EP3235769A1 - Paraffin device for a textile machine for the production of cross-wound spools - Google Patents

Abstract

The invention relates to a waxing device (19) for a textile machine (1) producing cross-wound bobbins, having a paraffin body (23) axially displaceably mounted in a bearing housing (30), which is rotated during the winding process by means of a defined controllable drive (34) in the region of a waxing plane ( PE) of the waxing device (19) can be positioned, in which the front face (46) of the paraffin body (23) bears against a running thread (16). According to the invention, the paraffining device (19) has a sensor device (40) connected to a work station computer (28) or a sensor system (50) which monitors whether the front face (46) of the paraffin body (23) in FIG Position of the paraffin level (PE) of the paraffining device (19) is positioned and the workstation computer (28) is designed so that it, if this is not the case, corrects the feed rate of the drive (34).

Description

The invention relates to a paraffining device for a cross-wound textile machine, with a paraffin body mounted axially displaceably in a bearing housing, which can be positioned during the winding process by means of a defined controllable drive in the region of a Paraffinierebene the waxing device in which rests the front of the Paraffinkörpers on a running thread ,

In the textile machinery industry, paraffining devices have long been used, in particular also in connection with textile machines producing cross-wound bobbins. The paraffining devices can have quite different embodiments, which are described in detail in the patent literature in part.

Such paraffining devices are known in cheese-making textile machines used primarily to reduce the coefficient of friction of a yarn during the winding process. That is, during the rewinding of small volume, usually made on ring spinning machines spinning heads to large-volume cheeses, which is done for example on so-called cheese, paraffin particles are applied to the yarn, which improve the running and sliding properties of the yarn, resulting in particular in the production process Processing operations, such as in knitting or knitting, is of considerable importance. Alternatively, the paraffining device can be arranged upstream of the winding device of a rotor spinning machine.

Such Paraffiniereinrichtungen, for example, in the CH 706 608 A2 or the DE 40 10 469 A1 are described in detail, have a Paraffinkörper which, in order to achieve the most uniform wear of Paraffinkörpers slowly rotates about its central longitudinal axis and at the same time is acted upon by a loading device axially in the direction of the running thread. That is, such Paraffiniereinrichtungen contact with the front of her Paraffinkörpers a running and iridescent thread and paraffinieren him.

The loading device for moving the rotatably but axially displaceably mounted on a drivable bearing shaft paraffin body may have different embodiments.

In the CH 706 608 A2 comes as a load device, for example, a coil spring used, which, arranged behind the paraffin body on the bearing shaft, the paraffin body is applied axially in the direction of the running thread.

A comparable load device is also in the DE 40 10 469 A1 described. In this known Paraffiniereinrichtung the paraffin body is, however, acted upon by an additional load lever, which in turn is exposed to the spring action of a prestressed bending spring. Again, the paraffin body is kept in constant contact with the current thread.

In these known paraffining facilities also the working position of the Paraffinkörpers, that is, the Paraffinierebene by which the wrapping angle of the yarn and thus more or less the amount of paraffin order can be set, each predetermined by adjustable Wegbegrenzungsmittel.

Such paraffining devices also often have a sensor device for monitoring paraffin body consumption, that is to say via a sensor device which indicates that the paraffin body rotatably mounted about an axis of rotation has reached a minimum size and should be replaced.

In the paraffining device according to DE 40 10 469 A1 For example, the lever-type loading device, which bears against a rotating paraffin body from behind, is equipped with an emitter element in the form of a permanent magnet. Furthermore, a sensor element, for example a Hall sensor, is positioned on a stationary holding device in this known paraffining device. If the emitter element of the loading device is brought further and further to the stationary sensor element due to the consumption of the paraffin body, the Hall sensor detects its due to the approach of the magnetic element Magnetic field. By means of an electronic switching device, a message signal for prompting a paraffin body change is then generated directly or with a time delay, wherein the switching device for processing the message signal is set so that a winding process is stopped directly or only after a remaining time of 10 min to 240 min or that only an optical Display for the operator.

However, such a visual indication of the remaining time has the disadvantage that the operator often still has to manually determine how much remaining time is actually still available at the respective workstation. That is, it is relatively difficult for the operator to determine at which workstation a paraffin body change is particularly urgent before the job is forcibly stopped.

In order to determine the remaining time of a Paraffinierkörpers more accurately, is therefore in the past in the DE 42 26 265 A1 a method has been proposed in which the residual maturity of the paraffin body is determined mathematically. That is, in this known Paraffiniereinrichtung in which the paraffin body is rotatably supported in a suitably designed device along a feed axis transverse to a thread path, the achievement of a minimum size of a constantly decreasing due to a thread contact Paraffinkörpers is characterized in that from the parameters paraffin body weight, Paraffin abrasion, Gamnummer, winding speed, etc. arithmetically the estimated duration of Paraffinkörpers is determined until reaching a minimum size.

To determine the remaining life of the paraffinizing a paraffining device is further in the DE 10 2013 018 877 A1 has already been proposed to equip the waxing device with two detection elements, wherein a first detection element relative to the axis of rotation is fixedly arranged and a second detection element is arranged on the paraffin body or a holder for this, that the second of the detection elements on the one hand rotatable about the rotation axis and on the other hand linear along the axis of rotation is displaced. That is, the two detection elements can be successively overlapped by the linear movement of the paraffin body along the axis of rotation.

However, not only the determination of the exact remaining time is somewhat problematic in the known and in practice per se widespread paraffining, but also the fact that in the known paraffining the paraffin is often presented to the current thread in excess. That is to say, in order to ensure that sufficient yarn paraffinization is achieved under all circumstances, these known paraffining devices often operate at excessive yarn wrap angles and thus excessive paraffin application.

Since the paraffin particles removed by the running, iridescent thread from the paraffin body often do not adhere sufficiently firmly to the thread, such paraffin devices not only produce a high consumption of paraffin but, after a relatively short time, cause soiling of the paraffining devices. In addition, due to gravity, there is often also a heavy level of contamination, in particular of the components of the jobs concerned, which are arranged below the paraffining devices.

In connection with the above-described paraffining devices, it has therefore already been proposed in the past to arrange the rotatable paraffin body within a stationary cover or at least to install below the paraffin body a collecting trough in which the abraded paraffin particles not entrained by the running thread can be collected.

Such with a collecting container for falling paraffin particles equipped paraffining device is for example in the DE 10 2005 028 751 A1 described.

In addition, most of the known paraffining devices not only have the disadvantage of unnecessarily high paraffin consumption, but also a disadvantage of these known paraffining devices is that a change of the paraffinizing conditions is always justified in the case of a change of yarn section in which, due to the newly available yarn material tedious and time-consuming readjustment of Paraffinkörperanschläge is necessary.

That is, in the known paraffining devices, any change in the paraffin application rate always requires a change in the angle of wrap of the yarn on the paraffin body and thus a correction of the position of the Paraffinkörperanschläge.

In the DE 10 2014 012 247 A1 For this reason, a paraffining device for a textile machine producing cross-wound bobbins has already been proposed which has a paraffin body axially displaceably mounted in a bearing housing, the front side of which rests against the running thread of the work station during the winding operation in the region of a so-called paraffin level. In these paraffining devices, a so-called paraffinizing loop is positioned in the region of the front side of a bearing housing of the waxing device so that the running thread is always guided with a fixed base loop.
Furthermore, this paraffining device has a feed device, which allows an adjustable, defined axial displacement of the paraffin body in the direction of the waxing eyelet, as well as two sensor devices.
A first sensor device arranged in the region of a rear connection plate of the bearing housing of the waxing device monitors the rotation angle of the stepping motor, while a second sensor device arranged in the region of the front connection plate detects the respective actual state of the paraffin body.

Based on the aforementioned prior art, the present invention seeks to provide a paraffining device, on the one hand ensures that unwanted paraffin abrasion is largely avoided during the winding operation, but on the other hand ensures that the current thread is always sufficiently paraffinized.

This object is achieved according to the invention by a paraffining device which has a sensor device connected to a work station computer or via a sensor system which monitors whether the front of the paraffin body is positioned in the region of the paraffin level of the paraffining device, and the workstation computer is designed such that if this is not the case, it intervenes to correct the feed rate of the drive.

Advantageous embodiments of the invention are the subject of the dependent claims.

The embodiment according to the invention has the particular advantage that it is always possible to monitor in a relatively simple and reliable manner by using a sensor device connected to the workstation computer or by using a corresponding sensor system connected to the workstation computer, as to whether the front of the paraffin body is always properly attached to the ongoing thread is employed. That is, by the sensor device or the sensor system is continuously detected, whether the front of the Paraffinierkörpers, as required for an optimal Paraffinierauftrag, in the region of the so-called Paraffinierebene the waxing device is positioned and thus rests with a predetermined Arilageruck on the running thread. If it is determined that the front of the paraffin body is not positioned in the area of the waxing plane, the workstation calculator ensures that the feed rate of the paraffin body drive is corrected.
The positioning of the front of the paraffin body in the region of the so-called paraffin level of the waxing not only leads to an optimal waxing of the thread, but also by such positioning of the paraffin body ensures that unnecessary particle abrasion is minimized paraffin body.

In an advantageous embodiment, it is provided that the sensor device comprises a transmitter and a receiver which are arranged on opposite sides of the paraffin body so that the receiver can not receive a initiated by the transmitter control beam when the paraffin body with its front in one in the feed direction the paraffin body is positioned behind the paraffin level of the paraffining device area and that the sensor device then generates a signal.

Such a design ensures that the front of the paraffin body can not be positioned unnoticed in an area beyond the paraffin level, which would lead to a strong contact with the running thread and as a result to an unnecessarily high consumption of Paraffinkörpers. That is, through the As described above, the requirement that is required to be able to operate a paraffining device at any time economically is met.

In an advantageous embodiment, it is provided that the workstation computer is designed such that it engages upon receipt of a signal of the sensor device in the sense of "throttle feed rate of the drive". That is, when it is detected by the sensor device that the front of the paraffin body has been moved to an area beyond the paraffin level, the workstation computer immediately corrects the feed rate of the paraffin body drive and ensures that the front of the paraffin body returns the area of the paraffin level is shifted back.

In a further advantageous embodiment, it is also provided that the workstation computer is designed so that it ensures that the feed rate of the drive is increased when no signal of the sensor device is received more at the workstation computer for a predetermined period of time. That is, after a certain period of time, the workstation computer interprets the absence of a signal from the sensor device in such a way that the front of the paraffin body is positioned in a region lying in front of the paraffin level with respect to the advancing direction of the paraffin body and the running yarn thus makes no contact with the front of the paraffin Has waxing body.

In order to change this very negative state, in which the thread is not paraffinized, the workstation calculator immediately ensures that the feed speed of the drive for the paraffin body is slightly increased, with the result that the front of the waxing body after a certain, relatively short Time period is again positioned in the paraffin level and thus again an optimal Paraffinaufrag on the running thread is guaranteed.

By means of the above-described embodiments of the waxing device, not only can a relatively long life of the paraffin body be ensured in a relatively simple manner, but also it can be ensured that the thread is always properly paraffinized. In addition, these embodiments lead to a very compact design, which is not only easy to install on a paraffining device, but also works very reliable and precise.

A further advantageous embodiment is given when the sensor device or the sensor system, as provided, works according to the light barrier principle.
As is well-known, photoelectric barriers in mechanical engineering have long been proven sensor systems, which are widely used, for example, in connection with monitoring the position of movably mounted components. That is, a photoelectric sensor in optoelectronics is a system that detects the interruption of a light beam and displays it as an electrical signal.
Since photoelectric sensors are not only subject to no wear and correspondingly durable, but are also available at relatively low cost commercially available as mass-produced components, sensor devices or sensor systems which operate according to the photoelectric barrier principle are very advantageous devices.

In an alternative embodiment, a sensor system is used which has a first transmitter and receiver device and a second transmitter and receiver device, which are axially spaced relative to the feed direction of the paraffin body and connected to a workstation computer. That is, the first transmitter and receiver means and the second transmitter and receiver means are axially offset from each other so that, when the front of the paraffin body is positioned in the paraffinierebene of the waxing, a control beam of the first transmitter and receiver device through the paraffin body is shaded and the first transmitter and receiver device correspondingly generates a signal, while at the same time the control beam in the feed direction of the paraffin body (23) in an area just behind the Paraffinierebene the paraffining arranged second transmitter and receiver device is not shadowed and accordingly no signal is generated ,
That is, for the workstation computer, the receipt of a signal from the first transmitter and receiver device and the simultaneous absence of a signal from the second transmitter and receiver device indicate that the paraffin body is operating properly positioned in the paraffin level and no correction of the feed rate of the drive of Paraffinkörpers is necessary.

Receives the workstation computer but in addition to the signal of the first transmitter and receiver device at the same time a signal of the second transmitter and receiver device recognizes the workstation calculator that the front of the paraffin body is positioned in an area beyond the Paraffinierebene the waxing and ensures that the Feed rate of the drive of the paraffin body throttled something and the front of the paraffin body is again positioned in the paraffin level of the waxing device.

In the absence of a signal both the first, and the second transmitter and receiver device, which indicates that neither the control beam of the first transmitter and receiver device nor the control beam of the second transmitter and receiver device is shadowed by the paraffin body, because the front of the Paraffin body is positioned in a region relatively far in front of the paraffin level of the waxing, the workstation computer ensures accordingly that the feed rate of the drive of the paraffin body slightly increased and thus the front of the paraffin body is properly positioned again in the paraffin level.

In a further advantageous embodiment, it is provided that the workstation computer is designed such that the data of the sensor system, which result from the effective feed rate of the controllable drive for the paraffin body, can be detected metrologically by the workstation computer. Preferably, the workstation computer metrologically recorded data resulting from the effective feed rate of the controllable drive, process to the effect that conclusions about the waxing of the paraffining during coil travel are possible.

Such conclusions can be, for example, that a change in the waxing order rate appears advisable.

Such a change in the waxing application rate can be achieved, for example, by a correction of the feed rate of the drive of the paraffin body, wherein the feed rate can be set, for example, at the workstation computer and / or at the central control unit of the textile machine.
Both the setting of the feed rate at the workstation computer, as well as the adjustment of the feed rate to the central control unit of the textile machine offer advantages, the setting of the feed rate to the central control unit of the textile machine is particularly very time-saving because very time-saving, if a plurality of jobs at the same time new feed rate to be set.

However, the conclusions arising from the waxing behavior of the waxing device during the coil travel can also refer to the material of the paraffin body used. For example, it may be advisable to use paraffin bodies in subsequent winding processes which have a somewhat different waxing material.

The invention will be explained in more detail with reference to the embodiments illustrated in the drawings.

Fig. 1

schematisch in Seitenansicht eine Arbeitsstelle einer Kreuzspulen herstellenden Textilmaschine, im Ausführungsbeispiel die Spulstelle eines Kreuzspulautomaten, mit einer Paraffiniereinrichtung, die eine erfindungsgemäß ausgebildete und angeordnete Sensoreinrichtung aufweist,

Fig. 2

in perspektivischer Ansicht und in einem größeren Maßstab eine Paraffiniereinrichtung mit einer ersten Ausführungsform einer erfindungsgemäß ausgebildeten und angeordneten Sensoreinrichtung,

Fig. 3

in Seitenansicht den Frontbereich der in Fig. 2 dargestellten Paraffiniereinrichtung mit der im Bereich der Paraffinierebene angeordneten Sensoreinrichtung,

Fig. 4

in Seitenansicht den Frontbereich einer Paraffiniereinrichtung, mit einem Sensorsystem, das über zwei, in Vorschubrichtung des Paraffinkörpers axial beabstandet angeordnete Sensoreinrichtungen aufweist,

Fig. 5

in perspektivischer Ansicht die in Fig. 2 dargestellte Paraffiniereinrichtung ohne Lagergehäuse sowie teilweise im Schnitt.

It shows:

Fig. 1

schematically in side view of a workstation of a cross-wound producing textile machine, in the exemplary embodiment, the winding unit of a cheese, with a paraffining device, which has an inventively designed and arranged sensor device,

Fig. 2

in a perspective view and on a larger scale a paraffining device with a first embodiment of an inventively designed and arranged sensor device,

Fig. 3

in side view the front area of in Fig. 2 Paraffining device shown with the arranged in the paraffin level sensor device,

Fig. 4

in side view, the front portion of a paraffining device, with a sensor system having two, axially spaced in the feed direction of the paraffin body sensor devices,

Fig. 5

in perspective view the in Fig. 2 Paraffining device shown without bearing housing and partially in section.

In FIG. 1 is a schematic side view of a workstation 2 of a cheese-producing textile machine, in the exemplary embodiment, a so-called winding unit of a cheese winder 1, shown.
Such cross-winding machines 1 are known to have a plurality of such, in series juxtaposed, usually identical jobs 2. As is also known and therefore not explained in more detail, spinning workpieces 3, which are manufactured for example on ring spinning machines and have relatively few yarn volumes, are rewound on these workstations 2 into large-volume cheeses 5 which are required in subsequent work processes, for example on weaving machines. During the rewinding process, the thread 16 withdrawn from the spinning cop 3 is also monitored for possible yarn defects and defects which exceed a predetermined limit are cleaned.
The running thread 16 is also often paraffinized during rewinding.
That is, the running thread 16 is passed over a arranged in the region of the thread running path waxing device 19, which ensures that the coefficient of friction of the thread 16 is reduced and thus the running and sliding properties of the thread 16 are significantly improved.
Corresponding paraffining devices 19 with a sensor device 40 or with a sensor system 50 are described below with reference to FIG Figures 2-5 explained in more detail.

The finished cheeses 5 are, as a rule, by means of a (not shown) automatically operating service unit, on a machine-length cross-coil transport device Passed 7 and transported by means of this to a machine end side arranged Spulenverladestation or the like.

As in Fig. 1 Furthermore, such automatic packages 1 are often also equipped with a cop and tube transport system 6, in which transport plates 11, the spinning cops 3 and the empty tubes circulate.
From such a cop and sleeve transport system 6 are in Fig. 1 only the Kopszuführstrecke 24, the reversibly driven storage section 25, one of the leading to the winding units 2 transverse transport sections 26 and the sleeve return path 27 shown.

The individual jobs 2 also have different working facilities with which a proper operation of such jobs 2 can be guaranteed. Such work equipment has long been known in the art and therefore in the Fig. 1 partly only hinted at.

One of these devices known per se is, for example, the winding device 4, which has a coil frame 8 movably mounted about a pivot axis 12.
According to the present embodiment, the cross-wound bobbin 5 held in the creel 8 is located with its surface on a drive drum 9 during the winding process and is taken over by frictional engagement of this single-motor driven drive drum 9. The drive 33 of the drive drum 9 is connected via a control line 35 to a workstation computer 28.

For traversing the running thread 16 during the winding process, a thread-changing device 10 is also provided. The only schematically indicated in the present embodiment Fadenchangiereinrichtung 10 has, for example, a yarn guide 13 with a finger-like thread laying lever.

During the winding process, this thread-laying lever, which can be acted upon by an electromechanical drive 14, traverses the running thread 16 between them both ends of the cheese 5. The drive 14 of the yarn guide 13 is also connected via a control line 15 to the workstation computer 28.

The Fadenchangiereinrichtung 10 may of course also have another embodiment. The Fadenchangierung could for example also be done by a thread guide drum or by a guided in a Kehrgewindewalze traverse guide.

As already indicated above, the workstations 2 such automatic packages 1 in the area of the yarn path immediately before the Fadenchangiereinrichtung 10 often on a paraffin device 19, which makes it possible to provide the thread 16 during the Umspulprozesses with a paraffin order.

Like in the Fig.1 indicated and specifically in the Figures 2 and 5 shown more clearly, also has the paraffining device 19 via a drive 34 which is connected via a control line 37 to the workstation computer 28, which in turn is connected via a machine bus 17 with the central control unit 44 of the automatic cheese 1.

The Figures 2 and 5 show in perspective view and on a larger scale in each case a first embodiment of a paraffining device 19 with an inventively designed and arranged sensor device 40th

As in Fig.2 1, the paraffining device 19, which is fixed, for example, via a holder (not shown) on the spinning station housing of the workstation 2, has a bearing housing 30 with a rear connection plate 18 and a front connection plate 29. At the rear connection plate 18 is, for example by means of bolts 45, a, preferably designed as a stepper motor drive 34 attached, which is connected via a control line 37 to the workstation computer 28 and / or the central control unit 44 of the automatic package 1.

As in particular from Fig. 5 can be seen, to the motor shaft of this stepping motor 34, a threaded spindle 20 is connected, for example via a threaded element 21st is connected to a feed carriage 22, in which a peg-shaped in the embodiment paraffin body 23 is mounted.

The feed carriage 22 is, for example, axially displaceable within the bearing housing 30 by means of a guide device 39 shown in section. That is, the feed carriage 22 can be displaced by means of the stepping motor 34 by rotating the threaded spindle 20, for example in the direction of rotation D axially in the feed direction R, that is, in the direction of a so-called Paraffinierebene PE.

Like from the Figures 2 and 5 can be seen, the front connection plate 29 is bent in its lower region by preferably 90 ° to the front and has a central thread guide means 38 in the central region, in which the running thread 16 is guided during the winding process.

In the area of the front connection plate 29 of the bearing housing 30, a bearing plate 31 is also installed, which is equipped with an overhead thread sliding element 32 and lateral thread limiting means 36.

In addition, in the region of the front connection plate 29, a sensor device 40 is arranged, which is connected, for example, to the workstation computer 28 of the relevant workstation 2.

The sensor device 40 has, as in the Figures 2 . 3 and 5 represented by a transmitter 41 and a receiver 42 arranged so that a control beam 43 emitted by the transmitter 41 extends in a region just behind a so-called waxing plane PE of the waxing device 19 and during the winding process with a proper positioning of the front side 46 of the Paraffin body 23 is not shaded in the paraffin level PE.

That is, when the front face 46 of the paraffin body 23 is properly positioned in the region of the paraffin level PE, in which the front face 46 of the paraffin body 23 abuts the running thread 16 with a predefinable contact pressure, the sensor device 40 generates no signal i.

If, however, the waxing body 23 is displaced beyond the area of the waxing plane PE with its front face 46, the control beam 43 of the sensor device 40 acting on the light barrier principle is covered by the waxing body 23, with the result that the sensor device 40 generates a signal i , The signal i is then processed by the workstation computer 28, the workstation computer 28 ensures that the feed rate of the stepping motor 34, which was obviously a bit too big, is somewhat reduced.

• Wenn durch die Sensoreinrichtung 40 über eine gewisse, vorgebbare Zeitspanne lang kein Signal i mehr generiert wurde, was in der Regel daran liegt, dass aufgrund einer etwas zu geringen Vorschubgeschwindigkeit des Schrittmotors 34 die Vorderfront 46 des Paraffinkörpers 23 in Vorschubrichtung R mehr oder weniger deutlich vor der Paraffinierebene PE der Paraffiniereinrichtung 19, also beabstandet zum laufenden Faden16 positioniert ist, sorgt der Arbeitsstellenrechner 28 dafür, dass die Vorschubgeschwindigkeit des Schrittmotors 34 sofort wieder etwas erhöht und damit die Vorderfront 46 des Paraffinkörpers 23 wieder vorschriftsmäßig im Bereich der Paraffinierebene PE positioniert wird.

In order to reliably prevent the front face 46 of the paraffin body 23 from being positioned unnoticed apart from the running thread 16 during the spooling process and thus from paraffinizing the running thread 16, the workstation computer 28 also acts as follows:

• If no signal i was generated by the sensor device 40 for a certain, predefinable period of time, which is usually due to the fact that due to a slightly too low feed rate of the stepping motor 34, the front 46 of the paraffin body 23 in the feed direction R more or less clearly before the paraffin level PE of the paraffining device 19, so spaced from the current Faden16 is positioned, the workstation computer 28 ensures that the feed rate of the stepping motor 34 immediately increased slightly again and thus the front of the paraffin body 23 is again properly positioned in the paraffin level PE.

In Fig. 4 an alternative embodiment of a paraffining device 19 according to the invention is shown. That is, in this embodiment, instead of a sensor device 40, a sensor system 50 is installed, which is connected to the workstation computer 28 of the relevant workstation 2.
The sensor system 50 has in the front region of the paraffining device 19 via a first transmitter and receiver device 51 A, 52 A and an axially spaced second transmitter and receiver device 51 B, 52 B, which are each connected to the workstation computer 28.
The transmitter 51A and the receiver 52A are arranged in the feed direction R of the paraffin body 23 in front of the paraffin level PE of the paraffining device 19, while the transmitter 51 B and the receiver 52B are arranged in the feed direction R of the paraffin body 23 behind the paraffin level PE.

Such an arrangement has, in conjunction with appropriate software of the workstation computer 28, during the winding operation, with proper positioning of the paraffin body 23, in which the front 46 of the paraffin body 23rd in the area of the paraffin level PE and thereby bears against the running thread 16 with a slight contact pressure, the receiver 52A arranged in front of the paraffin level PE is covered by the paraffin body 23, so that a control beam 53A initiated by the transmitter 51A can not be detected by the receiver 52A, which then generates a signal i, which goes to the workstation computer 28.
At the same time, the receiver 52B arranged in the feed direction R of the paraffin body 23 behind the waxing plane PE detects the control beam 53B of the transmitter 51B, with the result that no signal i is generated.
Such a signal input is interpreted by the workstation computer 28 in such a way that the front face 46 of the paraffin body 23 is properly positioned in the region of the paraffin level PE of the paraffining device 19 and consequently no correction of the feed rate of the drive 34 of the paraffin body 23 is necessary at the time.

However, if in the course of the winding operation an improper displacement of the paraffin body 23 takes place, that is, if, for example, the front face 46 of the paraffin body 23 is displaced beyond the paraffin level PE in the feed direction R, the paraffin body 23 also shadows the transmitter body. and receiver device 51 B, 52B, with the result that also the transmitter and receiver device 51 B, 52B generates a signal i.
A signal i of the receiver device 51 B, 52 B is then correctly interpreted by the workstation computer 28 to the effect that the feed rate of the drive 34 of the paraffin body 23 is slightly too large. The workstation computer 28 accordingly ensures that the feed rate of the drive 34 of the paraffin body 28 is somewhat reduced.

However, if the workstation computer no longer receives a signal i during the winding operation because neither the first transmitter and receiver device 51A, 52A nor the axially spaced second transmitter and receiver device 51B, 52B are shadowed by the paraffin body 23, the workstation computer 28 will indicate this to the effect that the feed rate of the drive 34 of the paraffin body 23 is too low.

The workstation computer 28 ensures in this case that immediately increases the feed rate of the drive 34 of the paraffin body 28 slightly and as a result, the front panel 46 of the paraffin body 23 is positioned again in the paraffin level PE.
The use of a sensor system 50 in conjunction with a suitably designed workstation computer 28 also enables a metrological recording of the data resulting from the effective feed rate.
From these data, conclusions about the waxing behavior of the waxing device during the bobbin travel are easily possible, which can be used, for example, for a more optimal adjustment of the feed rate of the drive 34 of the paraffin body 23.

Claims (9)

Paraffining device (19) for a cross-wound textile machine (1), with a parachute body (23) axially displaceably mounted in a bearing housing (30) which during the winding process by means of a defined controllable drive (34) in the region of a Paraffinierebene (PE) of the waxing device (19) is positionable, in which the front face (46) of the paraffin body (23) on a running thread (16) is present,
characterized,
in that the paraffining device (19) has a sensor device (40) connected to a work station computer (28) or a sensor system (50) which monitors whether the front face (46) of the paraffin body (23) is located in the region of the waxing plane ( PE) of the paraffining device (19) is positioned, and the workstation computer (28) is designed so that it, if this is not the case, corrective intervention in the feed rate of the drive (34). Paraffining device (19) according to claim 1, characterized in that the sensor device (40) has a transmitter (41) and a receiver (42) which are arranged on opposite sides of the paraffin body (23) so that the receiver (42) a control beam (43) initiated by the transmitter (41) can not be received when the paraffin body (23) with its front face (46) in an advancing direction (R) of the paraffin body (23) behind the waxing plane (PE) of the waxing device (19) is positioned and that the sensor device (40) then generates a signal (i). Paraffining device (19) according to claim 1, characterized in that the workstation computer (28) is designed such that it ensures that upon receipt of a signal (i) of the sensor device (40) in the sense "feed rate of the drive (34) throttle" is intervened. Paraffining device (19) according to claim 3, characterized in that the workstation computer (28) is also designed so that it ensures that the feed rate of the drive (34) is increased when a predetermined period of time no signal (i) of the sensor device (40) at the workstation computer (28) has received more. Paraffining device (19) according to claim 1, characterized in that the sensor device (40) or the sensor system (50) operates on the principle of the light barrier. A waxing device (19) according to claim 1, characterized in that the sensor system (50) comprises a first transmitter and receiver device (51A, 52A) and a second transmitter and receiver device (51B, 52B), which with respect to the feed direction (R) the Paraffinkörpers (23) axially spaced from each other and are connected to a workstation computer (28). Paraffining device (19) according to Claim 6, characterized in that the first transmitter and receiver device (51A, 52A) and the second transmitter and receiver device (51B, 52B) are arranged axially offset in the feed direction (R) of the paraffin body (23) when the front face (46) of the paraffin body (23) is positioned in the region of the waxing plane (PE) of the waxing device (19), a control beam (53A) of the first transmitter and receiver device (51A, 52A) is shaded by the paraffin body (23) is such that the first transmitter and receiver device (51A, 52A) generates a signal (i), while at the same time the control beam (53B) in the feed direction (R) of the paraffin body (23) just behind the paraffin level (PE) of the waxing device ( 19) arranged second transmitter and receiver device (51 B, 52 B) is not shadowed and correspondingly no signal (i) generated. Paraffining device (19) according to claim 7, characterized in that the workstation computer (28) is designed so that the data of the sensor system (50) resulting from the effective feed rate of the controllable drive (34) for the paraffin body (23), by the workstation computer (28) are metrologically detectable. Paraffining device (19) according to claim 8, characterized in that the workstation computer (28) is designed so that metrologically recorded data resulting from the effective feed rate of the controllable drive (34) are processed to the effect that conclusions on the Paraffinierverhalten the waxing device (19) during the spool trip are possible.

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