EP1966421A1 - Open-end spinning rotor for textile machine producing cross-wound packages - Google Patents
Open-end spinning rotor for textile machine producing cross-wound packagesInfo
- Publication number
- EP1966421A1 EP1966421A1 EP06792026A EP06792026A EP1966421A1 EP 1966421 A1 EP1966421 A1 EP 1966421A1 EP 06792026 A EP06792026 A EP 06792026A EP 06792026 A EP06792026 A EP 06792026A EP 1966421 A1 EP1966421 A1 EP 1966421A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- cup
- groove
- region
- open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- D01H4/04—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 cheese-producing textile machine with the features of the preamble of claim 1.
- Such open-end spinning rotors are known for example from EP 1 156 142 Bl.
- the spinning rotors with their rotor shafts are each supported in a magnetic bearing arrangement and driven by a single motor.
- the magnetic bearing assemblies of these textile machines each consist of a front and a rear bearing, wherein the bearings in turn each have 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 in each case releasably connected to the rotor shaft in these spinning rotors.
- the rotor cup can be replaced if necessary, for example, during a wear or a lot change without the rotor shaft must be removed with it.
- the releasable connection of the rotor cup to the rotor shaft is effected by means of a coupling device having a magnetic device for axially locking the rotor cup on the rotor shaft and a mechanical anti-rotation device.
- the rotor cups of these known spinning rotors are designed so that they have different, relatively high wall thicknesses in their various areas, for example on the fiber sliding wall, on the rotor groove and on the rotor bottom.
- the high wall thickness in the rotor bottom of the rotor cup causes these spinning rotors not only have a relatively large moment of inertia, but also to the fact that the center of gravity of these spinning rotors is relatively far forward, in the region of the front bearing of the magnetic bearing assembly.
- open-end spinning devices are known from DE 199 10 277 A1 whose spinning rotors are each supported by a rotor shaft on a support disk bearing and whose rotor cups are characterized by a streamlined contour and a low weight.
- the spinning rotor is, however, formed in one piece, that is, a separation of rotor cup and rotor shaft, without the rotor cup and / or the rotor shaft is damaged, hardly possible.
- the present invention seeks to provide open-end spinning rotors, which are each supported in a magnetic bearing assembly and suitable for high speeds, as well as having a rotor shaft replaceable determinable rotor cup.
- the inventive design of an open-end spinning rotor with a rotor cup which is manufactured as a thin-walled construction and designed so that the center of mass of the rotor cup is disposed in a region which is disposed behind the fiber slipper, has the advantage that on the one hand minimizes the moment of inertia of the spinning rotor and that on the other hand, the center of gravity of the rotor cup and thus also the center of gravity of the spinning rotor on the whole backward, that is, in a region between the bearings of the magnetic bearing assembly moves.
- the center of mass of the magnetically supported spinning rotor according to the invention is positioned so that the front magnetic bearing point is slightly less stressed and thus the two bearing points of the magnetic bearing assemblies are loaded more evenly.
- 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 mass distribution of the rotor cup can be achieved, which ensures in conjunction with the respective diameter of the rotor groove that the center of gravity of the rotor cup is always in a range spaced from the rotor groove at the level of the inner region of the rotor base or on Height of the connection Federal lies.
- the distance to the stop edge of the rotor cup is advantageously, as described in claim 3, between 5.75 mm and 7.06 mm.
- the center of gravity of the rotor cup lies in a region which starts at the rotor groove, at the height of the rotor base or at the rotor base is arranged at the level of the Ranbund.
- the center of gravity of the rotor cup in the embodiment described in claim 4 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 sliding wall, the rotor groove and the rotor base a nearly constant wall thickness of, as set forth in claim 7, less than 1 mm.
- Rotary machines manufactured and not only, as already mentioned above, characterized in that they are relatively easy to accelerate and decelerate due to their low moment of inertia and have a relatively far back and thus advantageous center of mass, they also have an extremely precise concentricity.
- FIG. 1 is 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 assembly and driven by a single motor, wherein the rotor cup of the spinning rotor is connected via a coupling device easily releasably connected to the rotor shaft, Fig. 2, the spinning rotor according to the invention in perspective
- FIG. 3 shows a first embodiment of a rotor cup with a connection bolt fixed in the connection collar of the rotor cup
- FIG. 4 shows a further embodiment of a rotor cup, likewise with a connection bolt fixed in the connection collar of the rotor cup.
- Figure 1 is an open-end spinning device 1 with a magnetically mounted and driven by a single motor
- Such open-end spinning devices 1 each have a
- Rotor housing 2 in which rotates the rotor cup 26 of a spinning rotor 3 at high speed.
- the spinning rotor 3 is preferably driven by an electromotive single drive 18 and is supported with its rotor shaft 4 in the front 27 and rear 28 bearings a magnetic bearing assembly 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 by a pivotably mounted cover element 8 during the spinning operation and via a corresponding pneumatic line 10 a negative pressure source 11 is connected, which generates the necessary spin pressure in the rotor housing 2.
- a so-called channel plate adapter 12 is inserted, which has the thread withdrawal nozzle 13 and the mouth region of the fiber guide 14.
- a thread withdrawal tube 15 At the thread take-off nozzle 13 is followed, as usual, a thread withdrawal tube 15 at.
- an opening cylinder housing 17 is fixed on the lid member 8, which is mounted rotatably limited about a pivot axis 16, also an opening cylinder housing 17 is fixed.
- the cover element 8 has rear bearing brackets 19, 20 for mounting an opening roller 21 or a sliver feed cylinder 22.
- the opening roller 21 is thereby driven in the region of its host blade 23 by a rotating, machine-long tangential belt 24, while the drive (not shown) of the sliver feed cylinder 22 preferably via a worm gear arrangement, which is connected to a machine-length drive shaft 25.
- the opening roller 21 and / or the sliver feed cylinder 22 can of course also each be driven by a single drive, for example a stepping motor.
- the rotor cup 26 of the spinning rotor 3 is connected to the rotor shaft 4 of the spinning rotor 3 via a coupling device designated overall by the reference numeral 29, which can be easily detached as required.
- the coupling device 29 consists for example of a magnetic device for axial fixation of the components and a mechanical rotation.
- Rotor cup 26 has in the region of its rotor bottom 6 a Terminal collar 7 with a bore 41 in which, preferably via a press fit, a connecting pin 9 is fixed.
- the connecting bolt 9 is preferably made at least in its end region of a ferromagnetic material and divided into two sections of approximately equal length, preferably a cylindrical guide portion 38 and formed as an external polygon 36 section.
- a receiving sleeve 34 is in the tubular rotor shaft 4, preferably also via a press fit, which in addition to the rotor-side permanent magnet ring 39 of the front bearing 27 of the magnetic bearing assembly 5 also has a rotatably mounted inner polygon 35 and a permanent magnet insert 32.
- the receiving sleeve 34 further has a cylindrical bore 37, which corresponds in the installed state with the guide portion 38 of the connecting bolt 9.
- the rotor cups 26 of the spinning rotor 3 shown in FIGS. 3 and 4 have, as usual, a rotor opening 30 arranged at the front, a rearwardly diverging fiber sliding wall 31 beginning at the rotor opening 30, a rotor groove 33A or 33B and a rotor bottom 6 with an integrally formed rotor opening Connection collar 7.
- connection collar 7 In a bore 41 of the connection collar 7 is, preferably via a press fit, a connecting pin 9 can be fixed.
- the rotor cups 26 are formed as thin-walled components, which has a nearly constant wall thickness WS in the region of
- the rotor cup 26 of Figure 3 differs from the
- Rotor cup 26 substantially by the shape of its rotor groove 33A and 33B. That is, the rotor cup 26 shown in FIG. 4, 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 bottom 6.
- Such trained rotor cups 26 are relatively insensitive to dirt deposits.
- can be 26 produce yarns with such rotor cups, which are ring yarn similar in yarn structure and yarn volume.
- the center of gravity of such rotor cups 26, depending on the respective rotor diameter D, starting at the rotor groove 33B, lies at the level of the rotor base 6 in the region of the portion 5OD.
- the distance d or di of the center of mass 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.
- G-rotor has a less pointed than a T-rotor
- Rotor groove 33A which also has only a relatively short radially disposed support 4OA.
- Rotor diameter D slightly spaced from the rotor groove 33A
- Rotor cup at a distance b or bi from a stop edge of the rotor cup, which is between 5.75 mm and 7.06 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention concerns an open-end spinning rotor for a textile machine producing cross-wound packages, comprising a rotor shaft(4) mounted rotatably via a magnetic bearing assembly and also a rotor cup (26) comprising a front-side rotor opening, a fibre slip wall (31) emanating from the rotor opening, a so-called rotor groove (33a) and also a rotor bottom (6) with a moulded-on connecting collar (7), the rotor cup (3) being connectable to the rotor shaft (4), via a connector (9) fixable in the connecting collar (7), to be nonrotating and if desired easily releasable. The invention provides that the rotor cup (26) is fabricated as a thin wall structure and formed such that the centre of gravity of the rotor cup (26) is disposed in a region (50B, 50D) which, viewed from the rotor opening (30), is behind the fibre slip wall (31).
Description
Beschreibung:Description:
Offenend-Spinnrotor für eine Kreuzspulen herstellende TextilmaschineOpen-end spinning rotor for a cheese-making textile machine
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 cheese-producing textile machine with the features of the preamble of claim 1.
Derartige Offenend-Spinnrotoren sind beispielsweise durch die EP 1 156 142 Bl bekannt.Such open-end spinning rotors are known for example from EP 1 156 142 Bl.
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.In textile machines producing these cheeses, the spinning rotors with their rotor shafts are each supported in a magnetic bearing arrangement and driven by a single motor. The magnetic bearing assemblies of these textile machines each consist of a front and a rear bearing, wherein the bearings in turn each have 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.Since the installation or removal of the rotor shaft of such stored spinning rotors requires a considerable installation effort, the rotor cup is in each case releasably connected to the rotor shaft in these spinning rotors.
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.That is, the rotor cup can be replaced if necessary, for example, during a wear or a lot change without the rotor shaft must be removed with it.
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.The releasable connection of the rotor cup to the rotor shaft is effected by means of a coupling device having a magnetic device for axially locking the rotor cup on the rotor shaft and a mechanical anti-rotation device. The rotor cups of these known spinning rotors are designed so that they have different, relatively high wall thicknesses in their various areas, for example on the fiber sliding wall, on the rotor groove and on the rotor bottom.
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.In particular, the high wall thickness in the rotor bottom of the rotor cup causes these spinning rotors not only have a relatively large moment of inertia, but also to the fact that the center of gravity of these spinning rotors is relatively far forward, in the region of the front bearing of the magnetic bearing assembly.
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.In particular, in such magnetically mounted spinning rotors, it is unfavorable with respect to the positional fixing of the spinning rotor control technology, if the center of mass of the spinning rotor is too close to one of the bearing point, in the present case in the region of the front bearing of the permanent bearing assembly is arranged.
Des weiteren sind durch die DE 199 10 277 Al 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.Furthermore, open-end spinning devices are known from DE 199 10 277 A1 whose spinning rotors are each supported by a rotor shaft on a support disk bearing and whose rotor cups are characterized by a streamlined contour and a low weight.
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.The spinning rotor is, however, formed in one piece, that is, a separation of rotor cup and rotor shaft, without the rotor cup and / or the rotor shaft is damaged, hardly possible.
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.
Außerdem soll gewährleistet sein, dass sich der steuerungstechnische Aufwand zur Lagefixierung dieser Spinnrotoren während des Spinnbetriebes in vertretbaren Grenzen hält.Based on the aforementioned prior art, the present invention seeks to provide open-end spinning rotors, which are each supported in a magnetic bearing assembly and suitable for high speeds, as well as having a rotor shaft replaceable determinable rotor cup. In addition, it should be ensured that the control engineering effort to fix the position of these spinning rotors during spinning operation within reasonable limits.
Diese Aufgabe wird erfindungsgemäß durch Offenend-Spinnrotoren gelöst, die die im Anspruch 1 beschriebenen Merkmale aufweisen.This object is achieved by open-end spinning rotors having the features described in claim 1.
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.The inventive design of an open-end spinning rotor with a rotor cup, which is manufactured as a thin-walled construction and designed so that the center of mass of the rotor cup is disposed in a region which is disposed behind the fiber slipper, has the advantage that on the one hand minimizes the moment of inertia of the spinning rotor and that on the other hand, the center of gravity of the rotor cup and thus also the center of gravity of the spinning rotor on the whole backward, that is, in a region between the bearings of the magnetic bearing assembly moves.
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.As a result, the center of mass of the magnetically supported spinning rotor according to the invention is positioned so that the front magnetic bearing point is slightly less stressed and thus the two bearing points of the magnetic bearing assemblies are loaded more evenly.
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.
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.Such, in particular by the formation of the rotor cup arrangement of the center of gravity of the spinning rotor simplifies the control of the magnetic bearing assembly considerably, which has a positive effect on the cost of such a control as well as on the running safety of the spinning rotor during spinning operation. The minimization of the moment of inertia of the spinning rotor achieved by the thin-walled design of the rotor cup also has an advantageous effect both on the ramp-up time and on the braking time of the spinning rotor.
Wie im Anspruch 2 beschrieben, ist in einer ersten, vorteilhafter Ausführungsform vorgesehen, dass die Rotortasse eine Rotorrille mit einem runden Rillengrund und einer kurzen, radial angeordneten Abstützung im Bereich des Rotorbodens aufweist .As described in claim 2, it is provided in a first, advantageous embodiment 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.
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.By such a form of the rotor groove, a mass distribution of the rotor cup can be achieved, which ensures in conjunction with the respective diameter of the rotor groove that the center of gravity of the rotor cup is always in a range spaced from the rotor groove at the level of the inner region of the rotor base or on Height of the connection Federal lies.
Bei der im Anspruch 2 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.In the embodiment of a rotor cup described in claim 2, it is possible to place the center of mass of the rotor cup close to the region of the connection collar or into the region of the connection collar of the rotor cup.
Der Abstand zur Anschlagkante der Rotortasse beträgt dabei vorteilhafterweise, wie im Anspruch 3 beschrieben, zwischen 5,75 mm und 7,06 mm.The distance to the stop edge of the rotor cup is advantageously, as described in claim 3, 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 4 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 whose rotor groove has a pointed groove base and a relatively long, radially arranged support in the region of the rotor base, the center of gravity of the rotor cup, as set forth in claim 4, lies in a region which starts at the rotor groove, at the height of the rotor base or at the rotor base is arranged at the level of the Anschlussbund.
Wie im Anspruch 5 dargelegt, weist der Massenschwerpunkt der Rotortasse bei der im Anspruch 4 beschriebenen Ausführungsform
der Rotortasse von einer Anschlagkante der Rotortasse einen Abstand zwischen 5,88 mm und 7,51 mm auf.As set forth in claim 5, the center of gravity of the rotor cup in the embodiment described in claim 4 the rotor cup from a stop edge of the rotor cup a distance between 5.88 mm and 7.51 mm.
Wie im Anspruch 6 beschrieben, weist die Rotortasse im Bereich der Faserrutschwand, der Rotorrille sowie des Rotorbodens eine nahezu konstante Wandstärke von, wie im Anspruch 7 dargelegt, unter 1 mm auf.As described in claim 6, the rotor cup in the area of the fiber sliding wall, the rotor groove and the rotor base a nearly constant wall thickness of, as set forth in claim 7, less than 1 mm.
Solchermaßen ausgebildete Spinnrotoren werden mittels speziellerSuch trained spinning rotors are by means of special
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.Rotary machines manufactured and not only, as already mentioned above, characterized in that they are relatively easy to accelerate and decelerate due to their low moment of inertia and have a relatively far back and thus advantageous center of mass, they also have an extremely precise concentricity.
Das bedeutet, aufgrund des äußerst präzisen Rundlaufes sowie ihres relativ geringen Gewichts sind solche Spinnrotoren für Drehzahlen, die bislang nicht erreichbar schienen, prädestiniert .This means that due to the extremely precise concentricity and their relatively low weight, such spinning rotors are predestined for speeds which previously did not seem achievable.
Weitere Einzelheiten der Erfindung sind einem nachfolgend anhand der Zeichnungen erläuterten Ausführungsbeispiel entnehmbar.Further details of the invention are shown in an embodiment explained below with reference to the drawings.
Es zeigt:It shows:
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 perspektivischer1 is 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 assembly and driven by a single motor, wherein the rotor cup of the spinning rotor is connected via a coupling device easily releasably connected to the rotor shaft, Fig. 2, the spinning rotor according to the invention in perspective
Darstellung, wobei die Rotortasse mit ihrem Anschlussbolzen getrennt vom Rotorschaft des Spinnrotors dargestellt ist,Representation, wherein the rotor cup is shown with its connecting bolt separated from the rotor shaft of the spinning rotor,
Fig. 3 eine erste Ausführungsform einer Rotortasse mit einem im Anschlussbund der Rotortasse festgelegten Anschlussbolzen,FIG. 3 shows a first embodiment of a rotor cup with a connection bolt fixed in the connection collar of the rotor cup, FIG.
Fig. 4 eine weitere Ausführungsform einer Rotortasse, ebenfalls mit einem im Anschlussbund der Rotortasse festgelegten Anschlussbolzen.4 shows a further embodiment of a rotor cup, likewise with a connection bolt fixed in the connection collar of the rotor cup.
In Figur 1 ist eine Offenend-Spinnvorrichtung 1 mit einem magnetisch gelagerten und einzelmotorisch angetriebenenIn Figure 1 is an open-end spinning device 1 with a magnetically mounted and driven by a single motor
Spinnrotor 3 dargestellt.Spinning rotor 3 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 relatively extensively described for example in EP 0 972 868 A2.
Solche Offenend-Spinnvorrichtungen 1 verfügen jeweils über einSuch open-end spinning devices 1 each have a
Rotorgehäuse 2, in dem die Rotortasse 26 eines Spinnrotors 3 mit hoher Drehzahl umläuft.Rotor housing 2, in which rotates the rotor cup 26 of a spinning rotor 3 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 electromotive single drive 18 and is supported with its rotor shaft 4 in the front 27 and rear 28 bearings a magnetic bearing assembly 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. In das Deckelelement 8 ist ein sogenannter Kanalplattenadapter 12 eingelassen, der die Fadenabzugsdüse 13 sowie den Mündungsbereich des Faserleitkanales 14 aufweist. An die Fadenabzugsdüse 13 schließt sich dabei, wie üblich, ein Fadenabzugsröhrchen 15 an.The rotor housing 2, which is open towards the front, is closed by a pivotably mounted cover element 8 during the spinning operation and via a corresponding pneumatic line 10 a negative pressure source 11 is connected, which generates the necessary spin pressure in the rotor housing 2. In the lid member 8, a so-called channel plate adapter 12 is inserted, which has the thread withdrawal nozzle 13 and the mouth region of the fiber guide 14. At the thread take-off nozzle 13 is followed, as usual, a thread withdrawal tube 15 at.
Am Deckelelement 8, das um eine Schwenkachse 16 begrenzt drehbar gelagert ist, ist außerdem ein Auflösewalzengehäuse 17 festgelegt.On the lid member 8, which is mounted rotatably limited about a pivot axis 16, also an opening cylinder housing 17 is fixed.
Des Weiteren weist das Deckelelement 8 rückseitige Lagerkonsolen 19, 20 zur Lagerung einer Auflösewalze 21 beziehungsweise eines Faserbandeinzugszylinders 22 auf. Die Auflösewalze 21 wird dabei im Bereich ihres Wirteis 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.Furthermore, the cover element 8 has rear bearing brackets 19, 20 for mounting an opening roller 21 or a sliver feed cylinder 22. The opening roller 21 is thereby driven in the region of its host blade 23 by a rotating, machine-long tangential belt 24, while the drive (not shown) of the sliver feed cylinder 22 preferably via a worm gear arrangement, which is connected to a machine-length 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 sliver feed cylinder 22 can of course also each be driven by a single drive, for example a stepping 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 shown in particular in FIG. 2, the rotor cup 26 of the spinning rotor 3 is connected to the rotor shaft 4 of the spinning rotor 3 via a coupling device designated overall by the reference numeral 29, which can be easily detached as required.
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 axial fixation of the components and a mechanical rotation.
Das heißt, die als dünnwandige Konstruktion ausgebildeteThat is, the trained as a thin-walled construction
Rotortasse 26 weist im Bereich ihres Rotorbodens 6 einen
Anschlussbund 7 mit einer Bohrung 41 auf, in der, vorzugsweise über einen Presssitz, ein Anschlussbolzen 9 festgelegt ist. 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. 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.Rotor cup 26 has in the region of its rotor bottom 6 a Terminal collar 7 with a bore 41 in which, preferably via a press fit, a connecting pin 9 is fixed. The connecting bolt 9 is preferably made at least in its end region of a ferromagnetic material and divided into two sections of approximately equal length, preferably a cylindrical guide portion 38 and formed as an external polygon 36 section. As further indicated in Figure 2, a receiving sleeve 34 is in the tubular rotor shaft 4, preferably also via a press fit, which in addition to the rotor-side permanent magnet ring 39 of the front bearing 27 of the magnetic bearing assembly 5 also has a rotatably mounted inner polygon 35 and a permanent magnet insert 32. The receiving sleeve 34 further has a cylindrical bore 37, which corresponds in the installed state with the guide portion 38 of the connecting bolt 9.
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 rotor cups 26 of the spinning rotor 3 shown in FIGS. 3 and 4 have, as usual, a rotor opening 30 arranged at the front, a rearwardly diverging fiber sliding wall 31 beginning at the rotor opening 30, a rotor groove 33A or 33B and a rotor bottom 6 with an integrally formed rotor opening Connection collar 7.
In einer Bohrung 41 des Anschlussbundes 7 ist dabei, vorzugsweise über einen Presssitz, ein Anschlussbolzen 9 festlegbar.In a bore 41 of the connection collar 7 is, preferably via a press fit, a connecting pin 9 can be fixed.
Die Rotortassen 26 sind als dünnwandige Bauteile ausgebildet, die eine nahezu konstanten Wandstärke WS im Bereich derThe rotor cups 26 are formed as thin-walled components, which has a nearly constant wall thickness WS in the region of
Faserrutschwand 31, der Rotorrille 33 und des Rotorbodens 6 aufweisen.Faserrutschwand 31, the rotor groove 33 and the rotor bottom 6 have.
Die Rotortasse 26 der Figur 3 unterscheidet sich von denThe rotor cup 26 of Figure 3 differs from the
Rotortasse 26 gemäß der Figur 4 im Wesentlichen durch die Form ihrer Rotorrille 33A bzw. 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.Rotor cup 26 according to the figure 4 substantially by the shape of its rotor groove 33A and 33B. That is, the rotor cup 26 shown in FIG. 4, 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 bottom 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. 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 5OD. Der Abstand d bzw. di 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.Such trained rotor cups 26 are relatively insensitive to dirt deposits. In addition, can be 26 produce yarns with such rotor cups, which are ring yarn similar in yarn structure and yarn volume. As indicated in FIG. 4, the center of gravity of such rotor cups 26, depending on the respective rotor diameter D, starting at the rotor groove 33B, lies at the level of the rotor base 6 in the region of the portion 5OD. The distance d or di of the center of mass 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 sogenannterThe rotor cup 26 shown in Figure 3, a so-called
G-Rotor, weist eine gegenüber einem T-Rotor weniger spitzeG-rotor, has a less pointed than a T-rotor
Rotorrille 33A auf, die außerdem nur eine relativ kurze radial angeordnete Abstützung 4OA besitzt.Rotor groove 33A, which also has only a relatively short radially disposed support 4OA.
Solchermaßen ausgebildete Rotortassen 26 sind zwar gegenüberSuch trained rotor cups 26 are indeed opposite
Schmutzablagerungen deutlich empfindlicher, ermöglichen aber die Erzeugung eines voluminösen, weichen Garnes.Dirt deposits much more sensitive, but allow the production of a voluminous, soft yarn.
Wie aus Figur 3 ersichtlich, liegt bei derartigen Rotortassen 26 der Massenschwerpunkt, ebenfalls abhängig vom jeweiligenAs can be seen from FIG. 3, the center of gravity of such rotor cups 26 is also dependent on the respective one
Rotordurchmesser D, etwas beabstandet zur Rotorrille 33A aufRotor diameter D, slightly spaced from the rotor groove 33A
Höhe des Innenbereiches des Rotorbodens 6, das heißt, etwa aufHeight of the inner region of the rotor bottom 6, that is, approximately on
Höhe des in der Figur 3 mit 50B bezeichneten Abschnittes.Height of the designated in Figure 3 with 50B section.
Das heißt, diesen G-Rotoren liegt der Massenschwerpunkt derThat is, these G-rotors is the center of gravity of
Rotortasse in einem Abstand b bzw. bi von einer Anschlagkante der Rotortasse, der zwischen 5,75 mm und 7,06 mm beträgt.
Rotor cup at a distance b or bi from a stop edge of the rotor cup, which is between 5.75 mm and 7.06 mm.
Claims
1. Offenend-Spinnrotor für eine Kreuzspulen herstellende Textilmaschine mit einem über eine Magnetlageranordnung rotierbar gelagerten Rotorschaft sowie einer Rotortasse, die eine frontseitige Rotoröffnung, eine von der Rotoröffnung ausgehende Faserrutschwand, eine sogenannte Rotorrille sowie einen Rotorboden mit einem angeformten Anschlussbund aufweist, wobei die Rotortasse über eine im Anschlussbund festlegbare Anschlusswelle drehfest, bei Bedarf leicht lösbar, an den Rotorschaft anschließbar ist,1. Open-end spinning rotor for a cross-wound producing textile machine with a rotatably mounted on a magnetic bearing assembly rotor shaft and a rotor cup, which has a front rotor opening, a rotor opening from the outgoing Faserrutschwand, a so-called rotor groove and a rotor bottom with a molded connection collar, wherein the rotor cup via a connection shaft which can be fixed in the connection collar, is non-rotatable, can be easily detached if necessary, can be connected to the rotor shaft,
dadurch gekennzeichnet,characterized,
dass die Rotortasse (26) als dünnwandige Konstruktion gefertigt und so ausgebildet ist, dass der Massenschwerpunkt der Rotortasse (26) in einem Bereich (5OB, 50D) angeordnet ist, der, von der Rotoröffnung (30) aus betrachtet, hinter der Faserrutschwand (31) liegt.in that the rotor cup (26) is produced as a thin-walled construction and is designed so that the center of mass of the rotor cup (26) is arranged in a region (5OB, 50D) which, viewed from the rotor opening (30), lies behind the fiber-slotted cup (31 ) lies.
2. Offenend-Spinnrotor nach Anspruch 1, dadurch gekennzeichnet, dass die Rotortasse (26) eine Rotorrille (33A) mit einem runden Rillengrund und einer kurzen, radial angeordneten Abstützung (40A) im Bereich des Rotorbodens (6) aufweist, wobei die Form der Rotorrille (33A) in Verbindung mit dem Durchmesser (D) der Rotorrille (33A) dafür sorgt, dass der Massenschwerpunkt der Rotortasse (26) in einem Bereich (50B) liegt, der beabstandet zur Rotorrille (33A) auf Höhe des Innenbereiches des Rotorbodens (6) angeordnet ist. 2. open-end spinning rotor according to claim 1, characterized in that the rotor cup (26) has a rotor groove (33A) with a round groove bottom and a short, radially arranged support (40A) in the region of the rotor bottom (6), wherein the shape of the Rotor groove (33A) in conjunction with the diameter (D) of the rotor groove (33A) ensures that the center of mass of the rotor cup (26) in a region (50B) which is spaced from the rotor groove (33A) at the level of the inner region of the rotor bottom (33A) 6) is arranged.
3. Offenend-Spinnrotor nach Anspruch 2, dadurch gekennzeichnet, dass der Massenschwerpunkt der Rotortasse (26) in einem Bereich (50B) liegt, der von einer Anschlagkante (60) der Rotortasse (26) einen Abstand (b bzw. bi ) zwischen 5,75 mm und 7,06 mm aufweist.3. open-end spinning rotor according to claim 2, characterized in that the center of gravity of the rotor cup (26) in a region (50 B), of a stop edge (60) of the rotor cup (26) a distance (b or bi) between 5 , 75 mm and 7.06 mm.
4. Offenend-Spinnrotor nach Anspruch 1, dadurch gekennzeichnet, dass die Rotortasse (26) eine Rotorrille (33B) mit einem relativ spitzen Rillengrund und einer verhältnismäßig langen, radial angeordneten Abstützung (40B) im Bereich des Rotorbodens (6) aufweist, wobei die Form der Rotorrille (33B) in Verbindung mit dem Durchmesser (D) der Rotorrille (33B) dafür sorgt, dass der Massenschwerpunkt der Rotortasse (26) in einem Bereich (50D) liegt, der an der Rotorrille (33B) beginnend, auf Höhe des Rotorbodens (6) angeordnet ist.4. open-end spinning rotor according to claim 1, characterized in that the rotor cup (26) has a rotor groove (33 B) with a relatively sharp groove bottom and a relatively long radially arranged support (40 B) in the region of the rotor base (6), wherein the Shape of the rotor groove (33B) in conjunction with the diameter (D) of the rotor groove (33B) ensures that the center of gravity of the rotor cup (26) in a region (50D), starting at the rotor groove (33B), at the level of Rotor bottom (6) is arranged.
5. Offenend-Spinnrotor nach Anspruch 4, dadurch gekennzeichnet, dass der Massenschwerpunkt der Rotortasse (26) in einem Bereich (50D) liegt, der von einer Anschlagkante (60) der Rotortasse (26) einen Abstand (d bzw. di ) zwischen 5,88 mm und 7,51 mm aufweist.5. open-end spinning rotor according to claim 4, characterized in that the center of gravity of the rotor cup (26) in a region (50D), of a stop edge (60) of the rotor cup (26) a distance (d or di) between 5 , 88 mm and 7.51 mm.
6. Offenend-Spinnrotor nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Rotortasse (26) im Bereich der Faserrutschwand (31), der Rotorrille (33A, 33B) und des Rotorbodens (6) eine nahezu konstante Wandstärke (WS) aufweist.6. Open-end spinning rotor according to one of the preceding claims, characterized in that the rotor cup (26) in the region of the fiber slipper wall (31), the rotor groove (33A, 33B) and the rotor bottom (6) has a nearly constant wall thickness (WS).
7. Offenend-Spinnrotor nach Anspruch 6, dadurch gekennzeichnet, dass die Wandstärke (WS) der Rotortasse (26) unter 1 mm beträgt. 7. open-end spinning rotor according to claim 6, characterized in that the wall thickness (WS) of the rotor cup (26) is less than 1 mm.
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 true EP1966421A1 (en) | 2008-09-10 |
| EP1966421B1 EP1966421B1 (en) | 2012-08-22 |
| EP1966421B2 EP1966421B2 (en) | 2020-07-29 |
Family
ID=37441830
Family Applications (1)
| 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 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1966421B2 (en) |
| CN (1) | CN101316957B (en) |
| DE (1) | DE102005062196A1 (en) |
| WO (1) | WO2007079794A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1028197B (en) * | 1974-01-30 | 1979-01-30 | Teldix Gmbh | APPARATUS WITH A FAST ROTATING MOTOR |
| DE3324129A1 (en) * | 1983-07-05 | 1985-01-17 | Fritz 7347 Bad Überkingen Stahlecker | BEARING AND DRIVE FOR A SPINNING ROTOR OF AN OPEN-END SPINNING DEVICE |
| 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 |
| DE4020518A1 (en) * | 1990-06-28 | 1992-01-02 | Schubert & Salzer Maschinen | OPEN-END SPIDER ROTOR |
| DE4441087A1 (en) * | 1994-11-18 | 1996-05-23 | Rieter Ingolstadt Spinnerei | Open-end spinning device |
| DE19910277B4 (en) * | 1999-03-09 | 2010-11-04 | Oerlikon Textile Gmbh & Co. Kg | Spinning rotor for open-end spinning machines |
| DE10024020A1 (en) * | 2000-05-16 | 2001-11-22 | Schlafhorst & Co W | Open-end spinning rotor |
| DE10254271A1 (en) * | 2002-11-21 | 2004-06-03 | Saurer Gmbh & Co. Kg | Open-end spinning device |
-
2005
- 2005-12-23 DE DE102005062196A patent/DE102005062196A1/en not_active Withdrawn
-
2006
- 2006-09-13 WO PCT/EP2006/008907 patent/WO2007079794A1/en active Application Filing
- 2006-09-13 CN CN2006800443925A patent/CN101316957B/en active Active
- 2006-09-13 EP EP06792026.4A patent/EP1966421B2/en active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007079794A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007079794A1 (en) | 2007-07-19 |
| CN101316957A (en) | 2008-12-03 |
| EP1966421B2 (en) | 2020-07-29 |
| EP1966421B1 (en) | 2012-08-22 |
| CN101316957B (en) | 2011-01-12 |
| DE102005062196A1 (en) | 2007-06-28 |
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