EP1687465A1

EP1687465A1 - Device for melt spinning a plurality of threads

Info

Publication number: EP1687465A1
Application number: EP04798013A
Authority: EP
Inventors: Jürgen RUST
Original assignee: Saurer GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2003-11-27
Filing date: 2004-11-19
Publication date: 2006-08-09
Also published as: CN100523317C; JP2007512443A; KR20060120169A; CN1882722A; TW200526825A; WO2005052225A1; DE10355293A1

Abstract

The invention relates to a device for melt spinning a plurality of threads with a plurality of spinning nozzles. Said spinning nozzles are arranged in two closely adjoining rows in a parallel manner. A cooling device is arranged below the row of nozzles, said cooling device being used to cool the threads extruded from the spinning nozzles. A winding machine which is used to wind the threads onto coils is also provided. The melt-spun threads of both nozzle threads are guided on a common collecting plane after extrusion. The aim of the invention is to enable the origin of each thread, inside a within the group of threads to be identified during monitoring of the thread path. According to the invention, the threads of one nozzle row and the threads of another nozzle row are maintained on a collecting plane in a predetermined row sequence by at least one guiding means.

Description

Device for melt spinning a variety of threads

The invention relates to a device for melt spinning a plurality of threads according to the preamble of claim 1.

A generic device is known from EP 0 285 736 AI. In the known device, a plurality of spinnerets are arranged in two parallel rows next to one another for melt spinning synthetic threads. The spinnerets are connected to a melt source so that a multifilament thread is extruded from each of the spinnerets. The spinnerets are arranged inside a heated spinning beam. A cooling device with a double cooling shaft is formed below the spinning beam, so that a separate cooling shaft is assigned to each of the rows of nozzles. After cooling, the threads of the two rows of nozzles are guided into a common collecting plane in order to pass through one or more treatment stages as a family of threads in a treatment facility. After the treatment, the threads are usually wound into bobbins in a winding device.

In order to obtain the highest possible productivity when spinning the threads, the thread runs in such devices are usually monitored for thread breakage, so that the shortest possible process interruptions can be realized. In addition to pure monitoring, analyzes are also required to find out possible causes of thread breaks. In the known device, however, the problem arises that the threads extruded from the spinnerets are all brought together together in a screen plane 2 ^" . The thread runs between the spinnerets and the winding device can therefore always be designed differently in the treatment device, so that the events recorded for the thread runs cannot be assigned for further analysis.

Accordingly, it is an object of the invention to provide a device for melt spinning a plurality of threads of the generic type, in which the threads extruded through the spinnerets of both rows of nozzles are always identifiable in their thread runs until they are wound up into bobbins.

This object is achieved according to the invention by a device with the features of the preamble of claim 1 in that the threads of one row of nozzles (A) and the threads of the other row of nozzles (B) are held in a predetermined order in the collecting plane by at least one guide means.

In order to be able to assign the events determined per thread run, such as thread breaks, to one of the spinneret rows or one of the spinneret of the spinneret rows when manufacturing the synthetic threads, the threads are held in the collecting plane by a guide means in a predetermined sequence. A specific position is thus assigned to each of the threads within the thread family. As long as the thread group is guided through the individual treatment stages of the treatment device, each thread can be assigned to the respective spinnerets at any time based on its position.

According to advantageous developments, sequences can be formed, for example, in which the family of threads of one of the rows of nozzles are guided alongside the family of threads of the neighboring row of nozzles in the collecting plane. In this case, the thread sections can be guided out of the collection level by one take-off godet or separately by two take-off godets. For this purpose, the guide means advantageously has two groups of thread guides, which are assigned to the partial thread groups. The thread guide could be in one common management level or in two adjacent management levels can be held by the management means.

However, it is also possible to alternately guide the threads of the two rows of nozzles next to one another in the collecting plane. In principle, different variants of sequences can be adhered to.

When producing multiple threads from two parallel rows of nozzles, special care must be taken to ensure that the thread guide and in particular the deflection of the threads are kept the same for all threads of the thread family, since otherwise differences in tension and thus differences in quality can have an effect. In a particularly advantageous development of the invention, the collecting plane is therefore formed in the middle of the parallel row of nozzles. The threads of both rows of nozzles are deflected immediately for guidance into the collecting plane.

Due to the large number of threads within a spinning station, the winding device per spinning station is preferably formed by a winding machine with two winding units or respectively winding machines with one winding unit each. This makes it possible to form compact winding units suitable for high winding speeds.

In order to wind the thread sheet of a row of nozzles at the same time as bobbins, it is further proposed that the thread sheet drawn off after the treatment is divided over the winding units in such a way that the threads of the one row of nozzles and the threads of the other row of nozzles are wound in a predetermined assignment to bobbins. Here, the assignment is preferably chosen such that the threads of one of the row of nozzles are all wound onto a winding spindle of one of the winding units.

In order to achieve the narrowest possible division of the rows of nozzles, the development of the invention in which the Küneineinrichtung has at least one double cooling shaft, which contains a separate cooling shaft and a central drain chamber between the cooling shafts per nozzle row. In this case, the middle drain chamber formed in the double cooling shaft for supplying the cooling shafts with blown air is supplied via an air duct arranged to the side of the machine longitudinal side. The air duct can be connected to the Drackkairimer of the double cooling shaft via cross connectors.

So that the thread coulters assigned to the rows of nozzles can safely run into the collecting level with a high level of thread running smoothness, both cooling shafts of the double cooling shaft open into a common chute.

In this case, a thread closure on the individual threads of the two thread groups is advantageously achieved by two separate preparation devices even before entering the collecting plane.

A further preferred development of the invention is characterized in particular by the fact that the spinnerets are divided into groups by forming a plurality of longitudinal modules, each group having the same arrangement of the spinnerets and temperature control of the spinnerets. The passage formed between the longitudinal modules means that each longitudinal module can be operated from both longitudinal sides of the machine. In this way, short piecing times in particular at the start of the process or after a process interruption can be achieved, since both an operator can supply the spinnerets of both rows of nozzles of a longitudinal module.

The spinnerets of the longitudinal modules are advantageously divided into several spinning stations, each of the spinning stations being assigned a double cooling shaft of the cooling device, which has a cooling shaft for each row of nozzles. This allows intensive cooling to be provided for the freshly extruded multifilament threads. A spinning station can have up to twelve or sixteen or have twenty spinnerets in two rows of nozzles, for example four spinning stations can form a longitudinal module.

The development of the invention, in which the longitudinal modules are each formed by a box-shaped nozzle carrier, which is heated by means of a heat transfer medium and is supplied with a heat transfer medium at the end facing the passage via an inlet and outlet, is particularly advantageous for uniform temperature control of the spinnerets within of the longitudinal module. In addition, a heat carrier circuit oriented in the longitudinal direction can be implemented in a simple manner in that the box-shaped nozzle carrier is provided with a slight inclination oriented in the longitudinal side of the machine. A further advantage is that the free spaces formed by the passages within the device can advantageously be used for supply lines and supply units.

The invention is described below with reference to an embodiment of an apparatus for melt spinning several threads with reference to the accompanying drawings.

They represent:

1 to 3 schematically several views of an embodiment of the device according to the invention with a plurality of spinning positions;

FIGS. 4 and 5 schematically illustrates a Ausfülrrungsbeispiel a Füh ^* τιngsmittels to the yarn division in the collection level;

6 schematically shows a further exemplary embodiment of a guide means for thread distribution in the collecting plane; Fig. 7 schematically shows an exemplary embodiment of the winding device of the device of Fig. 1 and

8 and 9 schematically show further exemplary embodiments for guiding and treating a family of threads.

1, 2 and 3 show an exemplary embodiment of the device according to the invention with a plurality of spinning positions for melt spinning a large number of threads in different views. 1 shows a view of a machine longitudinal side of the overall device, FIG. 2 shows a section of the overall device from FIG. 1 with two spinning positions, and FIG. 3 shows a view of a spinning position transverse to the machine longitudinal side. The following description applies to all figures, insofar as no express reference is made to one of the figures.

The device is held by a multi-day machine frame 1, which is indicated in FIGS. 1, 2 and 3 only as a lateral support. On an upper floor of the machine frame 1, several longitudinal modules 2.1, 2.2 and 2.3 are arranged alongside one another along the longitudinal side of the machine. The longitudinal modules 2.1, 2.2 and 2.3 each contain a multiplicity of spinnerets 4, which are arranged in two parallel nozzle rows A and B.

As shown in FIG. 1, the longitudinal modules 2.1, 2.2 and 2.3 arranged along the longitudinal side of the machine are each separated from one another by a passage D. The passage D between the longitudinal modules 2.1, 2.2 and 2.3 extends over all floors of the machine frame 1.

The longitudinal modules 2.1, 2.2 and 2.3 are each formed by a box-shaped nozzle carrier 8.1, 8.2 and 8.3. The spinnerets 4 assigned to the longitudinal module and the distributor pumps 5 connected to the spinnerets 4 as well as further melt distribution devices (not shown here) are arranged within the box-shaped nozzle carriers 8.1, 8.2 and 8.3. To heat the melt-carrying components, the nozzle carriers 8.1, 8.2 and 8.3 are each connected to a heat transfer circuit. For this purpose, an inlet 11 and an outlet 12 are arranged on the end faces 33 of the nozzle supports 8.1, 8.2 and 8.3. The drain 12 is formed in each case in the lower region of the nozzle carriers 8.1, 8.2 and 8.3, the nozzle carriers being held in a slightly inclined arrangement, so that the heat transfer medium obtained as condensate can be removed in a simple manner. The supply lines of the inlet 11 and the outlet 12 are advantageously formed in the area of the passages D. The devices for melt production or melt distribution arranged above the longitudinal modules 2.1, 2.2 and 2.3 are not shown. For example, the melt-carrying components of several longitudinal modules can be supplied by an extruder.

Each of the longitudinal modules 2.1, 2.2 and 2.3 is divided into several spinning stations. The structure and design of the spinning stations is explained in more detail below with reference to the longitudinal module 2.1 with reference to FIGS. 2 and 3.

Each of the spinning stations 3.1, 3.2, 3.3 and 3.4 detects a total of 12 spinnerets 4, which are evenly divided between the two rows of nozzles A and B. The spinnerets of the nozzle rows A and B are each connected to a distributor pump 5. Each of the distributor pumps 5 has a drive shaft 6, which is coupled to a drive, not shown here. A polymer melt is fed to the distributor pumps 5 via a melt connection 7 in each case.

In the embodiment shown in FIGS. 2 and 3, the spinnerets of a spinning station are fed by two separate distributor pumps. However, it is also possible that, for example, with a total number of six or eight spinnerets in two rows of nozzles, all spinnerets are supplied by a distributor pump. It is expressly pointed out that the number of spinnerets per spinning station is exemplary. A cooling device 13 is arranged below the nozzle supports 8.1, 8.2 and 8.3. The cooling device 13 has a double cooling shaft 14 for each spinning station. Thus, the double cooling shafts 14.1, 14.2, 14.3 and 14.4 are assigned to the spinning stations 3.1 to 3.4 of the first longitudinal module 2.1.

As can be seen in FIG. 3, each of the double cooling shafts 14.1 to 14.4 is formed by two separate cooling shafts 15.1 and 15.2, which are assigned to the spinnerets 4 of the nozzle rows A and the nozzle row B. Between the cooling shafts 15.1 and 15.2, the double cooling shafts 14.1 to 14.4 each have a drain chamber 16. The blowing walls 17.1 and 17.2 are formed between the cooling shafts 15.1 and 15.2 and the pressure chamber 16, so that a transversely directed cooling air flow is generated in the cooling shafts 15.1 and 15.2. The Drackka men 16 of the double cooling shafts 14.1 to 14.4 are connected in the lower region via an air connection 18 and a cross connector 19 to a central air duct 20. The air duct 20 extends laterally parallel to the longitudinal side of the machine and supplies all double cooling shafts of the cooling device 13. The cross connectors 19 connected to the air duct 20 are arranged in the lower region of the cooling device 13 between the spinning positions. The lower area of the cooling device 13 is formed in each case by a chute, which are identified for the first longitudinal module 2.1 by the reference numerals 34.1, 34.2, 34.3 and 34.4. The chutes 34.1 to 34.4 here have a shape that tapers downwards, so that the free spaces created between the spinning positions are used to accommodate the cross-pieces 19. The side supply of the blown air has the particular advantage that the spinneret rows A and B can be arranged with the closest possible division. An air supply arranged through the center plane extending between the nozzle rows A and B can thus be dispensed with.

As shown in FIG. 3, in the lower area of the double cooling shaft 14.1, each cooling shaft 15.1 and 15.2 has a preparation device 23.1 and

23.2 assigned. The preparation device 23.1 is the spinneret 4

Nozzle rows A assigned, so that the extruded multifilament threads 9 of Row of nozzles A are provided with a preparation job at the end of cooling by the preparation device 23.1. Correspondingly, the threads 10, which are extruded from the spinnerets of the nozzle row B, are prepared by the preparation device 23.2. After the preparation, the threads 9 and 10 are brought together in a common collecting plane 35 to form a thread family 22. For this purpose, a guide means 21 is arranged on the outlet side of the chute 34.1. The guide means 21 maintains a predetermined sequence of threads within the thread family 22. The distribution of the threads 9 and 10 in the thread sheet 22 is explained in more detail below.

As shown in FIGS. 2 and 3, a treatment device 24 is arranged below the cooling device 13. The treatment device 24 has a multiplicity of treatment modules 36, one of the treatment modules 36 being assigned to each spinning station. In the example of the first longitudinal module 2.1, the treatment modules 36.1 to 36.4 are assigned to the spinning stations 3.1 to 3.4. Depending on the thread type to be produced, the treatment modules are equipped with devices such as godets, godet units, swirling devices, thread chippers, heating devices, preparation devices, etc. In the illustrated embodiment, two godets 25.1 and 25.2 are shown by way of illustration.

Within the treatment device, the collecting plane 35, in which the thread sheet 22 is guided, is rotated through 90 ° in the transition from the guide means 21 to the run-on onto the first godet 25.1. The threads on the godet 25.1 are thus guided in a plane which is oriented essentially transversely to the longitudinal direction of the stitch.

The winding device 26, which consists of a plurality of winding units, is arranged below the treatment device 24. So are everyone

Spinning station each assigned two winding units 27.1 and 27.2. The

Winding units 27.1 and 27.2 can be in the form of a winding machine or be formed in the form of two winding machines placed side by side. In the illustrated embodiment, the winding units 27.1 and 27.2 are each formed on synchronously operated winding machines 37.1 and 37.2. The winding device 26 is thus formed from a plurality of winding machines 37. In each of the winding units 27.1 and 27.2, the threads of the thread family 22 are wound into a respective coil 32. For this purpose, the coils 32 are clamped on a winding spindle 29.1. The winding spindle 29.1 is held in each winding unit 27.1 and 27.2 by a winding turret 28. The bobbin turret 28 carries a second bobbin spindle 29.2 arranged offset by 180 °. By rotating the bobbin turret, the threads of the thread group 22 can thus be wound continuously into bobbins. A pressure roller 30 bears against the circumference of the coils 32. A traversing device arranged upstream of the pressure roller for guiding the threads back and forth to form cross-wound bobbins is not shown in any more detail here.

Before the thread sheet 22 enters the winding units 27.1 and 27.2, a double guide bar 31 is provided for each spinning station in order to divide the threads of the thread sheet 22. In this case, an assignment to the spinneret rows A and B or to the spinnerets of the nozzle rows A and B is maintained by the double guide bar 31. Further explanations are given below on the division of the thread group and on the selected assignment.

In the device shown in FIGS. 1, 2 and 3, the cooling device 13, the treatment device 24 and the winding device 26 are constructed identically for each of the longitudinal modules 2.1, 2.2 and 2.3. In operation, a polymer melt is generated by one or more melt sources, for example based on polyester. The polymer melt is fed to the distributor pumps 5 of the longitudinal modules 2.1, 2.2 and 2.3 via a distribution system which is not described in detail. By means of the distributor pumps, the polymer melt is conveyed to the assigned spinnerets 4 with overpressure. Each of the spinnerets 4 has a plurality of nozzle bores on its underside, through which a bundle of fine filaments per thread is extruded. This is how each of the spinnerets produces Device a multifilament thread. The threads spun within a spinning station per row of nozzles are then cooled in the double cooling shaft arranged per spinning station and, after cooling, brought together with the threads of the adjacent row of nozzles to form a common sheet 22. Before the assembly guide, the threads 9 of the nozzle row A and the threads 10 of the nozzle row B are wetted with a liquid by the associated preparation devices 23.1 and 23.2 and then brought together by the guide means 21 per spinning station to form the thread sheet 22 2αι. The threads of the thread sheet are passed parallel to each other through a treatment module 36 at a small distance from one another in order to be subsequently wound up into coils after treatment by two winding units.

In devices of this type, regular maintenance of the spinnerets and, on the other hand, the application of freshly spun threads after a process interruption or at the start of the process must be carried out by an operator. The arrangement of the spinnerets enables a quick change between the machine's long sides in a simple manner. As indicated in FIG. 3, an operator can quickly operate the longitudinal modules 2.1, 2.2 and 2.3 from both machine longitudinal sides from the middle level. For this purpose, it is possible to change the long side through the passage D between the long modules. Due to the short distance between the long sides, very short process interruptions are achieved even after thread breaks in one of the spinning stations.

Another advantage of the device is that supply lines and additional units, such as preparation conveyors, can advantageously be integrated in the passage D between adjacent longitudinal modules. This enables a very compact, space-saving device to be provided. For example, a second line of longitudinal modules could be arranged directly next to the device shown in FIG. 1. In this way, entire buildings can advantageously be arranged in rows Equip longitudinal modules that require 30 to 40% less space than conventional devices.

When monitoring such devices, each of the threads is usually monitored in its thread path. In the event that a thread break is detected, sensor means are provided which feed appropriate messages to a control device. Monitoring methods of this type are particularly important in order to be able to produce high-quality threads in the entire device. Such monitoring and analysis of the events occurring within a thread run, however, requires knowledge of the spinning position or spinning nozzle from which the thread was produced. In this respect, a predetermined sequence is to be observed when the threads are brought together from the two rows of nozzles, so that the entire thread path from the winding device to the spinneret can be traced.

4 and 5 schematically show an embodiment of a guide means for guiding the threads of both rows of nozzles within a spinning station, as would be used in the embodiment of the device according to the invention according to FIG. 1. The division and the spinning station could, for example, represent the spinning station identified in FIG. 2 with the reference number 3.1. FIG. 4 schematically shows a view of the spinning station until a thread group 22 is formed, and FIG. 5 schematically shows a cross-sectional view of the spinning station. Insofar as no express reference is made to one of the figures, the following description applies to both figures.

A total of 12 spinnerets are evenly divided between two rows of nozzles A and B on the nozzle carrier 8.1 shown. Accordingly, six threads are identified from the spinnerets 4 of the nozzle row A, which are identified by the reference number 9. The threads 10 of the nozzle row B are correspondingly extruded through the spinnerets of the nozzle row B. Within the cooling shafts (not shown here), the threads 9 and 10 are guided in parallel up to the preparation devices 23.1 and 23.2. Here are the Preparation devices 23.1 and 23.2 are shown as preparation rollers. However, the preparation devices can also be formed by individual preparation pins, each of which wets a thread. After the threads 9 and 10 have been wetted, they are guided into a common collecting plane 35. In the collecting plane 35, the threads 9 and 10 are arranged by the guide means 21 to form a thread sheet 22, in which the twelve threads arranged next to one another have a predetermined sequence. In the exemplary embodiment shown in FIG. 4, the threads 10 of the row of nozzles B and the threads 9 of the row of nozzles A are each guided side by side as a group of partial threads. The guide means 21, which is arranged below the false shaft, is formed by a thread guide bar with two groups of thread guides 38. The thread guides 38 of one of the groups are assigned to the threads 9 of the nozzle row A and the thread guides 38 of the other group are assigned to the threads 10 of the nozzle row B.

As shown in FIG. 5, the collecting plane 35 is arranged in the middle region between the spinnerets of the row of nozzles A and row of nozzles B. A uniform deflection of the threads of both rows of nozzles is thus achieved. Thus can advantageously also threads with the same physical properties can be produced ^1.

FIG. 5 shows a further exemplary embodiment of a guide means for dividing the threads in the thread family, as would be used in the exemplary embodiment of the device according to the invention according to FIG. 1. The embodiment according to FIG. 5 is identical to the embodiment according to FIG. 4, so that only the differences are explained at this point. When dividing the threads 9 of the row of nozzles A and the threads 10 of the row of nozzles B, the guide means 21 is used to determine a sequence within the thread family 22 by means of separate thread guides 38 which alternately guides a thread 9 of the nozzle row A and a thread 10 of the nozzle row B side by side , This results in an order according to the row of nozzles AB AB AB. The transition of the thread group 22 into the treatment device is thus defined in such a way that the origin of the threads is known at every place and time of the treatment. In the production of synthetic threads, the thread quality is very much determined by the respective winding process. In this respect, certain assignments between the spinnerets and the winding stations can be advantageous in order to produce uniform thread qualities. FIG. 6 shows, using an exemplary embodiment of a winding unit, such as could be used in the device shown in FIG. 1, for example, how the threads of the thread sheet are divided into the individual winding units after the treatment.

The winding units 27.1 and 27.2 are formed within a winding machine. The winding machine has two turrets 28.1 and 28.2. Each of the coil turrets carries two winding spindles 29.1 and 29.2. A pressure roller 30.1 and 30.2 is assigned to each of the winding turrets 28.1 and 28.2. A double guide bar 31 is provided above the pressure rollers 30.1 and 30.2 and has one thread guide per winding point on both longitudinal sides parallel to the winding spindles. Such double winders are known in principle, for example, in DE 100 45 473 AI. In this respect, reference is made to the cited publication for a further description of the winding machine.

The thread group 22 is divided after the treatment by the double guide bar 31 in accordance with a predetermined assignment to the individual winding units 27.1 and 27.2. The threads 9 of the row of nozzles A and the threads 10 of the row of nozzles 10 are separated from the sheet of yarn 22 and fed to the winding units 27.1 and 27.2. Thus, the threads 9 of the nozzle row A on the winding spindle 29.1 of the winding unit 27.1 and the threads 10 of the nozzle row B on the winding spindle 29.2 of the winding unit 27.2 are wound into bobbins. Thus, each of the threads within the thread family 22 is on everyone Identifiable between the spinnerets and the winding device. The device can thus be monitored and controlled using simple means. The device shown in FIG. 1 is exemplary in its design of the treatment device and the winding device. For example, all the threads of a spinning station could be taken up together by a winding machine with a single winding unit. The design of the treatment device essentially depends on whether pre-stretched threads (FDY), pre-oriented threads (POY), highly oriented threads (HOY) or crimped threads (BCF) are produced. In this respect, the treatment facility can optionally be equipped with units.

8 and 9 are further exemplary embodiments of treatment modules, as would be used, for example, in the spinning installation shown in FIG. 1.

In the embodiment shown in FIG. 8, the treatment module of a spinning station is formed by two godet units with a total of four godets. A first godet unit with the godets 25.1 and 25.2 is assigned to a family of partial threads with the threads 9 of the nozzle row A. The second godet unit with the godets arranged in mirror image of the first godet unit

25.3 and 25.4 the thread section with the threads 10 of the nozzle row B is assigned. The thread sections are guided by a double guide bar 31. However, the guidance could also take place directly by means of guidance in the collection level. For this purpose, two groups of thread guides could be held on both sides of a guide bar, so that a separation of the part thread sheets would be achieved at the same time as the spinning device ran out.

The godets 25.1 and 25.2 is a winding unit 27.1 and the godets 25.3 and

25.4 assigned a second winding unit 27.2. The winding units 27.1 and 27.2 can here as shown by a winding machine 37 or by two separate winding machines can be formed. In this exemplary embodiment, the winding machine 37 is essentially identical to the previous exemplary embodiment according to FIG. 7. In contrast to the Off ^* nιhrungsbeispiel of FIG. 7, the two winding units here are 27.1 and 27.2 arranged symmetrically side by side, so that the revolver 28.1 and 28.2 with the same rotational sense for winding the coils 32 can be driven.

The exemplary embodiment shown in FIG. 8 shows an arrangement of the treatment device in which the threads can be knocked with the smallest possible deflection angles when they are drawn off from the spinning device. The godet units and the winding units are preferably operated synchronously. Double units can also advantageously be used here.

In the exemplary embodiment shown in FIG. 9, the treatment module is formed by two godet units arranged symmetrically next to one another. The first godet unit with the godets 25.1 and 25.2 is assigned to the thread section with the threads 9 of the nozzle row A and the second godet unit with the godets 25.3 and 25.4 of the thread section with the threads 10 of the nozzle row B. Here, the godet units are directly upstream of the guide means 21, which is formed by a guide bar with two groups of thread guides 38. The groups of thread guides 38 are arranged in the collecting plane in such a way that the thread sections are separated at the same time.

For winding bobbins, the threads 9 and 10 could be picked up by a winding machine in accordance with the exemplary embodiment according to FIG. 7 or according to the exemplary embodiment according to FIG. 8.

In order to achieve the lowest possible thread deflections, there is the possibility that the godet unit with godets 25.1 and 25.2 and the godet unit with godets 25.3 and 25.4 are arranged in offset planes to one another.

Here, the size of the offset between the godet units can be such be chosen so that the threads can be guided to the downstream godets 25.1 and 25.3 after the separation of the thread sets without spatial deflection.

The treatment devices shown in the aforementioned exemplary embodiments are exemplary in the construction and design of the individual units. Basically, a pair of godets can also be used to guide the threads with multiple wrapping and swirling devices in front of, between or behind the godets. In addition, the treatment facilities can advantageously be combined with aids such as thread chippers, thread suction and monitoring sensors.

List of reference symbols

1 machine frame 2.1, 2.2, 2.3 longitudinal module 3.1, 3.2, 3.3, 3.4 spinning station

4 spinneret 5 distributor pump

6 drive shaft

7 melt connection

8.1, 8.2, 8.3 nozzle holder

9 threads of the nozzle row A 10 threads of the nozzle row B 11 inlet 12 outlet 13 cooling device

14.1, 14.2, 14.3, 14.4 double cooling shaft

15.1, 15.2 cooling shaft

16 pressure chamber

17.1, 17.2 blowing wall

18 air connection

19 cross connectors

20 air duct

21 guide means

22 cords

23.1, 23.2 preparation device

24 treatment facility

25.1, 25.2, 25.3, 25.4 galette

26 take-up device

27.1, 27.2 winding unit

28 winding turret

29.1, 29.2 winding spindle 30 pressure roller

31 double guide rail

32 spool

33 Front side 34.1, 34.2, 34.3, 34.4 chute

35 collection level

36.1, 36.2, 36.3, 36.4 treatment modules

37.1, 37.2 winding machine

38 thread guide

A row of nozzles

B row of nozzles

D passage

Claims

Patent claims

1. Device for melt spinning a plurality of threads from a plurality of spinnerets (4), which are arranged in two closely adjacent rows of nozzles (A, B), with a cooling device (13) arranged below the two rows of nozzles (A, B) for cooling the the spinning nozzles (4) extruded threads, with a treatment device (24) for treating the threads and a winding device (26) for winding the threads, the melt-spun threads of the two nozzle rows (A, B) after extrusion into a common collecting plane (35 ), characterized in that the threads (9) of one of the rows of nozzles (A) and the threads (10) of the other row of nozzles (B) are guided by at least one guide means (21) to a group of threads (22) in the collecting plane (35) be held in a predetermined order.

2. Device according to claim 1, characterized in that the guide means (21) is formed in the collecting plane (35) with two groups of thread guides (38) in such a way that the threads (9) of the one row of nozzles (A) are a thread section and the Threads (10) of the other row of nozzles (B) forms a second thread section.

3. Device according to claim 2, characterized in that the two groups of thread guides (38) are assigned a godet (25.1), through which the two partial thread sets are guided next to one another as a thread set (22).

4. The device according to claim 2, characterized in that each group of thread guides (38) are each assigned one of two godets (25.1, 25.3), through which the two partial thread sets are guided separately.

5. The device according to claim 1, characterized in that the guide means (21) in the collecting plane (35) with separate thread guides (38) is formed such that the threads (9, 10) of the two rows of nozzles (A, B) alternately parallel are guided side by side in the thread sheet (22).

6. Device according to one of claims 1 to 5, characterized in that the collecting plane (35) is formed parallel between the two rows of nozzles (A, B).

7. Device according to one of claims 1 to 6, characterized in that the winding device (26) is formed by a winding machine (37) with two winding units (27.1, 27.2) or two winding machines (37.1, 37.2) each with a winding unit.

8. The device according to claim 7, characterized in that the thread sheet (22) drawn off after the treatment is divided into the winding units (27.1, 27.2) in such a way that the threads (9) of the row of nozzles (A) and the threads (10) of the Nozzle row (B) are wound in a predetermined assignment to coils.

9. The device according to claim 8, characterized in that the assignment is selected such that the threads (9) of one of the nozzle rows (A, B) are all wound on a winding spindle (29.1) of one of the winding units (27.1).

10. Device according to one of claims 1 to 9, characterized in that the KüWeinrichtung (13) has at least one double cooling shaft (14.1), which contains a separate cooling shaft (15.1, 15.2) per row of nozzles (A, B).

11. The device according to claim 10, characterized in that a medium pressure chamber (16) between the two cooling shafts (15.1, 15.2) and that the middle pressure chamber (16) of the double cooling shaft (14.1) is connected to an air duct (20) arranged on the side next to a machine longitudinal side.

12. The device according to one of claims 10 or 11, characterized in that the two cooling shafts (15.1, 15.2) of the double cooling shaft (14.1) open into a chute (34.1), the threads (9, 10) of the two rows of nozzles (A, B) below the chute (34.1) in the common collecting level (35).

13. The apparatus according to claim 12, characterized in that the two cooling shafts (15.1, 15.2) of the double cooling shaft (14.1) are assigned two separate preparation devices (23.1, 23.2), each of the threads (9, 10) of the nozzle rows (A, B ) separately with a preparation order.

14. The device according to one of claims 1 to 13, characterized in that the plurality of spinning nozzles (4) of the two rows of nozzles (A, B) is divided into a plurality of longitudinal modules (2.1, 2.2) along a machine longitudinal side, each longitudinal module (2.1, 2.2) has a plurality of spinning stations (3.1, 3.2), each with several spinnerets (4) assigned to one of several double cooling shafts (14.1, 14.2), and that the longitudinal modules (2.1, 2.2) are separated from one another by a passage (D).

15. The apparatus according to claim 14, characterized in that the longitudinal modules (2.1, 2.2) are each formed by a box-shaped nozzle holder (8.1, 8.2), that the nozzle holder (8.1, 8.2) can be heated by means of a heat transfer medium and that the nozzle holder (8.1 , 8.2) have an inlet (11) and / or outlet (12) for the heat transfer medium at at least one end facing the passage (D).