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EP0794273A1 - Métier à filer à bout libre - Google Patents

Métier à filer à bout libre Download PDF

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Publication number
EP0794273A1
EP0794273A1 EP97102380A EP97102380A EP0794273A1 EP 0794273 A1 EP0794273 A1 EP 0794273A1 EP 97102380 A EP97102380 A EP 97102380A EP 97102380 A EP97102380 A EP 97102380A EP 0794273 A1 EP0794273 A1 EP 0794273A1
Authority
EP
European Patent Office
Prior art keywords
carbide
open
spinning device
end spinning
shaft
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
EP97102380A
Other languages
German (de)
English (en)
Other versions
EP0794273B1 (fr
Inventor
Manfred Knabel
Erich Bock
Edmund Schuller
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau 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 Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0794273A1 publication Critical patent/EP0794273A1/fr
Application granted granted Critical
Publication of EP0794273B1 publication Critical patent/EP0794273B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the object of the present application is to design an open-end spinning device of the type mentioned at the outset in such a way that the wear is reduced further, although the cost is said to be very low to insignificant. This object is achieved with an open-end spinning device according to the features of claim 1.
  • the formation of the bearing surface of the shaft from a carbide ensures that the wear on the axial bearing, ie the wear of the bearing plate, is significantly reduced.
  • a carbon material together with a carbide offers a particularly advantageous, low-friction and low-wear material pairing.
  • the lifespan of an open-end spinning device with an aerostatic thrust bearing can be significantly extended by the inventive design.
  • the use of a boron carbide is particularly favorable since it has a very high hardness and causes little wear on the carbon material.
  • Silicon carbide can be used particularly advantageously as the material for the bearing surface of the shaft. Together with the carbon material of the bearing surface of the thrust bearing, this forms a particularly favorable, low-friction and low-wear pairing of materials even under load.
  • the material pairing can be formed independently of the material of the rotor shaft.
  • the embodiment is particularly cost-effective if, according to a further advantageous embodiment, the bearing surface of the rotor shaft is coated with a carbide.
  • the design of the bearing surface of the shaft is particularly favorable if it consists of a flat ground surface that is coated. It is thereby achieved that the coating can be applied very thinly and at the same time it is ensured that the geometric conditions in the axial bearing are favorable. It is particularly advantageous if the bearing surface of the shaft is coated with a carbide which is embedded in a metal matrix, in particular a nickel matrix.
  • the shaft end can be designed with a carbide tread in a simple and inexpensive manner. It has been shown that it is sufficient for a substantial improvement in the life of the thrust bearing if the running surface is coated in this way. It is obviously not necessary for the entire tread consists of carbide. It is particularly advantageous if a sufficient amount of carbide in the coating bath ensures that the bearing surface of the rotor shaft consists of carbide at least 20% of its running surface. This proportion is already sufficient to achieve significant improvements in the service life of the thrust bearing.
  • the storage area advantageously consists of 25% to 50% carbide. It is particularly favorable if the coating contains silicon carbide.
  • the rest of the shaft can also be coated in one operation, so that the remaining areas of the shaft are wear-resistant without additional costs.
  • a grain size of the carbide grains of the coating between 2 ⁇ m and 6 ⁇ m can be integrated particularly well into the metal matrix and at the same time gives good running properties.
  • the coating has favorable mechanical properties with a thickness between 10 ⁇ m and 30 ⁇ m.
  • an open-end spinning device designed according to the invention is shown in section.
  • the main components are the spinning rotor 1 with its shaft 11 and the rotor plate 12, the rotor housing 2 with the rotor housing seal 21, the bearing block 3 with a receptacle 31 for the axial bearing 6 and a receptacle 32 for the support of the support disks 4, and the support disks 4 itself, for receiving the rotor shaft 11.
  • the drive means 5, a tangential belt, and the axial bearing 6 for the axial support of the rotor shaft 11 are shown.
  • the rotor shaft 11 extends with its end carrying the rotor plate 12 into the rotor housing 2 through the bore of the rotor housing seal 21.
  • the axial bearing 6 is arranged in an adjusting screw 61 and is opposite the free end 111 of the rotor shaft 11.
  • the receptacle 31 has a bore with a thread into which the set screw is screwed in an axially adjustable manner.
  • a lock nut is used for fixation.
  • the connection 62 for supplying the compressed air to the thrust bearing 6 is arranged.
  • the bearing gap 630 extends between this and the shaft end 111.
  • the axial force on the rotor or rotor shaft is applied by support disks 4 which are tilted in a known manner.
  • the axial force component e.g. by means of a drive belt running at an angle to the rotor shaft or also by means of an inclined pressure or drive pulley.
  • the open-end spinning device is attached to the receptacle 33, which is part of the associated spinning machine.
  • FIG. 2a shows a set screw 61 and a bearing plate 63 of an aerostatic axial bearing 6 arranged therein.
  • the bearing plate 63 has a plurality of bores 7 for the air to escape into the bearing gap.
  • a throttle device 8, which consists of a sintered material, is connected upstream of the bores, as a result of which the bearing receives a high degree of rigidity because the short air columns in the holes are hardly compressible.
  • Figure 2b shows the bearing plate 63 of Figure 2a in plan view.
  • the holes 7 are evenly distributed on a circular line at a distance from the center.
  • the bearing plate 63 is made of a carbon material, e.g. Coal graphite.
  • the bearing plate can also consist of a carbonized or graphitized carbon as well as a synthetic resin-bonded carbon graphite material.
  • FIG. 3 shows a shaft end 111 designed according to the invention, which works together with the bearing plate of the axial bearing.
  • the shaft end 111 has a flat ground surface 115 which is coated with a carbide material. This can e.g. Boron carbide or silicon carbide.
  • the shaft end 111 has a slightly smaller diameter in the area of the surfaces 115 than the rest of the shaft, as a result of which the rotor shaft can be pushed more easily into the wedge gap of the support disks when the rotor is inserted into the open-end spinning device.
  • FIG. 4 shows the free end 111 of a rotor shaft designed according to the invention, in which the rotor shaft carries an extension 113, which consists of a carbide material.
  • a carbide material e.g. Boron carbide or silicon carbide.
  • the approach 113 is connected via suitable connecting means, e.g. an adhesive is inserted into the appropriately prepared end of the rotor shaft and fastened.
  • the bearing surface 115 like the bearing surface 115 consisting of a coating, from FIG. 3, is of flat design and is designed with a low roughness depth. Together with the carbide material, this ensures that there is very little wear on the bearing plate.
  • an attachment shown in FIG. 4 it can also be connected to the shaft without a positive fit. That e.g. in that the approach is applied with a flat surface on the surface of the rotor shaft end which is also designed.
  • the attachment can take place, for example, by means of an adhesive.
  • FIG. 5 shows a section through the free end of a rotor shaft configured according to the invention, the bearing surface 115 of which consists of carbide crystals 7, which are in a metallic matrix 71, which here advantageously consists of nickel, are stored.
  • the entire bearing surface 115 consists of carbide, it has been shown that it is already possible with such a coating to realize the favorable running properties between a carbide material and a bearing plate 63 made of carbon material. It has been shown that even with an area share of 20% of the carbide in the total storage area 115, this is sufficient.
  • This type of embodiment of the open-end spinning device according to the invention also has the advantage that not only the bearing surface 115 of the rotor shaft 11 can be coated with, for example, silicon carbide, but also advantageously the rest of the surface of the rotor shaft in one operation, so that it can be coated Protect against wear with silicon carbide. This wear occurs, for example, in the area of the tangential belt 5, in the area of the support disks 4 or in the area of a brake (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP97102380A 1996-03-05 1997-02-14 Métier à filer à bout libre Expired - Lifetime EP0794273B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19608272 1996-03-05
DE19608272 1996-03-05

Publications (2)

Publication Number Publication Date
EP0794273A1 true EP0794273A1 (fr) 1997-09-10
EP0794273B1 EP0794273B1 (fr) 1998-08-12

Family

ID=7787150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102380A Expired - Lifetime EP0794273B1 (fr) 1996-03-05 1997-02-14 Métier à filer à bout libre

Country Status (6)

Country Link
US (1) US5730532A (fr)
EP (1) EP0794273B1 (fr)
CZ (1) CZ287255B6 (fr)
DE (2) DE19705607A1 (fr)
SK (1) SK27897A3 (fr)
TW (1) TW366370B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316629A1 (fr) * 2001-11-29 2003-06-04 Rieter Ingolstadt Spinnereimaschinenbau AG Disque de support et roulement pour un rotor de filature

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10014861A1 (de) * 1999-10-26 2001-05-03 Rieter Ingolstadt Spinnerei Lagerung für einen Offenend-Spinnrotor
US6401444B1 (en) 1999-10-26 2002-06-11 Rieter Ingolstadt Spinnereimaschinenbau Ag Bearing composition for a open-end spin rotor
IT1318240B1 (it) * 2000-07-25 2003-07-28 Balance Systems Spa Dispositivo di arresto assiale di un rotore, in particolare di unindotto di motore elettrico, per macchine equilibratrici.
DE10055443A1 (de) * 2000-11-09 2002-05-29 Wacker Chemie Gmbh Beschichtete Rotorwelle für einen Spinnrotor zum Offenend-Spinnen
DE10106204A1 (de) * 2001-02-10 2002-08-14 Rieter Ingolstadt Spinnerei Offenend-Spinnvorrichtung mit einem aerostatischen Radiallager für einen Spinnrotor
DE10106726A1 (de) * 2001-02-14 2002-08-22 Rieter Ingolstadt Spinnerei Offenend-Spinnrotor mit einer aufsetzbaren Abstützkappe
EP1927687A3 (fr) * 2006-11-29 2010-01-20 Rieter Ingolstadt GmbH Dispositif de tissage à extrémité ouverte doté d'un support axial aérostatique pour un rotor de tissage, support axial aérostatique et procédé de fabrication d'un support axial aérostatique
CN102501317A (zh) * 2011-11-03 2012-06-20 山东瑞天工程器材有限公司 混凝土搅拌运输车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3117755A1 (de) * 1980-05-10 1982-02-11 Rolls-Royce Ltd., London Dichtung fuer den turbinenrotor eines gasturbinentriebwerks
DE3733079A1 (de) * 1986-09-30 1988-04-07 Ngk Spark Plug Co Gaslagerkoerper
DE3942612A1 (de) 1989-12-25 1991-06-27 Schubert & Salzer Maschinen Offenend-spinnvorrichtung
DE4442384C1 (de) * 1994-11-29 1995-12-07 Wanger Gerhard Spindel zur aerostatischen Lagerung eines Offenend-Spinnrotors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4037833A1 (de) * 1990-11-28 1992-06-04 Fritz Stahlecker Oe-spinnrotor
DE59300623D1 (de) * 1992-08-07 1995-10-26 Rieter Ingolstadt Spinnerei Führung für den Schaft eines Offenend-Spinnrotors.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3117755A1 (de) * 1980-05-10 1982-02-11 Rolls-Royce Ltd., London Dichtung fuer den turbinenrotor eines gasturbinentriebwerks
DE3733079A1 (de) * 1986-09-30 1988-04-07 Ngk Spark Plug Co Gaslagerkoerper
DE3942612A1 (de) 1989-12-25 1991-06-27 Schubert & Salzer Maschinen Offenend-spinnvorrichtung
DE4442384C1 (de) * 1994-11-29 1995-12-07 Wanger Gerhard Spindel zur aerostatischen Lagerung eines Offenend-Spinnrotors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1316629A1 (fr) * 2001-11-29 2003-06-04 Rieter Ingolstadt Spinnereimaschinenbau AG Disque de support et roulement pour un rotor de filature

Also Published As

Publication number Publication date
DE59700010D1 (de) 1998-09-17
CZ287255B6 (en) 2000-10-11
EP0794273B1 (fr) 1998-08-12
TW366370B (en) 1999-08-11
DE19705607A1 (de) 1997-09-11
CZ57797A3 (en) 1997-09-17
SK27897A3 (en) 1997-10-08
US5730532A (en) 1998-03-24

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