DE10145312A1 - Melt spinning and winding assembly, has a feed unit in the filament path to the winder, with a powered roller in a truncated cone shape and with filament guide sections, to take the filament according to its tension for correction - Google Patents

Abstract

Melt spinning and winding assembly, has a feed unit in the filament path to the winder, with a powered roller in a truncated cone shape and with filament guide sections, to take the filament according to its tension for correction. The assembly for melt spinning and winding polymer filaments has a deflection roller in the filament path, at the feed to the winder, with a truncated cone guide section. The laying point for the filament at the roller guide section, as its start, is determined by the filament guide according to the actual filament tension. On a difference between the actual filament tension and a nominal value, the filament start position at the roller guide section is moved towards the smaller or larger diameter of the roller as appropriate. The filament guide unit has a reciprocating guide moving across the filament path, with a spring (19) so that the filament tension bears against the spring with a variable force to give it the required setting at the roller guide section appropriate to the tension level. The spring force gives a balanced setting between its action and the filament tension. The filament guide is a rod, to lead the filament at its free end, with a spring at the rod holder. The filament guide rod can pivot on a common swing axis and lead the filaments at both free ends. One end of the rod guides the filament at the start of the roller guide section, and the other end of the rod is for the filament at the end of the roller guide. It works with a static filament guide to give a variable filament loop around the roller guide through the swing movement of the guide rod. A monitor has a sensor to register the position of the filament guide. The spring force can be applied by an actuator linked to a control, which gives the setting according to signals from a filament tension sensor. The filament tension sensor is before or after the deflection roller in the filament path. The control is linked to the roller drive. The filament feed unit has a second powered roller (12), with a filament guide section. Both rollers at the feed have a common drive. The guide is at a moving carrier (30), which is moved between a rest position outside the filament path and an operating position in the path of the filament. To handle a number of parallel filaments (9.1-9.4), the roller guide has a number of guide sections (17.1-17.4) and filament guides (18.1-18.4) in a row. An Independent claim is included for a technique to alter the filament tension, where the filaments are fed at a given speed to a feed unit with at least one powered roller, to pass partially around it. The surface speed of the deflection roller is controlled according to the filament tension, to give a set relationship between the filament and roller speeds. The roller surface speeds are varied by a conical structure with guide sections at intervals along its axial line. The filament start position at the deflection roller is set by a filament guide, according to the monitored filament tension level.

Description

The invention relates to a device for melt spinning and winding at least one multifilament thread according to the preamble of claim 1.

Such a device is known from EP 0 845 550 A1.

When melt spinning and winding a multifilament thread, it is known that the thread receives different tension states. So basically two a thread tension that occurs when the thread is pulled out of the spinning zone is pending, and at least one further thread tension, which is used to wind up the Thread is differentiated. Furthermore, it is common to do more at the same time Spin out the other threads in parallel and side by side to wrap, one or more between spinning and winding Treatment stages. There are differences in thread tension often inevitable between the neighboring threads. To the thread tension Changing the running thread becomes a delivery plant according to EP 0 845 550 arranged between the spinning device and the winding device. The The delivery plant consists of two rotatably mounted rollers, one of which is at least least is driven. The rollers are made S-shaped or Z-shaped by the thread entwined. The drive speed is used to influence the thread tension changed the roller so that the peripheral speed acting on the thread in relation to the thread running speed to a thread tension reduction or leads to an increase in thread tension. In the known device a driven delivery mechanism is assigned to each thread.  

From WO 96/09425 a device is known in which the rollers of the Delivering plant on the circumference a thread sheet of several parallel threads lead the same time. However, this known solution has the disadvantage that the change in drive speed due to the inertia of the long rollers only is delayed and on the other hand no individual thread treatment is possible.

It is an object of the invention to provide a device for melt spinning and To wind up to create at least one multifilament thread with which a change The thread tension of the running thread is changed by the supplier without changes drive speed is possible.

This object is achieved in that the roller Füh tion section with a slope in the axial direction, the thread on the circumference of the guide section is feasible, and that a guide means in Thread run of the roller is assigned, through which a start position of the company dens is changeable in the axial direction on the circumference of the guide section.

The slope of the roller in the area of the thread guide changes the Outside diameter of the relevant guide section in the axial direction. so with are areas with relatively small outside diameters and areas with relative large outer diameters formed on the guide section. At a predetermined drive speed of the roller depending on the depending because of the outer diameter of the guide section of various circumferential dizziness take effect. For this, the starting position of the thread on Scope of the guide section by the guide means according to the ge desired thread tension treatment changed. Both Be drive states are set, in which the peripheral speed of the Roller is greater than the thread speed, or such operating be set at which the peripheral speed is less than the thread speed.  

The invention is not limited to the device according to the invention but also includes the method according to the invention according to claim 17. Das The method is basically from the document EP 0 845 550 A1 cited at the beginning or also known from EP 0 539 866 B1. In the known procedure ren is used to change a thread tension of a running thread of the thread with a predetermined thread running speed on the circumference of a drive led roller. In doing so, the relationship between that on the thread we kenden peripheral speed of the roller by changing the drive speed of the roller controlled. In the method according to the invention, dage the ratio between the circumferential speed acting on the thread speed of the roller and the thread speed of the thread solely by changing Change the starting position of the thread controlled on the circumference of the roller. For this is the thread on the circumference of a guide formed with a slope cut the roller.

The particular advantage of the invention is that a precise adjustment of the Thread tension as well as a sensitive change of thread tension possible is. It is particularly advantageous here if the guide section is frustoconical is shaped.

The particularly advantageous development of the invention according to claim 3 or according to claim 18 enables compliance with a predetermined thread tension on the running thread during the process. This is the start position of the thread on the circumference of the guide section depending on a target value of the thread tension of the thread controlled by the guide means or regulated that in the event of a deviation from the nominal value of the thread tension Start position ver to a smaller diameter of the guide section is changed or towards a larger diameter of the guide section is changed. This allows the thread tension in particular to be immediately the take-up device to a constant setpoint, independently  of the thread tensions acting in front of the thread. In the event of a shortfall the nominal value of the thread tension, for example in the thread run behind the lie ferwerk causes the change in the start position that the thread that is in the substantially constant thread speed of the roller is fed, due to the smaller diameter of the guide section a smaller one Peripheral speed is exposed. This results in the company braking dens, so that there is a higher thread tension in the thread path behind the roller provides. If the nominal value of the thread tension is exceeded, it is demented speaking by changing the starting position of the thread, the circumferential Speed increases so that slippage at a constant yarn speed arises between the roller and the thread. This will decrease thread tension construction causes so that the thread tension acting in the thread run behind the roller diminishes.

To change the starting position of the thread, the guide means is in accordance with an advantageous development of the invention by a transverse to the thread path reciprocable thread guide and one together with the thread guide acting force transmitter formed. The encoder controls the position of the company depending on the thread tension. Can as thread guide here pins, eyelets, rollers or slotted thread guides are used.

Depending on the design of the force transducers, mechanically automatic guidance can be carried out means according to the advantageous development according to claim 5 or elek trically controlled or regulated guide means according to the advantageous further training according to claim 9.

According to the development of the device according to the invention according to claim 5 the force transmitter is designed as a preloaded spring. Here, the Spring a deflection force that acts on the thread guide across the thread path. The The position of the thread guide is thus determined on the one hand by the deflection force generated and on the other hand be by a force resulting from the thread tension  true, which also acts on the thread guide. The position of the thread guide is therefore be by the balance of the forces acting on the thread guide Right. In this development of the device according to the invention takes over the thread guide has the two functions of guiding the thread and the thread chip sensation. This training is therefore particularly suitable to the To equalize the thread tension of the thread in the thread run in front of the roller.

Due to the pre-tensioned spring, the setpoint of the thread becomes the spring force voltage affected. To change the nominal value of the thread tension proposed according to an advantageous development, the spring between a clamp swiveling guide rod and a holder. Here it works free end of the guide rod as thread guide. The holder is in its position changeable relative to the pivot axis of the guide rod, so that difference thread tension setpoint ranges can be set.

In a particularly preferred development of the device according to the invention tion according to claim 7, both leading ends of a guide rod for Thread guide used. Here, one of the leaders leads the thread in the company the run in front of the guide section of the roller and the opposite guide end of the thread in the thread path behind the guide section of the roller. The The guide rod is pivotally mounted about a pivot axis. Between the in Thread run behind the roller leading end and the guide section a stationary thread guide is arranged so that when the guide is deflected rod on the one hand the starting position of the thread on the guide section and on the other hand, the thread wrapping of the thread on that of the roller neten thread guide is changed. With this training a door can be opened the functions of "thread guiding" and "sensing thread tension" make that essentially the thread tension in the thread path behind the Roller is sensed. This is an advantageous influence on the thread tension possible in the thread run behind the roller.  

When using an automatic mechanical guide means, as suggested in claim 8, simply by adding a Monitoring device and a position sensor the position of the thread guide capture electronically. This is a thread break monitoring and / or Thread tension measurement possible to control the device and / or can be used for quality assurance.

When a thread is melt spun, devices often become chip used for quality assurance. With such devices can the guide means in a simple manner according to the advantageous further perform formation of the device according to the invention according to claim 9. For this a controllable actuator is used as the force transmitter. The actuator is with one Controller connected to which a tension sensor for detecting the thread tension of the running thread is assigned. This takes place within the controller Actual / target comparison in order to obtain a corresponding tax if a difference is found generate signal and give it to the actuator. According to the control signal the actuator will change the start position of the thread guide.

Depending on whether the thread tension in the thread path behind the roller and thus un indirectly before the winding device or before the roller to the spinning device should be changed, the tension sensor in the thread run in front of the Place the roller or in the thread path behind the roller.

In a particularly advantageous development of the invention, the controller also connected to the roller drive of the roller. So is a sheet tion to change the peripheral speeds on the roller immediately by changing the starting position of the thread and by changing the Drive speed of the roller possible.

The Füh can be used to change the peripheral speed on the roller training section with a substantially constant slope. In the  Cases where larger thread tension ranges have to be bridged however, it is also possible to use the guide section of the roller in steps to train changing incline. It is also possible to curve the slope to execute or the curve sections with different curvatures train, the transitions z. B. run tangentially.

In order to achieve a thread running speed that is as uniform as possible proposed according to an advantageous development according to claim 13, the Form delivery unit from two driven rollers. Both rolls advantageously driven by a common drive.

Since melt spinning usually involves several threads side by side which is spun and wound up is the preferred training of Invention according to claim 15 particularly advantageous. There are several guides tion sections formed on the roller. Each thread is a guide section on the roller and a guide cooperating with the guide section assigned to funds.

In the case of a roller with several guide sections, the guide means are provided preferably arranged in a row next to each other. There is a possibility here speed that the thread guide of the guide means each by a force generator or can be controlled collectively by a common force generator.

Further advantageous developments of the invention are in the subclaims Are defined.

Some exemplary embodiments are described below with reference to the beige added drawings described in more detail.  

They represent:

Fig. 1 shows schematically a first embodiment of the device according to the invention;

Fig. 2 schematically shows a side view of a delivery mechanism of the first embodiment example of the device according to the invention from Fig. 1;

Figure 3 shows schematically a view of a roll with a guide portion and a guiding means.

Fig. 4 shows schematically an embodiment of a guide means;

Fig. 5 shows schematically a further embodiment of a guide means;

Fig. 6 schematically shows a further embodiment of the device according to the invention;

Fig. 7 schematically shows a view of a further embodiment of a supply plant;

Fig. 8 schematically shows a view of a further embodiment of a supply plant;

Fig. 9 schematically shows a view of the guide means according to the embodiment example of FIG. 8.

In Fig. 1, a first embodiment of the device according to the invention is shown schematically. The apparatus comprises a spinning device 1, a un terhalb the spinning device 1 arranged delivery mechanism 2 and one below of the delivery mechanism 2 arranged winding means. 3 A spinning beam 4 is shown by the spinning device 1 and a plurality of spinnerets 5 arranged next to one another are shown on the underside of the spinning beam. Below the spinning beam 4 , a cooling shaft 7 is provided to cool a filament bundle 6 extruded through the spinneret 5 . At the outlet of the cooling shaft 7 , several Sam thread guides 8 are arranged to each form a Fa 9 from a bundle of filaments 6 . In this exemplary embodiment, the spinning device 1 is suitable for simultaneously spinning a total of four threads 9.1 , 9.2 , 9.3 and 9.4 .

The downstream of the spinning device 1 arranged feed system 2 is composed of the rollers 12 and 13. FIG. The roller 12 is arranged upstream of the roller 13 in the thread path. For this purpose, the roller 12 is rotatably mounted on a roller carrier 14 . The roller carrier 14 is attached to the machine frame 16 . In this embodiment, the roller carrier 14 is designed such that the roller 12 is supported at its ends. The roller 12 is connected at the end facing the machine frame 16 to a drive, not shown here. On the machine frame 16 , a second roller carrier 15 is arranged at a distance from the roller carrier 14 . The roller carrier 15 serves to receive the roller 13 . The roller 13 is also connected to its end facing the machine frame 16 with egg nem drive, not shown here. The roller 12 and the roller 13 are preferably driven together by a drive. The roller 16 each has a guide section 17 in the region of the thread guide. A total of four guide sections 17.1 , 17.2 , 17.3 and 17.4 are formed. The guide sections 17 are explained in more detail in the following description.

The roller 13 are several Vorgeord net guide means 18.1 to 18.4 . Here, the guide means 18.1 is assigned to the guide section 17.1 on the roller 13 , the guide means 18.2 to the guide section 17.2 , etc. The structure and function of the guide means is also explained in more detail in the description below. The guide means 18 are attached to a carrier 30 , which is also firmly connected to the machine frame 16 . The roller 12 and roller 13 are each partially wrapped by the threads.

Below the delivery unit 2 , the winding device 3 is provided in order to wind the threads 9.1 to 9.4 in each case into bobbins 26.1 to 26.4 . The coils 26 are formed on a winding spindle 24 which is driven via a spindle drive 25 . In this case, the threads are each fed to the bobbins 26 via a head thread guide 21 , a traversing mechanism 22 and a pressure roller 23 resting on the circumference of the bobbin.

In the device shown in FIG. 1, a polymer melt is fed, for example, through an extruder to the spinning device 1 . Within the spinning beam, the polymer melt is fed to the spinning nozzles 5 in each case via spinning pumps in such a way that the spinning nozzles provided with a plurality of nozzle bores each extrude a filament bundle 6 . Each of the Filamentbün del 6 is combined into a thread and drawn off via the supply mechanism 2 from the spinning device. 1 Within the delivery unit 2 , a thread tension treatment is carried out on the threads 9 in such a way that the threads drawn off from the winding device 3 have an essentially equal thread tension. The function for thread tension treatment within the delivery plant 2 is described in more detail below.

For the purpose of thread tension treatment, the threads 9 run parallel to one another in the feed mechanism 2 . As shown in Fig. 2, the rollers 12 and 13 are arranged relative to one another in such a way that the threads 9 loop around the delivery mechanism 2 in a Z-shape. The rollers 12 and 13 are each driven at a constant speed, so that the threads 9 each have a substantially constant thread running speed. For thread guidance, the roller 13 has a guide portion 17 on the circumference. The guide section 17 is frustoconical with a slope in the axial direction of the roller 13 . The guide section 17 thus has a larger and smaller who in the axial direction of the roller 13 outer diameter for guiding the thread. A guide means 18 is arranged upstream of the guide section 17 of the roller 13 . The guide means 18 consists of a movable thread guide 20 and a force transducer 19 in order to influence the starting position of the thread 9 on the guide section 17 as a function of a thread tension. To prevent that, with adjustment of the Fa denlauf by the guide means 18 of the yarn 9 moves axially on the roller 12, a yarn guide 11.1 is provided in the inlet of the delivery mechanism. 2

In the winding device 3 , the threads are then wound up to the bobbins 26 .

In Fig. 3 an embodiment of a mechanically automatically acting Füh is shown approximately. The thread guide 20 is formed by a guide rod 29 . The guide rod 29 is rotatably supported at one end on a pivot axis 27 . The pivot axis 27 is fixed on a carrier 30 . The force transmitter 19 is formed by a tension spring 28 . For this purpose, the tension spring is tensioned between a holder 31 , which is fastened to the holder 30 at a distance from the pivot axis 27 , and the guide rod 29 .

The illustrations in FIGS. 3.1, 3.2 and 3.3 illustrate the interaction between the guide means 18 and the guide section 17 on the roller 13 . The view runs in the direction of the thread 9 , which is transported obliquely from the roller 12 he most to the second roller 13 . The first roller 12 is not shown. The thread 9 is lightly touched by the spring-loaded guide rod 29 . At a first thread tension, the guide rod 29 is in a position perpendicular to the carrier 30 ( FIG. 3.1). In the further course of the thread, the thread 9 reaches the conical guide section 17 of the roller 13 .

In Fig. 3.2, the guide rod 29 is tilted a little to the right and has moved the thread 9 axially on the guide portion 17 of the roller 13 . The guide rod 29 has shifted due to a smaller second thread tension. At a constant roller speed, the thread 9 is now conveyed on a larger peripheral portion of the roller 13 . The greater circumferential speed in relation to the preset thread running speed leads to the thread tension in the thread running in front of the roller increasing. As a result, an increasing resultant force acts on the guide rod 29 , so that the guide rod 29 is returned to a vertical position.

Fig. 3.3 shows the guide rod 29 to the left in a tilted position. This position is reached when the thread 9 has a very high third thread tension. The thread 9 runs on the guide section 17 of the roller 13 in an area with a smaller diameter. The peripheral speed becomes lower, so that the ratio between the peripheral speed and the thread speed leads to a lower thread tension in the thread path in front of the roller. The guide rod 29 now presses the thread 9 back into its vertical position at which the peripheral speed generates the desired thread tension. The desired thread tension, which is defined as the setpoint by the spring force, is thus automatically maintained. The equalization of the thread tension in the parallel threads running parallel is thus achieved without adjusting the drive speed of the roller 13 . In practice, the pivoting movement of the guide rod 29 will be significantly smaller, since the thread fluctuations are relatively small due to the process and the system immediately compensates for the force deviation.

FIG. 4 schematically shows a further exemplary embodiment of a guide means, such as would be used, for example, in the device according to FIG. 1. Here, several guide means are net angeord on a tubular support 30 . The guide means 18.1 and 18.2 are shown in Fig. 4. Each guide means 18.1 and 18.2 is in each case formed by a pivotably mounted guide rod 29 and a tension spring 28 . For this purpose, the guide rod 29 is supported at one end on the pivot axis 27 . The opposite leading end of the guide rod 29 lies outside the carrier 30 for guiding a thread. The pivot axis is fixedly attached to the carrier 30 . At a distance from the pivot axis 27 , a holder 31 is provided to hold the spring 28 tensioned between the holder 31 and the guide rod 29 . The holder 31 is attached to a push rod 32 . The push rod 32 serves to receive the holders 31 respectively assigned to the guide means 18.1 and 18.2 . The push rod 32 is coupled to an adjusting means 33 . The adjusting means 33 can be designed as an adjusting screw, for example. By pressing the steep means, the distances between the pivot axes 27 and the posi tions of the holder 31 can be adjusted, so that a variation of the spring force for setting a predetermined thread tension is possible. The setting acts equally on all guide means 18 arranged on the carrier 30 .

In FIG. 5 another embodiment is shown of a retractable into the yarn path guide means schematically. In Fig. 5.1, the guide means 18 is in an operating position, and in Fig. 5.2, the guide means 18 is in a rest position. The guide means could have the structure described in FIG. 4. The carrier 30 is connected to a swivel arm 34 via the swivel joint 35 . The swivel arm 34 is coupled to the machine frame by the swivel bearing 36 . When starting a spinning process, the guide means 18 is initially in the rest position shown in FIG. 5.2. The threads 9 are first passed over the roller 13 . After the application procedure has ended, the guide means 18 is pivoted by the swivel arm 34 into the operating position shown in FIG. 5.1. The Fa denführer the guide means detects the thread 9 and thus determines the running position of the thread on the guide portion 17 of the roller 13th

In FIG. 6, a further embodiment of the device according to the invention. The structure of this embodiment of the device according to the invention is substantially identical to the previous game in Ausführungsbei according to FIG. 1, so that reference is made to the previous descrip tion and essentially only the differences are described below.

In Fig. 6 the thread course of a thread is shown. In this game Ausführungsbei a treatment device 37 is provided between the spinning device I and the delivery unit 2 . The treatment device 37 in this case comprises a drafting system comprising a plurality of godets in order to pull the thread or threads out of the Spinnein direction and to stretch them. The structure of the treatment device 37 is exemplary and essentially depends on the manufacturing process.

The delivery mechanism 2 is formed from a cantilevered rotatably mounted roller 12 and a second cantilevered rotatably mounted roller 13 . The roller 12 is driven by the roller drive 47 . The roller 13 is driven via the Walzenan 48 driven. Both rollers 12 and 13 are net angeord in the thread course that an S-shaped thread wrap is set at the feed mechanism 2 . The roller 13 has a conical guide section 17 . The Guide section 17 extends over the entire roll width 13th A guide means 18 is provided in the thread path between the roller 12 and the roller 13 . The guide means here has a force transmitter which is designed as a controllable actuator 40 . The actuator 40 is connected to the thread guide 20 . The actuator 40 is controlled via the controller 38 . For this purpose, the controller 38 is coupled to a thread tension sensor 39 . The thread tension sensor 39 is arranged in the thread path between the feed mechanism 2 and the winding device 3 . Furthermore, the regulator 38 is connected to the roller drive 48 of the roller 13 .

In the device according to the invention shown in FIG. 6, the thread 9 is fed to the winding device 3 essentially with a uniform thread tension. For this purpose, the thread tension is measured immediately before entering the winding device by the thread tension sensor 39 . The measurement signal is given to the controller 38 . An actual / target comparison of the thread tensions is carried out within the controller 38 and a control signal is generated in the event of a difference. The control signal is given to the actuator 40 , which adjusts the thread guide 20 in such a way that the starting position of the thread 9 at the guide portion 17 of the roller 13 is changed. In the event that an excessive thread tension is measured in the thread path behind the roller 13 , the thread guide 20 is adjusted such that the starting position of the thread on the guide section 17 is shifted towards a larger diameter. This results in a higher peripheral speed on the roller, which leads to slippage between the roller 13 and the thread 9 when the thread running speed is set to be constant. This causes a thread tension reduction, so that the thread tension in the thread path behind the roller 13 is reduced. The renewed sensor signal by the sensor 39 thus leads to a constant adaptation of the thread course to a predetermined nominal value of the thread tension.

The delivery mechanism can be formed around a plurality of threads guided parallel to one another, as shown in FIG. 7. A pair of rollers consisting of rollers 12 and 13 is assigned to each thread. In Fig. 7 three work stations are shown with the rollers 12.1 , 12.2 , 12.3 and the rollers 12.1 , 13.2 and 13.3 . All rollers are mounted together on a machine frame 16 and can be driven individually or collectively. The rollers 13 each have a truncated cone-like guide section 17.1 for guiding the thread 9 . The rollers 12 are each preceded by thread guides 11.1 and the rollers 13 are each followed by the thread guides 11.2 . The guide means 18.1 , 18.2 and 18.3 are provided in the thread path between the rollers 12 and 13 , respectively. Here, the thread guides 20.1 , 20.2 and 20.3 of the respective guide means 18 are controlled jointly by a force transducer 19 . The transmission between the force transmitter 19 and the thread guides 20.1 , 20.2 and 20.3 takes place via a linkage 46 .

FIGS. 8 and 9 show another embodiment of a delivery mechanism, as it would be used, for example in a device according to Fig. 1 or Fig. 6. In this case, the threads 9 are tension-controlled before entering the winding device 3 . This embodiment is preferable if it is to be expected that the winding device 3 or the bobbins will cause thread fluctuations.

In FIG. 8 is a front view of the feed system is shown schematically. The first roller 12 delivers the thread 9 . From the roller 12 , the thread is conveyed to the roller 13 in a vertical direction. The roller 13 is wrapped with a wrap angle of 180 ° from the thread 9 and to a head thread leader 21 of a winding device 3 . A guide means is provided below the roller 13 , which has a pivotable guide rod 42 with two guide ends 41 and 43 . In this case, the thread 9 is guided through the guide end 41 before it hits the roller 13 and is guided through the guide end 43 after the roller 13 has run out. A thread guide 11.2 is arranged between the guide end 43 and the roller 13 .

FIG. 9 shows a detailed view of the arrangement looking up from the winding device 3 . In FIGS. 9.1, 9.2 and 9.3, the roller 13 is shown with a guide portion 17, the roller 13 is partially obscured by the carrier 44. The thread 9 runs on the right side of the roller on the section 17 and is released on the left side of the roller. Before running up, the thread 9 is touched by the guide end 42 , which determines the running location of the thread 9 on the guide section 1 T of the roller 13 . The thread guide 11.2 guides the thread 9 after it has left the roller 13 . The second guide end 43 of the guide rod 41 then touches the thread. The guide rod 41 is rotatably attached to the pivot axis 45 and connected to a force transducer 19 . For this purpose, the force transmitter 19 has a spring 28 which is tensioned between the guide rod 41 and a holder 31 . The holder 31 can be moved relative to the carrier 44 so that different spring forces can be set. The guide rod 41 is designed so that the He belarm on the thread outlet side in front of the winding device is longer than the lever arm on the thread inlet side between the rollers. This ensures that the thread tension in front of the winding device is the reference variable.

Fig. 9.1 shows the spring-loaded guide rod 41 as it moves the thread after the roll 13 to the right. In this position, the desired thread tension is set in front of the winding device 3 . The thread 9 runs automatically through the guide end 42 conditionally in the desired position on the guide section 17 .

Fig. 9.2 shows a loaded by an accidental high thread tension thread 9. Between the two thread guides 11.1 and 1 I.2, the thread 9 is practically stretched like the rope of a solder. The leading 43 was against. Spring force shifted to the left. This shifts the leading end 42 to the right. The thread 9 now runs on the roller 13 in a position in which the guide section 17 has a larger diameter. The thread 9 is transported here with a greater peripheral speed, whereby the thread force in front of the winding device is reduced, and the guide rod 41 is shifted back into the position according to FIG. 9.1.

Fig. 9.3 shows the thread 9 with a low thread force before Aufwickelein device 3. The guide end 43 has strongly deflected the thread 9 , as a result of which the guide end 42 has shifted the thread 9 to a smaller diameter of the guide section 17 . The transport speed is thereby reduced and immediately leads to an increase in the thread force in front of the winding device 3 . Due to the different lever length of the guide rod 41 to the pivot axis 45 , safe operation is achieved. This ensures that the thread tension acting on the leading end 43 in the running thread always leads the opposite guide end 42 in front of the winding device.

This mode of operation can also be transferred to individual delivery plants according to FIG. 7. Mechanical automatic guide means for Fa are approximately in the examples shown in Figs. 3 to 5 and 8 and 9 respectively exporting described denspannungsbehandlung as for example tung in a Vorrich of FIG. 1 or FIG. 6 would be used. Such devices can be expanded without problems to the effect that the positions of the thread guides 20 of the guide means 18 are detected electronically. This requires a position sensor that registers the position of the thread guide 20 . The position sensor is coupled to a monitoring device so that a thread break monitoring and / or a thread force measurement is possible.

In cases in which an electrical control or regulation of the starting position of the thread is provided on the guide section 17 of the roller 13 , the sensor signals can also be used for thread break monitoring or for quality assurance.

LIST OF REFERENCE NUMBERS

1

spinner

2

delivery mechanism

3

takeup

4

spinning beam

5

spinneret

6

filament bundles

7

cooling shaft

8th

Collecting yarn guides

9

thread

10

Thread guide bar

11

thread guides

12

roller

13

roller

14

roll carriers

15

roll carriers

16

machine frame

17

guide section

18

guide means

19

force transmitter

20

thread guides

21

Yarn guide

22

traversing

23

pressure roller

24

winding spindle

25

spindle drive

26

Kitchen sink

27

swivel axis

28

feather

29

guide rod

30

carrier

31

holder

32

pushrod

33

actuating means

34

swivel arm

35

swivel

36

pivot bearing

37

treatment facility

38

regulator

39

voltage sensor

40

actuator

41

guide rod

42

lead end

43

lead end

44

carrier

45

swivel axis

46

linkage

47

roller drive

48

roller drive

Claims (19)

1. Device for melt spinning and winding at least one thread ( 9 ) with a spinning device ( 1 ), with a reordering th winding device ( 3 ) and with one of the winding device ( 3 ) upstream delivery mechanism ( 2 ) for influencing the thread tension in the thread ( 9 ), which delivery mechanism ( 2 ) has at least one driven roller ( 13 ) partially wrapped by the thread ( 9 ), characterized in that the roller ( 13 ) has a guide section ( 17 ) with an incline in the axial direction that the thread ( 9 ) on the circumference of the guide portion ( 17 ) can be guided and that a guide means ( 18 ) is assigned in the thread path of the roller ( 13 ) through which a starting position of the thread ( 9 ) on the circumference of the guide portion ( 17 ) can be changed in the axial direction is. 2. Device according to claim 1, characterized in that the guide section is frustoconical. 3. Apparatus according to claim 1 or 2, characterized in that the starting position of the thread ( 9 ) on the circumference of the Führungsab section ( 17 ) in dependence on an actual value of the thread tension of the thread ( 9 ) by the guide means ( 18 ) in such a control or it can be regulated that when there is a difference between the actual value and a predetermined nominal value of the thread tension, the starting position is changed towards a smaller diameter of the guide section ( 17 ) or towards a larger diameter of the guide section ( 17 ). 4. Device according to one of claims 1 to 3, characterized in that the guide means ( 18 ) comprises a thread guide ( 20 ) which can be moved back and forth transversely to the thread run and a force transmitter ( 19 ) which interacts with the thread guide ( 20 ), the Thread guide ( 20 ) is arranged in the thread path in front of the roller ( 13 ) and the force transmitter ( 19 ) controls the position of the thread guide ( 20 ) as a function of the thread tension of the thread ( 9 ). 5. The device according to claim 4, characterized in that the force transmitter ( 19 ) is a prestressed spring ( 28 ) and that the spring ( 28 ) generates a deflection force on the thread guide ( 20 ) in the cross direction to the yarn path, the position of the Fa denführer ( 20 ) is determined by a balance between the deflection force of the spring ( 28 ) and the thread tension acting on the thread ( 9 ). 6. The device according to claim 5, characterized in that the thread guide ( 20 ) has a guide rod ( 29 ) which can be pivoted transversely to the thread run, at the free end of which the thread ( 9 ) can be guided, that the spring ( 28 ) between the guide rod ( 29 ) and a holder ( 31 ) is clamped and that the position of the holder ( 31 ) relative to a pivot axis ( 27 ) of the guide rod ge ( 29 ) can be changed. 7. The device according to claim 5 or 6, characterized in that the guide rod ( 29 ) has two opposing guides ( 42 , 43 ) which are pivotable about a common pivot axis ( 45 ), one of the guide ends ( 42 ) the thread ( 9 ) leads in the thread run in front of the guide section ( 17 ) and which at the other guide end ( 43 ) guides the thread ( 9 ) in the thread run behind the guide section ( 17 ), and that in the thread run behind the guide section ( 17 ) the guide end ( 43 ) the guide rod ge ( 41 ) a stationary thread guide ( 11.2 ) is arranged upstream, so that when the guide rod ( 41 ) is deflected, the thread loop is changed on the thread guide. 8. Device according to one of claims 4 to 7, characterized in that one monitoring device and one with the monitoring device Direction associated position sensor assigned to the guide means are, the position of the thread guide by means of the position sensor is detectable. 9. The device according to claim 4, characterized in that the force transmitter ( 19 ) is a controllable actuator ( 40 ), that the actuator ( 40 ) is connected to a controller ( 38 ) and that the controller ( 38 ) has a voltage sensor ( 39 ) is assigned to detect the thread tension of the running thread ( 9 ). 10. The device according to claim 9, characterized in that the tension sensor ( 39 ) is arranged in the thread path in front of the roller ( 13 ) or in the thread path behind the roller ( 13 ). 11. The device according to claim 9 or 10, characterized in that the controller ( 38 ) with the roller drive ( 48 ) of the roller ( 13 ) is connected ver. 12. Device according to one of the preceding claims, characterized in that the guide section ( 17 ) of the roller ( 13 ) has a substantially constant slope or a step-wise variable slope. 13. Device according to one of claims 1 to 12, characterized in that the delivery mechanism ( 7 ) has a second driven roller ( 12 ) which is arranged in the thread path of the roller ( 13 ) with a guide section ( 17 ) and that both rollers ( 12th , 13 ) can be driven by a common drive. 14. Device according to one of claims 1 to 13, characterized in that the guide means ( 17 ) on a movable carrier ( 30 ) is arranged and can be moved by means of the carrier ( 30 ) between a rest position outside the thread path and an operating position in the thread path , 15. Device according to one of claims 1 to 14, characterized in that for guiding several parallel threads ( 9.1 , 9.2 ) on the roller ( 13 ) a plurality of guide sections ( 17.1 , 17.2 ) are formed, each thread ( 9.1 , 9.2 ) a guide section ( 17.1 , 17.2 ) and a guide means ( 18.1 , 18.2 ) are assigned. 16. The apparatus according to claim 15, characterized in that the guide means ( 18.1 , 18.2 ) are arranged in a row next to each other and have a thread guide ( 20.1 , 20.2 ) for each thread ( 9.1 , 9.2 ) and that the thread guide ( 20.1 , 20.2 ) are each controllable by a force generator or collectively by a common force generator. 17. Procedure for changing a thread tension of a running one Thread, in which the thread with a predetermined thread course speed of a delivery plant with at least one drive NEN roller is fed, in which the thread with at least a partial wrap on the roller and in which a peripheral speed of the roller acting on the thread in relation to the thread speed of the thread control cash is characterized in that the thread on the circumference of a guide section of the roller with egg ner slope is performed in the axial direction that the roller with a predetermined speed is driven and that for change change in the effective peripheral speed the start position of the thread on the circumference of the guide section in the axial direction tion is changed. 18. The method according to claim 17, characterized in that the starting position of the thread on the circumference of the guide section tes to change the thread tension in the thread path behind the Roll is controlled so that to increase a thread chip  the starting position towards a smaller diameter of the Guide section is changed and that to reduce a Thread tension the starting position towards a larger through knife of the guide section is changed. 19. The method according to claim 17, characterized in that the starting position of the thread on the circumference of the guide section tes to change the thread tension in the thread run before Roll is controlled so that to increase a thread chip the starting position towards a larger diameter of the Guide section is changed and that to reduce a Thread tension the starting position towards a smaller through knife of the guide section is changed.