WO2018100142A1

WO2018100142A1 - Method and device for creating a plurality of synthetic threads on a winding machine

Info

Publication number: WO2018100142A1
Application number: PCT/EP2017/081158
Authority: WO
Inventors: Rainald Voss
Original assignee: Oerlikon Textile Gmbh & Co. Kg
Priority date: 2016-12-02
Filing date: 2017-12-01
Publication date: 2018-06-07
Also published as: DE112017005467A5

Abstract

The invention relates to a method and to a device for creating a plurality of synthetic threads (12.1-12.4) on a winding machine (13). The problem addressed by the invention is that of providing a device by means of which said creation method can be carried out as simply, safely and utilizing as little space as possible. This aim is achieved in that a plurality of head thread guides (16.1-16.4) are guided by the end face (15) of the winding machine (13) by means of an endless conveying means (18). During this process, a given thread (12.1-12.4) is transferred to the head thread guide (16.1-16.4) associated therewith. Such a device is used in particular in winding machines for winding partially or fully drawn synthetic threads for textiles or technical application fields and crimped threads for the carpet industry.

Description

Method and device for applying a plurality of synthetic threads to a winding machine

The invention relates to a method and a device for applying multiple synthetic threads to a winding machine according to the preambles of claims 1 and 6.

There are melt spinning plants known in which multifilament threads are made of synthetic polymers. In this case, the synthetic polymer, such as a polyester or a polyamide, extruded in melt-liquid form by means of spinnerets, cooled, stretched and wound into coils to complete the process. This winding is implemented by means of a winding machine, as is known, for example from EP2147137 Bl. First, the threads touch the rewinder on so-called head thread guides. These thread guides serve to allow the threads to be flipped and fed by means of several traversing means. By this Flin- and Herführen with simultaneous rotation of a winding spindle, the coils are formed. In the winding machine from EP2147137 Bl, the head thread guides are designed as rollers, so that friction influences on the threads are minimized. At the beginning of the melt spinning process, or in the event of unplanned disturbances, the threads must be applied to the rewinder, and in particular to the head thread guides. The threads are mithilf e performed a suction gun. In the winding machine from EP2147137 B1, a thread guide carrier is used to apply the threads to the head thread guides, the head thread guides being fastened to the thread guide carrier. This yarn guide carrier is manually led out of the reel-up to apply the threads successively on one end side of the reeling machine to the individual head thread guide. Doing this is the bar piece by piece from a waiting position, in which the yarn guide carrier is completely pulled out of the winding machine, returned to an operating position. In this process, there is always a head thread guide in a contact position in which a thread is passed to him. In the operating position, the head thread guides are arranged centrally and above a respective associated winding unit, wherein during operation of the system at each winding unit, a coil is formed. This process of application is problematic in today's high numbers of winding units, since the yarn guide carriers are very long. The process can only be implemented by one operator. With higher numbers of winding units, this is no longer possible. In order to increase the productivity of the entire melt spinning plant on, but just the increase of the winding units per winder is an important approach. While the yarn guide carrier is in the waiting position, it protrudes into an operating passage adjacent to the winding machine. This is not or only partially usable at this time, for example, to transport finished coils. Automation of the application process appears to be difficult when using the yarn guide carrier.

It is therefore an object of the invention to provide a generic method and a generic device by means of which the application of multiple synthetic threads to a reeling machine is possible as simply as possible with little space.

This object is achieved by the head thread guides are passed by means of an infinite conveyor on the front side of the rewinder.

So little space is required for applying the threads to the head thread guide. The operation is thus also during the landing used, for example, to transport finished coils of other winders. Furthermore, the application is greatly simplified by the fact that the application occurs almost at one position. A suction gun, by means of which the threads are guided during the application process, has to be moved only slightly during this application process. The movement of the suction gun can be carried out for example by an operator or by a robot. If the suction gun is guided by an operator, this operator can pay close attention to the handling of the suction gun. The movement of the head thread guides is indeed carried out using the infinite conveyor. A robot for guiding the suction gun must have a low complexity due to the method according to the invention. The simplifications of the application method described above result in that the application can be carried out more quickly and more reliably, ie with fewer false attempts.

Similar advantages with respect to application also result from a further exemplary embodiment, which is shown in FIG. 6 of EP2147137 B1. Here, the last godet in front of the winder is transferred from a landing position to an operating position for application, wherein each thread is applied to the associated head thread guide. However, during operation of the melt spinning plant, a large distance arises between the two godets used, which is not conducive to process reliability or to a stable yarn path.

In one embodiment of the invention, each head thread guide is guided on a separate guideway. Because of these separate guideways, the application of the threads to the head thread guides is further facilitated, as explained below. The suction gun is held at a defined position, so that the threads pass by a certain distance from each other on the conveyor. The threadline of each thread crosses an associated guideway of the head thread guide. If the head thread guides are now transferred by means of the conveying means from a waiting position into the operating position, then each thread is automatically taken over by the associated head thread guide on the front side of the winding machine without the suction gun having to be moved. At the front of the rewinder is the so-called application position of the head thread guide.

It is also advantageous if the infinite conveying means is moved at an angle to the axis of a winding spindle of the winding machine. This ensures that the head thread guides, despite their movement on different guideways in their operating positions are each arranged centrally above the associated winding unit. This is necessary to wrap coils of high quality. Each head thread guide has the same distance and the same position to the its associated winding unit.

In another embodiment of the invention, all the head thread guides are moved on a common track. This allows a particularly simple construction of the infinite conveyor and the attached overhead thread guide, as well as their arrangement in the on winding machine. Such a simple construction is inexpensive to produce, especially since many parts are identical. Furthermore, this simplicity leads to a particularly robust behavior of the device during operation and in addition to a simple control. These advantages are, in contrast to the above-mentioned embodiment with several guideways, paid for by the fact that the suction gun can not be held in one position during the transfer of the threads on the front side of the rewinder to the head thread guides, but has to be moved in order to NEN to pass each thread to its associated head thread guide.

In a common guideway for all head thread guides, is ensured in a guide of the conveyor parallel to the axis of the winding spindle that the head thread guides are arranged in their operating positions respectively centrally above the associated winding unit.

The above object is achieved by a generic device according to the invention by the head thread guides are attached to an infinite funding, by means of which the movement of the head thread guide on the front side of the take-up machine is over past.

Thus, the device for applying a plurality of synthetic threads takes up very little space. At any time of the operation of the application device, whether the head thread guides are in a waiting, applying or in an operating position, the device hardly projects out of the winding machine. Such a device by means of an infinite conveyor is structurally simple and inexpensive to implement. The separation of the functions of the movement of the head thread guide and the movement of the Saugpis- tole by different energy sources leads to the application of the threads to the head thread guide is easy to carry out. Thus, the process of applying the threads to the head thread guides can be implemented quickly and with few failures. In one embodiment of the invention, each head thread guide is arranged with a different distance to the funding out, or attached to this. So the head thread guides are on different guideways feasible. This fact allows the suction gun to be held in a fixed position during the application process, with each head thread guide taking over the associated thread as it passes the yarn sheet. The fact that the suction gun does not have to be moved during the application process to the head thread guide facilitates this process considerably.

Nevertheless, in order to achieve the same distance and an identical position to the associated winding unit in an operating position of the head thread guide, the conveyor is arranged in an embodiment of the invention at an angle to the axis of the winding spindle. This is necessary in order to achieve a high and over all winding units uniform thread quality. This angle of the conveying means to the axis of the winding spindle is to be observed in particular, or close to the operating position in order to achieve the said advantage. In the following areas, the angle plays a minor role. In a preferred embodiment of the invention, the head thread guides are designed as rolls. These rollers are connected by means of a respective axis of rotation with the conveyor. These rollers lead in operation rewinder to a gentler thread guide as a fixed head thread guide. There is no sliding friction between the thread and the rollers, and the influence of the roller on the thread tension is minimal. So a high thread quality, with low variance between the individual, parallel wound threads can be achieved. In a further development of the invention, angles are formed between the direction of movement of the conveying means and the axes of rotation of the head thread guides, these angles in each case have the same values as the above-mentioned angle between the direction of movement of the conveyor and the axis of the winding spindle. As a result, in spite of the inclined position of the conveyor, in contrast to the winding spindle, the axis of the winding spindle and the axes of rotation of the rollers are perpendicular to one another. The reciprocating movement of a traverse spindle and rollers arranged traversing means is parallel to the axis of the winding spindle. During traversing, the yarn is thus moved back and forth only in the direction of a guide track of the roller and not at an angle to this guide track. This would have negative effects on a constant thread quality and on a good coil construction.

In another embodiment of the invention, the conveying means is arranged such that its direction of movement runs in the operating range of the head thread guide parallel to the axis of the winding spindle. Such an arrangement leads to a simple construction of the winding machine, which is thus easy and quick to install.

In one embodiment of the invention, each head thread guide with the same distance to the funding attached to this. The length of all axes through which this attachment is implemented is the same. Thus, the same elements can be used, which has a positive effect on the manufacturing or procurement costs of these. The head thread guides are therefore feasible on one and the same guideway.

In a further embodiment of the invention, two adjacent head thread guides each have an equal distance from one another. This ensures that all coils with the same width have a constant quality. By means of two deflection pulleys for guiding the conveying means, wherein one of the two deflection pulley is coupled to a motor, a simple cost-effective drive of the head thread guide with sufficiently precise control of the speed and position can be implemented.

If the conveyor is designed as a chain, then no variation of the positions of the head thread guide is possible, which could lead to inconsistent thread or coil quality. Such a chain is simple in construction and thus inexpensive to buy. The life of such a chain is also very long.

The apparatus shown above is used in particular in take-up machines for winding partially or fully drawn synthetic threads for textile or technical fields of application as well as crimped threads for the carpet industry.

The method according to the invention will be explained in more detail below with reference to some embodiments of the device according to the invention with reference to the attached figures.

They show:

Fig.l schematically shows a front view of a first embodiment of the device according to the invention in a plant for spinning spun and winding synthetic

threads

2 shows schematically a plan view of a first embodiment of the device according to the invention

3 is a schematic plan view of a second embodiment of the device according to the invention

4 shows schematically a plan view of a third embodiment of the device according to the invention

FIG. 1 shows the device according to the invention in a reeling machine 13. In addition, many elements of the thread production are shown in FIG. 1, which will be discussed first. During operation of the plant, a synthetic plastic in liquid form is fed to a spinning bar 2 via a melt feed 1. This spinning beam 2 serves inter alia to receive a spinneret 3, which has a plurality of nozzle bores through which the liquid plastic is extruded. This results in a large number of filaments, which are cooled by a blow 4, so that the liquid plastic passes into a solid state. In general, all filaments extruded from a spinneret 3 are combined to form a thread 12.1. This purpose is a Sammelf Adenführer 5. In the spinning beam 2 shown here four spinnerets are arranged one behind the other, but due to the perspective, only the one spinneret 3 can be seen. As an example, four synthetic threads 12.1 -12.4 are melt-spun in parallel and wound up in the system shown here. These four threads are after the Bundling means of a preparation device 6 with a prepara- tion fluid acted upon. For this purpose, for example, a preparation roller or a plurality of pen thread guides could be used. By means of a yarn guide strip 7, the four threads 12.1 -12.4 are brought to a treatment distance from each other, by means of which they are guided via a withdrawal godet 9, by a swirling device and a Ablaufgalette 11. Between thread guide strip 7 and Abzugsgalette 9 a Fadensammelvorrich- device 8 is arranged. By means of this thread-collecting device 8, all threads can be gathered together, separated and removed by means of a suction during a yarn breakage. After leaving the Ablaufgalette 11, the four threads 12.1 -12.4 of the reeling machine 13 at four winding stations 30.1 - 30.4 are wound into a respective coil 29. As the first element of the take-up machine 13, the threads 12.1 -12.4 each contact a head thread guide 16.1-16.4. These thread guides 16.1 - 16.4 serve to divide the threads 12.1 -12.4 on the winding units 30.1 - 30.4. In addition, they allow a means of a traversing means 22 implemented reciprocation of each thread 12.1 -12.4. The flow point of a thread 12.1 of its associated head thread guide 16.1 and the end points of a traversing yarn guide, which is part of the traversing means 22, form a traversing triangle. Due to the distance between the end points of the movement of a traversing yarn guide, the width of the coil 29 is determined. The head thread guides 16.1-16.4 are designed as rollers in this exemplary embodiment, so that the friction load on the threads 12.1-12.4 is distinctly reduced in contrast to the use of fixed head thread guides 16.1-16.4. The head thread guides 16.1-16.4 are attached to an infinite conveyor 18. This infinite conveyor 18 is designed in this embodiment as a chain and can be offset by means of two pulleys 20.1 and 20.2 and a motor 19 in motion. The movement of Chain and thus the head thread guide 16.1 - 16.4 is important when creating the threads 12.1 -12.4 to the head thread guide 16.1 - 16.4 at the beginning of operation of the reeling machine 13, which will be discussed later. For winding up the threads 12.1 -12.4, the winding machine 13 has two winding spindles 27.1 and 27.2 used alternately, on each of which four winding sleeves 28 can be clamped. By means of a rotatable spool turret 26 a change of the winding spindles 27.1 and 27.2 from an upper operating position to a lower change position is possible. In the operating position, the threads 12.1 -12.4 are wound into coils 29; in the change position, the fully wound coils 29 can be removed. The winding turret 26 is held in a machine frame 14 of the reeling machine 13. In order to ensure a good coil construction and for control purposes, a pressure roller 25 mounted on a rocker 24 rests on the surfaces of the coils 29 to be wound.

At the beginning of the process or after a fault, threads 12.1 - 12.4 must be newly created. For this purpose, the threads 12.1 to 12.4 are guided by means of a suction gun 23. In the event of a fault, the threads 12.1 to 12.4 are taken from the suction of the thread-collecting device 8 by means of the suction gun 23, at the beginning of the process already before. In the following, the threads 12.1-12.4 are guided around the trigger galette 9, through the swirling device 10, around the run-off belt 11 as far as an end face 15 of the rewinding machine 13. At this time, the application of the threads 12.1 - 12.4 begins to the winding machine 13 and in particular to the head thread guide 16.1 - 16.4. At this point should be discussed only roughly on this process, further details are explained in the descriptions of the other figures. The illustration of Fig. 1 shows the reeling machine 13 during operation, so that the head thread guides 16.1 - 16.4 in an operating position are located. When applying the head thread guides 16.1 - 16.4 are guided from a backward waiting position to the operating position. This is done by means of the drive device of the conveying means 18, which consists of the two deflection pulleys 20.1 and 20.2 and the motor 19. The head thread guides 16.1-16.4 are guided past the contact position, ie the end face 15 of the rewinder 13. At this point, each thread 12.1 - 12.4 is passed to its associated head thread guide 16.1 - 16.4. Further aids for applying the threads to the subsequent elements of the winding machine 13 are not shown for the sake of clarity. By means of such an aid and the suction gun 23, the threads 12.1 -12.4 are guided until the winding on the winding tubes 28 begins. The representation of four threads 12.1 -12.4 is selected exemplary, in the rewinding machines with significantly more winding units are used, the development tendency is aligned to an ever increasing number of winding units. 2 shows schematically a top view of a first embodiment of the device according to the invention. The same reference numerals as in FIG. 1 are used below. For the sake of clarity, only the components relevant to the invention are shown in this view.

The head thread guides 16.1 - 16.4 are located in solid lines in the waiting position and are shown in dashed lines in the operating position. The head thread guides 16.1-16.4 are designed as rollers, which are each rotatably mounted on an associated rotation axis 17.1-17.4. With the opposite end of the rolls of the axes of rotation 17.1 - 17.4 these are attached to the running here as a chain conveyor 18. The conveyor 18 has no end and is guided by means of the two deflection pulleys 20.1 and 20.2, wherein the deflection pulley 20.1 can be driven by means of the motor 19, not shown here. In the operating position, the head thread guides 16.1 - 16.4 are each centrally above the associated winding tube 28 to ensure the winding high-quality coils 29. Each winding unit 30.1 - 30.4 is associated with a winding tube 28. The course of the conveyor 18 is in the operating position parallel to the axis of the winding spindle 27.1. This circumstance in combination with the fact that all axes of rotation 17.1-17.4 have the same length, causes the head thread guides 16.1-16.4 are arranged centrally above the winding unit 30.1-30.4. Furthermore, the axes of rotation 17.1-17.4 perpendicular to the axis of the winding spindle 27.1 in the operating position, as well as perpendicular to the conveying means 18 are arranged.

The application process to the head thread guides 16.1-16.4 will now be described below. The threads 12.1 -12.4 are guided by means of the suction gun 23 so that they run from the expiry galette 11 vertically downwards. Due to the perspective, however, the threads 12. 1 - 12. 4 are only visible during the inflow to the run-off belt 11. It could be used as Ablaufgalette 11 also a godet with a smooth surface without the outlined grooves for each thread. With reference back to Fig.l it should be made clear at this point that a management level of the head thread guide 16.1 - 16.4 between the Ablaufgalette 11 and the winding spindle 27.1 is located. The suction gun 23 is arranged so far down that the threads 12.1 -12.4 penetrate this guide level in the region of the end face 15 of the winding machine 13. Due to the same length of all axes of rotation 17.1 - 17.4 all head thread guides 16.1 - 16.4 out on one and the same guideway 21.1. In order to keep the threads 12.1-12.4 in contact with the belonging to head thread guides 16.1 - 16.4, these are transported from the waiting to the operating position. For this purpose, the deflection pulley 20.1 is rotated by means of the motor 19. On the front side 15, in each case a thread 12.1- 12.4 is taken over by a head thread guide 16.1-16.4. To make this possible, the suction gun 23 is moved perpendicular to the axes of rotation 17.1 - 17.4 in the landing area. This movement takes place between the time when a thread, for example, thread 12.4 has just been taken over by its associated head thread guide 16.4, and before the head thread guide 16.3 subsequently fastened to the conveying means 18 reaches the end face 15. This ensures that for the transfer of the threads 12.1 -12.4 to the head thread guides 16.1 - 16.4 always a thread 12.1 -12.4 penetrates the guide track 21.1. Fig. 3 shows a second embodiment of the invention, analogous to FIG. 2 in a plan view. The same reference numerals are used for the same components as in the preceding figures. Since Fig. 3 and Fig. 2 are similar in many parts, will be discussed below only the changes. The main difference lies in an inclined position of the winding spindles 27.1 and 27.2. Between the axis of the winding spindle 27.1 and the direction of movement of the conveyor 18 in the operating range, an angle α is formed. In order nevertheless to ensure that each head thread guide 16.1-16.4 is arranged centrally above the winding tube 28 assigned to it, the axes of rotation 17.1-17.4 have different lengths. The length of the axes of rotation 17.1 - 17.4 decreases from the axis of rotation 17.1 to the axis of rotation 17.4 linearly. Because of these different lengths of the axes of rotation 17.1-17.4, each head thread guide 16.1-16.4 is guided by means of the conveying means 18 on a separate guide track 21.1-21.4. When applying to the head thread guide 16.1 - 16.4 the suction gun 23 is initially positioned so that each thread 12.1 -12.4 the guideway 21.1 - 21.4 penetrates the associated head thread guide 16.1 - 16.4. In the further course of the conveyor 18 is set in motion, so that the head thread guides 16.1 - 16.4 from the waiting position, also shown here with solid lines, in the operating position, shown with dashed lines move. At the end face 15 of the reeling machine 13, each thread 12.1 -12.4 is thus automatically applied to the associated head thread guide 16.1-16.4, without the suction gun 23 having to be moved.

The angle α is advantageously chosen such that the treatment distance of the threads 12.1 -12.4 to each other between the Ablaufgalette 11 and the head thread guides 16.1 - 16.4 does not change. Thus, a deflection of the threads 12.1 - 12.4 on or after the Ablaufgalette 11 is avoided.

Fig. 4 shows a third embodiment of the invention, analogous to FIG. 3 in a plan view. The same reference numerals are used for the same components as in the preceding figures. Since Fig. 4 and Fig. 3 are largely similar in the following, only the changes will be discussed. In addition to the oblique position of the winding spindle 27.1 to the direction of movement of the conveyor 18 in the operating range by the angle α, the axes of rotation 17.1 - 17.4 are not perpendicular to the conveyor 18 as in the preceding embodiments. Between the perpendicular to the conveyor 18 and the axes of rotation 17.1 - 17.4 results here an angle ß. The angle α and the angle β have identical values, so that the axes of rotation 17.1-17.4 and the axis of the winding spindle 27.1 perpendicular to each other, as is the case with the first embodiment of FIG. This fact is for a good spun lenaufbau advantageous because the threads 12.1 - 12.4 not move on the head thread guides 16.1 - 16.4 back and forth despite the traversing movement. The application process is identical to that of the second in this third embodiment.

The conveyor 18 is implemented in the foregoing descriptions of the embodiments of the invention as a chain. Alternatively, it would also be conceivable to use a belt with or without teeth, a rope or the like.

Claims

claims

A method for applying a plurality of synthetic threads to a winding machine, wherein the threads are guided by means of a suction gun, wherein a plurality of head thread guides are guided from an operating position to a contact position on an end side of the Aufwi-kelmaschine, each thread using the suction gun at the front side is applied to an associated head thread guide, whereupon the head thread guides are returned to an operating position, wherein the threads contact the reeling machine first to these thread guides, these contacts remain during operation of the reel-up, characterized in that the head thread guides by means of an infinite conveying means on the Front side of the rewinding be passed.

A method according to claim 1, characterized in that each head thread guide is guided on a separate guideway.

A method according to claim 2, characterized in that the conveying means is guided at an angle to the axis of a winding spindle of the Aufwi- ckelmaschine.

A method according to claim 1, characterized in that all head thread guides are guided on a common guideway.

A method according to claim 4, characterized in that the conveying means is guided parallel to the axis of the winding spindle of the winding machine.

Apparatus for applying a plurality of synthetic threads (12.1-12.4) to a winding machine (13) which comprises a suction gun (23) has by means of which the threads (12.1 -12.4) can be guided, wherein a plurality of head thread guides (16.1 -16.4) between an operating position and a contact position on an end face (15) of the Aufwi- ckelmaschine (13) back and forth feasible, wherein each thread (12.1 -12.4) can be applied by means of the suction gun (23) on the end face (15) to an associated head thread guide (16.1 -16.4), a first contact between the threads (12.1-16.4) being achieved by means of the head thread guides (16.1-16.4) 12.4) and the reeling machine (13), whereby the threads (12.1-12.4) can also be guided during operation of the rewinding machine (13) by means of the head thread guides (16.1-16.4)

characterized in that the head thread guides (16.1 -16.4) are attached to an infinite conveying means (18) by means of which the movement of the head thread guide (16.1 -16.4) on the end face (15) of the reeling machine (13) can be implemented over.

Apparatus according to claim 6, characterized in that each head thread guide (16.1 -16.4) is fastened to the conveying means (18) and has a different distance from the conveying means (18), so that each head thread guide (16.1-16.4) is mounted on a separate guide track (16.1-16.4). 21 .1 -21 .4) is feasible.

Apparatus according to claim 7, characterized in that the conveying means (18) is arranged such that a direction of movement of the conveying means (18) at an angle (a) to an axis of a winding spindle (27.1, 27.2) of the reeling machine (13).

Device according to one of the preceding claims, characterized in that the head thread guides (16.1 -16.4) are designed as rollers, which are rotatably supported on rotational axes (17.1 -17.4).

10. The device according to claim 9, characterized in that an angle (ß) between the direction of Förderin ittels (18) and the axes of rotation (17.1 -17.4) of the head thread guides (16.1 -16.4) is formed and that the angle (a) and the Angle (ß) have the same values.

1 1. Apparatus according to claim 6, characterized in that the conveying means (18) is arranged such that the direction of movement of the conveying means (18) is arranged parallel to the axis of the winding spindle (27.1, 27.2) of the reeling machine (13).

12. Device according to claim 11, characterized in that each head thread guide (16.1-16.4) is fastened to the conveyor (18) and has the same distance from the conveyor (18), so that all the head thread guides (16.1-16.4) and the same guideway (21 .1 -21 .4) are feasible.

13. Device according to one of the preceding claims, characterized in that the head thread guides (16.1 -16.4) with the same distance to each other on the conveyor (18) are attached.

14. Device according to one of the preceding claims, characterized in that the conveying means (18) by means of two deflection pulleys (20.1, 20.2) is guided, wherein one of these deflection pulleys (20.1, 20.2) by means of a motor (19) is drivable.

15. Device according to one of the preceding claims, characterized in that the conveying means (18) is designed as a chain.