EP1225258B1 - Process for manufacturing staple fibre yarns - Google Patents

Process for manufacturing staple fibre yarns Download PDF

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Publication number
EP1225258B1
EP1225258B1 EP01126731A EP01126731A EP1225258B1 EP 1225258 B1 EP1225258 B1 EP 1225258B1 EP 01126731 A EP01126731 A EP 01126731A EP 01126731 A EP01126731 A EP 01126731A EP 1225258 B1 EP1225258 B1 EP 1225258B1
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EP
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Prior art keywords
thread
spinning
centrifuge
process according
stage
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German (de)
French (fr)
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EP1225258A1 (en
Inventor
Karl Dr.-Ing. Koltze
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Oerlikon Textile GmbH and Co KG
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Saurer GmbH and Co KG
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H15/00Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/004Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for centrifugal spinning machines

Definitions

  • centrifugal spinning is a well known one Spinning process.
  • centrifugal spinning a distinction is made between two different types of spinning, the one-step spinning and the so-called two-stage spinning.
  • a feed material either a sliver stored in a spinning can or a sliver of fiber as a roving bobbin, is warped in a drafting system in accordance with the desired yarn count and conveyed via an axially displaceable thread guide tube into a spinning centrifuge rotating at high speed.
  • the template material emerging from the mouth of the thread guide tube lies against the inner wall of the centrifuge, forming a thread leg, and is carried along by it. This means that the fiber material is rotated by the rotation of the centrifuge.
  • the thread created by the rotation is given by the axially displaceably mounted thread guide tube on the Filed inner centrifuge wall and forms one there so-called yarn cake.
  • the centrifuge speed and the delivery speed of the stock material are matched to one another in such a way that the thread deposited as a yarn cake already has its full rotation and can be wound in a subsequent work step onto a rewinding tube inserted into the centrifuge.
  • the spinning bobbin created during this rewinding process is later rewound onto a large-volume cheese on a winder connected downstream in the production process.
  • the centrifuge speed and delivery speed of the stock material are selected so that the thread deposited on the inner wall of the centrifuge in the first spinning stage initially only has a part of its final rotation.
  • the partially twisted thread which is stored as a yarn cake, receives the missing twist when it is drawn off from the spinning centrifuge in a second spinning stage and is thereby wound directly onto a package on a winding device.
  • a centrifuge spinning / winding machine is known from DE 40 00 059 A1, the workstations of which each have, inter alia, a spinning centrifuge and an associated winding device.
  • the known device works according to the two-stage spinning process described above. This means that the thread is first partially twisted in a first spinning stage. At the end of the first spinning stage, the feed material is separated in the area of the drafting system. The yarn end of the partially twisted yarn connected to the yarn cake is sucked into a buffer via an injector. The thread end stored in the intermediate store is then connected in a splicing device to a completely twisted thread end retrieved by the cross-wound bobbin. The second spinning stage is then initiated by correspondingly driving the cheese. In this second spinning stage, the partially drawn thread, which has been deposited as a yarn cake in the spinning centrifuge, is pulled out of the centrifuge, provided with its final rotation and wound onto the package.
  • a disadvantage of these known methods is that the yarn connection created in the splicing device, in particular with regard to the yarn structure, always differs significantly from a "normally" spun thread. That is, with the known device it is not possible to produce yarn connections of the same yarn.
  • the Invention Based on the aforementioned prior art, the Invention based on the task, especially for two-stage working spinning centrifuges to develop a process that to improve the yarn quality, especially in the area the connection points, the yarn ends.
  • this object is achieved by a method as described in claim 1.
  • the method according to the invention has the particular advantage that the structure of the junction of two thread ends is almost the same. This means that the new thread is also very similar to yarn in the area of its connection points with regard to fiber orientation / fiber extension / rotation across the cross section. Since the quality criterion "splice-free yarn length" no longer exists due to the production of quasi-equal connection points, the invention also makes it possible to considerably reduce the centrifuge fillings or the centrifuge sizes and thus to achieve a significant saving in drive energy. This means that the method according to the invention leads not only to an increase in the quality of the yarn produced but also to an improvement in the economy of the centrifuge spinning machines concerned.
  • the thread end of the Cross wound bobbin of thread, as in claim 2 set out in a before applying to the original material known preparation device edited.
  • Another way to prepare the thread end is to thin the thread end as described in claim 4.
  • the thread end can also be thinned out in a special preparation tube, which is equipped, for example, with comb-like elements, against which the thread end is struck or along which the thread end is pulled.
  • An alternative way of ensuring that the thread end of the thread unwound from the cross-wound bobbin has less twist than the regular thread before being spun into the stock material is to pull the thread at an increased speed at the end of the second spinning stage (claim 5).
  • the thread, especially the thread end receives less rotation, which later has a positive effect on the connection point during the piecing process.
  • the thread end can be prepared for the subsequent yarn connection process according to the invention by briefly increasing the draft of the drafting unit both during the piecing phase at the beginning of the first spinning stage and at the end of the first spinning stage.
  • the pair of output rollers of the drafting system can be operated for a short time at an increased delivery speed.
  • FIG. 1 is a job schematically Centrifugal spinning / winding machine shown. Such jobs have in addition to one Centrifuge spinning device 1 also a winding device 14 on.
  • Such centrifuge spinning devices 1 known per se generally have a spinning centrifuge 3 which is supported by bearings 4 in a centrifuge housing 2 and is driven by an electric motor 5.
  • the bearings 4 can be designed, for example, as magnetic bearings and in such a case support the spinning centrifuge 3 without contact.
  • a thread guide tube 7 can be lowered, which, when acted upon by a schematically indicated drive 8, executes oscillating movements and at the same time can be raised or lowered in the axial direction.
  • the feed material 6, which was previously drawn to the desired yarn fineness in a drafting device 9 enters the spinning centrifuge 3, is twisted there and deposited as a yarn cake 12 on the inner wall 13 of the spinning centrifuge 3.
  • the spinning device 14 has, as usual, a bobbin frame 25 for rotatably holding a package 15 and a thread guide drum 16 for frictionally driving the package 15.
  • the thread guide drum 16 also ensures the traversing of the finished spun thread 17 during winding onto the cheese 15.
  • a thread preparation device 18 can also be installed, for example in the region of the winding device 14.
  • the thread end of the already completely twisted thread 17 is processed before it is placed against the original material 6, for example by means of a pneumatically actuated preparation tube 19.
  • the thread preparation device 18 is connected to a positive pressure source (not shown), for example via a pneumatic line 20.
  • the drawn original material 6 delivered via the drafting device 6 is conveyed into the spinning centrifuge 3 via the thread guide tube 7, partially twisted and deposited as a yarn cake 12 on the inner wall 13 of the spinning centrifuge 3.
  • the delivery speed of the original material 6 and the rotation speed of the spinning centrifuge 3 are chosen so that the thread 11 deposited as a yarn cake 12 receives only part of its final rotation.
  • FIG. 2 shows a situation in which the centrifuge spinning device 1 is running in the second spinning stage. That is, the partially twisted thread 11 deposited as yarn cake 12 in the spinning centrifuge 3 is drawn off from the spinning centrifuge 3 via the pair of output rollers 10 of the drafting device 9 and thereby receives its final rotation. The drawn-off, finished thread 17 is immediately wound onto a large-volume cheese 15 on the winding device 14.
  • the thread end of the thread 17 connected to the package 15 is spun into the stock material 6 in front of the pair of output rollers 10.
  • the thread end of the thread 17 previously processed in the thread preparation device 18, for example by combing out or untwisting is conveyed in the direction of the spinning centrifuge 3 by the output roller pair 10 of the drafting device 9 running in the conveying direction F and is thereby spun into the stock material 6.
  • FIGS. 4a and 4b works as follows:
  • a so-called sliver stop device 21 is triggered, for example, which prevents the further delivery of the original material 6.
  • the non-driven pressure roller 22 is pivoted about its pivot axis 23 in such a way that it comes to rest on a withdrawal roller 24 rotating in the withdrawal direction A.
  • the take-off roller 24 rotating in take-off direction A in conjunction with the pressure roller 22 lying thereon, ensures that the thread 11 deposited as yarn cake 12 is pulled out of the spinning centrifuge 3 and thereby completely twisted. With this device too, the finished thread 17 is wound in a winding device 14 onto a cheese 15.

Description

Im Zusammenhang mit der Herstellung von Stapelfasergarnen sind verschiedene Spinnverfahren bekannt.Are related to the manufacture of staple fiber yarns known various spinning processes.

Neben dem Ringspinnen und dem Rotorspinnen ist beispielsweise das Zentrifugenspinnen ein seit langem bekanntes Spinnverfahren.In addition to ring spinning and rotor spinning, for example centrifugal spinning is a well known one Spinning process.

Beim Zentrifugenspinnen unterscheidet man dabei zwischen zwei unterschiedlichen Spinnarten, dem Einstufen-Spinnen und dem sogenannten Zweistufen-Spinnen.In centrifugal spinning, a distinction is made between two different types of spinning, the one-step spinning and the so-called two-stage spinning.

Bei beiden Spinnarten wird zunächst ein Vorlagematerial, entweder ein in einer Spinnkanne bevorratetes Faserband oder eine als Vorgarnspule bereitliegende Faserlunte in einem Streckwerk, der gewünschten Garnfeinheit entsprechend, verzogen und über ein axial verschiebbar gelagertes Fadenführungsrohr in eine mit hoher Drehzahl umlaufende Spinnzentrifuge befördert.
Das aus der Mündung des Fadenführungsrohres austretende Vorlagematerial legt sich, unter Bildung eines Garnschenkels, an die Zentrifugeninnenwandung an und wird von dieser mitgenommen.
Das heißt, das Fasermaterial erhält durch die Rotation der Zentrifuge eine Drehung.
In both types of spinning, a feed material, either a sliver stored in a spinning can or a sliver of fiber as a roving bobbin, is warped in a drafting system in accordance with the desired yarn count and conveyed via an axially displaceable thread guide tube into a spinning centrifuge rotating at high speed.
The template material emerging from the mouth of the thread guide tube lies against the inner wall of the centrifuge, forming a thread leg, and is carried along by it.
This means that the fiber material is rotated by the rotation of the centrifuge.

Der durch die Drehungserteilung entstandene Faden wird durch das axial verschiebbar gelagerte Fadenführungsrohr an der Zentrifugeninnenwandung abgelegt und bildet dort einen sogenannten Garnkuchen.The thread created by the rotation is given by the axially displaceably mounted thread guide tube on the Filed inner centrifuge wall and forms one there so-called yarn cake.

Beim Einstufen-Spinnen sind Zentrifugendrehzahl und Liefergeschwindigkeit des Vorlagematerials dabei so aufeinander abgestimmt, daß der als Garnkuchen abgelegte Faden bereits seine volle Drehung aufweist und in einem nachfolgenden Arbeitsschritt auf eine in die Zentrifuge eingeführte Umspulhülse umgewickelt werden kann.
Der bei diesem Umspulprozeß entstehende Spinnkops wird später auf einer im Produktionsablauf nachgeschalteten Spulmaschine auf eine großvolumige Kreuzspule umgespult.
In single-stage spinning, the centrifuge speed and the delivery speed of the stock material are matched to one another in such a way that the thread deposited as a yarn cake already has its full rotation and can be wound in a subsequent work step onto a rewinding tube inserted into the centrifuge.
The spinning bobbin created during this rewinding process is later rewound onto a large-volume cheese on a winder connected downstream in the production process.

Beim Zweistufen-Spinnen sind Zentrifugendrehzahl und Liefergeschwindigkeit des Vorlagematerials so gewählt, daß der in der ersten Spinnstufe an der Zentrifugeninnenwandung abgelegte Faden zunächst nur einen Teil seiner endgültigen Drehung aufweist.
Die fehlende Drehung erhält der als Garnkuchen abgelegte, teilverdrallte Faden, wenn er in einer zweiten Spinnstufe aus der Spinnzentrifuge abgezogen und dabei auf einer Spulvorrichtung direkt auf eine Kreuzspule aufgewickelt wird.
In two-stage spinning, the centrifuge speed and delivery speed of the stock material are selected so that the thread deposited on the inner wall of the centrifuge in the first spinning stage initially only has a part of its final rotation.
The partially twisted thread, which is stored as a yarn cake, receives the missing twist when it is drawn off from the spinning centrifuge in a second spinning stage and is thereby wound directly onto a package on a winding device.

Da sowohl beim einstufigen als auch beim zweistufigen Zentrifugenspinnen die jeweils verbindungslos herstellbare Fadenmenge durch das Volumen des Garnkuchens begrenzt wird, ergibt sich zwangsläufig, daß bei der Herstellung einer Kreuzspule zahlreiche Garnenden miteinander verbunden werden müssen.Since both the one-stage and the two-stage Centrifuge spinning the connectionlessly produced Thread quantity is limited by the volume of the yarn cake, inevitably follows that in the manufacture of a Cross bobbin numerous yarn ends are connected to each other have to.

Durch die DE 40 00 059 A1 ist eine Zentrifugenspinn-/Spulmaschine bekannt, deren Arbeitsstellen unter anderem jeweils eine Spinnzentrifuge sowie eine zugehörige Spulvorrichtung aufweisen.
Die bekannte Einrichtung arbeitet dabei nach dem vorbeschriebenen Zweistufen-Spinnverfahren.
Das heißt, der Faden wird in einer ersten Spinnstufe zunächst teilverdrallt. Am Ende der ersten Spinnstufe wird das Vorlagematerial im Bereich des Streckwerkes getrennt.
Das mit dem Garnkuchen verbundene Garnende des teilverdrallten Fadens wird dabei über einen Injektor in einen Zwischenspeicher gesaugt.
Anschließend wird das im Zwischenspeicher bevorratete Fadenende in einer Spleißvorrichtung mit einem von der Kreuzspule zurückgeholten vollständig verdrallten Fadenende verbunden.
Durch entsprechendes Antreiben der Kreuzspule wird dann die zweite Spinnstufe eingeleitet.
In dieser zweiten Spinnstufe wird der in der Spinnzentrifuge als Garnkuchen abgelegte, teilverzogene Faden aus der Zentrifuge abgezogen, mit seiner endgültigen Drehung versehen und auf die Kreuzspule aufgewickelt.
A centrifuge spinning / winding machine is known from DE 40 00 059 A1, the workstations of which each have, inter alia, a spinning centrifuge and an associated winding device.
The known device works according to the two-stage spinning process described above.
This means that the thread is first partially twisted in a first spinning stage. At the end of the first spinning stage, the feed material is separated in the area of the drafting system.
The yarn end of the partially twisted yarn connected to the yarn cake is sucked into a buffer via an injector.
The thread end stored in the intermediate store is then connected in a splicing device to a completely twisted thread end retrieved by the cross-wound bobbin.
The second spinning stage is then initiated by correspondingly driving the cheese.
In this second spinning stage, the partially drawn thread, which has been deposited as a yarn cake in the spinning centrifuge, is pulled out of the centrifuge, provided with its final rotation and wound onto the package.

Nachteilig bei diesen bekannten Verfahren ist allerdings, daß sich die in der Spleißeinrichtung erstellte Garnverbindung, insbesondere bezüglich der Garnstruktur, stets deutlich von einen "normal" gesponnenen Faden unterscheidet.
Das heißt, mit der bekannten Einrichtung ist eine Herstellung garngleicher Fadenverbindungen nicht möglich.
A disadvantage of these known methods, however, is that the yarn connection created in the splicing device, in particular with regard to the yarn structure, always differs significantly from a "normally" spun thread.
That is, with the known device it is not possible to produce yarn connections of the same yarn.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, insbesondere für zweistufig arbeitende Spinnzentrifugen, ein Verfahren zu entwickeln, das zu einer Verbesserung der Garnqualität, speziell im Bereich der Verbindungsstellen, der Garnenden führt.Based on the aforementioned prior art, the Invention based on the task, especially for two-stage working spinning centrifuges to develop a process that to improve the yarn quality, especially in the area the connection points, the yarn ends.

Diese Aufgabe wird erfindungsgemäß durch ein Verfahren gelöst, wie es im Anspruch 1 beschrieben ist.According to the invention, this object is achieved by a method as described in claim 1.

Vorteilhafte Ausgestaltungen des Verfahrens sind Gegenstand der Unteransprüche.Advantageous embodiments of the method are the subject of subclaims.

Das erfindungsgemäße Verfahren hat insbesondere den Vorteil, daß eine nahezu garngleiche Struktur der Verbindungsstelle zweier Fadenenden entsteht.
Das heißt, der neue Faden ist auch im Bereich seiner Verbindungsstellen hinsichtlich Faserorientierung/Faserausstreckung/Drehung über den Querschnitt sehr garnähnlich.
Da durch die Herstellung quasi garngleicher Verbindungsstellen das Qualitätskriterium "spleißfreie Garnlänge" nicht mehr gegeben ist, wird es durch die Erfindung außerdem möglich, die Zentrifugenfüllungen beziehungsweise die Zentrifugengrößen erheblich zu reduzieren und damit eine deutliche Einsparung von Antriebsenergie zu erzielen.
Das heißt, das erfindungsgemäße Verfahren führt neben einer Steigerung der Qualität des erzeugten Garnes auch zu einer Verbesserung der Wirtschaftlichkeit der betreffenden Zentrifugenspinnmaschinen.
The method according to the invention has the particular advantage that the structure of the junction of two thread ends is almost the same.
This means that the new thread is also very similar to yarn in the area of its connection points with regard to fiber orientation / fiber extension / rotation across the cross section.
Since the quality criterion "splice-free yarn length" no longer exists due to the production of quasi-equal connection points, the invention also makes it possible to considerably reduce the centrifuge fillings or the centrifuge sizes and thus to achieve a significant saving in drive energy.
This means that the method according to the invention leads not only to an increase in the quality of the yarn produced but also to an improvement in the economy of the centrifuge spinning machines concerned.

In vorteilhafter Ausführung wird das Fadenende des von der Kreuzspule abgewickelten Fadens dabei, wie im Anspruch 2 dargelegt, vor dem Anlegen an das Vorlagematerial in einer an sich bekannten Vorbereitungseinrichtung bearbeitet. In an advantageous embodiment, the thread end of the Cross wound bobbin of thread, as in claim 2 set out in a before applying to the original material known preparation device edited.

Das bedeutet, das Fadenende des bereits vollständig verdrallten Fadens wird, beispielsweise in einem Vorbereitungsröhrchen, pneumatisch beaufschlagt.That means the thread end of the already complete twisted thread, for example in one Preparation tube, pneumatically loaded.

In bevorzugter Ausführungsform ist dabei, wie im Anspruch 3 beschrieben, vorgesehen, daß das Fadenende, zum Beispiel durch entsprechendes Anblasen, auf einer bestimmten Fadenlänge, wenigstens teilweise, entdrallt wird.In a preferred embodiment, as in claim 3 described, provided that the thread end, for example by appropriate blowing, on a certain thread length, is at least partially swirled.

Eine weitere Möglichkeit, das Fadenende vorzubereiten, besteht darin, das Fadenende, wie im Anspruch 4 beschrieben, auszudünnen.
Das Ausdünnen des Fadenendes kann dabei ebenfalls in einem speziellen Vorbereitungsröhrchen erfolgen, das zum Beispiel mit kammartigen Elementen ausgestattet ist, gegen die das Fadenende geschlagen wird oder an denen das Fadenende entlang gezogen wird.
Another way to prepare the thread end is to thin the thread end as described in claim 4.
The thread end can also be thinned out in a special preparation tube, which is equipped, for example, with comb-like elements, against which the thread end is struck or along which the thread end is pulled.

Eine alternative Möglichkeit sicherzustellen, daß das Fadenende des von der Kreuzspule abgewickelten Fadens vor dem Einspinnen in das Vorlagematerial weniger Drehung als der reguläre Faden aufweist, besteht darin, daß der Faden am Ende der zweiten Spinnstufe mit einer erhöhten Geschwindigkeit abgezogen wird (Anspruch 5).
Durch die Erhöhung der Abzugsgeschwindigkeit erhält der Faden, speziell das Fadenende, entsprechend weniger Drehung, was sich später beim Anspinnprozeß positiv auf die Verbindungsstelle auswirkt.
An alternative way of ensuring that the thread end of the thread unwound from the cross-wound bobbin has less twist than the regular thread before being spun into the stock material is to pull the thread at an increased speed at the end of the second spinning stage (claim 5).
By increasing the take-off speed, the thread, especially the thread end, receives less rotation, which later has a positive effect on the connection point during the piecing process.

Wie in den Ansprüchen 6 und 7 dargelegt, kann das Fadenende für den späteren, erfindungsgemäßen Garnverbindungsprozeß bereits dadurch vorbereitet werden, daß sowohl während der Anspinnphase zu Beginn der ersten Spinnstufe als auch am Ende der ersten Spinnstufe kurzzeitig der Verzug des Streckwerkes erhöht wird. Zu diesem Zweck kann beispielsweise das Ausgangswalzenpaar des Streckwerkes für eine kurze Zeit mit einer erhöhten Liefergeschwindigkeit betrieben werden.
Auch diese Maßnahmen führen dazu, das Fadenende so vorzubereiten, daß sichergestellt ist, daß die Verbindungsstellen eine nahezu garngleiche Struktur aufweisen.
As stated in claims 6 and 7, the thread end can be prepared for the subsequent yarn connection process according to the invention by briefly increasing the draft of the drafting unit both during the piecing phase at the beginning of the first spinning stage and at the end of the first spinning stage. For this purpose, for example, the pair of output rollers of the drafting system can be operated for a short time at an increased delivery speed.
These measures also lead to the preparation of the thread end in such a way that it is ensured that the connection points have an almost yarn-like structure.

In vorteilhafter Ausführungsform ist außerdem vorgesehen, daß zum Abziehen des in der rotierenden Spinnzentrifuge als Garnkuchen abgelegten, teilversponnenen Fadens entweder, wie im Anspruch 8 dargelegt, die Förderrichtung des Ausgangswalzenpaares des Streckwerkes geändert wird oder daß, wie im Anspruch 9 beschrieben ist, eine in Fadenabzugsrichtung umlaufende Abzugsrolle sowie eine schwenkbar gelagerte Andrückrolle zum Einsatz gebracht wird.
Beide Ausführungsformen gewährleisten einen sicheren Abzug des als Garnkuchen abgelegten, teilverdrallten Fadens in der zweiten Spinnstufe, wobei der Faden während des Abzuges den noch fehlenden Drall erhält.
Der Faden wird dabei gleichzeitig, wie vorstehend bereits angedeutet, in einer Spulvorrichtung auf eine Kreuzspule aufgewickelt.
In an advantageous embodiment it is also provided that, in order to pull off the partially spun thread stored as yarn cake in the rotating spinning centrifuge, either the conveying direction of the pair of output rollers of the drafting device is changed, as described in claim 8, or that, as described in claim 9, one in the thread take-off direction circumferential take-off roller and a swivel-mounted pressure roller is used.
Both embodiments ensure a safe removal of the partially twisted thread stored as a yarn cake in the second spinning stage, the thread receiving the twist which is still missing during the withdrawal.
At the same time, as already indicated above, the thread is wound onto a package in a winding device.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen dargestellten Ausführungsbeispiel entnehmbar.Further details of the invention are as follows based on the drawings embodiment shown removable.

Es zeigt:

Fig. 1
eine zweistufig arbeitende Zentrifugenspinnvorrichtung während der ersten Spinnstufe,
Fig. 2
die Zentrifugenspinnvorrichtung gemäß Figur 1 während der zweiten Spinnstufe,
Fig. 3a - 3c
die Zentrifugenspinnvorrichtung während des Überganges von der ersten in die zweite Spinnstufe,
Fig. 4a
eine alternative Ausführungsform eines Streckwerkes während der ersten Spinnstufe,
Fig. 4b
das Streckwerk gemäß Figur 4a während der zweiten Spinnstufe.
It shows:
Fig. 1
a two-stage centrifuge spinning device during the first spinning stage,
Fig. 2
the centrifuge spinning device according to Figure 1 during the second spinning stage,
3a-3c
the centrifuge spinning device during the transition from the first to the second spinning stage,
Fig. 4a
an alternative embodiment of a drafting system during the first spinning stage,
Fig. 4b
the drafting system according to Figure 4a during the second spinning stage.

In Figur 1 ist schematisch eine Arbeitsstelle einer Zentrifugenspinn-/Spulmaschine dargestellt. Derartige-Arbeitsstellen weisen neben einer Zentrifugenspinnvorrichtung 1 auch eine Spulvorrichtung 14 auf.In Figure 1 is a job schematically Centrifugal spinning / winding machine shown. Such jobs have in addition to one Centrifuge spinning device 1 also a winding device 14 on.

Solche, an sich bekannte Zentrifugenspinnvorrichtungen 1 verfügen in der Regel über eine Spinnzentrifuge 3, die über Lager 4 in einem Zentrifugengehäuse 2 abgestützt und über einen Elektromotor 5 angetrieben ist.
Die Lager 4 können dabei beispielsweise als Magnetlager ausgebildet sein und stützen in einem solchen Fall die Spinnzentrifuge 3 berührungslos ab.
In die Spinnzentrifuge 3 ist ein Fadenführungsrohr 7 absenkbar, das, von einem schematisch angedeuteten Antrieb 8 beaufschlagt, oszillierende Bewegungen ausführt und dabei gleichzeitig in axialer Richtung angehoben oder abgesenkt werden kann.
Über das Fadenführungsrohr 7 gelangt das Vorlagematerial 6, das vorher in einem Streckwerk 9 auf die gewünschte Garnfeinheit verzogen wurde, in die Spinnzentrifuge 3, wird dort verdrallt und als Garnkuchen 12 an der Innenwandung 13 der Spinnzentrifuge 3 abgelegt.
Such centrifuge spinning devices 1 known per se generally have a spinning centrifuge 3 which is supported by bearings 4 in a centrifuge housing 2 and is driven by an electric motor 5.
The bearings 4 can be designed, for example, as magnetic bearings and in such a case support the spinning centrifuge 3 without contact.
In the spinning centrifuge 3, a thread guide tube 7 can be lowered, which, when acted upon by a schematically indicated drive 8, executes oscillating movements and at the same time can be raised or lowered in the axial direction.
Via the thread guide tube 7, the feed material 6, which was previously drawn to the desired yarn fineness in a drafting device 9, enters the spinning centrifuge 3, is twisted there and deposited as a yarn cake 12 on the inner wall 13 of the spinning centrifuge 3.

Die Spinnvorrichtung 14 besitzt, wie üblich, einen Spulenrahmen 25 zum drehbaren Haltern einer Kreuzspule 15 sowie eine Fadenführungstrommel 16 zum reibschlüssigen Antreiben der Kreuzspule 15.
Die Fadenführungstrommel 16 sorgt auch für die Changierung des fertiggesponnenen Fadens 17 während des Aufwickelns auf die Kreuzspule 15.
The spinning device 14 has, as usual, a bobbin frame 25 for rotatably holding a package 15 and a thread guide drum 16 for frictionally driving the package 15.
The thread guide drum 16 also ensures the traversing of the finished spun thread 17 during winding onto the cheese 15.

Wie in Figur 1 weiter angedeutet, kann, beispielsweise im Bereich der Spulvorrichtung 14, außerdem eine Fadenvorbereitungseinrichtung 18 installiert sein.
In der Fadenvorbereitungseinrichtung 18 wird das Fadenende des bereits vollständig verdrallten Fadens 17 vor dessen Anlegen an das Vorlagematerial 6, zum Beispiel mittels eines pneumatisch beaufschlagbaren Vorbereitungsröhrchen 19, bearbeitet.
Die Fadenvorbereitungseinrichtung 18 ist in einem solchen Fall, zum Beispiel über eine Pneumatikleitung 20, an eine (nicht dargestellte) Überdruckquelle angeschlossen.
As further indicated in FIG. 1, a thread preparation device 18 can also be installed, for example in the region of the winding device 14.
In the thread preparation device 18, the thread end of the already completely twisted thread 17 is processed before it is placed against the original material 6, for example by means of a pneumatically actuated preparation tube 19.
In such a case, the thread preparation device 18 is connected to a positive pressure source (not shown), for example via a pneumatic line 20.

Wie vorstehend bereits angedeutet, ist in Figur 1 eine Situation dargestellt, in der die zweistufig arbeitende Zentrifugenspinnvorrichtung 1 in der ersten Spinnstufe läuft. As already indicated above, one is shown in FIG Situation depicted in which the two-stage Centrifuge spinning device 1 runs in the first spinning stage.

Das heißt, das über das Streckwerk 6 angelieferte, verstreckte Vorlagematerial 6 wird über das Fadenführungsrohr 7 in die Spinnzentrifuge 3 befördert, teilverdrallt und als Garnkuchen 12 an der Innenwandung 13 der Spinnzentrifuge 3 abgelegt.
Die Liefergeschwindigkeit des Vorlagematerials 6 und die Rotationsgeschwindigkeit der Spinnzentrifuge 3 sind dabei so gewählt, daß der als Garnkuchen 12 abgelegte Faden 11 nur einen Teil seiner endgültigen Drehung erhält.
This means that the drawn original material 6 delivered via the drafting device 6 is conveyed into the spinning centrifuge 3 via the thread guide tube 7, partially twisted and deposited as a yarn cake 12 on the inner wall 13 of the spinning centrifuge 3.
The delivery speed of the original material 6 and the rotation speed of the spinning centrifuge 3 are chosen so that the thread 11 deposited as a yarn cake 12 receives only part of its final rotation.

Figur 2 zeigt eine Situation, in der die Zentrifugenspinnvorrichtung 1 in der zweiten Spinnstufe läuft. Das heißt, der als Garnkuchen 12 in der Spinnzentrifuge 3 abgelegte, teilverdrallte Faden 11, wird über das Ausgangswalzenpaar 10 des Streckwerkes 9 aus der Spinnzentrifuge 3 abgezogen und erhält dabei seine endgültige Drehung.
Der abgezogene, fertige Faden 17 wird auf der Spulvorrichtung 14 sofort auf eine großvolumige Kreuzspule 15 aufgewickelt.
FIG. 2 shows a situation in which the centrifuge spinning device 1 is running in the second spinning stage. That is, the partially twisted thread 11 deposited as yarn cake 12 in the spinning centrifuge 3 is drawn off from the spinning centrifuge 3 via the pair of output rollers 10 of the drafting device 9 and thereby receives its final rotation.
The drawn-off, finished thread 17 is immediately wound onto a large-volume cheese 15 on the winding device 14.

Funktion des erfindungsgemäßen Verfahrens, erläutert anhand der Figuren 3a bis 3c beziehungsweise der Figuren 4a, 4b:Function of the method according to the invention, explained with reference to of Figures 3a to 3c and Figures 4a, 4b:

Wenn der Garnkuchen 12 innerhalb der Spinnzentrifuge 3, wie in Figur 3a angedeutet, eine vorbestimmte Größe erreicht hat, wird vor dem Ausgangswalzenpaar 10 das Fadenende des mit der Kreuzspule 15 verbundenen Fadens 17 in das Vorlagematerial 6 eingesponnen.
Das heißt, das zuvor in der Fadenvorbereitungseinrichtung 18, zum Beispiel durch Auskämmen oder Entdrallen, bearbeitete Fadenende des Fadens 17 wird durch das in Förderrichtung F laufende Ausgangswalzenpaar 10 des Streckwerkes 9 in Richtung der Spinnzentrifuge 3 befördert und dabei in das Vorlagematerial 6 eingesponnen.
When the yarn cake 12 has reached a predetermined size within the spinning centrifuge 3, as indicated in FIG. 3a, the thread end of the thread 17 connected to the package 15 is spun into the stock material 6 in front of the pair of output rollers 10.
This means that the thread end of the thread 17 previously processed in the thread preparation device 18, for example by combing out or untwisting, is conveyed in the direction of the spinning centrifuge 3 by the output roller pair 10 of the drafting device 9 running in the conveying direction F and is thereby spun into the stock material 6.

Gleichzeitig wird, wie in Figur 4b angedeutet, die weitere Zufuhr von Vorlagematerial 6 gestoppt.
Es werden beispielsweise die Walzenpaare 9', 9'' des Streckwerkes 9 angehalten, was zu einem Abtrennen des Vorlagematerials 6 führt.
At the same time, as indicated in FIG. 4b, the further supply of original material 6 is stopped.
For example, the roller pairs 9 ', 9''of the drafting unit 9 are stopped, which leads to a separation of the original material 6.

Anschließend wird, wie in Fig.3c angedeutet, das Ausgangswalzenpaar 10 auf Abzugsrichtung A umgeschaltet und dadurch der teilversponnene Faden 11 aus der Spinnzentrifuge 3 abgezogen. Während dieses Abzuges erhält der Faden 11 seine endgültige Drehung und wird als Faden 17 auf die Kreuzspule 15 aufgewickelt.Then, as indicated in Fig.3c, the Output roller pair 10 switched to take-off direction A and thereby the partially spun thread 11 from the spinning centrifuge 3 deducted. During this withdrawal, the thread 11 receives its final rotation and is as thread 17 on the cheese 15 wound.

Anstelle des Umschaltens der Förderrichtung des Ausgangswalzenpaares 10 kann auch eine modifizierte Ausführungsform eines Ausgangswalzenpaares zum Einsatz gebracht werden.
Diese alternative, in den Figuren 4a und 4b dargestellte Ausführungsform arbeitet folgendermaßen:
Instead of switching the conveying direction of the output roller pair 10, a modified embodiment of an output roller pair can also be used.
This alternative embodiment, shown in FIGS. 4a and 4b, works as follows:

Nach dem Anspinnen des bearbeiteten Fadenendes des mit der Kreuzspule 15 verbundenen Fadens 17 an das Vorlagematerial 6 wird zum Beispiel eine sogenannte Luntenstoppeinrichtung 21 ausgelöst, die die weitere Lieferung des Vorlagematerials 6 unterbindet.
Gleichzeitig wird die nicht angetriebene Andrückrolle 22 so um ihre Schwenkachse 23 geschwenkt, daß sie auf einer in Abzugsrichtung A umlaufenden Abzugsrolle 24 zur Auflage kommt. Die in Abzugsrichtung A umlaufenden Abzugsrolle 24 sorgt in Verbindung mit der aufliegenden Andrückrolle 22 dafür, daß der als Garnkuchen 12 abgelegte Faden 11 aus der Spinnzentrifuge 3 abgezogen und dabei vollständig verdrallt wird.
Auch bei dieser Einrichtung wird der fertige Faden 17 in der Spulvorrichtung 14 auf eine Kreuzspule 15 aufgewickelt.
After the processed thread end of the thread 17 connected to the cross-wound bobbin 15 is spun onto the original material 6, a so-called sliver stop device 21 is triggered, for example, which prevents the further delivery of the original material 6.
At the same time, the non-driven pressure roller 22 is pivoted about its pivot axis 23 in such a way that it comes to rest on a withdrawal roller 24 rotating in the withdrawal direction A. The take-off roller 24 rotating in take-off direction A, in conjunction with the pressure roller 22 lying thereon, ensures that the thread 11 deposited as yarn cake 12 is pulled out of the spinning centrifuge 3 and thereby completely twisted.
With this device too, the finished thread 17 is wound in a winding device 14 onto a cheese 15.

Claims (9)

  1. A process for manufacturing a staple fibre yarn (17) by means of a spinning centrifuge (3) operating in two stages, a drafting system (9) for drawing a feed material (6), a thread guide tube (7) which extends into the spinning centrifuge (3) and is axially displaceably mounted, and also a winding device (14) for winding a cross-wound bobbin (15),
    characterised in that in each case shortly before the end of the first spinning stage a prepared thread end of a thread (17) unwound from the cross-wound bobbin (15) is pieced to the feed material (6) in front of a pair of front rollers (10) of the drafting system (9) and is pieced onto a partially twisted thread (11) of the first spinning stage,
    in that the further supplied feed material (6) is separated and the direction of travel of the thread is altered,
    and in that then in the second spinning stage the partially spun thread (11) deposited in the spinning centrifuge (3) as yarn cake (12) is drawn out of the spinning centrifuge (3) with further twist insertion and is wound onto the cross-wound bobbin (15).
  2. A process according to Claim 1,
    characterised in that the thread end of the thread (17) unwound from the cross-wound bobbin (15) is treated in a preparation device (18) before being attached to the partially twisted thread (11).
  3. A process according to Claim 2,
    characterised in that the thread end is at least partially untwisted in the preparation device (18).
  4. A process according to Claim 2,
    characterised in that the thread end is thinned in the preparation device (18).
  5. A process according to Claim 1,
    characterised in that the thread (17) is drawn off at an increased speed at the end of the second spinning stage and as a result receives less twist.
  6. A process according to Claim 1,
    characterised in that the drafting of the drafting system (9) is temporarily increased during the piecing phase in the first spinning stage.
  7. A process according to Claim 1,
    characterised in that the drafting of the drafting system (9) is temporarily increased at the end of the first spinning stage.
  8. A process according to Claim 1,
    characterised in that for drawing off the partially spun thread (11) deposited in the spinning centrifuge (3) as spinning cake (12), the conveying direction of the pair of front rollers (10) of the drafting system (9) is changed from (F) to (A).
  9. A process according to Claim 1,
    characterised in that for drawing off the partially spun thread (11) deposited in the spinning centrifuge (3) as yarn cake (12), a tension roller (22) of the pair of front rollers (10) of the drafting system (9) is swivelled onto a draw-off roller (24) that rotates in the draw-off direction (A).
EP01126731A 2001-01-23 2001-11-09 Process for manufacturing staple fibre yarns Expired - Lifetime EP1225258B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102907A DE10102907A1 (en) 2001-01-23 2001-01-23 Process for producing a staple fiber yarn
DE10102907 2001-01-23

Publications (2)

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EP1225258A1 EP1225258A1 (en) 2002-07-24
EP1225258B1 true EP1225258B1 (en) 2004-03-24

Family

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Application Number Title Priority Date Filing Date
EP01126731A Expired - Lifetime EP1225258B1 (en) 2001-01-23 2001-11-09 Process for manufacturing staple fibre yarns

Country Status (7)

Country Link
US (1) US20020095927A1 (en)
EP (1) EP1225258B1 (en)
JP (1) JP2002220748A (en)
CN (1) CN1367279A (en)
DE (2) DE10102907A1 (en)
ES (1) ES2214374T3 (en)
RU (1) RU2002101299A (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN104695071A (en) * 2015-02-28 2015-06-10 南通华强布业有限公司 Negative pressure type compact spinning head-lapping method
CN110295422A (en) * 2018-03-23 2019-10-01 株式会社丰田自动织机 Centrifugal spinning frame

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Publication number Priority date Publication date Assignee Title
JP2013067484A (en) * 2011-09-21 2013-04-18 Murata Machinery Ltd Spinning machine
JP6881345B2 (en) * 2018-02-09 2021-06-02 株式会社豊田自動織機 Pot spinning method and pot spinning machine
DE102018105933A1 (en) * 2018-03-14 2019-09-19 Maschinenfabrik Rieter Ag A method for forming a thread loop and for separating a piece of thread to be attached and a piece of thread to be removed, pressure roller unit and suction nozzle
JP7287126B2 (en) * 2019-06-05 2023-06-06 株式会社豊田自動織機 pot spinning machine
JP7200835B2 (en) * 2019-06-14 2023-01-10 株式会社豊田自動織機 pot spinning machine
DE102019116479A1 (en) * 2019-06-18 2020-12-24 Saurer Spinning Solutions Gmbh & Co. Kg Friction disks for a thread connecting device
CN114990744B (en) * 2022-05-06 2023-05-16 宜城市天舒纺织有限公司 Efficient production device and production method for antibacterial blended yarn

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JPS5830419B2 (en) * 1975-10-08 1983-06-29 東レ株式会社 Gounenshinoseizou Sochi
DD284489A5 (en) * 1989-05-26 1990-11-14 ��@���������@�������k�� SPINNING POWDER FOR PRODUCING STAPLE FIBER YARN
DE4005788A1 (en) * 1990-02-26 1991-08-29 Palitex Project Co Gmbh METHOD FOR STRENGTHENING AND / OR THREADING A PRE-YARN WINDED WITH LOW THREAD TENSION
DE4426897B4 (en) * 1994-07-29 2005-09-01 Saurer Gmbh & Co. Kg A method for rewinding a spun cake in a pot spinning device
DE19531147A1 (en) * 1995-08-24 1997-02-27 Chemnitzer Spinnereimaschinen Centrifuge spinning winder
DE19802653A1 (en) * 1998-01-24 1999-07-29 Schlafhorst & Co W Workstation with a number of centrifuge spinning stations and a bobbin winder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104695071A (en) * 2015-02-28 2015-06-10 南通华强布业有限公司 Negative pressure type compact spinning head-lapping method
CN110295422A (en) * 2018-03-23 2019-10-01 株式会社丰田自动织机 Centrifugal spinning frame
CN110295422B (en) * 2018-03-23 2021-12-07 株式会社丰田自动织机 Centrifugal spinning frame

Also Published As

Publication number Publication date
DE10102907A1 (en) 2002-07-25
US20020095927A1 (en) 2002-07-25
CN1367279A (en) 2002-09-04
EP1225258A1 (en) 2002-07-24
RU2002101299A (en) 2003-07-20
JP2002220748A (en) 2002-08-09
ES2214374T3 (en) 2004-09-16
DE50101756D1 (en) 2004-04-29

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