Method and Device for Winding a Ribbon Comprising a Plurality of Threads Onto a Winding Body Rotating About a Rotation Axis

Abstract

The invention relates to a method for winding a ribbon (17), which is comprised of a number of parallel threads (18), onto a rotating warping drum (2), during which a ribbon lap (66) is moved in a forward direction (e) with the aid of conveyor belts (70), which are placed on the peripheral area of the winding body (2), after the ribbon lap (66) has been constructed. The winding position of each individual thread on the warping drum (2) is established during the winding process with a thread guide (21) assigned to this thread.

Description

The invention relates to a method and a device for winding a ribbon comprising a plurality of threads onto a winding body rotating about a rotation axis. Methods and devices of this type are used, for example, in textile technology for preparing for warping the weaver's warp in a weaving mill. However, winding processes are also required in other sectors, such as, for example, in the wire industry. The present invention, then, is not restricted to textile applications, and the expression “threads” covers any elongate windable element, irrespective of the cross-sectional form or of the material.

In the known warping plants with rotating warping drums, a thread group is drawn off from a bobbin creel which is arranged perpendicularly to the drum axis with respect to the thread group. Such an arrangement requires a relatively large amount of space. The ribbon or lap build-up takes place via a warping slide movable along the drum axis. Further, the known warping methods are somewhat unsuitable particularly for the production of what are known as pattern warps or short warps in which the ribbon composition has to be changed over frequently, since each changeover of the ribbon composition requires a machine standstill. The work process is thereby delayed considerably.

An object of the invention, therefore, is to avoid the disadvantages of what is known, in particular to provide a method and a device of the type initially mentioned which allow a rapid ribbon change or different ribbon compositions, while having a relatively low space requirement. Further, high process reliability is to be ensured. This object is achieved, in terms of the method, by means of a method having the features according to claim 1 and, in terms of the device, by means of a device having the features in claim 11.

In a method for winding a plurality of threads for producing one or more ribbon laps onto a winding body rotating about a rotation axis, the ribbon laps are moved, with the aid of a conveying device arranged on the circumferential region of the winding body, in a forward direction parallel to the rotation axis (axially parallel hereafter) from a first end face of the winding body to a second end face of the latter.

The movement of the threads or of the ribbon laps advantageously takes place with the aid of axial conveyors running axially parallel. Such axial conveyors contain, for example, endless chains or bands. Thus, in particular, transport belts, such as are known in connection with warping plants having drums held fixedly in terms of rotation (as described, for example, in DE-A1-9605924), could also be used.

Advantageously, to produce ribbon laps, the conveying device is moved discontinuously. In particular, the conveying device may be used for transporting entire ribbon laps further on, in order to make it possible to build up new or next ribbon laps. The conveying device is advantageously at a standstill during a winding operation for a ribbon lap. In other words, the conveying device remains at rest relatively with respect to the rotation axis. In this case, of course, the conveying device corotates uninterruptedly with the winding body.

After the build-up of the ribbon lap, the conveying device particularly advantageously moves the ribbon lap in a forward direction by the amount of a predetermined conveying distance. This conveying distance preferably corresponds to the ribbon width of a next ribbon or ribbon lap or of the ribbon or ribbon lap last wound. Thus, advantageously, a plurality of ribbon laps having the same or a different thread repeat can be wound one against the other or next to one another on the winding body, the winding body rotating continuously.

Alternatively to the discontinuous movement of the conveying device, however, it would also be conceivable to move individual threads continuously with the aid of the conveying device. A pattern warp or a plurality of pattern warps with individual ribbons lying next to one another could thereby be wound.

It is advantageous if the threads are drawn off from a bobbin creel arranged in a prolongation of the rotation axis in the region of the first end face of the winding body and having bobbin feeders preferably arranged fixedly in terms of rotation. By virtue of this arrangement, for example, an entire warping plant is arranged essentially in one line. One advantage is that the bobbin creel can be topped up or refitted in a simple way.

It is advantageous, further, if the winding position of a respective thread on the winding body is fixed for the winding operation by means of a thread guide which is assigned to the thread and which can be adjusted axially parallel out of a position of rest into a working position. Owing to the axially parallel displacement, the thread guide can be displaced exactly into a winding position for the respective thread. In addition to the axially parallel movement, the thread guide could also be moved in the radial direction.

The threads are preferably led up as a thread group from a bobbin creel to a thread selection device arranged in the region of the first end face of the winding body in the winding region and having a plurality of thread guides. Individual threads of these threads are drawn off as working threads via the thread guides and form the ribbon or the ribbon lap, while the remaining threads are held clampingly as stock threads on the thread selection device. Clamping preferably takes place in each case by means of a clamping point. Such a thread selection device makes it possible in a simple way to carry out a ribbon change while the winding body is rotating continuously. In particular, a plurality of ribbon laps with a different composition in terms of type of thread, sequence and/or number of threads can thus be produced. This procedure makes it possible in a simple way to carry out a ribbon change while the winding body is rotating continuously, thus speeding up the work process considerably.

After at least one first winding sequence for the first ribbon lap, the working threads of the wound ribbon can be separated and held clampingly on the thread selection device. Thus, in at least one second winding sequence, the working threads of the ribbon may have a composition other than that during the first winding sequence. In this case, it is advantageous if, after the build-up of a ribbon lap, all the working threads are separated by the thread guide. Thus, to produce a next ribbon lap, all the available threads could be utilized as working threads. It would also be conceivable, however, that some of the working threads are not separated after each winding sequence. Working threads which are not separated could be provided for a next ribbon lap. However, the composition of the ribbon may also be identical in the case of a plurality of adjacent laps. Finally, it would also be conceivable that the threads of a ribbon are not separated after each winding sequence, but, instead, the ribbon is guided at the end of one lap directly to the start of an adjacent lap.

A thread transfer taking place during a full winding body rotation can be achieved particularly advantageously if the selected working threads are first tensioned by means of the thread guides into a take-up position above the winding body, in which position they are tensioned freely, approximately parallel to the rotation axis, between the thread guides and a clamping point in each case, and if, in the course of a winding body rotation, all the working threads are picked up successively in the take-up position by an inner thread driver assigned to the winding body and are thereafter separated from the clamping point. After separation from the clamping points, the thread guides, together with their working threads, can be moved into the ribbon winding position over the ribbon width. This flying transfer of the clamped stock threads as working threads onto the winding body can take place at high speeds and within a single winding body rotation.

After the build-up of a ribbon lap, once again, all the working threads can be picked up in succession by an outer thread driver corotating synchronously with the winding body and thereafter be clamped once again by the clamping point and at the same time be separated from the thread guide. Consequently, in practice, a flying return of the working threads into the standby position at the clamping points takes place again.

With the aid of at least one supporting element displaceable axially parallel, a first ribbon lap can be supported on one side during the winding operation. This ensures a stable build-up of a ribbon lap. It is particularly advantageous if the supporting element is displaced axially parallel in synchronism with the ribbon lap transport. The angular position of the supporting portion of the supporting element can in any case be changed or adjusted.

As already outlined above, not all the working threads have to be separated after the build-up of a ribbon lap. Thus, threads which are temporarily not required can be removed from the operation for winding onto the winding body in such a way that the threads not required are wound onto an auxiliary winding body corotating synchronously or asynchronously with the winding body.

At the start and/or at the end of a ribbon lap, the threads, in particular the working threads, are deposited on or under a dividing element, arranged in the circumferential region of the winding body and running axially parallel, by the axially parallel displacement of the thread guide in the forward direction or in the opposite direction to the forward direction, in order to form a lease or for size distribution. Threads can thus be separated from one another in a simple way while the winding body is rotating. For this purpose, the thread guides merely have to be moved back and forth between two positions. These positions are advantageously predetermined by a selection element, such as, for example, a hook. Such a thread division method, in which threads are deposited on or under a crossing rod, arranged in the circumferential region of the winding body and running axially parallel, by means of the axially parallel displacement of the thread guide in the forward direction or in the opposite direction, may also be provided for conventional methods with a rotating winding body. To form a lease or for size distribution, therefore, even winding bodies without conveying devices arranged on them could be used. In this case, a movement or displacement of the threads or ribbon laps takes place solely via the thread guides.

A further aspect of the invention relates to a device for winding a ribbon comprising a plurality of threads and/or for producing ribbon laps onto a winding body drivable in rotation about a rotation axis and having a first and a second end face. A conveying device for the axially parallel movement of threads deposited on the conveying device is arranged on the circumference of the winding body. The conveying device makes it possible to transport threads or ribbon laps in a forward direction from the first end face of the winding body to the second end face of the latter. The winding body is preferably an approximately cylindrical warping drum. Warping drums with a conical portion may, however, also be envisaged.

The conveying device may have at least one transport belt running axially parallel. The transport belts preferably extend approximately over the entire length of the winding body, as defined by the two end faces. The transport belts may be designed as endless bands or endless belts. Other axial conveyors could, of course, also be provided.

A supporting element may be provided for the lateral stabilization of the ribbon laps. The supporting element is advantageously assigned to the conveying device and is displaceable axially parallel together with the latter. Ribbon laps and the supporting element can thus be transported simultaneously. For example, the supporting element may be a supporting ring which is arranged around the circumference of the winding body and which is connected, for example, to one or more transport belts. It is also conceivable, however, that the supporting element has individual supporting wedges which are assigned in each case to a transport belt.

In one embodiment, dividing elements, for example crossing rods, running axially parallel are arranged on the circumference of the winding body in order to form a lease and/or for size distribution. The crossing rods are preferably designed with a cylindrical cross section, although flattened dividing strips may likewise be envisaged. One end of the dividing element is in this case advantageously connected firmly to the winding body in the region of the second end face of the latter. The other end of the dividing element lies freely in the region of the first end face of the winding body, so that threads can be separated from one another by the crossing rod and with the aid of thread guides displaceable axially parallel. It would be conceivable, of course, to employ this type of thread division also in conventional devices in which not every individual thread is deposited via an individual thread guide.

The dividing elements could, under certain circumstances, have conveying devices for the axially parallel displacement of deposited threads or ribbon laps. These could be designed approximately identically to the transport belts described above. In particular, these conveying devices could be coupled via transmission means to the transport belts or be displaceable axially parallel in synchronism with these.

A winding body with crossing rods could be constructed as follows: the circumference of the winding body has, in an end view, dividing portions lying opposite one another, one dividing portion being provided for crossing rods for leasing and the opposite dividing portion being provided for size distribution. These dividing portions could be designed as essentially straight secant portions. Between the two dividing portions are located circumferential portions on which conveying devices, in particular transport belts, are arranged.

Of course, a winding body could admittedly be equipped with dividing elements, but not with a conveying device, such as, for example, transport belts. The dividing elements described could therefore also be provided for conventional warping drums drivable in rotation and, in particular, also for warping drums of cone warping machines. It is conceivable, in particular, that such an arrangement is also used for warping drums which are provided for a cone warping machine.

The dividing elements preferably have at their free end a selection element extending radially outward. With the aid of such selection elements, a thread can be deposited onto the winding body selectively on or under the dividing element in a simple way. The selection element provided could be, for example, a hook or another pointed element.

It is also conceivable to provide a dividing element with movable selection elements. For example, the selection element, in particular the hook mentioned or another point, could be adjustable axially parallel or pivotable. Thus, under certain circumstances, thread division could be optimized.

It is advantageous if a thread guide is arranged for each individual thread in the circumferential region of the winding body and is displaceable axially parallel between two positions with respect to the free end or to the selection element of a crossing rod in such a way that the respective thread can be deposited on the winding body on or under the crossing rod. Particularly preferably, the winding position on the winding body can be fixed by means of the thread guide via which the respective thread can be wound as a working thread.

The thread guides may be arranged in succession arcuately over the winding body and may be adjustable axially parallel out of a position of rest into at least one working position.

In a further embodiment, the thread guides are an integral part of a thread selection device which has in each case a clamping point and a thread guide for a plurality of threads, some of these threads being capable of being drawn off via the thread guides as the working threads forming the ribbon, while the remaining threads can be fixed in a standby position at clamping points as stock threads.

In this instance, in each case a thread guide and a clamping point may be assigned to a thread guide module, the module having an individual drive for adjusting the thread guide and a movable clamping/cutting unit with a clamping point for clamping the thread and with a cutting device for separating the thread. The cutting and clamping of the thread thereby take place virtually at the same location, thus making the flying thread change possible while the winding body is rotating.

The drive of the thread guide module preferably contains a traction mechanism with a traction means, in particular with a toothed belt on which the thread guide is arranged in such a way that the thread guide can be moved approximately axially parallel over a thread guide distance. The drive could alternatively also be provided with a push rod.

A clamping/cutting unit may be movable approximately at right angles with respect to the thread guide distance, in such a way that the clamping point is displaceable with respect to the winding body circumference between a radially outer position of rest and a radially inner thread transfer position.

It is advantageous if the winding body has arranged on it an inner thread driver for picking up and driving all the ribbon threads to be wound at the lap start in the region of the first end face of the winding body. Alternatively, however, a plurality of thread drivers could also be provided, which in each case pick up and drive individual threads to be wound or a specific number of threads to be wound.

The inner thread driver may be displaceable parallel to the rotation axis of the winding body, the inner thread driver being arranged on a linear guide in the winding body surface.

Further, an outer thread driver rotating on an outer path of rotation synchronously with the winding body may be provided for temporarily picking up all the threads of a wound ribbon.

These outer thread drivers may be displaceable axially parallel with respect to the winding body, the outer thread driver being arranged on an outer ring drivable in rotation and surrounding the winding body.

In a further embodiment, an auxiliary winding body corotating synchronously or asynchronously with the winding body is arranged on the first end face of the winding body. The auxiliary winding body preferably has the same rotation axis as the winding body and serves for winding a thread temporarily not required in a warping operation. This thread does not have to be cut off. If this thread is required for the warping operation again, it can be introduced into the warping operation quickly again as a result of the displacement of the corresponding thread guide.

It is advantageous if the diameter of the auxiliary winding body is markedly smaller, as compared with the diameter of the winding body, in particular at least by a factor 5, particularly preferably by a factor 10. Thus, in comparison with the winding operation on the winding body, relatively little thread material is wound on the auxiliary winding body.

Further advantages and refinements of the invention may be gathered from the following description of the exemplary embodiments and external drawings, in which:

FIG. 1 shows a side view of a warping machine,

FIG. 2 shows an end view of a warping drum,

FIG. 3 shows an end view of a further warping drum,

FIG. 4 shows a detail from a cross section through a warping machine,

FIG. 5 shows a top view of the circumferential region of a warping drum and an associated partial side view which shows views of the method steps for leasing,

FIG. 6a shows a top view of the circumferential region of a warping drum with size distribution elements for a first ribbon,

FIG. 6b shows a top view of the warping drum according to FIG. 6a during the division of a second ribbon,

FIG. 7a shows a partial view of a perspective illustration of a thread selection device for a warping machine,

FIG. 7b shows a perspective illustration of an individual thread guide module of the thread selection device according to FIG. 7a,

FIG. 8 shows a view of the thread guide module according to FIG. 7b from the direction of the arrow (a),

FIG. 9 shows a view of the thread guide module according to FIG. 7b from the direction of the arrow (b),

FIGS. 10/11 show the thread guide module in the thread transfer position,

FIGS. 12/13 show the thread guide module during the depositing of the thread on or under a dividing element.

As is evident from FIG. 1, a warping machine, designated as a whole by 1, consists essentially of a warping drum 2 as a winding body with an approximately cylindrical portion 3. The warping drum 2 is mounted rotatably in a stand 5 about a winding body axis or drum axis 6. A thread selection device 8 is arranged stationarily in the region of the first end face 67 of the warping drum 2. The thread selection device contains a multiplicity of thread guides 21 which are arranged so as to be distributed in succession in the region of the drum circumference on the first end face 67 of the warping drum. The thread guides can be moved axially parallel (that is to say, parallel to the rotation axis 6). A bobbin creel 69 lies in the prolongation of the rotation axis 6 of the warping drum 2 in the same line as the warping drum. A thread group 9 is drawn off from the bobbin creel 69 or from another thread dispenser device, each individual thread being led to one of the thread guides 21. The bobbin creel provided could be, for example, an interchangeable creel or another bobbin creel system with fixedly arranged bobbin feeders. Suitable devices, such as, for example, thread brakes, ensure that the threads always remain tensioned.

It can be seen further from FIG. 1 that conveying devices are arranged in the circumferential region of the warping drum 2 for the axially parallel movement of threads and/or of ribbon laps in the forward direction (the forward direction is illustrated by an arrow e). The conveying device provided could be, for example, transport belts 70 distributed over the circumference and having endless belts or endless bands. The transport belt 70 is movable via drive means (not shown).

Further, FIG. 1 illustrates dividing elements in the form of crossing rods 71. Such dividing elements serve for the division of threads, for example for size distribution or for leasing. The crossing rods 71 have a free end on one side. On the opposite side, that is to say in the region of the second end face 68, the crossing rods 71 are connected firmly to an end face termination 77 of the warping drum 2. In the immediate vicinity of the crossing rods 71, transport belts 70 ensure that threads or ribbon laps deposited on the warping drum 2 can be displaced in the direction e in a simple way.

For stabilizing the dividing element 70, a supporting ring 80 is provided between the end faces 67 and 68 and surrounds the winding body concentrically. The supporting ring 80 is individually movable axially parallel. It is advantageous, however, if the supporting ring 80 is movable via the transport belts 70. The supporting ring 80 could thus be transported in the e-direction at the same time as the wound threads or ribbon laps. However, the supporting ring 80 also serves at the same time for supporting one side of a ribbon lap.

FIG. 2 illustrates a possible arrangement of transport belts 70 and dividing elements 71. The dividing elements 71 are arranged on portions 72 and 73 lying opposite one another, these portions being designed as straight secant portions. Dividing elements for leasing are provided on one side, here in the portion 72. Dividing elements for size distribution are provided on the opposite side, that is to say on the portion 73. Conveying devices in the form of carrying belts 70 are arranged between the portions 72 and 73 on the respective circumferential portion 74 and 75. The circumferential portions 74 and 75 and the portions 72 and 73 clearly have an arcuate or circular cross section. It is perfectly conceivable that the dividing elements 71 could also lie on arcuate or circular portions. Further, to ensure that threads or ribbon laps are reliably transported away, further conveying devices, such as transport belts, could be provided in each case between the individual dividing elements 71.

A further embodiment of a warping drum 2 is illustrated in the end view in FIG. 3. The dividing elements 71 are arranged on portions 72 and 73 lying opposite one another, these portions being designed as straight secant portions.

FIG. 4 illustrates diagrammatically the cross section through a warping machine 1. Both dividing elements 71′ and 71″ and transport bands 70 can be seen in FIG. 4. This does not mean, however, that the dividing elements, on the one hand, and the conveying device, on the other hand, have to lie on the same radial plane. Advantageously, then dividing elements and transport belts are also arranged, offset with respect to one another, on the circumference of the warping drum 2.

Inner and outer dividing elements 71′ and 71″ are arranged above the transport belts. The first dividing element 71′ in this case serves for thread division at the start of a lap. The second dividing element 71″, which is arranged at a greater radial distance from the rotation axis 6, serves for thread division at the end of a lap. It is conceivable, in this case, that, in particular, the outer dividing element 71″ could be displaceable in the radial direction r. This may be necessary in the case of different ribbon lap thicknesses. The dividing elements are designed as crossing rods and have hooks 76 which are in each case directed radially outward. These hooks 76 form selection elements, with the aid of which threads can be separated from one another more simply.

FIG. 4 shows a first ribbon lap 66. This is produced essentially as follows: with the aid of thread guides 21, threads 18 are deposited in ribbons onto the circumferential region of the warping drum 2. (See the following FIGS. 7a to 13 for details regarding the construction and functioning of the thread drivers or thread selection device). During the entire winding operation for building up the ribbon lap 66, the transport belts are stationary (the warping drum 2, however, of course, remains in rotation during the entire process). After the ribbon lap 66 has been built up, it is moved with the aid of the carrying belt 70 in the direction e over a conveying distance B (to the left). This conveying distance B in this case corresponds to the ribbon width of the next (here second) ribbon lap. The direction of rotation is indicated by an arcuate arrow in the region of the roller arranged on the left. Thread division at the start and at the end of the ribbon lap is explained in more detail with reference to the following FIG. 5.

The ribbon lap 66 is supported on one side with the aid of a supporting wedge 79. A supporting wedge 79 is assigned in each case to a carrying belt 70 and is firmly connected to the latter. The supporting wedge 79 can thus be transported together with the carrying belt 70 in the e-direction. In any event, the angular position of the supporting portion of the supporting wedge 79 could be adapted, for example, to the type of thread and/or type of operation. Instead of individual supporting wedges, however, the supporting ring shown in FIG. 1 could, of course, be provided.

The warping drum 2 is mounted rotatably on both sides via rollers. For example, ball or roller bearings serve as bearings. An auxiliary winding body 78 corotating synchronously with the warping drum 2 is arranged with the same rotation axis 6 on the first end face 67. The auxiliary winding body 78 serves for the winding of threads temporarily not required for a warping operation.

FIG. 5 shows how leases can be formed. Dividing elements 71: FKE1, FKE2, FKE3 divide the threads illustrated by {circle around (1)} to {circle around (5)}, in such a way that these lie alternately on or under the dividing elements 71. In order to deposit a thread, for example, onto a crossing rod 71, a thread guide 21 must be positioned on the left or in the position ON. To deposit a thread under the crossing rod, the thread driver 21 is on the right or in the position UND. The positions ON and UND are predetermined by the selection element 76. Leasing takes place while the drum is rotating (indicated by the direction of the arrow a). The depositing of the threads for leasing may be employed in the same way both for the inner and for the outer dividing element (cf. FIG. 4).

Size distribution takes place essentially in a similar way to that described in FIG. 5. Here, too, the thread driver 21 must essentially merely be displaced back and forth between two positions (ON, UND) in such a way that the threads can be deposited on or under the dividing elements 71. As is clear in FIGS. 6a and 6b by the example of “7-fold size distribution”, the threads (illustrated by {circle around (1)} to {circle around (7)}) are no longer deposited alternately, but in each case only individually. First, therefore, only the first thread {circle around (1)} for a ribbon is deposited on a first size distribution element STE1, and the remaining threads ({circle around (2)} to {circle around (1)}) are deposited under the size distribution element STET. The second thread {circle around (1)} is then deposited on the second size distribution element STE2, the procedure for the following threads being similar. FIG. 6b shows the same method for a next ribbon (threads 8 in a circle ff.). The number of size distribution elements is predetermined by the number of threads of a ribbon.

FIG. 7a shows a perspective partial view of a thread selection device 8 of a warping machine. The thread selection device 8 has a plurality of thread guide modules, the modules 20′, 20″, 20′″ and 20′^v being arranged in succession along the ring. A thread guide 21 can be displaced back and forth or positioned along the drum axis in the direction of the arrow e or −e. The movement of the thread guide 21 may take place by means of a traction mechanism 33. Other means for moving the thread guide 21 may, of course, also be envisaged, such as, for example, pneumatic or hydraulic systems.

An individual thread guide module 21 is described in somewhat more detail below with reference to FIGS. 7b and 8 to 6. The module has a holding plate 32 to which a mechanism unit 33 and a clamping/cutting unit 22 are fastened. The mechanism unit has a traction mechanism with a toothed belt 29. The toothed belt can be driven by a thread guide drive 34 which is preferably a stepper motor. Fastened to one of the two parallel toothed belt strands is a thread guide 21 which can cover a thread guide distance FS axially parallel in the direction of the arrow e. In the position of rest RS, the thread guide 21 is set back behind the clamping/cutting unit. The clamping/cutting unit 22 is arranged on a lifting slide 26 which is mounted displaceably in a guide 35. A pneumatic pressure medium cylinder 28 in this case serves as drive means.

The clamping/cutting unit has a double lever arm 25 which is articulated on the lifting slide 26 and the upper lever arm of which can be activated via a pneumatic pressure medium cylinder 27. The actual cutting device 24 is formed on the lower lever arm by a cutting edge. A clamping point 23 lies directly behind the cutting plane and can likewise be activated via the double lever arm 25.

The working thread or stock thread 18/19 supplied is introduced via a thread guide tube 36 which issues on the side of the double lever arm above the clamping point 23 in such a way that the thread lies on the thread guide distance of the thread guide 21. The thread guide has a notch or flute which prevents the thread from slipping away.

For a better understanding of the following functional description of the thread guide module 20, FIG. 7b also illustrates the inner thread driver 30 assigned to the drum. Said inner thread driver is capable, by means not illustrated in any more detail here, of clampingly picking up and carrying along a thread tensioned in the correct position.

As long as a thread is clamped in the initial position illustrated in FIG. 8 on a thread guide module, it serves as a stock thread 19 which can be incorporated at any time as a working thread into the warping process to form a ribbon. For this purpose, according to FIGS. 10 and 11, the thread guide 21 is activated, so that it covers part of the thread guide distance FS and first assumes a thread take-up position FM. The lifting slide 26 is in this case already in the lowered position also illustrated in FIG. 8. The thread follow-up required for reaching the thread take-up position FM is drawn off via the thread guide tube 36. The rotational movement of the drum is coordinated with the movement of the thread guide 21 in such a way that, immediately after the thread take-up position FM is reached, the lower thread driver 33 carries along this and any other working thread of the present lap.

Immediately after the thread is reliably picked up, the clamping point 23 is released, so that the working thread can be drawn off at the circumferential speed of the inner thread driver 30. Up to this time point, all the active thread guide modules on the thread selection device operate simultaneously. Subsequently, all the active thread guides execute the thread division method described by way of example with reference to FIG. 5 and/or FIGS. 6a/6b.

After the formation of the lease and/or after size distribution, all the active thread guides 21, 21a, 21b, 21c, etc., move in the way also described below with their respective working threads into the actual winding position of the ribbon. The thread guides 21 maintain their relative position with respect to one another until the end of the ribbon lap is reached. During the lap build-up, all the thread guides move synchronously in an axially parallel direction e. When the lap length is reached, the entire thread group is pushed away from the thread selector by the amount of one ribbon width by the transport belts and the thread guides return to their initial position. Instead of the axially parallel displacement of the transport belts, it is also conceivable, instead, for the entire thread selection device to be displaced in this direction. In this method, the crossing rods would follow up axially parallel by the amount of the next ribbon width by means of concentrically mounted rings.

At the end of a ribbon lap, the lifting slide 26 on each thread guide module 20 is moved into the upper end position so that the clamping point 23 can pick up the drawn-off thread. The cutting device 24 is activated virtually simultaneously, the working thread 18 just processed being freed from the thread guide 21 and at the same time being held in a position of readiness again at the clamping point as a stock thread 19.

Claims

1-30. (canceled)

31. A method for winding a ribbon comprising a plurality of threads onto a winding body rotating about a rotation axis and having a first and a second end face, wherein a ribbon lap is moved, with the aid of a conveying device arranged on the circumferential region of the winding body, preferably with the aid of axial conveyors running axially parallel and particularly preferably with the aid of transport belts, in a forward direction parallel to the rotation axis from a first end face to a second end face.

32. The method as claimed in claim 31, wherein the conveying device is moved discontinuously.

33. The method as claimed in claim 32, wherein, during a winding operation for a ribbon lap, the conveying device remains unmoved with respect to the rotation axis, and, after the build-up of the ribbon lap, the conveying device moves the ribbon lap forward over a predetermined conveying distance which corresponds to the ribbon width of the ribbon or ribbon lap last wound or of a next ribbon or ribbon lap.

34. The method as claimed in claim 31, wherein the threads are drawn off from a bobbin creel arranged in a prolongation of the rotation axis in the region of the first end face of the winding body and having bobbin feeders arranged fixedly in terms of rotation.

35. The method as claimed in claim 31, wherein the winding position of a respective thread on the winding body is fixed for the winding operation by means of a thread guide which is assigned to the thread and which can be adjusted axially parallel out of a position of rest into a working position.

36. The method as claimed in claim 35, wherein threads are led up as a thread group from a bobbin creel to a thread selection device arranged in the region of the first end face of the winding body in the winding region, and in that individual threads of these threads are drawn off as working threads via the thread guides and form the ribbon, while the remaining threads are held clampingly as stock threads on the thread selection device.

37. The method as claimed in claim 31, wherein all the working threads are separated after the build-up of a ribbon lap.

38. The method as claimed in claim 31, wherein, at least during the winding operation for the first ribbon lap, the latter is supported on one side with the aid of at least one supporting element, displaceable axially parallel.

39. The method as claimed in claim 31, wherein those threads which are temporarily not required are removed from the winding operation for winding onto the winding body in such a way that the threads not required are wound onto an auxiliary winding body corotating synchronously with the winding body and preferably having a smaller diameter than the winding body.

40. The method as claimed in claim 36, wherein, at the start and/or at the end of a ribbon lap, the threads, in particular the working threads, are deposited, by the axially parallel displacement of the thread guide in the forward direction or in the opposite direction, on or under a dividing element, in particular in the form of crossing rods, arranged in the circumferential region of the winding body and running axially parallel, in order to form a lease or for size distribution.

41. A device for winding a ribbon comprising a plurality of threads, in particular for producing ribbon laps, onto a winding body drivable in rotation about a rotation axis and having a first and a second end face, wherein a conveying device is arranged on the circumference of the winding body for the axially parallel movement in the forward direction of threads deposited on the conveying device while the winding body is rotating.

42. The device as claimed in claim 41, wherein the conveying device has at least one transport belt running axially parallel.

43. The device as claimed in claim 42, wherein at least one of the transport belts is assigned a supporting element, in particular in the form of a supporting ring or of individual supporting wedges, for the lateral stabilization of a first ribbon lap.

44. The device as claimed in claim 41, wherein dividing elements, in particular in the form of crossing rods, running axially parallel are arranged on the circumferential region of the winding body in order to form a lease or for size distribution.

45. The device as claimed in claim 44, wherein the dividing elements have at their free end a selection element, in particular a hook or a point, extending radially with respect to the rotation axis.

46. The device as claimed in claim 45, wherein the selection element is adjustable axially parallel.

47. The device as claimed in claim 44, wherein the dividing elements are guided for stabilization by the supporting ring.

48. The device as claimed in claim 44, wherein at least two dividing elements are provided at a different radial distance from the rotation axis for the start of the ribbon lap, on the one hand, and for the end of the ribbon lap.

49. The device as claimed in claim 44, wherein a thread guide is arranged for each individual thread in the circumferential region of the winding body and is displaceable axially parallel between two positions with respect to the free end or with respect to the selection element of a dividing element, in such a way that the respective thread can be deposited onto the winding body on or under the dividing element.

50. The device as claimed in claim 41, wherein a thread guide is arranged for each individual thread in the circumferential region and on a first end face of the winding body, via which thread guide the respective thread can be wound and by means of which thread guide a winding position can be fixed on the winding body.

51. The device as claimed in claim 41, wherein the thread guides are arranged in succession arcuately over the winding body, and in that they are adjustable axially parallel out of a position of rest into at least one working position.

52. The device as claimed in claim 49, wherein the thread guides are an integral part of a thread selection device which has in each case a clamping point and a thread guide for a plurality of threads, some of these threads being capable of being drawn off via the thread guides as working threads forming the ribbon, while the remaining threads can be fixed in a standby position at the clamping points (53) as stock threads.

53. The device as claimed in claim 52, wherein in each case a thread guide and a clamping point are assigned to a thread guide module which has a mechanism for adjusting the thread guide and a movable clamping/cutting unit with a clamping point for clamping the thread and with a cutting device for separating the thread.

54. The device as claimed in claim 52, wherein the drive of the thread guide module contains a traction mechanism with a traction means, in particular with a toothed belt on which the thread guide is arranged in such a way that it can be moved over a thread guide distance approximately parallel to the rotation axis of the winding body.

55. The device as claimed in claim 53, wherein the clamping/cutting unit is mounted movably approximately at right angles with respect to the thread guide distance, in such a way that the clamping point is displaceable with respect to the winding body circumference between a radially outer position of rest and a radially inner thread transfer position.

56. The device as claimed in claim 41, wherein an inner thread driver for picking up and driving all the ribbon threads to be wound at the lap start is arranged on the winding body.

57. The device as claimed in claim 56, wherein the inner thread driver is displaceable parallel to the rotation axis of the winding body, the inner thread driver being arranged on a linear guide in the winding body surface.

58. The device as claimed in claim 56, wherein an outer thread driver corotating on an outer path of rotation synchronously with the winding body is provided for temporarily picking up all the threads of a wound ribbon.

59. The device as claimed in claim 58, wherein the outer thread driver is displaceable parallel to the rotation axis of the winding body, the outer thread driver being arranged on an outer ring drivable in rotation and surrounding the winding body.

60. The device as claimed in claim 41, wherein an auxiliary winding body corotating synchronously or asynchronously with the winding body and having the same rotation axis is arranged on the first end face of the winding body for winding threads temporarily not required for a warping operation.