EP1761663B1 - Melt spinning device and method for spreading a plurality of multifilament yarns in a melt spinning device - Google Patents

Abstract

A melt spinning device used for producing a plurality of multifilament yarns and which comprises a plurality of spinning nozzles for extruding a plurality of filament bundles, a preparation device for separately combining the filament bundles to individual yarns and a plurality of treatment devices. The filament bundles, when being extruded, are separated by a center distance (M) and the yarns in the treatment device are guided in a substantially smaller treatment spacing (B). This provides an especially compact melt spinning device and allows a rapid and uncomplicated threading of the filament bundles. For this purpose, a plurality of separating yarn guides are mounted downstream of the preparation device in the thread path. The separating yarn guides are arranged at a yarn spacing (S) to each other which is substantially smaller than the center distance (M). The filament bundles can thus be immediately separated by the movement of a manually guided suction device which withdraws the filament bundles directly from the spinning nozzles during thread-up.

Description

The invention relates to a melt spinning device for a plurality of multifilament yarns according to the preamble of claim 1 and to a process for applying a plurality of multifilament yarns in a melt spinning device according to the preamble of claim 15.

In the production of melt-spun multifilament continuous filaments, a plurality of strand-like filaments are first extruded from a plurality of spinnerets. For this purpose, each of the spinnerets has a plurality of nozzle bores, so that the filament strands extruded from a spinneret form a filament bundle. After cooling the filament strands, each of the filament bundles is brought together separately to form a thread, so that a so-called first convergence point is formed in the spinning line. This convergence point, which defines the merger of the individual filament strands, is assigned to the spinnerets, so that a thread pitch is established which is substantially equal to a center distance of two adjacent spinnerets. Such a spinning device is for example from the DE 199 29 817 A1 known.

In the known spinning device, the filament bundles are brought together in the convergence point by a preparation device into individual threads. Subsequently, the threads are guided with small thread spacing side by side in the downstream treatment device and treated.

For the first application of the threads, it is customary that after piecing the filament bundles through the spinning device, the individual filament bundles are picked up by a manually guided suction device, preferably a suction gun, and withdrawn continuously from the spinnerets. Subsequently, the separation of the held together in a suction filament bundle to the threads in the convergence point and a merging of the threads to a treatment distance. In particular, the separation is a time-consuming manual work, while much waste is produced. A quick application of the threads is therefore desirable to avoid larger amounts of waste.

In order to obtain the same physical properties as possible on each of the threads, it is also known in the known spinning devices not to exceed certain deflection angles for bringing the threads into the treatment distance. Thus, in a plurality of parallel-spun threads larger heights of the melt spinning device are inevitable, which in turn complicates the application procedure of the threads for separating and merging.

From the JP-A-2002317326 there is known a spin spinning apparatus having a spinning shaft in which a suction nozzle is arranged, which catches threads spun by the melt spinning device at a yarn break and discharges them to a yarn waste container. When a thread breakage, the threads are taken over by means of a hand suction from the suction nozzle and manually fed to subsequent treatment facilities.

Another melt spinning device is also from the JP-A-6335817 in which a treatment device with a cylinder can be moved from an operating position into a maintenance position. In this maintenance position, a machine operator with the help of a hand suction can take threads from a suction device and manually feed a treatment device.

In addition, the reveals EP-A1-1300496 a spin-stretch texturing machine with a suction for threads and Praperationseinrichtungen, wherein the Preperationseinrichtungen several thread guides are assigned.

It is an object of the invention to provide a melt spinning device of the generic type with a thread guide, which allows a low overall height of the melt spinning device and a fast Erstanlegen the threads.

A further object of the invention is to provide a method for applying the multifilament threads, in which a high degree of automation can be achieved.

This object is achieved by a melt spinning apparatus for a plurality of multifilament yarns with the features of claim 1 and by a method for applying multifilament yarns in a melt spinning apparatus having the features of claim 15.

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

The invention is based on the finding that the filament bundles are extruded from individual spinnerets which are at a distance from each other. When piecing and applying the filament bundles they are shared by a Suction taken so that all filament strands of the filament bundles are brought together in a suction opening of the suction device. Each filament bundle forms a straight line between the suction opening and the respective associated spinneret. Due to the center distance between the spinnerets, which is also referred to in the art as a nozzle division, these straight lines run at an angle to each other on the opening of the suction device. Thus, the convergence points of the filament bundles can be defined independently of the center distance of the spinnerets. The melt-spinning device according to the invention has a landing aid with several Separierfadenführern in the yarn path behind the preparation device. The Separierfadenführer have a thread pitch, which thread spacing is substantially smaller than the center distance between the spinnerets, wherein the Separierfadenführern a guide plate is assigned, which has a guide slot for each Separierfadenführer. Thus, the particular outer filament bundles are guided in the melt spinning device with a deflection such that the distance between the filament bundles is constantly reduced until separation. The thread spacing when separating the filament bundles is chosen such that on the one hand no mutual influence of the filament bundles occurs and on the other hand, a permissible maximum deflection of the filament strands is not exceeded.

Due to the reduced thread spacing when separating the filament bundles, the filament bundles can advantageously be guided directly through the suction device during application. In a manually guided suction device in the form of a suction gun, the separation process can be carried out by simple handling by an operator. An additional manual operation by separating the filament bundles due to excessive thread distances can be omitted.

In order to enable the filament bundles to be created in the upstream preparation device even before separation, the development of the invention according to claim 2 is particularly advantageous. Here, the preparation device is associated with an auxiliary guide means, which auxiliary guide means for insertion the threads in the preparation device from a deflection position in an operating position is movable.

Particularly advantageous here is the formation of the auxiliary guide means with a sliding edge on which the filament bundles are guided. Thus, regardless of the distance of the suction device to the Hilfsfübrungsmittel each adjusting thread spacing can be realized.

In order to obtain a threading of the filament bundles in the preparation device by adjusting the auxiliary guide means, the preparation device is advantageously upstream of the Separierfadenführern in the threadline that the filament bundles without substantial deflection between the spinneret and one of the preparation device downstream thread guide are feasible. The filament bundles can thus be advantageously introduced from their natural run out into the preparation device.

In the event that the preparation device has a plurality of thread oiling means associated with the threads, the auxiliary guiding means is preferably formed by a deflecting rod with sliding edge extending parallel to the thread lubrication means and held on a pivoting arm. Thus, the filament bundles can be applied in a simple manner before separating on the sliding edge of the deflection bar. Even with a larger distance between the preparation device and the application aid, the thread spacings which increase during the guidance of the suction device can occur without hindrance on the deflection bar of the auxiliary guidance means. By pivoting the deflecting rod from the deflection position to the operating position, the filament bundles are automatically run into the thread oiling agent after separation.

In order to obtain an intensive wetting of the filament bundle with a larger number of filaments, a plurality of thread oiling means are associated with a thread, wherein the yarn oiling means associated with a thread adjoin with their thread guiding surfaces face. In this case, advantageously, the auxiliary guide means can be supplemented by a second deflecting bar, which is assigned to the downstream thread guiding means.

In a particularly advantageous embodiment of the invention, the auxiliary guide means in addition to the deflection bar on a distance parallel to the deflection bar extending Auslenkstange, which is pivotable together with the deflection bar between a deflection position and an operating position. In the operating position, the threads are held by the Auslenkstange to the Fadenölungsmittel.

In order to carry out the separation of the individual filament bundles with the smallest possible thread spacing and thus in a position relatively close to a divergence point of the suction gun, the development of the invention is particularly advantageous, in which the Separierfadenführer are formed on a guide plate. Here, each of the Separierfadenführer is associated with a guide slot in the guide plate, which open into a contact edge of the guide plate. The distance between the guide slot at the contact edge is preferably smaller than the thread spacing between the Separierfadenführem. To thread the filament bundles into the guide slot, the suction device can be guided with the suction opening at a relatively small distance from the contact edge.

The application of the threads in the subsequent treatment device is particularly advantageous for the case in which the Separierfadenführern immediately downstream of a Tangelvorrichtung. In this case, threading into the tying device can be done by means of the separating thread guides.

It is particularly advantageous if the Tangelvorrichtung upstream of a first guide plate with the Separierfadenführern and a second guide plate is arranged downstream with a plurality of outlet yarn guides. The guide plates preferably have guide slots for insertion of the threads, which thus allow a secure threading in the Tangelvorrichtung.

In many cases, the treatment devices are arranged rotated by 90 ° to the spinneret rows. In these cases, it is thus necessary that the threads must be transferred from a spinning plane to a treatment level. The development of the invention according to claim 11 is particularly advantageous for this purpose. The Tangelvorrichtung is disposed in the transition between the spinning plane and the treatment level, wherein the individual thread channels of the Tangelvorrichtung offset from each other. Thus, the threads can be introduced in a simple manner after threading in the Tangelvorrichtung in a subsequent treatment device such as a drafting system.

In the case of a large number of parallel-spun threads, the application of the threads can be further improved by arranging an auxiliary separating device in the thread run between the spinneret and the placement aid, by means of which the predispensing of the filament bundles takes place during application.

The Hilfssepariereinrichtung can be formed by separating plates in a chute or preferably by a shaped sheet with multiple cuts, which is pivotally movable between the cooling shaft and a chute in the yarn path.

The inventive method for applying a plurality of multifilament yarns in a melt spinning device is characterized by a simple and quick handling by an operator. After the filament bundles have been spun and taken up by the suction opening of a suction device, preferably a suction gun, the filament bundles can be separated and guided by guiding the suction gun in a simple manner with the help of the positioning aid.

Here, the filament bundles are preferably applied before separation for introduction into the preparation device to an auxiliary guide means, through which the filament bundles are guided until separation in a deflection position. To introduce the filament bundles into the preparation device, the auxiliary guide means is pivoted from the deflection position into an operating position. The filaments are automatically introduced into the preparation device.

Hereinafter, the melt spinning apparatus of the present invention and the method for applying the multifilament yarns in the melt spinning apparatus will be explained in more detail with reference to some embodiments with reference to the accompanying drawings.

Fig. 1 bis Fig. 3

schematisch ein erstes Ausführungsbeispiel der erfindungsgemäßen Schmelzspinnvorrichtung in mehreren Ansichten

Fig. 4 bis Fig. 7

schematisch ein weiteres Ausführungsbeispiel der erfindungsgemäßen Schmelzspinnvorrichtung in mehreren Ansichten

Fig. 8 und Fig. 9

schematisch ein weiteres Ausführungsbeispiel der erfindungsgemäßen Schmelzspinrivorrichtung in mehreren Ansichten

Fig.10

schematisch ein Ausführungsbeispiel einer Präparationseinrichtung mit Hilfsführungsmittel zum Anlegen der Fäden

They show:

Fig. 1 to Fig. 3

schematically a first embodiment of the melt spinning device according to the invention in several views

Fig. 4 to Fig. 7

schematically another embodiment of the inventive melt spinning device in several views

FIGS. 8 and 9

schematically another embodiment of the invention Schmelzspinrivorrichtung in several views

Figure 10

schematically an embodiment of a preparation device with auxiliary guide means for applying the threads

In the Fig. 1 to 3 a first embodiment of a melt spinning device according to the invention is shown schematically in several views. Fig. 1 shows schematically a complete view of the melt spinning device in operation, Fig. 2 a partial view of the melt spinning apparatus when Erstanlegen the threads and Fig. 3 schematically a plan view of the landing help Fig. 1 and 2 ,

Unless expressly made to any of the figures, the following description applies to all figures.

The melt spinning device has a plurality of spinnerets 2.1, 2.2 and 2.3, which are arranged on an underside of a heated spinneret 1. The spinnerets 2.1 and 2.2 and 2.3 is associated with a melt distribution 3, which is connected to a melt generator (not shown here). Below the spinnerets 2.1, 2.2 and 2.3, a cooling shaft 5 and a subsequent directly to the cooling shaft 5 chute 6 is arranged. The cooling shaft 5 is connected to a cooling flow generator 41, through which a cooling air flow flowing transversely to the cooling shaft 5 can be generated.

Below the chute 6, a preparation device 7 and a plurality of treatment devices 15.1 and 15.2 is arranged. The design of the treatment devices 15.1 and 15.2 is dependent on the type of thread to be produced in each case by the melt spinning process. Thus, for example, for the production of fully drawn threads (FDY), the second treatment device 15.2 is formed by a drafting arrangement with a plurality of godet units (indicated by dashed lines) in order to stretch the threads. The first treatment device 15.1 could be designed as a Tangeleinrichtung to obtain an improved thread closure by turbulence of the filament strands.

At the end, the melt spinning device has a take-up device 16, through which coils 17 are wound on a winding spindle 18.

In operation, a plurality of filament bundles 4.1, 4.2 and 4.3 are extruded parallel side by side with the melt spinning device. For this purpose, a plastic melt is fed under pressure to the spinnerets 2.1, 2.2 and 2.3. The spinnerets 2.1, 2.2 and 2.3 have on their underside a nozzle plate in which a plurality of nozzle bores are included. Through each of the nozzle bores a filament strand is extruded. The number of filament strands per spinneret 2.1, 2.2 and 2.3 each form a filament bundle. Thus, the filament bundle 4.1 is formed by the extruded filament strands of the spinneret 2.1. The filament strands of the filament bundles 4.1, 4.2 and 4.3 are withdrawn via extraction elements in the treatment devices 15.1 or 15.2 of the spinnerets 2.1, 2.2 and 2.3. The filament strands of the filament bundles 4.1, 4.2 and 4.3 pass through the cooling shaft 5 and the chute 6, wherein a cooling medium acts on the filament strands in the cooling shaft 5. At the end of the chute 6, the filament bundles 4.1, 4.2 and 4.3 are passed through a preparation device 7 in order to wet the individual filament strands of the filament bundles 4.1, 4.2 and 4.3. This results in a merger of the filament strands of the filament bundles 4.1, 4.2 and 4.3, so that in each case a multifilament thread 8.1, 8.2 and 8.3 is formed. Each of the filament bundles 4.1, 4.2 and 4.3 is thus supplied after the preparation device 7 as thread 8.1, 8.2 and 8.3 the subsequent treatment facilities 15.1 and 15.2. At the end of the treatment, the threads 8.1, 8.2 and 8.3 are wound into a respective coil 17 in the winding device 16. For this purpose, the take-up device 16 has a traversing device (not shown in more detail) as well as a pressure roller 19 resting against the circumference of the spools 17 in order to place the threads 8.1, 8.2 and 8.3 on the spools 17.

Before the spinning process of the type described above can be carried out, the threads must be inserted in the devices of the melt spinning device. In order to be able to carry out the initial application of the threads as quickly and easily as possible by an operator, the melt spinning device has aids which are described in more detail below. In the yarn path of the preparation device 7 is associated with an auxiliary guide means 9. The auxiliary guide means 9 is formed in this embodiment by a guide rod 10 which extends parallel to a thread running plane in which the filament bundles 4.1, 4.2 and 4.3 are guided. On the guide rod 10, an actuator 11 engages, by which the guide rod 10 between a deflection position and an operating position is adjustable back and forth.

In the yarn path of the preparation device 7 a landing aid 12 is arranged downstream. The landing aid 12 has a plurality of separating yarn guides 13.1, 13.2 and 13.3. The Separierfadenführer 13.1, 13.2 and 13.3 are arranged side by side in the thread running plane with distance. The thread spacing between the Separierfadenführern 13.1, 13.2 and 13.3 is in this case substantially smaller than the distance of the filament bundles 4.1, 4.2 and 4.3 during extrusion through the spinnerets 2.1, 2.2 and 2.3. The distance of the filament bundles 4.1, 4.2 and 4.3 during the extrusion is equal to a center distance M between the spinnerets 2.1, 2.2 and 2.3. The center distance M denotes the distance between the center axes of the spinnerets. The center distance M is also referred to as nozzle pitch. The center distance of the filament bundles 4.1, 4.2 and 4.3 is significantly greater than the distance between the filaments during the treatment. The distance between the threads 8.1, 8.2 and 8.3 during the treatment is referred to herein as the treatment distance B. The treatment distance B is preferably in a range of 8 mm to 30 mm.

At the in Fig. 1 illustrated embodiment, the thread spacing between the Separierfadenführern, which is here marked with the letter S, formed substantially equal to the Beahandlungsabstand B. In principle, however, this could also be made slightly larger or smaller than the treatment distance.

The Separierfadenführern 13.1, 13.2 and 13.3 is assigned a guide plate 14. The interaction of the Separierfadenführer 13.1, 13.2 and 13.3 with the guide plate 14 will be explained below with reference to FIG. 1.3.

The guide plate 14 assigned to the separating thread guides 13.1, 13.2 and 13.3 has in each case one guide slot 21.1, 21.2 and 21.3 for each of the separating thread guides 13.1, 13.2 and 13.3. One end of the guide slots 21.1, 21.2 and 21.3 opens directly at the level immediately before the Separierfadenführern 13.1, 13.2 and 13.3. An opposite end of the guide slots 21.1, 21.2 and 21.3 opens at a contact edge 20, which is arranged at a distance from the Separierfadenführern 13.1, 13.2 and 13.3. The mouth ends of the guide slots 21.1, 21.2 and 21.3 at the contact edge 20 in this case have a thread pitch, which is preferably smaller than the thread spacing of the Separierfadenführer 13.1, 13.2 and 13.3.

For the first application of the filament bundles 4.1, 4.2 and 4.3, these are first taken together by a suction device 23 after piecing through the spinnerets 2.1, 2.2 and 2.3. The suction device 23, which is preferably formed by a manually guided suction gun, has a suction opening 22, as in the FIGS. 2 and 3 is shown. The filament bundles 4.1, 4.2 and 4.3 are removed together in the suction opening 22 and continuously withdrawn from the spinnerets 2.1, 2.2 and 2.3. To apply the filament bundles 4.1, 4.2 and 4.3, the suction device 23 is initially guided around the guide rod 10 of the auxiliary guide means 9. The guide rod 10 of the auxiliary guide means is in this case in the deflection position. This situation is shown in dashed lines in FIG. 1.2. The filament bundles 4.1, 4.2 and 4.3 are guided at a sliding edge of the guide rod 10 at a distance from the preparation device 7.

In order to separate the filament bundles 4.1, 4.2 and 4.3 from each other, the suction device 23 is now guided just below the guide plate 14 in the direction of the feed edge 20. Since the filament bundles 4.1, 4.2 and 4.3 are still deducted directly by the suction device 23 from the spinnerets 2.1, 2.2 and 2.3, the distance between the filament bundles increases With increasing distance to the suction opening 22. By moving the suction device 23 against the feed edge 20 can be a division of the filament bundles 4.1, 4.2 and 4.3 make such that each of the filament bundles 4.1, 4.2 and 4.3 in one of the guide slots 21.1, 21.2 and 21.3 is incident and are automatically threaded in further movement of the suction device 23 in the Separierfadenführer 13.1, 13.2 and 13.3. Now, the filament bundles 4.1, 4.2 and 4.3 are separated from each other, so that the threads 8.1, 8.2 and 8.3 can be manually inserted by the suction device 23 in a simple manner in the subsequent facilities. The Separierfadenführer 13.1, 13.2 and 13.3 thus represent a convergence point, in which the filament strands of each of the filament bundles 4.1, 4.2 and 4.3 are brought together to form a thread. Immediately after the separation of the filament bundles 4.1, 4.2 and 4.3, the auxiliary guide means 9 is pivoted into an operating position, so that the filament bundles 4.1, 4.2 and 4.3 are automatically introduced into the preparation device 7. For this purpose, the actuator 11 is activated, so that the guide rod 10 is guided from the deflection position to the operating position. This situation is in Fig. 2 shown. The preparation device 7 is shown in this embodiment as a roll preparation, in which the filament bundles 4.1, 4.2 and 4.3 are guided on a wetted roll surface. The distance between the filament bundles 4.1, 4.2 and 4.3 in the preparation device is dependent on the center distance M of the filament bundles 4.1, 4.2 and 4.3 during the extrusion and the thread spacing S of Separierfadenführer 13.1 and 13.2 and 13.3. The preparation device 7 is located in the zone of the spreading of the filament bundles 4.1, 4.2 and 4.3, so that the means for preparing the filament bundles 4.1, 4.2 and 4.3 are such that each of the filament bundles 4.1, 4.2 and 4.3 are prepared in its natural yarn path can.

At the in Fig. 1 illustrated embodiment of the melt spinning device according to the invention can be the Separierfadenführer 13.1, 13.2 and 13.3 at the same time use as a group thread guide, which allows directly the leadership of the threads in the subsequent treatment device 15.1. This is the thread spacing S of the Separierfadenführer 13.1, 13.2 and 13.3 equal to the treatment distance B formed.

In Fig. 4 to 7 another embodiment of a melt spinning device according to the invention is shown in several views and situations. Fig. 4 shows a view of the embodiment during operation. Fig. 5 and 6 show several views of the embodiment during the application process at the beginning of the process and Fig. 7 shows a plan view of the landing aid in the melt spinning device Fig. 4 , Unless expressly made to any of the figures, the following description applies to all figures.

This in Fig. 4 illustrated embodiment is essentially with the embodiment according to Fig. 1 identical. In that regard, only the differences are explained below.

The embodiment according to Fig. 4 illustrates a melt spinning device through which a multicolor thread is made. For this purpose, each of the spinnerets 2.1, 2.2 and 2.3 is connected via separate melt distributors 3.1, 3.2 and 3.3 with one of several melt sources, so that in each of the spinnerets 2.1, 2.2 and 2.3 differently colored filament bundles 4.1 to 4.3 are extruded. After cooling and preparation, the filament bundles 4.1, 4.2 and 4.3 are brought together separately from the threads 8.1, 8.2 and 8.3 and fed into a treatment device 15. In the treatment device 15, the threads 8.1, 8.2 and 8.3 are textured and brought together to form a composite thread 42 and led to a winding 16. In that regard, this embodiment differs essentially in that in the treatment device formed from the filament bundles 4.1, 4.2 and 4.3 threads 8.1, 8.2 and 8.3 in the treatment device 15 are combined to form a composite thread 42 and wound into a coil. As treatment facilities For example, a drafting system, a crimping device, a cooling device and a take-off unit could be provided, as in FIG Fig. 4 indicated by dashed lines.

As a further difference, the filament bundles 4.1, 4.2 and 4.3 are guided in a spinning plane to the threads 8.1, 8.2 and 8.3. The treatment of the threads 8.1, 8.2 and 8.3, however, takes place at a 90 ° offset treatment level, so that between the treatment device 15 and the preparation device 7, a rotation of the yarn sheet from a spinning plane takes place in a treatment level. For this purpose, a Tangelvorrichtung 35 and a pen thread guide 30 is disposed between the preparation device 7 and the treatment device 15. The tangel device 35 has a treatment channel 34 per thread ( Fig. 6 ) in which a swirling of the thread takes place. In this case, the treatment channels are arranged offset relative to one another relative to the spinning plane, so that the threads 8.1 to 8.3 are guided out of the spinning plane during the transition from the preparation device 7 into the tangling device 35. At the end of the pen thread guide 30, the threads 8.1, 8.2 and 8.3 are further rotated in the direction of the treatment level, so that the threads in the treatment device 15 in the Treatment level are feasible.

For preparing the filament bundles 4.1, 4.2 and 4.3 withdrawn in the spinnerets 2.1 to 2.3, the preparation device 7 has a plurality of filament bundling means 24.1, 24.2 and 24.3 associated with the filament bundles 4.1, 4.2 and 4.3. The thread oiling means 24.1 to 24.3 are each a Gegenfadenölungsmittel 31.1 to 31.3 downstream in the yarn path, so that the thread oiling means 24.1 to 24.3 and the Gegenfadenölungsmittel 31.1 to 31.3 face with their thread contact surfaces. Thus, the filament bundles 4.1 to 4.3 are prepared from two sides.

For first application of the filament bundles 4.1 to 4.3, the preparation device 7 is assigned an auxiliary guide means 9. The auxiliary guide means 9 is formed by a first deflecting bar 25.1 and a second deflecting bar 25.2. The first deflection bar 25.1 is assigned to the thread oiling means 24.1 to 24.3, wherein the deflection bar 25.1 extends parallel to the thread oiling means 24.1 to 24.3 arranged in a plane. The second deflection bar 25.2 is assigned to the counter-thread oiling means 31.1 to 31.3. The deflection rods 25.1 and 25.2 are projectingly held on a pivoting arm 26. The pivot arm 26 is rotatably mounted about a pivot axis 27. The rotational movement of the pivoting arm 26 can be carried out by a rotary actuator 28. By the movement of the pivot arm 26, the deflection rods 25.1 and 25.2 can be adjusted back and forth between a deflection position and an operating position.

In Fig. 4 the situation is shown in which the deflection rods 25.1 and 5.2 are held in an operating position. In this case, the deflection rods 25.1 and 25.2 are pivoted out of the yarn path, so that the filament bundles 4.1 to 4.3 are guided in the thread oiling means 24.1 to 24.3 and the counter-thread oiling means 31.1 and 31.3.

In Fig. 5 the deflection rods 25.1 and 25.2 are shown in the deflection position, in which the filament bundles 4.1 to 4.3 are guided with contact on the deflection rods 25.1 and 25.2. This situation represents the application process of the filament bundles 4.1 to 4.3 of the melt spinning device. The filament bundles 4.1 to 4.3 are taken up by the suction device 23 and continuously withdrawn from the spinnerets 2.1 to 2.3. Like from the Fig. 5 and 6 As can be seen, the preparation device 7 is arranged downstream of a placement aid 12 in the threadline. The landing aid 12 is formed in this embodiment by a guide plate 14.

The guide plate 14 is in Fig. 7 shown in a plan view. In the guide plate 14 three Separierfadenführer 13.1, 13.2 and 13.3 are introduced. Of the Thread spacing S between the Separierfädenführern 13.1, 13.2 and 13.2 and 13.3 is designed substantially smaller than the center distance M between the spinnerets 2.1, 2.2 and 2.2 and 2.3. The Separierfadenführern 13.1 to 13.3 are each assigned a guide slot 21.1 to 21.3 in the guide plate 14, which open at an Anlegkante 20. The mouth of the guide slots 21.1 to 21.3 on the contact edge 20 each have a thread pitch A, which is smaller than the thread pitch S of Separierfadenführer. Thus, the manually guided in the suction device 23 filament bundles 4.1 to 4.3 can be separated and threaded with a small distance of the suction opening 22 to the guide plate 14. In Fig. 5 the situation is shown immediately before the separation. In this case, the filament bundles 4.1 to 4.3 are guided through the suction device 23 and withdrawn from the spinnerets 2.1 to 2.3. In this case, before the separation, the filament bundles 4.1 to 4.3 are applied to the auxiliary guide means 9, by means of which a later automatic introduction of the filament bundles into the preparation device 7 is possible. The auxiliary guide means 9 guides the filament bundles 4.1 to 4.3 on the deflection rods 25.1 and 25.2 in each case in a deflection position. The deflection rods 25.1 to 25.2 each have a sliding edge, so that with further guidance of the suction device 23, the thread spacings between the filament bundles 4.1 to 4.3 can adapt to the natural yarn path automatically. To separate the filament bundles 4.1 to 4.3, the suction device 23 is guided directly below the guide plate 14 with the filament bundles 4.1 to 4.3 to the contact edge 20. The filament bundles 4.1 to 4.3 spread out from the suction opening 22 to the spinnerets 2.1 and 2.3 are then threaded into the guide slots 21.1 to 21.3 and automatically guided into the separating thread guides 13.1 to 13.3 on further guidance of the suction device 23.

For further explanation of the application process is on the Fig. 6 Referenced. The Anlegehilfsmittel 12 is immediately downstream of the tangle device 35 in the yarn path. The tying device 35 has an inlet yarn guide 32, a treatment channel 34 and a discharge yarn guide 33 for each yarn on. In order to thread the filament bundles 4.1 to 4.3 in the Tangelvorrichtung 35, a guide plate 29 is downstream in the yarn path of the tying device 35. The guide plate 29 is formed substantially identical to the guide plate 14. Here, the introduced in the guide plates 14 and 29 guide slots are designed such that they span with the Einlauffadenführem 32, the treatment channels 34 and the outlet yarn guides 33 each have a threading plane. Thus, by threading the filament bundles 4.1 to 4.3 to the lower guide plate 29 in addition to the separation at the same time achieve an automatic threading of the filament bundles 4.1 to 4.3 in the Tangelvorrichtung 35. In Fig. 6 the situation is shown after the threading. The filament bundles are still drawn off by the suction device 23 from the spinnerets 2.1 to 2.3. Here, the filament bundles 4.1 to 4.3 are guided on the deflection rods 25.1 and 25.2 and the guide plates 14 and 29. By activating the rotary actuator 28, the deflection rods 25.1 and 25.2 are each pivoted out of their deflection positions in their operating positions, so that the filament bundles 4.1 to 4.3 automatically fall into the associated thread oiling means 24.1 to 24.3 and counter-threading oil means 31.1 to 31.3. By guiding the filament bundles 4.1 to 4.3 on the deflection rods 25.1 and 25.2, the yarn spacing between the filament bundles which is obtained by the natural yarn path is maintained so that reliable threading into the preparation device 7 is possible by pivoting the deflection rod 25.1 and 25.2.

At the in Fig. 4 illustrated embodiment, the Separierfadenführer in the landing aid 12 are formed such that a thread guide takes place only for the purpose of applying and separating. During operation, the threads 8.1, 8.2 and 8.3 are guided by the inlet thread guides 32 of the tying device 25.

The embodiments according to Fig. 1 and 2 are particularly characterized by the fact that the separation of the filament bundles in the yarn path behind the preparation device takes place. In that regard, the point of convergence of the filament bundles can be in the vicinity of the thread treatment distance and thus in the vicinity of the treatment device. This very low heights can be realized in the melt spinning device. The deflection for bridging the center distance in the spinning device up to the treatment distance in the treatment device can be achieved essentially solely by deflection of the filament bundles. Here, the length of the chute and the cooling shaft can be used to maintain a minimum length and the resulting maximum allowable deflection.

In the Fig. 8 and 9 another embodiment of a melt spinning device according to the invention is shown in two views, which is preferably used in the cases in which a plurality of filament bundles are spun parallel side by side. The embodiment is in Fig. 8 in a side view and in Fig. 9 shown in a front view. The structure of the embodiment is identical to the embodiment according to Fig. 4 so that only the differences are explained below.

At the in Fig. 8 and 9 illustrated embodiment of the melt spinning device according to the invention, an auxiliary separator 37 is disposed between the cooling shaft 5 and the chute 6. The auxiliary separator 37 is formed by a shaped sheet 38 having a plurality of cuts 39.1, 39.2 and 39.3. The molded sheet 38 is pivotable by a pivot actuator 40 from a rest position to an operating position. In Fig. 8 and 9 the rest position is shown in dashed lines. In the operating position, the shaped sheet 38 protrudes into the yarn path in the filament bundle 4.1 to 4.3. Here, by the cuts 39.1, 39.2 and 39.3 in each case a pre-separation of the filament bundles 4.1 to 4.3. The merging of the filament strands of the filament bundles 4.1 to 4.3 can be defined here via the shape of the incisions. The subsequent application process after pre-separation is carried out as previously in the embodiment to Fig. 4 described. In that regard, reference is made to the preceding description.

To be at the in Fig. 4 and 8th shown threading the filament bundles to obtain an improved application of the filament bundles in the preparation device, is in Fig. 10 a further embodiment for forming an auxiliary guide means, as shown for example in the spinning device according to Fig. 4 or Fig. 8 could be used. Here, the first deflection bar 25.1 is assigned a deflection bar 36 at a distance. The Auslenkstange 36 extends parallel with distance to the deflection bar 25.1. The deflection bar 25. 1 and the deflection bar 36 are both fastened to the pivot arm 26. The pivot arm 26, which carries the second deflection bar 25.2 at an opposite end, is pivotable via a central pivot axis 27. Here, the deflection bar 25.1 and the Auslenkstange 36 is assigned to the upper thread oiling means 24.1 and the lower deflection bar 25.2 the lower Gegenfadenölungsmittel 31.1. By the pivot arm 26 can be the pivot rods 25.1 and 25.2 and the Auslenkstange 36 pivot in a deflection position and in an operating position. In Fig. 10 the deflection position is shown. The operating position, however, is shown in dashed lines. In the deflection position, the filament bundle 4.1 is guided by the deflection rods 25.1 and 25.2 without contacting the thread oiling means 24.1 and counter-threading oil means 31.1. In the operating position, the filament bundle is deflected by the deflection rod 36 in the direction of the thread oiling means 24.1, so that the filament bundle is held on the thread oiling means 24.1 with secure contact. The deflection rods 25.1 and 25.2 are arranged in the operating positions at a distance from the yarn path, so that the filament bundle 4.1 is guided on the lower Gegenfadenölungsmittel 31.1. This design of the auxiliary guide means is thus particularly suitable for obtaining a positive guidance of the filament bundles in the preparation device.

The spinning device according to the invention and the inventive method for applying multifilament threads has been explained with reference to some embodiments. In this case, the device parts which are essential for the method can be used in any melt spinning device suitable for the production of multifilament threads. Thus, the melt spinning device according to the invention is suitable for producing textile, technical or crimped multifilament yarns. As thread type FDY, POY, HOY or BCF Monocolor / Multicolor can be produced. By separating the preparation device downstream, the operation for applying the filament bundles from one plane can be carried out by an operator. By shifting the point of convergence of the filament bundles towards the treatment device, a very small overall height and compact design of the inventive melt spinning device are possible. The design of the auxiliary guide means and the landing aids is also exemplary here. In principle, any thread-guiding elements which make it possible to deflect and thread the filament bundles in a preparation device can be used as auxiliary guiding means. Likewise, the number of threads in the illustrated embodiments is exemplary and not limited to the melt spinning device according to the invention.

LIST OF REFERENCE NUMBERS

1

spinning beam

2.1, 2.2, 2.3

spinnerets

3, 3.1, 3.2, 3.3

Melt distributor

4.1, 4.2, 4.3

filament bundles

5

cooling shaft

6

chute

7

preparation device

8.1, 8.2, 8.3

thread

9

Auxiliary guide means

10

guide rod

11

actuator

12

auxiliary spreading

13.1, 13.2, 13.3

separating yarn

14

guide plate

15

treatment facility

16

takeup

17

Kitchen sink

18

winding spindle

19

pressure roller

20

contact edge

21.1., 21.2., 21.3

guide slot

22

suction opening

23

suction

24.1, 24.2, 24.3

Yarn-oiling

25.1,25.2

deflecting

26

swivel arm

27

swivel axis

28

rotary actuator

29

guide plate

30

Pin thread guide

31.1, 31.2, 31.3

Counter yarn-oiling

32

Inlet yarn guide

33

Outlet yarn guide

34

treatment channel

35

entanglement

36

traversing rod

37

Hilfssepariereinrichtung

38

Formblech

39.1, 39.2, 39.3

cuts

40

swivel actuator

41

Cooling power generator

42

composite thread

Claims (19)

1. Melt-spinning device for multiple multifilament yarns (8.1, 8.2, 8.3) with several spinnerets (2.1, 2.2, 2.3) disposed next to one another for extruding several filament bundles (4.1, 4.2, 4.3), with a preparation device (7) for the separate combining of the filament bundles (4.1, 4.2, 4.3) to form individual yarns (8.1, 8.2, 8.3), and with several treatment devices (15.1, 15.2), where the yarns (8.1, 8.2, 8.3) are guided into the treatment devices (15.1, 15.2) with a treatment spacing (B) and where the treatment spacing (B) is significantly less than a center spacing (M) between neighboring spinnerets (2.1, 2.2, 2.3) , characterized by the fact that an auxiliary spreading means (12) with several separating yarn guides (13.1, 13.2, 13.3) is disposed in the yarn path downstream from the preparation device (7) and that the separating yarn guides (13.1, 13.2, 13.3) are disposed relative to one another with a yarn spacing (S) which significantly less than a center spacing (M) between neighboring spinnerets, characterized in that a guide plate (14, 29) is assigned to the separating yarn guides (13.1, 13.2, and 13.3), which comprises one guide port (21.1, 21.2, 21.3) for each of the separating yarn guides (13.1, 13.2, 13.3).
2. Melt-spinning device according to claim 1, characterized by the fact that the auxiliary guide means (9) is assigned to the preparation device (7), where the auxiliary guide means (9) can be moved from a traversing position into an operating position to guide the yarns into the preparation device (7).
3. Melt-spinning device according to claim 2, characterized by the fact that the auxiliary guide means (9) comprises a guide rod (10) on which the filament bundles are guided so as to be parallel and next to one another during the spreading.
4. Melt-spinning device according to claim 2 or 3, characterized by the fact that the preparation device (7) is disposed in the yarn path upstream from the separating yarn guides (13.1, 13.2, 13.3) in such a manner that the filament bundles (4.1, 4.2, 4.3) can be guided in a straight path between the spinnerets and the separating yarn guides and can be threaded into the preparation device (7).
5. Melt-spinning device according to one of claims 2 to 4, characterized by the fact that the preparation device (7) comprises several yarn-oiling means (24.1, 24.2, 24.3) assigned to the yarns and that the auxiliary guide means (9) is formed by a diverting rod (25.1) which comprises a sliding edge, extends parallel to the yarn-oiling means (24.1, 24.2, 24.3), and is held on a pivot arm (26).
6. Melt-spinning device according to claim 5, characterized by the fact that counter yarn-oiling means (31.1, 31.2, 31.3) are disposed in the yarn path downstream from each of the yarn-oiling means (24.1, 24.2, 24.3), where the yarn-oiling means (24.1, 31.2) assigned to a yarn are positioned with their yarn contact faces opposite one another and that a second diverting rod (25.2) of the auxiliary guide means (9) is assigned to the counter yarn-oiling means (31.1, 31.2, 31.3).
7. Melt-spinning device according to claim 5 or 6, characterized by the fact that the auxiliary guide means comprises, extending parallel to the diverting rod (25.1), a traversing rod (36) through which the yarns are held in the operating position at the yarn-oiling means (24.1, 24.2, 24.3).
8. Melt-spinning device according to one of claims 1 to 7, characterized by the fact that the separating yarn guides (13.1, 13.2, 13.3) are formed on a guide plate (14), where a guide port (21.1, 21.2, 21.3) is assigned to each of the separating yarn guides (13.1, 13.2, 13.3) and where the guide ports (21.1, 21.2, 21.3) empty at a spreading edge (20) of the guide plate (14).
9. Melt-spinning device according to claim 8, characterized by the fact that the spacing (A) between the guide ports (21.1, 21.2) on the spreading edge (29) is less than the yarn spacing (S) between the separating yarn guides (13.1, 13.2).
10. Melt-spinning device according to one of the foregoing claims, characterized by the fact that one of the treatment devices (15.1, 15.2) is formed by a Tangel device (35), where the yarns are guided for threading into the Tangel device (35) by the separating yarn guides (13.1, 13.2, 13.3).
11. Melt-spinning device according to claim 10, characterized by the fact that a first guide plate (14) with the separating yarn guides (13.1, 13.2, 13.3) is disposed upstream from the Tangel device (35) and a second guide plate (29) with several outlet yarn guides is disposed downstream, where each of the guide plates comprises several guide ports (21.1., 21.2, 21.3) for guiding in the yarns.
12. Melt-spinning device according to claim 10, characterized by the fact that the Tangel device (35) comprises a treatment channel (34) for each yarn and that the yarn channels (24) in the Tangel device (35) are disposed so as to be offset relative to the spinning plane of the yarns in such a manner that the yarns are guided in a treatment device (15) disposed downstream in a treatment plane extending at 90° relative to the inlet plane.
13. Melt-spinning device according to one of claims 1 to 12, characterized by the fact that in the yarn path between the spinnerets (2.1, 2.2, 2.3) and the auxiliary spreading means (12) an auxiliary separating means (37) is disposed due to which there is a pre-distribution of the filament bundles (4.1, 4.2, 4.3) during the spreading.
14. Melt-spinning device according to claim 13, characterized by the fact that the auxiliary separating means (37) is formed by a profiled plate (38) with several notches (39.1, 39.2, 39.3) which is disposed in such a manner that it can be moved between a cooling shaft (5) and a drop shaft (6).
15. Process for spreading multifilament yarns in a melt-spinning device according to one of claims 1 to 14, in which several filament bundles, after spinning from several spinnerets disposed so that each has a center spacing relative to another, are guided together by a moveable suction device and are drawn off from the spinnerets, in which the filament bundles are separated at a position downstream from the spinnerets to form yarns and in which the yarns are guided into a preparation device and several treatment devices disposed sequentially in the yarn path, where the yarns in the treatment devices have, in comparison to the center spacing, a significantly smaller treatment spacing, characterized by the fact that the filament bundles on separation to form yarns are caused by a spreading means to have a yarn spacing which is significantly less than the center spacing.
16. Process according to claim 15, characterized by the fact that the filament bundles are spread for guiding into the preparation device before the separation at the auxiliary guide means through which the filament bundles are guided in a traversing position.
17. Process according to claim 16, characterized by the fact that the filament bundles are guided into the preparation device by moving the auxiliary guide means from the traversing position into an operating position.
18. Process according to one of claims 15 to 17, characterized by the fact that, for separating the filament bundles by guiding the suction device, the filament bundles are automatically laid into several separating yarn guides.
19. Process according to claim 18, characterized by the fact that the filament bundles are guided together on a spreading edge of the guide plate, at which spreading edge several guide ports assigned to the separating yarn guides are formed for separation.

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