WO2003033788A2 - Yarn treatment device - Google Patents
Yarn treatment device Download PDFInfo
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- WO2003033788A2 WO2003033788A2 PCT/EP2002/011175 EP0211175W WO03033788A2 WO 2003033788 A2 WO2003033788 A2 WO 2003033788A2 EP 0211175 W EP0211175 W EP 0211175W WO 03033788 A2 WO03033788 A2 WO 03033788A2
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- Prior art keywords
- yarn
- channel
- treatment device
- projections
- wall
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
- D02G1/161—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
Definitions
- the invention relates to a yarn treatment device, in particular for the air swirling of filament yarn, with at least one yarn channel, the inner wall of which has a yarn guide area, against which the yarn lies when it passes through the yarn channel.
- the inner wall of the yarn channel consists of particularly wear-resistant material, for. B. made of highly wear-resistant ceramic.
- the entire inner wall of the yarn channel is smoothly polished and has no projections protruding into the area of the yarn passage.
- wall sticking effects can occur, in particular, when the yarn is passing very quickly. These wall-holding effects can be observed in particular on smoothly polished surfaces and are based on adhesion and the formation of electrostatic charges.
- the wall adhesion effects are particularly intense with smooth yarns, in which the filaments run completely straight, with microfibres with dtx ⁇ 1 and with yarn speeds of over 7,000 per m / min.
- the invention proposes, starting from the prior art of the type mentioned, that the inner wall of the yarn channel in the yarn guide area is provided with at least two projections projecting into the channel cross-section, against which the yarn passing through lies in such a way that it lies between the projections in is kept close to the inner wall.
- the contact area between the yarn and the inner wall of the yarn channel is reduced to a minimum. Accordingly, the wall adhesion effects explained above are reduced, to an extent which is absolutely harmless for the passage of the yarn.
- the contact surfaces between the yarn and the duct wall are particularly small, the wear at the contact points is more intensive.
- this fact has hardly any negative impact on the high-quality materials available today. Because of the minimization of the sticking effect on the wall, the service life of the yarn treatment device according to the invention is even longer than that of the yarn guiding devices known according to the prior art, which, however, are still to be feared due to the sticking effect on the wall, namely filament breaks.
- Protrusions are provided on which the yarn passes through the yarn channel is in contact.
- a large number of points of contact arranged at a distance from one another are created along the yarn guide area, so that the wear is better distributed and the service life is extended accordingly without the wall-sticking effects explained above occurring.
- Another advantage is that between the successive projections there are depressions in which the spinning oil stripped from the filament yarn passing through can collect in order to be subsequently absorbed again by the yarn passing through.
- the yarn treatment device according to the invention thus has the particular advantage that less spinning oil is stripped from the yarn passing through. This is important insofar as the presence of spin oil is useful or even necessary in the downstream processes.
- the projections are expediently designed as ribs running transversely to the channel axis. This has the advantage that similar guiding properties result over the entire width of the channel.
- the ribs are curved in an arc in plan view. As a result, the ribs give the yarn sliding over them an additional guide directed in the middle of the channel.
- the ribs can alternate inclined to the right and left in the direction of passage of the yarn and viewed in plan view.
- the yarn on each rib experiences a guide force directed to the side, the direction of which reverses from rib to rib on each rib. This also results in the yarn being held approximately in the middle of the guide channel.
- the projections are each slightly rounded in the apex. This prevents the yarn or individual filaments of the yarn from getting caught on the projections.
- the yarn runs tangentially to the roundings and thus touches the individual projections approximately at a point, which reliably prevents any adhesion to the wall.
- the projections in the apex region each have a flattening running in the direction of yarn passage. However, these flattenings are so short in the direction of yarn passage that wall adhesion effects cannot develop. However, they offer larger support surfaces for the thread passing through, which minimizes wear and improves the service life of the yarn treatment device.
- a particularly preferred embodiment of the invention provides that a blowing nozzle which runs essentially transversely to the longitudinal axis of the channel opens into the center of the yarn guide channel.
- a blowing nozzle which runs essentially transversely to the longitudinal axis of the channel opens into the center of the yarn guide channel.
- the blowing nozzle expediently opens out in the area between two projections. This ensures that the continuous yarn opposite the blowing nozzle lies freely in space and can be set into vibration by the blowing jet and by the flow vortices caused by the blowing jet.
- the swirls running along the inner wall of the yarn channel can engage under the yarn running between the projections at a distance from the wall, which likewise has a favorable effect on the swirling effect.
- the blowing nozzle can also open out in the flattened apex region of a projection.
- the continuous yarn is guided in the immediate vicinity of the blow nozzle and can therefore vibrate less freely. This can be advantageous if the above-mentioned vibrations are undesirable due to the special properties of the yarn.
- the walls of the flow divider and the adjoining channel walls are expediently rounded following the course of the two eddies. As a result, the blown-in air is supplied to the yarn guide area even better.
- Figure 1 shows a yarn treatment device according to the invention in longitudinal section.
- FIG. 2 shows a cross section along the line II-II in FIG. 1;
- Fig. 3 shows a longitudinal section through a
- Fig. 4 shows a longitudinal section through a
- Fig. 5 is a plan view of the
- Fig. 6 is a plan view of the yarn guide area of a yarn treatment device according to the invention in a fifth
- Fig. 7 shows a cross section through a
- Yarn treatment device with a flow divider opposite the injection nozzle.
- the yarn treatment device according to the invention shown only schematically in its essential parts in the drawing, has a channel block 1 consisting of highly wear-resistant ceramic and a cover block 3 which can be displaced in the direction of the double arrow 2 (shown in FIG. 2) and which is also made of wear-resistant ceramic.
- a yarn channel 4 serving for yarn treatment which is formed as an indentation in the top of the channel block 1 and is closed at the top by the overlying cover block 3.
- the cover block 3 By moving the cover block 3 to the left (shown in Fig. 2) in the open position, the channel 4 is exposed over its entire length upwards, so that the yarn can be inserted from above.
- the cover block 3 is then moved back to the right into the closed position.
- a blower nozzle 5 which can be acted upon by compressed air, opens into the yarn channel 4 approximately in the region of the center thereof, the compressed air of which whirls the filament yarn passing through the yarn channel.
- the yarn guide area located at the bottom of the yarn channel 4 is provided with two projections 6 protruding into the channel cross-section, against which the yarn 7 passing through - shown in dash-dotted lines in the drawing - rests in such a way that that it is in the area between the two projections 6 at a close distance from the wall runs.
- the yarn 7 is guided by appropriate yarn guides so that it lies against the yarn guide area located at the bottom of the yarn channel 4.
- the projections 6 are designed as ribs which run transversely to the channel axis and are rounded at the top. At the roundings, the yarn 7 is tangential, i. H. punctiform. Thus, the wall adhesion effects occurring between the wall of the thread guide channel 4 and the yarn 7 are reduced to an absolute minimum.
- the yarn channel 4 formed in the channel block 1 has in the yarn guide area, ie. H. on the bottom of the yarn channel 4 a large number of projections 8 arranged at a relatively close distance from one another, which are also designed as ribs rounded upwards.
- Fig. 5 only the yarn guide area, ie the bottom of the yarn channel is shown in plan view.
- the projections 11 shown in Fig. 5 also have the shape of rounded ribs, which are arcuate here, the centers of the arches each being in the middle of the channel bottom.
- the thread 7 is centered as it passes through the yarn guide channel 4.
- the compressed air flowing out of the yarn channel 4 experiences corresponding deflections.
- the rounded ribs serving as projections alternately incline to the right and to the left as viewed in plan view of the yarn 7.
- the running yarn 7 experiences executives alternately to the right and left as it runs over the successive projections 12.
- the compressed air flowing through the yarn channel 4 is deflected.
- the cover block 3 is provided on the side opposite the blowing nozzle 5 with a flow divider 13 extending in the direction of the channel axis and projecting into the center of the nozzle jet. This flow divider divides the compressed air jet emerging from the blowing nozzle 5 into two counter-rotating vortices.
- the walls of the flow divider 13 and the adjoining channel walls of the yarn channel 4 are rounded, following the course of these eddies. This ensures that the compressed air blown in via the blowing nozzle 5 is returned along the channel walls to the bottom of the yarn channel 4, where it can easily grasp the continuous yarn 7 exposed between the projections from below.
- the invention is also suitable for yarn guide channels without a blowing nozzle or with differently designed yarn treatment devices, specifically wherever the wall adhesion effects explained above are to be avoided.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Gambehandlunαsvorrichtunα Gambehandlunαsvorrichtunα
Die Erfindung betrifft eine Garnbehandlungsvorrichtung, insbesondere für die Luftverwirbelung von Filamentgam, mit mindestens einem Garnkanal, dessen Innenwand einen Garnführungsbereich aufweist, an welchem das Garn bei seinem Durchtritt durch den Garnkanal anliegt.The invention relates to a yarn treatment device, in particular for the air swirling of filament yarn, with at least one yarn channel, the inner wall of which has a yarn guide area, against which the yarn lies when it passes through the yarn channel.
Bei nach dem Stande der Technik bekannten Garnbehandlungsvorrichtung der genannten Art besteht die Innenwand des Garnkanals aus besonders verschwleißfestem Material, z. B. aus hochverschleißfester Keramik. Um eine möglichst geringe Durchtrittsreibung zu erzielen, ist die gesamte Innenwand des Garnkanals glatt poliert ausgebildet und hat keine in den Garndurchtrittsbereich vorstehende Vorsprünge.In the prior art yarn treatment device of the type mentioned, the inner wall of the yarn channel consists of particularly wear-resistant material, for. B. made of highly wear-resistant ceramic. In order to achieve the lowest possible passage friction, the entire inner wall of the yarn channel is smoothly polished and has no projections protruding into the area of the yarn passage.
Es ist bekannt, daß insbesondere bei einer sehr hohen Durchtrittsgeschwindigkeit des Garnes Wandhafteffekte auftreten können. Diese Wandhafteffekte sind insbesondere bei glatt polierten Oberflächen zu beobachten und beruhen auf Adhäsion und sich ausbildenden elektrostatischen Aufladungen. Besonders intensiv sind die Wandhafteffekte bei Glattgarnen, bei welchen die Filamente völlig gradlinig verlaufen, bei Mikrofiiamenten mit dtx < 1 sowie bei Garngeschwindigkeiten von über 7.000 pro m/min.It is known that wall sticking effects can occur, in particular, when the yarn is passing very quickly. These wall-holding effects can be observed in particular on smoothly polished surfaces and are based on adhesion and the formation of electrostatic charges. The wall adhesion effects are particularly intense with smooth yarns, in which the filaments run completely straight, with microfibres with dtx <1 and with yarn speeds of over 7,000 per m / min.
Die Wandhafteffekte führen zu einer überhöhten Reibung und im schlimmsten Fall zu Filamentbrüchen. Man hat bereits versucht, diesen Wandhafteffekten dadurch zu begegnen, daß der mit dem Garn in Berührung kommende Garnführungsbereich mit Mikroporen versehen wird, was zum sogenannten Orangenhauteffekt führt. Es hat sich aber herausgestellt, daß diese Mikroporen von dem durchtretenden Garn außeror- dentlich schnell wegpoliert werden, so daß sich die unerwünschten Wandhafteffekte meistens nach kurzer Betriebszeit wieder einstellen.The wall adhesion effects lead to excessive friction and in the worst case to filament breaks. Attempts have already been made to counteract these wall-holding effects by providing the yarn guide area which comes into contact with the yarn with micropores, which leads to the so-called orange peel effect. It has been found, however, that these micropores are polished away extremely quickly by the yarn passing through, so that the undesirable wall-sticking effects usually recur after a short operating time.
Es ist deshalb Aufgabe der Erfindung, die Garnbehandlungsvorrichtung der eingangs genannten Art dahingehend weiterzubilden, daß die unerwünschten Wandhafteffekte so gut wie möglich vermieden werden.It is therefore an object of the invention to further develop the yarn treatment device of the type mentioned at the outset in such a way that the undesirable wall-holding effects are avoided as much as possible.
Zur Lösung dieser Aufgabe schlägt die Erfindung ausgehend vom Stand der Technik der eingangs genannten Art vor, daß die Innenwand des Garnkanals im Garnführungsbereich mit mindestens zwei in den Kanalquerschnitt vorstehenden Vorsprüngen versehen ist, an welchen das durchtretende Garn derart anliegt, daß es zwischen den Vorsprüngen in einem engen Abstand zur Innenwand gehalten wird.To achieve this object, the invention proposes, starting from the prior art of the type mentioned, that the inner wall of the yarn channel in the yarn guide area is provided with at least two projections projecting into the channel cross-section, against which the yarn passing through lies in such a way that it lies between the projections in is kept close to the inner wall.
Bei der Garnbehandlungsvorrichtung gemäß der Erfindung wird die Berührungsfläche zwischen dem Garn und der Innenwand des Garnkanals auf ein Minimum reduziert. Dementsprechend werden die oben erläuterten Wandhafteffekte reduziert, und zwar auf ein Maß, welches für den Durchtritt des Garnes absolut unschädlich ist. Da die Berührungsflächen zwischen Garn und Kanalwand besonders klein sind, ist allerdings der Verschleiß an den Berührungsstellen intensiver. Dieser Umstand wirkt sich bei den heute zur Verfügung stehenden hochwertigen Materialien aber kaum noch negativ aus. Wegen der Minimierung des Wandhafteffektes sind die Standzeiten bei den Garnbehandlungsvorrichtung gemäß der Erfindung sogar größer, als bei den nach dem Stand der Technik bekannten Garnführungsvorrichtungen, bei denen allerdings wegen der Wandhafteffekte noch Beschädigungen des durchtretenden Garnes zu befürchten sind, nämlich Filamentbrüche.In the yarn treatment device according to the invention, the contact area between the yarn and the inner wall of the yarn channel is reduced to a minimum. Accordingly, the wall adhesion effects explained above are reduced, to an extent which is absolutely harmless for the passage of the yarn. However, since the contact surfaces between the yarn and the duct wall are particularly small, the wear at the contact points is more intensive. However, this fact has hardly any negative impact on the high-quality materials available today. Because of the minimization of the sticking effect on the wall, the service life of the yarn treatment device according to the invention is even longer than that of the yarn guiding devices known according to the prior art, which, however, are still to be feared due to the sticking effect on the wall, namely filament breaks.
Eine bevorzugte Ausführungsform der Erfindung sieht vor, daß im Garnfüh- rungsbereich eine große Zahl von in den Kanalquerschnitt vorstehendenA preferred embodiment of the invention provides for a large number of those projecting into the channel cross section in the yarn guidance area
Vorsprüngen vorgesehen ist, an denen das Garn bei seinem Durchtritt durch den Garnkanal anliegt. Hierdurch wird entlang dem Garnführungsbereich eine große Zahl von mit Abstand zueinander angeordneten Berührungsstellen geschaffen, so daß der Verschleiß besser verteilt wird und die Standzeit entsprechend verlängert wird, ohne daß die oben erläuterten Wandhafteffekte auftreten. Ein weiterer Vorteil liegt darin, daß sich zwischen den aufeinander folgenden Vorsprüngen Vertiefungen befinden, in denen sich das von dem durchlaufenden Filamentgam abgestreifte Spinnöl sammeln kann, um anschließend von dem durchlaufenden Garn wieder aufgesogen zu werden. Die Garnbehandlungsvorrichtung gemäß der Erfindung hat also den besonderen Vorteil, daß von dem durchlaufenden Garn weniger Spinnöl abgestreift wird. Das ist insofern von Bedeutung, als in den nachgeschalteten Prozessen die Anwesenheit von Spinnöl nützlich oder sogar erforderlich ist.Protrusions are provided on which the yarn passes through the yarn channel is in contact. As a result, a large number of points of contact arranged at a distance from one another are created along the yarn guide area, so that the wear is better distributed and the service life is extended accordingly without the wall-sticking effects explained above occurring. Another advantage is that between the successive projections there are depressions in which the spinning oil stripped from the filament yarn passing through can collect in order to be subsequently absorbed again by the yarn passing through. The yarn treatment device according to the invention thus has the particular advantage that less spinning oil is stripped from the yarn passing through. This is important insofar as the presence of spin oil is useful or even necessary in the downstream processes.
Die Vorsprünge sind zweckmäßig als quer zur Kanalachse verlaufende Rippen ausgebildet. Das hat den Vorteil, daß sich über die gesamte Breite des Kanals gleichartige Führungseigenschaften ergeben.The projections are expediently designed as ribs running transversely to the channel axis. This has the advantage that similar guiding properties result over the entire width of the channel.
Um zu erreichen, daß die Rippen das durchlaufende Garn etwa in der Mitte des Kanals halten, ist weiterhin vorgesehen, daß die Rippen in Draufsicht bogenförmig gekrümmt sind. Hierdurch erteilen die Rippen dem über sie gleitenden Garn eine in die Mitte des Kanals gerichtete, zusätzliche Führung.In order to ensure that the ribs hold the continuous yarn approximately in the middle of the channel, it is further provided that the ribs are curved in an arc in plan view. As a result, the ribs give the yarn sliding over them an additional guide directed in the middle of the channel.
Alternativ können die Rippen in Durchlaufrichtung des Garnes und in Draufsicht gesehen abwechselnd nach rechts und links geneigt verlaufen. Hierdurch erfährt das Garn an jeder Rippe eine zur Seite gerichtet eine Führungskraft, deren Richtung sich von Rippe zu Rippe an jeder Rippe umkehrt. Auch hierdurch wird das Garn im Ergebnis etwa in der Mitte des Führungskanals gehalten.Alternatively, the ribs can alternate inclined to the right and left in the direction of passage of the yarn and viewed in plan view. As a result, the yarn on each rib experiences a guide force directed to the side, the direction of which reverses from rib to rib on each rib. This also results in the yarn being held approximately in the middle of the guide channel.
Weiterhin ist vorgesehen, daß die Vorsprünge jeweils im Scheitel leicht abgerundet ausgebildet sind. Hierdurch wird verhindert, daß das Garn oder einzelne Filamente des Garnes an den Vorsprüngen hängen bleiben. Das Garn verläuft tangential zu den Abrundungen und berührt somit die einzelnen Vorsprünge etwa punktförmig, wodurch jedwede Wandhaftung zuverlässig vermieden wird. Eine Alternative hierzu sieht vor, daß die Vorsprünge im Scheitelbereich jeweils eine in Garndurchlaufrichtung verlaufende Abflachung aufweisen. Diese Abflachungen sind in Garndurchlaufrichtung allerdings so kurz, daß sich Wandhafteffekte nicht ausbilden können. Sie bieten dem durchtretenden Garn aller- dings größere Stütztf lachen, wodurch der Verschleiß minimiert und die Standzeit der Garnbehandlungsvorrichtung verbessert wird.It is further provided that the projections are each slightly rounded in the apex. This prevents the yarn or individual filaments of the yarn from getting caught on the projections. The yarn runs tangentially to the roundings and thus touches the individual projections approximately at a point, which reliably prevents any adhesion to the wall. An alternative to this provides that the projections in the apex region each have a flattening running in the direction of yarn passage. However, these flattenings are so short in the direction of yarn passage that wall adhesion effects cannot develop. However, they offer larger support surfaces for the thread passing through, which minimizes wear and improves the service life of the yarn treatment device.
Eine besonders bevorzugte Ausführungsform der Erfindung sieht vor, daß in der Mitte des Garnführungskanals eine im wesentlichen quer zur Kanallängsachse verlaufende Blasdüse einmündet. Mit dieser Blasdüse ist es möglich, das durch die Garnbehandlungsvorrichtung durchtretende Garn, z. B. mit Druckluft, zu verwirbeln und dadurch zu texturieren. Dabei erteilten die in den Kanalquerschnitt vorstehenden Vorsprünge der durch den kanal abströmenden Druckluft zusätzliche Umlenkungen, wodurch der Verwirbelungseffekt verbessert wird.A particularly preferred embodiment of the invention provides that a blowing nozzle which runs essentially transversely to the longitudinal axis of the channel opens into the center of the yarn guide channel. With this blow nozzle, it is possible to pass the yarn passing through the yarn treatment device, e.g. B. with compressed air, swirl and thereby texturize. The projections protruding into the channel cross-section gave the deflection of the compressed air flowing through the channel additional deflections, thereby improving the swirling effect.
Zweckmäßig mündet die Blasdüse im Bereich zwischen zwei Vorsprüngen aus. Hierdurch wird erreicht, daß das durchlaufende Garn der Blasdüse gegenüberliegend frei im Raum liegt und durch den Blasstrahl und durch die vom Blasstrahl verursachten Strömungswirbel in Schwingung versetzt werden kann. Außerdem können die entlang der Innenwand des Garnkanals verlaufenden Wirbel das zwischen den Vorsprüngen mit Abstand zur Wand verlaufende Garn untergreifen, was sich ebenfalls günstig auf den Verwirbelungseffekt auswirkt.The blowing nozzle expediently opens out in the area between two projections. This ensures that the continuous yarn opposite the blowing nozzle lies freely in space and can be set into vibration by the blowing jet and by the flow vortices caused by the blowing jet. In addition, the swirls running along the inner wall of the yarn channel can engage under the yarn running between the projections at a distance from the wall, which likewise has a favorable effect on the swirling effect.
Alternativ kann die Blasdüse auch im abgeflachten Scheitelbereich eines Vorsprunges ausmünden. In diesem Fall ist das durchlaufende Garn in unmittelbarer Nachbarschaft der Blasdüse geführt und kann dementsprechend weniger frei schwingen. Das kann vorteilhaft sein, wenn aufgrund von besonderen Eigenschaften des Garnes die oben erwähnten Schwingungen unerwünscht sind.Alternatively, the blowing nozzle can also open out in the flattened apex region of a projection. In this case, the continuous yarn is guided in the immediate vicinity of the blow nozzle and can therefore vibrate less freely. This can be advantageous if the above-mentioned vibrations are undesirable due to the special properties of the yarn.
Durch die oben erläuterten verschiedenen Anordnungen der Blasdüse hat man es in der Hand durch eine entsprechende Ausgestaltung des Garnkanals, der Vorsprünge und der Düseneinmündung den besonderen Anforderungen des jeweiligen Garnes optimal Rechnung zu tragen. Um die von der Blasdüse verursachten Wirbel entlang der Innenwand des Garnkanals zu führen ist vorgesehen, daß an der der Blasdüse gegenüberliegenden Kanalwand ein in Richtung der Kanalachse verlaufender, in die Mitte des Düsenstrahles ragender Strömungsteiler vorgesehen ist. Dieser Strömungsteiler teilt den Blasstrahl in zwei gegensätzlich drehende Wirbel, durch welche die eingeblasene Luft entlang den abgerundeten Kanalwandungen in den Garnführungsbereich zurückgeführt wird. Dort kann die eingeblasene Luft in den Bereichen, in denen das Garn zwischen zwei Vorsprüngen mit Abstand zur Wand verläuft, das durchlaufende Garn von unten erfassen und entsprechend besser verwirbeln.Due to the various arrangements of the blowing nozzle explained above, it is possible to optimally take into account the special requirements of the respective yarn by appropriately designing the yarn channel, the projections and the nozzle mouth. In order to guide the eddies caused by the blowing nozzle along the inner wall of the yarn channel, it is provided that a flow divider extending in the direction of the channel axis and projecting into the center of the nozzle jet is provided on the channel wall opposite the blowing nozzle. This flow divider divides the blow jet into two oppositely rotating vortices, through which the blown-in air is returned along the rounded channel walls to the yarn guide area. There, in the areas where the yarn runs between two projections at a distance from the wall, the blown-in air can grasp the continuous yarn from below and swirl better accordingly.
Zweckmäßig sind die Wandungen des Stromteilers und die sich anschließenden Kanalwandungen dem Verlauf der beiden Wirbel folgend abgerundet ausgebildet. Hierdurch wird die eingeblasene Luft noch besser dem Garnführungsbereich zugeführt.The walls of the flow divider and the adjoining channel walls are expediently rounded following the course of the two eddies. As a result, the blown-in air is supplied to the yarn guide area even better.
Ausführungsbeispiele der Erfindung werden im folgenden anhand der Zeichnung näher erläutert. Es zeigen:Embodiments of the invention are explained in more detail below with reference to the drawing. Show it:
Fig. 1 eine Garnbehandlungsvorrichtung gemäß der Erfindung im Längsschnitt;Figure 1 shows a yarn treatment device according to the invention in longitudinal section.
Fig. 2 einen Querschnitt entlang der Linie II - II in Figur 1 ;2 shows a cross section along the line II-II in FIG. 1;
Fig. 3 einen Längsschnitt durch eineFig. 3 shows a longitudinal section through a
Garnbehandlungsvorrichtung gemäß der Erfindung in einer zweitenYarn treatment device according to the invention in a second
Ausführungsform;embodiment;
Fig. 4 einen Längsschnitt durch eineFig. 4 shows a longitudinal section through a
Garnbehandlungsvorrichtung gemäß der Erfindung in einer dritten Ausführungsform;Yarn treatment device according to the invention in a third embodiment;
Fig. 5 eine Draufsicht auf denFig. 5 is a plan view of the
Garnführungsvorrichtung einer Garnbehandlungsvorrichtung gemäß der Erfindung in einer vierten Ausführungsform;Yarn guide device of a yarn treatment device according to the Invention in a fourth embodiment;
Fig. 6 eine Draufsicht auf den Garnführungsbereich einer Garnbehandlungsvorrichtung gemäß der Erfindung in einer fünftenFig. 6 is a plan view of the yarn guide area of a yarn treatment device according to the invention in a fifth
Ausführungsform;embodiment;
Fig. 7 einen Querschnitt durch eineFig. 7 shows a cross section through a
Garnbehandlungsvorrichtung gemäß der Erfindung mit einem der Einblasdüse gegenüberliegenden Stromteiler.Yarn treatment device according to the invention with a flow divider opposite the injection nozzle.
Die in der Zeichnung nur schematisch in ihren wesentlichen Teilen dargestellte Garnbehandlungsvorrichtung gemäß der Erfindung weist einen aus hochverschleißfester Keramik bestehenden Kanalblock 1 und einen in Richtung des Doppelpfeiles 2 (in Fig. 2 dargestellt) verschiebbaren Deckblock 3 auf, der ebenfalls aus verschleißfester Keramik hergestellt ist.The yarn treatment device according to the invention, shown only schematically in its essential parts in the drawing, has a channel block 1 consisting of highly wear-resistant ceramic and a cover block 3 which can be displaced in the direction of the double arrow 2 (shown in FIG. 2) and which is also made of wear-resistant ceramic.
In der Oberseite des Kanalblockes 1 befindet sich ein der Garnbehandlung dienender Garnkanal 4, der als Einformung in der Oberseite des Kanalblockes 1 ausgebildet ist und nach oben hin durch den aufliegenden Deckblock 3 abgeschlossen ist. Durch Verschieben des Deckblockes 3 nach links (in Fig. 2 dargestellt) in die Öffnungsstellung wird der Kanal 4 über seine gesamte Länge nach oben offengelegt, so daß das Garn von oben eingelegt werden kann. Zum Schließen des Garnkanals 4 wird sodann der Deckblock 3 wieder nach rechts in die Schließstellung verschoben.In the top of the channel block 1 there is a yarn channel 4 serving for yarn treatment, which is formed as an indentation in the top of the channel block 1 and is closed at the top by the overlying cover block 3. By moving the cover block 3 to the left (shown in Fig. 2) in the open position, the channel 4 is exposed over its entire length upwards, so that the yarn can be inserted from above. To close the yarn channel 4, the cover block 3 is then moved back to the right into the closed position.
In den Garnkanal 4 mündet etwa im Bereich von dessen Mitte eine mit Druckluft beaufschlagbare Blasdüse 5 ein, deren Druckluft das durch den Garnkanal durchtretende Filamentgarn verwirbelt.A blower nozzle 5, which can be acted upon by compressed air, opens into the yarn channel 4 approximately in the region of the center thereof, the compressed air of which whirls the filament yarn passing through the yarn channel.
Wie aus Fig. 1 ersichtlich ist, ist der am Boden des Garnkanals 4 befindliche Garnführungsbereich mit zwei in den Kanalquerschnitt vorstehenden Vorsprüngen 6 versehen, an welchen das durchtretende Garn 7 - in der Zeich- nung in strichpunktierter Linie dargestellt - anliegt, und zwar derart, daß es im Bereich zwischen den beiden Vorsprüngen 6 in einem engem Abstand zur Ka- nalwand verläuft. Vor und hinter dem Garnkanal ist dsa Garn 7 durch entsprechende Garnführer so geführt, daß es an dem am Boden des Garnkanals 4 befindlichen Garnführungsbereich anliegt.As can be seen from FIG. 1, the yarn guide area located at the bottom of the yarn channel 4 is provided with two projections 6 protruding into the channel cross-section, against which the yarn 7 passing through - shown in dash-dotted lines in the drawing - rests in such a way that that it is in the area between the two projections 6 at a close distance from the wall runs. In front of and behind the yarn channel, the yarn 7 is guided by appropriate yarn guides so that it lies against the yarn guide area located at the bottom of the yarn channel 4.
Die Vorsprünge 6 sind als quer zur Kanalachse verlaufende Rippen ausgebildet, die nach oben abgerundet ausgebildet sind. An den Abrundungen liegt das Garn 7 tangential, d. h. punktförmig an. Somit sind die zwischen der Wandung des Gamführungkanales 4 und dem Garn 7 auftretenden Wandhafteffekte auf ein absolutes Minimum reduziert.The projections 6 are designed as ribs which run transversely to the channel axis and are rounded at the top. At the roundings, the yarn 7 is tangential, i. H. punctiform. Thus, the wall adhesion effects occurring between the wall of the thread guide channel 4 and the yarn 7 are reduced to an absolute minimum.
Beim Ausführungsbeispiel gemäß Fig. 3 weist der in dem Kanalblock 1 ausge- bildete Garnkanal 4 im Garnführungsbereich, d. h. am Boden des Garnkanals 4 eine große Zahl von mit verhältnismäßig engem Abstand zueinander angeordneten Vorsprüngen 8 auf, die ebenfalls als nach oben hin abgerundete Rippen ausgebildet sind.In the embodiment according to FIG. 3, the yarn channel 4 formed in the channel block 1 has in the yarn guide area, ie. H. on the bottom of the yarn channel 4 a large number of projections 8 arranged at a relatively close distance from one another, which are also designed as ribs rounded upwards.
Beim Ausführungsbeispiel nach Fig. 4 sind im Garnführungsbereich, d. h. am Boden des Garnkanals 4, in den Kanalquerschnitt vorspringende Vorsprünge 9 vorgesehen, die jeweils oben abgeflacht ausgebildet sind und zwischen denen muldenförmige Vertiefungen 10 angeordnet sind. Eine Besonderheit bei dieser Ausführungsform besteht noch darin, daß die Blasdüse 5 im abgeflachten Bereich eines solchen Vorsprunges 9 ausmündet. Das hat zur Folge, daß das Garn 7 hier in unmittelbarer Nachbarschaft der Blasdüse 5 an der Kanalwandung anliegt.4 are in the yarn guide area, ie. H. at the bottom of the yarn channel 4, projections 9 projecting into the channel cross section are provided, each of which is flattened at the top and between which trough-shaped depressions 10 are arranged. A special feature of this embodiment is that the blowing nozzle 5 opens into the flattened area of such a projection 9. The result of this is that the yarn 7 bears here in the immediate vicinity of the blowing nozzle 5 on the channel wall.
In Fig. 5 ist lediglich der Garnführungsbereich, d. h. der Boden des Garnkanals in Draufsicht dargestellt. Die in Fig. 5 dargestellten Vorsprünge 11 haben ebenfalls die Form von abgerundeten Rippen, die hier bogenförmig ausgebildet sind, wobei die Mitten der Bögen jeweils in der Mitte des Kanalbodens liegen. Durch diese bogenförmige Ausgestaltung der Vorsprünge erfährt der Faden 7 bei seinem Durchlauf durch den Garnführungskanal 4 eine Zentrierung. Außerdem erfährt die den Garnkanal 4 abströmende Druckluft entsprechende Umlenkungen. Beim Ausführungsbeispiel nach Fig. 6, in der wiederum nur der als Garnführungsbereich dienenden Kanalboden dargestellt ist, verlaufenden die als Vorsprünge dienenden abgerundeten Rippen in Durchlaufrichtung des Garnes 7 und in Draufsicht gesehen abwechselnd nach rechts und nach links geneigt. Hierdurch erfährt das durchlaufende Garn 7 bei seinem Lauf über die aufeinanderfolgenden Vorsprünge 12 abwechselnd Führungskräfte nach rechts und links. Ebenso wird die den Garnkanal 4 durchströmende Druckluft abgelenkt.In Fig. 5 only the yarn guide area, ie the bottom of the yarn channel is shown in plan view. The projections 11 shown in Fig. 5 also have the shape of rounded ribs, which are arcuate here, the centers of the arches each being in the middle of the channel bottom. As a result of this arcuate configuration of the projections, the thread 7 is centered as it passes through the yarn guide channel 4. In addition, the compressed air flowing out of the yarn channel 4 experiences corresponding deflections. In the embodiment according to FIG. 6, in which only the channel bottom serving as the yarn guiding region is shown, the rounded ribs serving as projections alternately incline to the right and to the left as viewed in plan view of the yarn 7. As a result, the running yarn 7 experiences executives alternately to the right and left as it runs over the successive projections 12. Likewise, the compressed air flowing through the yarn channel 4 is deflected.
Beim Ausführungsbeispiel der Fig. 7 ist der Deckblock 3 an der der Blasdüse 5 gegenüberliegenden Seite mit einer in Richtung der Kanalachse verlaufenden, in die Mitte des Düsenstrahles ragenden Strömungsteiler 13 versehen. Dieser Strömungsteiler teilt den aus der Blasdüse 5 austretenden Druckluftstrahl in zwei gegenläufig rotierende Wirbel.In the exemplary embodiment in FIG. 7, the cover block 3 is provided on the side opposite the blowing nozzle 5 with a flow divider 13 extending in the direction of the channel axis and projecting into the center of the nozzle jet. This flow divider divides the compressed air jet emerging from the blowing nozzle 5 into two counter-rotating vortices.
Dabei sind die Wandungen des Strömungsteilers 13 und die sich anschließenden Kanalwandungen des Garnkanals 4 dem Verlauf dieser Wirbel folgend abgerundet ausgebildet. Hierdurch wird erreicht, daß die über die Blasdüse 5 eingeblase Druckluft entlang den Kanalwandungen zum Boden des Garnkanals 4 zurückgeführt wird, wo sie das zwischen den Vorsprüngen freiliegende durchlaufende Garn 7 gut von unten erfassen kann.The walls of the flow divider 13 and the adjoining channel walls of the yarn channel 4 are rounded, following the course of these eddies. This ensures that the compressed air blown in via the blowing nozzle 5 is returned along the channel walls to the bottom of the yarn channel 4, where it can easily grasp the continuous yarn 7 exposed between the projections from below.
Abweichend von den in der Zeichnung dargestellten und oben beschriebenen Ausführungsbeispielen ist die Erfindung auch für Garnführungskanäle ohne Blasdüse oder mit andersartig ausgebildeten Garnbehandlungseinrichtungen geeignet, und zwar überall dort, wo die oben erläuterten Wandhafteffekte vermieden werden sollen. Deviating from the exemplary embodiments shown in the drawing and described above, the invention is also suitable for yarn guide channels without a blowing nozzle or with differently designed yarn treatment devices, specifically wherever the wall adhesion effects explained above are to be avoided.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2002349330A AU2002349330A1 (en) | 2001-10-15 | 2002-10-04 | Yarn treatment device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001150357 DE10150357A1 (en) | 2001-10-15 | 2001-10-15 | Unit to texturize filament yarns, by compressed air, has projections in the yarn channel to keep the moving yarn at a small gap from the channel wall to prevent sticking |
| DE10150357.1 | 2001-10-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003033788A2 true WO2003033788A2 (en) | 2003-04-24 |
| WO2003033788A3 WO2003033788A3 (en) | 2003-09-25 |
Family
ID=7702269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2002/011175 Ceased WO2003033788A2 (en) | 2001-10-15 | 2002-10-04 | Yarn treatment device |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2002349330A1 (en) |
| DE (1) | DE10150357A1 (en) |
| WO (1) | WO2003033788A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010534284A (en) * | 2007-07-25 | 2010-11-04 | エーリコン テクスタイル コンポーネンツ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Multifilament yarn processing equipment |
| CN115003869A (en) * | 2020-01-31 | 2022-09-02 | 京瓷株式会社 | Spinning Nozzles and Spinning Devices |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4069565A (en) * | 1974-11-28 | 1978-01-24 | Toray Industries, Inc. | Process and apparatus for producing textured multifilament yarn |
| JPS5212362A (en) * | 1975-07-18 | 1977-01-29 | Toray Industries | Fluid treatment apparatus |
| US3978558A (en) * | 1976-01-12 | 1976-09-07 | J. P. Stevens & Co., Inc. | Air jet yarn entanglement |
| SU1051140A1 (en) * | 1982-02-12 | 1983-10-30 | Московский Ордена Трудового Красного Знамени Текстильный Институт Им.А.Н.Косыгина | Device for imparting false twist to yarn |
| CH674528A5 (en) * | 1987-09-23 | 1990-06-15 | Heberlein & Co Ag | |
| DE4410571A1 (en) * | 1994-03-26 | 1995-10-19 | Inst Textil & Faserforschung | Method and device for testing interlaced filament yarns |
| DE19546784C2 (en) * | 1995-12-14 | 1999-08-26 | Inventa Ag | Device for the relaxing heat treatment of filament yarns made of synthetic polymers |
| DE19700817C2 (en) * | 1996-01-12 | 1999-02-11 | Heberlein Fasertech Ag | Process and intermingling nozzle for the production of spin-textured filament yarns |
| GB9814476D0 (en) * | 1998-07-04 | 1998-09-02 | Fibreguide Ltd | Yarn treatment jet |
-
2001
- 2001-10-15 DE DE2001150357 patent/DE10150357A1/en not_active Withdrawn
-
2002
- 2002-10-04 WO PCT/EP2002/011175 patent/WO2003033788A2/en not_active Ceased
- 2002-10-04 AU AU2002349330A patent/AU2002349330A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010534284A (en) * | 2007-07-25 | 2010-11-04 | エーリコン テクスタイル コンポーネンツ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Multifilament yarn processing equipment |
| CN115003869A (en) * | 2020-01-31 | 2022-09-02 | 京瓷株式会社 | Spinning Nozzles and Spinning Devices |
| CN115003869B (en) * | 2020-01-31 | 2023-05-12 | 京瓷株式会社 | Spinning nozzle and spinning device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2003033788A3 (en) | 2003-09-25 |
| AU2002349330A1 (en) | 2003-04-28 |
| DE10150357A1 (en) | 2003-04-17 |
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