JP2004071683A - Soldering apparatus - Google Patents

Soldering apparatus Download PDF

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Publication number
JP2004071683A
JP2004071683A JP2002225854A JP2002225854A JP2004071683A JP 2004071683 A JP2004071683 A JP 2004071683A JP 2002225854 A JP2002225854 A JP 2002225854A JP 2002225854 A JP2002225854 A JP 2002225854A JP 2004071683 A JP2004071683 A JP 2004071683A
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Japan
Prior art keywords
mounting
solder
circuit board
soldering
gate
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JP2002225854A
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Japanese (ja)
Inventor
Masahiro Kuwabara
桑原 正浩
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AMTEX CORP
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AMTEX CORP
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Publication date
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Priority to JP2002225854A priority Critical patent/JP2004071683A/en
Publication of JP2004071683A publication Critical patent/JP2004071683A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To obstruct the bridging between a plurality of mounting legs in an electric component and a plurality of mounting sections in a circuit board due to solder. <P>SOLUTION: In the drawing of the mounting leg of the electric component 54 and the mounting section of the circuit board 52 from the liquid level of the solder in a hot-water port 3, even if the mounting legs and sections positioned at an upper side are pulled out of the liquid level of the solder in the hot-water port 3 as a mounting rest 17 of an inclination mechanism 15 inclines from a horizontal state, solder in a fused state adheres to the mounting legs and mounting sections that are pulled out of the liquid level of the fused solder in the hot-water port 3 in advance and are positioned at the upper side. Therefore, the solder is cut so that it is not bridged by pulling near solder in fused state adhering to the mounting legs and sections that are dipped into the liquid level of the fused solder in the hot-water port 3 and are positioned at a lower side since the mounting legs, and sections positioned at the lower side are dipped into the liquid level of the solder in the hot-water port 3. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、回路基板の複数の貫通孔に電気部品の金属からなる複数の取付足を個別に挿入した半田付対象部品において、電気部品における複数の取付足と複数の貫通孔周りにおける回路基板の板面に設けられた金属製の取付部とを半田で結合することで、電気部品の回路基板への挿入実装を完成させる半田付装置に関する。
【0002】
【従来の技術】
電気部品の回路基板への挿入実装を完成させる半田付装置は周知である。
【0003】
【発明が解決しようとする課題】
しかしながら、前記従来の半田付装置は、図10および図11に示す半田付対象部品51における回路基板52の複数の貫通孔53に挿入された電気部品54の金属製からなる複数のリード(端子)のような取付足55と当該取付足55の挿入された複数の貫通孔53周りにおける回路基板52の板面に設けられた金属製のランドと呼ばれる箔状の取付部56とを半田槽の湯口における溶融された半田の液面に対し垂直方向で挿入したり引き抜いたりする構造である。このため、図12に示すように、複数の取付足55と複数の取付部56とが湯口3の溶融された半田の液面Aから上方に垂直に引き抜かれるのに伴い、溶融された半田が湯口3から上方に移動する取付足55および取付部56に引き連れられ、当該半田の引き連れが発生すると、複数の取付足55と複数の取付部56とが半田で橋絡(ブリッジ)されることがあるという問題点があった。
【0004】
そこで、本発明は電気部品における複数の取付足と回路基板における複数の取付部との半田による橋絡を阻止することができる半田付装置を提供するものである。
【0005】
【課題を解決するための手段】
本発明にあっては、槽内で溶融された半田の液面を槽上面の湯口に浮上させるとともに湯口から槽内に沈降させる半田槽と、湯口の挿入可能な上下方向に貫通する逃孔を有する昇降台を昇降する昇降機構と、半田付対象部品の半田付面を露出させる開口を有する搭載台を斜めの半田切姿勢と水平な半田付姿勢とに姿勢変更する傾斜機構と、搭載台に半田付対象部品を受け渡したり搭載台から半田付対象部品を受け取ったりする搬送機構とを備えたことによって、電気部品における複数の取付足と回路基板における複数の取付部とが湯口の溶融された半田の液面から引き抜かれる場合、傾斜機構における搭載台が水平から斜めになるに伴い、搭載台の斜めとなる上側に位置する取付足および取付部が湯口の溶融された半田の液面から引き抜かれても、搭載台の斜めとなる下側に位置する取付足および取付部が湯口の溶融された半田の液面に浸されている形態となるので、湯口の溶融された半田の液面から先に引き抜かれた上側に位置する取付足および取付部に付着した溶融状態の半田が湯口の溶融された半田の液面に浸されている下側に位置する取付足および取付部に付着した溶融状態の半田に引き寄せられる。よって、上側に位置する取付足および取付部に付着した溶融状態の半田が下側に位置する取付足および取付部に付着した溶融状態の半田と橋絡することがないように切断された後に表面張力で半球形となって固化して取付足と取付部とを固定的に結合することができる。
【0006】
【発明の実施の形態】
図1から図9は一実施形態であって、図1は半田付装置を分解した外観を示し、図2から図9は半田付装置の動作を示す。図1を参照し、半田付装置について説明する。半田付装置は土台としての装置本体1に半田槽2、昇降機構5、傾斜機構15および搬送機構35を備える。装置本体1は複数の骨格部材を建物の軸組構造のように組み合わせた枠構造になっている。半田槽2は装置本体1の内部空間下部に配置されるように装置本体1に固定的に取り付けられており、槽内に設けられた図外の撹拌翼の回転によって槽内で溶融された半田の液面を槽上面の湯口3に浮上させるとともに湯口3から槽内に沈降させる噴流式である。具体的には、撹拌翼が図外のモーターのような撹拌駆動源で高速で回転されると、溶融された半田が槽内で湯口3に向かう勢いの強い流れを発生し、溶融された半田の液面が湯口3に浮上する。撹拌翼が低速に回転されると、槽内における溶融された半田の流れの勢いが弱くなり、溶融された半田の液面が湯口3から槽内に沈降する。
【0007】
昇降機構5は半田槽2の上方に配置されるように装置本体1に設けられたエアシリンダーのような昇降駆動源6を備える。昇降駆動源6におけるピストンロッドのような昇降出力体7には昇降台8が固定的に取り付けられる。昇降台8は内側に湯口3の挿入可能な上下方向に貫通する逃孔9を有する額縁状になっている。昇降台8が昇降駆動源6による昇降出力体7の動作でガイド機構10を介して半田槽2の湯口3に対して垂直方向に昇降する。ガイド機構10は実際には昇降台8の四隅に対して設けられていて湯口3に対する昇降台8の平行な昇降を適切に維持する形態となっているが、図1では図の明確さを表現することから昇降出力体7の近くに図示してある。そして、昇降台8が上昇すると、逃孔9が湯口3よりも上方に逃げた後、昇降台8が上昇限度位置に停止する。上昇限度位置から昇降台8が下降すると、逃孔9が湯口3の周りを囲むように湯口3を挿入させた後、昇降台8が下降限度位置に停止する。逃孔9は少なくとも湯口3を非接触に挿入し得る大きさであればよいが、本実施形態では搬送機構35の半田付対象部品51を支持するチャックアーム45を逃げる大きさである。
【0008】
傾斜機構15は昇降台8の上に固定的に取り付けられた傾斜駆動源としてのステップモーター(ステッピングモーター)16と、ステップモーター16の回転で斜めの半田切姿勢と水平な半田付姿勢とに姿勢変更される搭載台17とを備える。搭載台17は内側に半田付対象部品51の半田付面(電気部品54の取付足55と回路基板52の取付部56)を露出させる開口18を有する額縁状になっている。開口18は少なくとも半田付対象部品51の半田付面を露出させる大きさであればよいが、本実施形態では半田付対象部品51における回路基板52を位置決め搭載するとともに搬送機構35のチャックアーム45を逃げる大きさである。具体的には、開口18は回路基板52よりも大きな左右幅(横幅)と回路基板52よりも小さな前後幅(奥行)とを有する方形である。開口18の前後縁部には半田付対象部品51における回路基板52の前後縁部を収容する凹状の収納部19が形成される。収納部19は回路基板52の前後縁における端面を向き合って受け止める縦面と回路基板52の前後縁における下面を向き合って受け止める横面とを備える。搭載台17の前部(チャックアーム45の搬送方向と直交する方向の前側に位置する部分)は昇降台8に軸受機構20で回転可能に取り付けられる。搭載台17の後部は傾斜駆動源の出力体であるモーター軸21にカム機構22で連結される。
【0009】
カム機構22はステップモーター16のモーター軸21と一緒に回転するようにモーター軸21に連結されたカム軸23を備える。カム軸23は搭載台17に回転可能に支持される。カム軸23にはカムアーム24がカム軸23と一緒に回転するように取り付けられる。カムアーム24の先端部にはローラーの格好をしたカム25が回転可能に取り付けられる。カム25の周面上には搭載台17の前部から前方に連接された棒状のカムフォロア26が接触する。カム軸23周りにおける昇降台8にはカム軸23の回転位置を検出する複数の非接触形の位置検出器27;28が設けられる。一方の位置検出器27がカムアーム24を検出した信号を図外のモーター制御部に出力すると、モーター制御部が搭載台17の水平な半田付姿勢と判断してステップモーター16を回転停止する。
【0010】
他方の位置検出器28がカム軸23に固定的に設けられた被検出体29を検出した信号をモーター制御部に出力すると、モーター制御部が搭載台17の斜めな半田切姿勢と判断してステップモーター16を回転停止した後に所定停止時間の経過後にステップモーター16を再び回転する。所定停止時間は半田の切れおよび凝固が完成する時間としてモーター制御部に設定される。具体的には、ステップモーター16によりカム機構22のカム軸23が一方の位置検出器27によるカムアーム24の検出位置と他方の位置検出器28による被検出体29の検出位置とに間欠回転運動することで、搭載台17が軸受機構20を回転中心として水平な半田付姿勢と片屋根のような斜めの格好となる斜めの半田切姿勢とに姿勢変更される。
【0011】
搬送機構35は半田槽2、昇降台8および搭載台17よりも上方に位置するように装置本体1に組み付けられたエアシリンダーのような搬送駆動源36を備える。搬送駆動源36におけるピストンロッドのような搬送駆動体37にはチャック基部40が固定的に取り付けられる。チャック基部40が搬送駆動源36による搬送駆動体37の動作でカイド機構38を介して半田槽2の湯口3と平行な矢印X1で示す方向および逆方向となる横方向に直線的に往復移動する。カイド機構38のチャック基部40を貫通して両側に突出した端部は装置本体1に固定的に取り付けられる。チャック基部40にはチャック可動部41がチャック基部40に取り付けられたエアシリンダーのようなチャック昇降駆動源42で昇降し得るように組み付けられる。チャック可動部41にはエアシリンダーのようなアーム開閉駆動源43が固定的に取り付けられる。
【0012】
アーム開閉駆動源43のシリンダーロッドのようなアーム開閉出力体44には左右一対のチャックアーム45が固定的に取り付けられる。チャックアーム45はアーム開閉出力体44の左右横方向へのアーム開閉駆動源43に対する伸縮動作で図外のガイド機構を介して半田付対象部品51の回路基板52を支持したり解放したりするように動く。チャックアーム45における先端部の互いに向き合う内面に半田付対象部品51における回路基板52の左右縁部を嵌め込む横溝46を備える。そして、左右一対のチャックアーム45が互いに近づく方向に移動すると、回路基板52の左右縁部が横溝46に嵌め込まれて、チャックアーム45が回路基板52を支持する。その状態において、左右一対のチャックアーム45が互いに離れる方向に移動すると、回路基板52の左右縁部が横溝46から離脱されてチャックアーム45が回路基板52の支持を解放する。
【0013】
搭載台17の軸受機構20よりも前部には電気部品支持機構61が設けられる。電気部品支持機構61は搭載台17の前部に軸受機構62で回転可能に取り付けられた機構アーム63を備える。機構アーム63は搭載台17の軸受機構20と干渉しないように開口18の方向に延長した形態であって、搭載台17に設けられた回転駆動源としてのエアシリンダー64で搭載台17に対して上方で近づいたり離れたりするように例えば90度程度の回転運動範囲で回転する。具体的には、機構アーム63に一緒に回転するように固定された軸受機構62の軸から径方向一側に突出したレバーがエアシリンダー64のピストンロッドに連結されており、エアシリンダー64のピストンロッドが伸縮することで、機構アーム63が軸受機構62の軸とレバーとを介して軸受機構62を回転中心として上記90度程度の回転運動範囲で回転する。機構アーム63が図示のように搭載台17から真上に起立した退避位置に停止することよって、電気部品支持機構61が搬送機構35のチャックアーム45や半田付対象部品51と干渉しないようになっている。機構アーム63の先端部には開閉駆動源としてのエアシリンダー65で開閉される左右一対のホルダーアーム66を備える。ホルダーアーム66が互いに近づくように閉じることによって電気部品54を支持し、ホルダーアーム66が互いに離れるように開くことによって電気部品54の支持を解放する。
【0014】
図2から図8を参照し、本実施形態の動作について説明する。図2に示すように、機構アーム63が搭載台17から真上に起立した位置に停止している状態において、昇降台8が半田槽2の湯口3よりも上方に離れた上昇限度位置に停止し、搭載台17が昇降台8に最も近づいた水平な半田付姿勢に停止し、回路基板52の複数の貫通孔53に電気部品54の金属からなる複数の取付足55を個別に挿入した半田付対象部品51がチャックアーム45で支持されて前工程から搬送機構35で昇降台8の真上に図1の矢印X1で示す方向に搬入されてきて停止すると、昇降台8の真上から搬送機構35で矢印X1方向に搬出される。搬送機構35におけるチャックアーム45が水平な半田付姿勢の搭載台17に向けて下降し、回路基板52が搭載台17の収納部19の真上に非接触に最接近した位置で、チャックアーム45の下降が停止する。
【0015】
チャックアーム45で支持された半田付対象部品51は図9に示すように電気部品54の金属製からなる複数のリード(端子)のような取付足55が回路基板52の複数の貫通孔53に個別に挿入され、最も外側の取付足55から突出した図10に示す突起57が回路基板52の貫通孔53周りの上面に接触し、電気部品54のボディが回路基板52から所定寸法だけ離れて浮上支持された形態である。次に、チャックアーム45が互いに離れる方向に移動することによって、チャックアーム45から解放された半田付対象部品51が水平に落下し、回路基板52の前後縁部が搭載台17の収納部19に収容される。この回路基板52の収納部19への収容によって、回路基板52が搭載台17に位置決め搭載される。この搭載台17の開口18から下方に向いて露出した半田付対象部品51の半田付面(電気部品54の取付足55と回路基板52の取付部56)は半田槽2の湯口3と平行となる。
【0016】
その後、図3に示すように、エアシリンダー64によって機構アーム63が搭載台17に近づく方向に回転する。この場合、ホルダーアーム66は開いている。そして、機構アーム63が左右のチャックアーム45の間を通過しつつ搭載台17に近づく過程において、開放中のおける左右のホルダーアーム66の間に取り込まれた後、機構アーム63が図示のように搭載台17と平行となる矯正位置に停止すると、エアシリンダー65によってホルダーアーム66が閉じて電気部品54を両側から挟む格好で支持する。このホルダーアーム66による支持によって、図2の取付足55が回路基板52の貫通孔53に挿入されたまま、電気部品54が回路基板52の板面と垂直状に起立した自立姿勢に矯正される。このように回路基板52に対する挿入姿勢が矯正された電気部品54における取付足55の突出した底面は回路基板52の板面と平行になっている。しかも、ホルダーアーム66を開閉する開閉駆動源としてエアシリンダー65が使用されているので、エアシリンダー65が電気部品54を支持する場合の衝撃がエアシリンダー65の内部の圧縮流体である空気で吸収され、ホルダーアーム66が電気部品54を適切に支持することができる。
【0017】
前記のように電気部品54が電気部品支持機構61で支持された後、図4に示すように、昇降台8が上記水平を維持するように半田槽2の上面に向けて水平に下降して下降限度位置に停止すると、湯口3を囲む周壁が昇降台8の逃口に下方から挿入されて搭載台17上の半田付対象部品51の半田付面と接触するかまたは非接触で最接近する。この非接触での最接近は図5に示す湯口3に浮上する溶融された半田の液面Aがその表面張力で漏出しない格好である。このように昇降台8が下降限度位置に停止した後、図9に示すように、半田槽2の湯口3に槽内で溶融された半田の液面Aが浮上してくる。そして、当該液面Aの浮上によって、液面Aを構成する溶融された半田が半田付対象部品51の半田付面における電気部品54の取付足55と回路基板52の取付部56を下方から内部に浸すように取り込む。この浸されによって、溶融された半田が電気部品54の取付足55と回路基板52の取付部56とに付着して取付足55と取付部56とを結合する。
【0018】
引続き、図6に示すように、前記浸されから所定時間の経過後に、傾斜機構15のステップモーター16が回転を開始すると、搭載台17が軸受機構20を回転中心として水平な半田付姿勢から斜めの半田切姿勢に姿勢変更される。そして、図1の他方の位置検出器28が被検出体29を検出すると、ステップモーター16の回転が停止し、搭載台17が斜めの半田切姿勢に維持される。このように搭載台17が水平な半田付姿勢から斜めの半田切姿勢に姿勢変更されて停止する過程において、電気部品54の取付足55と回路基板52の取付部56とが半田槽2の湯口3における溶融された半田から斜めに引き抜かれる。この複数の取付足55と複数の取付部56とが溶融された半田の液面Aから上方に斜めに引き抜かれるのに伴い、溶融された半田が湯口3から斜め上方に移動する取付足55および取付部56に斜めに引き連れられた後に、溶融された半田が取付足55および取付部56の側と湯口3の側とで複数の取付足55と複数の取付部56とが半田で橋絡することがないように切断される。この切断された取付足55および取付部56の側に付着して溶融された半田は図7に示すように表面張力で半球形となって固化して取付足55と取付部56とを固定的に結合する。上記切断された湯口3の側の溶融された半田は湯口3の溶融された半田に取り込まれる。
【0019】
その後、または、上記搭載台17の水平な半田付姿勢から斜めの半田切姿勢への姿勢変更開始後に、図8に示すように、昇降台8が下降限度位置から上昇して上昇限度位置に停止する。前記図3から図8までの工程において、図3以外では図示を省略したが、電気部品支持機構61による電気部品54の支持は継続している。それから、傾斜機構15のステップモーター16が回転を開始し、搭載台17が軸受機構20を回転中心として斜めの半田切姿勢から水平な半田付姿勢に姿勢変更され、上記ステップモーター16の回転が停止する。このステップモーター16の回転が停止した形態は図3と同じである。その後、ホルダーアーム66が開き、電気部品支持機構61による電気部品54の支持が解放され、機構アーム63が矯正位置から退避位置に回転して停止する一方、チャックアーム45が半田付対象部品51を解放した下降限度位置で互いに近づく方向に移動することによって、半田付対象部品51における回路基板52の左右縁部がチャックアーム45の横溝に取り込まれ、チャックアーム45が半田付けの完了した半田付対象部品51を支持した後に上昇して上昇限度位置に停止する。その後、チャックアーム45に支持された半田付けの完了した半田付対象部品51が搬送機構35で昇降台8の真上から次工程に矢印X1方向に搬出される。
【0020】
本実施形態によれば、半田切れについて考察すると、図9に示すように、電気部品54における複数の取付足55と回路基板52における複数の取付部56とを湯口3の溶融された半田の液面Aから引き抜く場合、傾斜機構15における搭載台17が水平から斜めになるに伴い、搭載台17の斜めとなる上側に位置する取付足55および取付部56が湯口3の溶融された半田の液面Aから引き抜かれても、搭載台17の斜めとなる下側に位置する取付足55および取付部56が湯口3の溶融された半田の液面Aに浸されている形態となる。このような形態によって、湯口3の溶融された半田の液面Aから先に引き抜かれた上側に位置する取付足55および取付部56に付着した溶融状態の半田が湯口3の溶融された半田の液面Aに浸されている下側に位置する取付足55および取付部56に付着した溶融状態の半田に引き寄せられる。このため、上側に位置する取付足55および取付部56に付着した溶融状態の半田が下側に位置する取付足55および取付部56に付着した溶融状態の半田と橋絡することがないように切断された後に表面張力で半球形となって固化して取付足55と取付部56とを固定的に結合する。
【0021】
また、電気部品54が回路基板52に半田付けされる開始から半田の凝固が完成するまで、電気部品支持機構61で電気部品54の姿勢を矯正した状態で支持しているので、電気部品54が回路基板52の板面と垂直状に起立した一様の自立姿勢で回路基板52に半田付けされ、品質信頼性を向上することができる。
【0022】
搬送機構35で前工程から搭載台17に供給される半田付対象部品51は当該前工程において半田付対象部品の半田付面への半田の付着が良好となるように加熱されていることから、回路基板52が反っていることがある。このようなことから、収納部19の深さを回路基板52の板厚よりも深く形成すれば、チャックアーム45から水平に落下する回路基板52の前後縁部が収納部19に適切に位置決めされつつ搭載することができる。収納部19に回路基板52を位置決めする場合、本実施形態のように収納部19の縦面と回路基板52の前後縁部の端面との接触する程度に近づいた向かい合わせで行うようにする代わりに、収納部19の縦面と回路基板52の前後縁部の端面との隙間を大きく形成し、収納部19の横面に図示していない複数の位置決め突起を設け、当該位置決め突起に回路基板52に上下方向に貫通形成されている図示していない複数の取付孔を上記回路基板52のチャックアーム45からの落下に伴い上方から個別に挿入することによって、複数の位置決め突起と複数の取付孔との嵌め合いで搭載台17に回路基板52を位置決め搭載することも可能である。
【0023】
この場合、搭載台17から収納部19を削除し、開口18周りの削除した収納部19に相当する搭載台17の上面に位置決め突起を設ければ、搭載台17が収納部19を設ける必要のない簡素な形態となる。位置決め突起の高さが回路基板52の板厚よりも高ければ、上記回路基板52に反りがあっても、位置決め突起と取付孔との嵌め合いが確保でき、回路基板52の位置決めが最良となる。位置決め突起の先端部が下方から上方に行くにしたがって徐々に細くなる錐形に形成されれば、位置決め突起と取付孔との出会いがしらの嵌め合いが確実となる。取付孔として位置決め突起との嵌め合いのための専用として回路基板52に形成してもよいが、製品として回路基板52を格納する容器に取り付ける場合の取付孔を利用すれば、位置合わせのために回路基板52の電気部品の実装面積を狭くすることもなくなる。
【図面の簡単な説明】
【図1】一実施形態の半田付装置を示す分解斜視図。
【図2】同実施形態の動作を示す模式図。
【図3】同実施形態の動作を示す模式図。
【図4】同実施形態の動作を示す模式図。
【図5】同実施形態の動作を示す模式図。
【図6】同実施形態の動作を示す模式図。
【図7】同実施形態の動作を示す模式図。
【図8】同実施形態の動作を示す模式図。
【図9】同実施形態の動作を示す模式図。
【図10】従来例を示す分解斜視図。
【図11】従来例を示す断面図。
【図12】従来の半田橋絡の発生を示す模式図。
【符号の説明】
1 装置本体
2 半田槽
5 昇降機構
15 傾斜機構
35 搬送機構
51 半田付対象部品
52 回路基板
53 貫通孔
54 電気部品
55 取付足
56 取付部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a soldering target component in which a plurality of mounting feet made of metal of an electric component are individually inserted into a plurality of through holes of a circuit board, wherein the plurality of mounting feet of the electric component and the circuit board around the plurality of through holes are provided. The present invention relates to a soldering device that completes insertion and mounting of an electric component on a circuit board by bonding a metal mounting portion provided on a plate surface with a solder.
[0002]
[Prior art]
2. Description of the Related Art Soldering apparatuses for completing insertion and mounting of electric components on a circuit board are well known.
[0003]
[Problems to be solved by the invention]
However, in the conventional soldering apparatus, a plurality of leads (terminals) made of metal of the electric component 54 inserted into the plurality of through holes 53 of the circuit board 52 of the component 51 to be soldered shown in FIGS. The mounting feet 55 such as described above and a foil-like mounting portion 56 called a metal land provided on the plate surface of the circuit board 52 around the plurality of through holes 53 into which the mounting feet 55 are inserted are connected to the gate of the solder bath. The structure is such that it is inserted and withdrawn in the direction perpendicular to the liquid surface of the molten solder in the above. For this reason, as shown in FIG. 12, as the plurality of mounting feet 55 and the plurality of mounting portions 56 are pulled out vertically upward from the liquid level A of the molten solder in the gate 3, the molten solder is removed. When the solder is drawn by the mounting feet 55 and the mounting portions 56 moving upward from the gate 3, the plurality of mounting feet 55 and the plurality of mounting portions 56 may be bridged by the solder. There was a problem.
[0004]
Accordingly, the present invention provides a soldering apparatus that can prevent a bridge between a plurality of mounting feet of an electric component and a plurality of mounting portions of a circuit board due to solder.
[0005]
[Means for Solving the Problems]
According to the present invention, a solder bath that raises the liquid level of the solder melted in the bath to a gate on the upper surface of the bath and sinks from the gate into the bath, and a through hole that penetrates in a vertical direction in which the gate can be inserted. A lifting mechanism that raises and lowers a lifting platform having a tilting mechanism that changes a mounting table having an opening that exposes a soldering surface of a component to be soldered to an oblique solder cutting position and a horizontal soldering position; By providing a transfer mechanism for transferring and receiving a soldering target component from a mounting table, a plurality of mounting feet of the electrical component and a plurality of mounting portions of the circuit board are melted at the gate of the solder. When the mounting table in the tilting mechanism is inclined from horizontal, the mounting feet and the mounting portions located on the upper side of the mounting table which are inclined are pulled out from the liquid level of the molten solder at the gate. Also, since the mounting foot and the mounting portion located on the lower side that is oblique to the mounting table are in the form of being immersed in the liquid level of the molten solder of the gate, first from the liquid level of the molten solder of the gate. The molten solder attached to the upper mounting foot and the mounting portion that has been pulled out is immersed in the liquid level of the molten solder in the gate, and the molten solder attached to the lower mounting foot and the mounting portion is Attracted to solder. Therefore, the surface after being cut so that the molten solder attached to the upper mounting foot and the mounting portion does not bridge with the molten solder attached to the lower mounting foot and the mounting portion. The attachment foot and the attachment portion can be fixedly connected by being hemispherical and solidified by the tension.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
1 to 9 show an embodiment. FIG. 1 shows the appearance of a disassembled soldering apparatus, and FIGS. 2 to 9 show the operation of the soldering apparatus. The soldering device will be described with reference to FIG. The soldering apparatus includes a soldering tank 2, an elevating mechanism 5, a tilting mechanism 15, and a transport mechanism 35 in an apparatus body 1 as a base. The apparatus main body 1 has a frame structure in which a plurality of frame members are combined like a frame structure of a building. The solder tank 2 is fixedly attached to the apparatus main body 1 so as to be disposed in a lower part of the internal space of the apparatus main body 1, and the solder melted in the tank by rotation of a stirring blade (not shown) provided in the tank. Is a jet flow type in which the liquid surface of the liquid is floated on the gate 3 on the upper surface of the tank and settles from the gate 3 into the tank. Specifically, when the stirring blade is rotated at a high speed by a stirring drive source such as a motor (not shown), the molten solder generates a strong flow toward the gate 3 in the bath, and the molten solder is rotated. Rises to the gate 3. When the stirring blade is rotated at a low speed, the flow of the flow of the molten solder in the bath becomes weak, and the liquid level of the molten solder sinks from the gate 3 into the bath.
[0007]
The elevating mechanism 5 includes an elevating drive source 6 such as an air cylinder provided on the apparatus main body 1 so as to be disposed above the solder tank 2. A lifting platform 8 is fixedly attached to a lifting output body 7 such as a piston rod in the lifting drive source 6. The elevating table 8 has a frame shape having an escape hole 9 penetrating in the up-down direction in which the gate 3 can be inserted. The elevating table 8 moves up and down in a direction perpendicular to the gate 3 of the solder tank 2 via the guide mechanism 10 by the operation of the elevating output unit 7 by the elevating drive source 6. Although the guide mechanism 10 is actually provided at the four corners of the elevator 8 to maintain the elevation of the elevator 8 parallel to the gate 3 properly, FIG. 1 illustrates the clarity of the figure. Therefore, it is shown near the elevating output body 7. When the elevator 8 rises, the escape hole 9 escapes above the gate 3, and then the elevator 8 stops at the upper limit position. When the elevator 8 descends from the elevation limit position, the gate 3 is inserted so that the escape hole 9 surrounds the gate 3, and then the elevator 8 stops at the lower limit position. The escape hole 9 may be at least large enough to allow the gate 3 to be inserted in a non-contact manner. In the present embodiment, the escape hole 9 is large enough to escape the chuck arm 45 of the transport mechanism 35 that supports the component 51 to be soldered.
[0008]
The tilting mechanism 15 has a stepping motor (stepping motor) 16 as a tilting drive source fixedly mounted on the lift 8, and a tilted soldering posture and a horizontal soldering posture by the rotation of the stepping motor 16. And a mounting table 17 to be changed. The mounting table 17 has a frame shape having an opening 18 on the inside to expose the soldering surface (the mounting foot 55 of the electric component 54 and the mounting portion 56 of the circuit board 52) of the soldering target component 51. The opening 18 may be at least a size that exposes the soldering surface of the component 51 to be soldered. In the present embodiment, the circuit board 52 in the component 51 to be soldered is positioned and mounted, and the chuck arm 45 of the transport mechanism 35 is mounted. It is the size to escape. Specifically, the opening 18 has a rectangular shape having a lateral width (width) larger than the circuit board 52 and a front-rear width (depth) smaller than the circuit board 52. At the front and rear edges of the opening 18 are formed concave housing portions 19 for housing the front and rear edges of the circuit board 52 of the component 51 to be soldered. The storage section 19 includes a vertical surface facing the front and rear edges of the circuit board 52 facing each other and a horizontal surface facing the lower surface of the front and rear edges of the circuit board 52 facing each other. The front portion of the mounting table 17 (the portion located on the front side in the direction orthogonal to the transport direction of the chuck arm 45) is rotatably attached to the lifting table 8 by the bearing mechanism 20. The rear part of the mounting table 17 is connected to a motor shaft 21 which is an output body of a tilt drive source by a cam mechanism 22.
[0009]
The cam mechanism 22 includes a cam shaft 23 connected to the motor shaft 21 so as to rotate together with the motor shaft 21 of the step motor 16. The cam shaft 23 is rotatably supported by the mounting table 17. A cam arm 24 is attached to the cam shaft 23 so as to rotate together with the cam shaft 23. A cam 25 in the form of a roller is rotatably attached to the tip of the cam arm 24. A rod-shaped cam follower 26 connected forward from the front of the mounting table 17 comes into contact with the peripheral surface of the cam 25. The lift 8 around the cam shaft 23 is provided with a plurality of non-contact position detectors 27 and 28 for detecting the rotational position of the cam shaft 23. When one of the position detectors 27 outputs a signal indicating detection of the cam arm 24 to a motor control unit (not shown), the motor control unit determines that the mounting table 17 is in a horizontal soldering posture and stops the stepping motor 16 from rotating.
[0010]
When the other position detector 28 outputs a signal indicating detection of the detection target 29 fixedly provided on the camshaft 23 to the motor control unit, the motor control unit determines that the mounting table 17 is in an oblique soldering posture. After a predetermined stop time elapses after the rotation of the stepping motor 16 is stopped, the stepping motor 16 is rotated again. The predetermined stop time is set in the motor control unit as a time when the cutting and solidification of the solder are completed. Specifically, the stepping motor 16 causes the cam shaft 23 of the cam mechanism 22 to intermittently rotate between the position where the cam arm 24 is detected by one position detector 27 and the position where the detection target 29 is detected by the other position detector 28. As a result, the mounting table 17 is changed to a horizontal soldering posture around the bearing mechanism 20 as a center of rotation and an oblique soldering posture such as a single-roof oblique appearance.
[0011]
The transport mechanism 35 includes a transport drive source 36 such as an air cylinder mounted on the apparatus main body 1 so as to be located above the solder tank 2, the elevating table 8 and the mounting table 17. A chuck base 40 is fixedly attached to a transport drive 37 such as a piston rod in the transport drive source 36. The chuck base 40 linearly reciprocates in the direction indicated by an arrow X1 parallel to the gate 3 of the solder tank 2 and in the opposite horizontal direction via the guide mechanism 38 by the operation of the transport driving body 37 by the transport driving source 36. . The ends of the guide mechanism 38 that penetrate the chuck base 40 and protrude to both sides are fixedly attached to the apparatus main body 1. The chuck movable portion 41 is assembled to the chuck base 40 so that it can be moved up and down by a chuck lifting drive source 42 such as an air cylinder attached to the chuck base 40. An arm opening / closing drive source 43 such as an air cylinder is fixedly attached to the chuck movable portion 41.
[0012]
A pair of left and right chuck arms 45 are fixedly attached to an arm opening / closing output body 44 such as a cylinder rod of the arm opening / closing drive source 43. The chuck arm 45 supports and releases the circuit board 52 of the component 51 to be soldered through a guide mechanism (not shown) by an expansion / contraction operation of the arm opening / closing output body 44 in the lateral direction of the arm opening / closing drive source 43. Move to On the opposing inner surfaces of the distal end portion of the chuck arm 45, there are provided lateral grooves 46 into which the left and right edges of the circuit board 52 of the component 51 to be soldered are fitted. When the pair of left and right chuck arms 45 move toward each other, the left and right edges of the circuit board 52 are fitted into the lateral grooves 46, and the chuck arms 45 support the circuit board 52. In this state, when the pair of left and right chuck arms 45 move away from each other, the left and right edges of the circuit board 52 are separated from the lateral grooves 46, and the chuck arm 45 releases the support of the circuit board 52.
[0013]
An electrical component support mechanism 61 is provided on the mounting table 17 in front of the bearing mechanism 20. The electric component support mechanism 61 includes a mechanism arm 63 rotatably attached to a front portion of the mounting table 17 by a bearing mechanism 62. The mechanism arm 63 is extended in the direction of the opening 18 so as not to interfere with the bearing mechanism 20 of the mounting table 17, and is mounted on the mounting table 17 by an air cylinder 64 provided as a rotation drive source provided on the mounting table 17. It rotates in a rotational movement range of, for example, about 90 degrees so as to approach or separate upward. Specifically, a lever protruding radially to one side from the axis of the bearing mechanism 62 fixed so as to rotate together with the mechanism arm 63 is connected to the piston rod of the air cylinder 64. When the rod expands and contracts, the mechanism arm 63 rotates about the bearing mechanism 62 as a rotation center in the above-described rotational movement range of about 90 degrees via the shaft and the lever of the bearing mechanism 62. By stopping the mechanism arm 63 at the retracted position standing upright from the mounting table 17 as shown in the figure, the electric component support mechanism 61 does not interfere with the chuck arm 45 of the transport mechanism 35 or the component 51 to be soldered. ing. A pair of left and right holder arms 66 that are opened and closed by an air cylinder 65 as an opening and closing drive source are provided at the distal end of the mechanism arm 63. The electrical components 54 are supported by the holder arms 66 closing closer together and the support of the electrical components 54 is released by opening the holder arms 66 away from each other.
[0014]
The operation of the present embodiment will be described with reference to FIGS. As shown in FIG. 2, in a state where the mechanism arm 63 is stopped at a position right above the mounting table 17, the lifting table 8 is stopped at a rising limit position away from the gate 3 of the solder tank 2. Then, the mounting table 17 is stopped at the horizontal soldering position closest to the lifting table 8, and the plurality of mounting feet 55 made of metal of the electric component 54 are individually inserted into the plurality of through holes 53 of the circuit board 52. When the attachment target component 51 is supported by the chuck arm 45 and is transported from the previous process to the position directly above the elevator 8 by the transport mechanism 35 in the direction indicated by the arrow X1 in FIG. 1 and stopped, it is transported from directly above the elevator 8. It is carried out in the direction of arrow X1 by the mechanism 35. The chuck arm 45 of the transport mechanism 35 is lowered toward the horizontal mounting table 17 in a soldering position, and the circuit board 52 is positioned directly above the storage section 19 of the mounting table 17 in a non-contact manner. Stops descending.
[0015]
The soldering target component 51 supported by the chuck arm 45 is provided with mounting feet 55 such as a plurality of leads (terminals) made of metal of an electric component 54 in a plurality of through holes 53 of the circuit board 52 as shown in FIG. The protrusion 57 shown in FIG. 10 which is individually inserted and protrudes from the outermost mounting foot 55 contacts the upper surface around the through hole 53 of the circuit board 52, and the body of the electric component 54 is separated from the circuit board 52 by a predetermined dimension. This is a form supported by floating. Next, as the chuck arms 45 move away from each other, the soldering target component 51 released from the chuck arms 45 falls horizontally, and the front and rear edges of the circuit board 52 are stored in the storage section 19 of the mounting table 17. Will be accommodated. The circuit board 52 is positioned and mounted on the mounting table 17 by the housing of the circuit board 52 in the housing portion 19. The soldering surfaces (the mounting feet 55 of the electric component 54 and the mounting portions 56 of the circuit board 52) of the component 51 to be soldered exposed downward from the opening 18 of the mounting table 17 are parallel to the gate 3 of the solder tank 2. Become.
[0016]
Thereafter, as shown in FIG. 3, the mechanism arm 63 is rotated by the air cylinder 64 in a direction approaching the mounting table 17. In this case, the holder arm 66 is open. Then, in the process in which the mechanism arm 63 approaches the mounting table 17 while passing between the left and right chuck arms 45, the mechanism arm 63 is taken in between the left and right holder arms 66 in the open state, and then the mechanism arm 63 is moved as illustrated. When stopped at the correction position parallel to the mounting table 17, the holder arm 66 is closed by the air cylinder 65, and the electric component 54 is supported in a manner of sandwiching it from both sides. With the support by the holder arm 66, the electric component 54 is corrected to a self-standing position that stands upright with respect to the plate surface of the circuit board 52 while the mounting feet 55 of FIG. 2 are inserted into the through holes 53 of the circuit board 52. . The protruding bottom surface of the mounting foot 55 of the electric component 54 whose insertion posture with respect to the circuit board 52 has been corrected is parallel to the plate surface of the circuit board 52. Moreover, since the air cylinder 65 is used as an opening / closing drive source for opening / closing the holder arm 66, the impact when the air cylinder 65 supports the electric component 54 is absorbed by the compressed fluid air inside the air cylinder 65. The holder arm 66 can appropriately support the electric component 54.
[0017]
After the electric component 54 is supported by the electric component support mechanism 61 as described above, as shown in FIG. 4, the lifting platform 8 is lowered horizontally toward the upper surface of the solder bath 2 so as to maintain the above-mentioned level. When stopped at the lower limit position, the peripheral wall surrounding the sprue 3 is inserted from below into the escape opening of the elevating platform 8 and comes into contact with the soldering surface of the component 51 to be soldered on the mounting platform 17 or comes closest without contact. . The closest approach without contact is such that the liquid surface A of the molten solder floating on the gate 3 shown in FIG. 5 does not leak due to its surface tension. After the lift 8 stops at the lower limit position in this way, as shown in FIG. 9, the liquid level A of the solder melted in the bath rises to the gate 3 of the solder bath 2. Then, due to the floating of the liquid surface A, the molten solder forming the liquid surface A causes the mounting foot 55 of the electric component 54 and the mounting portion 56 of the circuit board 52 on the soldering surface of the component 51 to be soldered to be inserted from below. Take in soaked in. Due to this immersion, the melted solder adheres to the mounting foot 55 of the electric component 54 and the mounting part 56 of the circuit board 52 to connect the mounting foot 55 and the mounting part 56.
[0018]
Subsequently, as shown in FIG. 6, when the stepping motor 16 of the tilting mechanism 15 starts rotating after a lapse of a predetermined time from the immersion, the mounting table 17 is inclined from the horizontal soldering posture with the bearing mechanism 20 as the center of rotation. The posture is changed to the soldering posture. When the other position detector 28 in FIG. 1 detects the detection target 29, the rotation of the step motor 16 is stopped, and the mounting table 17 is maintained in the oblique solder cutting posture. As described above, in the process in which the mounting table 17 is changed from the horizontal soldering position to the oblique solder cutting position and stopped, the mounting feet 55 of the electric component 54 and the mounting portion 56 of the circuit board 52 are connected to the gate of the solder bath 2. 3. Obliquely withdrawn from the molten solder in 3. As the plurality of mounting feet 55 and the plurality of mounting portions 56 are drawn obliquely upward from the liquid level A of the molten solder, the mounting feet 55 in which the molten solder moves obliquely upward from the gate 3 and After being obliquely drawn by the mounting portion 56, the molten solder bridges the plurality of mounting legs 55 and the plurality of mounting portions 56 with the solder between the mounting legs 55 and the side of the mounting portion 56 and the gate 3. Never be cut off. As shown in FIG. 7, the solder that has been melted by being attached to the cut mounting feet 55 and the mounting portions 56 becomes hemispherical due to surface tension and solidifies, thereby fixing the mounting feet 55 and the mounting portions 56. To join. The melted solder on the side of the cut gate 3 is taken into the melted solder of the gate 3.
[0019]
After that, or after starting to change the attitude of the mounting table 17 from the horizontal soldering attitude to the oblique solder cutting attitude, as shown in FIG. 8, the elevator 8 rises from the lower limit position and stops at the upper limit position. I do. In the steps from FIG. 3 to FIG. 8, the illustration of the components other than FIG. 3 is omitted, but the electrical component support mechanism 61 continues to support the electrical component 54. Then, the step motor 16 of the tilt mechanism 15 starts rotating, the mounting table 17 is changed from the oblique soldering attitude to the horizontal soldering attitude about the bearing mechanism 20 as the rotation center, and the rotation of the step motor 16 stops. I do. The form in which the rotation of the step motor 16 is stopped is the same as that in FIG. Thereafter, the holder arm 66 is opened, the support of the electric component 54 by the electric component support mechanism 61 is released, and the mechanism arm 63 rotates from the correction position to the retracted position and stops, while the chuck arm 45 holds the soldering target component 51. By moving in the direction of approaching each other at the released lower limit position, the left and right edges of the circuit board 52 in the component 51 to be soldered are taken into the lateral grooves of the chuck arm 45, and the chuck arm 45 completes the soldering. After supporting the component 51, it rises and stops at the ascending limit position. Thereafter, the soldered target component 51 supported by the chuck arm 45 and having been soldered is carried out by the transport mechanism 35 from directly above the elevating platform 8 to the next step in the direction of arrow X1.
[0020]
According to the present embodiment, considering solder depletion, as shown in FIG. 9, the plurality of mounting feet 55 of the electric component 54 and the plurality of mounting portions 56 of the circuit board 52 are connected to the molten solder liquid of the gate 3. In the case of pulling out from the surface A, as the mounting table 17 in the tilting mechanism 15 becomes oblique from horizontal, the mounting feet 55 and the mounting portions 56 located on the upper side of the mounting table 17 which are oblique are melted in the molten metal of the gate 3. Even if it is pulled out from the surface A, the mounting feet 55 and the mounting portions 56 located on the obliquely lower side of the mounting table 17 are immersed in the liquid level A of the molten solder in the gate 3. With such a configuration, the molten solder attached to the upper mounting feet 55 and the mounting portions 56 that are first drawn out from the liquid level A of the molten solder in the gate 3 is used to remove the molten solder in the gate 3. The solder is attracted to the molten solder attached to the lower mounting feet 55 and mounting portions 56 immersed in the liquid surface A. Therefore, the molten solder attached to the upper mounting feet 55 and the mounting portions 56 is prevented from bridging with the molten solder attached to the lower mounting feet 55 and the mounting sections 56. After being cut, it becomes hemispherical due to surface tension and solidifies, and the mounting foot 55 and the mounting portion 56 are fixedly connected.
[0021]
Further, since the electric component 54 is supported by the electric component support mechanism 61 in a corrected state from the start of the soldering of the electric component 54 to the circuit board 52 until the solidification of the solder is completed, the electric component 54 is It is soldered to the circuit board 52 in a uniform and self-standing posture that stands upright in the vertical direction with respect to the plate surface of the circuit board 52, so that quality reliability can be improved.
[0022]
Since the soldering target component 51 supplied to the mounting table 17 from the previous process by the transport mechanism 35 is heated in the previous process so that the adhesion of the solder to the soldering surface of the soldering target component is good, The circuit board 52 may be warped. For this reason, if the depth of the storage portion 19 is formed larger than the thickness of the circuit board 52, the front and rear edges of the circuit board 52 that falls horizontally from the chuck arm 45 are appropriately positioned in the storage portion 19. It can be mounted while. When positioning the circuit board 52 in the storage section 19, instead of performing the positioning such that the vertical surface of the storage section 19 and the end surfaces of the front and rear edges of the circuit board 52 come into contact with each other as in this embodiment, A large gap is formed between the vertical surface of the storage portion 19 and the end surfaces of the front and rear edges of the circuit board 52, and a plurality of positioning protrusions (not shown) are provided on the horizontal surface of the storage portion 19, and the circuit board is mounted on the positioning protrusion. A plurality of positioning projections and a plurality of mounting holes are individually inserted from above with the plurality of mounting holes (not shown) formed vertically through the circuit board 52 as the circuit board 52 falls from the chuck arm 45. It is also possible to position and mount the circuit board 52 on the mounting table 17 by fitting.
[0023]
In this case, if the storage section 19 is deleted from the mounting table 17 and a positioning projection is provided on the upper surface of the mounting table 17 corresponding to the deleted storage section 19 around the opening 18, the mounting table 17 needs to provide the storage section 19. There is no simple form. If the height of the positioning projection is higher than the thickness of the circuit board 52, the fitting between the positioning projection and the mounting hole can be ensured even if the circuit board 52 is warped, and the positioning of the circuit board 52 is optimized. . If the tip of the positioning projection is formed in a conical shape that gradually becomes thinner from below to above, the engagement between the positioning projection and the mounting hole is ensured. The mounting holes may be formed on the circuit board 52 exclusively for fitting with the positioning projections. However, if a mounting hole for mounting the circuit board 52 on a container as a product is used, the mounting holes may be used for positioning. Also, the mounting area of the electric components on the circuit board 52 is not reduced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a soldering apparatus according to one embodiment.
FIG. 2 is a schematic diagram showing the operation of the embodiment.
FIG. 3 is a schematic view showing the operation of the embodiment.
FIG. 4 is a schematic view showing the operation of the embodiment.
FIG. 5 is a schematic view showing the operation of the embodiment.
FIG. 6 is a schematic view showing the operation of the embodiment.
FIG. 7 is a schematic view showing the operation of the embodiment.
FIG. 8 is a schematic view showing the operation of the embodiment.
FIG. 9 is a schematic view showing the operation of the embodiment.
FIG. 10 is an exploded perspective view showing a conventional example.
FIG. 11 is a sectional view showing a conventional example.
FIG. 12 is a schematic view showing occurrence of a conventional solder bridge.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Solder tank 5 Elevating mechanism 15 Inclination mechanism 35 Transport mechanism 51 Component to be soldered 52 Circuit board 53 Through hole 54 Electrical component 55 Mounting foot 56 Mounting part

Claims (1)

槽内で溶融された半田の液面を槽上面の湯口に浮上させるとともに湯口から槽内に沈降させる半田槽と、湯口の挿入可能な上下方向に貫通する逃孔を有する昇降台を昇降する昇降機構と、半田付対象部品の半田付面を露出させる開口を有する搭載台を斜めの半田切姿勢と水平な半田付姿勢とに姿勢変更する傾斜機構と、搭載台に半田付対象部品を受け渡したり搭載台から半田付対象部品を受け取ったりする搬送機構とを備えたことを特徴とする半田付装置。Lifting and lowering a solder bath that raises the liquid level of the solder melted in the bath to the gate on the upper surface of the bath and sinks from the gate to the inside of the bath, and a lifting table that has a vertical hole through which the gate can be inserted. Mechanism, a tilting mechanism that changes the mounting table having an opening that exposes the soldering surface of the component to be soldered between an oblique soldering position and a horizontal soldering position, and transferring the component to be soldered to the mounting table. A soldering device comprising a transport mechanism for receiving a component to be soldered from a mounting table.
JP2002225854A 2002-08-02 2002-08-02 Soldering apparatus Withdrawn JP2004071683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002225854A JP2004071683A (en) 2002-08-02 2002-08-02 Soldering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002225854A JP2004071683A (en) 2002-08-02 2002-08-02 Soldering apparatus

Publications (1)

Publication Number Publication Date
JP2004071683A true JP2004071683A (en) 2004-03-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002225854A Withdrawn JP2004071683A (en) 2002-08-02 2002-08-02 Soldering apparatus

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012015400A (en) * 2010-07-02 2012-01-19 Canon Inc Solid-state imaging device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012015400A (en) * 2010-07-02 2012-01-19 Canon Inc Solid-state imaging device
US8878267B2 (en) 2010-07-02 2014-11-04 Canon Kabushiki Kaisha Solid-state imaging device

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