EP1233431B1 - Coil winding machine - Google Patents
Coil winding machine Download PDFInfo
- 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
Links
Images
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)
- Winding Filamentary Materials (AREA)
- Coil Winding Methods And Apparatuses (AREA)
Description
- The present invention relates to a coil winding machine for manufacturing coil devices such as engine ignition coils and so on. Conventionally, 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.
- However, the above-described conventional coil devices involve the following problems to be solved:
- 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.
- In the engine ignition coil device, 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).
- In the conventional engine ignition coil device comprising a case with a coil unit potted therein with melted thermoplastic 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 fromDE 1 564 664 andDE 199 19 069 . - According to the present invention there is provide 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 ofFig. 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 awire 3 being fed from a spool 1 with a specified force through atensioning device 2 and anozzle head 4 reciprocating along the longitudinal axis of arotation shaft 5 is wound spirally in layers of wire turns to form a coil on a rotatingcoil bobbin 6 coaxially attached to a rotatingshaft 5 which is driven by adriver 8 under the control of acontroller 7. - In this coil winder, the present invention is implemented by the
nozzle head 4 which, as shown inFig. 2 , is provided at its top with a funnel-shaped hopper 10 forfeeding pellets 9 of insulating resin therein and provided at its periphery with aheater 11 wound thereon, apower source 13 of which can be turned on and off by aswitching circuit 12 under the control of thecontroller 7. Thus, the resin pellets fed in thenozzle head 4 are melted by heat to form an insulating coating on thewire 3 passing thenozzle head 4. - According to the present invention, the
wire 3 is tightly covered with insulation resin while passing thenozzle 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'. - In both embodiments of the present invention, thermoplastic resin is used as insulating resin to form an insulating coating on the
wire 3. - Therefore, the
wire 3 of the coil formed on thebobbin 6 can be restored for re-use by melting the resin coat by heat. - According to the present invention, 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.
- As is apparent from the foregoing, the coil winding machine according to an embodiment of the present invention 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 according to the present invention 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.
Claims (3)
- A coil winding machine for winding a wire (3) fed from a spool (1) with a constant tension through a tensioning device (2) and a nozzle portion (4) reciprocating along the longitudinal axis of a rotation shaft (5) spirally round at least one bobbin (6) attached to the rotation shaft (5),
characterized in that the nozzle portion (4) is filled with melted insulating resin to form an insulating coating on the wire (3) passing through the nozzle portion (4). - A coil winding machine as defined in claim 1, wherein the nozzle portion (4) is provided with a feeder (10) for supplying insulation resin pellets (9) into the nozzle portion (4) and is also provided at its outside with a heater (11) for heating the nozzle portion (4) to melt the resin pellets therein.
- A coil winding machine as defined in claim 1 or 2, wherein the insulating resin is thermoplastic resin.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001081674 | 2001-02-14 | ||
JP2001081674A JP2002246254A (en) | 2001-02-14 | 2001-02-14 | Winding device |
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 (en) |
JP (1) | JP2002246254A (en) |
CN (1) | CN1190809C (en) |
DE (1) | DE60227730D1 (en) |
DK (1) | DK1233431T3 (en) |
TW (1) | TW583693B (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040047081A (en) * | 2002-11-29 | 2004-06-05 | 삼성전자주식회사 | Manufacturing apparatus and method for coil |
EP2031610A1 (en) * | 2006-05-26 | 2009-03-04 | Nittoku Engineering Co., Ltd. | Wire winding system, tension device, and wire winding method |
CN101819876B (en) * | 2010-04-30 | 2012-06-20 | 华中科技大学 | Winding machine |
CN107255219B (en) * | 2017-05-24 | 2022-11-22 | 长安大学 | Industrial butter injection device and method for tunnel advanced geological predictor |
CN110517876B (en) * | 2019-08-24 | 2021-11-19 | 惠州市天捷宝自动化设备有限公司 | Processing equipment for magnetic bar coil |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19919069A1 (en) * | 1999-04-27 | 2000-11-02 | Abb T & D Tech Ltd | Winding method for transformer or coil involves winding a conductor and simultaneously wetting with adhesive |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1564664A1 (en) * | 1966-07-14 | 1970-05-14 | Siemens Ag | Process for the production of soaked windings, in particular coils |
JPS59222323A (en) * | 1983-05-31 | 1984-12-14 | Matsushita Electric Ind Co Ltd | Injection molder |
JPS6072218U (en) * | 1983-10-24 | 1985-05-21 | 日立電線株式会社 | extruder |
JPH04139709A (en) * | 1990-09-29 | 1992-05-13 | Toshiba Lighting & Technol Corp | Manufacture of planar winding and plane inductance element |
JPH05121260A (en) * | 1991-08-06 | 1993-05-18 | Sankyo Seiki Mfg Co Ltd | Flat coil and its manufacture |
JPH06302454A (en) * | 1993-04-13 | 1994-10-28 | Sansen:Kk | Manufacture of coil |
JP3032936B2 (en) * | 1994-08-04 | 2000-04-17 | 矢崎総業株式会社 | Wire covering method and apparatus using vertical cooling water tank |
JP3060361B2 (en) * | 1994-09-27 | 2000-07-10 | 矢崎総業株式会社 | Wire covering device with combined vertical cooling device |
JP3086843B2 (en) * | 1994-11-29 | 2000-09-11 | 矢崎総業株式会社 | Wire coating equipment |
JPH10233331A (en) * | 1997-02-19 | 1998-09-02 | Toyo Denso Co Ltd | Bank winding method for ignition coil |
JPH10278092A (en) * | 1997-04-03 | 1998-10-20 | Chisso Corp | Manufacture of covered wire material and covered rod |
JP2000223343A (en) * | 1999-02-03 | 2000-08-11 | Mitsubishi Materials Corp | Manufacture for flat coil having magnetic core member and its winding jig |
JP2001023445A (en) * | 1999-07-06 | 2001-01-26 | Sumitomo Electric Ind Ltd | Plastic-coated cable and manufacture thereof |
-
2001
- 2001-02-14 JP JP2001081674A patent/JP2002246254A/en active Pending
-
2002
- 2002-01-17 TW TW091100648A patent/TW583693B/en not_active IP Right Cessation
- 2002-02-07 DE DE60227730T patent/DE60227730D1/en not_active Expired - Lifetime
- 2002-02-07 DK DK02002784T patent/DK1233431T3/en active
- 2002-02-07 CN CNB021035725A patent/CN1190809C/en not_active Expired - Fee Related
- 2002-02-07 EP EP02002784A patent/EP1233431B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19919069A1 (en) * | 1999-04-27 | 2000-11-02 | Abb T & D Tech Ltd | Winding method for transformer or coil involves winding a conductor and simultaneously wetting with adhesive |
Also Published As
Publication number | Publication date |
---|---|
DE60227730D1 (en) | 2008-09-04 |
JP2002246254A (en) | 2002-08-30 |
EP1233431A1 (en) | 2002-08-21 |
TW583693B (en) | 2004-04-11 |
CN1371107A (en) | 2002-09-25 |
CN1190809C (en) | 2005-02-23 |
DK1233431T3 (en) | 2008-11-17 |
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