JPS62241318A - Manufacture of resin molded transformer - Google Patents
Manufacture of resin molded transformerInfo
- Publication number
- JPS62241318A JPS62241318A JP8380286A JP8380286A JPS62241318A JP S62241318 A JPS62241318 A JP S62241318A JP 8380286 A JP8380286 A JP 8380286A JP 8380286 A JP8380286 A JP 8380286A JP S62241318 A JPS62241318 A JP S62241318A
- Authority
- JP
- Japan
- Prior art keywords
- core
- resin
- wound
- winding
- frame
- 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.)
- Pending
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 52
- 239000011347 resin Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 238000005470 impregnation Methods 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 43
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000001464 adherent effect Effects 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 93
- 230000000694 effects Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009503 electrostatic coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000003466 welding 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〕
本発明は非晶質磁性合金薄帯からなるノーカット形巻鉄
心を用い九樹脂モールド形変圧器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 resin mold type transformer using an uncut wound core made of an amorphous magnetic alloy ribbon.
近時変圧器の鉄心においては、鉄心材料として非晶質磁
性合金薄帯を用いることが検討されている。この非晶質
磁性合金薄帯は磁性合金の浴場を超急冷して製造するも
ので、鉄損が極めて小さく優れた磁気特性を有し鉄心材
料として適している。Recently, the use of amorphous magnetic alloy ribbon as the core material for transformer cores has been considered. This amorphous magnetic alloy ribbon is manufactured by ultra-quenching a magnetic alloy bath, and has extremely low iron loss and excellent magnetic properties, making it suitable as an iron core material.
しかし、非晶質磁性合金薄帯は低損失である反面薄くて
脆いことから加工が１雌で焼鈍後に脆性を生じるという
問題点がある。このため、非晶質磁性合金薄帯により変
圧器鉄心を構成する場合には鉄心をノーカット形巻鉄心
構造とし、この巻鉄心に巻線を直接巻込む構成が採用さ
れている。However, although the amorphous magnetic alloy ribbon has low loss, it is thin and brittle, so there is a problem in that it becomes brittle after being annealed after being processed in one piece. For this reason, when constructing a transformer core using an amorphous magnetic alloy ribbon, a structure is adopted in which the core has an uncut wound core structure and the windings are directly wound around this wound core.
一方、最近層内設置の変圧器に樹脂モールド形変圧器が
多用されてきている。この方式の変圧器は合成樹脂を真
空加圧含浸した巻線を鉄心と組合せて構成し丸もので、
２ＫＶ／−前後の電位傾度に耐え得る絶縁強度を有し、
鼎燃性とメンテナンスの向上および耐熱性の向上を図る
ことができる特徴がある。この特徴を活かして非晶質磁
性合金薄帯からなる樹脂モールド形変圧器を構成するこ
とが考えられるが、モールドした巻線に巻鉄心を組込む
となるとノーカット形では困難で、ワンターンカット形
ま九はＣカット形にせざるを得ない。On the other hand, resin molded transformers have recently been frequently used as transformers installed in layers. This type of transformer is round and consists of a winding impregnated with synthetic resin under vacuum pressure and an iron core.
It has an insulation strength that can withstand a potential gradient of around 2KV/-,
It has the characteristics of improving flammability, maintenance, and heat resistance. It is conceivable to take advantage of this feature to construct a resin-molded transformer made of amorphous magnetic alloy ribbon, but it is difficult to incorporate a wound core into a molded winding with an uncut type, has no choice but to be C-cut.
このため切断加工が必要になるばかりか、巻線への組込
み時に、焼鈍して脆くなった非晶質磁性合金薄帯を取シ
扱わなければならないので、巻鉄心に損傷を生じるおそ
れがある。For this reason, not only cutting is required, but also the amorphous magnetic alloy ribbon, which has become brittle due to annealing, must be handled during assembly into the winding, which may cause damage to the wound core.
一方、樹脂モールド形変圧器には巻鉄心と巻線を一体に
樹脂モールドする構成もある。しかし、この構成では非
晶質磁性合金薄帯が応力感受性が大きく外力を受けると
磁気特性が大きく低下する性質があるので、樹脂硬化時
の収縮力が巻鉄心を構成する非晶質磁性合金薄帯に作用
しないようくしなければならない。On the other hand, some resin molded transformers have a structure in which the wound core and the winding are integrally molded with resin. However, in this configuration, the amorphous magnetic alloy thin strip is highly sensitive to stress and its magnetic properties are significantly reduced when subjected to external force, so the shrinkage force during resin curing is It must be made so that it does not affect the belt.
そこで、その対策として、従来よシ第５図に示す如く、
あらかじめ円筒形の樹脂製ケース２ｔ−準備し、このケ
ース２に非晶質磁性合金薄帯からなる巻鉄心１を挿入し
てケース２の開口に蓋３を接着して密封し、その後にケ
ース２の周囲に巻線（図示せず）を巻回して巻鉄心ｌと
巻線を一体に樹脂モールドして、樹脂硬化時の収縮力が
巻鉄心に作用しないようにした構成の変圧器が知られて
いる。Therefore, as a countermeasure, as shown in Fig. 5,
A cylindrical resin case 2t is prepared in advance, a wound core 1 made of an amorphous magnetic alloy ribbon is inserted into the case 2, a lid 3 is glued to the opening of the case 2, and the case 2 is sealed. A known transformer has a structure in which a winding (not shown) is wound around the core L and the winding are integrally molded in resin so that the shrinkage force when the resin hardens does not act on the core. ing.
しかして、前述した従来の方法において巻鉄心１を収納
するために用いるケース２および蓋３は、樹脂成製品或
いは樹脂積層材を貼シ合せて作るため、シール効果、強
度及び寸法精度は高い。In the conventional method described above, the case 2 and lid 3 used to house the wound core 1 are made by laminating resin products or resin laminates, and therefore have high sealing effects, strength, and dimensional accuracy.
しかし、ケース２に収納する巻鉄心１は非晶ＪＸ磁性合
金薄帯の製造条件に起因する巻回厚さの変動が大きく、
巻鉄心１の仕上シ寸法の精度および内・外径の同心度は
低い。このため、巻鉄心１０大きさがケースＩＫ合いに
＜＜、巻鉄心１をケース２に挿入する作業が難しくなる
。また、焼鈍後の脆化し丸巻鉄心２がケース２と衝突す
ると破損する烏それがある等の問題がある。これらの対
策としてケース２の内径を余裕をもつ九大きさとし′て
いるが、この場合、ケース２とこのケース２に収納され
た巻鉄心ｌとの間に隙間が生じ、後工程の組立作業時や
、変圧器完成後の輸送等において振動が加わると、ケー
ス２の内部で巻鉄心１が躍ってケース２と膨突し破損す
ることが多く、またケース２が大形化することにより変
圧器の外形寸法も大きくなるという問題がある。However, the wound core 1 housed in the case 2 has a large variation in the winding thickness due to the manufacturing conditions of the amorphous JX magnetic alloy ribbon.
The accuracy of the finished dimensions of the wound core 1 and the concentricity of the inner and outer diameters are low. Therefore, if the size of the wound core 10 does not match the case IK, it becomes difficult to insert the wound core 1 into the case 2. Further, there is a problem that the round-wound core 2 becomes brittle after annealing and breaks when it collides with the case 2. As a countermeasure against these problems, the inner diameter of the case 2 is set to a size of 9 to have a margin, but in this case, a gap is created between the case 2 and the wound core l housed in the case 2, which may cause problems during assembly work in the subsequent process. When vibrations are applied during transportation after the transformer is completed, the wound core 1 often jumps inside the case 2 and swells with the case 2, causing damage. There is a problem in that the external dimensions of the device also increase.
さらに、巻鉄心ｌが矩形鉄心や段付鉄心である場合には
、ケース２を鉄心形状に合せるためにケース形状が複雑
となシ、ケースの製造が困難となるという問題がある。Furthermore, when the wound core 1 is a rectangular core or a stepped core, there is a problem that the case shape is complicated in order to match the case 2 to the core shape, making it difficult to manufacture the case.
本発明は前記事情に基づいてなされたもので、簡易な構
成であシながら竪牢で巻鉄心を構成する非晶質磁性合金
薄帯の磁気特性低下や破損を防止できる鉄心密封体を備
え九樹脂モールド形変圧器の製造方法を提供することを
目的とする。The present invention has been made based on the above-mentioned circumstances, and is equipped with a core sealing body that has a simple structure and can prevent the deterioration of the magnetic properties and damage of the amorphous magnetic alloy ribbon constituting the wound core in the vertical direction. The purpose of the present invention is to provide a method for manufacturing a resin molded transformer.
〔問題点を解決する丸めの手段と作用〕上記目的を達成
するために本発明の樹脂モールド形変圧器の製造方法に
おいては、筒形の巻枠に非晶質磁性薄帯を巻回して形成
した巻鉄心の外周部を筒形外周枠で覆い、前記巻枠と外
周枠にはさまれ丸巻鉄心の端面に、端面形状に合致した
絶縁シートからなる端面板を挿入し、外周枠と端面板の
表面に粉末静電塗装による樹脂被膜を形成して隙間をう
めることにより、鉄心形状に適合し九機械的にも竪牢な
鉄心密封体を形成し、壱廁と鉄心との一体樹脂モールド
時に樹脂浸透を防止したものである。従って、本発明に
よれば眸心密封体が簡単に構成できて樹脂収縮応力によ
る巻鉄心への悪影響を防止でき、巻鉄心形状に鉄心密封
体が適合しているために外力、振動尋により内部の巻鉄
心が破損することを防止することができる。[Means and effects of rounding to solve the problem] In order to achieve the above object, in the method for manufacturing a resin molded transformer of the present invention, an amorphous magnetic ribbon is wound around a cylindrical winding frame. The outer periphery of the rolled core is covered with a cylindrical outer frame, and an end plate made of an insulating sheet that matches the shape of the end is inserted into the end face of the round core between the outer frame and the outer frame. By forming a resin coating on the surface of the face plate using powder electrostatic coating to fill in the gaps, a core sealing body that conforms to the core shape and is mechanically rigid is formed, and an integral resin mold of the core and core is formed. This prevents resin penetration. Therefore, according to the present invention, the core sealing body can be easily configured, preventing the adverse effects on the wound core due to resin contraction stress, and since the core sealing body conforms to the shape of the wound core, external forces and vibrations can cause internal damage to the core. This can prevent the wound core from being damaged.
以下本発明の一実施例を図面によって説明する。 An embodiment of the present invention will be described below with reference to the drawings.
先ず、第１図および第２図に示すよう罠金属円筒又は金
属角筒の巻枠１３（図では角筒）の上に非晶質磁性合金
薄帯１２を巻回し矩形のノーカット形巻鉄心１１を形成
する。First, as shown in FIGS. 1 and 2, an amorphous magnetic alloy ribbon 12 is wound onto a winding frame 13 (a rectangular tube in the figure) made of a trap metal cylinder or a rectangular metal tube to form a rectangular uncut wound core 11. form.
次に巻鉄心１１の外周面に金属薄板（例えば銅板）を巻
いて、その巻終りをろう付等で接合し円筒又は角筒の外
周枠１４（図では角筒）を形成する。この際巻枠１３及
び外周枠１４は、その両端が巻鉄心１ノの両端面１１ａ
、Ｉｌｂよ９１１以上外方に突出するように巻鉄心１１
の幅よシ大なる幅寸法を有するものを使用する。また、
外周枠１４の一部に小孔をあけ、この小孔に真空排気用
パイプ１７を挿入して溶接により固定する。Next, a metal thin plate (for example, a copper plate) is wound around the outer peripheral surface of the wound core 11, and the ends of the windings are joined by brazing or the like to form a cylindrical or square tube outer peripheral frame 14 (a square tube in the figure). At this time, the winding frame 13 and the outer peripheral frame 14 have both ends 11a of the winding core 1.
, Ilb 911 or more, the wound core 11 protrudes outward.
Use one with a width greater than the width of the Also,
A small hole is made in a part of the outer peripheral frame 14, and a vacuum exhaust pipe 17 is inserted into the small hole and fixed by welding.
しかる後に１前記巻枠１３および外周枠１４の各端部と
巻鉄心１１の端面１１ａ、ｌｌｂとに挟まれた一対の凹
部に、巻鉄心１ノの端面形状に合致した環状をなす絶縁
シート（例えばポリエステルフィルム〕よりなる端面板
１５．Ｉｓを嵌め込み巻鉄心１ノの端面１１ｍ、１１ｂ
Ｋ密着させて接着剤で部分的に仮止めする。この場合、
巻枠１３及び外周枠１４と端面板１５，１５との隙間は
極力少くする。Thereafter, a ring-shaped insulating sheet (conforming to the shape of the end surface of the winding core 1) is inserted into a pair of recesses sandwiched between each end of the winding frame 13 and the outer peripheral frame 14 and the end faces 11a and llb of the winding core 11. End faces 11m, 11b of wound core 1 are fitted with end plates 15.Is made of polyester film, for example.
K.Put them in close contact and temporarily fix them partially with adhesive. in this case,
The gaps between the winding frame 13 and the outer peripheral frame 14 and the end plates 15, 15 are made as small as possible.
次に％第３図に示す如く巻鉄心１１に対して静電粉体塗
装装置を用いて静電粉体塗装を行なう。Next, as shown in FIG. 3, the wound core 11 is coated with electrostatic powder using an electrostatic powder coating apparatus.
すなわち、図中１８は装置本体、１９は高屯圧発生装ｆ
ｉ１２１ｔ／Ｃ接続した高圧電極、２０は多孔質板であ
る。巻鉄心１１は装置本体１８の上部に設けたマンドレ
ル２２に嵌合して取付ける。このマンドレル２２は巻鉄
心１１の巻枠１３の形状に適合した円形断面又は粗形断
面のものを使用し、駆動軸２３と結合して回転させる。That is, in the figure, 18 is the main body of the device, and 19 is the high pressure generator f.
i121t/C connected high voltage electrode, 20 is a porous plate. The wound core 11 is attached by fitting into a mandrel 22 provided at the upper part of the device main body 18. This mandrel 22 has a circular or rough cross section that matches the shape of the winding frame 13 of the wound core 11, and is coupled to a drive shaft 23 and rotated.
そして、装置本体１８の下部から空気２４を供給し、こ
の空気２４ｔ−高圧電極１９ｆＣよりイオン化して多孔
質板２０に通すことにより多孔質板２０上に載せた粉体
２５を浮遊させるとともに、粉体２５を静電的に帯電さ
せる。帯電された粉体２５は装置本体１８の上部で霧状
となフ、正極の □高電位の巻鉄心１ノに静電的に引
張られる。一方、巻鉄心１１は駆動軸２３によりマンド
レル２２を介して回転させる。このため、粉体２５はマ
ンドレル２２と嵌合する巻枠１３の円周を除いて巻鉄心
１ノの外周枠１４と端面板１５．１５表表面体に一様に
付着する。Then, air 24 is supplied from the lower part of the device body 18, and the air 24t is ionized by the high voltage electrode 19fC and passed through the porous plate 20, thereby suspending the powder 25 placed on the porous plate 20. The body 25 is electrostatically charged. The charged powder 25 forms a mist at the top of the device body 18 and is electrostatically attracted to the high potential wound core 1 of the positive electrode. On the other hand, the wound core 11 is rotated by a drive shaft 23 via a mandrel 22. Therefore, the powder 25 is uniformly attached to the outer peripheral frame 14 of the wound core 1 and the surface of the end plates 15 and 15, except for the circumference of the winding frame 13 that fits into the mandrel 22.
その後、加熱炉で加熱して外周枠１４および端面板１５
．１５に付着した粉末樹脂を溶解硬化し、樹脂被膜Ｊ６
を形成する。この樹脂被膜１６は巻枠１３および外周枠
１４と端面板Ｉｓ、１５との隙間を封止する。これによ
り巻枠１３、外周枠１４、端面板１５ 、Ｉｓおよび樹
脂＠＠１６とで巻鉄心１１の表面全体を密封する鉄心密
封体＾を構成する。Thereafter, the outer peripheral frame 14 and the end plate 15 are heated in a heating furnace.
．． 15 is melted and hardened to form a resin coating J6.
form. This resin coating 16 seals the gaps between the winding frame 13 and the outer peripheral frame 14 and the end plates Is and 15. As a result, the winding frame 13, the outer peripheral frame 14, the end plate 15, Is, and the resin @@16 form a core sealing body that seals the entire surface of the wound core 11.
次いで、巻鉄心１ノの全周（円形鉄心の場合）又は脚部
（矩形鉄心の場合〕に巻線を巻回する。Next, the winding wire is wound around the entire circumference (in the case of a circular core) or around the legs (in the case of a rectangular core) of the wound core 1.
ｗｃ４図は矩形の巻鉄心１１の両脚に巻線２６を巻回し
た場合を示している。巻線作業は通常ノーカット形巻鉄
心におけるｌＩ！ｊ＋ｉｌＩ！工程の場合と同様に手作
業又は専用の９１１Ｍ機により巻線ｔ−巻込む。Figure wc4 shows a case where the winding 26 is wound around both legs of the rectangular wound core 11. Winding work is usually carried out on uncut wound cores. j+ilI! As in the process, the winding is wound manually or by a dedicated 911M machine.
次に１第４図で示すように巻１１Ｍ２Ｂに対して樹脂含
浸処理を行なう。この樹脂含浸処理は、巻線２６を巻鉄
心１１とともに外タンク２７内の内タンク２１ｊＫ配置
して行なう。この時、巻鉄心ｚ１の外周枠ｚ４に設けた
真空排気用バイブ１２を上部にし、このパイプ１７に接
続パイプ２９を継ぎ足して内タンク２８の上部縁よシ上
部に引出す。Next, as shown in FIG. 1, the volume 11M2B is impregnated with a resin. This resin impregnation treatment is performed by arranging the winding 26 together with the wound core 11 in the inner tank 21jK in the outer tank 27. At this time, the evacuation vibrator 12 provided on the outer peripheral frame z4 of the wound iron core z1 is placed at the top, and a connecting pipe 29 is added to this pipe 17 and pulled out above the upper edge of the inner tank 28.
そして、真空ポンプ３０により内タンク２８内を排気し
て真空乾燥する。この時、真空排気用バイブ１７を介し
て鉄心密封体Ａの内部も真空に排気される。その後に、
レジンタンク３１よシ脱泡ずみの拘脂液３２を内タンク
２８下部に注入し、徐々にその液面を上げて巻線１６内
に樹脂液２２を完全に含浸する。ここで、巻鉄心１１は
その表面を巻枠Ｚ３、外周枠ｚ４、端面板１５．１５及
び樹脂被Ｍ＆１６．１６で構成された固くて緻密な鉄心
密封体Ａで保膿しているので、樹脂が鉄心密封体Ａを通
して巻鉄、心１ｚに浸入することはない。Then, the inside of the inner tank 28 is evacuated by the vacuum pump 30 to perform vacuum drying. At this time, the inside of the core sealed body A is also evacuated to vacuum via the evacuation vibrator 17. After that,
A defoamed fat-retaining liquid 32 is poured into the lower part of the inner tank 28 from the resin tank 31, and the liquid level is gradually raised to completely impregnate the resin liquid 22 into the winding 16. Here, the surface of the wound core 11 is protected by a hard and dense core sealing body A composed of a winding frame Z3, an outer peripheral frame Z4, an end plate 15.15, and a resin cover M&16.16, so that the resin will not penetrate through the core sealing body A into the winding iron and the core 1z.
また内タンク２７内を真空に保持する際、真空排気用バ
イブ１７を通じて鉄心密封体へ内部も同様に真空に排気
して同圧に保持するために、鉄心密封体Ａには有害な内
圧が作用せず、これが変形、破損することはない。なお
、小形の変圧器では鉄心密封体Ａ内を真空排気しなくて
も問題ない。大形の変圧器では鉄心密封体内の圧力約１
気圧によって鉄心密封体に変形、漏れが生ずる場合があ
る。Furthermore, when maintaining the inside of the inner tank 27 in a vacuum, the inside is also evacuated to the core sealing body through the evacuation vibrator 17 and maintained at the same pressure, so harmful internal pressure acts on the core sealing body A. This will not cause any deformation or damage. Note that in the case of a small transformer, there is no problem even if the inside of the core sealed body A is not evacuated. In large transformers, the pressure inside the core enclosure is approximately 1
Air pressure may cause the core seal to deform or leak.
従来の樹脂ケースでも蓋の接着部より洩れが発生するこ
とがあった。なお、真空排気用パイプ１７は含浸樹脂の
硬化後適当な位置で切断し先端を封じこめる。Even with conventional resin cases, leakage sometimes occurred from the adhesive part of the lid. Incidentally, the evacuation pipe 17 is cut at an appropriate position after the impregnated resin has hardened, and the tip is sealed.
しかして、この製造方法においては、樹脂含浸処理を行
なう場合に、巻鉄心１１を構成する非晶質磁性合金薄帯
１２には、合成樹脂の硬化収縮力が作用することはない
ので、非晶質磁性合金薄帯１２の磁気特性の低下がない
。However, in this manufacturing method, when performing the resin impregnation treatment, the curing shrinkage force of the synthetic resin does not act on the amorphous magnetic alloy ribbon 12 constituting the wound core 11, so the amorphous There is no deterioration in the magnetic properties of the high quality magnetic alloy ribbon 12.
ま九、鉄心密封体＾を構成する樹脂被膜１６を形成する
静電粉体塗装は、巻鉄心１１の非晶質磁性合金薄帯１２
が幅方向に不揃いであっても、巻鉄心１ノの端面に設け
た端面板１５．１５の滑かな表面に樹脂を塗装するので
、容易に均一に行なうことが可能となる。この場合端面
板１５．１５と巻枠１３および外周枠１４との境界の隙
間は僅少であシ、しかも端面板１５．１５が巻枠Ｚ３と
外周枠１４の端部に挟まれた凹部にあるために、静電粉
体塗装時に粉体樹脂が巻枠１３と外周枠１４の端部間に
十分付着堆積されるので、端面板１５．１５と巻枠１３
および外周枠１４との境界を十分密封することができる
。9. The electrostatic powder coating that forms the resin coating 16 constituting the core sealed body is applied to the amorphous magnetic alloy ribbon 12 of the wound core 11.
Even if they are uneven in the width direction, the smooth surface of the end plate 15.15 provided on the end face of the wound core 1 is coated with resin, so it can be easily and uniformly coated. In this case, the gap between the end plate 15.15, the winding frame 13, and the outer frame 14 is very small, and the end plate 15.15 is located in the recess between the ends of the winding frame Z3 and the outer frame 14. Therefore, during electrostatic powder coating, powder resin is sufficiently adhered and deposited between the ends of the winding frame 13 and the outer frame 14, so that the end plate 15.15 and the winding frame 13
And the boundary with the outer peripheral frame 14 can be sufficiently sealed.
さらに１巻鉄心１１は鉄心密封体Ａで機械的に保護され
ているので、変圧器の製造工程中の取扱い時に巻鉄心１
１ｔ／Ｃ加わる外力により、非晶質磁性合金薄帯１２の
磁気特性を低下させることがなく、破損も防止できる。Furthermore, since the first-turn core 11 is mechanically protected by the core seal A, the first-turn core 11 is protected during handling during the manufacturing process of the transformer.
An external force of 1 t/C does not reduce the magnetic properties of the amorphous magnetic alloy ribbon 12, and damage can be prevented.
なお、巻鉄心１１に予め防錆剤を塗布しておき、巻線２
６の樹脂含浸処理後に真空排気バイブ１７を閉じて鉄心
密封体＾を封じることにより、巻鉄心１１に塗布した防
錆剤は巻鉄心１１の非晶質磁性合金薄帯Ｘ２に対する防
錆効果を長期にわたって保持することができる。In addition, a rust preventive agent is applied to the winding core 11 in advance, and the winding 2
By closing the vacuum evacuation vibrator 17 and sealing the core sealing body ^ after the resin impregnation treatment in Step 6, the rust preventive agent applied to the wound core 11 has a long-term rust preventive effect on the amorphous magnetic alloy ribbon X2 of the wound core 11. can be held for a long time.
以上説明したように本発明の樹脂モールド形変圧器の製
造方法によれば、安価で簡単な構成の鉄心密封体で巻鉄
心を密封し、巻線に樹脂含浸処理を行なう時に樹脂が巻
鉄心に浸入することを阻止し、樹脂圧力の作用で巻鉄心
を構成する非晶質磁性合金薄帯の磁気特性が低下するこ
とを防止できる。しかも、鉄心密封体は巻鉄心の周囲全
体をその形状および大きさに応じて密に接して包囲する
ために、外部振動により巻鉄心が振動することがなく、
非晶質磁性合金薄帯の磁気特性の低下および破損を防止
することができる。As explained above, according to the method of manufacturing a resin molded transformer of the present invention, the wound core is sealed with a core sealing body having an inexpensive and simple structure, and when the winding is impregnated with resin, the resin is applied to the wound core. This can prevent the magnetic properties of the amorphous magnetic alloy ribbon constituting the wound core from deteriorating due to the effect of resin pressure. Moreover, since the core sealing body tightly surrounds the entire periphery of the wound core according to its shape and size, the wound core will not vibrate due to external vibrations.
Deterioration of the magnetic properties and damage of the amorphous magnetic alloy ribbon can be prevented.
図面は本発明の製造方法の一実施例を示しており、第１
図および第２図は巻鉄心および鉄心密封体を示す側面断
面図および正面断面図、第３図は静電粉体塗装工程を示
す説明図、第４図は樹脂含浸工程を示す説明図、第５図
は従来の製造方法において用いる巻鉄心を収容するケー
スを示す斜視図である。
１１・・・巻鉄心、１２・・・非晶質磁性合金薄帯、１
３・・・巻枠、１４・・・外周枠、１５・・・端面板、
１６・・・樹脂被膜、１７・・・真空排気用パイプ、Ａ
・・・鉄心密封体。
】２
第２図The drawings show one embodiment of the manufacturing method of the present invention.
2 and 2 are a side sectional view and a front sectional view showing the wound core and the core seal, FIG. 3 is an explanatory view showing the electrostatic powder coating process, FIG. 4 is an explanatory view showing the resin impregnation process, and FIG. FIG. 5 is a perspective view showing a case accommodating a wound core used in the conventional manufacturing method. 11...Wound core, 12...Amorphous magnetic alloy ribbon, 1
3... Winding frame, 14... Outer frame, 15... End plate,
16... Resin coating, 17... Vacuum exhaust pipe, A
...Iron core sealed body. ]2 Figure 2
Claims (2)
す巻枠に前記非晶質磁性合金薄帯を巻回して巻鉄心を形
成するとともに、この巻鉄心の外周部に前記非晶質磁性
合金薄帯に比して広幅の筒形をなす外周枠を被せ、さら
に前記巻枠と外周枠の両端に挟まれた前記巻鉄心の両端
面に環状の端面板を当接配置する工程と、静電粉体塗装
により前記外周枠および端面板の表面に樹脂被膜を形成
し、この樹脂被膜と前記巻枠と外周枠と端面板とで前記
巻鉄心を密封する鉄心密封体を形成する工程と、前記巻
鉄心密封体の周囲に巻線を巻回する工程と、この巻線に
樹脂含浸処理を行なう工程とからなることを特徴とする
樹脂モールド形変圧器の製造方法。(1) The amorphous magnetic alloy ribbon is wound around a cylindrical winding frame that is wider than the width of the amorphous magnetic alloy ribbon to form a wound core, and the outer periphery of the wound iron core is A peripheral frame having a cylindrical shape that is wider than the amorphous magnetic alloy ribbon is placed on the amorphous magnetic alloy ribbon, and annular end plates are applied to both end faces of the wound core sandwiched between the ends of the winding frame and the outer peripheral frame. core sealing, in which a resin coating is formed on the surfaces of the outer peripheral frame and end plate by electrostatic powder coating, and the wound core is sealed between the resin coating, the winding frame, the outer peripheral frame, and the end plate; A method for manufacturing a resin molded transformer, comprising the steps of: forming a core body; winding a winding around the wound core sealed body; and impregnating the winding with a resin. .
密封体の内部を真空にするものである特許請求の範囲第
１項に記載の樹脂モールド形変圧器の製造方法。(2) The method for manufacturing a resin molded transformer according to claim 1, wherein the interior of the core sealed body is evacuated using a pipe provided in the outer peripheral frame during the resin impregnation treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8380286A JPS62241318A (en) | 1986-04-11 | 1986-04-11 | Manufacture of resin molded transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8380286A JPS62241318A (en) | 1986-04-11 | 1986-04-11 | Manufacture of resin molded transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62241318A true JPS62241318A (en) | 1987-10-22 |
Family
ID=13812790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8380286A Pending JPS62241318A (en) | 1986-04-11 | 1986-04-11 | Manufacture of resin molded transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62241318A (en) |
-
1986
- 1986-04-11 JP JP8380286A patent/JPS62241318A/en active Pending
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