EP0540818B1 - Stützscheibe - Google Patents

Stützscheibe Download PDF

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Publication number
EP0540818B1
EP0540818B1 EP92110026A EP92110026A EP0540818B1 EP 0540818 B1 EP0540818 B1 EP 0540818B1 EP 92110026 A EP92110026 A EP 92110026A EP 92110026 A EP92110026 A EP 92110026A EP 0540818 B1 EP0540818 B1 EP 0540818B1
Authority
EP
European Patent Office
Prior art keywords
hub ring
ring
support
support disc
disc according
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
EP92110026A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0540818A1 (de
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 EP0540818A1 publication Critical patent/EP0540818A1/de
Application granted granted Critical
Publication of EP0540818B1 publication Critical patent/EP0540818B1/de
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 from US 4,893,947.
  • the support ring and the hub ring are each made of polymer material and are positively connected to one another.
  • the positive connection takes place in the area of the outer circumference of the hub ring, with recesses of the hub ring which are undercut in the radial direction being completely filled by the material of the support ring.
  • the hub ring consists of a nylon-based thermoplastic with a glass fiber content of 5 to 10% by weight.
  • the support ring is made of a flexible elastomer.
  • the hub ring is provided with a cylindrical central recess, in which an axis or shaft is penetrated during the intended use.
  • FIG. 1 Another support disk is known from US Pat. No. 4,893,946, the support ring of which is made of a polymeric material and is positively connected to a hub ring which is preferably made of a metallic material.
  • the positive connection takes place in that a projection of the hub ring or flywheel ring arranged in the radial direction is arranged in an undercut recess of the flywheel ring or hub ring.
  • the connection can, for example, be dovetail-shaped when viewed in cross section.
  • the hub ring has a central, cylindrical recess and is shrunk onto, for example, a lift shaft. If the hub ring consists of a metallic material, the attachment of the support ring to the hub ring is problematic.
  • the hub ring must be thoroughly degreased and then treated in such a way that the support ring made of elastomeric material is fixed on the outer circumference and can be reliably held there during the intended use. In terms of manufacturing technology, the production of such a component is very time-consuming.
  • the invention has for its object to further develop a support disc of the type mentioned in such a way that the axial positioning of the support disc on a drive shaft is simplified, that the support disc is simple, quick and economically producible and has good rotational symmetry.
  • the hub ring consists of a polymeric material which 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% and that Hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into a radially outwardly open groove of a drive shaft used by means of the holding claw.
  • the support ring and the hub 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 is characterized by a high level of dimensional stability, which enables it to be securely fixed in long term use
  • the use of secondary aids is usually unnecessary, and a simple, axial pressing of the hub ring onto the shaft is sufficient.
  • shaft-hub connections known from general mechanical engineering can of course also be used, such as polygon profiles or splined shaft connections.
  • the hub ring is made of polymer material, there is no need to fear damage to the hub ring even when using a steel shaft and a pressed-on 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 a damping behavior suitable for the application, which enables a good service life to be achieved.
  • the hub ring is provided in the region of its inner circumference with at least one holding claw movable in the radial direction and can be snapped into an externally open groove of a drive shaft used by means of the holding claw.
  • the axial positioning of the support disc on the drive shaft is particularly simple.
  • the hub ring can have at least one groove arranged transversely to the circumferential direction in the region of its inner circumference, which can be brought into engagement with at least one projection of the drive shaft.
  • This configuration which can also be combined, for example, with a holding claw, provides additional security against rotation of the support disk on the drive shaft.
  • Shaft-hub connections with a polygonal profile or splined shaft connections are preferred.
  • the hub ring can be I-shaped in the area of its radially outer boundary Profile and the support ring in the region of its radially inner boundary have a U-shaped profile, the U-shaped profile of the support ring encompassing the I-shaped profile of the hub ring on both sides with radially inwardly projecting legs.
  • the contact area of the hub ring with respect to the support ring is thereby enlarged, which significantly increases the adhesion of the two rings to one another. This can effectively counteract changes in the deformation of the support ring caused by centrifugal force.
  • polyurea has proven to be favorable with regard to the production of hub rings. 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 elastic modulus is the relationship between the stress and the elongation in the case of the elongation of the rod understood with 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 hub ring can have a signal transmitter in at least a partial area of its axial boundary surfaces.
  • the signal transmitter can be formed by a light-reflecting film which is adhesively attached to the hub ring.
  • the signal pickup can, for example, be connected in a signal-conducting manner to the drive of the support disk via a control device. Influencing the rotational speed of the support disk is thereby considerably simplified.
  • 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 made of polymeric material, which is rotationally symmetrical in shape and has an I-shaped profile on the outside in the radial direction.
  • the hub ring 1 consists in this example of polyurea and has an elastic modulus of 10000 N / mm2, a heat resistance of 200 ° C and an elongation at break of 2.5%.
  • the hub ring 1 is essentially perpendicular to the axis of rotation 9 of the support disk. It is axially penetrated in the central region of its I-shaped profile, within the radial extent of openings 4 evenly distributed in the circumferential direction, in this special case in the form of bores (FIGS. 1, 3, 4).
  • the support ring 3 consists of elastomeric polyurethane, which is molded directly onto the hub ring 1.
  • the support ring 3 has a substantially U-shaped profile, which surrounds the I-shaped profile of the hub ring 1 with legs 2 projecting radially inwards.
  • the legs 2 are connected to each other by the openings 4 of the hub ring 1, whereby the support ring 3 is not only fixed to the hub ring 1 in an adhesive manner, but also due to a mutual, form-fitting enclosure or penetration of the profiles (FIG. 1, Figure 3). Even at the highest speeds, there is no fear of centrifugal force detaching the support ring 3 from the hub ring 1.
  • FIG. 4 reference is made to an embodiment in which the hub ring 1 is provided in the region of its inner circumference with a holding claw 5 which is movable in the radial direction, the holding claw 5 being snapped into a groove 6 of a drive shaft 7 which is used and is open radially outwards.
  • the axial fixing of the hub ring 1 on the drive shaft 7 is thereby simplified.
  • a further embodiment which is not shown in more detail here, can consist in that in addition to the holding claw which is movable in the radial direction, a hub ring shaft connection is provided which has a polygonal profile or a spline. This ensures additional security in the circumferential direction.
  • the support disk according to the invention is characterized by simple production, low manufacturing costs, unbalance phenomena which cannot be determined over the entire speed range and overall by good usage properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP92110026A 1991-11-08 1992-06-15 Stützscheibe Expired - Lifetime EP0540818B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4136793 1991-11-08
DE4136793A DE4136793C1 (tr) 1991-11-08 1991-11-08

Publications (2)

Publication Number Publication Date
EP0540818A1 EP0540818A1 (de) 1993-05-12
EP0540818B1 true EP0540818B1 (de) 1995-09-27

Family

ID=6444365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110026A Expired - Lifetime EP0540818B1 (de) 1991-11-08 1992-06-15 Stützscheibe

Country Status (6)

Country Link
US (1) US5362160A (tr)
EP (1) EP0540818B1 (tr)
DE (2) DE4136793C1 (tr)
ES (1) ES2078591T3 (tr)
GR (1) GR3018264T3 (tr)
TR (1) TR26381A (tr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511000C2 (de) * 1995-03-25 1998-10-22 Freudenberg Carl Fa Stützscheibe
US5675964A (en) * 1993-04-27 1997-10-14 Fritz Stahlecker Open end spinning supporting disk with asymmetric magnetic rotational speed indicator
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
DE19804868C2 (de) * 1998-02-09 2000-06-21 Freudenberg Carl Fa Stützscheibe
DE29806031U1 (de) * 1998-04-02 1998-06-25 Legrom, Friedrich, 71540 Murrhardt Seitenscheibe für Stützscheibenlagerung einer Rotorspinnmaschine
DE19908922B4 (de) * 1999-03-02 2007-04-19 Carl Freudenberg Kg Stützscheibe für die Lagerung eines Rotors
DE10039121B4 (de) * 2000-08-07 2007-04-12 Carl Freudenberg Kg Stützscheibe für die Lagerung eines Rotors
GB0222480D0 (en) 2002-09-27 2002-11-06 Ricardo Consulting Eng Torsionally damped rotary shafts
US7073474B2 (en) * 2003-11-06 2006-07-11 Brp Us Inc. Flywheel with torsional dampening ring
EP1788128B1 (de) 2005-11-22 2008-01-09 Carl Freudenberg KG Schützscheibe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615777A1 (de) * 1986-05-10 1987-11-12 Stahlecker Fritz Stuetzscheibe fuer eine stuetzscheibenlagerung eines oe-spinnrotors
DE3630257C2 (de) * 1986-09-05 1995-10-12 Schlafhorst & Co W Stützscheibe für die Rotorwelle einer OE-Spinnmaschine
DE3719445A1 (de) * 1987-06-11 1988-12-22 Fritz Stahlecker Stuetzscheibe fuer eine stuetzscheibenlagerung
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
DE4136794A1 (de) * 1991-11-08 1993-05-19 Freudenberg Carl Fa Stuetzscheibe

Also Published As

Publication number Publication date
GR3018264T3 (en) 1996-02-29
ES2078591T3 (es) 1995-12-16
DE59203830D1 (de) 1995-11-02
US5362160A (en) 1994-11-08
TR26381A (tr) 1995-03-15
EP0540818A1 (de) 1993-05-12
DE4136793C1 (tr) 1993-06-03

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