JP2001185432A - Iron core manufacturing method and apparatus suiting same - Google Patents
Iron core manufacturing method and apparatus suiting sameInfo
- Publication number
- JP2001185432A JP2001185432A JP37011299A JP37011299A JP2001185432A JP 2001185432 A JP2001185432 A JP 2001185432A JP 37011299 A JP37011299 A JP 37011299A JP 37011299 A JP37011299 A JP 37011299A JP 2001185432 A JP2001185432 A JP 2001185432A
- Authority
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- Japan
- Prior art keywords
- iron core
- unit
- laminated
- punching
- core
- 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.)
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Links
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はモーターやトランス
などの加工性に優れた積層鉄芯の製造方法およびの製造
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a laminated iron core having excellent workability such as a motor and a transformer.
【０００２】[0002]
【従来の技術】従来、電磁鋼板を用いてモーターやトラ
ンス等の積層鉄芯を製造する方法としては、一般的には
電磁鋼板を剪断加工あるいは打ち抜きにより単位鉄芯と
し、さらに所定枚数の単位鉄芯を積層し、ボルト締め、
カシメ、溶接あるいは接着等により固着して積層鉄芯と
するものである。固着した後、その積層鉄芯には巻線コ
イルの組込み工程などの処理が施され、トランスやモー
ターの鉄芯に組み立てられるものである。2. Description of the Related Art Conventionally, as a method of manufacturing a laminated iron core such as a motor or a transformer using an electromagnetic steel sheet, generally, an electromagnetic steel sheet is sheared or punched into a unit iron core, and a predetermined number of unit iron cores are further formed. Laminate the core, tighten the bolts,
The laminated iron core is fixed by caulking, welding, bonding or the like. After being fixed, the laminated iron core is subjected to a process such as a winding coil assembling process, and is assembled into an iron core of a transformer or a motor.
【０００３】積層鉄芯の固着が弱い場合、単位鉄芯に解
けたり、隙間が開いたりするとコイルの巻線作業の能率
が落ちたり、モーターの場合では騒音や振動の原因とな
ることから、積層鉄芯は強く固着せしむる必要がある。[0003] When the laminated iron core is weakly fixed, the efficiency of the coil winding work is reduced if the laminated iron core is loosened or a gap is opened, and in the case of a motor, noise or vibration is caused. The iron core must be firmly fixed.
【０００４】ところで、ボルト締めにより固着する場合
には、ボルトを通す貫通孔を積層鉄芯に設けることが必
要である。積層鉄芯に貫通孔を設けた場合には積層鉄芯
の磁気特性が劣化することがある。同様に溶接により積
層鉄芯を固着する場合には、溶接部に熱的歪みが入るこ
とにより積層鉄芯の磁気特性が劣化することがある。In the case of fixing by bolting, it is necessary to provide a through hole for passing a bolt in the laminated iron core. When a through-hole is provided in the laminated iron core, the magnetic characteristics of the laminated iron core may deteriorate. Similarly, when the laminated iron core is fixed by welding, the magnetic characteristics of the laminated iron core may be degraded due to thermal distortion in the welded portion.
【０００５】また、接着剤やワニスを用いて積層鉄芯を
固着する場合には、鋼板と鋼板の間に毛細管現象を利用
して接着剤やワニスを浸透させ、しかる後加熱などによ
り固着するのであるが、接着剤やワニスが鋼板全面に浸
透せず、鋼板の端部のみ固着するといった問題点があ
る。When the laminated iron core is fixed by using an adhesive or varnish, the adhesive or varnish is penetrated by utilizing the capillary phenomenon between the steel plates, and then fixed by heating or the like. However, there is a problem that the adhesive or varnish does not permeate the entire surface of the steel sheet, and only the end of the steel sheet is fixed.
【０００６】そこで、現在では打抜きと同時に積層鉄芯
の固着が可能であるカシメによる固着が一般的である。
しかし、カシメでは強固な固着が難しく、トランスの組
み立て中に積層鉄芯がずれたり、またカシメにより磁気
特性が劣化することがあった。Therefore, at present, it is common to fix the laminated iron core by crimping, which can fix the laminated iron core simultaneously with the punching.
However, it is difficult to fix firmly by caulking, and the laminated iron core may be displaced during assembling of the transformer, and magnetic characteristics may be deteriorated by caulking.
【０００７】ところで、表面にあらかじめ接着能を持た
せた絶縁被膜、所謂接着被膜を施した鋼板を打抜き、積
層し、加熱加圧することにより積層鉄芯を固着した場合
には、溶接などに見られる磁気特性の劣化も無く、また
鋼板同士の接合力も大きいため、強固に固着した鉄芯が
得られるものである。しかし、従来接着被膜を有する電
磁鋼板を用いて積層鉄芯を固着する場合には、加熱加圧
するために加熱炉中で加圧する必要があったことから固
着作業に長時間を要し、作業性が劣るという問題点があ
った。In the case where a laminated steel core is fixed by punching, laminating, and applying heat and pressure, a steel sheet having an insulating film having a bonding function previously provided on the surface, that is, a so-called adhesive film, is observed in welding and the like. Since there is no deterioration in the magnetic properties and the bonding strength between the steel plates is large, an iron core firmly fixed can be obtained. However, when the laminated iron core is fixed using an electromagnetic steel sheet having an adhesive coating in the past, it was necessary to pressurize in a heating furnace in order to heat and press, so it took a long time for the fixing work, and workability was high. Is inferior.
【０００８】このような問題点を解決するため、特開平
１１−１４７１４１号公報に、接着被膜を施した電磁鋼
板を打抜き加工する際に、同時に加圧加熱することがで
きる装置を用いることにより、固着作業の作業性を飛躍
的に向上させる方法が開示されている。これは、打抜き
加工装置の打抜き金型下方に単位鉄芯の積層部を設け、
加熱装置により昇温するとともに雄型打抜き金型により
加圧することにより積層鉄芯を一体化するというもの
で、接着能を有する電磁鋼板を加熱加圧により固着する
場合、大幅に生産性が向上するものである。In order to solve such a problem, Japanese Patent Application Laid-Open No. H11-147141 discloses an apparatus which can simultaneously press and heat an electromagnetic steel sheet provided with an adhesive coating when punching the same. A method of dramatically improving the workability of the fixing work is disclosed. This is to provide a laminated part of the unit iron core below the punching die of the punching device,
The laminated steel core is integrated by raising the temperature with a heating device and pressing with a male punching die. When an electromagnetic steel sheet having an adhesive ability is fixed by heating and pressing, productivity is greatly improved. Things.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、この方
法では打抜金型と鉄芯を積層し加熱する部位が垂直方向
に積み重なるため、ストロークの長い大型のプレス装置
が必要で、ストロークの短いプレス装置では使用できな
いという問題点が有った。また、単位鉄芯積層部が打抜
金型直下に位置するため、プレスの振動などにより積層
面がずれ易いという問題点が有った。However, in this method, since the punching die and the iron core are stacked vertically and the portions to be heated are vertically stacked, a large-sized press having a long stroke is required, and a press having a short stroke is required. There was a problem that it could not be used. In addition, since the unitary iron core laminated portion is located directly below the punching die, there is a problem that the laminated surface is easily shifted due to vibration of the press or the like.
【００１０】本発明は、このような打抜加工装置と積層
鉄芯の固着装置が一体化した装置における問題点を解決
し、作業性よく積層鉄芯を得られる方法およびそれに適
する装置を提供するものである。[0010] The present invention solves the problems in the apparatus in which such a punching apparatus and the apparatus for fixing the laminated iron core are integrated, and provides a method for obtaining a laminated iron core with good workability and an apparatus suitable therefor. Things.
【００１１】[0011]
【課題を解決するための手段】即ち本発明は、 （１）表面に加熱加圧することにより接着能を発揮する
絶縁被膜が施されている電磁鋼板を、金型内に供給して
所定の形状に打ち抜き単位鉄芯とした後、加熱加圧によ
り接着する工程において、１）単位鉄芯を打ち抜き後、
該単位鉄芯を供給部材に形成されている打抜穴に押し戻
し、あるいは単位鉄芯を半抜きした後平押しを行い供給
部材へ押し戻し、２）供給部材の送りにより単位鉄芯を
単位鉄芯積層部に搬送し、３）単位鉄芯積層部に積層し
た後、あるいは積層しながら、所定の温度まで加熱し、
加圧することにより一体化させることを特徴とする積層
鉄芯の製造方法。 （２）単位鉄芯積層時に積層方向と垂直の方向から側圧
をかけながら積層することを特徴とする前項（１）記載
の積層鉄芯の製造方法。 （３）前記（１）又は（２）記載の積層鉄芯の製造方法
において、供給部材より単位鉄芯を連続的に打ち抜き単
位鉄芯とする際に、供給部材に所定回数毎に単位鉄芯形
状よりも大きな形状のジャンピング捨て抜きを行って、
その打抜穴を単位鉄芯積層部に一致させ、所定温度まで
加熱された積層鉄芯を加圧パンチで加圧し、あるいはさ
らに、その打抜穴に一体化した積層鉄芯を押し戻し、供
給部材を送ることにより積層鉄芯を装置外に排出するこ
とを特徴とする積層鉄芯の製造方法。であり、That is, the present invention provides: (1) A magnetic steel sheet provided with an insulating coating exhibiting an adhesive property by applying heat and pressure to a surface thereof is supplied into a mold, and a predetermined shape is supplied to the mold. In the step of bonding by heating and pressing after forming a unitary iron core into 1), after punching out the unitary iron core,
The unit iron core is pushed back into a punched hole formed in the supply member, or the unit iron core is half-punched and then flat pressed to be pushed back to the supply member. 2) The unit iron core is fed by feeding the supply member. 3) heating to a predetermined temperature after or while laminating on the unit core lamination,
A method for manufacturing a laminated iron core, comprising integrating by pressing. (2) The method for manufacturing a laminated iron core according to the above (1), wherein the lamination is performed while applying a side pressure from a direction perpendicular to the laminating direction when the unit iron cores are laminated. (3) In the method of manufacturing a laminated iron core according to the above (1) or (2), when the unit iron core is continuously punched out from the supply member to form the unit iron core, the supply iron is added to the supply member every predetermined number of times. Remove the jumping discarded shape larger than the shape,
The punched hole is made to coincide with the unitary iron core laminated portion, and the laminated iron core heated to a predetermined temperature is pressed with a pressure punch, or further, the laminated iron core integrated into the punched hole is pushed back, and a supply member is provided. The method for manufacturing a laminated iron core, comprising discharging the laminated iron core to the outside of the device by sending the laminated iron core. And
【００１２】（４）単位鉄心の内周側を打ち抜く雄型打
抜き金型と外周側を打ち抜くばねを内臓した雌型打抜き
金型とを有する打抜加工部と、ばねを備えた加圧パンチ
と積層加熱手段を有して打ち抜かれた単位鉄芯を積層
し、加熱・加圧する単位鉄芯積層部とを分離して備え、
打抜加工部によって打ち抜かれた単位鉄芯を、供給部材
へ押し戻して単位鉄芯積層部へ搬送し、積層した単位鉄
芯を加熱加圧することによって一体化することを特徴と
する積層鉄芯の製造装置。及び （５）単位鉄芯積層部に積層される鉄芯に対し側圧をか
けるダンパー機構を有することを特徴とする前記（４）
記載の積層鉄芯の製造装置である。(4) A punching section having a male punching die for punching the inner peripheral side of the unit core and a female punching die having a spring for punching the outer peripheral side, and a pressure punch having a spring. Laminated unit cores punched with laminating heating means, separately provided with a unit core laminated unit to be heated and pressurized,
The unitary iron core punched out by the punching unit is pushed back to the supply member, conveyed to the unitary iron core laminating unit, and integrated by heating and pressing the unitary core laminated. manufacturing device. And (5) a damper mechanism for applying a lateral pressure to the iron core laminated on the unitary iron core laminated portion, wherein (4).
It is a manufacturing apparatus of the laminated iron core described.
【００１３】[0013]
【発明の実施の形態】以下、本発明を実施する具体的形
態について説明する。本発明では、鉄芯に供する電磁鋼
板の表面に、加熱および加圧により接着能を発揮する絶
縁被膜、いわゆる接着被膜を有する必要がある。接着被
膜は必ずしも鋼板両面に全面に施されている必要は無
く、十分な接着能を保持しているのであれば片面だけで
も良いし、部分的でも良い。また、積層鉄芯に供する電
磁鋼板は無方向性電磁鋼板でも方向性電磁鋼板でもよ
く、一般的な鋼板を電磁鋼板として使用してもかまわな
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments for carrying out the present invention will be described. In the present invention, it is necessary to provide an insulating coating which exerts an adhesive property by heating and pressing, that is, a so-called adhesive coating, on the surface of the electromagnetic steel sheet provided for the iron core. The adhesive coating does not necessarily need to be applied to the entire surface of both sides of the steel sheet, and may be applied to only one surface or a partial surface as long as sufficient adhesion is maintained. Further, the magnetic steel sheet provided for the laminated iron core may be a non-oriented magnetic steel sheet or a directional magnetic steel sheet, and a general steel sheet may be used as the magnetic steel sheet.
【００１４】接着能を発揮する絶縁被膜としては、例え
ばエポキシ樹脂、アクリル樹脂、フェノール樹脂などの
有機樹脂を主成分とするものが一般的であるが、接着能
を発揮するものであれば特に限定するものではない。The insulating film exhibiting an adhesive property is generally composed mainly of an organic resin such as an epoxy resin, an acrylic resin or a phenol resin, but is not particularly limited as long as it exhibits an adhesive property. It does not do.
【００１５】本発明では単位鉄芯の加工には打抜金型に
より単位鉄芯を打ち抜く装置を用いる必要があり、金型
内に供給する電磁鋼板（供給部材）より単位鉄芯を打抜
金型にて打ち抜いた後、単位鉄芯毎に積層部まで搬送し
鉄芯積層部内に単位鉄芯を積層する。打ち抜かれた単位
鉄芯を積層部まで搬送するために、本発明では供給部材
を用いるものである。すなわち、所定の幅のコイル状に
あらかじめ鋼板をスリットした供給部材を、連続的に打
抜金型に送り込み、単位鉄芯に打ち抜いた際に、鉄芯を
打ち抜いた後の供給部材に残存する単位鉄芯形状の外側
の部分を用いて単位鉄芯を積層部まで搬送するものであ
る。即ち、供給部材より完全に単位鉄芯に打抜いて切り
離した後、供給部材に残存する外周部打抜穴に再び単位
鉄芯を押し戻す。あるいは、単位鉄芯形状に完全に打ち
抜かず、ほぼ板厚の２／３程度まで切り込む半抜き状態
にした後、単位鉄芯形状部と外周部分双方に均等に加圧
することにより単位鉄芯を完全に切り離すと共に、同時
に形成された外周部打抜穴に押し戻しても構わない。そ
の後、供給部材の送りにより単位鉄芯を積層部まで搬送
する。In the present invention, it is necessary to use a device for punching a unit iron core using a punching die for processing the unit iron core. The unit iron core is punched from an electromagnetic steel sheet (supply member) supplied into the die. After punching out with a mold, each unit iron core is conveyed to the lamination part and the unit iron core is laminated in the iron core lamination part. In the present invention, a supply member is used to transport the punched unit iron cores to the stacking unit. That is, the supply member, which has been previously slit into a coil having a predetermined width in a coil shape, is continuously fed into a punching die, and when punched into a unit iron core, the unit remaining in the supply member after punching the iron core. The unit iron core is transported to the lamination part using the outer part of the iron core shape. That is, after completely punching and separating the unit core from the supply member, the unit core is pushed back into the outer peripheral punching hole remaining in the supply member. Alternatively, without completely punching out the unit iron core shape, after making it into a half-blanking state in which it is cut to about ／ of the plate thickness, the unit iron core is completely pressed by evenly pressing both the unit iron core shape portion and the outer peripheral portion. At the same time, it may be pushed back to the simultaneously formed outer peripheral punching hole. Thereafter, the unit iron core is transported to the stacking unit by feeding the supply member.
【００１６】本発明では、図１に示すように、打抜金型
と積層部が供給部材と平行して配置することが可能であ
り、特開平１１−１４７１４１号公報に開示されている
技術では、使用するプレス装置に長いストロークが必要
になるのに対して、ストロークの短いプレス装置で十分
使用することができる。In the present invention, as shown in FIG. 1, it is possible to arrange a punching die and a lamination part in parallel with a supply member, and in the technique disclosed in Japanese Patent Application Laid-Open No. H11-147141. While a long stroke is required for a press device to be used, a short stroke press device can be used sufficiently.
【００１７】所定枚数の単位鉄芯が積層された後あるい
は積層している間に、積層部に隣接して設置した加熱装
置により積層鉄芯を所定温度まで昇温する。このとき、
積層された単位鉄芯の側面からダンパー機構を備えた側
圧装置を用いて積層鉄芯の端面揃えを行うものである。
しかる後、あるいは単位鉄芯が供給されるたび毎に加圧
装置にて加圧し、接着被膜の接着能を発現させ、積層さ
れた単位鉄芯を全体あるいは部分的に接着して鉄芯を固
着させるものである。上記加熱手段としては、通電加
熱、誘導加熱、誘電加熱、電磁波照射、直接接触加熱な
どが使用できる。After or while the predetermined number of unit cores are being laminated, the laminated iron core is heated to a predetermined temperature by a heating device installed adjacent to the lamination portion. At this time,
The end surfaces of the laminated iron cores are aligned from the side surfaces of the laminated unitary iron cores using a lateral pressure device provided with a damper mechanism.
Thereafter, or each time a unit iron core is supplied, pressurize it with a pressurizing device to develop the adhesiveness of the adhesive film, and adhere the laminated unit iron core in whole or in part to fix the iron core. It is to let. As the heating means, electric heating, induction heating, dielectric heating, electromagnetic wave irradiation, direct contact heating and the like can be used.
【００１８】本発明では上記加熱装置を打抜金型から離
れたところに設置することにより、積層鉄芯加熱時の打
抜き金型の熱変形を抑制でき、打抜き精度を確保するこ
とが可能で、さらに積層鉄芯を側圧装置より積層端面を
揃えることができることから、鉄芯の積み精度を高める
ことが可能である。In the present invention, by installing the above-mentioned heating device at a place away from the punching die, it is possible to suppress the thermal deformation of the punching die during the heating of the laminated iron core, and to ensure the punching accuracy. Furthermore, since the laminated iron cores can have the same lamination end face as the side pressure device, the stacking accuracy of the iron cores can be improved.
【００１９】次に本発明ではあらかじめ、単位鉄芯形状
よりも大きな捨て抜きをすることにより、所定枚数積層
された単位鉄芯にさらに加圧することが可能となり、固
着強度を高めることができる。すなわち、ジャンピング
捨抜き（所定枚数の単位鉄芯を打ち抜き後に供給部材に
捨抜穴を打ち抜き）し、さらに単位鉄芯の積層されてい
る積層部上方まで捨抜穴を送る。捨抜穴は鉄芯形状より
も大きくしているので、捨抜穴を通して加圧パンチによ
り加圧することが可能である。また、固着後積層鉄芯を
押し戻し、捨抜穴に挿入することにより、打ち抜き時の
送りを利用して積層鉄芯を金型外に排出することも可能
である。Next, according to the present invention, by previously discarding a unit iron core larger than the unit iron core shape, it is possible to further pressurize a predetermined number of laminated unit iron cores, thereby increasing the fixing strength. In other words, jumping is performed (a predetermined number of unit cores are punched, and then punched holes are punched in the supply member). Since the discarded hole is made larger than the iron core shape, it is possible to apply pressure through the discarded hole by a pressure punch. Further, by pushing back the laminated iron core after fixing and inserting it into the discarded hole, it is possible to discharge the laminated iron core out of the mold by using the feed at the time of punching.
【００２０】[0020]
【実施例】［実施例１］図１は本発明を実施する装置の
一例であって、モーターコアの単位鉄芯形状に、接着被
膜を施した電磁鋼板を打抜き、１枚毎に搬送し、積層す
る状態を示す断面説明図である。図において、１は単位
鉄芯を打ち抜く電磁鋼板（供給部材）、２は単位鉄芯の
内周を打ち抜く雄型金型、４は雄型金型２の対向位置に
対にセットされた雌型金型、３は単位鉄芯の外周を打ち
抜く雄型金型、２９は雄型金型３の対応位置に対にセッ
トされた雌型金型であり、その内部に、打ち抜かれた単
位鉄芯を押し戻し供給部材に嵌め込む外周打抜受け用ば
ね８が設置され、これらの雌雄金型群で打ち抜き加工部
を形成している。５は一定の加圧力を付与するスプリン
グ１２を内部に備えた加圧パンチであり、供給部材１に
支持される単位鉄芯を押出し受台に積層する。６は積層
された鉄芯、７は積層鉄芯の側面より加熱する加熱装
置、１０は積層鉄芯受台、１１は断熱部材であって、こ
れらで積層部を構成している。上記各金型及び加圧パン
チの打抜き及び加圧は同期連動される。図中９は金型台
である。[Embodiment 1] Fig. 1 shows an example of an apparatus for carrying out the present invention, in which an electromagnetic steel sheet provided with an adhesive coating in a unit iron core shape of a motor core is punched and conveyed one by one. It is sectional explanatory drawing which shows the state which laminates. In the figure, 1 is an electromagnetic steel plate (supply member) for punching a unit iron core, 2 is a male mold for punching the inner circumference of the unit iron core, and 4 is a female mold set in a pair at a position facing the male mold 2. The mold 3 is a male mold for punching the outer periphery of the unit iron core, and the numeral 29 is a female mold set in pairs at the corresponding positions of the male mold 3 and has a unit iron core punched therein. The outer peripheral punch receiving spring 8 is fitted to the push-back supply member, and a punched portion is formed by these male and female mold groups. Reference numeral 5 denotes a pressing punch having a spring 12 for applying a constant pressing force therein, and stacks a unit iron core supported by the supply member 1 on an extruding pedestal. 6 is a laminated iron core, 7 is a heating device for heating from the side of the laminated iron core, 10 is a laminated iron core cradle, and 11 is a heat insulating member, and these constitute a laminated portion. The punching and pressurization of the above-mentioned dies and pressurizing punches are synchronized with each other. In the figure, reference numeral 9 denotes a mold stand.
【００２１】コイル状に巻き取られた状態の供給部材１
は、送り装置により上記本発明装置内に連続的に送り込
まれる。この供給部材は打抜き金型の雄型２と雌型４に
よって内周側を打ち抜いた後、外周側を打抜き金型の雄
型３によって打ち抜く。打ち抜かれた単位鉄芯は打抜金
型の雌型２９内に設置されたばね８により打ち抜き後に
形成された供給部材１の抜打穴に押し戻し、嵌合され
る。この状態で供給部材１の送りに従って単位鉄芯は積
層部まで搬送される。Supply member 1 wound in a coil shape
Is continuously fed into the apparatus of the present invention by a feeding device. This supply member is punched on the inner peripheral side by a male die 2 and a female die 4 of a punching die, and then punched on the outer peripheral side by a male die 3 of a punching die. The punched unit iron core is pushed back and fitted into a punching hole of the supply member 1 formed after punching by a spring 8 installed in a female die 29 of a punching die. In this state, the unit iron core is transported to the laminating part according to the feed of the supply member 1.
【００２２】積層部に達した単位鉄芯は加圧パンチ５で
押しだし、積層鉄芯受け台１０上に積層される。この積
層鉄芯６は、スプリング１２によって加圧力を調整され
た加圧パンチ５で加圧されるとともに、加熱装置７にて
側面より加熱され、接着被膜が接着能を発揮する温度２
００℃まで昇温し固着される。積層部は断熱部材１１に
より金型台９と断熱されている。The unit iron cores that have reached the stacking section are extruded by the pressure punch 5 and stacked on the stacking iron core receiving table 10. The laminated iron core 6 is pressed by a pressing punch 5 whose pressing force is adjusted by a spring 12 and is also heated from the side by a heating device 7 so that the temperature of the adhesive coating 2 exerts an adhesive ability.
The temperature is raised to 00 ° C. to be fixed. The laminated portion is insulated from the mold table 9 by the heat insulating member 11.
【００２３】［実施例２］図２は本発明を実施する装置
の別の例であって、モーターコアの単位鉄芯形状に、接
着被膜を施した電磁鋼板１３を打抜き、１枚毎に搬送
し、積層している状態を示す断面説明図である。図にお
いて、１３は単位鉄芯を打ち抜く電磁鋼板（供給部
材）、１４は捨て抜き用打抜雄型金型、２８は雄型金型
１４の対向位置に対にセットされた雌型金型、１５は単
位鉄芯の内周を打ち抜く雄型金型、２７は雄型金型１５
の対向位置に対にセットされた雌型金型、１６は単位鉄
芯の外周を打ち抜く雄型金型、３０は雄型金型１６の対
応位置に対にセットされた雌型金型であり、内部に外周
打ち抜き受け用ばね２６が設置され、これらの内周、外
周打ち抜き用の雌雄金型群で打ち抜き加工部を形成して
いる。[Embodiment 2] FIG. 2 shows another example of an apparatus for practicing the present invention, in which an electromagnetic steel sheet 13 provided with an adhesive coating in a unit iron core shape of a motor core is punched and conveyed one by one. FIG. 4 is an explanatory cross-sectional view showing a state in which layers are stacked. In the figure, 13 is an electromagnetic steel plate (supply member) for punching out a unit iron core, 14 is a punching punching male die, 28 is a female die set as a pair at a position facing the male die 14, 15 is a male mold for punching the inner circumference of the unit iron core, and 27 is a male mold 15
, A male mold 16 for punching the outer periphery of the unit iron core; and 30, a female mold set for the male mold 16 at the corresponding position. An outer peripheral punch receiving spring 26 is provided inside, and a punched portion is formed by a group of male and female molds for the inner peripheral and outer peripheral punches.
【００２４】１７は一定の加圧力を付与するスプリング
２４を内部に備えた加圧パンチであり、供給部材１３に
支持される単位鉄芯を押し出し受台に積層する。１８は
積層された鉄芯、１９は積層鉄芯の側面を加圧する側圧
用加圧板、２０は側圧用加圧シリンダーであり、この１
９と２９でダンパー機構が構成される。２３は積層鉄芯
の側面より加熱する加熱装置、２１は積層鉄芯受台、２
２は断熱部材であって、これらで積層部を構成してい
る。図中２５は金型台である。上記した各金型及び加圧
パンチの打ち抜き及び加圧は同期連動されており、捨て
抜き用打抜金型１４と積層鉄心受台２１は、各々一定回
数毎に作動する機構となっている。Reference numeral 17 denotes a pressure punch provided with a spring 24 for applying a constant pressing force, and pushes the unit iron core supported by the supply member 13 onto an extrusion receiving table. Reference numeral 18 denotes a laminated iron core, 19 denotes a side pressure pressing plate for pressing the side surface of the laminated iron core, and 20 denotes a side pressure pressing cylinder.
9 and 29 constitute a damper mechanism. 23 is a heating device for heating from the side of the laminated iron core, 21 is a laminated iron core receiving table, 2
Reference numeral 2 denotes a heat insulating member, which constitutes a laminated portion. In the figure, reference numeral 25 denotes a mold stand. The punching and pressurization of the above-mentioned dies and pressurizing punches are synchronized with each other, and the punching die for discarding punching 14 and the laminated iron core pedestal 21 are configured to operate at predetermined times.
【００２５】コイル状に巻き取られた状態の供給部材１
３は送り装置により本発明装置内に連続的に送り込まれ
る。打抜き金型の雄型１５と雌型２７を有する打ち抜き
加工部によって内周側を打ち抜いた後、外周側を打抜き
金型の雄型１６と雌型３０によって板厚の２／３程度の
深さまで半打ち抜き加工される。半打ち抜き加工されて
形成された単位鉄芯は、加工時、雌型３０内に設置され
たばね２６により押し戻される反発力で完全に切断され
ると同時に、切断で供給部材１３に形成された打抜穴に
押し戻されて嵌合する。供給部材１３の送りに従って単
位鉄芯は積層部まで搬送され、加圧パンチ１７により押
し出されて積層する。スプリング２４によって加圧力を
調整された加圧パンチ１７で、積層部の受け台２１上に
積層された積層鉄芯１８は加圧され、側圧用シリンダー
２０により側圧用加圧板１９を介して積層方向と垂直の
方向である側面から加圧された端面ずれを防止しなが
ら、加熱装置２３にて側面より加熱され、接着被膜が接
着能を発揮する温度２００℃まで昇温される。The supply member 1 wound in a coil shape
3 is continuously fed into the apparatus of the present invention by a feeding device. After the inner peripheral side is punched by a punching portion having a male die 15 and a female die 27 of a punching die, the outer peripheral side is reduced to a depth of about ／ of the plate thickness by the male die 16 and the female die 30 of the punching die. It is half-punched. The unit iron core formed by half-punching is completely cut by the repulsive force pushed back by the spring 26 installed in the female mold 30 at the time of processing, and at the same time, the punch formed in the supply member 13 by cutting. It is pushed back into the hole and fits. The unit iron core is conveyed to the laminating section in accordance with the feed of the supply member 13, and is extruded by the pressure punch 17 and laminated. The laminated iron core 18 laminated on the receiving table 21 of the laminated portion is pressurized by the pressurizing punch 17 whose pressing force is adjusted by the spring 24, and is laminated by the lateral pressure cylinder 20 via the lateral pressure pressing plate 19 in the laminating direction. The heating device 23 heats the side surface from the side surface while preventing the end surface from being shifted from the side surface which is perpendicular to the direction, and the temperature is raised to a temperature of 200 ° C. at which the adhesive film exhibits the adhesive ability.
【００２６】供給部材より積層する所定枚数まで打抜い
た時に、捨抜き用打抜金型１４と２８により、所定形状
より大きな捨穴を打抜く。捨抜穴が積層部の加圧パンチ
１７上に位置したときに、加圧パンチ１７を用いて積層
鉄芯の再加圧を行うことにより、より強固な接着が可能
となる。受け台２１を上昇させて積層鉄芯１８を捨抜穴
を用いて、金型外に排出する。When a predetermined number of sheets to be laminated from the supply member are punched, a punched-out die larger than a predetermined shape is punched out by the punching dies 14 and 28. When the discarded hole is located on the pressing punch 17 of the laminated portion, by using the pressing punch 17 to repress the laminated iron core, stronger bonding can be achieved. The pedestal 21 is raised, and the laminated iron core 18 is discharged out of the mold using the discarded hole.
【００２７】[0027]
【発明の効果】本発明によれば、積層鉄芯の打抜き工程
にて連続的に鉄芯を固着することが可能であり、従来の
加熱炉を用いた固着でないので、短時間に接着被膜を有
する電磁鋼板を接着でき、さらにプレス装置のストロー
クが短い場合でも容易に用いることが可能で、積層鉄芯
の固着工程の作業性が大幅に向上するものである。According to the present invention, it is possible to fix the iron core continuously in the punching step of the laminated iron core, and since the fixing is not performed using the conventional heating furnace, the adhesive coating can be formed in a short time. The magnetic steel sheet can be adhered to the steel sheet, and can be easily used even when the stroke of the press device is short, so that the workability of the step of fixing the laminated iron core is greatly improved.
【図１】本発明方法における接着被膜を有する電磁鋼板
を単位鉄芯に打抜き、１枚毎に搬送し積層している状態
を示す。FIG. 1 shows a state in which an electromagnetic steel sheet having an adhesive coating according to the method of the present invention is punched into a unit iron core and conveyed and laminated one by one.
【図２】本発明方法における接着被膜を有する電磁鋼板
を単位鉄芯に打抜き、１枚毎に搬送し積層している状態
を示す。FIG. 2 shows a state in which an electromagnetic steel sheet having an adhesive coating in the method of the present invention is punched into a unit iron core, and is conveyed and laminated one by one.
１，１３ コイル状の電磁鋼板 ２，１５ 内周打抜金型の雄型 ３，１６ 外周打抜金型の雄型 ４，２７ 内周打抜金型の雌型 ５，１７ 加圧パンチ ６，１８ 積層鉄芯 ７，２３ 加熱装置 ８，２６ 外周打抜受け用スプリング ９，２５ 金型台 １０，２１ 積層鉄芯受台 １１，２２ 断熱部材 １２，２４ 加圧パンチ用スプリング １４ 捨抜き用打抜金型の雄型 １９ 側圧用加圧板 ２０ 側圧用加圧シリンダー ２８ 捨抜き用打抜き金型の雌型 ２９，３０ 外周打抜金型の雌型 1,13 Coiled electromagnetic steel sheet 2,15 Male die of inner peripheral punching die 3,16 Male die of outer peripheral punching die 4,27 Female die of inner peripheral punching die 5,17 Pressure punch 6 , 18 Laminated iron core 7,23 Heating device 8,26 Spring for perforated punching 9,25 Mold stand 10,21 Laminated iron core receiver 11,22 Insulation member 12,24 Spring for pressurized punch 14 Male die for punching die 19 Pressing plate for side pressure 20 Pressing cylinder for side pressure 28 Female die for punching die 29,30 Female die for peripheral punching die
───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 良 姫路市広畑区富士町１番地 新日本製鐵株 式会社広畑製鐵所内 (72)発明者 八木 祐介 姫路市網干区浜田1000番地 西芝電機株式 会社内 (72)発明者 稲井 稔 姫路市網干区浜田1000番地 西芝電機株式 会社内 Ｆターム(参考） 5E062 AA01 AC02 AC06 AC11 AC15 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Ryo Ito 1 Fujimachi, Hirohata-ku, Himeji-shi Nippon Steel Corporation Inside Hirohata Works (72) Inventor Yusuke Yagi 1000 Hamada, Aboshi-ku, Himeji-shi Nishiba Electric Co., Ltd. In-company (72) Inventor Minoru Inai 1000 Hamada, Aboshi-ku, Himeji-shi Nishiba Electric Co., Ltd. F-term (reference) 5E062 AA01 AC02 AC06 AC06 AC11 AC15
Claims (5)
発揮する絶縁被膜が施されている電磁鋼板を、金型内に
供給して所定の形状に打ち抜き単位鉄芯とした後、加熱
加圧により接着する工程において、１）単位鉄芯を打ち
抜き後、該単位鉄芯を供給部材に形成されている打抜穴
に押し戻し、あるいは単位鉄芯を半抜きした後平押しを
行い供給部材へ押し戻し、２）供給部材の送りにより単
位鉄芯を単位鉄芯積層部に搬送し、３）単位鉄芯積層部
に積層した後、あるいは積層しながら、所定の温度まで
加熱し、加圧することにより一体化させることを特徴と
する積層鉄芯の製造方法。1. An electromagnetic steel sheet provided with an insulating coating exhibiting an adhesive ability by applying heat and pressure to a surface thereof is supplied into a mold and punched into a predetermined shape to form a unit iron core. 1) After punching out a unit iron core, the unit iron core is pushed back into a punched hole formed in the supply member, or the unit iron core is half-punched and then flattened and pushed back to the supply member. 2) The unit core is conveyed to the unit core lamination part by feeding the supply member, and 3) After or while laminating the unit core unit, the unit is heated to a predetermined temperature and pressurized to be integrated. A method for manufacturing a laminated iron core, comprising:
から側圧をかけながら積層することを特徴とする請求項
１記載の積層鉄芯の製造方法。2. The method for manufacturing a laminated iron core according to claim 1, wherein the lamination is performed while applying a side pressure from a direction perpendicular to the laminating direction when the unit cores are laminated.
方法において、供給部材より単位鉄芯を連続的に打ち抜
き単位鉄芯とする際に、供給部材に所定回数毎に単位鉄
芯形状よりも大きな形状のジャンピング捨て抜きを行っ
て、その打抜穴を単位鉄芯積層部に一致させ、所定温度
まで加熱された積層鉄芯を加圧パンチで加圧し、あるい
はさらに、その打抜穴に一体化した積層鉄芯を押し戻
し、供給部材を送ることにより積層鉄芯を装置外に排出
することを特徴とする積層鉄芯の製造方法。3. The method for manufacturing a laminated iron core according to claim 1, wherein when the unit iron core is continuously punched out from the supply member to form a unit iron core, the supply iron member has a unit iron core shape every predetermined number of times. The punching hole of a larger shape is removed and the punched hole is made to coincide with the unit core lamination part, and the laminated iron core heated to a predetermined temperature is pressed with a pressure punch, or further, the punched hole A method for manufacturing a laminated iron core, comprising: pushing back a laminated iron core integrated into a device; and feeding the supply member to discharge the laminated iron core out of the apparatus.
型と外周側を打ち抜くばねを内蔵した雌型打抜金型とを
有する打ち抜き加工部と、ばねを備えた加圧パンチと積
層加熱手段を有して打ち抜かれた単位鉄芯を積層し、加
熱・加圧する単位鉄芯積層部とを分離して備え、打抜加
工部によって打ち抜かれた単位鉄芯を、供給部材へ押し
戻して単位鉄芯積層部へ搬送し、積層した単位鉄芯を加
熱加圧することによって一体化することを特徴とする積
層鉄芯の製造装置。4. A punching section having a male punching die for punching the inner peripheral side of a unit core and a female punching die having a spring for punching an outer peripheral side, and a pressure punch having a spring. Unit cores punched with a laminating heating means are laminated, and a unit core laminated unit to be heated and pressed is separately provided, and the unit core punched by the punching unit is pushed back to the supply member. A device for manufacturing a laminated iron core, wherein the unit is conveyed to a unitary iron core laminating unit, and the laminated unitary iron cores are integrated by heating and pressing.
側圧をかけるダンパー機構を有することを特徴とする請
求項４記載の積層鉄芯の製造装置。5. The apparatus for manufacturing a laminated iron core according to claim 4, further comprising a damper mechanism for applying a lateral pressure to the iron core laminated on the unitary iron core laminated portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37011299A JP4115640B2 (en) | 1999-12-27 | 1999-12-27 | Manufacturing method of laminated iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37011299A JP4115640B2 (en) | 1999-12-27 | 1999-12-27 | Manufacturing method of laminated iron core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001185432A true JP2001185432A (en) | 2001-07-06 |
| JP4115640B2 JP4115640B2 (en) | 2008-07-09 |
Family
ID=18496108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37011299A Expired - Fee Related JP4115640B2 (en) | 1999-12-27 | 1999-12-27 | Manufacturing method of laminated iron core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4115640B2 (en) |
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| JP2002282959A (en) * | 2001-03-23 | 2002-10-02 | Kawasaki Steel Corp | Manufacturing method and manufacturing device for core material for small-sized iron core |
| CN102637500A (en) * | 2011-02-11 | 2012-08-15 | 海德堡印刷机械股份公司 | Method for producing laminated magnetic core |
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| JP2002282959A (en) * | 2001-03-23 | 2002-10-02 | Kawasaki Steel Corp | Manufacturing method and manufacturing device for core material for small-sized iron core |
| CN102637500A (en) * | 2011-02-11 | 2012-08-15 | 海德堡印刷机械股份公司 | Method for producing laminated magnetic core |
| CN104959452A (en) * | 2015-06-11 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Stamping equipment |
| CN104959451A (en) * | 2015-06-11 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Punching equipment |
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