EP0836205B1 - Procédé de bobinage de spires en couches radiales - Google Patents
Procédé de bobinage de spires en couches radiales Download PDFInfo
- Publication number
- EP0836205B1 EP0836205B1 EP97410112A EP97410112A EP0836205B1 EP 0836205 B1 EP0836205 B1 EP 0836205B1 EP 97410112 A EP97410112 A EP 97410112A EP 97410112 A EP97410112 A EP 97410112A EP 0836205 B1 EP0836205 B1 EP 0836205B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- core
- rollers
- winding
- outside
- 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
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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
- H01F41/06—Coil winding
- H01F41/082—Devices for guiding or positioning the winding material on the former
- H01F41/084—Devices for guiding or positioning the winding material on the former for forming pancake coils
Definitions
- the present invention relates to the production of a electric coil whose layers of turns are radial and alternately wound from the inside to the outside and from outside to inside.
- a coil is described in DE-A-12 39 016.
- An object of the present invention is to provide a method of winding such radial layer coils, which is particularly simple to implement.
- Another object of the present invention is to provide such a process which allows, using a single device, make coils of variable internal and external diameters.
- the process includes the steps of forming around a core the layer with an internal diameter greater than diameter of the core, and to exert a traction on the internal whorl to tighten the layer on the core.
- the layer is formed by exerting an axial pressure on the turns during their winding.
- the method further comprises the steps of winding directly around the core the next layer from the inside outward by pressing on the exposed side of this layer; to axially offset the layers by the thickness of two layers; maintain the last layer on the periphery providing a support plan for a new layer; and to realize the new layer wound from the outside to the inside.
- the present invention also relates to an apparatus for implementing the above-mentioned method, comprising a crown radial surrounding the nucleus and defining with it a space winding a current layer; radial rollers extending to the core and urged towards the upper face of the crown; radial wedges movable between a position in contact with the core and a retracted position, these shims being shifted down from the top of the crown of a distance between a layer thickness and two layer thicknesses; and means for lifting the crown compared to the core of two layer thicknesses.
- the crown has retractable platforms associated with rollers to allow the rollers to lower.
- the apparatus includes a wire feeder for supplying the turns during winding at one of the rollers, the debtor being capable of selectively exerting traction or axial pressure on the wire.
- the rollers are conical, their largest diameter being side of the nucleus.
- the rollers are fixed and the whole of the crown, shims and the nucleus is rotating.
- An essential aspect of the winding process according to the invention lies in the production of the wound layers of outside to inside.
- the inner diameter of the layer is inevitably larger than the diameter of the nucleus of the future coil. So, we pull the last turn, that is to say the inner coil, to tighten the whole of the layer on the core, this core can be of section and any diameter.
- Figures 1 and 2A show a top view and a partial side view in section of an embodiment winding apparatus for carrying out the method according to the invention.
- the core 10 of the future coil is arranged substantially in the center of a radial crown 12.
- the space between the core 10 and this crown 12 is intended to receive a layer 14 during winding.
- the internal diameter of the crown therefore determines the maximum external diameter of the coil.
- the upper face of layer 14 is held in place by radial rollers 16 (of which only three are shown) which are biased towards the upper face of the crown 12 and come into contact with the core 10. These rollers 16 slide axially in order to be able to modify the diameter of the core 10.
- the winding wire 14-1 comes tangentially from below one of the rollers 16. To facilitate the introduction of wire 14-1, we can provide an area without rollers in front of the roller which receives the wire.
- the underside of layer 14 is held in place by radial wedges 18 regularly distributed around the core 10 below the crown 12.
- Each of these wedges 18 is movable between a position of contact with the core 10 and a position retracted where the inner end of the wedge is located substantially at the level of the internal diameter of the crown 12. The stroke of these shims 18 and of the rollers 16 determines the minimum core diameter 10.
- the assembly of the crown 12, the core 10, and the shims 18 is likely to be rotated about the axis of the core while the rollers 16 are fixed.
- the rollers 16 are preferably conical, the most large diameter being on the side of the core 10.
- the rollers 16 are then tilted to provide a horizontal plane to maintain the wound layer 14. As a result, the contact zone between each roller 16 and the core 10 is reduced to a point, which reduces friction.
- the crown 12 includes platforms 20 which can be brought into correspondence with the rollers 16 by a rotation of the crown 12. These platforms 20 are retractable down to allow the rollers 16 to lower to reach the plane of the holds 18.
- the wire 14-1 is rectangular or square. We would prefer such a choice, because it facilitates the adjustment of the device according to the section of the thread.
- the distance between the rollers 16 and the shims 18 can then be freely adjusted between once and twice the wire height. It is thus possible, with a single adjustment, to wind wires varying in height from single or double.
- the height of the shims 18 must be adjusted so that the distance separating them rollers 16 is substantially equal to the diameter of the wire, this to prevent the turns of the same layer from overlapping.
- Figures 1 and 2A illustrate a first step in winding of a first layer from the outside to the inside.
- the rollers 16 are in contact with the upper face of the crown 12 and the shims 18 are supported on the core 10.
- the crown 12 (as well as the shims 18 and the core 10) is set clockwise rotation, for example.
- a debtor, no shown, provides wire 14-1 with some axial pressure P in the direction of rotation of the crown 12. This pressure P is chosen so that the turns being wound have tends to move away from the nucleus 10.
- the first turn has tendency to press against the internal diameter of the crown 12 and each subsequent turn tends, as is shown, to be pressed inside the previous turn.
- the layer that we just wound normally has a diameter internal greater than the diameter of the nucleus.
- the next step, illustrated in Figure 2B, is to pull T on wire 14-1 until the layer which has just been wound up tightens on the core 10.
- This traction T is preferably exerted by stopping the crown 12 and operating the debtor in reverse. According to one variant, traction T could be obtained by braking the debtor while the crown 12 continues to rotate.
- the crown 12 performs, if necessary if necessary, a fraction of a turn to bring platforms 20 into correspondence with the rollers 16. So the platforms 20 are lowered while the wedges 18 are retracted. In practical, the layers we just wound are so tight on core 10 that they cannot slide down under the force of the rollers 16. Furthermore, this sliding is not desirable because it could damage the insulation of the turns interior.
- the crown 12 is offset relative to the core 10 the height of two layers, as shown. For this, the crown 12 is lifted, for example, by a jack with position adjustable by digital control. Alternatively, the core 10 could be lowered, which would however disadvantage of doubling the overall height of the device the fact that the core 10 should move to one side and the other from crown 12.
- the shims 18 are slid towards the core 10 and the platforms 20 are then lifted to their initial position.
- the internal ends of the shims 18 come abut against the outer coil of the last wound layer and maintain this layer which would otherwise tend to unfold.
- the device is then ready to repeat the step illustrated in Figure 2A to wind a new layer of outside to inside.
- Each layer can be made to a diameter different. This possibility has the advantage of allowing the creation of intermediate output terminals for which the total number of turns is not a multiple of the number of turns nominal layers.
- the thickness of the shims 18 is chosen to be less than the thickness of the layers. So the holds can still reach the outside diameter of this layer at the Figure 2F.
- the crown 12 is continuous, that is to say devoid of retractable wedges 20.
- a set of pressers is provided which press on the new layer wound in the defined space between the rollers 16, the core 10, and the internal diameter of the crown 12. These pressers descend at the same time as the rollers and continue to descend when rollers 16 abut on the upper face of the crown 12, to bring the last layer wound at the level of the radial shims 18 in FIG. 2E.
- the translational displacements of the various elements of the apparatus, except of the core 10, are ensured by jacks tires, for example.
- the rotation can be ensured by a DC motor.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coil Winding Methods And Apparatuses (AREA)
- Coils Of Transformers For General Uses (AREA)
- Manufacture Of Motors, Generators (AREA)
- Particle Accelerators (AREA)
Description
Claims (8)
- Procédé de bobinage de spires en couches radiales bobinées alternativement de l'extérieur vers l'intérieur et de l'intérieur vers l'extérieur, caractérisé en ce qu'il comprend, pour bobiner une couche de l'extérieur vers l'intérieur, les étapes suivantes :former autour d'un noyau (10) la couche (14) avec un diamètre interne supérieur au diamètre du noyau ; etexercer une traction (T) sur la spire interne pour resserrer la couche sur le noyau.
- Procédé de bobinage selon la revendication 1, caractérisé en ce que la couche est formée en exerçant une pression axiale (P) sur les spires (14-1) pendant leur bobinage.
- Procédé de bobinage selon la revendication 1 ou 2, caractérisé en ce qu'il comprend en outre les étapes suivantes :bobiner directement autour du noyau (10) la couche suivante de l'intérieur vers l'extérieur en exerçant une pression sur la face exposée de cette couche ;décaler axialement les couches de l'épaisseur de deux couches ;maintenir en périphérie la dernière couche en fournissant un plan d'appui à une nouvelle couche ; etréaliser la nouvelle couche bobinée de l'extérieur vers l'intérieur.
- Appareil pour mettre en oeuvre le procédé de bobinage selon une quelconque des revendications 1 à 3, caractérisé en ce qu'il comprend :une couronne radiale (12) entourant le noyau (10) et définissant avec celui-ci un espace de bobinage d'une couche (14) courante ;des rouleaux radiaux (16) s'étendant jusqu'au noyau et sollicités vers la face supérieure de la couronne ;des cales radiales (18) mobiles entre une position en contact avec le noyau et une position escamotée, ces cales étant décalées vers le bas par rapport à la face supérieure de la couronne d'une distance comprise entre une épaisseur de couche et deux épaisseurs de couche ; etdes moyens pour lever la couronne par rapport au noyau de deux épaisseurs de couche.
- Appareil selon la revendication 4, caractérisé en ce que la couronne (12) comporte des plates-formes escamotables (20) associées aux rouleaux (16) pour permettre aux rouleaux de s'abaisser.
- Appareil selon la revendication 4 ou 5, caractérisé en ce qu'il comprend un débiteur de fil pour alimenter les spires en cours de bobinage au niveau de l'un des rouleaux (16), le débiteur étant susceptible d'exercer sélectivement une traction ou une pression axiale sur le fil.
- Appareil selon l'une quelconque des revendications 4 à 6, caractérisé en ce que les rouleaux (16) sont coniques, leur plus grand diamètre étant du côté du noyau.
- Appareil selon l'une quelconque des revendications 4 à 7, caractérisé en ce que les rouleaux (16) sont fixes et l'ensemble de la couronne (12), des cales (18) et du noyau (10) est tournant.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9612414 | 1996-10-08 | ||
FR9612414A FR2754380B1 (fr) | 1996-10-08 | 1996-10-08 | Procede de bobinage de spires en couches radiales |
US08/944,129 US5931405A (en) | 1996-10-08 | 1997-10-06 | Method for achieving windings in radial layers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0836205A1 EP0836205A1 (fr) | 1998-04-15 |
EP0836205B1 true EP0836205B1 (fr) | 2002-02-13 |
Family
ID=26233035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97410112A Expired - Lifetime EP0836205B1 (fr) | 1996-10-08 | 1997-10-08 | Procédé de bobinage de spires en couches radiales |
Country Status (11)
Country | Link |
---|---|
US (1) | US5931405A (fr) |
EP (1) | EP0836205B1 (fr) |
JP (1) | JPH10116747A (fr) |
CN (1) | CN1129152C (fr) |
AU (1) | AU728385B2 (fr) |
BR (1) | BR9704989A (fr) |
CA (1) | CA2217544A1 (fr) |
DE (1) | DE69710406T2 (fr) |
ES (1) | ES2173410T3 (fr) |
FR (1) | FR2754380B1 (fr) |
NO (1) | NO974575L (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5490186B2 (ja) | 2012-05-31 | 2014-05-14 | 株式会社エス・エッチ・ティ | コイルの巻線方法及び変圧器 |
CN112141806A (zh) * | 2020-09-30 | 2020-12-29 | 格力大松(宿迁)生活电器有限公司 | 用于将漆包线缠入绕线盘上的工具 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1813994A (en) * | 1927-11-19 | 1931-07-14 | Westinghouse Electric & Mfg Co | Winding and method of constructing the same |
DE601053C (de) * | 1930-08-14 | 1934-08-07 | Siemens & Halske Akt Ges | Verfahren zum fortlaufenden Wickeln von fuer elektrische Einrichtungen bestimmten Spulen aus Scheibenwicklungen, die wechselweise von innen nach aussen und von aussen nac innen gewickelt werden |
DE1231197B (de) * | 1961-07-25 | 1966-12-29 | Schloemann Ag | Verfahren und Vorrichtung zum Umformen eines, beispielsweise aus einem Kaltwalzwerk kommenden, festgewickelten Bandbundes aus magnetisierbarem Stahlband in ein geoeffnetes Bandbund mit distanzierten Windungen |
DE1239016B (de) * | 1964-04-22 | 1967-04-20 | Licentia Gmbh | Vorrichtung zur Herstellung von Zylinderwicklungen fuer Transformatoren u. dgl. |
US3640112A (en) * | 1969-05-12 | 1972-02-08 | Republic Steel Corp | Coiling method and apparatus |
NL169367C (nl) * | 1970-12-09 | 1982-07-01 | Lode S Instr N V | Werkwijze en inrichting voor het bepalen van de coagulatietijd van bloed. |
US3750719A (en) * | 1971-10-15 | 1973-08-07 | L Goldman | Device for winding continuous winding with interlay sections |
FR2160276B1 (fr) * | 1971-11-17 | 1976-06-04 | Zaporozh Transformator | |
DE2759253A1 (de) * | 1977-12-31 | 1979-07-12 | Bbc Brown Boveri & Cie | Wickelvorrichtung fuer transformatorwicklung |
NL8802882A (nl) * | 1988-11-22 | 1990-06-18 | Smit Transformatoren Bv | Van axiale kanalen voorziene, als schijvenwikkeling uitgevoerde transformatorwikkeling. |
-
1996
- 1996-10-08 FR FR9612414A patent/FR2754380B1/fr not_active Expired - Fee Related
-
1997
- 1997-10-02 JP JP9284300A patent/JPH10116747A/ja not_active Withdrawn
- 1997-10-03 NO NO974575A patent/NO974575L/no not_active Application Discontinuation
- 1997-10-06 US US08/944,129 patent/US5931405A/en not_active Expired - Fee Related
- 1997-10-07 AU AU39956/97A patent/AU728385B2/en not_active Ceased
- 1997-10-07 CA CA002217544A patent/CA2217544A1/fr not_active Abandoned
- 1997-10-08 ES ES97410112T patent/ES2173410T3/es not_active Expired - Lifetime
- 1997-10-08 BR BR9704989A patent/BR9704989A/pt not_active IP Right Cessation
- 1997-10-08 DE DE69710406T patent/DE69710406T2/de not_active Expired - Fee Related
- 1997-10-08 EP EP97410112A patent/EP0836205B1/fr not_active Expired - Lifetime
- 1997-10-08 CN CN97122558A patent/CN1129152C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1182945A (zh) | 1998-05-27 |
NO974575D0 (no) | 1997-10-03 |
AU3995697A (en) | 1998-04-23 |
FR2754380A1 (fr) | 1998-04-10 |
JPH10116747A (ja) | 1998-05-06 |
CA2217544A1 (fr) | 1998-04-08 |
DE69710406T2 (de) | 2002-10-10 |
CN1129152C (zh) | 2003-11-26 |
ES2173410T3 (es) | 2002-10-16 |
DE69710406D1 (de) | 2002-03-21 |
AU728385B2 (en) | 2001-01-11 |
US5931405A (en) | 1999-08-03 |
FR2754380B1 (fr) | 1998-12-18 |
NO974575L (no) | 1998-04-14 |
EP0836205A1 (fr) | 1998-04-15 |
BR9704989A (pt) | 1999-01-19 |
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