JP4369164B2 - Method for manufacturing amorphous iron core transformer - Google Patents

Method for manufacturing amorphous iron core transformer Download PDF

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JP4369164B2
JP4369164B2 JP2003169488A JP2003169488A JP4369164B2 JP 4369164 B2 JP4369164 B2 JP 4369164B2 JP 2003169488 A JP2003169488 A JP 2003169488A JP 2003169488 A JP2003169488 A JP 2003169488A JP 4369164 B2 JP4369164 B2 JP 4369164B2
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iron core
shaped
shaped iron
amorphous
composite
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JP2005005592A (en
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義光 伊藤
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Hitachi Industrial Equipment Systems Co Ltd
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Hitachi Industrial Equipment Systems Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、積層したアモルファス材を鉄心に用いたアモルファス鉄心変圧器に係り、特に鉄心の製造技術に関する。
【０００２】
【従来の技術】
本発明に関連した従来技術としては、例えば、特開２０００−２３２０２５号公報（特許文献１）や特開平７−８６０５２号公報（特許文献２）に記載されたものがある。特開２０００−２３２０２５号公報には、アモルファス素材を水平積みして成るアモルファスブロック材を、Ｕ字形状に変形させる位置に移動させ、該Ｕ字形状に変形させる工程と、アモルファス素材を水平積みしてアモルファスブロック材を形成する工程とを同時並行的に行う構成が記載れている。また、特開平７−８６０５２号公報には、内側鉄心の最外周をステンレス鋼帯等の非磁性材で覆い、内側鉄心を枠として外側鉄心を積層し、該外側鉄心の最内周に該外側鉄心を保護するための珪素鋼帯や容易に変形する厚みの鋼帯やステンレス鋼帯を設けた三相アモルファス三脚鉄心変圧器の構成が記載されている。
【０００３】
【特許文献１】
特開２０００−２３２０２５号公報
【特許文献２】
特開平７−８６０５２号公報
【０００４】
【発明が解決しようとする課題】
上記特開２０００−２３２０２５号公報や記載の技術は、鉄心の切断と、その後の水平積みとを連続的に行う技術であって、内側鉄心と外側鉄心の変形を抑えるための技術ではない。また、特開平７−８６０５２号公報記載の技術は、焼鈍後の鉄心の破損や破片の大量発生を防止するための技術であるため、言及されている技術範囲からみて、鉄心の保護はされても該鉄心の変形を抑えるには不十分であると考えられる。
本発明の課題点は、上記従来技術の状況に鑑み、アモルファス鉄心変圧器において、鉄心の破損や破片の発生を抑えた状態で生産性を向上でき、かつ該鉄心の変形を抑えられるようにすることである。
本発明の目的は、かかる課題点を解決できる技術の提供にある。
【０００５】
【課題を解決するための手段】
上記課題点を解決するために、本発明では、水平積み状態に積層したアモルファス材を変形させてＵ字状鉄心を形成し、励磁用コイルを組み込んだ後環状にするアモルファス鉄心変圧器の製造方法として、巻型を製造装置にセットし、複数のフープ状に巻かれた薄帯状アモルファス材を該製造装置内の複数の支持部より引き出し、互いを重ね合わせ、該重ねられたアモルファス材を所定の長さに切断し、該切断されたアモルファス材を順次テーブル上に水平積みし、上記巻型によりＵ字状に整形し、２個の内側Ｕ字状鉄心を形成する第１のステップと、複数のフープ状に巻かれた薄帯状アモルファス材を該製造装置内の複数の支持部より引き出し、互いを重ね合わせ、該重ねられたアモルファス材を所定の長さに切断し、該切断されたアモルファス材を順次テーブル上に水平積みする第２のステップと、上記第１のステップで形成した２個の内側Ｕ字状鉄心を、該２個の内側Ｕ字状鉄心上に変形防止部材が載った状態で上記製造装置内の所定位置にセットする第３のステップと、上記２個の内側Ｕ字状鉄心上に変形防止部材が載った状態のものを巻型として、上記第２のステップで水平積み状態にした鉄心材をＵ字状に変形させて外側Ｕ字状鉄心を形成し、上記２個の内側Ｕ字状鉄心と該外側Ｕ字状鉄心とが一体状とされかつ両Ｕ字状鉄心間に変形防止部材を有した複合Ｕ字状鉄心を形成する第４のステップと、上記複合Ｕ字状鉄心における上記２個の内側Ｕ字状鉄心と上記外側Ｕ字状鉄心のそれぞれについて、開放端を突き合わせて環状にする第５のステップと、上記複合Ｕ字状鉄心を焼鈍する第６のステップと、上記突き合わせ状態を解いて上記複合Ｕ字状鉄心に励磁用コイルを組み込む第７のステップと、上記複合Ｕ字状鉄心内の上記２個の内側Ｕ字状鉄心と上記外側Ｕ字状鉄心のそれぞれの開放端を互いに突き合わせて結合し環状の磁気回路を形成する第８のステップと、を経て、アモルファス鉄心変圧器を製造する。
【０００６】
【発明の実施の形態】
以下、本発明の実施例につき、図面を用いて説明する。
図１〜図５は、本発明の実施例の説明図である。図１は、本発明の実施例のアモルファス鉄心変圧器に用いる鉄心の複合Ｕ字状鉄心状態の説明図、図２は、図１の複合Ｕ字状鉄心の製造手順の説明図、図３は、内側Ｕ字状鉄心の整形の説明図、図４は、図１の複合Ｕ字状鉄心の製造装置の構成例図、図５は、本発明の実施例のアモルファス鉄心変圧器に用いる鉄心の製造手順の説明図である。
【０００７】
図１において、１は複合Ｕ字状鉄心、２は、積層したアモルファス材から成る外側Ｕ字状鉄心、３、５は、同じく積層したアモルファス材から成る内側Ｕ字状鉄心、４、６は巻型、７は、内側鉄心３、５と外側鉄心２のいずれか一方の変形または両方の変形を抑えるための変形防止部材である。変形防止部材７は変形しにくい板状部材などで構成される。本構成は３相３脚のアモルファス鉄心の例である。複合Ｕ字状鉄心１は、２個の内側Ｕ字状鉄心３、５と、該２個の内側Ｕ字状鉄心３、５を囲み該該２個の内側Ｕ字状鉄心３、５の外側に設けられる１個の外側Ｕ字状鉄心２とから構成さる。該２個の内側Ｕ字状鉄心３、５はそれぞれ、巻型４、６によりＵ字状に整形され、また、外側Ｕ字状鉄心２は、該２個の内側Ｕ字状鉄心３、５を巻型としてＵ字状に整形される。変形防止部材７は、外側Ｕ字状鉄心２のＵ字状整形に先立ち予め、該２個の内側Ｕ字状鉄心３、５の底辺部の外側に配しておいてもよいし、または、該外側Ｕ字状鉄心２のＵ字状整形の後に、該外側Ｕ字状鉄心２と上記２個の内側Ｕ字状鉄心３、５との間に設けるようにしてもよい。
【０００８】
図２は、図１の複合Ｕ字状鉄心１の製造手順の説明図である。
図２において、２'は、Ｕ字状整形前の水平積み状態の外側鉄心材、７は、上記図１で説明した変形防止部材、８は、変形防止部材７を載置する載置用部材、５０ａ、５０ｂは、外側鉄心材２'を載置する伸縮テーブルである。上記図１と同じ他の要素には、図１の場合と同じ符号を付す。
製造手順は、以下のようになる。すなわち、
（１）巻型４、６によりＵ字状に整形された２個の内側Ｕ字状鉄心３、５が互いに並列的に結合された後、伸縮テーブル５０ａ、５０ｂの下部の所定位置に移動される。
（２）２個の内側Ｕ字状鉄心３、５を上昇させるとともに、載置用部材８を伸縮テーブル５０ａ、５０ｂの位置から引き抜く。
（３）２個の内側Ｕ字状鉄心３、５上に変形防止部材７が載った状態のものを巻型として、外側鉄心材２'をＵ字状に整形して外側Ｕ字状鉄心とし、該外側Ｕ字状鉄心と２個の内側Ｕ字状鉄心３、５とから成る複合Ｕ字状鉄心１（図１）を形成する。
【０００９】
図３は、内側Ｕ字状鉄心の整形の説明図である。
図３において、３'は、Ｕ字状整形前の水平積み状態の内側鉄心材、１０は引出し用部材である。アモルファス材はフープ状に巻かれた素材を解いて取り出しながら所定の長さに切断し、該切断したものを上記引出し用部材１０で順次引出して水平積みし、水平積み状態の内側鉄心材３'とする。次に、該内側鉄心材３'に対して巻型４を上昇させ、該内側鉄心材３'をＵ字状に変形させ内側Ｕ字状鉄心３を形成する。内側Ｕ字状鉄心５についても同様である。
【００１０】
図４は、図１の複合Ｕ字状鉄心１を製造する製造装置の構成例図である。
図４において、２０は、フープ状に巻かれたアモルファス材を支持する支持部、３０は、アモルファス材を所定の長さに切断する切断部、５０ａ、５０ｂは伸縮テーブル、４０は巻型、７０は装置操作を行うための操作盤である。本例の製造装置では内側Ｕ字状鉄心３、５（図１）を製造した後、該内側Ｕ字状鉄心３、５を用いて外側Ｕ字状鉄心２（図１）をＵ字状に整形し、該内側Ｕ字状鉄心３、５と該外側Ｕ字状鉄心２とを一体状にした複合Ｕ字状鉄心１（図１）を製造する。内側Ｕ字状鉄心３、５の製造時は、複数のフープ状に巻かれた薄帯状のアモルファス材が、複数の支持部２０から引出され、互いに重ねられ、切断部３０で所定の長さに切断される。該切断されたものは伸縮テーブル５０ａ、５０ｂ上に水平積みされる。所定の水平積み状態となると、巻型４０が移動して該水平積み状態の鉄心材をＵ字状に変形させる。これによって、内側Ｕ字状鉄心３または内側Ｕ字状鉄心５が形成される。また、外側Ｕ字状鉄心２の整形による複合Ｕ字状鉄心１の製造時は、複数のフープ状に巻かれた薄帯状のアモルファス材が、複数の支持部２０から引出され、互いに重ねられ、切断部３０で所定の長さに切断される。該切断されたものは伸縮テーブル５０ａ、５０ｂ上に水平積みされる。所定の水平積み状態となると、内側Ｕ字状鉄心３、５上に変形防止部材７が載った状態のものを巻型として移動させ、該水平積み状態の鉄心材をＵ字状に変形させる。これによって、該内側Ｕ字状鉄心３、５と該外側Ｕ字状鉄心２とが一体状とされかつ変形防止部材７を両者間に有した複合Ｕ字状鉄心１が形成される。
【００１１】
図５は、本発明の実施例としてのアモルファス鉄心変圧器に用いる鉄心の製造手順の説明図である。なお、説明中で構成要素の符号には、上記図１、図２で用いた符号と同じものを用いるとする。
図５において、
（１）巻型を製造装置にセットする（ステップＳ５０１）。
（２）複数のフープ状に巻かれた薄帯状のアモルファス素材を、製造装置内の複数の支持部から引出す（ステップＳ５０２）。
（３）上記引出されかつ重ねられたアモルファス材を、所定の長さに切断する（ステップＳ５０３）。
（４）切断されたものを順次所定位置に搬送し、水平積みする（ステップＳ５０４、ステップＳ５０５）。
（５）水平積み量が１脚分あるか否かを判別する（ステップＳ５０６）。
（６）水平積み量が１脚分の所定量に満たない場合は、上記ステップＳ５０２〜ステップＳ５０５を再び繰返す。
（７）ステップＳ５０６で、上記水平積み量が１脚分の所定量に達している場合は、該水平積みされた鉄心材を上記セットした巻型によりＵ字状に変形させ、内側Ｕ字状鉄心３、５を形成する（ステップＳ５０７）。
（８）次に、製造装置を、複合Ｕ字状鉄心１の整形対応に切替える（ステップＳ５０８）。
【００１２】
（９）上記ステップＳ５０２〜ステップＳ５０５を再び繰返す（ステップＳ５０９）。ただし、少なくとも、上記ステップＳ５０３における切断では、アモルファス材を外側Ｕ字状鉄心２に対応する長さに切断し、上記ステップＳ５０５における水平積みでは、アモルファス材を外側Ｕ字状鉄心２に対応する量になるまで水平積みする。
（１０）上記整形済みの内側Ｕ字状鉄心３、５を、装置内の所定位置にセットする（ステップＳ５１０）。
（１１）変形防止部材７を所定位置にセットする（ステップＳ５１１）。
（１２）上記内側Ｕ字状鉄心３、５及び上記変形防止部材７を巻型として（巻型の代わりとして）、上記水平積み状態の鉄心材をＵ字状に変形させて外側Ｕ字状鉄心２とし、該外側Ｕ字状鉄心２と内側Ｕ字状鉄心３、５とが一体状とされかつ変形防止部材７を両者間に有した複合Ｕ字状鉄心１が形成する（ステップＳ５１２）。
（１３）複合Ｕ字状鉄心１内の内側Ｕ字状鉄心３、５と外側Ｕ字状鉄心２のそれぞれの開放端を突き合わせて環状とし（ラップ状態とし）、焼鈍処理を行う（ステップＳ５１３）。
（１４）上記ラップ状態を解いて励磁用コイルを挿入する（ステップＳ５１４）。
（１５）複合Ｕ字状鉄心１内の内側Ｕ字状鉄心３、５と外側Ｕ字状鉄心２のそれぞれの開放端を再び突き合わせて環状とし（ラップ状態とし）、コイル端末の接続等の配線を行う（ステップＳ５１５）。
【００１３】
上記実施例によれば、アモルファス鉄心変圧器において、内側Ｕ字状鉄心３、５を巻型として外側Ｕ字状鉄心２を整形し、そのまま複合Ｕ字状鉄心１として一体状の構成にできるため、鉄心の生産性を向上できる。また、変形防止部材７により、鉄心の重力に起因した変形などを抑えられ、特性劣化も防止できる。
【００１４】
なお、上記実施例は３相３脚型のアモルファス鉄心変圧器につき述べたが、本発明はこれには限定されず、他の形式の変圧器であってもよい。また、変形防止部材７は板状のものに限定されないし、外側Ｕ字状鉄心２と内側Ｕ字状鉄心３、５との間に配するタイミングも、外側Ｕ字状鉄心２の整形後としてもよい。
【００１５】
【発明の効果】
本発明によれば、アモルファス鉄心変圧器において、鉄心の生産性を向上できる。また、鉄心の特性劣化も防止できる。
【図面の簡単な説明】
【図１】本発明の実施例のアモルファス鉄心変圧器に用いる鉄心の複合Ｕ字状鉄心状態の説明図である。
【図２】図１の複合Ｕ字状鉄心の製造手順の説明図である。
【図３】内側Ｕ字状鉄心の整形の説明図である。
【図４】図１の複合Ｕ字状鉄心の製造装置の構成例図である。
【図５】本発明の実施例のアモルファス鉄心変圧器に用いる鉄心の製造手順の説明図である。
【符号の説明】
１…複合Ｕ字状鉄心、 ２…外側Ｕ字状鉄心、 ２'…水平積み状態の外側鉄心材、 ３、５…内側Ｕ字状鉄心、 ４、６、４０…巻型、 ７…変形防止部材、 ８…載置用部材、 ２０…支持部、 ３０…切断部、 ５０ａ、５０ｂ…伸縮テーブル、 ７０…操作盤。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an amorphous core transformer in which laminated amorphous materials are used for an iron core, and more particularly to a technique for manufacturing an iron core.
[0002]
[Prior art]
Examples of conventional techniques related to the present invention include those described in Japanese Patent Application Laid-Open No. 2000-232025 (Patent Document 1) and Japanese Patent Application Laid-Open No. 7-86052 (Patent Document 2). In Japanese Patent Laid-Open No. 2000-232025, an amorphous block material formed by horizontally stacking amorphous materials is moved to a position where the amorphous block material is deformed into a U shape and deformed into the U shape, and the amorphous material is horizontally stacked. In other words, a configuration is described in which the step of forming an amorphous block material is performed in parallel. Japanese Patent Laid-Open No. 7-86052 discloses that the outermost periphery of the inner iron core is covered with a nonmagnetic material such as a stainless steel strip, the outer iron core is laminated with the inner iron core as a frame, and the outermost iron The configuration of a three-phase amorphous tripod core transformer provided with a silicon steel strip for protecting the iron core, a steel strip with a thickness that easily deforms, and a stainless steel strip is described.
[0003]
[Patent Document 1]
JP 2000-232025 A [Patent Document 2]
Japanese Patent Laid-Open No. 7-86052
[Problems to be solved by the invention]
The technology described in the above Japanese Patent Laid-Open No. 2000-232025 is a technology for continuously cutting the iron core and the subsequent horizontal stacking, and is not a technology for suppressing deformation of the inner iron core and the outer iron core. In addition, the technique described in Japanese Patent Laid-Open No. 7-86052 is a technique for preventing breakage of the iron core after annealing and generation of a large amount of debris. Therefore, in view of the mentioned technical scope, the iron core is protected. However, it is considered that the deformation of the iron core is insufficient.
In view of the above-described prior art, the problem of the present invention is that in an amorphous iron core transformer, productivity can be improved in a state in which damage to the iron core and generation of fragments are suppressed, and deformation of the iron core can be suppressed. That is.
An object of the present invention is to provide a technique capable of solving such problems.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the present invention, a method for manufacturing an amorphous iron core transformer in which an amorphous material laminated in a horizontally stacked state is deformed to form a U-shaped iron core and an annular coil is formed after incorporating an exciting coil. As described above, a winding mold is set in a manufacturing apparatus, and a plurality of hoop-shaped thin ribbon-shaped amorphous materials are pulled out from a plurality of support portions in the manufacturing apparatus, and are overlapped with each other. A first step of cutting into lengths, sequentially stacking the cut amorphous materials on a table, shaping them into a U shape by the above-mentioned winding mold, and forming two inner U-shaped iron cores; A thin ribbon-shaped amorphous material wound in the shape of a hoop is pulled out from a plurality of support portions in the manufacturing apparatus, overlapped with each other, the stacked amorphous material is cut into a predetermined length, and the cut amorphous material A second step of sequentially stacking the glass materials on the table and the two inner U-shaped iron cores formed in the first step are provided with a deformation preventing member on the two inner U-shaped iron cores. A third step of setting the product at a predetermined position in the manufacturing apparatus in a mounted state, and a second step in which the deformation preventing member is mounted on the two inner U-shaped iron cores as a winding mold The iron core material horizontally stacked in the above is deformed into a U shape to form an outer U-shaped iron core, and the two inner U-shaped iron cores and the outer U-shaped iron core are integrated and both U A fourth step of forming a composite U-shaped core having a deformation preventing member between the U-shaped cores, and each of the two inner U-shaped cores and the outer U-shaped core in the composite U-shaped core. About the fifth step of making the open end abutted to make an annular shape, and the above composite U-shape A sixth step of annealing the core, a seventh step of unwinding the butted state and incorporating an exciting coil into the composite U-shaped iron core, and the two inner U-shapes in the composite U-shaped core. An amorphous iron core transformer is manufactured through an eighth step in which the open ends of the iron core and the outer U-shaped iron core are butted together to form an annular magnetic circuit .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1-5 is explanatory drawing of the Example of this invention. 1 is an explanatory diagram of a composite U-shaped core state of an iron core used in an amorphous iron core transformer according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of a manufacturing procedure of the composite U-shaped iron core of FIG. 1, and FIG. FIG. 4 is an explanatory diagram of the shaping of the inner U-shaped iron core, FIG. 4 is a configuration example diagram of the composite U-shaped iron core manufacturing apparatus of FIG. 1, and FIG. 5 is a diagram of the iron core used in the amorphous core transformer of the embodiment of the present invention. It is explanatory drawing of a manufacturing procedure.
[0007]
In FIG. 1, 1 is a composite U-shaped iron core, 2 is an outer U-shaped iron core made of laminated amorphous material, 3 and 5 are inner U-shaped iron cores made of laminated amorphous material, and 4 and 6 are wound. The mold 7 is a deformation preventing member for suppressing deformation of one or both of the inner iron cores 3 and 5 and the outer iron core 2. The deformation preventing member 7 is composed of a plate-like member that is not easily deformed. This configuration is an example of a three-phase three-legged amorphous iron core. The composite U-shaped iron core 1 surrounds the two inner U-shaped iron cores 3, 5, and surrounds the two inner U-shaped iron cores 3, 5. It is comprised from the one outer side U-shaped iron core 2 provided in this. The two inner U-shaped iron cores 3 and 5 are shaped into a U shape by the winding dies 4 and 6, respectively, and the outer U-shaped iron core 2 is formed of the two inner U-shaped iron cores 3 and 5. Is shaped into a U shape with a winding shape. Prior to the U-shaped shaping of the outer U-shaped iron core 2, the deformation preventing member 7 may be arranged on the outer side of the bottom side of the two inner U-shaped iron cores 3, 5, or After the U-shaped shaping of the outer U-shaped iron core 2, it may be provided between the outer U-shaped iron core 2 and the two inner U-shaped iron cores 3 and 5.
[0008]
FIG. 2 is an explanatory diagram of the manufacturing procedure of the composite U-shaped iron core 1 of FIG.
In FIG. 2, 2 ′ is an outer core material in a horizontally stacked state before U-shaped shaping, 7 is a deformation preventing member described in FIG. 1, and 8 is a mounting member on which the deformation preventing member 7 is placed. , 50a, 50b are telescopic tables on which the outer core material 2 ′ is placed. The same elements as those in FIG. 1 are denoted by the same reference numerals as those in FIG.
The manufacturing procedure is as follows. That is,
(1) moved by the former 4, 6 after the two inner U-shaped cores 3 and 5 is shaped in a U-shape is parallel coupled to each other, stretching tables 50a, at a predetermined position in the lower portion of the 50b Is done.
(2) The two inner U-shaped iron cores 3 and 5 are raised, and the mounting member 8 is pulled out from the positions of the extendable tables 50a and 50b.
(3) The outer U-shaped iron core 3 'is shaped into a U-shape by forming the deformation prevention member 7 on the two inner U-shaped iron cores 3 and 5 and forming the outer U-shaped iron core. A composite U-shaped iron core 1 (FIG. 1) composed of the outer U-shaped iron core and the two inner U-shaped iron cores 3 and 5 is formed.
[0009]
FIG. 3 is an explanatory diagram of the shaping of the inner U-shaped iron core.
In FIG. 3, 3 'is an inner core material in a horizontally stacked state before U-shaped shaping, and 10 is a drawing member. The amorphous material is cut into a predetermined length while unwinding and taking out the material wound in a hoop shape, and the cut pieces are sequentially drawn out by the drawing member 10 and horizontally stacked. And Next, the winding mold 4 is raised with respect to the inner iron core material 3 ′, and the inner iron core material 3 ′ is deformed into a U shape to form the inner U-shaped iron core 3. The same applies to the inner U-shaped iron core 5.
[0010]
FIG. 4 is a configuration example diagram of a manufacturing apparatus for manufacturing the composite U-shaped iron core 1 of FIG.
In FIG. 4, 20 is a support part for supporting the amorphous material wound in a hoop shape, 30 is a cutting part for cutting the amorphous material into a predetermined length, 50a and 50b are telescopic tables, 40 is a winding mold, 70 Is an operation panel for operating the apparatus. In the manufacturing apparatus of this example, after the inner U-shaped iron cores 3 and 5 (FIG. 1) are manufactured, the outer U-shaped iron core 2 (FIG. 1) is formed into a U shape using the inner U-shaped iron cores 3 and 5. The composite U-shaped iron core 1 (FIG. 1) in which the inner U-shaped iron cores 3 and 5 and the outer U-shaped iron core 2 are integrated is manufactured. At the time of manufacturing the inner U-shaped iron cores 3, 5, strip-shaped amorphous materials wound in a plurality of hoops are drawn out from the plurality of support parts 20, overlapped with each other, and cut into a predetermined length by the cutting part 30. Disconnected. The cut pieces are horizontally stacked on the telescopic tables 50a and 50b. When a predetermined horizontal stacked state is reached, the winding mold 40 moves and deforms the horizontally stacked iron core material into a U shape. Thereby, the inner U-shaped iron core 3 or the inner U-shaped iron core 5 is formed. Further, when manufacturing the composite U-shaped core 1 by shaping the outer U-shaped core 2, the strip-shaped amorphous material wound in a plurality of hoops is drawn out from the plurality of support portions 20 and overlapped with each other, It is cut into a predetermined length by the cutting unit 30. The cut pieces are horizontally stacked on the telescopic tables 50a and 50b. When a predetermined horizontal stacked state is reached, the state in which the deformation preventing member 7 is placed on the inner U-shaped iron cores 3 and 5 is moved as a winding mold, and the horizontally stacked iron core material is deformed into a U shape. Thereby, the inner U-shaped iron cores 3 and 5 and the outer U-shaped iron core 2 are integrated, and the composite U-shaped iron core 1 having the deformation preventing member 7 therebetween is formed.
[0011]
FIG. 5 is an explanatory diagram of a manufacturing procedure of an iron core used for an amorphous iron core transformer as an embodiment of the present invention. In the description, the same reference numerals as those used in FIGS. 1 and 2 are used for the constituent elements.
In FIG.
(1) The winding mold is set in the manufacturing apparatus (step S501).
(2) The thin strip-shaped amorphous material wound in the shape of a plurality of hoops is pulled out from the plurality of support portions in the manufacturing apparatus (step S502).
(3) The drawn and stacked amorphous material is cut into a predetermined length (step S503).
(4) The cut pieces are sequentially conveyed to a predetermined position and stacked horizontally (steps S504 and S505).
(5) It is determined whether or not there is one horizontal stacking amount (step S506).
(6) When the horizontal stacking amount is less than the predetermined amount for one leg, the above steps S502 to S505 are repeated again.
(7) If the horizontal stacking amount has reached a predetermined amount for one leg in step S506, the horizontally stacked iron core material is deformed into a U-shape by the set winding form, and the inner U-shaped The iron cores 3 and 5 are formed (step S507).
(8) Next, the manufacturing apparatus is switched to support shaping of the composite U-shaped iron core 1 (step S508).
[0012]
(9) The above steps S502 to S505 are repeated again (step S509). However, at least in the cutting in step S503, the amorphous material is cut to a length corresponding to the outer U-shaped iron core 2, and in the horizontal stacking in step S505, the amount corresponding to the outer U-shaped iron core 2 is cut. Stack horizontally until
(10) The shaped inner U-shaped iron cores 3 and 5 are set at predetermined positions in the apparatus (step S510).
(11) The deformation preventing member 7 is set at a predetermined position (step S511).
(12) Using the inner U-shaped iron cores 3 and 5 and the deformation preventing member 7 as a winding mold (in place of the winding mold), the horizontally stacked iron core material is deformed into a U-shape to form an outer U-shaped iron core. 2, the outer U-shaped iron core 2 and the inner U-shaped iron cores 3, 5 are integrated, and the composite U-shaped iron core 1 having the deformation preventing member 7 therebetween is formed (step S 512).
(13) The open ends of the inner U-shaped iron cores 3 and 5 and the outer U-shaped iron core 2 in the composite U-shaped iron core 1 are brought into contact with each other to form an annular shape (wrapped state), and an annealing process is performed (step S513). .
(14) The exciting state is inserted and the exciting coil is inserted (step S514).
(15) The open ends of the inner U-shaped iron cores 3 and 5 and the outer U-shaped iron core 2 in the composite U-shaped iron core 1 are again brought into contact with each other to form an annular shape (wrapped state), and wiring for connecting coil terminals, etc. Is performed (step S515).
[0013]
According to the above-described embodiment, in the amorphous iron core transformer, the inner U-shaped iron cores 3 and 5 can be used as the winding shape, the outer U-shaped iron core 2 can be shaped, and the combined U-shaped iron core 1 can be integrated as it is. Can improve the productivity of the iron core. Further, the deformation preventing member 7 can suppress deformation caused by the gravity of the iron core, and can prevent deterioration of characteristics.
[0014]
In addition, although the said Example described the three-phase three-leg type amorphous iron core transformer, this invention is not limited to this, The transformer of another type may be sufficient. Further, the deformation preventing member 7 is not limited to a plate-shaped member, and the timing of arranging the deformation preventing member 7 between the outer U-shaped iron core 2 and the inner U-shaped iron cores 3 and 5 is also after the outer U-shaped iron core 2 is shaped. Also good.
[0015]
【The invention's effect】
According to the present invention, productivity of an iron core can be improved in an amorphous iron core transformer. In addition, deterioration of the iron core characteristics can be prevented.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a composite U-shaped iron core state of an iron core used in an amorphous iron core transformer according to an embodiment of the present invention.
2 is an explanatory diagram of a manufacturing procedure of the composite U-shaped iron core of FIG. 1. FIG.
FIG. 3 is an explanatory diagram of shaping of the inner U-shaped iron core.
4 is a configuration example diagram of a manufacturing apparatus for the composite U-shaped iron core of FIG. 1; FIG.
FIG. 5 is an explanatory diagram of a manufacturing procedure of an iron core used in an amorphous iron core transformer according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Composite U-shaped iron core, 2 ... Outer U-shaped iron core, 2 '... Outer core material of horizontal stacking state 3, 5, ... Inner U-shaped iron core, 4, 6, 40 ... Winding type, 7 ... Prevention of deformation Member, 8 ... mounting member, 20 ... support part, 30 ... cutting part, 50a, 50b ... telescopic table, 70 ... operation panel.

Claims (1)

水平積み状態に積層したアモルファス材を変形させてＵ字状鉄心を形成し、励磁用コイルを組み込んだ後環状にするアモルファス鉄心変圧器の製造方法であって、
巻型を製造装置にセットし、複数のフープ状に巻かれた薄帯状アモルファス材を該製造装置内の複数の支持部より引き出し、互いを重ね合わせ、該重ねられたアモルファス材を所定の長さに切断し、該切断されたアモルファス材を順次テーブル上に水平積みし、上記巻型によりＵ字状に整形し、２個の内側Ｕ字状鉄心を形成する第１のステップと、
複数のフープ状に巻かれた薄帯状アモルファス材を該製造装置内の複数の支持部より引き出し、互いを重ね合わせ、該重ねられたアモルファス材を所定の長さに切断し、該切断されたアモルファス材を順次テーブル上に水平積みする第２のステップと、
上記第１のステップで形成した２個の内側Ｕ字状鉄心を、該２個の内側Ｕ字状鉄心上に変形防止部材が載った状態で上記製造装置内の所定位置にセットする第３のステップと、
上記２個の内側Ｕ字状鉄心上に変形防止部材が載った状態のものを巻型として、上記第２のステップで水平積み状態にした鉄心材をＵ字状に変形させて外側Ｕ字状鉄心を形成し、上記２個の内側Ｕ字状鉄心と該外側Ｕ字状鉄心とが一体状とされかつ両Ｕ字状鉄心間に変形防止部材を有した複合Ｕ字状鉄心を形成する第４のステップと、
上記複合Ｕ字状鉄心における上記２個の内側Ｕ字状鉄心と上記外側Ｕ字状鉄心のそれぞれについて、開放端を突き合わせて環状にする第５のステップと、
上記複合Ｕ字状鉄心を焼鈍する第６のステップと、
上記突き合わせ状態を解いて上記複合Ｕ字状鉄心に励磁用コイルを組み込む第７のステップと、
上記複合Ｕ字状鉄心内の上記２個の内側Ｕ字状鉄心と上記外側Ｕ字状鉄心のそれぞれの開放端を互いに突き合わせて結合し環状の磁気回路を形成する第８のステップと、
を経て、アモルファス鉄心変圧器を製造することを特徴とするアモルファス鉄心変圧器の製造方法。 A method of manufacturing an amorphous iron core transformer in which an amorphous material laminated in a horizontally stacked state is deformed to form a U-shaped iron core, and an excitation coil is incorporated into an annular shape ,
A winding mold is set in a manufacturing apparatus, and a plurality of hoop-shaped thin ribbon-shaped amorphous materials are pulled out from a plurality of support parts in the manufacturing apparatus, overlapped with each other, and the stacked amorphous materials have a predetermined length. A first step of forming the two inner U-shaped iron cores by horizontally stacking the cut amorphous materials on a table and shaping them into a U-shape by the above winding mold ;
A thin ribbon-shaped amorphous material wound in a plurality of hoops is pulled out from a plurality of support portions in the manufacturing apparatus, overlapped with each other, the stacked amorphous material is cut into a predetermined length, and the cut amorphous material A second step of horizontally stacking the materials sequentially on the table;
The third inner U-shaped iron core formed in the first step is set at a predetermined position in the manufacturing apparatus with the deformation preventing member placed on the two inner U-shaped iron cores. Steps ,
Using the two inner U-shaped iron cores on which the deformation preventing member is placed as a winding form, the iron core material horizontally stacked in the second step is deformed into a U-shape to form an outer U-shape. A first iron core is formed, and the two inner U-shaped iron cores and the outer U-shaped iron core are integrated, and a composite U-shaped iron core having a deformation preventing member between the two U-shaped iron cores is formed. 4 steps,
For each of the two inner U-shaped iron cores and the outer U-shaped iron core in the composite U-shaped iron core, a fifth step in which the open ends are butted to make an annular shape;
A sixth step of annealing the composite U-shaped iron core;
A seventh step of solving the butted state and incorporating an exciting coil in the composite U-shaped iron core;
An eighth step in which the open ends of the two inner U-shaped cores and the outer U-shaped core in the composite U-shaped core are brought into contact with each other to form an annular magnetic circuit;
A process for producing an amorphous iron core transformer, characterized in that an amorphous iron core transformer is produced through
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