WO2004048655A1 - Air jet spinning device - Google Patents

Air jet spinning device Download PDF

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Publication number
WO2004048655A1
WO2004048655A1 PCT/EP2003/010994 EP0310994W WO2004048655A1 WO 2004048655 A1 WO2004048655 A1 WO 2004048655A1 EP 0310994 W EP0310994 W EP 0310994W WO 2004048655 A1 WO2004048655 A1 WO 2004048655A1
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WO
WIPO (PCT)
Prior art keywords
air
nozzle
staple fiber
spinning device
compressed air
Prior art date
Application number
PCT/EP2003/010994
Other languages
German (de)
French (fr)
Inventor
Peter Schweier
Original Assignee
Maschinenfabrik Rieter Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Rieter Ag filed Critical Maschinenfabrik Rieter Ag
Priority to DE50310171T priority Critical patent/DE50310171D1/en
Priority to EP03750686A priority patent/EP1563130B1/en
Priority to AU2003268916A priority patent/AU2003268916A1/en
Priority to JP2004554274A priority patent/JP2006507418A/en
Publication of WO2004048655A1 publication Critical patent/WO2004048655A1/en

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Classifications

    • 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 nozzle spinning device for producing a spun thread from a staple fiber structure, which passes through a swirl chamber into which at least one compressed air channel with a nozzle-like opening opens, which is designed as a nozzle slot arranged in a nozzle body and lying in a plane radial to the direction of travel of the staple fiber structure. which is completed by an end face of a cover to the compressed air channel.
  • An air nozzle spinning device of this type is known from DE 37 32 708 A1.
  • two variants are disclosed with regard to the location of compressed air channels.
  • several compressed air channels lie in a plane that is radial to the running direction of the staple fiber structure.
  • the compressed air impinging on the stack bevel / belt must then be deflected abruptly, it being more or less left to chance whether the air flow is in the opposite direction or the direction of travel.
  • the compressed air channels are inclined in the running direction of the staple fiber structure in that the nozzle slots are located in conical surfaces and are covered by assigned conical surfaces. There is a risk of insufficient sealing here, since the conical surfaces assigned to one another are never free from tolerances.
  • the compressed air channels are usually drilled in air jet spinning devices of a non-generic type.
  • the air nozzle spinning device mentioned at the outset has the advantage of very simple manufacture, since nozzle slots are produced in a nozzle body in a very simple manner with very high accuracy by milling can be covered, which are then covered by a contact surface and thereby completed to compressed air channels. Since such compressed air ducts are exposed before assembly, their accuracy can be checked in a simple manner and, if necessary, reworked. Faulty sections can also be sorted out during this check.
  • the production of such nozzle slots is not limited to milling, but can also be done, for example, by an embossing process.
  • the invention is based on the object of producing the required air pressure channels for an air nozzle spinning device in principle as in the prior art mentioned above, but at the same time ensuring that at the same time a flow component is directed in the running direction of the fiber structure with a good seal.
  • the cover has an inclined air deflecting surface which is inclined in the running direction of the staple fiber association in the direct connection to the mouth.
  • the end face of the cover and the surface of the nozzle body assigned to it can each be a flat surface, so that there are no sealing problems.
  • care is taken to ensure that the compressed air is deflected in the running direction of the staple fiber structure after the mouth of the at least one compressed air channel, so that clear flow conditions prevail.
  • the compressed air channels designed according to the invention can advantageously be used in air jet spinning devices which are designed, for example, in accordance with EP 12 17 109 A2.
  • the air deflecting surface is advantageously designed as a conical ring surface surrounding the staple fiber structure. In this way, the air deflection surface can be produced particularly easily. It is advantageous if a plurality of orifices are directed tangentially against the ring surface. This not only leads to good rotation for the spun thread, but also has the advantage of an extended deflection path for the compressed air, since this is initially directed at the air deflection surface with a component in the circumferential direction of the ring surface.
  • the ring surface itself can be very flat and narrow. It has been shown that it is sufficient if the conicity of the ring surface with respect to the radial plane is between 10 ° and 20 °. It has also been shown that the length of the air deflecting surface can be of the order of the width of the nozzle slots.
  • FIG. 1 shows an axial section through an air nozzle spinning device according to the invention in approximately ten times magnification
  • FIG. 2 shows a section along section II-II of FIG. 1 through a nozzle body in a representation that is reduced compared to FIG. 1 but nevertheless enlarged compared to the original size
  • FIG. 4 shows a section through this cover along the sectional area IV-IV of FIG. 3.
  • FIG. 1 shows an air nozzle spinning device with which a loose staple fiber dressing 2 fed through a feed duct 1 is given a rotation in a swirl chamber 3, so that a spun thread 4 is produced, which is drawn off through a thread take-off duct 5.
  • the staple fiber dressing 2 can come from a drafting device or another drafting unit.
  • a fluid device generates a swirl flow in the swirl chamber 3 by blowing compressed air through tangential compressed air channels 6 opening into the swirl chamber 3.
  • the compressed air emerging from the mouths 7 of the compressed air channels 6 is discharged through an exhaust air channel 8, which has an annular cross section arranged around the thread take-off channel 5 around a spindle-shaped stationary component 9.
  • an edge 11 of a fiber guide surface 12 is arranged as a twist lock, which is arranged eccentrically to the thread take-off 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 from the outlet opening 10 of the feed channel 1 into the thread take-off channel 5 essentially without giving rotation.
  • the fibers in the area between the feed channel 1 and the thread take-off channel 5 are exposed to the effect of the vortex flow, through which they or at least their end areas are driven radially away from the inlet opening 13 of the thread take-off channel 5.
  • the threads 4 produced with the described method also show a core of fibers or fiber areas running essentially in the longitudinal direction of the thread substantial rotation and an outer region in which the fibers or fiber regions are rotated around the core.
  • this thread structure comes about because leading ends of fibers, in particular those whose trailing areas are still kept upstream in the feed channel 1, essentially reach the thread draw-off channel 5 directly, but trailing fiber areas, especially if they can no longer be held in the entrance area of the feed channel 1, pulled out of the staple fiber structure 2 by the formation of eddies and then rotated around the thread 4 that is formed.
  • fibers are integrated at the same time both in the thread 4 being formed, as a result of which they are drawn through the thread take-off channel 5, and also exposed to the vortex flow, which accelerates them centrifugally, i.e. away from the inlet opening 13 of the thread take-off channel 5, and draws them into the exhaust air channel 8 ,
  • the fiber regions drawn from the staple fiber structure 2 by the vortex flow form a fiber vortex opening into the inlet opening 13 of the thread take-off channel 5, the longer portions of which spiral around the outside of the spindle-shaped component 9 and in this spiral against the force of the flow in the exhaust air channel 8 against the inlet opening 13 of the thread take-off channel 5 are pulled.
  • the compressed air channels 6 are described in more detail below with the addition of FIGS. 2, 3 and 4 to FIG.
  • compressed air channels 6 there are a total of four compressed air channels 6 per air nozzle spinning device, each of which is provided with openings 7 and, as can best be seen from FIG. 2, is directed tangentially into the swirl chamber 3.
  • These compressed air channels 6 are in accordance with FIGS. 1 and 2 as nozzle slots 15 worked into a nozzle body 14 and completed according to FIGS. 1, 3 and 4 by an end face 16 of a cover 17 to the compressed air channels 6.
  • the nozzle slots 15 run in a plane E radial to the running direction A of the staple fiber structure 2, see FIG. 1 for this.
  • An annular space 18 radially surrounding the nozzle body 14 is connected to a compressed air source in a manner not shown.
  • the compressed air then passes from the annular space 18 to the individual compressed air channels 6 via axial recesses 19 of the nozzle body 14 machined into the outer contour.
  • the annular space 18 is sealed to the outside by a wall of a housing 20.
  • the cover 17 has an inclined air deflecting surface 21, which is inclined in the running direction A of the staple fiber structure 2, in direct connection to the orifices 7.
  • the nozzle slots 15 can be manufactured very simply because they lie in the radial plane E, the compressed air emerging from the orifices 7 is redirected through the air deflecting surface 21 in the running direction A of the fiber structure 2.
  • the air deflecting surface 21 is designed as a conical ring surface 22 which surrounds the staple fiber structure 2 and against which a plurality of orifices 7 are directed tangentially.
  • the taper ⁇ of the annular surface 22 with respect to the radial plane E is relatively low and is in the range between 10 ° and 20 °.
  • the length L of the air deflection surface 21 is in the order of the width B of the nozzle slots 15.

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

Abstract

An air jet spinning device for producing a spun thread (4) contains a turbulence chamber (3) through which a staple fiber assembly passes. At least one compressed air channel (6) opens into said turbulence chamber and is provided in the form of a jet slot (15), which is placed in a jet body and lies in a plane that is radial to the running direction of the staple fiber assembly. The jet slot (15) is completed by a face of a covering (17) in order to form said compressed air channel (6). In immediate contact with the opening (7), the covering comprises a slanted air deflecting surface (21), which is sloped in the running direction of the staple fiber assembly and which is preferably provided in the form of a conical annular surface.

Description

Beschreibung Luftdüsenspinnvorrichtunα Description Luftdüsenspinnvorrichtunα
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 nozzle spinning device for producing a spun thread from a staple fiber structure, which passes through a swirl chamber into which at least one compressed air channel with a nozzle-like opening opens, which is designed as a nozzle slot arranged in a nozzle body and lying in a plane radial to the direction of travel of the staple fiber structure. 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 Stapelfaseπ/erband auftreffende Druckluft muss dann abrupt umgelenkt werden, wobei es mehr oder weniger dem Zufall überlassen ist, ob die Luftströmung in o- der 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 nozzle spinning device of this type is known from DE 37 32 708 A1. In this document, two variants are disclosed with regard to the location of compressed air channels. In the one variant, from which the preamble of the present patent application is based, several compressed air channels lie in a plane that is radial to the running direction of the staple fiber structure. The compressed air impinging on the stack bevel / belt must then be deflected abruptly, it being more or less left to chance whether the air flow is in the opposite direction or the direction of travel. In the other variant, the compressed air channels are inclined in the running direction of the staple fiber structure in that the nozzle slots are located in conical surfaces and are covered by assigned conical surfaces. There is a risk of insufficient sealing here, since the conical surfaces assigned to one another are never free from tolerances.
Üblicherweise werden bei nicht gattungsgemäßen Luftdüsenspinnvor- richtungen 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.The compressed air channels are usually drilled in air jet spinning devices of a non-generic type. Compared to this embodiment, the air nozzle spinning device mentioned at the outset has the advantage of very simple manufacture, since nozzle slots are produced in a nozzle body in a very simple manner with very high accuracy by milling can be covered, which are then covered by a contact surface and thereby completed to compressed air channels. Since such compressed air ducts are exposed before assembly, their accuracy can be checked in a simple manner and, if necessary, reworked. Faulty sections can also be sorted out during this check. The production of such nozzle slots is not limited to milling, but can also be done, for example, by an embossing 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 of producing the required air pressure channels for an air nozzle spinning device in principle as in the prior art mentioned above, but at the same time ensuring that at the same time a flow component is directed in the running direction of the fiber structure with a good seal.
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 has an inclined air deflecting surface which is inclined in the running direction of the staple fiber association in the direct connection to the mouth.
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 the nozzle slots run in a radial plane to the running direction of the staple fiber structure, the end face of the cover and the surface of the nozzle body assigned to it can each be a flat surface, so that there are no sealing problems. In addition, care is taken to ensure that the compressed air is deflected in the running direction of the staple fiber structure after the mouth of the at least one compressed air channel, 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. 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 compressed air channels designed according to the invention can advantageously be used in air jet spinning devices which are designed, for example, in accordance with EP 12 17 109 A2. The air deflecting surface is advantageously designed as a conical ring surface surrounding the staple fiber structure. In this way, the air deflection surface can be produced particularly easily. It is advantageous if a plurality of orifices are directed tangentially against the ring surface. This not only leads to good rotation for the spun thread, but also has the advantage of an extended deflection path for the compressed air, since this is initially directed at the air deflection surface with a component in the circumferential direction of the ring 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 surface itself can be very flat and narrow. It has been shown that it is sufficient if the conicity of the ring surface with respect to the radial plane is between 10 ° and 20 °. It has also been shown that the length of the air deflecting surface can be of 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 result from the following description of an exemplary embodiment.
Es zeigen:Show it:
Figur 1 in etwa zehnfacher Vegrößerung einen Axialschnitt durch eine erfindungsgemäße Luftdüsenspinnvorrichtung,FIG. 1 shows an axial section through an air nozzle spinning device according to the invention in approximately ten times magnification,
Figur 2 in gegenüber Figur 1 verkleinerter, jedoch gegenüber der Originalgröße dennoch vergrößerter Darstellung einen Schnitt längs der Schnittfläche ll-ll der Figur 1 durch einen Düsenkörper,FIG. 2 shows a section along section II-II of FIG. 1 through a nozzle body in a representation that is reduced compared to FIG. 1 but nevertheless enlarged compared to the original size,
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 3.3 in a size ratio corresponding to FIG. 2, a view in the direction of arrow III of FIG. 1 onto a cover according to the invention, FIG. 4 shows a section through this cover along the sectional area 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.FIG. 1 shows an air nozzle spinning device with which a loose staple fiber dressing 2 fed through a feed duct 1 is given a rotation in a swirl chamber 3, so that a spun thread 4 is produced, which is drawn off through a thread take-off duct 5. The staple fiber dressing 2 can come from a drafting device or another drafting unit. A fluid device generates a swirl flow in the swirl chamber 3 by blowing compressed air through tangential compressed air channels 6 opening into the swirl chamber 3. The compressed air emerging from the mouths 7 of the compressed air channels 6 is discharged through an exhaust air channel 8, which has an annular cross section arranged around the thread take-off channel 5 around a spindle-shaped stationary component 9.
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 twist lock, which is arranged eccentrically to the thread take-off 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 nozzle spinning device, the fibers to be spun are held on the one hand in the staple fiber structure 2 and thus guided from the outlet opening 10 of the feed channel 1 into the thread take-off channel 5 essentially without giving rotation. On the other hand, the fibers in the area between the feed channel 1 and the thread take-off channel 5 are exposed to the effect of the vortex flow, through which they or at least their end areas are driven radially away from the inlet opening 13 of the thread take-off channel 5. The threads 4 produced with the described method also show a core of fibers or fiber areas running essentially in the longitudinal direction of the thread substantial 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 structure comes about because leading ends of fibers, in particular those whose trailing areas are still kept upstream in the feed channel 1, essentially reach the thread draw-off channel 5 directly, but trailing fiber areas, especially if they can no longer be held in the entrance area of the feed channel 1, pulled out of the staple fiber structure 2 by the formation of eddies and then rotated around the thread 4 that is formed.
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 integrated at the same time both in the thread 4 being formed, as a result of which they are drawn through the thread take-off channel 5, and also exposed to the vortex flow, which accelerates them centrifugally, i.e. away from the inlet opening 13 of the thread take-off channel 5, and draws them into the exhaust air channel 8 , The fiber regions drawn from the staple fiber structure 2 by the vortex flow form a fiber vortex opening into the inlet opening 13 of the thread take-off channel 5, the longer portions of which spiral around the outside of the spindle-shaped component 9 and in this spiral against the force of the flow in the exhaust air channel 8 against the inlet opening 13 of the thread take-off channel 5 are pulled.
Unter zur Figur 1 ergänzender Hinzunahme der Figuren 2, 3 und 4 werden nachfolgend die Druckluftkanäle 6 näher beschrieben.The compressed air channels 6 are described in more detail below with the addition of FIGS. 2, 3 and 4 to FIG.
Gemäß dem in den genannten Figuren dargestellten Ausführungsbeispiel gibt es pro Luftdüsenspinnvorrichtung insgesamt vier Druckluftka- näle 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 exemplary embodiment shown in the figures mentioned, there are a total of four compressed air channels 6 per air nozzle spinning device, each of which is provided with openings 7 and, as can best be seen from FIG. 2, is directed tangentially into the swirl chamber 3. These compressed air channels 6 are in accordance with FIGS. 1 and 2 as nozzle slots 15 worked into a nozzle body 14 and completed according to FIGS. 1, 3 and 4 by an end face 16 of a cover 17 to the compressed air channels 6. The nozzle slots 15 run in a plane E radial to the running direction A of the staple fiber structure 2, see FIG. 1 for this.
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.An annular space 18 radially surrounding the nozzle body 14 is connected to a compressed air source in a manner not shown. The compressed air then passes from the annular space 18 to the individual compressed air channels 6 via axial recesses 19 of the nozzle body 14 machined into the outer contour. The annular space 18 is sealed to the outside 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 has an inclined air deflecting surface 21, which is inclined in the running direction A of the staple fiber structure 2, in direct connection to the orifices 7. Thus, although the nozzle slots 15 can be manufactured very simply because they lie in the radial plane E, the compressed air emerging from the orifices 7 is redirected through the air deflecting surface 21 in the running direction A of the fiber structure 2. As can be seen, the air deflecting surface 21 is designed as a conical ring surface 22 which surrounds the staple fiber structure 2 and against which a plurality of orifices 7 are directed 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 can be seen in particular from FIGS. 2 and 4, the taper α of the annular surface 22 with respect to the radial plane E is relatively low and is in the range between 10 ° and 20 °. The length L of the air deflection surface 21 is in the order of the width B of the nozzle slots 15.

Claims

Patentansprüche claims
1. 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, dadurch gekennzeichnet, dass die Abdeckung (17) in unmittelbarem Anschluss an die Mündung (7) eine in Laufrichtung (A) des Stapelfaserverbandes (2) geneigte schräge Luftumlenkfläche (21) aufweist.1. Air nozzle spinning device for producing a spun thread from a staple fiber structure, which passes through a swirl chamber into which at least one compressed air channel with a nozzle-like opening opens, which is formed as a nozzle slot arranged in a nozzle body and located in a plane that is radial to the direction of travel of the staple fiber structure, through an end face of a cover to the compressed air duct is completed, characterized in that the cover (17) has an inclined air deflection surface (21) inclined in the running direction (A) of the staple fiber structure (2) in direct connection to the mouth (7).
2. Luftdüsenspinnvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Luftumlenkfläche (21) als den Stapelfaserverband (2) umgebende konische Ringfläche (22) ausgebildet ist.2. Air nozzle spinning device according to claim 1, characterized in that the air deflecting surface (21) is designed as the conical ring surface (22) surrounding the staple fiber structure (2).
3. Luftdüsenspinnvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass eine Mehrzahl von Mündungen (7) tangential gegen die Ringfläche (22) gerichtet ist.3. Air jet spinning device according to claim 2, characterized in that a plurality of orifices (7) is directed tangentially against the annular surface (22).
4. Luftdüsenspinnvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Konizität (α) der Ringfläche (22) gegenüber der radialen Ebene (E) 10° bis 20° beträgt.4. Air jet spinning device according to claim 2 or 3, characterized in that the taper (α) of the annular surface (22) relative to the radial plane (E) is 10 ° to 20 °.
5. Luftdüsenspinnvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Länge (L) der Luftumlenkfläche (21 ) in der Größenordnung der Breite (B) der Düsenschlitze (15) liegt. 5. Air nozzle spinning device according to one of claims 1 to 4, characterized in that the length (L) of the air deflecting surface (21) is of the order of the width (B) of the nozzle slots (15).
PCT/EP2003/010994 2002-11-22 2003-10-04 Air jet spinning device WO2004048655A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50310171T DE50310171D1 (en) 2002-11-22 2003-10-04 AIR JET SPIN DEVICE
EP03750686A EP1563130B1 (en) 2002-11-22 2003-10-04 Air jet spinning device
AU2003268916A AU2003268916A1 (en) 2002-11-22 2003-10-04 Air jet spinning device
JP2004554274A JP2006507418A (en) 2002-11-22 2003-10-04 Air jet spinning equipment

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DE10256344.6 2002-11-22
DE2002156344 DE10256344A1 (en) 2002-11-22 2002-11-22 Air-jet spinning device

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JP (1) JP2006507418A (en)
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AU (1) AU2003268916A1 (en)
DE (2) DE10256344A1 (en)
WO (1) WO2004048655A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104870989A (en) * 2012-12-20 2015-08-26 罗伯特·博世有限公司 Intake gas sensor for internal combustion engine
US10968541B2 (en) * 2016-04-29 2021-04-06 Maschinenfabrik Rieter Ag Air spinning machine and a method for producing a yarn

Families Citing this family (2)

* 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
DE102019111035A1 (en) * 2019-04-29 2020-10-29 Saurer Intelligent Technology AG Spinning unit, air-jet spinning machine and method for producing a yarn

Citations (4)

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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
DE19603291A1 (en) * 1995-02-10 1996-08-22 Murata Machinery Ltd Thread jointing apparatus of spinning machine and method thereof
EP1207224A2 (en) * 2000-11-15 2002-05-22 Murata Kikai Kabushiki Kaisha Piecing method and piecing device for the spinning machine
EP1217109A2 (en) * 2000-12-22 2002-06-26 Maschinenfabrik Rieter Ag Spinning device

Patent Citations (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
DE19603291A1 (en) * 1995-02-10 1996-08-22 Murata Machinery Ltd Thread jointing apparatus of spinning machine and method thereof
EP1207224A2 (en) * 2000-11-15 2002-05-22 Murata Kikai Kabushiki Kaisha Piecing method and piecing device for the spinning machine
EP1217109A2 (en) * 2000-12-22 2002-06-26 Maschinenfabrik Rieter Ag Spinning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104870989A (en) * 2012-12-20 2015-08-26 罗伯特·博世有限公司 Intake gas sensor for internal combustion engine
US10968541B2 (en) * 2016-04-29 2021-04-06 Maschinenfabrik Rieter Ag Air spinning machine and a method for producing a yarn

Also Published As

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AU2003268916A1 (en) 2004-06-18
DE50310171D1 (en) 2008-08-28
EP1563130B1 (en) 2008-07-16
EP1563130A1 (en) 2005-08-17
CN1714180A (en) 2005-12-28
JP2006507418A (en) 2006-03-02
DE10256344A1 (en) 2004-06-03

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