JP2003143814A - Manufacturing method for washing machine motor - Google Patents

Manufacturing method for washing machine motor

Info

Publication number
JP2003143814A
JP2003143814A JP2001333366A JP2001333366A JP2003143814A JP 2003143814 A JP2003143814 A JP 2003143814A JP 2001333366 A JP2001333366 A JP 2001333366A JP 2001333366 A JP2001333366 A JP 2001333366A JP 2003143814 A JP2003143814 A JP 2003143814A
Authority
JP
Japan
Prior art keywords
series
washing machine
iron core
punching
motor
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.)
Pending
Application number
JP2001333366A
Other languages
Japanese (ja)
Inventor
Hironobu Yoshioka
宏展 吉岡
Etsuo Nakazawa
悦雄 中澤
Original Assignee
Nidec Shibaura Corp
日本電産シバウラ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nidec Shibaura Corp, 日本電産シバウラ株式会社 filed Critical Nidec Shibaura Corp
Priority to JP2001333366A priority Critical patent/JP2003143814A/en
Publication of JP2003143814A publication Critical patent/JP2003143814A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method for a washing machine motor with layered cores capable of improving the utilization efficiency of a core material and having sufficiently high strength. SOLUTION: One band-shaped steel sheet 15 is punched to form a plurality of series jointed bodies 1 where roughly T-shaped divided pieces 16 are serially continuous. At this time, the pair of series jointed bodies 1 are punched in such arrangement that teeth 11 may engage with each other. After the layered cores 2 are obtained by means of a layering process of stacking the series jointed bodies 1 to be stacked, and a process of curving respective V-shaped cut sections 14 to be closed, insert forming is performed, so that the roughly whose section is covered with resin mold 3 and a mount 31 is integrally provided.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【発明の属する技術分野】本発明は、洗濯機等の防水性
が要求される機器に用いられる駆動用のモーターに関
し、特にはダイレクトドライブ方式の洗濯機用モータに
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive motor used in a device such as a washing machine that is required to be waterproof, and more particularly to a direct drive type washing machine motor.
【0002】[0002]
【従来の技術】モーターの固定子に用いる積層鉄心は、
通常、ケイ素鋼板等を円環状または円盤状に打ち抜いて
所定の寸法及び形状の打ち抜き鋼板とした後、寸法及び
形状が同一の打ち抜き鋼板を重ね合わせて得たものであ
る。ところが、円環状に打ち抜く場合、円環状に打ち抜
く個所の内側及び外側にある鋼板の部分が利用されない
こととなっていた。
2. Description of the Related Art Laminated iron cores used for motor stators are
Usually, it is obtained by punching a silicon steel plate or the like into an annular or disc shape to form a punched steel plate having a predetermined size and shape, and then stacking punched steel plates having the same size and shape. However, when punching into an annular shape, the steel plate portions inside and outside the annular punching portion are not used.
【0003】最近、洗濯機の駆動用に、低騒音・低振動
等の目的からダイレクトドライブ方式のモーターが採用
されつつあるが、このようなモーターでは、積層鉄心が
リム状(環縁状)をなすため、ケイ素鋼板等の鉄心材料
の利用効率が低かった。
Recently, a direct drive type motor is being used for driving a washing machine for the purpose of low noise and low vibration. In such a motor, the laminated iron core has a rim shape (ring edge shape). Therefore, the utilization efficiency of the iron core material such as the silicon steel plate was low.
【0004】また、積層鉄心及び固定子の強度を充分に
高めることが困難であり、特には、洗濯機をダイレクト
ドライブ方式で駆動する際に求められるような充分な防
湿性を付与することが困難であった。
Further, it is difficult to sufficiently increase the strength of the laminated iron core and the stator, and in particular, it is difficult to impart sufficient moistureproofness required when the washing machine is driven by the direct drive system. Met.
【0005】[0005]
【発明が解決しようとする課題】本発明は、このような
問題点に鑑みなされたものであり、積層鉄心を備える洗
濯機用モータの製造方法において、鉄心材料の利用効率
を高めるとともに、充分な強度及び防湿性を有するモー
タを製造することのできる方法を提供するものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in a method of manufacturing a motor for a washing machine including a laminated iron core, the utilization efficiency of the iron core material is increased and sufficient A method capable of manufacturing a motor having strength and moisture resistance.
【0006】[0006]
【課題を解決するための手段】本発明の洗濯機用モータ
の製造方法は、帯状の鋼板を打ち抜くことにより、円弧
状の継鉄部と歯部よりなる鉄心構成片が切り欠きと該切
り欠きの底に位置する連結部とを介して直列に連続する
形態の直列連結体を形成しつつ積層する打ち抜き・積層
工程と、前記打ち抜き・積層工程の後に、前記直列連結
体について、前記切り欠きを閉じるように環状または円
弧状に湾曲させる湾曲工程と、前記湾曲工程を経て固定
子の鉄心を得た後、該鉄心を金型に収納してインサート
成形を施すことにより、該鉄心の表面が、回転子の外周
面と対峙する面を除き、電気絶縁性を備えた樹脂モール
ドにより被覆されるようにする樹脂モールド形成工程
と、前記鉄心の樹脂モールドが施された各歯部の周り
に、コイルを巻き付ける巻き線工程とを備えることを特
徴とする。
In a method for manufacturing a motor for a washing machine according to the present invention, a strip-shaped steel plate is punched out so that an iron core constituting piece composed of an arc-shaped yoke portion and a tooth portion is a notch and the notch. The punching / laminating step of stacking while forming a series connected body in a form that is continuous in series via the connecting portion located at the bottom of the, and after the punching / laminating step, the notch is formed in the series connected body. A bending step of bending in an annular or arc shape so as to close, after obtaining an iron core of the stator through the bending step, the iron core is housed in a mold and subjected to insert molding, whereby the surface of the iron core is A resin mold forming step of covering with a resin mold having electric insulation except the surface facing the outer peripheral surface of the rotor, and a coil around each tooth part of the iron core on which the resin mold is applied. Wrap around Characterized in that it comprises a winding process.
【0007】上記構成により、鉄心材料の利用効率を高
めるとともに、充分な強度及び防湿性を有するモータを
製造することができる。
With the above structure, it is possible to improve the utilization efficiency of the iron core material and manufacture a motor having sufficient strength and moisture resistance.
【0008】好ましくは、前記樹脂モールド形成工程に
おいて、前記固定子を洗濯機のフレーム構造に固定する
ための取付部が同時に形成される。
Preferably, in the resin mold forming step, a mounting portion for fixing the stator to the frame structure of the washing machine is simultaneously formed.
【0009】また、好ましくは、前記打ち抜き・積層工
程において、複数列の前記直列連結体が形成され、一の
前記直列連結体の歯部が、その隣の前記直列連結体の歯
部の間に配置された状態に打ち抜きが行われる。
Further, preferably, in the punching and laminating step, a plurality of rows of the serial connection bodies are formed, and one tooth portion of the series connection body is located between the tooth portions of the adjacent serial connection body. The punching is performed in the arranged state.
【0010】[0010]
【発明の実施の形態】本発明の実施例について、図1〜
2を用いて説明する。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to FIGS.
2 is used for the explanation.
【0011】実施例のモータは、洗濯機をダイレクトド
ライブ方式で駆動する、インナロータ型のブラシレスD
Cモータである。
The motor of the embodiment is an inner rotor type brushless D for driving a washing machine by a direct drive system.
It is a C motor.
【0012】図1は、積層鉄心を構成する鉄心板を得る
ための、帯状のケイ素鋼板からの打ち抜きの様子につい
て示す平面図である。図2は、得られた積層鉄心の周り
に樹脂モールドを形成した様子を示す。
FIG. 1 is a plan view showing a state of punching from a band-shaped silicon steel plate to obtain an iron core plate constituting a laminated iron core. FIG. 2 shows a state where a resin mold is formed around the obtained laminated iron core.
【0013】図示の例では、1本の帯状の鋼板15か
ら、4列の分割片の直列連結体1が打ち抜かれる。直列
連結体1は、円弧状の継鉄部12と、この中央から突き
出す一つの歯部11とからなる略T字状の分割片16
が、該T字の左右方向に、互いに直列に連結された形状
のものである。詳しくは、横方向に隣り合う分割片16
は、該T字の左右端同士、すなわち円弧状の継鉄部12
の両端同士が、V字状切り欠き14と、この切り欠き1
4の谷底に位置する、わずかな寸法の連結部13とを介
して互いに連続している。
In the illustrated example, four strips of the serially connected body 1 of four rows are punched out from one strip-shaped steel plate 15. The series connection body 1 is a substantially T-shaped divided piece 16 including an arc-shaped yoke portion 12 and one tooth portion 11 protruding from the center.
Is in the shape of being connected in series with each other in the left-right direction of the T-shape. Specifically, the divided pieces 16 that are laterally adjacent to each other
Is the left and right ends of the T-shape, that is, the arc-shaped yoke portion 12
Both ends of the V-shaped notch 14 and the notch 1
4 are continuous with each other via a small-sized connecting portion 13 located at the valley bottom.
【0014】また、図に示すように、隣り合う一対の直
列連結体1は、歯部11が互いに噛み合うような配置に
て打ち抜かれる。そのため、帯状鋼板15の面積のう
ち、直列連結体1に取り込まれる部分の割合は極めて高
く、鋼板の利用効率を最大とすることができる。
Further, as shown in the drawing, the pair of adjacent series-connected bodies 1 are punched in such a manner that the tooth portions 11 mesh with each other. Therefore, in the area of the strip-shaped steel plate 15, the ratio of the portion taken into the series connection body 1 is extremely high, and the utilization efficiency of the steel plate can be maximized.
【0015】打ち抜きは、例えば、連続して供給される
帯状鋼板15から、帯状鋼板15の連続方向に、連続し
て打ち抜いて行く方式で行うことができる。
The punching can be performed, for example, by a method in which the strip-shaped steel plates 15 continuously supplied are continuously punched in the continuous direction of the strip-shaped steel plates 15.
【0016】このように得られた直列連結体1から、例
えば、次の方法により積層鉄心を作製することができ
る。まず、直列連結体1を積層させてかしめることによ
り、ストレート状の積層物を得る。次いで、各V字状切
り欠き14を閉じるように湾曲させることにより、円環
状の固定子の積層鉄心2(図2)を完成させる。
From the series-connected body 1 thus obtained, for example, a laminated core can be manufactured by the following method. First, the series-connected body 1 is laminated and caulked to obtain a straight laminated body. Next, the V-shaped notches 14 are curved so as to be closed to complete the laminated core 2 (FIG. 2) of the annular stator.
【0017】図2中に示すように、積層鉄心2は、固定
子のフレーム構造をなす円環状の継鉄部22と、この内
周面から突き出す各歯部21とからなる。継鉄部22に
は、各鋼板を積層方向に押さえ付けるとともに、鋼板の
ズレを防止するための留め金25が、外周面側に、所定
角度ごとに配置されている。
As shown in FIG. 2, the laminated iron core 2 comprises an annular yoke portion 22 forming a frame structure of the stator and tooth portions 21 protruding from the inner peripheral surface thereof. Clasps 25 for pressing the steel plates in the stacking direction and for preventing the steel plates from being displaced are arranged on the yoke portion 22 on the outer peripheral surface side at predetermined angles.
【0018】このように得られた積層鉄心2が不図示の
金型に収納され、金型内にモールド形成用の溶融樹脂が
注入される。このようなインサート成形により、積層鉄
心2が外周面を含めてモールド樹脂3により被覆され
る。但し、歯部21の先端面21a、すなわち、回転子
が組み付けられた際に、回転子の磁極の先端面と近接し
て対峙する面だけは、被覆されずに露出されたままであ
る。
The laminated iron core 2 thus obtained is housed in a mold (not shown), and molten resin for mold formation is injected into the mold. By such insert molding, the laminated iron core 2 including the outer peripheral surface is covered with the mold resin 3. However, only the front end surface 21a of the tooth portion 21, that is, the surface that faces the front end surface of the magnetic pole of the rotor when the rotor is assembled, is left uncovered and exposed.
【0019】言い換えるならば、図2に示すように、各
歯部21の周面と、円環状の継鉄部22の全表面とが樹
脂モールド3によって完全に被覆される。すなわち、各
歯部21におけるスロット側の面、及びモータ軸方向に
面した上下の面が被覆されるとともに、円環状の継鉄部
22におけるスロット側の面、外周面及び上下の端面が
完全に被覆される。
In other words, as shown in FIG. 2, the peripheral surface of each tooth portion 21 and the entire surface of the annular yoke portion 22 are completely covered with the resin mold 3. That is, the slot-side surface of each tooth portion 21 and the upper and lower surfaces facing the motor axial direction are covered, and the slot-side surface, outer peripheral surface, and upper and lower end surfaces of the annular yoke portion 22 are completely covered. To be covered.
【0020】また、図中に示すように、モーターを洗濯
機のフレームに取り付けるための取付部31が、インサ
ート成形により同時に形成される。取付部31には、取
付ネジを挿通するための金属製の巻きブッシュインサー
ト32が埋め込まれている。
Further, as shown in the drawing, a mounting portion 31 for mounting the motor on the frame of the washing machine is simultaneously formed by insert molding. A metal winding bush insert 32 for inserting a mounting screw is embedded in the mounting portion 31.
【0021】樹脂モールド3を形成するための樹脂に
は、例えば、高耐久性の熱可塑性樹脂であるポリフェニ
レンサルファイド(PPS)樹脂を用いることができ
る。しかし、強化ポリエチレンテレフタレート(PE
T)樹脂等の汎用エンプラを用いることもでき、場合に
よっては、強化ポリプロピレン(PP)樹脂等の汎用熱
可塑性樹脂を用いることもできる。また、エポキシ樹
脂、シリコーン樹脂等の熱硬化性樹脂を用いることもで
きる。いずれであっても、必要な強度、耐久性、防湿性
等を備え、適当な成形性を有するものならば使用可能で
ある。
As the resin for forming the resin mold 3, for example, polyphenylene sulfide (PPS) resin which is a highly durable thermoplastic resin can be used. However, reinforced polyethylene terephthalate (PE
It is also possible to use general-purpose engineering plastics such as T) resin, and in some cases, general-purpose thermoplastic resin such as reinforced polypropylene (PP) resin. Also, a thermosetting resin such as an epoxy resin or a silicone resin can be used. In any case, any one can be used as long as it has necessary strength, durability, moisture resistance and the like and has appropriate moldability.
【0022】上記のインサート成形の後、樹脂モールド
3が施された各歯部22の周面にコイルが巻き付けられ
て、固定子が完成される。
After the insert molding described above, a coil is wound around the peripheral surface of each tooth portion 22 on which the resin mold 3 is applied, and the stator is completed.
【0023】以上に説明した実施例によると、まず、積
層鉄心を作製するための鋼板材料の利用効率をほぼ最大
とすることができる。また、積層鉄心が歯部先端面を除
き防湿性の樹脂材料により被覆されているため、湿度の
高い環境に長期間おかれた場合にも錆の発生を充分に抑
制することができる。
According to the embodiments described above, first, the utilization efficiency of the steel sheet material for producing the laminated core can be maximized. Further, since the laminated iron core is covered with the moisture-proof resin material excluding the tooth tip end surface, the generation of rust can be sufficiently suppressed even when the laminated iron core is exposed to a high humidity environment for a long period of time.
【0024】また、積層鉄心を各分割片から構成して
も、一体の樹脂モールド3が全体を覆うことにより、固
定子の強度及び一体性を充分に高めることができるの
で、振動による騒音を充分に小さくすることができる。
Even if the laminated core is composed of the divided pieces, since the integral resin mold 3 covers the whole, the strength and the integrity of the stator can be sufficiently enhanced, so that the noise caused by the vibration is sufficiently generated. Can be made smaller.
【0025】上記実施例においては、インナロータ型の
モーターを例にとり説明したが、アウタロータ型であっ
ても全く同様である。
In the above embodiment, the inner rotor type motor has been described as an example, but the same applies to the outer rotor type motor.
【0026】[0026]
【発明の効果】積層鉄心を備える洗濯機用モータの製造
方法において、鉄心材料の利用効率を高めるとともに、
充分な強度を有するモータを製造することができる。
INDUSTRIAL APPLICABILITY In a method of manufacturing a motor for a washing machine having a laminated iron core, the utilization efficiency of the iron core material is increased, and
A motor having sufficient strength can be manufactured.
【図面の簡単な説明】[Brief description of drawings]
【図1】積層鉄心を構成する鉄心板を得るための、帯状
のケイ素鋼板からの打ち抜きの様子について示す平面図
である。
FIG. 1 is a plan view showing how a band-shaped silicon steel plate is punched to obtain an iron core plate that constitutes a laminated iron core.
【図2】積層鉄心をインサート成形により樹脂で被覆し
た様子を示す模式的な一部切り欠き部分斜視図である。
FIG. 2 is a schematic partially cutaway perspective view showing a state in which a laminated core is covered with a resin by insert molding.
【符号の説明】[Explanation of symbols]
1 直列連結体 11 歯部 12 円弧状の継鉄部 13 連結部 14 V字状切り欠き 15 帯状鋼板 16 分割片 2 積層鉄心 21 歯部 21a 歯部先端面 25 積層鋼板留め金 3 樹脂モールド 31 取付部 32 巻きブッシュインサート 1 series connection 11 teeth 12 Arc-shaped yoke 13 Connection 14 V-shaped notch 15 Strip steel plate 16 pieces 2 laminated iron core 21 teeth 21a Tooth surface 25 Laminated Steel Plate Clasp 3 resin mold 31 Mounting part 32 roll bush insert
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) H02K 3/34 H02K 3/34 B 15/12 15/12 E Fターム(参考) 3B155 AA10 BB04 GC09 HB10 MA02 5H002 AA06 AA07 AB04 AC07 5H604 AA08 BB01 BB14 BB17 CC01 CC05 CC16 DA14 DA17 DB03 PB03 5H615 AA01 BB01 BB07 BB14 BB17 PP01 PP06 PP13 QQ19 SS03 SS05 SS11 SS13 SS44 TT04 TT32 TT37 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) H02K 3/34 H02K 3/34 B 15/12 15/12 EF term (reference) 3B155 AA10 BB04 GC09 HB10 MA02 5H002 AA06 AA07 AB04 AC07 5H604 AA08 BB01 BB14 BB17 CC01 CC05 CC16 DA14 DA17 DB03 PB03 5H615 AA01 BB01 BB07 BB14 BB17 PP01 PP06 PP13 QQ19 SS03 SS05 SS11 SS13 SS44 TT04 TT32 TT37

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】洗濯機用モータの製造方法であって、 帯状の鋼板を打ち抜くことにより、円弧状の継鉄部と歯
    部よりなる鉄心構成片が切り欠きと該切り欠きの底に位
    置する連結部とを介して直列に連続する形態の直列連結
    体を形成しつつ積層する打ち抜き・積層工程と、 前記打ち抜き・積層工程の後に、前記直列連結体につい
    て、前記切り欠きを閉じるように環状または円弧状に湾
    曲させる湾曲工程と、 前記湾曲工程を経て固定子の鉄心を得た後、該鉄心を金
    型に収納してインサート成形を施すことにより、該鉄心
    の表面が、回転子の外周面と対峙する面を除き、電気絶
    縁性の樹脂モールドにより被覆されるようにする樹脂モ
    ールド形成工程と、 前記鉄心の樹脂モールドが施された各歯部の周りに、コ
    イルを巻き付ける巻き線工程とを備えることを特徴とす
    る洗濯機用モータの製造方法。
    1. A method of manufacturing a motor for a washing machine, comprising punching a strip-shaped steel plate, wherein an iron-core component piece having an arc-shaped yoke portion and a tooth portion is located at a notch and a bottom of the notch. A punching / laminating step of stacking while forming a series connected body of a form continuous in series via a connecting portion, and, after the punching / laminating step, with respect to the series connected body, an annular shape to close the notch or A bending step of bending in an arc shape, and after obtaining the iron core of the stator through the bending step, the iron core is housed in a mold and subjected to insert molding, whereby the surface of the iron core is the outer peripheral surface of the rotor. A resin mold forming step for covering with an electrically insulating resin mold except for a surface facing each other, and a winding step for winding a coil around each tooth part on which the resin molding of the iron core is applied. Prepare A method for manufacturing a motor for a washing machine, comprising:
  2. 【請求項2】前記樹脂モールド形成工程において、前記
    固定子を洗濯機のフレーム構造に固定するための取付部
    が同時に形成されることを特徴とする請求項1記載の洗
    濯機用モータの製造方法。
    2. The method for manufacturing a washing machine motor according to claim 1, wherein in the resin mold forming step, a mounting portion for fixing the stator to a frame structure of the washing machine is formed at the same time. .
  3. 【請求項3】前記打ち抜き・積層工程において、複数列
    の前記直列連結体が形成され、一の前記直列連結体の歯
    部が、その隣の前記直列連結体の歯部の間に配置された
    状態に打ち抜きが行われることを特徴とする請求項1ま
    たは2記載の洗濯機用モータの製造方法。
    3. In the punching / laminating step, a plurality of rows of the series-connected body are formed, and one tooth portion of the series-connected body is arranged between the tooth portions of the adjacent series-connected body. The method for manufacturing a washing machine motor according to claim 1 or 2, wherein punching is performed in the state.
JP2001333366A 2001-10-30 2001-10-30 Manufacturing method for washing machine motor Pending JP2003143814A (en)

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Cited By (16)

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JP2005176597A (en) * 2003-12-10 2005-06-30 Lg Electron Inc Outer rotor motor for drum washing machine and its manufacturing process
EP1550758A2 (en) * 2003-12-30 2005-07-06 Lg Electronics Inc. Driving unit of top loading drum type washing machine
JP2007049860A (en) * 2005-08-12 2007-02-22 Sanyo Electric Co Ltd Motor for washing machine and washing machine equipped with that motor
JP2007536889A (en) * 2004-05-11 2007-12-13 ホガナス アクチボラゲット Electric machine and method for manufacturing an electric machine
JP2009089547A (en) * 2007-10-02 2009-04-23 Hitachi Appliances Inc Brushless motor
JP2009278814A (en) * 2008-05-16 2009-11-26 Fujitsu General Ltd Electric motor and method for manufacturing the same
JP2010141942A (en) * 2008-12-09 2010-06-24 Mitsubishi Electric Corp Laminate core, method for manufacturing the same, rotor, stator and core member sheet
JP2012085534A (en) * 2012-01-31 2012-04-26 Fujitsu General Ltd Method of manufacturing electric motor
CN102430637A (en) * 2010-09-29 2012-05-02 上海日港置信非晶体金属有限公司 Punching/shearing mould and method for steel ladle strip
CN104550413A (en) * 2014-12-26 2015-04-29 福建东帆电机有限公司 Sheet punching device
WO2015069062A1 (en) 2013-11-08 2015-05-14 삼성전자주식회사 Motor, manufacturing method thereof, and washing machine
KR20150053719A (en) 2013-11-08 2015-05-18 삼성전자주식회사 Motor, manufacturing method thereof and washing machine
CN105312425A (en) * 2015-10-22 2016-02-10 信质电机股份有限公司 Stator material strip integrated separation stamping die and method
JP2017501888A (en) * 2014-01-02 2017-01-19 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh Fine blanking device
WO2018025541A1 (en) * 2016-08-01 2018-02-08 株式会社三井ハイテック Apparatus for producing laminated core and method for producing laminated core
KR20190062335A (en) * 2019-05-14 2019-06-05 대영전기 주식회사 Punching processing mold for stator core and stator core manufactured thereby

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JP2005176597A (en) * 2003-12-10 2005-06-30 Lg Electron Inc Outer rotor motor for drum washing machine and its manufacturing process
EP1550758A2 (en) * 2003-12-30 2005-07-06 Lg Electronics Inc. Driving unit of top loading drum type washing machine
EP1550758A3 (en) * 2003-12-30 2014-05-14 LG Electronics, Inc. Driving unit of top loading drum type washing machine
US8110959B2 (en) 2004-05-11 2012-02-07 Höganäs Ab Method for producing an electrical machine with a body of soft magnetic material
JP2007536889A (en) * 2004-05-11 2007-12-13 ホガナス アクチボラゲット Electric machine and method for manufacturing an electric machine
JP4698327B2 (en) * 2005-08-12 2011-06-08 三洋電機株式会社 Washing machine motor and washing machine equipped with the motor
JP2007049860A (en) * 2005-08-12 2007-02-22 Sanyo Electric Co Ltd Motor for washing machine and washing machine equipped with that motor
JP2009089547A (en) * 2007-10-02 2009-04-23 Hitachi Appliances Inc Brushless motor
JP2009278814A (en) * 2008-05-16 2009-11-26 Fujitsu General Ltd Electric motor and method for manufacturing the same
US7986064B2 (en) 2008-05-16 2011-07-26 Fujitsu General Limited Electrical motor
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CN102430637A (en) * 2010-09-29 2012-05-02 上海日港置信非晶体金属有限公司 Punching/shearing mould and method for steel ladle strip
CN102430637B (en) * 2010-09-29 2015-03-04 上海日港置信非晶体金属有限公司 Punching/shearing mould and method for steel ladle strip
JP2012085534A (en) * 2012-01-31 2012-04-26 Fujitsu General Ltd Method of manufacturing electric motor
WO2015069062A1 (en) 2013-11-08 2015-05-14 삼성전자주식회사 Motor, manufacturing method thereof, and washing machine
KR20150053719A (en) 2013-11-08 2015-05-18 삼성전자주식회사 Motor, manufacturing method thereof and washing machine
JP2017501888A (en) * 2014-01-02 2017-01-19 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh Fine blanking device
CN104550413A (en) * 2014-12-26 2015-04-29 福建东帆电机有限公司 Sheet punching device
CN104550413B (en) * 2014-12-26 2017-02-22 福建东帆电机有限公司 Sheet punching device
CN105312425A (en) * 2015-10-22 2016-02-10 信质电机股份有限公司 Stator material strip integrated separation stamping die and method
WO2018025541A1 (en) * 2016-08-01 2018-02-08 株式会社三井ハイテック Apparatus for producing laminated core and method for producing laminated core
CN109562432A (en) * 2016-08-01 2019-04-02 株式会社三井高科技 The manufacturing device of laminated iron core and the manufacturing method of laminated iron core
KR20190062335A (en) * 2019-05-14 2019-06-05 대영전기 주식회사 Punching processing mold for stator core and stator core manufactured thereby
KR102230213B1 (en) 2019-05-14 2021-03-19 대영전기 주식회사 Punching processing mold for stator core and stator core manufactured thereby

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