EP0406686A2 - Disques d'usure pour machines à friser - Google Patents

Disques d'usure pour machines à friser Download PDF

Info

Publication number
EP0406686A2
EP0406686A2 EP90112233A EP90112233A EP0406686A2 EP 0406686 A2 EP0406686 A2 EP 0406686A2 EP 90112233 A EP90112233 A EP 90112233A EP 90112233 A EP90112233 A EP 90112233A EP 0406686 A2 EP0406686 A2 EP 0406686A2
Authority
EP
European Patent Office
Prior art keywords
wear
sintered material
crimping
metal
materials
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
EP90112233A
Other languages
German (de)
English (en)
Other versions
EP0406686A3 (en
EP0406686B1 (fr
Inventor
Günter Marx
Josef Dr. Bach
Jürgen Dr. Lorenz
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.)
Spinnstoffabrik Zehlendorf AG
Original Assignee
Spinnstoffabrik Zehlendorf 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 Spinnstoffabrik Zehlendorf AG filed Critical Spinnstoffabrik Zehlendorf AG
Priority to AT90112233T priority Critical patent/ATE89343T1/de
Publication of EP0406686A2 publication Critical patent/EP0406686A2/fr
Publication of EP0406686A3 publication Critical patent/EP0406686A3/de
Application granted granted Critical
Publication of EP0406686B1 publication Critical patent/EP0406686B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • the present invention relates to wear washers for crimping machines for the production of synthetic fibers.
  • Such wear washers which are intended to prevent the lateral emergence of the fiber cable to be compressed from the press roll nip of the crimping chamber, are known; your requirement profile will e.g. discussed in great detail in DE-OS 21 13 886.
  • the wear washers must therefore have good thermal conductivity, since when the 10 fiber strands pass through the crimp, and in particular during the dry crimp, friction is generated and this is converted into heat. To perform their function, the wear washers must be in frictional contact with the end faces of the feed rollers and the fiber plugs compressed in the crimping chamber are pushed along them under high pressure. During this process, a lot of heat also develops on the friction surface of the disks, ie in a relatively small area of their surface. The material of the wear washers must therefore be a good conductor of heat so that the heat generated is dissipated quickly and the temperature of the friction surface cannot rise too high and the fibers are not damaged.
  • Abrasion-resistant, hard materials that have been proposed for the production of wear disks are, for example, brass or ceramic (US Pat. No. 4,395,804) or aluminum oxide mixed ceramics, such as (R) ALSIMAG (US Pat. No. 2,311,174).
  • the conventional materials that have this property such as sintered ceramics made of aluminum oxide or zirconium oxide / Silicon dioxide, however, are not sufficiently thermally conductive.
  • Another disadvantage of these very hard materials is the fact that occasional damage to the friction surfaces of rotating disks no longer heals during operation (grinding) and that the end faces of the feed rollers can be damaged.
  • the widely used brass wear washers have good thermal conductivity, but are still too short and do not have sufficient healing properties.
  • Plastic panes have poor thermal conductivity.
  • wear disks which are characterized by optimum abrasion resistance and good thermal conductivity and which moreover have the advantage over conventional materials that they do not cause discoloration of the fiber strands.
  • Wear discs must be manufactured with high precision and advantageously either consist of a relatively abrasion-resistant material or be provided with a special surface treatment so that the cable band or the thread survives the crimping process with the least possible fiber damage.
  • wear-prone parts are not subjected to excessive stress, surface treatment methods such as e.g. Flame, induction and case hardening, for wear protection.
  • surface treatment methods such as e.g. Flame, induction and case hardening, for wear protection.
  • the wear disks according to the invention largely overcome the problems described above.
  • the wear disks according to the invention are characterized in that they consist of a sintered material made of carbon and metals or their alloys, which, with optimal self-healing ability, counteracts the frictional stresses as much as possible against wear.
  • Friction materials of this type convert kinetic energy into thermal energy. Friction materials of this type are now also required on a large scale in automobile construction and general mechanical engineering. These are multi-component sintered materials, some of which are extremely complex. Sintered materials as used in the present invention are also known. They contain optionally for example 5 to 70% graphite, 85 to 30% copper and possibly up to 10%, preferably 8 to 10% tin, up to 15% lead and up to 12% zinc. In the device according to the invention, a high copper content in the range between 70 and 90% is advantageous, preferably over 80%.
  • the metal component particularly preferably consists only of copper. Due to the high copper content, it is possible to increase the thermal conductivity to a large extent, whereby it should exceed 80 W x K ⁇ 1 xm ⁇ 1. It is preferably 80 to 200, in particular 100-150 W x K ⁇ 1 xm ⁇ 1.
  • the thermal conductivity of some particularly well-suited materials, the "metal carbons" mentioned below, is 125 ⁇ 15.
  • the copper can also be replaced by other metals in order to modify the properties of the sintered wear washers depending on the desired stress. So it can be advantageous to e.g. to be replaced by iron, tin, zinc or lead or only to be combined with these elements; but also the high-melting metals of the 4th to 6th subgroup, as sintered materials with carbon, show advantageous luctile, wear-resistant properties.
  • the structure also influences the properties of the required sintered materials, e.g. can be expressed by the apparent density.
  • the apparent density is the quotient of the mass and the macroscopic volume of the material.
  • metal carbons which are among the oldest sintered composites, have proven to be a particularly suitable material for the wear disks according to the invention count and so far have mainly been used as collector brushes for electric motors.
  • Metal carbons which are particularly suitable as a material for the wear disks according to the invention, consist of 80-85% copper, 10-16% lead and 5-9% graphite. Very suitable commercial materials of this type are e.g. the standard metal charcoal qualities BDB or NL from W.L. Eichberg, Berlin.
  • the wear washer according to the invention is distinguished by the fact that it has an optimal combination of wear resistance and self-healing ability, is good heat conductor and, surprisingly, does not cause discoloration on the yarns, as is customary with the common materials.
  • the combination of these positive properties leads to a long, trouble-free runtime of the crimping machines equipped with them.
  • the cable quality is particularly evident in a uniform crimp pattern over the entire cable cross-section, while in the usual methods an irregular sinusoidal or angular toothed crimp shape often occurs in practice.
  • the uniform crimped arch shape guarantees good textile processing, especially on cutting and tearing converters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Cookers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Magnetically Actuated Valves (AREA)
  • Turning (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
EP90112233A 1989-07-01 1990-06-27 Disques d'usure pour machines à friser Expired - Lifetime EP0406686B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90112233T ATE89343T1 (de) 1989-07-01 1990-06-27 Verschleiss-scheiben fuer kraeuselmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921708A DE3921708A1 (de) 1989-07-01 1989-07-01 Verschleiss-scheiben fuer kraeuselmaschinen
DE3921708 1989-07-01

Publications (3)

Publication Number Publication Date
EP0406686A2 true EP0406686A2 (fr) 1991-01-09
EP0406686A3 EP0406686A3 (en) 1991-01-30
EP0406686B1 EP0406686B1 (fr) 1993-05-12

Family

ID=6384120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112233A Expired - Lifetime EP0406686B1 (fr) 1989-07-01 1990-06-27 Disques d'usure pour machines à friser

Country Status (7)

Country Link
US (1) US5105513A (fr)
EP (1) EP0406686B1 (fr)
JP (1) JPH0345731A (fr)
AT (1) ATE89343T1 (fr)
DE (2) DE3921708A1 (fr)
DK (1) DK0406686T3 (fr)
ES (1) ES2042149T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732434A1 (fr) * 1995-03-16 1996-09-18 Fleissner GmbH & Co. Maschinenfabrik Dispositif de frisage à boîte de bourrage pour le frisage de câbles de fils synthétiques

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519882A1 (de) * 1995-05-31 1996-12-12 Hoechst Ag Methode zur Behandlung eines Kabels synthetischer Filamente und Verfahren zur Herstellung von Kabeln gleichmäßig gekräuselter Fasern mit hohem Anfangsmodul
US5839685A (en) * 1995-07-25 1998-11-24 Chen; Jen Hui Anti-static thread feeding wheel for knitting machinery
AUPP773998A0 (en) * 1998-12-16 1999-01-21 Public Transport Corporation of Victoria Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same
US6351877B1 (en) 2000-05-31 2002-03-05 Eastman Chemical Company Synthetic fiber crimper, method of crimping and crimped fiber produced therefrom
US7152288B1 (en) * 2005-07-07 2006-12-26 Celanese Acetate Llc Stuffer box crimper and a method for crimping
CN114921682B (zh) * 2022-06-28 2023-03-28 北京科技大学广州新材料研究院 一种高导热各向同性的石墨球-铜基的复合材料及其制备方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311174A (en) * 1940-12-06 1943-02-16 Du Pont Textile crinkler
DE1435441A1 (de) * 1963-08-19 1968-11-21 Eastman Kodak Co Vorrichtung zum Kraeuseln von bandfoermigem Fadenkabel
US3237270A (en) * 1963-12-11 1966-03-01 Du Pont Stuffer box crimper with composite crimper discs
US3600776A (en) * 1968-11-29 1971-08-24 Teijin Ltd Stuffer crimper
US3618183A (en) * 1970-02-11 1971-11-09 Monsanto Co Insert pressure controller
US3633255A (en) * 1970-03-23 1972-01-11 Du Pont Tow-crimping apparatus
GB1460592A (en) * 1973-05-19 1977-01-06 Girling Ltd Method of manufacturing a friction disc
JPS5192340A (fr) * 1975-02-10 1976-08-13
JPS5253720A (en) * 1975-10-29 1977-04-30 Hitachi Ltd Non-orientated cu-carbon fiber compoite and its manufacturing method
US4115908A (en) * 1978-02-06 1978-09-26 Eastman Kodak Company Apparatus for stuffer box crimping
US4330333A (en) * 1980-08-29 1982-05-18 The Valeron Corporation High titanium nitride cutting material
US4395804A (en) * 1981-05-18 1983-08-02 Eastman Kodak Company Cheekplate holder assembly for stuffer box crimper
US4521944A (en) * 1984-01-23 1985-06-11 Eastman Kodak Company Dowel-aligned multiple plate stuffer box crimper construction for filter tow
IT1173178B (it) * 1984-02-02 1987-06-18 Sipa Spa Macchina crettatrice migliorata per la crettatura di fibre sintetiche e artificiali
US4730371A (en) * 1987-02-17 1988-03-15 E. I. Du Pont De Nemours And Company Coated crimper rolls

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732434A1 (fr) * 1995-03-16 1996-09-18 Fleissner GmbH & Co. Maschinenfabrik Dispositif de frisage à boîte de bourrage pour le frisage de câbles de fils synthétiques

Also Published As

Publication number Publication date
ATE89343T1 (de) 1993-05-15
DE3921708A1 (de) 1991-01-10
US5105513A (en) 1992-04-21
ES2042149T3 (es) 1993-12-01
JPH0345731A (ja) 1991-02-27
DE59001414D1 (de) 1993-06-17
EP0406686A3 (en) 1991-01-30
DK0406686T3 (da) 1993-09-27
EP0406686B1 (fr) 1993-05-12

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