EP1233431B1 - Coil winding machine - Google Patents

Coil winding machine Download PDF

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Publication number
EP1233431B1
EP1233431B1 EP02002784A EP02002784A EP1233431B1 EP 1233431 B1 EP1233431 B1 EP 1233431B1 EP 02002784 A EP02002784 A EP 02002784A EP 02002784 A EP02002784 A EP 02002784A EP 1233431 B1 EP1233431 B1 EP 1233431B1
Authority
EP
European Patent Office
Prior art keywords
coil
wire
resin
winding machine
nozzle portion
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
EP02002784A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1233431A1 (en
Inventor
Fumio Tachikawa
Ryuichi Kimata
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.)
Honda Motor Co Ltd
Toyo Denso Co Ltd
Original Assignee
Honda Motor Co Ltd
Toyo Denso Co Ltd
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 Honda Motor Co Ltd, Toyo Denso Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP1233431A1 publication Critical patent/EP1233431A1/en
Application granted granted Critical
Publication of EP1233431B1 publication Critical patent/EP1233431B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/082—Devices for guiding or positioning the winding material on the former
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/12—Ignition, e.g. for IC engines

Definitions

  • the present invention relates to a coil winding machine for manufacturing coil devices such as engine ignition coils and so on.
  • the insulation of a coil device is achieved by winding an electrically conductive wire previously covered with an enamel coat into a coil unit or by winding uncovered wire into a coil unit, impregnating it in insulation varnish and drying to form an interlayer insulation thereof.
  • a conventional engine ignition coil device is manufactured by the following process:
  • Primary and secondary coils are formed by winding a wire covered with insulation round corresponding bobbins which are then mounted in a coil case (coil casing) and potted with thermoplastic insulation resin (epoxy resin) poured, as melted, into the case, wherein the first and the second coils are impregnated with insulation resin.
  • the case with coils is integrally molded by solidification of the poured resin therein.
  • the coil device manufactured by winding the wire with insulating coating requires a separate process of previously covering the wire with an insulation coat.
  • the process of impregnating the formed coils with insulating varnish (resin) may cause poor coating of multiple turns of the fine wire with insulating resin, resulting in that the coil device has a decreased performance and may be heated to a high temperature while working.
  • its secondary coil formed by winding a fine wire of 0.05 mm in diameter in a large number of turns on the secondary bobbin may be scarcely impregnated with insulating varnish (resin).
  • the coil unit cannot be removed from the case once the resin injected in the case with the coil unit was solidified.
  • a coil winding machine according to the preamble of claim 1 is known from EP 0 860 841 .
  • Methods for coating a wire with insulating material before winding it on a bobbin are known from DE 1 564 664 and DE 199 19 069 .
  • a coil winding machine for winding a non-insulated wire fed with a constant tensioning force from a spool through a tensioning device and a nozzle portion reciprocating along the longitudinal axis of a rotation shaft spirally round bobbins mounted on the rotating shaft, wherein the nozzle portion is filled with melted insulating resin in order to form insulation coating on the wire passing through the nozzleportion.
  • One embodiment of the present invention is defined in claim 2. According to another embodiment of the present invention there is provided a coil winding machine, wherein a thermoplastic resin is used for forming insulating coating on a wire to ensure the re-use of the wire of the coil device.
  • Figure 1 is a schematic illustration of a typical construction of a coil winding machine for manufacturing a coil device.
  • Figure 2 is a schematic illustration of a nozzle portion of the coil winding machine of Fig. 1 , which portion is an embodiment of the invention.
  • Figure 3 is a schematic illustration of a nozzle portion that is another embodiment of the present invention.
  • Fig. 1 is illustrative of a typical construction of coil winder by which a wire 3 being fed from a spool 1 with a specified force through a tensioning device 2 and a nozzle head 4 reciprocating along the longitudinal axis of a rotation shaft 5 is wound spirally in layers of wire turns to form a coil on a rotating coil bobbin 6 coaxially attached to a rotating shaft 5 which is driven by a driver 8 under the control of a controller 7.
  • the present invention is implemented by the nozzle head 4 which, as shown in Fig. 2 , is provided at its top with a funnel-shaped hopper 10 for feeding pellets 9 of insulating resin therein and provided at its periphery with a heater 11 wound thereon, a power source 13 of which can be turned on and off by a switching circuit 12 under the control of the controller 7.
  • the resin pellets fed in the nozzle head 4 are melted by heat to form an insulating coating on the wire 3 passing the nozzle head 4.
  • the wire 3 is tightly covered with insulation resin while passing the nozzle head 4.
  • This process can easily obtain high quality of insulation of the coil device that can have high performance and reliable protection from being heated.
  • This is particularly advantageous for manufacturing a secondary coil consisting of a large number of turns of a fine wire having a diameter of 0.05 mm.
  • Figure 3 is illustrative of a horizontal type nozzle head 4' provided with a hopper 10'.
  • thermoplastic resin is used as insulating resin to form an insulating coating on the wire 3.
  • the wire 3 of the coil formed on the bobbin 6 can be restored for re-use by melting the resin coat by heat.
  • an engine ignition coil device can be manufactured with a single case (casing) in which a coil unit consisting of a primary coil-wound bobbin and a secondary coil-wound bobbin having connecting terminals and cores are assembled and potted with melted insulation resin poured and solidified therein. Since the poured and solidified resin in the ignition coil device is thermoplastic, the coil unit can be removed from the coil case by re-melting by heat the mold resin therein, thus the wire, the connecting terminals and the cores can be further separated from one another.
  • the coil winding machine can manufacture a coil device by winding a wire fed with a specified tension from a nozzle head round a bobbin attached to a rotation shaft, wherein the nozzle head is preliminarily filled with insulation resin melted by heat to form insulating coating on the wire passing through the nozzle head.
  • the advantage of this process is to easily manufacture a high performance coil device having a high-quality interlayer insulation between wire turns of the coil device and having a restricted temperature characteristic.
  • the coil winding machine can produce a coil device by winding round a bobbin a wire covered with an insulating layer of thermoplastic resin, which wire can be restored for re-use in future by melting the insulating resin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Of Coils (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
  • Winding Filamentary Materials (AREA)
EP02002784A 2001-02-14 2002-02-07 Coil winding machine Expired - Lifetime EP1233431B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001081674A JP2002246254A (ja) 2001-02-14 2001-02-14 巻線装置
JP2001081674 2001-02-14

Publications (2)

Publication Number Publication Date
EP1233431A1 EP1233431A1 (en) 2002-08-21
EP1233431B1 true EP1233431B1 (en) 2008-07-23

Family

ID=18937739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002784A Expired - Lifetime EP1233431B1 (en) 2001-02-14 2002-02-07 Coil winding machine

Country Status (6)

Country Link
EP (1) EP1233431B1 (zh)
JP (1) JP2002246254A (zh)
CN (1) CN1190809C (zh)
DE (1) DE60227730D1 (zh)
DK (1) DK1233431T3 (zh)
TW (1) TW583693B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040047081A (ko) * 2002-11-29 2004-06-05 삼성전자주식회사 코일 제조 장치 및 방법
JP4734409B2 (ja) * 2006-05-26 2011-07-27 日特エンジニアリング株式会社 巻線装置、テンション装置、及び巻線方法
CN101819876B (zh) * 2010-04-30 2012-06-20 华中科技大学 一种绕线机
CN107255219B (zh) * 2017-05-24 2022-11-22 长安大学 一种隧道超前地质预报仪工业黄油注入装置及方法
CN110517876B (zh) * 2019-08-24 2021-11-19 惠州市天捷宝自动化设备有限公司 磁棒线圈的加工设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919069A1 (de) * 1999-04-27 2000-11-02 Abb T & D Tech Ltd Verfahren zur Herstellung einer Wicklung und Wicklung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1564664A1 (de) * 1966-07-14 1970-05-14 Siemens Ag Verfahren zur Herstellung getraenkter Wicklungen,insbesondere von Spulen
JPS59222323A (ja) * 1983-05-31 1984-12-14 Matsushita Electric Ind Co Ltd 射出成形機
JPS6072218U (ja) * 1983-10-24 1985-05-21 日立電線株式会社 押出機
JPH04139709A (ja) * 1990-09-29 1992-05-13 Toshiba Lighting & Technol Corp 平面状巻線および平面インダクタンス素子の製造方法
JPH05121260A (ja) * 1991-08-06 1993-05-18 Sankyo Seiki Mfg Co Ltd 偏平コイル及びその製造方法
JPH06302454A (ja) * 1993-04-13 1994-10-28 Sansen:Kk コイル製造方法
JP3032936B2 (ja) * 1994-08-04 2000-04-17 矢崎総業株式会社 縦型冷却水槽を用いた電線被覆方法および装置
JP3060361B2 (ja) * 1994-09-27 2000-07-10 矢崎総業株式会社 複合縦型冷却装置を備えた電線被覆装置
JP3086843B2 (ja) * 1994-11-29 2000-09-11 矢崎総業株式会社 電線被覆装置
JPH10233331A (ja) * 1997-02-19 1998-09-02 Toyo Denso Co Ltd 点火コイルのバンク巻方法
JPH10278092A (ja) * 1997-04-03 1998-10-20 Chisso Corp 被覆線材及び被覆ロッドの製造法
JP2000223343A (ja) * 1999-02-03 2000-08-11 Mitsubishi Materials Corp 磁芯部材を有する扁平コイルの製造方法及びその巻線用ジグ
JP2001023445A (ja) * 1999-07-06 2001-01-26 Sumitomo Electric Ind Ltd プラスチック被覆ケーブル及びその製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19919069A1 (de) * 1999-04-27 2000-11-02 Abb T & D Tech Ltd Verfahren zur Herstellung einer Wicklung und Wicklung

Also Published As

Publication number Publication date
TW583693B (en) 2004-04-11
DK1233431T3 (da) 2008-11-17
CN1190809C (zh) 2005-02-23
DE60227730D1 (de) 2008-09-04
EP1233431A1 (en) 2002-08-21
CN1371107A (zh) 2002-09-25
JP2002246254A (ja) 2002-08-30

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