JP2020088237A - Manufacture method of transformer circuit board and transformer of the same - Google Patents

Manufacture method of transformer circuit board and transformer of the same Download PDF

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JP2020088237A
JP2020088237A JP2018222454A JP2018222454A JP2020088237A JP 2020088237 A JP2020088237 A JP 2020088237A JP 2018222454 A JP2018222454 A JP 2018222454A JP 2018222454 A JP2018222454 A JP 2018222454A JP 2020088237 A JP2020088237 A JP 2020088237A
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▲い▼傑 汪
Yijie Wang
▲い▼傑 汪
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Abstract

To provide a manufacture method of a transformer circuit board.SOLUTION: A plurality of metal circuit boards is formed by press-processing by a metal mold. Each metal circuit board includes: a press-processing step S1 in which a shaft hole is coaxially provided; a first time stacking step S2 of overlapping the metal circuit boards between two outer insulation layers; a first time compression step S3 of fixing the metal circuit boards between the two outer insulation layers by coupling each outer insulation layer and each back insulation layer, by a thermal pressure system, which are adjacent each other; a second stacking step S4 of stacking each metal circuit board again in accordance with a position of the shaft hole of each metal circuit board inside to an outside of each outer insulation layer; and a second compression step S5 of forming a weld prevention green coating layer in each outer insulation layer by coupling tightly the metal circuit boards positioned on the two outer insulation layers by the thermal pressure system to form a transformer circuit board by cutting them.SELECTED DRAWING: Figure 1

Description

本発明は、変圧器回路板の作製方法とその変圧器に関するものである。 The present invention relates to a method of manufacturing a transformer circuit board and a transformer thereof.

変圧器の作製プロセスでは、要求される、パワー、電圧、電流、インダクタンス、漏れインダクタンス、磁気飽和および効率などの要求特性、及び回路レイアウトによって、銅線の直径、回路の巻き数および複数の互いに異なる巻き線が設計されることが一般的である。 In the manufacturing process of the transformer, the diameter of the copper wire, the number of turns of the circuit, and a plurality of turns are different from each other depending on the required characteristics such as power, voltage, current, inductance, leakage inductance, magnetic saturation and efficiency, and the circuit layout. It is common for windings to be designed.

従来の変圧器回路板の回路の作製プロセスでは、写真技術によって回路が作製される。このような作製プロセスでは、銅箔に対して、露光、現像、エッチング、穴開け及びメッキが行われ、各層に必要な回路が作製され、圧着技術により各層間の回路が圧着されて一つのプリント回路板になって、磁気コアに組付けられる。
回路を作製する過程中には、化学薬液により銅箔の表面がエッチングされる。
In the process of making a circuit of a conventional transformer circuit board, the circuit is made by photographic technology. In such a manufacturing process, the copper foil is exposed, developed, etched, punched, and plated to form the circuits required for each layer, and the circuits between each layer are pressure bonded by a pressure bonding technique to form a single print. It becomes a circuit board and is attached to the magnetic core.
During the process of making a circuit, the surface of the copper foil is etched by a chemical solution.

しかし、エッチング時には、サイドエッチング効果が発生しやすい。すなわち、回路の上層を腐蝕する時間がより長くて、底部を腐蝕する時間がより短いため、回路は、上に狭くて下に広いという状況を生じやすい。このサイドエッチング効果により、銅箔の回路は線径が異常となって、変圧器の特性が悪化する。
具体的には、銅箔の表面に発生するサイドエッチング効果により、圧着工程において、樹脂の流量が均一になりにくくて、各層の銅箔に、欠陥を生じやすい。
更に、気泡が発生し、又は貼付けが不良となって、層間が分離して不良品となることがある。これにより、当業者は作製プロセスを安定化することができない。
銅箔の回路の作製プロセスは、複雑であり、また多種の化学薬剤を利用することが必要なため、作業環境の危険性が増大する。
また、化学薬剤によるエッチングでは、回路の作製を効果的にコントロールすることができず、更に、銅箔にサイドエッチング効果が発生して、変圧器回路板の作製効率および良品率が低下する。
なお、従来技術における回路の作製プロセスは、例えば特許文献1に記載されている。
However, a side etching effect is likely to occur during etching. That is, the circuit is likely to be narrowed up and wide down because the time to erode the top layer of the circuit is longer and the time to erode the bottom is shorter. Due to this side etching effect, the wire diameter of the circuit of the copper foil becomes abnormal and the characteristics of the transformer are deteriorated.
Specifically, due to the side etching effect generated on the surface of the copper foil, the flow rate of the resin is less likely to be uniform in the pressure bonding step, and defects are likely to occur in the copper foil of each layer.
Furthermore, air bubbles may be generated, or the attachment may be defective, and the layers may be separated, resulting in a defective product. This prevents the person skilled in the art from stabilizing the production process.
The process of making copper foil circuits is complicated and requires the use of a wide variety of chemical agents, increasing the danger of the working environment.
In addition, etching with a chemical agent cannot effectively control the production of a circuit, and further, a side etching effect occurs on the copper foil, which lowers the production efficiency and the non-defective rate of the transformer circuit board.
Note that the circuit fabrication process in the prior art is described in Patent Document 1, for example.

特開2018−11013号公報JP, 2018-11013, A

本発明の主な目的は、銅箔上の回路をプレス加工によって成形し、化学薬剤による露光、現像、及びエッチングなどのステップを行わないことにより、銅箔にサイドエッチング効果を発生させずに、変圧器回路板の作製プロセスの良品率を増加させることが可能な変圧器回路板の作製方法を提供することにある。 The main object of the present invention is to form a circuit on a copper foil by press working, and by not performing steps such as exposure with a chemical agent, development, and etching, without causing a side etching effect on the copper foil, It is an object of the present invention to provide a method for manufacturing a transformer circuit board, which can increase the yield rate of the transformer circuit board manufacturing process.

本発明の変圧器回路板の作製方法は、プレス加工ステップと、一回目の積上げステップと、一回目の圧着ステップと、二回目の積上げステップと、二回目の圧着ステップと、を含むことを特徴とする。
プレス加工ステップでは、複数の金属回路板は、それぞれ金型によってプレス加工されて形成され、各金属回路板には、軸穴が同軸に設けられ、各金属回路板の形状は同じ又は異なる。
一回目の積上げステップでは、二つの外絶縁層の間に、これらの金属回路板が重ねられ、各軸穴により位置合わせされ、隣接する二つの金属回路板の間に裏絶縁層がそれぞれ設けられ、これにより、複数層が交錯して重なりあい金属回路板と裏絶縁層とが形成される。
一回目の圧着ステップでは、熱圧方式により、互いに隣接する、各外絶縁層と各裏絶縁層とが溶融されて結合されて、二つの外絶縁層の間に、これらの金属回路板が固定される。
二回目の積上げステップでは、一回目の圧着ステップの後、各外絶縁層の外側に、内側に位置する各金属回路板の軸穴に位置合わせされ、再度金属回路板が積上げられる。
二回目の圧着ステップでは、同じように熱圧方式により、二つの外絶縁層上に位置するこれらの金属回路板が緊密に結合されて、熱圧処理の後、スクリーン印刷を施されることにより、各外絶縁層に溶接防止グリーン塗装層が形成され、最後に切断されて変圧器回路板が形成される。
The method for producing a transformer circuit board according to the present invention includes a press working step, a first stacking step, a first crimping step, a second stacking step, and a second crimping step. And
In the pressing step, the plurality of metal circuit boards are formed by pressing with a mold, and each metal circuit board is provided with a shaft hole coaxially, and the shape of each metal circuit board is the same or different.
In the first stacking step, these metal circuit boards are stacked between two outer insulating layers, aligned by each axial hole, and a back insulating layer is provided between each two adjacent metal circuit boards. As a result, the plurality of layers intersect and overlap with each other to form the metal circuit board and the back insulating layer.
In the first crimping step, each outer insulating layer and each back insulating layer, which are adjacent to each other, are melted and bonded by the hot pressing method, and these metal circuit boards are fixed between the two outer insulating layers. To be done.
In the second stacking step, after the first crimping step, the outer side of each outer insulating layer is aligned with the axial hole of each metal circuit board located inside, and the metal circuit boards are stacked again.
In the second crimping step, these metal circuit boards located on the two outer insulating layers are also tightly joined by the hot pressing method, and after the hot pressing treatment, screen printing is performed. , A welding prevention green paint layer is formed on each outer insulating layer, and finally cut to form a transformer circuit board.

本発明の変圧器回路板の作製方法によると、
一回目の積上げステップと二回目の積上げステップとにおいて、各層のこれらの金属回路板は、互いに位置合わせされて積上げられて、X線により、各層の金属回路板の相対位置および回路がずれるかどうかが検査されて補正されることを特徴とする。
According to the method for manufacturing a transformer circuit board of the present invention,
In the first stacking step and the second stacking step, these metal circuit boards of each layer are stacked by being aligned with each other, and whether the relative position and circuit of the metal circuit boards of each layer are displaced by X-rays. Is inspected and corrected.

本発明の変圧器回路板の作製方法によると、
二回目の積上げステップにおいて、
これらの金属回路板は、第1の金属回路板と、第2の金属回路板と、第3の金属回路板と、第4の金属回路板と、を含み、
第1の金属回路板と第4の金属回路板とは、それぞれ二つの外絶縁層の外側に位置し、
第2の金属回路板と第3の金属回路板とは、二つの外絶縁層の内側に設けられており、
二つの外絶縁層の間で順次に重なり、
裏絶縁層は、第2の金属回路板と第3の金属回路板との間に設けられており、
金属回路板と外絶縁層および裏絶縁層は交錯して重なっており、
第1の金属回路板と第4の金属回路板との重なり構造は互いに逆であり、
第2の金属回路板と第3の金属回路板との重なり構造は互いに逆である。
According to the method for manufacturing a transformer circuit board of the present invention,
In the second stacking step,
These metal circuit boards include a first metal circuit board, a second metal circuit board, a third metal circuit board, and a fourth metal circuit board,
The first metal circuit board and the fourth metal circuit board are respectively located outside the two outer insulating layers,
The second metal circuit board and the third metal circuit board are provided inside the two outer insulating layers,
Sequentially overlapping between the two outer insulation layers,
The back insulating layer is provided between the second metal circuit board and the third metal circuit board,
The metal circuit board, the outer insulation layer and the back insulation layer intersect and overlap,
The overlapping structures of the first metal circuit board and the fourth metal circuit board are opposite to each other,
The overlapping structures of the second metal circuit board and the third metal circuit board are opposite to each other.

本発明の変圧器回路板の作製方法によると、
二回目の圧着ステップの後に、更に穴開けステップを含む。
穴開けステップは、各金属回路板の回路構造に配線が通過する導通穴が開けられて、各外絶縁層に溶接防止グリーン塗装層が印刷され、各導通穴に接合ピンが半田付けされ、これにより、各金属回路板が接合されて固定される。
According to the method for manufacturing a transformer circuit board of the present invention,
After the second crimping step, an additional punching step is included.
In the drilling step, a conductive hole through which wiring passes is drilled in the circuit structure of each metal circuit board, a welding prevention green paint layer is printed on each outer insulating layer, and a joining pin is soldered to each conductive hole. Thus, the metal circuit boards are joined and fixed.

また、各接合ピンは、上から下へ拡径する形状を呈し、各接合ピンの表面には、半田の各導通穴への流れ込みを容易にする導流溝が設けられており、導流溝は螺旋状を呈する。 In addition, each joining pin has a shape in which the diameter increases from top to bottom, and the surface of each joining pin is provided with a flow guide groove that facilitates the flow of solder into each conduction hole. Has a spiral shape.

本発明の変圧器回路板の作製方法によると、
複数層が交錯して重なりあい、金属回路板、外絶縁層級、及び裏絶縁層において、各層の金属回路板は、水平方向に沿って等距離に複数枚敷かれており、隣り合う層にあるこれらの金属回路板は、互いに位置合わせされて積上げられることにより、一回で複数の変圧器回路板が作製される。
According to the method for manufacturing a transformer circuit board of the present invention,
In the metal circuit board, the outer insulation layer grade, and the back insulation layer, the metal circuit boards of the respective layers are laid out at equal distances along the horizontal direction, and are in adjacent layers. These metal circuit boards are aligned and stacked with each other to produce a plurality of transformer circuit boards at one time.

本発明の変圧器回路板の作製方法とその変圧器によれば、次のような効果がある。
(1)本発明に係る金属回路板10は、金型によってスタンピングすることにより成形される。従来のように、化学薬剤により、露光、現像、及びエッチングなどのステップが行われないため、銅箔にサイドエッチング効果が発生することがない。また、本発明により、変圧器回路板100の良品率を増加させることが可能であり、各金属回路板10での回路の一致性がもっと高くなり、全体の生産効率が向上する。
The method for producing a transformer circuit board and the transformer thereof according to the present invention have the following effects.
(1) The metal circuit board 10 according to the present invention is formed by stamping with a mold. Unlike conventional methods, the chemical agent does not perform steps such as exposure, development, and etching, so that the copper foil does not have a side etching effect. Further, according to the present invention, it is possible to increase the non-defective rate of the transformer circuit board 100, the degree of conformity of the circuit on each metal circuit board 10 is further increased, and the overall production efficiency is improved.

(2)積上げる過程中に、補正および位置合わせが精密に行われることにより、各層の金属回路板10が互いに位置合わせされる。これにより、金属回路板10の位置ずれを防止することが可能であり、従来の方法で金属回路板10の回路が作製されるときに発生するサイドエッチング効果を効果的に無くすことが可能である。また、変圧器回路板100と磁気コアとから構成される変圧器は、漏れインダクタンスが低く、電磁シールドの効果が良い。 (2) During the stacking process, the metal circuit boards 10 of the respective layers are aligned with each other by precisely performing the correction and the alignment. As a result, it is possible to prevent the displacement of the metal circuit board 10, and it is possible to effectively eliminate the side etching effect that occurs when the circuit of the metal circuit board 10 is manufactured by the conventional method. .. Further, the transformer including the transformer circuit board 100 and the magnetic core has a low leakage inductance and an excellent electromagnetic shield effect.

本発明に係る変圧器回路板の作製方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of the transformer circuit board which concerns on this invention. 本発明に係る単一の変圧器回路板を示す上面図である。It is a top view which shows the single transformer circuit board which concerns on this invention. 本発明に係る各層の金属回路板の構成を示す上面図である。It is a top view which shows the structure of the metal circuit board of each layer which concerns on this invention. 本発明に係る一回目の積上げステップを実施する動作を示す断面図である。裏絶縁層の両側に第2の金属回路板および第3の金属回路板が重なることを示す。It is sectional drawing which shows operation|movement which implements the 1st stacking step which concerns on this invention. It shows that the second metal circuit board and the third metal circuit board overlap on both sides of the back insulating layer. 本発明に係る一回目の積上げステップを実施する動作を示す断面図である。第2の金属回路板と第3の金属回路板とに二つの外絶縁層がそれぞれ敷かれることを示す。It is sectional drawing which shows operation|movement which implements the 1st stacking step which concerns on this invention. It is shown that two outer insulating layers are respectively laid on the second metal circuit board and the third metal circuit board. 本発明に係る一回目の圧着ステップを実施する動作を示す断面図である。It is sectional drawing which shows operation|movement which implements the 1st crimping step which concerns on this invention. 本発明に係る一回目の圧着ステップを実施した後の状態を示す断面図である。It is sectional drawing which shows the state after implementing the 1st pressure bonding step which concerns on this invention. 本発明に係る二回目の積上げステップを実施する動作を示す断面図であって、外絶縁層に第1の金属回路板および第4の金属回路板をそれぞれ重なることを示す。It is sectional drawing which shows operation|movement which implements the 2nd stacking step which concerns on this invention, Comprising: It overlaps with a 1st metal circuit board and a 4th metal circuit board, respectively on an outer insulating layer. 本発明に係る二回目の圧着ステップを実施する動作を示す断面図である。It is sectional drawing which shows operation|movement which implements the 2nd crimping step which concerns on this invention. 本発明に係る穴開けステップを実施する動作を示す断面図である。It is sectional drawing which shows operation|movement which implements the drilling step which concerns on this invention.

以下、本発明の実施の形態を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

図1から図10を参照する。本発明に係る変圧器回路板の作製方法は、
プレス加工ステップS1と、
一回目の積上げステップS2と、
一回目の圧着ステップS3と、
二回目の積上げステップS4と、
二回目の圧着S5ステップと、
穴開けステップS6と、を含む。
Please refer to FIG. 1 to FIG. The manufacturing method of the transformer circuit board according to the present invention,
Press working step S1,
The first stacking step S2,
The first crimping step S3,
The second stacking step S4,
Second crimping S5 step,
And a drilling step S6.

プレス加工ステップS1は、図1から図3に示すように、プレス加工によって複数の金属回路板10をそれぞれ形成する。各金属回路板10の形状は、同じでもいいし、異なってもよい。
本実施形態では、各金属回路板10は自己粘着性を有する銅箔である。各金属回路板10をスタンピングする金型は、CNC旋盤またはレーザー彫刻機によって作製される。各金属回路板10の中心には、軸穴101が同軸に設けられている。異なる金属回路板10は、その内部の回路が積上げの順序によって異なる。
In the press working step S1, as shown in FIGS. 1 to 3, a plurality of metal circuit boards 10 are respectively formed by press working. The shape of each metal circuit board 10 may be the same or different.
In this embodiment, each metal circuit board 10 is a copper foil having self-adhesiveness. A die for stamping each metal circuit board 10 is manufactured by a CNC lathe or a laser engraving machine. A shaft hole 101 is coaxially provided at the center of each metal circuit board 10. The different metal circuit boards 10 have different circuits depending on the stacking order.

一回目の積上げステップS2は、図1から図5に示すように、各層の金属回路板10が、複数個が水平方向に沿って等距離に敷かれ、何れかの隣り合う層の金属回路板10が互いに位置合わせされて積上げられる。これにより、一回で複数の変圧器回路板100を作製することが可能である。このように、全体の作製効率を大幅に増加することが可能である。
しかし、本実施の形態では、単一の変圧器回路板100を作製する態様について説明する。
変圧器回路板100の一回目の積上げステップS2は、まず、二つの外絶縁層20の間に複数の金属回路板10が縦方向に沿って重ねられ、各金属回路板10に設けられている各軸穴101によって互いに位置合わせされる。何れかの隣り合う金属回路板10の間には、裏絶縁層21がそれぞれ設けられている。これにより、複数層が交錯して重なり合う金属回路板10及び裏絶縁層21を形成することが可能である。
本実施形態では、二つの外絶縁層20の間には、二層の金属回路板10が積上げられている。また、二つの金属回路板10の間には、単一の裏絶縁層21が設けられている。しかし、本発明は、これらに限定されない。
もちろん、二つの外絶縁層20の間には、必要に応じて、二層以上の金属回路板10が積上げられてもよい。
外絶縁層20と裏絶縁層21とは、面積および厚さが一致するガラス繊維樹脂シートであってもよい。
In the first stacking step S2, as shown in FIGS. 1 to 5, a plurality of metal circuit boards 10 of each layer are laid at equal distances in the horizontal direction, and the metal circuit boards of any adjacent layers are stacked. 10 are aligned with each other and stacked. This makes it possible to manufacture a plurality of transformer circuit boards 100 at one time. In this way, it is possible to significantly increase the overall production efficiency.
However, in the present embodiment, a mode in which a single transformer circuit board 100 is manufactured will be described.
In the first stacking step S2 of the transformer circuit board 100, first, the plurality of metal circuit boards 10 are vertically stacked between the two outer insulating layers 20 and provided on each metal circuit board 10. The shaft holes 101 align with each other. A back insulating layer 21 is provided between any adjacent metal circuit boards 10. Thereby, it is possible to form the metal circuit board 10 and the back insulating layer 21 in which a plurality of layers intersect and overlap.
In the present embodiment, two layers of metal circuit boards 10 are stacked between the two outer insulating layers 20. A single back insulating layer 21 is provided between the two metal circuit boards 10. However, the present invention is not limited to these.
Of course, two or more layers of the metal circuit boards 10 may be stacked between the two outer insulating layers 20 if necessary.
The outer insulating layer 20 and the back insulating layer 21 may be glass fiber resin sheets having the same area and thickness.

特に、各層間の金属回路板10の上下の位置合わせが極めて重要であり、ずれていると回路間を導通することができないため、各層の自己粘着性を持つ金属回路板10は、人手または自動化設備により積上げられる。
人手による積上げの場合は、作業者は、敷こうとする相対位置を、製造ラインの回路映像と1:1で対応する裏絶縁層21の両側面に赤外線を投影して位置決めして、人手で位置合わせすることにより、各裏絶縁層21の指定位置に自己粘着性を持つ各金属回路板10を貼り付けて、最後に、各金属回路板10に外絶縁層20をそれぞれ敷くことにより、二つの外絶縁層20の間に、各金属回路板10を順に重ねる。
自動化設備による積上げの場合は、自動化設備に設けられているロボットにより、自己粘着性を持つ各金属回路板10をクランプして、各裏絶縁層21の設定された相対位置に貼り付けることにより、二つの金属回路板10が精確に位置合わせされるように重ねられる。最後に、ロボットが、各金属回路板10に外絶縁層20を敷く。
In particular, the vertical alignment of the metal circuit boards 10 between the layers is extremely important, and if they are misaligned, it is not possible to conduct electrical continuity between the circuits. Stacked by equipment.
In the case of manual stacking, the operator projects infrared rays on both side surfaces of the back insulating layer 21 corresponding to the circuit image of the manufacturing line in a 1:1 relationship with the relative position to be laid, and manually positions them. By aligning, the metal circuit boards 10 having self-adhesiveness are attached to the designated positions of the back insulating layers 21, and finally, the outer insulating layers 20 are laid on the metal circuit boards 10, respectively. The metal circuit boards 10 are sequentially stacked between the two outer insulating layers 20.
In the case of stacking by automated equipment, each metal circuit board 10 having self-adhesiveness is clamped by a robot provided in the automated equipment and pasted at the set relative position of each back insulating layer 21, The two metal circuit boards 10 are stacked so as to be accurately aligned. Finally, the robot lays the outer insulating layer 20 on each metal circuit board 10.

次に、一回目の圧着(図では「圧合」)ステップS3は、図1及び図6に示すように、熱圧機40による熱圧により、二つの外絶縁層20の間に重なった金属回路板10と、それらに隣接する、外絶縁層20と、裏絶縁層21とを溶融して結合する。これにより、金属回路板10が二つの外絶縁層20の間に固定され、溶融して結合された外絶縁層20及び裏絶縁層21の分布が均一であることを確保することが可能である。 Next, as shown in FIG. 1 and FIG. 6, the first pressure bonding (“pressing” in the figure) step S3 is performed by the heat and pressure applied by the heat press 40 to overlap the two outer insulating layers 20 with each other. The plate 10, the outer insulating layer 20 and the back insulating layer 21, which are adjacent to the plate 10, are melted and bonded. As a result, the metal circuit board 10 is fixed between the two outer insulating layers 20, and it is possible to ensure that the outer insulating layer 20 and the back insulating layer 21 that are melted and bonded are evenly distributed. ..

二回目の積上げステップS4は、図1、図7及び図8に示すように、一回目の圧着ステップS3の後、上記の人手による方式または自動化設備方式により、二つの外絶縁層20の外側面に、内側にある各金属回路板10の軸穴101に位置合わせして、もう一つの金属回路板10を重ね、また絶縁層を敷かないことにより、金属回路板10が4層に積上がった構造を形成する。
本実施の形態では、積上げた後、X線により、各層間の金属回路板10の積上げ位置および回路がずれたかどうかを検査して補正する。これにより、各層間の金属回路板10の重なり位置の精確度を増加することが可能である。
The second stacking step S4 is, as shown in FIGS. 1, 7 and 8, after the first crimping step S3, the outer surface of the two outer insulating layers 20 is formed by the manual method or the automated equipment method. In addition, by aligning with the shaft hole 101 of each metal circuit board 10 on the inside, stacking another metal circuit board 10, and by not laying an insulating layer, the metal circuit board 10 was stacked in four layers. Form a structure.
In the present embodiment, after stacking, the stacking position of the metal circuit boards 10 between the respective layers and whether or not the circuits are displaced are inspected and corrected by X-rays. This makes it possible to increase the accuracy of the overlapping position of the metal circuit boards 10 between the layers.

また、本発明に係る金属回路板10は、第1の金属回路板11と、第2の金属回路板12と、第3の金属回路板13と、第4の金属回路板14と、を含む。
第1の金属回路板11と第4の金属回路板14とは、それぞれ二つの外絶縁層20の外側に位置する。第2の金属回路板12と第3の金属回路板13とは、二つの外絶縁層20の内側に順次に設けられており、裏絶縁層21の両側面に位置する。これにより、裏絶縁層21は第2の金属回路板12と第3の金属回路板13との間に位置する。
第1の金属回路板11の回路レイアウトは、第4の金属回路板14の回路レイアウトと同じである。第2の金属回路板12の回路レイアウトは、第3の金属回路板13の回路レイアウトと同じである。しかし、第1の金属回路板11の回路レイアウトは、第2の金属回路板12の回路レイアウトと異なる。
図2、図3及び図8に示すように、金属回路板10が各外絶縁層20及び各裏絶縁層21に交錯に重ねられると、第1の金属回路板11と第4の金属回路板14とは、水平方向において、ミラー対称的である。第2の金属回路板12と第3の金属回路板13とは、水平方向において、ミラー対称的であるため、縦方向に沿って重ねられると、第1の金属回路板11と第4の金属回路板14との構造は、互いに逆に設置され、第2の金属回路板12と第3の金属回路板13との構造は、互いに逆に設置される。
The metal circuit board 10 according to the present invention includes a first metal circuit board 11, a second metal circuit board 12, a third metal circuit board 13, and a fourth metal circuit board 14. ..
The first metal circuit board 11 and the fourth metal circuit board 14 are located outside the two outer insulating layers 20, respectively. The second metal circuit board 12 and the third metal circuit board 13 are sequentially provided inside the two outer insulating layers 20, and are located on both side surfaces of the back insulating layer 21. As a result, the back insulating layer 21 is located between the second metal circuit board 12 and the third metal circuit board 13.
The circuit layout of the first metal circuit board 11 is the same as the circuit layout of the fourth metal circuit board 14. The circuit layout of the second metal circuit board 12 is the same as the circuit layout of the third metal circuit board 13. However, the circuit layout of the first metal circuit board 11 is different from the circuit layout of the second metal circuit board 12.
As shown in FIGS. 2, 3 and 8, when the metal circuit board 10 is overlapped on the outer insulating layers 20 and the back insulating layers 21, the first metal circuit board 11 and the fourth metal circuit board 14 is mirror-symmetrical in the horizontal direction. Since the second metal circuit board 12 and the third metal circuit board 13 are mirror-symmetrical in the horizontal direction, when stacked in the vertical direction, the first metal circuit board 11 and the fourth metal circuit board 13 are stacked. The structure with the circuit board 14 is installed reversely to each other, and the structure with the second metal circuit board 12 and the third metal circuit board 13 is installed reversely to each other.

同じように、二回目の圧着(図では「圧合」)ステップS5は、図1及び図9に示すように、熱圧機40による熱圧により、第1の金属回路板11と第4の金属回路板14とは、それぞれ二つの外絶縁層20に緊密に粘着する。 Similarly, in the second pressure bonding (“pressing” in the figure) step S5, as shown in FIGS. 1 and 9, the first metal circuit board 11 and the fourth metal circuit board 11 are pressed by the heat and pressure by the heat press 40. The circuit board 14 and the two outer insulating layers 20 are closely adhered to each other.

必要に応じて、配線を通過させるために、層間に複数の導通穴を穴開ける穴開けステップS6は、図10に示すように、自動穴開け機により、各金属回路板10の回路構造に対して導通穴を穴開けて、水平メッキ設備により、各層の金属回路板10の導通穴に対してメッキをした後、各外絶縁層20の外側面に溶接防止インクを塗布してスクリーン印刷を行う。これにより、各外絶縁層20に溶接防止グリーン塗装層30が形成され、露呈する外絶縁層20の外側にある金属回路板10を保護することが可能である。また、スクラッチによる短絡および断線を回避することが可能であり、溶接防止効果を達成することも可能である。
次に、溶接防止グリーン塗装層30に酸化防止層をメッキすることにより、露呈する溶接防止グリーン塗装層30及び導通穴が酸化することを防止することが可能である。これにより、半田付け作業は容易となる。
次に、成形機により、全体の金属回路板10が切断されると、設計された寸法通りの変圧器回路板100が得られる。
As shown in FIG. 10, a drilling step S6 for drilling a plurality of conductive holes between layers to pass the wiring, if necessary, is performed on the circuit structure of each metal circuit board 10 by an automatic drilling machine. Conducting holes are bored and the conducting holes of the metal circuit board 10 of each layer are plated by a horizontal plating facility, and then welding prevention ink is applied to the outer surface of each outer insulating layer 20 for screen printing. .. As a result, the welding prevention green coating layer 30 is formed on each outer insulating layer 20, and the metal circuit board 10 outside the exposed outer insulating layer 20 can be protected. Further, it is possible to avoid a short circuit and disconnection due to scratches, and it is also possible to achieve a welding prevention effect.
Next, by plating an anti-oxidation layer on the welding prevention green coating layer 30, it is possible to prevent the exposed welding prevention green coating layer 30 and the conductive hole from being oxidized. This facilitates the soldering work.
Next, when the entire metal circuit board 10 is cut by the molding machine, the transformer circuit board 100 having the designed dimensions is obtained.

この後、各導通穴に接合ピン50を半田付けることにより、変圧器回路板100の構造を固定する。
本実施形態では、各接合ピン50は、ほぼ上から下へ拡径する形状を呈し、その表面には、半田の各導通穴への流れ込みを容易にする導流溝51が設けられている。導流溝51は螺旋状を呈する。
After that, the structure of the transformer circuit board 100 is fixed by soldering the joining pins 50 into the respective conduction holes.
In the present embodiment, each joining pin 50 has a shape in which the diameter is expanded substantially from top to bottom, and a flow guide groove 51 that facilitates the flow of solder into each conduction hole is provided on the surface thereof. The flow guiding groove 51 has a spiral shape.

最後に、粘着方式により、磁気コアに変圧器回路板100を結合して変圧器を構成する。
次に、前記変圧器に対して、各テスト機器により、インダクタンス、巻き数比、漏れインダクタンス、電圧値、耐高圧などの特性をテストする。
以上により、漏れインダクタンスが低く、電磁シールドの効果が良い変圧器を得ることが可能である。
Finally, the transformer circuit board 100 is coupled to the magnetic core by an adhesive method to form a transformer.
Next, with respect to the transformer, characteristics such as inductance, turn ratio, leakage inductance, voltage value, and high voltage resistance are tested by each test device.
As described above, it is possible to obtain a transformer having a low leakage inductance and a good electromagnetic shield effect.

上記では、種々の実施の形態および変形例を説明したが、本発明はこれらの内容に限定されるものではない。本発明の技術的思想の範囲内で考えられるその他の態様も本発明の範囲内に含まれる。 Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other modes considered within the scope of the technical idea of the present invention are also included in the scope of the present invention.

10 金属回路板
11 第1の金属回路板
12 第2の金属回路板
13 第3の金属回路板
14 第4の金属回路板
20 外絶縁層
21 裏絶縁層
30 溶接防止グリーン塗装層
40 熱圧機
50 接合ピン
51 導流溝
100 変圧器回路板
101 軸穴
S1 プレス加工ステップ
S2 一回目の積上げステップ
S3 一回目の圧着ステップ
S4 二回目の積上げステップ
S5 二回目の圧着ステップ
S6 穴開けステップ
10 Metal Circuit Board 11 1st Metal Circuit Board 12 2nd Metal Circuit Board 13 3rd Metal Circuit Board 14 4th Metal Circuit Board 20 Outer Insulation Layer 21 Back Insulation Layer 30 Welding Prevention Green Paint Layer 40 Thermocompressor 50 Joining pin 51 Guide groove 100 Transformer circuit board 101 Shaft hole S1 Pressing step S2 First stacking step S3 First crimping step S4 Second stacking step S5 Second crimping step S6 Drilling step

本発明の変圧器回路板の作製方法は、プレス加工ステップと、一回目の積上げステップと、一回目の圧着ステップと、二回目の積上げステップと、二回目の圧着ステップと、を含むことを特徴とする。
プレス加工ステップでは、複数の金属回路板は、それぞれ金型によってプレス加工されて形成され、各金属回路板には、軸穴が同軸に設けられ、各金属回路板の形状は同じ又は異なる。
一回目の積上げステップでは、二つの外絶縁層の間に、これらの金属回路板が重ねられ、各軸穴により位置合わせされ、隣接する二つの金属回路板の間に裏絶縁層がそれぞれ設けられ、これにより、複数層が交錯して重なりあい金属回路板と裏絶縁層とが形成される。
一回目の圧着ステップでは、熱圧方式により、互いに隣接する、各外絶縁層と各裏絶縁層とが溶融されて結合されて、二つの外絶縁層の間に、これらの金属回路板が固定される。
二回目の積上げステップでは、一回目の圧着ステップの後、各外絶縁層の外側に、内側に位置する各金属回路板の軸穴に位置合わせされ、再度金属回路板が積上げられる。
二回目の圧着ステップでは、同じように熱圧方式により、二つの外絶縁層上に位置するこれらの金属回路板が緊密に結合されて、熱圧処理の後、スクリーン印刷を施されることにより、各外絶縁層に溶接防止グリーン塗装層が形成され、変圧器回路板が形成される。
The method for producing a transformer circuit board according to the present invention includes a press working step, a first stacking step, a first crimping step, a second stacking step, and a second crimping step. And
In the pressing step, the plurality of metal circuit boards are formed by pressing with a mold, and each metal circuit board is provided with a shaft hole coaxially, and the shape of each metal circuit board is the same or different.
In the first stacking step, these metal circuit boards are stacked between two outer insulating layers, aligned by each axial hole, and a back insulating layer is provided between each two adjacent metal circuit boards. As a result, the plurality of layers intersect and overlap with each other to form the metal circuit board and the back insulating layer.
In the first crimping step, each outer insulating layer and each back insulating layer, which are adjacent to each other, are melted and bonded by the hot pressing method, and these metal circuit boards are fixed between the two outer insulating layers. To be done.
In the second stacking step, after the first crimping step, the outer side of each outer insulating layer is aligned with the axial hole of each metal circuit board located inside, and the metal circuit boards are stacked again.
In the second crimping step, these metal circuit boards located on the two outer insulating layers are also tightly joined by the hot pressing method, and after the hot pressing treatment, screen printing is performed. welding prevention green paint layer on the outer insulating layer is formed, the transformer circuit board is formed.

本発明の変圧器回路板の作製方法によると、
複数層が交錯して重なりあい、金属回路板、外絶縁層、及び裏絶縁層において、各層の金属回路板は、水平方向に沿って等距離に複数枚敷かれており、隣り合う層にあるこれらの金属回路板は、互いに位置合わせされて積上げられることにより、一回で複数の変圧器回路板が作製される。
According to the method for manufacturing a transformer circuit board of the present invention,
In the metal circuit board, the outer insulation layer, and the back insulation layer, a plurality of layers are crossed and overlapped, and the metal circuit boards of the respective layers are laid at equal distances along the horizontal direction and are in adjacent layers. These metal circuit boards are aligned and stacked with each other to produce a plurality of transformer circuit boards at one time.

Claims (5)

複数の金属回路板がそれぞれ金型によってプレス加工して形成され、各前記金属回路板には軸穴が同軸に設けられ、各前記金属回路板の形状は同じ又は異なるプレス加工ステップと、
二つの外絶縁層の間に、これらの前記金属回路板が重ねられ、各前記軸穴により位置合わせられ、隣接する二つの金属回路板の間に裏絶縁層がそれぞれ設けられ、これにより複数層が交錯して重なる前記金属回路板と前記裏絶縁層とが形成される一回目の積上げステップと、
熱圧方式により、互いに隣接する各前記外絶縁層と各前記裏絶縁層とが溶融されて結合されて、前記二つの外絶縁層の間に、これらの前記金属回路板が固定される一回目の圧着ステップと、
前記一回目の圧着ステップの後、各前記外絶縁層の外側に、内側に位置する各前記金属回路板の軸穴に位置合わせされて、再度前記金属回路板が積上げられる二回目の積上げステップと、
同じように熱圧方式により、前記二つの外絶縁層上に位置するこれらの前記金属回路板が緊密に結合されて、熱圧の後、スクリーン印刷されることにより、各前記外絶縁層に溶接防止グリーン塗装層が形成され、最後に切断されて変圧器回路板が形成される二回目の圧着ステップと、
を含むことを特徴とする変圧器回路板の作製方法。
A plurality of metal circuit boards are respectively formed by pressing with a die, shaft holes are coaxially provided in each of the metal circuit boards, and the shape of each of the metal circuit boards is the same or different from the press step,
These metal circuit boards are stacked between two outer insulating layers, aligned by the shaft holes, and back insulating layers are respectively provided between two adjacent metal circuit boards, whereby a plurality of layers are interlaced. A first stacking step in which the metal circuit board and the back insulating layer that are overlapped with each other are formed,
A first time in which each of the outer insulating layers and each of the back insulating layers adjacent to each other are melted and bonded by a hot pressing method, and the metal circuit board is fixed between the two outer insulating layers. Crimping step of
After the first crimping step, on the outer side of each outer insulating layer, a second stacking step in which the metal circuit boards are stacked again by being aligned with the axial holes of the metal circuit boards located inside, and ,
Similarly, the metal circuit boards located on the two outer insulating layers are tightly joined by a hot pressing method, and after the hot pressing, screen printing is performed to weld them to the outer insulating layers. A second crimping step in which a protective green paint layer is formed and finally cut to form the transformer circuit board,
A method for manufacturing a transformer circuit board, comprising:
前記一回目の積上げステップと前記二回目の積上げステップとにおいて、各層のこれらの前記金属回路板は、互いに位置合わせされて積上げられて、X線により、各層の前記金属回路板の相対位置および回路がずれるかどうかが検査されて補正されることを特徴とする、請求項1に記載の変圧器回路板の作製方法。 In the first stacking step and the second stacking step, the metal circuit boards of each layer are stacked in alignment with each other, and the relative position and the circuit of the metal circuit boards of each layer are arranged by X-ray. The method for manufacturing a transformer circuit board according to claim 1, wherein whether or not there is a deviation is inspected and corrected. 前記二回目の積上げステップにおいて、これらの前記金属回路板は、第1の金属回路板と、第2の金属回路板と、第3の金属回路板と、第4の金属回路板と、を含み、
前記第1の金属回路板と前記第4の金属回路板とは、それぞれ前記二つの外絶縁層の外側に位置し、前記第2の金属回路板と前記第3の金属回路板とは、前記二つの外絶縁層の内側に設けられており、前記二つの外絶縁層の間で順に重なっており、
前記裏絶縁層は、前記第2の金属回路板と前記第3の金属回路板との間に設けられており、
前記金属回路板と前記外絶縁層および前記裏絶縁層が交錯して重ね合わされており、
前記第1の金属回路板と前記第4の金属回路板との重なり構造は互いに逆であり、
前記第2の金属回路板と前記第3の金属回路板との重なり構造は互いに逆であることを特徴とする、請求項2に記載の変圧器回路板の作製方法。
In the second stacking step, the metal circuit boards include a first metal circuit board, a second metal circuit board, a third metal circuit board, and a fourth metal circuit board. ,
The first metal circuit board and the fourth metal circuit board are respectively located outside the two outer insulating layers, and the second metal circuit board and the third metal circuit board are It is provided inside the two outer insulating layers and overlaps in order between the two outer insulating layers,
The back insulating layer is provided between the second metal circuit board and the third metal circuit board,
The metal circuit board and the outer insulating layer and the back insulating layer are overlapped with each other,
The overlapping structures of the first metal circuit board and the fourth metal circuit board are opposite to each other,
The method for manufacturing a transformer circuit board according to claim 2, wherein the overlapping structures of the second metal circuit board and the third metal circuit board are opposite to each other.
前記二回目の圧着ステップの後に、更に穴開けステップを含み、
前記穴開けステップは、各前記金属回路板の回路構造に配線が通過する導通穴が開けられて、各前記外絶縁層に前記溶接防止グリーン塗装層が印刷され、各前記導通穴に接合ピンが半田付けされ、これにより各前記金属回路板が接合して固定され、
各前記接合ピンは上から下へ拡径する形状を呈し、各前記接合ピンの表面には半田の各前記導通穴への流れ込みを容易にする導流溝が設けられており、前記導流溝は螺旋状を呈することを特徴とする、請求項1に記載の変圧器回路板の作製方法。
After the second crimping step, further including a drilling step,
In the drilling step, a conductive hole through which wiring passes is drilled in the circuit structure of each of the metal circuit boards, the welding prevention green coating layer is printed on each of the outer insulating layers, and a bonding pin is provided in each of the conductive holes. Soldered, thereby joining and fixing each of the metal circuit boards,
Each of the joining pins has a shape that expands in diameter from top to bottom, and a flow guide groove that facilitates the flow of solder into each of the conduction holes is provided on the surface of each of the connection pins. The method for manufacturing a transformer circuit board according to claim 1, wherein is a spiral shape.
複数層が交錯して重なっている前記金属回路板、前記外絶縁層級、及び前記裏絶縁層において、
各層の前記金属回路板は、水平方向に沿って等距離に複数枚敷かれ、
隣り合う層にあるこれらの前記金属回路板は、互いに位置合わせされて積上げられることにより、一回で複数の変圧器回路板が作製されることを特徴とする、請求項1に記載の変圧器回路板の作製方法。
In the metal circuit board in which a plurality of layers intersect and overlap, the outer insulating layer class, and the back insulating layer,
The metal circuit board of each layer is laid at a plurality of equal distances along the horizontal direction,
The transformer according to claim 1, wherein the metal circuit boards in adjacent layers are aligned with each other and stacked to form a plurality of transformer circuit boards at one time. Method of making a circuit board.
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498628B1 (en) * 1968-04-22 1974-02-27
JP2006013094A (en) * 2004-06-25 2006-01-12 Densei Lambda Kk Transformer structure
JP2006210524A (en) * 2005-01-26 2006-08-10 Matsushita Electric Ind Co Ltd Multilayered circuit board and its manufacturing method
JP2009049444A (en) * 2008-12-05 2009-03-05 Panasonic Corp Method of manufacturing multilayer circuit board
JP2014063838A (en) * 2012-09-20 2014-04-10 Toyota Industries Corp Intermediate body of planar coil and process of manufacturing planar coil
JP2015088595A (en) * 2013-10-30 2015-05-07 オムロンオートモーティブエレクトロニクス株式会社 Multilayer printed board and magnetic device
JP2018022842A (en) * 2016-08-05 2018-02-08 株式会社豊田自動織機 Sheet coil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS498628B1 (en) * 1968-04-22 1974-02-27
JP2006013094A (en) * 2004-06-25 2006-01-12 Densei Lambda Kk Transformer structure
JP2006210524A (en) * 2005-01-26 2006-08-10 Matsushita Electric Ind Co Ltd Multilayered circuit board and its manufacturing method
JP2009049444A (en) * 2008-12-05 2009-03-05 Panasonic Corp Method of manufacturing multilayer circuit board
JP2014063838A (en) * 2012-09-20 2014-04-10 Toyota Industries Corp Intermediate body of planar coil and process of manufacturing planar coil
JP2015088595A (en) * 2013-10-30 2015-05-07 オムロンオートモーティブエレクトロニクス株式会社 Multilayer printed board and magnetic device
JP2018022842A (en) * 2016-08-05 2018-02-08 株式会社豊田自動織機 Sheet coil

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