EP1644561B1 - Device for producing spun thread from staple fibre assembly - Google Patents
Device for producing spun thread from staple fibre assembly Download PDFInfo
- Publication number
- EP1644561B1 EP1644561B1 EP04740286A EP04740286A EP1644561B1 EP 1644561 B1 EP1644561 B1 EP 1644561B1 EP 04740286 A EP04740286 A EP 04740286A EP 04740286 A EP04740286 A EP 04740286A EP 1644561 B1 EP1644561 B1 EP 1644561B1
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- EP
- European Patent Office
- Prior art keywords
- channel
- spindle
- yarn
- inlet opening
- component
- Prior art date
- Legal status (The legal status 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 status listed.)
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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
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- 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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
- D01H15/002—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for false-twisting spinning machines
Definitions
- the invention relates to a device for producing a spun yarn from a staple fiber strand, comprising a feed channel for feeding the staple fiber strand, having a yarn withdrawal channel having an inlet port disposed in a stationary spindle-like member, with fluid means for generating a swirl flow around the inlet port of the yarn withdrawal channel with an annular exhaust gas duct surrounding the spindle-like component, and with an injection channel connected to a mouth to the yarn withdrawal channel and directed against its inlet opening, which can be connected to a compressed air source.
- a device of this kind is by the EP 0 787 843 A1 State of the art.
- a staple fiber strand in the drafting system is warped to a fiber ribbon, which is then given the spin rotation in an air jet unit.
- the fiber ribbon is first passed through a supply channel of the air nozzle assembly into a swirl chamber, which is associated with a fluid means for generating a swirling flow around an inlet opening of a yarn withdrawal channel around.
- the front ends of the fibers held in the fiber ribbon are guided into the yarn withdrawal channel, while the rear free fiber ends are spread, captured by the turbulent flow and around which are already located in the inlet opening of the yarn withdrawal channel, so wrapped front ends are rotated, whereby a thread with largely true rotation is generated.
- Such a device allows particularly high speeds of more than 300 m per minute.
- an injection channel is provided in the spindle-like component, which is connected with an orifice to the thread withdrawal channel and directed against the inlet opening.
- this injection channel is connected to a compressed air source, a suction flow directed against the drafting device is created in the thread withdrawal channel, with the aid of which the already spun thread end can be transported back to the drafting device.
- the injection channel shown and described only in the figure 10 of said document is tapered and directed through the spindle-shaped member through obliquely against the thread withdrawal channel. It is not disclosed in the known document how the injection channel is made in practical devices.
- the invention is based on the object, in a device of the type mentioned above to create favorable conditions that such an injection channel can be made in a simple and cost-effective manner.
- the object is achieved in that a separate spindle tip containing the inlet opening of the thread withdrawal channel is arranged on the spindle-like component, which contains the injection channel.
- the spindle tip which is arranged separately on the now multipart spindle-shaped component, can be designed such that the injection channel can be produced in a simple manner and can be connected to a compressed-air source.
- the spindle tip can be attached to the spindle-like component quite arbitrary and, for example, glued, is provided in a further embodiment of the invention that the spindle tip is easily interchangeable inserted into the spindle-like component and is fixed there, for example by means of an O-ring.
- the injection channel can be attached to the spindle tip so that it begins at its end facing away from the mouth at a substantially perpendicular to the injection channel boundary surface of the spindle tip. As a result, even if the injection channel runs obliquely to the thread withdrawal channel, can attach a thin bore perpendicular to a processing surface.
- the invention can be further characterized in that the injection channel at its end facing away from the mouth outside of the spindle tip in the spindle-like component with a Connection channel is continued, which is connectable to the compressed air source.
- a Connection channel is continued, which is connectable to the compressed air source.
- the connection channel to be drilled in the spindle-like component runs parallel to the thread withdrawal channel.
- the connection channel can then open at an end face of a recess for the spindle tip.
- the invention further relates to the described device a spindle tip, which is characterized in that it contains the initial part and an inlet opening of a yarn withdrawal channel, which is connected via an orifice with an injection channel directed against the inlet opening. It should thus be protected in addition to the described device and the spindle tip itself.
- the spindle tip may have, at its end region remote from the inlet opening, a cylindrical guide surface which can be inserted into a correspondingly shaped hollow-cylindrical recess of a spindle-like component.
- the said cylindrical guide surface can end at an end face.
- a chamfer or the like is provided at the transition region between the cylindrical guide surface and the end face of the spindle tip, at which the end of the injection channel facing away from the mouth begins.
- a spindle tip inserted separately into the stationary spindle-like component is also meaningful if it does not contain an injection channel, since such a spindle tip can be regarded as a spin agent with which the character of the spun thread can be changed. For example, the spindle tip can be more or less led to the feed channel, which can spider a thread with greater or smaller hairiness.
- the apparatus shown serves to produce a spun yarn 1 from a staple fiber strand 2.
- the device contains as essential components a drafting system 3 and an air jet unit 4th
- the to be spun staple fiber strand 2 is fed to the drafting 3 in the supply direction A and withdrawn as spun yarn 1 in the withdrawal direction B and forwarded to a winding device, not shown.
- the drafting system 3 shown only partially, is preferably a three-cylinder drafting system and contains a total of three pairs of rollers, each containing a driven lower roller and a top roller designed as a pressure roller. Shown is only the Liefenivalzencru 5.6. In such a drafting system 3, the staple fiber strand 2 is warped in a known manner to a desired fineness. Following the drafting system 3 then there is a thin fiber ribbon 7, which is stretched, but still untwisted.
- the air jet unit 4 the fiber ribbon 7 is fed via a feed channel 8. It follows a so-called vortex chamber 9, in which the fiber ribbon 7, the spinning rotation is granted, so that the spun yarn 1 is formed, which is withdrawn through a yarn withdrawal channel 10.
- a fluid device generates in the vortex chamber 9 by blowing compressed air through tangentially into the vortex chamber 9 opening compressed air nozzles 11 a vortex flow. The emerging from the nozzle openings compressed air is discharged through an exhaust duct 12, wherein this has an annular cross-section around a spindle-like stationary member 13 around which contains the thread withdrawal channel 10.
- an edge of a fiber guide surface 14 is arranged as a swirl barrier, which is arranged slightly eccentrically to the yarn withdrawal channel 10 in the region of its inlet opening 15.
- the fibers to be spun are held on the one hand in the fiber ribbon 7 and thus guided by the feed channel 8 substantially without rotation in the thread withdrawal channel 10.
- the fibers are exposed to the effect of the turbulent flow through which they or at least their end portions are radially expelled from the inlet port 15 of the yarn withdrawal channel 10.
- the yarns 1 produced by the described method thereby exhibit a core of substantially longitudinally extending fibers or fiber regions without substantial rotation and an outer region in which the fibers or fiber regions are rotated around the core.
- a device of this kind allows particularly high spinning speeds, which can be on the order of 600 m per minute.
- an injection channel 16 is provided as an aid, which is connectable to a compressed air source 17 and whose mouth 18 is connected to the thread withdrawal channel 10 and directed against the inlet opening 15.
- a directed against the drafting 3 suction air stream can be achieved, which returns the end of the spun yarn 1 to the delivery roller pair 5.6.
- a spindle tip 19 is provided according to the invention, which is arranged on the spindle-like member 13, and the inlet opening 15 of the thread withdrawal channel 10th and the injection channel 16 contains.
- the spindle tip 19 shown separately with the injection channel 16, which is directed with its mouth 18 against the inlet opening 15.
- the spindle tip 19 is easily interchangeable inserted into the spindle-like component 13 and fixed there by means of an O-ring 20.
- the injection channel 16 begins with its mouth 21 facing away from the end 21 at a substantially perpendicular to the injection channel 16 boundary surface 22 of the spindle tip 19.
- the injection channel 16 can be easily mounted in the spindle-like member 13 through a bore, even if this obliquely to the thread withdrawal channel 10th runs.
- the injection channel 16 continues outside the spindle tip in the spindle-shaped component 13 with a connection channel 23 which in turn, when needed with the compressed air source 17 is connectable. Characterized in that results in this way between the injection channel 16 and the connection channel 23 a parting line, both channels need not be inclined at an equal angle.
- the connection channel 23 can therefore run parallel to the thread withdrawal channel 10, which can be produced much easier than was the case in the prior art.
- the connection channel 23 can open on an end face 24 of a recess 25 for the spindle tip 19.
- the spindle tip 19 contains the initial part 26 and the inlet opening 15 of the thread withdrawal channel 10.
- the initial part 26 of the injection channel 16 opens with its mouth 18, the initial part 26 thus belongs to the thread withdrawal channel 10 and is coaxial with this.
- the spindle tip 19 has on its side facing away from the inlet opening 15 end portion 27 outside a cylindrical guide surface 28 which is insertable into a correspondingly shaped hollow cylindrical recess 25 of the spindle-like member 13.
- the cylindrical guide surface 28 ends at an end face 29.
- a chamfer 31 or the like is provided, at which the mouth 18 remote from the end 21 of the injection channel 16 begins.
Description
Die Erfindung betrifft eine Vorrichtung zum Herstellen eines gesponnenen Fadens aus einem Stapelfaserverband, mit einem Zuführkanal zum Zuführen des Stapelfaserverbandes, mit einem eine Einlassöffnung aufweisenden Fadenabzugskanal, der in einem stationären spindelartigen Bauteil angeordnet ist, mit einer Fluideinrichtung zum Erzeugen einer Wirbelströmung um die Einlassöffnung des Fadenabzugskanals, mit einem das spindelartige Bauteil ringförmig umgebenden Abluftkanal sowie mit einem mit einer Mündung an den Fadenabzugskanal angeschlossenen, gegen dessen Einlassöffnung gerichteten, an eine Druckluftquelle anschließbaren Injektionskanal.The invention relates to a device for producing a spun yarn from a staple fiber strand, comprising a feed channel for feeding the staple fiber strand, having a yarn withdrawal channel having an inlet port disposed in a stationary spindle-like member, with fluid means for generating a swirl flow around the inlet port of the yarn withdrawal channel with an annular exhaust gas duct surrounding the spindle-like component, and with an injection channel connected to a mouth to the yarn withdrawal channel and directed against its inlet opening, which can be connected to a compressed air source.
Eine Vorrichtung dieser Art ist durch die
Wenn bei der bekannten Vorrichtung aus irgendeinem Grund das Faserbändchen oder der ersponnene Faden bricht, dann wird im Zuge eines Anspinnvorganges das Ende eines bereits gesponnenen Fadens durch das Luftdüsenaggregat hindurch entgegen der betriebsmäßigen Transportrichtung in das Streckwerk zurückgeführt. Hierfür ist im spindelartigen Bauteil ein Injektionskanal vorgesehen, der mit einer Mündung an den Fadenabzugskanal angeschlossen und gegen dessen Einlassöffnung gerichtet ist. Wenn dieser Injektionskanal an eine Druckluftquelle angeschlossen wird, entsteht im Fadenabzugskanal eine gegen das Streckwerk gerichtete Saugströmung, mit deren Hilfe das bereits ersponnene Fadenende zum Streckwerk zurück transportiert werden kann. Der nur in der Figur 10 der genannten Druckschrift dargestellte und beschriebene Injektionskanal ist sich verjüngend ausgebildet und durch das spindelartige Bauteil hindurch schräg gegen den Fadenabzugskanal gerichtet. Es ist in der bekannten Druckschrift nicht offenbart, wie der Injektionskanal bei praktischen Vorrichtungen hergestellt wird.If in the known device, for some reason, the fiber ribbon or the spun yarn breaks, then in the course of a piecing process, the end of an already spun yarn through the air jet unit through against the operational Transport direction returned to the drafting system. For this purpose, an injection channel is provided in the spindle-like component, which is connected with an orifice to the thread withdrawal channel and directed against the inlet opening. When this injection channel is connected to a compressed air source, a suction flow directed against the drafting device is created in the thread withdrawal channel, with the aid of which the already spun thread end can be transported back to the drafting device. The injection channel shown and described only in the figure 10 of said document is tapered and directed through the spindle-shaped member through obliquely against the thread withdrawal channel. It is not disclosed in the known document how the injection channel is made in practical devices.
Der Erfindung liegt die Aufgabe zu Grunde, bei einer Vorrichtung der eingangs genannten Art günstige Voraussetzungen zu schaffen, dass ein solcher Injektionskanal auf einfache und kostengünstige Weise hergestellt werden kann.The invention is based on the object, in a device of the type mentioned above to create favorable conditions that such an injection channel can be made in a simple and cost-effective manner.
Die Aufgabe wird dadurch gelöst, dass an dem spindelartigen Bauteil eine die Einlassöffnung des Fadenabzugskanals enthaltende gesonderte Spindelspitze angeordnet ist, die den Injektionskanal enthält.The object is achieved in that a separate spindle tip containing the inlet opening of the thread withdrawal channel is arranged on the spindle-like component, which contains the injection channel.
Dadurch, dass an dem spindelartigen stationären Bauteil eine gesonderte Spindelspitze angeordnet ist, ist es nicht mehr erforderlich, an dem an sich schon komplizierten spindelartigen Bauteil eine schräge Druckluftbohrung anzubringen. Vielmehr kann die an dem jetzt mehrteiligen spindelartigen Bauteil gesondert angeordnete Spindelspitze so gestaltet werden, dass der Injektionskanal auf einfache Weise herstellbar und an eine Druckluftquelle anschließbar ist.Because a separate spindle tip is arranged on the spindle-like stationary component, it is no longer necessary to attach an oblique compressed-air bore to the already complicated spindle-shaped component. Rather, the spindle tip, which is arranged separately on the now multipart spindle-shaped component, can be designed such that the injection channel can be produced in a simple manner and can be connected to a compressed-air source.
Obwohl die Spindelspitze an dem spindelartigen Bauteil durchaus beliebig befestigt und beispielsweise angeklebt sein kann, ist in weiterer Ausgestaltung der Erfindung vorgesehen, dass die Spindelspitze leicht auswechselbar in das spindelartige Bauteil eingesetzt ist und beispielsweise mittels eines O-Ringes dort fixiert wird. Der Injektionskanal lässt sich an der Spindelspitze so anbringen, dass er an seinem der Mündung abgewandten Ende an einer im Wesentlichen senkrecht zum Injektionskanal angeordneten Begrenzungsfläche der Spindelspitze beginnt. Dadurch lässt sich selbst dann, wenn der Injektionskanal schräg zum Fadenabzugskanal verläuft, eine dünne Bohrung senkrecht zu einer Bearbeitungsfläche anbringen.Although the spindle tip can be attached to the spindle-like component quite arbitrary and, for example, glued, is provided in a further embodiment of the invention that the spindle tip is easily interchangeable inserted into the spindle-like component and is fixed there, for example by means of an O-ring. The injection channel can be attached to the spindle tip so that it begins at its end facing away from the mouth at a substantially perpendicular to the injection channel boundary surface of the spindle tip. As a result, even if the injection channel runs obliquely to the thread withdrawal channel, can attach a thin bore perpendicular to a processing surface.
Die Erfindung lässt sich weiter dadurch ausgestalten, dass der Injektionskanal an seinem der Mündung abgewandten Ende außerhalb der Spindelspitze im spindelartigen Bauteil mit einem Anschlusskanal fortgesetzt wird, der mit der Druckluftquelle verbindbar ist. Bei einer solchen Ausgestaltung lässt es sich einrichten, dass der im spindelartigen Bauteil zu bohrende Anschlusskanal parallel zum Fadenabzugskanal verläuft. Der Anschlusskanal kann dann an einer Stirnfläche einer Ausnehmung für die Spindelspitze münden.The invention can be further characterized in that the injection channel at its end facing away from the mouth outside of the spindle tip in the spindle-like component with a Connection channel is continued, which is connectable to the compressed air source. In such an embodiment, it can be arranged that the connection channel to be drilled in the spindle-like component runs parallel to the thread withdrawal channel. The connection channel can then open at an end face of a recess for the spindle tip.
Die Erfindung betrifft ferner für die beschriebene Vorrichtung eine Spindelspitze, die dadurch gekennzeichnet ist, dass sie den Anfangsteil und eine Einlassöffnung eines Fadenabzugskanals enthält, der über eine Mündung mit einem gegen die Einlassöffnung gerichteten Injektionskanal verbunden ist. Es soll somit neben der beschriebenen Vorrichtung auch die Spindelspitze selbst mit geschützt sein.The invention further relates to the described device a spindle tip, which is characterized in that it contains the initial part and an inlet opening of a yarn withdrawal channel, which is connected via an orifice with an injection channel directed against the inlet opening. It should thus be protected in addition to the described device and the spindle tip itself.
Die Spindelspitze kann an ihrem der Einlassöffnung abgewandten Endbereich eine zylindrische Führungsfläche aufweisen, die in eine entsprechend geformte hohlzylindrische Ausnehmung eines spindelartigen Bauteils einsetzbar ist. Die genannte zylindrische Führungsfläche kann dabei an einer Stirnfläche enden.The spindle tip may have, at its end region remote from the inlet opening, a cylindrical guide surface which can be inserted into a correspondingly shaped hollow-cylindrical recess of a spindle-like component. The said cylindrical guide surface can end at an end face.
Weiterhin kann vorgesehen sein, dass am Übergangsbereich zwischen der zylindrischen Führungsfläche und der Stirnfläche der Spindelspitze eine Fase oder dergleichen vorgesehen ist, an der das der Mündung abgewandte Ende des Injektionskanals beginnt.Furthermore, it can be provided that a chamfer or the like is provided at the transition region between the cylindrical guide surface and the end face of the spindle tip, at which the end of the injection channel facing away from the mouth begins.
Eine gesondert in das stationäre spindelartige Bauteil eingesetzte Spindelspitze ist auch dann sinnvoll, wenn sie keinen Injektionskanal enthält, da eine solche Spindelspitze als ein Spinnmittel angesehen werden kann, mit welchem der Charakter des ersponnenen Fadens geändert werden kann. Beispielsweise lässt sich die Spindelspitze mehr oder weniger an den Zuführkanal heranführen, wodurch sich ein Faden mit größerer oder kleinerer Haarigkeit erspinnen lässt.A spindle tip inserted separately into the stationary spindle-like component is also meaningful if it does not contain an injection channel, since such a spindle tip can be regarded as a spin agent with which the character of the spun thread can be changed. For example, the spindle tip can be more or less led to the feed channel, which can spider a thread with greater or smaller hairiness.
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:
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Figur 1 in vergrößerter Darstellung einen Axialschnitt durch das Luftdüsenaggregat im Bereich des stationären spindelartigen Bauteiles, -
Figur 2 in noch stärkerer Vergrößerung einen Axialschnitt durch die in das spindelartige Bauteil einsetzbare Spindelspitze.
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FIG. 1 in an enlarged view an axial section through the air nozzle unit in the region of the stationary spindle-like component, -
FIG. 2 in even greater magnification, an axial section through the insertable into the spindle-like component spindle tip.
Die in
Der zu verspinnende Stapelfaserverband 2 wird dem Streckwerk 3 in Zulieferrichtung A zugeführt und als ersponnener Faden 1 in Abzugsrichtung B abgezogen und an eine nicht dargestellte Aufspuleinrichtung weitergeleitet.The to be spun staple fiber strand 2 is fed to the
Das nur teilweise dargestellte Streckwerk 3 ist vorzugsweise ein Drei-Zylinder-Streckwerk und enthält insgesamt drei Walzenpaare, die jeweils eine angetriebene Unterwalze und eine als Druckwalze ausgebildete Oberwalze enthalten. Dargestellt ist lediglich das Liefenivalzenpaar 5,6. In einem solchen Streckwerk 3 wird in bekannter Weise der Stapelfaserverband 2 bis zu einer gewünschten Feinheit verzogen. Im Anschluss an das Streckwerk 3 liegt dann ein dünnes Faserbändchen 7 vor, welches verstreckt, jedoch noch ungedreht ist.The
Dem Luftdüsenaggregat 4 wird das Faserbändchen 7 über einen Zuführkanal 8 zugeführt. Es folgt eine so genannte Wirbelkammer 9, in welcher dem Faserbändchen 7 die Spinndrehung erteilt wird, so dass der gesponnene Faden 1 entsteht, der durch einen Fadenabzugskanal 10 abgezogen wird. Eine Fluideinrichtung erzeugt in der Wirbelkammer 9 durch Einblasen von Druckluft durch tangential in die Wirbelkammer 9 mündende Druckluftdüsen 11 eine Wirbelströmung. Die aus den Düsenöffnungen austretende Druckluft wird durch einen Abluftkanal 12 abgeführt, wobei dieser einen ringförmigen Querschnitt um ein spindelartiges stationäres Bauteil 13 herum aufweist, welches den Fadenabzugskanal 10 enthält.The
Im Bereich der Wirbelkammer 9 ist als Drallsperre eine Kante einer Faserführungsfläche 14 angeordnet, die leicht exzentrisch zum Fadenabzugskanal 10 im Bereich von dessen Einlassöffnung 15 angeordnet ist.In the area of the vortex chamber 9, an edge of a fiber guide surface 14 is arranged as a swirl barrier, which is arranged slightly eccentrically to the
In der Vorrichtung werden die zu verspinnenden Fasern einerseits im Faserbändchen 7 gehalten und so vom Zuführkanal 8 im Wesentlichen ohne Drehungserteilung in den Fadenabzugskanal 10 geführt. Andererseits sind die Fasern aber in dem Bereich zwischen dem Zuführkanal 8 und dem Fadenabzugskanal 10 der Wirkung der Wirbelströmung ausgesetzt, durch die sie oder mindestens ihre Endbereiche von der Einlassöffnung 15 des Fadenabzugskanals 10 radial weggetrieben werden. Die mit dem beschriebenen Verfahren hergestellten Fäden 1 zeigen dadurch 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 apparatus, the fibers to be spun are held on the one hand in the fiber ribbon 7 and thus guided by the feed channel 8 substantially without rotation in the
Eine Vorrichtung dieser Art erlaubt besonders hohe Spinngeschwindigkeiten, die in der Größenordnung von 600 m pro Minute liegen können.A device of this kind allows particularly high spinning speeds, which can be on the order of 600 m per minute.
Wenn aus irgendeinem Grund das noch sehr schwache ungedrehte Faserbändchen 7 oder der ersponnene Faden 1 bricht, findet anschließend ein Anspinnvorgang statt, bei welchem das Ende des ersponnenen Fadens 1 entgegen der Abzugsrichtung B zum Streckwerk 3 zurückgeführt wird. Hierfür ist als Hilfsmittel ein Injektionskanal 16 vorgesehen, der an eine Druckluftquelle 17 anschließbar ist und dessen Mündung 18 an den Fadenabzugskanal 10 angeschlossen und gegen dessen Einlassöffnung 15 gerichtet ist. Dadurch lässt sich im Fadenabzugskanal 10 ein gegen das Streckwerk 3 gerichteter Saugluftstrom erreichen, der das Ende des ersponnenen Fadens 1 zum Lieferwalzenpaar 5,6 zurückführt.If, for some reason, the still very weak untwisted fiber ribbon 7 or the spun yarn 1 breaks, then a piecing process takes place in which the end of the spun yarn 1 is fed back against draft direction B to the
Da es nicht ganz einfach ist, den einen nur kleinen Durchmesser aufweisenden Injektionskanal 16 schräg zum Fadenabzugskanal 10 gerichtet im spindelartigen Bauteil 13 anzubringen, ist erfindungsgemäß eine Spindelspitze 19 vorgesehen, die an dem spindelartigen Bauteil 13, angeordnet ist und eine die Einlassöffnung 15 des Fadenabzugskanals 10 sowie den Injektionskanal 16 enthält. Es sei in diesem Zusammenhang zusätzlich auf die stark vergrößert dargestellte
Die Spindelspitze 19 ist leicht auswechselbar in das spindelartige Bauteil 13 eingesetzt und mittels eines O-Ringes 20 dort fixiert.The
Der Injektionskanal 16 beginnt mit seinem der Mündung 18 abgewandten Ende 21 an einer im Wesentlichen senkrecht zum Injektionskanal 16 angeordneten Begrenzungsfläche 22 der Spindelspitze 19. Dadurch lässt sich der Injektionskanal 16 leicht im spindelartigen Bauteil 13 durch eine Bohrung anbringen, auch wenn diese schräg zum Fadenabzugskanal 10 verläuft. An seinem der Mündung 18 abgewandten Ende 21 ist der Injektionskanal 16 außerhalb der Spindelspitze im spindelartigen Bauteil 13 mit einem Anschlusskanal 23 fortgesetzt, welcher seinerseits bei Bedarf mit der Druckluftquelle 17 verbindbar ist. Dadurch, dass sich zwischen dem Injektionskanal 16 und dem Anschlusskanal 23 auf diese Weise eine Trennfuge ergibt, brauchen beide Kanäle nicht unter einem gleichen Winkel geneigt zu sein. Der Anschlusskanal 23 kann daher parallel zum Fadenabzugskanal 10 verlaufen, was sich wesentlich einfacher herstellen lässt, als dies beim Stand der Technik der Fall war. Der Anschlusskanal 23 kann dabei an einer Stirnfläche 24 einer Ausnehmung 25 für die Spindelspitze 19 münden.The
Wie aus den
Die Spindelspitze 19 weist an ihrem der Einlassöffnung 15 abgewandten Endbereich 27 außen eine zylindrische Führungsfläche 28 auf, die in eine entsprechend geformte hohlzylindrische Ausnehmung 25 des spindelartigen Bauteils 13 einsetzbar ist. Die zylindrische Führungsfläche 28 endet an einer Stirnfläche 29.The
Am Übergangsbereich 30 zwischen der zylindrischen Führungsfläche 28 und der Stirnfläche 29 ist eine Fase 31 oder dergleichen vorgesehen, an der das der Mündung 18 abgewandte Ende 21 des Injektionskanals 16 beginnt.At the
Claims (11)
- Device for producing spun yarn from a fibre strand of staple fibres, with a delivery channel (8) for feeding the staple fibre assembly (7), with a yarn withdraw channel (10) having an inlet opening (15) and arranged in a stationary and spindle-like component (13), with a fluid unit for generating a vortex flow around the inlet opening (15) of the yarn withdraw channel (10), with an air exhaust channel (12) surrounding the spindle-like component (13) in annular form, and with an injection channel (16) connected by an orifice to the yarn withdraw channel, directed to its inlet opening and connectable to a compressed air source, characterized in that a separate spindle tip (19) containing the inlet opening of the yarn withdraw channel (10) is arranged on the spindle-like component (13) and contains the injection channel (16).
- Device according to Claim 1, characterized in that the spindle tip (19) is fitted into the spindle-like component (13) in easily replaceable fashion.
- Device according to Claim 2, characterized in that the spindle tip (19) is fixed inside the spindle-like component (13) by means of an O-ring (20).
- Device according to one of Claims 1 to 3, characterized in that the injection channel (16) begins at its end (21) facing away from the orifice (18) at a limiting surface (22) of the spindle tip (19) arranged substantially perpendicular to the injection channel (16).
- Device according to one of Claims 1 to 4, characterized in that the injection channel (16) is continued at its end (21) facing away from the orifice (18) outside the spindle tip (19) in the spindle-like component (13) with a connecting channel (23) connectable to the compressed air source (17).
- Device according to Claim 5, characterized in that the connecting channel (23) runs parallel to the yarn withdraw channel (10).
- Device according to Claim 6, characterized in that the connecting channel (23) opens at an end face (24) of a recess (25) for the spindle tip (19).
- Spindle tip for a device according to one of the preceding claims, characterized in that it contains the initial part (26) and an inlet opening (15) of a yarn withdraw channel (10) that is connected via an orifice (18) to an injection channel (16) directed to the inlet opening (15).
- Spindle tip according to Claim 6, characterized in that it has at its end area (27) facing away from the inlet opening (15) a cylindrical guide surface (28) insertable into an appropriately shaped hollow-cylindrical recess (25) of a spindle-like component (13).
- Spindle tip according to Claim 9, characterized in that the cylindrical guide surface (28) terminates at an end face (29).
- Spindle tip according to Claim 9 or 10, characterized in that a bevel (31) or the like is provided at the transitional area (30) between the cylindrical guide surface (28) and the end face (29), at which chamfer starts that end (21) of the injection channel (16) facing away from the orifice (18).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003133411 DE10333411A1 (en) | 2003-07-15 | 2003-07-15 | Apparatus for producing a spun yarn from a staple fiber strand |
| PCT/EP2004/006874 WO2005007948A1 (en) | 2003-07-15 | 2004-06-25 | Device for producing spun thread from staple fibre assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1644561A1 EP1644561A1 (en) | 2006-04-12 |
| EP1644561B1 true EP1644561B1 (en) | 2010-04-07 |
Family
ID=33560249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04740286A Not-in-force EP1644561B1 (en) | 2003-07-15 | 2004-06-25 | Device for producing spun thread from staple fibre assembly |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1644561B1 (en) |
| JP (1) | JP2009513836A (en) |
| CN (1) | CN100519853C (en) |
| DE (2) | DE10333411A1 (en) |
| WO (1) | WO2005007948A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006018249A1 (en) * | 2006-04-13 | 2007-10-18 | Wilhelm Stahlecker Gmbh | Spindle-shaped component for an air jet spinning device with an injection channel |
| DE102007006674A1 (en) * | 2007-02-10 | 2008-08-14 | Oerlikon Textile Gmbh & Co. Kg | Air spinning device |
| DE102007009074A1 (en) | 2007-02-24 | 2008-08-28 | Oerlikon Textile Gmbh & Co. Kg | spinning device |
| EP2454403B1 (en) * | 2009-07-16 | 2014-07-02 | Maschinenfabrik Rieter AG | Air-jet spinning apparatus |
| DE102009034206A1 (en) | 2009-07-17 | 2011-01-27 | Maschinenfabrik Rieter Ag | Component for an air jet spinning device |
| DE102011053810A1 (en) * | 2011-09-21 | 2013-05-16 | Maschinenfabrik Rieter Ag | Garnbildungselement for a spinning station of an air-spinning machine and method for preparing a piecing operation on an air-spinning machine |
| DE102011053837A1 (en) * | 2011-09-21 | 2013-03-21 | Maschinenfabrik Rieter Ag | Spinning tip for a hollow spindle of an air-jet spinning machine |
| DE102012100674A1 (en) | 2012-01-27 | 2013-08-01 | Maschinenfabrik Rieter Ag | Air-jet spinning machine with a cleaning member and method for cleaning the swirl chamber of an air-jet spinning machine |
| DE102012110315A1 (en) | 2012-10-29 | 2014-04-30 | Maschinenfabrik Rieter Ag | Garnbildungselement for an air-spinning machine with an insert and spinneret equipped therewith |
| CN103774305B (en) * | 2014-01-07 | 2016-01-20 | 太仓市世博纺织配件有限公司 | The quick-change mechanism of twist arrester on a kind of elasticizer |
| CN103774303B (en) * | 2014-01-07 | 2016-01-20 | 太仓市世博纺织配件有限公司 | The quick change method of twist arrester on elasticizer |
| DE102014112360A1 (en) * | 2014-08-28 | 2016-03-03 | Maschinenfabrik Rieter Ag | Garnbildungselement for a spinneret of an air spinning machine, air-jet spinning machine and method for operating such |
| JP6394954B2 (en) * | 2014-09-30 | 2018-09-26 | 村田機械株式会社 | Hollow guide shaft body, pneumatic spinning device, and textile machine |
| CN105568455B (en) * | 2016-03-09 | 2018-03-27 | 苏州华策纺织科技有限公司 | One kind broken string automatic connector |
| DE102016116693A1 (en) * | 2016-09-07 | 2018-03-08 | Maschinenfabrik Rieter Ag | Garnbildungselement and spinneret for an air-spinning machine |
| DE102016118858A1 (en) * | 2016-10-05 | 2018-04-05 | Maschinenfabrik Rieter Ag | Fiber guiding element for a spinneret of an air-spinning machine and method for operating an air-jet spinning machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100296977B1 (en) * | 1996-01-30 | 2001-11-22 | 무라타 기카이 가부시키가이샤 | Fishing method of spinning machine |
| JP2001295143A (en) * | 2000-04-10 | 2001-10-26 | Murata Mach Ltd | Spinning device |
| CN1200155C (en) * | 2002-07-10 | 2005-05-04 | 东华大学 | Complex twisting device for air-jet eddy-current spinning |
-
2003
- 2003-07-15 DE DE2003133411 patent/DE10333411A1/en not_active Withdrawn
-
2004
- 2004-06-25 EP EP04740286A patent/EP1644561B1/en not_active Not-in-force
- 2004-06-25 CN CN 200480020473 patent/CN100519853C/en not_active Expired - Fee Related
- 2004-06-25 JP JP2006519792A patent/JP2009513836A/en active Pending
- 2004-06-25 WO PCT/EP2004/006874 patent/WO2005007948A1/en active Application Filing
- 2004-06-25 DE DE502004011001T patent/DE502004011001D1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005007948A1 (en) | 2005-01-27 |
| DE10333411A1 (en) | 2005-02-03 |
| CN1823186A (en) | 2006-08-23 |
| EP1644561A1 (en) | 2006-04-12 |
| CN100519853C (en) | 2009-07-29 |
| DE502004011001D1 (en) | 2010-05-20 |
| JP2009513836A (en) | 2009-04-02 |
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