JP4011810B2 - Surface mount component mounting machine - Google Patents

Surface mount component mounting machine Download PDF

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Publication number
JP4011810B2
JP4011810B2 JP37638799A JP37638799A JP4011810B2 JP 4011810 B2 JP4011810 B2 JP 4011810B2 JP 37638799 A JP37638799 A JP 37638799A JP 37638799 A JP37638799 A JP 37638799A JP 4011810 B2 JP4011810 B2 JP 4011810B2
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Japan
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mounting
elevating
nozzle
nozzles
attached
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JP37638799A
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JP2001168589A (en
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三晴 増井
晃 岸田
朝海 加藤
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Yamaha Motor Co Ltd
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Yamaha Motor Co Ltd
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Description

【0001】
【産業上の利用分野】
本発明は、電子部品の組立や装着を行う業界等において用いる表面実装部品装着機に関する
【0002】
【従来の技術】
プリント基板等へチップ部品やIC部品等の電子部品の組立や装着を行う業界等において、この電子部品は、表面実装部品装着機における装着ヘッドが、電子部品の供給部と装着部とを往復して昇降し、その吸着と離脱を繰り返すことで所定の装着が行われる。
【0003】
従来の装置にあっては、図9(a)に示すように、横ガイド80に沿って移動するヘッド支持部材81にサーボモータ82を取り付け、このサーボモータ82の出力軸83にボールネジ84を連結してあって、該ボールネジ84に装着ヘッド85を昇降自在に螺着してある。
【0004】
更に、この装着ヘッド85はその装着効率等を向上させるために、図9(b)に示すように、6連のように複数個設けられることが一般的で、各々の装着ヘッド85の取付軸86には、電子部品bを吸着保持するノズル87を取り付けてあって、該吸着ノズル87は、取付軸86を中心として所定の回転角が得られるようにベルト88を介してそれぞれ個別のモータ89を接続してあるもので、これらの各部材82,84,85,89等はヘッド支持部材81に取り付けた個々のハウジング90にまとめて配設されている。
【0005】
そして、電子部品bのプリント基板cへの装着に際しては、まず、装着ヘッド85が電子部品bの供給部に移動し、該供給部の電子部品bを装着ヘッド85のノズル87が受け取って装着部へ移動し、該装着部のプリント基板cへ装着するもので、この装着前に、ノズル87吸着保持された電子部品bの吸着姿勢を、CCDカメラ等のセンサー91により検出して必要に応じて個々に補正を行う。
【0006】
この検出工程は、図9(b)に示すように、表面実装部品装着機の適所に設けたセンサー91上を、ヘッド支持部材81が走行することで、あるいは、ノズル87に吸着保持された電子部品bの下側をセンサー91が走行することで、一度に装着ヘッド85,85,85…の保持する全部の電子部品bに対してその吸着姿勢の検出が行われる。
【0007】
しかしながら、複数個の装着ヘッド85の昇降駆動源およびノズル87の回転駆動源として、それぞれサーボモータ82およびモータ89を個々のハウジング90内に組み込むので、これらを支持するために、該モータ82,89の外形寸法以上のハウジング90の大きさが必要となり、該ハウジング90を並べ設けたとき、必然的に、図9(b)に示すように、隣り合う各ノズル87,87の回転軸中心のピッチL1が大きくなる。
【0008】
したがって、6連のように多くの装着ヘッド85,85,85…を並設したときは、その一側端のノズル87と他側端のノズル87との距離L2が比較的大きくなる。
【0009】
そのため、前記したセンサー91による吸着保持された電子部品bの検出にあって、装着ヘッド85全体あるいはセンサー91の移動距離が長くなって、その分、電子部品bの検出時間が延長されて、該電子部品bの装着時間が遅れるので、タクト時間の短縮化が図れない。
【0010】
また、サーボモータ82とモータ89をハウジング90内に組み込んでいるため、モータのみを整備したい場合でも、装着ヘッド全体をハウジングごと取り外さなければならず、その作業に多くの時間がかかると共に、メンテナンス性が悪い。
【0011】
更に、限られたスペースの中にノズル交換ステージを設置するため、該ステージに載置・保持されたノズル87のピッチは、該ノズルの外形により極限まで縮小され、該ノズルが多数本載置・保持されることになるのでヘッドピッチL1と合わせることができず、そのため、ノズル交換動作が単独になり、同時交換ができなかった。
【0012】
また、ノズル87に吸着保持された電子部品bを全て撮像し終わるまでは、装着ヘッド85はたとえ装着点に到着しても装着動作に移行できない、つまり、回転軸の補正移動ができないということで装着スピードに限界があった。
等の様々な問題点を有するものであった。
【0013】
【発明が解決しようとする課題】
本発明は、前記した問題点を解決するためになされたもので、複数個の装着ヘッドを有する表面実装部品装着機にあって、それぞれの装着ヘッドに取り付けた保持部材の昇降駆動源を、連係部材を介して接続し、該それぞれの保持部材の回転軸中心の間隔を、それぞれの昇降駆動源の軸中心の間隔よりも狭くさせ、装着ヘッドに取り付けられた装着ヘッド間ピッチと、ノズル交換ステージに載置・保持されたノズル間のピッチとを同一にして、複数個のノズルを同時交換できるようにし、更に、複数個取り付けられた回転駆動源の各々と隣り合う複数個の装着ヘッドとをグルーピングすることにより、複数個の装着ヘッドのノズルの一部が未だ電子部品を検出中でも他の装着ヘッドのノズルに吸着保持された電子部品を装着できるようになり、そのため、電子部品の装着時間を大幅に短縮させ、且つ、製造コストの低減とメンテナンス性の向上を図ることができる表面実装部品装着機および表面実装部品装着方法を提供することを目的としている。
【0014】
【課題を解決するための手段】
前記した目的を達成するための本発明の手段は、機体へ取り付けて進退手段により前後方向へ任意に移動する進退体と、この進退体に取り付けて移動手段により左右方向へ任意に移動する可動体と、この可動体へ昇降手段により昇降自在に係合させ、前記進退手段と前記移動手段とにより電子部品の供給部と装着部とを任意に移動する複数個の装着ヘッドと、これら装着ヘッドにそれぞれ着脱自在に取り付けられたノズルを縦軸方向を中心として回転させる回転手段と、前記ノズルに吸着された電子部品を検出する検出手段とを備えさせた表面実装部品装着機にあって、前記装着ヘッドは、前記可動体に固着した支持体と、この支持体へ取り付けて昇降および回転自在となる昇降部材と、該昇降部材の下側に設け、電子部品を吸着するノズルとからなり、前記ノズルが平面視において一直線状に並ぶように前記可動体に設けられ、前記昇降手段は、前記可動体へ取り付けた昇降駆動源と、前記昇降部材と共に昇降する作動部材に連係させた昇降位置決め部材とからなり、前記回転手段は、前記支持体に取り付けられた回転駆動源と、この回転駆動源の回転を互いに隣り合う複数のノズルに伝達する連係部材とを備え、前記回転駆動源と、前記複数のノズルと、前記連係部材とを一つのグループとして形成し、この複数のグループを前記ノズルの並ぶ方向に平面視において重なることなく並べて配置し、複数の回転駆動源を、前記前後方向から見てノズルが設けられている範囲の中間に配設した表面実装部品装着機の構成にある。
【0016】
更に、前記複数個の昇降駆動源はモータによって構成され、これらのモータは、出力軸の方向が前記前後方向を指向する状態で千鳥状に配置され、前記昇降位置決め部材は、前記昇降駆動源の出力軸に設けられたピニオンと、前記作動部材の上部に前記ピニオンと噛み合うように設けられたラックとを備えている。
更にまた、前記複数個の回転駆動源は同一平面状に配置する。
【0021】
【実施例】
次に、本発明に関する表面実装部品装着機および表面実装部品装着方法の実施の一例を図面に基づいて説明する。
【0022】
図1〜図2においてAは、チップ部品やIC部品等の電子部品bを、その供給部mより受け取って装着部nへ移送し、プリント基板c上の所定位置へ装着する表面実装部品装着機である。
【0023】
なお、前記した表面実装部品装着機Aには、機体1においてその一側若しくは両側にパーツフィーダ等により順次搬送されて待機する電子部品bの供給部mが、また、機体1内において移送部材(図示せず)によりプリント基板cが搬入出される電子部品bの装着部nが設けられている。
【0024】
そして、その構成は、図1および図2に示すように、機体1へ取り付けて、進退手段2により前後方向(Y軸方向の任意平面)へ任意に移動する進退体3と、この進退体3に取り付けて移動手段4により左右方向(X軸方向の任意平面)へ任意に移動する可動体5と、この可動体5へ昇降手段6により装着ヘッド7を昇降自在に係合させてあると共に、この装着ヘッド7は、回転手段8により縦軸方向(Z軸方向)を中心として回転自在としてあるもので、それぞれの手段2および4,6,8は数値制御可能なサーボモータ等により高精度で作動される。
【0025】
なお、この装着ヘッド7は、電子部品bの上面を吸着する吸着パッド式や、その外周を把持するチャック式等が用いられるもので、本実施例においては吸着パット式について示すものであって、この装着ヘッド7の下端部に保持部材であるノズル9が取り付けられている。
【0026】
更に、この装着ヘッド7は、可動体5に固着した支持体10と、この支持体10へ取り付けて昇降および回転自在となる昇降部材11と、該昇降部材11の下側に設けた電子部品bの保持部材であるノズル9とからなるもので、各保持部材(ノズル)9の回転軸中心は、図4に示すように、直線p−p上に位置するように設けられる。
【0027】
また、前記した昇降手段6は、図2に示すように可動体5へ昇降駆動源(サーボモータ)12を千鳥状に取り付けてあって、その出力軸13に設けたピニオン14と、昇降部材11と共に昇降する作動部材15の上部に設けたラック16とが噛み合っており、前記ラック16とピニオン14とで昇降位置決め部材を構成している。
【0028】
これにより、サーボモータ12を作動すると、ピニオン14の回転に伴って、該ピニオン14と噛み合ったラック16が昇降し、該ラック16と一体の作動部材15が支持体10に設けた縦ガイド17に沿って昇降するので、作動部材15に取り付けた昇降部材11が、即ち、保持部材であるノズル9が縦軸(Z軸)方向に対して数値制御された昇降運動を行う。
【0029】
もちろん、上記のラック16やピニオン14の代わりの連係部材としてベルトやプーリーを利用した機構のものも考えられる。
【0030】
この昇降手段6の構成により、複数の装着ヘッド7を可動体5へ並設したときは、これら装着ヘッド7の昇降部材11に取り付けられたそれぞれの保持部材(ノズル)9において、図3〜図4に示すように、該隣り合うそれぞれの保持部材(ノズル)9の回転軸中心の間隔eは、昇降駆動源(サーボモータ)12の軸中心の間隔fよりも大幅に狭く並設することができる。
【0031】
また、前記したそれぞれの保持部材(ノズル)9に接続させた回転手段8は、支持体10に同一平面状に二個取り付けられた回転駆動源(サーボモータ)18により連係部材となる回転プーリー(タイミングプーリー)19、アイドラプーリー20およびベルト(タイミングベルト)21等を介して保持部材(ノズル)9を連動作動させる。
【0032】
そして、その構成は、図2および図4に示すように、隣り合う四個の装着ヘッド7をそれぞれ二つにグルーピングし、その一つのグルーピングされた四個の装着ヘッド7の各ノズル9の回転に対して前記二個の回転駆動源(サーボモータ)18のうちの一個を連係させる。
【0033】
つまり、一つのグルーピングされた四個の装着ヘッド7の各ノズル9と、一個の回転駆動源(サーボモータ)18との関係は、昇降部材11の適所へ、該昇降部材11の軸方向の移動は自在に、かつ、回転方向に対して一体的に回転させる回転プーリー(タイミングプーリー)19をそれぞれ取り付けて、これら回転プーリー19にアイドラプーリー20を介してベルト(タイミングベルト)21を一連的に掛け渡してあるもので、サーボモータ18の出力軸22にベルト23を介して取り付けた駆動プーリー24の回転により駆動する。
【0034】
更に、図3と図5に示すように、装着ヘッド7に取り付けられたノズル9のピッチeを均一にし、該ピッチと、前記ノズル9を載置・保持するノズル交換ステージ27のノズル載置・保持部28のピッチeとを同一に形成することにより、ノズル9の同時交換が可能となる。
【0035】
更にまた、図1に示すように、供給部mに取り付けたフィーダ30のピッチeも同一にすることにより、電子部品bの同時吸着も可能となる。
【0036】
また、前記のように昇降駆動源(サーボモータ)12を千鳥状に配置することにより、装着ヘッド部をコンパクトにでき、しかも装着ヘッド7の個数を増やすことができ、該装着ヘッド7に取り付けられるノズル9の取付ピッチを従来機の半分以下に、つまり15mm以下のピッチに構成できるようになる。
【0037】
そして、図5に示すように、ノズル9を載置・保持するノズル交換ステージ27のノズル載置・保持部28の個数を、複数個の装着ヘッド7の全てに取り付けられるノズル9の個数の倍数とすることによりノズルの段取り性が向上する。
【0038】
また、ノズル9は、図6に示すように、装着ヘッド7に着脱自在に取り付けられるシャフト部9aと、このシャフト部9aの下側部に設けて、ノズル交換ステージ27のノズル載置・保持部28へ安定的に載置・保持する円盤状のフランジ9bと、該フランジ9bの下側に設けた電子部品bの吸着部9cとよりなるもので、シャフト部9aから吸着部9cまで縦軸方向において一連の吸気孔9dが設けられている。なお、ノズル交換ステージ27のノズル載置・保持部28は、一プリント基板cへの電子部品装着に必要なノズル9の数以上が設けられている。そして、このノズル9におけるフランジ9bの上面には、そのノズル9の種類等のデータが格納された固有標識29が設けられている。
【0039】
なお、図1および図2において25は、装着ヘッド7のノズル9に吸着保持された電子部品bの吸着状態を認識する検出手段で、CCD等のカメラセンサーやレーザ発振器等の慣用な手段が用いられる。
【0040】
この検出手段25からの画像情報等の信号は、コンピュータ等からなる制御手段26に送られ所定の演算等がなされて、プリント基板cへの電子部品bの装着に際して、正確に補正された信号が前記した各手段2、4,6および8へ伝達される。
【0041】
機体1の適所に固定状態に取り付けられた検出手段25の上を、装着ヘッド7を支承している可動体5が直線走行したり、機体1または可動体5の適所に設けた操作手段(図示せず)により装着ヘッド7が保持する電子部品bの下方を検出手段25が直線移動したりすることで、複数の装着ヘッド7に支持されているノズル9が保持する電子部品bに対して一連的な連続検出が行われる。
【0042】
したがって、本発明に係る表面実装部品装着機Aおよび表面実装部品装着方法の一実施例の作用は以下の通りである。
【0043】
基板c上には、電子部品bがそれぞれ所定個数を適所に装着されるもので、この作業にあっては、これら設定値や動作順序等のデータが、あらかじめ制御手段26へ記憶されている。
【0044】
そして、その電子部品bの装着は、制御手段26による各制御によって、進退手段2および移動手段4、昇降手段6、回転手段8を操作して、電子部品bの供給部mへ複数個からなる装着ヘッド7を移動させて、それぞれの昇降部材11に設けたノズル9がそれぞれに該電子部品bを受け取り吸着保持する。
【0045】
このとき、複数個からなる装着ヘッド7を移動させる昇降手段6が、それぞれのサーボモータ12が個別に作動して、該回転をそれぞれラック16とピニオン14により作動部材15へ伝達するもので、該作動部材15が縦ガイド17に沿って昇降し、該作動部材15に一体的である昇降部材11に取り付けたノズル9が効果と上昇の運動を行う。
【0046】
それぞれの装着ヘッド7は、可動体5に対して個々の支持体10により支持されているものであるが、昇降手段6における千鳥状に配置されたサーボモータ12は、この支持体10とは離隔した位置の可動体5に取り付けられて、ノズル9を先端部に取り付けた昇降部材11がラック16とピニオン14及び作動部材15を介して連係されているため、この支持体10はサーボモータ12の外形寸法に影響されることなく、すなわち、図4に示すように、サーボモータ12,12間のピッチfに関係なくできるだけ狭寸法に製作でき、その結果、隣り合う複数個の装着ヘッド7,7,7・・・における吸着ノズル9,9,9・・・の回転軸中心の各ピッチeを可及的に狭くすることができた。
【0047】
そのため、図3に示すように、各吸着ノズル9に吸着保持された各電子部品b間の全長距離Lが、従来の装置のものと比べて短くなったので、検出手段25または各装着ヘッド7が直線的に横移動して、該電子部品bの姿勢等を連続的に検出するにあたって、その移動距離が短くなり、該検出時間を、すなわち、電子部品bの検出画像の取り込みを短時間に行うことができて、それに相応して、姿勢補正処理が速くなり、プリント基板cへの電子部品bの装着タクト時間を大幅に短縮することができた。
【0048】
また、サーボモータ12の点検・修理等にあっても、支持体10とは別の部位に取り付けられているため、該サーボモータ12のみを装置Aから取り外すことができてメンテナンス性も大幅に向上された。
【0049】
前記した検出手段25による検出結果に基づいて制御手段16を経て、吸着保持された電子部品bの吸着姿勢に対して所定の補正がなされるものであるが、このうち、電子部品bの傾き補正は、吸着ノズル9を縦軸(Z軸)中心に所定の回転角に旋回させることにより行う。
【0050】
この場合、各吸着ノズル9を支承した各昇降部材11に連係させた回転手段8が、一基のサーボモータ18と一本のベルト21による構成の採用により、隣り合う一グループの複数個のノズル9に対して共通の旋回作動を与えることができる。
【0051】
つまり図4に示すように、二グループの回転駆動源(サーボモータ)18と装着ヘッド7のノズル9の回転との関係になっており、各グループに属するノズルは互いに独立した回転を与えられることになっている。
【0052】
そして、図7〜図8に示すように、先ず装着ヘッド7が供給部mへ移動し、吸着予定の電子部品bを全て吸着する。その後、直ちにこれら装着ヘッド7は供給部mから装着部nへ移動し、その移動途中において装着ヘッド7のノズル9に吸着保持された電子部品bの位置検出・補正が行われ、装着ヘッド7が装着部nに到着すると、直ちに、既に位置検出・補正済みの一グループの電子部品bが装着され、同時に、他グループの未だ位置検出・補正が行われていない電子部品bに対してその吸着・保持状態を検出手段25により検出し、この検出値に基づいて補正が行われる。つまり、装着部nにおいて位置検出・補正と装着とが同時に行われることになり、装着ヘッド部の動作のロスタイムがなくなり、装着タクト時間の短縮を図ることができた。
【0053】
【発明の効果】
前述したように本発明の表面実装部品装着機および表面実装部品装着方法は、装着ヘッドの昇降に際して、その昇降手段を、支持体へ取り付けて前記昇降部材に設けた作動部材を係合させた昇降位置決め部材と、前記可動体に取り付けて前記昇降位置決め部材に連係部材を介して連係させた昇降駆動源を千鳥状に配置させる構成を用いることにより、昇降駆動源の大きさに影響されることなく装着ヘッドの取り付けピッチを狭くすることができるので、装着ヘッドに保持された電子部品の検出手段による検出距離が短くなって、プリント基板への電子部品の装着の時間効率が大幅に向上して、その高速化が達成でき、短時間に大量の装着処理が行える。
【0054】
昇降駆動源や回転駆動源は、支持体とは別の部位に設けられているため、これら昇降駆動源および回転駆動源の点検保守等にあって、支持体を可動体から取り外す作業がなくなり、メンテナンス性が大幅に向上する。
【0055】
回転手段は、複数個の回転駆動源によりそれぞれグルーピングされた保持部材(ノズル)を連続作動させることにより、装着部において位置検出・補正と装着とが同時に行われるようになり、電子部品の装着作動のロスタイムがなくなり、装着タクト時間の短縮化を図ることができる。
【図面の簡単な説明】
【図1】本発明に関する電子部品装着方法を採用した表面実装部品装着機の一実施例の概略を示す平面図である。
【図2】図1における装着ヘッド部の要部を示す拡大側面図である。
【図3】図1における装着ヘッド部の要部を示す拡大正面図である。
【図4】図2における装着ヘッド部の要部を示す平面図である。
【図5】図1におけるノズル交換ステージの拡大平面図である。
【図6】図1における表面実装部品装着機に使用する一例のノズルを示す斜視図である。
【図7】装着ヘッドが供給部へ移動して電子部品を吸着し次に装着部へ移動して電子部品を吸着するまでの流れ図である。
【図8】装着部において位置検出・補正と装着とが同時に行われる状態を示す説明図である。
【図9】従来の装着ヘッドの昇降機構の概略を示すもので、(a)は側面図、(b)は正面図である。
【符号の説明】
A 表面実装部品装着機
b 電子部品
1 機体
2 進退手段
3 進退体
4 移動手段
5 可動体
6 昇降手段
7 装着ヘッド
8 回転手段
9 保持手段(ノズル)
10 支持体
11 昇降部材
12 昇降駆動源(サーボモータ)
13 出力軸
14 ピニオン
15 作動部材
16 ラック
17 縦ガイド
18 回転駆動源(サーボモータ)
19 回転プーリー
20 アイドラプーリー
21 タイミングベルト
22 出力軸
23 ベルト
24 駆動プーリー
25 検出手段
26 制御手段
27 ノズル交換ステージ
28 ノズル載置・保持部
29 ノズルの種類を示す固有標識
30 フィーダ
[0001]
[Industrial application fields]
The present invention relates to a surface mount component mounting machine used in the industry for assembling and mounting electronic components.
[0002]
[Prior art]
In the industry that assembles and mounts electronic components such as chip components and IC components on printed circuit boards, etc., this electronic component has a mounting head in a surface mounting component mounting machine that reciprocates between the electronic component supply unit and the mounting unit. Ascending and descending, and repeating the adsorption and detachment, predetermined attachment is performed.
[0003]
In the conventional apparatus, as shown in FIG. 9A , a servo motor 82 is attached to a head support member 81 that moves along a lateral guide 80, and a ball screw 84 is connected to an output shaft 83 of the servo motor 82. Therefore, the mounting head 85 is screwed to the ball screw 84 so as to be movable up and down.
[0004]
Further, in order to improve the mounting efficiency and the like, the mounting head 85 is generally provided in a plurality of six as shown in FIG. 9B, and the mounting shaft of each mounting head 85 is provided. A nozzle 87 for sucking and holding the electronic component b is attached to 86, and the suction nozzle 87 is provided with an individual motor 89 via a belt 88 so as to obtain a predetermined rotation angle about the attachment shaft 86. These members 82, 84, 85, 89 and the like are collectively arranged in individual housings 90 attached to the head support member 81.
[0005]
When the electronic component b is mounted on the printed circuit board c, first, the mounting head 85 moves to the electronic component b supply unit, and the electronic component b of the supply unit is received by the nozzle 87 of the mounting head 85 to receive the mounting unit. Is mounted on the printed circuit board c of the mounting portion, and before this mounting, the suction posture of the electronic component b sucked and held by the nozzle 87 is detected by a sensor 91 such as a CCD camera or the like. To make individual corrections.
[0006]
As shown in FIG. 9B, this detection step is performed by the head support member 81 traveling on the sensor 91 provided at an appropriate position of the surface mount component mounting machine, or by the electrons held by the nozzle 87 by suction. When the sensor 91 travels below the component b, the suction posture is detected for all the electronic components b held by the mounting heads 85, 85, 85.
[0007]
However, since the servo motor 82 and the motor 89 are incorporated in the individual housings 90 as the raising / lowering drive source of the plurality of mounting heads 85 and the rotation drive source of the nozzle 87, respectively, the motors 82, 89 are supported to support them. When the housings 90 are arranged side by side, the pitches of the rotation axis centers of the adjacent nozzles 87 and 87 are inevitably as shown in FIG. 9B . L1 increases.
[0008]
Therefore, when many mounting heads 85, 85, 85... Are arranged side by side, such as six, the distance L2 between the nozzle 87 on one side end and the nozzle 87 on the other side end becomes relatively large.
[0009]
Therefore, in the detection of the electronic component b attracted and held by the sensor 91 described above, the movement distance of the entire mounting head 85 or the sensor 91 is increased, and accordingly, the detection time of the electronic component b is extended. Since the mounting time of the electronic component b is delayed, the tact time cannot be shortened.
[0010]
Further, since the servo motor 82 and the motor 89 are incorporated in the housing 90, even if only the motor is desired to be serviced, the entire mounting head must be removed together with the housing, which takes a lot of time and maintenance. Is bad.
[0011]
Further, since the nozzle replacement stage is installed in a limited space, the pitch of the nozzles 87 placed and held on the stage is reduced to the limit by the outer shape of the nozzle, and a large number of nozzles are placed on the stage. Since it is held, it cannot be matched with the head pitch L1, so that the nozzle replacement operation becomes independent and simultaneous replacement cannot be performed.
[0012]
In addition, until all the electronic components b attracted and held by the nozzle 87 have been imaged, the mounting head 85 cannot shift to the mounting operation even if it arrives at the mounting point, that is, the rotational movement of the rotating shaft cannot be performed. There was a limit to the mounting speed.
Etc. have various problems.
[0013]
[Problems to be solved by the invention]
The present invention has been made to solve the above-described problems. In the surface mounting component mounting machine having a plurality of mounting heads, the lifting drive source of the holding member attached to each mounting head is linked. The distance between the rotation axis centers of the respective holding members is made narrower than the distance between the axis centers of the respective lifting drive sources, the pitch between the mounting heads attached to the mounting head, and the nozzle replacement stage. The plurality of nozzles can be replaced at the same time with the same pitch between the nozzles placed and held on the plurality of rotation drive sources, and a plurality of mounting heads adjacent to each other. By grouping, even if some of the nozzles of multiple mounting heads are still detecting electronic components, it is possible to mount electronic components that are sucked and held by nozzles of other mounting heads. Therefore, mounting time of the electronic component greatly shortened, and has an object to provide a surface mount component placement machines and a surface mount component mounting method capable of improving the reduction and maintenance of the manufacturing cost.
[0014]
[Means for Solving the Problems]
The means of the present invention for achieving the above-described object includes an advancing / retracting body which is attached to the airframe and arbitrarily moves in the front / rear direction by the advancing / retreating means, and a movable body which is attached to the advancing / retreating body and arbitrarily moves in the left / right direction by the moving means. A plurality of mounting heads which are engaged with the movable body by a lifting / lowering means so as to freely move up and down, and the electronic parts supply section and the mounting section are arbitrarily moved by the advance / retreat means and the moving means, and the mounting heads A surface mounting component mounting machine comprising: a rotating unit that rotates a nozzle that is detachably mounted around a longitudinal axis direction; and a detecting unit that detects an electronic component adsorbed by the nozzle. The head includes a support fixed to the movable body, an elevating member that is attached to the support and can be moved up and down and rotated, and a nozzle that is provided below the elevating member and sucks an electronic component Made, the nozzles are provided in the movable member so as to be arranged in a straight line in a plan view, said lifting means includes a lifting drive source attached to the movable body, was linked to the actuating member to lift with the lifting member The rotation means includes a rotation drive source attached to the support and a linkage member that transmits the rotation of the rotation drive source to a plurality of nozzles adjacent to each other. The plurality of nozzles and the linking member are formed as one group, and the plurality of groups are arranged side by side without overlapping in a plan view in the direction in which the nozzles are arranged. The surface mount component mounting machine is arranged in the middle of the range where the nozzle is provided when viewed from the direction .
[0016]
Further, the plurality of lifting drive sources are constituted by motors, and these motors are arranged in a staggered manner with the direction of the output shaft directed in the front-rear direction, and the lifting positioning member is a member of the lifting drive source. A pinion provided on the output shaft and a rack provided on the upper portion of the operating member so as to mesh with the pinion are provided.
Furthermore, the plurality of rotational drive sources are arranged on the same plane.
[0021]
【Example】
Next, an example of the implementation of the surface mount component mounting machine and the surface mount component mounting method according to the present invention will be described with reference to the drawings.
[0022]
1-2, A is a surface mount component mounting machine that receives an electronic component b such as a chip component or an IC component from its supply unit m, transfers it to the mounting unit n, and mounts it on a predetermined position on the printed circuit board c. It is.
[0023]
In the surface mount component mounting machine A described above, the supply part m of the electronic component b that is sequentially transported by a parts feeder or the like to the one side or both sides in the machine body 1 and waits is also provided in the machine body 1 as a transfer member ( The mounting part n of the electronic component b in which the printed circuit board c is carried in / out is provided.
[0024]
As shown in FIGS. 1 and 2, the configuration is such that the advancing / retracting body 3 is attached to the airframe 1 and arbitrarily moved in the front-rear direction (any plane in the Y-axis direction) by the advancing / retreating means 2, and the advancing / retracting body 3. And a movable body 5 that is arbitrarily moved in the left-right direction (arbitrary plane in the X-axis direction) by the moving means 4, and a mounting head 7 is engaged with the movable body 5 by an elevating means 6 so as to be movable up and down. The mounting head 7 is rotatable about a longitudinal axis direction (Z-axis direction) by a rotating means 8, and each means 2, 4, 6, 8 is highly accurate by a numerically controllable servo motor or the like. Actuated.
[0025]
The mounting head 7 uses a suction pad type that sucks the upper surface of the electronic component b, a chuck type that grips the outer periphery thereof, etc., and in this embodiment, shows a suction pad type, A nozzle 9 as a holding member is attached to the lower end portion of the mounting head 7.
[0026]
Further, the mounting head 7 includes a support 10 fixed to the movable body 5, an elevating member 11 that is attached to the support 10 and can be moved up and down, and an electronic component b provided below the elevating member 11. As shown in FIG. 4, the center of the rotation axis of each holding member (nozzle) 9 is provided so as to be positioned on a straight line pp.
[0027]
Further, as shown in FIG. 2, the elevating means 6 has elevating drive sources (servo motors) 12 attached to the movable body 5 in a zigzag manner, a pinion 14 provided on the output shaft 13, and the elevating member 11. At the same time, the rack 16 provided on the upper part of the operating member 15 that moves up and down meshes, and the rack 16 and the pinion 14 constitute a lifting positioning member.
[0028]
Thus, when the servo motor 12 is operated, the rack 16 meshed with the pinion 14 is moved up and down with the rotation of the pinion 14, and the operation member 15 integrated with the rack 16 is moved to the vertical guide 17 provided on the support 10. Therefore, the lifting / lowering member 11 attached to the operating member 15, that is, the nozzle 9 serving as the holding member performs a numerically controlled lifting / lowering motion with respect to the vertical axis (Z-axis) direction.
[0029]
Of course, a mechanism using a belt or a pulley as a linkage member instead of the rack 16 or the pinion 14 may be considered.
[0030]
When the plurality of mounting heads 7 are arranged in parallel with the movable body 5 by the configuration of the lifting means 6, in each holding member (nozzle) 9 attached to the lifting member 11 of these mounting heads 7, FIG. 3 to FIG. As shown in FIG. 4, the interval e between the rotation shaft centers of the adjacent holding members (nozzles) 9 may be arranged substantially in parallel with the interval f between the axis centers of the lifting drive source (servo motor) 12. it can.
[0031]
Further, the rotating means 8 connected to each of the holding members (nozzles) 9 is a rotating pulley (servo motor) 18 that is attached to the support 10 by two rotation driving sources (servo motors) 18 that are linked to each other. The holding member (nozzle) 9 is operated in an interlocked manner via a timing pulley) 19, an idler pulley 20, a belt (timing belt) 21, and the like.
[0032]
2 and 4, the four adjacent mounting heads 7 are grouped in two, and the rotation of each nozzle 9 of the four grouped mounting heads 7 is performed. , One of the two rotational drive sources (servo motors) 18 is linked.
[0033]
That is, the relationship between each nozzle 9 of four grouped mounting heads 7 and one rotational drive source (servo motor) 18 is that the lifting member 11 is moved in the axial direction to an appropriate position of the lifting member 11. A rotation pulley (timing pulley) 19 that rotates freely and integrally with respect to the rotation direction is attached, and a belt (timing belt) 21 is continuously hung on the rotation pulley 19 via an idler pulley 20. It is driven by the rotation of a drive pulley 24 attached to the output shaft 22 of the servo motor 18 via a belt 23.
[0034]
Further, as shown in FIGS. 3 and 5, the pitch e of the nozzles 9 attached to the mounting head 7 is made uniform, and this pitch and the nozzle placement / replacement stage 27 nozzle placement / replacement nozzle placement / holding nozzle 9. By forming the holding portion 28 to have the same pitch e, the nozzles 9 can be replaced simultaneously.
[0035]
Furthermore, as shown in FIG. 1, the electronic component b can be simultaneously picked up by making the pitch e of the feeder 30 attached to the supply unit m the same.
[0036]
Further, by arranging the lifting drive sources (servo motors) 12 in a staggered manner as described above, the mounting head portion can be made compact, and the number of mounting heads 7 can be increased and attached to the mounting head 7. The mounting pitch of the nozzles 9 can be configured to be less than half that of the conventional machine, that is, 15 mm or less.
[0037]
As shown in FIG. 5, the number of nozzle mounting / holding portions 28 of the nozzle replacement stage 27 for mounting / holding the nozzle 9 is a multiple of the number of nozzles 9 attached to all of the plurality of mounting heads 7. By doing so, the setup of the nozzle is improved.
[0038]
Further, as shown in FIG. 6, the nozzle 9 is provided in a shaft portion 9 a that is detachably attached to the mounting head 7, and a nozzle placement / holding portion of the nozzle replacement stage 27 provided at a lower portion of the shaft portion 9 a. 28 is composed of a disk-like flange 9b that is stably placed and held on 28, and a suction part 9c of an electronic component b provided on the lower side of the flange 9b. The vertical direction from the shaft part 9a to the suction part 9c A series of intake holes 9d are provided. Note that the nozzle placement / holding section 28 of the nozzle replacement stage 27 is provided with more than the number of nozzles 9 necessary for mounting electronic components on one printed circuit board c. A unique mark 29 storing data such as the type of the nozzle 9 is provided on the upper surface of the flange 9b of the nozzle 9.
[0039]
In FIG. 1 and FIG. 2, reference numeral 25 denotes a detection means for recognizing the suction state of the electronic component b sucked and held by the nozzle 9 of the mounting head 7, and a conventional means such as a camera sensor such as a CCD or a laser oscillator is used. It is done.
[0040]
A signal such as image information from the detection means 25 is sent to a control means 26 formed of a computer or the like and subjected to a predetermined calculation or the like. When the electronic component b is mounted on the printed circuit board c, an accurately corrected signal is obtained. It is transmitted to each means 2, 4, 6 and 8 described above.
[0041]
The movable body 5 that supports the mounting head 7 travels linearly on the detection means 25 that is fixedly attached to the appropriate position of the machine body 1, or the operation means provided in the appropriate position of the machine body 1 or the movable body 5 (see FIG. The detection means 25 linearly moves below the electronic component b held by the mounting head 7 by a not-shown), so that a series of the electronic components b held by the nozzles 9 supported by the plurality of mounting heads 7 can be obtained. Continuous detection is performed.
[0042]
Therefore, the operation of the embodiment of the surface mounting component mounting machine A and the surface mounting component mounting method according to the present invention is as follows.
[0043]
A predetermined number of electronic components b are mounted at appropriate positions on the substrate c. In this work, data such as setting values and operation sequences are stored in the control means 26 in advance.
[0044]
The electronic component b is mounted in a plurality of ways to the supply part m of the electronic component b by operating the advance / retreat means 2, the moving means 4, the elevating means 6, and the rotating means 8 by each control by the control means 26. The mounting head 7 is moved, and the nozzles 9 provided on the elevating members 11 receive and hold the electronic component b by suction.
[0045]
At this time, the lifting / lowering means 6 for moving the plurality of mounting heads 7 is such that each servo motor 12 is individually operated and the rotation is transmitted to the operating member 15 by the rack 16 and the pinion 14, respectively. The actuating member 15 moves up and down along the vertical guide 17, and the nozzle 9 attached to the elevating member 11 that is integral with the actuating member 15 performs an effect and ascending motion.
[0046]
Each mounting head 7 is supported by an individual support 10 with respect to the movable body 5, but the servo motors 12 arranged in a staggered manner in the elevating means 6 are separated from the support 10. Since the elevating member 11 attached to the movable body 5 at the position and the nozzle 9 attached to the tip is linked via the rack 16, the pinion 14, and the operating member 15, the support 10 is used for the servo motor 12. As shown in FIG. 4, it can be manufactured as narrow as possible regardless of the pitch f between the servomotors 12 and 12, and as a result, a plurality of adjacent mounting heads 7 and 7 can be manufactured. , 7..., And the pitch e of the center of the rotation axis of the suction nozzles 9, 9, 9.
[0047]
Therefore, as shown in FIG. 3, since the total distance L between the electronic components b sucked and held by the suction nozzles 9 is shorter than that of the conventional apparatus, the detection means 25 or the mounting heads 7 Is moved laterally linearly to continuously detect the posture or the like of the electronic component b, the movement distance is shortened, and the detection time, that is, the detection image of the electronic component b is captured in a short time. Accordingly, the posture correction processing is accelerated accordingly, and the mounting tact time of the electronic component b on the printed circuit board c can be greatly shortened.
[0048]
Even when the servo motor 12 is inspected / repaired, etc., since it is attached to a part different from the support 10, only the servo motor 12 can be removed from the device A, and the maintainability is greatly improved. It was done.
[0049]
A predetermined correction is made to the suction posture of the electronic component b held by suction through the control means 16 based on the detection result by the detection means 25 described above, and among these, the inclination correction of the electronic component b is corrected. Is performed by turning the suction nozzle 9 around a vertical axis (Z axis) at a predetermined rotation angle.
[0050]
In this case, the rotation means 8 linked to each lifting / lowering member 11 that supports each suction nozzle 9 is composed of one servo motor 18 and one belt 21, thereby adopting a plurality of adjacent groups of nozzles. 9 can be provided with a common turning operation.
[0051]
That is, as shown in FIG. 4, there is a relationship between two groups of rotational drive sources (servo motors) 18 and the rotation of the nozzles 9 of the mounting head 7, and the nozzles belonging to each group are given independent rotations. It has become.
[0052]
Then, as shown in FIGS. 7 to 8, the mounting head 7 first moves to the supply unit m and sucks all the electronic components b to be sucked. Thereafter, the mounting head 7 immediately moves from the supply unit m to the mounting unit n, and the position detection and correction of the electronic component b sucked and held by the nozzle 9 of the mounting head 7 is performed during the movement, so that the mounting head 7 As soon as it arrives at the mounting part n, a group of electronic components b that have already been subjected to position detection / correction are mounted, and at the same time, the electronic components b of other groups that have not yet been subjected to position detection / correction are attracted / removed. The holding state is detected by the detecting means 25, and correction is performed based on the detected value. That is, the position detection / correction and the mounting are simultaneously performed in the mounting portion n, and the loss time of the operation of the mounting head portion is eliminated, and the mounting tact time can be shortened.
[0053]
【The invention's effect】
As described above, in the surface mounting component mounting machine and the surface mounting component mounting method of the present invention, when the mounting head is lifted, the lifting means is attached to the support and the lifting member is engaged with the operating member provided on the lifting member. By using a configuration in which a positioning member and a lifting drive source attached to the movable body and linked to the lifting positioning member via a linkage member are arranged in a staggered manner, the size of the lifting drive source is not affected. Since the mounting pitch of the mounting head can be narrowed, the detection distance by the detection means of the electronic component held by the mounting head is shortened, and the time efficiency of mounting the electronic component on the printed circuit board is greatly improved. The increase in speed can be achieved, and a large amount of mounting processing can be performed in a short time.
[0054]
Since the elevating drive source and the rotational drive source are provided in a part different from the support body, there is no work for removing the support body from the movable body in the inspection and maintenance of the elevating drive source and the rotational drive source, Maintenance is greatly improved.
[0055]
The rotating means continuously operates holding members (nozzles) grouped by a plurality of rotational driving sources, so that position detection / correction and mounting are performed simultaneously in the mounting portion, and mounting of electronic components is performed. This eliminates the loss time and shortens the mounting tact time.
[Brief description of the drawings]
FIG. 1 is a plan view showing an outline of an embodiment of a surface mount component mounting machine employing an electronic component mounting method according to the present invention.
FIG. 2 is an enlarged side view showing a main part of the mounting head part in FIG. 1;
FIG. 3 is an enlarged front view showing a main part of the mounting head part in FIG. 1;
4 is a plan view showing the main part of the mounting head part in FIG. 2. FIG.
FIG. 5 is an enlarged plan view of the nozzle replacement stage in FIG. 1;
6 is a perspective view showing an example of a nozzle used in the surface mount component mounting machine in FIG. 1. FIG.
FIG. 7 is a flowchart from when the mounting head moves to the supply unit to pick up an electronic component and then to the mounting unit to pick up the electronic component.
FIG. 8 is an explanatory diagram showing a state where position detection / correction and mounting are simultaneously performed in the mounting unit;
9A and 9B show an outline of a conventional lifting mechanism for a mounting head, where FIG. 9A is a side view and FIG. 9B is a front view.
[Explanation of symbols]
A surface mount component mounting machine b electronic component 1 machine body 2 advance / retreat means 3 advance / retreat body 4 moving means 5 movable body 6 elevating means 7 mounting head 8 rotating means 9 holding means (nozzle)
10 Support 11 Lifting member 12 Lifting drive source (servo motor)
13 Output shaft 14 Pinion 15 Actuating member 16 Rack 17 Vertical guide 18 Rotation drive source (servo motor)
DESCRIPTION OF SYMBOLS 19 Rotating pulley 20 Idler pulley 21 Timing belt 22 Output shaft 23 Belt 24 Drive pulley 25 Detection means 26 Control means 27 Nozzle exchange stage 28 Nozzle mounting / holding part 29 Unique mark 30 indicating nozzle type Feeder

Claims (3)

機体へ取り付けて進退手段により前後方向へ任意に移動する進退体と、この進退体に取り付けて移動手段により左右方向へ任意に移動する可動体と、この可動体へ昇降手段により昇降自在に係合させ、前記進退手段と前記移動手段とにより電子部品の供給部と装着部とを任意に移動する複数個の装着ヘッドと、これら装着ヘッドにそれぞれ着脱自在に取り付けられたノズルを縦軸方向を中心として回転させる回転手段と、前記ノズルに吸着された電子部品を検出する検出手段とを備えさせた表面実装部品装着機にあって、
前記装着ヘッドは、前記可動体に固着した支持体と、この支持体へ取り付けて昇降および回転自在となる昇降部材と、該昇降部材の下側に設け、電子部品を吸着するノズルとからなり、前記ノズルが平面視において一直線状に並ぶように前記可動体に設けられ、
前記昇降手段は、前記可動体へ取り付けた昇降駆動源と、前記昇降部材と共に昇降する作動部材に連係させた昇降位置決め部材とからなり、
前記回転手段は、前記支持体に取り付けられた回転駆動源と、この回転駆動源の回転を互いに隣り合う複数のノズルに伝達する連係部材とを備え、
前記回転駆動源と、前記複数のノズルと、前記連係部材とを一つのグループとして形成し、この複数のグループを前記ノズルの並ぶ方向に平面視において重なることなく並べて配置し、
複数の回転駆動源を、前記前後方向から見てノズルが設けられている範囲の中間に配設したことを特徴とする表面実装部品装着機。
An advancing / retracting body that is attached to the machine body and arbitrarily moves in the front / rear direction by the advancing / retreating means, a movable body that is attached to the advancing / retreating body and that is arbitrarily moved in the left / right direction by the moving means, and is engaged with the movable body by the elevating means A plurality of mounting heads for arbitrarily moving the electronic component supply unit and the mounting unit by the advancing / retreating unit and the moving unit, and nozzles detachably mounted on the mounting heads, respectively, about the vertical axis direction. A surface mounting component mounting machine provided with a rotating means for rotating as a detecting means for detecting an electronic component adsorbed to the nozzle,
The mounting head includes a support fixed to the movable body, an elevating member that is attached to the support and can be moved up and down and rotated, and a nozzle that is provided below the elevating member and sucks an electronic component. The nozzle is provided on the movable body so as to be aligned in a straight line in plan view,
The elevating means comprises an elevating drive source attached to the movable body, and an elevating positioning member linked to an operating member elevating together with the elevating member,
The rotation means includes a rotation drive source attached to the support, and a linkage member that transmits the rotation of the rotation drive source to a plurality of adjacent nozzles.
The rotation drive source, the plurality of nozzles, and the linkage member are formed as one group, and the plurality of groups are arranged side by side without overlapping in a plan view in the direction in which the nozzles are arranged,
A surface mount component mounting machine , wherein a plurality of rotational drive sources are arranged in the middle of a range where nozzles are provided when viewed from the front-rear direction .
前記複数個の昇降駆動源はモータによって構成され、
これらのモータは、出力軸の方向が前記前後方向を指向する状態で千鳥状に配置され、
前記昇降位置決め部材は、前記昇降駆動源の出力軸に設けられたピニオンと、前記作動部材の上部に前記ピニオンと噛み合うように設けられたラックとを備えていることを特徴とする請求項1記載の表面実装部品装着機。
The plurality of lifting drive sources are constituted by motors,
These motors are arranged in a staggered manner with the direction of the output shaft oriented in the front-rear direction ,
The elevating positioning member, said lifting a pinion provided on the driving source of the output shaft, according to claim 1, characterized in that it comprises a rack arranged to engage with the pinion on the upper part of the actuating member Surface mount component mounting machine.
前記複数個の回転駆動源は同一平面状に配置することを特徴とする請求項1または2記載の表面実装部品装着機。 3. The surface mount component mounting machine according to claim 1, wherein the plurality of rotational drive sources are arranged on the same plane.
JP37638799A 1999-12-07 1999-12-07 Surface mount component mounting machine Expired - Fee Related JP4011810B2 (en)

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