EP3168338A1 - Workstation of a two-for-one twister or cabling machine - Google Patents

Abstract

The invention relates to a workstation (1) of a double twisting machine or cabling machine, which has a rotatably mounted spindle (2) and a height adjustable by means of a drive (18, 29) balloon thread guide eye (9). According to the invention, the drive (18, 29) is coupled to a control device (20) which controls the drive (18, 29) so that it can move the balloon thread guide eye (9) between working positions (AP 1, AP 2 ) and a rest position (RS) which is advantageous in the case of production interruptions, and transient work phases associated therewith, and in that means (21, 23, 24, 25) for detecting a measured variable (i) are provided which are made available to the control device (20) and which causes the regulation of the drive (18, 29) to change the position of the balloon thread guide eye (9).

Description

The present invention relates to a workstation of a double twisting or cabling machine having a rotatably mounted spindle and a height adjustable by means of a drive balloon thread guide eye.

Since a simple thread in terms of its strength and / or its uniformity can not meet the requirements that are placed on it during further processing or the final product, it is common in the textile industry, thereby initiating a Garnveredelung that two or more threads be twisted together. This textile process of yarn finishing is generally referred to as plying, although a distinction is made between different types of twisting, for example between double-twisting and cabling.

For example, in double twisting, two sutures are often connected to each other with an S or Z twist, with both sutures each receiving an additional twist. When cabling, however, a second thread is rotated about a template thread, wherein the rotation of the monofilament remains substantially unchanged.

In the case of double-twisting, moreover, there are various types of presentation with respect to the way in which the threads of the twisting machine are fed. The feed yarns can originate, for example, from a pleated feed bobbin, which is mounted in a protective pot of the twisting spindle, or from two feed bobbins arranged one above the other in the protective pot of the twisting spindle, a feed yarn is unwound in each case.

In the present application, the term thread includes all linear structures, such as yarns, film tapes, tubular and ribbon-like textiles and the like. For the sake of simplicity, the term "thread" is used in this application for all possible alternative embodiments.

In the textile machine industry, in connection with the finishing process, twisting has also long been the subject of various embodiments of double twisted wire or twine Cabling known and described in detail in numerous patents.

In all these known double twisting or cabling machines at least one running thread in the form of a thread balloon orbits a twisting or cabling spindle in the region of each work station, before it is wound up by means of a winding device into a take-up bobbin.

Since, in particular with friction-sensitive yarn materials, such as, for example, polypropylene, polyester or polyacrylic, there is a risk of yarn breakage when the yarn balloon comes into contact with the stationary protective pot of the spindle during the twisting or cabling process, it was necessary for such double-twisted yarns. or cabling machines initially customary to adjust the diameter of the thread balloon so that it is safely above the diameter of the stationary protective pot.

However, since large thread balloons known to lead to relatively large ventilation losses and thus to increased energy consumption of the jobs of Doppeldrahtzwirn- or cabling, has been made, especially in connection with less friction-sensitive yarn materials, such as cotton, in the past, various attempts to the diameter to reduce or limit the thread balloons.

In the DE 44 04 555 C1 For example, double twisting spindles are described, which in addition to a supply spool receiving, stationary protective pot have a protective cup, cylinder-like balloon limiter.

In such double-twisting spindles, the emergence of a relatively large in diameter thread balloon is effectively prevented by the fact that the thread immediately starts after leaving the relatively large diameter thread-Abwurftellers the spindle to the inside of the balloon.

In the double twisting spindle according to DE-OS 1 813 801 the supply bobbin is not protected in a stationary protective pot arranged, but is open on a designed as a bobbin component of the double-twisting spindle.
In order to avoid contact between the circulating, outwardly supported on a cylindrical balloon limiter thread balloon and the supply spool, in this known double twisting spindles also arranged between the balloon and the supply spool, cylindrical yarn guide is provided which surrounds the supply spool in height of the Balloonbegrenzeroberkante.

However, a disadvantage of these known double twisting spindles is the relatively long physical contact of the revolving thread balloon with the stationary balloon limiter.

Since the stresses acting on the thread by such stationary balloon limiters are relatively high, such double twisting spindles can only be used for relatively insensitive yarns.

It has therefore already been proposed to influence the size of the thread balloon by controlling or regulating in the thread tension of the thread balloon forming thread is intervened on the jobs of Doppeldrahtzwirn- or cabling.

Such, for example in the DE 10 2008 033 849 A1 Doppeldrahtzwirn- or cabling machines described usually have a plurality of juxtaposed, usually identical trained jobs, the jobs each have a stationary protective cup for receiving at least one feed bobbin, a twisting or Kablierspindel and means for influencing the thread tension.

In a job that works on the double twisting method, for example, a single or multiple folded yarn is withdrawn from a supply cup arranged in the protective cover up and a on the coil axis of the Threaded spindle arranged, controllable yarn delivery mechanism inserted into the upper end of the hollow bobbin axis of the twisting spindle.
That is, the folded yarn is deflected downwards at the yarn delivery device and reaches a rotatably mounted, drivable thread-twisting distribution element arranged below the protective pot and designed, for example, as a so-called twisted plate. The running, feathered thread leaves the twisted plate, which may be formed, for example, as a dump plate with storage disc, via a arranged in the twist plate radial opening and is then guided to a arranged above the protective pot, stationary balloon yarn guide. Due to the rotation of the twist plate between the twist plate and the balloon thread guide eye arranged above the protective pot, the folded thread forms a thread balloon rotating about the protective pot, wherein the size of the thread balloon adjusting during the twisting process can be adjusted by the thread delivery mechanism.

In a workstation that uses the cabling method, two separately arranged feed bobbins are used. A first supply spool is, as usual, positioned in a protective pot of the workplace, while a second supply spool is arranged in an associated creel.

From this in the creel stocked supply bobbin a so-called outer thread is withdrawn and introduced from below into the hollow bobbin axis of a rotatably mounted, drivable Fadendrallerteilungselements, which is formed for example as a twisted plate by a defined controllable yarn delivery.

The running outer thread leaves the storage disk via a radial opening and is then passed, for example, via the twisting plate to a stationary balloon yarn guide arranged above the protective pot.

Also, the outer thread forms due to the rotation of the twisting plate between the twist plate and the above the protective cup arranged Balloon thread guide a rotating around the protective pot thread balloon, the size of which is adjustable during the Kablierprozesses by the yarn delivery.

After passing through the balloon thread guide loop, both the twisted and the cabled thread are wound by a winding device to form a package.

In the workplaces of the above-described double twisting or cabling machines in which the height of the circulating thread balloon is limited by a balloon thread guide or balloon thread guide loop, it is often not possible or usually at least extremely difficult to change with respect to operation of the workstation make the height of the thread balloon.

However, textile devices are also known in the textile machinery industry, in which the height of the thread balloon is adjustable.

In the DE 37 39 175 A1 For example, a creel is described in which the flow behavior of the feed bobbins is optimized by the fact that during operation, depending on the weight of the feed bobbin, constantly changing the distance between the relevant feed bobbin and an associated balloon yarn guide.
That is, in this known creel either the feed bobbins or the balloon yarn guide are movably mounted.

Also in the DE 10 103 892 A1 the height adjustment of a balloon thread guide eyelet is mentioned. However, this document describes a method and a device with which the thread withdrawal speed of supply bobbins arranged in the gate of a warping machine is to be optimized.

Textile machines with movably mounted balloon thread guides or balloon thread guide eyes are also known in connection with ring spinning machines.

In the DE 44 02 582 A1 For example, a ring spinning machine is described, the balloon yarn guide, as usual in such textile machines, are mounted vertically adjustable. That is, the ring spinning machine has on its two longitudinal sides of the machine in each case a plurality of superposed machine banks, wherein above a stationary spindle bank, as known, further, vertically movably mounted machine banks are installed. At the top of these vertically movable machine banks are the balloon yarn guide the numerous jobs of the ring spinning machine arranged. With such an arrangement, all balloon yarn guides on one side of the machine are always displaced together during the spinning operation; a separate control of the balloon yarn guide a single job is not possible.

In the ring spinning machine according to EP 1 071 837 B1 a comparable arrangement is given, however, here the balloon thread guides are additionally arranged tiltable on their vertically displaceable machine bench. Such a tiltable arrangement of the balloon thread guides improves access to the ring spinning spindles and thus greatly facilitates the automation of the bobbin changing operation of the ring spinning machine.

Furthermore, in the EP 2 260 132 B1 a twisting or cabling machine described, the jobs are each equipped with a vertically adjustable Fadenballonführer. In this known textile machine, the production speed of the jobs is to be increased by appropriate positioning of the Fadenballonführers, the yarn quality should be maintained. Regarding the manner of positioning the thread balloon guide, this reference contains no indications.

Based on the above-mentioned prior art, the present invention seeks to provide a job of a Doppeldrahtzwirn- or cabling, which is designed so that the height adjustable by a drive balloon yarn guide eyelet a job is always positioned in an optimal operating position.

This object is achieved in that the drive is coupled to a control device which controls the drive so that he moves the Ballofadenfadenöse between production parameters dependent working positions and an advantageous in production interruption rest position and related transient work phases and that a device for Detection of a measured variable is available to the control device available is made and which causes the rules of the drive to change the position of the balloon thread guide eye.

Advantageous embodiments of the device according to the invention are the subject of the dependent claims.

The device according to the invention has the particular advantage that it is ensured at any time during operation of the job that the Balloon thread guide eye is advantageously positioned. That is, a controller immediately provides, in response to a measure provided by an associated device, promptly for the drive to position the balloon thread guide loop in an optimal operating position. In the event of production stoppages, the balloon thread guide loop is positioned, for example, in a rest position, in which the spindle of the workstation is easily accessible to the operating personnel.

In a first advantageous embodiment, it is further provided that the means for detecting a measured variable is a measuring device which monitors the energy consumption of the spindle drive during operation of the workstation.
That is, by means of a measuring device, the current is detected, which is recorded by the spindle drive and generates a measured variable, the information about the current operating state of the job, especially the size of the thread balloon and thus the position allows the balloon thread guide.
That is, the measuring device, by measuring the power or torque of the drive means of the spindle, creates a measurand that can be used by the controller to favorably position the balloon thread guide loop by means of an associated drive.

However, the measuring device for detecting a processable by the control variable can also have other embodiments.
For example, it is also possible to use a time measuring device which sets a measured variable, for example after a certain period of time, which the workstation needs in order to run up to operating speed after a standstill. processing the control means to cause the drive to displace the balloon thread guide loop from a rest position to a working position.

In a further advantageous embodiment, the device for detecting a measured variable can also be designed as a sensor device which detects the size of a thread balloon encircling the spindle during operation of the workstation. The sensor device is designed, for example, as a light barrier, which has a light source and a light receiver and which scans the circulating yarn balloon with a light beam.

In such a sensor device, the yarn forming the yarn balloon generates a signal during each rotation by shadowing of the light beam, which signal is processed by the sensor device into a measured variable and forwarded to the control device.

As a means for detecting a measured variable, however, a yarn tension sensor can also be used which is arranged in the region of the yarn path of a twisted or cabled yarn, preferably between the rest position of the balloon yarn guide eyelet and a yarn delivery device upstream of the winding device.

Such a yarn tension sensor connected to the control device is also able to generate a measured variable from the measured yarn tension, by means of which the control device then causes the drive of the balloon thread guide eye to optimally position the balloon yarn guide eye of the workstation.

In an advantageous embodiment, each of the jobs of the double-twisting or cabling machine is also equipped with a controllable thread tension influencing device, which is designed, for example, as a thread delivery mechanism or as a thread brake.

Both with a thread delivery unit, as well as with a thread brake, the thread tension of a revolving thread balloon can be very finely adjusted, that is, a Such controllable thread tension influencing device, in conjunction with an advantageous working position of the balloon thread guide eye, at any time optimizes the size and shape of the circulating thread balloon and thus a significant reduction in the energy requirement of the relevant work site.

In an advantageous embodiment, the control device is also designed so that it ensures during operation of the job together with the thread tension influencing device that the balloon thread guide eye is displaced from a first working position to a second working position to reduce the energy consumption of the spindle drive, wherein the second working position of the balloon thread guide eye is preferably arranged between the first working position and the rest position of Balonfadenführeröse.

Preferably, the control device is designed such that signals which are related to a specific event at the relevant workstation, e.g. Spindle start, thread breakage, runtime or game change, are immediately used to a defined rules of the drive of the balloon thread guide eye and thus to an advantageous positioning in a rest position or a working position. As a result of the design of the control device, it is thus ensured at any time during operation of the workstation that the balloon thread guide eye is advantageously positioned. That is, by the control device is depending on a measured variable, which is provided by an associated device and which is related to a particular event at the relevant work, each immediately ensures that a drive optimally positioned the balloon thread guide eye according to the event.

Further details of the invention are the embodiments illustrated below with reference to the drawings removed.

Fig. 1

schematisch, in Seitenansicht eine Arbeitsstelle einer Kabliermaschine, mit einer erfindungsgemäßen, mittels eines Antriebes höhenverstellbaren, in einer Ruhestellung positionierten Ballonfadenführeröse, wobei an den Antrieb der Ballonfadenführeröse eine Regeleinrichtung angeschlossen ist, die mit einer Zeitmesseinrichtung in Verbindung steht; die Arbeitsstelle befindet sich im Stillstand,

Fig. 2

die Arbeitsstelle gemäß Fig.1 während des Betriebes, wobei die Ballon-fadenführeröse aus einer Ruhestellung in eine Arbeitsposition abgesenkt wurde,

Fig. 3

eine zweite Ausführungsform einer Arbeitsstelle einer Kabliermaschine mit einer an den Antrieb der Ballonfadenführeröse angeschlossenen Regeleinrichtung sowie einer Einrichtung, die während des Betriebes der Arbeitsstelle die Energieaufnahme des Spindelantriebs überwacht,

Fig. 4

eine weitere Ausführungsform einer Arbeitsstelle einer Kabliermaschine mit einer an den Antrieb der Ballonfadenführeröse angeschlossenen Regeleinrichtung sowie einer als Lichtschranke ausgebildeten Sensoreinrichtung, die während des Betriebes der Arbeitsstelle den Durchmesser eines umlaufenden Fadenballons überwacht,

Fig. 5

eine dritte Ausführungsform einer Arbeitsstelle einer Kabliermaschine mit einer an den Antrieb der Ballonfadenführeröse angeschlossenen Regeleinrichtung sowie einem Fadenzugkraftsensor zur Überwachung der Fadenspannung zum Beispiel eines Cordfadens,

Fig. 6

eine Arbeitsstelle einer Kabliermaschine mit einer an den Antrieb der Ballonfadenführeröse angeschlossenen Regeleinrichtung, Einrichtungen zur Erstellung von Messgrößen, die die Regeleinrichtung verarbeitet, um die Ballonfadenführeröse zu positionieren sowie einem mit der Regeleinrichtung verbundenen Fadenlieferwerk für den Außenfaden,

Fig. 7

eine Arbeitsstelle mit einer Regeleinrichtung, die eine definierte Verlagerung der Ballonfadenführeröse aus einer ersten in eine zweite Arbeitsposition ermöglicht,

Fig. 8

schematisch, in Seitenansicht eine Arbeitsstelle einer Doppeldrahtzwirnmaschine mit einer mittels eines Antriebes höhenverstellbaren Ballonfadenführeröse, wobei der Antrieb mit einer Regeleinrichtung verbunden ist, an die außerdem ein Fadenzugkraftsensor sowie ein Fadenlieferwerk angeschlossen sind.

It shows:

Fig. 1

schematically, in side view, a workstation of a cabling machine, with an inventive, height-adjustable by means of a drive, in a rest position positioned balloon thread guide loop, wherein the drive of the balloon thread guide loop is connected to a control device which is in communication with a time measuring device; the job is at a standstill,

Fig. 2

the job according to Fig.1 during operation, wherein the balloon thread guide eyelet has been lowered from a rest position to a working position,

Fig. 3

a second embodiment of a workstation of a cabling machine with a connected to the drive of Balonfadenführeröse control device and a device that monitors the power consumption of the spindle drive during operation of the job,

Fig. 4

a further embodiment of a workstation of a cabling machine with a control device connected to the drive of the balloon thread guide eyelet and a sensor device designed as a light barrier which monitors the diameter of a revolving thread balloon during operation of the workstation;

Fig. 5

a third embodiment of a workstation of a cabling machine with a connected to the drive of Balonfadenführeröse control device and a yarn tension sensor for monitoring the yarn tension, for example, a cord,

Fig. 6

a workstation of a cabling machine having a control device connected to the drive of the balloon thread guide eyelet, devices for generating measured variables which the control device processes to position the balloon thread guide eyelet and a thread delivery mechanism for the outside thread connected to the control device,

Fig. 7

a work station with a control device which allows a defined displacement of the balloon thread guide eye from a first to a second working position,

Fig. 8

schematically, in side view, a job of a double twisting machine with a height adjustable by means of a drive balloon yarn guide, wherein the drive is connected to a control device to which also a yarn tension sensor and a yarn feeding system are connected.

In the Fig. 1 is schematically illustrated in side view a job 1 a cabling with a Balloon thread guide eye 9, which is height adjustable by a drive 18. The drive 18 is connected to a control device 20. The workstation 1 is at a standstill, that is, the spindle drive 3 is switched off; the spindle 2 does not rotate.

As in Fig.1 indicated above or behind the workstation 1 (not shown in detail) creel 4 is positioned, which generally serves to receive a plurality of feed bobbins 7.
Of at least one of these feed bobbins 7, hereinafter referred to as the first feed bobbin 7, a so-called outer thread 5 is withdrawn.
As can be seen, the withdrawn from the first feed bobbin 7 outer thread 5 is deflected several times before entering in the region of a rotation axis 35 of the spindle 2 in the hollow axis of rotation of the spindle drive 3.
The outer thread 5 leaves the hollow axis of rotation of the spindle drive 3 through a so-called thread outlet bore arranged somewhat below a protective pot 19 and pointing radially outwards, and reaches the outer area of a thread deflection device 8.
The outer thread 5 is deflected in the area of the Fadenumlenkeinrichtung 8 upwards and reaches a balloon thread guide eye 9, where it meets an inner thread 16.
In spindle standstill, the outer thread 5 is there, as in Fig.1 shown, on the outer wall of the protective pot 19 at.

As already indicated above, the workstation 1 has a rotatably mounted spindle 2 and a Fadenumlenkeinrichtung 8, which rotates about a rotation axis 35.

On the Fadenumlenkeinrichtung 8 a protective pot 19 is arranged, which has a hood 6 with a thread brake 10. In the protective pot 19, a second feed bobbin 15 is mounted, is deducted from the head above the so-called inner thread 16, which passes over the yarn brake 10 to the above the spindle 2 arranged balloon thread guide eyelet 9, where he contacted with the outer thread 5.
The protective pot 19, which receives the second supply spool 15 and which is mounted on the rotatable Fadenumlenkeinrichtung 8 is preferably secured by a (not shown) magnetic device against rotation. The rotatably mounted Fadenumlenkeinrichtung 8 of the spindle 2 is driven acted upon. That is, it is either, as in the present embodiment, a direct drive in the form of a spindle drive 3 is provided or, for example, in Figure 8 shown, an indirect drive device.

The yarns (outer thread 5 and inner thread 16) meeting in the balloon thread guide eye 9 pass via a thread conveyor 11 to a winding and winding device 12, where they are wound up into a package 14.
In other words, the threads 5 and 16 cabled to a cord 13 during a running working process in the area of the balloon thread guide loop 9 are wound on the winding and winding device 12 to form a package 14, which is designed, for example, as a cross-wound bobbin. Cords are twisted, cabled or twisted yarns.

The winding and winding device 12 has for this purpose inter alia a drive roller 17, which drives the package 14 during the work process frictionally.

Like in the Fig. 1 shown schematically, the balloon thread guide eyelet 9 is mounted vertically displaceable and connected to a drive 18, which in turn is connected to a control device 20, which is connected to a time measuring device 23 is. The control device 20 ensures that when the workstation 1 is stationary, the drive 18 positions the balloon thread guide eye 9 in a rest position RS in which the balloon thread guide eyelet 9 is raised slightly. That is, the balloon thread guide eye 9 is positioned so that between the balloon thread guide eyelet 9 and the hood 6 of the protective pot 19, a relatively large distance is given, which has a positive effect on the accessibility of the spindle 2 and the protective pot 19.

The Fig.2 shows the above-described job 1 during operation, that is, while on the job, for example, a cord 13 is cabled.
As already mentioned in connection with the Fig.1 1, an outer thread 5 is withdrawn from a first feed bobbin 7 arranged in a creel 4, which, deflected several times, enters the hollow axis of rotation of the spindle drive 3 in the region of the axis of rotation 35 of the spindle 2.

The outer thread 5 leaves the hollow axis of rotation of the spindle drive 3, as known, through a slightly outwardly of a protective pot 19, radially outwardly facing, so-called Fadenabgangsbohrung, which is part of a rotating Fadenumlenkeinrichtung 8.
When leaving the Fadenumlenkeinrichtung 8, the current outer thread 5 is deflected upward and passes to form a yarn balloon B, the shape and
Size is determined, inter alia, by the position of the balloon thread guide eye 9 and the protective pot 19 circled to the balloon thread guide eyelet 9, where it meets the inner thread 16, which is simultaneously deducted from the top of a second supply spool 15 in a protective pot 19 of the spindle 2 is stored. In the area of the balloon thread guide eye 9, the outer thread 5 and the inner thread 16 are cabled into a cord 13, which is transported by the thread conveyor 11 to the winding and winding device 12 and wound there to form a package 14.

At the start of the work process, the vertically adjustable by means of a drive 18 balloon yarn guide eyelet 9 is initially positioned in a rest position RS. The thread balloon B1 then has a relatively large height and a relatively large diameter D1 up. Such training is air friction technology quite unfavorable and leads to a relatively high energy consumption of the spindle drive. 3
A device 20 connected to the drive 18 of the balloon thread guide loop 9, which is connected to a time measuring device 23, therefore ensures that the balloon thread guide eye 9, as soon as the spindle 2 has reached its operating speed or before the spindle 2 reaches its operating speed, moves into a working position AP is lowered, in which the thread balloon B2 has a much lower height and also a much smaller diameter D2. In this way, it is possible to significantly reduce the energy consumption of the spindle drive 3 of the job 1.
The time required by the spindle 2 to reach its operating speed is monitored by means of the time measuring device 23. That is, the time measuring device 23 provides the control circuit 20 with a measured variable i which it uses to drive the drive 18. However, the time measuring device 23 can also operate with a fixed value, after which it provides the control circuit 20 with a measured variable i available.

In the Figure 3 illustrated embodiment of a job 1 a cabling differs only slightly in their structural design of the above based on the FIGS. 1 and 2 described embodiment.
The following description of Figure 3 is therefore essentially limited to a brief explanation of the differences.

In the embodiment according to Figure 3 the drive 18 for positioning the balloon thread guide eyelet 9 is coupled to a control device 20, which in turn is connected to a device for detecting a measured variable, which in the illustrated embodiment is a measuring device 21 which monitors the energy absorption of the spindle drive 3 during operation of the workstation 1 ,
This means that the measuring device 21 provides the control device 20, when the spindle 2 reaches its operating speed and correspondingly the energy consumption of the spindle drive 3 has reached a certain level, a measured variable i available, which uses the control device 20 for controlling the drive 18.
The drive 18 is for example regulated so that it moves the balloon thread guide eyelet 9 from its rest position RS to its working position AP, in which the thread balloon B2 a significantly lower height and also has a much smaller diameter D2. In this way, it is possible to significantly reduce the energy consumption of the spindle drive 3 of the job 1.

The in the FIGS. 4 and 5 illustrated embodiments of a job 1 a cabling differ from work according to Fig. 3 merely with regard to the design of their devices for detecting a measured variable i.

In the embodiment according to Figure 4 is the device for detecting a measured variable i a sensor device 25, which is designed as a light barrier, that is, a light source 26 and a light receiver 27 has.

Such optical light barriers shading the current thread of a revolving thread balloon B, in the exemplary embodiment of originating from the first feed bobbin 7 outer thread 5, intermittently a light beam 28 from each rotation of the thread ball B, which provides information about the instantaneous speed of the spindle 2 and the diameter allows the thread balloon B.
With such, connected to the control device 20, formed as a light barrier sensor device 25, therefore, not only the diameter of the yarn balloon B can be determined, but also relatively simply monitors the speed of the spindle 2 and upon reaching the operating speed, a measured variable i to the control device 20 are transmitted. The control device 20 then ensures that the drive 18, the balloon thread guide eyelet 9 is optimized with respect to their position, that is, the drive 18 transfers the balloon thread guide eyelet 9 from its rest position RS in the working position AP.

In the embodiment according to Figure 5 is the device for detecting a measured variable i a yarn tension sensor 24, which is arranged in the yarn path of a cord 13 just before the winding and winding device 12.
With such a yarn tensile force sensor 24, the yarn tension of the cord 13 is monitored and generates a measured variable i when the yarn tension reaches a predetermined limit.

The control device 20 when receiving such a measured variable i then, as usual, ensures that the drive 18 transfers the balloon thread guide eye 9 into the working position AP, which leads to a smaller thread balloon and thus to a reduction in the thread tension.

In the Figure 6 1, a workstation 1 of a cabling machine is shown, which has a control device 20 connected to the drive 18 for the balloon thread guide eyelet 9, various devices for detecting a measured variable i, and a thread tension influencing device 22 switched on in the thread running path of the outer thread 5.

Preferably, one of the devices connected to the control device 20 for detecting a measured variable i is a measuring device 21, which, as already described above with reference to FIG Figure 3 stated, monitored during operation of the workstation 1, the power consumption of the spindle drive 3.
In the embodiment of Figure 6 comes as a further means for detecting a measured variable i also a yarn tension sensor 24 is used, which scans the cord 13 and is installed, for example, just below a yarn conveyor 11.
The yarn tension influencing device 22 switched on in the thread running path of the outer thread 5 is, for example, a controllable yarn delivery mechanism or a controllable yarn brake.

With a design of a job 1, as described above, it is ensured that the control device 20, depending on the measured variables i of the devices 21 and / or 24, both always ensures that the drive 18, the balloon yarn guide eyelet 9 positioned advantageous at any time, as well ensures that the yarn tension influencing device 22 keeps the yarn tension of the yarn balloon B2 at an optimum value.

The Fig. 7 shows a workstation 1 of a cabling machine on a slightly larger scale.

As can be seen, in this workstation 1, the balloon thread guide eye 9 can be displaced between a rest position RS which is advantageous in the event of production interruptions and working positions AP ₁ , AP ₂ dependent on spinning parameters, as well as transient work phases associated therewith.

That is, the control device 20 is designed so that, depending on a provided for example by a measuring device 21 available measurement variable i the drive 18 for the balloon thread guide eyelet 9 is controlled so that the balloon thread guide eyelet 9 from its rest position RS initially in an advantageous working position AP _{1 is} relocated. Later, the balloon thread guide eyelet is transferred to an optimal working position AP ₂ , wherein almost simultaneously by means of the thread tension influencing device 22, for example a yarn delivery, the thread tension of the outer thread 5 is slightly increased and thereby a yarn balloon B3 is created with an optimal diameter D3.
In the course of adjusting for the optimization of the thread ball B arise with respect to the working positions of the balloon thread guide eye 9 of course, a variety of working positions, which lie between the working position AP ₁ and the working position AP ₂ .

The Figure 8 shows schematically in side view a workstation 1 of a double twisting machine. The workstation 1 has, inter alia, a spindle 2 designed as a twisting spindle with a protective pot 19 for accommodating at least one supply bobbin 15, a rotatably mounted yarn deflection device 8 and a vertically adjustable balloon yarn guide eye 9.
The balloon thread guide eye 9 is positioned by a drive device 29 which is connected to a control device 20, optionally in a rest position RS or in one of the working positions AP ₁ and AP ₂ or intermediate positions.

As can be seen, a yarn tension force sensor 24, a yarn delivery mechanism 31 and a drive device 30 for the spindle 2 or its Fadenumlenkeinrichtung 8 are also connected to the control device 20.

A withdrawn from a supply spool 15 thread 28 is inserted from above into a arranged in the region of a rotation axis 35 of the spindle 2, the hollow axis of rotation of the Fadenumlenkeinrichtung 8 and passes through the yarn delivery plant 31st
The thread 28 leaves the hollow axis of rotation through a somewhat lower than a protective pot 19, radially outwardly facing, so-called Fadenabgangsbohrung and reaches the outside of the Fadenumlenkeinrichtung. 8
The thread 28 is, as usual, deflected at the Fadenumlenkeinrichtung 8 upwards and, forming a yarn balloon B1, to the balloon yarn guide eyelet 9, which at this time, that is, when the spindle has reached operating speed 2 or before, in a rest position RS is positioned.

The thread 28, which is formed as a double wire, passes via a thread conveyor 11 to a winding and winding device 12, where the twisted yarn is wound into a package 14.

In the present exemplary embodiment, the spindle 2 has an indirect drive device 30. That is, the Fadenumlenkeinrichtung 8 has a whorl 32, which is acted upon by a drive belt 33, which also runs over a Antriebswirtel 34, for example, a machine-driven drive shaft 36. The drive shaft 36 is connected, for example via a belt drive 37 to a drive 38.
Once a connected to the drive 38 measuring device 21, for example, monitors the power consumption of the drive 38, registered, for example, that the spindle 2 runs at operating speed, a measure i sent to the controller 20, which then ensures that the drive means 29, the balloon thread guide eyelet 9 from the rest position RS transferred to a working position AP ₁ .

In order to further increase the profitability of the double twisting machine, following the displacement of the balloon thread guide eyelet 9 into the working position AP ₁ by means of the thread delivery mechanism 31, the thread tension of the plied thread 28 circulating as the filament balloon B2 can be increased while the balloon thread guide eyelet 9 is moved into an optimal working position AP ₂ be converted, wherein a yarn balloon B3 is provided with an optimum diameter D3.

In the course of the transfer of the Balloon thread guide eye 9 from the working position AP ₁ in the working position AP ₂ , of course, there are a variety of other working positions that lie between the working position AP ₁ and the working position AP ₂ .

Claims (11)

Workstation (1) of a double twisting machine or cabling machine, which has a rotatably mounted spindle (2) and a balloon thread guide eye (9) which can be adjusted in height by means of a drive (18, 29),
characterized,
in that the drive (18, 29) is coupled to a control device (20) which controls the drive (18, 29) to move the balloon thread guide eyelet (9) between production parameter dependent work positions (AP ₁ , AP ₂ ) and at Production interruptions advantageous rest position (RS) and related transient work phases shifted and
in that there is a device (21, 23, 24, 25) for detecting a measured variable (i) which is made available to the control device (20) and which regulates the drive (18, 29) for changing the position of the balloon thread guide eye ( 9) causes. (I) is working point (1) of a two-for or cabling machine according to claim 1, characterized in that the device for detecting a measured variable, a measuring device (21) during operation of the work station (1) monitors the power consumption of the spindle drive (3) , Workstation (1) of a double twisting or cabling machine according to claim 1, characterized in that the means for detecting a measured variable (i) is a time measuring device (23). Workstation (1) of a double twisting machine or cabling machine according to claim 1, characterized in that a sensor device (25) is used as device for detecting a measured variable (i), which during operation of the workstation (1) is the size of a spindle ( 2) encircling thread balloon (B) detected. Workstation (1) of a double twisting or cabling machine according to claim 1, characterized in that the means for detecting a measured variable (i) is a yarn tensile force sensor (24). Workstation (1) of a double twisting machine or cabling machine according to claim 1, characterized in that in the area of the yarn path of a balloon thread (5, 28) a controllable thread tension influencing means (22, 31) is installed. Workstation (1) of a double-twisting or cabling machine according to claim 6, characterized in that the yarn tension influencing means (22, 31) is designed as a yarn delivery mechanism. Workstation (1) of a double twisting or cabling machine according to claim 6, characterized in that the thread tension influencing means (22, 31) is designed as a thread brake with which the thread tension of the balloon thread (5, 28) is adjustable. Workstation (1) of a double-twisting or cabling machine according to claim 1, characterized in that the control device (20) is designed so that signals which, in relation to a specific event at the relevant workstation (1), z. B. spindle start, thread breakage, runtime or game change, are used to a defined rules of the drive (18, 29) of the balloon thread guide (9) and their positioning in an associated working position (AP ₁ ) or a rest position (RS). Workstation (1) of a double twisting or cabling machine according to claim 1, characterized in that the control device (20) is designed so that during operation of the workstation (1) ensures that to reduce the energy consumption of the spindle drive (3) Balloon thread guide eye (9) from a first working position (AP ₁ ) is moved to a second working position (AP ₂ ). Workstation (1) of a double-twisting or cabling machine according to one of the preceding claims, characterized in that the second working position (AP ₂ ) of the balloon thread guide eye (9) between the first working position (AP ₁ ) and the rest position (RS) of the balloon thread guide eye (9) is arranged.

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