JPS6016156A - Laminated core thickness controller - Google Patents

Abstract

PURPOSE:To reduce the irregularity of the final laminated thickness of a laminated core by measuring the thickness of iron strips during running before laminating, and controlling the punching and laminating amount on the basis of the laminated value. CONSTITUTION:One or several points of iron strips 3 are measured in synchronization of the movement of the iron strips by a thickness detector 10 for measuring the thickness of the strips 3 during moving. The measured thickness is calculated by an arithmetic circuit 12 as the thickness for each laminated iron strip, and outputted as an integrated value. The output of the circuit 12 is compared by a comparator 13 with the prescribed value, and when it becomes the prescribed value, a punching die 2 is controlled to cut and erect it to form a punched hole with the erected projection, and to isolate as the strips of the prescribed thickness. Thus, the irregularity in the final thickness of the strips can be reduced.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、電動機２発電機等の電気機器の積層鉄心を製
造する際の積層鉄心積厚制御装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a laminated core thickness control device for manufacturing laminated cores for electrical equipment such as electric motors and generators.

従来例の構成とその問題点 電気機器の積層鉄心は、所定巾にスリットされた帯状鉄
板を、１列又は複数列、順次所定形状忙打抜き、この打
抜いた鉄板を、順次積層固着月切２１′− 起し突起で連結１−１所定枚数毎に切起１〜突起を抜き
落して、抜き孔とした鉄板により、積層鉄心１個分の厚
み毎に分離状態が得られるようにしている。しかし、一
般的に電気機器用鉄心に使用される帯状鉄板の板厚は■
ＩＳ規格において七１０％の許容巾があり、例えば５０
　ｙｎｍの積層鉄心の場合、０．５Ｍｍの鉄板を１００
枚積層すると、土６酊の積層厚バラツキを生じ、積層後
、手作業にて積層厚の調整を行なう必要があるなど後加
工上不具合であったり、電気特性上の問題を生じていた
。また、積層厚の調整を行なわないものにあっては、余
分に鉄板を使用したり製品の品質が安定しない欠点があ
った。このため、従来は積層固着ダイ内の先行する積層
鉄心より板厚の平均値を算出して、所定の積層枚数を計
算し、切離しを行なっていた。Conventional structure and problems The laminated iron core of electrical equipment is made by punching strip iron plates slit to a predetermined width in one or more rows into a predetermined shape, and then sequentially stacking and fixing the punched iron plates with monthly cutting 21. '- The raised protrusions are used to remove the cut protrusions 1 to 1 to the protrusions every predetermined number of pieces of the connection 1-1, and use the iron plate to form punched holes so that a separation state can be obtained for each thickness of one laminated core. However, the thickness of steel strips generally used for iron cores for electrical equipment is ■
In the IS standard, there is a tolerance width of 710%, for example, 50%.
In the case of a ynm laminated iron core, 100 0.5 mm iron plates are
When laminated, the thickness of the laminated layers would vary by 6 degrees, causing problems in post-processing such as the need to manually adjust the laminated thickness after lamination, and problems with electrical characteristics. In addition, in the case where the lamination thickness is not adjusted, there are drawbacks such as the use of an extra iron plate and unstable product quality. For this reason, in the past, the average value of the plate thickness was calculated from the preceding laminated cores in the lamination fixing die, the predetermined number of laminated sheets was calculated, and the laminated cores were separated.

しかし、この方法では、急激な板厚の変化の場合、最終
積層厚に誤差を生じ、又金型内にエアセンサ等の平均値
算出用センサを設けなければならない上、積層厚に応じ
てセンサの取付位置を変更しなければならない欠点があ
った。However, with this method, if there is a sudden change in the plate thickness, an error will occur in the final laminated thickness, and a sensor for calculating the average value, such as an air sensor, must be installed in the mold. There was a drawback that the mounting position had to be changed.

３　Ｉ　− 発明の目的 本発明は、前述の欠点を除去するもので、間欠的に走行
する帯状鉄板の板厚を打抜き前に、正確に検出して、精
度の高い積層厚鉄心を容易にし得ることを目的とするも
のである。3 I - OBJECT OF THE INVENTION The present invention eliminates the above-mentioned drawbacks, and can accurately detect the thickness of an intermittently running strip iron plate before punching, thereby facilitating the production of a highly accurate laminated thick iron core. The purpose is to

発明の構成 本発明は、走行中の帯状鉄板の板厚を板厚検出器にて測
定しこの板厚検出器からの信号を演算回路にて積算し、
この演算回路の出力と所定値とを比較回路にて比較し、
鉄心積層厚が所定厚となるよう制御し、最終積層厚のバ
ラツキを小さくするものである。Structure of the Invention The present invention measures the thickness of a running belt-shaped iron plate with a plate thickness detector, integrates the signal from the plate thickness detector with an arithmetic circuit,
The output of this arithmetic circuit and a predetermined value are compared in a comparator circuit,
The core lamination thickness is controlled to be a predetermined thickness, and the variation in the final lamination thickness is reduced.

実施例の説明 以下、本発明を添付図面に基づいて説明する。Description of examples Hereinafter, the present invention will be explained based on the accompanying drawings.

第１図において、１はプレス機械で、積層鉄心打抜き用
金型２が装着してあり、前方には帯状鉄板３をこの金型
に送り込む、送り装置４を有している。６は帯状鉄板３
の巻戻し装置５に於けるコイル支持部で、了は巻戻しロ
ーラーであり、後続して、帯状鉄板３のたるみ部８を設
けた帯状鉄板案内装置９を配置１〜で、プ１／ス機械１
の送り装置４によってなされる間欠送りと巻戻し装置５
による連続送りの緩衝を行なっている。このたるみ部８
と送り装置４の間に打抜き金型２とほぼ直線的に連なっ
た帯状鉄板走行ラインを構成し、と１７）フィン上に、
１対のローラーを有しローラー間に走行する帯状鉄板３
を一定圧力ではさみ込み、ローラー間隔の変化により板
厚を検出する検出部を、スプリング吊り下げ式懸架装置
（図示せず）等により支持した板厚検出器１ｏを位置せ
しめるとともに、この板厚検出器１ｏの前後には、帯状
鉄板案内装置９によって支持された振動防ＩＬ用ローラ
ー１１を具備して、プレス機械１の振動によって生じる
帯状鉄板３の上下振動を所定巾以下に規制している。周
知のごとくプレス機械は、打抜き時の衝撃を吸収するた
めクッション装置を有しており、打抜き時のプレス機械
上下動巾が２０ｔｎｍを越える場合もあり、当然のこと
ながらこのプレス機械に送り込まれる帯状鉄板も相当大
きな上下動となり、このような状態に於ては、板厚検出
部の懸５１τ　ン 架装置が充分追従せず実際の板厚とは異なった値を検出
してしまう。In FIG. 1, reference numeral 1 denotes a press machine, which is equipped with a die 2 for punching laminated cores, and has a feeding device 4 in front thereof for feeding a band-shaped iron plate 3 into the die. 6 is strip iron plate 3
At the coil support part in the unwinding device 5, 该 is an unwinding roller, followed by a strip iron plate guide device 9 provided with a slack part 8 of the strip iron plate 3, with the arrangement 1 to 1. Machine 1
Intermittent feeding and rewinding device 5 performed by feeding device 4 of
buffers continuous feeding. This slack part 8
and 17) on the fins, a belt-shaped iron plate running line is formed which is approximately linearly connected to the punching die 2 between the feeding device 4 and the punching die 2;
A band-shaped iron plate 3 that has a pair of rollers and runs between the rollers.
A plate thickness detector 1o is positioned in which a detecting part that detects the plate thickness by pinching the plate with a constant pressure and detects the plate thickness by changing the roller interval is supported by a spring hanging type suspension device (not shown) or the like. Vibration-proof IL rollers 11 supported by a belt-shaped iron plate guide device 9 are provided at the front and rear of the container 1o to restrict the vertical vibration of the belt-shaped iron plate 3 caused by the vibration of the press machine 1 to a predetermined width or less. As is well known, a press machine has a cushion device to absorb the shock during punching, and the vertical movement width of the press machine during punching may exceed 20 tnm. The iron plate also undergoes a considerable vertical movement, and in such a situation, the suspension device of the plate thickness detection section does not follow the plate thickness sufficiently and detects a value different from the actual plate thickness.

また、正確な積層厚を得るだめには、打抜かれた積層用
鉄板の打抜き中心と、板厚測定点とを相対させる事が望
ましく、しだがって、打抜き金型の積層固着ステーシコ
ン２ａ、２ｂ中心よシ、送りピッチの整数倍の距離に板
厚検出器１ｏを位置せしめである。In addition, in order to obtain accurate lamination thickness, it is desirable to make the punching center of the punched steel plate for lamination and the plate thickness measurement point face each other. The plate thickness detector 1o is positioned at a distance from the center that is an integral multiple of the feed pitch.

なお送りピッチや打抜きステーションの異なる鉄心製造
のため、板厚検出器１ｏは帯状鉄板３の長手方向及び巾
方向に移動できる構造（図示せず）としである。Since the core is manufactured using different feeding pitches and punching stations, the plate thickness detector 1o has a structure (not shown) that allows it to move in the longitudinal direction and width direction of the strip iron plate 3.

また、板厚検出器１ｏの支持部取付けに関しては、余分
な振動の影響を避けるため、帯状鉄板案内装置９とは独
立分離した方が望ましい。Further, regarding the attachment of the support part of the plate thickness detector 1o, it is preferable to separate it from the belt-like iron plate guide device 9 in order to avoid the influence of extra vibration.

第２図は制御回路を示すもので、走行中の帯状鉄板３の
板厚を測定する板厚検出器１ｏ（例えば、フライングマ
イクロメータ）にて、帯状鉄板上の１点又は、数点を帯
状鉄板３の走行にあわせて測定する。測定した板厚は、
積層鉄板ごとの板厚と６・°ソ して演算回路１２で計算し、積算値を出力する。Fig. 2 shows a control circuit, in which a plate thickness detector 1o (for example, a flying micrometer) measures the thickness of a running steel strip 3, and one point or several points on the steel strip are measured. Measurements are taken as the iron plate 3 travels. The measured plate thickness is
The arithmetic circuit 12 calculates by multiplying the thickness of each laminated iron plate by 6°, and outputs the integrated value.

この演算回路１２の出力と所定値を比較回路１３で比較
し、所定値になると、打抜き金型２を制御して切起し突
起を抜き孔とし打抜き、所定厚の積厚鉄心として切り離
す。以後、同様の動作を繰り返す。The output of the arithmetic circuit 12 is compared with a predetermined value by a comparator circuit 13, and when the predetermined value is reached, the punching die 2 is controlled to punch out the cut-and-raised protrusion as a punch hole and cut it out as a laminated iron core of a predetermined thickness. Thereafter, the same operation is repeated.

第３図は、」二記の方法に基づいて、生産した製品の積
層厚の状態を示すものである。なお板厚は０．５順で、
積層寸法は、４８．２±０．３ｍｍとした場合の測定寸
法である。FIG. 3 shows the state of the lamination thickness of the product produced based on the method described in "2". The board thickness is in order of 0.5,
The lamination dimension is a measured dimension when it is 48.2±0.3 mm.

以上のように、積層前の帯状鉄板３の板厚を測定し、そ
の測定板厚でもって、積層厚を計算し、積層厚を制御す
るものであシ、使用帯状鉄板の最大板厚（＋１０％）以
上には、積層厚のバラツキが生じない。As described above, the thickness of the steel strips 3 before lamination is measured, the lamination thickness is calculated using the measured thickness, and the lamination thickness is controlled. %) or more, there will be no variation in the laminated thickness.

積層厚の比較回路１３は、−例としてＮ枚積層した寸法
をＴＮとし、各板厚をｔｋとするとＴＳ≦ＴＮ＝　Σ　
ｔｋ　０） ｋ＝１ Ｔｓ：最小規格積層寸法 ７ミジ の計算を行ない、（１）式が満足すると切り離す。The lamination thickness comparison circuit 13 calculates, for example, if TN is the dimension of N laminated sheets and tk is the thickness of each sheet, then TS≦TN=Σ
tk 0) k=1 Ts: Calculate the minimum standard stacked size of 7 mm, and separate when formula (1) is satisfied.

Ｊｉた（１）式より ＴＮ≦Ｔ３　＋ｔ　ｍａｘ　（２） を満足するだめ、ＴＮのバラツキは、板厚の最大値以−
ににはならなく、製品の経済的および品質の向上に大い
に寄与する。From equation (1), if TN≦T3 +t max (2) is satisfied, the variation in TN must be less than the maximum value of the plate thickness.
This greatly contributes to improving the economy and quality of the product.

発明の効果 以上の説明から明らかなように本発明は、積層される前
の走行中の帯状鉄板の板厚を測定し、この積算値にもと
づいて打抜き積層量を制御するので、最終積層厚のバラ
ツキを小さくすることができ、品質が大幅に向上する。Effects of the Invention As is clear from the above explanation, the present invention measures the thickness of a running steel strip before being laminated, and controls the amount of laminated punching based on this integrated value, so that the final laminated thickness can be adjusted. Variations can be reduced and quality can be greatly improved.

また、積層厚の変化にも容易に対応することができるな
どすぐれた効果を奏する。Further, it has excellent effects such as being able to easily respond to changes in laminated thickness.

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

第１図は本発明の積層鉄心積厚制御装置の基本構成図、
第２図は同制御回路図、第３図は同積層厚測定結果を示
す図である。 １・・・・・・プレス機械、２・・・・・打抜き金型、
３・・・・・・帯状鉄板、４　・・・送り装置、９・・
・・・帯状鉄板案内装置、１０・・・・板厚検出器、１
２・・・・演算回路、１３・・・・比較回路。 代理人の氏名　弁理士　中　尾　敏　男　ほか１名第２
図FIG. 1 is a basic configuration diagram of the laminated core thickness control device of the present invention,
FIG. 2 is a control circuit diagram of the same, and FIG. 3 is a diagram showing the results of measurement of the lamination thickness. 1...Press machine, 2...Punching mold,
3... Steel strip, 4... Feeding device, 9...
... Strip steel plate guide device, 10... Plate thickness detector, 1
2... Arithmetic circuit, 13... Comparison circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure

Claims (1)

【特許請求の範囲】[Claims] 打抜き金型内の帯状鉄板送りラインとほぼ直線的に連な
る帯状鉄板走行ラインに配置した帯状鉄板板厚検出器と
、この帯状鉄板板厚検出器からの信号を演算する演算回
路と、この演算回路からの信号が所定値に達しだとき、
所定の鉄心積厚となるよう打抜き金型を制御する比較回
路とを備えた積層鉄心積厚制御装置。A strip iron plate thickness detector placed on a strip iron plate running line that is almost linearly connected to a strip iron plate feed line in a punching die, an arithmetic circuit that calculates a signal from this strip iron plate thickness detector, and this arithmetic circuit. When the signal from
A laminated core thickness control device comprising a comparison circuit that controls a punching die to achieve a predetermined core thickness.