EP2145848B1 - False twist texturing machine - Google Patents

Description

The invention relates to a false twist texturing machine for texturing a plurality of multifilament threads according to the preamble of claim 1.

A generic Falschdralltexturiermaschine is for example from the WO 2007 / 036242A1 and from the DE 10123042 A1 known.

When false twist texturing a thread, the thread is first subtracted from a submitted original bobbin. The thread of the supply spool was previously made in a melt spinning process. In order to prepare the melt-spun multifilament yarn for a textile application, the yarn is stretched and textured simultaneously after being pulled off the supply spool. After texturing, a post-treatment is carried out, for example, in the form of a shrinkage treatment, so that a finished textured and treated yarn is wound up at the end to form a bobbin. In order to guide and stretch the thread during treatment, several delivery mechanisms are provided. Thus, the known false twist texturing machine has a first delivery mechanism which forms a combined texturing / draw zone with a downstream second delivery mechanism. The second delivery mechanism is followed by a third delivery mechanism, through which an aftertreatment zone is determined. The third delivery mechanism is followed by the take-up device, through which the thread is wound into a bobbin.

For guiding and stretching the thread, basically two types of delivery mechanisms are used. A first type of delivery works is formed by the so-called Umschlingungslieferwerke. The wrappers are based that the tensile forces are generated on the thread by a multiple wrapping of the thread at the Umschlingungslieferwerk. For this purpose, a godet and a short distance Beilaufrolle is preferably used on the coats of which the thread is guided with several wraps.

A second type of delivery works are the so-called Klemmlieferwerke. The Klemmlieferwerke based on the fact that the thread is guided in a nip between a driven drive shaft and a clamping element, such as a pressure belt or a pressure roller. Here, the thread is guided with a partial looping on the jacket of the drive shaft. The clamping element is located in the wrap around the circumference of the drive shaft, wherein the clamping element and the drive shaft to move in the same direction.

In the known false twist texturing machine, it is common practice to use one type of delivery mechanism for guiding and drawing the threads. However, it has now been shown that each type of delivery works has advantages and disadvantages in the management of the threads.

It is therefore an object of the invention to develop a false twist texturing machine of the generic type such that the threads are texturable and treatable with high quality.

Another object of the invention is to ensure a continuous as possible continuous treatment of the thread even during a manual bobbin change.

The object is achieved according to the invention for the generic false twist texturing machine in that the first delivery mechanism and the second delivery mechanism are each designed as a looping delivery mechanism and that the third delivery mechanism is designed as a clamping delivery mechanism.

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

The invention is characterized in that the texturing and the aftertreatment of the thread on each of the filaments of the thread is uniformly generated. An additional external mechanical stress on the filaments of the thread by a clamping element of a Klemmlieferwerkes does not take place until after the treatment of the thread. The yarn is gently guided through pure Umschlingungslieferwerke in the texturing and drawing zone and in the inlet of the post-treatment zone. Only after the aftertreatment of the thread has been completed and the thread has its final textured structure, the third delivery mechanism is designed as a terminal delivery to guide the thread. The pre-arranged terminal of the take-up device has the particular advantage that the thread tension in the aftertreatment zone can be kept substantially constant. The bobbin change carried out in the take-up devices, in which the thread is guided briefly to a suction a waste container, advantageously lead to no Verschlappung within the aftertreatment zone. By the Klemmlieferwerk the supply of the thread to the take-up device remains substantially constant. The false twist texturing machine according to the invention is thus particularly suitable for carrying out a semi-automatic operation with manual spool changes. In principle, however, the arrangement is not limited to semi-automatic false twist texturing machines. On the contrary, even automatic bobbin change can be advantageous to run with a take-up of upstream clamping delivery.

In order to be able to set different yarn tension states in the texturing / draw zone and the aftertreatment zone, according to an advantageous development, the first wrapper delivery mechanism, the second wrapper delivery mechanism and the clamp delivery mechanism are driven by separate electric motors. Thus, the delivery speeds at the delivery plants can be adjusted and controlled independently of each other.

The drive of the clamping delivery mechanism is preferably designed such that the clamping delivery unit has a drive shaft extending over a plurality of processing points, which is connected at one end to the electric motor. This makes it possible to realize a central drive of the clamping delivery unit, in order to simultaneously guide a large number of threads in the respective associated processing points.

However, there is also the possibility that the drive shaft is divided into several sub-waves within the machine, wherein the sub-waves extend over a plurality of processing points and are independent of adjacent sub-waves drivable. In this way, individual groups of processing points can be summarized in terms of drive, so that the clamping delivery device has a plurality of separately controllable drives within the machine.

Basically, it should be mentioned at this point that the clamping delivery mechanism could also be advantageously designed as an individually driven within the processing station delivery plant. For this purpose, for example, the Klemmlieferwerk form by a godet, on the periphery of a pressure roller or a pressure belt for conveying the thread is applied.

As a clamping element, the clamping delivery unit preferably has a rotatable pressure roller, which is held per processing point and per thread on the circumference of the drive shaft for clamping the thread. This allows particularly slip-free transmissions and guides of the thread can be achieved.

In order to ensure the most user-friendly guidance of the thread at the Umschlingungslieferwerken, according to an advantageous embodiment of the invention, the first Umschlingungslieferwerk and the second Umschlingungslieferwerk within a processing station individually and independently of adjacent Umschlingungswerken work of adjacent processing stations formed drivable.

For this purpose, the Umschlingungslieferwerke are preferably formed by a respective driven godet and a rotatably mounted Beilaufrolle, so that at the beginning of the process, the application of the thread in a simple manner is executable.

In principle, however, it should also be mentioned here that such Umschlingungslieferwerke can also be formed by an extending in the machine over a plurality of processing stations drive shaft to which a plurality of spaced-apart godet coats are attached.

The operation of the false twist texturing machine can be further improved in that according to a preferred embodiment, the Umschlingungslieferwerke are arranged within the processing station on opposite machine frame parts, which machine frame parts form an operating passage between them. Thus, the Umschlingungslieferwerke can be advantageously operated by an operator.

To realize a vertical as possible aftertreatment zone, which is particularly suitable for shrinkage treatment, the second Umschlingungslieferwerk and the Klemmlieferwerk are arranged on the machine frame with each other, wherein the Klemmlieferwerk is located within the processing point below the take-up. This makes it possible to operate not only the delivery mechanisms but also the take-up device out of the operating gear.

In this case, an auxiliary device for carrying out bobbin changes is advantageously assigned to a group of take-up devices of a plurality of processing stations. In manual bobbin replacement these auxiliary devices are usually formed by a suction device and a compressed air connection for supplying a manually guided Fadensaugeinrichtung. In automatic bobbin changing usually additional thread guide devices are used to transfer the thread in the suction device.

The invention will be explained in more detail with reference to some embodiments of the false twist texturing machine according to the invention with reference to the accompanying figures.

Fig. 1

schematisch eine Querschnittsansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Falschdralltexturiermaschine,

Fig. 2

schematisch eine Teilansicht des Ausführungsbeispiels aus Figur 2,

Fig. 3

schematisch eine Querschnittsansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Falschdralltexturiermaschine,

Fig. 4

schematisch eine Teilansicht des Ausführungsbeispiels aus Figur 3.

They show:

Fig. 1

1 is a schematic cross-sectional view of a first embodiment of the false twist texturing machine according to the invention;

Fig. 2

schematically a partial view of the embodiment of FIG. 2 .

Fig. 3

1 is a schematic cross-sectional view of another embodiment of the false twist texturing machine according to the invention;

Fig. 4

schematically a partial view of the embodiment of FIG. 3 ,

In the FIGS. 1 and 2 a first embodiment of the false twist texturing machine according to the invention is shown. The FIG. 1 shows a cross-sectional view of the false twist texturing and FIG. 2 a partial view of the juxtaposed in the machine winding devices. Unless express reference is made to any of the figures, the following description applies to both figures.

In the FIG. 1 illustrated cross-sectional view represents the yarn path in a processing point, in which the thread drawn from a supply spool, guided, textured, stretched and wound into a coil. The process units required for this purpose are arranged in a multi-part machine frame 7 to a an operating gear 27 teilumschließenden yarn path. The false twist texturing machine has longitudinally - in the FIG. 1 is the plane of the drawing equal to the transverse plane - a variety of processing points in order to texturize and stretch a thread in each processing point. Typically, more than 200 processing stations are arranged next to each other. Since the construction of the processing points is identical in this embodiment, the following are the facilities of one of the processing points with reference to the representation in FIG FIG. 1 described.

To remove a thread 11 from a supply spool 2 per processing point a presentation point 1 is provided. The presentation point 1 is formed in a gate frame 6, on which a group of presentation points 1 are held. At a gate frame 6 facing machine frame part 7.1, a first delivery mechanism 3 is arranged. The first delivery mechanism 3 is followed by a heating device 4 and a cooling device 5 in the yarn path. The heating device 4 and the cooling device 5 are arranged on a central machine frame part 7.2, which spans the operation gear 27. In the further threadline follows a false twisting device 8 and a second delivery 9. The false twisting device 8 and the second delivery 9 are arranged on a further machine frame part 7.3, wherein between the machine frame parts 7.1 and 7.3 of the operating gear 27 is formed. The second delivery mechanism 9 is followed by a set heating device 13 and a third delivery mechanism 14. For this purpose, the third delivery mechanism 14 is arranged below the second delivery mechanism 9, so that a vertically aligned aftertreatment zone is established between the two delivery mechanisms.

The third delivery mechanism 14 is followed by a winding device 10.1 within the processing station, in which the thread 11 is wound into a coil 12. The winding device 10.1 has for this purpose a movable bobbin holder 25 and a driven drive roller 26. The drive roller 26 is preceded in the thread running a traversing device, not shown here, which reciprocates the thread before filing on the spool within a traverse stroke and forth, so that a cross-wound bobbin is wound in the winding device. The Spool 12 abuts with contact on the periphery of the drive roller 26 and is driven at a constant peripheral speed for winding the thread 11.

Since the take-up device require a greater width within the processing station than the processing units arranged upstream of the take-up device, the take-up devices of adjacent processing stations are arranged one above the other in the form of a stack. In this exemplary embodiment, the take-up devices 10.1, 10.2 and 10.3 are arranged one above the other in the machine frame 7, wherein the process units upstream of the take-up devices 10.1 to 10.3, such as the false twist device 8 or the cooling device 5, are kept side by side.

In order to be able to perform a high-quality texturing and drawing on the multifilament yarn, the first delivery mechanism 3 is formed by a wrapping delivery unit 15.1 and the second delivery mechanism 9 by a second wrapping delivery mechanism 15.2. In this embodiment, the Umschlingungslieferwerke 15.1 and 15.2 are identical and each have a godet 16.1 and 16.2 and a Beilaufrolle 17.1 and 17.2. The godets 16.1 and 16.2 are each connected to separate godet motors 19.1 and 19.2. The Umschlingungslieferwerke 15.1 and 15.2 are so within the processing station individually and independently of adjacent Umschlingungslieferwerken adjacent processing points drivable. In particular, this makes it possible to carry out the operation at the start of the process or during a yarn breakage in a simple manner. The godet motors 19.1 assigned to the first delivery mechanism 3 can advantageously be driven in groups via a group converter.

To guide the thread 11 is guided with several wraps on the rotatable coats of the godet 16.1 and 16.2 and the Beilaufrolle 17.1 and 17.2. In order to be able to serve both wrapping delivery units 15.1 and 15.2 out of the operating gear 27, especially at the beginning of the process, the wrapping delivery mechanisms 15.1 and 15.2 are arranged within the processing station on the machine parts 7.1 and 7.2. In this case, the false wrap device 8, the cooling device 5 and the heating device 4 are arranged within the texturing / drawing zone in such a way that the thread 11 can be guided substantially without additional thread guide elements. In addition to the pure wraps of the thread at the Umschlingungslieferwerken 15.1 and 15.2 can thus be a total of thread-saving guidance and treatment for texturing and stretching of the thread realize.

In this case, the thread 11 passes in the freshly extruded state directly via the second Umschlingungslieferwerk 15.2 in the aftertreatment zone in which the set-heater 13 is arranged. In order to obtain a uniform relaxation of the thread within the set heating device 13, the thread with the lowest possible thread tension between the Umschlingungslieferwerk 15.2 and the third delivery 14 is performed. The third delivery mechanism 14 is designed for this purpose as a Klemmlieferwerk 20, in which the thread is guided in a nip between a drive shaft 21 and a pressure roller 22. The pressure roller 22 is held by a movable clamping arm 23 on the circumference of the driven drive shaft 21. The thread 11 is guided with a partial looping on the circumference of the drive shaft 21 and continuously conveyed by the interaction of the drive shaft 21 with the pressure roller 22.

The take-up device upstream clamping delivery unit 20 is thus particularly suitable to keep the yarn tension in the treatment zone constant regardless of the respective operating state of the processing site. Even manual bobbin change, in which the thread is separated by an operator and temporarily fed to a suction device, remain without effect for the aftertreatment zone.

Like from the FIG. 2 shows, the drive shaft 21 of the clamping delivery 20 extends over several processing points within the machine. A total of 18 processing points are shown, which contain the 6 groups of stacked superposed Aufwickeleinrichtungen. The last group of winders is exemplified by the reference numerals 10.16, 10.17 and 10.18. One end of the drive shaft 21 is coupled to an electric motor 24, so that a plurality of threads are guided simultaneously in the processing points by the drive shaft 21. For each processing point, the terminal delivery 20 has a pressure roller 22, which can be held on the clamping arm 23 either with or without contact on the circumference of the drive shaft 21. Thus, the threads can be created individually in the individual processing points after a thread break. The drive shaft 21 is rotatably supported in the machine frame part 7.3 by a plurality of bearings. In Fig. 2 the bearings 34.1 and 34.2 are shown by way of example.

Like from the FIGS. 1 and 2 Further, a group of take-up devices 10.1 to 10.3 are each assigned an auxiliary device 28 in order to be able to perform a manual bobbin change in one of the take-up devices by an operator. As auxiliaries 28, a suction connection 29 and a compressed air connection 30 are shown here by way of example. Thus, a manually guided suction device can be connected, through which the thread is performed during the bobbin change. The compressed air supply to the suction device via the compressed air connection 30. The thread waste can then be discharged through the exhaust port 29. The suction port 29 is formed on a suction pipe 36 which extends along a machine longitudinal side and is connected to a Garnabfallbehälter. The compressed air connection 30 is arranged on a compressed air line 35, which extends along the machine longitudinal side and is connected to a compressed air source.

In the Figures 3 and 4 another embodiment of a false twist texturing machine is shown. In FIG. 3 the embodiment is in a cross-sectional view and in FIG. 4 shown in a partial view of a machine longitudinal side. Unless an explicit reference is made to one of the figures, the following description applies to both figures.

The embodiment is essentially identical to the previous embodiment FIG. 1 and 2 , so that only the differences are explained here. The embodiment also has a plurality of processing points to each stretch a submitted thread 11, to texture and post-treat. Compared to the aforementioned embodiment takes place in the post-treatment zone between the second delivery 9 and the third delivery 14 a multi-stage aftertreatment. For this purpose, a turbulizer 33 is arranged downstream of the second delivery mechanism 9, in which a turbulence generated by compressed air is carried out on the textured yarn. Such swirling of the textured thread enables a residual twist remaining on the outlet side of the fascia device 8 to be dissolved in the thread.

The swirling device 33 is downstream of a fourth delivery mechanism 32 in the yarn path, so that in particular the thread tension for swirling the thread 11 between the third delivery mechanism 14 and the fourth delivery mechanism 32 is individually adjustable. The fourth delivery mechanism 32 is followed by the set device 13 and the third delivery mechanism 14 in the threadline in order to be able to connect a shrinking treatment.

The set heaters 13 upstream delivery mechanisms 3, 9 and 32 are each formed by Umschlingungslieferwerke 15.1, 15.2 and 15.3. Each of the Umschlingungslieferwerke 15.1 to 15.3 is constructed identically, so that at this point to the above description can be made to avoid repetition. Thus, the Umschlingungslieferwerk 15.3 is formed by the galette 16.3, the Beilaufrolle 17.3 and the godet motor 19.3.

The upstream of the take-up device 10.1 delivery mechanism 14 is also designed as Klemmlieferwerk 20 in which a drive shaft 21 cooperates within the processing point with a pressure roller 22. Contrary to the embodiment according to FIG. 2 is the drive shaft 21 in the embodiment according to FIG. 4 divided into several sub-waves 31.1 and 31.2, each of which is assigned a separate electric motor 24.1 and 24.2. In this way, the clamping delivery unit 20 can be driven individually for a plurality of groups of processing stations.

The embodiments of the false twist texturing machine according to the invention according to the FIGS. 1 to 4 are exemplary in the construction and arrangement of their facilities and processing units for treating, processing and winding the threads. For example, the false twist devices are preferred Friktionsscheibenaggregate formed, each processing point is assigned an aggregate. The cooling devices 5 can be formed both by cooling rails or by cooling tubes, on which at least one thread or several threads can be cooled simultaneously. Likewise, the heating devices 4 can be formed by so-called high-temperature heaters in which the filaments are passed over heated surfaces having a surface temperature above the melting temperature of the filament. Alternatively, however, can be used by steam heated heaters. Regardless of the type of heating in the heaters one or more threads can be tempered at the same time.

In addition, it is customary to wet the thread before winding with a preparation fluid. Such preparation devices are advantageously arranged between the clamping delivery unit and the take-up device. The devices shown in the exemplary embodiments in the aftertreatment zone are also exemplary. Thus, it would also be possible to swirl the thread in the aftertreatment zone only, so that only one swirling device would be arranged between the second delivery mechanism and the third delivery mechanism.

Essential for the false twist texturing machine according to the invention is the division of delivery plants in Umschlingungslieferwerken and Klemmlieferwerke, only the take-up directly upstream delivery plant is designed as Klemmlieferwerk and all other used for texturing and treatment of the thread delivery mechanisms are formed by the thread-gentle Umschlingungslieferwerke.

LIST OF REFERENCE NUMBERS

1

template site

2

supply bobbin

3

first delivery plant

4

heater

5

cooling device

6

creel frame

7

machine frame

7.1, 7.2, 7.3

Machine frame parts

8th

False twister

9

second delivery plant

10.1, 10.2, 10.

takeup

11

thread

12

Kitchen sink

13

Set heater

14

third delivery plant

15.1, 15.2, 15.3

Umschlingungslieferwerk

16.1, 16.2, 16.3

Galette

17.1, 17.2, 17.3

companion roll

19.1, 19.2, 19.3

godet

20

Terminal delivery works

21

drive shaft

22

pressure roller

23

clamping arm

24, 24.1, 24.2

electric motor

25

spool holder

26

drive roll

27

service aisle

28

auxiliary device

29

suction

30

Compressed air connection

31.1, 31.2

partial wave

32

fourth delivery plant

33

swirling

34.1, 34.2

depository

35

Compressed air line

36

suction tube

Claims (10)

1. False-twist texturing machine for the texturing of a plurality of multifilament threads, with a plurality of delivery units (3, 9, 14), a heating device (4), a cooling device (5), a false-twist device (8) and a winding device (10.1) having a driven drive roller for drawing off, drafting, texturing and winding at least one of the threads (11), a combined texturing/drafting zone being formed between a first delivery unit (3) and a second delivery unit (9), and a secondary treatment zone being formed between the second delivery unit (9) and a third delivery unit (14) preceding the winding device (10.1), characterized in that the first delivery unit (3) and the second delivery unit (9) are designed in each case as a looping delivery unit (15.1, 15.2), and in that the third delivery unit (14) is designed as a nipping delivery unit (20).
2. False-twist texturing machine according to Claim 1, characterized in that the first looping delivery unit (15.1), the second looping delivery unit (15.2) and the nipping delivery unit (20) can be driven by means of separate electric motors (19.1, 19.2, 24).
3. False-twist texturing machine according to Claim 2, characterized in that the nipping delivery unit (20) has a driveshaft (21) which extends over a plurality of processing stations and which is connected at one end to the electric motor (24).
4. False-twist texturing machine according to Claim 3, characterized in that the driveshaft (21) is divided within the machine into a plurality of part-shafts (31.1, 31.2), the part-shafts (31.1, 31.2) extending over a plurality of processing stations and being driveable independently of adjacent part-shafts (31.1, 31.2).
5. False-twist texturing machine according to Claim 3 or 4, characterized in that the nipping delivery unit (10) has, per processing station or per thread, a rotatable pressure roller (20) which bears against the circumference of the driveshaft (21) for nipping the thread (11).
6. False-twist texturing machine according to one of Claims 1 to 5, characterized in that the first looping delivery unit (15.1) and the second looping delivery unit (15.2) can, within a processing station, be driven individually and independently of adjacent looping delivery units of adjacent processing stations.
7. False-twist texturing machine according to Claim 6, characterized in that the looping delivery units (15.1, 15.2) are formed in each case by a driven godet (16.1, 16.2) and a rotatably mounted jockey roller (17.1, 17.2).
8. False-twist texturing machine according to one of Claims 1 to 7, characterized in that the looping delivery units (15.1, 15.2) are arranged on opposite machine-stand parts (7.1, 7.3) within the processing station, the said machine-stand parts (7.1, 7.3) forming an operating aisle (27) between them.
9. False-twist texturing machine according to Claim 8, characterized in that the second looping delivery unit (15.2) and the nipping delivery unit (20) are arranged one below the other on the machine-stand part (7.3), the nipping delivery unit (20) being arranged beneath the winding device (10.1) within the processing station.
10. False-twist texturing machine according to one of Claims 1 to 9, characterized in that a group of winding devices (10.1-10.3) of a plurality of processing stations is assigned an auxiliary device (28) for carrying out manual bobbin changes.

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