EP2237291A2 - Mehrschichtige Spule mit mehreren elektrischen Drähten für Transformator und deren Wickelmaschine - Google Patents

Mehrschichtige Spule mit mehreren elektrischen Drähten für Transformator und deren Wickelmaschine Download PDF

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Publication number
EP2237291A2
EP2237291A2 EP10000359A EP10000359A EP2237291A2 EP 2237291 A2 EP2237291 A2 EP 2237291A2 EP 10000359 A EP10000359 A EP 10000359A EP 10000359 A EP10000359 A EP 10000359A EP 2237291 A2 EP2237291 A2 EP 2237291A2
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EP
European Patent Office
Prior art keywords
electric wires
flat
type electric
plural
layer coil
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
EP10000359A
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English (en)
French (fr)
Other versions
EP2237291A3 (de
EP2237291B1 (de
Inventor
Junichi Ishizuki
Takashi Kurata
Yoshimitsu Ito
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.)
Hitachi Industrial Equipment Systems Co Ltd
Original Assignee
Hitachi Industrial Equipment Systems 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 Hitachi Industrial Equipment Systems Co Ltd filed Critical Hitachi Industrial Equipment Systems Co Ltd
Publication of EP2237291A2 publication Critical patent/EP2237291A2/de
Publication of EP2237291A3 publication Critical patent/EP2237291A3/de
Application granted granted Critical
Publication of EP2237291B1 publication Critical patent/EP2237291B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • 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
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/069—Winding two or more wires, e.g. bifilar winding
    • 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
    • H01F41/071—Winding coils of special form
    • H01F41/074—Winding flat coils

Definitions

  • the present invention relates to a multi-layer coil for transformer having two or more flat-type electric wires coiled in laminated form for use in a molded transformer and a winding machine adapted to manufacture the multi-layer coil as well.
  • the flat-type electric wires coiled in disk-like form eventually take the form of a rectangle or circle in plan view.
  • the coil can be constrained relatively easily in the longitudinal direction of the flat-type electric wires at its individual corners of rectangle but in the case of a coil having a circular coiling form, corners do not exist unlike the rectangular coil and nothing to constrain the individual flat-type electric wires in the longitudinal direction exists. Accordingly, the product quality management will sometimes face a problem in confirming whether or not register of the overlapped flat-type electric wires are undisturbed in the longitudinal direction or in confirming whether or not laminated lengths of the overlapped flat-type electric wires are sufficiently uniform.
  • the multi-layer coil using a plurality of flat-type electric wires (coiling electric wires) to be coiled has been proposed as described above but with the plural flat-type electric wires used, even when the plural electric wires are molded identically at the molding unit, the molded plural flat-type electric wires are disassembled during subsequent lamination in the stacking unit and the flat-type electric wires in this condition are very difficult to pile up in laminated form and much time is consumed for this kind of work, giving rise to expensiveness of a resultant multi-layer coil.
  • a multi-layer coil manufacture apparatus as proposed by the present applicant to manufacture a multi-layer coil by coiling flat-type electric wires in rectangular form, is disclosed in Japanese Patent No. 3996005 .
  • the multi-layer coil manufacture apparatus has a paired rolling rollers opposing to each other in a direction of the thickness of flat-type electric wires so as to clamp and roll the flat-type electric wires, a stock unit for receiving the rolled flat-type electric wires and a rolling roller controller for controlling the angle of clamping of the rolling rollers, wherein a curved portion constituting a corner and a linear portion constituting a side of the flat-type electric wires are formed reiteratively, the radius of curvature is gradually increased as coiling proceeds from inner peripheral side to outer peripheral side while the radius of curvature is gradually decreased as coiling proceeds from outer peripheral side to inner peripheral side and the linear portion is molded through parallel rolling by paralleling the rolling rollers at an instant that the curved portion shifts to the linear portion, thus making the cross-sectional area of the
  • the flat-type electric wires need to be constrained mutually in such a way that the laminated individual flat-type electric wires will not be disassembled and they do not disturb coiling operation in the same winding machine.
  • the present invention aims at providing a multi-layer coil of plural wires for transformer in which a plurality of flat-type electric wires are fed individually in unconstrained condition but the flat-type electric wires are molded in somewhat mutually constrained condition to ensure easy lamination of the flat-type electric wires, whereby even for a molded transformer of large capacity, the multi-layer coil of plural wires for transformer can be manufactured more inexpensively and also aims at providing its winding machine.
  • a winding machine for a multi-layer coil of plural wires for transformer comprises feeders for supplying a plurality of flat-type electric wires individually, a molding unit for molding, through rolling, electric wire portions which constitute curved portions when the flat-type electric wires will be coiled in disk-like form and a stacking unit for piling up in laminated form the flat-type electric wires molded through the molding unit while coiling them in disk-like form, characterized in that the molding unit operates to simultaneously mold the overlapped plural overlying and underlying flat-type electric wires while keeping the overlapped condition constrained and the stacking unit piles up the thus molded plural flat-type electric wires in laminated form by coiling them in disk-like form.
  • the overlapped plural overlying and underlying flat-type electric wires are piled up in laminated form while being coiled in disk-like form and the flat-type electric wires in overlapped condition are constrained such that a positional shift possibly occurring therebetween does not disturb the lamination.
  • At least two flat-type electric wires are so constrained as to keep the overlapped condition and impersonate a single flat-type electric wire in handling and they are coiled in disk-like form and piled up in laminated form while being kept in constrained condition to ensure that lamination and coiling can be accomplished easily.
  • the plural flat-type electric wires do not displace mutually in their longitudinal direction.
  • the plural flat-type electric wires in the multi-layer coil of plural wires for transformer and its winding machine, can be constrained mutually to overlapped condition by taping applied in the longitudinal direction at intervals of predetermined distances, mutual bonding by a bonding agent applied in the longitudinal direction at intervals of predetermined distances or mechanical coupling such as a raise/recess fitting applied in the longitudinal direction at intervals of predetermined distances.
  • the plural flat-type electric wires can be piled up in laminated form to provide a circular multi-layer coil or a rectangular multi-layer coil through coiling in disk-like form.
  • the flat-type electric wires do not displace mutually, especially, in their longitudinal direction and therefore, high-quality molding and lamination of plural flat-type electric wires can be facilitated through a process similar to molding and lamination of an impersonated single flat-type electric wire and a high-quality multi-layer coil of overlapped plural flat-type wires can be realized at low costs.
  • the capacity of the winding coil for transformer can be increased, giving rise to development into large-sized transformers.
  • the number of wires can be developed in excess of two, leading to applications to further enlarged type of transformers. Furthermore, according to further yet still another aspect of the invention, by performing the process for constraining the plural flat-type electric wires in-line process, winding can be accomplished with time and labor similar to that for winding of the single wire and therefore, the multi-layer coil of plural wires can be manufactured and offered more inexpensively.
  • a winding machine of a multi-layer coil for transformer according to embodiment 1 is schematically illustrated in plan view form in Fig. 1 and its font view is illustrated in Fig. 2 .
  • a plurality of flat-type electric wires are molded in constrained condition by use of a bonding agent so as not to be displaced mutually and are piled up in laminated form, producing a multi-layer coil of plural electric wires.
  • a plurality of flat-type electric wires 1A and 1B are set in feeders 12A and 12B, respectively, and they are independently or individually paid out of the feeders 12A and 12B.
  • a mechanism 2 for coating an adhesive or bonding agent to the bottom of the flat-type electric wire 1B is disposed and before the paid-out flat-type electric wires 1A and 1B are mated with each other in the machine, surfaces through which the flat-type electric wires 1A and 1B are mutually overlapped are coated with the bonding agent (or adhesive).
  • the flat-type electric wire 1B having its bottom surface coated with the bonding agent or adhesive is passed through a leveler 5 while being overlapped on the flat-type electric wire 1A.
  • the leveler 5 functions to eliminate a tendency toward curling each of the flat-type electric wires 1A and 1B has and also to stick the flat-type electric wires 1A and 1B together. Thereafter, an assemblage 1 of the overlapped plural flat-type electric wires is sent to a molding unit 10 by means of a conveyance unit 6. Through rolling, the molding unit 10 operates to mold wire portions which constitute curved portions when the flat-type electric wire 1 will be coiled in disk-like form. The thus rolled and molded flat-type electric wire 1 is piled up while being coiled in laminated disk-like form by use of a stacking unit 11.
  • the bonding agent provides an expedient for constraining the overlapped condition of the plural flat-type electric wires 1A and 1B and the coating mechanism 2 acts as a constraint expedient application unit which applies the bonding agent to the flat-type electric wires.
  • the molding unit 10 and stacking unit 11 can be materialized with the molding unit and stacking unit disclosed in the aforementioned Patent Document 1, respectively, and will not be detailed herein.
  • the molding unit 10 simultaneously molds the flat-type electric wires 1A and 1B of the same shape and same size, so that the flat-type electric wires 1A and 1B can be piled up in laminated form while being coiled in disk-like form by means of the stacking unit 11 as if they were a single flat-type electric wire while keeping the electric wires 1A and 1B conditioned in mutual overlap to permit them to impersonate a single flat-type electric wire.
  • FIG. 3 The whole of a winding machine of a multi-layer coil for transformer according to embodiment 2 is schematically illustrated in plan view form in Fig. 3 and its front view is illustrated in Fig. 4 .
  • Fig. 4 overlapped plural flat-type electric wires are applied with taping so as not to be displaced mutually and then piled up in laminated form to fabricate a multi-layer coil of plural wires.
  • a plurality of flat-type electric wires 1A and 1B are set in feeders 12A and 12B, respectively, and they are independently paid out of the feeders 12A and 12B.
  • the flat-type electric wires 1A and 1B are passed through a leveler 5 so that a tendency toward curling each of the flat-type electric wires 1A and 1B has may be eliminated and thereafter, they are put together in the machine to provide an assemblage 1 of the overlapped plural flat-type electric wires.
  • a tape supply and apply unit 3 instantaneously attaches a tape 7 for flat-type electric wire constraint to the bottom of the lowermost flat-type electric wire 1A.
  • the flat-type electric wire constraint tape 7 is wound around the flat-type electric wire 1 by use of a unit 4 for attachment of the side and top surfaces of the tape, thereby constraining the overlapped condition of flat-type electric wires 1A and 1B. Thereafter, an assemblage 1 of the flat-type electric wires is sent to a molding unit 10 by means of a conveyance unit 6. Through rolling, the molding unit 10 operates to mold wire portions which constitute curved portions when the flat-type electric wire 1 will be coiled in disk-like form. The thus rolled and molded flat-type electric wire 1 is piled up in laminated form while being coiled in disk-like form by means of a stacking unit 11. It will be appreciated that the flat-type electric wire constrain tape 7 can be made of the same material as the paper which has already been used for fixing the coil for transformer and it of course meets a test of characteristics required for molding.
  • the flat-type wire constraint tape 7 provides an expedient for constraining the overlapped condition of the plural flat-type electric wires 1A and 1B and the tape supply and apply unit 3 acts as a constraint expedient application unit.
  • the molding unit 10 and stacking unit 11 can be materialized with those disclosed in the aforementioned Patent Document 1, respectively.
  • the molding unit 10 and the stacking unit 11 operate cooperatively with each other to simultaneously mold the flat-type electric wires 1A and 1B of the same shape and same size as if they were a single flat-type electric wire and to pile them up in laminated form while coiling them in disk-like form.
  • a flat-type electric wire 1A paid out of the feeder 12A (see Fig. 1 ) and a flat-type electric wire 1B paid out of the feeder 12B (see Fig. 1 ) are underlying and overlying, respectively, in overlapped condition and are mechanically coupled with each other by use of a caulking unit 20.
  • the caulking unit 20 has a lower die 21 with a raised part 23 and an upper die 22 with a flat surface 24 confronting the raised part 23.
  • the overlapped flat-type electric wires 1A and 1B are clamped together and pressed by the lower and upper dies 21 and 22 so that a raised portion 25 on the top of flat-type electric wire 1A may be fitted in a recessed portion 26 on the bottom of flat-type electric wire 1B, thus fixing both the flat-type electric wires 1A and 1B in a caulk fashion.
  • a fitting 27 of raised portion 25 of flat-type wire 1A and recessed portion 26 of flat-type wire 1B in the overlapped condition of flat-type electric wires 1A and 1B provides a constraint expedient for preventing the flat-type electric wires 1A and 1B from displacing mutually, especially, in their longitudinal direction and the caulk unit 20 acts as a unit for applying the constraint expedient.
  • Figs. 6A and 6B examples of the multi-layer coil of plural wires for transformer are illustrated in perspective view form. Shown in Fig. 6A is a multi-layer coil coiled in disk-like form to provide a rectangular coil in plan view and shown in Fig. 6B is a multi-layer coil coiled in disk-like form to provide a circular coil in plan view.
  • a flat-type electric wire 1 is shown as having overlapped flat-type electric wires 1A and 1B which are mutually bonded by a bonding agent or which are constrained by means of a mechanical raise/recess fitting such as caulking.
  • Both the electric wires 1A and 1B are constrained as if they were a single flat-type electric wire and can be coiled in disk-like form as in the case of disk-like coiling of the single flat-type electric wire without taking care of possible disassembling.
  • the height of the multi-layer coil of flat-type electric wire 1 is indicated by reference numeral 8 or 9.
  • Figs. 7A and 7B there are illustrated, in perspective view, examples of a multi-layer coil of plural wires for transformer having overlapped flat-type electric wires which are constrained by use of the flat-type electric wire constraint tape 7 and are piled up in laminated form.
  • the flat-type electric wire constraint tape 7 is as thin as possible because it is responsible for increasing height 8A or 9A of the flat-type wire to be piled up in laminated form. But if application of the flat-type electric wire constraint tapes 7 is concentrated to the same coiling phase position (in the figure, 4 coiling phase positions), the pile-up height 8A or 9A of the flat-type electric wire 1 increases, raising a problem that the coil height increases.
  • fabricating proceeds while controlling the position where the flat-type electric wire constraint tape 7 is attached by means of the tape supply and apply unit 3 in such a manner that when the flat-type electric wire 1 is piled up in laminated form by the stacking unit 11, the flat-type electric wire constraint tapes 7 are not concentrated to the same coiling phase position across respective turns of disk-like coiling as shown in Figs. 8A and 8B . In this manner, the pile-up height 8B or 9B of flat-type electric wire 1 can be suppressed as small as permissible.
  • the flat-type electric wires since at least two flat-type electric wires can be kept in overlapped condition by means of the constraint expedient during coiling them in laminated disk-like form, the flat-type electric wires will not be disassembled in the stacking unit but are molded as if they were a single flat-type electric wire and then are coiled in disk-like form and piled up in laminated form. Due to the fact that the plural flat-type wires are mutually constrained inside the winding machine, the present invention is advantageous over the prior art when taking preparatory arrangements into account and besides, operation disturbance, for example, stoppage of normal winding operation as required in case the plural flat-type electric wires are desired to be constrained in the course of operation of the winding machine will not occur.
  • the flat-type electric wires do not displace mutually when two or more electric wires in combination are molded and piled up in laminated form, a multi-layer coil meeting a transformer of large capacity can be manufactured and besides, by performing constraint of the plural flat-type wires in-line process, coiling can be achieved with time and labor similar to that for a single wire and so a multi-layer coil of plural electric wires and a transformer using the same can be manufactured more inexpensively.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP10000359.9A 2009-04-02 2010-01-15 Mehrschichtige Spule mit mehreren elektrischen Drähten für Transformator und deren Wickelmaschine Not-in-force EP2237291B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009090142A JP5172767B2 (ja) 2009-04-02 2009-04-02 変圧器用複数線多段コイルの巻線装置

Publications (3)

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EP2237291A2 true EP2237291A2 (de) 2010-10-06
EP2237291A3 EP2237291A3 (de) 2013-03-27
EP2237291B1 EP2237291B1 (de) 2015-12-23

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EP10000359.9A Not-in-force EP2237291B1 (de) 2009-04-02 2010-01-15 Mehrschichtige Spule mit mehreren elektrischen Drähten für Transformator und deren Wickelmaschine

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EP (1) EP2237291B1 (de)
JP (1) JP5172767B2 (de)
CN (2) CN102768900A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017207660A1 (de) * 2017-05-08 2018-11-08 Audi Ag Verfahren zur Herstellung einer Spule
EP3367501A4 (de) * 2015-10-23 2019-08-21 Tomsco Rotierende intelligente automatische herstellungsvorrichtung für flachspulenantenne

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WO2015121943A1 (ja) * 2014-02-13 2015-08-20 株式会社日立産機システム 変圧器用複数線多段コイルの巻線方法、及び変圧器用複数線多段コイル
JP6379689B2 (ja) * 2014-06-03 2018-08-29 株式会社デンソー コイル装置およびコイル装置の製造方法
JP6463128B2 (ja) * 2014-12-26 2019-01-30 オリンパス株式会社 接続構造及び接続方法
KR101673030B1 (ko) * 2015-07-01 2016-11-04 산일전기 주식회사 변압기용 코어 조립체와 그 제조 방법
KR101673029B1 (ko) * 2015-07-01 2016-11-04 산일전기 주식회사 테이핑 장치 및 변압기용 코어 조립체의 제조장치
US10998124B2 (en) 2016-05-06 2021-05-04 Vishay Dale Electronics, Llc Nested flat wound coils forming windings for transformers and inductors
JP7198396B2 (ja) * 2017-12-28 2023-01-04 株式会社セキデン 中空芯コイル及びその製造方法
CN109545540B (zh) * 2018-10-29 2020-12-15 东莞市智感机械电子科技有限公司 全自动多线绕线机
JP7064108B1 (ja) 2021-09-08 2022-05-10 田中精密工業株式会社 モータ巻線製造方法及びモータ巻線製造装置

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Publication number Priority date Publication date Assignee Title
EP3367501A4 (de) * 2015-10-23 2019-08-21 Tomsco Rotierende intelligente automatische herstellungsvorrichtung für flachspulenantenne
DE102017207660A1 (de) * 2017-05-08 2018-11-08 Audi Ag Verfahren zur Herstellung einer Spule

Also Published As

Publication number Publication date
CN101859636B (zh) 2013-02-13
EP2237291A3 (de) 2013-03-27
JP2010245169A (ja) 2010-10-28
CN101859636A (zh) 2010-10-13
EP2237291B1 (de) 2015-12-23
JP5172767B2 (ja) 2013-03-27
CN102768900A (zh) 2012-11-07

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