EP1966421B2 - Open-end spinning rotor for textile machine producing cross-wound packages - Google Patents

Open-end spinning rotor for textile machine producing cross-wound packages Download PDF

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Publication number
EP1966421B2
EP1966421B2 EP06792026.4A EP06792026A EP1966421B2 EP 1966421 B2 EP1966421 B2 EP 1966421B2 EP 06792026 A EP06792026 A EP 06792026A EP 1966421 B2 EP1966421 B2 EP 1966421B2
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EP
European Patent Office
Prior art keywords
rotor
cup
groove
region
open
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EP06792026.4A
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German (de)
French (fr)
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EP1966421B1 (en
EP1966421A1 (en
Inventor
Heinz-Georg Wassenhoven
Brigitte Riede
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Saurer Spinning Solutions GmbH and Co KG
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Saurer Spinning Solutions GmbH and Co KG
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/04—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 contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • D01H4/10—Rotors

Definitions

  • the invention relates to an open-end spinning rotor for a textile machine producing cross-wound bobbins with the features of the preamble of claim 1.
  • Such open-end spinning rotors are, for example, by the EP 1 156 142 B1 and WO 2005/075719 A1 known.
  • the spinning rotors are each supported with their rotor shaft in a magnetic bearing arrangement and driven by a single motor.
  • the magnetic bearing arrangements of these textile machines each consist of a front and a rear bearing point, the bearing points in turn each having axially opposed permanent magnet rings.
  • One of these permanent magnet rings is fixed to the stator, while the other permanent magnet ring rotates with the rotor shaft of the spinning rotor.
  • the rotor cup is releasably connected to the rotor shaft in each case with these spinning rotors. This means that the rotor cup can be replaced if necessary, for example in the event of wear or when changing lots, without the rotor shaft also having to be removed.
  • the detachable connection of the rotor cup to the rotor shaft takes place by means of a coupling device which has a magnetic device for axially locking the rotor cup to the rotor shaft and a mechanical anti-rotation device.
  • the rotor cups of these known spinning rotors are designed such that they have different, relatively high wall thicknesses in their various areas, for example on the fiber slide wall, on the rotor groove and on the rotor base.
  • the high wall thickness in the area of the rotor base of the rotor cup means that these spinning rotors not only have a relatively large moment of inertia, but also that the center of gravity of these spinning rotors overall is relatively far forward, in the area of the front bearing point of the magnetic bearing arrangement.
  • the invention has for its object to provide open-end spinning rotors that are each supported in a magnetic bearing arrangement and are suitable for high speeds, and have a rotor cup which can be fixed interchangeably on the rotor shaft.
  • the inventive design of an open-end spinning rotor with a rotor cup which is manufactured as a thin-walled construction and is designed such that the center of gravity of the rotor cup is arranged in an area which is arranged behind the fiber slide wall, has the advantage that, on the one hand, the moment of inertia of the spinning rotor is minimized and that on the other hand the center of gravity of the rotor cup and thus also the center of mass of the spinning rotor as a whole moves to the rear, that is to say in an area between the bearing points of the magnetic bearing arrangement.
  • the center of gravity of the magnetically mounted spinning rotor according to the invention is positioned in such a way that the front magnetic bearing point is stressed a little less and thus the two bearing points of the magnetic bearing arrangements are loaded more uniformly.
  • the minimization of the moment of inertia of the spinning rotor achieved by the thin-walled construction of the rotor cup also has an advantageous effect on both the run-up time and the braking time of the spinning rotor.
  • the rotor cup has a rotor groove with a round groove base and a short, radially arranged support in the region of the rotor base.
  • a shape of the rotor groove enables a mass distribution of the rotor cup to be achieved which, in conjunction with the respective diameter of the rotor groove, ensures that the center of gravity of the rotor cup is always in an area that is spaced apart from the rotor groove at the level of the inner area of the rotor base or on The height of the connection collar is.
  • the center of gravity of the rotor cup lies in an area starting at the rotor groove, at the level of the rotor base or is arranged at the level of the connection collar.
  • the center of gravity of the rotor cup has in this embodiment the rotor cup from a stop edge of the rotor cup a distance between 5.88 mm and 7.51 mm.
  • the rotor cup in the area of the fiber slide wall, the rotor groove and the rotor base has an almost constant wall thickness of; as set out in claim 4, less than 1 mm.
  • Spinning rotors designed in this way are produced by means of special automatic lathes and are not only distinguished, as already mentioned above, by the fact that they are relatively easy to accelerate and slow down due to their low moment of inertia and have a relatively far-lying and therefore advantageous center of gravity, they also have an extremely precise concentricity. This means that due to the extremely precise concentricity and its relatively low weight, such spinning rotors are predestined for speeds that previously seemed unattainable.
  • FIG. 1 An open-end spinning device 1 with a magnetically mounted and single-motor driven spinning rotor 3 is shown.
  • Such open-end spinning devices 1 are known and for example in the EP 0 972 868 A2 described in some detail.
  • Such open-end spinning devices 1 each have a rotor housing 2, in which the rotor cup 26 of a spinning rotor 3 rotates at high speed.
  • the spinning rotor 3 is preferably driven by an individual electric motor drive 18 and is supported with its rotor shaft 4 in front 27 and rear 28 bearing positions of a magnetic bearing arrangement 5, which position the spinning rotor 3 both in the radial and in the axial direction.
  • the rotor housing 2 which is open towards the front, is closed during the spinning operation by a pivotably mounted cover element 8 and is connected via a corresponding pneumatic line 10 to a vacuum source 11, which generates the spinning vacuum required in the rotor housing 2.
  • a so-called channel plate adapter 12 is inserted into the cover element 8, which has the thread take-off nozzle 13 and the mouth region of the fiber guide channel 14.
  • a thread take-off tube 15 is connected to the thread take-off nozzle 13.
  • an opening roller housing 17 is also fixed.
  • cover element 8 has bearing brackets 19, 20 on the rear for mounting an opening roller 21 or a sliver feed cylinder 22.
  • the opening roller 21 is driven in the region of its whorl 23 by a circumferential, machine-long tangential belt 24, while the (not shown) drive of the sliver feed cylinder 22 is preferably carried out via a worm gear arrangement which is connected to a machine-long drive shaft 25.
  • the opening roller 21 and / or the fiber ribbon feed cylinder 22 can of course also be driven in each case via a single drive, for example a stepper motor.
  • the coupling device 29 consists, for example, of a magnetic device for axially fixing the components and a mechanical anti-rotation device.
  • the rotor cup 26, which is designed as a thin-walled construction, has one in the region of its rotor base 6
  • Connection collar 7 with a bore 41, in which, preferably via a press fit, a connection bolt 9 is fixed.
  • the connecting bolt 9 is preferably made at least in its end region from a ferromagnetic material and divided into two sections of approximately the same length, preferably a cylindrical guide section 38 and a section designed as an external polygon 36.
  • a receiving sleeve 34 is fixed which, in addition to the rotor-side permanent magnet ring 39 of the front bearing point 27 of the magnetic bearing arrangement 5, also has a non-rotatably arranged inner polygon 35 and a permanent magnet insert 32.
  • the receiving sleeve 34 also has a cylindrical bore 37, which corresponds to the guide section 38 of the connecting bolt 9 in the installed state.
  • the rotor cups 26 of the spinning rotor 3 shown have, as usual, a rotor opening 30 arranged on the front, a fiber slide wall 31 starting at the rotor opening 30 and diverging towards the rear, a rotor groove 33A or 33B and a rotor base 6 with an integrally formed connecting collar 7.
  • connection bolt 9 can be fixed in a bore 41 of the connection collar 7, preferably via a press fit.
  • the rotor cups 26 are designed as thin-walled components which have an almost constant wall thickness WS in the area of the fiber slide wall 31, the rotor groove 33 and the rotor base 6.
  • the rotor cup 26 of the Figure 3 differs from the rotor cup 26 according to the Figure 4 essentially by the shape of their rotor groove 33A or 33B.
  • the illustrated rotor cup 26, a so-called T-rotor, has a pointed rotor groove 33B with a relatively long, radially arranged support 40B in the region of the rotor base 6.
  • Rotor cups 26 designed in this way are relatively insensitive to dirt deposits.
  • 26 yarns can be produced with such rotor cups, which are similar in ring structure to yarn volume and volume.
  • the distance d or d 1 of the center of gravity of the rotor cup 26 from the stop edge 60 of the rotor cup 26 is preferably between 5.88 mm and 7.51 mm in these rotors.
  • the illustrated rotor cup 26, a so-called G-rotor, has a rotor groove 33A which is less pointed than a T-rotor and which also has only a relatively short, radially arranged support 40A.
  • Rotor cups 26 designed in this way are clearly more sensitive to dirt deposits, but allow the production of a voluminous, soft yarn.
  • G-rotors have the center of gravity of the rotor cup at a distance b or b 1 from a stop edge of the rotor cup, which is between 5.75 mm and 7.06 mm.

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

Description

Die Erfindung betrifft einen Offenend-Spinnrotor für eine Kreuzspulen herstellende Textilmaschine mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to an open-end spinning rotor for a textile machine producing cross-wound bobbins with the features of the preamble of claim 1.

Derartige Offenend-Spinnrotoren sind beispielsweise durch die EP 1 156 142 B1 und WO 2005/075719 A1 bekannt.
Bei diesen Kreuzspulen herstellenden Textilmaschinen sind die Spinnrotoren mit ihrem Rotorschaft jeweils in einer Magnetlageranordnung abgestützt und einzelmotorisch angetrieben.
Die Magnetlageranordnungen dieser Textilmaschinen bestehen dabei jeweils aus einer vorderen und einer hinteren Lagerstelle, wobei die Lagerstellen ihrerseits jeweils über sich axial gegenüberstehende Permanentmagnetringe verfügen. Einer dieser Permanentmagnetringe ist am Stator festgelegt, während der andere Permanentmagnetring mit dem Rotorschaft des Spinnrotors umläuft.Such open-end spinning rotors are, for example, by the EP 1 156 142 B1 and WO 2005/075719 A1 known.
In these textile machines producing cross-wound bobbins, the spinning rotors are each supported with their rotor shaft in a magnetic bearing arrangement and driven by a single motor.
The magnetic bearing arrangements of these textile machines each consist of a front and a rear bearing point, the bearing points in turn each having axially opposed permanent magnet rings. One of these permanent magnet rings is fixed to the stator, while the other permanent magnet ring rotates with the rotor shaft of the spinning rotor.

Da der Ein- oder Ausbau des Rotorschaftes derartig gelagerter Spinnrotoren einen nicht unerheblichen Montageaufwand erfordert, ist bei diesen Spinnrotoren die Rotortasse jeweils lösbar mit dem Rotorschaft verbunden.
Das heißt, die Rotortasse kann bei Bedarf, zum Beispiel bei einem Verschleiß oder bei einem Partiewechsel, ausgewechselt werden, ohne dass dabei auch der Rotorschaft mit ausgebaut werden muss.Since the installation or removal of the rotor shaft of such spinning rotors requires a not inconsiderable assembly effort, the rotor cup is releasably connected to the rotor shaft in each case with these spinning rotors.
This means that the rotor cup can be replaced if necessary, for example in the event of wear or when changing lots, without the rotor shaft also having to be removed.

Die lösbare Anbindung der Rotortasse an den Rotorschaft erfolgt dabei mittels einer Kupplungsvorrichtung, die eine Magneteinrichtung zur axialen Arretierung der Rotortasse am Rotorschaft sowie eine mechanische Verdrehsicherung aufweist. Die Rotortassen dieser bekannten Spinnrotoren sind dabei so ausgebildet, dass sie in ihren verschiedenen Bereichen, beispielsweise an der Faserrutschwand, an der Rotorrille und am Rotorboden, unterschiedliche, relativ hohe Wandstärken aufweisen.
Insbesondere die hohe Wandstärke im Bereich des Rotorbodens der Rotortasse führt dazu, dass diese Spinnrotoren nicht nur ein verhältnismäßig großes Trägheitsmoment aufweisen, sondern auch dazu, dass der Massenschwerpunkt dieser Spinnrotoren insgesamt relativ weit vorne, im Bereich der vorderen Lagerstelle der Magnetlageranordnung liegt.
Insbesondere bei solchen magnetisch gelagerten Spinnrotoren ist es bezüglich der Lagefixierung des Spinnrotors steuerungstechnisch allerdings ungünstig, wenn der Massenschwerpunkt des Spinnrotors zu nahe im Bereich einer der Lagerstelle, im vorliegenden Fall im Bereich der vorderen Lagerstelle der Permanentlageranordnung, angeordnet ist.The detachable connection of the rotor cup to the rotor shaft takes place by means of a coupling device which has a magnetic device for axially locking the rotor cup to the rotor shaft and a mechanical anti-rotation device. The rotor cups of these known spinning rotors are designed such that they have different, relatively high wall thicknesses in their various areas, for example on the fiber slide wall, on the rotor groove and on the rotor base.
In particular, the high wall thickness in the area of the rotor base of the rotor cup means that these spinning rotors not only have a relatively large moment of inertia, but also that the center of gravity of these spinning rotors overall is relatively far forward, in the area of the front bearing point of the magnetic bearing arrangement.
In particular with such magnetically mounted spinning rotors, it is control-technically unfavorable with regard to the position fixing of the spinning rotor if the center of gravity of the spinning rotor is too close to one of the bearing points, in the present case in the area of the front bearing point of the permanent bearing arrangement.

Des weiteren sind durch die DE 199 10 277 A1 Offenend-Spinnvorrichtungen bekannt, deren Spinnrotoren jeweils über einen Rotorschaft auf einer Stützscheibenlagerung abgestützt sind und deren Rotortassen sich durch eine strömungsgünstige Kontur sowie ein geringes Gewicht auszeichnen.
Der Spinnrotor ist dabei allerdings einteilig ausgebildet, das heißt, eine Trennung von Rotortasse und Rotorschaft ist, ohne dass die Rotortasse und/oder der Rotorschaft beschädigt wird, kaum möglich.Furthermore, through the DE 199 10 277 A1 Open-end spinning devices are known, the spinning rotors of which are each supported by a rotor shaft on a support disk bearing, and the rotor cups of which are distinguished by a streamlined contour and a low weight.
The spinning rotor is, however, formed in one piece, that is to say it is hardly possible to separate the rotor cup and the rotor shaft without damaging the rotor cup and / or the rotor shaft.

Weiterhin sind mechanisch abgestützte Spinnrotoren mit Rotortassen wie der von der Firma Rieter unter der Bezeichnung Rotor 33-XG-BD-AE laufende Rotorteller bekannt.Mechanically supported spinning rotors with rotor cups are also known, such as the rotor plate that Rieter uses under the name Rotor 33-XG-BD-AE.

Ausgehend vom vorgenannten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, Offenend-Spinnrotoren zu schaffen, die jeweils in einer Magnetlageranordnung abgestützt und für hohe Drehzahlen geeignet sind, sowie eine am Rotorschaft auswechselbar festlegbare Rotortasse aufweisen.Starting from the aforementioned prior art, the invention has for its object to provide open-end spinning rotors that are each supported in a magnetic bearing arrangement and are suitable for high speeds, and have a rotor cup which can be fixed interchangeably on the rotor shaft.

Außerdem soll gewährleistet sein, dass sich der steuerungstechnische Aufwand zur Lagefixierung dieser Spinnrotoren während des Spinnbetriebes in vertretbaren Grenzen hält.In addition, it should be ensured that the control engineering effort for fixing the position of these spinning rotors during the spinning operation is within reasonable limits.

Diese Aufgabe wird erfindungsgemäß durch Offenend-Spinnrotoren gelöst, die die im Anspruch 1 sowie Anspruch 2 beschriebenen Merkmale aufweisen.According to the invention, this object is achieved by open-end spinning rotors which have the features described in claims 1 and 2.

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Die erfindungsgemäße Ausbildung eines Offenend-Spinnrotors mit einer Rotortasse, die als dünnwandige Konstruktion gefertigt und so ausgebildet ist, dass der Massenschwerpunkt der Rotortasse in einem Bereich angeordnet ist, der hinter der Faserrutschwand angeordnet ist, hat den Vorteil, dass einerseits das Trägheitsmoment des Spinnrotors minimiert wird und dass anderseits der Massenschwerpunkt der Rotortasse und damit auch der Massenschwerpunkt des Spinnrotors insgesamt nach hinten, das heißt, in einen Bereich zwischen den Lagerstellen der Magnetlageranordnung wandert.
Dadurch wird der Massenschwerpunkt des erfindungsgemäßen, magnetisch gelagerten Spinnrotors so positioniert, dass die vordere Magnetlagerstelle etwas weniger beansprucht und damit die beiden Lagerstellen der Magnetlageranordnungen gleichmäßiger belastet werden.The inventive design of an open-end spinning rotor with a rotor cup, which is manufactured as a thin-walled construction and is designed such that the center of gravity of the rotor cup is arranged in an area which is arranged behind the fiber slide wall, has the advantage that, on the one hand, the moment of inertia of the spinning rotor is minimized and that on the other hand the center of gravity of the rotor cup and thus also the center of mass of the spinning rotor as a whole moves to the rear, that is to say in an area between the bearing points of the magnetic bearing arrangement.
As a result, the center of gravity of the magnetically mounted spinning rotor according to the invention is positioned in such a way that the front magnetic bearing point is stressed a little less and thus the two bearing points of the magnetic bearing arrangements are loaded more uniformly.

Eine solche, insbesondere durch die Ausbildung der Rotortasse erzielte Anordnung des Massenschwerpunktes des Spinnrotors vereinfacht die Ansteuerung der Magnetlageranordnung erheblich, was sich positiv auf die Kosten einer solchen Steuerung sowie auch auf die Laufsicherheit des Spinnrotors während des Spinnbetriebes auswirkt.Such an arrangement of the center of gravity of the spinning rotor, which is achieved in particular by the design of the rotor cup, considerably simplifies the actuation of the magnetic bearing arrangement, which has a positive effect on the costs of such a control and also on the running reliability of the spinning rotor during spinning operation.

Die durch die dünnwandige Konstruktion der Rotortasse erreichte Minimierung des Trägheitsmoments des Spinnrotors wirkt sich außerdem vorteilhaft sowohl auf die Hochlaufzeit als auch auf die Bremszeit des Spinnrotors aus.The minimization of the moment of inertia of the spinning rotor achieved by the thin-walled construction of the rotor cup also has an advantageous effect on both the run-up time and the braking time of the spinning rotor.

Wie im Anspruch 1 ferner beschrieben, ist vorgesehen, dass die Rotortasse eine Rotorrille mit einem runden Rillengrund und einer kurzen, radial angeordneten Abstützung im Bereich des Rotorbodens aufweist.
Durch eine solche Form der Rotorrille kann eine Massenverteilung der Rotortasse erreicht werden, die in Verbindung mit dem jeweiligen Durchmesser der Rotorrille dafür sorgt, dass der Massenschwerpunkt der Rotortasse stets in einem Bereich liegt, der beabstandet zur Rotorrille auf Höhe des Innenbereiches des Rotorbodens bzw. auf Höhe des Anschlussbundes liegt.As further described in claim 1, it is provided that the rotor cup has a rotor groove with a round groove base and a short, radially arranged support in the region of the rotor base.
Such a shape of the rotor groove enables a mass distribution of the rotor cup to be achieved which, in conjunction with the respective diameter of the rotor groove, ensures that the center of gravity of the rotor cup is always in an area that is spaced apart from the rotor groove at the level of the inner area of the rotor base or on The height of the connection collar is.

Bei dieser beschriebenen Ausführungsform einer Rotortasse gelingt es, den Massenschwerpunkt der Rotortasse bis nahe an den Bereich des Anschlussbundes bzw. in den Bereich des Anschlussbundes der Rotortasse zu legen.
Der Abstand zur Anschlagkante der Rotortasse beträgt dabei zwischen 5,75 mm und 7,06 mm.In this described embodiment of a rotor cup, it is possible to place the center of gravity of the rotor cup close to the area of the connection collar or in the area of the connection collar of the rotor cup.
The distance to the stop edge of the rotor cup is between 5.75 mm and 7.06 mm.

Bei einer Rotortasse, deren Rotorrille einen spitzen Rillengrund und eine relativ lange, radial angeordnete Abstützung im Bereich des Rotorbodens aufweist, liegt der Massenschwerpunkt der Rotortasse, wie im Anspruch 2 dargelegt, in einem Bereich, der an der Rotorrille beginnend, auf Höhe des Rotorbodens bzw. auf Höhe des Anschlussbundes angeordnet ist.In the case of a rotor cup, the rotor groove of which has a pointed groove base and a relatively long, radially arranged support in the area of the rotor base, the center of gravity of the rotor cup, as set out in claim 2, lies in an area starting at the rotor groove, at the level of the rotor base or is arranged at the level of the connection collar.

Der Massenschwerpunkt der Rotortasse weist bei dieser Ausführungsform der Rotortasse von einer Anschlagkante der Rotortasse einen Abstand zwischen 5,88 mm und 7,51 mm auf.The center of gravity of the rotor cup has in this embodiment the rotor cup from a stop edge of the rotor cup a distance between 5.88 mm and 7.51 mm.

Wie im Anspruch 3 beschrieben, weist die Rotortasse im Bereich der Faserrutschwand, der Rotorrille sowie des Rotorbodens eine nahezu konstante Wandstärke von; wie im Anspruch 4 dargelegt, unter 1 mm auf.
Solchermaßen ausgebildete Spinnrotoren werden mittels spezieller Drehautomaten hergestellt und zeichnen sich nicht nur, wie vorstehend bereits erwähnt, dadurch aus, dass sie aufgrund ihres geringen Trägheitsmomentes relativ leicht zu beschleunigen und abzubremsen sind sowie einen verhältnismäßig weit hinten liegenden und damit vorteilhaften Massenschwerpunkt aufweisen, sie weisen auch einen äußerst präzisen Rundlauf auf.
Das bedeutet, aufgrund des äußerst präzisen Rundlaufes sowie ihres relativ geringen Gewichts sind solche Spinnrotoren für Drehzahlen, die bislang nicht erreichbar schienen, prädestiniert.As described in claim 3, the rotor cup in the area of the fiber slide wall, the rotor groove and the rotor base has an almost constant wall thickness of; as set out in claim 4, less than 1 mm.
Spinning rotors designed in this way are produced by means of special automatic lathes and are not only distinguished, as already mentioned above, by the fact that they are relatively easy to accelerate and slow down due to their low moment of inertia and have a relatively far-lying and therefore advantageous center of gravity, they also have an extremely precise concentricity.
This means that due to the extremely precise concentricity and its relatively low weight, such spinning rotors are predestined for speeds that previously seemed unattainable.

Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen erläuterten Ausführungsbeispiel entnehmbar.Further details of the invention can be found in an exemplary embodiment explained below with reference to the drawings.

Es zeigt:

Fig. 1
eine Seitenansicht einer Offenend-Spinnvorrichtung mit einem erfindungsgemäßen Spinnrotor, der mit seinem Rotorschaft in einer Magnetlageranordnung abgestützt und einzelmotorisch angetrieben ist, wobei die Rotortasse des Spinnrotors über eine Kupplungsvorrichtung leicht lösbar an den Rotorschaft angeschlossen ist,
Fig. 2
den erfindungsgemäßen Spinnrotor in perspektivischer Darstellung, wobei die Rotortasse mit ihrem Anschlussbolzen getrennt vom Rotorschaft des Spinnrotors dargestellt ist,
Fig. 3
eine erste Ausführungsform einer Rotortasse mit einem im Anschlussbund der Rotortasse festgelegten Anschlussbolzen,
Fig. 4
eine weitere Ausführungsform einer Rotortasse, ebenfalls mit einem im Anschlussbund der Rotortasse festgelegten Anschlussbolzen.
It shows:
Fig. 1
2 shows a side view of an open-end spinning device with a spinning rotor according to the invention, which is supported with its rotor shaft in a magnetic bearing arrangement and is driven by a single motor, the rotor cup of the spinning rotor being easily detachably connected to the rotor shaft via a coupling device,
Fig. 2
the spinning rotor according to the invention in a perspective view, the rotor cup with its connecting bolt being shown separately from the rotor shaft of the spinning rotor,
Fig. 3
1 a first embodiment of a rotor cup with a connection bolt fixed in the connection collar of the rotor cup,
Fig. 4
a further embodiment of a rotor cup, also with a connecting bolt fixed in the connection collar of the rotor cup.

In Figur 1 ist eine Offenend-Spinnvorrichtung 1 mit einem magnetisch gelagerten und einzelmotorisch angetriebenen Spinnrotor 3 dargestellt.In Figure 1 An open-end spinning device 1 with a magnetically mounted and single-motor driven spinning rotor 3 is shown.

Derartige Offenend-Spinnvorrichtungen 1 sind bekannt und beispielsweise in der EP 0 972 868 A2 relativ ausführlich beschrieben.Such open-end spinning devices 1 are known and for example in the EP 0 972 868 A2 described in some detail.

Solche Offenend-Spinnvorrichtungen 1 verfügen jeweils über ein Rotorgehäuse 2, in dem die Rotortasse 26 eines Spinnrotors 3 mit hoher Drehzahl umläuft.Such open-end spinning devices 1 each have a rotor housing 2, in which the rotor cup 26 of a spinning rotor 3 rotates at high speed.

Der Spinnrotor 3 wird dabei vorzugsweise durch einen elektromotorischen Einzelantrieb 18 angetrieben und ist mit seinem Rotorschaft 4 in vorderen 27 und hinteren 28 Lagerstellen einer magnetischen Lageranordnung 5 abgestützt, die den Spinnrotor 3 sowohl in radialer als auch in axialer Richtung positionieren.The spinning rotor 3 is preferably driven by an individual electric motor drive 18 and is supported with its rotor shaft 4 in front 27 and rear 28 bearing positions of a magnetic bearing arrangement 5, which position the spinning rotor 3 both in the radial and in the axial direction.

Das nach vorne hin an sich offene Rotorgehäuse 2 ist während des Spinnbetriebes durch ein schwenkbar gelagertes Deckelelement 8 verschlossen und über eine entsprechende Pneumatikleitung 10 an eine Unterdruckquelle 11 angeschlossen, die den im Rotorgehäuse 2 notwendigen Spinnunterdruck erzeugt.The rotor housing 2, which is open towards the front, is closed during the spinning operation by a pivotably mounted cover element 8 and is connected via a corresponding pneumatic line 10 to a vacuum source 11, which generates the spinning vacuum required in the rotor housing 2.

In das Deckelelement 8 ist ein sogenannter Kanalplattenadapter 12 eingelassen, der die Fadenabzugsdüse 13 sowie den Mündungsbereich des Faserleitkanales 14 aufweist.A so-called channel plate adapter 12 is inserted into the cover element 8, which has the thread take-off nozzle 13 and the mouth region of the fiber guide channel 14.

An die Fadenabzugsdüse 13 schließt sich dabei, wie üblich, ein Fadenabzugsröhrchen 15 an.As usual, a thread take-off tube 15 is connected to the thread take-off nozzle 13.

Am Deckelelement 8, das um eine Schwenkachse 16 begrenzt drehbar gelagert ist, ist außerdem ein Auflösewalzengehäuse 17 festgelegt.On the cover element 8, which is rotatably supported to a limited extent about a pivot axis 16, an opening roller housing 17 is also fixed.

Des Weiteren weist das Deckelelement 8 rückseitige Lagerkonsolen 19, 20 zur Lagerung einer Auflösewalze 21 beziehungsweise eines Faserbandeinzugszylinders 22 auf.Furthermore, the cover element 8 has bearing brackets 19, 20 on the rear for mounting an opening roller 21 or a sliver feed cylinder 22.

Die Auflösewalze 21 wird dabei im Bereich ihres Wirtels 23 durch einen umlaufenden, maschinenlangen Tangentialriemen 24 angetrieben, während der (nicht dargestellte) Antrieb des Faserbandeinzugszylinders 22 vorzugsweise über eine Schneckengetriebeanordnung erfolgt, die auf eine maschinenlange Antriebswelle 25 geschaltet ist.The opening roller 21 is driven in the region of its whorl 23 by a circumferential, machine-long tangential belt 24, while the (not shown) drive of the sliver feed cylinder 22 is preferably carried out via a worm gear arrangement which is connected to a machine-long drive shaft 25.

In alternativer Ausführungsform können die Auflösewalze 21 und/oder der Faserbandeinzugszylinder 22 selbstverständlich auch jeweils über einen Einzelantrieb, beispielsweise einen Schrittmotor, angetrieben werden.In an alternative embodiment, the opening roller 21 and / or the fiber ribbon feed cylinder 22 can of course also be driven in each case via a single drive, for example a stepper motor.

Wie insbesondere in Figur 2 dargestellt, ist die Rotortasse 26 des Spinnrotors 3 über eine insgesamt mit der Bezugszahl 29 gekennzeichnete Kupplungsvorrichtung, bei Bedarf leicht lösbar, mit dem Rotorschaft 4 des Spinnrotors 3 verbunden.As especially in Figure 2 is shown, the rotor cup 26 of the spinning rotor 3 via a coupling device, generally identified by the reference number 29, easily detachable if required, with the rotor shaft 4 of the Spinning rotor 3 connected.

Die Kupplungsvorrichtung 29 besteht dabei beispielsweise aus einer Magneteinrichtung zur axialen Fixierung der Bauteile sowie einer mechanischen Verdrehsicherung.The coupling device 29 consists, for example, of a magnetic device for axially fixing the components and a mechanical anti-rotation device.

Das heißt, die als dünnwandige Konstruktion ausgebildete Rotortasse 26 weist im Bereich ihres Rotorbodens 6 einenThis means that the rotor cup 26, which is designed as a thin-walled construction, has one in the region of its rotor base 6

Anschlussbund 7 mit einer Bohrung 41 auf, in der, vorzugsweise über einen Presssitz, ein Anschlussbolzen 9 festgelegt ist.Connection collar 7 with a bore 41, in which, preferably via a press fit, a connection bolt 9 is fixed.

Der Anschlussbolzen 9 ist dabei vorzugsweise wenigstens in seinem Endbereich aus einem ferromagnetischen Material gefertigt und in zwei etwa gleich lange Abschnitte, vorzugsweise einen zylindrischen Führungsabschnitt 38 und einen als Außenmehrkant 36 ausgebildeten Abschnitt aufgeteilt.The connecting bolt 9 is preferably made at least in its end region from a ferromagnetic material and divided into two sections of approximately the same length, preferably a cylindrical guide section 38 and a section designed as an external polygon 36.

Wie in Figur 2 weiter angedeutet, ist im rohrförmigen Rotorschaft 4, vorzugsweise ebenfalls über einen Presssitz, eine Aufnahmehülse 34 festgelegt, die außer dem rotorseitigen Permanentmagnetring 39 der vorderen Lagerstelle 27 der Magnetlageranordnung '5 auch einen drehfest angeordneten Innenmehrkant 35 sowie einen Permanentmagneteinsatz 32 aufweist. Die Aufnahmehülse 34 weist des weiteren eine zylindrische Bohrung 37 auf, die im Einbauzustand mit dem Führungsabschnitt 38 des Anschlussbolzens 9 korrespondiert.As in Figure 2 further indicated, in the tubular rotor shaft 4, preferably also by means of a press fit, a receiving sleeve 34 is fixed which, in addition to the rotor-side permanent magnet ring 39 of the front bearing point 27 of the magnetic bearing arrangement 5, also has a non-rotatably arranged inner polygon 35 and a permanent magnet insert 32. The receiving sleeve 34 also has a cylindrical bore 37, which corresponds to the guide section 38 of the connecting bolt 9 in the installed state.

Die in den Figuren 3 und 4 dargestellten Rotortassen 26 des Spinnrotors 3 verfügen, wie üblich, über eine frontseitig angeordnete Rotoröffnung 30, eine an der Rotoröffnung 30 beginnende, nach hinten divergierende Faserrutschwand 31, eine Rotorrille 33A bzw. 33B sowie einen Rotorboden 6 mit angeformtem Anschlussbund 7.The in the Figures 3 and 4 The rotor cups 26 of the spinning rotor 3 shown have, as usual, a rotor opening 30 arranged on the front, a fiber slide wall 31 starting at the rotor opening 30 and diverging towards the rear, a rotor groove 33A or 33B and a rotor base 6 with an integrally formed connecting collar 7.

In einer Bohrung 41 des Anschlussbundes 7 ist dabei, vorzugsweise über einen Presssitz, ein Anschlussbolzen 9 festlegbar.In this case, a connection bolt 9 can be fixed in a bore 41 of the connection collar 7, preferably via a press fit.

Die Rotortassen 26 sind als dünnwandige Bauteile ausgebildet, die eine nahezu konstanten Wandstärke WS im Bereich der Faserrutschwand 31, der Rotorrille 33 und des Rotorbodens 6 aufweisen.The rotor cups 26 are designed as thin-walled components which have an almost constant wall thickness WS in the area of the fiber slide wall 31, the rotor groove 33 and the rotor base 6.

Die Rotortasse 26 der Figur 3 unterscheidet sich von den Rotortasse 26 gemäß der Figur 4 im Wesentlichen durch die Form ihrer Rotorrille 33A bzw. 33B.The rotor cup 26 of the Figure 3 differs from the rotor cup 26 according to the Figure 4 essentially by the shape of their rotor groove 33A or 33B.

Das heißt, die in Figur 4 dargestellte Rotortasse 26, ein sogenannter T-Rotor, weist eine spitze Rotorrille 33B mit einer relativ langen, radial angeordneten Abstützung 40B im Bereich des Rotorbodens 6 auf.That is, the in Figure 4 The illustrated rotor cup 26, a so-called T-rotor, has a pointed rotor groove 33B with a relatively long, radially arranged support 40B in the region of the rotor base 6.

Derartig ausgebildete Rotortassen 26 sind verhältnismäßig unempfindlich gegen Schmutzablagerungen. Außerdem lassen sich mit solchen Rotortassen 26 Garne fertigen, die in der Garnstruktur und im Garnvolumen ringgarnähnlich sind.Rotor cups 26 designed in this way are relatively insensitive to dirt deposits. In addition, 26 yarns can be produced with such rotor cups, which are similar in ring structure to yarn volume and volume.

Wie in Figur 4 angedeutet, liegt der Massenschwerpunkt derartiger Rotortassen 26, abhängig vom jeweiligen Rotordurchmesser D, an der Rotorrille 33B beginnend, auf Höhe des Rotorbodens 6 im Bereich des Abschnittes 50D.As in Figure 4 indicated, the center of gravity of such rotor cups 26, depending on the respective rotor diameter D, starting at the rotor groove 33B, at the level of the rotor base 6 in the region of the section 50D.

Der Abstand d bzw. d1 des Massenschwerpunktes der Rotortasse 26 von der Anschlagkante 60 der Rotortasse 26 beträgt bei diesen Rotoren vorzugsweise zwischen 5,88 mm und 7,51 mm.The distance d or d 1 of the center of gravity of the rotor cup 26 from the stop edge 60 of the rotor cup 26 is preferably between 5.88 mm and 7.51 mm in these rotors.

Die in Figur 3 dargestellte Rotortasse 26, ein sogenannter G-Rotor, weist eine gegenüber einem T-Rotor weniger spitze Rotorrille 33A auf, die außerdem nur eine relativ kurze radial angeordnete Abstützung 40A besitzt.In the Figure 3 The illustrated rotor cup 26, a so-called G-rotor, has a rotor groove 33A which is less pointed than a T-rotor and which also has only a relatively short, radially arranged support 40A.

Solchermaßen ausgebildete Rotortassen 26 sind zwar gegenüber Schmutzablagerungen deutlich empfindlicher, ermöglichen aber die Erzeugung eines voluminösen, weichen Garnes.Rotor cups 26 designed in this way are clearly more sensitive to dirt deposits, but allow the production of a voluminous, soft yarn.

Wie aus Figur 3 ersichtlich, liegt bei derartigen Rotortassen 26 der Massenschwerpunkt, ebenfalls abhängig vom jeweiligen Rotordurchmesser D, etwas beabstandet zur Rotorrille 33A auf Höhe des Innenbereiches des Rotorbodens 6, das heißt, etwa auf Höhe des in der Figur 3 mit 50B bezeichneten Abschnittes.How out Figure 3 can be seen, with such rotor cups 26, the center of gravity, also dependent on the respective rotor diameter D, is somewhat spaced from the rotor groove 33A at the level of the inner region of the rotor base 6, that is to say approximately at the level of FIG Figure 3 section labeled 50B.

Das heißt, diesen G-Rotoren liegt der Massenschwerpunkt der Rotortasse in einem Abstand b bzw. b1 von einer Anschlagkante der Rotortasse, der zwischen 5,75 mm und 7,06 mm beträgt.This means that these G-rotors have the center of gravity of the rotor cup at a distance b or b 1 from a stop edge of the rotor cup, which is between 5.75 mm and 7.06 mm.

Claims (4)

  1. An open-end spinning rotor (3) for a textile machine manufacturing cross-wound packages, having a rotor shaft (4) rotatably mounted by means of a magnetic bearing arrangement as well as a rotor cup (16) which has a front rotor opening (30), a fibre slip wall (31) extending from the rotor opening, a so-called rotor groove (33A) as well as a rotor bottom (6) with a connecting collar (7) formed thereon, in which case the rotor cup (26) can be connected to the rotor shaft (4) in a rotationally fixed, if required easily detachable, arrangement via a connecting shaft (9) which can be fixed in the connecting collar (7),
    characterised in that
    the rotor cup (26) is produced as a thin-walled construction and is configured in such a way that the centre of mass of the rotor cup (26) is arranged in a region (50B, 50D) which, as viewed from the rotor opening (30), is located behind the fibre slip wall (31),
    the rotor groove (33A) has a round groove bottom and a short, radially arranged support (40A) in the region of the rotor bottom (6), the shape of the rotor groove (33A) in conjunction with the diameter (D) of the rotor groove (33A) ensuring that the centre of mass of the rotor cup (26) is located in a region (50B) which is arranged at a distance from the rotor groove (33A) at the level of the inner region of the rotor bottom (6), and
    the centre of mass of the rotor cup (26) is located in a region (50B) which is at a distance (b or b1) of between 5.75 mm and 7.06 mm from a stop edge (60) of the rotor cup (26).
  2. The open-end spinning rotor (3) for a textile machine manufacturing cross-wound packages, having a rotor shaft (4) rotatably mounted by means of a magnetic bearing arrangement as well as a rotor cup (16) which has a front rotor opening (30), a fibre slip wall (31) extending from the rotor opening, a so-called rotor groove (33B) as well as a rotor bottom (6) with a connecting collar (7) formed thereon, in which case the rotor cup (26) can be connected to the rotor shaft (4) in a rotationally fixed, if required easily detachable, arrangement via a connecting shaft (9) which can be fixed in the connecting collar (7), with the rotor groove (33B) having a relatively pointed groove bottom and a relatively long, radially arranged support (40B) in the region of the rotor bottom (6),
    characterised in that
    the rotor cup (26) is produced as a thin-walled construction and is configured in such a way that the centre of mass of the rotor cup (26) is arranged in a region (50B, 50D) which, as viewed from the rotor opening (30), is located behind the fibre slip wall (31),
    the shape of the rotor groove (33B) in conjunction with the diameter (D) of the rotor groove (33B) ensures that the centre of mass of the rotor cup (26) is located in a region (50D) which is arranged at the level of the rotor bottom (6) starting from the rotor groove (33B), and
    the centre of mass of the rotor cup (26) is located in a region (50D) which is at a distance (d or d1) of between 5.88 mm and 7.51 mm from a stop edge (60) of the rotor cup (26).
  3. The open-end spinning rotor according to one of the previous claims, characterized in that the rotor cup (26) has an almost constant wall thickness (WS) in the region of the fibre slip wall (31), the rotor groove (33A, 33B) and the rotor bottom (6).
  4. The open-end spinning rotor according to claim 3,
    characterised in that the wall thickness (WS) of the rotor cup (26) is less than 1 mm.
EP06792026.4A 2005-12-23 2006-09-13 Open-end spinning rotor for textile machine producing cross-wound packages Active EP1966421B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005062196A DE102005062196A1 (en) 2005-12-23 2005-12-23 Open ended spinning rotor has thin sidewall with center of gravity located behind fiber slip wall
PCT/EP2006/008907 WO2007079794A1 (en) 2005-12-23 2006-09-13 Open-end spinning rotor for textile machine producing cross-wound packages

Publications (3)

Publication Number Publication Date
EP1966421A1 EP1966421A1 (en) 2008-09-10
EP1966421B1 EP1966421B1 (en) 2012-08-22
EP1966421B2 true EP1966421B2 (en) 2020-07-29

Family

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Application Number Title Priority Date Filing Date
EP06792026.4A Active EP1966421B2 (en) 2005-12-23 2006-09-13 Open-end spinning rotor for textile machine producing cross-wound packages

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EP (1) EP1966421B2 (en)
CN (1) CN101316957B (en)
DE (1) DE102005062196A1 (en)
WO (1) WO2007079794A1 (en)

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CZ2012590A3 (en) * 2012-08-30 2014-03-12 Rieter Cz S.R.O. Spinning rotor for mounting in electromagnetic bearing and driving system of rotor spinning machine workstation and process for producing thereof
DE102012022092A1 (en) * 2012-11-10 2014-05-15 Saurer Germany Gmbh & Co. Kg Open-end spinning rotor
DE102015007819A1 (en) * 2015-06-18 2016-12-22 Saurer Germany Gmbh & Co. Kg Spinning rotor for an open-end spinning device operating at high rotor speeds
CH711652A1 (en) * 2015-10-16 2017-04-28 Rieter Ag Maschf Spindle lower part for spindles of a ring spinning machine.
DE102016109509A1 (en) 2016-05-24 2017-11-30 Rieter Ingolstadt Gmbh Rotor shaft for a non-contact mounted in a magnetic bearing assembly spinning rotor and spinning rotor
DE102016122595A1 (en) * 2016-11-23 2018-05-24 Maschinenfabrik Rieter Ag Rotor cup and open-end spinning rotor with a rotor cup
CN108360097B (en) * 2018-03-27 2023-08-04 杭州三相科技有限公司 Independent direct-drive type ultrahigh-speed rotor structure with preposed motor and cluster control system thereof
DE102018112081A1 (en) * 2018-05-18 2019-11-21 Rieter Ingolstadt Gmbh Method for adjusting an axial position of a rotor drive, rotor spinning device, spinning machine and setting gauge and sensor

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EP0712947A2 (en) † 1994-11-18 1996-05-22 Rieter Ingolstadt Spinnereimaschinenbau AG Open-end spinning device
EP1156142A1 (en) † 2000-05-16 2001-11-21 W. SCHLAFHORST AG & CO. Open-end spinning rotor

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DE3734545A1 (en) * 1987-10-13 1989-05-03 Schubert & Salzer Maschinen OPEN-END ROTOR SPINDING MACHINE
DE3808331A1 (en) * 1988-03-12 1989-09-28 Kernforschungsanlage Juelich MAGNETIC STORAGE WITH PERMANENT MAGNETS TO RECEIVE THE RADIAL BEARING FORCES
CS271434B1 (en) * 1988-07-28 1990-09-12 Karel Jindra Spinning unit for spindleless spinning frame
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EP0712947A2 (en) † 1994-11-18 1996-05-22 Rieter Ingolstadt Spinnereimaschinenbau AG Open-end spinning device
EP1156142A1 (en) † 2000-05-16 2001-11-21 W. SCHLAFHORST AG & CO. Open-end spinning rotor

Also Published As

Publication number Publication date
DE102005062196A1 (en) 2007-06-28
CN101316957B (en) 2011-01-12
WO2007079794A1 (en) 2007-07-19
EP1966421B1 (en) 2012-08-22
CN101316957A (en) 2008-12-03
EP1966421A1 (en) 2008-09-10

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