US20110173945A1 - Airjet spinning unit comprising a spindle-shaped component - Google Patents

Airjet spinning unit comprising a spindle-shaped component Download PDF

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Publication number
US20110173945A1
US20110173945A1 US12/998,215 US99821509A US2011173945A1 US 20110173945 A1 US20110173945 A1 US 20110173945A1 US 99821509 A US99821509 A US 99821509A US 2011173945 A1 US2011173945 A1 US 2011173945A1
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US
United States
Prior art keywords
spindle
shaped component
spinning unit
component
airjet spinning
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.)
Abandoned
Application number
US12/998,215
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English (en)
Inventor
Peter Schweier
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Assigned to MASCHINENFABRIK RIETER AG reassignment MASCHINENFABRIK RIETER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHWEIER, PETER
Publication of US20110173945A1 publication Critical patent/US20110173945A1/en
Abandoned legal-status Critical Current

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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
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • D01H4/02—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 a fluid, e.g. air vortex

Definitions

  • the present invention relates to an air jet spinning unit comprising a spindle-shaped component, which comprises a yarn withdrawal channel and is movable along the yarn withdrawal channel.
  • the present invention further relates to a spindle-shaped component for an airjet spinning unit having a yarn withdrawal channel, a cylindrical sliding surface for being received in the airjet spinning unit and a conically tapering spindle tip comprising the entry opening of the yarn withdrawal channel.
  • An airjet spinning unit of the above mentioned type is known from DE 10 2004 044 345 A1.
  • a spring and a pneumatic cylinder are integrated into the known airjet spinning unit for the purpose of moving the spindle-shaped component.
  • the complicated construction of the airjet spinning unit results in a high production outlay.
  • An airjet spinning unit is known from DE 195 01 545 A1, in which the elements for a motion and a support of the spindle-shaped component are not integrated into the airjet spinning unit.
  • the spindle-shaped component is connected to a cylinder which is located outside of the airjet spinning unit and can as a result be moved along the yarn withdrawal channel.
  • the airjet spinning unit is completely open.
  • the external pneumatic cylinder requires a large area of installation space in the airjet spinning device.
  • the airjet spinning unit comprises a magnet for holding the spindle-shaped component in its operational position.
  • the object has been achieved in that the spindle-shaped component comprises a magnetic contact surface for fixing the spindle-shaped component in its operating position in the airjet spinning unit.
  • the only holding means for the spindle-shaped component in the airjet spinning unit is a magnet. It is of course self-evident that a number of magnets can be provided. Further fixing means or holding means in the airjet spinning unit or in the spinning arrangement are not necessary. Production and assembly of the airjet spinning unit are thus greatly simplified.
  • the spindle-shaped component is held in its operating position in the airjet spinning unit in such a way that a conically tapering spindle tip of the spindle-shaped component, which comprises the entry opening of the yarn withdrawal channel, is located in a vortex chamber, in which the fibre strand to be spun is imparted a spinning twist by means of a circulating air current. It is known that operational malfunction can occur in the airjet spinning unit, resulting in the vortex chamber having to be cleaned. In order to eliminate operational malfunctions, the spindle-shaped component is moved parallel to the yarn withdrawal channel in yarn withdrawal direction so that the spindle tip is moved out of the vortex chamber. By these means, fibre deposits can be removed from the vortex chamber.
  • the present invention has the advantage that no complicated designs and/or designs requiring very large installation space are necessary for the purposes of moving the spindle-shaped component.
  • the spindle-shape component can be supported in a very simple cylindrical holding fixture in a base body of the airjet spinning unit and can be moved along the cylindrical holding fixture.
  • at least one magnet can be arranged in the base body. The magnet interacts with the magnetic contact surface provided on the spindle-shaped component and holds the spindle-shaped component in its operating position.
  • at least one magnet can be arranged on the spindle-shaped component or on a holding element connected to said spindle-shaped component.
  • the magnet interacts with a magnetic contact surface on the base body of the airjet spinning unit.
  • the spindle-shaped component in both embodiments can be moved in the opposite direction to the magnetic force along the yarn withdrawal channel in yarn withdrawal direction so that the spindle tip is removed from the vortex chamber.
  • the spindle-shaped component can be moved manually by service personnel.
  • the use of a simple fixing means also permits easy removal of the spindle-shaped component from the airjet spinning unit and replacement by another spindle-shaped component.
  • a lever in particular a pivoted lever, is provided for moving the spindle-shaped component.
  • the lever is advantageously fixed to the base body and connected to the spindle-shaped component by a detachable lock-in connection, so that the spindle-shaped component remains easy to replace.
  • the magnetic contact surface for holding the spindle-shaped component in its operating position is advantageously annular and can be arranged concentrically to the cylindrical sliding surface.
  • the spindle-shaped component comprises a number of components, advantageously three components.
  • a first component comprises the cylindrical sliding surface.
  • the first component advantageously is made of a material which provides good sliding properties in relation to the material of the base body.
  • a synthetic material or a brass or bronze material is advantageous for the first component.
  • the cylindrical sliding surface can also comprise a coating.
  • the second component of the spindle-shaped component comprises the conically tapering spindle tip with the entry opening of the yarn withdrawal channel.
  • the conical outer contour of the second component is advantageously divided into areas having varying concinnity, wherein the cone angle decreases toward the spindle tip.
  • a third component of the spindle-shaped component can comprise the magnetic contact surface for fixing the spindle-shaped component in its operating position.
  • the third component is advantageously formed by a steel ring, which is fixed to the first component.
  • the spindle-shaped component consists of two components.
  • the first component is made of a magnetic material, for example steel.
  • the magnetic contact surface for holding the spindle-shaped component in its operating position can be integrated into the first component, so that the third component can be omitted.
  • the spindle-shaped component consists therefore of one first component, which comprises the cylindrical sliding surface and the magnetic contact surface, and of a second component, which comprises the spindle tip.
  • the spindle-shaped component comprises an injector channel which opens into the yarn withdrawal channel, and also comprising a compressed air supply for supplying the injector channel.
  • the compressed air supply is suitable for mounting a compressed air tube.
  • the injector channel can be supplied with compressed air for a piecing process in such a way that a defined airstream is generated in the yarn withdrawal channel.
  • an airstream, flowing towards the spindle tip can be generated in the yarn withdrawal channel, which serves to guide back a yarn end through the airjet spinning unit in the opposite direction to the yarn withdrawal direction.
  • a circulating airstream can be generated in the yarn withdrawal channel by means of the injector channel.
  • a circulating airstream in the yarn withdrawal channel is in particular then advantageous when a piecing process is carried out without the auxiliary yarn.
  • the present invention has the advantage in that the length of the yarn withdrawal channel in the spindle-shaped component is relatively small.
  • the shortest possible yarn withdrawal channel in the spindle-shaped component can prevent a reduction in yarn quality, which could occur due to excessive contact of the spun yarn with the walls of the yarn withdrawal channel.
  • the length of the yarn withdrawal channel in the spindle-shaped component measures advantageously less than 80 mm, and in particular less than 40 mm.
  • FIG. 1 shows an enlarged representation in longitudinal section of an airjet spinning unit according to the present invention
  • FIG. 2 shows a top view in the direction of the arrow II of FIG. 1 .
  • the airjet spinning unit as shown in FIG. 1 serves to produce a spun yarn 2 from a staple fibre strand 3 .
  • a drafting unit 4 is arranged upstream of the airjet spinning unit 1 .
  • the staple fibre strand 3 to be spun is fed to the drafting unit 4 in drafting direction A and is withdrawn as a spun yarn 2 in yarn withdrawal direction B and fed to a winding device (not shown).
  • the only partly shown drafting unit 4 is preferably a three-cylinder drafting device and comprises therefore three roller pairs, each of which comprises a driven bottom roller and an upper roller designed as a pressure roller. Only the delivery roller pair 5 , 6 is shown, which borders the drafting zone of the drafting device 4 .
  • the staple fibre strand 3 is drafted to the desired degree of fineness in the known way.
  • a thin fibre strand 7 is present, which is drafted, but is still twist-free.
  • the fibre strand 7 is fed via a fibre feed channel 8 to the air jet spinning unit 1 .
  • Located downstream thereof is a so-called vortex chamber 9 , in which the fibre strand 7 receives its spinning twist, so that the spun yarn 2 is formed, which is subsequently withdrawn through a yarn withdrawal channel 10 .
  • a fluid device generates a vortex current during the spinning process in the vortex chamber 9 by means of blowing in compressed air through compressed air nozzles 11 , which run tangentially into the vortex chamber 9 .
  • the compressed air is fed during operation via a compressed air channel 12 .
  • the compressed air reaches at first a ring channel 13 , which surrounds the vortex chamber 9 , to which ring channel 13 said compressed air nozzles 11 are directly connected.
  • the compressed air exiting out of the compressed air nozzles 15 is discharged via an evacuation channel 14 .
  • the channel 14 is arranged annularly surrounding the spindle-shaped component 15 , which comprises the thread withdrawal channel 10 .
  • the spindle-shaped component 15 is stationary during operation.
  • an edge of a fibre guiding surface 16 acting as a twist stop, is arranged, said fibre guiding surface 16 being slightly eccentrically arranged to the thread withdrawal channel 10 in the area of its entry opening 17 .
  • the entry opening 17 of the yarn withdrawal channel 10 is arranged at a conically tapering end of the spindle-shaped component 15 .
  • the conically tapering end is denoted as the spindle tip 18 .
  • the fibres to be spun are, on the one hand, held together in a fibre strand 7 and thus fed from the fibre feed channel 8 into the entry opening 17 of the thread withdrawal channel 10 essentially without a spinning twist.
  • the fibres in the area between the fibre feed channel 8 and the thread withdrawal channel 10 are exposed to the vortex current in the vortex chamber 9 .
  • the vortex current causes the fibres, or at least their end areas, to be driven away radially from the entry opening 17 and wound around the fibres already entering the yarn withdrawal channel 10 .
  • the yarns 2 produced by the above described airjet spinning unit 1 exhibit a core comprising fibres or fibre areas extending essentially in thread longitudinal direction without any significant twist, and an outer area in which the fibres or fibre areas are wound around the core.
  • An air jet spinning unit 1 of this type permits very high spinning speeds, which lie in the range between 300 and 600 m per minute.
  • the drafting unit 4 is first of all is stopped and the feed of staple fibre strands 3 is discontinued.
  • the winding device (not shown) is also stopped.
  • the spindle-shaped component 15 is moved for this purpose along the yarn withdrawal channel 10 in yarn withdrawal direction B so that the spindle tip 18 is removed from the vortex chamber 9 .
  • the fibre deposits clogging the vortex chamber 9 can be evacuated via an evacuation channel 14 connected to a vacuum source (not shown).
  • a base body 19 of the airjet unit 1 comprises a cylindrical holding fixture 20 into which the spindle-shaped component 15 with its cylindrical sliding surface 21 is assembled in a movable way.
  • One or more magnets 22 in the embodiment shown, two magnets 22 , are arranged in the base body 20 .
  • the spindle-shaped component 15 comprises a contact surface 23 made of a magnetic material which interacts with the magnet 22 .
  • the magnets 22 hold the spindle-shaped component 15 in its operating position.
  • the magnetic contact surface 23 is annular in design.
  • the contact surface 23 and the cylindrical sliding surface 21 are arranged concentrically around the yarn withdrawal channel 10 .
  • the spindle-shaped component 15 can be moved in yarn withdrawal direction B along the cylindrical sliding surface 21 for the purpose of cleaning the vortex chamber 9 .
  • the movement of the spindle-shaped component 15 can be carried out manually by service personnel or by means of an automated maintenance carriage which is movable along the airjet spinning machine.
  • a lever 24 for moving the spindle-shaped component 15 can be provided so that the spindle-shaped component 15 may be gripped easily.
  • the lever 24 can be seen in FIG. 2 .
  • the lever 24 is designed as a pivoted lever and is fixed by means of a swivel axle 25 to the base body 19 of the airjet spinning unit 1 .
  • the lever 24 comprises projecting elements 26 which can be locked into place in a groove 27 of the spindle-shaped component 15 .
  • the lever 24 can be operated in its grip area 28 either manually or by automation, whereby the spindle-shaped component 15 is moved parallel to the yarn withdrawal channel 10 . At the same time the lever 24 prevents the spindle-shaped component 15 from falling out of the cylindrical holding fixture 20 when the contact surface 23 is moved away from the effective area of the magnet 22 . When it is necessary to remove the spindle-shaped component 15 completely from the airjet spinning unit 1 , the spindle-shaped component 15 can be very easily lifted out of its lock-in connection in the lever 24 and removed from the airjet spinning unit 1 .
  • the spindle-shaped component 15 is again moved in the opposite direction to the yarn withdrawal direction B and the spindle tip 18 reaches its operating position again in the vortex chamber 9 .
  • the magnets 22 fix the spindle-shaped component 15 at the contact surface 23 .
  • An injector channel 29 which opens into the yarn withdrawal channel 10 is provided in the spindle-shaped component 15 . Furthermore, a compressed air supply 30 is provided in the spindle-shaped component 15 , which compressed air supply 30 can be supplied with compressed air at times for supplying the injector channel 29 .
  • the compressed air supply 30 is designed as a fitting 37 for a compressed air tube (not shown).
  • the injector channel 29 serves to support a piecing process of the airjet spinning unit 1 and can open into the yarn withdrawal channel 10 in a way shown in FIG. 1 , so that the compressed air flowing into the injector channel 29 generates an airstream in the yarn withdrawal channel 10 which flows in the opposite direction to the yarn withdrawal direction B.
  • the injector channel 29 can open into the yarn withdrawal channel 10 in such a way that a circulating airstream is generated in the yarn withdrawal channel 10 .
  • the spindle-shaped component 15 comprises three components 31 , 32 , 33 .
  • a first component 31 of the spindle-shaped component 15 comprises a cylindrical sliding surface 21 , a part of the yarn withdrawal channel 10 and the compressed air supply 30 .
  • the first component 31 then also comprises a groove 27 .
  • a second component 32 forms the conically tapering end of the spindle-shaped component 15 and comprises a spindle tip 18 and the entry opening 17 of the yarn withdrawal channel 10 .
  • the injector channel 29 extends from the compressed air supply 30 through the first component 31 and the second component 32 and opens within the second component 32 into the yarn withdrawal channel 10 .
  • the first component 31 of the spindle-shaped component 15 is made of a synthetic material. This provides the cylindrical sliding surface 21 with good sliding properties in relation to the holding fixture 20 in the base body 19 .
  • the sliding surface advantageously has a diameter of between 15 and 20 mm.
  • a third component 33 of the spindle-shaped component 15 is provided which comprises the magnetic contact surface 23 .
  • the third component 33 consists of a steel ring affixed to the first component 31 .
  • the steel ring 33 can for example be pressed onto the cylindrical sliding surface 21 and fixed there by means of threaded pins 35 (not shown).
  • the distance between the contact surface 23 and the spindle tip 18 in the area of the entry opening 17 is of significance for the properties of the spun yarn 2 .
  • the degree to which the spindle tip 18 projects into the vortex chamber 9 can be varied. Different dimensions can be achieved, for example, when only the height of the steel ring 33 is altered, while all other dimensions remain the same.
  • Steel rings 33 having different height dimensions can hereby be used, or the position of the contact surface 23 can be adjusted by means of the application of washers between the first component 31 and the steel ring 33 . This allows for tolerances in the spindle-shaped component 15 to be balanced out. In order to ensure the exact distance between the spindle tip 18 and the contact surface 23 , it is possible to machine the contact surface 23 of an otherwise finished spindle-shaped component 15 in a final production step.
  • the second component 32 comprising the spindle tip 18 is inserted via cylindrical mounting surfaces 34 into the first component 31 and fixed by means of a threaded pin 35 .
  • sealing rings 36 can be assigned to the mounting surfaces 34 .
  • the second component 32 can be pressed into the first component 31 , which would omit the use of threaded pins 35 and sealing rings 36 .
  • the component 32 comprises a double cone on its outer contour, which has a small cone angle adjacent to the spindle tip 18 and adjoining, a large cone angle.
  • a wear-resistant adapter 39 can be applied to the spindle-shaped component 15 .
  • the adapter 39 can be made of a ceramic material and is inserted into the first component 31 .
  • the yarn withdrawal channel 10 is designed to be as short as possible in length. The length of the yarn withdrawal channel 10 measured from the entry opening 17 to the exit opening 38 is between 40 mm and 60 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Looms (AREA)
US12/998,215 2008-09-29 2009-09-11 Airjet spinning unit comprising a spindle-shaped component Abandoned US20110173945A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008050874.8 2008-09-29
DE102008050874A DE102008050874A1 (de) 2008-09-29 2008-09-29 Luftdüsenspinnaggregat mit spindelförmigem Bauteil
PCT/EP2009/006611 WO2010034416A1 (de) 2008-09-29 2009-09-11 Luftdüsenspinnaggregat mit spindelförmigem bauteil

Publications (1)

Publication Number Publication Date
US20110173945A1 true US20110173945A1 (en) 2011-07-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/998,215 Abandoned US20110173945A1 (en) 2008-09-29 2009-09-11 Airjet spinning unit comprising a spindle-shaped component

Country Status (7)

Country Link
US (1) US20110173945A1 (de)
EP (1) EP2329066B1 (de)
JP (1) JP2012504194A (de)
KR (1) KR20110060961A (de)
CN (1) CN102165111B (de)
DE (1) DE102008050874A1 (de)
WO (1) WO2010034416A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine
CN109891012A (zh) * 2016-11-08 2019-06-14 里特机械公司 用于喷气纺纱机的纺纱喷嘴以及操作这种纺纱喷嘴的方法

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
JP2012102432A (ja) * 2010-11-10 2012-05-31 Murata Mach Ltd 空気紡績装置、紡績ユニット及び空気紡績装置を用いた紡績方法
DE102011053810A1 (de) 2011-09-21 2013-05-16 Maschinenfabrik Rieter Ag Garnbildungselement für eine Spinnstelle einer Luftspinnmaschine sowie Verfahren zur Vorbereitung eines Anspinnvorgangs an einer Luftspinnmaschine
DE102012101039A1 (de) * 2012-02-09 2013-08-14 Maschinenfabrik Rieter Ag Luftspinnmaschine mit separaten Spinn- und Anspinndüsen
CH708164A1 (de) * 2013-06-14 2014-12-15 Rieter Ag Maschf Spinndüse sowie damit ausgerüstete Spinnstelle einer Luftspinnmaschine.
DE102016116693A1 (de) * 2016-09-07 2018-03-08 Maschinenfabrik Rieter Ag Garnbildungselement und Spinndüse für eine Luftspinnmaschine
DE102016118858A1 (de) * 2016-10-05 2018-04-05 Maschinenfabrik Rieter Ag Faserführungselement für eine Spinndüse einer Luftspinnmaschine sowie Verfahren zum Betrieb einer Luftspinnmaschine
DE102018130826A1 (de) * 2018-12-04 2020-06-04 Maschinenfabrik Rieter Ag Spinndüse sowie Verfahren zum Reinigen derselben
EP4043625A1 (de) 2021-02-10 2022-08-17 Saurer Intelligent Technology AG Garnbildungselement

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US4858288A (en) * 1985-04-02 1989-08-22 Burlington Industries, Inc. Method vortex action yarn hairiness reduction
US5511373A (en) * 1994-01-25 1996-04-30 Murata Kikai Kabushiki Kaisha Method and apparatus for piecing a sliver and at least one of a leading yarn and a bobbin yarn
US5638671A (en) * 1995-01-31 1997-06-17 Hans Stahlecker Magnetically held yarn withdrawal navel arrangement
US5647197A (en) * 1995-02-10 1997-07-15 Murata Kikai Kabushiki Kaisha Fiber spinning method and apparatus utilizing a twisting guide
US20070022729A1 (en) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Spinning device for producing a yarn by means of a circulating air flow
US20070227116A1 (en) * 2006-04-13 2007-10-04 Maschinenfabrik Rieter Ag Spindle-shaped component for an air-jet spinning arrangement with an injection channel
US20080190089A1 (en) * 2004-09-09 2008-08-14 Gerd Stahlecker Airjet Spinning Arrangement

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DE29522172U1 (de) * 1995-01-31 2000-05-18 Stahlecker Fritz Fadenabzugsdüse für OE-Spinnvorrichtungen
JP2001295143A (ja) * 2000-04-10 2001-10-26 Murata Mach Ltd 紡績装置
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DE10256319A1 (de) * 2002-11-28 2004-06-09 Wilhelm Stahlecker Gmbh Vorrichtung zum Herstellen eines gesponnenen Fadens
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JP2008510891A (ja) * 2004-08-20 2008-04-10 マシーネンファブリク リーター アクチェンゲゼルシャフト インジェクター通路を備えたスピンドル、及びエアジェット式紡糸機の糸つぎのための方法

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US4858288A (en) * 1985-04-02 1989-08-22 Burlington Industries, Inc. Method vortex action yarn hairiness reduction
US4858420A (en) * 1986-09-16 1989-08-22 Fritz Stahlecker Pneumatic false-twist spinning process and apparatus
US5511373A (en) * 1994-01-25 1996-04-30 Murata Kikai Kabushiki Kaisha Method and apparatus for piecing a sliver and at least one of a leading yarn and a bobbin yarn
US5638671A (en) * 1995-01-31 1997-06-17 Hans Stahlecker Magnetically held yarn withdrawal navel arrangement
US5647197A (en) * 1995-02-10 1997-07-15 Murata Kikai Kabushiki Kaisha Fiber spinning method and apparatus utilizing a twisting guide
US20080190089A1 (en) * 2004-09-09 2008-08-14 Gerd Stahlecker Airjet Spinning Arrangement
US20070022729A1 (en) * 2005-07-27 2007-02-01 Saurer Gmbh & Co. Kg Spinning device for producing a yarn by means of a circulating air flow
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160032498A1 (en) * 2014-07-30 2016-02-04 Maschinenfabrik Rieter Ag Spinning Unit of an Air Spinning Machine and the Operation of such a Machine
US9719192B2 (en) * 2014-07-30 2017-08-01 Maschinenfabrik Rieter Ag Spinning unit of an air jet spinning machine and the operation of such a machine
CN109891012A (zh) * 2016-11-08 2019-06-14 里特机械公司 用于喷气纺纱机的纺纱喷嘴以及操作这种纺纱喷嘴的方法

Also Published As

Publication number Publication date
CN102165111A (zh) 2011-08-24
JP2012504194A (ja) 2012-02-16
WO2010034416A1 (de) 2010-04-01
CN102165111B (zh) 2016-01-27
EP2329066A1 (de) 2011-06-08
EP2329066B1 (de) 2014-08-13
DE102008050874A1 (de) 2010-04-01
KR20110060961A (ko) 2011-06-08

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Owner name: MASCHINENFABRIK RIETER AG, SWITZERLAND

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Effective date: 20110319

STCB Information on status: application discontinuation

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