EP0541898B1 - Disque de support - Google Patents

Disque de support Download PDF

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Publication number
EP0541898B1
EP0541898B1 EP92110027A EP92110027A EP0541898B1 EP 0541898 B1 EP0541898 B1 EP 0541898B1 EP 92110027 A EP92110027 A EP 92110027A EP 92110027 A EP92110027 A EP 92110027A EP 0541898 B1 EP0541898 B1 EP 0541898B1
Authority
EP
European Patent Office
Prior art keywords
ring
auxiliary ring
auxiliary
projections
hub
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.)
Expired - Lifetime
Application number
EP92110027A
Other languages
German (de)
English (en)
Other versions
EP0541898A1 (fr
Inventor
Otmar Braun
Herbert Schumacher
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg 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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0541898A1 publication Critical patent/EP0541898A1/fr
Application granted granted Critical
Publication of EP0541898B1 publication Critical patent/EP0541898B1/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 invention relates to a support disc according to the preamble of claim 1.
  • Such a support disc is known for example from DE-A-3 615 777. It is used to support the rotor of an open-end spinning machine and consists of a hub ring made of aluminum, to which the support ring made of elastomeric polyurethane is directly molded in the area of the outer circumference.
  • the support disc can only be used once and is usually replaced by a new disc after previous wear. This is not very satisfactory from an economic point of view.
  • the invention has for its object to further develop a support disc such that the support ring can be replaced independently of the hub ring and has excellent rotational symmetry.
  • the support ring is fixed on the outer circumference of an auxiliary ring
  • the auxiliary ring consists of a polymeric material which has an elastic modulus of 7000 to 13000 N / mm2, one Heat resistance from 150 to 250 ° C and an elongation at break of 1.3 to 3% and that the auxiliary ring is non-positively fixed on the outer circumference of the hub ring with radial expansion of its inner diameter.
  • the support ring and the auxiliary ring form an inseparable unit, which can be produced easily and inexpensively on an industrial scale and does an excellent job of meeting the conditions required here.
  • the unit With regard to the hub ring, the unit is characterized by great dimensional stability, which makes it possible to achieve a secure fixation on the outer circumference of the hub ring in long-term use. The use of secondary aids is unnecessary and it is sufficient to simply press the unit axially onto the hub ring. Since the auxiliary ring is made of a polymeric material, there is no fear of damage to the hub ring even when aluminum is used. After wear has occurred in the area of the support ring, separation from the hub ring is possible in the same sense. It is effected by axially pressing the unit off the hub ring.
  • elastomeric polyurethane Due to the use of elastomeric polyurethane for the production of the support ring, it has a particularly good abrasion resistance in connection with the damping properties suitable for the application, which enables a good service life to be achieved.
  • the auxiliary ring may have an I-shaped profile and the support ring may have a U-shaped profile in the region of its radially inner boundary, the profile of the support ring encompassing the auxiliary ring on both sides with radially inwardly projecting legs.
  • the contact area of the auxiliary ring with respect to the support ring is thereby enlarged, which significantly increases the adhesion of the two rings to one another. Dimensional changes caused by centrifugal force can thereby be countered effectively.
  • the I-shaped profile of the auxiliary ring is penetrated by openings which are uniformly distributed in the circumferential direction and if the legs of the profile of the support ring are integrally formed into one another through the openings.
  • the auxiliary and the support ring are positively fixed to each other by this design, which almost completely excludes mutual separation from one another even under unfavorable operating conditions.
  • polyurea has proven to be favorable with regard to the production of the auxiliary ring. This not only has a modulus of elasticity of 7000 to 13000 N / mm2, a heat resistance of 150 to 250 ° C and an elongation at break of 1.3 to 3%, but also has the property that the elastomeric polyurethane has a good adhesive base while avoiding expensive To offer pre-treatment measures. This is of great advantage for the economy of the production of the support disk according to the invention.
  • elongation at break is understood to mean the change in length of a test specimen at any time, based on the original measuring length of the test specimen (DIN 53455).
  • the modulus of elasticity is understood to mean the relationship between the stress and the elongation in the case of the elongation of the rod with an unimpeded reduction in cross-section (DIN 53457).
  • heat distortion resistance is understood to mean the ability of a test specimen to largely retain its shape up to a certain temperature under certain, static stress (DIN 53461).
  • the auxiliary ring is provided in the region of its inner circumference with at least one holding claw which is movable in the radial direction and can be snapped into a radially outwardly open groove of the hub ring by means of the holding claw.
  • the security of the fixation on the hub ring after the axial pressing is thereby significantly improved
  • disturbances in the rotational symmetry of the auxiliary ring are suppressed, which is of great advantage in terms of avoiding imbalance phenomena.
  • the auxiliary ring has a substantially rectangularly enclosed profile in the region of its inner circumference
  • the web carrying the retaining claw within the axial extent of the profile, in such a way that it only has an axially engaging groove in the profile of the radially outer parts of the profile is separated.
  • the axial overall length of the auxiliary ring can correspond to the known patterns in such an embodiment, which simplifies the replacement of the known support disks by the one proposed according to the invention.
  • there is the possibility of dimensioning the radial width of the groove so small that sufficient deflection of the holding claw is just still guaranteed when axially pressed onto the hub ring and that there is a stop effect with respect to further deflections. This effectively counteracts damage to the web caused by centrifugal force.
  • the auxiliary ring can be penetrated radially in the region of its inner circumference by recesses which are uniformly distributed in the circumferential direction, the recesses being penetrated by projections of the support ring, the projections extending into a radial intermediate zone between the auxiliary ring and the hub ring, the projections producing the inner one Extend protruding circumferential surface of the auxiliary ring in the radial direction inwards, the projections touching the hub ring with support surfaces and, in the region of the support surfaces, being provided with rebounding spaces in the circumferential direction.
  • Overlapping is here through the hub ring in uniform circumferential distances on the one hand touched by components of the auxiliary ring and the support surface of the projections of the support ring. In addition to good rotational symmetry of the ready-to-use support disk, this ensures that the unit comprising the auxiliary and the support ring is secured on the hub ring in a manner that prevents rotation.
  • the support surface should extend essentially parallel to the axis of rotation and, if possible, have a length which essentially corresponds to that of the auxiliary ring. This counteracts undesirable deformations in long-term use and ensures good rotational symmetry.
  • the generally known shaft / hub connections such as, for example, spline connections or polygonal shaft / hub connections, can be provided for connecting the hub ring and a drive shaft used.
  • the support disc shown in Figure 1 is intended for the rotor of an open-end spinning machine, which can reach speeds in the range of 130,000 / min.
  • the support disk consists of a hub ring 1, preferably of aluminum, which is rotationally symmetrical in shape and is enclosed on the outside by a cylindrical surface.
  • the cylinder surface is only interrupted by a groove which engages in the radial direction and is arranged in the region of one end surface.
  • an auxiliary ring 2 which in this example consists of polyurea, is immovably fixed with an elastic expansion of its inner circumference, which has a modulus of elasticity of 10,000 N / mm2, a heat resistance of 200 ° C and an elongation at break of 2.5 %.
  • the auxiliary ring 2 has an essentially I-shaped profile, which is assigned to the axis of rotation of the support disk essentially perpendicular. It is axially penetrated in the central region of its radial extent by bores 4 which are uniformly distributed in the circumferential direction (FIGS. 1, 3, 4).
  • the auxiliary ring 2 On the radially inner side, the auxiliary ring 2 has an essentially rectangular profile, into which a circumferential groove 14 penetrates in the axial direction from the left side.
  • a web 15 of the auxiliary ring 2 which projects in the axial direction and is provided with a circumferential retaining claw 5.
  • the holding claw 5 is engaged in the groove 6 of the hub ring 1, which ensures that the auxiliary ring 2 is fixed on the outer circumference of the hub ring 1 in a manner such that it cannot tumble.
  • the web 15 is deflected into the area of the groove 14 with a radial widening of its diameter and then slide the auxiliary ring 2 in the axial direction onto the outer circumference of the hub ring 1 until the retaining claw 5 in the groove 6 can snap into place.
  • the process like the subsequent separation of the auxiliary ring 2 from the hub ring 1, can be effected without any problems with the aid of a simple press tool (FIGS. 2 and 3).
  • the inside 17 of the hub ring 1 is designed such that a secure shaft / hub connection is ensured with a drive shaft not shown here.
  • the support ring 3 consists of elastomeric polyurethane, which is molded directly onto the auxiliary ring 2. It has an essentially U-shaped profile, which encloses the profile of the auxiliary ring 2 in the region of its outer circumference with legs 9 protruding radially inwards. The legs 9 are connected to each other through the bore 4 of the auxiliary ring 2, whereby the support ring 3 is not only fixed to the auxiliary ring 2 in an adhesive manner, but also due to a mutual, form-fitting enclosure or penetration of the profiles (FIG. 3) . Even at the highest speeds, there is no fear of centrifugal force detaching the support ring 3 from the auxiliary ring 2.
  • FIG. 4 reference is made to an embodiment in which the auxiliary ring 2 is penetrated radially by recesses distributed uniformly in the circumferential direction, the recesses being penetrated by projections of the support ring 3, the projections 11 extending into the radial intermediate zone between the auxiliary ring 2 and the hub ring, the projections 11 projecting from the inner circumferential surface of the auxiliary ring 2 projecting inward in the radial direction, and the projections 11 touch the hub ring 1 with the support surface 13, and in the region of the support surfaces 13, rebounding spaces 12 are adjacent in the circumferential direction.
  • the hub ring 1 is hereby touched by components of the auxiliary ring 2 and the support ring 3 overlapping one another at uniform circumferential distances. In addition to a particularly good, rotationally symmetrical fixing of the auxiliary and the support ring 2, 3 on the hub ring 1, this results in a twist-proof anchoring of both units to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Centrifugal Separators (AREA)

Claims (9)

  1. Disque de support pour un rotor d'une machine de filage à fibre libérée, comportant un anneau intérieur (1) et un anneau de support (3) fixé sur son pourtour extérieur et constitué d'un matériau élastomère, caractérisé en ce que l'anneau de support (3) est fixé sur le pourtour extérieur d'un anneau auxiliaire (2), en ce que l'anneau auxiliaire (2) se compose d'un matériau polymère, qui a un module d'élasticité de 7.000 à 13.000 N/mm2, une stabilité de forme à la chaleur de 150 à 250°C ainsi qu'un allongement à la rupture de 1,3 à 3% et en ce que l'anneau auxiliaire (2) est fixé, avec élargissement radial de son diamètre intérieur et par conjugaison de forces, sur le pourtour extérieur de l'anneau intérieur (1).
  2. Disque de support selon la revendication 1, caractérisé en ce que l'anneau auxiliaire (2) a un profil en forme de I, en ce que l'anneau de support (3) a un profil en forme de U et en ce que le profil de l'anneau de support (3) entoure des deux côtés le profil de l'anneau auxiliaire (2) par des branches (2) faisant saillie radialement vers l'intérieur.
  3. Disque de support selon la revendication 2, caractérisé en ce que le profil en I de l'anneau auxiliaire (2) est traversé par des ouvertures (4) réparties uniformément dans une direction circonférencielle et en ce que les branches (9) du profil en forme de U de l'anneau de support (3) sont agencées de façon à se rejoindre mutuellement et unitairement à travers les ouverture (4).
  4. Disque de support selon une des revendications 1 à 3, caractérisé en ce que l'anneau auxiliaire (2) est constitué de polycarbamide.
  5. Disque de support selon une des revendications 1 à 4, caractérisé en ce que l'anneau auxiliaire (2) est pourvu, dans une zone de son pourtour intérieur, d'au moins un ergot de retenue (5), déplaçable dans une direction radiale, et peut être accroché au moyen de l'ergot de retenue dans une rainure (6), ouverte radialement vers l'extérieur, de l'anneau intérieur.
  6. Disque de support selon la revendication 5, caractérisé en ce que l'ergot de retenue (5) est formé par une nervure qui entoure l'anneau intérieur (1) sur toute sa périphérie.
  7. Disque de support selon une des revendications 1 à 6, caractérisé en ce que l'anneau auxiliaire (2) est traversé radialement par des évidements répartis uniformément dans une direction circonférencielle, en ce que ces évidements sont traversés par des saillies (11) de l'anneau de support (3), en ce que les saillies (11) s'étendent jusque dans une zone intermédiaire radiale existant entre l'anneau auxiliaire (2) et l'anneau intérieur (1), en ce que les saillies (11) dépassent de la surface périphérique intérieure de l'anneau auxiliaire (2) radialement vers l'intérieur et en ce que des creux (12) formés dans la surface périphérique intérieure de l'anneau auxiliaire (2) sont directement adjacents, dans une direction circonférencielle, aux saillies sur les deux côtés.
  8. Disque de support selon la revendication 7, caractérisé en ce que les saillies (11) sont délimitées par une surface de délimitation (13) orientée radialement vers l'intérieur et qui s'étend sensiblement parallèlement à l'axe de rotation.
  9. Disque de support selon la revendication 8, caractérisé en ce que les saillies (11) ont, dans une zone de la surface intérieure de délimitation (13), une longueur qui correspond dans l'essentiel, à celle de l'anneau auxiliaire (2).
EP92110027A 1991-11-08 1992-06-15 Disque de support Expired - Lifetime EP0541898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4136794 1991-11-08
DE4136794A DE4136794A1 (de) 1991-11-08 1991-11-08 Stuetzscheibe

Publications (2)

Publication Number Publication Date
EP0541898A1 EP0541898A1 (fr) 1993-05-19
EP0541898B1 true EP0541898B1 (fr) 1995-03-08

Family

ID=6444366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110027A Expired - Lifetime EP0541898B1 (fr) 1991-11-08 1992-06-15 Disque de support

Country Status (5)

Country Link
US (1) US5221133A (fr)
EP (1) EP0541898B1 (fr)
DE (2) DE4136794A1 (fr)
ES (1) ES2069348T3 (fr)
TR (1) TR26382A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136793C1 (fr) * 1991-11-08 1993-06-03 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4334985B4 (de) * 1993-10-14 2005-12-29 Stahlecker, Fritz Stützscheibe für eine Stützscheibenlagerung eines OE-Spinnrotors und Verfahren zur Herstellung dieser Stützscheibe
DE4437182C1 (de) * 1994-10-18 1995-11-02 Freudenberg Carl Fa Laufscheibe für eine Textilmaschine, insbesondere Spinnmaschine
DE19549466C2 (de) * 1995-03-25 1999-10-14 Rieter Ingolstadt Spinnerei Stützscheibe
DE19712916A1 (de) * 1997-03-27 1998-10-01 Novibra Gmbh Stützscheibe für eine Stützscheibenlagerung von OE-Spinnrotoren
DE19756711C2 (de) * 1997-12-19 2001-07-19 Schlafhorst & Co W Stützscheibenlagerung für einen Offenend-Spinnrotor
DE19908922B4 (de) * 1999-03-02 2007-04-19 Carl Freudenberg Kg Stützscheibe für die Lagerung eines Rotors
US6638390B1 (en) * 1999-12-03 2003-10-28 Delphi Technologies, Inc. Gear production process
DE10039121B4 (de) * 2000-08-07 2007-04-12 Carl Freudenberg Kg Stützscheibe für die Lagerung eines Rotors
DE10046525C2 (de) * 2000-09-19 2003-04-30 Freudenberg Carl Kg Stützscheibe
DE10209007A1 (de) * 2002-02-26 2003-09-04 Stahlecker Gmbh Wilhelm Stützscheibe für eine Stützscheibenlagerung von Offenend-Spinnrotoren
EP2605083B1 (fr) * 2011-12-16 2014-09-10 ETA SA Manufacture Horlogère Suisse Palier lisse d'horlogerie surmoulé

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH571077A5 (fr) * 1974-04-10 1975-12-31 Kugelfischer G Schaefer & Co
DE2428514B1 (de) * 1974-06-12 1975-09-18 Kugelfischer G Schaefer & Co Reibscheibe fuer den Reibantrieb von hochtourig umlaufenden Falschdrall-Drehroehrchen
US4676673A (en) * 1983-07-05 1987-06-30 Fritz Stahlecker Bearing disk construction for supporting a spinning rotor shaft of an open-end spinning machine
DE3615777A1 (de) * 1986-05-10 1987-11-12 Stahlecker Fritz Stuetzscheibe fuer eine stuetzscheibenlagerung eines oe-spinnrotors
DE3719445A1 (de) * 1987-06-11 1988-12-22 Fritz Stahlecker Stuetzscheibe fuer eine stuetzscheibenlagerung
US4892422A (en) * 1988-08-01 1990-01-09 American Suessen Corporation Support assembly for the rotor of an open end yarn spinning apparatus
US4893947A (en) * 1989-01-23 1990-01-16 Hurley Robert E Spinning machine rotor shaft disk
US4893946A (en) * 1989-05-15 1990-01-16 Amkor Industries, Inc. Roller for spinning frame
DE4011632A1 (de) * 1990-04-11 1991-10-17 Fritz Stahlecker Stuetzscheibe fuer eine stuetzscheibenlagerung
DE4019028A1 (de) * 1990-06-14 1991-12-19 Schurr Stahlecker & Grill Stuetzscheibe fuer eine stuetzscheibenlagerung fuer oe-spinnrotoren und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
DE4136794A1 (de) 1993-05-19
DE59201599D1 (de) 1995-04-13
DE4136794C2 (fr) 1993-08-19
US5221133A (en) 1993-06-22
ES2069348T3 (es) 1995-05-01
EP0541898A1 (fr) 1993-05-19
TR26382A (tr) 1995-03-15

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