JP2004342639A - Apparatus and method for soldering metal part, and apparatus and method for removing soldered metal part - Google Patents

Apparatus and method for soldering metal part, and apparatus and method for removing soldered metal part Download PDF

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Publication number
JP2004342639A
JP2004342639A JP2003133900A JP2003133900A JP2004342639A JP 2004342639 A JP2004342639 A JP 2004342639A JP 2003133900 A JP2003133900 A JP 2003133900A JP 2003133900 A JP2003133900 A JP 2003133900A JP 2004342639 A JP2004342639 A JP 2004342639A
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Japan
Prior art keywords
metal component
heating block
metal
electronic circuit
soldering
Prior art date
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JP2003133900A
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Japanese (ja)
Inventor
Seiji Tokii
誠治 時井
Sei Furuichi
聖 古市
Yoshihiro Uda
吉博 宇田
Hiroyuki Takeuchi
宏之 竹内
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2003133900A priority Critical patent/JP2004342639A/en
Publication of JP2004342639A publication Critical patent/JP2004342639A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for soldering a metal which can melt a solder with a sufficient quantity of heat, which can work even when a component is close to the apparatus for soldering, which can suppress a working time, and which can prevent a metal component or an electronic circuit substrate from being warped; and to provide an apparatus for removing the soldered metal. <P>SOLUTION: The apparatus for soldering the metal components includes a heating block 5 disposed above the metal 12 placed on the electronic circuit substrate 1 to heat the metal in an always high temperature maintaining state, a drive 8 for vertically driving the heating block so as to be brought into contact with the metal, a bar-like retaining member 10 sliding in the through hole vertically passing through the heating block, and a cooling unit 11 for blowing cold blast to the soldered joint of the electronic circuit substrate to the metal. The pressing member is raised integrally with the heating block in the state that the upper part is larger in diameter than the through hole and locked to the upper surface of the heating block, and the lower part is projected from the heating block to press the metal. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、電磁シールド部品、放熱板、などの金属部品を電子回路基板に半田付けにより実装する金属部品の半田付け方法および半田付け装置とその半田付けされた金属部品の取り外し方法および取り外し装置に関する。
【0002】
【従来の技術】
現在、半田付け方法としては、こて式、フローディップ式、リフロー式、パルスヒート式、コンスタントヒート式などがある。電磁シールド部品、放熱板などの金属部品を電子回路基板に半田付けにより実装する場合にも、これらいずれかの方法が用いられている。
【0003】
また、電磁シールド部品を半田付けする場合、例えば、特許文献1に示されるコンスタントヒート式ヒータ装置が用いられる場合がある。このコンスタントヒート式ヒータ装置では、加熱後ヒータブロックに冷風を通し、かつ、周囲からヒータブロックに冷風を吹き付けて冷却時間を短縮する半田付けを行っている。そして、半田付け対象部位が電子部品リードであり、加熱するヒータブロックの当接する部分は細くて体積が比較的小さいものである。
【0004】
【特許文献1】
特開平9―206931号公報
【0005】
【発明が解決しようとする課題】
しかし、電磁シールド部品を半田付けする場合、こて式では、半田付けしようとする電磁シールド部品が接近して配設されていると、こてがそれらの部品間に入らず、半田付けができない。また、こて式やパルスヒート式では熱容量が少なく、半田付けする箇所が広い面積のグランドであるため、半田付け時間が長くなってしまう。
【0006】
また、リフロー式では、リフロー加熱時の熱により基板の反りなどが発生し、電磁シールド部品の安定した半田付けが期待できない。
【0007】
また、コンスタントヒート方式では、加熱ブロック全体を加熱するものであるため、ヒータへの通電をカットしても加熱ブロックの温度が低下するのに時間がかかる。このため、加熱ブロックを電磁シールド部品に押し付けて半田を溶融させた後、通電をカットして加熱ブロックの温度が下がって半田が固まるまで長時間待つ必要があり作業時間の長さで現実的でない。
【0008】
特許文献1は、作業時間短縮のためのものであるが、半田付け対象部位が電子部品リードであり、加熱するヒータブロックの当接する部分は細くて体積が比較的小さく、電磁シールドの半田付けに必要な加熱ブロックの熱量に対する冷却には、効果が少ない。
【0009】
この本発明は、従来の問題を解決するためになされたもので、十分な熱量で半田の溶解ができ、作業時間を抑えることができ、部品が接近していても作業可能で、金属部品や電子回路基板の反りを防止することができる金属部品の半田付け装置並びに半田付け方法及び半田付け済み金属部品の取り外し装置並びに半田付け済み金属部品の取り外し方法を得る事を目的とするものである。
【0010】
【課題を解決するための手段】
本発明の金属部品の半田付け装置は、電子回路基板に載置された金属部品の上方に配置され、常時高温に維持された状態で金属部品を加熱する加熱ブロックと、加熱ブロックを金属部品に当接するように上下動させる駆動部と、加熱ブロックを上下に貫通する貫通孔内を摺動する棒状の押え部材と、電子回路基板と金属部品との半田接合部に冷風を吹き付ける冷却部とを備え、押え部材は、上部が貫通孔より径大で加熱ブロックの上面に係止された状態で加熱ブロックと一体で上昇すると共に、下端が加熱ブロックから突出して金属部品を押える構成を有している。
この構成により、他の部品に接することなく加熱ブロックを金属部品に当接させることができ、金属部品に十分な熱量を加えることができ、加熱ブロックを金属部品から離して、半田接合部に冷風を吹き付けて固化させることができる。
【0011】
また、本発明の金属部品の半田付け装置は、押え部材を複数個備え、各押え部材が各々独立して上下に摺動して、金属部品を押える構成を有している。
この構成により、金属部品に均一に荷重を掛けることができる。
【0012】
本発明の金属部品の半田付け方法は、電子回路基板に塗布された半田の上に金属部品を載置し、常時高温に維持された加熱ブロックを金属部品に当接させて加熱し、加熱された金属部品の熱で半田が融解した後、加熱ブロックを上下に貫通して摺動する棒状の押え部材で金属部材を押えた状態のまま、加熱ブロックを上昇させて金属部品から離間させた後、電子回路基板と金属部品との接合部に冷風を吹き付けて融解した半田を冷却して固化させ、半田の固化後に、加熱ブロックを押え部材と一体で上昇させることにより、押え部材を金属部品から離間させて金属部品の電子回路基板への半田付けを終える構成を有している。
この構成により、他の部品に接することなく加熱ブロックを金属部品に当接させることができ、金属部品に十分な熱量を加えることができ、加熱ブロックを金属部品から離して、半田接合部に冷風を吹き付けて固化させることができる。
【0013】
本発明の半田付け済み金属部品の取り外し装置は、電子回路基板に載置された金属部品の上方に配置され、常時高温に維持された状態で金属部品を加熱する加熱ブロックと、加熱ブロックを金属部品に当接するように上下動させる駆動部と、加熱ブロックを上下に貫通する貫通孔内を摺動する棒状の押え部材とを備え、押え部材は、上部が貫通孔より径大で加熱ブロックの上面に係止された状態で加熱ブロックと一体で上昇すると共に、加熱ブロックから突出した状態で金属部品を真空吸着する吸着孔を下端に有する構成を有している。
この構成により、他の部品に接することなく加熱ブロックを金属部品に当接させて、金属部品に十分な熱量を加えて金属部品を取り外すことができる。
【0014】
本発明の半田付け済み金属部品の取り外し方法は、金属部品が半田付けされた電子回路基板を受け台に固定し、常時高温に維持された加熱ブロックを金属部品に当接させて加熱し、加熱された金属部品の熱で半田が融解した後、加熱ブロックを上下に貫通して摺動する棒状の押え部材の下端で金属部品を真空吸着した状態で、加熱ブロックを上昇させ、加熱ブロックを金属部品から離間させた後に、加熱ブロックを押え部材と一体で上昇させることにより、押え部材に真空吸着された状態の金属部品が電子回路基板より取り外される構成を有している。
この構成により、他の部品に接することなく加熱ブロックを金属部品に当接させて、金属部品に十分な熱量を加えて金属部品を取り外すことができる。
【0015】
本発明の金属部品の半田付け用及び半田付け済み金属部品の取り外し用の加熱ブロックは、電子回路基板に載置又は半田付けされた金属部品に当接して金属部品を加熱する加熱ブロックであり、金属部品との当接面に、金属部品の形状に応じた凹部を備えると共に、凹部と外周面とを連通させる貫通孔を備えた構成を有している。
この構成により、半田付けする際に凹部に発生するフラックスガスを貫通穴より外部に逃がすることができる。
【0016】
本発明の金属部品の半田付け方法は、電子回路基板の金属部品を半田付けする位置に半田によりプリコートを行う工程と、プリコートされた上に半田を塗布する工程と、塗布された半田の上に金属部品を載置する工程と、半田の上に載置された金属部品に加熱ブロックを当接し、加熱された金属部品の熱で半田及びプリコートを溶融して金属部品を電子回路基板に半田付けする工程とからなる構成を有している。
この構成により、加熱ブロックを当接させて金属部品30をプリコートに食い込ませつつ半田付けができる。
【0017】
【発明の実施の形態】
以下、本発明の実施の形態を、図に示す金属部品の半田付け装置の構成図を一例に用いて詳細に説明する。
(実施の形態1)
図1は本発明の実施の形態1に係る金属部品の半田付け装置の構成を示す図であり、(a)は正面図、(b)は加熱ブロック5の左側面図、(c)は加熱ブロック5の右側面図である。 図2は同金属部品の半田付け装置の動作説明図である。図1に示す電子回路基板1は、電子回路を構成する電子部品13が載置、半田付けされていると共に、所定の箇所にクリーム半田15が塗布された基板である。受け台2は、電子回路基板1を位置決めピン2aで位置決めし保持する台である。加熱ブロック5は、受け台2の上方に位置し、常時加熱熱源ヒータ部材3を有するブロックである。加熱ブロック5は、断熱材7を介して加熱ブロック取付け台6に取り付けられており、加熱ブロック取付け台6は矢印A1、A2θ方向に揺動ができ、矢印Bの上下に動作する駆動部8にねじ13で取り付けられている。
【0018】
加熱ブロック取付け台6、断熱材7及び加熱ブロック5には、同一位置に貫通穴9が穿設されており、その貫通穴9に上下に摺動できるクリアランスで、半田付けしようとする金属部品12の押さえ部材10を通している。半田付けしようとする金属部品12の押さえ部材10は、半田付けしようとしている金属部品12を適正な重量で押さえる重りブロック10a、10bが取り付けられており、重りブロック10aは加熱ブロック取付け台6との当り面10cで貫通穴9より径が大きく,その当り面10cより下に落ちないようになっている。冷風噴出し管11は、矢印に示すように半田付けしようとしている金属部品12の半田付け部位を局所的に冷却できるように方向を定めて冷風を吹き出すものである。
【0019】
次に、図2で半田付け装置の動作を説明をする。まず、図1に示すように、電子回路を構成する電子部品13が載置され、半田付けされていて所定の箇所にクリーム半田15が塗布された電子回路基板1を受け台2に位置決め保持する。そして、半田付けしようとしている金属部品12をクリーム半田15上の所定の位置にマウントする。
【0020】
次に、図2(a)に示すように、駆動部8を下方向に作動させ、加熱ブロック5を金属部品12に所定圧力で押し当てる。これにより、金属部品12に熱が伝導し金属部品12自体が発熱体となり、金属部品12を半田付けする箇所の電子回路基板1とクリーム半田15を加熱、溶融する。
【0021】
次に、図2(b)に示すように、駆動部8を上方向に作動させ、加熱ブロック5を金属部品12から離す。その時、金属部品12の押さえ部材10は、重りブロック10a、10bの重さで下方向に下がったままであり、当接面10dで金属部品12に当接して押さえたままの状態である。この状態で、半田付け部の部位に、冷風噴出し管11から矢印方向で冷却エアーを吹き付けて、半田溶融部分を固化させて半田付けする。
【0022】
次に、図2(c)に示すように、駆動部8を図1の最初の位置まで上昇させ、金属部品12の押さえ部材10と金属部品12の当接面10dを間隔S離して半田付けを終了する。
【0023】
このように、実施の形態1の半田付け装置によれば、駆動部8で加熱ブロック5を上下に駆動できることから金属部品12や電子部品13等が接近していても半田付け可能である。また、半田付けに大きな熱容量を必要とする金属部品であっても、十分な熱量で半田付けができる。さらに、加熱ブロック5の体積が大きく熱容量が大きいものの、半田付け溶融後、加熱ブロック5を金属部品12から離して、金属部品12を押さえ部材10でのみ押さえながら電子回路基板1の半田接合部に冷風を吹き付けて半田付け固化するので、容易に半田溶融後の冷却固化時間を短時間にして、半田付け作業時間を抑えることができる。
【0024】
また、金属部品12の反りについては,半田溶融状態で押さえ部材10による適正な荷重をかけながら冷却するので防止できる。加熱と部品押さえを別々で対応することで加熱ブロック5を冷却しないで(常に温度は一定制御なので温度制御ロスが少ないので次のワークまでの加熱温度復帰時間は考えなくてよいほど短い)かつ、反り防止が容易にできるため、量産効率を向上することができる。
【0025】
また、実施の形態1の半田付け装置は、図3(a)に示すように金属部品12の押さえ部材10の重りブロック10a,10bを左右に分離している。これに対し、図3(b)の単体重りブロック18の場合は、寸法L1とL2の精度を高くして押さえ荷重の均一化を図りつつ押さえなければならないにもかかわらず、電子回路基板1の反り,金属部品12の平坦度によっては図3(b)のS1だけ隙間が発生し、均一荷重での半田付け管理が難しい。しかし、図3(a)の場合、重りブロック10a,10bが分離独立して荷重をかけることが可能なので、L1、L2の寸法管理も単体重りブロック18の場合ほどは必要ではなく、金属部品12の平坦度レベル、電子回路基板1の反りレベルに沿って、容易に均一荷重での半田付けができる。
【0026】
(実施の形態2)
次に、実施の形態2について説明する。図4は、本発明の実施の形態2に係る金属部品の半田付け済み部品取り外し装置の構成図である。図5は、同金属部品の半田付け済み部品取り外し装置の動作説明図である。図4に示す装置構成は、図1の金属部品12の半田付け装置の押さえ部材10の軸に沿って吸引孔10eを設けたものを使用している。吸引孔10eは、当接面10dから上方向に空気を吸引するための孔であり、当接面10dに接するものを真空吸着するためのものである。尚、その他冷風噴出し管11を使用しない点以外すべて図1と同じであるので説明は省略する。
【0027】
次に、図4及び図5で動作説明をする。図4に示すように、半田付けされた金属部品12を載置した電子回路基板1を受け台2で位置決め保持する。次に、図5(a)に示すように、駆動部8を下方向に作動し、加熱ブロック5を金属部品12に所定圧力で押し当てる。これにより、金属部品12に熱が伝導し金属部品12自体が発熱体となって、金属部品12を半田付けする場所のクリーム半田15を加熱、溶融する。
【0028】
次に、図5(b)に示すように、金属部品12の押え部材10の吸引穴10eで金属部品12を吸引し金属部品吸着確認(真空度確認)後、駆動部8を上に作動させ、加熱ブロック5を金属部品12から離す。それと同時に吸着された金属部品12を上に持ち上げ、電子回路基板1から取り外す。
【0029】
次に、図5(c)に示すように、受け皿17を矢印Aに動作させ、吸着して取り外した金属部品12の下方に位置させ、その状態で金属部品12の吸引部材16の吸引を切り、真空破壊ブローすることで吸着している金属部品12を離して、受け皿17で受ける。その後、受け皿17を矢印Aとは逆方向に移動させて取り外しを終了する。そして、次の取り外しする金属部品12の設備待機状態となる。
【0030】
このように、実施の形態2の半田付け済み部品取り外し装置によれば、金属部品12が熱容量の大きい部品の場合でも、周囲の部品の隣接状態に影響をおこさないで容易に取り外しすることができる。また、構成として冷風噴出し管11を半田付け装置と同様につけておけば、半田付け装置、および、取り外し装置として制御切り替えのみで設備構成はそのままで、1台で併用して使用することができる。
【0031】
(実施の形態3)
次に、実施の形態3について説明する。図6は、本発明の実施の形態3に係る金属部品の半田付け済み部品取り外し装置及び半田付け装置の構成図である。まず、本実施例で半田付け及び取り外しする電子回路基板1の金属部品20は、図6に示すように、電子回路基板1に載置された電子部品19の高さで接触する部分があるので、接触しないように抜き穴20aを設けている。そして、この抜き部20aのある金属部品20の半田付けの加熱ブロック25は、電子部品19を逃がす凹部25aと、その凹部25aから加熱ブロック25の外周に貫通する貫通穴25bを設けている。
【0032】
この加熱ブロック25の構成により、加熱半田付けする際に発生するフラックスガスが貫通穴25bより外部に逃がされ、凹部25aにフラックスガスが滞留することによる加熱ブロック25の腐食を防止し、腐食による熱伝導の劣化で半田付けの効率の悪化を抑えることができる。
【0033】
(実施の形態4)
次に、実施の形態4について説明する。図7は、本発明の実施の形態4に係る金属部品の半田付け方法の説明図である。ここで、図7(a)〜(c)は、具体的な半田付け方法を示す説明図であり、図7(d)は、金属部品をマウントする際のズレ発生時のクリーム半田の様子を示す状態図である。
【0034】
図7(a)に示すように、金属部品30を当接面30aの板厚t部分で電子回路基板1と半田付けしようとする場合、前工程でクリーム半田印刷をして、溶融することにより予めプリコート35を施し、そのプリコート35の上にクリーム半田36を塗布する。次に、図7(b)に示すように、クリーム半田36を塗布した部位に金属部品30をマウントする。そして、図7(c)に示すように、加熱ブロック5を金属部品30に当接させ、プリコート35及びクリーム半田36を溶融することにより実施の形態1と同じ半田付けを行う。
【0035】
加熱ブロック5を所定の圧力で押し当てると、金属部品30の当接面30aの部分がプリコート35にG部で食い込み,電子回路基板1の反りや金属部品30のマウント状態などにより発生する押し込み時のズレが防止できる。また、クリーム半田36は、金属部品30及びプリコート35に対してそれぞれ濡れ性が良い状態で半田付けされるので、電子回路基板1と金属部品30は非常に良い接合状態で半田付けされる。
【0036】
プリコート35を施さない同様な半田付け方法によれば、図7(d)に示すように、金属部品30をマウントする際、力Fで加圧すると、電子回路基板1の反り、金属部品30の変形等でF1方向に力が加わる。そして、金属部品30がF2方向にズレると、クリーム半田36が分断されてしまう場合がある。この半田付けは、金属部品30の発熱により行っているので、分断されたクリーム半田36aは、金属部品30に接触していないので溶融せず、クリーム半田のままで残ってしまう。しかしながら、金属部品30がプリコート35に食い込むことで、加熱ブロック5の押し込み時のズレを容易に防止できるためクリーム半田36の分断がなくなり、クリーム半田36が未溶融の状態で残ることを防止できる。
【0037】
【発明の効果】
以上のように本発明は、常時高温に維持された状態で金属部品を加熱する加熱ブロックを備えることで、大きな熱容量を必要とする金属部品であっても、十分な熱量で半田付けができ、加熱ブロックの熱容量が大きくても、加熱ブロックを金属部品から離して、半田接合部に冷風を吹き付けて固化させることができるので、半田付け作業時間を抑えることができ、駆動部で加熱ブロックを上下に駆動できることから部品が接近していても半田付け可能で、金属部品を押さえ部材でのみ押さえながら半田を冷却できることから、金属部品や電子回路基板の反りを防止することができるという効果を有する金属部品の半田付け装置を提供することができるものである。
【図面の簡単な説明】
【図1】本発明の実施の形態1に係る金属部品の半田付け装置の構成図
【図2】同金属部品の半田付け装置の動作説明図
【図3】同金属部品の半田付け装置の押さえ部材を説明する説明図
【図4】本発明の実施の形態2に係る金属部品の半田付け済み部品取り外し装置の構成図
【図5】同金属部品の半田付け済み部品取り外し装置の動作説明図
【図6】本発明の実施の形態3に係る金属部品の半田付け済み部品取り外し装置及び半田付け装置の構成図
【図7】本発明の実施の形態4に係る金属部品の半田付け方法の説明図
【符号の説明】
1 電子回路基板
2 受け台
2a 位置決めピン
3 常時加熱熱源ヒータ部材
5 加熱ブロック
6 加熱ブロック取付け台
7 断熱材
8 駆動部
9 貫通穴
10 押さえ部材
10a,10b 重りブロック
10c 当り面
10d 当接面
10e 吸引穴
11 冷風噴出し管
12 金属部品
17 受け皿
19 電子部品
20 金属部品
20a 抜き穴
25 加熱ブロック
25a 凹部
25b 貫通穴
30 金属部品
30a 当接面
35 プリコート
36 クリーム半田
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and apparatus for soldering a metal component for mounting a metal component such as an electromagnetic shield component and a heat sink on an electronic circuit board by soldering, and a method and an apparatus for removing the soldered metal component. .
[0002]
[Prior art]
At present, as a soldering method, there are a soldering method, a flow dipping method, a reflow method, a pulse heating method, a constant heating method, and the like. Either of these methods is also used when a metal component such as an electromagnetic shield component and a heat sink is mounted on an electronic circuit board by soldering.
[0003]
Further, when soldering an electromagnetic shield component, for example, a constant heat type heater device disclosed in Patent Document 1 may be used. In this constant heating type heater device, after heating, cool air is passed through the heater block, and cold air is blown from the surroundings to the heater block to perform soldering for shortening the cooling time. The part to be soldered is an electronic component lead, and the contacting part of the heater block to be heated is thin and relatively small in volume.
[0004]
[Patent Document 1]
JP 9-206931 A [0005]
[Problems to be solved by the invention]
However, when soldering an electromagnetic shield component, in the trowel type, if the electromagnetic shield component to be soldered is disposed close to the iron, the iron does not enter between those components and soldering cannot be performed. . Further, in the trowel type or the pulse heating type, the heat capacity is small, and the soldering portion is a ground having a large area, so that the soldering time becomes long.
[0006]
In the reflow method, warpage of the substrate occurs due to heat generated during reflow heating, and stable soldering of the electromagnetic shield component cannot be expected.
[0007]
Further, in the constant heating method, since the entire heating block is heated, it takes time for the temperature of the heating block to decrease even if the power supply to the heater is cut off. For this reason, after the heating block is pressed against the electromagnetic shield component to melt the solder, it is necessary to cut off the current and wait for a long time until the temperature of the heating block decreases and the solder hardens, which is not practical due to the length of working time. .
[0008]
Patent Document 1 is for shortening the working time, but the soldering target portion is an electronic component lead, and the contacting portion of the heater block to be heated is thin and relatively small in volume. There is little effect on cooling the required amount of heat of the heating block.
[0009]
The present invention has been made in order to solve the conventional problems, and it is possible to melt solder with a sufficient amount of heat, to reduce work time, to work even when components are approaching, to use metal components and It is an object of the present invention to provide a soldering device for a metal component, a soldering method, a device for removing a soldered metal component, and a method for removing a soldered metal component, which can prevent warpage of an electronic circuit board.
[0010]
[Means for Solving the Problems]
A metal component soldering apparatus according to the present invention is disposed above a metal component mounted on an electronic circuit board, and heats the metal component while being constantly maintained at a high temperature. A driving unit that moves up and down so as to abut, a rod-shaped pressing member that slides in a through hole that penetrates the heating block up and down, and a cooling unit that blows cold air to a solder joint between the electronic circuit board and the metal component. The holding member has a configuration in which an upper portion is larger than the through hole and rises integrally with the heating block in a state where the upper portion is locked to the upper surface of the heating block, and a lower end protrudes from the heating block to hold the metal component. I have.
With this configuration, the heating block can be brought into contact with the metal component without coming into contact with other components, a sufficient amount of heat can be applied to the metal component, and the heating block is separated from the metal component so that cold air is applied to the solder joint. Can be sprayed to solidify.
[0011]
Also, the metal component soldering apparatus of the present invention has a configuration in which a plurality of pressing members are provided, and each of the pressing members independently slides up and down to press the metal component.
With this configuration, a load can be uniformly applied to the metal component.
[0012]
In the method of soldering a metal component of the present invention, the metal component is placed on the solder applied to the electronic circuit board, and a heating block that is constantly maintained at a high temperature is brought into contact with the metal component and heated. After the solder is melted by the heat of the metal part, the heating block is raised and separated from the metal part while the metal member is held down by the rod-shaped holding member that slides vertically through the heating block. By blowing cold air onto the joint between the electronic circuit board and the metal component, the molten solder is cooled and solidified, and after the solder has been solidified, the heating block is raised integrally with the pressing member, so that the pressing member is removed from the metal component. It has a configuration in which the metal parts are separated from each other to complete the soldering of the metal parts to the electronic circuit board.
With this configuration, the heating block can be brought into contact with the metal component without coming into contact with other components, a sufficient amount of heat can be applied to the metal component, and the heating block is separated from the metal component so that cold air is applied to the solder joint. Can be sprayed to solidify.
[0013]
A device for removing a soldered metal component according to the present invention is arranged above a metal component mounted on an electronic circuit board, and heats the metal component while being constantly maintained at a high temperature. A drive unit that moves up and down so as to come into contact with the parts, and a rod-shaped pressing member that slides in a through hole that penetrates the heating block up and down. It has a configuration in which the lower end has a suction hole for vacuum-sucking a metal component while being raised integrally with the heating block while being locked to the upper surface and projecting from the heating block.
With this configuration, the heating block can be brought into contact with the metal component without contacting other components, and a sufficient amount of heat can be applied to the metal component to remove the metal component.
[0014]
The method for removing a soldered metal component according to the present invention includes fixing an electronic circuit board on which the metal component is soldered to a receiving table, and bringing a heating block, which is always maintained at a high temperature, into contact with the metal component to heat the substrate. After the solder is melted by the heat of the metal part, the heating part is raised while the metal part is vacuum-sucked at the lower end of a rod-shaped holding member that slides vertically through the heating block, and the heating block is metalized. After the component is separated from the components, the heating block is raised integrally with the pressing member, whereby the metal component that is vacuum-sucked to the pressing member is removed from the electronic circuit board.
With this configuration, the heating block can be brought into contact with the metal component without contacting other components, and a sufficient amount of heat can be applied to the metal component to remove the metal component.
[0015]
The heating block for soldering the metal component of the present invention and for removing the soldered metal component is a heating block that heats the metal component by contacting the metal component mounted or soldered on the electronic circuit board, The contact surface with the metal component is provided with a concave portion corresponding to the shape of the metal component and a through hole for communicating the concave portion with the outer peripheral surface.
With this configuration, the flux gas generated in the concave portion at the time of soldering can be released from the through hole to the outside.
[0016]
The method for soldering a metal component of the present invention includes a step of performing pre-coating with solder at a position where the metal component of the electronic circuit board is to be soldered; a step of applying solder on the pre-coated; and A step of placing a metal component, and a heating block is brought into contact with the metal component placed on the solder, and the heat of the heated metal component melts the solder and precoat to solder the metal component to an electronic circuit board. And a step of performing
With this configuration, it is possible to perform soldering while bringing the metal component 30 into the precoat by abutting the heating block.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to an example of a configuration diagram of a metal component soldering apparatus shown in the drawings.
(Embodiment 1)
1A and 1B are diagrams showing a configuration of a metal component soldering apparatus according to Embodiment 1 of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a left side view of a heating block 5, and FIG. It is a right view of the block 5. FIG. 2 is an operation explanatory view of the metal component soldering apparatus. The electronic circuit board 1 shown in FIG. 1 is a board on which electronic components 13 constituting an electronic circuit are placed and soldered, and a cream solder 15 is applied to a predetermined location. The receiving table 2 is a table that positions and holds the electronic circuit board 1 with the positioning pins 2a. The heating block 5 is a block that is located above the pedestal 2 and has the heating heat source heater member 3 at all times. The heating block 5 is mounted on a heating block mounting base 6 via a heat insulating material 7. The heating block mounting base 6 can swing in the directions of arrows A1 and A2θ, and a driving unit 8 that moves up and down the arrow B is provided. It is attached with screws 13.
[0018]
The heating block mounting base 6, the heat insulating material 7, and the heating block 5 are provided with through holes 9 at the same positions, and the metal parts 12 to be soldered are provided in the through holes 9 with clearance that can slide up and down. Through the holding member 10. The holding member 10 of the metal component 12 to be soldered has weight blocks 10a and 10b for holding the metal component 12 to be soldered with an appropriate weight, and the weight block 10a is connected to the heating block mounting base 6. The diameter of the contact surface 10c is larger than that of the through hole 9 so that it does not fall below the contact surface 10c. The cold air blowing tube 11 blows cold air in a predetermined direction so as to locally cool a soldering portion of the metal component 12 to be soldered as indicated by an arrow.
[0019]
Next, the operation of the soldering apparatus will be described with reference to FIG. First, as shown in FIG. 1, an electronic circuit board 1 on which an electronic component 13 constituting an electronic circuit is mounted and soldered and a cream solder 15 is applied to a predetermined position is positioned and held on a receiving table 2. . Then, the metal component 12 to be soldered is mounted at a predetermined position on the cream solder 15.
[0020]
Next, as shown in FIG. 2A, the driving unit 8 is operated downward, and the heating block 5 is pressed against the metal component 12 at a predetermined pressure. As a result, heat is conducted to the metal component 12, and the metal component 12 itself becomes a heating element, and the electronic circuit board 1 and the cream solder 15 where the metal component 12 is soldered are heated and melted.
[0021]
Next, as shown in FIG. 2B, the drive unit 8 is operated upward, and the heating block 5 is separated from the metal component 12. At this time, the pressing member 10 of the metal component 12 is kept down by the weight of the weight blocks 10a and 10b, and is in contact with the metal component 12 on the contact surface 10d and is pressed. In this state, cooling air is blown from the cold air blowing pipe 11 in the direction of the arrow to the portion of the soldering portion to solidify the solder melting portion and solder.
[0022]
Next, as shown in FIG. 2 (c), the drive unit 8 is raised to the initial position in FIG. 1, and the pressing member 10 of the metal component 12 and the contact surface 10d of the metal component 12 are separated by an interval S and soldered. To end.
[0023]
As described above, according to the soldering apparatus of the first embodiment, since the heating block 5 can be driven up and down by the driving unit 8, soldering can be performed even when the metal component 12, the electronic component 13, and the like are close to each other. Even a metal component requiring a large heat capacity for soldering can be soldered with a sufficient amount of heat. Furthermore, although the volume of the heating block 5 is large and the heat capacity is large, after the soldering and melting, the heating block 5 is separated from the metal component 12 and the metal component 12 is pressed only by the pressing member 10 while the soldering portion of the electronic circuit board 1 is held. Since the cold air is blown and solidified by soldering, the cooling and solidifying time after the melting of the solder can be easily shortened, and the soldering work time can be suppressed.
[0024]
In addition, the warpage of the metal component 12 can be prevented because the metal component 12 is cooled while applying an appropriate load by the holding member 10 in a molten state of the solder. The heating block 5 is not cooled by separately supporting the heating and the component holding (the temperature is always controlled to be constant, so the loss of the temperature control is small, so the heating temperature return time to the next work is so short that it is not necessary to consider) and Since warpage can be easily prevented, mass production efficiency can be improved.
[0025]
Further, in the soldering apparatus according to the first embodiment, as shown in FIG. 3A, the weight blocks 10a and 10b of the pressing member 10 of the metal component 12 are separated into right and left. On the other hand, in the case of the single weight block 18 shown in FIG. 3B, the electronic circuit board 1 needs to be pressed while the accuracy of the dimensions L1 and L2 must be increased to make the pressing load uniform. Depending on the warpage and the flatness of the metal component 12, a gap is generated by S1 in FIG. 3B, and it is difficult to manage the soldering with a uniform load. However, in the case of FIG. 3A, since the weight blocks 10a and 10b can apply loads independently, the dimensional control of L1 and L2 is not necessary as much as in the case of the single weight block 18, and the metal parts 12 According to the flatness level and the warpage level of the electronic circuit board 1, soldering with a uniform load can be easily performed.
[0026]
(Embodiment 2)
Next, a second embodiment will be described. FIG. 4 is a configuration diagram of an apparatus for removing a soldered component from a metal component according to Embodiment 2 of the present invention. FIG. 5 is an explanatory view of the operation of the device for removing a metal-soldered component. The apparatus configuration shown in FIG. 4 uses an apparatus in which suction holes 10e are provided along the axis of the holding member 10 of the apparatus for soldering metal parts 12 of FIG. The suction hole 10e is a hole for sucking air upward from the contact surface 10d, and is for vacuum-sucking an object in contact with the contact surface 10d. All other points are the same as those in FIG. 1 except that the cool air blow-out tube 11 is not used, and thus the description is omitted.
[0027]
Next, the operation will be described with reference to FIGS. As shown in FIG. 4, the electronic circuit board 1 on which the soldered metal parts 12 are mounted is positioned and held by the receiving table 2. Next, as shown in FIG. 5A, the drive unit 8 is operated downward, and the heating block 5 is pressed against the metal component 12 at a predetermined pressure. As a result, heat is conducted to the metal component 12, and the metal component 12 itself becomes a heating element, and the cream solder 15 at the place where the metal component 12 is soldered is heated and melted.
[0028]
Next, as shown in FIG. 5B, the metal part 12 is sucked through the suction hole 10e of the holding member 10 of the metal part 12, and after confirming the suction of the metal part (confirmation of the degree of vacuum), the drive unit 8 is operated upward. Then, the heating block 5 is separated from the metal part 12. At the same time, the sucked metal component 12 is lifted up and removed from the electronic circuit board 1.
[0029]
Next, as shown in FIG. 5 (c), the tray 17 is moved in the direction of arrow A to be positioned below the metal component 12 that has been sucked and removed, and in this state, the suction of the suction member 16 of the metal component 12 is cut off. Then, the metal component 12 that has been adsorbed by vacuum breaking blow is released and received by the receiving tray 17. Thereafter, the tray 17 is moved in the direction opposite to the arrow A to complete the removal. Then, the apparatus enters the equipment standby state for the next metal component 12 to be removed.
[0030]
As described above, according to the soldered component removing device of the second embodiment, even when the metal component 12 is a component having a large heat capacity, it can be easily removed without affecting the adjacent state of the surrounding components. . In addition, if the cold air blow-out tube 11 is attached in the same manner as the soldering device as a configuration, a single device can be used in combination as a soldering device and a detaching device, with only the equipment switching being performed by only control switching. .
[0031]
(Embodiment 3)
Next, a third embodiment will be described. FIG. 6 is a configuration diagram of an apparatus for removing a soldered component of a metal component and a soldering apparatus according to Embodiment 3 of the present invention. First, as shown in FIG. 6, the metal component 20 of the electronic circuit board 1 to be soldered and removed in this embodiment has a portion that comes into contact with the electronic component 19 mounted on the electronic circuit board 1 at the height. , A hole 20a is provided so as not to come into contact. The heating block 25 for soldering the metal component 20 having the cutout portion 20a has a concave portion 25a for allowing the electronic component 19 to escape, and a through hole 25b penetrating from the concave portion 25a to the outer periphery of the heating block 25.
[0032]
With the configuration of the heating block 25, the flux gas generated at the time of heating and soldering is released to the outside through the through hole 25b, and the corrosion of the heating block 25 due to the flux gas remaining in the concave portion 25a is prevented. Deterioration in heat conduction can suppress deterioration in soldering efficiency.
[0033]
(Embodiment 4)
Next, a fourth embodiment will be described. FIG. 7 is an explanatory diagram of a method for soldering a metal component according to Embodiment 4 of the present invention. Here, FIGS. 7A to 7C are explanatory diagrams showing a specific soldering method, and FIG. 7D shows a state of the cream solder at the time of occurrence of displacement when mounting a metal component. FIG.
[0034]
As shown in FIG. 7A, when the metal component 30 is to be soldered to the electronic circuit board 1 at the plate thickness t of the abutting surface 30a, cream solder printing is performed in a previous step, and melting is performed. A precoat 35 is applied in advance, and a cream solder 36 is applied on the precoat 35. Next, as shown in FIG. 7B, the metal component 30 is mounted on the portion where the cream solder 36 is applied. Then, as shown in FIG. 7 (c), the same soldering as in the first embodiment is performed by bringing the heating block 5 into contact with the metal component 30 and melting the precoat 35 and the cream solder 36.
[0035]
When the heating block 5 is pressed with a predetermined pressure, the portion of the contact surface 30a of the metal component 30 bites into the precoat 35 at the G portion, and the pressing occurs due to the warpage of the electronic circuit board 1 or the mounting state of the metal component 30. Deviation can be prevented. Further, since the cream solder 36 is soldered to the metal component 30 and the precoat 35 in a state of good wettability, the electronic circuit board 1 and the metal component 30 are soldered in a very good bonding state.
[0036]
According to a similar soldering method without applying the pre-coat 35, as shown in FIG. 7D, when the metal component 30 is mounted, when the metal component 30 is pressed with a force F, the warpage of the electronic circuit board 1 and the metal component 30 A force is applied in the F1 direction due to deformation or the like. When the metal component 30 is displaced in the F2 direction, the cream solder 36 may be divided. Since this soldering is performed by the heat generated by the metal component 30, the divided cream solder 36a does not contact the metal component 30 and thus does not melt and remains as cream solder. However, when the metal component 30 bites into the precoat 35, the displacement at the time of pushing the heating block 5 can be easily prevented, so that the cream solder 36 is not divided, and the cream solder 36 can be prevented from remaining in an unmelted state.
[0037]
【The invention's effect】
As described above, the present invention includes a heating block that heats a metal component while being constantly maintained at a high temperature, so that even a metal component requiring a large heat capacity can be soldered with a sufficient amount of heat, Even if the heat capacity of the heating block is large, the heating block can be separated from the metal parts and blown to the solder joints to solidify it. Metal that has the effect of being able to be soldered even when the components are close to each other and to cool the solder while holding down the metal components only with the pressing member, so that the metal components and the electronic circuit board can be prevented from warping. It is possible to provide a component soldering apparatus.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an apparatus for soldering metal parts according to Embodiment 1 of the present invention; FIG. 2 is an explanatory diagram of the operation of the apparatus for soldering metal parts; FIG. FIG. 4 is an explanatory view illustrating members. FIG. 4 is a configuration diagram of a device for removing a soldered component of a metal component according to Embodiment 2 of the present invention. FIG. 5 is an operation explanatory diagram of the device for removing a soldered component of the metal component. FIG. 6 is a configuration diagram of an apparatus for removing and soldering a metal component according to a third embodiment of the present invention, and FIG. 7 is an explanatory diagram of a method of soldering a metal component according to a fourth embodiment of the present invention. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic circuit board 2 Receiving stand 2a Locating pin 3 Heating member always heating 5 Heating block 6 Heating block mounting base 7 Heat insulating material 8 Drive unit 9 Through hole 10 Pressing members 10a, 10b Weight block 10c Contact surface 10d Contact surface 10e Suction Hole 11 Cold air blow-off tube 12 Metal component 17 Receiving tray 19 Electronic component 20 Metal component 20a Drilled hole 25 Heating block 25a Concave 25b Through hole 30 Metal component 30a Contact surface 35 Precoat 36 Cream solder

Claims (7)

電子回路基板に載置された金属部品の上方に配置され、常時高温に維持された状態で前記金属部品を加熱する加熱ブロックと、前記加熱ブロックを前記金属部品に当接するように上下動させる駆動部と、前記加熱ブロックを上下に貫通する貫通孔内を摺動する棒状の押え部材と、前記電子回路基板と前記金属部品との半田接合部に冷風を吹き付ける冷却部とを備え、前記押え部材は、上部が前記貫通孔より径大で前記加熱ブロックの上面に係止された状態で前記加熱ブロックと一体で上昇すると共に、下端が前記加熱ブロックから突出して前記金属部品を押えることを特徴とする金属部品の半田付け装置。A heating block disposed above the metal component mounted on the electronic circuit board and heating the metal component while being constantly maintained at a high temperature; and a drive for moving the heating block up and down so as to contact the metal component. Part, a rod-shaped pressing member that slides in a through hole vertically passing through the heating block, and a cooling unit that blows cold air to a solder joint between the electronic circuit board and the metal component, the pressing member comprising: Is characterized in that the upper part is integrally raised with the heating block in a state where the upper part is larger in diameter than the through hole and is locked on the upper surface of the heating block, and the lower end protrudes from the heating block and presses the metal component. Equipment for soldering metal parts. 前記押え部材を複数個備え、各押え部材が各々独立して上下に摺動して、前記金属部品を押えることを特徴とする請求項1記載の金属部品の半田付け装置。2. The apparatus according to claim 1, wherein a plurality of the pressing members are provided, and each of the pressing members independently slides up and down to press the metal component. 電子回路基板に塗布された半田の上に金属部品を載置し、常時高温に維持された加熱ブロックを前記金属部品に当接させて加熱し、前記加熱された金属部品の熱で前記半田が融解した後、前記加熱ブロックを上下に貫通して摺動する棒状の押え部材で前記金属部材を押えた状態のまま、前記加熱ブロックを上昇させて前記金属部品から離間させた後、前記電子回路基板と前記金属部品との接合部に冷風を吹き付けて前記融解した半田を冷却して固化させ、前記半田の固化後に、前記加熱ブロックを前記押え部材と一体で上昇させることにより、前記押え部材を前記金属部品から離間させて前記金属部品の前記電子回路基板への半田付けを終えることを特徴とする金属部品の半田付け方法。A metal component is placed on the solder applied to the electronic circuit board, and a heating block that is constantly maintained at a high temperature is brought into contact with the metal component and heated, and the solder is heated by the heat of the heated metal component. After melting, the heating block is raised and separated from the metal component while keeping the metal member pressed by a rod-shaped pressing member that slides vertically through the heating block, and then the electronic circuit The molten solder is cooled and solidified by blowing cold air to a joint between the substrate and the metal component, and after the solidification of the solder, the heating block is raised integrally with the pressing member, thereby pressing the pressing member. A method for soldering a metal component, wherein the soldering of the metal component to the electronic circuit board is completed by separating the metal component from the metal component. 電子回路基板に載置された金属部品の上方に配置され、常時高温に維持された状態で前記金属部品を加熱する加熱ブロックと、前記加熱ブロックを前記金属部品に当接するように上下動させる駆動部と、前記加熱ブロックを上下に貫通する貫通孔内を摺動する棒状の押え部材とを備え、前記押え部材は、上部が前記貫通孔より径大で前記加熱ブロックの上面に係止された状態で前記加熱ブロックと一体で上昇すると共に、前記加熱ブロックから突出した状態で前記金属部品を真空吸着する吸着孔を下端に有することを特徴とする半田付け済み金属部品の取り外し装置。A heating block disposed above the metal component mounted on the electronic circuit board and heating the metal component while being constantly maintained at a high temperature; and a drive for moving the heating block up and down so as to contact the metal component. And a rod-shaped pressing member that slides in a through hole vertically passing through the heating block. The pressing member has an upper portion that is larger in diameter than the through hole and is locked to the upper surface of the heating block. An apparatus for removing a soldered metal component, wherein the device has a suction hole at a lower end which rises integrally with the heating block in a state and which vacuum-holds the metal component while protruding from the heating block. 金属部品が半田付けされた電子回路基板を受け台に固定し、常時高温に維持された加熱ブロックを前記金属部品に当接させて加熱し、前記加熱された金属部品の熱で半田が融解した後、前記加熱ブロックを上下に貫通して摺動する棒状の押え部材の下端で前記金属部品を真空吸着した状態で、前記加熱ブロックを上昇させ、前記加熱ブロックを金属部品から離間させた後に、前記加熱ブロックを前記押え部材と一体で上昇させることにより、前記押え部材に真空吸着された状態の前記金属部品が前記電子回路基板より取り外されることを特徴とする半田付け済み金属部品の取り外し方法。The electronic circuit board to which the metal component was soldered was fixed to a receiving table, and a heating block maintained at a constant high temperature was brought into contact with the metal component and heated, and the solder was melted by the heat of the heated metal component. Thereafter, in a state in which the metal component is vacuum-sucked at the lower end of a rod-shaped holding member that slides vertically through the heating block, the heating block is raised, and after the heating block is separated from the metal component, A method of removing a soldered metal component, wherein the metal component in a state of being vacuum-adsorbed to the pressure member is removed from the electronic circuit board by raising the heating block integrally with the pressure member. 電子回路基板に載置又は半田付けされた金属部品に当接して前記金属部品を加熱する加熱ブロックは、前記金属部品との当接面に、前記金属部品の形状に応じた凹部を備えると共に、前記凹部と外周面とを連通させる貫通孔を備えたことを特徴とする金属部品の半田付け用及び半田付け済み金属部品の取り外し用の加熱ブロック。A heating block that heats the metal component by contacting the metal component mounted or soldered on the electronic circuit board includes a concave portion corresponding to the shape of the metal component on a contact surface with the metal component, A heating block for soldering a metal component and removing a soldered metal component, comprising a through-hole for communicating the recess with an outer peripheral surface. 電子回路基板の金属部品を半田付けする位置に半田によりプリコートを行う工程と、前記プリコートされた上に半田を塗布する工程と、前記塗布された半田の上に前記金属部品を載置する工程と、前記半田の上に載置された金属部品に加熱ブロックを当接し、加熱された金属部品の熱で前記半田及び前記プリコートを溶融して前記金属部品を前記電子回路基板に半田付けする工程とからなることを特徴とする金属部品の半田付け方法。A step of pre-coating with solder at a position where the metal part of the electronic circuit board is to be soldered, a step of applying solder on the pre-coated, and a step of placing the metal part on the applied solder Contacting a heating block with a metal component placed on the solder, melting the solder and the precoat with heat of the heated metal component, and soldering the metal component to the electronic circuit board; A method for soldering metal parts, comprising:
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010010359A (en) * 2008-06-26 2010-01-14 Fujitsu Ltd Repairing device and repairing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010010359A (en) * 2008-06-26 2010-01-14 Fujitsu Ltd Repairing device and repairing method
US8434670B2 (en) 2008-06-26 2013-05-07 Fujitsu Limited Repair apparatus and repair method

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