EP3293294A1 - Yarn forming element and spinning nozzle for an air-jet spinning machine - Google Patents
Yarn forming element and spinning nozzle for an air-jet spinning machine Download PDFInfo
- Publication number
- EP3293294A1 EP3293294A1 EP17189446.2A EP17189446A EP3293294A1 EP 3293294 A1 EP3293294 A1 EP 3293294A1 EP 17189446 A EP17189446 A EP 17189446A EP 3293294 A1 EP3293294 A1 EP 3293294A1
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- EP
- European Patent Office
- Prior art keywords
- spinning
- sleeve
- yarn
- garnbildungselement
- spinning tip
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- 238000009987 spinning Methods 0.000 title claims abstract description 92
- 238000010042 air jet spinning Methods 0.000 title claims 3
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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 present invention relates to a Garnsentelement for an air-spinning machine, which serves to produce a yarn from a fiber structure by means of a swirling air flow, wherein the Garn Strukturselement has a spinning tip with an inlet opening in the region by means of the swirling air flow, a yarn can be generated, wherein the Garnticianselement a
- the yarn formation element has a discharge channel for a yarn produced in the region of the spinning tip, which extends through the spinning tip and the base body and opens into an outlet via which the yarn produced in the region of the spinning tip emerges from the yarn formation element can escape.
- a spinneret for an air spinning machine which serves to produce a yarn from a fiber structure by means of a vortex air flow, the spinneret having a vortex chamber partially surrounded vortex chamber with an inlet port for a fiber strand and at least partially extending into the vortex chamber yarn formation element in that the vortex chamber is associated with air nozzles directed towards an outer surface of the yarn formation element, via which air can be introduced into the vortex chamber, in order to impart rotation to the fiber structure in the region of an inlet opening of the yarn formation element, and wherein the yarn formation element has a discharge channel adjoining the inlet opening over which the yarn is removable from the vortex chamber.
- the spinneret described herein includes a yarn forming member opening into a swirl chamber having a discharge channel for the yarn produced in the swirl chamber, wherein the air spin typically rotation of the fibers of the fiber composite to be spun around an untwisted fiber core in the region of the inlet opening of the spinning tip.
- the object of the present invention is therefore to propose a yarn-forming element and a spinneret equipped therewith for an air-spinning machine, which take account of this requirement.
- the yarn formation element is now distinguished by the fact that the spinning tip and the base body are connected to one another with the aid of at least one snap connection.
- the main body may be formed one or more parts.
- the spinning nib is the portion of the yarn-forming member which includes said inlet opening while the body forms the portion having said outlet for the yarn.
- acts the main body and the spinning tip are separate units of the yarn-forming element, which are connected to one another with the aid of one or more snap connections.
- a snap connection is a connection which comprises one or more functional elements for the releasable positive connection of the spinning tip and the base body.
- the functional elements may be, for example, elastic hook or clip elements which engage in connection in a corresponding functional element in the form of a depression or undercut.
- a spring can be used, which acts on a ball or another element in a defined direction with a force.
- one or more of the existing functional elements of the snap connection may be part of the spinning tip and / or of the main body. It is also conceivable, however, that at least one functional element is formed by a further component of the yarn-forming element, for example a sleeve described in more detail below.
- connection there is a positive connection between at least two functional elements of the snap connection, which can be released again by pulling the spinning tip and the base element apart.
- the spinning tip which is subjected during the spinning operation of an increased mechanical stress by passing on its surface fibers, thereby can be easily replaced by a new spinning tip.
- the snap connection should be designed such that spinning tip and body can be separated manually and without the use of a tool.
- the snap connection should also be designed in such a way that the separation takes place in that the spinning tip and the base body are pulled apart in a direction running colinearly to a longitudinal axis of the withdrawal channel.
- the connection in this case preferably takes place in that the said sections of the yarn formation element are moved toward one another in said direction until the snap-in connection engages.
- the snap connection comprises a functional element in the form of a snap ring.
- a snap ring is a snap ring with a break in the circumferential direction.
- the basic form of a snap ring is in FIG. 3 (Reference numeral 22).
- the main body now has a depression in the region of an outer surface (eg in the form of an annular groove) in which the snap ring is located, it is compressed in the radial direction when the spinning tip or the sleeve explained in greater detail below is pushed over the area of the body, which has the snap ring. If the spinning tip or the sleeve has reached its end position with respect to the basic body (which corresponds to the position that it should have after installation in a spinning machine), then the snap ring can again assume its original shape, provided of course, the spinning tip or the sleeve have an internal recess in the region of an inner surface into which the snap ring can snap or engage.
- an outer surface eg in the form of an annular groove
- the snap ring can also be located on an outer surface of the spinning tip, in which case the base body should have an inner surface with a corresponding inner recess.
- the sleeve is in this case part of the snap connection and preferably has a, in particular ring-shaped, depression in the region of an inner surface into which the snap ring engages when the sleeve is pushed over the spinning tip and finally over part of the base body.
- the sleeve preferably has a first circular opening through which protrudes a portion of the body and a second circular opening through which the spinning tip protrudes.
- the first opening preferably has a larger diameter than the second opening.
- the sleeve should have an annular shoulder in the region of the second opening (ie the inner diameter of the sleeve should increase starting from the second opening in the direction of the first opening). If the spinning tip also has a corresponding annular shoulder, the sleeve can indeed be pushed over the spinning tip.
- the spinning tip in this case has an outer diameter in the region of its annular shoulder, which is greater than the inner diameter of the second opening.
- the sleeve is suitable in this case to hold the spinning tip on the body, since the spinning tip can not pass completely through the sleeve.
- the spinning tip is directly or with the interposition of a ring seal on the base body, when the sleeve is completely pushed onto the base body.
- the sleeve and / or the spinning tip should be rotationally symmetrical. If the sleeve is pushed over the spinning tip and finally over a portion of the body during assembly, the spinning tip and the sleeve relative to the base body and the sleeve relative to the spinning tip in the circumferential direction of said openings of the sleeve need not be aligned in a certain angle of rotation. The assembly of the yarn formation element is thereby simplified.
- the above-mentioned functional elements of the snap connection are, moreover, preferably formed by a snap ring, which is arranged in an annular groove of the base body and by a recess provided on the inside of the sleeve (which is preferably also realized by an annular groove), wherein the snap ring during assembly of the Garn Strukturselements snaps into the recess of the sleeve.
- the sleeve has an opening facing away from the spinning tip, wherein the opening is circular and wherein the radially extending wall thickness of the sleeve increases from the opening at least a little way in a collinear to the discharge channel direction of the sleeve.
- the wall of the sleeve in the region of said opening is preferably conical. If one pushes the sleeve onto the base body, the conical shape causes a funnel effect and thereby simplifies the pushing on, without there being a tilting between the sleeve and the base body.
- the base body also has the above-described snap ring, the sliding of the sleeve over the snap ring and its compression in the radial direction are also simplified.
- the sleeve has a recess arranged in the region of an inner wall of the sleeve, preferably in the form of an annular groove, into which the snap ring extends.
- the sleeve engages in this case when pushed onto the body in the desired end position on the body.
- the snap ring is thus preferably outwardly surrounded by an annular groove of the sleeve and inwardly (ie in the direction of the outlet channel) by an annular groove of the base body. Both annular grooves thus form an annular channel in which the snap ring is located.
- the base body made of metal, the spinning tip are at least partially made of ceramic and the sleeve made of plastic.
- the sleeve can be made particularly cost-effective in this case, wherein the base body and the spinning tip have the necessary rigidity or in the case of ceramic the necessary wear resistance.
- one or more sealing rings are arranged between the spinning tip and the main body.
- the sealing ring or rings (which may be made of rubber, plastic or metal) should surround the extraction channel, preferably concentrically.
- the sealing ring (s) are also concentric with said snap ring (if present). In any case, prevented by the one or more sealing rings that air that flows through the discharge channel during the spinning operation, can emerge laterally between the spinning tip and the base body.
- a spinneret which, in addition to a vortex chamber known from the prior art and the air nozzles responsible for the vortex air flow during the spinning operation, comprises a yarn formation element projecting into the vortex chamber. According to the yarn formation element according to the previous or subsequent description is formed.
- FIG. 1 shows a partially sectioned view of a spinneret 13 for an air spinning machine.
- the spinneret 13 has an inlet mouth 16, which may be formed for example by a separate fiber guide element 20 and through which the fiber material to be spun and usually as a stretched sliver passes into the so-called vortex chamber 15 of the spinning station, in turn, takes place the actual spinning process.
- the stretching usually takes over the fiber guide element 20 upstream (not shown) drafting the corresponding spinning position of the air spinning machine (which usually includes a plurality of spinning units, which in turn each have a spinneret 13 and a drafting), from which the stretched sliver with Help is withdrawn from a pair of withdrawal rollers, also not shown (alternatively, the deduction can also be made by other means, eg a Garn precederolle).
- the fiber material After the fiber material has passed the fiber guide element 20, it passes into the effective region of a plurality of air nozzles 18, which generally open tangentially into the vortex chamber 15 and which can be present, for example, as bores within a vortex chamber wall 14. If these during spinning operation on a corresponding, z. B. in an air duct 21, supply line (not shown) acted upon by an overpressure, creating a vortex air flow, which flows around an inlet opening 5 for the fibers having region of a vortex chamber 15 projecting Garnsentelements 1 or its outer surface 17 (at least a part of the introduced air finally leaves the vortex chamber 15 again via a corresponding air outlet 19).
- the desired rotation of the fiber material is finally produced and, as a result, the desired yarn 2, which extends beyond the outlet channel 7 adjoining the inlet opening 5 from the vortex chamber 15 and ultimately via an outlet 8 from the spinneret 13 can be deducted.
- multipart yarn-forming elements 1 which consist of a base body 6 and an associated spinning tip 4.
- connection in these cases always with the help of fittings or by a no longer to be solved interference fit.
- the present invention proposes to realize base body 6 and spinning tip 4 with the aid of at least one snap connection.
- the base body 6 may have a recess, preferably an annular groove 12, which serves to receive a snap ring 22.
- a sleeve 10 which also has a recess (preferably in the form of an annular groove 12) in the region of its inner wall 11. If the sleeve 10 now with the in FIG. 3 to see opening 9 on the spinning tip 4 and then pushed over the base body 6, so the snap ring 22 snaps into the intended end position of the sleeve 10 in the annular groove 12 of the sleeve 10 a. The snap connection is made with it, spinning tip 4 and base 6 are connected.
- said opening 9 may be conical, so that the wall thickness D of the sleeve 10 gradually increases starting from the opening 9.
- a sealing ring 23 is provided between the spinning tip 4 and the base body 6, which prevents lateral leakage of air between the base body 6 and the spinning tip 4.
- FIG. 4 shows FIG. 4 in that said sleeve 10 can not necessarily be present. Rather, the snap connection can also be realized directly by depressions in the spinning tip 4 and the base body 6 and an intermediate snap ring 22.
- the z. B. part of the spinning tip 4 may be present, the base body 6 and / or the sleeve 10 may be.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Die Erfindung betrifft ein Garnbildungselement (1) für eine Luftspinnmaschine, die der Herstellung eines Garns (2) aus einem Faserverband (3) mit Hilfe einer Wirbelluftstromung dient, wobei das Garnbildungselement (1) eine Spinnspitze (4) mit einer Einlassoffnung (5) für Fasern des Faserverbands (3) besitzt, wobei das Garnbildungselement (1) einen mit der Spinnspitze (4) verbundenen Grundkörper (6) aufweist, und wobei das Garnbildungselement (1) einen Abzugskanal (7) für ein im Bereich der Spinnspitze (4) hergestelltes Garn (2) aufweist, der sich durch die Spinnspitze (4) und den Grundkörper (6) erstreckt und in einem Auslass (8) mündet, über den das im Bereich der Spinnspitze (4) hergestellte Garn (2) aus dem Garnbildungselement (1) austreten kann. Erfindungsgemäß wird vorgeschlagen, dass die Spinnspitze (4) und der Grundkörper (6) mit Hilfe zumindest einer Schnappverbindung miteinander verbunden sind. Darüber hinaus wird eine Spinndüse (13) mit einem entsprechenden Garnbildungselement (1) vorgeschlagen.The invention relates to a yarn formation element (1) for an air spinning machine, which serves to produce a yarn (2) from a fiber structure (3) by means of a vortex air flow, wherein the yarn formation element (1) comprises a spinning tip (4) with an inlet opening (5) for Fibers of the fiber composite (3) has, wherein the Garnbildungselement (1) having a spinning tip (4) connected to the base body (6), and wherein the Garnbildungselement (1) a discharge channel (7) for one in the spinning tip (4) produced Yarn (2) which extends through the spinning tip (4) and the main body (6) and opens into an outlet (8), over which the yarn (2) produced in the region of the spinning tip (4) from the yarn formation element (1 ) can escape. According to the invention it is proposed that the spinning tip (4) and the base body (6) are connected to each other by means of at least one snap connection. In addition, a spinneret (13) with a corresponding Garnbildungselement (1) is proposed.
Description
Die vorliegende Erfindung betrifft ein Garnbildungselement für eine Luftspinnmaschine, die der Herstellung eines Garns aus einem Faserverband mit Hilfe einer Wirbelluftströmung dient, wobei das Garnbildungselement eine Spinnspitze mit einer Einlassöffnung besitzt, in deren Bereich mit Hilfe der Wirbelluftströmung ein Garn erzeugbar ist, wobei das Garnbildungselement einen mit der Spinnspitze verbundenen Grundkörper aufweist, und wobei das Garnbildungselement einen Abzugskanal für ein im Bereich der Spinnspitze hergestelltes Garn aufweist, der sich durch die Spinnspitze und den Grundkörper erstreckt und in einem Auslass mündet, über den das im Bereich der Spinnspitze hergestellte Garn aus dem Garnbildungselement austreten kann.The present invention relates to a Garnbildelement for an air-spinning machine, which serves to produce a yarn from a fiber structure by means of a swirling air flow, wherein the Garnbildungselement has a spinning tip with an inlet opening in the region by means of the swirling air flow, a yarn can be generated, wherein the Garnbildungselement a The yarn formation element has a discharge channel for a yarn produced in the region of the spinning tip, which extends through the spinning tip and the base body and opens into an outlet via which the yarn produced in the region of the spinning tip emerges from the yarn formation element can escape.
Ferner wird eine Spinndüse für eine Luftspinnmaschine vorgeschlagen, die der Herstellung eines Garns aus einem Faserverband mit Hilfe einer Wirbelluftströmung dient, wobei die Spinndüse eine von einer Wirbelkammerwandung teilweise umgebene Wirbelkammer mit einer Einlaufmündung für einen Faserverband und ein sich zumindest teilweise in die Wirbelkammer erstreckendes Garnbildungselement aufweist, wobei der Wirbelkammer in Richtung einer äußeren Oberfläche des Garnbildungselements ausgerichtete Luftdüsen zugeordnet sind, über die Luft in die Wirbelkammer einbringbar ist, um dem Faserverband im Bereich einer Einlassöffnung des Garnbildungselements eine Drehung zu erteilen, und wobei das Garnbildungselement einen an die Einlassöffnung angrenzenden Abzugskanal aufweist, über den das Garn aus der Wirbelkammer abziehbar ist.Further, a spinneret for an air spinning machine is proposed, which serves to produce a yarn from a fiber structure by means of a vortex air flow, the spinneret having a vortex chamber partially surrounded vortex chamber with an inlet port for a fiber strand and at least partially extending into the vortex chamber yarn formation element in that the vortex chamber is associated with air nozzles directed towards an outer surface of the yarn formation element, via which air can be introduced into the vortex chamber, in order to impart rotation to the fiber structure in the region of an inlet opening of the yarn formation element, and wherein the yarn formation element has a discharge channel adjoining the inlet opening over which the yarn is removable from the vortex chamber.
Ein entsprechend aus Grundkörper und damit verbundener Spinnspitze bestehendes Garnbildungselement ist beispielsweise aus der
Zwar ist durch die Trennung des Garnbildungselements in Grundkörper und Spinnspitze bereits eine Anpassung der Luftspinnmaschine an unterschiedliche Fasermaterialien möglich. Auch kann die einem gewissen Verscheiß unterworfene Spinnspitze ersetzt werden, ohne das gesamte Garnbildungselement austauschen zu müssen. Dennoch besteht auch weiterhin der Bedarf, die im Stand der Technik bekannten Garnbildungselemente hinsichtlich ihrer Wartungs- bzw. Anpassungsfähigkeit an das jeweils vorliegende Fasermaterial zu verbessern.Although the separation of the Garnbildungselements in the base body and spinning tip already an adaptation of the air spinning machine to different fiber materials is possible. Also, the spinner tip subject to some wear can be replaced without having to replace the entire yarn forming member. Nevertheless, there continues to be a need to improve the yarn formation elements known in the prior art with regard to their ability to be maintained or adapted to the fiber material present in each case.
Aufgabe der vorliegenden Erfindung ist es daher, ein Garnbildungselement sowie eine damit ausgerüstete Spinndüse für eine Luftspinnmaschine vorzuschlagen, die dieser Forderung Rechnung tragen.The object of the present invention is therefore to propose a yarn-forming element and a spinneret equipped therewith for an air-spinning machine, which take account of this requirement.
Die Aufgabe wird gelöst durch ein Garnbildungselement sowie eine Spinndüse mit den Merkmalen der unabhängigen Patentansprüche.The object is achieved by a Garnbildungselement and a spinneret with the features of the independent claims.
Erfindungsgemäß zeichnet sich das Garnbildungselement nun dadurch aus, dass die Spinnspitze und der Grundkörper mit Hilfe zumindest einer Schnappverbindung miteinander verbunden sind. An dieser Stelle sei darauf hingewiesen, dass der Grundkörper ein oder mehrteilig ausgebildet sein kann. Gleiches gilt für die Spinnspitze. Insbesondere handelt es sich bei der Spinnspitze um den Abschnitt des Garnbildungselements, der die genannte Einlassöffnung umfasst, während der Grundkörper denjenigen Abschnitt bildet, der den genannten Auslass für das Garn aufweist. In jedem Fall handelt es sich bei dem Grundkörper und der Spinnspitze um separate Einheiten des Garnbildungselements, die mit Hilfe einer oder mehrerer Schnappverbindungen miteinander verbunden sind.According to the invention, the yarn formation element is now distinguished by the fact that the spinning tip and the base body are connected to one another with the aid of at least one snap connection. At this point it should be noted that the main body may be formed one or more parts. The same applies to the spinning tip. In particular, the spinning nib is the portion of the yarn-forming member which includes said inlet opening while the body forms the portion having said outlet for the yarn. In each case acts the main body and the spinning tip are separate units of the yarn-forming element, which are connected to one another with the aid of one or more snap connections.
Bei einer Schnappverbindung im Sinne der Erfindung handelt es sich um eine Verbindung, die ein oder mehrere Funktionselemente zum lösbaren formschlüssigen Verbinden von Spinnspitze und Grundkörper umfasst. Bei der Verbindung von Spinnspitze und Grundkörper verformt sich wenigstens ein Funktionselement elastisch und greift schließlich in ein korrespondierendes weiteres Funktionselement ein. Bei den Funktionselementen kann es sich beispielsweise um elastische Haken- oder Klipselemente handeln, die beim Verbinden in ein korrespondierendes Funktionselement in Form einer Vertiefungen oder Hinterschneidung eingreifen. Ebenso kann als Funktionselement eine Feder zum Einsatz kommen, die eine Kugel oder ein sonstiges Element in eine definierte Richtung mit einer Kraft beaufschlagt. Im Übrigen können ein oder mehrere der vorhandenen Funktionselemente der Schnappverbindung Teil der Spinnspitze und/oder des Grundkörpers sein. Denkbar ist aber auch, dass zumindest ein Funktionselement durch ein weiteres Bauteil des Garnbildungselements, beispielsweise eine unten noch näher beschriebene Hülse, gebildet wird.In the context of the invention, a snap connection is a connection which comprises one or more functional elements for the releasable positive connection of the spinning tip and the base body. When connecting the spinning tip and the base body, at least one functional element deforms elastically and finally engages in a corresponding further functional element. The functional elements may be, for example, elastic hook or clip elements which engage in connection in a corresponding functional element in the form of a depression or undercut. Likewise, as a functional element, a spring can be used, which acts on a ball or another element in a defined direction with a force. Incidentally, one or more of the existing functional elements of the snap connection may be part of the spinning tip and / or of the main body. It is also conceivable, however, that at least one functional element is formed by a further component of the yarn-forming element, for example a sleeve described in more detail below.
In jedem Fall liegt nach dem Verbinden ein Formschluss zwischen wenigstens zwei Funktionselementen der Schnappverbindung vor, der durch Auseinanderziehen von Spinnspitze und Grundelement wieder gelöst werden kann.In any case, after the connection there is a positive connection between at least two functional elements of the snap connection, which can be released again by pulling the spinning tip and the base element apart.
Die Spinnspitze, die während des Spinnbetriebs einer erhöhten mechanischen Belastung durch die an ihrer Oberfläche vorbeiziehenden Fasern ausgesetzt ist, kann hierdurch auf einfache Weise durch eine neue Spinnspitze ersetzt werden.The spinning tip, which is subjected during the spinning operation of an increased mechanical stress by passing on its surface fibers, thereby can be easily replaced by a new spinning tip.
Insbesondere sollte die Schnappverbindung derart ausgebildet sein, dass Spinnspitze und Grundkörper manuell und ohne Einsatz eines Werkzeugs voneinander getrennt werden können.In particular, the snap connection should be designed such that spinning tip and body can be separated manually and without the use of a tool.
Insbesondere sollte die Schnappverbindung zudem derart ausgebildet sein, dass die Trennung dadurch erfolgt, dass Spinnspitze und Grundkörper in einer kolinear zu einer Längsachse des Abzugskanals verlaufenden Richtung auseinandergezogen werden. Die Verbindung erfolgt in diesem Fall vorzugsweise dadurch, dass die genannten Abschnitte des Garnbildungselements in der genannten Richtung aufeinander zubewegt werden, bis die Schnappverbindung einrastet.In particular, the snap connection should also be designed in such a way that the separation takes place in that the spinning tip and the base body are pulled apart in a direction running colinearly to a longitudinal axis of the withdrawal channel. The connection in this case preferably takes place in that the said sections of the yarn formation element are moved toward one another in said direction until the snap-in connection engages.
Ebenso bringt es Vorteile mit sich, wenn die Schnappverbindung ohne Einsatz eines Werkzeugs herstellbar und anschließend ohne Beschädigung der Bauteile des Garnbildungselements wieder lösbar ist.Likewise, it brings advantages when the snap connection without the use of a tool to produce and then without damage to the components of Garnbildungselements is releasable again.
Des Weiteren ist es vorteilhaft, wenn die Schnappverbindung ein Funktionselement in Form eines Sprengrings umfasst. Bei einem Sprengring handelt es sich um einen Sicherungsring mit einer Unterbrechung in Umfangsrichtung. Die grundlegende Form eines Sprengrings ist in
Selbstverständlich kann sich der Sprengring auch auf einer äußeren Oberfläche der Spinnspitze befinden, wobei in diesem Fall der Grundkörper eine innenliegende Oberfläche mit einer entsprechend innenliegenden Vertiefung aufweisen sollte.Of course, the snap ring can also be located on an outer surface of the spinning tip, in which case the base body should have an inner surface with a corresponding inner recess.
Besondere Vorteile bringt es mit sich, wenn die Spinnspitze mit Hilfe einer Hülse am Grundkörper gehalten ist, wobei die Schnappverbindung die Hülse und damit die Spinnspitze am Grundkörper hält. Die Hülse ist in diesem Fall Teil der Schnappverbindung und weist vorzugsweise eine, insbesondere ringförmig ausgebildete, Vertiefung im Bereich einer Innenfläche auf, in die der Sprengring einrastet, wenn die Hülse über die Spinnspitze und schließlich über einen Teil des Grundkörpers geschoben wird. Die Hülse besitzt vorzugsweise eine erste kreisförmige Öffnung, durch die ein Abschnitt des Grundkörpers ragt und eine zweite kreisförmig Öffnung, durch die die Spinnspitze ragt. Die erste Öffnung hat vorzugsweise einen größeren Durchmesser als die zweite Öffnung.It has particular advantages when the spinning tip is held by means of a sleeve on the base body, wherein the snap connection holds the sleeve and thus the spinning tip on the base body. The sleeve is in this case part of the snap connection and preferably has a, in particular ring-shaped, depression in the region of an inner surface into which the snap ring engages when the sleeve is pushed over the spinning tip and finally over part of the base body. The sleeve preferably has a first circular opening through which protrudes a portion of the body and a second circular opening through which the spinning tip protrudes. The first opening preferably has a larger diameter than the second opening.
Insbesondere sollte die Hülse im Bereich der zweiten Öffnung eine Ringschulter aufweiset (d. h. der Innendurchmesser der Hülse sollte sich ausgehend von der zweiten Öffnung in Richtung der ersten Öffnung vergrößern). Weist auch die Spinnspitze eine korrespondierende Ringschulter auf, so kann die Hülse zwar über die Spinnspitze geschoben werden. Die Spinnspitze hat jedoch in diesem Fall einen Außendurchmesser im Bereich ihrer Ringschulter, der größer ist als der Innendurchmesser der zweiten Öffnung. Die Hülse ist in diesem Fall geeignet, die Spinnspitze am Grundkörper zu halten, da die Spinnspitze nicht vollständig durch die Hülse hindurchtreten kann. Vorzugsweise liegt die Spinnspitze direkt oder unter Zwischenschaltung einer Ringdichtung an dem Grundkörper an, wenn die Hülse vollständig auf den Grundkörper aufgeschoben ist.In particular, the sleeve should have an annular shoulder in the region of the second opening (ie the inner diameter of the sleeve should increase starting from the second opening in the direction of the first opening). If the spinning tip also has a corresponding annular shoulder, the sleeve can indeed be pushed over the spinning tip. However, the spinning tip in this case has an outer diameter in the region of its annular shoulder, which is greater than the inner diameter of the second opening. The sleeve is suitable in this case to hold the spinning tip on the body, since the spinning tip can not pass completely through the sleeve. Preferably, the spinning tip is directly or with the interposition of a ring seal on the base body, when the sleeve is completely pushed onto the base body.
Zudem sollten die Hülse und/oder die Spinnspitze rotationssymmetrisch ausgebildet sein. Wird die Hülse beim Zusammenbau über die Spinnspitze und schließlich über einen Abschnitt des Grundkörpers geschoben, so müssen die Spinnspitze und die Hülse gegenüber dem Grundkörper sowie die Hülse gegenüber der Spinnspitze in Umfangsrichtung der genannten Öffnungen der Hülse nicht in einem bestimmten Drehwinkel ausgerichtet werden. Der Zusammenbau des Garnbildungselements wird hierdurch vereinfacht.In addition, the sleeve and / or the spinning tip should be rotationally symmetrical. If the sleeve is pushed over the spinning tip and finally over a portion of the body during assembly, the spinning tip and the sleeve relative to the base body and the sleeve relative to the spinning tip in the circumferential direction of said openings of the sleeve need not be aligned in a certain angle of rotation. The assembly of the yarn formation element is thereby simplified.
Die oben genannten Funktionselemente der Schnappverbindung werden im Übrigen vorzugsweise durch einen Sprengring, der in einer Ringnut des Grundkörpers angeordnet ist und durch eine an der Innenseite der Hülse vorhandene Vertiefung (die vorzugsweise ebenfalls durch eine Ringnut realisiert ist) gebildet, wobei der Sprengring beim Zusammenbau des Garnbildungselements in die Vertiefung der Hülse einschnappt.The above-mentioned functional elements of the snap connection are, moreover, preferably formed by a snap ring, which is arranged in an annular groove of the base body and by a recess provided on the inside of the sleeve (which is preferably also realized by an annular groove), wherein the snap ring during assembly of the Garnbildungselements snaps into the recess of the sleeve.
Vorteile bringt es insbesondere mit sich, wenn zum Lösen der Schnappverbindung bei ortsfest fixiertem Grundkörper eine parallel zum Abzugskanal und in Richtung der Einlassöffnung gerichtete Zugkraft auf die Spinnspitze oder die Hülse ausgeübt werden muss, die wenigstens 30 N, bevorzugt wenigstens 50 N, beträgt. Die Schnappverbindung ist in diesem Fall ausreichend sicher, um ein Lösen der Spinnspitze oder der Hülse vom Grundkörper während des Betriebs einer mit dem Garnbildungselement ausgerüsteten Luftspinnmaschine ausschließen zu können. Ebenso ist es jedoch möglich, die Schnappverbindung mit der Hand und ohne Einsatz eines Werkzeugs zu lösen, so dass die Spinnspitze vor Ort vom Bedienpersonal der Luftspinnmaschine leicht und schnell ausgetauscht werden kann.It brings advantages in particular if, to release the snap connection with fixed fixed body a parallel to the discharge channel and directed towards the inlet opening tensile force on the spinning tip or the sleeve must be exercised, which is at least 30 N, preferably at least 50 N. The snap connection is in this case sufficiently safe to be able to exclude a loosening of the spinning tip or the sleeve from the base body during the operation of an equipped with the Garnbildungselement air spinning machine. However, it is also possible to solve the snap connection by hand and without the use of a tool, so that the spinning tip can be replaced easily and quickly on site by the operator of the air spinning machine.
Insbesondere ist es von Vorteil, wenn die Hülse eine der Spinnspitze abgewandte Öffnung aufweist, wobei die Öffnung kreisförmig ausgebildet ist und wobei die radial verlaufende Wandstärke der Hülse ausgehend von der Öffnung zumindest ein Stück weit in einer kolinear zum Abzugskanal verlaufenden Richtung der Hülse zunimmt. Mit anderen Worten ist die Wandung der Hülse im Bereich der genannten Öffnung (oben bereits als "erste Öffnung" bezeichnet) vorzugsweise konisch ausgebildet. Wenn man die Hülse auf den Grundkörper aufschiebt, so bewirkt die konische Form eine Trichterwirkung und vereinfacht hierdurch das Aufschieben, ohne dass es zu einem Verkanten zwischen Hülse und Grundkörper kommt.In particular, it is advantageous if the sleeve has an opening facing away from the spinning tip, wherein the opening is circular and wherein the radially extending wall thickness of the sleeve increases from the opening at least a little way in a collinear to the discharge channel direction of the sleeve. In other words, the wall of the sleeve in the region of said opening (already referred to above as "first opening") is preferably conical. If one pushes the sleeve onto the base body, the conical shape causes a funnel effect and thereby simplifies the pushing on, without there being a tilting between the sleeve and the base body.
Weist der Grundkörper zudem den oben beschriebenen Sprengring auf, so wird auch das Schieben der Hülse über den Sprengring und dessen Kompression in Radialrichtung vereinfacht.If the base body also has the above-described snap ring, the sliding of the sleeve over the snap ring and its compression in the radial direction are also simplified.
Besonders vorteilhaft ist es, wenn die Hülse eine im Bereich einer Innenwandung der Hülse angeordnete Vertiefung, vorzugsweise in Form einer Ringnut, aufweist, in die sich der Sprengring erstreckt. Die Hülse rastet in diesem Fall beim Aufschieben auf den Grundkörper in der gewünschten Endposition am Grundkörper ein. In zusammengebautem Zustand ist der Sprengring also bevorzugt nach außen hin von einer Ringnut der Hülse und nach innen hin (d. h. in Richtung des Abzugskanals) von einer Ringnut des Grundkörpers umgeben. Beide Ringnuten bilden also einen ringförmigen Kanal, in dem sich der Sprengring befindet.It is particularly advantageous if the sleeve has a recess arranged in the region of an inner wall of the sleeve, preferably in the form of an annular groove, into which the snap ring extends. The sleeve engages in this case when pushed onto the body in the desired end position on the body. In the assembled state, the snap ring is thus preferably outwardly surrounded by an annular groove of the sleeve and inwardly (ie in the direction of the outlet channel) by an annular groove of the base body. Both annular grooves thus form an annular channel in which the snap ring is located.
Ebenso bringt es Vorteile mit sich, wenn der Grundkörper aus Metall, die Spinnspitze zumindest abschnittsweise aus Keramik und die Hülse aus Kunststoff gefertigt sind. Die Hülse kann in diesem Fall besonders kostengünstig hergestellt werden, wobei der Grundkörper und die Spinnspitze die notwendige Steifigkeit bzw. im Fall von Keramik die nötige Verschleißfestigkeit aufweisen.It also brings advantages when the base body made of metal, the spinning tip are at least partially made of ceramic and the sleeve made of plastic. The sleeve can be made particularly cost-effective in this case, wherein the base body and the spinning tip have the necessary rigidity or in the case of ceramic the necessary wear resistance.
Des Weiteren ist es vorteilhaft, wenn zwischen der Spinnspitze und dem Grundkörper ein oder mehrere Dichtungsringe angeordnet sind. Insbesondere sollten der oder die Dichtungsringe (die aus Gummi, Kunststoff oder auch Metall bestehen können) den Abzugskanal, vorzugsweise konzentrisch, umgeben. Vorzugsweise verlaufen der oder die Dichtungsringe auch konzentrisch zu dem genannten Sprengring (falls vorhanden). In jedem Fall wird durch den oder die Dichtungsringe verhindert, dass Luft, die während des Spinnbetriebs durch den Abzugskanal strömt, seitlich zwischen Spinnspitze und Grundkörper austreten kann.Furthermore, it is advantageous if one or more sealing rings are arranged between the spinning tip and the main body. In particular, the sealing ring or rings (which may be made of rubber, plastic or metal) should surround the extraction channel, preferably concentrically. Preferably, the sealing ring (s) are also concentric with said snap ring (if present). In any case, prevented by the one or more sealing rings that air that flows through the discharge channel during the spinning operation, can emerge laterally between the spinning tip and the base body.
Schließlich wird eine Spinndüse vorgeschlagen, die neben einer aus dem Stand der Technik bekannten Wirbelkammer und den für die Wirbelluftströmung beim Spinnbetrieb zuständigen Luftdüsen ein in die Wirbelkammer ragendes Garnbildungselement umfasst. Erfindungsgemäß ist das Garnbildungselement gemäß bisheriger bzw. nachfolgender Beschreibung ausgebildet.Finally, a spinneret is proposed which, in addition to a vortex chamber known from the prior art and the air nozzles responsible for the vortex air flow during the spinning operation, comprises a yarn formation element projecting into the vortex chamber. According to the yarn formation element according to the previous or subsequent description is formed.
Weitere Vorteile der Erfindung sind in den nachfolgenden Ausführungsbeispielen beschrieben. Es zeigen, jeweils schematisch:
-
Figur 1 - eine teilweise geschnittene Darstellung einer erfindungsgemäßen Spinndüse,
-
Figur 2 - einen Längsschnitt eines erfindungsgemäßen Garnbildungselements,
-
Figur 3 - eine Explosionsdarstellung eines erfindungsgemäßen Garnbildungselements, und
-
Figur 4 - einen Längsschnitt eines weiteren erfindungsgemäßen Garnbildungselements.
- FIG. 1
- a partially sectioned view of a spinneret according to the invention,
- FIG. 2
- a longitudinal section of a yarn formation element according to the invention,
- FIG. 3
- an exploded view of a yarn formation element according to the invention, and
- FIG. 4
- a longitudinal section of another yarn formation element according to the invention.
Die Verstreckung übernimmt in der Regel ein dem Faserführungselement 20 vorgelagertes (nicht gezeigtes) Streckwerk der entsprechenden Spinnstelle der Luftspinnmaschine (die in der Regel eine Vielzahl von Spinnstellen umfasst, die wiederum jeweils eine Spinndüse 13 und ein Streckwerk aufweisen), aus dem das verstreckte Faserband mit Hilfe eines ebenfalls nicht gezeigten Abzugswalzenpaars abgezogen wird (alternativ kann der Abzug auch durch andere Mittel, z. B. einer Garnspeicherrolle, erfolgen).The stretching usually takes over the
Nachdem das Fasermaterial das Faserführungselement 20 passiert hat, gelangt es in den Wirkbereich mehrerer, in der Regel tangential in die Wirbelkammer 15 mündenden, Luftdüsen 18, die beispielsweise als Bohrungen innerhalb einer Wirbelkammerwandung 14 vorliegen können. Werden diese während des Spinnbetriebs über eine entsprechende, z. B. in einen Luftkanal 21 mündende, Versorgungsleitung (nicht gezeigt) mit einem Überdruck beaufschlagt, so entsteht eine Wirbelluftströmung, die den eine Einlassöffnung 5 für die Fasern aufweisenden Bereich eines in die Wirbelkammer 15 ragenden Garnbildungselements 1 bzw. dessen äußere Oberfläche 17 umströmt (zumindest ein Teil der eingebrachten Luft verlässt die Wirbelkammer 15 schließlich wieder über einen entsprechenden Luftauslass 19).After the fiber material has passed the
Werden die nach außen abstehenden Faserenden des Faserverbands 3 von dieser Wirbelluftströmung erfasst, so entsteht schließlich die gewünschte Drehung des Fasermaterials und im Ergebnis das gewünschte Garn 2, welches über den sich an die Einlassöffnung 5 anschließenden Abzugskanal 7 aus der Wirbelkammer 15 und letztendlich über einen Auslass 8 aus der Spinndüse 13 abgezogen werden kann.If the outwardly projecting fiber ends of the
Neben einteiligen Garnbildungselementen 1 sind bereits mehrteilige Garnbildungselemente 1 bekannt, die aus einem Grundkörper 6 und einer damit verbundenen Spinnspitze 4 bestehen. Die Verbindung erfolgt in diesen Fällen jedoch stets mit Hilfe von Verschraubungen oder durch einen nicht mehr zu lösenden Presssitz.In addition to one-piece yarn-forming
Im Gegensatz hierzu schlägt die vorliegende Erfindung nun vor, Grundkörper 6 und Spinnspitze 4 mit Hilfe zumindest einer Schnappverbindung zu realisieren.In contrast, the present invention proposes to realize
Eine konstruktive Möglichkeit einer derartigen Verbindung zeigen die
Wie diesen Figuren zu entnahmen ist, kann der Grundkörper 6 eine Vertiefung, vorzugsweise eine Ringnut 12, aufweisen, die der Aufnahme eines Sprengrings 22 dient.As can be seen from these figures, the
Ferner ist eine Hülse 10 vorgesehen, die ebenfalls eine Vertiefung (vorzugsweise in Form einer Ringnut 12) im Bereich ihrer Innenwandung 11 aufweist. Wird die Hülse 10 nun mit der in
Um das Aufschieben und insbesondere das Überziehen der Hülse 10 über den Sprengring 22 zu vereinfachen, kann die genannte Öffnung 9 konisch ausgebildet sein, so dass die Wandstärke D der Hülse 10 ausgehend von der Öffnung 9 allmählich zunimmt.In order to simplify the sliding and in particular the coating of the
Vorzugsweise ist zwischen der Spinnspitze 4 und dem Grundkörper 6 ein Dichtungsring 23 vorhanden, der ein seitliches Austreten von Luft zwischen Grundkörper 6 und Spinnspitze 4 verhindert.Preferably, a sealing
Schließlich zeigt
Auch können anstelle des Sprengrings 22 andere Abschnitte, beispielsweise in Form von Rastelementen, vorhanden sein, die z. B. Teil der Spinnspitze 4, des Grundkörpers 6 und/oder der Hülse 10 sein können.Also, instead of the
Die vorliegende Erfindung ist nicht auf die dargestellten und beschriebenen Ausführungsbeispiele beschränkt. Abwandlungen im Rahmen der Patentansprüche sind ebenso möglich wie eine beliebige Kombination der beschriebenen Merkmale, auch wenn sie in unterschiedlichen Teilen der Beschreibung bzw. den Ansprüchen oder in unterschiedlichen Ausführungsbeispielen dargestellt und beschrieben sind, vorausgesetzt, dass kein Widerspruch zur Lehre der unabhängigen Ansprüche entsteht.The present invention is not limited to the illustrated and described embodiments. Variations within the scope of the claims are also possible as any combination of the features described, even if they are shown and described in different parts of the specification or the claims or in different embodiments, provided that no contradiction arises to the teaching of the independent claims.
- 11
- GarnbildungselementGarnbildungselement
- 22
- Garnyarn
- 33
- Faserverbandfiber structure
- 44
- Spinnspitzespinning top
- 55
- Einlassöffnunginlet port
- 66
- Grundkörperbody
- 77
- Abzugskanalculvert
- 88th
- Auslassoutlet
- 99
- Öffnung der HülseOpening of the sleeve
- 1010
- Hülseshell
- 1111
- Innenwandung der HülseInner wall of the sleeve
- 1212
- Ringnutring groove
- 1313
- Spinndüsespinneret
- 1414
- WirbelkammerwandungWirbelkammerwandung
- 1515
- Wirbelkammerswirl chamber
- 1616
- Einlaufmündung der SpinndüseInlet mouth of the spinneret
- 1717
- äußerer Oberfläche des Garnbildungselementsouter surface of the Garnbildungselements
- 1818
- Luftdüseair nozzle
- 1919
- Luftauslassair outlet
- 2020
- FaserführungselementFiber guide element
- 2121
- Luftkanalair duct
- 2222
- Sprengringsnap ring
- 2323
- Dichtungsringsealing ring
- DD
- Wandstärke der HülseWall thickness of the sleeve
Claims (9)
dass die Spinnspitze (4) und der Grundkörper (6) mit Hilfe zumindest einer Schnappverbindung miteinander verbunden sind, wobei die Spinnspitze (4) mit Hilfe einer Hülse (10) am Grundkörper (6) gehalten ist, und wobei die Schnappverbindung die Hülse (10) und damit die Spinnspitze (4) am Grundkörper (6) hält.Yarn-forming element (1) for an air-jet spinning machine, which serves to produce a yarn (2) from a fiber structure (3) by means of a fluidized air flow,
in that the spinning tip (4) and the base body (6) are connected to one another by means of at least one snap connection, wherein the spinning tip (4) is held on the base body (6) by means of a sleeve (10), and wherein the snap connection engages the sleeve (10 ) and thus the spinning tip (4) on the base body (6) holds.
dass das Garnbildungselement (1) gemäß einem der vorangegangenen Ansprüche ausgebildet ist.Spinneret (13) for an air-jet spinning machine, which serves to produce a yarn (2) from a fiber structure (3) by means of a swirling air flow,
in that the yarn formation element (1) is designed according to one of the preceding claims.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016116693.6A DE102016116693A1 (en) | 2016-09-07 | 2016-09-07 | Garnbildungselement and spinneret for an air-spinning machine |
Publications (2)
Publication Number | Publication Date |
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EP3293294A1 true EP3293294A1 (en) | 2018-03-14 |
EP3293294B1 EP3293294B1 (en) | 2020-10-28 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17189446.2A Active EP3293294B1 (en) | 2016-09-07 | 2017-09-05 | Yarn forming element and spinning nozzle for an air-jet spinning machine |
Country Status (4)
Country | Link |
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EP (1) | EP3293294B1 (en) |
JP (1) | JP7161283B2 (en) |
CN (1) | CN107794607B (en) |
DE (1) | DE102016116693A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108318972A (en) * | 2018-03-14 | 2018-07-24 | 北京宏源四方科技开发有限公司 | A kind of optical fiber connection seal and pressure bearing connector |
EP4043625A1 (en) | 2021-02-10 | 2022-08-17 | Saurer Intelligent Technology AG | Yarn forming element |
Citations (4)
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DE10333411A1 (en) * | 2003-07-15 | 2005-02-03 | Wilhelm Stahlecker Gmbh | Apparatus for producing a spun yarn from a staple fiber strand |
DE102011053837A1 (en) * | 2011-09-21 | 2013-03-21 | Maschinenfabrik Rieter Ag | Spinning tip for a hollow spindle of an air-jet spinning machine |
EP2573219A2 (en) * | 2011-09-21 | 2013-03-27 | Maschinenfabrik Rieter Ag | Thread creation element for a spinning position of an air jet spinning machine and method for preparing a spin process on an air jet spinning machine |
EP3012362A2 (en) * | 2014-09-30 | 2016-04-27 | Murata Machinery, Ltd. | Hollow guide shaft, air-jet spinning device, and textile machinery |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102008050874A1 (en) | 2008-09-29 | 2010-04-01 | Wilhelm Stahlecker Gmbh | Air jet spinning unit with spindle-shaped component |
JP2013067897A (en) * | 2011-09-21 | 2013-04-18 | Murata Mach Ltd | 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 |
CN102912491B (en) * | 2012-11-02 | 2015-08-12 | 东华大学 | A kind of vortex tube internal structure is the air-jet eddy-current spinning spray nozzle device of syllogic |
-
2016
- 2016-09-07 DE DE102016116693.6A patent/DE102016116693A1/en not_active Withdrawn
-
2017
- 2017-09-05 EP EP17189446.2A patent/EP3293294B1/en active Active
- 2017-09-06 CN CN201710797867.8A patent/CN107794607B/en active Active
- 2017-09-07 JP JP2017172182A patent/JP7161283B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10333411A1 (en) * | 2003-07-15 | 2005-02-03 | Wilhelm Stahlecker Gmbh | Apparatus for producing a spun yarn from a staple fiber strand |
DE102011053837A1 (en) * | 2011-09-21 | 2013-03-21 | Maschinenfabrik Rieter Ag | Spinning tip for a hollow spindle of an air-jet spinning machine |
EP2573219A2 (en) * | 2011-09-21 | 2013-03-27 | Maschinenfabrik Rieter Ag | Thread creation element for a spinning position of an air jet spinning machine and method for preparing a spin process on an air jet spinning machine |
EP3012362A2 (en) * | 2014-09-30 | 2016-04-27 | Murata Machinery, Ltd. | Hollow guide shaft, air-jet spinning device, and textile machinery |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108318972A (en) * | 2018-03-14 | 2018-07-24 | 北京宏源四方科技开发有限公司 | A kind of optical fiber connection seal and pressure bearing connector |
EP4043625A1 (en) | 2021-02-10 | 2022-08-17 | Saurer Intelligent Technology AG | Yarn forming element |
Also Published As
Publication number | Publication date |
---|---|
EP3293294B1 (en) | 2020-10-28 |
DE102016116693A1 (en) | 2018-03-08 |
JP7161283B2 (en) | 2022-10-26 |
JP2018040102A (en) | 2018-03-15 |
CN107794607B (en) | 2021-08-10 |
CN107794607A (en) | 2018-03-13 |
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