EP2730686B1 - Rotor de filage à extrémité ouverte - Google Patents

Rotor de filage à extrémité ouverte Download PDF

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Publication number
EP2730686B1
EP2730686B1 EP13004898.6A EP13004898A EP2730686B1 EP 2730686 B1 EP2730686 B1 EP 2730686B1 EP 13004898 A EP13004898 A EP 13004898A EP 2730686 B1 EP2730686 B1 EP 2730686B1
Authority
EP
European Patent Office
Prior art keywords
rotor
cylindrical bore
open
end spinning
accordance
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.)
Revoked
Application number
EP13004898.6A
Other languages
German (de)
English (en)
Other versions
EP2730686A1 (fr
Inventor
Heinz-Georg Wassenhoven
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Saurer Germany GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saurer Germany GmbH and Co KG filed Critical Saurer Germany GmbH and Co KG
Publication of EP2730686A1 publication Critical patent/EP2730686A1/fr
Application granted granted Critical
Publication of EP2730686B1 publication Critical patent/EP2730686B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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 comprising a rotor shaft, a rotor cup and a coupling device which releasably connects the rotor shaft and the rotor cup.
  • the coupling device has locking means for axially locking the rotor cup, transmission means for the positive transmission of torque from the rotor shaft to the rotor cup, and additionally centering means for centering the rotor shaft and the rotor cup.
  • the centering means comprise a cylindrical bore and a corresponding guide lug, which is insertable into the cylindrical bore.
  • Spinning rotors used in open-end rotor spinning machines must be interchangeable as needed, for example when worn or to produce another type of yarn on the rotor spinning machine. Depending on the type of storage, it may make the change of open-end spinning rotors difficult or even impossible if the rotor cup and the rotor shaft are permanently connected to each other. Therefore, a number of considerations have already been made as to how the connection between rotor cup and rotor shaft can be made detachable. In addition to the simple interchangeability of the rotor cup is the safe connection during operation of the spinning rotor in the foreground. It should be noted that the spinning rotor is operated at speeds of 150,000 revolutions per minute and more. There are known rotor spinning machines, which reach up to 200,000 revolutions per minute.
  • the cylindrical bore should enclose the guide lug without play.
  • a backlash-free connection is not possible due to the ever-present manufacturing tolerances.
  • a game between the cylindrical bore and the guide lug will always be necessary.
  • imbalance forces that can damage the drive and / or the bearing of the spinning rotor can arise at the high rotational speeds with which the spinning rotor rotates.
  • the unbalance is caused by the misalignment between rotor cup and rotor shaft.
  • the DE 10 2009 048 295 A1 also discloses a spinning rotor having a rotor cup and a rotor shaft. These are detachably connected to each other.
  • the rotor shaft has a bore and the rotor cup a stub shaft, which is insertable into the bore.
  • a spring element is arranged to be tensioned during insertion of the stub shaft into the bore so that a torque is transmitted from the rotor shaft to the rotor cup.
  • a non-positive torque transmission does not have the required reliability. To imbalance forces makes the Scripture no statement.
  • the EP 0 808 923 A1 discloses an open-end spinning rotor, consisting of a rotor cup and a receiving this receiving part over which the rotor cup is stored and driven. Rotortasse and carrier part are connected by a clip connection. A part of the clip connection is received via an elastic element. As a result, the necessary deformability of the clip connection for assembly is achieved.
  • the elastic element is also intended to damp vibrations generated by an unbalance of the rotor mass. An axial offset of rotor cup and carrier part or rotor shaft can not be prevented by the disclosed construction.
  • the DE 38 15 182 A1 discloses various coupling devices for releasably connecting rotor shaft and rotor cup. It is proposed, inter alia, consisting of an elastic material centering, which is mounted between an attached to the rotor cup coupling pin and connected to the rotor shaft coupling shell.
  • the diameter of the coupling pin is significantly smaller than the diameter of the coupling shell.
  • the space between pin and shell is filled exclusively by the elastic centering. It is doubtful that the centering accuracy required for modern rotor spinning machines can be achieved in this way.
  • the spinning rotor of EP 1 156 142 B1 develop so that the rotor cup can be easily replaced and at the same time a reliable centering of rotor cup and rotor shaft is achieved.
  • the cylindrical bore and the guide lug on a clearance fit and the centering means comprise a resilient arrangement which is located between the cylindrical bore and the guide lug.
  • the game between the cylindrical bore and the guide lug is smaller than 0.1 mm according to the invention. In this area, one can assume that the centering can be reliably enabled by means of the elastic arrangement.
  • the centering is improved the less the clearance between the bore and guide approach.
  • the production cost increases the tighter the chosen tolerances are.
  • the tolerances are chosen so that the clearance between the cylindrical bore and the guide lug is less than 0.01 mm. Such tolerances can be produced realistically and the centering by the elastic arrangement is optimal.
  • the extent of the elastic arrangement in the axial direction of the cylindrical bore is greater than 0.8 times the diameter of the cylindrical bore.
  • the manufacturing accuracy of the elastic arrangement is limited. This is especially true when the elastic assembly is integrally formed and has a greater length. Therefore, advantageously, the extension of the elastic assembly in the axial direction of the cylindrical bore is less than 2.4 times the diameter of the cylindrical bore.
  • the elastic assembly comprises an elastic member. It is possible to use only a single elastic element. That is, the elastic assembly is integrally formed.
  • the elastic arrangement comprises a second elastic element, which is arranged in the axial direction of the cylindrical bore spaced from the first elastic element.
  • the elastic element may be formed, for example, as a tolerance sleeve.
  • the tolerance sleeve may be formed as a corrugated band and consist of spring band steel.
  • the elastic element may also be formed as an O-ring.
  • O-rings are used axially spaced from each other.
  • two tolerance sleeves it is also possible to use two tolerance sleeves in this way.
  • the centering can be improved if in the cylindrical bore or the guide lug there is a circumferential recess in which the elastic element is inserted.
  • the Fig. 1 and the Fig. 2 show a spinning rotor 1 with a coupling device 3 as in the prior art, for example, from the above-cited EP 1 156 142 B1 known.
  • the two figures are intended to explain the problems which are overcome by the present invention.
  • the FIGS. 1 and 2 Both show the same spinning rotor 1, so that this will be described only once.
  • the spinning rotor 1 comprises a rotor cup 2 and a rotor shaft 4, which are connected to one another via a coupling device 3.
  • the rotor shaft 4 is mounted in a suitable, not shown storage and connected to a drive, not shown.
  • the drive sets the rotor shaft 4 and thus the spinning rotor 1 in rotation.
  • the rotor cup 2 has an approach.
  • the approach is divided into a cylindrical guide projection 7 and a positive locking element 9.
  • the positive-locking element 9 is formed as an external polygon.
  • the rotor shaft 4 has a cylindrical bore 8, which corresponds to the cylindrical guide projection 7.
  • the rotor shaft 4 has a form-locking element 10 which is designed as an internal polygon and which corresponds with the form-fitting element 9.
  • the interlocking elements 9 and 10 create a positive connection between the rotor cup 2 and the rotor shaft 4, so that a torque can be transmitted.
  • the rotor shaft 4 has a magnet 5, which adjoins the polygonal socket on. The magnet 5 exerts an attraction on the ferromagnetic approach of the rotor cup 2.
  • the magnetic attraction forces are sufficient.
  • Fig. 1 are also the axes 16 and 17 located.
  • the axis 16 is the axis of symmetry of the rotor cup 2.
  • the axis 17 illustrates the axis of symmetry of the rotor shaft 4. Due to the play between the cylindrical bore 8 and the guide projection 7, the axes on an offset e. This offset e leads to an imbalance of the spinning rotor. This imbalance can be up to 200,000 min -1 lead to damage of the bearing or of the drive at rotational speeds.
  • the axes are offset parallel to each other.
  • Fig. 2 shows the same spinning rotor 1 as Fig.
  • the axes 16 and 17 are not offset from each other in parallel, but rotor shaft 4 and rotor cup 2 are tilted against each other.
  • the axes 16 and 17 of rotor cup 2 and rotor shaft 4 have an angular offset.
  • the angular offset also arises due to the clearance between the rotor shaft 4 and rotor cup 2 and leads to an imbalance of the system with the disadvantages described above.
  • the Fig. 3 shows a spinning rotor 1a according to the invention.
  • the rotor cup 2 with the rotor cup 2 of FIGS. 1 and 2 identical.
  • the rotor shaft 4a has, corresponding to the rotor shaft 4, a cylindrical bore 8, an internal polygon 10 and a magnet 5 for the axial locking of the rotor cup 2.
  • the coupling device 3a of the spinning rotor 1a still differs from the coupling device 3 of the spinning rotor 1.
  • two O-rings 13 and 14 are additionally arranged.
  • two recesses 18 and 19 are provided, in which the O-rings 13 and 14 are inserted.
  • the two O-rings form an elastic arrangement.
  • the extent of the elastic arrangement in the axial direction of the cylindrical bore is in Fig. 3 denoted by l a .
  • the diameter of the cylindrical bore 8 is denoted by d. If the extent l a in relation to the diameter d is sufficiently large, an angular offset between the axes of the rotor cup 2 and the rotor shaft 4 a can be prevented.
  • the extent l a must be at least 80% of the diameter d.
  • FIGS. 4 and 5 show an alternative embodiment of the present invention.
  • the difference between the spinning rotor 1b and the spinning rotor 1a lies in the fact that the coupling device 3b has a different elastic arrangement.
  • the rotor shaft 4b has on the circumference of the cylindrical bore 8 a recess 20b.
  • a tolerance sleeve 15b is applied.
  • Fig. 5 a section through the tolerance sleeve along the section line AA.
  • the Fig. 5 shows that the tolerance sleeve 15b is formed as a corrugated band.
  • the corrugated band can be made of spring band steel.
  • the elastic arrangement consists of the elastic element, namely the tolerance sleeve 15b.
  • the length l b of the tolerance sleeve 15b corresponds to the extent of the elastic arrangement in the axial direction of the cylindrical bore.
  • the length l b is also chosen here in relation to the diameter d of the cylindrical bore 8 so that an angular offset is avoided.
  • the spinning rotor 1c includes a rotor cup 2c, a clutch device 3c and a rotor shaft 4c.
  • the rotor shaft 4 does not have a cylindrical bore 8, but the rotor cup 2c has a cylindrical bore 8c.
  • the rotor shaft 4c has a guide lug 7c corresponding thereto. In the guide projection 7c, a circumferential recess 20c is introduced.
  • the tolerance sleeve 15c can be arranged to center the rotor cup 2c and rotor shaft 4c.
  • the rotor shaft 4c has a positive-locking element 11.
  • the rotor cup 2c comprises a form-fitting element 12 corresponding thereto
  • Fig. 7 shows the section BB with the two form-fitting elements 11 and 12.
  • the positive-locking elements 11 and 12 have a circular cylindrical shape with two flat surfaces on the circumference. Other shapes are possible.

Landscapes

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

Claims (12)

  1. Rotor de filage (1a, 1b, 1c) à fibres libérées, comportant un arbre rotorique (4a, 4b, 4c), une coupelle rotorique (2, 2c) et un dispositif d'accouplement (3a, 3b, 3c) qui relie amoviblement ledit arbre rotorique (4a, 4b, 4c) et ladite coupelle rotorique (2, 2c), ledit dispositif d'accouplement (3a, 3b, 3c) comprenant des moyens d'arrêt (5, 6) conçus pour arrêter axialement la coupelle rotorique (2, 2c) ; des moyens de transmission (9, 10, 11, 12) conçus pour transmettre par complémentarité de formes, à ladite coupelle rotorique (2, 2c), un couple de rotation émanant de l'arbre rotorique (4a, 4b, 4c) ; et, additionnellement, des moyens de centrage conçus pour centrer ledit arbre rotorique (4a, 4b, 4c) et ladite coupelle rotorique (2, 2c), lesdits moyens de centrage incluant un alésage cylindrique (8, 8c) et un appendice de guidage (7, 7c) de forme concordante, pouvant être inséré dans ledit alésage cylindrique (8, 8c),
    caractérisé par le fait que
    l'alésage cylindrique (8, 8c) et l'appendice de guidage (7, 7c) sont ajustés avec jeu, le jeu entre ledit alésage cylindrique (8, 8c) et ledit appendice de guidage (7, 7c) étant inférieur à 0,1 mm, et les moyens de centrage incluant un ensemble élastique (13, 14, 15b, 15c) interposé entre ledit alésage cylindrique (8, 8c) et ledit appendice de guidage (7, 7c).
  2. Rotor de filage à fibres libérées, selon la revendication 1, caractérisé par le fait que le jeu entre l'alésage cylindrique (8, 8c) et l'appendice de guidage (7, 7c) est inférieur à 0,01 mm.
  3. Rotor de filage à fibres libérées, selon l'une des revendications précédentes, caractérisé par le fait que l'étendue (1a, 1b) de l'ensemble élastique (13, 14, 15b, 15c), dans la direction axiale de l'alésage cylindrique (8, 8c), est supérieure à 0,8 fois le diamètre (d) dudit alésage cylindrique (8, 8c).
  4. Rotor de filage à fibres libérées, selon la revendication 3, caractérisé par le fait que l'étendue (la, lb) de l'ensemble élastique, dans la direction axiale de l'alésage cylindrique (8, 8c), est inférieure à 2,4 fois le diamètre (d) dudit alésage cylindrique (8, 8c).
  5. Rotor de filage à fibres libérées, selon l'une des revendications précédentes, caractérisé par le fait que l'ensemble élastique inclut un élément élastique (13, 15b, 15c).
  6. Rotor de filage à fibres libérées, selon la revendication 5, caractérisé par le fait que l'élément élastique est réalisé sous la forme d'une douille de tolérance (15b, 15c).
  7. Rotor de filage à fibres libérées, selon la revendication 6, caractérisé par le fait que la douille de tolérance (15b, 15c) est réalisée sous la forme d'un ruban ondulé.
  8. Rotor de filage à fibres libérées, selon la revendication 7, caractérisé par le fait que le ruban ondulé consiste en du feuillard d'acier à ressorts.
  9. Rotor de filage à fibres libérées, selon la revendication 5, caractérisé par le fait que l'élément élastique est réalisé sous la forme d'une bague torique (13, 14).
  10. Rotor de filage à fibres libérées, selon l'une des revendications 5 à 9, caractérisé par la présence, dans l'alésage cylindrique (8, 8c) et/ou l'appendice de guidage (7, 7c), d'une encoche périphérique (18, 19, 20) dans laquelle l'élément élastique (13, 14, 15b, 15c) est intégré.
  11. Rotor de filage à fibres libérées, selon l'une des revendications 5 à 10, caractérisé par le fait que l'ensemble élastique comporte un second élément élastique (14), placé à distance du premier élément élastique (13) dans la direction axiale de l'alésage cylindrique.
  12. Rotor de filage à fibres libérées, selon la revendication 11, caractérisé par le fait que le premier élément élastique (13) et le second élément élastique (14) sont de réalisations identiques.
EP13004898.6A 2012-11-10 2013-10-11 Rotor de filage à extrémité ouverte Revoked EP2730686B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012022092.8A DE102012022092A1 (de) 2012-11-10 2012-11-10 Offenend-Spinnrotor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102012022092 Previously-Filed-Application 2012-11-10

Publications (2)

Publication Number Publication Date
EP2730686A1 EP2730686A1 (fr) 2014-05-14
EP2730686B1 true EP2730686B1 (fr) 2015-12-16

Family

ID=49474182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13004898.6A Revoked EP2730686B1 (fr) 2012-11-10 2013-10-11 Rotor de filage à extrémité ouverte

Country Status (4)

Country Link
EP (1) EP2730686B1 (fr)
CN (1) CN103806144B (fr)
DE (1) DE102012022092A1 (fr)
IN (1) IN2013MU03291A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016122595A1 (de) 2016-11-23 2018-05-24 Maschinenfabrik Rieter Ag Rotortasse und Offenend-Spinnrotor mit einer Rotortasse

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016123698A1 (de) * 2016-12-07 2018-06-07 Saurer Germany Gmbh & Co. Kg Spinnrotor für eine Offenend-Spinnvorrichtung und Offenend- Spinnvorrichtung
DE102017129152A1 (de) 2017-12-07 2019-06-13 Maschinenfabrik Rieter Ag Auflösewalze für eine Offenend-Spinnvorrichtung sowie Offenend-Spinnvorrichtung
CN110424073A (zh) * 2019-08-10 2019-11-08 苏州当峰纺织有限公司 一种用于气流纺纱机上的纺纱装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2822108A1 (de) 1978-05-20 1979-11-29 Kugelfischer G Schaefer & Co Elastische lagerung
DE2540106C2 (de) 1975-09-09 1986-04-24 Teldix Gmbh, 6900 Heidelberg Anordnung mit schnelldrehendem Rotor
DE19734637A1 (de) 1996-12-20 1998-06-25 Schlafhorst & Co W Axiallager für einen Offenend-Spinnrotor
EP1156142B1 (fr) 2000-05-16 2004-04-21 Saurer GmbH & Co. KG Rotor de filage à bout libre
DE102009048295A1 (de) 2009-10-05 2010-07-29 Oerlikon Textile Gmbh & Co. Kg Offenend-Spinnrotor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3815182A1 (de) 1988-05-04 1989-11-16 Wolfgang Grahamer Spinnrotor
EP0805224A3 (fr) * 1996-05-04 1997-11-19 Rieter Ingolstadt Spinnereimaschinenbau AG Rotor de filage à bout libre
DE19621190A1 (de) 1996-05-25 1997-11-27 Rieter Ingolstadt Spinnerei Offenend-Spinnrotor
DE102005062196A1 (de) * 2005-12-23 2007-06-28 Saurer Gmbh & Co. Kg Offenend-Spinnrotor für eine Kreuzspulen herstellende Textilmaschine
DE102012008693A1 (de) 2012-04-28 2013-10-31 Oerlikon Textile Gmbh & Co. Kg Offenend-Spinnrotor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2540106C2 (de) 1975-09-09 1986-04-24 Teldix Gmbh, 6900 Heidelberg Anordnung mit schnelldrehendem Rotor
DE2822108A1 (de) 1978-05-20 1979-11-29 Kugelfischer G Schaefer & Co Elastische lagerung
DE19734637A1 (de) 1996-12-20 1998-06-25 Schlafhorst & Co W Axiallager für einen Offenend-Spinnrotor
EP1156142B1 (fr) 2000-05-16 2004-04-21 Saurer GmbH & Co. KG Rotor de filage à bout libre
DE102009048295A1 (de) 2009-10-05 2010-07-29 Oerlikon Textile Gmbh & Co. Kg Offenend-Spinnrotor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Afbau und Funktion "Parafil 2000" GAK.204.0 ND-10.96", SUESSEN, 1996, pages 1 - 4, XP055323258
"Berechnung von Passungen nach ISO 286 (2010)", MESYS AG, 2016, XP055323260, Retrieved from the Internet <URL:https://www.mesys.ch/?page_id=152>
W. BEITZ ET AL: "Dubbel Taschenbuch für den Maschinenbau", 1997, article "Grundlagen der Konstruktiontechnik 6 Grundlagen des Normen- und Zeichnungswesens", pages: F29 - F32, XP055323265

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016122595A1 (de) 2016-11-23 2018-05-24 Maschinenfabrik Rieter Ag Rotortasse und Offenend-Spinnrotor mit einer Rotortasse
EP3327187A1 (fr) * 2016-11-23 2018-05-30 Maschinenfabrik Rieter AG Cloche de rotor et rotor pour métier à filer à bout libre doté d'une cloche de rotor

Also Published As

Publication number Publication date
IN2013MU03291A (fr) 2015-07-10
EP2730686A1 (fr) 2014-05-14
CN103806144A (zh) 2014-05-21
DE102012022092A1 (de) 2014-05-15
CN103806144B (zh) 2017-04-26

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