JP4407276B2 - Brazing apparatus and brazing method for rotor coil - Google Patents

Brazing apparatus and brazing method for rotor coil Download PDF

Info

Publication number
JP4407276B2
JP4407276B2 JP2003428012A JP2003428012A JP4407276B2 JP 4407276 B2 JP4407276 B2 JP 4407276B2 JP 2003428012 A JP2003428012 A JP 2003428012A JP 2003428012 A JP2003428012 A JP 2003428012A JP 4407276 B2 JP4407276 B2 JP 4407276B2
Authority
JP
Japan
Prior art keywords
brazing
rectangular conductor
foil
length side
side rectangular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2003428012A
Other languages
Japanese (ja)
Other versions
JP2004222493A (en
Inventor
清治 今村
堅 南郷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Systems Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Systems Co Ltd filed Critical Fuji Electric Systems Co Ltd
Priority to JP2003428012A priority Critical patent/JP4407276B2/en
Publication of JP2004222493A publication Critical patent/JP2004222493A/en
Application granted granted Critical
Publication of JP4407276B2 publication Critical patent/JP4407276B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Description

本発明は、タービン発電機等の比較的大型の電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け装置及びロウ付け方法に関する。   The present invention relates to a pair of axial long side rectangular conductors and a pair of circumferential long side rectangular conductors that constitute a rotor coil provided in a rotor of a relatively large electric machine such as a turbine generator. The present invention relates to a brazing apparatus and a brazing method.

一般に、空冷及び水素冷却タービン発電機の界磁巻線に使用する平角導体は、電気導電率を確保し、且つ所定の機械的耐力が要求される。回転子に使用するコイル即ちロータコイルに適用する場合、長期間の回転に耐えられ、且つ巻線としての互いの幾重もの巻線間の絶縁維持も必要となってくる。例えばタービン発電機が10数万キロワットレベルのロータコイルの場合、巻線としての平角導体は連続的に一つの長方形の螺旋状のスパイラルコイルとして構成される。図7(a)及び(b)は、ロータコイルのスパイラル形状を説明する概念図である。図7(a)は回転子にロータコイルの一部を組込む図で、図7(b)はスパイラル状のロータコイルを示す。この長方形のスパイラルコイルは長尺側がロータコイルの回転軸方向( 以下、軸長側という) にあり、短尺側が回転軸とは直角の円周方向( 以下、周長側という) にあるように構成されている。   In general, a rectangular conductor used for a field winding of an air-cooled and hydrogen-cooled turbine generator is required to ensure electrical conductivity and have a predetermined mechanical strength. When applied to a coil used for a rotor, that is, a rotor coil, it is necessary to withstand long-time rotation and to maintain insulation between multiple windings as windings. For example, when the turbine generator is a rotor coil having a level of several hundred thousand kilowatts, the rectangular conductor as the winding is continuously configured as one rectangular spiral coil. FIGS. 7A and 7B are conceptual diagrams illustrating the spiral shape of the rotor coil. FIG. 7A is a view in which a part of the rotor coil is incorporated into the rotor, and FIG. 7B shows a spiral rotor coil. This rectangular spiral coil is configured so that the long side is in the direction of the rotation axis of the rotor coil (hereinafter referred to as the axial length side) and the short side is in the circumferential direction (hereinafter referred to as the peripheral length side) perpendicular to the rotational axis. Has been.

また、スパイラルコイルの接続箇所は、たとえば平角導体の軸長側の直線部であったり、軸長側と周長側で交差する角部( 以下、4 ヶ所の角部を四隅部という) であったりする。このスパイラルコイルの螺旋巻数は13ターン〜24ターンもある。このようなスパイラルコイルを1 ユニットとすると、一つの発電機の回転子には同一サイズのユニットが2式あり、サイズの異なるユニットは8種類で計8ユニット×2式で16ユニットもあって、これが回転子の中に組み込まれている。これらの接続箇所の接続方法は、通常手作業にてロウ付けされている。このロウ付け方法としては、ガスロウ付けであったり、高周波加熱ロウ付けであったりする。一般には加熱源が大きく、安定して短時聞でロウ付けが可能な高周波加熱ロウ付けが多く用いられている。   In addition, the connection point of the spiral coil is, for example, a straight line portion on the axial length side of a flat conductor, or a corner portion that intersects the axial length side and the circumferential length side (hereinafter, the four corner portions are referred to as four corner portions). Or The spiral coil has 13 to 24 turns. If such a spiral coil is one unit, there are two types of units of the same size in the rotor of one generator, and there are eight units of different sizes, a total of 8 units x 2 types, 16 units, This is built into the rotor. The connection method of these connection locations is usually brazed manually. This brazing method may be gas brazing or high-frequency heating brazing. In general, a high-frequency heating brazing that has a large heating source and can be brazed stably and in a short time is often used.

このロウ付けの接続部の継手の種類は、上記に示した直線部の場合は図8(a)に示すように突合せロウ付けであったり、図8の(b),(c),(d),(e),(f)であったりする(例えば特許文献1参照)。また、四隅部の場合は、図8(g)に示すような突合せになる。
ここで、平角導体の軸長側の直線部のロウ付けの場合は、基本的には接合箇所の平角導体の板幅は同じ寸法同士であるが、四隅部のロウ付けの場合は、軸長側の板幅と周長側の板幅が同じであるときと、周長側の板幅がより大きいときがある。周長側の板幅がより大きい理由は、電磁界電流の効率を上げるためになされるが、そのとき電磁界電流で発熱しやすい部分を幅広にして冷却性をよくすることにある。すなわち、四隅ロウ付けはこのように電磁界電流の効率を上げるために必要となる、
四隅ロウ付けでは突合せ部の直角内側コーナー部のロウ付け部は切り欠きをなくすために円弧状のフィレットが形成されていることが重要である。
In the case of the straight portion shown above, the type of joint of the brazed connecting portion is butt brazing as shown in FIG. 8 (a), or (b), (c), (d ), (E), and (f) (see, for example, Patent Document 1). In the case of the four corners, the matching is as shown in FIG.
Here, in the case of brazing a straight portion on the axial length side of a flat conductor, the plate width of the flat conductor at the joint is basically the same size, but in the case of brazing at the four corners, the axial length There are cases where the plate width on the side and the plate width on the circumferential side are the same, and the plate width on the circumferential side is larger. The reason why the plate width on the circumferential side is larger is to increase the efficiency of the electromagnetic current, but at this time, the portion that is likely to generate heat by the electromagnetic current is widened to improve the cooling performance. That is, the four corner brazing is necessary to increase the efficiency of the electromagnetic current in this way.
In the four-corner brazing, it is important that an arc-shaped fillet is formed in the brazing portion at the right-angled inner corner portion of the butt portion in order to eliminate the notch.

また、平角導体は通常無酸素銅系の材質が使用される。ロウ材は銀ロウ、またはりん銅ロウが使用される。
四隅ロウ付けの従来の銀ロウ付け方法は、突合せ面にあらかじめフラックスを塗布し、突合せ部に銀ロウの箔を突合せ面のサイズより少し大きいサイズのものを挟んでおく。平角導体を加熱して銀ロウが溶融した段階で、人手により差しロウ補充が行われ適正な余盛形成( 凸)を行う。余盛形成は突合せ部の突合せ線にロウの溶け落ちのためにへこみ( 凹) が出来ないようにするためである。また同時に円弧状のフィレットの形成も行う。もちろんロウ付け部の余盛部は後工程で平坦な状態にグラインダーなどで仕上げられる。
The rectangular conductor is usually made of an oxygen-free copper-based material. As the brazing material, silver brazing or phosphor copper brazing is used.
In the conventional silver brazing method of four-corner brazing, a flux is applied to the abutting surface in advance, and a silver brazing foil having a size slightly larger than the size of the abutting surface is sandwiched between the abutting portions. When the rectangular conductor is heated and the silver wax is melted, the solder is replenished manually to form an appropriate overfill (convex). The extra formation is to prevent dents (recesses) from being formed in the butt line of the butt part due to melting of the wax. At the same time, an arcuate fillet is formed. Of course, the extra portion of the brazing portion is finished in a flat state by a grinder or the like in a later process.

図9は、従来の高周波加熱インダクタで加熱するときの平角導体の突合せ状態を示す図である。図示していないが、実際には高周波加熱インダクタ100と軸長側平角導体101及び周長側平角導体102との間に薄い絶縁板を挟んでおく。さらに図示していないが高周波加熱インダクタ100には平角導体の真下で、かつ突き合せ線103に沿って左右に主たる加熱源となる積層コアが配置されている。   FIG. 9 is a diagram showing a butt state of flat conductors when heated by a conventional high-frequency heating inductor. Although not shown, actually, a thin insulating plate is sandwiched between the high-frequency heating inductor 100 and the axial length side rectangular conductor 101 and the circumferential length side rectangular conductor 102. Further, although not shown, the high-frequency heating inductor 100 is provided with a laminated core which is a main heating source right and left along the butt line 103 just below the flat conductor.

図10は、従来の高周波加熱の人手による四隅ロウ付けの作業方法を示すものである。図10(a)は平角導体と高周波加熱インダクタとロウ材のセット方法を示す図である。先ず、図示する高周波加熱インダクタ100の上面に絶縁と耐熱性のあるマイカ( 雲母) の薄板材105を敷く。そしてその上に軸長側平角導体101と周長側平角導体102を載せてその端面と側面とを突合せる。そして、突合せ部106において段差が生じないように平坦度を確認する。ここで正確に位置合わせする方法としては、図10(b)に示す軸長側平角導体101の側面端部は軸長側固定治具107に、また周長側平角導体102の側面端部は周長側固定治具108にそれぞれ突き当てる。そして、さらにそれぞれ反対側の側面端部を軸長側固定治具109と周長側固定治具110で押し当てて平角導体の周長側と軸長側を互いに直角となるようにする。次に、軸長側押し当て治具111及び周長側押し当て治具112で平角導体の上面を押さえこむ。その後、一旦軸長側固定治具109、軸長側押し当て治具111及び周長側固定治具110、周長側押し当て治具112をゆるめて周長側の端面と軸長側の端面との突き合せ部に銀ロウの箔(薄板状)113を差しこむ。そして再び突き合せ面をしっかりと軸長側固定治具109、軸長側押し当て治具111及び周長側固定治具110、周長側押し当て治具112で押さえこむ。このときフラックスは位置合わせする前に、あらかじめ平角導体端面に塗布しておく。   FIG. 10 shows a conventional method for brazing four corners manually by high frequency heating. FIG. 10A is a diagram showing a method for setting a rectangular conductor, a high-frequency heating inductor, and a brazing material. First, a thin plate material 105 of mica (mica) having insulation and heat resistance is laid on the upper surface of the illustrated high-frequency heating inductor 100. Then, the axial long side rectangular conductor 101 and the circumferential long side rectangular conductor 102 are placed thereon, and the end face and the side face are brought into contact with each other. And flatness is confirmed so that a level | step difference may not arise in the butt | matching part 106. FIG. Here, as an accurate alignment method, the side end of the axial length side rectangular conductor 101 shown in FIG. 10B is connected to the axial length side fixing jig 107, and the side end of the circumferential length side rectangular conductor 102 is It abuts against the peripheral side fixing jig 108, respectively. Further, the opposite side end portions are pressed by the axial length side fixing jig 109 and the circumferential length side fixing jig 110 so that the circumferential length side and the axial length side of the rectangular conductor are perpendicular to each other. Next, the upper surface of the rectangular conductor is pressed by the axial length side pressing jig 111 and the circumferential length side pressing jig 112. Thereafter, the axial length side fixing jig 109, the axial length side pressing jig 111, the circumferential length side fixing jig 110, and the circumferential length side pressing jig 112 are loosened once, and the circumferential length side end face and the axial length side end face A silver wax foil (thin plate shape) 113 is inserted into the butt portion. Then, the abutting surface is firmly pressed by the shaft length side fixing jig 109, the shaft length side pressing jig 111, the circumferential length side fixing jig 110, and the circumferential length side pressing jig 112 again. At this time, the flux is previously applied to the end face of the rectangular conductor before positioning.

つぎに、図10(a)において加熱時のロウ付けについて説明する。加熱時積層コア114を中心に熱く赤味を帯びてきて突き合せ部106全体が加熱されロウ付けされる。このときロウ付け作業者は、突き合せ部106付近全体の赤味をみて高周波加熱の電気出力をオン・オフして加熱温度を調節しながらロウの溶け状態を確認し、差しロウ115にて補充を行い適度な余盛の形成を行う。
特開平11−168845号公報(第2頁〜第4頁、図2〜図11)
Next, brazing during heating will be described with reference to FIG. When heated, the laminated core 114 is heated and reddish, and the entire butt 106 is heated and brazed. At this time, the brazing operator confirms the melting state of the brazing while adjusting the heating temperature by turning on / off the electric output of the high frequency heating by looking at the reddish color in the vicinity of the butting portion 106 and replenishing with the soldering row 115. To form an appropriate surplus.
JP-A-11-168845 (2nd to 4th pages, FIGS. 2 to 11)

しかしながら、上記従来例にあっては、軸長平角導体及び周長平角導体のロウ付けにおいて人手によるロウ付け作業を行うようにしているので、高周波加熱の電気出力のオン・オフにより平角導体の突き合わせ部付近の加熱状態、すなわち表面上の赤みを見て温度状態を推測し、さらには突き合わせの直角部のロウのフィレットの形成状態や突き合わせ部の凹みが発生しないように差しロウの補充などを行う必要があり、これらの作業を短時間で行う必要があるため熟練を要するという未解決の課題がある。
しかも、上記のような人手によるロウ付け方法の場合、作業者によってロウの余盛りの量にバラツキがあり、必要以上の銀ロウ材を供給したりして、ロウの広がり面積や余盛高さの増加につながり後工程での余盛のグラインダなどによる仕上げ作業工数の増加の原因にもなるという未解決の課題もある。
However, in the above conventional example, since the brazing operation is manually performed in brazing the long rectangular rectangular conductor and the long circumferential rectangular conductor, the rectangular conductor is abutted by turning on and off the electric output of the high frequency heating. Estimate the temperature state by looking at the heating state in the vicinity of the part, that is, the redness on the surface, and refilling the soldering so as to prevent the formation of the fillet of the wax at the right angle part of the butt and the dent of the butt part. There is a need, there is an unsolved problem that it takes because skill was Ru need to perform these tasks in a short period of time.
Moreover, in the case of the manual brazing method as described above, there is a variation in the amount of extra brazing by the operator, and by supplying more silver brazing material than necessary, the spreading area and extra height of the brazing There is also an unsolved problem that it leads to an increase in the number of finishing work steps due to a surplus grinder in the subsequent process.

さらに、高周波インダクタの上面に平角導体が配置されて固定治具で位置決めされているので、上面から押さえる治具は強い力で押さえるとインダクタ自身のフレームが銅製であるので、容易に塑性変形を起こし、被加熱物とインダクタとの間隔が不均一となり、その結果被加熱物の温度分布の差、すなわち突き合わせ線上、温度が高い箇所と低い箇所とが存在する温度の不均一分布を呈することになる。これと同時に突き合わせ部には段差が発生し易くなるという未解決の課題もある。特に、インダクタにおいて、被加熱物とインダクタの接触面同士の間隔が不均一となった場合、つまり接触面同士の間隔のバラツキすなわち差が0.3mm以上異なってくると加熱時の被加熱物の赤みの違いが肉眼でもはっきりと分かるようになる。赤みの違いは結果的には温度差であるので、所定の赤みになるまでには被加熱部の各位置において時間差を生じることになり、これは銀ロウが溶けてからのロウ付け時間差となる。すなわち、被加熱物の各位置においてロウが溶け落ちる部分と、まだ溶けたばかりの部分との差となってくる。勿論溶け落ちそうな部分は人手でロウの補充により突き合わせ部の凹みが出来ないように仕上げていることは言うまでもない。このロウ付け部は発電機の回転子として常時回転する部分で十分な耐力が要求される箇所なので、ロウ付け部の凹みは、切欠き効果となり破損、焼損につながる原因にもなり許されない。   Furthermore, since a rectangular conductor is placed on the upper surface of the high-frequency inductor and is positioned with a fixing jig, if the jig pressing from the upper surface is pressed with a strong force, the inductor's own frame is made of copper, which easily causes plastic deformation. The distance between the object to be heated and the inductor becomes non-uniform, and as a result, the difference in temperature distribution of the object to be heated, that is, the non-uniform distribution of the temperature where there are high and low temperatures on the butt line. . At the same time, there is an unsolved problem that a step is likely to occur at the abutting portion. In particular, in the inductor, when the distance between the contact surfaces of the object to be heated and the inductor becomes uneven, that is, when the variation in the distance between the contact surfaces, that is, the difference is different by 0.3 mm or more, The difference in redness can be clearly seen with the naked eye. Since the difference in redness is a temperature difference as a result, a time difference occurs at each position of the heated part until the predetermined redness is reached, which is a difference in brazing time after the silver solder melts. . That is, there is a difference between the portion where the wax melts at each position of the object to be heated and the portion just melted. Of course, it goes without saying that the parts that are likely to melt away are finished so that the dents of the butted parts cannot be made manually by refilling the wax. Since this brazing part is a part that always rotates as a rotor of the generator and requires a sufficient proof stress, the dent in the brazing part is not allowed because it becomes a notch effect and may cause damage and burnout.

また、インダクタと被加熱物との間隔を一定に保つために、インダクタが変形しないように絶縁エポキシガラスの板などで支えて固定したり、あるいはすぐ周囲を剛性のある筐体で固定したりすれば、その部分は固定されるが、最も重要な積層コアの部分とロウ付けの突き合わせ線の部分が固定されなければやはり突き合わせ部の段差が発生し易い。ここで、積層コアや突き合わせ部の直接的固定は、加熱時赤熱されるので、絶縁エポキシガラス板では耐熱温度が低いため容易に焼損してしまう。勿論、導電性金属物による固定は不可能であることはいうまでもない。また、比較的距離を離して周囲に金属枠を使うこともあるが、この場合、高周波電力の電磁誘導により金属枠が加熱されたり、本来の被加熱部の加熱効率が落ちて加熱時間が延びてしまうなど、やむを得ない場合を除いてあまり使われない。   Also, in order to keep the distance between the inductor and the object to be heated constant, it is supported by an insulating epoxy glass plate or the like so that the inductor is not deformed, or is immediately fixed by a rigid housing. For example, the portion is fixed, but if the most important laminated core portion and brazed butt line portion are not fixed, a step of the butt portion is likely to occur. Here, the direct fixing of the laminated core and the butted portion is red-heated during heating, so that the insulating epoxy glass plate is easily burned out because the heat-resistant temperature is low. Of course, needless to say, fixing with a conductive metal object is impossible. In some cases, a metal frame is used at a relatively long distance. In this case, the metal frame is heated by electromagnetic induction of high-frequency power, or the heating efficiency of the original heated part is reduced and the heating time is extended. It is rarely used unless it is unavoidable.

さらに、加熱温度をロウ付け時の被加熱物の赤味から推測すること自体、熟練者の経験的な感に頼っていることになり、作業者の個人差によるロウ付け品質のバラツキが起こるという可能性もある。
また、上記したようにインダクタと平角導体との間には絶縁用のマイカを間に挟んでいるが、ロウ付け終了時に、被加熱物をインダクタから取り外そうとするとマイカが被加熱物のロウ付け部に付着してしまいその都度マイカを剥がして、もとのインダクタの上に配置し直さなければならないことが頻繁に発生する。また、繰り返しロウ付けすると次第にマイカがボロボロと薄く剥がれ新しいマイカと交換しなければないないという未解決の課題もある。
Furthermore, guessing the heating temperature from the redness of the object to be heated at the time of brazing itself means that it depends on the experience of the skilled worker, and there will be variations in brazing quality due to individual differences among workers. There is a possibility.
In addition, as described above, the insulating mica is sandwiched between the inductor and the flat conductor, but at the end of brazing, if the object to be heated is removed from the inductor, the mica will be soldered to the object to be heated. It frequently occurs that the mica is attached to the attachment portion and must be removed and repositioned on the original inductor each time. In addition, there is an unsolved problem that the mica gradually peels off after repeated brazing and must be replaced with new mica.

そこで、本発明は、上記従来例の未解決の課題に着目してなされたものであり、軸長側及び周長側の平角導体のロウ付けを安定した温度制御で、人手による煩わしい作業を行うことなく確実に行うことができるロータコイルのロウ付け装置及び方法を提供することを目的としている。
また、本発明は、ロウ付け位置の突き合わせ部に段差がなく、軸長側と周長側の平角導体が直角をなす内側角部(内側隅部)にロウのフィレットを形成することができ、且つロウ付け位置での突き合わせ線上のどの位置においても余盛りを形成することがことができるロータコイルのロウ付け装置及び方法を提供することを目的としている。
Accordingly, the present invention has been made paying attention to the unsolved problems of the above-described conventional example, and performs manual labor with stable temperature control of brazing of the rectangular conductor on the axial length side and the peripheral length side. It is an object of the present invention to provide a rotor coil brazing apparatus and method that can be reliably performed without any problems.
In the present invention, there is no step at the butting portion of the brazing position, and a braille fillet can be formed at the inner corner (inner corner) where the rectangular conductor on the axial length side and the circumferential length side make a right angle, In addition, an object of the present invention is to provide a rotor coil brazing apparatus and method capable of forming a surplus at any position on the butt line at the brazing position.

上記目的を達成するために、請求項1に係るモータコイルのロウ付け装置は、電機機器の回転子に設けられたロータコイルの四隅をロウ付けするロータコイルのロウ付け装置において、積層コアと水冷導電性パイプとで構成される高周波加熱インダクタ本体を当該積層コアを平坦面に臨ませて固定保持した高周波加熱インダクタと、該高周波加熱インダクタの平坦面上に配設された絶縁・耐熱用分離板と、前記ロータコイルを構成する軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置にロウ箔を装着するロウ箔装着装置と、前記ロウ箔装着装置でロウ箔を装着した軸長側平角導体及び周長側平角導体を互いのロウ箔で接合させ、その接合位置が前記絶縁・耐熱用分離板上となるように位置決め保持する位置決め保持機構と、前記軸長側平角導体及び周長側平角導体の突き合わせ位置近傍を上方から押圧する押圧機構と、前記軸長側平角導体及び周長側平角導体のロウ箔接合位置の温度を計測する温度計測手段と、該温度計測手段で計測した温度情報が入力される前記高周波加熱インダクタ本体に高周波電力を供給する高周波加熱電源制御手段とを備えたことを特徴としている。 In order to achieve the above object, a brazing apparatus for a motor coil according to claim 1 is a brazing apparatus for brazing a rotor coil that brazes four corners of a rotor coil provided in a rotor of an electric machine. A high-frequency heating inductor comprising a conductive pipe and a high-frequency heating inductor body fixedly held with the laminated core facing the flat surface, and an insulating / heat-resistant separating plate disposed on the flat surface of the high-frequency heating inductor When the wax foil mounting apparatus for mounting a wax foil brazing position that perpendicularly abutting one another in the axial side flat conductor and the circumferential length side rectangular conductor constituting the rotor coil, a wax foil in the row foil mounting device attached The axial length side rectangular conductor and the circumferential length side rectangular conductor are joined with each other by brazing foil, and the positioning is maintained so that the joining position is on the insulating / heat-resistant separating plate. Measure the temperature of the mechanism, the pressing mechanism that presses the vicinity of the abutting position of the long shaft rectangular conductor and the long rectangular conductor from above, and the temperature of the solder foil joining position of the long flat rectangular conductor and the long rectangular conductor. It is characterized by comprising temperature measuring means and high-frequency heating power supply control means for supplying high-frequency power to the high-frequency heating inductor body to which temperature information measured by the temperature measuring means is input.

この請求項1に係る発明では、高周波加熱インダクタの平坦面に積層コアを臨ませ、この平坦面に絶縁・耐熱用分離板が配設される。ロータコイルを構成する軸長側平角導体及び周長側平角導体の夫々のロウ付け位置にロウ箔装着装置で、例えばコ字状のロウ箔を装着してから軸長側平角導体及び周長側平角導体のロウ箔を接合させ、その接合位置が絶縁・耐熱用分離板上となるように位置決め保持機構で位置決め保持すると共に、押圧機構で上方から押圧することにより、軸長側平角導体及び周長側平角導体のロウ付け位置に段差を生じることなく平坦面とすると共に、積層コアとの間隔を一定間隔とすることができる。この状態で、ロウ箔接合位置の温度を温度計測手段で計測しながら高周波加熱電源制御手段で高周波加熱インダクタ本体に高周波電力を供給することにより、ロウ付け位置を所定温度に維持しながらロウ付け位置の均一な加熱を行って高品質のロウ付けを行うことができ、熟練を要することなく正確なロウ付けを行うことができる。   In the first aspect of the present invention, the laminated core faces the flat surface of the high-frequency heating inductor, and the insulating / heat-resistant separating plate is disposed on the flat surface. For example, after installing a U-shaped brazing foil at the brazing position of each of the long axis rectangular conductor and the long rectangular conductor constituting the rotor coil, the long axial rectangular conductor and the long side By fixing the brazing foil of the flat rectangular conductor and positioning and holding it with the positioning and holding mechanism so that the bonding position is on the insulating / heat-resistant separator, and by pressing from above with the pressing mechanism, A flat surface can be formed without causing a step at the brazing position of the long side rectangular conductor, and the distance from the laminated core can be constant. In this state, the brazing position is maintained while maintaining the brazing position at a predetermined temperature by supplying high frequency power to the high frequency heating inductor body by the high frequency heating power source control means while measuring the temperature of the brazing foil joining position by the temperature measuring means. Thus, high-quality brazing can be performed by performing uniform heating, and accurate brazing can be performed without requiring skill.

また、請求項2に係るロータコイルのロウ付け装置は、電機機器の回転子に設けられたロータコイルの四隅をロウ付けするロータコイルのロウ付け装置において、積層コアと水冷導電性パイプとで構成される高周波加熱インダクタ本体を当該積層コアを平坦面に臨ませて固定保持した高周波加熱インダクタと、該高周波加熱インダクタの平坦面上に配設された絶縁・耐熱用分離板と、前記ロータコイルを構成する軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置にロウ箔を装着するロウ箔装着装置と、前記ロウ箔装着装置でロウ箔を装着した軸長側平角導体及び周長側平角導体を互いのロウ箔で接合させ、その接合位置が前記絶縁・耐熱用分離板上となるように位置決め保持する位置決め保持機構と、該位置決め保持機構で位置決め保持された互いのロウ箔の接合位置にロウ棒を配置するロウ棒配置装置と、前記軸長側平角導体及び周長側平角導体の突き合わせ位置近傍を上方から押圧する押圧機構と、前記軸長側平角導体及び周長側平角導体のロウ箔接合位置の温度を計測する温度計測手段と、該温度計測手段で計測した温度情報が入力される前記高周波加熱インダクタ本体に高周波電力を供給する高周波加熱電源制御手段とを備えたことを特徴としている。 A rotor coil brazing device according to claim 2 is a rotor coil brazing device that brazes four corners of a rotor coil provided in a rotor of an electrical equipment, and includes a laminated core and a water-cooled conductive pipe. A high-frequency heating inductor body in which the multilayer core is fixed and held with the laminated core facing the flat surface, an insulating / heat-resistant separating plate disposed on the flat surface of the high-frequency heating inductor, and the rotor coil a row foil mounting apparatus for mounting a row foil each other at right angles butt that brazing position in the axial side flat conductor and the circumferential length side rectangular conductor constituting axial length side rectangular conductor fitted with a brazing foil in the row foil mounting device And a positioning holding mechanism that positions and holds the peripheral long side rectangular conductors with each other with brazing foil and positions the bonding position on the insulating / heat-resistant separating plate, and the positioning A brazing rod arrangement device that arranges a brazing rod at the joining position of the brazing foils positioned and held by the holding mechanism, and a pressing mechanism that presses the vicinity of the abutting position of the long shaft rectangular conductor and the long rectangular conductor from above. Temperature measuring means for measuring the temperature of the brazing foil joining position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, and high frequency power to the high frequency heating inductor body to which temperature information measured by the temperature measuring means is input. A high-frequency heating power supply control means for supplying is provided.

この請求項2に係る発明では、請求項1に係る発明の作用に加えて、ロウ箔装着装置で、例えばコ字状のロウ箔を装着してから軸長側平角導体及び周長側平角導体のロウ箔を接合させ、その接合位置が絶縁・耐熱用分離板上となるように位置決め保持機構で位置決め保持すると共に、さらに必要に応じて位置決め保持された互いのロウ箔の接合部にロウ棒配置装置でロウ棒を配置させ、押圧機構で上方から押圧することにより、軸長側平角導体及び周長側平角導体のロウ付け位置に段差を生じることなく平坦面とすると共に、積層コアとの間隔を一定間隔とすることができる。この状態で、ロウ箔接合位置の温度を温度計測手段で計測しながら高周波加熱電源制御手段で高周波加熱インダクタ本体に高周波電力を供給することにより、ロウ付け位置を所定温度に維持しながらロウ付け位置の均一な加熱を行って高品質のロウ付けを行うことができると共に、ロウ箔の接合部にロウ棒を配置するので、このロウ棒によって余盛り高さを調節することができ、熟練を要することなく正確なロウ付けを行うことができる。   In the invention according to claim 2, in addition to the action of the invention according to claim 1, the axial length side rectangular conductor and the circumferential length side rectangular conductor after the U-shaped brazing foil is mounted by the brazing foil mounting apparatus, for example. The brazing foil is joined, and it is positioned and held by the positioning and holding mechanism so that the joining position is on the insulating / heat-resistant separating plate, and if necessary, the brazing rod is attached to the joined portion of the brazing foils. By arranging the brazing rod with the placement device and pressing from above with the pressing mechanism, the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor is made flat without causing a step, and with the laminated core The interval can be a constant interval. In this state, the brazing position is maintained while maintaining the brazing position at a predetermined temperature by supplying high frequency power to the high frequency heating inductor body by the high frequency heating power source control means while measuring the temperature of the brazing foil joining position by the temperature measuring means. It is possible to perform high-quality brazing by performing uniform heating, and a brazing rod is arranged at the joint of the brazing foil, so that the extra height can be adjusted by this brazing rod and skill is required. Accurate brazing can be performed without any problem.

さらに、請求項3に係るロータコイルのロウ付け装置は、請求項1又は2に係る発明において、前記軸長側平角導体及び前記周長側平角導体の突合せ位置をロウ付けした後のロウ付け部を強制的に空冷する強制空冷手段を備えたことを特徴としている。
この請求項3に係る発明では、ロウ付け終了直後に、強制空冷手段によりロウ付け部を冷却するので、高品質のロウ付けを行うことができると共に、ロウ付け作業時間を短縮することができる。
Furthermore, the brazing device for a rotor coil according to claim 3 is the brazing part after brazing the butting positions of the axial length side rectangular conductor and the circumferential length side rectangular conductor in the invention according to claim 1 or 2. A forced air cooling means for forcibly cooling the air is provided.
In the invention according to claim 3, since the brazing portion is cooled by the forced air cooling means immediately after the brazing is completed, high-quality brazing can be performed and the brazing work time can be shortened.

さらにまた、請求項4に係るロータコイルのロ付け装置は、請求項3の発明において、前記強制空冷手段は、前記軸長側平角導体及び前記周長側平角導体のロウ付け位置でのロウ付け部において、ロウ付け終了直後に直ちにロウ付け部を強制空冷するガスノズル機構を備えていることを特徴としている。
この請求項4に係る発明では、ガスノズル機構でロウ付け部を強制空冷するので、強制空冷を確実に行うことができる。
Furthermore, b c with apparatus of the rotor coil according to claim 4 is the invention of claim 3, wherein the forced air cooling means includes a row of brazing position of the axial length side flat conductor and the circumference-side flat conductor The brazing part is provided with a gas nozzle mechanism that forcibly air-cools the brazing part immediately after the brazing is completed.
In the invention according to the fourth aspect, the brazed portion is forcibly air-cooled by the gas nozzle mechanism, so that forced air-cooling can be reliably performed.

なおさらに、請求項5に係るロータコイルのロウ付け装置は、請求項1乃至4の何れか1つに係る発明において、前記高周波加熱インダクタは、前記高周波加熱インダクタ本体をその積層コアを上面に臨ませた状態で絶縁樹脂ガラス製の筐体内に配置した状態で、絶縁・耐熱石膏を流し込んで凝固させてから前記積層コアが臨む上面を平坦面に仕上げることにより構成されていることを特徴としている。   Still further, a brazing device for a rotor coil according to a fifth aspect is the invention according to any one of the first to fourth aspects, wherein the high-frequency heating inductor has the high-frequency heating inductor body facing the laminated core. In a state in which the laminated core is placed in an insulating resin glass housing, the insulating and heat-resistant gypsum is poured and solidified, and then the upper surface facing the laminated core is finished to a flat surface. .

この請求項5に係る発明では、絶縁・耐熱石膏で高周波加熱インダクタ本体の全体を確実に保持することができると共に、高周波加熱インダクタ本体の発熱が絶縁樹脂ガラス製の筐体に伝達されることを防止し、剛性の高い絶縁樹脂ガラス製の筐体の焼損を確実に防止することができ、ロウ付け作業時に高周波加熱インダクタ本体の変形を確実に防止することができる。   In the invention according to claim 5, it is possible to reliably hold the entire high-frequency heating inductor body with insulating and heat-resistant gypsum, and that the heat generated by the high-frequency heating inductor body is transmitted to the casing made of insulating resin glass. Therefore, it is possible to reliably prevent the casing made of insulating resin glass having high rigidity from being burned out and to reliably prevent deformation of the high-frequency heating inductor body during the brazing operation.

また、請求項6に係るロータコイルのロウ付け装置は、請求項1乃至5の何れかに係る発明において、前記絶縁・耐熱用分離板は、前記高周波加熱インダクタの平坦面に密着可能で且つ前記軸長側平角導体及び周長側平角導体のロウ付け位置に開口部を有するセラミック平板で構成されていることを特徴としている。
この請求項6に係る発明では、セラミック平板を高周波加熱インダクタの平坦面に配設し、このセラミック平板の上にロータコイルを形成する軸長側平角導体及び周長側平角導体のロウ付け位置を開口部に対向させることにより、軸長側平角導体及び周長側平角導体のロウ付け位置と高周波加熱インダクタとの間隔を均一に維持することができると共に、溶融したロウ材がセラミック平板に付着して、冷却後に軸長側平角導体及び周長側平角導体の何れかとセラミック平板とが接着することを確実に回避して長期の使用に耐えることができる。
A rotor coil brazing device according to a sixth aspect of the present invention is the invention according to any one of the first to fifth aspects, wherein the insulating / heat-resistant separating plate can be in close contact with a flat surface of the high-frequency heating inductor, and It is characterized by comprising a ceramic flat plate having an opening at the brazing position of the long axial rectangular conductor and the circumferential rectangular conductor.
In the invention according to claim 6, the ceramic flat plate is disposed on the flat surface of the high-frequency heating inductor, and the brazing positions of the axial length side rectangular conductor and the circumferential length side rectangular conductor forming the rotor coil on the ceramic flat plate are set. By facing the opening, it is possible to maintain a uniform distance between the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor and the high frequency heating inductor, and the molten brazing material adheres to the ceramic flat plate. Thus, it is possible to reliably avoid adhesion of either the axial long side rectangular conductor or the circumferential long side rectangular conductor and the ceramic flat plate after cooling to withstand long-term use.

さらに、請求項7に係るロータコイルのロウ付け装置は、請求項1乃至6の何れかに係る発明において、前記ロウ箔装着装置は、軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置に個別に断面コ字状に形成されたコ字状ロウ箔を装着するように構成されていることを特徴としている。
この請求項7に係る発明では、軸長側平角導体及び周長側平角導体のロウ付け位置に断面コ字状のコ字状ロウ箔を装着するので、ロウ付け位置でのロウ材量を均一とすることができると共に、軸長側平角導体及び周長側平角導体へのロウ箔の装着を容易に行うことができる。
Further, a brazing device for a rotor coil according to a seventh aspect is the invention according to any one of the first to sixth aspects, wherein the brazing foil mounting device is configured such that the axial length side rectangular conductor and the circumferential length side rectangular conductor are perpendicular to each other. is characterized in that the brazing position that butt is configured to attach the U-shaped brazing foil formed separately U-shaped cross-section.
In the invention according to claim 7, since the U-shaped brazing foil having a U-shaped cross section is attached to the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, the amount of brazing material at the brazing position is uniform. In addition, it is possible to easily attach the brazing foil to the axial length side rectangular conductor and the circumferential length side rectangular conductor.

さらにまた、請求項8に係るロータコイルのロウ付け装置は、請求項7に係る発明において、前記ロウ箔装着装置は、前記コ字状ロウ箔を多数段積み保持するカートリッジと、該カートリッジの最下段のコ字状ロウ箔を押し出す押し治具と、該押し治具で押し出されたコ字状ロウ箔を、受入位置で傾斜案内面を有する保持用重錘を押し上げながら当該コ字状ロウ箔の開放端面を外部に臨ませて装入保持すると共に、保持したコ字状ロウ箔を前記軸長側平角導体及び周長側平角導体のロウ付け位置に移動して当該軸長側平角導体及び周長側平角導体に装着するロウ箔移動装着機構とを備えていることを特徴としている。   Furthermore, the brazing device for a rotor coil according to claim 8 is the invention according to claim 7, wherein the brazing foil mounting device includes a cartridge for holding a plurality of U-shaped brazing foils, A pushing jig for pushing out the lower U-shaped brazing foil, and the U-shaped brazing foil pushed out by the pushing jig while pushing up the holding weight having an inclined guide surface at the receiving position. Is inserted and held with the open end face facing outside, and the held U-shaped brazing foil is moved to the brazing position of the long shaft rectangular conductor and the long rectangular conductor, and the long shaft rectangular conductor and And a brazing foil moving mounting mechanism that is mounted on the peripheral side flat rectangular conductor.

この請求項8に係る発明では、カートリッジに保持されているコ字状ロウ箔を押し治具で1つずつ押し出し、押し出されたコ字状ロウ箔をその開放端面を外部に臨ませてロウ箔移動装着機構に挿入保持し、このロウ箔移動装着機構を軸長側平角導体及び周長側平角導体のロウ付け位置に移動させて、これらにコ字状ロウ箔を装着することにより、軸長側平角導体及び周長側平角導体へのロウ箔の装着を容易確実に行うことができる。しかも、ロウ箔移動装着機構では、コ字状ロウ箔が保持用重錘の傾斜案内面に係合してこの保持用重錘を押し上げながら装入保持されるので、ロウ箔移動装着機構での移動時にコ字状ロウ箔が位置ずれることを確実に防止することができる。   In the invention according to claim 8, the U-shaped brazing foil held on the cartridge is extruded one by one with a pushing jig, and the extruded U-shaped brazing foil faces its open end face to the outside, and the brazing foil Insert and hold in the moving mounting mechanism, move this brazing foil moving mounting mechanism to the brazing position of the axial length side rectangular conductor and circumferential length side rectangular conductor, and attach the U-shaped brazing foil to them, so that the axial length It is possible to easily and reliably attach the brazing foil to the side flat rectangular conductor and the circumferential long flat conductor. Moreover, in the brazing foil moving mounting mechanism, the U-shaped brazing foil is inserted and held while engaging the inclined guide surface of the holding weight and pushing up the holding weight. It is possible to reliably prevent the U-shaped brazing foil from being displaced during movement.

なおさらに、請求項9に係るロータコイルのロウ付け装置は、請求項1乃至8の何れかの発明において、前記高周波加熱電源制御手段は、温度計測手段で検出した温度情報がフィードバック情報として入力され、該フィードバック情報と目標温度情報との偏差に基づいて高周波加熱インダクタに供給する高周波電力を制御する高周波電力制御手段と、前記温度計測手段で計測した温度情報が設定された温度範囲内にあるか否かを判定し、温度範囲外であるときに警報を発する警報手段と、前記温度範囲の許容上限温度を所定時間超えて加熱温度が維持されたときに高周波電力の供給を停止させる高周波電力停止手段と、前記高周波電力制御手段の制御情報が入力される制御履歴格納手段とを備えていることを特徴としている。   Still further, according to a ninth aspect of the present invention, in the brazing device for a rotor coil according to any one of the first to eighth aspects, the high-frequency heating power source control means receives temperature information detected by the temperature measuring means as feedback information. A high frequency power control means for controlling the high frequency power supplied to the high frequency heating inductor based on a deviation between the feedback information and the target temperature information, and whether the temperature information measured by the temperature measurement means is within a set temperature range A high-frequency power stop that stops the supply of high-frequency power when the heating temperature is maintained exceeding a permissible upper limit temperature of the temperature range for a predetermined time; And a control history storage means to which control information of the high-frequency power control means is input.

この請求項9に係る発明では、高周波加熱電源制御手段は、温度計測手段で検出したロウ付け位置での温度情報がフィードバック情報として入力されるので、高周波加熱インダクタに供給する高周波電力を適正に制御してロウ付け位置の温度を設定温度範囲に正確に維持することができ、設定温度範囲外となったときに警報手段で警報が発せられる。さらに設定温度範囲のうち許容上限温度の範囲を超えて警報が発せられてから所定時間を超えて加熱温度が維持されたときは、高周波電力の供給を停止する。そして、制御履歴格納手段で高周波電力制御手段の制御情報が記憶されるとと共に、必要に応じて表示されることにより、適正な制御状態であるか否かの確認を行うことができる。   In the invention according to claim 9, the high frequency heating power source control means appropriately controls the high frequency power supplied to the high frequency heating inductor because the temperature information at the brazing position detected by the temperature measurement means is input as feedback information. Thus, the temperature of the brazing position can be accurately maintained within the set temperature range, and an alarm is issued by the alarm means when the temperature is out of the set temperature range. Further, when the heating temperature is maintained for a predetermined time after the alarm is issued exceeding the allowable upper limit temperature range in the set temperature range, the supply of the high frequency power is stopped. Then, the control information of the high-frequency power control means is stored in the control history storage means, and is displayed as necessary, so that it is possible to confirm whether or not the control state is appropriate.

また、請求項10に係るロータコイルのロウ付け装置は、請求項1乃至9の何れかの発明において、前記高周波加熱電源制御手段と前記温度計測手段とによって、前記軸長側平角導体及び前記周長側平角導体のロウ付け位置をロウ付けする温度情報が設定された温度範囲の許容下限温度に到達した時点から所定ロウ付け保持時間までロウ付け温度を保持するようにしたことを特徴としている。
この請求項10に係る発明では、温度範囲の許容下限温度に到達した時点から所定時間が経過するまで加熱温度を維持して、それから高周波電力の供給を高周波電力停止手段によって停止するので、いつも所定温度と所定時間が同時に維持されることになる。
A rotor coil brazing device according to a tenth aspect of the present invention is the rotor coil brazing device according to any one of the first to ninth aspects, wherein the high-frequency heating power source control means and the temperature measurement means comprise the shaft-long side rectangular conductor and the circumference. It is characterized in that the brazing temperature is held from the time when the temperature information for brazing the brazing position of the long side rectangular conductor reaches the allowable lower limit temperature of the set temperature range until the predetermined brazing holding time.
In the invention according to the tenth aspect, the heating temperature is maintained until a predetermined time elapses from the time when the allowable lower limit temperature of the temperature range is reached, and then the supply of the high frequency power is stopped by the high frequency power stopping means. The temperature and the predetermined time are simultaneously maintained.

さらに、請求項11に係るロータコイルのロウ付け装置は、請求項1乃至10の何れかの発明において、前記位置決め保持機構は、前記軸長側平角導体及び周長側平角導体を直角となるように互いにロウ付け位置を突き合わせて位置決めする当該ロウ付け位置から離れた位置に設けられた位置決め治具と、該位置決め治具で位置決めした前記軸長側平角導体及び周長側平角導体をその側面部及び上面部を同時に保持する固定チャック機構と、ロウ付け位置が側面部となる前記軸長側平角導体及び周長側平角導体の一方のロウ付け位置とは反対側の側面を熱膨張を許容可能に押圧する押圧機構とを備えていることを特徴としている。   Furthermore, the brazing device for a rotor coil according to an eleventh aspect is the invention according to any one of the first to tenth aspects, wherein the positioning and holding mechanism makes the axial length side rectangular conductor and the circumferential length side rectangular conductor perpendicular to each other. A positioning jig provided at a position distant from the brazing position for positioning the brazing positions with each other, and the axial length side rectangular conductor and the circumferential length side rectangular conductor positioned by the positioning jig on its side surface And a fixed chuck mechanism that holds the upper surface portion at the same time, and thermal expansion is allowed on the side surface opposite to the brazing position of the axial length side rectangular conductor and circumferential length side rectangular conductor whose brazing position is the side surface portion And a pressing mechanism that presses the head.

この請求項11に係る発明では、位置決め治具で、軸長側平角導体及び周長側平角導体を互いに直角となるようにロウ付け位置を突き合わせて位置決めし、この状態で固定チャック機構で軸長側平角導体及び周長側平角導体の側面部及び上面部を同時に保持し、さらにロウ付け位置が側面部となる軸長側平角導体及び周長側平角導体の一方のロウ付け位置とは反対側の側面を押圧機構で熱膨張を許容するように押圧することにより、軸長平角導体及び周長平角導体のロウ付け位置を加熱したときに、熱膨張によってロウ付け位置での段差や変形が生じることを確実に防止することができる。   In the invention according to claim 11, with the positioning jig, the axial length side rectangular conductor and the circumferential length side rectangular conductor are positioned by abutting the brazing positions so as to be at right angles to each other. Holds the side and top surfaces of the side rectangular conductor and circumferential long rectangular conductor at the same time, and the brazing position is the side opposite to the brazing position of one of the axial long rectangular conductor and circumferential long rectangular conductor. When the brazing position of the axial long rectangular conductor and the circumferential long rectangular conductor is heated by pressing the side surface of the steel plate so as to allow thermal expansion, a step or deformation at the brazing position occurs due to thermal expansion. This can be surely prevented.

さらにまた、請求項12に係るロータコイルのロウ付け方法は、電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップとを備えたことを特徴としている。
この請求項12に係る発明でも熟練を要することなく、設定温度での均一加熱を行って、ロータコイルのロウ付けを正確に行うことができる。
Furthermore, according to a twelfth aspect of the present invention, there is provided a brazing method for a rotor coil that brazes a pair of axially long rectangular conductors and a pair of circumferentially elongated rectangular conductors that constitute a rotor coil provided in a rotor of an electric machine. in brazing method of the coil, the axial length side flat conductor and the circumferential length side flat conductor brazing comprising the steps of: mounting a b c foil position, prior km c axis length side fitted with a foil flat conductor and the circumferential length side of the rectangular conductor, joined to each other in b c foil, the joining position is a high-frequency heating inductor insulator is disposed on the high-frequency heating inductor having a main body and heat separation plate above having a laminated core and a water-cooled conductive pipe that with positioning and holding as, high supplies vicinity of the joining position and the step of pressing by the pressing mechanism from above, the high-frequency heating inductor body while detecting the temperature at the braze location Is characterized in that a step of heating by controlling the microwave power.
The invention according to claim 12 can perform brazing of the rotor coil accurately by performing uniform heating at a set temperature without requiring skill.

なおさらに、請求項13に係るロータコイルのロウ付け方法は、電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、位置決め保持された互いのロウ箔の接合位置にロウ棒を載置するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップとを備えたことを特徴としている。
この請求項13では、請求項12に係る発明の作用に加えて、位置決め保持されたコ字状ロウ箔の接合位置にロウ棒を配置するので、このロウ棒によって余盛り高さを調整することができる。
Furthermore, according to a thirteenth aspect of the present invention, there is provided a brazing method for a rotor coil that brazes a pair of axially long rectangular conductors and a pair of circumferentially elongated rectangular conductors that constitute a rotor coil provided in a rotor of an electric machine. in brazing method of the coil, the axial length side flat conductor and the circumferential length side flat conductor brazing comprising the steps of: mounting a b c foil position, prior km c axis length side fitted with a foil flat conductor and the circumferential length side of the rectangular conductor, joined to each other in b c foil, the joining position is a high-frequency heating inductor insulator is disposed on the high-frequency heating inductor having a main body and heat separation plate above having a laminated core and a water-cooled conductive pipe that with positioning and holding as the steps of placing a step of pressing by the pressing mechanism in the vicinity of the joining position from above, the row bar joining position of the b window foil of each other that is positioned and held, the brazing Is characterized in that a step of heating by controlling the high frequency power supplied to the high-frequency heating inductor body while detecting the temperature at only position.
In the thirteenth aspect, in addition to the action of the invention according to the twelfth aspect, since the brazing rod is disposed at the joining position of the U-shaped brazing foil that is positioned and held, the extra height is adjusted by the brazing rod. Can do.

また、請求項14に係るロータコイルのロウ付け方法は、電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップと、ロウ付け終了直後に直ちにロウ付け部を強制空冷するステップとを備えたことを特徴としている。
この請求項14では、請求項12に係る発明の作用に加えて、ロウ付け終了直後に直ちにロウ付け部を強制空冷するので、高品質のロ付けを行うことができると共に、ロウ付け作業時間を大幅に短縮することができる。
According to a fourteenth aspect of the present invention, there is provided a brazing method for a rotor coil that brazes a pair of axially long rectangular conductors and a pair of circumferentially elongated rectangular conductors that constitute a rotor coil provided in a rotor of an electric machine. in the brazing process, step a, before kilo c axis length was fitted with a foil side flat conductor and the circumferential length side flat mounting the b c foil brazing position of the axial length side flat conductor and the circumferential length side flat conductor conductors, so that joined to each other in b c foil, and its bonding position is laminated core and a water-cooled conductive pipe and high-frequency heating inductor insulator is disposed on the high-frequency heating inductor having a main body and heat separation plate above with with positioning and holding, the step and the high-frequency electric supply to the high-frequency heating inductor body while detecting the temperature in the brazing position pressed by the pressing mechanism in the vicinity of the joining position from above It is characterized by comprising the steps of controlling the by heating, and a step immediately forced air cooling the brazed portion immediately brazing ends.
In the claim 14, in addition to the effect of the invention according to claim 12, since immediately forced cooling the brazed portion immediately brazing finished, it is possible to perform b c with high quality, the brazing operation time Can be greatly shortened.

さらに、請求項15に係るロータコイルのロウ付け方法は、電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、位置決め保持された互いのロウ箔の接合位置にロウ棒を載置するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップと、ロウ付け終了直後に直ちにロウ付け部を強制空冷するステップとを備えたことを特徴としている。
この請求項15の発明では、請求項12の作用に、請求項13及び14の作用を合わせ備えている。
さらにまた、請求項16に係るロータコイルのロウ付け方法は、請求項12乃至15の何れかの発明において、前記軸長側平角導体及び周長側平角導体のロウ付け位置に装着される前記ロウ箔は、断面コ字状に形成されたコ字状ロウ箔であることを特徴としている。
この請求項16の発明では、請求項7と同様の作用を得ることができる。
Furthermore, the brazing method for a rotor coil according to claim 15 is a rotor coil for brazing a pair of axially long rectangular conductors and a pair of circumferentially elongated rectangular conductors constituting a rotor coil provided in a rotor of an electrical equipment. in the brazing process, step a, before kilo c axis length was fitted with a foil side flat conductor and the circumferential length side flat mounting the b c foil brazing position of the axial length side flat conductor and the circumferential length side flat conductor conductors, so that joined to each other in b c foil, and its bonding position is laminated core and a water-cooled conductive pipe and high-frequency heating inductor insulator is disposed on the high-frequency heating inductor having a main body and heat separation plate above with with positioning and holding, the steps and, the braze to place a step of pressing by the pressing mechanism near the top, the row bar joining position of mutual b c foils positioned and held in the joining position A step of controlling and heating the high-frequency power supplied to the high-frequency heating inductor body while detecting the temperature at the mounting, and a step of forcibly air-cooling the brazed portion immediately after the brazing is completed. .
According to the fifteenth aspect of the present invention, the action of the twelfth aspect is combined with the action of the thirteenth and fourteenth aspects.
Furthermore, a brazing method for a rotor coil according to a sixteenth aspect is the brazing method according to any one of the twelfth to fifteenth aspects, wherein the brazing mounted on the brazing position of the long shaft rectangular conductor and the long rectangular conductor. The foil is characterized by being a U-shaped wax foil having a U-shaped cross section.
In the invention of claim 16, the same effect as that of claim 7 can be obtained.

請求項1に係る発明によれば、高周波加熱インダクタの平坦面に積層コアを臨ませ、この平坦面に絶縁・耐熱用分離板が配設される。ロータコイルを構成する軸長側平角導体及び周長側平角導体の夫々のロウ付け位置にロウ箔装着装置で、例えばコ字状のロウ箔を装着してから軸長側平角導体及び周長側平角導体のロウ箔を接合させ、その接合位置が絶縁・耐熱用分離板上となるように位置決め保持機構で位置決め保持すると共に、押圧機構で上方から押圧することにより、軸長側平角導体及び周長側平角導体のロウ付け位置に段差を生じることなく平坦面とすると共に、積層コアとの間隔を一定間隔とすることができ、この状態で、ロウ箔接合位置の温度を温度計測手段で計測しながら高周波加熱電源制御手段で高周波加熱インダクタ本体に高周波電力を供給することにより、ロウ付け位置を所定温度に維持しながらロウ付け位置の均一な加熱を行って、熟練を要することなく正確なロウ付けを行うことができるという効果が得られる。   According to the first aspect of the present invention, the laminated core faces the flat surface of the high-frequency heating inductor, and the insulating / heat-resistant separating plate is disposed on the flat surface. For example, after installing a U-shaped brazing foil at the brazing position of each of the long axis rectangular conductor and the long rectangular conductor constituting the rotor coil, the long axial rectangular conductor and the long side By fixing the brazing foil of the flat rectangular conductor and positioning and holding it with the positioning and holding mechanism so that the bonding position is on the insulating / heat-resistant separator, and by pressing from above with the pressing mechanism, In addition to making the flat surface without any step at the brazing position of the long side rectangular conductor, the distance from the laminated core can be kept constant, and in this state, the temperature of the brazing foil joint position is measured by the temperature measuring means While supplying high-frequency power to the high-frequency heating inductor body with the high-frequency heating power supply control means, the brazing position is uniformly heated while maintaining the brazing position at a predetermined temperature, and skill is required. Ku effect is obtained that it is possible to perform accurate brazing.

また、請求項2に係る発明によれば、高周波加熱インダクタの平坦面に積層コアを臨ませ、この平坦面に絶縁・耐熱用分離板が配設される。ロータコイルを構成する軸長側平角導体及び周長側平角導体の夫々のロウ付け位置にロウ箔装着装置で、例えばコ字状のロウ箔を装着してから軸長側平角導体及び周長側平角導体のロウ箔を接合させ、その接合位置が絶縁・耐熱用分離板上となるように位置決め保持機構で位置決め保持すると共に、そのロウ箔の接合位置に必要に応じてロウ棒を配置させ、押圧機構で上方から押圧することにより、軸長側平角導体及び周長側平角導体のロウ付け位置に段差を生じることなく平坦面とすると共に、積層コアとの間隔を一定間隔とすることができ、この状態で、ロウ箔接合位置の温度を温度計測手段で計測しながら高周波加熱電源制御手段で高周波加熱インダクタ本体に高周波電力を供給することにより、ロウ付け位置を所定温度に維持しながらロウ付け位置の均一な加熱を行うことができると共に、ロウ棒配置装置によってロウ付け位置にコ字状ロウ箔が装着された箇所の上に必要によりロウ棒を配置してロウ付けすると、余盛りの高さをコ字状ロウ箔よりも高く確保したい場合、あるいはロウ付け保持時間をより長く確保したい場合に効果が得られる。   According to the second aspect of the present invention, the laminated core faces the flat surface of the high-frequency heating inductor, and the insulating / heat-resistant separating plate is disposed on the flat surface. For example, after installing a U-shaped brazing foil at the brazing position of each of the long axis rectangular conductor and the long rectangular conductor constituting the rotor coil, the long axial rectangular conductor and the long side Join the flat conductor brazing foil, position and hold it with the positioning and holding mechanism so that the joining position is on the insulating and heat-resistant separator, and arrange the brazing rod at the joining position of the brazing foil as necessary, By pressing from above with the pressing mechanism, it is possible to make a flat surface without causing a step at the brazed position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, and to keep the distance from the laminated core constant. In this state, the brazing position is maintained at a predetermined temperature by supplying the high-frequency power to the high-frequency heating inductor body by the high-frequency heating power source control means while measuring the temperature of the solder foil joining position by the temperature measuring means. The brazing position can be heated evenly, and if the brazing bar is placed on the place where the U-shaped brazing foil is mounted at the brazing position by the brazing bar placement device and brazed, The effect is obtained when it is desired to secure a height higher than that of the U-shaped brazing foil or when it is desired to secure a longer brazing holding time.

さらに、請求項3に係る発明によれば、前記軸長側平角導体及び前記周長側平角導体の突合せ位置をロウ付けした後のロウ付け部を強制的に空冷する強制空冷手段を備えているので、ロウ付け後のロウ付け部を強制的に空冷することができ、高品質のロウ付けを行うことができると共に、ロウ付け作業時間を大幅に短縮することができる。
さらにまた、請求項4に係る発明によれば、導体のロウ付け位置でのロウ付け部において、ロウ付け終了直後に直ちにロウ付け部をガスノズル機構によって強制空冷することにより冷却時間を大幅に短縮できるようになった。しかも、絶縁・耐熱用分離板と導体とが付着して離れないということがなく、容易に分離することができるという効果が得られる。なお、上記のように、全体のロウ付け作業時間の短縮を目的として、冷却時間が大幅に短縮されるように、強制冷却によりロウ付け部を急激に冷却しても、一般的に急激な冷却の場合に問題となるような、絶縁・耐熱用分離板の割れや寿命の低下もなかった。
Furthermore, according to the invention which concerns on Claim 3, the forced air cooling means which forcibly air-cools the brazing part after brazing the butt | matching position of the said axial length side rectangular conductor and the said circumferential length side rectangular conductor is provided. Therefore, the brazed portion after brazing can be forcibly air-cooled, high-quality brazing can be performed, and brazing operation time can be greatly shortened.
Furthermore, according to the invention of claim 4, in the brazing portion at the brazing position of the conductor, the brazing portion is immediately forcedly cooled by the gas nozzle mechanism immediately after the brazing is completed, so that the cooling time can be greatly shortened. It became so. In addition, the insulating / heat-resistant separating plate and the conductor do not adhere to each other and are not separated from each other, and the effect that they can be easily separated is obtained. As described above, in order to shorten the overall brazing work time, even if the brazing part is cooled rapidly by forced cooling, the cooling is generally rapid so that the cooling time is greatly shortened. In this case, there was no breakage of the insulating / heat-resistant separator and a decrease in the service life, which would be a problem in the case of.

なおさらに、請求項5に係る発明によれば、絶縁・耐熱石膏で高周波加熱インダクタ本体の全体を確実に保持することができると共に、高周波加熱インダクタ本体の発熱が絶縁樹脂ガラス製の筐体に伝達されることを防止し、剛性の高い絶縁樹脂ガラス製の筐体の焼損を確実に防止することができ、ロウ付け作業時に高周波加熱インダクタ本体の変形を確実に防止することができるという効果が得られる。   Furthermore, according to the invention of claim 5, the entire high-frequency heating inductor body can be securely held by the insulating / heat-resistant gypsum, and the heat generated by the high-frequency heating inductor body is transmitted to the casing made of insulating resin glass. It is possible to reliably prevent the casing made of insulating resin glass having high rigidity from being burned out and to reliably prevent deformation of the high-frequency heating inductor body during brazing. It is done.

また、請求項6に係る発明によれば、セラミック平板を高周波加熱インダクタの平坦面に配設し、このセラミック平板の上にロータコイルを形成する軸長側平角導体及び周長側平角導体のロウ付け位置を開口部に対向させることにより、軸長側平角導体及び周長側平角導体のロウ付け位置と高周波加熱インダクタとの間隔を均一に維持することができると共に、溶融したロウ材がセラミック平板に付着して、冷却後に軸長側平角導体及び周長側平角導体の何れかとセラミック平板とが接着することを確実に回避して長期の使用に耐えることができるという効果が得られる。   According to the invention of claim 6, the ceramic flat plate is disposed on the flat surface of the high-frequency heating inductor, and the axial length side rectangular conductor and the circumferential length side rectangular conductor brazing member forming the rotor coil on the ceramic flat plate. By facing the brazing position to the opening, the distance between the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor and the high-frequency heating inductor can be maintained uniformly, and the molten brazing material is a ceramic flat plate. Thus, it is possible to reliably prevent the ceramic flat plate from adhering to either the axial length side rectangular conductor or the circumferential length side rectangular conductor after cooling and to withstand long-term use.

さらに、請求項7に係る発明によれば、軸長側平角導体及び周長側平角導体のロウ付け位置に断面コ字状のコ字状ロウ箔を装着するので、ロウ付け位置でのロウ材量を均一とすることができると共に、軸長側平角導体及び周長側平角導体へのロウ箔の装着を容易に行うことができるという効果が得られる。
さらにまた、請求項8に係る発明によれば、カートリッジに保持されているコ字状ロウ箔を押し治具で1つずつ押し出し、押し出されたコ字状ロウ箔をその開放端面を外部に臨ませてロウ箔移動装着機構に挿入保持し、このロウ箔移動装着機構を軸長側平角導体及び周長側平角導体のロウ付け位置に移動させて、これらにコ字状ロウ箔を装着することにより、軸長側平角導体及び周長側平角導体へのロウ箔の装着を容易確実に行うことができ、しかも、ロウ箔移動装着機構では、コ字状ロウ箔が保持用重錘の傾斜案内面に係合してこの保持用重錘を押し上げながら装入保持されるので、ロウ箔移動装着機構での移動時にコ字状ロウ箔が位置ずれることを確実に防止することができるという効果が得られる。
Further, according to the invention of claim 7, since the U-shaped brazing foil having a U-shaped cross section is attached to the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, the brazing material at the brazing position The amount can be made uniform, and the effect that the brazing foil can be easily attached to the axial length side rectangular conductor and the circumferential length side rectangular conductor can be obtained.
Furthermore, according to the eighth aspect of the invention, the U-shaped brazing foil held on the cartridge is extruded one by one with a pushing jig, and the extruded U-shaped brazing foil faces the open end face to the outside. First, insert and hold the solder foil moving mounting mechanism, move this solder foil moving mounting mechanism to the brazing position of the axial long side rectangular conductor and the circumferential long side rectangular conductor, and attach the U-shaped brazing foil to them. Thus, the solder foil can be easily and reliably attached to the long rectangular rectangular conductor and the long circumferential rectangular conductor. Moreover, in the brazing foil moving mounting mechanism, the U-shaped brazing foil is inclined to guide the holding weight. Since it is loaded and held while engaging the surface and pushing up the holding weight, it is possible to reliably prevent the U-shaped brazing foil from being displaced during movement by the brazing foil moving mounting mechanism. can get.

なおさらに、請求項9に係る発明によれば、高周波加熱電源制御手段は、温度計測手段で検出したロウ付け位置での温度情報がフィードバック情報として入力されるので、高周波加熱インダクタに供給する高周波電力を適正に制御してロウ付け位置の温度を設定温度範囲に正確に維持することができ、設定温度範囲外となったときに警報手段で警報が発せられる。また、万一、赤外線放射温度計などの温度計測手段で検出した温度情報に基づく一定温度の制御が働かずに加熱の上昇が暴走した場合には、許容上限温度を超えて所定時間で高周波電力の供給が停止する。そして、制御履歴格納手段で高周波電力制御手段の制御情報が記憶されると共に、必要に応じて表示されることにより、適正な制御状態であるか否かの確認を行うことができるという効果が得られる。 Still further, according to the invention according to claim 9, since the high frequency heating power control means receives the temperature information at the brazing position detected by the temperature measuring means as feedback information, the high frequency power supplied to the high frequency heating inductor The temperature of the brazing position can be accurately maintained within the set temperature range by appropriately controlling the temperature, and an alarm is issued by the alarm means when the temperature is out of the set temperature range. Also, in the unlikely event that the temperature rise based on temperature information detected by a temperature measurement means such as an infrared radiation thermometer does not work and the increase in heating goes out of control, the high frequency power is exceeded for a predetermined time exceeding the allowable upper limit temperature. Supply stops. Then, the effect that the control information of the high frequency power control means in the control history storage means together when Ru is stored, by being displayed as needed, it can be checked whether the correct control state can get.

また、請求項10に係る発明によれば、高周波加熱電源制御手段と温度計測手段とによって、導体のロウ付け位置をロウ付けする場合、温度範囲の許容下限温度に到達した時点から所定ロウ付け保持時間までロウ付け温度を保持するようにしたことによって、上昇速度のバラツキによって許容下限温度までに到達する所要時間が異なっても、常に一定のロウ付け保持時間が確保できるのでロウ付け品質が安定するという効果が得られる。   According to the tenth aspect of the present invention, when the brazing position of the conductor is brazed by the high-frequency heating power control means and the temperature measuring means, the predetermined brazing is maintained from the time when the allowable lower limit temperature of the temperature range is reached. By maintaining the brazing temperature until the time, even if the required time to reach the allowable lower limit temperature varies depending on the variation of the rising speed, the brazing quality is stable because a constant brazing holding time can always be secured. The effect is obtained.

さらに、請求項11に係る発明によれば、位置決め治具で、軸長側平角導体及び周長側平角導体を互いに直角となるようにロウ付け位置を突き合わせて位置決めし、この状態で固定チャック機構で軸長側平角導体及び周長側平角導体の側面部及び上面部を同時に保持し、さらにロウ付け位置が側面部となる軸長側平角導体及び周長側平角導体の一方のロウ付け位置とは反対側の側面を押圧機構で熱膨張を許容するように押圧することにより、軸長平角導体及び周長平角導体のロウ付け位置を加熱したときに、熱膨張によってロウ付け位置での段差や変形が生じることを確実に防止することができるという効果が得られる。   Further, according to the invention of claim 11, with the positioning jig, the axial length side rectangular conductor and the circumferential length side rectangular conductor are positioned by abutting the brazing positions so as to be perpendicular to each other, and in this state, the fixed chuck mechanism Simultaneously hold the side surface and the top surface of the axial long side rectangular conductor and the circumferential long side rectangular conductor, and the brazing position is a brazing position of one of the axial long side rectangular conductor and the circumferential long side rectangular conductor. When the brazing positions of the axial long rectangular conductor and the circumferential long rectangular conductor are heated by pressing the opposite side surface with a pressing mechanism so as to allow thermal expansion, a step or An effect of reliably preventing the deformation can be obtained.

さらにまた、請求項12に係る発明によれば、請求項1に係る発明と同様に熟練を要することなく、設定温度での均一加熱を行って、ロータコイルのロウ付けを正確に行うことができるという効果が得られる。
さらにまた、請求項13に係る発明によれば、請求項2と同様の効果を得ることができる。
なおさらに、請求項14に係る発明によれば、請求項3と同様の効果を得ることができる。
また、請求項15に係る発明によれば、請求項2と請求項3の効果を合わせた効果が得られる。
また、請求項16に係る発明によれば、請求項7と同様の効果を得ることができる。
Furthermore, according to the twelfth aspect of the invention, similarly to the first aspect of the invention, it is possible to perform brazing of the rotor coil accurately by performing uniform heating at a set temperature without requiring skill. The effect is obtained.
Furthermore, according to the invention which concerns on Claim 13, the effect similar to Claim 2 can be acquired.
Furthermore, according to the invention of claim 14, the same effect as that of claim 3 can be obtained.
According to the fifteenth aspect of the present invention, an effect obtained by combining the effects of the second and third aspects can be obtained.
According to the sixteenth aspect, the same effect as in the seventh aspect can be obtained.

以下、本発明の実施の形態を図面について説明する。
図1(a)は本発明の一実施形態を示す一部を断面とした正面図、図1(b)はコ字状箔の上にロウ棒配置装置によってロウ棒を載せた図、図2は図1の平面図である。
ロウ付け装置1は、ロータコイルを構成する軸長側平角導体2及びこの軸長側平角導体2より幅広に形成された周長側平角導体3を、軸長側平角導体2の右端面を周長側平角導体3の前端側左側面に当接させるように直角に配置し、その当接部をロウ付け位置としてロウ付けする。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1A is a front view with a cross section showing a part of one embodiment of the present invention, FIG. 1B is a diagram in which a wax bar is placed on a U-shaped foil by a wax bar arranging device, and FIG. FIG. 2 is a plan view of FIG. 1.
The brazing device 1 includes an axial length side rectangular conductor 2 constituting a rotor coil and a circumferential length side rectangular conductor 3 formed wider than the axial length side rectangular conductor 2 around the right end surface of the axial length side rectangular conductor 2. It arrange | positions at right angle so that it may contact | abut to the front end side left side surface of the long side rectangular conductor 3, and the contact part is brazed as a brazing position.

このロウ付け装置1は、軸長側平角導体2及び周長側平角導体3のロウ付け位置を高周波加熱する高周波加熱インダクタ4と、この高周波加熱インダクタ4上に後述する筐体44の平坦面を閉塞するように配設された上面及び下面が互いに平行な平坦面とされた絶縁・耐熱分離板としての絶縁・耐熱セラミック平板5と、軸長側平角導体2及び周長側平角導体3のロウ付け位置にそれぞれコ字状ロウ箔6を装着するロウ箔装着装置7と、絶縁・耐熱セラミック平板5上にコ字状ロウ箔6を装着した軸長側平角導体2及び周長側平角導体3を位置決め保持する位置決め保持機構8と、この位置決め保持機構8で位置決め保持した軸長側平角導体2及び周長側平角導体3のコ字状ロウ箔6の接合位置にロウ棒100を配置するロウ棒配置装置101と、位置決め保持機構8で位置決め保持された軸長側平角導体2及び周長側平角導体3のロウ付け位置近傍を上方から押圧する上側押圧機構9と、軸長側平角導体2及び周長側平角導体3のロウ付け位置の温度を計測する赤外線放射温度計10と、前記軸長側平角導体2及び前記周長側平角導体3のロウ付け位置のロウ付け終了直後に、ロウ付け付近全体を強制的に空冷する強制空冷手段としての強制冷却ガスノズル102とを備えている。   The brazing device 1 includes a high-frequency heating inductor 4 that heats a brazing position of the axial long side rectangular conductor 2 and the circumferential long side rectangular conductor 3 at a high frequency, and a flat surface of a casing 44 described later on the high frequency heating inductor 4. An insulating / heat-resistant ceramic flat plate 5 as an insulating / heat-resistant separating plate, the upper surface and the lower surface of which are arranged so as to be closed and flat surfaces parallel to each other, and the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 are brazed. A brazing foil mounting device 7 for mounting a U-shaped brazing foil 6 at each attachment position, and an axial long side rectangular conductor 2 and a circumferential long side rectangular conductor 3 having a U-shaped brazing foil 6 mounted on an insulating / heat-resistant ceramic flat plate 5. A brazing rod 100 is disposed at the joining position of the U-shaped brazing foil 6 of the long rectangular rectangular conductor 2 and the long rectangular rectangular conductor 3 positioned and held by the positioning and holding mechanism 8. Bar placement device 10 An upper pressing mechanism 9 that presses the vicinity of the brazed position of the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 positioned and held by the positioning holding mechanism 8 from above, and the axial length side rectangular conductor 2 and the circumference length side. The infrared radiation thermometer 10 that measures the temperature of the brazing position of the flat conductor 3 and the brazing position of the entire brazing position of the axial length side flat conductor 2 and the circumferential length side flat conductor 3 immediately after brazing are completed. And a forced cooling gas nozzle 102 as forced air cooling means for forcibly cooling the air.

高周波加熱インダクタ4は、図3(a),(b)及び(d)に示すように、平面から見て長方形状の平板部41とこの平板部41の左端から上方に突出する垂直板部42とからL字状に形成された基台43における平板部41の垂直板部42とは反対側に載置されており、上面を開放した絶縁・耐熱性エポキシガラス製の筐体44と、基台43の垂直板部42に固定された固定保持部45に保持されて筐体44内に延長する水冷銅パイプ46、並びに水冷銅パイプ46の前述したロウ付け位置を挟む軸長側平角導体2及び周長側平角導体3に対向する位置に配設された凹状の積層コア47及び48を有する高周波加熱インダクタ本体49と備えている。   As shown in FIGS. 3A, 3 </ b> B, and 3 </ b> D, the high-frequency heating inductor 4 includes a flat plate portion 41 that is rectangular when viewed from above and a vertical plate portion 42 that protrudes upward from the left end of the flat plate portion 41. And a base plate 43 formed in an L shape on the side opposite to the vertical plate portion 42 of the flat plate portion 41, and a housing 44 made of insulating and heat-resistant epoxy glass having an open upper surface, A water-cooled copper pipe 46 that is held by a fixed holding portion 45 that is fixed to the vertical plate portion 42 of the base 43 and extends into the housing 44, and an axial long side rectangular conductor 2 that sandwiches the brazing position of the water-cooled copper pipe 46 described above. And a high-frequency heating inductor body 49 having concave laminated cores 47 and 48 disposed at a position facing the circumferential long side rectangular conductor 3.

ここで、水冷銅パイプ46は、図3(a),(b),(d)に示すように、角筒状に形成されて内部に冷却水が通水され、固定保持部45から後方に直進して筐体44に形成した凹部44aを通って筐体44内にその上面が筐体44の上端の平坦面と一致するようにして入る導入部46aと、この導入部46aの筐体44内側端部から後右方に傾斜延長する傾斜延長部46bと、この傾斜延長部46bから後方に筐体44の右側面板44bと平行に直進して筐体44の後面板44cの僅か手前まで延長し、上面を除く外周面に凹状の積層コア47が配設された周長側平角導体3のロウ付け位置近傍を加熱する加熱部46cと、この加熱部46cの後端から下方に筐体44の底面板44dの僅か手前まで延長する垂直部46dと、この垂直部46dから筐体44の底面板44dに沿って前方に折り返して傾斜延長部46bに対向する位置まで延長する折り返し部46eと、この折り返し部46eから左方に僅かに延長してから上方に延長するL字状部46fと、このL字状部46fの上端から上面を筐体44の平坦面と一致させるように左方に延長する間隔調整部46gと、この間隔調整部46fの左端から加熱部46cと平行に後方に延長し、上面を除く外周面に凹上の積層コア48が配設された軸長側平角導体4のロウ付け位置近傍を加熱する加熱部46hと、この加熱部46hの後端から下方に延長する垂直部46iと、この垂直部46iの下端から底面板44dと平行に前方に延長する折り返し部46jと、この折り返し部46jの前端から上方に延長してから右方に僅かに延長するL字状部46kと、このL字状部46kの右端から前方に導入部46aと平行に延長して固定保持部45に達する導出部46mとから構成されている。   Here, as shown in FIGS. 3A, 3B, and 3D, the water-cooled copper pipe 46 is formed in a rectangular tube shape, and the cooling water is passed through the interior thereof. An introduction portion 46a that goes straight through the recess 44a formed in the housing 44 and enters the housing 44 so that its upper surface coincides with the flat surface at the upper end of the housing 44, and the housing 44 of the introduction portion 46a. A slope extension 46b that slopes and extends to the rear right side from the inner end, and extends rearward from the slope extension 46b in parallel with the right side plate 44b of the housing 44 to extend slightly before the rear plate 44c of the housing 44. Then, a heating part 46c for heating the vicinity of the brazing position of the peripheral long side rectangular conductor 3 in which the concave laminated core 47 is disposed on the outer peripheral surface excluding the upper surface, and the housing 44 downward from the rear end of the heating part 46c. A vertical portion 46d extending slightly before the bottom plate 44d, and the vertical portion 4 a folding portion 46e that folds forward from d along the bottom plate 44d of the housing 44 and extends to a position facing the inclined extension portion 46b, and slightly extends leftward from the folding portion 46e and then extends upward. An L-shaped portion 46f, a distance adjusting portion 46g extending leftward from the upper end of the L-shaped portion 46f so as to coincide with the flat surface of the housing 44, and a heating portion from the left end of the distance adjusting portion 46f A heating section 46h that heats the vicinity of the brazing position of the long rectangular conductor 4 that extends rearward in parallel with 46c and has a concave laminated core 48 disposed on the outer peripheral surface excluding the upper surface; A vertical portion 46i extending downward from the rear end, a folded portion 46j extending forward from the lower end of the vertical portion 46i in parallel with the bottom plate 44d, and extending upward from the front end of the folded portion 46j to the right Slightly An L-shaped portion 46k for long, and a lead-out portion 46m from the right end of the L-shaped portion 46k reaches the fixing holder 45 and extends parallel to the inlet portion 46a to the front.

そして、この水冷銅パイプ46が導入部46a、傾斜延長部46b、加熱部46c、間隔調整部46f、加熱部46g、L字状部46k及び導出部46mの上面を筐体44の平坦面と一致し、且つ積層コア47及び48の上端面も筐体44の平坦面と一致するように保持した状態で、筐体44内に絶縁・耐熱石膏50を流し込んで凝固させることにより、高周波加熱インダクタ本体49を構成する水冷銅パイプ46及び積層コア47,48を筐体44内に強固に固定する。このとき、水冷銅パイプ46の加熱部46c及び46h間における軸長側平角導体2及び周長側平角導体3のロウ付け位置に対応する位置に上下方向に延長する貫通孔44eが形成される。そして、絶縁・耐熱石膏50は凝固したときにその上面が平坦面より僅かに高くなるようにし、この上面を研削して平坦面と一致するように仕上げる。このようにすることにより、高周波加熱インダクタ4の全面が平坦面となり、この平坦面で軸長側平角導体2及び周長側平角導体3を受けることが可能となり、機械的強度を向上させることができると共に、軸長側平角導体2及び周長側平角導体3と積層コア47及び48との間隔を常に一定とすることができ、従来例のような加熱温度のバラツキを防止することができる。   The water-cooled copper pipe 46 is aligned with the flat surface of the housing 44 so that the upper surface of the introduction portion 46a, the inclined extension portion 46b, the heating portion 46c, the spacing adjustment portion 46f, the heating portion 46g, the L-shaped portion 46k, and the lead-out portion 46m. In addition, in a state where the upper end surfaces of the laminated cores 47 and 48 are also held so as to coincide with the flat surface of the housing 44, an insulating / heat-resistant gypsum 50 is poured into the housing 44 and solidified, whereby a high-frequency heating inductor body The water-cooled copper pipe 46 and the laminated cores 47 and 48 constituting 49 are firmly fixed in the housing 44. At this time, a through-hole 44e extending in the vertical direction is formed at a position corresponding to the brazing position of the axially long flat conductor 2 and the peripheral long flat conductor 3 between the heating portions 46c and 46h of the water-cooled copper pipe 46. Then, the insulating / heat-resistant gypsum 50 is finished so that its upper surface is slightly higher than the flat surface when solidified, and the upper surface is ground to coincide with the flat surface. By doing so, the entire surface of the high-frequency heating inductor 4 becomes a flat surface, and this flat surface can receive the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3, thereby improving the mechanical strength. In addition, the distances between the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 and the laminated cores 47 and 48 can be made constant at all times, and variations in heating temperature as in the conventional example can be prevented.

絶縁・耐熱セラミック平板5は、図3(c)に示すように、軸長側平角導体3を支持する平面から見てL字状に形成されたL字状板部5aと、このL字状板部5aの短片側に接触され、且つ長片側に対して側縁が高周波加熱インダクタ4の筐体44内に形成された貫通孔44eに対応する間隔を開けて対向し、周長側平角導体を支持する長方形の平板部5bとで構成されている。そして、L字状板部5aが高周波加熱インダクタ4の平坦面における左半部に右側面が貫通孔44eを形成する左側壁に沿うように載置され、同様に平板部5bが高周波加熱インダクタ4の平坦面における右半部に左側面が貫通孔44eを形成する右側壁に沿うように載置されている。 As shown in FIG. 3 (c), the insulating / heat-resistant ceramic flat plate 5 includes an L-shaped plate portion 5a formed in an L shape when viewed from a plane supporting the shaft-long flat conductor 3, and the L-shaped plate. A flat rectangular conductor that is in contact with the short piece side of the plate portion 5a and whose side edge is opposed to the long piece side with an interval corresponding to a through hole 44e formed in the housing 44 of the high-frequency heating inductor 4. 3 and a rectangular flat plate portion 5 b that supports 3 . The L-shaped plate portion 5a is placed on the left half of the flat surface of the high-frequency heating inductor 4 so that the right-side surface is along the left side wall forming the through hole 44e. The left side surface is placed along the right side wall forming the through hole 44e in the right half of the flat surface.

ロウ箔装着装置7は、図4に示すように、軸長側平角導体2の右端面及び周長側平角導体3の前端側左側面に、軸長側平角導体2の幅と略等しい幅で、かつ軸長側平角導体2の厚みと略等しい高さを有する垂直箔部6aとこの垂直箔部6aの上下端部からそれぞれ例えば左方向に延長する水平箔部6b及び6cとで構成される銀ロウ材で構成された断面コ字状のコ字状ロウ箔6を軸長側平角導体2の右端面及び周長側平角導体3の前端側右側面に装着するものである。ここで、コ字状ロウ箔6はその水平箔部6b及び6cの自由端部に外方に僅かに湾曲延長するカール部6dが形成されている。   As shown in FIG. 4, the brazing foil mounting device 7 has a width substantially equal to the width of the long shaft rectangular conductor 2 on the right end surface of the long shaft rectangular conductor 2 and the left front surface of the peripheral long flat conductor 3. And a vertical foil portion 6a having a height substantially equal to the thickness of the long rectangular conductor 2 and horizontal foil portions 6b and 6c extending, for example, leftward from the upper and lower ends of the vertical foil portion 6a. A U-shaped brazing foil 6 having a U-shaped cross section made of a silver brazing material is attached to the right end face of the axial-long flat conductor 2 and the front-end right-hand side of the peripheral long flat conductor 3. Here, the U-shaped brazing foil 6 is formed with a curled portion 6d that slightly curves and extends outward at the free ends of the horizontal foil portions 6b and 6c.

このロウ箔装着装置7は、図5(a)〜(c)に示すように、多数のコ字状ロウ箔6を上下方向に段積みして保持し、下端部に最下段のコ字状ロウ箔6のみを外部に取り出し可能な挿通孔7a,7bを有する2つのカートリッジ7c,7dが内装したコ字状ロウ箔の垂直箔部6aが互いに背中合わせとなる関係で僅かな間隙を隔てて平行に配置される共に、これらカートリッジ7c,7dの一方の挿通孔7aを通じてコ字状ロウ箔6を同時に押し出す例えばエアシリンダで構成された押し出し治具7eが配設されたコ字状ロウ箔供給部7fと、このコ字状ロウ箔供給部7fでコ字状ロウ箔6を受取り、軸長側平角導体2及び周長側平角導体3がそれらのロウ付け位置を対向させて所定間隔を保って位置決めしたロウ箔装着部7gに移動してコ字状ロウ箔6を軸長側平角導体2及び周長側平角導体3に装着するロウ箔移動装着機構7hとで構成されている。   As shown in FIGS. 5 (a) to 5 (c), the brazing foil mounting apparatus 7 stacks and holds a large number of U-shaped brazing foils 6 in the vertical direction, and the lowermost U-shaped at the lower end. The vertical foil portions 6a of the U-shaped wax foil in which the two cartridges 7c and 7d having insertion holes 7a and 7b through which only the wax foil 6 can be taken out are provided are back-to-back with each other and are parallel with a slight gap therebetween. The U-shaped wax foil supply unit is provided with an extrusion jig 7e composed of an air cylinder, for example, which simultaneously pushes the U-shaped wax foil 6 through one insertion hole 7a of the cartridges 7c and 7d. 7f and the U-shaped brazing foil supply portion 7f receive the U-shaped brazing foil 6, and the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 face each other with their brazing positions kept at a predetermined interval. Move to the positioned solder foil mounting part 7g It is composed of a wax foil movable mounting mechanism 7h mounting the Jo brazing foil 6 in the axial side flat conductor 2 and the circumference-side flat conductor 3.

ロウ箔移動装着機構7hは、基台7i上に、コ字状ロウ箔供給部7fに配置された2つのカートリッジ7c,7dから同時に押し出される2つのコ字状ロウ箔6を個別に保持する保持部7j及び7kが形成された構成を有する。各保持部7j及び7kのそれぞれは、基台7iに固定された背面板7mとこの背面板7mの基台7iからコ字状ロウ箔6の高さより僅かに高い高さ位置より上方に取付けられた平面から見てコ字状の覆い板7nとで、下段の背面板7mを除く3方を開放した構成とされている。そして、保持部7j及び7k内に、保持用重錘7oが上下方向に摺動自在に配設されている。この保持用重錘7oは、覆い板7nの下側の開放部の高さより高い高さを有すると共に、コ字状ロウ箔6の奥行き及び長さと略等しい奥行き及び長さを有し、且つコ字状ロウ箔6の装入側の下端面にコ字状ロウ箔6の高さより僅かに高い高さ位置から右下がりに傾斜して下端面に達する傾斜案内面7pが形成され、さらにコ字状ロウ箔6が変形しない程度の重さに設定されている。   The brazing foil moving and mounting mechanism 7h holds two U-shaped brazing foils 6 that are simultaneously pushed out from the two cartridges 7c and 7d arranged in the U-shaped brazing foil supply unit 7f on the base 7i. It has a configuration in which the portions 7j and 7k are formed. Each of the holding portions 7j and 7k is attached above a height of a back plate 7m fixed to the base 7i and a height slightly higher than the height of the U-shaped brazing foil 6 from the base 7i of the back plate 7m. With the cover plate 7n having a U-shape when viewed from the plane, the three sides excluding the lower back plate 7m are opened. A holding weight 7o is slidably disposed in the vertical direction in the holding portions 7j and 7k. The holding weight 7o has a height that is higher than the height of the lower open portion of the cover plate 7n, and has a depth and a length that are substantially equal to the depth and length of the U-shaped brazing foil 6. An inclined guide surface 7p is formed on the lower end surface on the charging side of the U-shaped wax foil 6 so as to incline downward from the height position slightly higher than the height of the U-shaped wax foil 6 and reach the lower end surface. The weight of the brazing foil 6 is set so as not to deform.

このロウ箔移動装着機構7hは、先ず、保持部7j及び7kにコ字状ロウ箔6を保持していない状態では、保持用重錘7oの下面が基台7iに接触して、その上端面が覆い板7nの下端面より上方となって、覆い板7nによって保持用重錘7oが外方に飛び出すことなく保持されている。この状態で、ロウ箔移動装着機構7hを搬送機構によってコ字状ロウ箔供給部7eに移動させ、その保持部7j及び7kの開放部をカートリッジ7c,7dの挿通孔7bに近接対向させる。   First, in the state where the U-shaped brazing foil 6 is not held by the holding portions 7j and 7k, the lower surface of the holding weight 7o contacts the base 7i, and the upper end surface Becomes higher than the lower end surface of the cover plate 7n, and the holding weight 7o is held by the cover plate 7n without jumping outward. In this state, the wax foil moving and mounting mechanism 7h is moved to the U-shaped wax foil supply part 7e by the transport mechanism, and the open parts of the holding parts 7j and 7k are brought close to and opposed to the insertion holes 7b of the cartridges 7c and 7d.

この状態で、押し出し治具7eを作動させて両カートリッジ7c,7dの最下段に保持されているコ字状ロウ箔6を同時に押し出して保持部7j及び7kに装入する。これら保持部7j及び7kでは、コ字状ロウ箔6が装入されることにより、その先端が保持用重錘7oの傾斜案内面7pに接触することにより、コ字状ロウ箔6の装入に応じて保持用重錘7oが上方に持ち上げられ、コ字状ロウ箔6の装入が完了すると、その上面に保持用重錘7oが載置された状態となり、この保持用重錘7oの重さによってコ字状ロウ箔6が保持部7j及び7kより抜け出すことなく保持される。このコ字状ロウ箔6の保持状態では、そのカール部6dが基台7i及び覆い板7nより外方に突出させた状態で保持される。   In this state, the pushing jig 7e is operated to simultaneously push out the U-shaped brazing foil 6 held at the lowermost stage of both the cartridges 7c and 7d and insert it into the holding portions 7j and 7k. In these holding portions 7j and 7k, when the U-shaped brazing foil 6 is inserted, the leading end thereof comes into contact with the inclined guide surface 7p of the holding weight 7o, whereby the U-shaped brazing foil 6 is inserted. Accordingly, when the holding weight 7o is lifted upward and the insertion of the U-shaped wax foil 6 is completed, the holding weight 7o is placed on the upper surface, and the holding weight 7o The U-shaped wax foil 6 is held by the weight without coming out of the holding portions 7j and 7k. In the holding state of the U-shaped brazing foil 6, the curled portion 6d is held in a state of protruding outward from the base 7i and the cover plate 7n.

その後、ロウ箔移動装着機構7hを、搬送機構を作動させることにより、コ字状ロウ箔供給部7fからロウ箔装着部7gに移動させ、保持部7j及び7kに保持したコ字状ロウ箔6のカール部6dが形成された開放端面を軸長側平角導体2の右端面及び周長側平角導体3の前端側左側面に対向させるように、両平角導体2及び3の中間位置に停止させ、この状態からロウ箔移動装着機構7hを左方に移動させて、保持部7jに保持されているコ字状ロウ箔6を軸長側平角導体2の右端面に嵌合し、その後ロウ箔移動装着機構7hを右方の周長側平角導体3側に移動させることにより、コ字状ロウ箔6が軸長側平角導体2に嵌合されているので、このコ字状ロウ箔6が保持部7jから離脱して、保持用重錘7oが自重によって下降して基台6iの上面に接触する初期位置に復帰する。   Thereafter, the wax foil moving and mounting mechanism 7h is moved from the U-shaped wax foil supply section 7f to the wax foil mounting section 7g by operating the transport mechanism, and the U-shaped wax foil 6 held by the holding sections 7j and 7k. The open end surface on which the curled portion 6d is formed is stopped at an intermediate position between the rectangular conductors 2 and 3 so as to oppose the right end surface of the long rectangular conductor 2 and the front left side surface of the circumferential rectangular conductor 3. From this state, the brazing foil moving and mounting mechanism 7h is moved to the left, and the U-shaped brazing foil 6 held by the holding portion 7j is fitted to the right end surface of the long rectangular conductor 2, and then the brazing foil The U-shaped brazing foil 6 is fitted to the axial-long side rectangular conductor 2 by moving the movable mounting mechanism 7h to the right peripheral long-side rectangular conductor 3 side. The holding weight 7o is detached from the holding portion 7j and lowered by its own weight, so that the base 6i. It returns to the initial position in contact with the upper surface.

その後、保持部7kに保持されているコ字状ロウ箔6を周長側平角導体3の前端側右側面に嵌合させてからロウ箔移動装着機構7hを中間位置に復帰させることにより、周長側平角導体3に嵌合したコ字状ロウ箔6が保持部7kから離脱して保持用重錘7oが自重によって下降して基台6iの上面に接触する初期位置に復帰する。
このコ字状ロウ箔の装着完了後に、ロウ箔移動装着機構7hをコ字状ロウ箔供給部7eに移動させることにより、再度カートリッジ7c,7dに格納されたコ字状ロウ箔6を保持部7j及び7kに保持して、上記動作を繰り返す。
After that, the U-shaped brazing foil 6 held by the holding portion 7k is fitted to the right side surface of the front end side of the circumferential long side rectangular conductor 3, and then the brazing foil moving mounting mechanism 7h is returned to the intermediate position, thereby The U-shaped brazing foil 6 fitted to the long side flat conductor 3 is detached from the holding portion 7k, and the holding weight 7o is lowered by its own weight and returns to the initial position where it contacts the upper surface of the base 6i.
After completing the mounting of the U-shaped brazing foil, the U-shaped brazing foil 6 stored in the cartridges 7c and 7d is held again by moving the brazing foil moving mounting mechanism 7h to the U-shaped brazing foil supply unit 7e. 7j and 7k, and the above operation is repeated.

図2において、位置決め保持機構8は、軸長側平角導体2の前側面を高周波加熱インダクタ4の左側で受けて、軸長側平角導体2の前後方向の位置決めを行う軸長側位置決め治具8aと、この軸長側位置決め治具8aと軸長側平角導体3を挟む反対側に対向して配置された軸長側平角導体2の後側面及び上面を同時に押し当てる軸長側固定チャック8bと、周長側平角導体3の左側面を高周波加熱インダクタ4の後方側で受けて、周長側平角導体3の左右方向の位置決めを行う周長側位置決め治具8cと、この周長側位置決め治具8cと周長側平角導体3を挟む反対側に対向して配置された周長側平角導体3の右側面に押し当てる押し当て治具8dと、周長側位置決め治具8cの後方側で周長側平角導体3の左側面及び上面を同時に押し当てる周長側固定チャック8eと、高周波加熱インダクタ4の右側面と対向して周長側平角導体3の前端側の右側面に押し当てる押し当てセラミック板8fと、この押し当てセラミック板8fを周長側平角導体3の左右方向の熱膨張を許容するように押圧する弾性体としての押圧スプリング8gとで構成されている。そして、この位置決め保持機構8で、軸長側平角導体2及び周長側平角導体3をそのコ字状ロウ箔6が背中合わせに当接する突き合わせ位置Pを高周波加熱インダクタ4の貫通孔44eに対応する位置とする関係で位置決め保持する。   In FIG. 2, the positioning holding mechanism 8 receives the front side surface of the long shaft rectangular conductor 2 on the left side of the high-frequency heating inductor 4 and positions the long shaft rectangular conductor 2 in the front-rear direction. And an axial length side fixed chuck 8b for simultaneously pressing the rear side surface and the upper surface of the axial length side rectangular conductor 2 disposed opposite to the axial length side positioning jig 8a and the opposite side across the axial length side rectangular conductor 3; A peripheral side positioning jig 8c for receiving the left side surface of the peripheral side flat conductor 3 on the rear side of the high frequency heating inductor 4 and positioning the peripheral side flat conductor 3 in the left-right direction, and the peripheral side positioning jig A pressing jig 8d that presses against the right side surface of the circumferential long rectangular conductor 3 disposed opposite to the opposite side of the tool 8c and the circumferential long rectangular conductor 3, and a rear side of the circumferential positioning jig 8c. Simultaneously press the left side and top side of the perimeter long side rectangular conductor 3 A peripheral ceramic chuck 8e, a pressing ceramic plate 8f that opposes the right side surface of the high frequency heating inductor 4 and presses against the right side surface of the front end side of the peripheral length side rectangular conductor 3, and the pressing ceramic plate 8f has a peripheral length. It is comprised with the press spring 8g as an elastic body pressed so that the thermal expansion of the left-right direction of the side flat conductor 3 may be accept | permitted. In the positioning and holding mechanism 8, the abutting position P where the U-shaped brazing foil 6 contacts the axially long flat conductor 2 and the circumferential flat conductor 3 back to back corresponds to the through hole 44 e of the high frequency heating inductor 4. Positioning and holding in relation to position.

上側押圧機構9は、高周波加熱インダクタ4に載置された絶縁・耐熱セラミック板5上に位置決めされた軸長側平角導体2及び周長側平角導体3のコ字状ロウ箔6が装着されたロウ付け位置を左右方向に跨ぐように上下方向に可動自在に配設された押し当てセラミック治具9aと、この押し当てセラミック治具9aの上面に連結されたユニバーサル・ジョイント構造を有する押し治具9bとで構成されている。
赤外線放射温度計10は、軸長側平角導体2及び周長側平角導体3のロウ付け位置近傍に、赤色のガイドスポット光を照射して、ロウ付け位置近傍の温度を計測し、計測した温度検出情報Tdを図6(a)に示すように高周波加熱電源回路11及びシーケンサ12に出力する。
The upper pressing mechanism 9 is provided with a U-shaped brazing foil 6 of an axial long side rectangular conductor 2 and a circumferential long side rectangular conductor 3 positioned on an insulating / heat resistant ceramic plate 5 placed on the high frequency heating inductor 4. A pressing ceramic jig 9a movably arranged in the vertical direction so as to straddle the brazing position in the horizontal direction, and a pressing jig having a universal joint structure connected to the upper surface of the pressing ceramic jig 9a 9b.
The infrared radiation thermometer 10 irradiates red guide spot light in the vicinity of the brazing position of the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3, measures the temperature near the brazing position, and measures the measured temperature. The detection information Td is output to the high frequency heating power supply circuit 11 and the sequencer 12 as shown in FIG.

高周波加熱電源回路11は、赤外線放射温度計10で計測した温度検出情報Tdがフィードバック情報として入力されると共に、高周波加熱目標温度を設定する高周波加熱温度設定器13で設定された高周波加熱目標温度T* が入力され、例えば下記(1)式に示すように、高周波加熱目標温度T* から温度検出情報Tdを減算した温度偏差e(=T* −Td)に比例制御ゲインKpを乗算した値と、温度偏差eの積分値∫edtに積分制御ゲインKiを乗算した値と温度偏差eの微分値de/dtに微分制御ゲインKdを乗算した値とを加算して電源指令値Pを算出し、算出した電源指令値Pに基づいて高周波加熱インダクタ4の水冷銅パイプ46に供給する高周波電力の周波数及び電力値の一方又は双方を調整して、ロウ付け位置での加熱温度を適正値にPID制御すると共に、高周波電力データをシーケンサ12に出力する。
P=Kp・e+Ki・∫edt+Kd・de/dt ………(1)
The high-frequency heating power supply circuit 11 receives the temperature detection information Td measured by the infrared radiation thermometer 10 as feedback information, and the high-frequency heating target temperature T set by the high-frequency heating temperature setting device 13 that sets the high-frequency heating target temperature. * Is input, and, for example, as shown in the following equation (1), a value obtained by multiplying the temperature deviation e (= T * −Td) obtained by subtracting the temperature detection information Td from the high-frequency heating target temperature T * by the proportional control gain Kp The power supply command value P is calculated by adding the value obtained by multiplying the integral value ∫edt of the temperature deviation e by the integral control gain Ki and the value obtained by multiplying the differential value de / dt of the temperature deviation e by the differential control gain Kd, Based on the calculated power supply command value P, one or both of the frequency and the power value of the high-frequency power supplied to the water-cooled copper pipe 46 of the high-frequency heating inductor 4 are adjusted to heat at the brazing position. The temperature is PID controlled to an appropriate value and high frequency power data is output to the sequencer 12.
P = Kp · e + Ki · ∫edt + Kd · de / dt (1)

また、シーケンサ12では、ロウ付け位置の許容上限温度及び許容下限温度が設定され、赤外線放射温度計10から入力される温度検出情報Tdが過渡的状態を除く定常状態で許容上限温度及び許容下限温度の許容温度範囲内である場合には、警報回路14に対する警報信号の出力が停止されているが、温度検出情報Tdが許容温度範囲外となると、警報信号を警報回路14に出力して、警報音の発生及び警報表示の点灯の何れか一方又は双方を行う警報発生処理を実行する。図6(b)に示すように許容下限温度ぎりぎりで温度検出情報Tdが許容温度範囲となったときには、許容下限温度に達した時点から計測を開始し許容最低保持時間に達しないときは、警報信号を警報回路14に出力して、前記警報発生処理を実行する(A波形)。また、許容最低保持時間を超えるときは警報の出力は実行されない。警報の出力の有無に係わらずロウ付けは所定ロウ付け時間まで実行される(B波形)。所定ロウ付け時間に達すると、高周波加熱電源回路11に対して高周波加熱インダクタ本体49に対する高周波電力の供給を停止させる電力出力停止指令を出力する。さらに入力された温度検出情報Td、高周波電力データ及び警報の発生状況情報を逐次パーソナルコンピュータ15に出力して、このパーソナルコンピュータ15のハードディスク等の記憶装置に履歴情報として記憶すると共に、加熱温度推移波形を表示画面に表示する。パーソナルコンピュータ15に記憶されている履歴情報から該当するロウ付け時の温度検出情報Td、警報発生状況情報及び高周波電力データを抽出し、抽出した情報を解析することにより、ロウ付け品質状況を正確に分析することが可能となる。   Further, in the sequencer 12, the allowable upper limit temperature and the allowable lower limit temperature of the brazing position are set, and the temperature detection information Td input from the infrared radiation thermometer 10 is the allowable upper limit temperature and the allowable lower limit temperature in a steady state excluding a transient state. When the temperature detection information Td is outside the allowable temperature range, the alarm signal is output to the alarm circuit 14 and the alarm circuit 14 outputs an alarm signal. An alarm generation process is performed to perform either or both of sound generation and alarm display lighting. As shown in FIG. 6B, when the temperature detection information Td falls within the allowable temperature range just below the allowable lower limit temperature, the measurement is started from the time when the allowable lower limit temperature is reached and the allowable minimum holding time is not reached. A signal is output to the alarm circuit 14 to execute the alarm generation process (A waveform). Further, when the allowable minimum holding time is exceeded, no alarm is output. Regardless of whether or not an alarm is output, brazing is executed until a predetermined brazing time (B waveform). When the predetermined brazing time is reached, a power output stop command for stopping the supply of high-frequency power to the high-frequency heating inductor body 49 is output to the high-frequency heating power supply circuit 11. Further, the input temperature detection information Td, high frequency power data, and alarm occurrence status information are sequentially output to the personal computer 15 and stored as history information in a storage device such as a hard disk of the personal computer 15, and the heating temperature transition waveform Is displayed on the display screen. By extracting the temperature detection information Td, alarm occurrence status information and high-frequency power data at the time of brazing from the history information stored in the personal computer 15 and analyzing the extracted information, the brazing quality status is accurately determined. It becomes possible to analyze.

図6(c)に示すように、高周波電力の供給が一定にもかかわらず加熱時の上昇温度がバラツキ、例えばC波形とD波形のように許容下限温度までに達する時間が異なっても許容下限温度に達した時点からの所定ロウ付け保持時間thまで、ロウ付けを維持し、時間に達すると前記高周波加熱電源回路11に対して高周波加熱インダクタ本体49に対する高周波電力の供給を停止させる電力停止指令を出力する。   As shown in FIG. 6C, even if the supply of high-frequency power is constant, the temperature rise during heating varies, for example, even if the time to reach the allowable lower limit temperature is different as in the C waveform and D waveform, the allowable lower limit Brazing is maintained until a predetermined brazing holding time th from when the temperature is reached, and when the time is reached, the high frequency heating power supply circuit 11 stops the supply of high frequency power to the high frequency heating inductor body 49. Is output.

次に、上記実施形態の動作を説明する。
先ず、ロウ箔装着装置7のロウ箔移動装着機構7hを図5(a)〜(c)に示すようにロウ箔供給部7fに移動させて、その保持部7j及び7kの開放部をカートリッジ7c及び7dの挿通孔7bに近接対向させる。この状態で、押し出し治具7eでカートリッジ7c及び7dからコ字状ロウ箔6を同時に押し出して、ロウ箔移動装着機構7hの保持部7j及び7kに保持用重錘7oを上方に押し上げながら保持させる。これと同時に又はその前後にロウ付け対象となる軸長側平角導体2及び周長側平角導体3をロウ箔装着装置7のロウ箔装置部7gの所定位置に、図5(c)に示すように、ロウ付け位置となる軸長側平角導体2の前端面と周長側平角導体3の前端側左側面とを所定間隔を保って対向させて位置決め保持する。
Next, the operation of the above embodiment will be described.
First, as shown in FIGS. 5A to 5C, the brazing foil moving and mounting mechanism 7h of the brazing foil mounting apparatus 7 is moved to the brazing foil supply unit 7f, and the holding portions 7j and 7k are opened at the cartridge 7c. And 7d through the insertion hole 7b. In this state, the U-shaped wax foil 6 is simultaneously extruded from the cartridges 7c and 7d by the extrusion jig 7e, and the holding weight 7o is held upward while being held upward by the holding portions 7j and 7k of the wax foil moving mounting mechanism 7h. . At the same time or before and after this, the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 to be brazed are placed at predetermined positions of the brazing foil device portion 7g of the brazing foil mounting device 7 as shown in FIG. Then, the front end face of the axial length side rectangular conductor 2 serving as the brazing position and the front end side left side face of the circumferential length side rectangular conductor 3 are positioned and held facing each other with a predetermined distance therebetween.

次いで、ロウ箔移動装着機構7hをロウ箔装着部7gに下降させて、その保持部7j及び7kで保持したコ字状ロウ箔6をそれぞれ軸長平角導体2の前端面及び周長側平角導体3の前端側左側面と対向させる。次いで、ロウ箔移動装着機構7hを左方に移動させて、保持部7jで保持しているコ字状ロウ箔6を軸長側平角導体2の前端面に嵌合させてからロウ箔移動装着機構7hを右方に移動させて、保持部7kで保持しているコ字状ロウ箔6を周長側平角導体3の前端側左側面に嵌合させる。その後、ロウ箔移動装着機構7hを左右方向の中央位置に復帰させてから上昇させてコ字状ロウ箔供給部7fに戻す。   Next, the brazing foil moving and mounting mechanism 7h is lowered to the brazing foil mounting portion 7g, and the U-shaped brazing foil 6 held by the holding portions 7j and 7k is respectively connected to the front end face of the axial long rectangular conductor 2 and the peripheral long side rectangular conductor. 3 is opposed to the left side surface on the front end side. Next, the brazing foil moving and mounting mechanism 7h is moved to the left, and the U-shaped brazing foil 6 held by the holding portion 7j is fitted to the front end surface of the long shaft rectangular conductor 2 and then the brazing foil is moved and mounted. The mechanism 7h is moved to the right, and the U-shaped brazing foil 6 held by the holding portion 7k is fitted to the left side surface of the front end side of the circumferential long side rectangular conductor 3. Thereafter, the wax foil moving and attaching mechanism 7h is returned to the center position in the left-right direction and then raised and returned to the U-shaped solder foil supply unit 7f.

コ字状ロウ箔6が装着された軸長側平角導体2及び周長側平角導体3は、搬送ロボット等の搬送手段によって図1に示す高周波加熱インダクタ4上に配置された絶縁・耐熱セラミック平板5上に移送され、図2に示すように軸長側平角導体2の前端面を位置決め治具8aに当接させると共に、周長側平角導体3の左側面を位置決め治具8cに当接させて、軸長側平角導体2の前端面と周長側平角導体3の前端面とが面一となり、両平角導体2及び3のロウ付け位置に装着されたコ字状ロウ箔6同士を背中合わせに突き合わされて、その突き合わせ位置Pが図1に示すように高周波加熱インダクタ4の貫通孔44eの中央位置となるように押し当て治具8dで周長側平角導体3を押し付けて位置決めし、この位置決めが完了すると、固定チャック8b及び8eで軸長側平角導体2及び周長側平角導体3を固定保持すると共に、押し当てセラミック板8fを周長側平角導体3の前端側右側面を押圧スプリング8gを介して押し当てる。その後、上側押圧機構9の押し当てセラミック治具9aで軸長側平角導体2及び周長側平角導体3のロウ付け位置を跨いで押圧することにより、軸長側平角導体2及び周長側平角導体3を絶縁・耐熱セラミック平板5に密着させて、軸長側平角導体2及び周長側平角導体3の下面と高周波加熱インダクタ4の平坦面とを一定間隔に保持する。   An axial long flat conductor 2 and a peripheral long flat conductor 3 to which a U-shaped brazing foil 6 is attached are insulated and heat resistant ceramic flat plates disposed on the high frequency heating inductor 4 shown in FIG. 1 by a transfer means such as a transfer robot. 2, the front end surface of the axial length side rectangular conductor 2 is brought into contact with the positioning jig 8 a and the left side surface of the circumferential length side rectangular conductor 3 is brought into contact with the positioning jig 8 c as shown in FIG. 2. Thus, the front end surface of the long rectangular conductor 2 and the front end surface of the peripheral rectangular conductor 3 are flush with each other, and the U-shaped brazing foils 6 mounted at the brazing positions of both the rectangular conductors 2 and 3 are back to back. 1, the circumferential side rectangular conductor 3 is pressed and positioned by the pressing jig 8 d so that the abutting position P becomes the center position of the through hole 44 e of the high frequency heating inductor 4 as shown in FIG. When positioning is complete, the fixed chuck 8b and the axial length side flat conductor 2 and the circumference-side flat conductor 3 is fixed held in 8e, pressing the ceramic plate 8f presses the front end right side of the perimeter side flat conductor 3 via the compression spring 8 g. Then, the axial length side rectangular conductor 2 and the circumferential length side rectangular are pressed by pressing the brazing positions of the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 with the pressing ceramic jig 9a of the upper pressing mechanism 9. The conductor 3 is brought into close contact with the insulating / heat-resistant ceramic flat plate 5, and the lower surfaces of the axial long side rectangular conductor 2 and the circumferential long side rectangular conductor 3 and the flat surface of the high frequency heating inductor 4 are held at a constant interval.

この軸長側平角導体2及び周長側平角導体3の固定保持が完了すると、例えばシーケンサ12から高周波加熱電源回路11に対して高周波電力の供給を開始する電力供給指令を出力すると共に、水冷銅パイプ46内への冷却水の通水を開始する。高周波加熱電源回路11ではシーケンサ12からの電力供給指令を受けると、高周波加熱インダクタ4の高周波加熱インダクタ本体49に対して所定周波数で所定電力値の高周波電力の供給を開始する。   When the fixed holding of the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 is completed, for example, the sequencer 12 outputs a power supply command for starting the supply of high frequency power to the high frequency heating power supply circuit 11, and the water-cooled copper The cooling water flow into the pipe 46 is started. When receiving a power supply command from the sequencer 12, the high-frequency heating power supply circuit 11 starts to supply high-frequency power having a predetermined power value at a predetermined frequency to the high-frequency heating inductor body 49 of the high-frequency heating inductor 4.

このように、高周波加熱インダクタ本体49に対して高周波電力を供給すると、水冷銅パイプ46の加熱部46h及び46cにおける積層コア48及び47で形成される磁界によって、これらと対向している軸長側平角導体2及び周長側平角導体3のロウ付け位置に装着されたコ字状ロウ箔6近傍に二次電流が誘導されて加熱される。
この加熱によって赤外線放射温度計10で計測されるロウ付け位置の温度が高周波加熱電源回路11にフィードバックされ、この高周波加熱電源回路11でPID制御が行われて、赤外線放射温度計10で計測される温度が設定温度範囲内となるように高周波加熱インダクタ4の高周波加熱インダクタ本体49に供給する高周波電力の周波数又は電力値の何れか一方又は双方が制御される。
As described above, when high-frequency power is supplied to the high-frequency heating inductor body 49, the axial length side facing these is formed by the magnetic field formed by the laminated cores 48 and 47 in the heating parts 46 h and 46 c of the water-cooled copper pipe 46. A secondary current is induced in the vicinity of the U-shaped brazing foil 6 mounted at the brazing position of the flat rectangular conductor 2 and the circumferential long flat rectangular conductor 3 and heated.
By this heating, the temperature at the brazing position measured by the infrared radiation thermometer 10 is fed back to the high-frequency heating power circuit 11, PID control is performed by the high-frequency heating power circuit 11, and the temperature is measured by the infrared radiation thermometer 10. Either or both of the frequency and the power value of the high-frequency power supplied to the high-frequency heating inductor body 49 of the high-frequency heating inductor 4 are controlled so that the temperature falls within the set temperature range.

このとき、高周波加熱インダクタ本体49とロウ付け対象となる軸長側平角導体2及び周長側平角導体3との間に段差を生じることがないと共に、これら軸長側平角導体2及び周長側平角導体3と高周波加熱インダクタ本体49の加熱部46h,46c及び積層コア47,48との間の距離が一定値となるので、コ字状ロウ箔6が装着されるロウ付け位置が均一に加熱される。   At this time, there is no step between the high-frequency heating inductor body 49 and the axial length side rectangular conductor 2 and the peripheral length side rectangular conductor 3 to be brazed, and the axial length side rectangular conductor 2 and the peripheral length side. Since the distance between the flat conductor 3 and the heating parts 46h and 46c of the high-frequency heating inductor body 49 and the laminated cores 47 and 48 is a constant value, the brazing position where the U-shaped brazing foil 6 is mounted is heated uniformly. Is done.

そして、赤外線放射温度計10で計測されるロウ付け位置の温度が設定温度範囲内となると、許容下限温度に達した時点から計測を開始し、許容最低保持時間に達しないときは、警報信号を警報回路14に出力して、前記警報発生処理を実行する。すなわち、警報音を発するか又は警報ランプの点灯等の警報表示を行うことにより、オペレータに警報を発する。また、許容最低保持時間を超えるときは警報の出力は実行されない。警報の出力の有無に係わらずロウ付けは所定ロウ付け時間まで実行される。また、許容下限温度に最初から達しない場合は、所定ロウ付け時間以下に設定された時間に達した時点で前記の警報発生処理を実行する。さらに、前記温度範囲の許容上限温度を所定時間超えて加熱温度が維持されたときに前記シーケンサ12から電力出力停止指令が高周波加熱電源回路11に出力され、これに応じて高周波加熱電源回路11で高周波加熱インダクタ本体49に対する高周波電力の供給が停止される。   When the temperature of the brazing position measured by the infrared radiation thermometer 10 falls within the set temperature range, the measurement is started from the time when the allowable lower limit temperature is reached, and when the allowable minimum holding time is not reached, an alarm signal is output. Output to the alarm circuit 14 to execute the alarm generation process. That is, an alarm is issued to the operator by generating an alarm sound or performing an alarm display such as lighting of an alarm lamp. Further, when the allowable minimum holding time is exceeded, no alarm is output. Regardless of whether an alarm is output, brazing is performed until a predetermined brazing time. If the allowable lower limit temperature is not reached from the beginning, the alarm generation process is executed when a time set to be equal to or shorter than the predetermined brazing time is reached. Further, when the heating temperature is maintained exceeding the allowable upper limit temperature of the temperature range for a predetermined time, a power output stop command is output from the sequencer 12 to the high-frequency heating power supply circuit 11, and the high-frequency heating power supply circuit 11 responds accordingly. The supply of high-frequency power to the high-frequency heating inductor body 49 is stopped.

このように、軸長側平角導体2及び周長側平角導体3が高周波加熱によって設定温度範囲に制御されることにより、コ字状ロウ箔6が均一に溶融して、軸長側平角導体2の前端面及び周長側平角導体3の左側面間の突き合わせ位置における垂直板部6aが溶融してその体積が減少した場合に、水平板部6b及び6cも同時に溶融状態となっているので、これら水平板部6b及び6cの溶融分が突き合わせ位置Pに集まって余盛りが形成されると共に、円弧状のフィレットも形成されることにより、突き合わせ位置の溶融ロウ材が不足して凹部が形成されることを確実に防止することができ、オペレータが差しロウを行う必要もない。   In this way, the axial-long rectangular conductor 2 and the circumferential-long rectangular conductor 3 are controlled to a set temperature range by high-frequency heating, whereby the U-shaped brazing foil 6 is uniformly melted and the axial-long rectangular conductor 2 When the vertical plate portion 6a at the abutting position between the front end surface and the left side surface of the circumferential long side rectangular conductor 3 is melted and its volume is reduced, the horizontal plate portions 6b and 6c are also in a molten state at the same time. The melted portions of the horizontal plate portions 6b and 6c gather at the butting position P to form a surplus, and an arcuate fillet is also formed, so that the molten brazing material at the butting position is insufficient and a recess is formed. This can be surely prevented, and there is no need for the operator to perform a row soldering.

この軸長側平角導体2及び周長側平角導体3の高周波加熱状態が継続されることにより、軸長側平角導体2及び周長側平角導体3に熱膨張を生じることになるが、周長側平角導体3はその高周波加熱インダクタ4に対応する前端側の右側面が押圧スプリング8gを介して押し当てセラミック治具8fで保持されているので、押圧スプリング8gが収縮することにより、軸長側平角導体2及び周長側平角導体2の熱膨張を許容することができ、軸長側平角導体2及び周長側平角導体3の突き合わせ位置Pでの熱膨張によるせり上がりやせり下がりを確実に防止することができ、軸長側平角導体2及び周長側平角導体3と高周波加熱インダクタ本体49の加熱部46h,46cと積層コア47,48との間隔を一定に保持することができる。   By continuing the high-frequency heating state of the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3, thermal expansion occurs in the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3. Since the right side surface on the front end side corresponding to the high-frequency heating inductor 4 is held by the pressing ceramic jig 8f through the pressing spring 8g, the side flat conductor 3 is contracted by the pressing spring 8g, so that the axial length side The thermal expansion of the flat rectangular conductor 2 and the peripheral long side rectangular conductor 2 can be allowed, and the rising and falling due to the thermal expansion at the abutting position P of the axial long flat conductor 2 and the peripheral long rectangular conductor 3 are ensured. This can prevent the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3, the heating portions 46 h and 46 c of the high frequency heating inductor body 49, and the laminated cores 47 and 48 from being kept constant.

その後、ロウ付け加熱時間が設定時間に達すると、シーケンサ12から電力出力停止指令が高周波加熱電源回路11に出力され、これに応じて高周波加熱電源回路11で高周波加熱インダクタ本体49に対する高周波電力の供給が停止され、これによって軸長側平角導体2及び周長側平角導体3の誘導加熱が終了され、その後冷却されてロウ材が完全に固化したら上側押圧機構9を上方に退避させると共に、押し当て治具8d及び押し当てセラミック治具8fを右方に退避させてから固定チャック8b及び8eを解放して、ロウ付けされた軸長側平角導体2及び周長側平角導体3を所要の搬送機構で高周波加熱インダクタ4上から外部に搬送する。   Thereafter, when the brazing heating time reaches the set time, a power output stop command is output from the sequencer 12 to the high-frequency heating power supply circuit 11, and in response thereto, the high-frequency heating power supply circuit 11 supplies high-frequency power to the high-frequency heating inductor body 49. As a result, the induction heating of the long shaft rectangular conductor 2 and the long rectangular conductor 3 is finished, and after cooling and the brazing material is completely solidified, the upper pressing mechanism 9 is retracted upward and pressed. After the jig 8d and the pressing ceramic jig 8f are retracted to the right, the fixed chucks 8b and 8e are released, and the axially long rectangular conductor 2 and the circumferentially long rectangular conductor 3 that have been brazed are transported as required. Then, it is conveyed from above the high frequency heating inductor 4 to the outside.

ここで、前記軸長側平角導体及び前記周長側平角導体のロウ付け位置でのロウ付け部において、ロウ付け終了後、自然冷却の代わりに直後に直ちにロウ付け部をガスノズル機構102により強制冷却することも可能である。この方法によれば冷却時間を半分以下に短縮することができ、全体のロウ付け作業時間を短縮することができる。
このとき、軸長側平角導体2及び周長側平角導体3は、絶縁・耐熱セラミック平板5上に載置されており、ロウ付け終了後所定時間保持すれば、ロウ付けされた両平角導体2及び3に付着して離れないということがなく、また繰り返しロウ付けを行っても焼損や破損することがないので、人手作業による交換の煩わしさがなくなるだけでなく、ロウ付けにおける自動化への支障になることがない。
Here, in the brazing portion at the brazing position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, the brazing portion is immediately forcedly cooled by the gas nozzle mechanism 102 immediately after brazing, instead of natural cooling. It is also possible to do. According to this method, the cooling time can be shortened to half or less, and the entire brazing work time can be shortened.
At this time, the axial long side rectangular conductor 2 and the circumferential long side rectangular conductor 3 are placed on the insulating / heat-resistant ceramic flat plate 5. 3 and 3 are not attached to and separated from each other, and repeated brazing does not cause burnout or damage. This eliminates the troublesome manual replacement, and also hinders automation in brazing. Never become.

このように、上記実施形態によると、軸長側平角導体2及び周長側平角導体3の突き合わせ位置Pでのロウ付けを自動的に容易に行うことができる。このとき、軸長側平角導体2及び周長側平角導体3のロウ付け位置にコ字状ロウ箔6をロウ箔装着装置7で装着してから高周波加熱インダクタ4の平坦面に配置した絶縁・耐熱セラミック平板5に載置して位置決め保持機構8で位置決め保持したのち高周波加熱インダクタ4に高周波加熱電源回路11から高周波電力を供給することにより、軸長側平角導体2及び周長側平角導体3のロウ付け位置を均一に誘導加熱してコ字状ロウ箔6を溶融させるので、溶融したロウ材が突き合わせ位置Pに集まって余盛り状態となることにより、この突き合わせ位置Pでロウ材が不足して凹状となるロウ付け不良を確実に防止することができると共に、使用するロウ材量が一定化される。また、必要により、図1(b)に示すように、位置決め保持されたコ字状ロウ箔の接合部の上にロウ棒配置装置101によってロウ棒100を載せてロウ付けすることもできる。この方法は、余盛りの高さをコ字状ロウ箔よりも高く確保したい場合、あるいはロウ付け保持時間をより長く確保したい場合に便利である。単にロウ棒を載せたから余盛り高さが単純に確保されるというのではなく、溶けているロウ材は液状ながらある粘性をもっており、重力で単純にたれ落ちるという現象を防ぐだけでなく、毛細管現象で前記コ字状ロウ箔の接合箇所に浸透していくと同時にロウ棒の体積重量分が粘性をもっているためロウの急激なたれ落ち(落下)を防ぎ、ロウ付け保持時間をより長く確保できるというメリットが付加される。ここである程度の粘性とロウ棒の体積重量分があるからその分保持時間が長くなるということだけでなく、ロウ付けされている上側(上面)と下側(下面)とにおいてロウ材量の多い上側と少ない下側との一種の引っ張り合いがあり、重力と毛細管現象との下側に働く力よりもロウ材の体積重量分と粘性分との力が僅かに勝るためにロウの下側への移動が極めてゆっくりとなり、その分ロウ付け保持時間を長くしても余盛り高さの必要な分を確保できるということになる。ロウ付け保持時間を長く確保できるということは自動ロウ付けの場合、最適ロウ付け条件の範囲を結果的に広くできるということにもつながる。   Thus, according to the above embodiment, the axial length side rectangular conductor 2 and the circumferential length side rectangular conductor 3 can be automatically and easily brazed at the butting position P. At this time, the U-shaped brazing foil 6 is mounted on the brazing position of the axial long side rectangular conductor 2 and the circumferential long side rectangular conductor 3 by the brazing foil mounting device 7 and then disposed on the flat surface of the high frequency heating inductor 4. After being placed on the heat-resistant ceramic flat plate 5 and positioned and held by the positioning and holding mechanism 8, high-frequency power is supplied from the high-frequency heating power supply circuit 11 to the high-frequency heating inductor 4. Since the U-shaped brazing foil 6 is melted by induction heating evenly at the brazing position, the brazing material is gathered at the butting position P and becomes overfilled. As a result, it is possible to reliably prevent the concave brazing, and the amount of brazing material to be used is made constant. If necessary, as shown in FIG. 1 (b), the brazing rod 100 can be placed and brazed by the brazing rod arrangement device 101 on the joint portion of the U-shaped brazing foil that has been positioned and held. This method is convenient when it is desired to secure the height of the surplus higher than the U-shaped brazing foil, or when it is desired to secure a longer brazing holding time. Since the soldering height is not simply secured because the solder rod is simply placed, the molten brazing material has a certain viscosity while being in a liquid state, and not only prevents the phenomenon of dripping down due to gravity, but also the capillary phenomenon. As the volume of the brazing rod penetrates into the joint of the U-shaped brazing foil, the brazing rod has a viscosity so that it can prevent dripping (falling) of the brazing and secure a longer brazing holding time. Merits are added. Here, there is a certain amount of viscosity and the volume weight of the brazing rod, so that not only the holding time becomes longer, but the amount of brazing material is large on the upper side (upper surface) and the lower side (lower surface) that are brazed. There is a kind of tension between the upper side and the lower side, and because the force of volume and viscosity of the brazing material is slightly higher than the force acting on the lower side of gravity and capillary action, the lower side of the wax Therefore, even if the brazing holding time is lengthened, the necessary extra height can be secured. The fact that the brazing holding time can be secured for a long time also means that the range of optimum brazing conditions can be widened as a result in the case of automatic brazing.

また、赤外線放射温度計10でロウ付け位置の温度を検出し、この計測温度情報を高周波加熱電源回路11に供給して、高周波加熱温度設定器13で設定した高周波加熱目標温度との偏差に基づいて高周波加熱インダンク4の高周波加熱インダクタ本体49に供給する高周波電力の周波数及び/又は電力値を制御することにより、ロウ付け位置の温度を設定温度範囲に確実に維持することができ、熟練者による高周波電力制御を必要とすることなく、正確なロウ付け処理を行うことができる。   Further, the temperature of the brazing position is detected by the infrared radiation thermometer 10, and this measured temperature information is supplied to the high-frequency heating power supply circuit 11, and based on the deviation from the high-frequency heating target temperature set by the high-frequency heating temperature setting device 13. By controlling the frequency and / or power value of the high-frequency power supplied to the high-frequency heating inductor body 49 of the high-frequency heating inductor 4, the brazing position temperature can be reliably maintained within the set temperature range. Accurate brazing processing can be performed without requiring high-frequency power control.

しかも、赤外線放射温度計10で計測した計測温度がシーケンサ12に供給され、このシーケンサ12で、計測温度が予め設定した設定温度範囲外となったときに警報回路14に対して警報信号を出力して、この警報回路でオペレータに対して警報を発することができ、オペレータが異常発生を確実に認識することができる。さらに、前記温度範囲の許容上限温度を所定時間超えて加熱温度が維持されたときに前記シーケンサ12から電力出力停止指令が高周波加熱電源回路11に出力され、これに応じて高周波加熱電源回路11に出力され、これに応じて高周波加熱電源回路11で高周波加熱インダクタ本体49に対する高周波電力の供給が停止される。これは万一、赤外線放射温度計による計測温度情報に基づく一定温度の制御が働かずに加熱の上昇が暴走した場合には、許容上限温度を超えて所定時間で高周波電力の供給が停止すればオーバーヒートによる機器の障害が防げることになる。このとき、赤外線放射温度計10での計測温度と高周波加熱電源回路11から出力される高周波電力情報とがパーソナルコンピュータ15に供給されて、ハードディスク等の記憶手段に履歴情報として記憶されると共に、ロウ付け位置での温度推移状況がディスプレイに表示されるので、異常発生状況の把握を容易に行うことができる。   In addition, the measured temperature measured by the infrared radiation thermometer 10 is supplied to the sequencer 12, and when the measured temperature falls outside the preset temperature range, an alarm signal is output to the alarm circuit 14. Thus, the alarm circuit can issue an alarm to the operator, and the operator can reliably recognize the occurrence of the abnormality. Further, when the heating temperature is maintained exceeding the allowable upper limit temperature of the temperature range for a predetermined time, a power output stop command is output from the sequencer 12 to the high-frequency heating power supply circuit 11, and the high-frequency heating power supply circuit 11 is responded accordingly. In response to this, the high-frequency heating power supply circuit 11 stops the supply of high-frequency power to the high-frequency heating inductor body 49. In the unlikely event that the control of the constant temperature based on the temperature information measured by the infrared thermometer does not work and the increase in heating goes out of control, the supply of high-frequency power will stop after a predetermined time exceeding the allowable upper limit temperature. The failure of the equipment due to overheating can be prevented. At this time, the temperature measured by the infrared radiation thermometer 10 and the high-frequency power information output from the high-frequency heating power supply circuit 11 are supplied to the personal computer 15 and stored as history information in a storage means such as a hard disk. Since the temperature transition status at the attachment position is displayed on the display, it is possible to easily grasp the abnormality occurrence status.

さらに、高周波加熱インダクタ本体49を構成する水冷銅パイプ46の加熱部46c及び46hからの折り返し部がこれら加熱部46c及び46hの下側に形成されているので、高周波加熱インダクタ4の幅を狭くすることが可能となり、高周波加熱インダクタ4を小型化することができる。
なお、上記実施形態においては、水冷パイプを銅パイプで形成した場合について説明したが、これに限定されるものではなく、導電性金属で形成することができ、また角筒状に形成する場合に限らず、円筒状に形成するようにしてもよい。
Further, since the folded portions from the heating portions 46c and 46h of the water-cooled copper pipe 46 constituting the high-frequency heating inductor body 49 are formed below the heating portions 46c and 46h, the width of the high-frequency heating inductor 4 is reduced. Thus, the high-frequency heating inductor 4 can be reduced in size.
In addition, in the said embodiment, although the case where the water-cooled pipe was formed with the copper pipe was demonstrated, it is not limited to this, When it can form with a conductive metal and it forms in a rectangular tube shape Not limited to this, it may be formed in a cylindrical shape.

また、上記実施形態においては、温度計測手段として赤外線放射温度計10を適用した場合について説明したが、これに限定されるものではなく、他の非接触式の温度計を適用することができる。
さらに、上記実施形態においては、コ字状ロウ箔6を適用した場合について説明したが、これに限定されるものではなく、コ字状ロウ箔6の垂直板部6aを背中合わせに合体させた両側コ字状部を有するI字状ロウ箔を適用し、このI字状ロウ箔の一方のコ字状部を例えば軸長側平角導体2の前端面に装着し、次いで周長側平角導体3の前端側左側面をI字状ロウ箔の他方のコ字状部に装入するようにしてもよい。また、コ字状ロウ箔6としては、銀ロウ材で形成する場合に限らず、りん銅ロウ材等の他のロウ材を適用するとこができる。
Moreover, in the said embodiment, although the case where the infrared radiation thermometer 10 was applied as a temperature measurement means was demonstrated, it is not limited to this, Other non-contact-type thermometers can be applied.
Furthermore, in the said embodiment, although the case where the U-shaped brazing foil 6 was applied was demonstrated, it is not limited to this, The both sides which united the vertical board part 6a of the U-shaped brazing foil 6 back to back An I-shaped brazing foil having a U-shaped portion is applied, and one U-shaped portion of this I-shaped brazing foil is attached to, for example, the front end surface of the long axial rectangular conductor 2 and then the peripheral long rectangular conductor 3 The left side surface of the front end side may be inserted into the other U-shaped part of the I-shaped brazing foil. Further, the U-shaped brazing foil 6 is not limited to being formed of a silver brazing material, and other brazing materials such as phosphor copper brazing material can be applied.

さらにまた、上記実施形態においては、絶縁・耐熱セラミック平板5を2枚の板部5a及び5bで構成した場合について説明したが、これに限定されるものではなく、高周波加熱インダクタ4の貫通孔44eに対応する切り込み部を設けた1枚の絶縁・耐熱セラミック板で構成するようにしてもよい。
なおさらに、上記実施形態においては、筐体44をエポキシガラスで構成した場合について説明したが、これに限定されるものではなく、所定の機械的強度を有する非導電性の合成樹脂材で構成するようにしてもよい。
Furthermore, in the above-described embodiment, the case where the insulating / heat-resistant ceramic flat plate 5 is configured by the two plate portions 5a and 5b has been described. However, the present invention is not limited to this, and the through hole 44e of the high-frequency heating inductor 4 is used. It may be configured by a single insulating / heat-resistant ceramic plate provided with a notch corresponding to the above.
Furthermore, in the above embodiment, the case where the casing 44 is made of epoxy glass has been described. However, the present invention is not limited to this, and is made of a non-conductive synthetic resin material having a predetermined mechanical strength. You may do it.

また、上記実施形態においては、シーケンサ12にパーソナルコンピュータ15を接続して、履歴情報を記憶すると共に、温度推移状況を表示するようにした場合について説明したが、これに限定されるものではなく、シーケンサ12自体に履歴情報記憶機能と、温度推移状況表示機能を設けるようにしてもよく、あるいはパーソナルコンピュータ15に代えて履歴情報記憶機能及び温度推移状況表示機能を備えた専用の機器を設けるようにしてもよい。   Moreover, in the said embodiment, although the personal computer 15 was connected to the sequencer 12 and the history information was memorize | stored and the temperature transition condition was displayed, it was not limited to this, The sequencer 12 itself may be provided with a history information storage function and a temperature transition status display function, or a dedicated device having a history information storage function and a temperature transition status display function may be provided in place of the personal computer 15. May be.

(a)は 本発明の一実施形態を示す一部を断面とした正面図である。 (b)は(a)のコ字状箔の上にロウ棒を載せた状態を示す図である。(A) is the front view which made the cross section the part which shows one Embodiment of this invention. (B) is a figure which shows the state which mounted the wax bar on the U-shaped foil of (a). 図1の平面図である。It is a top view of FIG. 本発明に適用し得る高周波加熱インダクタを示す図であり、(a)は平面図、(b)は側面図、(c)は絶縁・耐熱セラミック平板の平面図、(d)は(a)でのA−A線端面図である。It is a figure which shows the high frequency heating inductor which can be applied to this invention, (a) is a top view, (b) is a side view, (c) is a top view of an insulating and heat-resistant ceramic flat plate, (d) is (a). It is an AA line end elevation view. 軸長側平角導体及び周長側平角導体へのコ字状ロウ箔の装着状態を示す説明図である。It is explanatory drawing which shows the mounting state of the U-shaped brazing foil to the axial long side rectangular conductor and the circumferential long side rectangular conductor. コ字状ロウ箔装着装置の構成を示す図であり、(a)はカートリッジの側面図、(b)はコ字状ロウ箔供給部を示す断面図、(c)はコ字状ロウ箔装着部を示す断面図である。It is a figure which shows the structure of a U-shaped wax foil mounting apparatus, (a) is a side view of a cartridge, (b) is sectional drawing which shows a U-shaped wax foil supply part, (c) is a U-shaped wax foil mounting. It is sectional drawing which shows a part. 本発明の実施例で、(a)は高周波加熱インダクタの電源制御系統を示すブロック図、(b)は所定ロウ付け時間で加熱が停止する温度制御波形、(c)は所定ロウ付け保持時間で加熱が停止する温度制御波形である。In the embodiment of the present invention, (a) is a block diagram showing a power supply control system of a high-frequency heating inductor, (b) is a temperature control waveform in which heating stops at a predetermined brazing time, and (c) is a predetermined brazing holding time. It is a temperature control waveform in which heating stops. ロータコイルのスパイラル形状を説明する図である。It is a figure explaining the spiral shape of a rotor coil. 従来のロウ付け継ぎ手を示す図である。It is a figure which shows the conventional brazing joint. 従来の高周波加熱インダクタで加熱するときの平角導体の突き合わせ状態を示す説明図である。It is explanatory drawing which shows the butt | matching state of a flat conductor when heating with the conventional high frequency heating inductor. 従来の高周波加熱の人手によるロウ付け状態を示す説明図である。It is explanatory drawing which shows the brazing state by the manual operation of the conventional high frequency heating.

符号の説明Explanation of symbols

1 ロウ付け装置
2 軸長側平角導体
3 周長側平角導体
4 高周波加熱インダクタ
43 基台
44 筐体
46 水冷銅パイプ
46c,46h 加熱部
47,48 積層コア
49 高周波加熱インダクタ
50 絶縁・耐熱石膏
5 絶縁・耐熱セラミック平板
6 コ字状ロウ箔
7 ロウ箔装着装置
7c,7d カートリッジ
7e 押し出し治具
7f コ字状ロウ箔供給部
7g ロウ箔装着
7h ロウ箔移動装着機構
7j,7k 保持部
7o 保持用重錘
7p 傾斜案内面
8 位置決め保持機構
9 上側押圧機構
10 赤外線放射温度計
11 高周波加熱電源回路
12 シーケンサ
13 高周波加熱温度設定器
14 警報回路
15 パーソナルコンピュータ
100 ロウ棒
101 ロウ棒配置装置
102 強制冷却ガスノズル
DESCRIPTION OF SYMBOLS 1 Brazing apparatus 2 Axis long side rectangular conductor 3 Circumferential length side rectangular conductor 4 High frequency heating inductor 43 Base 44 Case 46 Water-cooled copper pipe 46c, 46h Heating part 47, 48 Laminated core 49 High frequency heating inductor 50 Insulation, heat resistant gypsum 5 Insulating and heat-resistant ceramic flat plate 6 U-shaped brazing foil 7 Brazing foil mounting device 7c, 7d Cartridge 7e Extrusion jig 7f U-shaped brazing foil supply section 7g Brazing foil mounting 7h Brazing foil moving mounting mechanism 7j, 7k Holding section 7o For holding Weight 7p Inclined guide surface 8 Positioning and holding mechanism 9 Upper pressing mechanism 10 Infrared radiation thermometer 11 High-frequency heating power circuit 12 Sequencer 13 High-frequency heating temperature setting device 14 Alarm circuit 15 Personal computer 100 Row rod 101 Row rod arrangement device 102 Forced cooling gas nozzle

Claims (16)

電機機器の回転子に設けられたロータコイルの四隅をロウ付けするロータコイルのロウ付け装置において、
積層コアと水冷導電性パイプとで構成される高周波加熱インダクタ本体を当該積層コアを平坦面に臨ませて固定保持した高周波加熱インダクタと、該高周波加熱インダクタの平坦面上に配設された絶縁・耐熱用分離板と、前記ロータコイルを構成する軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置にロウ箔を装着するロウ箔装着装置と、前記ロウ箔装着装置でロウ箔を装着した軸長側平角導体及び周長側平角導体を互いのロウ箔で接合させ、その接合位置が前記絶縁・耐熱用分離板上となるように位置決め保持する位置決め保持機構と、前記軸長側平角導体及び周長側平角導体の突き合わせ位置近傍を上方から押圧する押圧機構と、前記軸長側平角導体及び周長側平角導体のロウ箔接合位置の温度を計測する温度計測手段と、該温度計測手段で計測した温度情報が入力される前記高周波加熱インダクタ本体に高周波電力を供給する高周波加熱電源制御手段とを備えたことを特徴とするロータコイルのロウ付け装置。
In a brazing device for a rotor coil that brazes four corners of a rotor coil provided in a rotor of an electric device,
A high-frequency heating inductor main body composed of a multilayer core and a water-cooled conductive pipe is fixedly held with the multilayer core facing the flat surface, and an insulation / disposition disposed on the flat surface of the high-frequency heating inductor. a heat-resistant separator plate, and the brazing foil mounting apparatus for mounting a wax foil brazing position that perpendicularly abutting one another in the axial side flat conductor and the circumferential length side rectangular conductor constituting the rotor coil, in the row foil mounting device A positioning and holding mechanism for joining the axial length side rectangular conductor and the circumferential length side rectangular conductor, to which the brazing foil is mounted, to each other with the brazing foil, and positioning and holding the joining position on the insulating / heat-resistant separating plate; A pressing mechanism that presses the vicinity of the abutting position of the axial long side rectangular conductor and the circumferential long side rectangular conductor from above, and a temperature that measures the temperature of the brazing foil joining position of the axial long side rectangular conductor and the circumferential long side rectangular conductor. Measuring means, brazing device of the rotor coil, characterized in that the temperature information measured by the temperature measuring means and a high-frequency heating power control means for supplying high frequency power to the high-frequency heating inductor body inputted.
電機機器の回転子に設けられたロータコイルの四隅をロウ付けするロータコイルのロウ付け装置において、
積層コアと水冷導電性パイプとで構成される高周波加熱インダクタ本体を当該積層コアを平坦面に臨ませて固定保持した高周波加熱インダクタと、該高周波加熱インダクタの平坦面上に配設された絶縁・耐熱用分離板と、前記ロータコイルを構成する軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置にロウ箔を装着するロウ箔装着装置と、前記ロウ箔装着装置でロウ箔を装着した軸長側平角導体及び周長側平角導体を互いのロウ箔で接合させ、その接合位置が前記絶縁・耐熱用分離板上となるように位置決め保持する位置決め保持機構と、該位置決め保持機構で位置決め保持された互いのロウ箔の接合位置にロウ棒を配置するロウ棒配置装置と、前記軸長側平角導体及び周長側平角導体の突き合わせ位置近傍を上方から押圧する押圧機構と、前記軸長側平角導体及び周長側平角導体のロウ箔接合位置の温度を計測する温度計測手段と、該温度計測手段で計測した温度情報が入力される前記高周波加熱インダクタ本体に高周波電力を供給する高周波加熱電源制御手段とを備えたことを特徴とするロータコイルのロウ付け装置。
In a brazing device for a rotor coil that brazes four corners of a rotor coil provided in a rotor of an electric device,
A high-frequency heating inductor main body composed of a multilayer core and a water-cooled conductive pipe is fixedly held with the multilayer core facing the flat surface, and an insulation / disposition disposed on the flat surface of the high-frequency heating inductor. a heat-resistant separator plate, and the brazing foil mounting apparatus for mounting a wax foil brazing position that perpendicularly abutting one another in the axial side flat conductor and the circumferential length side rectangular conductor constituting the rotor coil, in the row foil mounting device A positioning and holding mechanism that positions and holds the axial length side rectangular conductor and the circumferential length side rectangular conductor with the brazing foil attached to each other with the brazing foil, and the bonding position is on the insulating / heat-resistant separating plate; A brazing rod placement device that places brazing rods at the joining position of the brazing foils positioned and held by the positioning and holding mechanism, and a position where the axial length side rectangular conductor and the circumferential length side rectangular conductor are close to each other. A pressing mechanism that presses from the temperature, temperature measuring means for measuring the temperature of the brazing foil joining position of the axial length side rectangular conductor and the circumferential length side rectangular conductor, and the high frequency heating to which temperature information measured by the temperature measuring means is input A brazing device for a rotor coil, comprising: a high frequency heating power source control means for supplying high frequency power to an inductor body.
前記軸長側平角導体及び前記周長側平角導体の突合せ位置をロウ付けした後のロウ付け部を強制的に空冷する強制空冷手段を備えたことを特徴とする請求項1又は2の何れか1つに記載のロータコイルのロウ付け装置。   The forced air cooling means for forcibly cooling the brazed portion after brazing the butting positions of the axial length side rectangular conductor and the circumferential length side rectangular conductor is provided. The brazing apparatus for a rotor coil according to one. 前記強制空冷手段は、前記軸長側平角導体及び前記周長側平角導体のロウ付け位置でのロウ付け部において、ロウ付け終了直後に直ちにロウ付け部を強制空冷するガスノズル機構を備えていることを特徴とする請求項3に記載のロータコイルのロ付け装置。 The forced air cooling means includes a gas nozzle mechanism that forcibly air-cools the brazed portion immediately after the brazing is completed at the brazed portion of the axial length side rectangular conductor and the circumferential length side rectangular conductor at the brazed position. b c with apparatus of the rotor coil according to claim 3, characterized in. 前記高周波加熱インダクタは、前記高周波加熱インダクタ本体をその積層コアを上面に臨ませた状態で絶縁樹脂ガラス製の筐体内に配置した状態で、絶縁・耐熱石膏を流し込んで凝固させてから前記積層コアが臨む上面を平坦面に仕上げることにより構成されていることを特徴とする請求項1乃至4の何れか1つに記載のロータコイルのロウ付け装置。   The high-frequency heating inductor has the high-frequency heating inductor main body placed in an insulating resin glass casing with the laminated core facing the upper surface, and is poured and solidified by pouring insulation / heat-resistant plaster, and then the laminated core. The brazing device for a rotor coil according to any one of claims 1 to 4, characterized in that the upper surface facing the surface is finished to a flat surface. 前記絶縁・耐熱用分離板は、前記高周波加熱インダクタの平坦面に密着可能で且つ前記軸長側平角導体及び周長側平角導体のロウ付け位置に開口部を有するセラミック平板で構成されていることを特徴とする請求項1乃至5の何れか1つに記載のロータコイルのロウ付け装置。   The insulating / heat-resistant separating plate is formed of a ceramic flat plate that can be in close contact with the flat surface of the high-frequency heating inductor and that has an opening at the brazed position of the long axial rectangular conductor and the peripheral long rectangular conductor. The brazing device for a rotor coil according to any one of claims 1 to 5. 前記ロウ箔装着装置は、軸長側平角導体及び周長側平角導体の互いに直角に突き合わせロウ付け位置に個別に断面コ字状に形成されたコ字状ロウ箔を装着するように構成されていることを特徴とする請求項1乃至6の何れか1つに記載のロータコイルのロウ付け装置。 The row foil mounting device is configured to attach the U-shaped brazing foil formed separately U-shaped cross-section in the brazing position that perpendicularly abutting one another in the axial side flat conductor and the circumferential length side flat conductor 7. The brazing device for a rotor coil according to claim 1, wherein the brazing device is a rotor coil. 前記ロウ箔装着装置は、前記コ字状ロウ箔を多数段積み保持するカートリッジと、該カートリッジの最下段のコ字状ロウ箔を押し出す押し治具と、該押し治具で押し出されたコ字状ロウ箔を、受入位置で傾斜案内面を有する保持用重錘を押し上げながら当該コ字状ロウ箔の開放端面を外部に臨ませて装入保持すると共に、保持したコ字状ロウ箔を前記軸長側平角導体及び周長側平角導体のロウ付け位置に移動して当該軸長側平角導体及び周長側平角導体に装着するロウ箔移動装着機構とを備えていることを特徴とする請求項7記載のロータコイルのロウ付け装置。   The brazing foil mounting apparatus includes a cartridge that holds a large number of the U-shaped brazing foils, a pushing jig that pushes out the U-shaped brazing foil at the bottom of the cartridge, and a U-shape that is pushed out by the pushing jig. The U-shaped brazing foil is loaded and held with the open end face of the U-shaped brazing foil facing outside while pushing up the holding weight having the inclined guide surface at the receiving position, and the held U-shaped brazing foil is A brazing foil moving mounting mechanism for moving to a brazing position of the axial long side rectangular conductor and the circumferential long side rectangular conductor and mounting to the axial long side rectangular conductor and the circumferential long side rectangular conductor is provided. Item 8. A brazing device for a rotor coil according to Item 7. 前記高周波加熱電源制御手段は、温度計測手段で検出した温度情報がフィードバック情報として入力され、該フィードバック情報と目標温度情報との偏差に基づいて高周波加熱インダクタに供給する高周波電力を制御する高周波電力制御手段と、前記温度計測手段で計測した温度情報が設定された温度範囲内にあるか否かを判定し、温度範囲外であるときに警報を発する警報手段と、前記温度範囲の許容上限温度を所定時間超えて加熱温度が維持されたときに高周波電力の供給を停止させる高周波電力停止手段と、前記高周波電力制御手段の制御情報が入力される制御履歴格納手段とを備えていることを特徴とする請求項1乃至8の何れか1つに記載のロータコイルのロウ付け装置。   The high frequency heating power source control means receives the temperature information detected by the temperature measuring means as feedback information, and controls the high frequency power supplied to the high frequency heating inductor based on the deviation between the feedback information and the target temperature information. Determining whether the temperature information measured by the temperature measuring means is within a set temperature range, and issuing an alarm when the temperature information is outside the temperature range; and an allowable upper limit temperature of the temperature range. Characterized in that it comprises high-frequency power stopping means for stopping supply of high-frequency power when the heating temperature is maintained for a predetermined time and control history storage means for receiving control information of the high-frequency power control means. The brazing device for a rotor coil according to any one of claims 1 to 8. 前記高周波加熱電源制御手段と前記温度計測手段とによって、前記軸長側平角導体及び前記周長側平角導体のロウ付け位置をロウ付けする温度情報が設定された温度範囲の許容下限温度に到達した時点から所定ロウ付け保持時間までロウ付け温度を保持するようにしたことを特徴とする請求項1乃至9の何れか1つに記載のロータコイルのロウ付け装置。   The high frequency heating power source control means and the temperature measurement means have reached an allowable lower limit temperature of a temperature range in which temperature information for brazing the brazing positions of the axial length side rectangular conductor and the circumferential length side rectangular conductor is set. The brazing device for a rotor coil according to any one of claims 1 to 9, wherein the brazing temperature is maintained from a time point to a predetermined brazing holding time. 前記位置決め保持機構は、前記軸長側平角導体及び周長側平角導体を直角となるように互いにロウ付け位置を突き合わせて位置決めする当該ロウ付け位置から離れた位置に設けられた位置決め治具と、該位置決め治具で位置決めした前記軸長側平角導体及び周長側平角導体をその側面部及び上面部を同時に保持する固定チャック機構と、ロウ付け位置が側面部となる前記軸長側平角導体及び周長側平角導体の一方のロウ付け位置とは反対側の側面を熱膨張を許容可能に押圧する押圧機構とを備えていることを特徴とする請求項1乃至10の何れか1つに記載のロータコイルのロウ付け装置。 The positioning holding mechanism is a positioning jig provided at a position away from the brazing position for positioning the axial length side rectangular conductor and the circumferential length side rectangular conductor so as to make a right angle with each other so as to make a right angle. A fixed chuck mechanism for simultaneously holding the side surface portion and the top surface portion of the shaft length side rectangular conductor and the circumferential length side rectangular conductor positioned by the positioning jig, and the shaft length side rectangular conductor whose brazing position is the side surface portion; 11. The pressing mechanism according to claim 1, further comprising: a pressing mechanism that presses the side surface opposite to the brazing position of the circumferential long side rectangular conductor to allow thermal expansion. Rotor coil brazing device. 電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、
前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップとを備えたことを特徴とするロータコイルのロウ付け方法。
In a brazing method of a rotor coil that brazes a pair of axially long side rectangular conductors and a pair of circumferentially long side rectangular conductors that constitute a rotor coil provided in a rotor of an electric device,
A step of mounting a b c foil brazing position of the axial length side flat conductor and the circumferential length side rectangular conductor, the pre-km c axis length side flat conductor mounting the foil and the circumferential length side rectangular conductor, mutual b The foil is joined and positioned and held so that the joining position is on the insulating / heat-resistant separator disposed on the high-frequency heating inductor having the high-frequency heating inductor body having the laminated core and the water-cooled conductive pipe , A step of pressing the vicinity of the bonding position from above with a pressing mechanism, and a step of controlling and heating high-frequency power supplied to the high-frequency heating inductor body while detecting the temperature at the brazing position. A method for brazing a rotor coil.
電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、
前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、位置決め保持された互いのロウ箔の接合位置にロウ棒を載置するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップとを備えたことを特徴とするロータコイルのロウ付け方法。
In a brazing method of a rotor coil that brazes a pair of axially long side rectangular conductors and a pair of circumferentially long side rectangular conductors that constitute a rotor coil provided in a rotor of an electric device,
A step of mounting a b c foil brazing position of the axial length side flat conductor and the circumferential length side rectangular conductor, the pre-km c axis length side flat conductor mounting the foil and the circumferential length side rectangular conductor, mutual b The foil is joined and positioned and held so that the joining position is on the insulating / heat-resistant separator disposed on the high-frequency heating inductor having the high-frequency heating inductor body having the laminated core and the water-cooled conductive pipe , wherein the step of pressing the vicinity of the upward pressing mechanism of the bonding position, the steps of placing a brazing rod joining position of mutual b c foils positioned and held, while detecting the temperature at the braze location A method of brazing a rotor coil, comprising: heating by controlling high-frequency power supplied to a high-frequency heating inductor body.
電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、
前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップと、ロウ付け終了直後に直ちにロウ付け部を強制空冷するステップとを備えたことを特徴とするロータコイルのロウ付け方法。
In a brazing method of a rotor coil that brazes a pair of axially long side rectangular conductors and a pair of circumferentially long side rectangular conductors that constitute a rotor coil provided in a rotor of an electric device,
A step of mounting a b c foil brazing position of the axial length side flat conductor and the circumferential length side rectangular conductor, the pre-km c axis length side flat conductor mounting the foil and the circumferential length side rectangular conductor, mutual b The foil is joined and positioned and held so that the joining position is on the insulating / heat-resistant separator disposed on the high-frequency heating inductor having the high-frequency heating inductor body having the laminated core and the water-cooled conductive pipe , A step of pressing the vicinity of the joining position from above with a pressing mechanism, a step of heating by controlling the high-frequency power supplied to the high-frequency heating inductor body while detecting the temperature at the brazing position, and immediately after the end of brazing And immediately forcibly air-cooling the brazing portion.
電機機器の回転子に設けられたロータコイルを構成する一対の軸長側平角導体及び一対の周長側平角導体をロウ付けするロータコイルのロウ付け方法において、
前記軸長側平角導体及び周長側平角導体のロウ付け位置にロウ箔を装着するステップと、前記ロウ箔を装着した軸長側平角導体及び周長側平角導体を、互いのロウ箔が接合し、その接合位置が積層コアと水冷導電性パイプとを有する高周波加熱インダクタ本体を有する高周波加熱インダクタ上に配設した絶縁・耐熱用分離板上となるように位置決め保持すると共に、当該接合位置の近傍を上方から押圧機構で押圧するステップと、位置決め保持された互いのロウ箔の接合位置にロウ棒を載置するステップと、前記ロウ付け位置での温度を検出しながら前記高周波加熱インダクタ本体に供給する高周波電力を制御して加熱するステップと、ロウ付け終了直後に直ちにロウ付け部を強制空冷するステップとを備えたことを特徴とするロータコイルのロウ付け方法。
In a brazing method of a rotor coil that brazes a pair of axially long side rectangular conductors and a pair of circumferentially long side rectangular conductors that constitute a rotor coil provided in a rotor of an electric device,
A step of mounting a b c foil brazing position of the axial length side flat conductor and the circumferential length side rectangular conductor, the pre-km c axis length side flat conductor mounting the foil and the circumferential length side rectangular conductor, mutual b The foil is joined and positioned and held so that the joining position is on the insulating / heat-resistant separator disposed on the high-frequency heating inductor having the high-frequency heating inductor body having the laminated core and the water-cooled conductive pipe , wherein the step of pressing the vicinity of the upward pressing mechanism of the bonding position, the steps of placing a brazing rod joining position of mutual b c foils positioned and held, while detecting the temperature at the braze location A rotor coil comprising: a step of heating by controlling high-frequency power supplied to a high-frequency heating inductor body; and a step of forcibly air-cooling the brazed portion immediately after the end of brazing. Brazing method.
前記軸長側平角導体及び周長側平角導体のロウ付け位置に装着される前記ロウ箔は、断面コ字状に形成されたコ字状ロウ箔であることを特徴とする請求項12乃至15の何れか1項の何れか1つに記載のロータコイルのロウ付け方法。16. The brazing foil attached to the brazing position of the long shaft rectangular conductor and the long rectangular conductor is a U-shaped brazing foil having a U-shaped cross section. The method for brazing a rotor coil according to any one of the above.
JP2003428012A 2002-12-26 2003-12-24 Brazing apparatus and brazing method for rotor coil Expired - Lifetime JP4407276B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003428012A JP4407276B2 (en) 2002-12-26 2003-12-24 Brazing apparatus and brazing method for rotor coil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002377763 2002-12-26
JP2003428012A JP4407276B2 (en) 2002-12-26 2003-12-24 Brazing apparatus and brazing method for rotor coil

Publications (2)

Publication Number Publication Date
JP2004222493A JP2004222493A (en) 2004-08-05
JP4407276B2 true JP4407276B2 (en) 2010-02-03

Family

ID=32911171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003428012A Expired - Lifetime JP4407276B2 (en) 2002-12-26 2003-12-24 Brazing apparatus and brazing method for rotor coil

Country Status (1)

Country Link
JP (1) JP4407276B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053355B1 (en) * 2010-03-04 2011-08-01 두산중공업 주식회사 The rotor coil brazing jig for the air cooling generator
FR2963261B1 (en) * 2010-07-29 2012-09-07 Turbomeca INDUCTION BRAZING METHOD FOR COMPLEX SHAPE PIECES, AND SINGLE AND MULTIPLE SHIELDING BODY FOR IMPLEMENTATION
JP5901013B2 (en) * 2012-02-23 2016-04-06 株式会社ミヤデン Non-oxidation induction heat treatment equipment
JP6092862B2 (en) * 2012-06-15 2017-03-08 武延 本郷 Coiled member and coil device
JP2017079556A (en) * 2015-10-21 2017-04-27 株式会社東芝 Rotary electric machine connection conductor, assembly method of rotary electric machine connection conductor, and rotary electric machine
CN106238845B (en) * 2016-08-18 2018-04-20 哈尔滨电气动力装备有限公司 Core main pump motor stator coil end socket resistance brazing technology and its equipment
CN113828886B (en) * 2021-09-07 2022-09-27 东方电气集团东方电机有限公司 Automatic brazing equipment for rotor coil of large steam turbine generator and using method thereof

Also Published As

Publication number Publication date
JP2004222493A (en) 2004-08-05

Similar Documents

Publication Publication Date Title
US8701966B2 (en) Induction bonding
US7253380B2 (en) Induction heating of rail welds
CA1264360A (en) Self-heating, self-soldering bus bar
CN100561806C (en) A kind of cable and pin tube cavity contact even summation cable joint brazing device and method
JP4407276B2 (en) Brazing apparatus and brazing method for rotor coil
TW200927344A (en) Apparatus for heating the welded portion of steel pipe material, and method for the apparatus
JP4773197B2 (en) Reflow soldering method and apparatus
CN106238848B (en) Non-contact type heating tin brazing method for metal structural part and PCB
JP5334250B2 (en) Reflow soldering method and apparatus
CN105946238B (en) FDM3D printer consumable connection device and use method thereof
US20150041200A1 (en) Soldering method and corresponding soldering device
CN104625299A (en) Tin soldering jig and laser tin soldering method
JP6259341B2 (en) Joining device
CN112338305A (en) Welding process for surface vertical tension test
KR20170107714A (en) A welder for welding a themoplasticity material filament
US20200223003A1 (en) Closed socket brazed joint assembly
JP2012186398A (en) Joining device
KR101272178B1 (en) Secondary battery and method for manufacturing the same
JP2006344871A (en) Method and apparatus of reflow soldering
JP3294792B2 (en) Rotor brazing device
CN209503178U (en) High-frequency induction brazing device
JPH0327872A (en) Method and apparatus for joining with solder
JP2005059025A (en) Terminal press-fixing device and terminal press-fixing method
KR20080107697A (en) Copper shoe for electro gas welding
CN218224998U (en) Soldering tin device for thermocouple assembling machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060315

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090206

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090210

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090408

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091020

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091102

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4407276

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121120

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131120

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term