EP1563130B1 - Air jet spinning device - Google Patents

Air jet spinning device Download PDF

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Publication number
EP1563130B1
EP1563130B1 EP03750686A EP03750686A EP1563130B1 EP 1563130 B1 EP1563130 B1 EP 1563130B1 EP 03750686 A EP03750686 A EP 03750686A EP 03750686 A EP03750686 A EP 03750686A EP 1563130 B1 EP1563130 B1 EP 1563130B1
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EP
European Patent Office
Prior art keywords
compressed air
nozzle
air
arrangement according
staple fibre
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EP03750686A
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German (de)
French (fr)
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EP1563130A1 (en
Inventor
Peter Schweier
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP1563130A1 publication Critical patent/EP1563130A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means

Definitions

  • the invention relates to an air jet spinning device for producing a spun yarn from a staple fiber strand which passes through a swirl chamber into which at least one compressed air channel having a nozzle-like orifice is formed, which is arranged as a nozzle slot arranged in a nozzle body, in a radial direction to the direction of the staple fiber strand radial plane, which is completed by an end face of a cover to the compressed air channel.
  • An air jet spinning device of this type is characterized by the DE 37 32 708 A1 State of the art.
  • two variants are disclosed with regard to the position of compressed air channels.
  • one variant which is assumed in the preamble of the present patent application, there are a plurality of compressed air channels in a direction radial to the direction of the staple fiber strand.
  • the compressed air impinging on the staple fiber composite must then be deflected abruptly, it being more or less left to chance, whether the air flow in or against the direction of travel.
  • the compressed air channels in the direction of the staple fiber strand are inclined by the fact that the nozzle slots are located in conical surfaces and are covered by associated conical surfaces.
  • there is a risk of lack of sealing since the associated conical surfaces are never free of tolerances.
  • the compressed air channels are drilled in non-generic air jet spinning devices.
  • the aforementioned air jet spinning device has the advantage of a very simple production, since in a nozzle body in a very simple manner with very high accuracy nozzle slots generated by milling can be subsequently covered by a contact surface and thereby completed to compressed air channels. Since such compressed air channels are exposed before assembly, they can be checked in a simple manner with respect to their accuracy and optionally reworked. During this check also faulty cuts can be sorted out.
  • the production of such nozzle slots is not limited to the milling, but can for example also be done by a stamping process.
  • the invention is based on the object for an air jet spinning device to produce the required air pressure channels in principle as in the aforementioned prior art, but at the same time to ensure that with good sealing at the same time a flow component is directed in the running direction of the fiber structure.
  • the object is achieved in that the cover in direct connection to the mouth has an inclined in the running direction of the staple fiber strand inclined Heilumlenkuring.
  • nozzle slots which extend in a radial plane to the direction of the staple fiber strand
  • the end face of the cover and its associated surface of the nozzle body may each be a flat surface, so that there are no sealing problems.
  • compressed air ducts designed according to the invention can be used advantageously in air jet spinning devices which, for example, correspond to the EP 12 17 109 A2 are designed.
  • the air deflection surface is advantageously designed as a conical annular surface surrounding the staple fiber structure. In this way, the Heilumlenk the same particularly easy to produce. It is advantageous if a plurality of orifices is directed tangentially against the annular surface. This not only leads to a good rotation distribution for the spun yarn, but also has the advantage of an extended deflection path for the compressed air, since it is initially directed to the air-deflecting surface with a component in the circumferential direction of the annular surface.
  • the ring itself can be very flat and narrow. So it has been shown that it is sufficient if the taper of the annular surface relative to the radial plane between 10 ° and 20 °. It has also been found that the length of the Lucasumlenk Chemistry can be in the order of the width of the nozzle slots.
  • the FIG. 1 shows an air jet spinning device with which a supplied through a feed channel 1 loose staple fiber strand 2 in a swirl chamber 3 is given a rotation, so that a spun yarn 4 is formed, which is withdrawn through a yarn withdrawal channel 5.
  • the staple fiber strand 2 may come from a drafting or other drafting unit.
  • a fluid device generates in the vortex chamber 3 by blowing compressed air through tangentially into the vortex chamber 3 opening compressed air channels 6 a vortex flow.
  • the emerging from the mouths 7 of the compressed air channels 6 compressed air is discharged through an exhaust duct 8, wherein this has a arranged around the yarn withdrawal channel 5 annular cross-section about a spindle-shaped stationary member 9 around.
  • an edge 11 of a fiber guide surface 12 is arranged as a swirl barrier, which is arranged eccentrically to the yarn withdrawal channel 5 in the region of its inlet opening 13.
  • the fibers to be spun are held, on the one hand, in the staple fiber structure 2 and thus guided by the outlet opening 10 of the feed channel 1 into the yarn withdrawal channel 5 substantially without any rotation.
  • the fibers are exposed to the effect of the turbulent flow, by which they or at least their end regions are driven radially away from the inlet opening 13 of the yarn withdrawal channel 5.
  • the threads 4 produced by the described method also show a core of fibers or fiber regions extending essentially in the thread longitudinal direction without significant rotation and an outer region in which the fibers or fiber regions are rotated around the core.
  • this thread construction is achieved by leading ends of fibers, in particular those whose trailing regions are still held upstream in the feed channel 1, substantially directly into the yarn withdrawal channel 5, but that trailing fiber regions, in particular if they no longer be held in the input area of the feed channel 1, pulled by the vortex formation from the staple fiber strand 2 and then rotated about the resulting thread 4.
  • fibers are involved at the same time both in the resulting thread 4, whereby they are pulled through the thread withdrawal channel 5, as well as the vortex flow, centrifugal, so from the inlet opening 13 of the thread withdrawal channel 5 away, accelerated and withdrawn into the exhaust duct 8 ,
  • the drawn by the vortex flow from the staple fiber strand 2 fiber regions form a opening into the inlet opening 13 of the yarn withdrawal channel 5 fiber vortex whose longer portions spiral around the outside of the spindle-shaped member 9 and in this spiral against the force of flow in the exhaust duct 8 against the inlet port 13th the thread withdrawal channel 5 are pulled.
  • FIG. 1 addition of the FIGS. 2, 3 and 4
  • the compressed air channels 6 will be described in more detail below.
  • compressed air channels 6 there are four compressed air channels 6 per air jet spinning device, which are each provided with orifices 7 and, as best of all FIG. 2 seen, are directed tangentially into the vortex chamber 3.
  • These compressed air channels 6 are in accordance FIGS. 1 and 2 as nozzle slots 15 incorporated into a nozzle body 14 and according to FIGS. 1 . 3 and 4 completed by an end face 16 of a cover 17 to the compressed air channels 6.
  • the nozzle slots 15 extend in a direction of travel A of the staple fiber strand 2 radial plane E, see FIG. 1 ,
  • a radially surrounding the nozzle body 14 annulus 18 is connected in a manner not shown to a compressed air source. About incorporated into the outer contour axial recesses 19 of the nozzle body 14, the compressed air then passes from the annular space 18 to the individual compressed air channels 6. To the outside, the annular space 18 is sealed by a wall of a housing 20.
  • the cover 17, in direct connection with the orifices 7, has an inclined air deflection surface 21 inclined in the running direction A of the staple fiber structure 2.
  • the nozzle slots 15 can be made very simply by lying in the radial plane E, the compressed air emerging from the orifices 7 is redirected by the air deflection surface 21 in the direction A of the fiber structure 2.
  • the Luftumlenk nature 21 is designed as a conical annular surface 22 which surrounds the staple fiber strand 2 and is directed against a plurality of mouths 7 tangentially.
  • the conicity ⁇ of the annular surface 22 relative to the radial plane E is relatively low and is in the range between 10 ° and 20 °.
  • the length L of Lucasumlenk Chemistry 21 is in the order of the width B of the nozzle slots 15th

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die Erfindung betrifft eine Luftdüsenspinnvorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserverband, der eine Wirbelkammer durchläuft, in welche wenigstens ein eine düsenartige Mündung aufweisender Druckluftkanal mündet, der als in einem Düsenkörper angeordneter, in einer zur Laufrichtung des Stapelfaserverbandes radialen Ebene liegender Düsenschlitz ausgebildet ist, der durch eine Stirnfläche einer Abdeckung zu dem Druckluftkanal vervollständigt ist.The invention relates to an air jet spinning device for producing a spun yarn from a staple fiber strand which passes through a swirl chamber into which at least one compressed air channel having a nozzle-like orifice is formed, which is arranged as a nozzle slot arranged in a nozzle body, in a radial direction to the direction of the staple fiber strand radial plane, which is completed by an end face of a cover to the compressed air channel.

Eine Luftdüsenspinnvorrichtung dieser Art ist durch die DE 37 32 708 A1 Stand der Technik. In dieser Druckschrift sind hinsichtlich der Lage von Druckluftkanälen zwei Varianten offenbart. Bei der einen Variante, von welcher im Oberbegriff der vorliegenden Patentanmeldung ausgegangen wird, liegen mehrere Druckluftkanäle in einer zur Laufrichtung des Stapelfaserverbandes radialen Ebene. Die auf den Stapelfaserverband auftreffende Druckluft muss dann abrupt umgelenkt werden, wobei es mehr oder weniger dem Zufall überlassen ist, ob die Luftströmung in oder entgegen der Laufrichtung geht. Bei der anderen Variante sind die Druckluftkanäle in Laufrichtung des Stapelfaserverbandes dadurch geneigt, dass die Düsenschlitze sich in Kegelflächen befinden und durch zugeordnete Kegelflächen abgedeckt werden. Hier besteht die Gefahr mangelnder Abdichtung, da die einander zugeordneten Kegelflächen nie frei von Toleranzen sind.An air jet spinning device of this type is characterized by the DE 37 32 708 A1 State of the art. In this document, two variants are disclosed with regard to the position of compressed air channels. In one variant, which is assumed in the preamble of the present patent application, there are a plurality of compressed air channels in a direction radial to the direction of the staple fiber strand. The compressed air impinging on the staple fiber composite must then be deflected abruptly, it being more or less left to chance, whether the air flow in or against the direction of travel. In the other variant, the compressed air channels in the direction of the staple fiber strand are inclined by the fact that the nozzle slots are located in conical surfaces and are covered by associated conical surfaces. Here there is a risk of lack of sealing, since the associated conical surfaces are never free of tolerances.

Üblicherweise werden bei nicht gattungsgemäßen Luftdüsenspinnvorrichtungen die Druckluftkanäle gebohrt. Gegenüber dieser Ausführung hat die eingangs erwähnte Luftdüsenspinnvorrichtung den Vorteil einer sehr einfachen Herstellung, da in einem Düsenkörper in sehr einfacher Weise mit sehr hoher Genauigkeit Düsenschlitze durch Fräsen erzeugt werden können, die anschließend durch eine Anlagefläche abgedeckt und dadurch zu Druckluftkanälen vervollständigt werden. Da derartige Druckluftkanäle vor dem Zusammenbau freiliegen, können sie in einfacher Weise bezüglich ihrer Genauigkeit überprüft und gegebenenfalls nachgearbeitet werden. Bei dieser Überprüfung können auch fehlerhafte Teilstücke aussortiert werden. Das Herstellen solcher Düsenschlitze ist aber nicht auf das Fräsen beschränkt, sondern kann beispielsweise auch durch einen Prägevorgang erfolgen.Usually, the compressed air channels are drilled in non-generic air jet spinning devices. Compared to this embodiment, the aforementioned air jet spinning device has the advantage of a very simple production, since in a nozzle body in a very simple manner with very high accuracy nozzle slots generated by milling can be subsequently covered by a contact surface and thereby completed to compressed air channels. Since such compressed air channels are exposed before assembly, they can be checked in a simple manner with respect to their accuracy and optionally reworked. During this check also faulty cuts can be sorted out. However, the production of such nozzle slots is not limited to the milling, but can for example also be done by a stamping process.

Der Erfindung liegt die Aufgabe zu Grunde, für eine Luftdüsenspinnvorrichtung die benötigten Luftdruckkanäle im Grundsatz wie beim eingangs genannten Stand der Technik herzustellen, jedoch gleichzeitig dafür zu sorgen, dass bei guter Abdichtung zugleich auch eine Strömungskomponente in Laufrichtung des Faserverbandes gerichtet ist.The invention is based on the object for an air jet spinning device to produce the required air pressure channels in principle as in the aforementioned prior art, but at the same time to ensure that with good sealing at the same time a flow component is directed in the running direction of the fiber structure.

Die Aufgabe wird dadurch gelöst, dass die Abdeckung in unmittelbarem Anschluss an die Mündung eine in Laufrichtung des Stapelfaserverbandes geneigte schräge Luftumlenkfläche aufweist.The object is achieved in that the cover in direct connection to the mouth has an inclined in the running direction of the staple fiber strand inclined Luftumlenkfläche.

Da von Düsenschlitzen ausgegangen wird, die in einer radialen Ebene zur Laufrichtung des Stapelfaserverbandes verlaufen, kann die Stirnfläche der Abdeckung und die ihr zugeordnete Fläche des Düsenkörpers jeweils eine plane Fläche sein, so dass es keine Dichtungsprobleme gibt. Zusätzlich ist dafür Sorge getragen, dass die Druckluft im Anschluss an die Mündung des wenigstens einen Druckluftkanales in Laufrichtung des Stapelfaserverbandes umgelenkt wird, so dass eindeutige Strömungsverhältnisse vorherrschen.Since it is assumed that nozzle slots, which extend in a radial plane to the direction of the staple fiber strand, the end face of the cover and its associated surface of the nozzle body may each be a flat surface, so that there are no sealing problems. In addition, care is taken that the compressed air is deflected following the mouth of the at least one compressed air channel in the direction of the staple fiber strand, so that clear flow conditions prevail.

Die erfindungsgemäß ausgebildeten Druckluftkanäle lassen sich vorteilhaft bei Luftdüsenspinnvorrichtungen anwenden, die beispielsweise entsprechend der EP 12 17 109 A2 gestaltet sind.The compressed air ducts designed according to the invention can be used advantageously in air jet spinning devices which, for example, correspond to the EP 12 17 109 A2 are designed.

Vorteilhaft ist die Luftumlenkfläche als den Stapelfaserverband umgebende konische Ringfläche ausgebildet. Auf diese Weise lässt sich die Luftumlenkfläche besonders einfach herstellen. Dabei ist es günstig, wenn eine Mehrzahl von Mündungen tangential gegen die Ringfläche gerichtet ist. Dies führt nicht nur zu einer guten Drehungserteilung für den ersponnenen Faden, sondern hat auch den Vorteil eines verlängerten Umlenkweges für die Druckluft, da diese an der Luft-umlenkfläche zunächst mit einer Komponente in Umfangsrichtung der Ringfläche gerichtet ist.The air deflection surface is advantageously designed as a conical annular surface surrounding the staple fiber structure. In this way, the Luftumlenkfläche particularly easy to produce. It is advantageous if a plurality of orifices is directed tangentially against the annular surface. This not only leads to a good rotation distribution for the spun yarn, but also has the advantage of an extended deflection path for the compressed air, since it is initially directed to the air-deflecting surface with a component in the circumferential direction of the annular surface.

Die Ringfläche selbst kann sehr flach und schmal sein. So hat es sich gezeigt, dass es genügt, wenn die Konizität der Ringfläche gegenüber der radialen Ebene zwischen 10° und 20° liegt. Es hat sich ferner gezeigt, dass die Länge der Luftumlenkfläche in der Größenordnung der Breite der Düsenschlitze liegen kann.The ring itself can be very flat and narrow. So it has been shown that it is sufficient if the taper of the annular surface relative to the radial plane between 10 ° and 20 °. It has also been found that the length of the Luftumlenkfläche can be in the order of the width of the nozzle slots.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels.Further advantages and features of the invention will become apparent from the following description of an embodiment.

Es zeigen:

  • Figur 1 in etwa zehnfacher Vegrößerung einen Axialschnitt durch eine erfindungsgemäße Luftdüsenspinnvorrichtung,
  • Figur 2 in gegenüber Figur 1 verkleinerter, jedoch gegenüber der Originalgröße dennoch vergrößerter Darstellung einen Schnitt längs der Schnittfläche II-II der Figur 1 durch einen Düsenkörper,
  • Figur 3 in einem der Figur 2 entsprechenden Größenverhältnis eine Ansicht in Richtung des Pfeiles III der Figur 1 auf eine erfindungsgemäße Abdeckung,
  • Figur 4 einen Schnitt durch diese Abdeckung längs der Schnittfläche IV-IV der Figur 3.
Show it:
  • FIG. 1 in approximately ten times the size of an axial section through an air jet spinning device according to the invention,
  • FIG. 2 in opposite FIG. 1 reduced, but compared to the original size still enlarged view a section along the cutting surface II-II of FIG. 1 through a nozzle body,
  • FIG. 3 in one of the FIG. 2 corresponding size ratio a view in the direction of arrow III of FIG. 1 to a cover according to the invention,
  • FIG. 4 a section through this cover along the cut surface IV-IV of FIG. 3 ,

Die Figur 1 zeigt eine Luftdüsenspinnvorrichtung, mit der einem durch einen Zuführkanal 1 zugeführten losen Stapelfaserverband 2 in einer Wirbelkammer 3 eine Drehung erteilt wird, so dass ein gesponnener Faden 4 entsteht, der durch einen Fadenabzugskanal 5 abgezogen wird. Der Stapelfaserverband 2 kann von einem Streckwerk oder einem anderen Verzugsaggregat kommen. Eine Fluideinrichtung erzeugt in der Wirbelkammer 3 durch Einblasen von Druckluft durch tangential in die Wirbelkammer 3 mündende Druckluftkanäle 6 eine Wirbelströmung. Die aus den Mündungen 7 der Druckluftkanäle 6 austretende Druckluft wird durch einen Abluftkanal 8 abgeführt, wobei dieser einen um den Fadenabzugskanal 5 angeordneten ringförmigen Querschnitt um ein spindelförmiges stationäres Bauteil 9 herum aufweist.The FIG. 1 shows an air jet spinning device with which a supplied through a feed channel 1 loose staple fiber strand 2 in a swirl chamber 3 is given a rotation, so that a spun yarn 4 is formed, which is withdrawn through a yarn withdrawal channel 5. The staple fiber strand 2 may come from a drafting or other drafting unit. A fluid device generates in the vortex chamber 3 by blowing compressed air through tangentially into the vortex chamber 3 opening compressed air channels 6 a vortex flow. The emerging from the mouths 7 of the compressed air channels 6 compressed air is discharged through an exhaust duct 8, wherein this has a arranged around the yarn withdrawal channel 5 annular cross-section about a spindle-shaped stationary member 9 around.

Nach der Auslassöffnung 10 des Zuführkanals 1 ist als Drallsperre eine Kante 11 einer Faserführungsfläche 12 angeordnet, die exzentrisch zum Fadenabzugskanal 5 im Bereich von dessen Einlassöffnung 13 angeordnet ist.After the outlet opening 10 of the feed channel 1, an edge 11 of a fiber guide surface 12 is arranged as a swirl barrier, which is arranged eccentrically to the yarn withdrawal channel 5 in the region of its inlet opening 13.

In der Luftdüsenspinnvorrichtung werden die zu verspinnenden Fasern einerseits im Stapelfaserverband 2 gehalten und so von der Auslassöffnung 10 des Zuführkanals 1 im Wesentlichen ohne Drehungserteilung in den Fadenabzugskanal 5 geführt. Andererseits sind die Fasern aber im Bereich zwischen Zuführkanal 1 und Fadenabzugskanal 5 der Wirkung der Wirbelströmung ausgesetzt, durch die sie oder mindestens ihre Endbereiche von der Einlassöffnung 13 des Fadenabzugskanals 5 radial hinweg getrieben werden. Die mit dem beschriebenen Verfahren hergestellten Fäden 4 zeigen denn auch einen Kern von im Wesentlichen in Fadenlängsrichtung verlaufenden Fasern oder Faserbereichen ohne wesentliche Drehung und einen äußeren Bereich, in welchem die Fasern oder Faserbereiche um den Kern herum gedreht sind.In the air jet spinning device, the fibers to be spun are held, on the one hand, in the staple fiber structure 2 and thus guided by the outlet opening 10 of the feed channel 1 into the yarn withdrawal channel 5 substantially without any rotation. On the other hand, in the region between the feed channel 1 and the thread withdrawal channel 5, the fibers are exposed to the effect of the turbulent flow, by which they or at least their end regions are driven radially away from the inlet opening 13 of the yarn withdrawal channel 5. The threads 4 produced by the described method also show a core of fibers or fiber regions extending essentially in the thread longitudinal direction without significant rotation and an outer region in which the fibers or fiber regions are rotated around the core.

Dieser Fadenaufbau kommt nach einer modellhaften Erklärung dadurch zu Stande, dass vorlaufende Enden von Fasern, insbesondere solche, deren nachlaufende Bereiche noch stromaufwärts im Zuführkanal 1 gehalten werden, im Wesentlichen direkt in den Fadenabzugs-kanal 5 gelangen, dass aber nachlaufende Faserbereiche, insbesondere wenn sie im Ein-gangsbereich des Zuführkanals 1 nicht mehr gehalten werden, durch die Wirbelbildung aus dem Stapelfaserverband 2 gezogen und dann um den entstehenden Faden 4 gedreht werden.According to a model explanation, this thread construction is achieved by leading ends of fibers, in particular those whose trailing regions are still held upstream in the feed channel 1, substantially directly into the yarn withdrawal channel 5, but that trailing fiber regions, in particular if they no longer be held in the input area of the feed channel 1, pulled by the vortex formation from the staple fiber strand 2 and then rotated about the resulting thread 4.

Jedenfalls sind Fasern zu einem gleichen Zeitpunkt sowohl im entstehenden Faden 4 eingebunden, wodurch sie durch den Fadenabzugskanal 5 gezogen werden, als auch der Wirbelströmung ausgesetzt, die sie zentrifugal, also von der Einlassöffnung 13 des Fadenabzugskanals 5 hinweg, beschleunigt und in den Abluftkanal 8 abzieht. Die durch die Wirbelströmung aus dem Stapelfaserverband 2 gezogenen Faserbereiche bilden einen in die Einlassöffnung 13 des Fadenabzugskanals 5 mündenden Faserwirbel, dessen längere Anteile sich spiralartig außen um das spindelförmige Bauteil 9 winden und in dieser Spirale entgegen der Kraft der Strömung im Abluftkanal 8 gegen die Einlassöffnung 13 des Fadenabzugskanals 5 gezogen werden.In any case, fibers are involved at the same time both in the resulting thread 4, whereby they are pulled through the thread withdrawal channel 5, as well as the vortex flow, centrifugal, so from the inlet opening 13 of the thread withdrawal channel 5 away, accelerated and withdrawn into the exhaust duct 8 , The drawn by the vortex flow from the staple fiber strand 2 fiber regions form a opening into the inlet opening 13 of the yarn withdrawal channel 5 fiber vortex whose longer portions spiral around the outside of the spindle-shaped member 9 and in this spiral against the force of flow in the exhaust duct 8 against the inlet port 13th the thread withdrawal channel 5 are pulled.

Unter zur Figur 1 ergänzender Hinzunahme der Figuren 2, 3 und 4 werden nachfolgend die Druckluftkanäle 6 näher beschrieben.Under to FIG. 1 addition of the FIGS. 2, 3 and 4 The compressed air channels 6 will be described in more detail below.

Gemäß dem in den genannten Figuren dargestellten Ausführungsbeispiel gibt es pro Luftdüsenspinnvorrichtung insgesamt vier Druckluftkanäle 6, die jeweils mit Mündungen 7 versehen sind und, wie am besten aus Figur 2 ersichtlich, tangential in die Wirbelkammer 3 gerichtet sind. Diese Druckluftkanäle 6 sind gemäß Figuren 1 und 2 als Düsenschlitze 15 in einen Düsenkörper 14 eingearbeitet und gemäß Figuren 1,3 und 4 durch eine Stirnfläche 16 einer Abdeckung 17 zu den Druckluftkanälen 6 vervollständigt. Die Düsenschlitze 15 verlaufen in einer zur Laufrichtung A des Stapelfaserverbandes 2 radialen Ebene E, siehe hierzu Figur 1.According to the embodiment shown in the aforementioned figures, there are four compressed air channels 6 per air jet spinning device, which are each provided with orifices 7 and, as best of all FIG. 2 seen, are directed tangentially into the vortex chamber 3. These compressed air channels 6 are in accordance FIGS. 1 and 2 as nozzle slots 15 incorporated into a nozzle body 14 and according to FIGS. 1 . 3 and 4 completed by an end face 16 of a cover 17 to the compressed air channels 6. The nozzle slots 15 extend in a direction of travel A of the staple fiber strand 2 radial plane E, see FIG. 1 ,

Ein den Düsenkörper 14 radial umgebender Ringraum 18 ist in nicht dargestellter Weise an eine Druckluftquelle angeschlossen. Über in die Außenkontur eingearbeitete axiale Aussparungen 19 des Düsenkörpers 14 gelangt die Druckluft dann von dem Ringraum 18 zu den einzelnen Druckluftkanälen 6. Nach außen hin ist der Ringraum 18 durch eine Wandung eines Gehäuses 20 abgedichtet.A radially surrounding the nozzle body 14 annulus 18 is connected in a manner not shown to a compressed air source. About incorporated into the outer contour axial recesses 19 of the nozzle body 14, the compressed air then passes from the annular space 18 to the individual compressed air channels 6. To the outside, the annular space 18 is sealed by a wall of a housing 20.

Erfindungsgemäß weist die Abdeckung 17 in unmittelbarem Anschluss an die Mündungen 7 eine in Laufrichtung A des Stapelfaserverbandes 2 geneigte schräge Luftumlenkfläche 21 auf. Obwohl also die Düsenschlitze 15 dadurch, dass sie in der radialen Ebene E liegen, sehr einfach gefertigt werden können, wird die aus den Mündungen 7 austretende Druckluft durch die Luftumlenkfläche 21 in Laufrichtung A des Faserverbandes 2 umgeleitet. Wie ersichtlich, ist die Luftumlenkfläche 21 dabei als konische Ringfläche 22 ausgebildet, die den Stapelfaserverband 2 umgibt und gegen die eine Mehrzahl von Mündungen 7 tangential gerichtet ist.According to the invention, the cover 17, in direct connection with the orifices 7, has an inclined air deflection surface 21 inclined in the running direction A of the staple fiber structure 2. Thus, although the nozzle slots 15 can be made very simply by lying in the radial plane E, the compressed air emerging from the orifices 7 is redirected by the air deflection surface 21 in the direction A of the fiber structure 2. As can be seen, the Luftumlenkfläche 21 is designed as a conical annular surface 22 which surrounds the staple fiber strand 2 and is directed against a plurality of mouths 7 tangentially.

Wie insbesondere aus den Figuren 2 und 4 zu erkennen ist, ist die Konizität α der Ringfläche 22 gegenüber der radialen Ebene E relativ gering und liegt im Bereich zwischen 10° und 20°. Die Länge L der Luftumlenkfläche 21 liegt in der Größenordnung der Breite B der Düsenschlitze 15.As in particular from the FIGS. 2 and 4 can be seen, the conicity α of the annular surface 22 relative to the radial plane E is relatively low and is in the range between 10 ° and 20 °. The length L of Luftumlenkfläche 21 is in the order of the width B of the nozzle slots 15th

Claims (5)

  1. Airjet spinning arrangement for producing a spun thread (4) from a staple fibre strand (2) which travels through a vortex chamber (3), into which runs at least one air supply channel (6) for compressed air having a nozzle-like mouthpiece (7), said compressed air supply channel taking the form of a nozzle groove (15) arranged in a nozzle body and lying in a radial plane in relation to the travel direction of the staple fibre strand, said nozzle groove (15) completing the air supply channel by means of a front surface of a cover (17), characterized in that the cover (17) comprises a sloped air-deflecting surface (21) inclined in the running direction (A) of the staple fibre strand (2) directly adjacent to the mouthpiece (7).
  2. Airjet spinning arrangement according to claim 1, characterized in that the air deflecting surface (21) is designed as a conical ring surface (22) surrounding the staple fibre strand (2).
  3. Airjet spinning arrangement according to claim 2, characterized in that a plurality of mouthpieces (7) are aligned tangentially toward the ring surface (22).
  4. Airjet spinning arrangement according to claim 2 or 3, characterized in that the conicity (α) of the ring surface (22) in relation to the radial plane (E) measures between 10° and 20°.
  5. Airjet spinning arrangement according to anyone of the claims 1 to 4, characterized in that the length (L) of the air-deflecting surface (21) lies in the order of magnitude of the width (8) of the nozzle grooves (15).
EP03750686A 2002-11-22 2003-10-04 Air jet spinning device Expired - Lifetime EP1563130B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10256344 2002-11-22
DE2002156344 DE10256344A1 (en) 2002-11-22 2002-11-22 Air-jet spinning device
PCT/EP2003/010994 WO2004048655A1 (en) 2002-11-22 2003-10-04 Air jet spinning device

Publications (2)

Publication Number Publication Date
EP1563130A1 EP1563130A1 (en) 2005-08-17
EP1563130B1 true EP1563130B1 (en) 2008-07-16

Family

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Application Number Title Priority Date Filing Date
EP03750686A Expired - Lifetime EP1563130B1 (en) 2002-11-22 2003-10-04 Air jet spinning device

Country Status (6)

Country Link
EP (1) EP1563130B1 (en)
JP (1) JP2006507418A (en)
CN (1) CN1714180A (en)
AU (1) AU2003268916A1 (en)
DE (2) DE10256344A1 (en)
WO (1) WO2004048655A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012127009A (en) * 2010-12-13 2012-07-05 Murata Mach Ltd Air spinning device and spinning machine provided with air spinning device
US9719884B2 (en) * 2012-12-20 2017-08-01 Robert Bosch Gmbh Intake gas sensor for internal combustion engine
CH712409A1 (en) * 2016-04-29 2017-10-31 Rieter Ag Maschf Air-jet spinning machine and method for producing a yarn.
DE102019111035A1 (en) * 2019-04-29 2020-10-29 Saurer Intelligent Technology AG Spinning unit, air-jet spinning machine and method for producing a yarn

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732708A1 (en) * 1987-01-15 1988-07-28 Stahlecker Fritz AIR NOZZLE FOR PNEUMATIC SPIRAL SPINNING WITH A THREAD CHANNEL MADE OF AT LEAST TWO SECTIONS
JP2708000B2 (en) * 1995-02-10 1998-02-04 村田機械株式会社 Spinning equipment
JP2002155435A (en) * 2000-11-15 2002-05-31 Murata Mach Ltd Piecing method and apparatus therefor in spinning machine
EP1217109A3 (en) * 2000-12-22 2003-04-02 Maschinenfabrik Rieter Ag Spinning device

Also Published As

Publication number Publication date
DE50310171D1 (en) 2008-08-28
AU2003268916A1 (en) 2004-06-18
JP2006507418A (en) 2006-03-02
CN1714180A (en) 2005-12-28
EP1563130A1 (en) 2005-08-17
WO2004048655A1 (en) 2004-06-10
DE10256344A1 (en) 2004-06-03

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