EP0703179A2 - Automatic winding machine and method for transferring a yarn from a full bobbin to a winding tube - Google Patents

Abstract

The coiling machine winds thread onto an empty casing (11) until a full coil is formed and has several deflector guides which guide the thread (14) during the transfer process when a full coil (3) is moved from a winding position to a withdrawal position and an empty casing is moved to the winding position. The deflector guides form by contact with the thread during the transfer process a first (50), second (52A) and third thread extent. The pair of deflector guides by which the second thread extent (52A) is formed are located as near as possible to the empty casing and to the full coil in order to reduce the total contact angle between the thread and the deflector guides.

Description

This invention relates to an automatic winding machine according to the preamble of patent claims 1, 3, 9, 17, 28 and 35 and a method for transferring the thread from a full bobbin to an empty tube according to the preamble of patent claim 21.

The present invention is useful for various automatic winder machines, including the so-called "turret type" described and illustrated in U.S. Patent Nos. 5,318,232 and 5,016,829. In these machines, the full bobbin is moved into the take-off position by the turret rotation, while an empty bobbin tube is brought into the winding position by the same turret rotation. The present invention relates to the "geometry" of the thread path in the machine, particularly during the transfer of the thread. Although the terms "bobbin tube" and "full bobbin" or "full bobbin" are used here in the singular to simplify this description, attention is drawn to the fact that the processes described also apply to a plurality of simultaneously used bobbins / bobbins.
Figures 1 through 3 illustrate parts of the machine described in U.S. Patent No. 5,318,232. As can be seen in more detail from the following description, an is on thread wound on this machine during the thread transfer, when the thread is transferred from a full package to an empty bobbin, by means of deflection guides in a steep contact angle. This process also takes place on the machine described in U.S. Patent No. 5,016,829. A certain mechanical damage caused by the influence of heat is caused by contact with the deflection guides in the thread or plastic material from which this thread is made. The damage inflicted on the thread depends on the total contact angle with the deflection guides, which include thread deflection elements with which the thread is held in the desired position as well as thread deflection elements which deflect the thread from the path that the thread would otherwise have automatically taken . The entire contact angle and thus the damage is influenced by the surface radius of these deflection guides. The damage done to the thread continues to depend on the speed and infeed tension of the thread. Although some damage is caused to each thread due to rubbing contact with a deflection guide, this is not acceptable for some sensitive threads, such as fine titer filaments.

The object of the present invention is to provide an automatic winder with a reduced overall contact angle between the thread and the deflection guides, at least in comparison with other known types of machine, such as the one described above, during the thread transfer. The object of the invention is also a method for transferring the thread from a full bobbin to an empty tube, with which the smallest possible contact angle can be achieved.
The object is achieved by an automatic winding machine in accordance with the features of patent claims 1, 3, 9, 17, 28 and 35 and by a method according to claim 21. The deflection guides acting on the thread during the thread transfer must form, generally speaking, at least three "lengths" or "sections":
a first length of thread (section) arranged at a predetermined angle with respect to the longitudinal axis of the empty bobbin tube to facilitate the collection of the thread by that tube (or an element connected thereto);
a second or middle thread length (section) extending from the above-mentioned first to the third length described below; and
a third thread length (section), which extends from the last deflection guide (in the direction of the thread movement) to the surface of the winding body.
The guides required to form the first thread length depend on the construction of the thread catching system. A possible method and a winder operating according to the method are described with reference to FIGS. 4 to 12. The present invention is also concerned with influencing the second and third thread lengths, as well as with the deflection guide (s) by which those thread lengths are formed.
In order to be able to reduce the total contact angle between a thread and the deflection guides in comparison with other known machines, the second or middle thread length at the time of transfer should preferably extend obliquely from a position close to the empty tube to a position close to the surface of a full package. In this context, the term "full package" refers to a package with the largest diameter that is to be produced on the machine in question. The contact angle between the thread and deflection guides can, at least insofar as this angle, by the arrangement of the second thread length can be influenced to a minimum by selecting such positions that are on the one hand as close as physically possible to the core and on the other hand to the winding body.
In practice, the arrangement of the second thread length is determined by an "upper" guide in the vicinity of the sleeve and a "lower" guide in the vicinity of the winding body. According to a preferred embodiment of the present invention, the lower guide is as close as possible to the surface of a full package during thread transfer. The lower guide cannot be left in this position during the entire winding, as this would disturb both the build-up of a new bobbin on the empty bobbin tube and the movement of the full bobbin from the winding position into a take-off position during the thread transfer. The lower deflection guide should therefore preferably be able to move between a standby and an operating position, and it is best to move into the operating position as soon as a full bobbin approaches the pull-off position, and that it should come back immediately before the time at which it would otherwise be would interfere with the construction of the new bobbin, returns to the standby position.
The lower deflection guide can have a curved element and take a curved path between the standby and operating position. The radius of curvature of this curved path or the operating position of the guide need only be somewhat larger than the radius of curvature of the circumference of a full winding body in the pull-off position. Devices for moving and positioning plates or sheets of this type are shown, for example, in JP-A-59-57452, US Pat. Nos. 4,598,876 and 4,613,090. In a preferred embodiment, the lower deflection guide is a flat sheet. The lower deflection guide can also be adapted so that it effectively shields the cut thread end of a full bobbin like a shield against the area in which the new sleeve is located. The lower guide can be given this shielding function by appropriate choice of its shape or by equipping it with a further element which can move on the guide in order to assume a shielding position and / or guide from its operating or deflecting position to a shielding position to move.

It is also possible to continue to oscillate the thread still running towards the full bobbin between the first and the second thread section with the traversing device in a shortened stroke on the full bobbin and thus the bead formation only shortly before the thread is transferred from the full bobbin to the new one Sleeve. Only the amount of thread deflected during the transfer and consequently somewhat impaired is used to form bulges on the full bobbin and the new empty tube. As it is part of the changing device, the deflecting rod which swivels into the thread course when the turret is rotated does not have to be passed through the narrow gap between the full bobbin and the empty sleeve after the thread has been transferred to the changing device and can therefore have a design that creates exactly the same conditions on all spools fitted on the mandrel. Furthermore, a separating plate can be inserted early between the full bobbin and the empty sleeve from the side opposite the changing device, so that after the thread is separated from the bobbin, the loose thread end that is rotating does not come into contact with the newly formed bobbin and can be carried away .

Figur 1

eine schematische, perspektivische Darstellung einer Spulmaschine entsprechend US-A-5,318,232,

Figur 2

ein schematischer Aufriss der in Fig. 1 dargestellten Spulmaschine,

Figur 3

eine schematische Teilaufsicht der Fadenübergabevorrichtung der in Figuren 1 und 2 dargestellten Maschine,

Figur 4

eine Ansicht einer Spulmaschine von vorne (schematisch),

Figur 5

eine Ansicht einer ersten Ausführung einer Auslenkstange von vorne,

Figur 6

eine Ansicht der ersten Ausführung der Auslenkstange von oben,

Figur 7

eine Ansicht einer zweiten Ausführung der Auslenkstange von vorne,

Figur 8

eine Ansicht der zweiten Ausführung der Auslenkstange von oben,

Fig.9A bis 9H,

je eine Ansicht der Spulmaschine von vorne in acht 9H Verfahrensstufen,

Fig.10A,10C,10E,10G,10H

je eine ausschnittweise Ansicht der Lage der Spule und der leeren Hülse sowie des Fadenlaufes in acht Verfahrensstufen,

Figur 11

eine Aufsicht auf eine Übergabevorrichtung mit einer Auslenkstange gemäss Figur 6,

Figur 12

einen Querschnitt durch die Übergabevorrichtung längs Linie IX - IX in Figur 11,

Fig.13A

eine schematische Veranschaulichung des während einer übergabe durch die Ablenkführungen entsprechend Figur 3 erzeugten Fadenlaufs,

Fig.13B

eine Ablenkwirkung einer Ablenkführung im Detail,

Figur 14

eine schematische Vorderansicht einer alternativen Fadenübergabevorrichtung,

Fig.15A bis 15D

diagrammatische Veranschaulichungen der Bewegung der unteren, in Figur 14 dargestellten Ablenkführung aus einer Bereitschafts- in eine Betriebsposition,

Fig.15E

eine zur Bewegung des Abschirmblechs vorgesehene Anordnung,

Figur 16

eine alternative Form der der vorliegenden Erfindung entsprechenden Fadenübergabevorichtung,

Figur 17

eine schematische, perspektivische Darstellung einer alternativen Form der Ablenkführung, die adaptiert worden ist, um gleichzeitig als Abschirmung zu funktionieren,

Figur 18

eine Draufsicht einer alternativen Ausführungsart, die die gleichen Funktionen wie die Ausführungsart in Fig. 17 aufweist,

Figur 19

eine Draufsicht einer weiteren Ausführungart im Sinne der vorliegenden Erfindung,

Figur 20

eine schematische, perspektivische Ansicht mehrerer voller Wickelkörper zusammen mit einem modifizierten Fadenführungs- und Abschirmblech,

Figur 21

eine Ansicht von der Front einer entsprechend Figur 20 gebildeten Aufspulvorrichtung,

Figur 22

eine Ausführungsart einer Bewegungsvorrichtung für das in Figuren 20 und 21 gezeigte Blech, schematisch dargestellt,

Figur 23

eine andere Ausführungsart einer Bewegungsvorrichtung für das Blech und

Figur 24

eine schematische Darstellung von der Front der Aufspulvorrichtung, in der die an der Übergabe beteiligten Elemente gezeigt werden, die die Geometrie des Fadenweges im dem Moment veranschaulichen, wenn der Faden gefangen wird.

The process of changing the spool and the design of the deflection means are simple and reliable. The descriptions of the exemplary embodiments of the invention now follow with reference to the accompanying drawings. Show it:

Figure 1

2 shows a schematic, perspective illustration of a winding machine in accordance with US Pat. No. 5,318,232,

Figure 2

1 shows a schematic elevation of the winding machine shown in FIG. 1,

Figure 3

2 shows a schematic partial top view of the thread transfer device of the machine shown in FIGS. 1 and 2,

Figure 4

a view of a winding machine from the front (schematic),

Figure 5

a view of a first embodiment of a deflecting rod from the front,

Figure 6

a view of the first embodiment of the deflecting rod from above,

Figure 7

a view of a second embodiment of the deflecting rod from the front,

Figure 8

a view of the second embodiment of the deflecting rod from above,

Fig. 9A to 9H,

one view of the winding machine from the front in eight 9H process stages,

Fig. 10A, 10C, 10E, 10G, 10H

a partial view of the position of the bobbin and the empty tube and the thread run in eight process steps,

Figure 11

6 shows a top view of a transfer device with a deflecting rod according to FIG. 6,

Figure 12

11 shows a cross section through the transfer device along line IX-IX in FIG. 11,

Fig. 13A

a schematic illustration of the during a handover generated by the deflection guides according to FIG. 3,

Fig. 13B

a distracting effect of a deflection guide in detail,

Figure 14

1 shows a schematic front view of an alternative thread transfer device,

15A to 15D

diagrammatic illustrations of the movement of the lower deflection guide, shown in FIG. 14, from a standby into an operating position,

Fig.15E

an arrangement provided for moving the shielding plate,

Figure 16

an alternative form of the thread transfer device according to the present invention,

Figure 17

2 shows a schematic, perspective illustration of an alternative form of the deflection guide, which has been adapted to function as a shield at the same time,

Figure 18

17 is a top view of an alternative embodiment having the same functions as the embodiment in FIG. 17.

Figure 19

2 shows a top view of a further embodiment in the sense of the present invention,

Figure 20

1 shows a schematic, perspective view of several full winding bodies together with a modified thread guide and shielding plate,

Figure 21

3 shows a view from the front of a winding device formed in accordance with FIG. 20,

Figure 22

An embodiment of a movement device for the sheet shown in Figures 20 and 21, shown schematically,

Figure 23

another embodiment of a moving device for the sheet and

Figure 24

a schematic representation of the front of the Winding device, in which the elements involved in the transfer are shown, which illustrate the geometry of the thread path at the moment when the thread is caught.

Figures 1 to 3 relate to an automatic winder in the so-called "turret design", as described, for example, in US Pat. No. 5,318,232. It can be seen from FIG. 1 that the winding machine 1 comprises two winding mandrels or chucks 5, 7 on a rotatable turret 2, a thread laying device 6 of a known type (also referred to as a traversing device) and a machine housing 9 in which drive motors for the contact roller 8 and the laying device 6 and the other parts of the control mechanism are housed. The turret 2, on which the two mandrels 5, 7 are seated, is of a known type and can be rotated about the axis A. The two mandrels 5, 7 are overhung on the revolver 2 so that the empty sleeves 11 or the full thread winding body 3 can be attached or removed from the front by hand or by a doffer.
In Figure 1 there is a thread deflecting device in front of the empty sleeve on the mandrel 7. The thread deflecting device is L-shaped in shape because it has a horizontal arm 13 arranged parallel to the axis of the mandrels 5, 7 and a crank arm 15 attached to one end of the horizontal arm 13. The crank arm 15 is on the support for rotation about axis B. 10 attached. The carrier 10 is mounted on the machine housing 9. The end of a change plate or transfer mechanism 17 can be seen behind the coil mandrel 7.
As can be seen in Figure 2, both Contact roller 8 and the laying device 6 are mounted so that they can move vertically to the housing 9 on the common carrier 10, so that the contact roller 8 increases with the increasing circumference of the winding body 3 at the same time and maintains a controlled contact pressure on this winding body 3 can be. The contact pressure and direction of movement for the carrier 10 are regulated in a conventional manner and are not specific objects of this invention. Therefore, no detailed description follows here.
The dash-dotted thread 14 approaches the machine from above and is guided back and forth by the thread guide 12 of the laying device 6 in a known manner across the width of the winding body 3 under construction.
A thread lifting device 19 is provided above the laying device 6 in order to lift the thread 14 out of the thread guide 12 during the thread transfer. The thread lifting device 19 can have a plate 21 which rotates about the axis C. This device is conventional in nature and is disclosed in U.S. Patent No. 5,102,060 (see, for example, the pivotable thread removal plate 134 disclosed in that patent). A pivotable guide plate or thread rest 25 rotates or shifts about axis E. This thread rest 25 is also disclosed in the above-mentioned US Pat. No. 5,102,060 (see, for example, the pivotable and displaceable thread rest plate 132 disclosed in that patent).
After it has been removed from the laying device 6 by the lifting device 19, the thread 14 is laterally displaced in order to be caused to run on the folding plane Z in which a thread catching slot opens the sleeve 11 is located (see Figure 3). Accordingly, the lifting device 19 and the thread guide plate 25 together form a removal and return means in order to remove the thread 14 from the laying device 6 and to bring it back into position laterally via the transfer plane Z. The catch slot could also be formed in the mandrel.
The interchangeable plate 17 is arranged under the laying device 6. This is attached to a holder 27 by two parallel arms, each arm being pivotally connected to the interchangeable plate 17 and the holder 27. The holder 27 is mounted on the carrier 10 and can be rotated about the axis G. The pivots of the axis run in a bearing structure (not shown). In order to pivot the interchangeable plate 17, the interchangeable plate 17 and the holder 27 are connected to an actuating element (not shown), for example with a hydraulic cylinder, an electrical switching magnet, etc. The interchangeable plate 17 and the holder 27 form a thread manipulator in accordance with the following explanation.
A thread adjuster in the form of a fixed hook 31 is fastened to the interchangeable plate 17 in order to cause the thread 14 to run over the plane X (see FIG. 3). On the interchangeable plate 17 there is also a thread change-over element in the form of a rotary hook 33 which can be rotated on a pin 41 and which pivots in a plane which lies above the plane of action of the fixed hook 31. To pivot the rotary hook 33 from a retracted position (indicated by dash lines in Figure 3) and an extended position (indicated by solid lines in Figure 3), an actuator (not shown) is provided, e.g. a hydraulic cylinder, an electrical switching magnet, etc. The Thread 14 is from Extended rotary hook 33 (indicated by solid lines in FIG. 3) positioned in the folding plane 2. A separating member 42 of flat shape is also mounted on the interchangeable plate 17. The separating member 42 can rotate freely in a plane that lies above the swivel plane of the rotary hook 33. An actuating element (not shown) is provided for pivoting the separating member 42 from a retracted position (indicated by solid lines in FIG. 3). The separating member 42 has the function of preventing the loosely hanging end of a thread 14 severed on the winding former 3 from coming into contact with an empty sleeve 11. The broken line of the separator 42 in FIG. 2 corresponds to the extended position of the separator 42.
The intersection of the plane X with the winding body 3 lies where a thread reserve 37 is to be formed on this winding body 3. The catch slot 23 on the empty sleeve 11 lies in level Z. In addition, the level U located between the levels X and Z in FIG. 3 coincides with the laying and traversing stroke end of the full winding body 3.
When the changing device or the changing plate 17 is moved into its drain position, the hook 33 is pivoted to its extended position. The holder 27 is also rotated about axis G, whereby the change plate 17 is caused to pivot so that the front edge 39 of the change plate 17 runs sufficiently far to the left in FIG. 2 to press the thread 14 against the empty sleeve 11. The thread section moving through the plane Z is thus caught by the catch slot 23, and the section of the thread 14 running to the full winding body 3 can be separated.
So that the loosely hanging end of the separated thread 14 on the still rotating full bobbin 3 can not touch the empty bobbin 11, the separating member 42 is brought into a position between the empty tube 11 and the loose thread end by its actuator. The actuating members of the separating member 42 and the rotary hook 33 can be energized at the same time, because the actuating member of the separating member 42 is slower, it assumes its extended position only after the thread 14 has been cut off. The thread separator 42 thus behaves like a barrier between the loose thread end and the empty winding body 11.
In FIG. 13A, the thread path generated by the deflection guide of a winding device corresponding to FIGS. 1 to 3 is shown schematically. This thread course comprises a first length or partial section 50, at the point in time at which it is caught by the new bobbin tube 11, runs essentially at right angles to the longitudinal axis of the tube 11. This length 50 of the thread 14 is located between a first deflection guide, embodied here by the thread guide plate 25, and a second deflection guide, embodied here by the hook 33.
A second or intermediate length (section) 52 of the thread 14 extends from the hook 33 to the hook 31 (FIG. 3), where after deflection it then forms a third thread length 54, which does not run from the hook 31 to the full winding body 38). The thread guide plate 25 and the hooks 33 and 31 are not illustrated in Figure 13A, although the deflecting effect is clearly visible in this figure. The purpose of the reference numbers is to indicate the respective places at which they act on the thread 14. For example, in FIG Deflection effect of a guide 34 shown. The thread length 50 coming from the thread guide plate 25 touches the guide 34 for the first time at point R of FIG. 13B, then runs around a curved surface on the guide 34 to point T, in order then to form the thread section 52 which extends to the hook 31. The arc RT on the curved guide surface (angle S) is the "contact angle" given between the thread 14 and this guide 34. The total contact angle between the thread 14 and all deflection guides corresponds to the arithmetic sum of all contact angles on the thread guide plate 25 and the hooks 33 and 31. In the exemplary embodiment according to FIGS. 1 to 3, this contact angle sum can approach or exceed 270 °. For the reasons given in the introduction to this description, such a high contact angle sum is not permissible for all filament types, and it is generally desirable to reduce this contact angle sum to a minimum whenever possible.

FIG. 4 shows, as already described for FIG. 2, a winding machine 201 with two winding mandrels 205, 207 mounted on a rotatable turret 202, a traversing or thread laying device 206 of known construction, and the machine housing 209, which drives the drive motors for the guide and contact roller 208 , the laying device 206, a changing device 217 and the other units and parts of the controller. The turret 202, which carries the two spindles 205, 207, has a known construction and is rotatably mounted about the horizontal axis A. The two spindles 205, 207 are overhung on the turret 202, so that loading with an empty sleeve 211 or the removal of the full spools of thread 203 in the waiting position below can be done by hand or by an automatic doffer on the front.
As can also be seen, the contact roller 208 and the traversing device 206 are mounted so that they can move vertically on the machine housing 209 on a common carrier slide 210, so that the contact roller 208 can move upwards with increasing diameter of the coil 203 while maintaining a constant contact pressure. The regulation of the contact pressure and the device for displacing the carrier 210 are also known from the prior art and are not the subject of this invention. They are therefore not described in more detail.
The thread 214 drawn in dash-dotted lines runs from above the machine and is oscillated by a thread guide 212 producing the thread stroke on the traversing device 206 in a known manner over the width (stroke H) of the bobbin 203 to be produced. Above the traversing device 206, a thread lifting device 219 for lifting the thread 214 out of the thread guide 212 of the traversing device 206 is visible. The thread lifting device 219 can consist of a thread lifting plate 221 pivotable about an axis C. A guide plate 225 which can be pivoted about the axis D in the thread run is intended to axially guide the thread 203 lifted from the traversing 206 into a plane Z running through a thread catching slot 223 or a knife on the sleeve 211 (see FIG. 10G). Below the traversing device 206, a changing device 217 is arranged together with a deflecting rod 213 on a holder 227 pivotable about an axis G and can move from a rest position during the winding process (FIG. 9A) via a catch position (FIG. 9B) to a take-over position (FIG. 9C). and then in a transfer position (Figure 9F) can be pivoted. The deflecting rod 213 is fastened to the front edge of the changing device 217 to form a slot-shaped intermediate space, called a guide slot 261 for short.

For the time being, two possible configurations of deflecting rods 213 are described. In FIGS. 5 and 6, the deflecting rod 213, which serves to deflect and parallel the thread 214 along the stroke H above the spool 203, is shown with an essentially round cross section and consists of two coaxial guide rods 231 and 232, the end sections 233 and 234 of which overlap each other. The end sections 233, 234 have mutually opposite end faces 235, 236 which are arranged at an acute angle to the common longitudinal axis H of the guide rods 231, 232 and form the catching area X (FIG. 11). In addition, the end faces 235, 236 are not flat, but curved, in such a way that the end faces 235, 236, which essentially have a spherically curved elliptical contour, do not intersect the lateral surfaces of the guide rods 231, 232 on mutually diagonally opposed surface lines. This can have the effect that, in the view from above in FIG. 6, the front end E of the end section 233 lies in the front in the catching edge 238 (viewed in the pivoting-in direction of the changing device 217) and the front end F of the end section 234 does not lie on the guide edge 237, but instead remains below this and consequently without influence on the thread 214 to be changed along the guide edge 237. The front end E of the end section 233 can additionally be bent outwards in order to make it easier to catch the thread 214.

In the second embodiment of the device, round guide rods 239, 240, whose end sections 241, 242 also overlap, take the place of round guide rods with a cross section. The first end section 241 is double cranked on the broad side; the second end section 242 is double cranked to the narrow side. The cranked region of the end sections 241 comes to lie parallel over the rectilinear part of the guide rod 240; the cranked area of the second end section 242 protrudes laterally beyond the catching edge 238 and catches the thread 214 passed by the traversing device 206 with its end E and guides it from the catching edge 238 to the rear guide edge 237. Instead of the rectangular guide rods 239, 240, of course, also use appropriately bent wires (no Fig.).

The individual method steps when changing the bobbin are now described with reference to FIGS. 9A to 9H and 10A to 10H.
FIG. 9A shows the winding machine 201 at the time before the start of the bobbin change. The full bobbin 203 is lifted off the contact roller 208 by rotating the turret 202 in a clockwise direction. The thread 214 tapering through an eyelet 229 (FIGS. 4, 10A) continues to be fed at an undiminished speed and is oscillated by the thread guide 212 on the traversing device 206 over the entire stroke H of the still rotating spool 203. After the revolver 202 has been rotated by approximately 80 °, the change device 217 with the change plate attached to it is pivoted from a rest position (FIG. 9A) into a first working position (FIG. 9B). In this position, the catching edge 238 of the deflecting rod 213 arrives the front edge of the changing device 217 is fixed in the traversing area and path of the thread 214. The thread 214 is caught there on one of its stroke paths leading along the catching edge 238 from the projecting end E of the end section 234 and between the spaced end sections 233, 234 and 241 , 242 through to the rear guide edge 237 of the deflecting rod 213 (Fig. 9C and Fig. 10C). Within the now shortened stroke Hk in the guide slot 261 (FIG. 11) between the ends of the guide edge 237, the thread 214 can be continued on the full spool 203 which is still rotating. After catching the thread 214 with the deflecting rod 213, the changing device 217 pivots back counterclockwise by a few angular degrees in order to keep the thread 214 away from the surface of the empty sleeve 211 which is now in the working position and to reliably avoid premature contact and undesired entrainment (FIG. 9D & 9E). In the meantime, the support 243 of a separating device 245, which was previously positioned outside the pivoting path of the empty sleeve 211, has been pivoted against the empty sleeve 211 in the operating or working position. The thread 214 is guided approximately at a right angle through the leading edge 237 of the deflecting rod 213 during this process stage.
In the meantime, the empty sleeve 211 has come into contact with the contact roller 208 and has reached the winding speed (FIG. 9E), so that the loss-free thread transfer from the full bobbin 203 to the empty sleeve 211 can begin. This process step is initiated by lifting the thread 214 out of the traversing device 206 and holding the latter with a sliding plate 225 (FIG. 10E). The interruption of the oscillation forms a surface or end bead 249 immediately on the surface of the full bobbin 203, which later makes it easier to find and grasp the end of the thread during further processing of the bobbin 203. During the formation of the end bead 249, the changer 217 pivots clockwise, thereby bringing the thread 214 tangentially into contact with the surface of the empty sleeve 211 (FIG. 9F). At the same time, the incoming thread 214 with the sliding plate 225 and with a deflecting element 263 which can be inserted into the guide slot 261 on the changing device 217 is deflected laterally out of the stroke region H on the inflow side of the deflecting rod 229 (FIG. 10G). Now, when the sliding plate 25 is shifted to the right (FIG. 10H), the thread 214 comes into the effective range of a knife or a catch slot 223 on the empty sleeve 211 or on the mandrel 207 and is caught and severed there.
After being severed in the catch slot 223, the loose end of the tapering thread 214 adheres to the empty sleeve 211 and is initially wound up there for a while outside the stroke area H as a bead-shaped thread reserve. So that a bead can be formed, the tapering thread 214 remains held in the slot 226 on the sliding plate 225 before the latter is pivoted out of the thread path and the thread 214 is gripped by the thread guide of the traversing device 206 and is swung immediately via the stroke H (FIGS. 9H & 10H ).
Immediately during the cutting of the thread 214, a separating plate 255 is inserted between the full bobbin 203 and the substantially still empty sleeve 211 from the separating device 245 brought up to the empty sleeve 11, around the end of the severed thread 214 flung around by the full bobbin 203 to prevent contact of the empty sleeve 211 (Fig. 9G).

The partition plate 255 remains active until the full spool 203 has come to a standstill and / or has been removed from the mandrel 205 and replaced by a new empty sleeve 211 (situation as in FIG. 9A). The separating device 245 is then returned to the waiting position. A separating device 245, such as that shown schematically in FIGS. 9A to 9H, is described, for example, in Swiss patent application no. 02313/94 of July 21, 1994.
Another preferred separating device is described below with reference to FIGS. 14 to 24.

• -Fig. 15A - die Fadenaufwicklung eines Wickelkörpers 3 ist vollständig, aber der Revolver 2 hat noch nicht angefangen sich zu drehen;
• -Fig. 15B - der Revolver hat angefangen sich zu drehen, um den vollen Wickelkörper 3 zur Abzugstellung und die Spulenhülse 11 zur Aufwickelstellung zu führen (in Kontakt mit Walze 8);
• -Fig. 15C - der volle Wickelkörper 3 befindet sich in der Abzugstellung und die neue Spulenhülse 11 in der Aufwickelstellung, aber Faden 14 wurde noch nicht auf die neue Hülse 11 umgelegt; und
• -Fig. 15D - der Faden 14 wird auf die neue Hülse 11 gelegt und die Fadenübergabe steht also nahe bevor oder ist bereits abgeschlossen.

Der Träger 58 weist an seinem freien, vom Drehzapfen 60 entfernten Ende eine Stange 64 (Fig. 14) auf, die die Vorderkante der Wechselvorrichtung 56 bildet, sobald der Träger 58 aus der eingefahrenen zur ausgefahrenen Position geschwenkt wird. Zur Bewegung der Wechselvorrichtung 56 kann jede zweckdienliche Antriebsanordnung verwendet werden, wie z. B. die in Fig. 15B allgemein dargestellte Antriebsanordnung 59 oder eine solche, wie sie in Figur 12 mit Bezugszeichen 17 dargestellt ist. Hinter der Stange 64 befindet sich ein schlitzförmiger Zwischenraum 66, d.h. zwischen der Stange 64 und der Kante 68 am Träger 58. Die Kante 68 des Träger 58 erstreckt sich parallel zur Stange 64.
Die Stange oder Schiene 64 wird wie in Figur 11 aus zwei koaxialen Teilen 64A und 64B gebildet, die aus im folgenden beschriebenen Gründen durch Spalt 70 getrennt werden. Sobald die Wechselvorrichtung 56 aus ihrer eingefahrenen Stellung (Fig. 15A) zu ihrer ausgefahrenen Position (Fig. 15B) bewegt wird, wird die sich von Kontaktwalze 8 zum vollen Wickelkörper 3 (Fig. 15B) erstreckende Fadenlänge durch die Vorderkante 72 der Stange 64 berührt. In diesem Zeitpunkt wird der Faden durch die auf ihn von der Verlegungsvorrichtung 6 (Fig. 2) übertragene Bewegung immer noch über einen wesentlichen Teil der Wickelkörperbreite hin- und hergeführt. Sobald sich der Faden während seiner Bewegung von rechts nach links entsprechend der Darstellung in Fig. 14 entlang Spalt 70 ausrichtet, wird er in diesen Spalt 70 eingefädelt und durch diesen Spalt in den langen Zwischenraum 66 hinter der Stange 64 geführt. Der Faden steht dann in Berührung mit der hinteren Kante 68. Da der Zwischenraum 66 langgestreckt ist, kann sich der Faden unbehindert über die Breite des Wickelkörpers hin- und herbewegen. Die Wechselvorrichtung 56 kann jetzt etwas zu ihrer eingefahrenen Stellung hin zurückgezogen werden, wie z.B. auf die in Fig. 15C gezeigte Stellung, um den Faden 14 auf diese Weise aus dem Weg der neuen Spulenhülse 11 abzulenken, sobald sich diese der Kontaktwalze 8 nähert. Der Faden 14 setzt seine Hin- und Herbewegung im langen Zwischenraum 66 während dieser Rückzugsbewegung ununterbrochen fort, wobei er je nach den Umständen durch die Kante 68 oder die Hinterkante 74 der Stange 64 geführt wird. Infolge der Gestaltung des Spaltes 70 kann der Faden in den Spalt 70 eintreten, wenn er sich in Berührung mit Vorderkante 72 der Stange 64 befindet, aber nicht, wenn er sich in Berührung mit der Hinterfläche 74 von der Stange 64 befindet. Der Faden 14 kann folglich nur in den Zwischenraum 66 hinein jedoch nicht mehr aus diesem hinaus gleiten.
Wenn die ankommende Hülse 11 richtig bezüglich der Kontaktwalze 8 (Fig. 15C) positioniert worden ist, kann die Wechselvorrichtung 56 wieder in Richtung der neuen Spulenhülse 11 in eine Stellung versetzt werden, in der die zwischen Kontaktwalze 8 und Kante 68 der Wechselvorrichtung 56 gegebene Fadenlänge in Berührung mit der neuen Spulenhülse 11 versetzt werden kann. Jetzt wird die auf dem Trägerabschnitt 58 montierte Platte 76 von der in Fig. 14 in Vollinien dargestellten Position in jene Stellung versetzt, in der das mit Ablenknase 78 versehene Ende von Platte 76 durch eine punktierte Linie dargestellt wird. Die Platte 76 ist, um diese Bewegung ausführen zu können, mit dem Schieber 80 verbunden, der bezüglich des Führungsnockens 84 bewegt werden kann und mit einem Schlitz 82 versehen ist. Der Führungsnocken 84 wird durch geeignete Mittel (nicht abgebildet) auf dem Träger 58 so montiert, dass er auf diesem nicht bewegt werden kann. Ehe die Wechselvorrichtung 56 zur Ausübung des in Fig. 15D dargestellten, eigentlichen Übergabeschrittes veranlasst wird, wird der Schieber 80 bezüglich des Trägers 58 derart positioniert, damit Schlitz 82 die in Fig. 14 in Vollinien dargestellte Position einnimmt. Der Nocken 84 befindet sich also in einem gekrümmten Abschnitt 86 von Schlitz 82. Die Platte 76 wird, sobald sich der Schieber 80 in dieser Position befindet, mit Bezug auf die Stange 64 zurückgezogen, damit die Hin- und Herbewegung des Fadens 14 in dem oben erwähnten Zwischenraum 66 nicht durch die Nase 78 gestört wird. Die Nase 78 befindet sich also völlig hinter der bereits erwähnten Führungskante 68. Der Schieber 80 wird während des eigentlichen Übergabeschrittes bezüglich zu der in Fig. 14. in Vollinien gezeichneten Position nach links bewegt. Der Nocken 84 greift dann in einen geraden Teil 88 des Schlitzes 82 ein, der am Ende der Bewegung des Schiebers 80 die in Fig. 14 punktiert gezeigte Stellung eingenommen hat. Der Schieber 80 wird während dieser Bewegung bezüglich des Trägers 58 nach vorne bewegt, und zwar in Richtung auf die Stange 64 zu. Demzufolge bewegt sich die Nase 78 durch den Zwischenraum 66 hindurch. Die Nase 78 weist eine Schrägkante 90 und eine hakenförmige Kante 92 auf. Wenn der Faden 14 rechts von der Nase 78 liegt, ehe diese durch Zwischenraum 66 vorwärts läuft, dann berührt der Faden 14 während seiner Hin- und Herbewegung zuerst Schrägkante 90, um dann an der Nase 78 vorbei in den Zwischenraum 66 zu laufen, der sich an der linken Seite der Nase 78 befindet. Ein jetzt ansetzender Versuch des Fadens 14, wieder nach rechts zurückzulaufen, wird durch die hakenförmige Kante 92 verhindert. Wenn der Faden 14 andererseits zuerst links von der Nase 78 zu liegen kommt, dann wird er ohnehin durch die hakenförmige Kante 92 aufgefangen, sobald er versucht, sich in Richtung des rechten Endes des Zwischenraums 66 zu bewegen. Die Nase 78 weist weiter eine gerade Kante 94 auf, an die die Kanten 90 und 92 anschliessen. Der Faden 14 wird anfänglich durch die Nase 78 nicht zurückgehalten und kann an der Nase 78 dann entweder rechts oder links vorbeilaufen, was von seiner anfänglichen Bewegungsrichtung zur Zeit der ersten Berührung abhängt. Wenn der Faden 14 von der hakenförmigen Kante 92 aufgefangen worden ist, wird er durch die Weiterbewegung der Platte 76 in die Stellung, die durch die gestrichelte Darstellung der Nase 78 angezeigt wird, abgelenkt, wodurch der Faden 14 über den Wickelhub hinaus in eine bei 77 in Fig. 14 gezeigte, völlig umgelenkte Stellung gebracht wird.
In Fig. 14 wird ebenfalls das oben erwähnte Fadenführungsblech 25 (siehe auch Fig. 2) in Gestalt einer Platte oder eines Bleches 25A dargestellt, die mit einem Schlitz 25B versehen ist. Wenn die Wickelbewegung entsprechend der Beschreibung bei Figuren 1 und 2 gestoppt wird, wird der Faden 14 im Schlitz 25B gefangen. Sobald die Platte 25A entsprechend Fig. 14 nach links bewegt wird, wird der im Schlitz 25 B gefangene Faden 14 dementsprechend in eine Position ausserhalb des normalen Bewicklungshubs versetzt, wie es in Fig. 14 bei 75 dargestellt wird. Auf diese Weise wird zwischen dem Schlitz 25B und der hakenförmigen Kante 92 die erste Fadenlänge 50 gebildet, die funktionsmässig der Länge 50 in Fig. 13A und 13B entspricht und im rechten Winkel zur Längsachse der neuen Hülse 11 steht, deren Umrisse in Fig. 14 gestrichelt dargestellt worden sind.
Die Platte 76 und insbesondere die daran ausgebildete Nase 78 bildet die zulaufseitig gelegene Ablenkführung eines Paares von Ablenkführungen, welche den mittleren oder zweiten Fadenabschnitt 52 begrenzen, wie dies in Fig. 3 dargestellt ist. Die untere Führung dieses Führungpaars befindet sich beim Ausführungsbeispiel von Fig. 14 jedoch nicht an der Wechselvorrichtung 56, sondern wird durch eine Führungskante 96 am Blech 98 bewirkt, das der zylindrischen Aussenfläche des vollen Wickelkörpers 3 so nahe wie möglich liegt. Die Führungskante 96 wird in ihrer einfachsten Form in Fig. 14 illustriert. Alternativen werden unter Bezugnahme auf Ziffern der folgenden Zeichnungen beschrieben werden. Zuerst soll jedoch unter Bezugnahme auf die Diagrammfolge in Figuren 15A-15D eine geeignete Anordnung zur Bewegung und Positionierung des Bleches 98 beschrieben werden.
Diesen Diagrammen kann deutlich entnommen werden, dass der Krümmungsradius des Bleches 98 wohl der Krümmung eines vollen Wickelkörpers 3 annähernd gleich, aber doch etwas grösser ist. In den Figuren 15A und 15B nimmt das Blech 98 eine Bereitschaftsstellung seitlich von der Bewegungsbahn der neuen Spulenhülse 11 ein. Das Blech 98 kann aus seiner Bereitschafts- in die Betriebsposition entsprechend Fig. 15C versetzt werden, nachdem die neue Spulenhülse 11 auf dem Weg zur Aufwickelstellung am Blech 98 vorbeigelaufen ist. In Fig. 15C befindet sich das Blech 98 zwischen der neuen Spulenhülse 11 in Aufwickelstellung und dem vollen Wickelkörper 3, der jetzt die Abzugstellung einnimmt. Die Führungskante 96 nimmt an diesem Punkt jedoch eine derartige Stellung im Verhältnis zu dem verkürzten Bewicklungshub des Fadens ein, dass sich der Faden und die Führungskante 96 anfangs nicht berühren. Der Faden ist also anfangs frei, seine Changierbewegung hin und her über den Wickelkörper 3 fortzusetzen. Die Länge des effektiven Bewicklungshubs über den Wickelkörper 3 in Abzugstellung wird aber im Verhältnis zu der in der Aufwickelstellung erzeugten Wickelkörperbreite signifikant reduziert (vergl. dazu Figur 10A). Wenn die Platte 76 aber entsprechend Fig. 14 nach links versetzt wird, entfernt sie den Faden aus der Reichweite des Bewicklungshubs und führt ihn in Berührung mit der Führungskante 96. Entsprechend befindet sich die Führungskante 96 über der Umfangsfläche des vollen Wickelkörpers 3, so dass der Faden nicht nach links über Wickelkörperkante 97 hinauslaufen kann. Die von der Führungskante 96 definierte Position entspricht daher der oben unter Bezugnahme auf Fig. 3 beschriebenen Ebene X. Das Blech 98 hat seinen Zweck erfüllt, sobald die Fadenübergabe zur neuen Hülse 11 stattgefunden hat, worauf es am Ende der Übergabe wieder zur Bereitschaftsstellung rückgestellt werden kann (Fig. 15A und 15B). Jedenfalls muss es wieder die Bereitschaftsstellung einnehmen, ehe der sich auf einer neuen Hülse 11 aufbauende Wickelkörper 3 mit Blech 98 in Betriebsstellung in Berührung kommt.For the time being, the mode of operation of the changing device 217 and its mechanical structure will be described in more detail using the embodiment according to FIGS. 11 and 12. This description facilitates the following description of the thread path and a further separating device, as shown in FIGS. 14 to 24. The changing device 56 described in FIG. 14 works in the same way as the changing device 217.
For the sake of a better overview, in the illustration according to FIG. 11 the sliding plate 225, the spool mandrel 207 with the empty sleeve 211, the changing device 217 with the deflection element 213 attached to it and the full spool 203 are next to one another instead of partially overlapping, as is the case in one view the case is shown from above.
The lower ends of the deflecting element 213 or the two guide rods 231, 232 forming the deflecting element 213 are laterally attached, for example screwed, to the front edge 257 of the changing device 217. The two guide rods 231, 232 arranged exactly in line, which together form the leading edge 237 lie parallel and at a distance to form the guide slot 261 from the set-back central section 259 of the front edge of the changing device 217.
The deflection element 263, which can be displaced parallel and transversely to the deflection element 213, is also fastened on the changing device 217. In the example, the deflection element 263 is an L-shaped sheet which is articulated on the changeover device 217 on its upper edge 264 of the rear leg. The front edge 265 of the rear leg has a deflection nose 267, which lies in the rest position (solid lines) behind the central section 259. In the deflection position (broken lines), the deflection nose 267 projects beyond the section 259 and the guide slot 261 as well as partially also the guide rod 232.
The deflection element 263 is guided from the rest position into the deflection position by means of a linear drive shown schematically in FIG. 11 only by a double arrow P and a guide pin 269 on the changing device 217, which engages in a deflection slot 271 on the lower leg of the deflection element 263. The deflection slot 271 runs parallel to the guide slot 261 over almost its entire length and has a curved section 273 at one end.
The deflection of the thread 214 for transfer to the thread catch slot 223 on the empty sleeve 211 is carried out by moving the deflection element 263 in FIG. 11 from right to left (from the solid line to the position shown in broken lines). Here, the guide pin 269 already causes a pivoting of the deflection plate 263 at the edge 264 at the beginning of the sliding movement and thus a crossing of the Guide slot 261 through the deflection nose 267. This catches the thread 214 and guides it to the left to the end of the guide slot 261. In this way, the first thread length 50 shown in FIG. 13A is formed between the slot 225 and the nose 267. The thread 214, which is now viewed in a stationary manner, forms the end bead 249 on the full bobbin 203. After the thread 214 has still been guided from the sliding plate 225 via the catch slot 223 on the empty sleeve 211 and separated there, the deflection element 263 can be returned to the rest position become.
FIGS. 14 to 24 show a further method according to the invention for transferring the thread 14 from a full bobbin 3 to an empty tube 11 with a separating device shielding the separated thread end and a winding machine suitable for carrying it out.
The changing device 56 is described in the following only as far as is necessary to make the other features of the invention comprehensible. The change device 56 shown includes a support section 58 which is pivotally mounted on the machine frame. The pivot bearing and the machine frame have been omitted in Fig. 14, but are shown schematically in Figs. 15A-15D, where the pivot is indicated by 60 and the frame member by 62. 15A-15D, the bracket 58 can pivot between a retracted position (FIG. 15A) and a fully extended position (FIG. 15B). The other reference numbers that appear in Figures 15A-15D correspond to the numbers used in Figures 1 and 2. The sketch sequence in Figures 15A-15D relates to the respective sections during the Thread transfer:

• -Fig. 15A - the thread winding of a winding body 3 is complete, but the turret 2 has not yet started to rotate;
• -Fig. 15B - the turret has started rotating to bring the full bobbin 3 to the take-off position and the bobbin tube 11 to the take-up position (in contact with roller 8);
• -Fig. 15C - the full bobbin 3 is in the take-off position and the new bobbin tube 11 is in the take-up position, but thread 14 has not yet been turned over to the new tube 11; and
• -Fig. 15D - the thread 14 is placed on the new sleeve 11 and the thread transfer is therefore imminent or has already been completed.

The carrier 58 has at its free end remote from the pivot 60 a rod 64 (FIG. 14) which forms the front edge of the changing device 56 as soon as the carrier 58 is pivoted from the retracted to the extended position. Any suitable drive arrangement can be used to move the changing device 56, e.g. B. the drive arrangement 59 shown generally in FIG. 15B or such as is shown in FIG. 12 with reference number 17. Behind the rod 64 there is a slot-shaped intermediate space 66, ie between the rod 64 and the edge 68 on the carrier 58. The edge 68 of the carrier 58 extends parallel to the rod 64.
The rod or rail 64 is formed as in Figure 11 from two coaxial parts 64A and 64B, which are separated by a gap 70 for the reasons described below. Once the change device 56 from its retracted position (FIG. 15A) to its extended position Position (Fig. 15B) is moved, the thread length extending from the contact roller 8 to the full bobbin 3 (Fig. 15B) is touched by the front edge 72 of the rod 64. At this time, the thread is still guided back and forth over a substantial part of the winding body width by the movement transmitted to it by the laying device 6 (FIG. 2). As soon as the thread aligns along gap 70 during its movement from right to left, as shown in FIG. 14, it is threaded into this gap 70 and passed through this gap into the long space 66 behind the rod 64. The thread is then in contact with the rear edge 68. Since the intermediate space 66 is elongated, the thread can move back and forth freely over the width of the winding body. The changing device 56 can now be retracted somewhat to its retracted position, for example to the position shown in FIG. 15C, in order to deflect the thread 14 out of the way of the new bobbin tube 11 as soon as it approaches the contact roller 8. The thread 14 continues its to-and-fro movement in the long space 66 continuously during this retraction movement, whereby it is guided through the edge 68 or the rear edge 74 of the rod 64, depending on the circumstances. Due to the design of the gap 70, the thread can enter the gap 70 when it is in contact with the leading edge 72 of the rod 64, but not when it is in contact with the rear surface 74 of the rod 64. The thread 14 can consequently only slide into the space 66, but no longer out of it.
When the incoming sleeve 11 has been correctly positioned with respect to the contact roller 8 (Fig. 15C), it can the changing device 56 is again moved in the direction of the new bobbin case 11 into a position in which the thread length between the contact roller 8 and the edge 68 of the changing device 56 can be brought into contact with the new bobbin case 11. Now, the plate 76 mounted on the support section 58 is moved from the position shown in full lines in FIG. 14 to the position in which the end of plate 76 provided with the deflection nose 78 is represented by a dotted line. In order to be able to carry out this movement, the plate 76 is connected to the slide 80, which can be moved with respect to the guide cam 84 and is provided with a slot 82. The guide cam 84 is mounted on the carrier 58 by suitable means (not shown) so that it cannot be moved on the carrier 58. Before the changing device 56 is caused to carry out the actual transfer step shown in FIG. 15D, the slide 80 is positioned with respect to the carrier 58 in such a way that slot 82 assumes the position shown in solid lines in FIG. 14. The cam 84 is thus in a curved portion 86 of slot 82. Once the slider 80 is in this position, the plate 76 is retracted with respect to the rod 64 so that the thread 14 reciprocates in the above mentioned space 66 is not disturbed by the nose 78. The nose 78 is thus completely behind the guide edge 68 already mentioned. During the actual transfer step, the slide 80 is moved to the left with respect to the position shown in solid lines in FIG. 14. The cam 84 then engages in a straight part 88 of the slot 82, which at the end of the movement of the slide 80 assumes the position shown in dotted lines in FIG. 14 Has. The slider 80 is moved forward with respect to the carrier 58 during this movement, in the direction of the rod 64. As a result, the nose 78 moves through the space 66. The nose 78 has an inclined edge 90 and a hook-shaped edge 92. If the thread 14 is to the right of the nose 78 before it runs forward through the space 66, the thread 14 first touches the bevel 90 during its back and forth movement, and then runs past the nose 78 into the space 66, which is located on the left side of the nose 78. A now attempted thread 14 to run back to the right is prevented by the hook-shaped edge 92. On the other hand, if the thread 14 first comes to the left of the nose 78, then it will be caught by the hook-shaped edge 92 as soon as it tries to move towards the right end of the space 66. The nose 78 also has a straight edge 94 to which the edges 90 and 92 adjoin. The thread 14 is initially not retained by the nose 78 and can then pass the nose 78 either to the right or to the left, depending on its initial direction of movement at the time of the first touch. When the thread 14 has been caught by the hook-shaped edge 92, it is deflected by the further movement of the plate 76 into the position indicated by the broken line of the nose 78, whereby the thread 14 extends beyond the winding stroke into a position at 77 is shown in Fig. 14, completely deflected position.
FIG. 14 also shows the thread guide plate 25 mentioned above (see also FIG. 2) in the form of a plate or a plate 25A which is connected to a Slot 25B is provided. When the winding movement is stopped as described in FIGS. 1 and 2, the thread 14 is caught in the slot 25B. As soon as the plate 25A is moved to the left in accordance with FIG. 14, the thread 14 caught in the slot 25B is accordingly moved into a position outside the normal winding stroke, as is shown at 75 in FIG. 14. In this way, the first thread length 50 is formed between the slot 25B and the hook-shaped edge 92, which functionally corresponds to the length 50 in FIGS. 13A and 13B and is at right angles to the longitudinal axis of the new sleeve 11, the outline of which is dashed in FIG. 14 have been shown.
The plate 76, and in particular the nose 78 formed thereon, forms the deflection guide located on the inlet side of a pair of deflection guides which delimit the middle or second thread section 52, as shown in FIG. 3. In the exemplary embodiment of FIG. 14, the lower guide of this pair of guides is not located on the changing device 56, but is brought about by a guide edge 96 on the sheet metal 98 which is as close as possible to the cylindrical outer surface of the full winding body 3. The leading edge 96 is illustrated in its simplest form in FIG. 14. Alternatives will be described with reference to numerals in the following drawings. First, however, a suitable arrangement for moving and positioning the plate 98 will be described with reference to the diagram sequence in FIGS. 15A-15D.
These diagrams clearly show that the radius of curvature of the sheet 98 is approximately the same as the curvature of a full winding body 3, but is somewhat larger. In FIGS. 15A and 15B, the sheet 98 takes a standby position laterally from the path of movement of the new coil sleeve 11. The plate 98 can be moved from its ready position into the operating position according to FIG. 15C after the new coil sleeve 11 has passed the plate 98 on the way to the winding position. In Fig. 15C, the sheet 98 is between the new spool sleeve 11 in the winding position and the full winding body 3, which now assumes the pull-off position. At this point, however, the leading edge 96 assumes such a position in relation to the shortened winding stroke of the thread that the thread and the leading edge 96 do not initially touch. The thread is thus initially free to continue its traversing movement back and forth over the winding body 3. The length of the effective winding stroke over the winding body 3 in the pull-off position is, however, significantly reduced in relation to the winding body width generated in the winding position (cf. FIG. 10A). However, if the plate 76 is moved to the left in accordance with FIG. 14, it removes the thread from the range of the winding stroke and guides it in contact with the guide edge 96. Accordingly, the guide edge 96 is located over the circumferential surface of the full winding body 3, so that the The thread cannot run to the left over the edge 97 of the winding former. The position defined by the leading edge 96 therefore corresponds to the plane X described above with reference to FIG. 3. The plate 98 has served its purpose as soon as the thread transfer to the new sleeve 11 has taken place, whereupon it is reset to the ready position at the end of the transfer can (Figs. 15A and 15B). In any case, it must return to the ready position before the winding body 3, which is built up on a new sleeve 11, comes into contact with the sheet metal 98 in the operating position.

FIG. 16 shows a detail of a somewhat modified exemplary embodiment of the sheet 98 shown in FIG. 14. The modified sheet 98A has a v-shaped guide edge 100. This modification brings about a regulated thread guidance over the surface of the full winding body as soon as the sheet 76 (FIG . 14) occupies its operational position. As a result, the bead, which inevitably forms on the circumferential surface of the winding body 3 after the transfer movement has been set, is influenced in a favorable manner. At the same time, the end position of the thread 14 is tightly limited by the V apex, so that it cannot pass over the end of the winding body 3. The v-shaped leading edge 100 has only a slight inner bevel, but a larger function could be achieved with a larger inner angle, which will now be described with reference to FIG. 17 of a further alternative.
The sheet 98B in FIG. 17 has a bridge section 102 with protrusions 104. Each protrusion 104 has a guide edge 106 which is arranged at a predetermined angle with respect to the mandrel axis. This leading edge 106 continues in a slot 108 which is formed in the region where the projection 104 and the bridge section 102 are connected. There is a large free space 110 between each pair of neighbors 104.
For each thread that is wound simultaneously in the winding device, a protrusion 104 is provided, analogous to the separating element 42 in FIG. 3. As soon as the plate 98B is moved from its standby to the operating position, each thread 14 is received by the respective space 110, so that the thread 14 for the reciprocating movement on the respective one assigned winding body 3 is freely movable. However, as soon as plate 76 is moved to the left in accordance with FIG. 14, each thread 14 is first brought into contact with the leading edge 106 next to its respective space 110 and then passed into slot 108 which opens into this space. The effect of the bead formation on the winding body 3 has already been described with reference to FIG. 16 and will not be repeated here. In this case, the portions of the sheet 98B immediately adjacent to the leading edge 106 cause the severed thread end to be forced into the narrow space between the circumferential surface of the full bobbin 3 and the underside of the sheet 98B, where that thread end would otherwise be influenced by the Centrifugal force would snap outwards. The sheet 98B thus behaves like a shield in order to prevent the bobbin 3 newly formed on the bobbin tube 11 in the winding position from being disturbed by the cut thread end.
The shielding function described above with reference to FIG. 17 could also be achieved with alternative means, as will now be briefly described with reference to FIGS. 18 and 19.
The sheet 98C shown in FIG. 18 has a leading edge 96 with the same functions that have already been described with regard to the leading edge 96 with reference to FIG. 14. The sheet 98C itself cannot perform a shielding function since the cut thread end is not passed into the space between the sheet 98C and the peripheral surface of the winding body 3. Instead, the desired effect can be achieved by arranging an auxiliary plate 112 on the back of the sheet 98C, which is shown schematically at 114 Movement organ shown can be extended from the retracted position shown in solid lines in Fig. 18 to the position dashed in there. In this extended position, the separation function is essentially performed by the auxiliary plate 112 in the manner already described with reference to FIG. 17. The sheet 98D in FIG. 19 also has a simple leading edge 96 that is similar to the edge shown and described with reference to FIG. 14. The sheet 98D sits on a bridge section 116, which can be moved back and forth with respect to the mandrel in the axial direction (by means not shown) in accordance with the two-sided arrow 118. The plate 98D can thus be moved from the edge 96 according to FIG. 19 to the right after the completion of the deflection function in a position in which the plate can perform this shielding function as described with reference to FIG. 17 (in FIG. 19 this is shown by the dashed position shown for edge 96). The sheet 98D can then be returned to the position entered in solid lines and is then ready for the next transfer, for which the leading edge 96 must initially be in the position which is shown in solid lines.
The invention is not restricted to details of the exemplary embodiments that appear in the drawings. The sheet 98 is shown in an operating position as close as possible to the full winding body 3 when it is in the pull-off position. The expression "full winding body 3" is to be understood here as the largest winding body that can be wound on the machine shown. With this arrangement the best thread geometry is achieved, that is possible (minimum total contact angle with the deflection guides). If a compromise solution can be accepted, the sheet can be removed somewhat from the surface of the winding body 3.
The plate 98 does not necessarily have to be provided with a curvature, and the radius of curvature of an arc plate does not have to match the radius of the full winding body 3.
FIGS. 20 and 21 illustrate an exemplary embodiment in which the bent plate 98B in FIG. 21 is replaced by a flat plate 98E. The path of movement of the sheet 98E in its operating position changes accordingly, as will be described below with specific reference to FIGS. 20 and 21. The reference numerals used in FIGS. 20 and 21 correspond as far as possible to the numerals in FIG. 16, with only a brief discussion of the corresponding parts.
FIG. 20 is a schematic perspective view of four full bobbins 3 in the pull-off position. The mandrel and the sleeves seated on it have been omitted in the figure because they have no influence on the constructions of the embodiment. The flat sheet 98E is located over the full bobbins 3, specifically between these bobbins 3 and the sleeves 11 in the winding position (not shown in FIG. 20). This sheet 98E has a bridge section 102, four forward-projecting fingers 104 (one finger per winding body 3), four intermediate spaces 110 (one per thread) and four slots 108 (which open into the respective space 110). Sheet 98E is moved on straight rails 120 to the operating position shown in FIG. 20, as will now be described with reference to FIG. 21.

• i) Die Schienen 120 bleiben während des Aufspulens, d.h. während der Bildung eines Wickelkörpers 3 auf einem Dorn in der Aufwickelstellung, vorwiegend in ihrer eingefahrenen Stellung und die Schieber 122 in ihrer Bereitschaftsstellung, wie es in Fig. 21 eingestrichelt worden ist,
• ii) während einer Fadenübergabe werden die Träger 124 und die Schienen 120, nachdem die neuen Hülsen 11 eine kritische Stellung überwunden haben, so dass sich das Blech 98E und die Hülsen 11 nicht behindern können, auf der Welle 126 geschwenkt, damit die Schienen 120 in die Betriebsstellung kommen, obgleich die Schieber 122 und das Blech 98E auf den Schienen 120 immer noch ihre Bereitschaftsposition einnehmen,
• iii) dann werden die Schieber 122 und das Blech 98E aus ihrer Bereitschafts- in die Betriebsstellung bewegt.

Der Bewegungsablauf wird umgekehrt, um die Schienen 120 und Schieber 122 in ihre eingefahrene Bereitschaftsposition zurückzusetzen, sobald die Spulen 3 stillstehen oder zumindest derart langsam drehen und die Abschirmfunktion überflüssig machen. Es ist zu beachten, dass sich die Wickelkörper 3 und die Schienen 120 nicht stören, weil sich die Schienen 120 ausserhalb des von den Wickelkörpern 3 in Abzugstellung beanspruchten Raums befinden.
Den Figuren 20 und 21 kann deutlich entnommen werden, dass die äussere Schiene 120 vor der vorderen Stirnfläche des Wickelkörpers 3 am stirnseitigen Ende des Dornes (siehe auch Fig. 1) positioniert ist, während sich die innere Schiene 120 dementsprechend hinter der hinteren Stirnfläche des Wickelkörpers 3 am Innenende des Dornes befindet. Das Blech 98E erstreckt sich ohne zusätzliche Halterung zwischen den am inneren und äusseren Dornende befindlichen Schiebern 122. Die bei 128 in Fig. 21 ersichtliche Versteifungsrippe kann zur Verstärkung des Brückenabschnittes 102 des Bleches herangezogen werden, um das Durchhängen im Mittelteil des Bleches (zwischen den zwei Schiebern) zu reduzieren. Diese Rippe 128 wurde in Fig. 20 ausgelassen, um diese Zeichnung zu vereinfachen. Die Rippe 128 erstreckt sich von einem zum anderen Ende des Brückenabschnittes 102.
Das Blech 98E hat im wesentlichen die gleiche Funktion wie das Blech 98B (Fig. 17), weshalb von einer weiteren, detaillierten Beschreibung abgesehen wird. Es ist viel leichter, das Blech, da es flach ist, genau durch die äusserst kleine Spalte zwischen den Oberflächen der vollen Wickelkörper 3 und den Oberflächen der neuen Hülsen 11 zu führen und trotzdem einen ausreichenden Spielraum für Fehler an jeder Seite zu wahren. Andererseits haben die Fadenführungskanten 106 am Blech 98E in den Ausführungsbeispielen der Figuren 20 und 21 - verglichen mit dem Ausführungsbeispiel von Fig. 17 - einen im Durchschnitt etwas grösseren Abstand von den Wickelkörpern 3. Mit dem Ausführungsbeispiel in den Figuren 20 und 21 kann der gesamte Ablenkwinkel daher nicht so stark reduziert werden, wie es für das Ausführungsbeispiel von Fig. 17. möglich ist. Der Unterschied (in der Grössenordnung von 2°- 5° gegenüber einer Gesamtreduktion von 85°- 95° im Vergleich mit den dem vorhergehenden Stand der Technik entsprechenden Systemen) ist aber nicht gross, so dass die Vorteile einer geraden Bewegungsbahn jeden möglichen Nachteil in dieser Hinsicht übertreffen.
Ein gewisser weiterer Vorteil kann durch eine Krümmung der Hinterflanke des Bleches 98E in Anlehnung an die Krümmung der Aussenfläche des Wickelkörpers 3 erzielt werden. Dafür muss an der geraden Bewegungsbahn nichts geändert werden, da die Hinterflanke des Bleches (d.h. der Brückenabschnitt und der jeweils unmittelbar folgende Abschnitt des Fingers 104) nicht durch den vorerwähnten engen Spalt geht. Diese Alternative ist gewöhnlich aber nicht erforderlich, da sie nur zu einer geringfügigen, weiteren Verbesserung der Systemgeometrie führt, was durch die schematische Darstellung des Fadenwegs in Fig. 21 veranschaulicht wird. Der Faden 14 wird hier in dem Moment gezeigt, in dem er vom Fangschlitz der neuen Hülse 11 aufgegriffen wird. Es ist ersichtlich, dass sich der in diesem Zeitpunkt operative Abschnitt des Bleches 98E sehr nahe an der Oberfläche des Wickelkörpers 3 befindet, wenn man einen Sicherheitsspielraum berücksichtigt, so dass die Krümmung der Hinterflanke des Bleches nur zu einer geringfügigen weiteren Verbesserung führen könnte.
Der grössere Abstand zwischen der Vorderkante des Bleches 98E und des Wickelkörpers 3 im Vergleich mit dem entsprechenden Abstand des Bleches 98B ist ein positiver Vorteil. Er hat eine "Trichterwirkung", durch die das geschnittene Fadenende auf dem vollen Wickelkörper 3 unter jeden Finger 104 geleitet wird, wodurch die Neigung des Fadens, sich mit jeder Umdrehung des Wickelkörpers 3 um die vordere Fingerkante zu wickeln, reduziert wird. Zur Auslösung der oben beschriebenen Bewegungen können verschiedene Mittel eingesetzt werden. Die Schwenkbewegungen der Träger 124 werden am besten durch (nicht abgebildete) Einheiten mit Kolben und Zylindern zwischen dem Maschinenrahmen und den Trägern bewirkt. Vorzugsweise sollte für jede Träger- und Schienenkombination eine Einheit dieser Art vorgesehen werden. Die Schieber 122 können jeweils durch (nicht abgebildete) Einheiten mit Kolben und Zylindern den Schienen entlang bewegt werden, die auf jeder Schienenstruktur beispielsweise parallel montiert sind. Andererseits kann jede Schiene 120 rundherum mit einer endlosen Zugleine versehen werden, die in Drehrollen läuft, wobei eine Strecke der Zugleine mit dem zugehörigen Schieber verbunden werden kann, um diesen über die Zugleinenstrecke hin- und herzubewegen. Bei einem weiterentwickelten System können die Schieber 122 und die Schienen 120 als Linearmotoren ausgeführt werden. In Figur 22 wird noch eine andere Möglichkeit dargestellt. Jede Schiene 120 wird als Hohlkörper 130 ausgeführt, der bei einer Kolben-Zylinder-Einheit als Zylinder dient, wobei der Kolben durch Ziffer 132 bezeichnet wird. An jedem Ende des Zylinders 130 befinden sich Flüssigkeitseinlassschlitze 134, durch welche die eine oder andere Kammer an den Seiten des Kolbens wahlweise unter Druck gesetzt werden kann, um diesen zu veranlassen, im Zylinder hin- oder herzulaufen. Der Kolben 132 ist mit Permanentmagneten 136 ausgerüstet, und die Wandungen von Körper 130 bestehen aus einem Material, durch welches das Kraftfeld von Magneten 136 sich zumindest bis zu dem dazugehörigen Schieber 122 ausbreiten kann. Der Schieber 122 besteht aus einem bzw. enthält ein Material, das durch die Kraftfelder der Magneten 136 derartig beeinflusst wird, dass der Schieber 122 dem Rück- und Vorwärtslauf des Kolbens 132 im Zylinder 130 folgt.
Eine nicht so kostspielige Alternative kann aufgrund einer Hebelanordnung gebildet werden, die von Fig. 23 schematisch veranschaulicht wird. In diesem Fall tragen Schienen 120 zwischen ihnen eine rechtwinklige zu den festen Schienenende verlaufende Stange 140, auf der zwei Schlitten 142 montiert sind. Je ein Hebelpaar 144, 146 ist gelenkig mit jedem Schlitten 142 und dem Ende der benachbarten Schiene 120 verbunden. Jedes Hebelpaar besteht aus einem Langhebel 144, der an einem Ende drehbar mit dem Schlitten 142 verbunden ist, sowie einem kurzen Hebel 146, der an einem Ende drehbar mit der Schiene 120 verbunden ist. Der kurze Hebel 146 ist gelenkig mit dem langen Hebel 144 verbunden, um zwischen seinen Enden ein Scherenkreuz zu bilden. Das von Schlitten 142 abweisende Ende von Hebel 144 ist gelenkig mit dem Blech 98E verbunden.
Eine doppelt wirkende Kolben-Zylinder-Einheit 148 wird zwischen einem der Schlitten 142 und einem Widerlager 150, das in der Mitte von Stange 140 befestigt ist, eingesetzt. Eine endlose Zugleine 152 erstreckt sich um zwei Rollen 153, von denen eine an einem Ende einer der Schienen 120 und die andere dementsprechend an der anderen Schiene 120 befestigt ist. Ein Abschnitt der Zugleine 152 ist an einem der Schlitten 142 und der andere Abschnitt am anderen Schlitten 142 angeschlossen, wie bei 149 schematisch veranschaulicht wird. Beim Aus-/Einfahren der Einheit 148 wird das Scherenkreuz veranlasst, das Blech 98E auf den Schienen 120 hin- und herzubewegen.
Es gibt eine noch andere Alternative (nicht abgebildet), bei der jede Schiene 120 als Zahnstangenmechanismus ausgebildet ist. Auch das Blech 98E kann an jeder Kante eine Zahnstange tragen. Das Ritzel eines jeden Zahnstangenmechanismus ist auf einem entsprechenden Schlitten angeordnet, der auf der Schiene (Zahnstange) 120 entlangläuft. Dieses Ritzel greift sowohl in die Schiene (Zahnstange) ein, auf der es läuft als auch in die Zahnstange auf der entsprechenden Kante des Bleches 98E. Für jeden Zahnstangenmechanismus wird eine doppelt wirkende Kolben-Zylinder-Einheit vorgesehen, um die Schlitten auf Schienen 120 hin- und herzubewegen. Jeder Zahnstangenmechanismus kann so angeordnet werden, dass das Blech 98E pro Bewegungsstreckeneinheit des Schlittens sich auf den Schienen 120 um zwei Einheiten bewegt.
Aus einer Betrachtung von Fig. 15E geht hervor, dass der Grundsatz des unter Bezugnahme auf Fig. 21 beschriebenen Bewegungs-/Führungssystems genauso für die Ausführungsbeispiele gilt, die unter Bezugnahme auf die Figuren 9A-9H und 15A-15D beschrieben wurden. In Fig. 15E befindet sich eine gebogene Schiene 120A, die einer der geraden Schienen 120 in Figuren 20 oder 21 entspricht. Die Schiene 120A kann um eine Welle 126A zwischen einer in Vollinien dargestellten Betriebsstellung und einer gestrichelt dargestellten eingefahrenen Stellung geschwenkt werden. Ein Schieber 122 kann zwischen einer ausgefahrenen Stellung (siehe Fig. 15E) und einer Bereitschaftsstellung (nicht abgebildet, aber neben Welle 126A) auf der Schiene 120A entlang bewegt werden. Das Blech 98 ist am Schieber 122 befestigt. Die abgebildete Anordnung wird am gegenüberliegenden Ende des Dornes wiederholt. Die Teile sind derart angeordnet, dass - wenn sich die Schienen 120A in ihrer Betriebsstellung befinden - das Blech 98 durch die Bewegung der Schieber 122 auf den Schienen auf einer zur Achse der in Abzugstellung befindlichen Wickelkörper 3 konzentrischen Bahn geführt wird. Diese Bahn verläuft mit einem geringen Abstand zu den Aussenflächen der Wickelkörper 3.
Falls das Blech 98E axial zum Dorn bewegt werden soll, nachdem die Fäden von den neuen Hülsen aufgefangen worden sind (um, wie vorstehend beschrieben, die Abschirmwirkung zu erhöhen), kann dies z. B. dadurch bewerkstelligt werden, indem der Träger 124 und die Schienen 120 entlang der Welle 126 verschoben werden. Die Träger selbst könnten z.B. auf einem Schieber (nicht abgebildet) montiert werden, der sowohl axial entlang der Welle 126 als auch um sie herum bewegt werden kann. Dafür müsste dann natürlich ein zusätzlicher Abstand zwischen der Schiene 120 am Vorderende des Dornes und der entsprechenden Endfläche des äusseren Wickelkörpers in Abzugstellung berücksichtigt werden, damit die beabsichtigte Bewegung nicht behindert wird.
In Fig. 13A wird der Fadenweg im Übergabezeitpunkt von der Seite der Aufspulvorrichtung in Richtung von Pfeil A in Fig. 2 dargestellt. Statt den Faden entlang der zweiten Wegstrecke 52 abzulenken, die praktisch parallel zur Achse des Dornes liegt, sieht diese Erfindung eine Wegstrecke 52A (in gestrichelten Linien) vor, die sich entsprechend der Ansicht in Fig. 13A in einem Winkel zur Dornachse nach unten erstreckt. Hierdurch kann der Umschlingungswinkel des Fadens an den Ablenkpunkten 33 und 31 beträchtlich reduziert werden. Weiterhin ist zu beachten, dass die Länge der dritten Wegstrecke 54 beträchtlich gekürzt wird. Die Grenze des Umschlingungswinkels an der Position 31 wird erreicht, wenn das Risiko besteht, dass die entsprechende Ablenkführung mit dem vollen Wickelkörper 3 kollidiert. Diese Grenze wird erreicht, wenn sich der Ablenker so nahe wie möglich der Oberfläche des vollen Wickelkörpers 3 genähert hat oder wenn der Abstand zwischen dem Ablenkführungspaar, durch welches die zweite Strecke von Faden 52A definiert wird, ein Höchstmass erreicht hat.
Es ist mit Blick auf Fig. 13A ebenfalls zu beachten, dass der zwischen dem Ablenkführungspaar, das die zweite Strecke von Faden 52A bildet, gegebene Abstand d2 (gemessen entlang einer Linie, die parallel oder wesentlich parallel zu der Ebene verläuft, in der sich die Drehachsen der Dorne 5, 7 befinden) signifikant grösser ist als der entsprechende Abstand dl zwischen den Ablenkführungen 31, 33, die in der in Figuren 2 und 3 dargestellten Vorrichtung die zweite Fadenstrecke 52 definieren. Weiterhin ist der Abstand zwischen der unteren Ablenkführung jenes Paares, das die zweite Strecke von Faden 52A abgrenzt, und der Aussenfläche des vollen Wickelkörpers wesentlich kleiner als der Abstand d2, und zwar weil die untere Ablenkführung während der Fadenübergabe dem vollen Wickelkörper so nahe wie möglich kommt. Im Falle der Vorrichtung in Figuren 2 und 3 ist der Abstand zwischen der unteren Ablenkführung 31 und der Aussenfläche des vollen Wickelkörpers grösser als Abstand d1.
Eine weitere Verbesserung kann durch Beachtung der Fadenweggeometrie aus der Sicht von der Vorderseite der Aufspulvorrichtung erzielt werden. Diese Geometrie wird in Fig. 15D und mit mehr Details in Fig. 24 illustriert, wo die Kontaktwalze, die leere Hülse und der volle Wickelkörper wieder durch Referenzziffern 8, 11 und 3 bezeichnet werden. Die jeweiligen Drehrichtungen werden durch gebogene Pfeile verdeutlicht. Die gestrichelte SMT-Linie bezieht sich auf eine Sicherheitszone um die neue Hülse 11. In diese Sicherheitszone sollte kein Fadenablenkelement eindringen, da sonst eine Kollisionsgefahr mit der Hülse 11 besteht. Der Abstand der Sicherheitszonengrenze von der Oberfläche der neuen Hülse 11 richtet sich offensichtlich nach der Fabrikations- und Montagepräzision jener Teile, durch welche die relativen Positionen der Hülse und des Ablenkelements bestimmt werden, d.h. also nach den akzeptablen Toleranzen und demzufolge den akzeptablen Produktionskosten. Die gestrichelte SMP-Linie bezeichnet eine ähnliche Sicherheitszone um den vollen Wickelkörper 3.
Die von Hülse 11 aufzufangende Fadenstrecke wird bei 50 veranschaulicht (siehe auch Fig. 13a). Die Ablenkelemente 64, 78 werden so nahe als möglich an der Sicherheitszone SMT dargestellt. Ihre Winkelstellungen um die Achse der Hülse 11 werden durch den für ein zuverlässiges Auffangen durch diese Hülse erforderlichen Umschlingungswinkel W bestimmt. Die eingezeichneten Drehrichtungen beziehen sich auf das sogenannte Gegenrotationsfangen, d.h. Fadenstrecke 50 bewegt sich im Zeitpunkt des Auffangens in entgegengesetzter Richtung zur Oberfläche der Hülse 11. Diese Auffangweise setzt einen Umschlingungswinkel W von mindestens 25° zum Auffangen in einen Hülsenschlitz (z.B. der in US-Patent 4,969,607 dargestellten Art) und von mindestens 30° voraus, wenn das Auffangen durch eine im Dorn integrierte Fangvorrichtung vorgenommen werden muss (z.B. entsprechend US-Patente 4,641,793 oder 4,817,896). Die Fadenstrecke 52A (vergleiche mit Fig. 13A) verläuft in einem Winkel von den Ablenkelementen 64, 78 nach unten bis zur Oberfläche des Wickelkörpers 3, auf dem der Faden bis zum Fangmoment weitergewickelt wird. Das nahe der Wickelkörperoberfläche befindliche Blech (z.B. Blech 98E in Fig. 20) kann so geformt werden, um eine weitere Ablenkung des Fadens, von der Front der Aufspulvorrichtung aus betrachtet, zu vermeiden. Der Schlitz 108 (Fig. 20) ist derart tief, dass die Fadenstrecke 52A zu der Oberfläche des Wickelkörpers und zu den Führungskanten der beiden Elemente 64, 78 tangential verläuft. Anders gesagt, der Faden beschreibt eine "Spirale" um die Führung 64. Der Umschlingungswinkel eines jeden Ablenkelements 64, 78 wird am besten so gering als möglich gehalten, wofür diese Elemente der Sicherheitszone SMT im Fangzeitpunkt so nahe als möglich angeordnet werden sollten. Diese Einstellung entspricht auch einer Betriebsposition der Vorrichtung 58 (Figuren 15D und 21), in der das Kollisionsrisiko mit dem unteren Führungsblech 98 am geringsten ist.
Die untere Ablenkführung des Ablenkführungspaars, das die zweite Strecke von Faden 52A eingrenzt, ist unabhängig und separat von der oberen Ablenkführung desselben Paars.The sheet 98E is mounted on a slider 122 at each end (only one slider of this type is shown in FIGS. 20 and 21), and the two slides each move on rails 120. Each rail 120 is supported at one end 124 (Fig. 21) which can rotate about a shaft 126 mounted on the machine frame (not shown). The carrier 124 in FIG. 21 is illustrated in the retracted position, in which the rail 120 stands vertically, as indicated by the dashed line. If the carrier 124 is pivoted from the position shown in FIG. 21 by a left turn, its rail 120 can be moved into the operating position shown in solid lines. A suitable drive arrangement can be used to drive the carrier 124, such as the drive arrangement in FIG. 21. The arrangement can be provided with a stop in order to pivot the pivoting movement of the carrier 124 when it runs into the operating or retracted position limit. The slide 122 on each rail 120 can also be moved on its respective rail from a standby position (in FIG. 21 on the left rail end) to an extended position (shown in solid lines on the right rail end in FIG. 21). A suitable drive arrangement, such as the drive arrangement 123 shown in FIG. 21, can be used to move the slides back and forth between the ready and extended positions. The sequence of movements behaves as follows:

• i) The rails 120 remain predominantly in their retracted position and the slides 122 in their winding position, ie during the formation of a winding body 3 on a mandrel in the winding position Standby position, as has been dashed in in FIG. 21,
• ii) during a thread transfer, the carriers 124 and the rails 120 are pivoted on the shaft 126 after the new sleeves 11 have overcome a critical position so that the sheet 98E and the sleeves 11 cannot be obstructed, so that the rails 120 in come to the operating position, although the slides 122 and the sheet 98E on the rails 120 are still in their standby position,
• iii) then the slide 122 and the plate 98E are moved from their standby into the operating position.

The sequence of movements is reversed in order to reset the rails 120 and slides 122 into their retracted standby position as soon as the coils 3 stand still or at least rotate so slowly and make the shielding function superfluous. It should be noted that the winding bodies 3 and the rails 120 do not interfere because the rails 120 are located outside the space occupied by the winding bodies 3 in the pull-off position.
It can be clearly seen from FIGS. 20 and 21 that the outer rail 120 is positioned in front of the front end face of the winding body 3 at the front end of the mandrel (see also FIG. 1), while the inner rail 120 is accordingly behind the rear end face of the winding body 3 located at the inner end of the mandrel. The sheet 98E extends without additional support between the sliders 122 located on the inner and outer mandrel ends. The stiffening rib visible at 128 in FIG. 21 can be used to reinforce the bridge section 102 of the sheet in order to prevent sagging in the middle part of the sheet (between the two sliders). This rib 128 has been omitted in Fig. 20 to simplify this drawing. The rib 128 extends from one end to the other end of the bridge section 102.
The plate 98E has essentially the same function as the plate 98B (FIG. 17), for which reason a further detailed description is not provided. It is much easier to guide the sheet, since it is flat, precisely through the extremely small gaps between the surfaces of the full winding bodies 3 and the surfaces of the new sleeves 11 and still maintain sufficient scope for errors on each side. On the other hand, the thread guide edges 106 on the sheet 98E in the exemplary embodiments in FIGS. 20 and 21 have an average somewhat greater distance from the winding bodies 3 compared to the exemplary embodiment in FIG. 17. With the exemplary embodiment in FIGS. 20 and 21, the entire deflection angle can be therefore not be reduced as much as is possible for the embodiment of FIG. 17. The difference (in the order of magnitude of 2 ° - 5 ° compared to a total reduction of 85 ° - 95 ° in comparison with the systems corresponding to the prior art) is not great, so that the advantages of a straight trajectory have every possible disadvantage in this Outperform.
A certain further advantage can be achieved by a curvature of the rear flank of the sheet 98E based on the curvature of the outer surface of the winding body 3. For this, nothing needs to be changed on the straight movement path, since the rear flank of the sheet (ie the bridge section and the immediately following section of the finger 104) does not pass through the aforementioned narrow gap. This alternative is usually not necessary because it is only leads to a slight, further improvement in the system geometry, which is illustrated by the schematic representation of the thread path in FIG. 21. The thread 14 is shown here at the moment when it is picked up by the catch slot of the new sleeve 11. It can be seen that the section of sheet 98E which is operative at this point in time is very close to the surface of winding body 3 if a safety margin is taken into account, so that the curvature of the rear flank of the sheet could only lead to a slight further improvement.
The greater distance between the front edge of the sheet 98E and the winding body 3 in comparison with the corresponding distance of the sheet 98B is a positive advantage. It has a "funnel effect" through which the cut thread end on the full bobbin 3 is passed under each finger 104, thereby reducing the tendency of the thread to wrap around the front finger edge with each revolution of the bobbin 3. Various means can be used to trigger the movements described above. The pivotal movements of the brackets 124 are best accomplished by means of pistons and cylinders (not shown) between the machine frame and the brackets. A unit of this type should preferably be provided for each carrier and rail combination. The slides 122 can each be moved along the rails by units (not shown) with pistons and cylinders, which are mounted in parallel on each rail structure, for example. On the other hand, each rail 120 can be provided with an endless towing line all around, which runs in rotating rollers, one stretch of the towing line with the associated one Slider can be connected to move it back and forth across the towing line. In a further developed system, the slides 122 and the rails 120 can be designed as linear motors. Another possibility is shown in FIG. Each rail 120 is designed as a hollow body 130, which serves as a cylinder in a piston-cylinder unit, the piston being designated by number 132. At each end of the cylinder 130 there are liquid inlet slots 134 through which one or the other chamber on the sides of the piston can be selectively pressurized to cause it to run back and forth in the cylinder. The piston 132 is equipped with permanent magnets 136, and the walls of the body 130 are made of a material through which the force field of the magnets 136 can spread at least up to the associated slide 122. The slide 122 consists of or contains a material which is influenced by the force fields of the magnets 136 in such a way that the slide 122 follows the reverse and forward movement of the piston 132 in the cylinder 130.
A not so expensive alternative can be formed due to a lever arrangement, which is schematically illustrated by FIG. 23. In this case, rails 120 carry between them a right-angled bar 140 extending to the fixed rail ends, on which two carriages 142 are mounted. Each pair of levers 144, 146 is articulated to each carriage 142 and the end of the adjacent rail 120. Each pair of levers consists of a long lever 144 which is rotatably connected to the carriage 142 at one end and a short lever 146 which is rotatably connected to the rail 120 at one end. The short lever 146 is articulated with the Long lever 144 connected to form a scissor cross between its ends. The end of lever 144, which faces away from carriage 142, is connected in an articulated manner to sheet metal 98E.
A double-acting piston-cylinder unit 148 is inserted between one of the carriages 142 and an abutment 150, which is fastened in the middle of rod 140. An endless pull line 152 extends around two rollers 153, one of which is attached to one end of one of the rails 120 and the other correspondingly to the other rail 120. One section of the pull line 152 is connected to one of the carriages 142 and the other section to the other carriage 142, as schematically illustrated at 149. When the unit 148 is extended / retracted, the scissors cross is caused to move the plate 98E back and forth on the rails 120.
There is yet another alternative (not shown) in which each rail 120 is a rack and pinion mechanism. The 98E sheet can also carry a rack on each edge. The pinion of each rack and pinion mechanism is arranged on a corresponding slide that runs along the rail (rack) 120. This pinion engages both in the rail (rack) on which it runs and in the rack on the corresponding edge of the plate 98E. A double acting piston-cylinder unit is provided for each rack and pinion mechanism to reciprocate the slides on rails 120. Each rack and pinion mechanism can be arranged so that the sheet 98E moves two units per rail unit of travel on the rails 120.
15E shows that the principle of that described with reference to FIG. 21 Movement / guidance system also applies to the exemplary embodiments which were described with reference to FIGS. 9A-9H and 15A-15D. 15E there is a curved rail 120A which corresponds to one of the straight rails 120 in FIGS. 20 or 21. The rail 120A can be pivoted about a shaft 126A between an operating position shown in solid lines and a retracted position shown in broken lines. A slider 122 can be moved between an extended position (see FIG. 15E) and a ready position (not shown, but next to shaft 126A) on the rail 120A. The plate 98 is attached to the slide 122. The arrangement shown is repeated at the opposite end of the mandrel. The parts are arranged in such a way that - when the rails 120A are in their operating position - the sheet 98 is guided by the movement of the slides 122 on the rails on a path which is concentric with the axis of the winding body 3 in the pull-off position. This path runs at a short distance from the outer surfaces of the winding body 3.
If the plate 98E is to be moved axially to the mandrel after the threads have been caught by the new sleeves (in order to increase the shielding effect, as described above), this can e.g. B. be accomplished by moving the carrier 124 and the rails 120 along the shaft 126. For example, the brackets themselves could be mounted on a slider (not shown) that can be moved both axially along and around shaft 126. An additional distance between the rail 120 at the front end of the mandrel and the corresponding end face of the outer winding body in the pull-off position would then of course have to be taken into account so that the intended movement is not hindered.
FIG. 13A shows the thread path at the time of transfer from the side of the winding device in the direction of arrow A in FIG. 2. Instead of deflecting the thread along the second path 52, which is practically parallel to the axis of the mandrel, this invention provides a path 52A (in dashed lines) that extends downward at an angle to the mandrel axis as viewed in FIG. 13A. As a result, the wrap angle of the thread at the deflection points 33 and 31 can be considerably reduced. It should also be noted that the length of the third route 54 is shortened considerably. The limit of the wrap angle at position 31 is reached when there is a risk that the corresponding deflection guide collides with the full winding body 3. This limit is reached when the deflector has come as close as possible to the surface of the full bobbin 3 or when the distance between the pair of deflection guides, by which the second distance of thread 52A is defined, has reached a maximum.
It should also be noted with reference to Figure 13A that the distance d2 given between the pair of deflection guides forming the second stretch of thread 52A (measured along a line that is parallel or substantially parallel to the plane in which the Axes of rotation of the mandrels 5, 7) are significantly larger than the corresponding distance dl between the deflection guides 31, 33, which define the second thread section 52 in the device shown in FIGS. 2 and 3. Furthermore, the distance between the lower deflection guide of that pair that is the second distance from Delimits thread 52A, and the outer surface of the full winding body is substantially smaller than the distance d2, because the lower deflection guide comes as close as possible to the full winding body during the thread transfer. In the case of the device in FIGS. 2 and 3, the distance between the lower deflection guide 31 and the outer surface of the full winding body is greater than distance d1.
A further improvement can be achieved by observing the thread path geometry from the front of the winding device. This geometry is illustrated in FIG. 15D and in more detail in FIG. 24, where the contact roller, the empty sleeve and the full bobbin are again identified by reference numerals 8, 11 and 3. The respective directions of rotation are indicated by curved arrows. The dashed SMT line refers to a safety zone around the new sleeve 11. No thread deflecting element should penetrate into this safety zone, since otherwise there is a risk of collision with the sleeve 11. The distance of the safety zone boundary from the surface of the new sleeve 11 obviously depends on the manufacturing and assembly precision of those parts by which the relative positions of the sleeve and the deflecting element are determined, that is to say the acceptable tolerances and consequently the acceptable production costs. The dashed SMP line denotes a similar safety zone around the full winding body 3.
The thread section to be caught by sleeve 11 is illustrated at 50 (see also FIG. 13a). The deflection elements 64, 78 are shown as close as possible to the security zone SMT. Your angular positions around the axis of the sleeve 11 are by the for a reliable collection determined by this sleeve wrap angle W. The directions of rotation shown relate to the so-called counter-rotation catching, ie thread section 50 moves in the opposite direction to the surface of the sleeve 11 at the time of the catching. This catching method sets a wrap angle W of at least 25 ° for catching in a sleeve slot (e.g. that in US patent 4,969,607) and at least 30 ° ahead if the catch must be carried out by a catch device integrated in the mandrel (for example in accordance with US Patents 4,641,793 or 4,817,896). The thread section 52A (compare with FIG. 13A) runs at an angle from the deflection elements 64, 78 down to the surface of the winding body 3, on which the thread is wound up to the catching torque. The sheet near the bobbin surface (eg sheet 98E in Fig. 20) can be shaped to avoid further deflection of the thread when viewed from the front of the winder. The slot 108 (FIG. 20) is so deep that the thread section 52A is tangential to the surface of the winding former and to the leading edges of the two elements 64, 78. In other words, the thread describes a "spiral" around the guide 64. The wrap angle of each deflecting element 64, 78 is best kept as small as possible, for which purpose these elements of the safety zone SMT should be arranged as close as possible at the time of catching. This setting also corresponds to an operating position of the device 58 (FIGS. 15D and 21) in which the risk of collision with the lower guide plate 98 is lowest.
The lower deflection guide of the pair of deflection guides which delimits the second stretch of thread 52A is independent and separate from the upper deflection guide of the same pair.

Therefore, the distance between the two deflection guides can be maximized because the respective deflection guides can be moved independently of one another during their movement from the retracted to the operating position and can be positioned near the full winding body 3 and the empty bobbin tube 11.

The principles of preferred embodiments and modes of operation of the present invention have been described above. However, the invention to be protected should not be construed to be limited to the specifically disclosed embodiments. Furthermore, the above-described embodiments are to be regarded as illustrative rather than restrictive. Variations and changes may be made by others and equivalents may be used without departing from the spirit of the present invention. It is therefore expressly intended that this invention encompass all combinations, variations, changes and equivalents of this type, which are included in the spirit and scope of the present invention as defined in the claims.

Claims (35)

Automatic winding machine for winding a thread on an empty bobbin tube, with a changing device for transferring the thread running to the full bobbin to an empty tube, with a plurality of deflecting guides which deflect the thread during the transfer when a full bobbin from the winding a take-off position is set and an empty tube is brought into the winding position, characterized in that deflection guides act on the thread during the transfer in order to form at least a first, a second and a third thread path and in that the first thread path with respect to the longitudinal axis of the empty Sleeve is arranged at a predetermined angle to enable the thread to be caught on the empty sleeve or on the mandrel, while the second thread stretch extends between the first and third thread stretch and the third thread stretch in the direction of thread movement from the last of the deflection guides to the surface of the full bobbin is sufficient, the second thread path extending obliquely from a point near the empty tube to a point near the surface of the full bobbin at the time of transfer. Winding machine according to claim 1, characterized in that to minimize the contact angle between the thread and the deflection guides the latter are arranged as close as physically possible to the full bobbin and the empty tube. Winding machine according to claim 1, characterized in that the second thread section is determined by an upper deflection guide located closer to the empty tube and a lower deflection guide located closer to the full bobbin, the position of the upper deflection guide delimiting the first thread section during the thread transfer and the lower deflection guide is arranged so that it is as close as possible to the surface of the full spool at the time of the changeover, and the lower deflection guide is movable between a standby and an operating position and takes the latter position as soon as a full spool approaches the pull-off position and returns to the standby position at the latest when the lower deflection guide would otherwise disrupt the winding of the thread on the empty tube. Winding machine according to claim 3, characterized in that the lower deflection guide has a curved element. Winding machine according to claim 4, characterized in that the curved element moves between the standby and the operating position in a curved path, the radius of curvature of which is only slightly larger than the radius of curvature of the surface of the full bobbin in the pull-off position. Winding machine according to claim 3, characterized in that the lower deflection guide is designed and designed to cut the thread end like a Keep shield away from full spool. Winding machine according to claim 6, characterized in that the lower deflection guide is provided with a movable element with respect to the lower deflection guide in order to shield the cut thread end from the full bobbin. Winding machine according to claim 6, characterized in that the lower deflection guide can be moved from its operating position to a shielding position in order to shield the thread end on the full bobbin. Thread winding machine comprising: - A rotatable turret with two rotatably driven mandrels for placing at least one sleeve each, on which the thread is wound until a full bobbin is formed, the turret can be rotated during a thread transfer to a full bobbin from a winding to move a trigger position while an empty core is brought to the winding position, - a laying device that moves the thread back and forth on a bobbin, a thread deflector to touch the thread during the transfer and to deflect it into a position in which the thread can be caught by the empty tube in order to transfer it from the full bobbin to the empty tube, - Means for moving the thread deflector from a retracted position, in which the thread deflector has no possibility of disturbing the rotation of the turret, into an extended position, in the thread deflector is located near the empty tube in the winding position in order to come into contact with the thread running to the full bobbin, the thread deflector also being movable with respect to the empty tube in the longitudinal direction in order to deflect the thread into a position in which the Thread is ready to be caught for the empty tube in the winding position, a movable thread guide with a guide edge to limit the thread movement on the full bobbin when the thread is deflected by the thread deflector, and - Means for moving the thread guide from a standby position, in which a disturbance of the turret rotation by the thread guide is excluded, into an operating position, in which the thread guide is positioned near the full bobbin in the pull-off position so that the deflected thread touches the edge of the thread guide. Winding machine according to claim 9, characterized in that the thread guide has a sheet metal with a plurality of elements projecting from a bridge section, which are separated by spaces through which the thread runs when the thread guide assumes its operating position. Winding machine according to claim 10, characterized in that the thread guide is connected to two slides, which are each mounted on a rail and can be moved on this. Winding machine according to claim 11, characterized in that the means for moving the thread guide comprise a drive arrangement connected to each rail for pivoting the shafts, which are positioned outside the ends of the mandrels with the full bobbins. Winding machine according to claim 11, characterized in that the bridge section is provided with a plurality of slots, each opening into one of the spaces for receiving the thread, each slot being substantially aligned with an edge of one of the outstanding elements. Winding machine according to claim 9, characterized in that an auxiliary plate is attached to the thread guide, which is movable towards the thread guide. Winding machine according to claim 12, characterized in that the rails for receiving a piston are hollow and have a liquid inlet slot on each side of the respective piston in order to pressurize one piston side and thus move the piston within the respective rail. Winding machine according to claim 10, characterized in that the guide device comprises a sheet and a pair of rails connected by a rod, a pair of slides being mounted on the rod, each of which is connected to the rod by a pair of levers. Thread winding machine comprising: - A rotatable turret with two rotatably driven mandrels for placing at least one sleeve each, on which the thread is wound until a full bobbin is formed, the turret can be rotated during a thread transfer to a full bobbin from a winding to move a trigger position while an empty core is brought to the winding position, a laying device which moves the thread back and forth on a sleeve to form a full bobbin, a thread deflector to touch and deflect the thread during the transfer and into a position in which the thread can be caught by an empty tube in order to transfer it from the full bobbin to the empty tube, with a loose thread end on the full bobbin remains, - Means for moving the thread deflector from a retracted position, in which the thread deflector has no possibility of disturbing the rotation of the revolving turret, to an extended position, in which the thread deflector is close to the empty tube in the winding position, to that of the full bobbin to come into contact with the thread, wherein the thread deflector can also be moved longitudinally with respect to the empty tube in order to deflect the thread into a position in which the thread is ready to be caught by the empty tube in the winding position, - a movable shielding sheet to shield the loose thread on the full bobbin from the empty tube in the winding position, the shielding sheet being at least two of one Bridge section has excellent elements that form a space in which the thread is moved back and forth by the laying device, while said bridge portion has at least one slot opening into the space into which the deflected thread is inserted before it is transferred to the empty tube , and - Means for moving the shielding blade from a standby position, in which a disturbance of the turret rotation by the shielding blade is excluded, into an operating position, in which the shielding blade is positioned near the full bobbin in the withdrawal position, so that the deflected thread is guided into the slot. A winder according to claim 17, characterized in that the protruding elements each have a free end which is arranged facing away from the bridge section, with each protruding element tapering from the free end to the bridge section. Winding machine according to claim 17, characterized in that the slot is aligned with an edge of one of the outstanding elements. A winder according to claim 17, characterized in that the shielding blade is connected to two slides, which are each mounted on a rail and can be moved along said rail, said means for moving the shielding blade comprising a drive arrangement connected to each rail for pivoting the shafts who are beyond the face ends of the mandrel are positioned with the full spool. Method for transferring the thread (214) from a full bobbin (203) to an empty tube (211) on a bobbin winder (201) with continuous thread feed, with a rotating turret (202) carrying the bobbin winder (205, 207), in which a) the full bobbin (203) is pivoted away from the winding position from the contact roller (208) and the empty tube (211) is brought into the winding position, b) the thread (214) running to the full bobbin (203) is deflected by a deflection means (213) within the thread path leading to the full bobbin (203), c) the thread (214) is lifted from the thread guide (212) on the traversing device (206) and is held in a plane lying outside the range of the thread stroke (H) of the traversing device (206), d) the thread (214) is guided, caught and severed via a catching means (223) on the empty sleeve (211) or on the mandrel (207) and e) it is then wound onto the empty tube (211) brought into the winding position,
characterized in that f) the deflecting means (213) is introduced into the thread path in a first movement opposite to the deflecting direction and is then withdrawn in the deflecting direction, the thread (214) being deflected by the deflecting means (213) in this way is caught that it is deflected by the latter when the deflection means (213) is withdrawn. A method according to claim 21, characterized in that the deflection means (213) is designed such that the thread (214) can be further shifted in the axial direction of the bobbin (203) during or after the deflection. Method according to one of claims 21 or 22, characterized in that the thread (214) during the first movement of the deflecting means (213) from an end section (234, 242) on one of the guide rods (231, 232; 239, 240 forming the deflecting means ) detected and passed through the traversing (206) between the end sections (234, 242) to the rear thread guide edge (237) and there is continuously traversed along the latter. Method according to claim 23, characterized in that the guide rods (231, 232; 239, 240) guiding the thread (214) and forming the guide edge (237) are deflected together with the changing device (217) and out of the area of the original thread run swiveling in new sleeve (211) and the incoming thread (214) is continuously changed. A method according to claim 24, characterized in that the deflection means (213) together with the thread changing device (217) after the positioning the empty tube (211) is pivoted in the winding position against the empty tube (211), the incoming thread (214) is lifted out of the traversing device (206) and axially laterally out of the traversing area by a deflecting element (263) on the changing device (217) and is guided into the catching means (223) on the empty sleeve (211). Method according to claim 25, characterized in that the thread is displaced transversely and parallel to the thread guide edge (237) by the deflecting element (263). Method according to claim 25, characterized in that when the thread (214) is transferred to the new sleeve (211), a separating plate (255) of a separating device (245) is inserted between the empty sleeve (211) and the full bobbin (203) and the loose end of the thread (214) on the full bobbin (203) is prevented from contacting the surface of the empty sleeve (211). Spooling machine (201) for winding a thread (214) running at a constant speed onto a spool (203), with a turret (202) carrying two spool mandrels (205, 207), which turret is designed and intended for this purpose and which is wound on the spool mandrel (205 , 207) to push on the bobbin sleeves (211) from a winding position into a loading position for an empty bobbin tube (211) and removal position for the full bobbin (203), with a laying device (206) for traversing the incoming thread (214), with a Guide or contact roller (208), with a thread lifting plate (221) for lifting the thread (214) out of the laying device (206) when changing the bobbin, with a changing device (217) movable in the thread path between the full bobbin (203) and the empty bobbin tube (211) for transferring the one running to the full bobbin (203) Thread (214) on the empty bobbin tube (211) and with a deflection means (213) for deflecting the thread (214) running to the full bobbin (203) from the range of movement of the empty tube (211), characterized in that the deflection means (213 ) attached to the changing device (217) and movable by this to catch the thread (214) in the thread run and retractable to avoid contact between the thread (214) and the empty sleeve (211). Winder according to claim 28, characterized in that the deflecting means (213) is attached to the changing device (217) at a distance and essentially parallel to the front edge. Winder according to one of claims 28 or 29, characterized in that the deflecting means (213) consists of two guide rods (231, 232; 239, 240), which lie in line and on the inner side facing the changing device (217) form a guide edge (237), the Adjacent end sections (233, 234; 241, 242) overlap in a capture area (x). Winder according to claim 30, characterized in that the guide rods (231, 232) have a round or elliptical cross section and the End sections (233, 234) run at an acute angle to their common guide edges (238) and the end faces (235, 236) of the end sections (233, 234) lie opposite one another. Winder according to claim 30, characterized in that the guide rods (239, 240) have a rectangular cross section and their end sections (241, 242) are bent in the catching area (x). Winder according to one of claims 31 or 32, characterized in that in the catching area (X) the tip (F) of the first end section (233.241) lies outside the area of the thread guide edge (237) and the tip (E) of the second end section (234.242) lies opposite the thread guide edge (38) and projects beyond the catch edge (237). Winding machine according to one of claims 28 to 33, characterized in that the thread (214) can be changed after catching behind the deflection means (213). Method for transferring the thread (214) from a full bobbin (203) to an empty tube (211) on a bobbin winder (201) with uninterrupted thread feed, with a rotating turret (202) carrying the mandrel (205, 207), in which a) the full bobbin (203) is pivoted away from the winding position from the contact roller (208) and the empty tube (211) is brought into the winding position, b) the thread (214) running to the full bobbin (203) by a deflection means (213) from the full Bobbin (203) leading thread path is deflected, c) the thread (214) is lifted out of the thread guide (212) on the traversing device and is held in a plane lying outside the area of the thread stroke (H) of the traversing device (206), d) the thread (214) is guided, caught and severed via a catching means (223) on the empty sleeve (211) and e) it is then wound onto the empty tube (211) brought into the winding position,
characterized in that the deflecting means (213) is guided into the thread path in a first pivoting movement opposite to the deflecting direction, and the thread (214) is gripped by an end section (234, 242) on one of the guide rods (231, 232; 239, 240) forming the deflecting means (213) and is traversed (206) passed between the end sections (234, 242) to the rear thread guide edge (237) and there is further oscillated along the latter.

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