EP1481449B1 - Procede de fabrication d'un balai de charbon multicouche - Google Patents

Procede de fabrication d'un balai de charbon multicouche Download PDF

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Publication number
EP1481449B1
EP1481449B1 EP03706598A EP03706598A EP1481449B1 EP 1481449 B1 EP1481449 B1 EP 1481449B1 EP 03706598 A EP03706598 A EP 03706598A EP 03706598 A EP03706598 A EP 03706598A EP 1481449 B1 EP1481449 B1 EP 1481449B1
Authority
EP
European Patent Office
Prior art keywords
layer
carbon
layers
mold
insulating material
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
EP03706598A
Other languages
German (de)
English (en)
Other versions
EP1481449A1 (fr
Inventor
Rainer Sperling
Martin Schwarzer
Rolf Heilmann
Bernd Rinn
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.)
Schunk Kohlenstofftechnik GmbH
Original Assignee
Schunk Kohlenstofftechnik GmbH
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 Schunk Kohlenstofftechnik GmbH filed Critical Schunk Kohlenstofftechnik GmbH
Publication of EP1481449A1 publication Critical patent/EP1481449A1/fr
Application granted granted Critical
Publication of EP1481449B1 publication Critical patent/EP1481449B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/12—Manufacture of brushes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/46—Auxiliary means for improving current transfer, or for reducing or preventing sparking or arcing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49009—Dynamoelectric machine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49119—Brush

Definitions

  • the invention relates to a method for producing a multi-layer carbon brush comprising at least two first electrically conductive Funh-kions slaughteren of carbon material and at least one insulating layer of electrically insulating material extending between successive first functional layers
  • a multi-layer carbon brush of the aforementioned type is the DE 199 13 599 A1 refer to.
  • Multilayer carbon brushes which consist of Kohleriegeln and running between these insulating layers are often used for smaller reversible motors such.
  • the insulating layer may consist of a film or of insulating adhesive or synthetic resin, one or more powder resins. Due to the higher lateral resistance, the current flowing between the two blades of a commutator covered by the carbon brush is reduced, thus improving the commutation.
  • the known multilayer carbon brushes of the type described above are usually produced in such a way that initially temperature-treated carbon plates are aligned with one another in order to then introduce a film between them. Subsequently there is a mechanical processing, a custom machining and introduction of ropes or strands.
  • multi-layer carbon brush carbon brushes known in which the layers are each electrically conductive, but optionally have different mechanical properties.
  • a corresponding carbon brush is the DE 91 06 977 U1 refer to.
  • the various layers - also called zones - which have different material compositions can be formed by successively introducing two starting layers with different material compositions into a mold before pressing the carbon brushes together and pressing them together. In this case, one zone may have a higher copper content than the other.
  • a carbon brush, referred to as a multilayer abrasive contact, after DE 44 30 745 has layers, each consisting of conductive powder.
  • layers each consisting of conductive powder.
  • two conductive powders are simultaneously introduced into a mold in order to carry out a heat treatment after a compression step.
  • additional layers can be formed by supplying electrically conductive powder to the mold in succession.
  • a method for Hernellen a laminate of carbon is the DE 33 07 090 A1 refer to.
  • sheets of a thermoplastic material are placed by pressing and heat treatment between stackable carbon layers, such as carbon fabric layers, to be exposed to desired pressures and temperatures.
  • the DE 199 02 938 A1 refers to a carbon brush, which consists of sections of different compositions The carbon brush is thereby produced in a pressing process.
  • a starter carbon brush which consists of a first layer of a low-resistance material and an edge layer of a material of high resistance, which ends from the tread of the carbon brush at a distance from the opposite rear side surface.
  • the first and second layers are made together in a mold by filling powder into them, pressing, and then sintering.
  • the present invention is based on the problem of developing a method for producing a multi-layer carbon brush, which consists of at least two electrically conductive functional layers and insulating layers extending between successive functional layers, in such a way that a simplification of manufacture takes place, with the possibility also being created of the insulating layer can be easily adapted to the application range of the multilayer carbon brush to be produced. Also, material properties such as porosity or friction coefficients should be easily adjustable. Furthermore, a problem-free individual design of the thicknesses of the functional layers is to be made possible without complex processing measures being required.
  • the problem is essentially solved in that layer by layer the carbon material or this material containing filler and the electrically insulating material in layer sequence of the produced multilayer carbon brush corresponding order in each case in powder form introduced into a mold, then pressed and then heat treated.
  • the insulating material with a respective layer height should be introduced into the mold such that the insulating layer in the finished multi-layer carbon brush has a thickness d of preferably 100 ⁇ m ⁇ d ⁇ 500 ⁇ m.
  • layered carbon brush only requires one heat treatment step in order to produce a plurality of multi-layer carbon brushes.
  • the plates made of carbon are produced separately from each other, or carbon brushes consisting of several layers having electrically conductive properties are individually produced, as long as the starting materials are first input in a mold.
  • organic or inorganic insulating film such as Al 2 O 3 film
  • one or more powder resins such as phenolic or epoxy resins, fabric film, fiber mat, self-adhesive or adhesive-activated films or combinations thereof are used.
  • Preferred material compositions for the multilayer carbon brushes to be produced or the boards from which the former are obtained include: about 50% by weight of natural graphite, about 50% by weight of synthetic graphite, about 25% by weight Phenol or epoxy or thermoplastic resin in powder form, up in about 40 wt .-% coal tar pitch, the latter being based on 100 wt .-% filler, ie natural graphite and synthetic graphite.
  • composition in powder form is then in the desired extent in layers and separated by the electrically insulating material introduced into a mold and after pressing either cured z.
  • Example in about 15 h up to a temperature T 1 of about 200 ° C or annealed to a final temperature T 2 of about to 600 ° C.
  • the invention relates to a method for producing a multi-layer carbon brush.
  • a multi-layer carbon brush is understood to be one in which functional layers of carbon material which consist of electrically conductive material or containing this - also called Kohler bars - a lsolier harsh runs.
  • the teaching according to the invention comprises the production of multi-layer carbon brushes with two or more functional layers.
  • a multi-layer carbon brush 10 with three carbon bars 12, 14. 16 is shown purely in principle, which are electrically isolated from each other via insulating layers 18.
  • the carbon bars 12, 14, 16 and the insulating layers 18 are perpendicular to the tread 20 of the carbon brush. From the tread 20 opposite surface 22 is a tamping contact 24 with rope or stranded wire 26 from. In that regard, however, reference is made to well-known types of multi-layer carbon brushes of the type described above.
  • the materials forming the individual layers 12, 14, 16, 18 are introduced successively in the desired layer sequence into a die 28 of a pressing device 30.
  • a punch 32 is adjustably arranged to fill the die 28 with various materials to the desired extent.
  • excess material is removed by means of a slide 34.
  • the cross section of the die 28 is such that a multi-layer plate 38 results, which is divided after removal from the die 28 and heat treatment in the usual way in sections 40, 42, 44, the dimensions of those of the produced multilayer Carbon brushes correspond. Then, a custom machining of the sections 40, 42, 44 and insertion of the rope in the usual manner.
  • the plate 38 shown in FIG. 4 consists of the functional material layers 46, 48 made of carbon material, between which the layer 50 consisting of electrically insulating material runs.
  • the insulating layer 18, 50 is preferably obtained by pressing powder materials, it is also possible to arrange a film of electrically insulating material between the individual layers consisting of carbon material, which is pressed together with the carbon material or containing it in the die 28.
  • inorganic or organic films such as Al 2 O 3 film, fabric films or fiber mats, self-adhesive or adhesive-activated films. If necessary, the foils have to be activated.
  • the teaching according to the invention makes it possible to produce multilayer carbon brushes in a simple manner, in which insulating layers have desired thicknesses. For this purpose, it is only necessary to fill in the desired extent in the mold 30 insulating layer material desired height. In this case, however, should be filled to an extent insulating material, the insulating layer has a thickness between 100 microns and 500 microns after pressing the materials.
  • z. B. degree or pressing parameters desired material properties of the individual layers such as porosity can be easily adjusted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Laminated Bodies (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacture Of Motors, Generators (AREA)

Claims (6)

  1. °) Procédé de fabrication d'un balai de charbon multicouches (10) composé d'au moins deux couches fonctionnelles électroconductrices, en matériau à base de charbon et d'au moins une couche isolante (18) en un matériau électro-isolant passant entre deux couches fonctionnelles successives,
    caractérisé en ce qu'
    on applique dans un moule (28), couche par couche, le matériau à base de charbon ou le matériau le contenant comme charge, et le matériau électro-isolant de façon stratifiée, selon l'ordre correspondant au balai de charbon multicouches (10) à réaliser, chaque fois sous forme de poudre, puis on comprime et ensuite on effectue un traitement thermique.
  2. °) Procédé selon la revendication 1,
    caractérisé en ce qu'
    on introduit le matériau isolant dans le moule (28) suivant une hauteur de couche respective pour que dans le balai de charbon multicouches (10) fabriqué, la couche isolante présente une épaisseur (d), de préférence telle que 100 µm ≤ d ≤ 500 µm.
  3. °) Procédé de fabrication d'un balai de charbon multicouches composé d'au moins deux couches fonctionnelles électroconductrices (46, 48) en matériau à base de charbon et d'au moins une couche isolante (50) en un matériau électro-isolant passant entre les deux premières couches fonctionnelles successives,
    caractérisé par les étapes suivantes :
    - fabrication d'une plaque (38) par remplissage avec de la matière à base de charbon suivant des couches correspondant au balai de charbon multicouches à fabriquer ou d'un matériau contenant le charbon comme charge, à l'état de poudre, et du matériau électro-isolant à l'état de poudre ou sous forme de film dans un moule (28),
    - compression des couches dans le moule pour former une plaque (38),
    - traitement thermique de la plaque (38), et
    - division de la plaque en balais de charbon multicouches ou suivant des dimensions proches du contour final.
  4. °) Procédé selon la revendication 3,
    caractérisé en ce que
    le matériau électro-isolant est une poudre de résine de synthèse, un film d'isolant organique ou anorganique, tel qu'un film Al2O3, une ou plusieurs résines en poudre telles que des résines phénoliques ou époxydes, des films tissés, des nappes de fibres, des films autocollants ou à adhésif activé ou des combinaisons de ces moyens.
  5. °) Procédé selon la revendication 3,
    caractérisé en ce que
    la matière première électroconductrice pour la couche fonctionnelle électroconductrice est du graphite naturel, du graphite de synthèse ainsi qu'une résine telle qu'une résine phénolique et/ou de la poix.
  6. °) Procédé selon l'une des revendications 3 à 5,
    caractérisé en ce que
    la matière première se compose d'environ 50 % pondéraux de graphite naturel et d'environ 50 % pondéraux de graphite de synthèse et ainsi que d'environ 25 % pondéraux de résine telle qu'une résine phénolique ou sensiblement 40 % pondéraux de poix, et la résine ou la poix se rapportent à 100 % pondéraux de matière de charge sous la forme de graphite naturel et de graphite de synthèse.
EP03706598A 2002-03-04 2003-03-03 Procede de fabrication d'un balai de charbon multicouche Expired - Lifetime EP1481449B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10209199A DE10209199A1 (de) 2002-03-04 2002-03-04 Verfahren zur Herstellung einer Mehrschicht-Kohlebürste
DE10209199 2002-03-04
PCT/EP2003/002137 WO2003075417A1 (fr) 2002-03-04 2003-03-03 Procede de fabrication d'un balai de charbon multicouche

Publications (2)

Publication Number Publication Date
EP1481449A1 EP1481449A1 (fr) 2004-12-01
EP1481449B1 true EP1481449B1 (fr) 2007-08-15

Family

ID=27770929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03706598A Expired - Lifetime EP1481449B1 (fr) 2002-03-04 2003-03-03 Procede de fabrication d'un balai de charbon multicouche

Country Status (9)

Country Link
US (1) US7308759B2 (fr)
EP (1) EP1481449B1 (fr)
JP (1) JP2005519444A (fr)
KR (1) KR100928851B1 (fr)
CN (1) CN100477415C (fr)
AT (1) ATE370536T1 (fr)
AU (1) AU2003208783A1 (fr)
DE (2) DE10209199A1 (fr)
WO (1) WO2003075417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3018772A1 (fr) 2014-11-05 2016-05-11 Schunk Kohlenstofftechnik GmbH Balai de charbon multicouches et son procede de fabrication

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DE102006006313B4 (de) * 2006-02-08 2008-05-21 Schunk Kohlenstofftechnik Gmbh Verfahren und Vorrichtung zur Herstellung eines mehrschichtigen Pressformkörpers
CN101055964B (zh) * 2007-03-08 2010-05-26 上海东洋炭素工业有限公司 制造夹心炭刷的方法
DE102008059478B4 (de) * 2008-11-28 2015-07-30 Schunk Kohlenstofftechnik Gmbh Kohlebürste zur Übertragung hoher Ströme
DE502009000606D1 (de) * 2009-06-25 2011-06-09 Schunk Kohlenstofftechnik Gmbh Kohlebürste
EP3171493B1 (fr) 2014-07-17 2019-04-24 Tris Inc. Balai de carbone stratifié pour moteur de pompe à carburant
DE102016211290B4 (de) 2016-06-08 2018-07-19 Schunk Kohlenstofftechnik Gmbh Vorrichtung und Verfahren zur Herstellung eines Pressformkörpers
CN107634422A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种用于浸渍到电刷接触面上的悬浮液
CN107634416A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种具有研磨结构的电刷
CN107634421A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种具有研磨结构的电刷
CN107634424A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种具有研磨结构的电刷
CN107634423A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种将悬浮液浸渍到电刷接触面上的方法
CN107634428A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种将悬浮液浸渍到电刷接触面上的方法
CN107634419A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种具有研磨结构的电刷
CN107634415A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种具有研磨结构的电刷
CN107634417A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种用于浸渍到电刷接触面上的悬浮液
CN107634427A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种用于浸渍到电刷接触面上的悬浮液
CN107634418A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种用于浸渍到电刷接触面上的悬浮液
CN107634429A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种将悬浮液浸渍到电刷接触面上的方法
CN107634425A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种将悬浮液浸渍到电刷接触面上的方法
CN107634420A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种用于浸渍到电刷接触面上的悬浮液
CN107634426A (zh) * 2016-07-19 2018-01-26 苏州东翔碳素有限公司 一种将悬浮液浸渍到电刷接触面上的方法
CN111244723B (zh) * 2018-11-28 2022-01-25 苏州东翔碳素有限公司 一种电刷的制备方法
CN111244713B (zh) * 2018-11-28 2022-01-25 苏州东翔碳素有限公司 一种电刷
CN111244710B (zh) * 2018-11-28 2022-01-25 苏州东翔碳素有限公司 一种电刷
DE102021107839A1 (de) 2021-03-29 2022-09-29 Metabowerke Gmbh Schichtkohlebürste für einen Elektromotor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3018772A1 (fr) 2014-11-05 2016-05-11 Schunk Kohlenstofftechnik GmbH Balai de charbon multicouches et son procede de fabrication
DE102014116114A1 (de) 2014-11-05 2016-05-12 Schunk Kohlenstofftechnik Gmbh Mehrschicht-Kohlebürste und Herstellung einer solchen

Also Published As

Publication number Publication date
EP1481449A1 (fr) 2004-12-01
JP2005519444A (ja) 2005-06-30
DE10209199A1 (de) 2003-10-02
KR20040104477A (ko) 2004-12-10
ATE370536T1 (de) 2007-09-15
US7308759B2 (en) 2007-12-18
KR100928851B1 (ko) 2009-11-30
CN100477415C (zh) 2009-04-08
US20050223538A1 (en) 2005-10-13
CN1639925A (zh) 2005-07-13
WO2003075417A1 (fr) 2003-09-12
DE50307958D1 (de) 2007-09-27
AU2003208783A1 (en) 2003-09-16

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