and the bobbin (10). A spatial position of the transversing thread guide (15) of the cross-winding device (11) is detected and stored and used as a reference position during the formation of the fixing winding (20) and the bobbin (10). The spatial positions of the transversing thread guide (15) of the cross-winding device (11) are determined during the displacement of the bobbin and adapted to the speed of the bobbin.

Description

Method and winding machine for winding a continuous thread on a sleeve to a coil

The invention relates to a method and a winding machine for winding a continuously tapered thread on a sleeve to form a coil, having the features specified in the preambles of the independent claims. In the method for winding a continuously tapered thread to form a bobbin, it is important to wind the thread on each sleeve to form a fixing winding, if necessary. A reserve winding, and ultimately the coil as gently as possible.

A fixing winding is understood to mean a bead-like winding of the thread on the sleeve, in which the thread layers overlap one another in a narrow axial region of the sleeve, either at a distance from the coil, ie outside the laying width, or in the region of the coil or laying width be wound to fix the beginning of the thread on the sleeve. A reserve winding is understood to be a winding of the thread on the sleeve, which bridges the distance between a fixing winding arranged outside the coil width and the coil and in which the thread is wound in a thread-like manner onto the sleeve. When the fixing winding is positioned within the coil width, there is no reserve winding.

With regard to the device, it is a matter of a continuous winder with at least two each driven winding spindles, on the sleeves of the thread is wound alternately. In the change position, the thread is severed so that the end of the preceding thread thus formed is still wound on the circumference of the full bobbin, while the thus formed new beginning of the thread is detected by a capture area of the empty shell and anchored there, and then the winding takes place on this new sleeve. The severing of the thread can be done in any manner, for example by tearing due to increased thread tension or with a cutting device. The invention is also independent of the manner of forming the capture area. The capture area can be realized on the respective sleeve, for example within the coil width, but often outside the coil width. The catching area can be made, for example, as one or more incisions arranged distributed over the circumference of the sleeve, or else by arranging a hooked strip strip or the like. The catching area can also be realized on a catching device, which is part of the winding spindle and thus independent of the sleeve.

A method and a winding machine of the type described is known from DE 197 43 278 C2. The continuously tapered thread is wound on a sleeve into a coil by the sleeve is fixed on a driven winding spindle and the thread via a stationary head thread guide, a traversing device with a particular reciprocally driven traversing yarn guide and a contact roller on the sleeve and the spool is laid to form a fixing winding, a reserve winding and the coil. Sleeves are used, which are equipped with a catch area. In addition to the Chargierfadenführer two more yarn guide are provided which are mounted on a pivot arm which is mounted in the gap between the coil and an empty sleeve swivel. The first thread guide is movable in the winding spindle direction and serves to position the thread relative to the catching area of the empty shell. The second yarn guide directs the end of the yarn running onto the full bobbin. The traversing device, the contact roller, the winding spindle and the two yarn guides are provided on one side of the thread in such mutual relative position that the thread is guided by the swiveling arm carrying the yarn guide into the gap both from the surface of the empty sleeve as well as released from the traversing device, while the thread is applied during the return pivoting of the pivot arm using the head thread guide and the first thread guide to the capture area of the empty shell enlarging the wrap angle. For the realization of the swing arm, the two yarn guides and the associated drives a considerable machine effort is required. In addition, a movably controlled thread holder is used to secure the thread in the charging thread guide and targeted to let escape from this. When machine bobbin change the yarn is deflected twice in approximately right angles, which can lead to damage to the thread, especially if it is sensitive Spulgut. The position and the wound thread length of the fixing winding and the reserve winding are fixed and are therefore not variable. They depend on the geometry of the sleeves used, in particular on the arrangement of the catching area on the sleeve.

There are also winders that work with even three yarn guides, which basically increases the cost of training and the drive of these three yarn guides. Such a winder is known for example from DE 29 07 848 C2. The first thread guide is also provided here in the region of the traversing device and serves to lift the thread out of the traversing device and to position it relative to the trapping region of the empty tube. The second and the third yarn guide are even provided in duplicate and mounted on a turntable, respectively in the sectors between the two winding spindles. The second thread guide also serves to attach the end of the running thread on the full bobbin, while the third thread guide cooperates with the first thread guide, in such a way that the thread between these two thread guides perpendicular to the Spulspindelrichtung and thus relative to the Catch area of the empty tube is positioned. The catching area is formed by an incision provided perpendicular to the winding spindle direction on the circumference of the empty shell. The formation of the catch area in another way is not possible. The disadvantages described above occur here increasingly.

The US 4,298,171 shows a winder with a turntable and two winding spindles arranged thereon. The winding spindles are used to hold the sleeves and are in Spulspindelrichtung, ie in the direction of the axes of the winding spindles, movable to temporarily couple the respective winding spindle with the sleeve sitting thereon with a drive which accelerates the winding spindle to the speed of the contact roller, which then takes over the further drive of the winding spindle on the winding cycle.

DE 26 43 421 shows a method and a device for winding a continuously tapered thread on a sleeve to form a coil. It is used within the traversing a Kehrgewindewelle whose spatial position is axially changed by means of a cylinder by a fixed stroke in Spulspindelrichtung. The Kehrgewindewelle is driven by a controllable in its speed and reversible in its direction of rotation motor. The Kehrgewindewelle has in addition to the normal laying a stepless groove section, in which the traversing thread guide Direction of rotation reversal of the Kehrgewindewelle enters. A switch in the pitchless groove portion allows the traversing yarn guide in conjunction with a new direction of rotation reversal to reach the laying groove for the purpose of building the coil on the sleeve. It sleeves are used, which have a catching area. In an automatic bobbin change, the speed of the Kehrgewindewelle is initially reduced to one for the formation of a fixing winding - there called thread reserve - favorable value and the thread wound at this reduced speed on the full spool on. Through the following reversal of direction of rotation of the traversing yarn guide is transferred to the stepless groove section. Subsequently, an axial displacement of the Kehrgewindewelle to the fixed by the cylinder stroke, so that the thread passes into the capture range of the empty tube. After catching the thread in the catching area of the empty tube, a start-of-take detector is actuated in order to bring the reverse-thread shaft into its starting position. A timer for switching a control device to a forward rotation state is turned on. The disadvantage here is that the method of the traversing thread guide in the stepless groove section a reversal of direction must be done. The drive of the Kehrgewindewelle must therefore be a reversible motor. Another disadvantage is that only sleeves can be used with catching range and with fixed geometric dimensions. A flexible adaptation to sleeves with different dimensions is not possible. The formation of the layers of the fixing winding and the reserve winding are constant. The formation of the thread lengths of the fixing winding and the reserve winding are randomly dependent on the time at which the traversing yarn guide leaves the pitchless groove portion.

The pitchless groove portion of this winder can be arranged only outside the laying width of the endless Kehrgewindenut. This means that the fixing winding of the thread can only be arranged at one end region of the sleeve outside the laying width or very large axial displacement paths are required for the traversing device, if the fixing winding, e.g. should be arranged in the middle of the laying width.

The invention has for its object to provide a method and a winder and the type described in which position and thread length of the fixing winding or a fixing winding with subsequent reserve winding are variably preselected, namely when using sleeves with and without catching range.

The method of the type described above is characterized according to the invention in that once a spatial position of the driven traversing yarn guide of the traversing device detected, stored and stored as a reference position in the formation of the Fixierwicklung and the coil is used, and that the spatial positions of the traversing thread guide of the traversing device are determined on the winding cycle and tuned to the winding speed.

To form a fixing winding, in particular with subsequent reserve winding outside the package width, the traversing device is traversed in the winding spindle direction with the traversing yarn guide, thereby controlling the axial movement of the traversing device in relation to the spatial positions of the traversing yarn guide of the traversing device over the winding cycle such that on the sleeve successively the fixing winding, the reserve winding and the coil are determined and formed according to position and thread length.

The method requires first of all to know at an arbitrary point in time where the traversing yarn guide of the traversing device is located. This arbitrary time can be selected anew for each winding cycle. But it is also possible to select the arbitrary time after switching on the main switch of the winder under application of the control voltage once and assign a sequence of Spulbildungen or Spulreisen. At this arbitrary time, the spatial position of the driven traversing thread guide of the traversing device is detected once. This signal is determined by location and time, is stored and used as a reference position in the formation of the fixing winding, if necessary. Also the reserve winding, and the coil, so over the entire winding cycle. From this signal of the reference position, the spatial positions of the traversing yarn guide are determined in their time course over the winding cycle, so that it is known at any time, where is currently the traversing yarn guide. From the knowledge of these spatial positions out, it is then possible, especially at reduced speed of the Kehrgewindewelle targeted to approach individual selected positions in order to take in relation to the drive of the winding spindle or the peripheral speed of the straight wound thread on the sleeve, the various measures , For example, a fixing winding, if necessary. A subsequent reserve winding, and to form a coil, in which each of the local position and the thread length are set repeatable.

As traversing devices, the various types known in the prior art can be adopted unchanged, for example, a traversing device with driven Kehrgewindewelle and conventional laying channel or a traversing device with rotatable wings u. etc. ..

Since the fixing winding with subsequent reserve winding in all cases outside the Laying width of the coil is arranged, it is necessary to move the traversing device in Spulspindelrichtung to control these positions. This axial movement of the traversing device is controlled in relation to the known spatial positions of the traversing yarn guide over time so that relative to the sleeve on the winding spindle successively the fixing winding, the reserve winding and the spool, each adjustable and repeatable determined by position and thread length are formed.

The new method has a number of advantages. The fixing winding, if necessary with subsequent reserve winding, and the bobbin can be reproduced reproducibly according to layers and thread lengths according to the wishes of the user precisely defined and adhered to. It may be important to hold by the bobbin exchange impaired winding material with certainty in the fixing winding, the reserve winding, for example. to form from unchanged Spulgut, as well as the coil. In the new method, the arrangement and the corresponding mechanical effort for the drive of a second and third yarn guide from the prior art, which come into contact with the yarn during the bobbin change, is superfluous. Due to the extent reduced number of parts for the thread transfer also results in fewer points of friction for the Spulgut. The Spulgut is deflected gentler. Furthermore, eliminates problems that exist with the exit and reentry of the thread in the traversing yarn guide in the prior art. Advantageously, a multi-thread operation is possible because the Spulgut no longer has to leave the traversing yarn guide, even in the formation of the fixing winding and the reserve winding.

For adjustable definition of the position and the thread length of the fixing winding, the speed of the Kehrgewindewelle can be regulated or braked to at least approximately zero, that the traversing yarn assumes the selected relative position to the laying width of the winding spindle. This can be used with laying groove trained in the usual way Kehrgewindewellen. The additional arrangement of an unpolluted groove portion and a switch is basically unnecessary. In a decelerated to a speed zero and fixed Kehrgewindewelle the traversing yarn guide is exactly at the selected location within the laying width, and it is only dependent on the time, with which thread length the fixing winding is applied location accurate. Since the laying channel in the counter-rotating shaft has deflections which have a comparatively small pitch, these areas can also be used without accurate attainment of the rotational speed 0, at least for fixing windings of short thread length. If the fixing winding is not to be mounted within the laying width or in one of the two end regions of the coil, but outside the laying width or the coil width, which is predominantly the case, the axial displacement is Traversing device required in winding spindle direction. This shift is made variable adjustable or controllable, so that the exact position of the fixing winding relative to the ^' coil on the sleeve selectable and thus different winding to different coils can be fixed. It also eliminates the need to use a reversible motor for driving the Kehrgewindewelle.

Any spatial position of the driven traversing yarn guide of the traversing device can be detected with a first sensor, stored and used as a reference position in the formation of the fixing winding, if necessary. The reserve winding, and the coil. This determines the beginning of a control process and thus the winding travel. For this purpose, a first sensor can be activated at any time. The sensor monitors and detects the path of the driven traversing yarn guide. He sets simultaneously with the determination of a spatial position of the traversing yarn guide the beginning of a time and thus forms a reference position in order to relate to it during the winding cycle again and again to make a statement where the traversing yarn guide is currently located during the winding cycle.

But it is also possible to approach after each bobbin change a starting position in which the spatial position of the traversing yarn guide is known or fixed and then represents the beginning of a winding cycle. Such a start position can be detected or approached with an absolute encoder or an incremental encoder.

In particular, in the case of precision winding, the rotational speed of the counter-twisting shaft can advantageously be detected continuously in time with a second sensor. With precision winding, it is known to change the winding ratio over the winding cycle and thus the speed of the counter-twisting shaft. By detecting the change in the counterbore shaft can be accurately determined, in relation to the reference position, at which point at which time the traversing thread guide is relative to the winding spindle. You can also do without the second sensor. It is then possible to repeatedly use the first sensor and to close its signals with known geometry of the laying channel on the spatial position of the traversing yarn guide over a double stroke. This becomes particularly simple if the speed of the counter-clockwise shaft between two signals is kept constant.

A winding machine for winding a continuously tapered thread on a sleeve to form a coil, with the formation of a fixing winding, if necessary. With subsequent reserve winding, and the coil, in particular according to the method of claim 1 or 2, is initially customary per se. It is characterized according to the invention in that the Once a detection of a spatial position of the driven traversing yarn guide the traversing device, a first sensor or a corresponding element is provided, the signal fed to the control device, stored there in temporal association and used as a reference position in the formation of the fixing winding, if necessary, with subsequent reserve winding, and the coil is, and that the control device is designed to generate the spatial positions of the traversing yarn guide the traversing device on the winding cycle and for tuning to the winding speed.

If a fixing winding with subsequent reserve winding, that is to say outside the coil width, are to be formed, a controllable drive is provided for the temporally regulated method of the traversing device with the traversing thread guide in the winding spindle direction. The control device is designed so that the axial movement of the traversing device is controlled in relation to the spatial positions of the traversing thread guide of the traversing over the winding cycle so that on the sleeve successively the fixing winding, the reserve winding and the coil are determined and formed according to location and thread length ,

It is essential first of all a first sensor or a corresponding element, which is usually arranged in or on the housing of the traversing device, so as to monitor the stroke of the traversing yarn guide and determine at which time the traversing yarn guide passes through a spatial position. At this time, a signal is formed. The time is recorded and the signal is sent to a control device. Thus, a reference position is set, which is used in the formation of the fixing winding, possibly the reserve winding, and the coil. The control device is now designed so that it is able to make a statement about the respective spatial position of the traversing yarn guide relative to the winding spindle in response to this fixed reference position at any time. It is thus not only possible to make a statement as to where the traversing yarn guide is at a particular point in time, but even to predict where the traversing yarn guide will be at a time in the future, albeit adapted to the speed of the counter-shaft.

It is a controllable drive for moving the traversing device provided in Spulspindelrichtung, wherein it is important to ultimately bring the traversing yarn guide in a specific spatial position outside the laying width. It is of minor importance, whether the entire traversing device, including the housing, or only the Kehrgewindewelle be moved axially in the winding spindle direction in the housing. This axial mobility of the traversing device or the traversing yarn guide is used for Reaching positions which are arranged on the outside of the covered by the laying normal area. Thus, in particular, the fixing winding may be provided at one end or the other at a distance from the coil to be placed. Often this distance is also desired depending on the application and the type of sleeves used. The same applies to the reserve winding, which, although usually fills the distance between the fixing winding and the coil, but in individual cases can be formed separately and in particular with different thread length.

For the realization of such a winding machine can be used in essential elements unchanged on the state of the art. This is especially true for the arrangement of two winding spindles on a turntable, the formation of the traversing device with Kehrgewindewelle with laying groove and one or more traversing yarn guides. The traversing yarn guide can be designed for single-thread or multi-thread work. It is important for a Reseverwicklung an additional drive for an axial displacement of the traversing thread guide in Spulspindelrichtung and its control via a control device that knows or regulates the spatial assignment of the positions of the traversing yarn guide to the sleeve on the winding spindle.

It is advantageous if a second sensor is provided for the continuous detection of the speed of the Kehrgewindewelle over time. Also, this signal of the second sensor is fed to the control device, so that is known in conjunction with the reference position at any time, where the traversing yarn guide is relative to the winding spindle.

For the realization of the first and the second sensor, there are various possibilities.

For a single detection of a spatial position of the driven traversing yarn guide of the traversing device as the first sensor, at least one of the following elements can be provided: a) a non-contact proximity sensor, b) an absolute encoder, c) a device for setting a predetermined reference position.

To determine the time course of the spatial positions of the traversing yarn guide on the winding cycle as a second sensor, one or more of the following elements may be provided: a) an incremental encoder, in particular on the motor of the drive Kehrgewindewelle, b) a resolver, c) a non-contact proximity sensor, d) a tachometer, e) a time measuring device, f) an absolute encoder.

On the winding spindles sleeves can be used, which are equipped with a catching area. It is understood that the traversing yarn guide in the direction of the winding spindle must be movable so that the thread between the head thread guide and the catching area of the sleeve is stretched in as straight as possible with little kinked line so that the automatic bobbin change the thread in the capture area of the Empty tube caught. Once this snagging has been detected, the position can be approached in which the fixing winding is to be formed. The fixing winding can also be placed so that the catching area is wrapped.

The invention will be further explained and described with reference to preferred embodiments. Show it:

1 is a view of the essential parts of the invention for a winding machine in a first embodiment during the winding process of the spool over the winding cycle,

2 shows the winding machine according to FIG. 1 after a bobbin change in catching position, FIG.

3 is a view of the winder from the front,

4 shows a second embodiment of the winding machine during the winding of the coil,

5 the winding machine according to FIG. 4 in the catching position, FIG.

6 shows a third embodiment of the winding machine during winding of the coil,

7, the winding machine according to FIG. 6 in the catching position, FIG.

8 shows a further embodiment of the winding machine during winding of the coil, 9, the winding machine according to FIG. 8 in the catching position, FIG.

Fig. 10 is a schematic representation of the fixing winding, the reserve winding and the coil, and

Fig. 11 is a plan view of a traversing yarn guide for two-way operation.

In the drawings, only the essential parts for understanding the invention of the winder are given. The winder has a frame 1, on which a head thread guide 2 is arranged stationary. The head thread guide 2 runs to a thread 3, the laying triangle 4 is indicated by dash-dotted lines.

On the frame 1, a turntable 5 is rotatably mounted about an axis 6 in a known manner. The turntable 5 is driven rotated in a known manner during bobbin change. On the turntable 5, two winding spindles 7 and 8 are rotatably mounted and can be coupled in the operating position of the turntable 5 each with a drive via which the respective winding spindles 7 and / or 8 are driven. The winding spindle 7 according to FIG. 1 is in the operating position and is driven accordingly. On each winding spindle 7, 8 sits a sleeve 9, on which the thread 3 is wound into a coil 10.

On the frame 1 of the winder a traversing device 11 is provided. The traversing device 11 has a housing 12, which is mounted pivotably about an axis 13 on the frame 1 of the winder, so that the traversing device 11 can adjust during the winding diameter growing over the winding cycle (FIG. 3). In the housing 12 of the traversing device 11 a Kehrgewindewelle 14 is rotatably mounted, which is driven in the usual manner. The Kehrgewindewelle 14 also has a conventional endless Kehrgewindenut, with the help of a traversing yarn 15 is reciprocally driven, via the traversing, coil or laying width, which determines the width of the coil 10. For the drive of the Kehrgewindewelle 14, a motor 16 is provided, whose speed is controlled by a control device 17.

A catching device 18 is provided in order to catch the thread 3 at the beginning of a package construction. The catching device 18 can either be attached to each winding spindle 7, 8 permanently and thus independently of a sleeve 9. But it is also possible to use such elements as catcher, which are provided on each sleeve, so a corresponding catch notch, catch recess o. The like .. At the housing 12 of the traversing device 11 is finally a contact roller 19 (FIG. 3) stored, about the thread 3 on the Surface of the forming coil 10 is applied. The contact roller 19 is omitted in the other figures for reasons of clarity. The sectional view 11 in FIG. 3 clarifies the representation of FIG. 1.

Fig. 1 shows the winder at a time during the winding cycle, in which the diameter of the spool 10 on the sleeve 9 of the winding spindle 7 in operation has already grown relatively far. It is also indicated that on the sleeve 9 after catching the thread 3, first a fixing winding 20, then a reserve winding 21 and finally the coil 10 has been wound. The fixing winding 20 is a plurality of closely juxtaposed and / or superimposed windings of the thread 3. The reserve winding 21 connects to the fixing winding 20 and extends with a thread-like laying of the thread 3 to the end wall of the formed coil 10. These conditions are illustrated once again with reference to FIG. 10. Such a fixing winding 20 may be disposed immediately adjacent to the catching device 18 on the sleeve 9, but also in any other axially fixed position relative to the width of the sleeve 9. A reserve winding 21 only occurs when the fixing winding 20 outside the laying width of the coil 10 is provided. However, a fixing winding 20 is also understood as meaning a winding which is provided within the laying width of the coil 10.

1 furthermore shows that a first sensor 22 is provided on the traversing device 11. This first sensor 22 is used to detect the position of the traversing yarn guide 15. The first sensor 22 is connected via an electrical line 23 to the control device 17. Via the line 23, the signals of the first sensor 22 of the control device 17 are supplied. If the first sensor 22 is formed, for example, as a non-contact proximity sensor, it can be determined with him relative to its arrangement on the housing 12 of the traversing device 11, when the traversing yarn guide 15 z. B. reaches its reversal point on the winding cycle. Thus, a reference position of the traversing yarn guide 15 is set, formed and stored in the control device 17. This aims to have a reference point during the winding cycle, with which in connection with other elements over the entire winding cycle is detectable and fixable, where just the traversing yarn guide 15 is located.

The detection of the position of the traversing yarn guide 15 can also be done for several winding cycles before the start of the first winding cycle and before the delivery of the yarn after applying a control voltage to the winder. A repetition at each winding travel is not required. At the traversing device 11, a second sensor 24 is further arranged, from which also an electrical line 25 leads to the control device 17. The second sensor 24 is used to monitor, detect and detect the speed of the Kehrgewindewelle 14 during the winding cycle. This creates the opportunity to determine at any time of the winding cycle, at which point just the traversing yarn guide 15 is located.

From the control device 17, a control line 26 leads to the motor 16, which drives the Kehrgewindewelle 14. About this control line 26, the speed of the Kehrgewindewelle can be changed controlled. The speed can be selectively reduced, set to 0 or adjusted in a certain size. It is conceivable that the fixing winding 20 can be formed on the sleeve 9 at the desired location relative to the winding spindle direction 27. The fixing winding 20 can be arranged so far outside the laying width of the coil 10 or within the laying width 10. Figs. 1 and 2 show an embodiment in which the fixing winding 20 and the reserve winding 21 are provided outside the laying width on the left side of the sleeve 9.

As can be seen in particular from a comparison of FIGS. 1 and 2, the housing 12 of the traversing device 11 is not only pivotable about the axis 13, but additionally in the direction of the axis 13 axially displaceable. This aims to position the traversing yarn guide 15 for a certain time outside the laying width. For this purpose, a drive 28 is provided, which is designed here as a piston / cylinder unit 29, whose piston rod is connected to the housing 12 of the traversing device 11. It is a valve 30 is provided, which is formed for example as a pneumatic switching valve and connected to a compressed air supply. The valve 30 is controlled by the control device 17 via an electrical line 31. From the valve 30, pneumatic lines 32 and 33 lead to the piston / cylinder unit 29.

This makes it possible to move the traversing device 11 and in particular the traversing yarn guide 15 axially in the direction of the axis 13 or in the winding spindle direction 27 via the control device 17 at an arbitrarily selectable time. Fig. 2 shows such a controlled relative position, in which the traversing yarn guide 15 is in a position such that the thread 3 can be detected by the catching device 18 on the sleeve 9. As soon as the thread 3 is detected by the catching device 18, the drive 28 is actuated via the control device 17, while the motor 16 for driving the reverse thread shaft 14 continues to be braked, for example. The axial displacement of the traversing device 11 with the traversing yarn guide 15 is then terminated in such a position in the winding spindle direction 27 at which the fixing winding 20 is to be applied to the sleeve 9. This can not be take place only when stationary Kehrgewindewelle 14, but also in response to a targeted slow rotation of the Kehrgewindewelle 14, since anyway the control device 17, the position of the traversing yarn guide 15 is known at any time of the winding cycle. Over the length of the duration in which the traversing yarn guide 15 is stopped in the winding spindle direction 27, the yarn length is determined, which is wound on the rotating winding spindle 7 with the sleeve 9.

Subsequently, the reserve winding 21 is formed. For this purpose, the motor 16 of the Kehrgewindewelle 14 is controlled accordingly via the control device 17. As a result, the traversing yarn guide 15 moves over the axial length of the reserve winding 21, so that it is formed in a thread-like shape of the thread 3 on the sleeve 9.

For this purpose, the drive of the winding spindle 7 and the motor 16 is accelerated to the intended speeds and at the same time the drive 28 for the axial displacement of the traversing yarn guide 15 in its normal Ausgangsiage (Fig. 1) returned.

Fig. 3 illustrates the spatial arrangement of the head thread guide 2, the turntable 5, the traversing device 11 and the two winding spindles 7 and 8 of FIG. 1. Fig. 2 shows the parts after a bobbin change, so that the winding spindles 7 and 8 reverses their role have and on the sleeve 9 of the now in operation winding spindle 8, the new winding cycle by catching the thread 3 begins with the catcher 18.

With reference to FIGS. 4 and 5, a further embodiment of the winding machine is illustrated. This embodiment is based on the embodiment of Figs. 1 and 2, which is why reference may be made to the description thereof. In contrast, however, here lacks the second sensor 24. Instead, a timer 34 is provided and connected to the control device 17 or integrated into this. The timer 34 makes it possible to determine the respective position of the traversing yarn guide 15 via the winding cycle based on the signal of the first sensor to form a reference position. The drive 28 for the axial displacement of the housing 12 of the traversing device 11 with the traversing yarn guide 15 is electrically formed here. An electric motor 35 is provided which drives an adjusting spindle 36 in order to effect the axial displacement of the traversing device 11 in the winding spindle direction 27.

The embodiment of FIGS. 6 and 7 is based on the previously shown embodiments. In contrast, the two sensors 22 and 24 are missing here. Instead, one is Absolute encoder 37 provided in conjunction with a timer 34. The absolute value encoder 37 detects the exact position of the angle of rotation of the counter-rotating shaft 14 and thus the position of the traversing yarn guide 15. The drive 28 for the axial displacement is not between frame 1 and housing 12 of the traversing device 11, but between the housing 12 of the traversing device and the Kehrgewindewelle 14th intended. Thus, as a comparison of Figs. 6 and 7 shows, the Kehrgewindewelle 14 is moved with the traversing yarn guide 15 in the winding spindle 27 relative to the stationary housing 12 of the traversing device. Of course, the transmission of the drive via the motor 16 must be formed in accordance with the Kehrgewindewelle 14. It can also be seen that the fixing winding 20 and the reserve winding 21 are arranged here at the right end of the sleeve 9 outside the laying width of the coil 10.

In the embodiment of Figs. 8 and 9, an incremental encoder 38 is provided in place of the absolute encoder 37, in conjunction with a first sensor 22 and a timer 34. In this embodiment, no reserve winding is formed. The fixing winding is arranged in the middle of the laying width, wherein a hook tape 39 on the sleeve 9 serves as a catching device for the thread 3. With such a placement of the fixing winding 20, the axial displaceability of the traversing thread guide 15 in the winding spindle direction 27 and the associated drive 28 are eliminated.

10 illustrates, by means of an exemplary embodiment, the relative position of the fixing winding 20 to the reserve winding 21 and to the coil 10 on the basis of an exemplary embodiment of a winding machine, as illustrated and described in FIGS. 1 to 3, but also in FIGS. 4 and 5.

Fig. 11 shows a traversing yarn guide 15 with two adjacent notches for one thread 3, so for two-step operation. Thus, it is easy to imagine that the invention is also applicable to two- or multi-thread operation.

RF7Ufifi7FICHEN

1 - frame 11- ^■ traversing device

2 - Head thread guide 12- ^■ Housing

3 - thread 13- ^■ axis

4 - Installation triangle 14- ^■ Kehrgewindewelle

5 - turntable 15- - traversing thread guide

6 - 16 axis - engine

7 - winding spindle 17 - control device

8 - Winding spindle 18- - catching device

9 - Sleeve 19- - Contact roller

10-coil 20- - fixing winding

21 - reserve winding 31 ^■ - el. Line

22 - first sensor 32- - line

23 - el. Line 33- - line

24 - second sensor 34- - timer

25 - el. Line 35- - electric motor

26 - Control line 36- - Adjusting spindle

27 - Spool spindle direction 37- - Absolute encoder

28 - Drive 38. - Incremental encoder

29 - piston / cylinder unit 39. - hook band

30 - valve

Claims

PATENT CLAIMS;

1. Method for winding up a continuously running thread (3) on a sleeve (9) to a bobbin (10) by fixing the sleeve on a drivable winding spindle (7) and the thread (3) via a stationary head thread guide (2) , a traversing device (11) with a traversing traversing thread guide (15) driven in particular back and forth and a contact roller (19) on the sleeve (9) and the bobbin (10) to form a fixing winding (20) and the bobbin (10) and wound up, characterized in that a spatial position of the driven traversing thread guide (15) of the traversing device (11) is detected, stored and used as a reference position in the formation of the fixing winding (20) and the bobbin (10), and that the spatial Positions of the traversing thread guide (15) of the traversing device (11) are determined via the winding travel and are matched to the winding speed.

2. The method according to claim 1, characterized in that to form a fixing winding (20) with subsequent reserve winding (21) outside the bobbin width, the traversing device (11) with the traversing thread guide (15) is moved in the direction of the bobbin spindle, and that the axial movement of the Traversing device (11) in relation to the spatial positions of the traversing thread guide (15) of the traversing device (11) is controlled via the winding travel in such a way that the fixing winding (20), the reserve winding (21) and the bobbin () 10) be determined and formed according to position and thread length.

3. The method according to claim 1 or 2, characterized in that for the adjustable determination of the position and the length of the thread of the fixing winding (20), the speed of the reverse thread shaft (14) is braked in such a way to at least approximately zero that the traversing thread guide (15) the selected one Position to the winding spindle (7).

4. The method according to claim 1 or 2, characterized in that any spatial position of the driven traversing thread guide (15) of the traversing device (11) with a first sensor (22) is detected, stored and as a reference position in the formation of the fixing winding (20), if necessary. The reserve winding (21), and the coil (10) is used.

5. The method according to claim 1 or 2, characterized in that, in particular in the case of precision winding, the rotational speed of the reversing thread shaft (14) is recorded continuously over time with a second sensor (24).

6. winding machine for winding a continuously running thread (3) on a tube to a bobbin (10), forming a fixing winding (20), possibly with subsequent reserve winding (21), and the bobbin (10), in particular according to the method of claim 1 or 2, with two winding spindles (7, 8) mounted on a turntable (5), a stationary head thread guide (2), a traversing device (11) with a reversible thread shaft (14) and traversing thread guide (15), a contact roller (19) and the corresponding drives and a control device (17), characterized in that a first sensor (22) or a corresponding element is provided for the one-time detection of a spatial position of the driven traversing thread guide (15) of the traversing device (11), the signal of the control device ( 17) supplied, stored there in a temporal assignment and as a reference position in the formation of the fixing winding (20), possibly with subsequent reserve winding (21), and the bobbin (10) is used, and that the control device (17) is designed to generate the spatial positions of the traversing thread guide (15) of the traversing device (11) via the winding travel and to match the winding speed.

7. Winding machine according to claim 6, characterized in that a controllable drive (28) for the time-controlled movement of the traversing device (11) with the traversing thread guide (15) in the winding spindle direction (27) is provided, and that the control device (17) is designed in this way that the axial movement of the traversing device (11) in relation to the spatial positions of the traversing thread guide (15) of the traversing device (11) is regulated via the winding travel in such a way that the fixing winding (20), the reserve winding ( 21) and the bobbin (10) are determined and formed according to their position and thread length

8. Winding machine according to claim 6 or 7, characterized in that a second sensor (24) is provided for the continuous detection of the speed of the reverse thread shaft (14) over time.

9. Winding machine according to claim 6 or 7, characterized in that for one-time detection of a spatial position of the driven traversing thread guide (15) of the traversing device (11) as the first sensor (22) at least one of the following elements is provided: a) a contactlessly working proximity sensor , b) an absolute encoder, c) a device for setting a predetermined reference position.

10. Winding machine according to claim 6 or 7, characterized in that one or more of the following elements is provided as a second sensor (24) for determining the temporal course of the spatial positions of the traversing thread guide (15) via the winding travel:

a) an incremental encoder, b) a resolver, c) a non-contact proximity sensor, d) a tachometer, e) a time measuring device, f) an absolute encoder.

11. Winding machine according to one or more of claims 7 to 10, characterized in that each winding spindle (7, 8) is equipped with a catching device (18) for automatically catching the thread (3) when changing the bobbin and that the control device (17) for Approaching this position is also formed.