EP0155917B1 - Electric-power-supplying roller assembly for continuous wire annealing plants - Google Patents

Electric-power-supplying roller assembly for continuous wire annealing plants Download PDF

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Publication number
EP0155917B1
EP0155917B1 EP85830059A EP85830059A EP0155917B1 EP 0155917 B1 EP0155917 B1 EP 0155917B1 EP 85830059 A EP85830059 A EP 85830059A EP 85830059 A EP85830059 A EP 85830059A EP 0155917 B1 EP0155917 B1 EP 0155917B1
Authority
EP
European Patent Office
Prior art keywords
wire
sleeve
arc
roller
segments
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
Application number
EP85830059A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0155917A2 (en
EP0155917A3 (en
Inventor
Sebastiano Parasiliti
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.)
DE ANGELI INDUSTRIE SpA
Original Assignee
DE ANGELI INDUSTRIE SpA
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 DE ANGELI INDUSTRIE SpA filed Critical DE ANGELI INDUSTRIE SpA
Priority to AT85830059T priority Critical patent/ATE46366T1/de
Publication of EP0155917A2 publication Critical patent/EP0155917A2/en
Publication of EP0155917A3 publication Critical patent/EP0155917A3/en
Application granted granted Critical
Publication of EP0155917B1 publication Critical patent/EP0155917B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0004—Devices wherein the heating current flows through the material to be heated
    • H05B3/0009—Devices wherein the heating current flows through the material to be heated the material to be heated being in motion
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/62—Continuous furnaces for strip or wire with direct resistance heating

Definitions

  • the present invention relates to an electric-power-supplying roller assembly for plants for the continuous annealing of wire, particularly steel wire, of the type including means for applying an electrical potential difference between pairs of consecutive rollers for driving the wire to heat the wire by the Joule effect, and in which each of the rollers for driving the wire is rotatably supported and has an electrically-conductive annular portion to which a voltage is applied by means of sliding contact brushes connected to a voltage source, said annular portion comprising a plurality of electrically-conductive segments which are insulated from each other, and said electrical sliding brushes engaging an arc of the said annular portion which is within the arc of winding of the wire and has an angular extent such that a voltage is not applied to the segments at the ends of the arc of winding.
  • An electric-power-supplying roller of the above mentioned type is known from GB-A-1.114.261, which relates to an apparatus for effecting permanent elongation of high tensile steel wire by resistance heating of the wire under tension.
  • Said document describes (Fig. 4) a roller (11) having on its periphery a plurality of V-shaped grooves (13) for receiving the wire to be heated; the two end grooves (13a, 13b) are provided with two side rings (31, 32), each of which is formed as a number of commutator segments (33) and is fixed to one of the side edges of the roller.
  • Each segment (33) presents an outer axially directed flat face (40) which is engaged by two sets (27, 28) of current carrying brushes (43).
  • DE-C-766.288 describes a rotary member ( Figures 1 and 2) for resistance heating of metal strip, which comprises two spaced discs mounted for rotation on a common axis: Each disc is provided with peripheral ring (2) formed as a number of commutator segments. The facing side surfaces of the two rings are conical and each ring has an over-hanging cylindrical inner surface. The side edges of the metal strip (1) to be heated engage the two facing conical surfaces of the rings and the overhanging cylindrical inner surfaces of the rings are engaged by a set of current carrying brushes (3).
  • the description states that the position of the brushes is preferably angularly adjustable in the circumferential direction of the rotary member.
  • the object of the present invention is to provide an electric-power-supplying roller assembly of the above mentioned type having a simple and efficient structure.
  • the present invention provides an electric-power-supplying roller as defined in Claim 1.
  • the electrical- power-supplying roller formed in accordance with the present invention is generally indicated 1.
  • This roller is intended to be used in a plant 2 ( Figure 1) for drawing and annealing a wire 3.
  • the plant 2 includes a device 4 for unwinding the wire 3, a wire-drawing machine 5, an annealing device 6, and a device 7 for rewinding the wire.
  • the annealing device 6 is constituted by a heating chamber 8 and a subsequent cooling chamber 9.
  • Two consecutive pairs of rollers 1 are provided in the heating chamber 8 and an electrical potential difference is applied to each pair of rollers so as to induce the passage of a current for annealing the wire 3 by the Joule effect.
  • each roller 1 has a sleeve 10 over an arc of which the wire 3 is wound.
  • This sleeve 10 has a structure similar to that of an electical commutator of the type used in dynamo-electric machines, and includes a plurality of conductive segments which are insulated from each other by an annular insulating part 11 surrounding a central metal part 11 a of the roller 1.
  • the segments 12 form parts of bars 12a arranged parallel to the axis of the roller 1 and embedded in the insulating part 11.
  • the central metal part 11 a of the roller 1 is rotatably supported by a support structure, not illustrated in the drawing.
  • Sliding electrical contacts 13 engage the sleeve 10 of the roller 1 and are constituted, for example, by graphite brushes slidable in an arcuate support structure 14 and subject to the action of springs, not illustrated.
  • the contacts 13 are connected in known manner to a common voltage source, not illustrated.
  • the contacts 13 engage an angular portion of the sleeve 10 which is within the arc of winding of the wire 3 on the sleeve 10, and has an angular extent slightly less than the extent of this arc.
  • the electrical contacts 13 include two circumferential series of contacts and the contacts of each series are staggered relative to those of the other series so as to cover the whole of the angular portion of the sleeve 10.
  • the arcuate support structure 14 for the contacts 13 is carried by a centrally bored disc 14a fixed to the support structure (not illustrated) of the roller 1 by screws 15 which pass through circumferential slots 16 in the disc 14a. It is thus possible to adjust the angular position of all the contacts 13 relative to the arc of contact between the wire 3 and the sleeve 10 of the roller 1.
  • the structure described above allows the contacts 3 to apply a voltage only to those segments 12 which, at any moment, are in an angular portion of the roller 1 lying within the arc of winding of the wire 3 and having an extent less than the angular extend of this arc, whereby at the beginning of the arc of winding the wire 3 is in contact with a segment 12 to which no voltage is applied and, likewise, at the end of the arc of winding the wire moves away from a segment 12 to which no voltage is applied; thus, sparking at the ends of said arc is precluded by the use of a very simple and efficient structure.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)
EP85830059A 1984-03-09 1985-03-06 Electric-power-supplying roller assembly for continuous wire annealing plants Expired EP0155917B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85830059T ATE46366T1 (de) 1984-03-09 1985-03-06 Kontaktrolleinrichtung zum zufuehren von elektrischem strom in drahtdurchlaufgluehanlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8421173U IT8421173V0 (it) 1984-03-09 1984-03-09 Struttura di rullo di contatto elettrico, particolarmente per impianti per ricuocere in continuo filo metallico.
IT2117384U 1984-03-09

Publications (3)

Publication Number Publication Date
EP0155917A2 EP0155917A2 (en) 1985-09-25
EP0155917A3 EP0155917A3 (en) 1986-05-28
EP0155917B1 true EP0155917B1 (en) 1989-09-13

Family

ID=11177864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85830059A Expired EP0155917B1 (en) 1984-03-09 1985-03-06 Electric-power-supplying roller assembly for continuous wire annealing plants

Country Status (8)

Country Link
EP (1) EP0155917B1 (it)
JP (1) JPS61527A (it)
AT (1) ATE46366T1 (it)
DD (1) DD232930A5 (it)
DE (1) DE3572999D1 (it)
ES (1) ES285217Y (it)
HU (1) HU189966B (it)
IT (1) IT8421173V0 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1312036B1 (it) * 1999-03-30 2002-04-04 Sictra Machinery S R L Ricottore continuo ad effetto juole per trafilatrici multifilo.
US20060049160A1 (en) * 2004-09-08 2006-03-09 Gunnar Holm Method and arrangement for annealing of strips
DE102009008695A1 (de) * 2009-02-12 2010-08-19 Maschinenfabrik Niehoff Gmbh & Co Kg Anordnung, Erzeugnis und Verfahren zur Befestigung eines Kontaktrohres auf einer Welle einer Drahtdurchlauf-Widerstandsglühe
CN102189148B (zh) * 2011-03-09 2012-10-03 张家港市棋瑞德机械制造有限公司 扁金属线材成型装置
CN105080779A (zh) * 2015-08-10 2015-11-25 阜阳祥云木业有限公司 一种木板上漆滚轮

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072760B (de) * 1960-01-07 Brown, Boveri R Cie. Aktiengesellschaft, Mannheim-Käfertal Kontaktvorrichtung für die Zuleitung elektrischer Ströme an bewegtes metallisches Profilmaterial
DE766288C (de) * 1942-10-22 1953-03-02 Werner & Pfleiderer Vorrichtung zum fortlaufenden Waermebehandeln von Blechbaendern mittels eines unmittelbar durch dieselben hindurchzuleitenden elektrischen Stromes
DE939704C (de) * 1952-08-26 1956-03-01 Walter Dr-Ing Reinecken Vorrichtung zum kontinuierlichen Gluehen, Haerten, Vergueten, Anlassen od. dgl. von metallischem Profilmaterial durch elektrischen Strom
US3182167A (en) * 1962-01-23 1965-05-04 Ohio Crankshaft Co Resistance heating apparatus
BE678073A (it) * 1964-03-11
JPS59222535A (ja) * 1983-06-01 1984-12-14 Hitachi Ltd 通電ロ−ラ−

Also Published As

Publication number Publication date
HUT37301A (en) 1985-11-28
IT8421173V0 (it) 1984-03-09
DE3572999D1 (en) 1989-10-19
JPH0465888B2 (it) 1992-10-21
ES285217Y (es) 1986-04-01
JPS61527A (ja) 1986-01-06
HU189966B (en) 1986-08-28
ES285217U (es) 1985-07-16
ATE46366T1 (de) 1989-09-15
EP0155917A2 (en) 1985-09-25
DD232930A5 (de) 1986-02-12
EP0155917A3 (en) 1986-05-28

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