WO2006125464A1

WO2006125464A1 - Device for guiding and transporting several threads

Info

Publication number: WO2006125464A1
Application number: PCT/EP2005/007717
Authority: WO
Inventors: Michael Pyra; Thomas Wortmann; Markus Löhr; Eckart Homuth
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2005-05-21
Filing date: 2005-07-15
Publication date: 2006-11-30
Also published as: EP1883722A1; CN101258275A

Abstract

The invention relates to a device for guiding and transporting several threads in several adjacent delivery points on a textile machine. In each delivery position a looping delivery gear (3) is formed by a driven roller sleeve (15.1) and a freely rotating jockey roller (16.1), provided for the roller sleeve, whereby the roller sleeve and the jockey roller have multiple turns of the thread (30) provided for the delivery point around them. The looping delivery gear is driven whereby the roller sleeves of a group of adjacent delivery points or the roller sleeves of all delivery points are connected to a drive means and are synchronously driven for the transport of the threads. According to the invention, in order to be able to drive each roller sleeve with essentially identical circumferential speeds, the drive means is formed by a driveshaft (17) on the circumference of which the roller sleeves are fixed at a separation from each other.

Description

Device for guiding and conveying a plurality of threads

The invention relates to a device for guiding and conveying a plurality of threads in a plurality of juxtaposed delivery points of a textile machine according to the preamble of claim 1.

A generic device eats from EP 0 284 945 Al known.

In order to be able to treat a thread in a textile machine in a plurality of processing stations formed in succession, devices for guiding and conveying the threads are required. In this case, a tensile force is generated in each delivery point on a thread to promote the thread at a predetermined speed. In the prior art, two types of devices are known for this purpose. A first type, which are also known as so-called Klemmlieferwerke, generate the tensile force on the thread by a clamp. For this purpose, a pressure roller or a belt guided over rollers is held on the circumference of a driven delivery shaft and pressed onto the surface of the delivery shaft. In the nip formed between the delivery shaft and the pressure roller or the belt, the thread to be conveyed is guided. Such a device is known for example from DE 198 55 473 Al. Such Klemmlieferwerke are preferably used in textile machines, in which a plurality of threads must be performed in parallel in multiple delivery points. All threads can be conveyed in parallel by a driven delivery shaft. A disadvantage of such delivery shafts, however, is the clamping of the thread, which can cause inevitable damage to the thread.

In contrast, another type of device is known in which the tensile forces are generated by wrap friction. Such a device, from which the invention proceeds, is known, for example, from DE 101 23 042 A1. Such Umschlingungslieferwerke, which are referred to in the art as godets, have a driven godet casing and arranged at a distance from the godet casing freely rotatable Beilaufrolle. In the Delivery point, the yarn is stirred with several wraps around the battress roller and the godet casing. In this case, the thread is guided in several thread loops around the delivery shaft and the Beilaufrolle, so that the individual thread ^¬ sections partially wrap around the circumference of the godet shell. The number of thread loops and thus the number of Teilumschlingungen be used to transmit a set by the godet peripheral speed by friction on the thread. Such Umschlingungslieferwerke are preferably used as a single delivery, since the threads must be performed for application in a circular motion around the axler roll and the delivery shaft. The Umschlingungslieferwerke, in which the tensile force generated by wrap friction, are particularly suitable for gentle thread guidance and promotion of a thread. For use in textile machines to guide a variety of threads Umschlingungswerke but require a lot of equipment, since each godet must be driven by a separate driven delivery shaft.

_**

Thus, from EP 0 284 945 a device for guiding and conveying a plurality of threads is known in which the Umschlingungslieferwerke adjacent delivery points are synchronously driven via a common belt drive. For this purpose, the supply shafts connected to the godet casing are connected together at a drive end via a belt. The belt is driven by an electric motor. However, such group drives are only functionally limited to a few delivery points due to slippage.

It is an object of the invention to provide a device for guiding and conveying a plurality of threads in a plurality of juxtaposed delivery points of a textile machine of the generic type, in which the Umschlingungslieferwerke can be driven in the delivery points with high uniformity by the drive means. This object is achieved according to the invention in that the drive means is formed by a drive shaft, on the circumference of the godet coats are held at a distance from each other against rotation.

Advantageous developments of the invention are defined by the features and feature combinations of the subclaims.

The invention is characterized in that the wrapping delivery mechanisms in the delivery points of the textile machine can be jointly driven in such a way that each godet casing rotates at the same circumferential speed. The mechanical coupling by means of a drive shaft, a plurality of Umschlingungslieferwerke can be controlled simultaneously. In each delivery point of the textile machine, the threads are conveyed at the same speed particularly gentle on the thread.

According to an advantageous embodiment of the invention it is proposed to form the drive shaft as a hollow shaft. In this case, the godet coats can preferably be formed directly by individual sections of the hollow shaft. However, there is also the possibility that the godet coats are attached to the circumference of the hollow shaft.

In order to protect the regions of the drive shaft between the delivery points with respect to winder formation during yarn breakage, the regions according to an advantageous development of the invention are covered to the outside by additional covering means. The rotating during operation drive shaft is thus covered between the godets and not freely accessible.

At a plurality of delivery points within the textile machine, the drive shaft is preferably stored in several storage locations between the delivery points. The godet coats can thereby be simultaneously driven synchronously on a plane at a larger number of delivery points. That's the way it is It is known that in false twist texturing machines a total of 216 delivery points are arranged side by side for conveying the same number of threads.

According to a further preferred embodiment of the invention, the drive shaft is driven by an electric motor. Here, the drive can be done directly or indirectly via the intermediary of a transmission.

Usually, in the Umschlingungslieferwerken the godet coat delivered a freely rotatable axler roll whose axis is aligned slightly inclined to the axis of the godet casing. However, it is also possible to form the Beilaufrollen by individual shaft sections of a Beilaufwelle. The Beilaufwelle is designed as a rotatable shaft with drive, the serving for thread guide shaft sections preferably have thread guide grooves. In place of the guide grooves, however, additional guide means such as comb-shaped yarn guide could be used.

In order to obtain a thread guide which is easy to use for the operator, especially during the initial application of the thread, it is further proposed that each delivery point is assigned one of several application devices for the initial application of the thread. Thus, even with a continuous drive shaft, the application of the thread in the delivery point with multiple thread loops around the godet and the Beilaufrolle in a simple manner possible.

Thus, the application device could be formed by a plurality of movably guided injectors, which interact alternately to create the thread.

However, it is also possible that the application device has a movable yarn guide, which is drivable in a guideway enclosing the godet casing and the Beilaufrolle. The device according to the invention will be explained with reference to some exemplary embodiments below with reference to the accompanying drawings.

They show:

Fig. 1 shows schematically a cross-sectional view of a first embodiment of the device according to the invention within a textile machine Fig. 2 shows schematically a side view of Ausrührungsbeispiels the device according to the invention of Fig. 1 Fig. 3 schematically shows a side view of another embodiment of the device according to the invention

4 schematically shows a cross-sectional view of a further embodiment of the device according to the invention with an application device FIG. 5 shows a schematic side view of the embodiment from FIG. 4 FIG. 6 shows schematically a cross-sectional view of a further embodiment of the device according to the invention with a application device

In Fig. 1, a first embodiment of the device according to the invention is shown in a cross-sectional view within a textile machine. The textile machine is shown in Fig. 1 in a cross section. Here, a plurality of process units of a processing station to a yarn course are arranged one behind the other within a machine frame 2 to edit a deducted from a supply bobbin thread, to texture in this case. As process units, a heating device 5, a cooling device 6, a texturing unit 7, a Verwirbelungseinrichrung 9, a secondary heater 11 and a winding device 13 are arranged one behind the other in the machine frame 2. The process units are assigned several delivery mechanisms for guiding and conveying a thread. Thus, a first delivery mechanism 1 is provided on an inlet side, in which a Umschlingungslieferwerk 3 is provided to deduct the thread 30 from a supply spool 4. The feed bobbin 4 is held in a gate 29 for this purpose. The wrapping delivery unit 3 is hereby replaced by a godet tel 15.1 and a companion roll 16.1 is formed, which are repeatedly swallowed up by the thread 30 to ^¬.

For drawing the thread 30, the first delivery mechanism 1 is followed by a second delivery mechanism 8. For further guidance and promotion, a third delivery mechanism 10 is provided in front of the secondary heater 11 and a fourth delivery mechanism 12 in front of the take-up device 13. The delivery mechanisms 8, 10 and 12 are designed substantially identical to the first delivery mechanism 1, so that reference may be made to the aforementioned description.

Within the processing point, the thread 30 is texturized and drawn in a so-called false twist zone between the first delivery mechanism 1 and the second delivery mechanism 8. For this purpose, false twist is generated in the thread 30 by the texturing unit 7, which propagates to the inlet side of the heating device 5. The false twist is fixed by the thermal treatment in the heater 5 and the cooling device 6. Subsequently, a swirling takes place in the swirling device 9 and a shrinking treatment in the secondary heating device 11. At the end, the thread 30 is wound up into a reel 14 in the winding device 13. In total, three reeling devices are arranged one above the other in a tiered manner, since the reeling device extends over a total of three adjacent processing stations.

The textile machine shown in Fig. 1 has a plurality of processing stations which extend side by side in a machine longitudinal side. The machine longitudinal side here runs transversely to the plane of the drawing of FIG. 1. A deratige machine is known for example from WO 03/000973, so that reference is made to further explanation of this document.

The first delivery mechanism 1 is designed for guiding and conveying the threads of all processing stations according to the device according to the invention. To further

Explanation of this device is additionally taken with reference to FIG. 2. In Fig. 2 is the exemplary embodiment of the device according to the invention shown schematically in a side view. In each delivery point, the delivery mechanism 1 is formed by a godet casing and a trailer roll. In Fig. 2, the ga- lette coats of the first three delivery points by the reference numerals 15.1, 15.2 and 15.3 and the ordered addition rollers by the reference numerals 16.1, 16.2 and 16.3 are marked. The godet casing 15.1, 15.2 and 15.3 are rotatably connected to a drive shaft 17. The drive shaft 17 extends over the entire length of the machine, wherein a total of a number of n delivery points is present within the textile machine in order to convey a number of n threads at the same time. In Fig. 2 thus the godet coat of the last and penultimate delivery point are 15.n and 15. n - 1 and the associated Beilaufrollen 16.n and 16.n - 1 shown. The drive shaft 17 is coupled with its drive end 35 with an electric motor 18. The electric motor 18 may in this case be coupled directly to the drive shaft 17 or indirectly via a gear to the drive shaft 17. Inside the machine, the drive shaft 17 is mounted at several bearings. Here are the bearings 20.1 and 20.2 shown with the bearings 21.1 and 21.2 as an example.

The follower rollers 16.1 to 16.n are each freely rotatably mounted in an axle 36. The axles 36 are fixedly coupled to the machine frame 2.

The drive shaft 17 has between the godet coats, for example, in the area between the godet coats 15.2 and 15.3 covering means, which are formed for example as an upper cover plate 19.1 and a lower cover plate 19.2. Thus, the free portions of the drive shaft 17 are shielded between the godets against the environment, so as to avoid filament winding by an incident thread.

In the apparatus for forming the first delivery system 1 shown in FIGS. 1 and 2, a thread 30 is conveyed in each processing station by multiple wrapping through the godet casing assigned to the respective delivery location. The godet coats 15.1 to 15.n are driven together by the drive shaft 17.

However, there is also the possibility within the textile machine to combine several godet coats into a group, which are jointly driven by one of several drive shafts. In that regard, for example, several sections can be created within the textile machine, which are independently controllable and driven.

FIG. 3 shows a further exemplary embodiment of the device according to the invention, as could be used, for example, in a textile machine according to FIG. The device for guiding and conveying a plurality of threads is shown schematically in FIG. 3 in a longitudinal sectional view. However, only the first three delivery points are shown here. At each delivery point, a wrap-around delivery unit is formed by a godet jacket and a supplementary roll. The godet coats 15.1, 15.2 and 15.3 of the first three delivery points are formed by shaft sections on the drive shaft 17 designed as a hollow shaft. The drive shaft 17 is associated with a Beilaufwelle 31, 15.1, 15.2 and 15.3 each wave sections to form the Beilaufrollen 16.1, 16.2 and 16.3 in the area of the godets. For thread guidance, the Beilaufrollen 16.1, 16.2 and 16.3 formed on the Beilaufwelle 31 more on the circumference uniformly distributed yarn guide grooves 37. The Beilaufwelle 31 is rotatably mounted and preferably coupled to a drive. For this purpose, by way of example, a bearing 32 is shown between the shaft sections forming the by-pass roller 16.1 and 16.2. The function of the device shown in Fig. 3 is substantially identical to the aforementioned embodiment, so that reference is made to the aforementioned description of Fig. 2 at this point.

FIGS. 4 and 5 show a further exemplary embodiment of the device according to the invention using the example of a delivery point. Here, the delivery point is a

Mooring device associated with the first application of the thread. 4, the output is Guide example schematically in a cross-sectional view and in Fig. 5 schematically ^¬ table shown in a side view. Insofar as no explicit reference is made to one of the figures, the following description applies to both ^FIGSu ren.

The device has in each delivery point in each case a godet casing 15.1 and a Beilaufrolle 16.1. The godet casing 15.1 is rotatably mounted on the circumference of a drive shaft 17. The drive shaft 17 extends along the machine and is connected in each adjacent delivery point with a separate godet jacket. The axlift 16.1 is freely rotatably mounted on an axis 36 connected to a machine frame 2.

The godet jacket 15.1 and the Beilaufrolle 16.1 is associated with a jig 22. The application device 22 has two pivotally mounted on a pivot axis 28 guideways 27.1 and 27.2. The guideways 27.1 and 27.2 are feasible in a mooring to a closed circumferential guideway. Within the guideway, a yarn guide 26 is guided, which can be guided by means of a drive element, not shown here, continuously in the guideway in the counterclockwise direction. As shown in FIGS. 4 and 5, the yarn guide 26 engages with a leader end in the yarn path of a yarn guided by a stationary inlet yarn guide 34 to a suction gun 25. As the movement of the thread guide 26 progresses, a thread loop is placed around the godet jacket 15.1 and the auxiliary roll 16.1. This process can be repeated until the desired number of thread wraps are applied to the wrap-around delivery plant.

FIG. 6 shows a further exemplary embodiment of a device according to the invention with an application device in a delivery point. The exemplary embodiment is shown in FIG. 6 in a cross-sectional view, wherein the looping delivery mechanism is essentially identical to the aforementioned example by a driven godet casing and a freely rotatable roller shutter. Ie is formed. The godet 15.1 and the Beilaufrolle 16.1 is laterally assigned a Stelleninjektor 23, which is connected to a bladder at a Abfallbehäl ^¬ ter. The Stelleninjektor 23 is pivotally supported by the pivot arms 24.1 and 24.2 and can be positioned in a lower application position below the godet casing 15.1 and in an upper application position above the Beilaufrolle 16.1. In the lower application position as well as in the upper application position, the location injector 23 is assigned a respective cutting device 33.1 and 33.2.

For the first application of a thread, which is supplied via a Einlauffadenführer 34 and a manually guided suction gun 25, first the suction gun 25 and the Stelleninjektor 23 is brought together in the lower application position such that the thread 30 is passed from the suction gun 25 to the Stelleninjektor 23. Once the Stelleninjektor 23 has detected the thread, there is a separation of the thread piece between the Stelleninjektor 23 and the Saupistole 25 by the cutter 33.1.

Now the Stelleninjektor 23 is guided over the Schenk arms 24.1 and 24.2 in the upper application position. In the upper contact position, a transfer of the thread from the Stelleninjektor 23 now takes place to the Saugpitstole 25, wherein after taking over the thread through the Saupistole 25 again a thread separation in the thread piece between the suction gun 25 and the Stelleninjektor 23 is performed. Now the suction gun is guided in the lower application position, so that a first thread loop is placed around the godet casing 15.1 and the Beilaufrolle 16.1. This process is repeated as often as the number of required loops on the wrapping delivery plant.

The embodiments of a Anlegevor- direction shown in FIGS. 4, 5 and 6 are only exemplary. Basically, the thread could be automated, for example, by a pneumatic conveyor in a loop around the thread

Galettenmantel and the by-pass roller are guided. Likewise, a fully automated tized applicator, for example, possible in that the manual suction gun shown in Fig. 6 is also reciprocated via a pivoting mechanism between a lower and an upper contact position.

LIST OF REFERENCE NUMBERS

1 first delivery plant

2 machine frame

3 wrapping delivery plant

4 feed bobbin

5 heating device

6 cooling device

7 texturing unit

8 second delivery plant

9 swirling device

10 third delivery plant

11 secondary heater

12 fourth delivery plant

13 take-up device

14 coil

15.1, 15 .2, 15.3 ... 15.n-l, 15.n godet mantle

16.1, 16 .2, 16.3 ... 16n-l, 16.n Beilaurrolle

17 drive shaft

18 electric motor

19.1, 19 .2 Cover plate

20.1, 20 .2 bearings

21.1, 21. .2 storage

22 docking device

23 position injector

24.1, 24. 2 Swing arm

25 suction gun

26 thread guide

27.1, 27. 2 guideway

28 pivot axis

29 gates 30 threads

31 wedge shaft

32 Storage 33.1, 33.2 Cutting device

34 inlet guide

35 drive end

36 axis

37 thread guide grooves

Claims

claims

1. An apparatus for guiding and conveying a plurality of threads in a plurality of juxtaposed delivery points of a textile machine, wherein in each of the delivery point a Umschlingungslieferwerk (3) with a driven godet casing (15.1) and with the Gettettenmantel (15.1) associated freely rotatable Beilaufrolle (16.1 ), wherein the godet casing (15.1) and the Beilaufrol- Ie (16.1) are looped several times from the delivery point associated thread (30) and wherein the godet casing (15.1, 15.2) of a group of adjacent delivery points or the godet casing (15.1, 15.n) of all delivery points connected to a drive means and are driven synchronously for conveying the threads, characterized in that ^' the drive means by a drive shaft (17) is formed, at the periphery of the godet casing (15.1, 15.2) held at a distance from each other against rotation are.

2. Apparatus according to claim 1, characterized in that the drive shaft (17) is designed as a hollow shaft, wherein the godet tenmäntel (15.1, 15.2) are formed by individual portions of the hollow shaft.

3. Apparatus according to claim 1 or 2, characterized in that the drive shaft (17) in the areas between the godet coats (15.2, 15.3) are associated with a plurality of cover means (19.1, 19.2) for protection against filament winding.

4. Device according to one of claims 1 to 3, characterized in that between the delivery points a plurality of bearing points (20.1, 20.2) for supporting the drive shaft (17) are formed.

5. Device according to one of claims 1 to 4, characterized in that the drive shaft (17) by a drive end (35) with an electric motor (18) is connected.

6. Device according to one of the preceding claims, characterized in that the Beilaufrollen (16.1, 16.2) by individual shaft sections of a Beilaurwelle (31) are formed.

7. Device according to one of claims 1 to 6, characterized in that each delivery point is associated with one of several application devices (22) for the first application of the thread (30).

8. The device according to claim 7, characterized in that the application device comprises a plurality of movably guided injectors (23, 25) which interact alternately for applying the thread (30).

9. The device according to claim 7, characterized in that the application device has a movable yarn guide (26) which in a godet casing (15.1) and the Beilaufrolle

(16.1) surrounding guideway (27.1, 27.2) is drivable.