WO2009074493A1

WO2009074493A1 - Winding device

Info

Publication number: WO2009074493A1
Application number: PCT/EP2008/066640
Authority: WO
Inventors: Jan Westphal; Mathias STÜNDL; Claus Matthies; Friedrich Lennemann
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2007-12-13
Filing date: 2008-12-02
Publication date: 2009-06-18
Also published as: DE102007060148A1

Abstract

The invention relates to a winding device of at least one thread (14) on a spool (18) having a spool spindle (3.1) that can be driven for receiving a spool sleeve (6.1). The spool spindle acts with an oscillating device (13) for moving the thread back and forth, and with a contact roller (8) for laying the thread on the circumference of the spool. The contact roller hereby contacts the spool sleeve or the spool at a contact zone (10). In order to prevent jamming of the thread between the contact roller and the spool sleeve, particularly when catching and winding the thread, the contact roller according to the invention has a non-contact zone (11) in the area of the spool sleeve, designed having a smaller outer diameter relative to the contact zone and covering a winding area for receiving a reserve thread winding (19) on the circumference of the spool sleeve.

Description

spooling

The invention relates to a winding device of at least one thread to a coil according to the preamble of claim 1.

A generic coil is known for example from DE 44 15 653 Al.

For example, in the manufacture of synthetic yarns in a melt spinning process, the yarns are wound continuously at the end of a process for storage as spools. For this purpose, the known winding device has a projecting winding spindle, on which one or more winding tubes are held for receiving the coil or a plurality of coils. For winding the coils, the winding spindle cooperates with a traversing device and a contact roller. The traversing device has traversing means per winding station in order to guide the thread back and forth within a traversing stroke so that, when the filament is deposited on the surface of the reel, a cross-winding and thus, in particular, a uniform mass distribution is established. The thread is deposited over the circumference of the contact roller on the bobbin surface. For this purpose, the contact roller is held with a contact pressure on the surface of the coil.

In order to start a winding process of a bobbin, it is necessary that the continuously fed yarn is caught at the beginning and wound on the sleeve surface of the winding tube. On the one hand to avoid trapping of the thread during a capture between the contact roller and the surface of the winding tube and on the other hand to allow an approximation of the peripheral speeds between the contact roller and the winding tube, the contact roller in a region outside the thread guide on a so-called stop ring, at the beginning of the winding process on the winding spindle. supports. This creates a gap between the surface of the winding tube and the contact roller in the entire yarn guide region of the contact roller. Thus, after catching the thread and winding a thread reserve, the first thread layers of the spool are wound without the involvement of the contact roller. Only after the conditional by the stop ring gap between the contact roller and the winding tube is filled by the wound thread layers of the growing coil, the thread is deposited by means of the contact roller on the coil surface. Depending on the size of the gap, there is the risk that the first layers are wound too loosely, which in particular adversely affects the stability of the coils on the circumference of the winding tubes.

Winding devices are also known from the prior art, in which the contact roller is formed without stop rings and is therefore supported at the beginning of a winding directly on the surface of the winding tube. Such a device is disclosed, for example, in DE 10 2004 029 550 A1. In principle, there is the problem that at the beginning of the process an undesired jamming of the thread between the contact roller and the winding tube occurs. In that regard, such winding devices are preferably carried out with additional tools such as a clamping plate to allow the catching and Anwi- disgusting of the thread outside the winding tube.

It is an object of the invention to develop a winding device for winding at least one thread to a coil of the generic type such that a thread for winding a coil when catching, when Anwickeln and when winding is optimally feasible.

This object is achieved in that the contact roller has a non-contact zone in the region of the winding tube, which is formed in relation to a contact zone with a smaller outer diameter and covers a Anwickelbereich for receiving a thread reserve on the circumference of the winding tube. Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention is characterized in that the thread for catching and winding on the winding tube is freely guidable. The non-contact zone of the contact roller avoids pinching the thread between the contact roller and the winding tube. In that regard, can be set when catching and winding of the thread independent of the peripheral speed of the feeler roller thread tension. Another advantage is given by the fact that adjusted by the already set when catching and Anwickeln contact between the contact zone of the contact roller and the winding tube adjustment of the peripheral speed, so that after winding the thread reserve of the thread from the beginning of Aufwickeins to the end Aufwickeins the coil can be deposited on the surface of the winding tube or on the surface of the coil under the same conditions via the contact roller. For example, in order to form the thread reserve, the thread can be adapted to individual conditions adapted to the respective winding in a winding region of the winding tube and for forming the coil in a coil region of the sleeve. Another significant advantage of the winding device according to the invention is that the contact roller can be used at the beginning of winding the coil to control the spindle speed of the winding spindle to maintain a constant peripheral speed of the coil from the beginning to the end of the winding.

In order to be able to wind a thread reserve winding and a coil winding adjacent to each other as possible on a winding tube, the development of the invention is preferably formed, in which the non-contact zone and the contact zone are separated by a diameter step on the circumference of the contact roller and wherein the diameter stage in position on the Contact roller offset from the coil is formed. This can advantageously realize small transition areas. The advantageous development of the invention, in which the outer diameter of the non-contact zone is smaller by an amount in the range of 0.5 mm to 4 mm than the outer diameter of the contact zone, ensures that even multi-ply Fadenreservewicklungen can be generated with constant thread tension. The gap set between the non-contact zone of the contact roller and the winding tube can thereby be adapted to the thread denier or the thread reserve winding.

In order to simultaneously be able to wind a plurality of coils on a winding spindle, the development of the invention is preferably used, in which the contact roller has alternately a plurality of contact zones and non-contact zones on the circumference, wherein on the winding spindle a plurality of bobbins for receiving a plurality of coils are held. Thus, each winding tube can be assigned a contact zone and a non-contact zone on the circumference of the contact roller. The non-contact zones thereby cover the respective Anwickelbereiche the winding tube to allow the inclusion of the Fadenreservewicklung.

In order to allow a continuous increase in the number of bobbins when the thread is being wound onto the bobbin, the contact roller or the winding spindle is kept movable, so that a relative deflection movement between the contact roller and the winding spindle can be carried out. Particularly advantageous is the execution of the winding devices according to the invention according to claims 5 and 6. Thus, the thread can be beneficial without significant interruption to coils aufkel. Each of the winding spindles held in the Spulrevolver acts alternately with the contact roller together, which can be performed rich for transferring the thread from a full bobbin to an empty winding tube without clamping in the Anwickelbe-.

On the one hand to allow changing operations of the full bobbins on one of the winding spindles, and on the other hand, the spool increase to control the winding turret

- A - to capture, the contact roller is preferably rotatably supported at both ends to a rocker, which is pivotally connected to a machine frame. Thus, for example, the stroke of the contact roller can be used to control a deflection movement of the spindle carrier or of the winding turret by means of a sensor.

When two winding spindles are used, the winding process of the thread can be advantageously automated by associating with the winding tube, at an end facing the winding area, a catching means which cooperates with an auxiliary guiding means for catching and winding the thread.

To further explain the winding device according to the invention, some embodiments of the winding device according to the invention are described in more detail below with reference to the accompanying drawings.

They show:

1 is a schematic side view of a first embodiment of the device according to the invention; FIG. 2 is a schematic front view of the embodiment of FIG. 1;

3 shows schematically a section of the side view of the embodiment of FIG. 1; FIG. 4 shows a schematic side view of a further embodiment of the winding device according to the invention

1 and 2, a first embodiment of a winding device according to the invention is shown schematically in several views. In Fig. 1, the embodiment is shown in a side view and in Fig. 2 in a front view. Unless an explicit reference is made to one of the figures, the following description applies to both figures. In a machine frame 1, a spindle carrier in the form of a winding turret 2 is rotatably mounted. The winding turret 2 is connected to a turret drive 5, so that the winding turret 2 in the machine frame 1 is rotationally driven. At the Spulrevolver 2 are offset by 180 ° to each other two winding spindles 3.1 and 3.2 held. The winding spindles 3.1 and 3.2 each have a free projecting end and a rotatably mounted on the winding turret 2 end, which is coupled to a spindle drive 4.1 or 4.2. On the circumference of the winding spindle 3.1 and 3.2, a winding tube 6.1 and 6.2 is held to receive a spool 18 with a filament winding.

In the operating situation shown in FIGS. 1 and 2, the winding spindle 3.1 is in an operating range for winding a thread 14. The winding spindle 3.2 is held in a changing area to remove a previously wound coil and to exchange it for a new winding tube.

In the operating range, the winding spindle 3.1 cooperates with a contact roller 8 and a traversing device 13, which are both held on the machine frame 1. For this purpose, the contact roller 8 is rotatably mounted on a rocker 12 at both ends. The rocker 12 is pivotally supported on the machine frame 1 via a pivot bearing 21.

The contact roller 8 abuts a coil 18 on the coil surface of the coil 18 during winding of the filament 14. In this case, a contact force for depositing the thread 14 on the surface of the coil 18 is generated via the weight of the contact roller 8 and possibly by additional force transmitter. The contact roller 8 consists of a contact zone 10 and a non-contact zone 11, which are separated by a diameter step 9 from each other. The contact zone 10 extends over the entire coil width of the coil 18 and forms the contact with the coil 18. The non-contact zone 11 of the contact roller 8 formed laterally next to the coil 18 is formed with an outer diameter which is smaller than the outer diameter of the contact zone 10 The contact zone 11 extends over the end of the winding tube 6.1 addition, the diameter stage 9 is formed in its position on the contact roller 8 as close to one of the end faces of the coil 18. The function of the contact roller 8 formed non-contact zone 11 will be explained in more detail below.

The upstream in the direction of yarn travel of the contact roller 8 traversing device 13 has traversing means to the thread 14 within a traverse stroke, which usually covers the width of the coil 18, back and forth. In this case counter-rotating blades or a transversely reciprocating yarn guide can be used as traversing means.

In Fig. 1 and Fig. 2, an embodiment of the winding device according to the invention in an operating state is shown, in which the thread 14 is wound on the winding spindle 3.1 to the coil 18. The thread 14 is fed to the winding unit via a thread guide 15 and guided back and forth by means of the traversing device 13. Subsequently, the thread 14 is guided with partial looping on the contact roller 8 and deposited on the surface of the coil 18. It formed on the surface of the coil 18 crossed filament winding.

During winding of the thread 14 to the spool 18, the spool turret 2 is controlled via the turret drive 5 such that the winding spindle 3.1 executes a deflection movement corresponding to the growth of the spool 18. To control the turret drive 5, for example, the lifting movement of the contact roller 8 could be detected by a sensor to maintain a desired position of the contact roller 8 by continuous or discontinuous rotation of the bobbin revolver 2.

With increasing increase of the coil 18, it is to maintain a constant

Winding speed required to control the spindle drive 4.1 of the winding spindle 3.1 such that the peripheral speed of the coil 18 remains constant. For this purpose, for example, the speed of the contact roller 8 by means detect a sensor and use it as a control signal, so that speed changes are avoided by increasing the coil 18.

In the event that the bobbin 18 on the winding spindle 3.1 has reached a final diameter, a yarn change is initiated from the winding spindle 3.1 to the winding spindle 3.2. For this purpose, the turret drive 5 is activated in such a way that the winding turret 2 guides the winding spindle 3.1 into a change region and the winding spindle 3.2 into the operating region. For yarn transfer, an auxiliary guide means 16 is arranged above the traversing device 13, which is shown by way of example as a pivotable guide plate 22, which is pivoted into the yarn path and guides the yarn 18 out of the traversing device 13. At the same time, the thread 18 is guided into a catching position laterally next to the traversing device 13, so that the thread reaches the end of the winding spindle 3.2 into the area of influence of a catching means 7.2. The catching means 7.1 and 7.2 are respectively arranged at the ends of the winding tubes 6.1 and 6.2 directly to the winding spindle 3.1 and 3.2. The leadership of the thread to catch can be supported by other auxiliary guidance means not shown here.

For further explanation of a yarn transfer, reference is made in addition to FIG. In Fig. 3 is a detail of the side view of the embodiment shown in Fig. 1 is shown. In the section, the projecting end of the winding spindle 3.2 with the winding tube 6.2 and the adjacent contact roller 8 is shown.

For receiving the thread, the winding tube 6.2 has at one end a first longitudinal section, which is designated as an Anwickelbereich 20. The Anrollel- 20 follows a substantially over the entire winding tube 6.2 extending coil region 17, in which the windings of the coil 18 are stored. At the Anwickelbereich 20 facing the end of the winding tube 6.2 the catch 7.2 is formed. The catch 7.2 is shown in this exemplary embodiment by a ring with a catch nose, which catches the thread for Anwickeln. In order to avoid jamming of the thread between the contact roller 8 and the winding tube 6.2 in this situation, the non-contact zone 11 of the contact roller 8 extends over the entire Anwickelbereich 20 of the winding tube 6.2. The diameter step 9 of the contact roller 8 is offset from the coil area 17 in the winding tube 6.2, so that the entire coil area 17 of the winding tube 6.2 is in contact with the contact zone 10 of the contact roller 8. Between the non-contact zone 11 of the contact roller 8 and the Anwickelbereich 20 of the winding tube 6.2 a gap is formed. Thus, the thread can be freely wound into a yarn reserve winding in the Anwickelbereich 20. Irregularities in the thread winding within the thread reserve can thus be avoided. In particular, in the case of driven contact rollers, which are kept at a predetermined speed by a separate drive during the changeover phase, it is thus also possible to advantageously avoid conveying effects on the thread. In this respect, it should be expressly stated at this point that the contact roller 8 shown in the exemplary embodiment in FIGS. 1 and 2 can alternatively be embodied with a separate drive. The drive, preferably an electric motor could in this case be arranged at one of the ends of the contact roller 8 and held over the rail 12.

In Fig. 3, the situation is shown in which the thread 8 is guided after the thread reserve winding 19 back into the traversing device and winds within the spool portion 17, a first thread layer. In this case, the thread 14 is guided directly on entering the coil area 17 over the circumference of the contact roller 8 in the region of the contact zone 10. Depending on the yarn denier and depending on the yarn reserve winding 19 in the Anwickelbereich 20, the gap between the non-contact zone 11 of the contact roller 8 and the winding tube 6.2 can be performed arbitrarily. Preferably, the outer diameter of the non-contact zone 11 of the contact roller 8 is smaller than the outer diameter of the contact zone 10 by an amount in the range of 0.5 mm to 4 mm. As a result, sufficient gaps and distances in the Anwickelbereich 20 of the winding tube 6.2 can be realized.

The exemplary embodiment of a winding device shown in FIGS. 1 and 2 is suitable for continuously winding a thread in a winding station. In principle, such winding devices are also used to simultaneously wind a plurality of threads in large numbers parallel to each other to form coils. Such an embodiment is shown in Fig. 4 schematically in a side view. The embodiment is identical in basic structure of the winding units to the embodiment of FIGS. 1 and 2, so that reference is made to the preceding description and at this point only the differences will be explained.

The exemplary embodiment in FIG. 4 shows a total of two winding stations in order to wind two threads 14.1 and 14.2 parallel to one another in parallel with two coils 18.1 and 18.2. For this purpose, two winding tubes arranged side by side are held on the winding spindles 3.1 and 3.2. Thus, the winding spindle 3.1 carries the winding tubes 6.1 and 6.3 and the winding spindle 3.2, the winding tubes 6.2 and 6.4. The winding tubes 6.1 and 6.3 and 6.2 and 6.4 are held as a sleeve package directly to each other on the winding spindles 3.1 and 3.2. At the ends of the winding tubes 6.1 to 6.4 each have a catch 7.1 to 7.4, which is formed in each case by a catch slot in the winding tube.

The winding spindles 3.1 and 3.2 are arranged projecting on the winding turret 2, which is rotatably mounted in the machine frame 1 and is coupled to the turret drive 5. The winding spindles 3.1 and 3.2 are each driven by a spindle drive 4.1 and 4.2.

In an operating range of the winding spindles 3.1 and 3.2, a contact roller 8 is arranged, which is rotatably mounted on the rocker 12. The contact roller 8 has a plurality of contact zones 10.1 and 10.2 and a plurality of non-contact zones 11.1 and 11.2, which are formed alternately on the contact roller 8. Thus, each of the winding tubes 6.1 and 6.3 or 6.2 and 6.4 each associated with a contact zone 10.1 or 10.2 and a non-contact zone 11.1 and 11.2 of the contact roller 8. The non-contact zone 11.1 and 11.2 are formed identically in the outer diameter and each separated via a diameter stage 9.1 and 9.2 of the contact zones 10.1 and 10.2. The contact zones 10.1 and 10.2 have a larger outer diameter, so that when contacting the contact roller 8 to the winding tubes 6.1 and 6.3 or 6.2 and 6.4 respectively a gap between the non-contact zone 11.1 and 11.2 of the contact roller 8 and the winding tubes 6.1 and 6.3 or 6.2 and 6.4 is created.

The contact roller 8 is associated with a roller drive 23, which drives the contact roller 8 at least in phases, in particular during a change of thread.

The upstream in the yarn path of the contact roller 8 traversing mechanism 13 has several traversing means to guide the thread in each winding position. The traversing means can preferably be driven synchronously by a group drive.

The function for winding the reels 18.1 and 81.2 and the yarn change between the winding spindles 3.1 and 3.2 are identical to the aforementioned embodiment, so that no further explanation is required at this point. The number of winding units shown in Fig. 4 is exemplary. In principle, such winding devices can wind a larger number of coils simultaneously on a projecting winding spindle. In this case, it is also possible to rotatably support the winding spindles at both ends, that is also at the projecting end.

The exemplary embodiments of the winding device illustrated in FIGS. 1 to 4 each show a directly driven winding spindle for winding the thread a coil. However, the invention is not limited to that the winding spindle is driven by a separate spindle drive. So it is also possible to drive the winding spindle through the contact roller. In this case, the winding spindle is preferably formed by clamping plates, which hold a winding tube between them. The clamping plates are rotatably mounted on the rocker and hold the winding tube between them. The drive of such a winding spindle is effected by friction, which arises between the contact zone of the driven contact roller and the winding tube. In this case, thread reserve windings can advantageously be deposited in a winding region of the winding tube, which is covered over at the non-contact zone of the contact roller.

LIST OF REFERENCE NUMBERS

1 machine frame

2 spool turrets

3.1 winding spindle

3.2 winding spindle

4.1, 4. 2 spindle drive

5 turret drive

6.1, 6. 2, 6.3, 6.4 winding tube

7.1, 7. 2, 7.3, 7.4 Means of capture

8 contact roller

9 diameter step

10, 10 .1, 10.2 contact zone

11, 11 .1, 11.2 Non-contact zone

12 swingarm

13 traversing device

14, 14 .1, 14.2 thread

15 thread guides

16 auxiliary guidance means

17 coil area

18 coil

19 thread reserve winding

20 Anwickelbereich

21 pivot bearings

22 guide plate

23 roller drive

Claims

claims

1. Winding device of at least one thread (14) to a coil (18) with a drivable winding spindle (3.1) for receiving a winding tube

(6.1), with a traversing device (13) for reciprocating the thread (14) and with a contact roller (8) for depositing the thread (14) on the circumference of the spool (18), wherein the contact roller (8) with a contact zone

(10) on the winding tube (6.1) or the coil (18) rests, characterized in that the contact roller (8) in the region of the winding tube (6.1) a non-contact zone

(11) which is formed in relation to the contact zone (10) with a smaller outer diameter and on the circumference of the winding tube (6.1) covers a Anwickelbereich (20) for receiving a yarn reserve winding (19).

2. Winding device according to claim 1, characterized in that the non-contact zone (11) and the contact zone (10) on the circumference of the contact roller (8) by a diameter stage (9) are separated and that the

Diameter stage (9) in its position on the contact roller (8) offset from the coil (18) is formed.

3. Winding device according to claim 1 or 2, characterized in that the outer diameter of the non-contact zone (11) is smaller by an amount in the range of 0.5 mm to 4 mm than the outer diameter of the contact zone (10).

4. Winding device according to one of claims 1 to 3, characterized in that the contact roller (8) on the circumference alternately a plurality of contact zones (10.1, 10.2) and non-contact zones (11.1, 11.2), wherein on the winding spindle (3.1) a plurality of winding tubes (6.1, 6.3) are held to receive a plurality of coils (18.1, 18.2).

5. Winding device according to one of claims 1 to 4, characterized in that the winding spindle (3.1) cantilevered by a spindle carrier (2) is held, which spindle carrier (2) for guiding the winding spindle (3.1) by a drive (5) is movable ,

6. Winding device according to claim 5, characterized in that the spindle carrier is formed by a spool turret (2), which Spulre volver (2) carries a second winding spindle (3.2), wherein both winding spindles

(3.1, 3.2) alternately interact with the contact roller (8).

7. Winding device according to one of claims 1 to 6, characterized in that the contact roller (8) with both ends is rotatably supported on a rocker (12), which rocker (12) is pivotally connected to a machine frame.

8. Winding device according to one of claims 1 to 7, characterized in that the winding tube (6.1) at a the Anwickelbereich (20) end facing a catch (7.1) is assigned, which with an auxiliary guide means (16) for catching and Anwickeln the thread (14) cooperates.