EP2915767A1 - Workstation of a textile machine with a paraffinization device - Google Patents

Abstract

The present invention relates to a work station (12) of a textile machine with a waxing device (20) for a thread (2), wherein the waxing device (20) comprises a receiving mandrel (21) for a paraffin body (22) and the thread (2) for its Paraffining above or below the paraffin body (22) and the side of the mandrel (21) is guided, and the work (12), seen in the running direction of the thread (2) via an upstream thread guide element (5, 25) immediately before and via a Fadenchangiereinrichtung (6) has the waxing device (20), characterized, in that, with respect to the center plane of the thread pivoting effected by the thread-changing device (6), the receiving mandrel (21) is displaced laterally in the same direction as the thread (2) towards the receiving mandrel (21), or that, based on the center plane of the Fadenchangierung caused by the Fadenchangiereinrichtung (6), the upstream thread guide element (5, 25) laterally in the opposite direction as the thread (2) to the mandrel (21) is offset.

Description

The invention relates to a workstation of a textile machine with a waxing device and a textile machine with such a job.

Waxing machines are used in yarn making and finishing to apply paraffin to the yarn for smoothing and lubrication. On the one hand, this means that the yarn can pass through subsequent processes with less friction and therefore less heat development. On the other hand, it can also be a more uniform appearance of the textile end products such. promote a more elegant surface structure in knitwear.

Here, the term paraffin is intended to mean any form of suitable lubricant, e.g. waxes and blends of paraffins and waxes, and yarn or the yarn of a yarn should serve as a generic term for both natural and synthetic textile materials, e.g. Both cotton and polyester include. Examples of textile machines on which waxing equipment can be used are spinning, winding and twisting machines in yarn production, as well as knitting and weaving machines in yarn processing.

Paraffinification devices can be realized in various ways. The present invention relates to an embodiment of a waxing device which has a receiving mandrel which serves to receive a solid paraffin body. For this purpose, the generally cylindrical paraffin body in its cylinder axis has a cavity with which the paraffin body can then be pushed onto the mandrel. The thread is then led to the waxing laterally from the mandrel either above or below the paraffin body with contact to the upper or lower face. For better thread guidance in the area of the paraffin body, it is customary in particular when guiding over the lower end face that the waxing device still has a support plate from which protrudes the receiving mandrel and rests on the paraffin body, so that the thread passes between the support plate and paraffin body , But even with thread guide on the paraffin body of the thread in its lateral movement is always through the mandrel limited, which extends on the thread-facing side of the paraffin body to this always a piece on the paraffin body.

In the course of waxing, the passing thread absorbs paraffin from the paraffin body and gradually consumes the paraffin body, which then has to be replaced from time to time. It is desirable that the thread as far as possible removes the end face of the Paraffinkörpers over which it is guided, so that on the one hand the thread is parched as evenly as possible and on the other hand, the paraffin body can be used up as completely as possible. To facilitate this, the paraffin body is set in rotation. This can happen on the one hand that the paraffin body can rotate freely around the mandrel or the mandrel or the mandrel is freely rotatably mounted together with the support plate, whereby the continuous thread then set by its friction on the paraffin body in rotation. One speaks of thread-driven rotation. On the other hand, however, the paraffin body may also be connected to the mandrel with respect to rotation, e.g. by the mandrel as a square and the cavity in the paraffin body are formed as a square hole, and the mandrel or the mandrel together with the support plate can be driven single motor or even through the entire textile machine running belt. One speaks of externally driven rotation. The invention relates to both variants.

In the workplace, the waxing device is arranged between two thread guide elements which, together with the lateral guidance of the thread on the receiving mandrel, determine the thread guide in the area of the paraffin body. In practice, two variants are used for this thread guide.

On the one hand, the thread can be guided by stationary guides in front of and behind the waxing device in a fixed path over the end face of the paraffin body. This is for example from the GB969774A (S. Fig. 1 and 4 ), where the thread passes from a stationary tensioner ("tension unit 18") in a straight path on the side of the motorized mandrel ("stud 70") and between the support plate ("platform 82") and paraffin body ("wax 86") to the fixed Noppenfänger ("slub catcher 20") is performed. In such fixed guide ways, it is important that the thread is passed directly to the mandrel, otherwise the central portion of the Paraffinkörpers not come into contact with the thread and thus the paraffin there would not be removed and the paraffin body would not be consumed evenly.

Such solid guide paths naturally arise in textile machines in which the thread in the region of the waxing device anyway has a fixed path, such as when used on a knitting machine or loom. However, they can also be used on textile machines, in which the thread also iridescent, ie oscillating between two extreme positions, makes movements. This is what the already mentioned GB969774A the discussed combination of waxing between thread tensioner and Noppenfänger before the winding device of the winding unit of a winder.

However, it is also possible to allow an iridescent movement of the thread in the area of the paraffin body. An example of such an arrangement shows the DE2316452A (S. Fig. 1 and 2 ), in which the thread ("thread 2") from a stationary thread supply device ("leading role 1") laterally on the motor-driven mandrel ("square 6") and thereby between support plate ("support plate 5") and paraffin body ("paraffin body 4") through to a movable Fadenchangiereinrichtung ("traversing yarn guide 13") is performed. This arrangement is part of the winding unit of a twisting or winding machine, which ultimately wound the thread on a take-up reel ("take-up reel 3") iridescent. Oscillating with respect to fixed yarn guide paths in the paraffin body have the advantage of a more uniform consumption of the paraffin body, since the traversing movement promotes the uniform paraffin removal on the thread-facing end of the paraffin body.

Thread-passing devices can be realized in various ways. The most common in the art are the traversing with the help of a traversing yarn guide, as he also in the just discussed DE2316452A is used, or even the traversing with the aid of a grooved drum, as it is then used for example in winding machines as a friction roller for driving a take-up reel.

Ideally, the yarn is passed through the paraffinizing device both at a constant speed and at a constant yarn tension, so that waxing and removal of the paraffin body take place as evenly as possible. In practice However, this can only be achieved approximately. Thus, the thread in the workplace usually passes through both before and after the waxing several more elements that affect the path, speed or tension of the thread. For example, there are thread guide elements such as thread deflections, thread brakes and thread accelerations such as advance rolls in twisting machines. In addition, the unevenness of the thread itself. The whole thing is then considerably aggravated if the job example of a winder has a Fadenchangierung, as is typical for example to wind the thread on a take-up reel, which then worsens conical take-up by the varying yarn speed again becomes. For waxing, fluctuations in the speed and tension of the thread initially mean an increase in the unevenness of the paraffin application on the thread and the removal of the paraffin body.

Further problems also occurring at ideal speed and tension of the thread are caused by the fact that the rotation of the paraffin body on the thread in the region of the paraffin body exerts a centrifugal force which drives the thread away from the receiving mandrel of the waxing device. This movement of the thread towards the outer edge of the paraffin body is further intensified in the phase of a traversing movement in which the traverse accelerates the thread away from the receiving mandrel. Because then the thread, especially at lower yarn tensions due to its inertia continue its movement away from the mandrel even beyond a straight course out. That is, due to the inertia of the yarn in such situations will not be straight from the previous yarn guide element to Fadenchangiereinrichtung, but will deviate from this course in the direction away from the mandrel.

As a result, the thread may at least temporarily lose contact with the mandrel of the waxing device. However, such a loss of contact can already by the Fadenchangierbewegung itself, ie even without taking into account the inertia of the thread happen when the traversing the thread in one of their extreme positions so far aside, that the thread would lose even this contact even in a straight line ,

The loss of contact between the filament and the mandrel may, on the one hand, result in less removal of the paraffin body in its middle region, as a result of which the paraffin body becomes crowned over time. If the thread no longer touches the mandrel, this leads to thread guide between support plate and paraffin body to the fact that the waxing comes to a complete standstill because the paraffin body is supported with its central region on the support plate and the thread its outer area because of there now completed ablation of the face no longer touched. However, even with continued paraffinization, the loss of contact between the filament and mandrel typically results in at least uneven wax paraffinization and consequent higher variation in yarn tenacity.

On the other hand, however, the loss of contact between the thread and the mandrel during a traversing movement can also cause a considerable variation in the thread tension, since the traversing movement then abruptly alters its pivot point, which is then deflected by the receiving mandrel, e.g. to which the waxing device immediately upstream thread guide element changes. Thread tension fluctuations now also typically lead to problems in the threading path following the paraffining device. Thus, the winding of a subsequent take-up reel becomes uneven in its winding hardness, which can be problematic especially on the coil edges, but also can generally cause problems in the further processing of such coils. Thus, the yarn tension variations in the wound yarn are typically maintained and lead to different relaxation phenomena during unwinding for further processing, that is to say in particular to different extensibility and elasticity. This can be especially true for very fine and delicate yarns such as e.g. fine merino wool ply.

In extreme cases, and in particular in the case of the very low yarn tension required for fine yarns, it may even happen that the yarn moves away from the mandrel so far that it completely leaves the waxing device. In any case, this leads to a further considerable fluctuation of the thread tension at the moment of the loss of the thread contact to the end face of the paraffin body with the above-mentioned disadvantages. In the worst case, however, the thread will not find its way back into the subsequent operation of the job Paraffinification and there is no more waxing instead. This error can then be remedied only by the operator of the textile machine.

It is therefore an object of the present invention to provide a workstation of a textile machine with a waxing device, which at least reduces the problems described and in particular prevents in many cases that the thread leaves the waxing device, and also reduces the thread tension fluctuations.

The object is achieved by a workstation of a textile machine with a waxing device for a thread, wherein the waxing device comprises a mandrel for a paraffin body and the thread is led to its paraffinization above or below the paraffin body and the side of the mandrel, and the job, in the running direction of the Thread seen, has an upstream thread guide element immediately before and via a Fadenchangiereinrichtung after the waxing device,
characterized,
in that, with respect to the center plane of the thread switching effected by the thread-changing device, the receiving pin is displaced laterally in the same direction as the thread to the receiving pin,
or that, based on the center plane of the Fadenchangierung caused by the Fadenchangiereinrichtung, the upstream thread guide element is laterally offset in the opposite direction as the thread to the mandrel.

Thus, while the prior art arranges both the mandrel of the waxing device and the upstream thread guide element both in the center plane of the Fadenchangierung caused by the Fadenchangiereinrichtung, the invention offset at least one of these components to the side, that thereby the yarn is guided closer to the mandrel. This counteracts both the critical Fadenauslenkungen in the Fadenchangierung and the centrifugal forces by the rotation of the paraffin body.

For the minimization of the thread tension fluctuations during traversing, a symmetrical oscillation is preferable. For this it is favorable, the mandrel of To install waxing as possible in the center plane, as too strong lateral displacement of the mandrel strongly distorted the traversing triangle. In this respect, the lateral displacement of the upstream thread guide element is a preferred solution. However, a moderate displacement of the mandrel, in particular in combination with a corresponding displacement of the upstream thread guide element may also be favorable, depending on the structural conditions of the job.

The extent of the lateral displacement of the mandrel or the upstream thread guide element, individually or in combination, once depends on the geometric relationships of the other components in the workplace. Here, in particular, the projected on the center plane distances from the upstream thread guide element, arbor and Fadenchangiereinrichtung are of importance. But also the so-called traverse stroke, ie the extent of the traversing motion perpendicular to the center plane, plays a decisive role. Thus, the necessary lateral offset increases e.g. at with increasing traverse stroke, with increasing projected to the center plane distance of the mandrel from the upstream thread guide element and with decreasing projected to the center plane distance of the mandrel of the Fadenchangiereinrichtung. By contrast, a larger selected diameter of the i.d.R. cylindrical Paraffinkörpers the size of the necessary lateral offset.

In addition to the design details of the workplace, however, the properties of the yarns to be processed at the workplace also play a role. For example, fine yarns with their low thread tensions during processing require a particularly high offset. If larger yarn tension fluctuations are to be expected or high rotational speeds of the paraffin body, be it the thread drive due to high yarn speeds or the foreign drive due to high drive speeds, generate large centrifugal forces, then this should be counteracted by an increase in the lateral offset.

The absolute size of the offset will therefore be selected by the person skilled in the art in accordance with these requirements and if necessary determined by a series of experiments. It is advantageous to make sure to choose the lateral displacements of the mandrel or the upstream thread guide element individually or in combination so strong that the Thread during Fadenchangierung and occurring in operation of the job thread tension fluctuations does not leave the waxing device. For such sliding out of the thread from the waxing device, as detailed above, is one of the most serious problems of the prior art.

In order to convert a job to other and in particular stricter requirements, e.g. to allow the processing of finer yarns, the invention provides in a further development, a variable attachment of mandrel or upstream thread guide element. Thus, these components can be used e.g. be mounted laterally displaceable on a rail by means of a rider, or one provides different length holder for these components before, which are then attached to the same construction point of the job and determine the size of the lateral offset by their different length.

As explained above, it is advantageous at least for a uniform wear of the paraffin body, if the thread also removes the central region of the paraffin body evenly. This can be achieved in that the lateral displacements of the mandrel or the upstream thread guide element individually or in combination are so strong that the thread does not lose its contact with the mandrel during Fadenchangierung and occurring during operation of the job thread tension fluctuations. Because then it is ensured that the thread always slides along the entire diameter of the Paraffinkörpers, so the middle area as well as the outer area of the Paraffinkörpers removes.

In order to facilitate the determination of the required lateral offset in an individual case, the invention proposes in a development to consider the position of a connecting line between the contact point of the thread with the upstream thread guide element and the contact point of the thread with the Fadenchangiereinrichtung. Neglecting the centrifugal force caused by the rotation of the Paraffinkörpers and caused by the traversing motion due to the inertia of the thread deflections namely the yarn would initially move straight on this connecting line, if the thread is so far to the side of the mandrel that this does not lead to a thread deflection , Especially in extreme situations the Fadenchangiereinrichtung in which the thread threatens most of the risk of sliding out of the waxing device, where he is thus potentially furthest away from the mandrel, this connecting line is an important auxiliary construction.

For if in this extreme position, the connecting line on the same side of the mandrel as the thread is, the thread would follow straight line just this connection line. However, since in practice, as already discussed, the centrifugal force and the acceleration due to the traversing are becoming more pronounced, in this situation the thread will actually move even further away from the mandrel than the connecting line does.

Therefore, the invention proposes in this development, that the line connecting the contact point of the thread with the upstream thread guide element and the contact point of the thread with the Fadenchangiereinrichtung during the entire caused by the Fadenchangiereinrichtung Fadenchangierung either the receiving mandrel cuts or at least tangent or on the side of the mandrel runs, which is opposite to that on which the thread is guided along the mandrel. In this development, therefore, the discussed connection line in the mentioned extreme position of the thread-switching device should at least still rest tangentially on the receiving mandrel. With idealized threadline, i. neglecting the centrifugal force caused by the rotation of the Paraffinkörpers and caused by the traversing motion due to the inertia of the thread deflections, the thread would thus lie just tangential to the mandrel in the most critical position of Fadenchangiereinrichtung, while in all other positions even a deflection to would learn the mandrel.

However, since due to the centrifugal force and the acceleration by the traversing of the thread even with such a choice of the connecting line temporarily lose contact with the mandrel and thereby, as described above, the uniformity of the waxing and the removal of Paraffinkörpers is impaired, the invention proposes a further advantageous development, the lateral offset still to reinforce. Here again, the invention proposes to orientate itself on an idealized linear threadline.

So if the lateral displacements of the mandrel or the upstream thread guide element individually or in combination are chosen so strong that the connecting line moves in the region of the mandrel and finally on its other side, so the thread would be deflected at a straight line of yarn, the mandrel. M.a.W., as an auxiliary construction, the following two connecting lines are now to be considered: 1) the thread guide element upstream of the connecting line to the receiving mandrel, and 2) the connecting line of the receiving mandrel to the thread switching device, i. more precisely, this means the connecting lines of the corresponding contact points of the thread with these components.

Thus, if the above-mentioned first connection line from the upstream thread guide element for Fadenchangiereinrichtung the receiving mandrel just tangential touch, close the two just introduced connecting lines an angle of 180%, so are collinear. If you increase the lateral offset, this angle increases. Specifically, the invention proposes in the training just discussed to choose the angle of these two newly introduced connecting lines to at least 190%.

As an upstream thread guide element, an additional component can be introduced into the workplace, in particular, the training appears as a deflection roller particularly advantageous because it causes only a low friction and thus heat generation, energy loss and deterioration of the thread quality. However, any other components which are suitable for a thread guide, such as e.g. a pen, an eyelet, a piggyback or a guide fork.

If the structural conditions of the work permit, but may also be dispensed with such an additional component and instead the already existing in existing jobs and the paraffining device upstream thread guide element can be used. Normally, this is a yarn feeding device, which is usually designed as a leading role, but can also be run as godet or as a thread brake.

If the structural conditions of the job do not allow to realize a sufficient lateral offset of the mandrel or the upstream thread guide element, or even as a further measure to increase the design margin, the invention proposes in another development before, in the workplace downstream of the waxing and located before the Fadenchangiereinrichtung thread guide element, which limits the caused by the Fadenchangiereinrichtung lateral movement of the thread in the direction of the side on which the thread is guided past the mandrel, limited.

Such a downstream thread guide element thus limits the lateral movement of the thread to the critical side by limiting the Fadenauslenkungen behind the waxing device. Together with a suitable thread guide in front of the waxing device, this then leads to the thread remaining close enough to the pick-up mandrel in the area of the paraffin body not to leave the waxing device and, ideally, not to lose contact with the pick-up mandrel. This measure is particularly suitable for large traversing strokes, which would otherwise lead to large thread deflections in the area of the paraffin body, which can be kept under control by an inventive downstream thread guide element.

In order to limit the thread movement in the direction of the side on which the thread is guided past the receiving mandrel, e.g. Only on this side behind the waxing a thread guide element are attached. This would then, for example, similar to the upstream thread guide element, a pulley because of the low friction threadline particularly favorable. In question would be synonymous but a pen.

To determine the lateral offset of the downstream thread guide element, the invention proposes in a development, in turn, to orient analogous to the determination of the lateral offset of the upstream thread guide element or the mandrel, on an idealized linear threadline, as he neglected by the Rotation of the paraffin body caused centrifugal force and would set by the traversing movement caused by the inertia of the thread deflections. Such an idealized straightforward Thread course would now so determined by the contact points of the thread with the upstream and downstream thread guide element, the lateral passage of the thread on the mandrel there would cause depending on the position of the downstream thread guide element and the Fadenchangiereinrichtung a deflection of the thread on the mandrel.

In an advantageous embodiment, the invention proposes that the connection line just described between the contact point of the thread with the upstream thread guide element and the contact point of the thread with the downstream thread guide element during the entire caused by the Fadenchangiereinrichtung Fadenchangierung either the receiving mandrel cuts or at least tangent or on the Run side of the mandrel, which is opposite to that on which the thread is guided along the mandrel. This means, if one considers the discussed idealized linear threadline, that this in the most critical phase of the traversing by the relative lateral arrangement of upstream thread guide element, mandrel and downstream thread guide element just tangential touches the mandrel and runs straight from the upstream to the downstream thread guide element. This purely tangential contact with straight running from the upstream to downstream thread guide element stops during the entire part of the traversing movement, in which the idealized linear yarn path is limited by the downstream thread guide element on the critical side. During the remaining part of the traversing movement of the thread through the Fadenchangiereinrichtung is further led to the other side, so that the idealized threadline loses contact with the downstream thread guide element, but now deflected by his leadership laterally on the mandrel passing through the mandrel to this other side towards the mandrel becomes.

While now such a one-sided limitation of the yarn path is sufficient to prevent the yarn from leaving the waxing and even with sufficient lateral offset of upstream thread guide element, mandrel and nachgelagertem thread guide even the contact between thread and mandrel during the entire traversing movement, performs a one-sided threadline limitation behind the waxing but after an asymmetrical Traversing movement in the area of the paraffin body. For in the area of the paraffin body, the one-sided boundary shortens the traverse stroke to this side, while leaving it unaffected to the other side.

Therefore, in a further development, the invention proposes to make the downstream thread guide element symmetrical with respect to the traversing, that is to limit the yarn path on both sides of the center plane behind the waxing device in the same way. For this purpose, on the one hand, the same component that was used for the one-sided limitation, that is, e.g. another deflection roller or a pin, again mirror-inverted on the other side are attached. Alternatively, however, it is also possible to use thread guide elements which are symmetrically constructed from the outset, e.g. a Langöse or a guide fork corresponding fork width.

However, the principle proposed by the invention to limit the yarn path behind the waxing device to the critical side, but also includes the ability to completely define the yarn path through the downstream thread guide element there, ie. for the downstream thread guide element to use an eyelet, a nonsense tail or a correspondingly narrow guide fork. Of course, this solution has the disadvantage that in the area of the paraffin body no more threading takes place, which can affect the uniformity of the waxing of the thread and the removal of the paraffin body. However, there may be situations in which such a solution is cheaper and the disadvantages are acceptable or can be avoided by other measures such as an adjustment of the external drive of the paraffin body. The invention also claims this embodiment of the downstream thread guide element.

All of the above-described embodiments of a job belong to the present invention.

In the following the invention with reference to an embodiment shown in the drawings and some of its variants will be explained in more detail.

Fig. 1

in Seitenansicht und schematisch eine Ansicht einer Arbeitsstelle einer Doppeldraht-Zwirnmaschine des Standes der Technik, die durch Aufnahme einer entsprechenden Paraffinierungseinrichtung zu einer erfindungsgemäßen Arbeitsstelle ausgebaut werden kann;

Fig. 2

in perspektivischer Darstellung eine Paraffinierungseinrichtung des Standes der Technik, die zwischen der Aufwickelspule und der Voreilrolle einer in Fig. 1 dargestellten Arbeitsstelle einer Zwirnmaschine angebracht werden kann;

Fig. 3

in schematischer Darstellung einen Vertikalschnitt der Anordnung gemäß Fig.2;

Fig. 4

in perspektivischer Darstellung eine Teilansicht einer ersten Ausführungsform einer erfindungsgemäßen Arbeitsstelle mit einer seitlichen Umlenkrolle;

Fig. 5

in Vorderansicht eine maßstabsgerechte Zeichnung einer bevorzugten Ausführungsform der Teilansicht nach Fig. 4;

Fig. 6a

und 6b schematisch in Vorderansicht weitere Ausführungsformen der Teilansicht nach Fig. 4;

Fig. 7a und 7b

schematisch in Vorderansicht Ausführungsformen der Teilansicht nach Fig. 4 mit einem nachgelagerten Fadenführungselement;

wobei dieselben Bauteile in allen Figuren mit denselben Bezugszeichen bezeichnet sind.Show it

Fig. 1

in side view and schematically a view of a job of a double-twisting machine of the prior art, by receiving a corresponding Paraffinierungseinrichtung can be expanded to a workplace according to the invention;

Fig. 2

a perspective view of a waxing device of the prior art, between the take-up reel and the leading role of a in Fig. 1 shown job of a twisting machine can be attached;

Fig. 3

in a schematic representation of a vertical section of the arrangement according to Fig.2 ;

Fig. 4

a perspective view of a partial view of a first embodiment of a work according to the invention with a lateral deflection roller;

Fig. 5

in front view of a scale drawing of a preferred embodiment of the partial view according to Fig. 4 ;

Fig. 6a

and FIG. 6b shows a schematic front view of further embodiments of the partial view according to FIG Fig. 4 ;

Fig. 7a and 7b

schematically in front view embodiments of the partial view according to Fig. 4 with a downstream thread guide element;

wherein the same components in all figures are denoted by the same reference numerals.

In the from the DE102006061290A1 withdrawn FIG. 1 is shown schematically in side view a view of a workstation 12 of a double-twisting machine of the prior art, which can be expanded by receiving a corresponding waxing to a job according to the invention. More precisely, two work units constructed in mirror image to one another are to be seen, which form one of several juxtaposed workstations in the two-for-one twisting machine back to back. The term job 12 describes below one of these working units.

In the workstation 12 of a spindle 1, a thread 2, monitored by a thread stop lever 3, via a belt pulley 4 to a leading roller 5. At the overfeed roller 5, the thread tension is lowered to a bearable for winding measure. The thread 2 now runs in a traversing yarn guide 6, the thread 2 transversely to a aufzuspulenden take-up reel 7, here specifically a cross-wound bobbin 7, laid. The drive of the cheese 7 is effected via a friction roller 9 by frictional engagement. The lead rollers 5 and the friction rollers 9 of the work stations 12 are hereby arranged on a separate machine-length drive shaft 8, 10.

• Der Faden 2 passiert auf seinem Weg von der Voreilrolle 5 zur schematisch dargestellten Aufwickelspule 7 eine Paraffinierungseinrichtung 20, die im Wesentlichen aus dem Paraffinkörper 22 und einer stationären Stützplatte 23 besteht, die hier die Funktion eines Aufnahmetellers übernimmt. Der Paraffinkörper 22 ist auf einen durch die Stützplatte 23 hindurchgeführten und hier als Vierkant ausgebildeten Aufnahmedorn 21 einer Antriebswelle 21 a aufgesteckt, die von einem Motor 21 b angetrieben wird. Der Motor 21 b ist mittels des Tragbleches 21 c an dem Maschinenlängsträger 21 d befestigt. Die Stützplatte 23 ist an einem weiteren Maschinenlängsträger 23a befestigt, der außerdem noch Abschirmbleche 23b trägt. Der Aufwickelspule 7 ist die als Changierfadenführer ausgestaltete Fadenchangiereinrichtung 6 vorgeschaltet.

In the from the DE2316452A (there Fig. 1 and 2 ) taken Figures 2 and 3 is, once in perspective and once shown as a schematic vertical section through it, a waxing device of the prior art, the between the take-up reel 7 and the leading roller 5 of an in Fig. 1 shown job 12 a twisting machine can be attached. The (to standardize against the DE2316452A amended) in these figures indicate the following:

• The yarn 2 passes on its way from the overfeed roller 5 to the take-up reel 7 shown schematically a waxing device 20, which consists essentially of the paraffin body 22 and a stationary support plate 23, which assumes the function of a receiving plate here. The paraffin body 22 is mounted on a guided through the support plate 23 and here formed as a square mandrel 21 of a drive shaft 21 a, which is driven by a motor 21 b. The motor 21 b is attached by means of the support plate 21 c on the machine side rail 21 d. The support plate 23 is attached to another machine longitudinal beam 23a, which also also carries shielding plates 23b. The take-up reel 7 is preceded by the thread-changing device 6 designed as a traversing yarn guide.

Fig. 4 shows a perspective view of a partial view of a first embodiment of a work 12 according to the invention with a lateral guide roller 25. The thread 2 comes from below and is accelerated by a covered by the cover 5 'overfeed roller 5 for adjusting the thread tension. Behind the overfeed roller 5, he leaves the cover 5 'through a slot 5 "therein and runs to the invention here left side mounted pulley 25. From there it is on the right side of the mandrel 21 over and between rotating receiving plate 23' and not Pictured rotating paraffin body 22 of Paraffing device 20 passed and continues to the Fadenchangiereinrichtung 6, not shown here. Due to the arrangement of the guide roller 25 on the left side of the thread 2 in the illustrated Position of the Fadenchangiereinrichtung 6 thereby deflected on the mandrel 21 to the left.

Advance roll 5 and paraffinizer 20, i. more precisely, their mandrel 21, are mounted in the center plane of the Fadenchangierbewegung. The pulley 25 is mounted on the left side thereof, to which its holder 25 'on the holder 20' of the waxing device 20 e.g. is attached by screwing.

In Fig. 5 is in front view to scale a preferred embodiment of the partial view Fig. 4 shown. In addition to the already in Fig. 4 components shown this time, the advance roller 5 and the paraffin body 22 are visible. Further, the trained here as traversing yarn 6 Fadenchangiereinrichtung can be seen. Shown as a solid line is the idealized as a straight run 2 'of the thread 2 to the located in its extreme right position traversing yarn guide 6. Dotted is shown in accordance with the equally idealized yarn path 2 "to the traversing yarn guide 6 in its extreme left position shown traversing yarn guides are not each own components, but shown only one and the same traversing yarn guide in its two extreme positions, which performs on its way in between a traverse stroke 6 'of 160 mm, as is typical for 6-inch take-up reels.

With regard to the sliding out under the paraffin body 22 out most critical position of the traversing yarn guide 6 is the right extreme position with the illustrated idealized thread path 2 '. In this position, the idealized thread path is deflected in this preferred embodiment on the mandrel 21 by about 25 °. The angle 33 between the lines 31 and 32 is thus about 205 °. In this case, the line 31 is the connecting line between the contact point of the thread 2 with the guide roller 25 and the side of the mandrel 21, on which the thread 2 is guided past this; and the line 32 is the line of connection between this side of the mandrel 21 and the point of contact of the thread 2 with the Fadenchangiereinrichtung 6. In all other positions of the traversing yarn guide 6 and in particular in its extreme left position of the deflection angle is greater than this about 25 °.

Shown dashed is still the connecting line 30 between the contact point of the thread 2 with the guide roller 25 and the contact point of the thread 2 with the traversing yarn guide 6. Since here the lateral offset of the guide roller 25 at the given traverse stroke 6 'of 160 mm is strong enough to deflect the idealized yarn path on the mandrel 21 at least always by about 25 °, this connection line 30 is during the entire traversing movement left of the mandrel 21, So on the side of the mandrel 21, which is opposite to that on which the thread 2 is guided past the mandrel 21.

This high minimum deflection of the straightforwardly idealized yarn path, even with the low yarn tension required for fine yarns, normally ensures that the yarn 2 does not slip out from under the paraffin body 22 and, moreover, it is in contact with the receiving mandrel 21 even during most of the traversing movement while the paraffin body 22 evenly removes.

In the Fig. 5 illustrated preferred embodiment is also particularly advantageous because it can be easily adapted without further changes for 8-inch take-up reels. For this purpose, namely only the traverse stroke 6 'must be increased accordingly, while all other dimensions can be maintained. The minimum deflection angle of the straightforward idealized yarn path on the mandrel 21 is thereby reduced from about 25 ° to about 10 °, but this is still sufficient for fine yarns.

The Fig. 6a and 6b show schematically in front view further embodiments of the partial view after Fig. 4 ,

The Fig. 6a first shows an embodiment in which in the most critical position of the traversing yarn guide 6 even the idealized as a straight line of yarn 2 'the mandrel 21 no longer touches, but runs at a certain distance to this. In this position, then falls the idealized yarn path 2 'with the just discussed in this position dashed line shown connecting line 30 together. In the other extreme position of the traversing yarn guide 6, so if the traversing yarn guide 6 in the figure is the left, there is the idealized yarn path 2 ", which is deflected on the mandrel 21, while the dotted line shown in this situation 30 then on the opposite side of the Take-up mandrel 21 runs.

Since even in the most critical position of the traversing yarn guide 6, the distance to the mandrel 21 is still quite low and thus the distance of the thread 2 to the outer edge of the Paraffinkörpers 22 is still quite large, this embodiment also avoids slipping out of the thread, at least for not too fine yarns 2 under the paraffin body 22. This is in Fig. 6a schematically as 2 '"a possible actual yarn path for the right turning point of the traversing yarn guide 6 as it could result from the by the rotation of Paraffinkörpers 22 and caused by the traversing movement and acting on the thread 2 acceleration forces. "the waxing device 20 does not yet leave and the thread 2 in a large part of the traverse stroke 6 'still touches the mandrel 21, so that the removal of the paraffin body 22 remains uniform enough, so this embodiment is still acceptable.

Fig. 6b in contrast to Fig. 6a Due to the smaller traverse stroke 6 ', the connecting line 30 now touches even in the most critical position of the traversing yarn guide 6 still the mandrel 21. This therefore gives a higher security that the thread 6 the Paraffing device 20 leaves, and ensures a more even removal of the Paraffinkörpers 22. This embodiment is so far compared to the embodiment of Fig. 6a prefers.

In the Fig. 7a and 7b are schematic in front view embodiments of the partial view after Fig. 4 shown with a downstream thread guide element 27. The figures represent similar situations as the Fig. 6a and 6b but differ from these mainly by the additional thread guide through the downstream Langöse 27 as a downstream thread guide element.

This succeeds in the comparison of Fig. 7a to Fig. 6a in that, in the same traversing stroke 6 ', the lateral offset of the deflecting roller 25 is reduced and the device can be made more compact. So here are in the vertical, compared to Fig. 6a , Paraffinierungseinrichtung 20, pulley 25 and the lead roller 5 closer adjacent, while the distance from the traversing yarn guide 6 to the waxing device 20 is only slightly increased. Thus, even in this situation, the straight line idealized yarn path does not lose contact with the mandrel 21 prevents the downstream Langöse 27 the migration of the thread 2 to the right in the critical positions of the traversing yarn guide 6. Thus tangent to the connecting line 30 'from the contact point of the thread 2 with the guide roller 25 to the contact point of the thread 2 with the Langöse 27, which the line 30 in the Fig. 6a and 6b corresponds even in this unfavorable position just the mandrel 21, while it is on the opposite side of the mandrel 21 during most of the traversing movement. Next limited the Langöse the threadline to the left and thus reaches a symmetrical traversing triangle.

In Fig. 7b were in contrast to Fig. 7a both a narrower Langöse 27 selected and the lateral offset of the guide roller 25 amplified while the traverse stroke 6 'the same as in Fig. 7a and thus bigger than in Fig. 6b is. As a result, during the entire traversing movement, a deflection of the straight-line idealized yarn path around the receiving mandrel 21 is achieved. The connecting line 30 'is here also in the critical traversing positions on the side of the mandrel 21, which is opposite to the side on which the thread 2 is guided, or tangent to the mandrel 21 on this opposite side.

The deflection of the straight line idealized yarn path around the mandrel 21 is again similar to Fig. 5 characterized by lines 31 and now 32 '. The line 31 is exactly like in Fig. 5 the connecting line between the contact point of the thread 2 with the guide roller 25 and the side of the receiving mandrel 21, on which the thread 2 is guided past this; and the role of the line 32 in Fig. 5 is now taken over by the line 32 ', ie from the line connecting this side of the mandrel 21 and the contact point of the thread 2 with the right edge of the Langöse 27. The deflection of the idealized as a straight line of threads accordingly close the lines 31 and 32' on the mandrel 21 an angle 33 'greater than 180 °, here about 195 °, corresponding to a deflection of the idealized yarn path of about 15 °. However, these 15 ° are not required for all situations, but the invention preferably recommends, similar to without the use of a downstream thread guide element 27, a minimum deflection of 10 °.

Although the work according to the invention has been described above with a waxing device on the basis of selected embodiments, are for the skilled person both further variants and combinations of the described specific embodiments conceivable. For example, in the Fig. 7a and 7b instead of a Langöse 27 of the yarn path are limited only on the right side, for example by a guide pin, and in all embodiments, it is possible to move the paraffin 20 to the right or the advance roller 5 to the left. Possibly then can be dispensed with the guide roller 25 as an additional component for the upstream lateral offset of the thread 2. Of course, however, combinations of all these offset possibilities are practically feasible.

Further, for the sake of completeness, it should be pointed out that the indefinite article does not exclude that components designated by it can not also be present multiple times. Likewise, the description of a particular component does not necessarily mean that its functions could not be distributed among several alternative components, or that the functions of several described components could not be grouped together.

Claims (10)

Workstation (12) of a textile machine with a waxing device (20) for a thread (2), wherein the waxing device (20) comprises a receiving mandrel (21) for a paraffin body (22) and the thread (2) for its waxing above or below the Paraffin body (22) and the side of the mandrel (21) is guided, and the work (12), seen in the running direction of the thread (2) via an upstream thread guide element (5, 25) immediately before and via a Fadenchangiereinrichtung (6) after the Has waxing device (20),
characterized,
in that , with respect to the center plane of the thread pivoting effected by the thread-changing device (6), the receiving mandrel (21) is displaced laterally in the same direction as the thread (2) towards the receiving mandrel (21),
or that, based on the center plane of the Fadenchangierung caused by the Fadenchangiereinrichtung (6), the upstream thread guide element (5, 25) laterally in the opposite direction as the thread (2) to the mandrel (21) is offset. Workstation (12) according to claim 1, characterized in that the lateral displacements of the receiving mandrel (21) or the upstream thread guide element (5, 25) individually or in combination are so strong that the thread (2) during the Fadenchangierung and in the Operation of the workstation (12) occurring thread tension fluctuations the waxing device (20) does not leave. Workstation (12) according to claim 2, characterized in that the lateral displacements of the mandrel (21) or the upstream thread guide element (5, 25) individually or in combination are so strong that the thread (2) during the Fadenchangierung and in the Operation of the workstation (12) occurring thread tension fluctuations does not lose its contact with the mandrel (21). Workstation (12) according to claim 1 or 2, characterized in that the connecting line (30) between the contact point of the thread (2) with the upstream Thread guide element (5, 25) and the contact point of the thread (2) with the Fadenchangiereinrichtung (6) during the entire Fadenchangiereinrichtung (6) caused Fadenchangierung either the receiving mandrel (21) intersects or at least tangent or on the side of the receiving mandrel (21) runs, which is opposite to that on which the thread (2) along the mandrel (21) is guided along. Workstation (12) according to claim 4, characterized in that the connecting line (31) between the contact point of the thread (2) with the upstream thread guide element (5, 25) and the side of the receiving mandrel (21) on which the thread (2) along the mandrel (21), and the connecting line (32) of this side of the mandrel (21) with the point of contact of the thread (2) with the Fadenchangiereinrichtung (6) during the entire by the Fadenchangiereinrichtung (6) caused Fadenchangierung an angle (33 ) of at least 190 °. Workstation (12) according to claim 1 or 2, characterized in that it is in the upstream thread guide element to one of the following components: a deflection roller (25), a pin, an eyelet, a floating tail or a guide fork. Workstation (12) according to claim 1 or 2, characterized in that it is the upstream thread guide element to a yarn feeding device (5) and in particular to an overfeed roller (5). Workstation (12) according to claim 1 or 2, characterized in that the workstation (12) via one of the waxing device (20) downstream and in front of the Fadenchangiereinrichtung (6) befindliches thread guide element (27) which caused by the Fadenchangiereinrichtung (6) lateral movement of the thread (2) in the direction of the side on which the thread (2) on the mandrel (21) is guided, limited. Workstation (12) according to claim 8, characterized in that the connecting line (30 ') between the contact point of the thread (2) with the upstream thread guide element (5, 25) and the contact point of the thread (2) with the Downstream thread guide element (27) during the entire Fadenchangiereinrichtung (6) caused Fadenchangierung either the receiving mandrel (21) intersects or at least tangent or on the side of the mandrel (21), which is opposite to that on which the thread (2) on Take-up mandrel (21) is guided along. Workstation (12) according to claim 8, characterized in that it is in the downstream thread guide element to one of the following components: a Langöse (27), a deflection roller, a pin, an eyelet, a floating tail or a guide fork.

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