EP2692916A2 - Procédé de fonctionnement d'un dispositif de tissage, métier à tisser à rotor présentant un dispositif de tissage et dispositif de tissage - Google Patents

Procédé de fonctionnement d'un dispositif de tissage, métier à tisser à rotor présentant un dispositif de tissage et dispositif de tissage Download PDF

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Publication number
EP2692916A2
EP2692916A2 EP13003141.2A EP13003141A EP2692916A2 EP 2692916 A2 EP2692916 A2 EP 2692916A2 EP 13003141 A EP13003141 A EP 13003141A EP 2692916 A2 EP2692916 A2 EP 2692916A2
Authority
EP
European Patent Office
Prior art keywords
rotor
spinning
housing
drive
drive housing
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
Application number
EP13003141.2A
Other languages
German (de)
English (en)
Other versions
EP2692916B1 (fr
EP2692916A3 (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 EP2692916A2 publication Critical patent/EP2692916A2/fr
Publication of EP2692916A3 publication Critical patent/EP2692916A3/fr
Application granted granted Critical
Publication of EP2692916B1 publication Critical patent/EP2692916B1/fr
Not-in-force 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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • 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
    • D01H4/12—Rotor bearings; Arrangements for driving or stopping
    • D01H4/14—Rotor driven by an electric motor

Definitions

  • the invention relates to a method for operating a spinning device of a rotor spinning machine, wherein a spinning rotor with a rotor cup and a rotor shaft by a single electric drive, which is arranged in a drive housing, is set in rotation and the electric single drive is in operative connection with the rotor shaft, the Rotor shaft is supported by means of a magnetic bearing assembly, which is also arranged in the drive housing, a rotor housing, in which the rotor cup is disposed, is subjected to negative pressure during the spinning operation and the rotor shaft extends through a connection opening between the drive housing and the rotor housing.
  • the invention further relates to a rotor spinning machine with a plurality of spinning stations, each having a spinning device.
  • the invention also relates to the spinning device itself.
  • the spinning device has a spinning rotor with a rotor cup and a rotor shaft, a single electric drive, which is designed to set the spinning rotor in rotation and is in operative connection with the rotor shaft, a magnetic bearing arrangement for supporting the rotor shaft a rotor housing, which is subjected to negative pressure and in which the rotor cup is arranged, a connection opening between the drive housing and the rotor housing through which the rotor shaft extends, a drive housing in which the electric single drive and the magnetic bearing assembly is arranged and the has an air inlet for supplying compressed air into the drive housing, on.
  • the rotor spinning machine has a compressed air source, which is connected to the air inlet, and a control device for controlling the compressed air source.
  • the EP 0 972 868 A2 discloses a single electric drive for a spinning device.
  • the spinning rotor is supported without contact with its rotor shaft in a magnetic bearing arrangement.
  • a rotor housing surrounding the rotor cup of the spinning rotor communicates with a vacuum source to create and maintain the vacuum necessary in the rotor housing.
  • the rotor housing is closed during the spinning process by means of a pivotally mounted cover element.
  • the magnetic bearing assembly is in turn housed in a drive housing, which connects to the rotor housing.
  • the drive housing and the rotor housing communicate with each other via an opening through which the rotor shaft extends.
  • the rotor housing and the drive housing are sealed together to the outside.
  • the individual drive and the magnetic bearing arrangement should be protected against contamination from the surroundings of the spinning machine by the sealing of the drive housing. Due to the joint sealing, there is also a negative pressure in the drive housing during the spinning process. After the pressure has been equalized, no air flow arises behind the rotor cup in the region of the rotor shaft, so that dust and / or fiber material deposits at this point during the spinning operation.
  • dust and / or fiber material can not only penetrate through the connection opening between the drive housing and the rotor housing. Even if the drive housing is sealed accordingly, dust and fibers can penetrate into the drive housing at transition points between housing parts. A hundred percent sealing is not possible.
  • the load with dust and fiber material is particularly high during operation of the spinning device, since in operation, the processed sliver and the spun yarn are moved.
  • the CH 571 582 A5 discloses a non-generic spinning device.
  • the spinning rotor is driven individually by means of a pneumatic turbine and is supported by means of an air bearing.
  • compressed air is supplied from an external source of the turbine.
  • the air emerging from the turbine is conducted via a channel into the air bearing in which the air is distributed by means of a plurality of passages and passes through a plurality of air supply ducts in the gap between the rotor shaft and a cylindrical, the rotor shaft enveloping support body of the bearing.
  • the air exits through outlets continuously from the camp. For storage, it is necessary that the air in the bearing is in motion throughout the spinning operation.
  • a labyrinth seal is additionally arranged in the shaft passage opening between the rotor housing and the bearing housing.
  • a conical labyrinth seal should be used, so that a weak flow opens into the rotor housing. Because the air in the warehouse must be constantly in motion, the compressed air consumption and thus the energy consumption of such an arrangement are relatively high.
  • the object is achieved by the characterizing features of the method claim 1, the rotor spinning machine according to claim 2 and the spinning device according to claim 3.
  • the drive housing is subjected to compressed air both during the spinning process and during an interruption of the spinning process such that a static overpressure relative to the ambient pressure prevails in the drive housing at least during the spinning process, wherein the connection opening is sealed by means of a labyrinth seal.
  • the drive housing is subjected to compressed air not only during a spinning interruption but also during the spinning process.
  • the resulting overpressure in the drive housing reliably prevents dirt and fiber material from entering the drive housing.
  • the connection opening is sealed by means of a labyrinth seal.
  • Labyrinth seals are known in the art in principle. It is a non-contact shaft seal, so that even at high speeds no wear due to friction occurs.
  • the sealing effect is based on fluidic effects by the extension of the gap to be sealed. The sealing effect depends on the speed of the shaft. A most extensive seal is achieved with a rotating shaft. In a standing wave, the sealing effect is low.
  • the drive housing In spinning operation with a rotating spinning rotor, the drive housing is thus reliably sealed against the rotor housing. Thus, essentially no air escapes from the drive housing.
  • the drive housing thus has a static overpressure. The energy consumption for the compressed air supply is therefore low.
  • At a spinning break and thus standing rotor lets the sealing effect of the labyrinth seal after.
  • a rotor spinning machine with a spinning device in which between the connection opening and the rotor shaft a labyrinth seal is arranged and in which the control device is adapted to control the compressed air source so that the drive housing both during the spinning process as well is acted upon in such a compressed air at an interruption of the spinning process that at least during the spinning process in the drive housing, a static pressure over the ambient pressure prevails.
  • the invention further relates to the spinning device in which a labyrinth seal is arranged between the connection opening and the rotor shaft.
  • Fig. 1 is a schematic view of a spinning station 1 of a rotor spinning machine shown.
  • the control device 4 serves to control the spinning process at the spinning station 1.
  • the spinning device 3 arranged at the spinning station 1 comprises, as in FIG FIG. 2 shown, a spinning rotor 16, the spinning cup 10 at high speed in a rotor housing 9 rotates.
  • the spinning rotor 16 is driven by an electric single drive 20.
  • the spinning rotor 16 is mounted without contact with its rotor shaft designed as a rotor 11 of the single drive 20 both radially and axially in a magnetic bearing 21.
  • the rotor housing 9 is closed during the spinning process by a pivotally mounted cover element 14.
  • the lid member 14 and the rotor housing 9 have to open and close a locking device which is actuated by both a service unit and the operator.
  • FIG. 2 shows a sectional view of the rotor housing 9, which is part of the spinning device 3.
  • the single-motor driven spinning rotor 16 comprises a rotor cup 10, which is arranged on a rotor shaft 11 designed as a rotor 11 of the single-motor drive.
  • the rotor 11 is mounted radially and axially contactless in a magnetic bearing assembly 21.
  • the magnetic bearing 21 is only hinted at.
  • the magnetic bearing 21 also has at the rear end of the rotor shaft a comparable arrangement, not shown here. Further details of a non-contact spinning rotor bearing and the electric single drive are, for example, the DE 198 19 767 A1 or the aforementioned EP 0 972 868 A2 removable.
  • a drive housing 15 connects, which is connected to the rotor housing 9.
  • the drive housing 15 surrounds the magnetic bearing assembly and the rotor 11, which extends through a connection opening 17 between the drive and the rotor housing in the interior of the rotor housing 9 to receive the rotor cup 10.
  • a labyrinth seal 18 seals the connection opening 17.
  • the labyrinth seal 18 is arranged in the region of the annular gap between the rotor shaft 11 and the connection opening 17.
  • the drive housing 15 is provided with the air inlet 12, which opens into a substantially annular storage volume 13.
  • the air inlet 12 is connected via a supply line 7 with a compressed air source 6.
  • the compressed air source 6 is in turn connected via a control line 8 to the control device 4 in connection and can be controlled via this.
  • the compressed air source 6 is controlled by the same control device 4 as the spinning process at the spinning station 1.
  • the compressed air source 6 but also be controlled by its own or by a central control device.
  • the control device 4 can operate, for example, a valve, not shown.
  • the lid member 14 is closed and the rotor housing 9 is acted upon by means of a vacuum source, not shown, with negative pressure.
  • the compressed air source 6 is controlled by the control device 4 so that the drive housing 15 is acted upon by compressed air.
  • the compressed air is adjusted so that in the drive housing 15 not only an overpressure against the air pressure prevails in the rotor housing 9, but it is generated in the drive housing 15, an overpressure relative to the ambient pressure.
  • the air in the vicinity of textile machinery is usually heavily contaminated with dust and fiber fly. The overpressure prevents dust and / or fiber fly can penetrate into the drive housing 15.
  • the labyrinth seal 18 prevents, as long as the spinning rotor rotates, that a pressure equalization takes place between the rotor housing 9 in the drive housing 15. In the drive housing 15 thus no appreciable air movement takes place. Thus, there is a substantially static overpressure in the drive housing. The energy consumption for the compressed air supply is thus low. Only when a spinning break, when the spinning rotor 16 comes to a standstill, the sealing effect of the labyrinth seal 18 after. It comes so through the connection opening 17 to a pressure equalization between the drive housing 15 and the rotor housing 9. The air flow from the drive housing 15 to the rotor housing 9 prevents dust or fiber remains from penetrating the rotor housing 9 in the drive housing 15.
  • the supplied compressed air does not necessarily need to be increased at this stage.
  • the static pressure in the drive housing 15 decreases in favor of the dynamic pressure.
  • the compressed air supply can be increased and the static pressure in the drive housing can be kept constant. Spider breaks are usually short, so energy consumption is not significantly increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP13003141.2A 2012-08-02 2013-06-20 Procédé de fonctionnement d'un dispositif de tissage, métier à tisser à rotor présentant un dispositif de tissage et dispositif de tissage Not-in-force EP2692916B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012015420.8A DE102012015420A1 (de) 2012-08-02 2012-08-02 Verfahren zum Betreiben einer Spinnvorrichtung, Rotorspinnmaschine aufweisend eine Spinnvorrichtung und Spinnvorrichtung

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102012015420 Previously-Filed-Application 2012-08-02

Publications (3)

Publication Number Publication Date
EP2692916A2 true EP2692916A2 (fr) 2014-02-05
EP2692916A3 EP2692916A3 (fr) 2015-05-06
EP2692916B1 EP2692916B1 (fr) 2016-08-31

Family

ID=48746191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003141.2A Not-in-force EP2692916B1 (fr) 2012-08-02 2013-06-20 Procédé de fonctionnement d'un dispositif de tissage, métier à tisser à rotor présentant un dispositif de tissage et dispositif de tissage

Country Status (3)

Country Link
EP (1) EP2692916B1 (fr)
CN (1) CN103572417B (fr)
DE (1) DE102012015420A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3237658B1 (fr) * 2014-12-22 2021-08-18 Rieter Ingolstadt GmbH Métier à filer à rotor comportant une pluralité d'emplacements de travail et un dispositif d'aspiration

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108526A1 (de) * 2014-06-17 2015-12-17 Maschinenfabrik Rieter Ag Offenendspinnvorrichtung mit einer Zwischenkammer
CZ2015321A3 (cs) * 2015-05-14 2016-12-21 Rieter Cz S.R.O. Způsob hromadného zapřádání příze na pracovních místech rotorového dopřádacího stroje a zařízení k jeho provádění
DE102015121963A1 (de) * 2015-12-16 2017-06-22 Rieter Ingolstadt Gmbh Offenendspinnvorrichtung mit einer Luftzuführung
DE102016120989A1 (de) * 2016-11-03 2018-05-03 Rieter Ingolstadt Gmbh Offenend-Spinnvorrichtung und Verfahren zum Betreiben einer Offenend-Spinnvorrichtung
DE102016123698A1 (de) * 2016-12-07 2018-06-07 Saurer Germany Gmbh & Co. Kg Spinnrotor für eine Offenend-Spinnvorrichtung und Offenend- Spinnvorrichtung
DE102017123279A1 (de) * 2017-10-06 2019-04-11 Maschinenfabrik Rieter Ag Rotorspinnmaschine mit wenigstens einer Luftleitung zum Zuführen von Umgebungsluft in ein Lagergehäuse sowie Spinnvorrichtung einer Rotorspinnmaschine
DE102018103876A1 (de) 2018-02-21 2019-08-22 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Spinnvorrichtung einer Rotorspinnmaschine und Spinnvorrichtung einer Rotorspinnmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571582A5 (fr) 1973-01-27 1976-01-15 Toyoda Automatic Loom Works
DE19819767A1 (de) 1998-05-04 1999-11-11 Schlafhorst & Co W Dämpfungseinrichtung für einen berührungslos gelagerten Rotor
EP0972868A2 (fr) 1998-06-20 2000-01-19 W. SCHLAFHORST AG & CO. Palier pour une machine de filature à bout ouvert
DE102006045589A1 (de) 2006-09-27 2008-04-03 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Spinnvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH622291A5 (fr) * 1976-09-09 1981-03-31 Rieter Ag Maschf
CS205913B1 (en) * 1979-04-28 1981-05-29 Oldrich Tesar Open-end spinning machine
DE4219683C2 (de) * 1991-06-28 1997-05-07 Rieter Ingolstadt Spinnerei Offenend-Spinnmaschine
DE4241507A1 (de) * 1992-12-10 1994-06-16 Schurr Stahlecker & Grill Lagerung für einen OE-Spinnrotor
DE102009013987A1 (de) * 2009-03-19 2010-09-23 Oerlikon Textile Gmbh & Co. Kg Offenend-Spinnvorrichtung
DE102009030802A1 (de) * 2009-06-27 2009-11-05 Oerlikon Textile Gmbh & Co. Kg Offenend-Rotorspinnmaschine
DE102009032716A1 (de) * 2009-07-11 2011-01-13 Oerlikon Textile Gmbh & Co. Kg Arbeitsstelle einer Offenend-Rotorspinnmaschine und Verfahren zum Betreiben der Arbeitsstelle
JP5526915B2 (ja) * 2010-03-25 2014-06-18 村田機械株式会社 空気紡績装置及び紡績機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571582A5 (fr) 1973-01-27 1976-01-15 Toyoda Automatic Loom Works
DE19819767A1 (de) 1998-05-04 1999-11-11 Schlafhorst & Co W Dämpfungseinrichtung für einen berührungslos gelagerten Rotor
EP0972868A2 (fr) 1998-06-20 2000-01-19 W. SCHLAFHORST AG & CO. Palier pour une machine de filature à bout ouvert
DE102006045589A1 (de) 2006-09-27 2008-04-03 Oerlikon Textile Gmbh & Co. Kg Verfahren zum Betreiben einer Spinnvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3237658B1 (fr) * 2014-12-22 2021-08-18 Rieter Ingolstadt GmbH Métier à filer à rotor comportant une pluralité d'emplacements de travail et un dispositif d'aspiration

Also Published As

Publication number Publication date
EP2692916B1 (fr) 2016-08-31
EP2692916A3 (fr) 2015-05-06
CN103572417B (zh) 2017-07-28
DE102012015420A1 (de) 2014-02-06
CN103572417A (zh) 2014-02-12

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