JPS6316607A - Manufacture of ballast core - Google Patents

Abstract

PURPOSE:To facilitate transferring cores which are coupled together and taken out in block shapes to an assembly process as they are and reduce the noise of a ballast by a method wherein the respective cores are punched out by one set of dice and, at the same time, coupling parts are formed and required number of cores are piled in the dice and the coupling parts of the respective types of the cores are coupled together. CONSTITUTION:A T-shape core 51 is defined at the center part of the width direction of core material 58 and L-shape cores 52 are provided on both sides of the T-shape core 51 facing each other and an I-shape core 53 is provided between a pair of pilot holes 54 formed at the borderline of the repetition of the patterns. The respective cores have narrow scrapped parts around them and, with such layout, the uniform side pressure is applied to the whole circumferences of the respective cores. Moreover, a plurality of half-punched coupling parts 56 are provided so as to make the approximately uniform force applied to the surfaces of the cores. The coupling parts 56 are formed by half-punching the core material 58 and, when the cores are piled, the projection part of one core is mated with the necessed part of the other core and those parts are fixed together by the side pressure created when the cores are punched out.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、特に漏洩変圧器型放電灯安定器に使用する。[Detailed description of the invention] [Industrial application field] The invention finds particular use in leaky transformer type discharge lamp ballasts.

鉄心の製造方法に関するものである。This invention relates to a method for manufacturing an iron core.

〔従来の技術〕[Conventional technology]

放電灯用漏洩変圧器型安定器の鉄心は、一般に第５図に
示すように、Ｔ形コア５１の両側にＬ形コア５２をそれ
ぞれ組合わせてコイル挿入の空隙を作り、上記空隙の１
次コイル２と２次コイル３との間に、Ｉ形コア５３の磁
路を設けるように構成されている。上記各コアの製造方
法としては。Generally, the iron core of a leaky transformer type ballast for a discharge lamp, as shown in FIG.
A magnetic path of an I-shaped core 53 is provided between the secondary coil 2 and the secondary coil 3. As for the manufacturing method of each of the above cores.

従来、第６図に示すように、Ｔ形コア５１と２個のＬ形
コア５２とを組合わせて同一コア材から打抜き、漏洩磁
路に使用する工形コア５３は、第７図に示すように別の
金型を用い別の材料から単独に打抜いていた。なお、打
抜かれた上記各コアはそれぞれ打抜き金型内から取出し
治具を介して連続的に押出されてくるが、１形コア５３
はもちろん、Ｔ形コア５１．Ｌ形コア５２もそれぞれ１
枚づつ分離された状態で取出されるため、それぞれのコ
アを所定枚数ごとに軽量し、テーピングやリベット、溶
接などの方法により各形コアごとにブロック化した上で
、組立て工程へ供給されていた。Conventionally, as shown in FIG. 6, a T-shaped core 51 and two L-shaped cores 52 are combined and punched from the same core material, and a shaped core 53 used for the leakage magnetic path is shown in FIG. They were individually punched from different materials using different molds. Note that each of the punched cores is continuously extruded from the punching die via a take-out jig, but the type 1 core 53
Of course, T-shaped core 51. The L-shaped core 52 is also 1 each.
Since each core is taken out separately, each core is made lighter by a predetermined number, and each type of core is made into blocks by taping, riveting, welding, etc., and then supplied to the assembly process. .

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記のように打抜きされた各コアは分離して取出される
ため、計量してブロック化する結合作業が必要であり、
騒音発生源であるコアの振動防止に対しては何ら方策が
なされていないため、安定器組立時に上記コアを組上げ
た鉄心を含む安定器全体をフェス含浸して、コア相互間
の固着処理が必要である。また、工形コア、Ｌ形コアと
工形コアとをそれぞれ別に金型製作していたため、金型
の費用がかさんでいた。Each core punched out as described above is taken out separately, so it is necessary to weigh and combine them into blocks.
Since no measures have been taken to prevent the vibration of the core, which is the source of noise, when assembling the ballast, the entire ballast, including the iron core assembled with the above-mentioned core, must be impregnated with a face, and the cores must be fixed together. It is. Furthermore, molds for the shaped core, L-shaped core, and shaped core were manufactured separately, which increased the cost of the mold.

本発明の目的は、工形コア、Ｌ形コア、１形コアのそれ
ぞれを１組の金型で打抜き、かつ打抜いた状態でそれぞ
れのコアをブロック化して取出すことができる安定器用
鉄心の製造方法を得ることである。The purpose of the present invention is to manufacture an iron core for a ballast in which each of a shaped core, an L-shaped core, and a 1-shaped core can be punched out using a set of molds, and each core can be made into blocks and taken out in the punched state. It's about getting a way.

ｃ問題点を解決するための手段〕 上記目的を達成するために、本発明による鉄心の製造方
法は、工形コア、Ｌ形コア、工形コアを１組の金型で打
抜くとともに、それぞれのコア自体に結合部を設けて、
打抜かれると同時に金型内で所定枚数積重ね、各コアを
ブロックの状態で取出せるようにする。Means for Solving Problem c] In order to achieve the above object, the method for manufacturing an iron core according to the present invention punches a shaped core, an L-shaped core, and a shaped core with a set of dies, and By providing a connecting part in the core itself,
At the same time as they are punched out, a predetermined number of cores are stacked in a mold so that each core can be taken out in the form of a block.

〔作用〕[Effect]

コア打抜き用の金型としては、工形コアを中心にして両
側にＬ形コアを配し、これら１組のバタンごとに設けら
れた１対のパイロット穴の間で工形コアを打抜くように
配置して、コア材に対する歩留りを向上させるとともに
、上記それぞれのコアには、コア打抜きと同時に半抜き
状態の結合部を各コアごとに少なくとも２個以上形成す
る。コアが打抜かれると同時に上記結合部は積み重ねら
れ、この際、上記結合部の半抜き状態の端面に生じる側
圧のために、積み重ねられたコアの結合部が元いに嵌合
して結合される。上記積み重ねられたコアが所定の枚数
に達した時に、プレス機械から排出されるようにすれば
、上記それぞれのコアは各種類ごとに所定枚数にブロッ
ク化さ九た状態取出される。The die for punching the core has L-shaped cores placed on both sides of the core, and the core is punched between a pair of pilot holes provided for each set of punches. In addition to improving the yield of the core material, at least two or more joint portions in a half-blanked state are formed for each core at the same time as the core is punched out. At the same time as the cores are punched out, the joint parts are stacked, and at this time, the joint parts of the stacked cores fit back together and are joined due to the lateral pressure generated on the half-blanked end faces of the joint parts. Ru. When the stacked cores reach a predetermined number, they are discharged from the press machine, and each type of core is cut into blocks and taken out in a predetermined number of blocks.

〔実施例〕〔Example〕

つぎに、本発明の実施例を図面とともに説明する。第１
図は本発明による安定器用鉄心の製造方法におけるコア
の打抜きしイアウド図、勇２図（ａ）〜（ｃ）は上記実
施例における結合部の例をそれぞれ示す図、第３図は上
記結合部の結合状態を示す断面図、第４図は漏洩変圧器
形蛍光灯安定器のコア寸法例を示す図、第５図は漏洩変
圧器形蛍光灯安定器を示す図で、（ａ）は平面図。Next, embodiments of the present invention will be described with reference to the drawings. 1st
The figure is a punched-out diagram of the core in the method for manufacturing a ballast core according to the present invention, Figures 2 (a) to (c) are diagrams showing examples of the joints in the above embodiment, and Figure 3 is the joint part. Figure 4 is a diagram showing an example of core dimensions of a leaky transformer type fluorescent lamp ballast, Figure 5 is a diagram showing a leaky transformer type fluorescent lamp ballast, and (a) is a plan view. figure.

（ｂ）は側面図である。漏洩変圧器型放電灯安定器の鉄
心は、第５図について上記した通り、工形コア５１と２
組のＬ形コア５３とにより構成されている。上記鉄心の
幅寸法Ｗおよび積み重ね厚さＨ１漏洩磁路の幅り、フー
プ状コア材の幅寸法Ｘには、一般につぎのような関係が
ある。すなわち。(b) is a side view. The iron core of the leakage transformer type discharge lamp ballast consists of shaped cores 51 and 2, as described above with respect to FIG.
It is composed of a set of L-shaped cores 53. The width W of the iron core, the stacked thickness H1, the width of the leakage magnetic path, and the width X of the hoop-shaped core generally have the following relationship. Namely.

Ｗ＞＞Ｈ Ｈ＞２ｈ Ｘ＞Ｈ の関係を有し、本発明゛は上記関係に特に注目して。W>>H H>2h X>H The present invention particularly focuses on the above relationship.

上記工形コア、Ｌ形−コア、工形コアを同一のフープコ
ア材５８からブロック化してｉ抜くことを特徴としたも
のである。第１図はフープ状コア材５８における各コア
の打抜きレイアウトを示したもので、工形コア５１をコ
ア材５８の幅方向中央に定め、その両側にＬ形コア５２
をそれぞれ対向だせて配し、上記バタンか繰返される境
目に設けた１対のパイロット穴５４の間に１形コア５３
を配置し、上記各コアはそれぞれ周辺を細幅のスクラッ
プで取囲まれているが、このようなレイアウトを行うこ
とによって、各コアの全周に均等な側圧がかれるように
なる。また、上記各コアは半抜き状の結合部５６をそれ
ぞれ複数個づづ、コア面にほぼ均等な力がかかるように
配設している。The above-mentioned shaped core, L-shaped core, and shaped core are made into blocks from the same hoop core material 58 and are cut out into blocks. FIG. 1 shows the punching layout of each core in the hoop-shaped core material 58, in which a shaped core 51 is set at the center in the width direction of the core material 58, and L-shaped cores 52 are placed on both sides of the punched core 51.
A type 1 core 53 is placed between a pair of pilot holes 54 provided at the boundary where the above-mentioned slam is repeated.
Each of the cores is surrounded by narrow scraps, but by arranging this layout, even lateral pressure can be applied to the entire circumference of each core. Further, each of the above-mentioned cores has a plurality of half-opened coupling portions 56 arranged so as to apply a substantially uniform force to the core surface.

上記結合部５６は第２図の（ａ’）　、　　（ｂ）　−
（ｃ）にそれぞれ例示するように、コア材５８を半抜き
状態に加工したものであって、上記コアを積み重ねた際
には、第３図に示すように凸部が他のコアの凹部に嵌合
し、コアを打抜いたときに生じる側圧により係止される
。第３図の最下面に示すコア材は、上記コア打抜きの際
に上記結合部５６を完全に打抜いたもので、金型に組込
まれた制御装置により、所定枚数ごとに１回づづ金型の
抜刀を深く打出すことによ゛り自動的に加工される。The connecting portion 56 is shown in FIG. 2 (a'), (b) -
As shown in FIG. 3(c), the core material 58 is processed into a half-blanked state, and when the cores are stacked, the convex portions fit into the concave portions of other cores as shown in FIG. They fit together and are locked by the lateral pressure generated when the core is punched out. The core material shown on the bottom surface of FIG. 3 has the joint portion 56 completely punched out during the core punching process, and is stamped into the mold once for each predetermined number of cores by a control device built into the mold. It is automatically processed by striking the sword deeply.

上起結吾部を完全に打抜いたコアを境にして、所定枚数
の打抜きニアがプレスの１ストロークごとに積み重ねら
れ、上記結合部５６の嵌合係止によりブロック化されて
取出される。このため、打抜かれたコアを計量してブロ
ック化する結合作業を必要とせず、プレスから取出され
たコアはそのまま組立て工程に送ることができ、しかも
１枚づつのコアは上記結合部によって相互に嵌合係止さ
れているため、コアの振動が抑制され、完成した安定器
の騒音低減が実現できる。A predetermined number of punched pieces are piled up for each stroke of the press, with the core from which the upper binding part is completely punched out, and are taken out as a block by the fitting and locking of the connecting part 56. Therefore, there is no need for a joining operation in which the punched cores are weighed and made into blocks, and the cores taken out from the press can be directly sent to the assembly process, and each core can be connected to each other by the joining part. Because they are fitted and locked, the vibration of the core is suppressed and the noise of the completed ballast can be reduced.

第４図は４０Ｗラビツドスタ一ト式蛍光灯用の漏洩変圧
器型安定器について、使用鉄心の各部首法を示す実施例
図であるが１図中に記入した実際の寸法は、ｌ灯用およ
び２灯用ともに上記に示した関係を満足している。Figure 4 is an example diagram showing each radical method of the iron core used for a leaky transformer type ballast for a 40W rabbit-start type fluorescent lamp. Both the two lamps satisfy the relationship shown above.

〔発明の効果〕〔Effect of the invention〕

上記のように本発明による安定器用鉄心の製造方法は、
Ｔ形、Ｌ形、■形の各コアよりなる漏洩変圧器型の安定
器用鉄心の製造方法において、上記各コアを１組の金型
で打抜くと同時に、上記コアにそれぞれ結合部を形成し
、上記金型内で所定枚数のコアを積み重ね、各コアの種
類ごとに上記結合部を結合させることにより、結合され
てブロック状で取出されるコアは計量、結合作業を必要
とせず、そのまま組立て工程に送ることができ、また、
上記結合部の結合によりコアの振動が抑制されるため安
定器騒音の低減をはかることができる。さらに、コア抜
き金型が１組でよいため、金型製作費用を安価にするこ
とが可能である。As described above, the method for manufacturing a ballast core according to the present invention includes:
In a method for manufacturing a leaky transformer-type ballast core consisting of T-shaped, L-shaped, and ■-shaped cores, each of the cores is punched out using a set of molds, and at the same time, connecting portions are formed on each of the cores. By stacking a predetermined number of cores in the mold and joining the joints for each type of core, the combined cores are taken out in a block shape and can be assembled as is without the need for weighing or joining work. can be sent to the process, and
Since vibration of the core is suppressed by the coupling of the coupling portion, ballast noise can be reduced. Furthermore, since only one set of core punching molds is required, the mold manufacturing cost can be reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明による安定器用鉄心の製造方法における
コアの打抜きレイアウト図、第２図（ａ）〜（ｃ）は上
記実施例における結合部の例をそれぞれ示す図、第３図
は上記結合部の結合状態を示す断面図、第４図は漏洩変
圧器型蛍光灯安定器のコア寸法例を示す図、第５図は漏
洩変圧器型蛍光灯安定器を示す図で、（ａ）は平面図、
（ｂ）は側面図、第６図は従来の漏洩変圧器型安定器の
コア打抜きレイアウトを示す図、第７図は従来の■形コ
アの打抜レイアウトを示す図である。 ５１・・・Ｔ形コア、５２・・・Ｌ形コア、５３・・・
１形コア、５６・・・結合部。 第　　１　　図 ）　５　凹 ＄　７　図FIG. 1 is a punched layout diagram of a core in the method for manufacturing a ballast core according to the present invention, FIGS. 2(a) to (c) are diagrams showing examples of joints in the above embodiment, and FIG. 3 is a diagram showing the above joints. 4 is a diagram showing an example of the core dimensions of a leaky transformer type fluorescent lamp ballast. Figure 5 is a diagram showing a leaky transformer type fluorescent lamp ballast. Plan view,
(b) is a side view, FIG. 6 is a diagram showing a core punching layout of a conventional leaky transformer type ballast, and FIG. 7 is a diagram showing a conventional ■-shaped core punching layout. 51...T-shaped core, 52...L-shaped core, 53...
Type 1 core, 56... joint part. Fig. 1) 5 Concave $ 7 Fig.

Claims (1)

【特許請求の範囲】[Claims] １、Ｔ形、Ｌ形、Ｉ形の各コアよりなる漏洩変圧器の安
定器用鉄心の製造方法において、上記各コアを１組の金
型で打抜くと同時に、上記コアにそれぞれ結合部を形成
し、上記金型内で所定枚数のコアを積み重ね、各コアの
種類ごとに上記結合部を結合させることを特徴とする安
定器用鉄心の製造方法。1. In a method for manufacturing a ballast core for a leaky transformer consisting of T-shaped, L-shaped, and I-shaped cores, each of the cores is punched out using a set of molds, and at the same time, connecting portions are formed in each of the cores. A method of manufacturing an iron core for a ballast, characterized in that a predetermined number of cores are stacked in the mold, and the connecting portions are connected for each type of core.