JP2879822B2 - Method of manufacturing heat dissipation container for oil-filled electrical equipment - Google Patents
Method of manufacturing heat dissipation container for oil-filled electrical equipmentInfo
- Publication number
- JP2879822B2 JP2879822B2 JP1072240A JP7224089A JP2879822B2 JP 2879822 B2 JP2879822 B2 JP 2879822B2 JP 1072240 A JP1072240 A JP 1072240A JP 7224089 A JP7224089 A JP 7224089A JP 2879822 B2 JP2879822 B2 JP 2879822B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- welding
- fin portion
- shaped
- middle plate
- 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 - Fee Related
Links
Landscapes
- Transformer Cooling (AREA)
- Housings And Mounting Of Transformers (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Description
【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、連続した帯状の薄金属板から波形状の放熱
フイン部（以下、フイン部という）を有する油入電気機
器用放熱容器を製造する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention manufactures a heat dissipation container for an oil-filled electric device having a wave-shaped heat dissipation fin portion (hereinafter referred to as a fin portion) from a continuous band-shaped thin metal plate. How to do it.
＜従来の技術＞ 従来から、連続した帯状の薄金属痛から波形状のフイ
ン部を有する油入電気機器用放熱容器を製造する場合
に、プレス工程の精度、溶接歪、製造工程の省力化等に
関して部分的に数多くの改良が行われて多くの出願があ
る。しかし、部分的に改良が行われても、例えば、製造
工程の省力化の改良が行われても、仕上げ工程の溶接歪
の問題が解決されていなければならない。<Conventional technology> Conventionally, when manufacturing a heat dissipation container for an oil-filled electric device having a wavy fin portion from a continuous band-shaped thin metal pain, accuracy of a pressing process, welding distortion, labor saving of a manufacturing process, and the like. There have been many applications in which a number of improvements have been made in part. However, even if the improvement is partially performed, for example, the labor saving in the manufacturing process is performed, the problem of welding distortion in the finishing process must be solved.
実際の製造方法として、連続した帯状の薄金属板か
ら、最終の波形状のフイン部を有する放熱容器の筒状体
を製作するためには、実際に使用する連続した帯状金属
板そのものが有する歪、プレス工程における加工部のバ
ラツキ、溶接歪、各工程のタクトタイム、材料の供給及
び交換、各工程の使用機器の保守点検及び部品の交換、
各工程で累積された歪及びバラツキを最終の筒状体に組
み立てるときにどのように吸収するのか、全工程のトー
タルの製造時間が果してどれだけ短縮されたか等の数多
くの問題点が総合的に検討されなければならない。As an actual manufacturing method, in order to manufacture a tubular body of a heat radiation container having a final corrugated fin portion from a continuous band-shaped thin metal plate, the distortion of the continuous band-shaped metal plate itself actually used is required. , Variations in the processing section in the pressing process, welding distortion, tact time in each process, supply and replacement of materials, maintenance and inspection of equipment used in each process and replacement of parts,
Numerous problems, such as how the accumulated strain and variation accumulated in each process are absorbed when assembling into the final cylindrical body, and how much the total manufacturing time of all processes has been shortened, etc. Must be considered.
しかし、連続した薄金属板から最終の波形状のフイン
部を有する放熱容器の筒状体を製造するために総合的に
検討されて、具体化され実用化されている製造方法の開
示例は少ない。However, there are few disclosure examples of a manufacturing method that has been comprehensively studied to produce a tubular body of a heat radiation container having a final corrugated fin portion from a continuous thin metal plate, and has been embodied and put into practical use. .
以下、本発明の製造方法の改良点を明確にするため
に、従来公知になっている連続した薄金属板から最終の
波形状のフイン部を有する放熱容器の筒状態を製造する
具体化された方法（例えば、特開昭53−36629）を、第1
0図を参照して説明すると下記のとおりである。Hereinafter, in order to clarify the points of improvement of the manufacturing method of the present invention, it was embodied to manufacture a tubular state of a heat radiation container having a final corrugated fin portion from a conventionally known continuous thin metal plate. Method (for example, JP-A-53-36629)
The description is given below with reference to FIG.
A.帯状金属板を所定の間隔で内外に折曲げてフイン部１
を形成し、 B.このフイン部１の両端を溶着閉塞し、 C.これを適当な長さに切断して中板２とし、 D.この中板２の両側に同長の側板5,5を少し重ねて並
べ、 E.中板２と側板5,5とを保持ローラ6,6で保持することに
より、これらを縦方向に同時に移送しながら定置した溶
接装置8,8によって重合部を溶接し、 F.引続いて溶接後の側板5,5を矯正ローラ7,7で矯正し、 G.フイン部１と中板２とを接合した接合板をフイン部１
を外に３箇所折曲げて両端を溶接して矩形の筒状体と
し、 H.この形成した筒状体の一側端フランジ部に底板を溶接
して油入電気機器用放熱容器を製造する方法である。A. Bend a metal strip inward and outward at predetermined intervals to
B. Both ends of the fin portion 1 are welded and closed, C. This is cut into an appropriate length to form a middle plate 2, D. Side plates 5, 5 of the same length are provided on both sides of the middle plate 2. E. By holding the middle plate 2 and the side plates 5, 5 with the holding rollers 6, 6, the overlapped portion is welded by the fixed welding devices 8, 8 while simultaneously transferring them in the vertical direction. F. Subsequently, the side plates 5, 5 after welding are straightened by straightening rollers 7, 7, and G. The joining plate obtained by joining the fin portion 1 and the middle plate 2 is
Is bent out to three places and welded at both ends to form a rectangular cylindrical body. H. A bottom plate is welded to one side end flange portion of the formed cylindrical body to manufacture a heat dissipation container for oil-filled electric equipment. Is the way.
＜発明が解決しようとする問題点＞ 発明が解決しようとする問題点は、従来技術の問題点
でもあるので、従来技術の問題点を示すと下記のとおり
である。<Problems to be Solved by the Invention> The problems to be solved by the invention are also problems of the prior art, and the problems of the prior art are as follows.
（１）前述した従来技術のＡ乃至Ｃ項に記載した順序の
工程では、フイン部形成工程とその両端の溶着閉塞工程
とが、切断前の続いた１枚の帯状金属板の状態で行われ
るので、製造工程上、制限を受けて生産性が向上しない
問題点がある。(1) In the steps in the order of A to C in the above-described prior art, the fin portion forming step and the step of welding and closing both ends are performed in the state of one continuous strip-shaped metal plate before cutting. Therefore, there is a problem that productivity is not improved due to restrictions in a manufacturing process.
製造工程上から受ける制限の一つは、帯状金属板を供
給して折曲げる供給折曲げ工程における折曲げ速度に対
応した金属板の移動速度と、溶着閉塞工程における溶接
速度に対応した金属板の移動速度とが異なることであ
る。One of the restrictions received from the manufacturing process is that the feeding speed of the metal plate corresponding to the bending speed in the supply bending process of supplying and bending the strip-shaped metal plate, and the movement of the metal plate corresponding to the welding speed in the welding closing process It is different from the moving speed.
他の制限は、放熱容器の仕様の相違により、供給折曲
げ工程に供給する所定幅の金属板及び金型を交換するた
めの中断回数及び中断時間と、溶着閉塞工程の溶接ワイ
ヤの消費、電極の摩耗交換、ノズルのスパッタ除去作業
等のための中断時間とが異なることである。Another limitation is the number of interruptions and the interruption time for replacing a metal plate and a mold having a predetermined width to be supplied to the supply bending process due to a difference in the specification of the heat radiation container, consumption of the welding wire in the welding closing process, and an electrode. Is different from the interruption time for exchanging abrasion of the nozzle, removing the spatter from the nozzle, and the like.
このように、供給折曲げ工程における金属板の移動速
度及び中断時間と、溶着閉塞工程における金属板の移動
速度及び中断時間とが異なり、従来技術のように、これ
らの両工程が一枚の金属板で連続していると、金属板の
移動速度が、いずれか処理速度の遅い工程で制限され、
かつ、いずれか一方の工程が中断すると他方の工程も中
断しなければならないので、生産性が向上しない問題点
がある。As described above, the moving speed and the interruption time of the metal plate in the supply bending process are different from the moving speed and the interruption time of the metal plate in the welding closing process. If it is continuous with the plate, the moving speed of the metal plate is limited in any process with a slow processing speed,
In addition, when one of the steps is interrupted, the other step must also be interrupted, so that there is a problem that productivity is not improved.
また、他の問題点として、帯状金属板は、円筒形に巻
回された連続鋼帯を巻き戻しながら供給されるが、巻き
戻された鋼帯は、直線状態ではなく、ある間隔（３〜5
m）で左右にうねり（波うち）を生じる。そこで、従来
技術のように、供給折曲げ工程と溶着閉塞工程とを、連
続した１枚の金属板の状態で実施しようとすると、両工
程間の金属板の長さに対応するうねりの影響を受けて、
溶着閉塞工程のバラツキが大となり、溶接欠陥が発生し
やすい。As another problem, the strip-shaped metal plate is supplied while unwinding a continuous steel strip wound into a cylindrical shape. However, the unwound steel strip is not in a linear state but at a certain interval (3 to 3). Five
m) causes undulations (waves) on the left and right. Therefore, if the supply bending step and the welding closing step are to be performed in the state of one continuous metal plate as in the prior art, the influence of the undulation corresponding to the length of the metal plate between the two processes is considered. receive,
Variations in the welding closing step are large, and welding defects are likely to occur.
さらに、前述した従来技術では、特別な技術が開示さ
れていないので、通常、「波形状に折曲げてフイン部
１を形成する、（フイン部の両端を閉塞しないと両端
が開いており溶接ができないので、）フイン部の両端を
閉塞する、閉塞したフイン部の両端を溶着する」順序
になると考えられる。この場合、折曲げの設備と閉
塞の設備と溶着の設備とが直列的に配置されることに
なり、この３つの設備の間をフイン部１は少しずつ移動
していると考えられる。この場合、のフイン部の両端
の閉塞を狭い範囲で各フイン部１の根元まで充分に閉塞
しようとすれば、の閉塞工程においても、各フイン部
の内部に中金型を入れておく必要がある。しかし、の
折曲げの設備からの閉塞の設備までフイン部１が移動
する場合には、中金型も移動させなければならないため
に設備が複雑で耐久性が短くなるか、又はの設備で中
金型を再度、挿入しようとすれば、余分の設備及び余分
の処理時間を要することが考えられる。Further, in the above-mentioned conventional technology, no special technology is disclosed, and therefore, usually, “the fin portion 1 is formed by bending in a wavy shape. (If both ends of the fin portion are not closed, both ends are open and welding is not performed. It is considered that the order is to close both ends of the fin and weld both ends of the closed fin. In this case, the bending equipment, the closing equipment, and the welding equipment are arranged in series, and it is considered that the fin unit 1 is gradually moving between these three equipments. In this case, in order to sufficiently close the ends of the fin portions to the roots of the fin portions 1 in a narrow range, it is necessary to insert a middle mold inside each fin portion even in the closing step. is there. However, when the fin unit 1 moves from the bending equipment to the closing equipment, the middle mold must be moved, so that the equipment is complicated and the durability is shortened. Attempting to insert the mold again may require extra equipment and extra processing time.
（２）前述した従来技術のＤ及びＥ項に記載した工程に
おいて、中板２と側板5,5とを溶接するには、中板２と
側板5,5とがずれないように固定する手段が必要であ
る。従来技術のＥ項では、保持ローラ6,6で保持するこ
とより、ずれないようにしているように見受けられる。(2) To weld the middle plate 2 and the side plates 5, 5 in the steps described in the sections D and E of the prior art, means for fixing the middle plate 2 and the side plates 5, 5 so as not to be displaced. is necessary. In the section E of the prior art, it seems that the sheet is held by the holding rollers 6, 6 so as not to shift.
しかし、このＥ項の従来技術を実施しようとしても、
側板5,5及び中板２を保持ローラ6,6の上に置くことがで
きても、側板5,5と中板２とを拘束することができず溶
接時の歪みを小さくすることができないと考えられる。However, even if it is going to implement the prior art of this E term,
Even if the side plates 5, 5 and the middle plate 2 can be placed on the holding rollers 6, 6, the side plates 5, 5 and the middle plate 2 cannot be restrained, and the distortion during welding cannot be reduced. it is conceivable that.
その理由は、中板２は、板全体が波形状のフイン部１
が形成されているので、保持ローラの軸方向の中板２の
両端部を、保持ローラ6,6（上下にあるローラ）の上部
側の保持ローラで押える（拘束する）ことができない。
すなわち、中板２は、端部までフイン部１が形成されて
いるので、そのフイン部１が邪魔になり、上側の保持ロ
ーラ６が中板２を拘束することができず、単に、側板5,
5のみを上下の保持ローラ6,6により、拘束するだけであ
る。すなわち、中板２と側板5,5とがずれないようにす
る手段が開示されていない。さらに、保持ローラ6,6で
側板5,5のみを拘束した状態で行うと、溶接時の歪み
が、どのような理由で小さくなるのかが、全く開示され
ていない。The reason is that the middle plate 2 has a fin portion 1 in which the entire plate has a wavy shape.
Is formed, the both ends of the intermediate plate 2 in the axial direction of the holding roller cannot be pressed (constrained) by the holding roller on the upper side of the holding rollers 6, 6 (upper and lower rollers).
That is, since the fin portion 1 is formed to the end of the middle plate 2, the fin portion 1 is in the way, and the upper holding roller 6 cannot restrain the middle plate 2; ,
Only 5 is restricted by the upper and lower holding rollers 6,6. That is, means for preventing the middle plate 2 and the side plates 5, 5 from shifting is not disclosed. Furthermore, if the operation is performed in a state where only the side plates 5, 5 are restrained by the holding rollers 6, 6, the reason why the distortion during welding is reduced is not disclosed at all.
したがって、従来技術の開示だけでは、保持ローラ6,
6では、中板２と側板5,5とが、ずれないように拘束する
ことができないだけではなく、歪みを小さくすることも
できないという問題点がある。Therefore, the disclosure of the prior art alone, the holding roller 6,
In the case of 6, there is a problem that not only the middle plate 2 and the side plates 5, 5 cannot be restrained so as not to be displaced but also the distortion cannot be reduced.
（３）前述したＦ項の従来技術は、Ｅ項の工程で、ど
のような歪みが発生するのか、このＦ項の工程の矯正
ローラ7,7がどのような機能により、どうして歪みを矯
正できるのか、（特に、この矯正ローラ7,7も保持ロー
ラ6,6と同様に、側板5,5のみしか押えることができない
ので、本当に歪みを矯正できるのか）の点について、問
題点がある。(3) According to the above-described prior art of the item F, what kind of distortion is generated in the process of the item E, and by what function the correcting rollers 7, 7 in the process of the item F can correct the distortion. In particular, there is a problem in that the correction rollers 7, 7 can press only the side plates 5, 5 similarly to the holding rollers 6, 6, so that the distortion can be corrected really.
（４）前述したＧ項の従来技術は、筒状にして両端を溶
接しようとしたときに、曲げ加工の精度のバラツキ及び
溶接変形のために、両端の端部のフランジ部が段違いに
なり、フランジ部があるために矯正も極めて困難であっ
て、タンク密閉のパッキンの密着ができないという問題
点がある。(4) In the prior art of the above-mentioned item G, when trying to weld both ends in a tubular shape, the flange portions at both ends are stepped due to unevenness in bending accuracy and welding deformation, Correction is also extremely difficult due to the presence of the flange portion, and there is a problem that the packing for sealing the tank cannot be adhered.
また、このＧ項の従来技術では、筒状体を形成する全
周長さが長い１枚の中板と側板との長い接合板を、３個
所で折曲げて矩形にしようとするものであるから、まず
第１に折曲げ設備が大型効果になること、第２に全周長
さを３個所で折曲げた後、矩形になった筒状体を設備か
ら搬出しやすくしようとすると、両端部が開くので、そ
れを合わせるための矯正工程が必要となり、作業性が悪
くなるという問題点もある。Further, in the prior art of the item G, a long joining plate of a middle plate and a side plate having a long entire circumferential length forming a cylindrical body is bent at three places to form a rectangle. First, the bending equipment has a large effect, and second, after bending the entire circumference at three locations, it is easy to carry out the rectangular tubular body from the equipment. Since the part is opened, a correction process for matching the part is required, and there is also a problem that workability is deteriorated.
さらに、Ｇ項の従来技術においては、前述したよう
に、通常、帯状金属板は、円筒形に巻回された連続鋼帯
を巻き戻しながら供給されるが、巻き戻された鋼帯は、
直線状態ではなく、ある間隔（３〜5m）で左右にうねり
を生じている。そこで、Ｇ項の工程のように１枚の板
で、筒状に形成しようとすると、帯状金属板の長さが長
くなり、上記うねりの影響を受けて、途中の加工工程の
精度を得ることが困難であるという問題点がある。Furthermore, in the prior art of section G, as described above, the strip-shaped metal plate is usually supplied while unwinding a continuous steel strip wound into a cylindrical shape.
Rather than in a straight line, undulations occur at certain intervals (3 to 5 m). Therefore, if it is attempted to form a tubular shape with one plate as in the process of item G, the length of the strip-shaped metal plate becomes longer, and the accuracy of the processing step in the middle is affected by the undulation. Is difficult.
＜問題点を解決するための手段＞ 本発明の放熱容器の製造方法は、上記の従来技術の問
題点を解決するために、特許請求の範囲に記載した手段
によって構成されるので、ここでは手段の記載を省略
し、第１図乃至第９図を参照して要点を説明する。<Means for Solving the Problems> The method for manufacturing a heat radiation container of the present invention is constituted by the means described in the claims in order to solve the above-mentioned problems of the prior art. Are omitted, and the main points will be described with reference to FIGS. 1 to 9.
（１）本発明は、従来技術のＡ乃至Ｃ項の工程の代り
に、帯上金属板101を、折曲げ閉塞工程の後、すなわち
溶着工程の前に、切断工程で切断することにより、折曲
げ閉塞工程と溶着工程とが独立して進行及び停止するこ
とができるような工程とした。(1) According to the present invention, instead of the steps A to C of the prior art, the band-shaped metal plate 101 is cut in a cutting step after the bending and closing step, that is, before the welding step. The process was such that the bending and closing process and the welding process could proceed and stop independently.
さらに、本発明の製造方法においては、中金型と外金
型とによって波形状に折曲げてフイン部１を形成し、折
曲げ工程の終了時にフイン部の両端1bを閉塞することに
よって、波形状折曲げとフイン部の両端1bの閉塞とを同
時に行う。Further, in the manufacturing method of the present invention, the fin portion 1 is formed by being bent into a wave shape by the middle die and the outer die, and both ends 1b of the fin portion are closed at the end of the bending process, thereby forming a wave. The shape bending and the closing of both ends 1b of the fin portion are performed simultaneously.
（２）本発明は、従来技術のＤ項及びＥ項の代わりに、
つぎのような工程とした。(2) The present invention replaces the terms D and E of the prior art,
The following steps were performed.
中板２と側板5a,5bとのずれを防止するために、中板
２と側板5a,5bとを、片側の側板の両端付近を含む２箇
所以上、両側の側板合計で４箇所以上を仮付溶接して固
定する。In order to prevent the gap between the middle plate 2 and the side plates 5a and 5b, the middle plate 2 and the side plates 5a and 5b should be temporarily divided into two or more places including both ends of one side plate and a total of four or more places on both side plates. Weld and fix.
溶接時の歪の発生によって中板２と側板5a,5bとの浮
きあがりを防止するために、溶接時は、中板２及び側板
5a,5bを停止させて、中板２の両側面に近い上面を加圧
する。In order to prevent the middle plate 2 and the side plates 5a and 5b from floating due to the occurrence of distortion during welding, the middle plate 2 and the side plate
5a and 5b are stopped, and the upper surface close to both side surfaces of the intermediate plate 2 is pressed.
中板２を加圧した後に、中板２と側板5a,5bとを停止
（被溶接物を固定）した状態で溶接装置を移動させて中
板２と側板5a,5bとを溶接する。After pressurizing the middle plate 2, the welding device is moved in a state where the middle plate 2 and the side plates 5a and 5b are stopped (an object to be welded is fixed) to weld the middle plate 2 and the side plates 5a and 5b.
（３）本発明は、従来技術のＦ項のように、発生した歪
みを強制ローラで矯正しようとする考え方ではなく、上
記項で説明した仮付溶接と中板２の加圧とによって、
歪（変形）の発生を事前に軽減している。(3) The present invention is not based on the concept of correcting the generated distortion with a forced roller as in the section F of the prior art, but by the tack welding and the pressing of the intermediate plate 2 described in the above section.
The occurrence of distortion (deformation) is reduced in advance.
（４）本発明は、従来技術のＧ項のように全長の長い１
枚のフイン部１と中板２とを接合した接合板を３箇所で
折曲げて両端を溶接して矩形の筒状体を形成する代わり
に、つぎのような工程とした。(4) According to the present invention, the long 1
Instead of forming a rectangular tubular body by bending a joint plate obtained by joining the fin portions 1 and the intermediate plate 2 at three places and welding both ends, the following process was performed.
フイン部１と中板２とを接合した第１の接合板15aを
フイン部１を外に２個所で折曲げて第１のコの字形接合
板16aを形成する。A first joint plate 15a in which the fin portion 1 and the intermediate plate 2 are joined is bent at two places outside the fin portion 1 to form a first U-shaped joint plate 16a.
同様にして、第２の接合板15bをフイン部１を外に２
個所で折曲げて第２のコの字形接合板16bを形成する。In the same manner, the second bonding plate 15b is
The second U-shaped joining plate 16b is formed by bending at the location.
第１のコの字形接合板16aのパッキン取付側のフラン
ジのパッキン取付面10aと、第２のコの字形接合板16bの
パッキン取付側のフランジのパッキン取付面10bとが、
段違いにならないように、（両接合板のパッキン取付側
のフランジの端部が一致するように）、２個のコの字形
接合板16a,16bを付き合わせて筒状体に仮組立して、２
個のコの字形接合板16a,16bの間を仮付溶接して固定す
る。The packing mounting surface 10a of the flange on the packing mounting side of the first U-shaped connecting plate 16a and the packing mounting surface 10b of the flange on the packing mounting side of the second U-shaped connecting plate 16b are:
The two U-shaped joint plates 16a and 16b are put together and temporarily assembled into a cylindrical body so that the steps do not become uneven (so that the ends of the flanges on the packing mounting side of both joint plates match). 2
The space between the U-shaped joint plates 16a and 16b is fixed by tack welding.
２個のコの字形接合板16a,16bの仮組立によって形成
された２つの接合線16c,16dを溶接する。The two joining lines 16c and 16d formed by the temporary assembly of the two U-shaped joining plates 16a and 16b are welded.
＜実施例＞ 以下、第１図乃至第９図を参照して本発明の放熱容器
の製造方法の各工程の実施例について説明する。<Example> Hereinafter, an example of each step of the method for manufacturing a heat dissipation container of the present invention will be described with reference to FIG. 1 to FIG.
（１）第１工程（第１図） 第１工程は、第１図（Ａ）に示すように、円筒状に巻
かれた薄い鋼帯を巻きほどいた帯状金属板101を、所定
の間隔Ｐ及び所定の高さＨで波形に折曲げて所定の山数
Ｎのフイン部１を形成するとともに、第１図（Ｂ）の拡
大図に示すように、フイン部の両端1b,1bを、図示して
いない波形状折曲げ用中金型とを兼用して、折曲げ工程
の終了時にフイン部の両端1b,1bを閉塞することによっ
て、波形状折曲げ加工とフイン部の両端1b,1bの閉塞加
工とを同時に行う折曲げ閉塞工程である。(1) First Step (FIG. 1) In the first step, as shown in FIG. 1 (A), a strip-shaped metal plate 101 obtained by unwinding a thin steel strip wound in a cylindrical shape is placed at a predetermined interval P A fin portion 1 having a predetermined number of peaks N is formed by bending the fin portion into a waveform at a predetermined height H, and as shown in an enlarged view of FIG. At the end of the bending process, both ends 1b, 1b of the fin portion are closed at the end of the bending process, so that the both ends of the fin portion 1b, 1b are closed. This is a bending / closing step in which the closing processing is performed simultaneously.
第１図（Ａ）に示すフイン部１の長さは、後述する第
１又は第２のコの字形接合板16a及び16bを形成するため
に必要な長さである。これら多数の波形状の所定の間隔
P,高さＨ及び山数Ｎを有する切断板102（102a,102b）を
２個形成する。The length of the fin portion 1 shown in FIG. 1 (A) is a length necessary for forming first or second U-shaped joint plates 16a and 16b to be described later. Predetermined spacing of these many waves
Two cutting plates 102 (102a, 102b) having P, height H, and number of peaks N are formed.
これら２個の切断板のうちの一方の第１の切断板102a
を、前述した第１図（Ａ）に示すような波形状とし、他
方の第２の切断板102bを、第１図（Ｃ）に示すような折
曲げのない両端の平板部分の長さがP0で、それに続く両
側の波形状の部分が高さH1,間隔P1で山数N1のフイン部
で形成され、中央の波形状の部分が高さH2,間隔P2で山
数N2のフイン部で形成されて、波形状の異なる２個の接
合板によって筒状体を形成することができる。One of the two cutting plates, the first cutting plate 102a
Is made into a corrugated shape as shown in FIG. 1 (A), and the other second cutting plate 102b is formed as shown in FIG. 1 (C). in P 0, followed either side of corrugated portion height H 1, it is formed by the fins of the number of peaks N 1 at intervals P 1, a central corrugated portion of the height H 2, mountain interval P 2 is formed by the fins of the number N 2, it is possible to form a tubular body by a waveform shape different two junction plates.
（２）第２工程（第２図） 第２工程は、第２図に示すように、第１工程でフイン
部の両端1b,1bを閉塞した多数のフイン部１をフイン部
１の波打つ方向に所定の長さに切断して第１の切断板10
2a（又は第２の切断板102b）を形成する切断工程であ
る。(2) Second Step (FIG. 2) In the second step, as shown in FIG. 2, a number of fins 1 having closed both ends 1b, 1b of the fin in the first step are undulating directions of the fins 1. And cut to a predetermined length
This is a cutting step for forming 2a (or the second cutting plate 102b).
（３）第３工程（第３図） 第３工程は、第３図に示すように、第２工程で形成し
た第１の切断板102a（又は第２の切断板102b）のフイン
部の両端1b,1bを溶着して、第１の中板2a（又は第２の
中板2b）を製作する溶着工程である。(3) Third Step (FIG. 3) As shown in FIG. 3, both ends of the fin portion of the first cutting plate 102a (or the second cutting plate 102b) formed in the second step, as shown in FIG. This is a welding step of manufacturing the first middle plate 2a (or the second middle plate 2b) by welding 1b, 1b.
本発明の製造方法の第１乃至第３工程において、帯状
金属板101を溶着前に切断することによって、折曲げ閉
塞工程と溶着工程とを独立させたので、処理速度が溶着
工程の処理速度よりも速い折曲げ閉塞工程で折曲げ閉塞
を完了した中板２が、次第に蓄積されていく。この蓄積
された中板２は、帯状金属板101及び金型の交換のため
に、折曲げ閉塞工程が長時間中断している間も、溶着工
程が続行される。In the first to third steps of the manufacturing method of the present invention, the bending and closing step and the welding step are made independent by cutting the band-shaped metal plate 101 before welding, so that the processing speed is lower than the processing speed of the welding step. The intermediate plate 2 which has completed the bending and closing in the fast bending and closing step is gradually accumulated. The welding process of the accumulated middle plate 2 is continued even when the bending and closing process is interrupted for a long time for exchanging the strip-shaped metal plate 101 and the mold.
したがって、本発明の製造方法の第１乃至第３工程に
おいては、折曲げ閉塞工程が長時間中断している間も、
処理速度が遅い溶着工程を中断させることがないので、
生産性を向上させることができる。Therefore, in the first to third steps of the manufacturing method of the present invention, even when the bending and closing step is interrupted for a long time,
Since the welding process with slow processing speed is not interrupted,
Productivity can be improved.
さらに、これらの工程は、少量多種製品、特に、頻繁
に帯状金属板及び金型を変更しなければならない製品の
生産性の向上に役立つ。また、逆に、頻繁に、溶接装置
の消耗部品の交換又はスパッタの除去をしなければなら
ないときも、折曲げ閉塞工程を中断させることなく、溶
着工程の短時間の中断だけで行うことができる。In addition, these steps help to improve the productivity of small multi-products, especially products that require frequent changes in strip metal plates and molds. Conversely, when it is necessary to frequently replace consumable parts of the welding device or remove spatter, the welding process can be performed only for a short time without interrupting the bending and closing process. .
さらに、これらの工程は、巻き戻された帯状金属板10
1のうねりの影響を受けることが少なく、溶着工程の精
度が向上し、溶接欠陥の発生を防止することもできる。Further, these steps are carried out on the unwound metal strip 10.
1 is less affected by the undulation, the accuracy of the welding process is improved, and the occurrence of welding defects can be prevented.
（４）第４工程（第４図） 第４図（Ａ）は、第３工程で製作した第１の中板2a
（又は第２の中板2b）の両側に、略同長のフランジ10を
有する側板5a,5bを下にして、少し重ねて並べる前の中
板２と側板5a,5bとを示す図である。第４工程は、第４
図（Ｂ）に示すように、中板２の両側に、側板5a,5bを
下にして少し重ねて並べる工程である。(4) Fourth Step (FIG. 4) FIG. 4A shows the first middle plate 2a manufactured in the third step.
FIG. 6 is a view showing the middle plate 2 and the side plates 5a and 5b before the side plates 5a and 5b having the flanges 10 of substantially the same length on both sides of the (or the second middle plate 2b) before being slightly overlapped and arranged. . The fourth step is a fourth step.
As shown in FIG. 2B, this is a step of slightly overlapping and arranging the side plates 5a and 5b on both sides of the middle plate 2.
（５）第５工程（第５図） 第５工程は、第５図に示すように、第４工程で重ねて
並べた第１の中板2a（又は第２の中板2b）と側板5a,5b
の片側の両端付近とを２箇所、両側面で合計４個所で仮
付溶接する工程である。この仮付溶接をするときに、中
板２と側板5a,5bとの間に、隙間が生じるときは、次の
第６工程に示すように、中板２の上方から、仮付溶接す
る付近を加圧して、隙間をなくすようにする。(5) Fifth Step (FIG. 5) In the fifth step, as shown in FIG. 5, the first middle plate 2a (or the second middle plate 2b) and the side plate 5a which are overlapped and arranged in the fourth step are arranged. , 5b
This is a step of temporarily welding at two places near one end of each side and a total of four places on both side faces. If there is a gap between the middle plate 2 and the side plates 5a, 5b during the tack welding, as shown in the next sixth step, the vicinity of the tack welding from above the middle plate 2 To eliminate the gap.
また、中板２及び側板5a,5bの長さが大で、次の第６
工程の溶接中に隙間を生じるようなときは、仮付溶接個
所を側板5a,5bの片側の両端付近２個所以外に、その中
間部に１個所以上追加してもよい。Further, the length of the middle plate 2 and the side plates 5a and 5b is large,
If a gap is formed during the welding in the process, one or more temporary welding spots may be added in the middle of the side plates 5a and 5b, in addition to the two spots near both ends on one side.
（６）第６工程（第６図） 第６図（Ａ）は、第５工程で仮付溶接した第１の中板
2a（又は第２の中板2b）と側板5a,5bとを停止した状態
で、中板２の両側面に近い上面を加圧した状態を示す。
この加圧は、エアシリンダのような加圧機構で加圧して
もよいし、重りを置いてもよい。また中板２の重量が大
のときは、特に、加圧機構又は重成りを用いなくても、
中板２の重量により加圧することができる。さらに、加
圧する個所は中板２の両側面の両端を含む４箇所又は６
箇所を加圧することが望ましいが、中板２の両側面を加
圧できる場合は中央で１箇所から加圧してもよい。前述
した第１図（Ｃ）のような波形状の中板２を加圧すると
きは、山の高さがH1の両端４箇所と山の高さH2の中央部
分の両側面２箇所との合計６箇所で加圧することが望ま
しい。(6) Sixth Step (FIG. 6) FIG. 6 (A) shows the first intermediate plate temporarily welded in the fifth step.
This shows a state in which the upper surface close to both side surfaces of the middle plate 2 is pressurized with the 2a (or the second middle plate 2b) and the side plates 5a and 5b stopped.
This pressurization may be performed by a pressurizing mechanism such as an air cylinder, or a weight may be placed. In addition, when the weight of the intermediate plate 2 is large, in particular, without using the pressing mechanism or the overlapping,
Pressurization can be performed by the weight of the middle plate 2. Further, the pressure is applied to four places or six places including both ends of both sides of the middle plate 2.
It is desirable to press the portion, but if both sides of the middle plate 2 can be pressed, the pressure may be applied from one location at the center. When pressurizing the corrugated middle plate 2, such as the first view of the above-described (C), the height of the mountain side and both sides two places of the central portion of the height H 2 of the ends 4 places and mountains of an H 1 It is desirable to pressurize at a total of six locations.
第６工程は、第６図（Ｂ）に示すように、加圧した第
１の中板2a（又は第２の中板2b）と側板5a,5bとを溶接
装置の溶接トーチ8,8を移動させて第１の中板2a（又は
第２の中板2b）と側板5a,5bとにより第１の接合板15a
（又は第２の接合板15b）を製作する側板溶接工程であ
る。In the sixth step, as shown in FIG. 6 (B), the pressurized first middle plate 2a (or second middle plate 2b) and the side plates 5a, 5b are connected to the welding torches 8, 8 of the welding device. The first joining plate 15a is moved by the first middle plate 2a (or the second middle plate 2b) and the side plates 5a, 5b.
(Or a side plate welding process for producing the second bonding plate 15b).
（７）第７工程（第７図） 第７工程は、第７図に示すように、第６工程で製作し
た第１の接合板15a（又は第２の接合板15b）を、フイン
部１が外になるように２箇所で折曲げて、第１のコの字
形接合板16a（又は第２のコの字形接合板16b）を製作す
るコの字形折曲げ工程である。(7) Seventh Step (FIG. 7) In the seventh step, as shown in FIG. 7, the first bonding plate 15a (or the second bonding plate 15b) manufactured in the sixth step is connected to the fin 1 This is a U-shaped bending process in which the first U-shaped joint plate 16a (or the second U-shaped joint plate 16b) is manufactured by bending the two portions so that the outside is outside.
（８）繰り返し工程 上述した第１乃至第７工程を繰り返して、第２の切断
板102b、第２の中板2b、第２の接合板15b及び第２のコ
の字形接合板16bの順に製作する。先に、第１乃至第７
工程で製作した第１のコの字形接合板16aと、このくり
返し工程で製作した第２のコの字形接合板16bとが一対
になって、放熱容器１台分の筒状体を形成する。(8) Repeating Step The first to seventh steps described above are repeated to produce the second cutting plate 102b, the second middle plate 2b, the second joining plate 15b, and the second U-shaped joining plate 16b in this order. I do. First, first to seventh
The first U-shaped bonding plate 16a manufactured in the process and the second U-shaped bonding plate 16b manufactured in the repeating process are paired to form a cylindrical body for one heat radiation container.
第１のコの字形接合板16aと第２のコの字形接合板16b
との波形状及び外形寸法が同一であるときは、第１工程
乃至第７工程で、先に製作されたコの字形接合板と、後
で製作されたコの字形接合板とを、任意に組み合わせて
筒状体を形成することができる。A first U-shaped joint plate 16a and a second U-shaped joint plate 16b
When the corrugations and external dimensions are the same, the U-shaped joint plate manufactured earlier and the U-shaped joint plate manufactured later can be arbitrarily used in the first to seventh steps. A cylindrical body can be formed in combination.
しかし、第１工程で説明したように、第１図（Ａ）に
示すようなフイン部を有する第１の切断板102aと、第１
図（Ｃ）に示すようなフイン部を有する第２の切断板10
2bとから、波形状の異なる第１のコの字形接合板16aと
第２のコの字形接合板16bとを製作して、筒状体を形成
するときは、下記のような繰り返し工程を採用すること
ができる。However, as described in the first step, the first cutting plate 102a having a fin as shown in FIG.
Second cutting plate 10 having a fin as shown in FIG.
When the first U-shaped joint plate 16a and the second U-shaped joint plate 16b having different corrugations are manufactured from 2b to form a cylindrical body, the following repetition process is employed. can do.
第１及び第２工程で、第１の切断板102aと第２の切断
板102bとを交互に製作して、第３工程乃至第７工程と、
それらの繰り返し工程とを同一ラインで交互に行う。In the first and second steps, a first cutting plate 102a and a second cutting plate 102b are manufactured alternately, and a third step to a seventh step;
These repetitive steps are alternately performed on the same line.
上記と同様に、第１工程及び第２工程で、第１の切断
板102aと第２の切断板102bとを交互に製作するが、第３
工程から第７工程までの全部又は一部を第１のラインで
行い、第３工程から第７工程までの繰り返し工程の全部
又は一部を第２ラインで行う。上記の一部に含まれない
工程は、共通の工程で行う。Similarly to the above, in the first step and the second step, the first cutting plate 102a and the second cutting plate 102b are manufactured alternately.
All or a part of the steps from the step to the seventh step is performed on the first line, and all or a part of the repeating steps from the third step to the seventh step is performed on the second line. Steps not included in the above part are performed in common steps.
第１乃至第７工程によって、複数の台数分の第１のコ
の字形接合板16aをまとめて製作し、次に、これらの工
程の繰り返し工程によって同数の台数分の第２のコの字
形接合板16bをまとめて製作する。この製作方法は、第
１のコの字形接合板16aの形状と、第２のコの字形接合
板16bの形状とが大きく異なるとき、各工程のプログラ
ムの切換え回数を少なくすることができる。By the first to seventh steps, a plurality of first U-shaped joint plates 16a for a plurality of units are collectively manufactured, and then the same number of second U-shaped joint plates for the same number are formed by repeating these steps. The board 16b is manufactured together. According to this manufacturing method, when the shape of the first U-shaped joint plate 16a is largely different from the shape of the second U-shaped joint plate 16b, the number of times of switching the program in each step can be reduced.
（７）第８工程（第８図） 第８図（Ａ）は、第７工程で製作した第１のコの字形
接合板16aと繰り返し工程で製作した第２のコの字形接
合板16bとを突き合わせる直前の状態を示す。(7) Eighth Step (FIG. 8) FIG. 8A shows the first U-shaped joint plate 16a manufactured in the seventh step and the second U-shaped joint board 16b manufactured in the repeated step. Shows the state immediately before matching with.
これらの２個のコの字形接合板を突き合わせるときに
は、第８図（Ｂ）に示すように、第１のコの字形接合板
16aのパッキン取付側のフランジのパッキン取付面10a
と、第２のコの字形接合板16bの同じくパッキン取付面1
0bとが段違いにならないように、２個のコの字形接合板
を突き合わせる。When butting these two U-shaped joint plates, as shown in FIG. 8 (B), the first U-shaped joint plate is used.
16a packing mounting surface of packing mounting flange 10a
And the packing mounting surface 1 of the second U-shaped joint plate 16b.
The two U-shaped joint plates are abutted so that 0b does not become uneven.
第８工程は、第８図（Ｃ）に示すように、前述した各
フランジ部が段違いにならないように、第１及び第２の
コの字形接合板16a,16bを突き合わせて仮組立をし、２
個のコの字形接合板の間を仮付け溶接して固定して筒状
体を製作する筒状体組立工程である。In the eighth step, as shown in FIG. 8 (C), the first and second U-shaped joint plates 16a and 16b are abutted and tentatively assembled so that the above-mentioned flange portions do not become uneven. 2
This is a tubular body assembly process in which a tubular body is manufactured by temporarily attaching and fixing between U-shaped joint plates.
（８）第９工程（第９図） 第９工程は、第９図に示すように、第８工程で仮組立
及び仮付け溶接された筒状体の２本の接合線（溶接線）
16c,16dを溶接する筒状体溶接工程である。(8) Ninth Step (FIG. 9) In the ninth step, as shown in FIG. 9, two joining lines (welding lines) of the tubular body temporarily assembled and tack-welded in the eighth step.
This is a cylindrical body welding step for welding 16c and 16d.
（９）第10工程 第９工程で溶接した筒状体の底面となるフランジ部
に、図示していない底板を溶接して、油入電気機器用放
熱容器を製造する。(9) Tenth step A bottom plate (not shown) is welded to a flange portion serving as a bottom surface of the cylindrical body welded in the ninth step, to manufacture a heat dissipation container for oil-filled electric equipment.
＜発明の効果＞ （１）本発明の製造方法の第１工程において、中金型と
外金型とによって波形状に折曲げてフイン部を形成し、
折曲げ工程の終了時にフイン部の両端を閉塞することに
よって、波形状折曲げ加工とフイン部の両端の閉塞加工
とを同時に行わせるようにしたので、折曲げの設備から
閉塞の設備までフイン部の移動とともに中金型も移動さ
せる必要がなく、設備が単純化され、耐久性をそこなう
ことがなく、また余分の設備及び余分の処理時間を節減
することができる。<Effects of the Invention> (1) In the first step of the manufacturing method of the present invention, a fin portion is formed by bending a corrugated shape with a middle mold and an outer mold,
By closing both ends of the fin portion at the end of the bending process, the wavy bending process and the closing process of both ends of the fin portion are simultaneously performed. It is not necessary to move the middle mold along with the movement, the equipment is simplified, the durability is not lost, and extra equipment and extra processing time can be saved.
（２）本発明の製造方法の第１乃至第３工程において、
帯状金属板を、折曲げ閉塞工程の後、すなわち溶接工程
の前に、切断することにより、折曲げ閉塞工程と溶着工
程とが独立して進行及び停止することができるような工
程を採用することによって、折曲げ閉塞工程の処理速度
及び中断と、溶着工程よりも後の工程の処理速度及び中
断とによって、直ちにこれらの両工程がいずれも遅い速
度となるか又は中断してしまうことを防止することがで
きるので、生産性が向上する。(2) In the first to third steps of the manufacturing method of the present invention,
After the bending and closing step, that is, before the welding step, the strip-shaped metal plate is cut, so that the bending and closing step and the welding step can be independently advanced and stopped. This prevents both of these steps from being immediately slowed down or interrupted by the processing speed and interruption of the bending and closing step and the processing speed and interruption of the step after the welding step. Productivity can be improved.
また、上記の工程において、円筒形から巻き戻された
連続鋼帯のうねりの影響が軽減されるので、溶着工程の
バラツキが小さくなり、溶接欠陥の発生をなくすること
ができる。Further, in the above-described process, the influence of the undulation of the continuous steel strip unwound from the cylindrical shape is reduced, so that the variation in the welding process is reduced, and the occurrence of welding defects can be eliminated.
（３）本発明の製造方法の第６工程において、中板と側
板とを仮付け溶接するようにしたので、中板と側板とが
ずれることがない。(3) In the sixth step of the manufacturing method of the present invention, the intermediate plate and the side plate are temporarily welded, so that the intermediate plate and the side plate do not shift.
また、中板を加圧するようにしたので、溶接時の熱影
響によって、中板と側板との浮きあがり、隙間が発生す
ることを防止して、溶接欠陥の発生をなくすとともに、
歪（変形）の発生を防止しているので、歪（変形）の矯
正作業を省略することができ、生産性を向上させること
ができる。In addition, because the middle plate is pressurized, the heat effect during welding prevents the middle plate and the side plate from rising and preventing the occurrence of gaps, eliminating welding defects,
Since the occurrence of distortion (deformation) is prevented, the work of correcting distortion (deformation) can be omitted, and productivity can be improved.
さらに、中板と側板との被溶接物を停止させた状態で
加圧するので、加圧手段が簡単であり、かつ加圧が確実
であって、歪の発生を小さくすることができる。Furthermore, since the pressurization is performed in a state where the workpiece to be welded between the middle plate and the side plate is stopped, the pressurizing means is simple, the pressurization is reliable, and the occurrence of distortion can be reduced.
さらに、溶接装置の溶接トーチを移動させて溶接する
ので、被溶接物よりも溶接トーチの方が小形軽量である
ために、溶接トーチの移動速度（溶接速度）の制御、被
溶接物と溶接トーチ先端との間隔制御（アーク長制御、
溶接線倣い制御）等の応答速度が向上する。Furthermore, since the welding torch of the welding device is moved to perform welding, the welding torch is smaller and lighter than the workpiece, so that the moving speed of the welding torch (welding speed) can be controlled, and the workpiece and the welding torch can be controlled. Distance control with tip (arc length control,
The response speed of welding line scanning control) is improved.
（４）本発明の製造方法の第７工程において、接合板を
２個所で折曲げてコの字形接合板を製作するようにした
ので、設備が大型効果となることを軽減することができ
るとともに、コの字形接合板であるので、折曲げ設備か
らの搬出が容易で、しかも、両端部を合わせる矯正工程
が不要となり、生産性が向上する。(4) In the seventh step of the manufacturing method of the present invention, since the joining plate is bent at two places to produce a U-shaped joining plate, it is possible to reduce the effect of the equipment having a large effect. Since it is a U-shaped joint plate, it is easy to carry it out of the bending equipment, and a straightening step of aligning both ends is not required, thereby improving productivity.
（５）本発明の製造方法の第８工程において、第１のコ
の字形接合板のフランジのパッキン取付面と、第２のコ
の字形接合板のフランジのパッキン取付面とが段違いに
ならないように突き合わせることができるので、フラン
ジ部の極めて困難な矯正工程を省略することができ、生
産性が向上する。また、１台の放熱容器の筒状態を２個
のコの字形接合板を突き合わせて形成しているので、１
枚の接合板を３個所で折曲げて筒状態とする製造方法よ
りも、帯状金属板のうねりの影響、３個所折り曲げによ
る精度のバラツキによる突き合わせ部の大きな段違いの
発生等を防止することができる。(5) In the eighth step of the manufacturing method of the present invention, the packing mounting surface of the flange of the first U-shaped connecting plate and the packing mounting surface of the flange of the second U-shaped connecting plate are not stepped. , It is possible to omit an extremely difficult straightening step of the flange portion, and the productivity is improved. In addition, since the cylindrical state of one heat radiation container is formed by abutting two U-shaped joint plates,
It is possible to prevent the influence of the undulation of the band-shaped metal plate and the occurrence of a large step difference in the abutting portion due to the variation in accuracy due to the bending at three places, as compared with the manufacturing method in which the two joining plates are bent at three places to form a cylindrical state. .
（６）以上は、本発明の製造方法の効果を各工程別に記
載したが、本発明の製造方法の各工程は、互いに関係
し、総合的に見て、設備の低廉化、歪の発生の防止、生
産性の向上にすぐれており、実用価値が大である。(6) Although the effects of the manufacturing method of the present invention have been described for each step, the steps of the manufacturing method of the present invention are related to each other, and when viewed comprehensively, the cost of equipment and the occurrence of distortion can be reduced. It is excellent in prevention and improvement of productivity, and has a great practical value.
第１図乃至第９図は、本発明の放熱容器の製造方法の各
工程における製作品を示す図である。 第１図（Ａ）は、帯状金属板101を波形状に折曲げてフ
イン部１を形成するとともにフイン部の両端を閉塞した
多数のフイン部１を示す図であり、同図（Ｂ）は、フイ
ン部の両端を閉塞した部分の拡大図であり、同図（Ｃ）
は、フイン部の間隔と高さと山の数とが異なる多数のフ
イン部１を示す他の実施例を示す図、第２図は、第１図
（Ａ）で形成した多数のフイン部１を帯状金属板101か
ら切断した切断板102を示す図、第３図は、第２図で形
成した切断板102のフイン部の両端1bを溶着して製作し
た中板２を示す図、第４図（Ａ）は、第３図で製作した
中板２及びその両側面に溶接する側板5a,5bを示す図で
あり、第４図（Ｂ）は、中板２とその下に少し重ねて並
べた側板5a,5bを示す図、第５図は、第４図（Ｂ）で重
ねて並べた中板２と側板5a,5bとの両側付近を仮付溶接
した中板２と側板5a,5bとを示す図、第６図（Ａ）は、
仮付溶接した中板２を上部から加圧した中板２と側板5
a,5bとを示す図であり、同図（Ｂ）は、加圧した中板２
と側板5a,5bとを溶接トーチ８によって溶接中の接合板1
5を示す図、第７図は、第６図（Ｂ）で製作した接合板1
5を、２個所で折曲げて形成したコの字形接合板16を示
す図、第８図（Ａ）は、第７図で製作した第１のコの字
形接合板16aと第２のコの字形接合板16bとを突き合わせ
る前の両接合板を示す図であり、第８図（Ｂ）は、第１
のコの字形接合板16aのフランジのパッキン取付面10aと
第２のコの字形接合板16bのフランジのパッキン取付面1
0bとが段違いにならないように、突き合わせる直前の拡
大図であり、第８図（Ｃ）は、第１及び第２のコの字形
接合板を仮組立した筒状体を示す図、第９図は、第８図
（Ｃ）で仮組立した筒状体の２本の接合線16c,16dを溶
接した筒状体を示す図、第10図は、従来の放熱容器の製
造方法の工程の一部を示す図である。 101……帯状金属板、１……（波形状）フイン部、102,1
02a,102b……切断板、1b……フイン部の両端、2,2a,2b
……中板、5,5a,5b……側板、10…（側板の）フラン
ジ、８……溶接トーチ、15,15a,15b……接合板、16,16
a,16b……コの字形接合板、10a,10b……フランジのパッ
キン取付面、16c,16d……筒状体の接合線（溶接線）、
Ｐ……フイン部の所定の間隔1 to 9 are views showing a product in each step of the method for manufacturing a heat dissipation container of the present invention. FIG. 1A is a diagram showing a number of fins 1 formed by bending a band-shaped metal plate 101 into a corrugated shape to form fins 1 and closing both ends of the fins. FIG. FIG. 4 is an enlarged view of a portion in which both ends of the fin portion are closed, and FIG.
FIG. 2 is a view showing another embodiment showing a large number of fins 1 having different intervals, heights, and the number of peaks of the fins, and FIG. 2 is a view showing a large number of fins 1 formed in FIG. FIG. 3 is a diagram showing a cutting plate 102 cut from a strip-shaped metal plate 101. FIG. 3 is a diagram showing a middle plate 2 manufactured by welding both ends 1b of fin portions of the cutting plate 102 formed in FIG. (A) is a diagram showing the middle plate 2 manufactured in FIG. 3 and side plates 5a and 5b to be welded to both side surfaces thereof, and FIG. FIG. 5 shows the side plates 5a and 5b, and FIG. 5 shows the middle plate 2 and the side plates 5a and 5b in which the vicinity of both sides of the middle plate 2 and the side plates 5a and 5b arranged side by side in FIG. FIG. 6 (A)
The middle plate 2 and the side plate 5 where the tack-welded middle plate 2 is pressed from above.
5A and 5B, and FIG. 6B is a diagram showing a pressurized middle plate 2.
Plate 1 being welded to the side plates 5a and 5b by the welding torch 8
FIG. 7 is a view showing the joint plate 1 manufactured in FIG. 6 (B).
5 is a view showing a U-shaped joint plate 16 formed by bending at two places, and FIG. 8 (A) shows the first U-shaped joint plate 16a and the second U-shaped joint plate 16a manufactured in FIG. FIG. 8B is a diagram showing both joining plates before butting against the V-shaped joining plate 16b, and FIG.
The mounting surface 10a of the flange of the U-shaped connecting plate 16a and the packing mounting surface 1 of the flange of the second U-shaped connecting plate 16b
FIG. 8 (C) is a diagram showing a tubular body in which first and second U-shaped joint plates are temporarily assembled, and FIG. 9 (C) is a ninth embodiment. The figure shows a tubular body obtained by welding the two joining lines 16c and 16d of the tubular body temporarily assembled in FIG. 8 (C), and FIG. 10 shows the steps of a conventional method for manufacturing a heat dissipation container. It is a figure which shows a part. 101 ... strip-shaped metal plate, 1 ... (corrugated) fin, 102,1
02a, 102b: Cut plate, 1b: Both ends of fin, 2, 2a, 2b
... Middle plate, 5, 5a, 5b ... Side plate, 10 ... Flange (of side plate), 8 ... Welding torch, 15, 15a, 15b ... Joint plate, 16, 16
a, 16b: U-shaped joint plate, 10a, 10b: Flange packing mounting surface, 16c, 16d: Joint line (welding line) of cylindrical body,
P: Predetermined interval of the fin
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 省三 大阪府大阪市淀川区田川２丁目１番11号 株式会社ダイヘン内 (72)発明者 白藤 重樹 大阪府大阪市淀川区田川２丁目１番11号 株式会社ダイヘン内 (56)参考文献 特開 昭55−93205（ＪＰ，Ａ) 特開 昭53−126104（ＪＰ，Ａ) 特開 昭53−36629（ＪＰ，Ａ) 特開 昭56−131081（ＪＰ，Ａ) 特開 昭61−71181（ＪＰ，Ａ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Shozo Yamamoto 2-1-1-11 Tagawa, Yodogawa-ku, Osaka-shi, Osaka Dainai Co., Ltd. (72) Shigeki Shirato 2-1-1 Tagawa, Yodogawa-ku, Osaka-shi, Osaka No. 11 Daihen Co., Ltd. (56) References JP-A-55-93205 (JP, A) JP-A-53-126104 (JP, A) JP-A-53-36629 (JP, A) JP-A-56-131081 (JP, A) JP-A-61-71181 (JP, A)
Claims (1)
で波形状に折曲げて多数のフイン部（１）を形成すると
ともに、フイン部の両端（1b）を閉塞する第１工程と、 前記フイン部の両端（1b）を閉塞したフイン部（１）
を、前記帯状金属板（101）のフイン部の波打つ方向で
所定の長さに切断して第１の切断板（102a）を形成する
第２工程と、 前記フイン部の両端（1b）を溶着して第１の中板（2a）
を製作する第３工程と、 前記中板（2a）の両側に、略同長の側板（5a），（5b）
を下にして少し重ねて並べる第４工程と、 前記中板（2a）と前記側板（5a），（5b）とを仮付溶接
する第５工程と、 前記中板（2a）と前記側板（5a），（5b）とを停止した
状態で、前記中板（2a）の両側面に近い上面を加圧し
て、溶接トーチ（８）を移動させて前記中板（2a）と前
記側板（5a），（5b）とを溶接して、第１の接合板（15
a）を製作する第６工程と、 前記第１の接合板（15a）を、前記フイン部（１）が外
になるように２箇所折曲げて、第１のコの字形接合板
（16a）を製作する第７工程と、 前記第１乃至第７の工程を繰り返して第２の切断板（10
2b）から第２の接合板（15b）を製作して、第１のコの
字形接合板（16a）と一対になって放熱容器１台分の筒
状体を形成するための第２のコの字形接合板（16b）を
製作する繰り返し工程と、 前記第１のコの字形接合板（16a）のフランジのパッキ
ン取付面（10a）と、第２のコの字形接合板（16b）のフ
ランジのパッキン取付面（10b）とが段違いにならない
ように、２個のコの字形接合板（16a），（16b）を突き
合わせて仮組立して筒状体を製作する第８工程と、前記
第８工程の仮組立された筒状体の２本の接合線（16
c），（16d）を溶接する第９工程と、 第９工程で溶接した筒状体の底面となるフランジ部に底
板を溶接する第10工程とから成る油入電気機器用放熱容
器の製造方法。1. A belt-shaped metal plate (101) is placed at a predetermined interval (P).
A first step of closing both ends (1b) of the fin portion while forming a large number of fin portions (1) by bending the fin portion into a wave shape, and a fin portion (1) closing both ends (1b) of the fin portion.
A second step of cutting the fin portion of the strip-shaped metal plate (101) into a predetermined length in a waving direction of the fin portion to form a first cut plate (102a), and welding both ends (1b) of the fin portion. And the first middle plate (2a)
And a side plate (5a), (5b) having substantially the same length on both sides of the middle plate (2a).
A fourth step in which the middle plate (2a) and the side plates (5a) and (5b) are temporarily welded to the middle plate (2a) and the side plates (5a) and (5b); 5a) and (5b) are stopped, the upper surface close to both side surfaces of the middle plate (2a) is pressed, and the welding torch (8) is moved to move the middle plate (2a) and the side plate (5a). ), (5b) and the first joint plate (15
A sixth step of manufacturing a), the first joint plate (15a) is bent at two places so that the fins (1) are outside, and a first U-shaped joint plate (16a) is formed. And the first to seventh steps are repeated to form a second cutting plate (10
The second joint plate (15b) is manufactured from 2b), and the second joint plate (16b) is paired with the first U-shaped joint plate (16a) to form a cylindrical body for one heat radiation container. A step of manufacturing a U-shaped joint plate (16b); a packing mounting surface (10a) of a flange of the first U-shaped joint plate (16a); and a flange of a second U-shaped joint plate (16b). An eighth step in which the two U-shaped joining plates (16a) and (16b) are butted and temporarily assembled to produce a cylindrical body so that the packing mounting surface (10b) does not become uneven; The two joining lines (16
c) a method of manufacturing a heat radiating container for oil-filled electrical equipment, comprising: a ninth step of welding (16d); and a tenth step of welding a bottom plate to a flange portion serving as a bottom surface of the tubular body welded in the ninth step. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1072240A JP2879822B2 (en) | 1989-03-24 | 1989-03-24 | Method of manufacturing heat dissipation container for oil-filled electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1072240A JP2879822B2 (en) | 1989-03-24 | 1989-03-24 | Method of manufacturing heat dissipation container for oil-filled electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02251108A JPH02251108A (en) | 1990-10-08 |
| JP2879822B2 true JP2879822B2 (en) | 1999-04-05 |
Family
ID=13483569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1072240A Expired - Fee Related JP2879822B2 (en) | 1989-03-24 | 1989-03-24 | Method of manufacturing heat dissipation container for oil-filled electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2879822B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4954938B2 (en) * | 2008-04-28 | 2012-06-20 | 株式会社ダイヘン | Method for manufacturing transformer case |
| JP5578470B2 (en) * | 2009-09-29 | 2014-08-27 | 株式会社ダイヘン | Method and apparatus for welding cylindrical body and corrugated heat sink |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53126104A (en) * | 1977-04-11 | 1978-11-04 | Kawasaki Yuko Kk | Method of forming corrugated plate for motors* transformers and the like |
| JPS5593205A (en) * | 1979-01-10 | 1980-07-15 | Mitsubishi Electric Corp | Manufacturing method of oil filled electrical apparatus casing |
-
1989
- 1989-03-24 JP JP1072240A patent/JP2879822B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02251108A (en) | 1990-10-08 |
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