JPH0239404A - Manufacture of transformer iron core - Google Patents
Manufacture of transformer iron coreInfo
- Publication number
- JPH0239404A JPH0239404A JP63189070A JP18907088A JPH0239404A JP H0239404 A JPH0239404 A JP H0239404A JP 63189070 A JP63189070 A JP 63189070A JP 18907088 A JP18907088 A JP 18907088A JP H0239404 A JPH0239404 A JP H0239404A
- Authority
- JP
- Japan
- Prior art keywords
- core
- tightening
- legs
- laminated
- laminated core
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 36
- 238000010030 laminating Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 112
- 229910052742 iron Inorganic materials 0.000 description 9
- 229910000976 Electrical steel Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 241000258241 Mantis Species 0.000 description 1
- MMOXZBCLCQITDF-UHFFFAOYSA-N N,N-diethyl-m-toluamide Chemical compound CCN(CC)C(=O)C1=CC=CC(C)=C1 MMOXZBCLCQITDF-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000035936 sexual power Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はアモルファス磁性材料（以下、非晶質磁性薄帯
）を用いた変圧器鉄心の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a transformer core using an amorphous magnetic material (hereinafter referred to as amorphous magnetic ribbon).
〔従来の技術］
近年、変圧器等の゛静止形電気機器に使用する鉄心は、
従来のけい素鋼帯で構成したものに代えて、優れた低…
失特性を備えたアモルファス磁性材料（以下、非晶質磁
性薄帯という）が開発され、変圧器やりアクドル等静止
形電気機器用の巻鉄心や積層鉄心の鉄心材料としてその
実用化が現在進められている。この非晶質磁性薄帯は鉄
ｌ員と励磁電流が非常に小さく、特に、鉄損は現用の最
高級のけい素鋼帯を用いた場合に比べ１７２〜１ハと低
減でき、これを例えば、電力用変圧器の鉄心に用いた場
合、優れた省エネルギー効果が期待できる。[Prior art] In recent years, iron cores used in stationary electrical equipment such as transformers,
Instead of the conventional silicon steel strip, it has an excellent low…
An amorphous magnetic material (hereinafter referred to as amorphous magnetic ribbon) with a loss-of-loss property has been developed, and its practical use is currently underway as core material for wound cores and laminated cores for stationary electrical equipment such as transformers and stirrups. ing. This amorphous magnetic ribbon has a very small iron member and excitation current, and in particular, the iron loss can be reduced to 172 to 1 H compared to the case of using the highest grade silicon steel strip in use, for example. When used in the iron core of power transformers, excellent energy-saving effects can be expected.
しかし、非晶質磁性薄帯は超急冷、超高速にて製造する
関係上、この製造上の制限を受けて、現状ではその板厚
が約２０〜３０μｍと極端に薄く、かつ、剛性が小さい
、その上、硬くて脆弱な性質を備えている。従って、こ
のような非晶ｆＩ性薄帯を用いて積層鉄心を製造する場
合、前記磁性薄帯自体が極薄であるため、切断、積層作
業等が非常に困難であった。このため、現在非晶質磁性
薄帯を鉄心材料として使用する場合は、大部分が配電用
小形変圧器の巻鉄心に採用するための開発が鋭意進めら
れている。However, because amorphous magnetic ribbons are produced by ultra-quenching and ultra-high speeds, due to manufacturing limitations, currently the plate thickness is extremely thin at approximately 20 to 30 μm, and the rigidity is low. , Moreover, it has a hard and brittle nature. Therefore, when manufacturing a laminated core using such an amorphous fI ribbon, cutting, laminating operations, etc. are extremely difficult because the magnetic ribbon itself is extremely thin. For this reason, currently, when amorphous magnetic ribbons are used as core materials, most of them are being actively developed for use in wound cores of small power distribution transformers.
しかし、最近、あらかじめ非晶質磁性薄帯を複数枚積層
し、これを加熱接着した鉄心材料（板厚・約０．１３鴎
、以下単に磁性帯という）が、積層鉄心用として市販さ
れている。この磁性帯はその製造工程中において既に焼
鈍処理が行われているので、鉄心材料としての使用に際
しては、熱処理を行う必要がないので至便である。この
磁性帯は、例えば、米国・アライド・シグナル社から販
売されている“パワーコア゛′ （商品名）が一般によ
く知られており、積層鉄心に使用するための研究開発が
進められている。However, recently, an iron core material made by laminating multiple amorphous magnetic ribbons in advance and heat-bonding them (plate thickness: approximately 0.13 mm, hereinafter simply referred to as magnetic strips) has been commercially available for use in laminated iron cores. . Since this magnetic band has already been annealed during the manufacturing process, it is convenient because there is no need to perform heat treatment when using it as an iron core material. This magnetic band is generally well known as "Power Core" (trade name) sold by Allied Signal Co., Ltd. of the United States, and research and development for its use in laminated iron cores is underway.
しかるに、前記磁性帯を所定の長さ寸法に切断した単板
を積重ねて積層鉄心を構成した場合、次のような問題点
があった。However, when a laminated core is constructed by stacking veneers obtained by cutting the magnetic strip to a predetermined length dimension, the following problems occur.
（１） 磁性帯は、複数枚の非晶質磁性薄帯を加熱接
着により形成したにもかかわらず、その板厚はけい素鋼
帯に比べ約１７２ と薄く、しかも、表面はその製法上
粗く（凹凸がある）なっているので、占積率が非常に悪
く、所定枚数の磁性帯を単に積層しただけでは、例えば
、第３図の鉄心脚１１において実線で示すように、設計
上定めた所定の積厚りに対し、２点鎖線で示す部分だけ
積厚が増加し、積層時点での積厚はｔ′になってしまい
鉄心脚１１をｔ’ −を分の積厚寸法だけ圧縮する必要
が生じる。しかし、磁性帯はけい素鋼帯に比べ応力又は
歪みに対して非常に敏感であり、前記けい素鋼帯と同様
の締付手段で積層鉄心を製造すると、磁性帯が持つ優れ
た鉄心特性を損なうおそれがあった。(1) Although the magnetic strip is formed from multiple amorphous magnetic thin strips by heat bonding, the thickness of the strip is approximately 172 mm thinner than that of a silicon steel strip, and the surface is rough due to the manufacturing method. (There are irregularities), so the space factor is very poor, and simply stacking a predetermined number of magnetic strips will not work, for example, as shown by the solid line in the iron core leg 11 in Figure 3, the space factor is very poor. For a predetermined stacking thickness, the stacking thickness increases by the portion shown by the two-dot chain line, and the stacking thickness at the time of stacking becomes t', and the core leg 11 is compressed by the stacking thickness dimension of t' -. The need arises. However, the magnetic strip is much more sensitive to stress or strain than the silicon steel strip, and if the laminated core is manufactured using the same tightening method as the silicon steel strip, the excellent core properties of the magnetic strip will be lost. There was a risk of damage.
即ち、積層鉄心の締付面圧と鉄損との関係は第８図に示
す実験例の線図で明らかなように、締付面圧がＯの場合
、鉄損Ｘは約０．３Ｗである。これを同図に示す倍数Ｙ
に置き換えると、鉄損は約１．０倍である。ここで、前
記のように締付面圧が０の積層鉄心を構成した場合、磁
性帯の特長をほぼ１００％満足させることができる鉄ｉ
貝の小さい変圧器を理論的に得られることが考えられる
。In other words, the relationship between the clamping surface pressure and iron loss of the laminated core is as shown in the diagram of the experimental example shown in Figure 8, when the clamping surface pressure is O, the iron loss X is approximately 0.3W. be. This is shown in the figure as a multiple Y
, the iron loss is approximately 1.0 times. Here, if a laminated core with a clamping surface pressure of 0 is constructed as described above, iron i that can satisfy almost 100% of the characteristics of the magnetic band.
It is conceivable that a transformer with a small shell can be theoretically obtained.
しかし、このような積層鉄心を製造しようとした場合、
磁性帯の単板を積層して鉄心脚を形成したとしても、こ
の鉄心脚自体には締付力が全く加えられていないので、
継鉄用の磁性帯を挿入して積層鉄心を組立ようとしても
、前記鉄心脚が継鉄用の磁性帯を挿入する都度、その前
後、あるいは左右方向にずれてしまい、継鉄の組立が全
く行えず、即ち、鉄心脚として実用に供することが全く
できず、積層鉄心の構成が不能となる。このため、前記
鉄心脚を使用できるようにするには、鉄心脚自体をある
程度の圧力で締付けて鉄心としての剛性を高める必要が
あった。However, when trying to manufacture such a laminated core,
Even if a core leg is formed by laminating magnetic strip veneers, no tightening force is applied to the core leg itself, so
Even if you try to assemble a laminated core by inserting a magnetic band for a yoke, the core legs will shift back and forth or left and right every time you insert a magnetic band for a yoke, making it impossible to assemble the yoke. In other words, it cannot be put to practical use as a core leg at all, making it impossible to construct a laminated core. Therefore, in order to use the core legs, it was necessary to tighten the core legs themselves with a certain amount of pressure to increase the rigidity of the core.
一方、前記鉄心脚にある程度の剛性をもたせるために、
鉄心脚を例えば、テーピング等を行なって締付けた場合
、剛性を高めることはできるものの、鉄心脚を必要以上
の締付力で締付けると、即ち、外力を加えると、磁性帯
はこの外力に敏感に反応し、前記過大な締付けにより、
無負荷損、無負荷電流が増加して鉄心特性を悪化させる
とともに、テーピング作業に手間と時間がかかり、生産
性を向上させることが困難であった。On the other hand, in order to give the iron core legs a certain degree of rigidity,
For example, if the core leg is tightened by taping, etc., the rigidity can be increased, but if the core leg is tightened with more than necessary tightening force, that is, if an external force is applied, the magnetic band becomes sensitive to this external force. Reacts and due to said excessive tightening,
No-load loss and no-load current increase, deteriorating core characteristics, and taping work takes time and effort, making it difficult to improve productivity.
（２） 又、焼鈍を行なった非晶質磁性薄帯は、磁性
帯自体が跪くなる性質があるため、積層鉄心の組立後コ
イルを挿入する際、コイルが鉄心脚の角部等に衝接した
りすると、鉄心脚の一部が簡単に欠落、！ＩＩ落して積
層鉄心として使用できなくなったり、あるいは、積層鉄
心として使用できる範囲での剥離等が生じたとしても、
剥離した磁性帯の破片が変圧器の運転中に油中に浮遊し
、これが、万一コイル内に侵入すると、短絡事故を誘発
するおそれがあった。(2) Additionally, annealed amorphous magnetic ribbons have the property of bending over themselves, so when inserting the coils after assembling the laminated core, the coils may collide with the corners of the core legs, etc. If you do so, part of the core leg will easily come off! Even if it drops and becomes unusable as a laminated core, or if peeling occurs within the range where it can be used as a laminated core,
Fragments of the separated magnetic band floated in the oil during operation of the transformer, and if they entered the coil, there was a risk of causing a short circuit accident.
このように、非晶質磁性薄帯を複数枚加熱接着して設け
た磁性帯の単板を所定枚数積層して積層鉄心を製造する
場合、前記積層鉄心自体の剛性強化と脆性対策を充分に
施さない限り、この種鉄心を省エネルギー形の変圧器に
使用することができなくなる問題があった。In this way, when manufacturing a laminated core by laminating a predetermined number of veneers of magnetic strips prepared by heat-bonding a plurality of amorphous magnetic ribbons, it is necessary to sufficiently strengthen the rigidity of the laminated core itself and take measures against brittleness. Unless this is done, there is a problem that this type of core cannot be used in energy-saving transformers.
本発明は前記の問題点に鑑み、鉄心占積率が良好で、し
かも、剛性及び脆性対策を充分に施し、非晶質磁性薄帯
の特長を効果的に引出すようにした変圧器鉄心の製造方
法を提供することを目的とする。In view of the above-mentioned problems, the present invention manufactures a transformer core that has a good core space factor, takes sufficient measures against rigidity and brittleness, and effectively brings out the features of amorphous magnetic ribbon. The purpose is to provide a method.
〔課題を解決するための手段及び作用］本発明は、非晶
質磁性薄帯を複数枚加熱接着して設けた磁性帯を所定の
長さで長方形又は台形状に切断し、この切断した多数枚
の単板を、所要枚数積層して積層鉄心の鉄心脚を形成し
、この鉄心脚を、その両面に高密度に圧縮成形したブレ
スポード等の絶縁物からなる当板を介して所定の締付面
圧で締着して剛性を強化し、このあと鉄心脚に継鉄を各
層毎に接合部が異なるように挿入配置して積層鉄心を構
成し、この積層鉄心に、更に、Ｌ字形又はコ字形に折曲
した絶縁性の覆板を被覆させ、コイル組立時において磁
性帯の欠落、剥落を確実に防止し、非晶質磁性薄帯の特
長を充分に引出してこの種変圧器鉄心の生産性を向上さ
せるようにしたことを特徴とする。[Means and effects for solving the problem] The present invention involves cutting a magnetic strip formed by heat-bonding a plurality of amorphous magnetic thin strips into a rectangular or trapezoidal shape with a predetermined length, and The required number of veneers are laminated to form the core legs of the laminated core, and the core legs are tightened to a specified level through a backing plate made of an insulator such as breathpod, which is compression-molded at high density on both sides. After tightening with surface pressure to strengthen rigidity, yokes are inserted into the core legs and arranged so that the joints are different for each layer to form a laminated core. This type of transformer core is coated with an insulating cover plate bent into a letter shape to reliably prevent the magnetic band from missing or peeling off during coil assembly, and fully brings out the features of the amorphous magnetic ribbon to produce this type of transformer core. It is characterized by improving sexual performance.
以下、本発明の実施例を第１図ないし第８図により説明
する。本発明は三相変圧器用の積層鉄心に実施した例で
説明する。Embodiments of the present invention will be described below with reference to FIGS. 1 to 8. The present invention will be explained using an example in which it is applied to a laminated core for a three-phase transformer.
はじめに、第２図ないし第６図において、１０は本発明
の方法により製造した積層鉄心を示し、この積層鉄心１
０は、非晶質磁性薄帯を複数枚加熱接着してフープ状に
巻回した磁性帯を、巻戻しながら、順次所定の長さ寸法
で長方形又は台形状に切断した多数の単板を積層して構
成した鉄心脚１１及び継鉄１２からなる。そして、前記
鉄心脚１１は、切断した必要枚数の単板を継鉄との組込
みができるよう第３図で示すように積層して構成する。First, in FIGS. 2 to 6, numeral 10 indicates a laminated core manufactured by the method of the present invention, and this laminated core 1
0 is a method of laminating a large number of veneers that are made by heating and bonding multiple amorphous magnetic ribbons and winding them into a hoop shape, and then sequentially cutting them into rectangular or trapezoidal shapes at predetermined lengths while unwinding them. The iron core leg 11 and the yoke 12 are constructed as follows. The core leg 11 is constructed by laminating a required number of cut veneers as shown in FIG. 3 so that they can be assembled into a yoke.
この場合、前記鉄心脚１１は単板を単に積層しただけで
あるので、その積厚Ｌ゛は第３図に２点鎖線で示す積厚
分だけ設計上定めた積厚ｔより厚くなっている。このた
め、前記鉄心脚１１は第４図で示すように、その積層後
、両側面に継鉄の挿入を妨げない範囲内で、幅方向の角
部をテーパー状に切削した絶縁性の当板１３を当接し、
つづいて、しゃこ万力あるいはブレス等の締付装置１４
により前記当板１３を介して鉄心１１１１１を挟持し、
この状態で締付装置１４を操作して鉄心脚１１を所定の
面圧で締付ける。この場合、第８図に示すように、締付
面圧を単純に増せば鉄損Ｘも単純増加の傾向を示してお
り、本発明においては、鉄心ｌ８１１に対する締付面圧
が、第８図のように１〜３ ｋｇ ／ ｃｄの範囲であ
れば非晶質磁性薄帯の特性を損わない、部ち、実用に供
することができる範囲の鉄を貝値を得られることが試験
の結果判明した。このため、本発明は鉄心脚１１を前記
締付面圧（１〜３ｋｇ／ｃ＋ｉ）の範囲内で締付けを行
い、この面圧を維持する上から、第４図のように、鉄心
脚１１を当板１３を介して締付装置１４で締付保持して
いる間に、加熱硬化性の接着剤を塗布したガラスバイン
ドテープ等の締付バンド１５を、当板１３から鉄心１１
１１１にまたがって巻回締着し、第５図で示すように、
所定の締付面圧で締付けられた鉄心Ｘ１ｌｌｌｌを構成
する。このようにして鉄心脚１１を構成すれば、過度の
締付力による締付けを抑制し、締付力過剰による鉄心脚
１１の特性低下を未然に防ぐことができる。In this case, since the core leg 11 is simply laminated with single plates, its lamination thickness L' is thicker than the design-specified lamination thickness t by the lamination thickness indicated by the two-dot chain line in FIG. . For this reason, as shown in FIG. 4, after the core leg 11 is laminated, an insulating backing plate is formed on both sides of the core leg 11 with the corners in the width direction tapered to the extent that it does not interfere with the insertion of the yoke. 13,
Next, a tightening device 14 such as a mantis vise or a brace
sandwiching the iron core 11111 via the contact plate 13,
In this state, the tightening device 14 is operated to tighten the core leg 11 with a predetermined surface pressure. In this case, as shown in FIG. 8, if the tightening surface pressure is simply increased, the iron loss As a result of the test, it was found that within the range of 1 to 3 kg/cd, the characteristics of the amorphous magnetic ribbon will not be impaired, and that it is possible to obtain iron values within a range that can be used for practical purposes. found. Therefore, in the present invention, the core legs 11 are tightened within the range of the tightening surface pressure (1 to 3 kg/c+i), and in order to maintain this surface pressure, the core legs 11 are tightened as shown in FIG. While being tightened and held by the tightening device 14 via the backing plate 13, a tightening band 15 such as a glass bind tape coated with a thermosetting adhesive is pulled from the backing plate 13 to the iron core 11.
111 and winding and tightening, as shown in FIG.
An iron core X1llll is configured that is tightened with a predetermined tightening surface pressure. By configuring the core leg 11 in this manner, it is possible to suppress tightening due to excessive tightening force, and to prevent the characteristics of the core leg 11 from deteriorating due to excessive tightening force.
次に、前述のようにして設けた鉄心！！１１１を用いて
積層鉄心１０を製造する場合について説明すると、前記
鉄心１１１１を第６図に示すように、横倒しの状態で３
本手行に並べ、これら鉄心脚１１の下方端において、継
鉄用の単板を各鉄心脚１１゜１１．１１間にまたがって
各層毎に順次挿入積層し、第６図に示すように、鉄心脚
１１に下部継鉄１２を備えた平面形状がＥ形の積層鉄心
１０ａを形成する。前記下部継鉄１２を各鉄心脚１１に
またがって挿入積層したあと、同じく第６図で示すよう
に、前記継鉄１２及び、この継鉄１２が鉄心脚１１と交
差する鉄心角部ａとに、ブレスポート等の絶縁板をＬ字
形となるように成形加工した覆板１６．１６ａ、１６ｂ
を、前記継鉄１２の周面が直接外部に露出しないようそ
れぞれ第６図の矢印方向から挟持させて被覆し、これら
覆板１６゜１６ａ、１６ｂを介して下部クランプ１７を
鉄心脚１１と同様の締付面圧で下部継鉄１２に締着して
Ｅ形の積層鉄心１０ａを形成する。このあと、前記Ｅ形
の８Ｎ層鉄心１０ａを第７図に示すように起立させる。Next, the iron core installed as described above! ! To explain the case of manufacturing the laminated core 10 using the core 111, as shown in FIG.
These core legs 11 are lined up in this row, and at the lower end of these core legs 11, veneer plates for the yoke are sequentially inserted and laminated in each layer, spanning between each core leg 11° 11.11, as shown in Fig. 6. A laminated core 10a having an E-shaped planar shape is formed by providing a lower yoke 12 on core legs 11. After inserting and stacking the lower yoke 12 across each core leg 11, as shown in FIG. , cover plates 16.16a, 16b formed by molding an insulating plate such as a breath port into an L shape.
are sandwiched and covered from the direction of the arrow in FIG. The E-shaped laminated core 10a is formed by tightening to the lower yoke 12 with a tightening surface pressure of . Thereafter, the E-shaped 8N layer core 10a is erected as shown in FIG.
この際、各鉄心脚１１は当板１３により剛性強化がはか
られ、しかも、下部継鉄１２は覆板１６・・・・・を介
して挟着した下部クランプ１７にて機械的強度の強化が
はかられているので、前記Ｅ形積層鉄心を起立させても
、充分にその自立状態を維持することができる。Ｅ形積
層鉄心１０ａの起立後、各鉄心脚１１には上部継鉄１２
ａ（第２図参照）が挿入される部分を除き、絶縁性の覆
板１６ｃ、１６ｃを当板１３の方向から挟持させて、こ
れら覆板１６ｃ、１６ｃ同士を接着剤等にて止着するこ
とにより、鉄心脚１１の鉄心部分が外部に露出しないよ
うに被覆される。At this time, the rigidity of each core leg 11 is strengthened by a contact plate 13, and the mechanical strength of the lower yoke 12 is strengthened by a lower clamp 17 which is clamped via a covering plate 16. Since the E-shaped laminated core is erected, it can sufficiently maintain its self-supporting state. After the E-type laminated core 10a is erected, an upper yoke 12 is attached to each core leg 11.
Insulating cover plates 16c, 16c are sandwiched from the direction of the contact plate 13, except for the part where a (see Fig. 2) is inserted, and these cover plates 16c, 16c are fixed together with adhesive or the like. As a result, the core portion of the core leg 11 is covered so as not to be exposed to the outside.
このあと、鉄心脚１１の上端部を、その部位を破損しな
い程度にテープ等を用いて先細状に少し窄めてから、コ
イル１日を各鉄心ａｌｌに嵌合する。Thereafter, the upper end of the core leg 11 is tapered a little using tape or the like so as not to damage that part, and then the coils are fitted to each core.
このコイル１８の嵌合に際しては、前述のように、鉄心
脚１１の上端部を除きＥ形積層鉄心１０ａの鉄心部分の
すべてが覆板１６・・・・・にて被覆されているので、
コイル１Ｂが鉄心部分と衝接してこれを破損させるよう
なことはない。仮に、コイル１８が鉄心ｌｌ１ｊ１１と
衝突し、その一部が欠落したとしても、その欠落片は覆
板１６ｃに阻止されて外部に逃出することはない。When fitting the coil 18, as mentioned above, all of the core portion of the E-type laminated core 10a except the upper end of the core leg 11 is covered with the cover plate 16.
There is no possibility that the coil 1B will collide with the iron core and damage it. Even if the coil 18 collides with the iron core ll1j11 and a part of it is missing, the missing piece will be blocked by the cover plate 16c and will not escape to the outside.
各鉄心脚１１にコイル１８を嵌合させたあと、Ｅ形積層
鉄心１０ａの下部継鉄Ｉ２と同様に、継鉄用の単板を、
前記鉄心脚１１上端の先細状態を解いてから順次挿入積
層して第２図で示すように、上部継鉄１２ａを形成する
。上部継鉄１２ａの形成後は、下部継鉄１２の場合と同
じく、継鉄１２ａの長さ方向の上側には、第２図のよう
に覆仮１６を、側端部には覆板１６ｄを、更に、継鉄１
２ａの長さ方向の下側からは覆板１６ｂ（図示せず）を
それぞれ挟持させ、この状態で上部クランプ１９を鉄心
脚１１の締付面圧と同様の面圧で締着する。この上部ク
ランプ１９の締着により、積層鉄心及び同コイル１８の
組立作業を終了するものである。After fitting the coil 18 to each core leg 11, attach a single plate for the yoke in the same way as the lower yoke I2 of the E-type laminated core 10a.
After releasing the tapered state of the upper end of the core leg 11, the upper yoke 12a is formed by sequentially inserting and stacking the core legs 11, as shown in FIG. After forming the upper yoke 12a, as in the case of the lower yoke 12, a cover 16 is placed on the upper side in the length direction of the yoke 12a as shown in FIG. 2, and a cover plate 16d is placed on the side end. , furthermore, yoke 1
A cover plate 16b (not shown) is clamped from the lower side in the longitudinal direction of the upper clamp 2a, and in this state, the upper clamp 19 is tightened with the same surface pressure as that of the core leg 11. By tightening the upper clamp 19, the assembly work of the laminated core and the coil 18 is completed.
なお、本発明は、覆仮１６・・・・・の一部をクランプ
１７．１９を利用して積層鉄心１０に固定する例につい
て説明したが、これに限定せず、接着剤あるいは、熱硬
化性のガラスバインドテープ等を用いて積層鉄心１０に
脱落しないように固定するようにしてもよい。Although the present invention has been described with reference to an example in which a part of the covering material 16 is fixed to the laminated core 10 using the clamps 17 and 19, the present invention is not limited to this, and adhesives or thermosetting It may be fixed to the laminated iron core 10 using a glass bind tape or the like so that it does not fall off.
又、第９図は本発明の他の実施例を示すもので、鉄心脚
１１を所定の締付面圧で締付ける際、鉄心脚１１の積層
面と当板１３との間に、耐油及び耐熱性に優れたニトリ
ルゴム等の弾性部材２０を介在させ、鉄心脚１１に対す
る締付面圧を前記弾性部材２０の弾性力を利用して長年
月にわたり一定に保持させるようにしても本発明は成立
する。FIG. 9 shows another embodiment of the present invention, in which when the core leg 11 is tightened with a predetermined tightening surface pressure, an oil-resistant and heat-resistant The present invention can also be achieved even if an elastic member 20 made of nitrile rubber or the like having excellent properties is interposed, and the clamping surface pressure on the core leg 11 is kept constant for many years by utilizing the elastic force of the elastic member 20. do.
更に、本発明は加熱接着した磁性帯に限定せず、通常の
非晶質磁性薄帯を鉄心材料として使用してもよいことは
勿論である。Furthermore, the present invention is not limited to heat-bonded magnetic strips, and it goes without saying that ordinary amorphous magnetic ribbons may be used as the core material.
以上説明したように、本発明の方法にて製造した非晶質
磁性薄帯からなる積層鉄心においては、次に示すような
効果を存する。As explained above, the laminated core made of amorphous magnetic ribbons manufactured by the method of the present invention has the following effects.
（１） 非晶質磁性薄帯の単板を積層して設けた鉄心
脚は、その両端面が当板により補強され、かつ、所定の
締付面圧により、常に一定の積厚寸法でもって製造する
ことができるので、非晶質磁性薄帯の特徴を効果的に引
出し、しかも、剛性の強化をはかることが可能となり、
これにより継鉄の組立に際しても、鉄心脚に悪影響を与
えることなく、鉄心組立が行い得、この種積層鉄心の生
産性を著しく向上させることができる。(1) The core legs, which are made by laminating single plates of amorphous magnetic thin strips, have both end faces reinforced with abutment plates, and are always maintained at a constant stacking thickness by a predetermined tightening surface pressure. Since it can be manufactured, it is possible to effectively bring out the characteristics of amorphous magnetic ribbon and also strengthen its rigidity.
As a result, when assembling the yoke, the core can be assembled without adversely affecting the core legs, and the productivity of this type of laminated core can be significantly improved.
（２）又、本発明はその製造過程において、鉄心部分の
すべてを絶縁物からなる覆板にて被覆する方法が採用さ
れており、これによりコイル組立時等において、積層鉄
心に外力が加えられて破損するようなことは全くなく、
かつ、積層鉄心自体前記覆板にて密閉に近い状態で包囲
されているので、例え、外力により積層鉄心の一部が欠
落して、も、その欠落片は覆板内に閉じこめられて外部
に逃出することがないため、欠落片によってコイルが短
絡し、焼損するといった事故を確実に防止することがで
きる。(2) In addition, in the manufacturing process of the present invention, a method is adopted in which all of the core portions are covered with a cover plate made of an insulator, which prevents external force from being applied to the laminated core during coil assembly. There is no damage at all,
In addition, since the laminated core itself is surrounded by the cover plate in a nearly hermetically sealed state, even if a part of the laminated core breaks off due to external force, the missing piece will be confined within the cover plate and will not be exposed to the outside. Since it does not escape, it is possible to reliably prevent accidents such as short-circuiting and burning out of the coil due to missing pieces.
（３） 更に、積層鉄心は覆仮に包囲されているので
、この覆板が緩衝材的な役割を果すことが可能となリ、
これにより積層鉄心の鉄心特性を何ら損うことなく、非
晶質磁性薄帯の特徴を効果的に利用した積層鉄心が製造
でき、しかも、前記覆板は鉄心部分に嵌め合い方式で取
付けることができるので、この種積層鉄心の製造工程を
簡略化することができる。(3) Furthermore, since the laminated core is surrounded by a cover, this cover plate can act as a buffer material.
As a result, it is possible to manufacture a laminated core that effectively utilizes the characteristics of the amorphous magnetic ribbon without impairing the core properties of the laminated core.Moreover, the cover plate can be attached to the core portion by a fitting method. Therefore, the manufacturing process of this type of laminated core can be simplified.
第１図は本発明の方法により製造した積層鉄心を用いた
変圧器の斜視図、第２図は本発明の方法により製造した
積層鉄心の斜視図、第３図ないし第５図は鉄心脚の製造
工程を説明するための斜視図、第６図は積層鉄心の概略
を示す分解斜視図、第７図は同じく積層鉄心にコイル組
立を行う場合を説明するための分解斜視図、第８図は積
層鉄心の締付面圧と鉄損との関係を示す線図、第９図は
本発明の他の実施例を示す要部断面図である。
１０・積層鉄心 １１・鉄心脚
１２・継鉄 １３・当板FIG. 1 is a perspective view of a transformer using a laminated core manufactured by the method of the present invention, FIG. 2 is a perspective view of a laminated core manufactured by the method of the present invention, and FIGS. 3 to 5 are views of core legs. FIG. 6 is an exploded perspective view schematically showing the laminated core, FIG. 7 is an exploded perspective view illustrating the case of assembling a coil to the laminated core, and FIG. 8 is a perspective view for explaining the manufacturing process. A diagram showing the relationship between the clamping surface pressure and iron loss of a laminated core, and FIG. 9 is a sectional view of a main part showing another embodiment of the present invention. 10. Laminated core 11. Core leg 12. Yoke 13. Plate
Claims (1)
あらかじめ設定された締付面圧で所定の積厚となるまで
締付けて、この積厚をテープ等の締付保持部材によって
保持させ、前記所定の積厚に保持された鉄心脚に、継鉄
用の単板を前記鉄心脚と交差させて挿入積層して下部継
鉄及び上部継鉄を備えた積層鉄心を構成し、この積層鉄
心を構成する鉄心脚と上，下部の継鉄とを、絶縁板を所
定形状に折曲して形成した覆板にて被覆し、この覆板を
積層鉄心締付用のクランプあるいは接着剤等の脱落阻止
手段にて積層鉄心に固定支持するようにしたことを特徴
とする変圧器鉄心の製造方法。The core legs are made by laminating the required number of veneers of amorphous magnetic thin strips.
Tighten with a preset tightening surface pressure until a predetermined stacking thickness is achieved, hold this stacking thickness with a tightening holding member such as tape, and attach a yoke to the core leg that has been maintained at the predetermined stacking thickness. A laminated core with a lower yoke and an upper yoke is constructed by inserting and laminating the veneers intersecting with the core legs, and the core legs constituting this laminated core and the upper and lower yokes are insulated. The cover plate is covered with a cover plate formed by bending a plate into a predetermined shape, and the cover plate is fixedly supported on the laminated core using a clamp for tightening the laminated core or a falling prevention means such as adhesive. Characteristic manufacturing method of transformer core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63189070A JPH0239404A (en) | 1988-07-28 | 1988-07-28 | Manufacture of transformer iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63189070A JPH0239404A (en) | 1988-07-28 | 1988-07-28 | Manufacture of transformer iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0239404A true JPH0239404A (en) | 1990-02-08 |
| JPH053123B2 JPH053123B2 (en) | 1993-01-14 |
Family
ID=16234799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63189070A Granted JPH0239404A (en) | 1988-07-28 | 1988-07-28 | Manufacture of transformer iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0239404A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05251252A (en) * | 1992-03-06 | 1993-09-28 | Hitachi Ltd | Manufacture of amorphous transformer |
| EP1244119A1 (en) * | 2001-03-20 | 2002-09-25 | Siemens Aktiengesellschaft | Transformer or coil |
| WO2017159163A1 (en) * | 2016-03-17 | 2017-09-21 | 株式会社日立産機システム | Amorphous transformer and laminated core used in same |
| WO2018062274A1 (en) * | 2016-09-30 | 2018-04-05 | 日立金属株式会社 | Magnetic core piece and magnetic core |
-
1988
- 1988-07-28 JP JP63189070A patent/JPH0239404A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05251252A (en) * | 1992-03-06 | 1993-09-28 | Hitachi Ltd | Manufacture of amorphous transformer |
| EP1244119A1 (en) * | 2001-03-20 | 2002-09-25 | Siemens Aktiengesellschaft | Transformer or coil |
| WO2017159163A1 (en) * | 2016-03-17 | 2017-09-21 | 株式会社日立産機システム | Amorphous transformer and laminated core used in same |
| JPWO2017159163A1 (en) * | 2016-03-17 | 2018-10-18 | 株式会社日立産機システム | Amorphous transformer and iron core used therefor |
| WO2018062274A1 (en) * | 2016-09-30 | 2018-04-05 | 日立金属株式会社 | Magnetic core piece and magnetic core |
| JP2018060832A (en) * | 2016-09-30 | 2018-04-12 | 日立金属株式会社 | Magnetic core piece and magnetic core |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH053123B2 (en) | 1993-01-14 |
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