JP2005036249A - Barrel plating device - Google Patents

Barrel plating device Download PDF

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Publication number
JP2005036249A
JP2005036249A JP2003197302A JP2003197302A JP2005036249A JP 2005036249 A JP2005036249 A JP 2005036249A JP 2003197302 A JP2003197302 A JP 2003197302A JP 2003197302 A JP2003197302 A JP 2003197302A JP 2005036249 A JP2005036249 A JP 2005036249A
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JP
Japan
Prior art keywords
barrel
container
plating
barrel container
plating apparatus
Prior art date
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JP2003197302A
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Japanese (ja)
Inventor
Sakuji Hase
作二 長谷
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HASE GIKEN KK
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HASE GIKEN KK
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Priority to JP2003197302A priority Critical patent/JP2005036249A/en
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Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To feed a sufficient plating liquid into a barrel vessel even if the wall face of the barrel vessel is the one through which the plating liquid is hard to pass, and to prevent the retaining of a superfine object to be plated inside the barrel vessel on a barrel plating device for electroplating. <P>SOLUTION: A plating liquid in a plating bath is pumped up to a plating liquid vessel 13 in the upper direction with a pump 14. The plating liquid is fed into a barrel vessel 8 from the shaft edge side with a feed tube 15. Thus, even if the wall face of the barrel vessel 8 is formed of an extremely fine mesh member 8a for the superfine object to be plated, and the plating liquid is hard to pass therethrough, the plating liquid in a sufficient amount is fed into the barrel vessel 8, and plating can efficiently be applied to the superfine object to be plated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、この発明は、ばら状の被めっき物をめっきするバレルめっき装置に関するものである。
【0002】
【従来の技術】
バレルめっき装置は、筒状のバレル容器にばら状の被めっき物を入れて、バレル容器をめっき浴中で回転させることにより、バレル容器内の被めっき物をめっきするものである。バレルめっき装置には、電解めっき用のものと無電解めっき用のものとがあり、電解めっき用のものでは、めっき浴中に陽極が設けられ、バレル容器内へ被めっき物に接触する陰極が導かれる。
【0003】
通常、バレル容器は両端を左右のフレームに支持され、モータ等の駆動装置から歯車機構やベルト機構で回転力を伝達されて、水平回転軸の回りに回転駆動される。バレル容器は、胴部を形成する側壁部材と軸端面を形成する底壁部材とが突き合わされて、多角筒状や円筒状の容器に形成されており、容器が多角筒状の場合は、側壁部材同士も突き合わされることがある。これらのバレル容器には、蓋で開閉される被めっき物の投入口が設けられるとともに、その壁面には、めっき液を通す孔、スリット、メッシュ等が設けられている。
【0004】
上述したバレルめっき装置でめっきされる被めっき物には、ICチップ等の電子部品のように非常に微小なものがある。このような微小な被めっき物をバレルめっき装置でめっきすると、微小な被めっき物が、バレル容器の投入口と蓋との隙間や、側壁部材と底壁部材、および側壁部材同士の突き合わせ隙間に入り込み、めっき後にバレル容器内に残留しやすい問題がある。このように、被めっき物がバレル容器内に残留すると、残留した被めっき物が再度めっきされて過剰めっきの不良品となり、この不良品が次回以降の被めっき物に混じって排出される恐れがある。
【0005】
このような問題に対して、本発明者は、バレル容器を、軸方向に垂直な分割面で2分割されたカップ状容器で形成して、これらのカップ状容器を継目なしの一体構造とし、この2分割されたカップ状容器を分割面で突き合わせて組み立てることにより、微小な被めっき物が入り込む投入口と蓋との隙間や、側壁部材と底壁部材、および側壁部材同士の突き合わせ隙間をなくすことを先に提案している(特願2002−187189号)。この先願では、バレル容器内へのめっき液の通りをよくするために、その全壁面をメッシュ部材で形成することも提案しており、バレル容器内へ導かれた陰極端子は、旧来のものと同様に、バレル容器の側壁へ垂下されている。
【0006】
【発明が解決しようとする課題】
バレルめっき装置でめっきされる被めっき物は、さらに微小なものとなる傾向があり、大きさが数十μm程度の電子部品も出てきている。このような超微小な被めっき物を投入するバレル容器の壁面の孔やメッシュ等は、これよりも細かいものとする必要があり、メッシュ部材で形成してもめっき液の通りが不十分となって、めっき効率が著しく低下する問題がある。
【0007】
また、電解めっき用のバレルめっき装置では、バレル容器を継目なしカップ状容器を突き合わせたもので形成しても、超微小な被めっき物が、この突き合わせ部に入り込んだり、バレル容器内へ垂下される陰極端子の下に入り込んだりして滞留する問題がある。
【0008】
そこで、この発明の課題は、バレル容器の壁面がめっき液の通り難いものであっても、バレル容器内へ十分なめっき液を供給可能にすることと、電解めっき用のバレルめっき装置で、超微小な被めっき物のバレル容器内への滞留を防止することである。
【0009】
【課題を解決するための手段】
上記の課題を解決するために、この発明のバレルめっき装置は、両端を左右のフレームに支持されたバレル容器をめっき浴中で回転させて、バレル容器に投入されたばら状の被めっき物をめっきするバレルめっき装置において、前記バレル容器の軸端側に、バレル容器内へめっき液を供給する供給口を設けた構成を採用した。
【0010】
すなわち、バレル容器の軸端側に設けた供給口からめっき液をバレル容器内へ供給することにより、バレル容器の壁面がめっき液の通り難いものであっても、バレル容器内へ十分なめっき液を供給できるようにした。
【0011】
前記バレル容器の壁面をメッシュ部材で形成し、このメッシュ部材を60メッシュ(Nメッシュ:1インチ平方の面積に縦横N本ずつの素線を通したメッシュ)以上の細かいものとすることにより、超微小な被めっき物をバレル容器内に保持してめっきすることができる。
【0012】
前記供給口からバレル容器内へ供給するめっき液を、前記めっき浴から循環供給することにより、めっき液を効率よく使用することができる。
【0013】
前記軸端側に設けた供給口に、前記バレル容器内の軸方向中央側へ張り出す多孔パイプを接続し、この多孔パイプから前記めっき液をバレル容器内へ供給することにより、めっき液をより満遍なくバレル容器内へ供給して、めっき効率を高めることができる。
【0014】
また、この発明のバレルめっき装置は、両端を左右のフレームに支持されたバレル容器をめっき浴中で回転させて、バレル容器に投入されたばら状の被めっき物をめっきする電解めっき用のバレルめっき装置において、前記バレル容器を、その軸方向に垂直な分割面により少なくとも1箇所で分割して、この分割した分割面間に陰極電源へ接続されるリング状の電極板を挟み込み、このリング状電極板の内径端を、前記バレル容器の内径面からわずかに突出させた構成も採用した。
【0015】
すなわち、バレル容器を軸方向の少なくとも1箇所で分割し、この分割した軸方向に垂直な分割面間に、陰極電源へ接続されるリング状の電極板を挟み込んで、この電極板の内径端をバレル容器の内径面からわずかに突出させることにより、被めっき物が超微小なものであっても、これらが分割面同士の突き合わせ部や、バレル容器内へ垂下される陰極端子の下に入り込むことをなくし、被めっき物がバレル容器内へ滞留しないようにした。
【0016】
前記バレル容器の内径面から突出させた電極板の内径端を、立ち上がり垂直壁のない凸断面とすることにより、被めっき物が超微小なものであっても、バレル容器の内径面から突出する電極板内径端の根元部に滞留するのを防止することができる。
【0017】
前記バレル容器を複数箇所で分割し、前記各分割面間に挟み込んだ電極板同士を、少なくとも1本の導線で接続することにより、バレル容器の胴長が長くなっても、電極板に接触する被めっき物の個数を十分に確保して、被めっき物を効率よく陰極に通電することができる。
【0018】
前記電極板同士を接続する導線を、前記バレル容器の内壁面に軸方向へ沿わせることにより、この導線にも被めっき物を接触させて、より効率よく陰極に通電することができる。
【0019】
【発明の実施の形態】
以下、図1乃至図9に基づき、この発明の実施形態を説明する。図1乃至図6は、第1の実施形態を示す。このバレルめっき装置は、電子部品等の超微小な被めっき物を電解めっきするものであり、図1および図2に示すように、めっき槽1の上端縁に支持部材2が懸架されて、めっき浴の上方に設けられた支持部材2の支持台3に、駆動装置としてのモータ4と減速機5が取り付けられ、下端部を連結枠6で連結されてめっき浴中に垂下された左右のサイドフレーム7に、バレル容器8が左右の軸受部材9a、9bを介して回転自在に支持されている。モータ4の回転駆動力は、減速機5の歯車10aから左側のサイドフレーム7に取り付けられた2つの歯車10b、10cを介して、バレル容器8の左側軸端部に取り付けられた歯車10dに伝達され、被めっき物が投入されたバレル容器8が回転駆動される。なお、支持部材2には把手11が設けられ、モータ4と減速機5は、めっき液の飛沫がかからないように、カバー12で覆われている。
【0020】
また、前記バレル容器8の壁面は、超微小な被めっき物よりも細かい100メッシュのメッシュ部材8aで形成され、この細かいメッシュ部材8aで形成された壁面からのめっき液の流入不足を補うために、バレル容器8内へ供給するめっき液を入れるめっき液容器13が支持部材2に取り付けられている。このめっき液は、ポンプ14でめっき浴からめっき液容器13に汲み上げられ、フレキシブルな供給管15を介して、後述するバレル容器8の左側軸端部の供給口32からバレル容器8内へ供給されるようになっている。供給管15には、めっき液の滴下供給量を調節するバルブ16が取り付けられている。
【0021】
図2および図3に示すように、前記めっき浴中には陽極棒17が吊り下げられ、陰極電源(図示省略)からの導線18は、右側の軸受部材9bを通して、その先端に取り付けられた導電ブラシ19に接続されている。この導電ブラシ19は、バレル容器8の右側軸端部に取り付けられた導電リング20に摺接され、導電リング20には、後述する2枚のリング状電極板21が導線22で接続されている。
【0022】
前記導電ブラシ19は、図4(a)、(b)に示すように、円弧断面の4つの爪19aを十文字から鉤状に軸方向へ向けたものであり、軸受部材9bの先端に形成された十字状の凹部23に嵌め込まれてねじ止めされ、外周側へ付勢された各爪19aが、導電リング20の内周面に摺接するようになっている。なお、十字状の凹部23を形成する軸受部材9b先端の4本の柱部24は、その外周側の円弧面で、バレル容器8の右側軸端部の軸受面を形成するようになっている。
【0023】
図2および図3に示すように、前記各軸受部材9a、9bは、それぞれ小判形部25を左右のサイドフレーム7に設けられた前方に開口する窓26に嵌めこまれ、その外側に設けられたねじ部にナット27が螺着されて、軸方向への抜け止めをされている。また、各サイドフレーム7の窓26の上側には、上下にスライド可能な止め板28が取り付けられ、各軸受部材9a、9bの前方への抜け止めをしている。
【0024】
前記左側の軸受部材9aは、その中心に前記供給管15からのめっき液を通す通路孔29が設けられ、その外周に環状凸条の軸受部30が形成されている。また、バレル容器8の左側軸端部に取り付けられた歯車10dの外側面には、軸受部30に摺接する軸受リング31が取り付けられ、この軸受リング31でバレル容器8の左側軸端部が支持されている。この左側軸端部には、軸受部材9aの通路孔29に連通するめっき液の供給口32が設けられている。
【0025】
図3および図5に示すように、前記バレル容器8は、中央の六角胴部33と、その両側の六角錐部34とに、軸方向に垂直な2箇所の分割面で3分割されている。これらの六角胴部33と各六角錐部34は、いずれも継目なしの一体構造としたポリプロピレン樹脂で形成されており、その壁面を形成するメッシュ部材8aは、ポリエチレン樹脂で形成され、それぞれの稜を形成する枠体の内周側にインサート成形で一体化されている。
【0026】
前記六角胴部33と六角錐部34の各分割面には、それぞれ外径が円形で、内径がバレル容器8の内径と等しい六角形のフランジ35a、35bが設けられ、これらの各フランジ35a、35b間に、陰極となるリング状の電極板21が挟み込まれ、それぞれのボルト孔36に通されたボルト37で締め付けられている。各フランジ35a、35bと電極板21は、フランジ35aに設けられた2箇所の突起38と、フランジ35bおよび電極板21にそれぞれ設けられた2箇所ずつの穴39および貫通孔40との係合で位置決めされるようになっている。また、六角胴部33の両側のフランジ35a、右側の六角錐部34のフランジ35bおよび2枚の電極板21には、各電極板21を導電リング20に接続する導線22を通す貫通孔41が2箇所に設けられている。
【0027】
図5および図6(a)、(b)に示すように、前記リング状の電極板21は、外径が各フランジ35a、35bとほぼ等しい円形で、内径がこれらよりも僅かに小さい六角形に形成されている。したがって、各フランジ35a、35b間に挟み込まれた電極板21の内径端は、バレル容器8の内径面から僅かに突出し、被めっき物と接触する。この突出する内径端は、立ち上がり垂直壁のない三角形状の凸断面とされ、その根元部に超微小な被めっき物が滞留しないようになっている。この内径端の断面形状は、半円形状等の凸断面としてもよい。
【0028】
図7は、第2の実施形態を示す。このバレルめっき装置は、基本的な構成は第1の実施形態のものと同じであり、前記バレル容器8の左側軸端部に設けられためっき液の供給口32に、バレル容器8内の軸方向中央側へ張り出す多孔パイプ42を接続した点のみが異なる。多孔パイプ42は先端側が閉塞され、基端側をめっき液の供給口32に設けられたねじ部に螺着されている。この実施形態では、めっき液がより満遍なくバレル容器8内へ供給される。なお、多孔パイプ42の孔は細長のスリット孔としてもよい。
【0029】
図8および図9は、第3の実施形態を示す。このバレルめっき装置も、基本的な構成は第1の実施形態のものと同じであり、前記2枚のリング状電極板21を導電リング20に接続する導線22のうち、電極板21同士を接続する部分を、バレル容器8の内壁面に軸方向へ沿わせた点のみが異なる。この電極板21同士を接続する導線22の部分は、六角胴部33の稜に沿って6本配線されている。この実施形態では、被めっき物がこれらの稜に沿って配線された導線22の部分にも接触し、より効率よく陰極に通電される。
【0030】
上述した実施形態では、バレル容器内に供給するめっき液を、ポンプでめっき浴から上方のめっき液容器に汲み上げて循環供給するようにしたが、上方のめっき液容器のみを設け、このめっき液容器からバレル容器内へ新たなめっき液を滴下供給するようにしてもよい。
【0031】
また、上述した実施形態では、バレル容器の形状を六角筒状とし、その軸方向の2箇所で分割したが、バレル容器は他の多角筒状や円筒状としてもよく、その分割箇所は1箇所または3箇所以上とすることもできる。
【0032】
なお、本発明に係るバレルめっき装置は、無電解めっき用のものにも適用することができ、無電解めっき用のものでは、必ずしもバレル容器を軸方向で分割する必要はなく、勿論、分割面間にリング状電極板も挟み込む必要はない。
【0033】
【発明の効果】
以上のように、この発明のバレルめっき装置は、バレル容器の軸端側に設けた供給口からめっき液をバレル容器内へ供給するようにしたので、バレル容器の壁面が超微小な被めっき物用の非常に細かいメッシュ等で形成され、めっき液が通り難いものであっても、バレル容器内へ十分なめっき液を供給して、被めっき物を効率よくめっきすることができる。
【0034】
前記供給口からバレル容器内へ供給するめっき液を、めっき浴から循環供給することにより、めっき液を効率よく使用することができる。
【0035】
前記軸端側に設けた供給口に、バレル容器内の軸方向中央側へ張り出す多孔パイプを接続し、この多孔パイプからめっき液をバレル容器内へ供給することにより、めっき液をより満遍なくバレル容器内へ供給して、めっき効率をより高めることができる。
【0036】
また、この発明のバレルめっき装置は、電解めっき用のものを対象として、バレル容器を軸方向の少なくとも1箇所で分割し、この分割した軸方向に垂直な分割面間に、陰極電源へ接続されるリング状の電極板を挟み込んで、この電極板の内径端をバレル容器の内径面からわずかに突出させるようにしたので、被めっき物が超微小なものであっても、これらが分割面同士の突き合わせ部や、バレル容器内へ垂下される陰極端子の下に入り込むことをなくし、被めっき物がバレル容器内へ滞留しないようにすることができる。
【0037】
前記バレル容器の内径面から突出させた電極板の内径端を、立ち上がり垂直壁のない凸断面とすることにより、被めっき物が超微小なものであっても、バレル容器の内径面から突出する電極板内径端の根元部に滞留するのを防止することができる。
【0038】
前記バレル容器を複数箇所で分割し、各分割面間に挟み込んだ電極板同士を、少なくとも1本の導線で接続することにより、バレル容器の胴長が長くなっても、電極板に接触する被めっき物の個数を十分に確保して、被めっき物を効率よく陰極に通電することができる。
【0039】
前記電極板同士を接続する導線を、バレル容器の内壁面に軸方向へ沿わせることにより、この導線にも被めっき物を接触させて、より効率よく陰極に通電することができる。
【図面の簡単な説明】
【図1】第1の実施形態のバレルめっき装置を示す一部切欠き正面図
【図2】図1の一部切欠き側面図
【図3】図1のバレル容器を拡大して示す縦断面図
【図4】aは図3の導電ブラシの取り付け部を示す分解斜視図、bはaの導電ブラシを取り付けた状態を示す斜視図
【図5】図3のバレル容器を示す一部省略分解斜視図
【図6】aは図3のVI−VI線に沿った断面図、bはaのB−B線に沿った断面図
【図7】第2の実施形態のバレルめっき装置のバレル容器を示す縦断面図
【図8】第3の実施形態のバレルめっき装置のバレル容器を示す縦断面図
【図9】図8のIX−IX線に沿った断面図
【符号の説明】
1 めっき槽
2 支持部材
3 支持台
4 モータ
5 減速機
6 連結枠
7 サイドフレーム
8 バレル容器
8a メッシュ部材
9a、9b 軸受部材
10a、10b、10c、10d 歯車
11 把手
12 カバー
13 めっき液容器
14 ポンプ
15 供給管
16 バルブ
17 陽極棒
18 導線
19 導電ブラシ
19a 爪
20 導電リング
21 電極板
22 導線
23 凹部
24 柱部
25 小判形部
26 窓
27 ナット
28 止め板
29 通路孔
30 軸受部
31 軸受リング
32 供給口
33 六角胴部
34 六角錐部
35a、35b フランジ
36 ボルト孔
37 ボルト
38 突起
39 穴
40、41 貫通孔
42 多孔パイプ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a barrel plating apparatus for plating a loose object to be plated.
[0002]
[Prior art]
The barrel plating apparatus is intended to plate the object to be plated in the barrel container by putting the object to be plated in a cylindrical barrel container and rotating the barrel container in a plating bath. There are two types of barrel plating equipment, one for electrolytic plating and one for electroless plating. In one for electrolytic plating, an anode is provided in the plating bath, and a cathode that contacts the object to be plated is placed in the barrel vessel. Led.
[0003]
Normally, the barrel container is supported at both ends by left and right frames, and rotational force is transmitted from a driving device such as a motor by a gear mechanism or a belt mechanism to rotate around a horizontal rotation shaft. The barrel container is formed into a polygonal cylindrical or cylindrical container by abutting a side wall member that forms the body part and a bottom wall member that forms the shaft end surface. The members may also face each other. These barrel containers are provided with an inlet for an object to be plated that is opened and closed by a lid, and the wall surface thereof is provided with a hole for passing the plating solution, a slit, a mesh, and the like.
[0004]
There are very minute objects to be plated by the barrel plating apparatus described above, such as electronic parts such as IC chips. When such a minute object to be plated is plated with a barrel plating apparatus, the minute object to be plated becomes a gap between the inlet and the lid of the barrel container, a butt gap between the side wall member and the bottom wall member, and the side wall members. There is a problem that it tends to remain in the barrel container after entering and plating. In this way, if the object to be plated remains in the barrel container, the remaining object to be plated is plated again and becomes a defective product of overplating, and this defective product may be mixed with the object to be plated next time and discharged. is there.
[0005]
In order to solve such a problem, the present inventor formed a barrel container with a cup-shaped container divided into two by a dividing surface perpendicular to the axial direction, and made these cup-shaped containers a seamless integrated structure, By assembling the cup-shaped container divided into two parts at the dividing surface, the gap between the inlet and the lid into which a minute object to be plated enters, and the gap between the side wall member and the bottom wall member and between the side wall members are eliminated. This has been proposed previously (Japanese Patent Application No. 2002-187189). In this prior application, in order to improve the flow of the plating solution into the barrel container, it has also been proposed to form the entire wall surface with a mesh member, and the cathode terminal led into the barrel container is assumed to be an old one. Similarly, it depends from the side wall of the barrel container.
[0006]
[Problems to be solved by the invention]
An object to be plated with a barrel plating apparatus tends to be even finer, and an electronic component having a size of about several tens of μm has come out. Holes and meshes on the wall surface of the barrel container in which such ultra-fine objects to be plated are put need to be finer than this, and even if formed with a mesh member, the passage of the plating solution is insufficient Thus, there is a problem that the plating efficiency is remarkably lowered.
[0007]
Also, in barrel plating equipment for electroplating, even if the barrel container is formed by abutting a seamless cup-shaped container, an ultra-fine plated object can enter this butted part or hang down into the barrel container. There is a problem that it enters and stays under the cathode terminal.
[0008]
Therefore, the problem of the present invention is that it is possible to supply a sufficient plating solution into the barrel vessel even when the wall surface of the barrel vessel is difficult to pass through the plating solution, and a barrel plating apparatus for electrolytic plating. It is to prevent a minute object to be plated from staying in the barrel container.
[0009]
[Means for Solving the Problems]
In order to solve the above-described problems, the barrel plating apparatus of the present invention is configured to rotate a barrel container supported by left and right frames at both ends in a plating bath so that a rose-shaped object to be plated put into the barrel container is obtained. In the barrel plating apparatus for plating, a configuration in which a supply port for supplying a plating solution into the barrel container is provided on the shaft end side of the barrel container.
[0010]
That is, by supplying the plating solution into the barrel vessel from the supply port provided on the shaft end side of the barrel vessel, even if the wall surface of the barrel vessel is difficult to pass through the plating solution, sufficient plating solution is introduced into the barrel vessel. Can be supplied.
[0011]
By forming the wall surface of the barrel container with a mesh member, and making the mesh member finer than 60 mesh (N mesh: a mesh obtained by passing N strands in the vertical and horizontal directions in an area of 1 inch square) A minute object to be plated can be held in a barrel container and plated.
[0012]
By plating and supplying the plating solution supplied from the supply port into the barrel container from the plating bath, the plating solution can be used efficiently.
[0013]
By connecting a perforated pipe projecting toward the axially central side in the barrel container to the supply port provided on the shaft end side, and supplying the plating solution from the perforated pipe into the barrel container, It is possible to increase the plating efficiency by supplying the barrel container evenly.
[0014]
Further, the barrel plating apparatus of the present invention is a barrel for electrolytic plating in which a barrel container whose both ends are supported by left and right frames is rotated in a plating bath to plate a loose object to be plated placed in the barrel container. In the plating apparatus, the barrel container is divided at least at one location by a dividing surface perpendicular to the axial direction, and a ring-shaped electrode plate connected to a cathode power source is sandwiched between the divided surfaces, and the ring shape A configuration in which the inner diameter end of the electrode plate slightly protrudes from the inner diameter surface of the barrel container was also adopted.
[0015]
That is, the barrel container is divided at least in one axial direction, and a ring-shaped electrode plate connected to the cathode power source is sandwiched between the divided planes perpendicular to the axial direction, and the inner diameter end of the electrode plate is By slightly projecting from the inner diameter surface of the barrel container, even if the object to be plated is ultra-fine, these get into the butted part of the split surfaces and under the cathode terminal hanging down into the barrel container This prevents the object to be plated from staying in the barrel container.
[0016]
By making the inner diameter end of the electrode plate protruding from the inner diameter surface of the barrel container a convex cross section without a rising vertical wall, even if the object to be plated is very fine, it protrudes from the inner diameter surface of the barrel container. It is possible to prevent the electrode plate from staying at the root portion of the inner diameter end of the electrode plate.
[0017]
The barrel container is divided into a plurality of locations, and the electrode plates sandwiched between the divided surfaces are connected to each other by at least one conductive wire, thereby contacting the electrode plates even when the barrel container length increases. A sufficient number of objects to be plated can be secured, and the objects to be plated can be efficiently energized to the cathode.
[0018]
By arranging the conductive wire connecting the electrode plates along the inner wall surface of the barrel container in the axial direction, the object to be plated can be brought into contact with the conductive wire, and the cathode can be more efficiently energized.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6 show a first embodiment. This barrel plating apparatus is for electrolytically plating an extremely minute object to be plated such as an electronic component. As shown in FIGS. 1 and 2, a support member 2 is suspended on the upper edge of the plating tank 1, A motor 4 and a speed reducer 5 as a driving device are attached to a support base 3 of a support member 2 provided above the plating bath, and the left and right sides are suspended in the plating bath with the lower ends connected by a connecting frame 6. A barrel container 8 is rotatably supported on the side frame 7 via left and right bearing members 9a and 9b. The rotational driving force of the motor 4 is transmitted from the gear 10a of the speed reducer 5 to the gear 10d attached to the left shaft end of the barrel container 8 via the two gears 10b and 10c attached to the left side frame 7. Then, the barrel container 8 into which the object to be plated is charged is driven to rotate. The support member 2 is provided with a handle 11, and the motor 4 and the speed reducer 5 are covered with a cover 12 so that the plating solution is not splashed.
[0020]
Further, the wall surface of the barrel container 8 is formed of a mesh member 8a having a mesh size finer than that of an extremely fine object to be plated, so as to compensate for insufficiency of inflow of the plating solution from the wall surface formed by the fine mesh member 8a. Further, a plating solution container 13 for containing a plating solution to be supplied into the barrel container 8 is attached to the support member 2. The plating solution is pumped up from the plating bath to the plating solution container 13 by the pump 14 and is supplied into the barrel container 8 through a flexible supply pipe 15 from a supply port 32 at the end of the left shaft of the barrel container 8 described later. It has become so. A valve 16 for adjusting the dropping supply amount of the plating solution is attached to the supply pipe 15.
[0021]
As shown in FIGS. 2 and 3, an anode rod 17 is suspended in the plating bath, and a conductive wire 18 from a cathode power source (not shown) passes through a right bearing member 9b and is conductively attached to the tip thereof. Connected to the brush 19. The conductive brush 19 is slidably contacted with a conductive ring 20 attached to the right shaft end portion of the barrel container 8, and two ring-shaped electrode plates 21 (to be described later) are connected to the conductive ring 20 by conducting wires 22. .
[0022]
As shown in FIGS. 4 (a) and 4 (b), the conductive brush 19 has four claws 19a having an arc cross section oriented in an axial direction from a cross to a hook shape, and is formed at the tip of a bearing member 9b. Each claw 19 a that is fitted into the cross-shaped recess 23 and screwed and urged toward the outer peripheral side comes into sliding contact with the inner peripheral surface of the conductive ring 20. The four pillars 24 at the tip of the bearing member 9b that form the cross-shaped recess 23 form a bearing surface at the end of the right shaft of the barrel container 8 with an arc surface on the outer periphery thereof. .
[0023]
As shown in FIGS. 2 and 3, each of the bearing members 9a and 9b has the oval-shaped portion 25 fitted in a window 26 that opens in the front of the left and right side frames 7 and is provided outside thereof. A nut 27 is screwed onto the threaded portion to prevent it from coming off in the axial direction. Further, a stopper plate 28 slidable in the vertical direction is attached to the upper side of the window 26 of each side frame 7 to prevent the bearing members 9a and 9b from coming off to the front.
[0024]
The left bearing member 9a is provided with a passage hole 29 through which the plating solution from the supply pipe 15 passes in the center, and an annular ridge bearing portion 30 is formed on the outer periphery thereof. A bearing ring 31 that is in sliding contact with the bearing portion 30 is attached to the outer surface of the gear 10d attached to the left shaft end portion of the barrel container 8, and the left shaft end portion of the barrel container 8 is supported by the bearing ring 31. Has been. A plating solution supply port 32 communicating with the passage hole 29 of the bearing member 9a is provided at the left shaft end.
[0025]
As shown in FIGS. 3 and 5, the barrel container 8 is divided into a hexagonal body portion 33 at the center and hexagonal pyramid portions 34 on both sides of the barrel container 8 by two dividing surfaces perpendicular to the axial direction. . Each of the hexagonal body portion 33 and each hexagonal pyramid portion 34 is formed of a polypropylene resin having a seamless integral structure, and the mesh member 8a forming the wall surface is formed of a polyethylene resin, and each ridge It is integrated by insert molding on the inner peripheral side of the frame body forming the.
[0026]
Hexagonal flanges 35a and 35b each having a circular outer diameter and an inner diameter equal to the inner diameter of the barrel container 8 are provided on each of the split surfaces of the hexagonal body portion 33 and the hexagonal pyramid portion 34. A ring-shaped electrode plate 21 serving as a cathode is sandwiched between 35 b and is fastened by bolts 37 passed through the respective bolt holes 36. Each flange 35a, 35b and the electrode plate 21 are engaged by engagement of two protrusions 38 provided on the flange 35a and two holes 39 and through holes 40 respectively provided on the flange 35b and the electrode plate 21. It is designed to be positioned. Further, the flanges 35a on both sides of the hexagonal body portion 33, the flanges 35b of the right hexagonal pyramid portion 34, and the two electrode plates 21 have through holes 41 through which the conductive wires 22 connecting the electrode plates 21 to the conductive rings 20 are passed. It is provided in two places.
[0027]
As shown in FIGS. 5 and 6 (a) and 6 (b), the ring-shaped electrode plate 21 has a hexagonal shape in which the outer diameter is substantially the same as each of the flanges 35a and 35b, and the inner diameter is slightly smaller than these. Is formed. Therefore, the inner diameter end of the electrode plate 21 sandwiched between the flanges 35a and 35b slightly protrudes from the inner diameter surface of the barrel container 8 and contacts the object to be plated. The protruding inner diameter end has a triangular convex cross section without a rising vertical wall so that an ultra-fine plated object does not stay at the root. The cross-sectional shape of the inner diameter end may be a convex cross section such as a semicircular shape.
[0028]
FIG. 7 shows a second embodiment. This barrel plating apparatus has the same basic configuration as that of the first embodiment, and the shaft in the barrel container 8 is connected to the plating solution supply port 32 provided at the left shaft end of the barrel container 8. The only difference is that the perforated pipe 42 projecting toward the center in the direction is connected. The perforated pipe 42 is closed at the front end side, and the base end side is screwed to a screw portion provided in the plating solution supply port 32. In this embodiment, the plating solution is more evenly supplied into the barrel container 8. The hole of the perforated pipe 42 may be an elongated slit hole.
[0029]
8 and 9 show a third embodiment. This barrel plating apparatus has the same basic configuration as that of the first embodiment, and connects the electrode plates 21 among the conductive wires 22 that connect the two ring-shaped electrode plates 21 to the conductive ring 20. The only difference is that the portion to be aligned is aligned with the inner wall surface of the barrel container 8 in the axial direction. Six portions of the conductive wire 22 connecting the electrode plates 21 are wired along the ridge of the hexagonal body portion 33. In this embodiment, the object to be plated also contacts the portion of the conductive wire 22 wired along these ridges, and the cathode is more efficiently energized.
[0030]
In the above-described embodiment, the plating solution supplied into the barrel container is pumped from the plating bath to the upper plating solution container and circulated, but only the upper plating solution container is provided, and this plating solution container is provided. A new plating solution may be supplied dropwise to the barrel container.
[0031]
In the above-described embodiment, the shape of the barrel container is a hexagonal cylinder, and the barrel container is divided at two positions in the axial direction. However, the barrel container may be another polygonal cylinder or a cylindrical shape, and the division part is one place. Or it can also be three or more places.
[0032]
The barrel plating apparatus according to the present invention can also be applied to an electroless plating apparatus. In the electroless plating apparatus, it is not always necessary to divide the barrel container in the axial direction. There is no need to sandwich a ring-shaped electrode plate between them.
[0033]
【The invention's effect】
As described above, since the barrel plating apparatus of the present invention is configured to supply the plating solution into the barrel container from the supply port provided on the shaft end side of the barrel container, the wall surface of the barrel container is to be plated. Even if the plating solution is formed of a very fine mesh or the like and difficult to pass through the plating solution, a sufficient plating solution can be supplied into the barrel container to efficiently plate the object to be plated.
[0034]
By circulatingly supplying the plating solution supplied from the supply port into the barrel vessel from the plating bath, the plating solution can be used efficiently.
[0035]
By connecting a perforated pipe projecting toward the axially central side in the barrel container to the supply port provided on the shaft end side, and supplying the plating solution from the perforated pipe into the barrel container, the plating solution is more evenly barreled. It can supply to a container and can improve plating efficiency more.
[0036]
The barrel plating apparatus according to the present invention divides a barrel container at least in one axial direction for an object for electrolytic plating, and is connected to a cathode power source between the divided planes perpendicular to the divided axial direction. The ring-shaped electrode plate is sandwiched and the inner diameter end of this electrode plate is slightly protruded from the inner diameter surface of the barrel container. It is possible to prevent the object to be plated from staying in the barrel container by eliminating the entry between the butted portions and the cathode terminal hanging down into the barrel container.
[0037]
By making the inner diameter end of the electrode plate protruding from the inner diameter surface of the barrel container a convex cross section without a rising vertical wall, even if the object to be plated is very fine, it protrudes from the inner diameter surface of the barrel container. It is possible to prevent the electrode plate from staying at the root portion of the inner diameter end of the electrode plate.
[0038]
The barrel container is divided at a plurality of locations, and the electrode plates sandwiched between the divided surfaces are connected to each other by at least one conductive wire, so that even if the barrel length of the barrel container is increased, the electrode plate is in contact with the electrode plate. A sufficient number of plated objects can be secured and the object to be plated can be efficiently energized to the cathode.
[0039]
By arranging the conductive wire connecting the electrode plates along the inner wall surface of the barrel container in the axial direction, the cathode can be brought into contact with the conductive wire, and the cathode can be more efficiently energized.
[Brief description of the drawings]
1 is a partially cutaway front view showing a barrel plating apparatus according to a first embodiment. FIG. 2 is a partially cutaway side view of FIG. 1. FIG. 4A is an exploded perspective view showing a mounting portion of the conductive brush in FIG. 3, and b is a perspective view showing a state in which the conductive brush of a is attached. FIG. 5 is a partially omitted exploded view showing the barrel container in FIG. FIG. 6A is a cross-sectional view taken along line VI-VI in FIG. 3, and b is a cross-sectional view taken along line BB in FIG. 7. FIG. 7 is a barrel container of a barrel plating apparatus according to the second embodiment. FIG. 8 is a longitudinal sectional view showing a barrel container of a barrel plating apparatus according to a third embodiment. FIG. 9 is a sectional view taken along line IX-IX in FIG.
DESCRIPTION OF SYMBOLS 1 Plating tank 2 Support member 3 Support stand 4 Motor 5 Reduction gear 6 Connection frame 7 Side frame 8 Barrel container 8a Mesh member 9a, 9b Bearing member 10a, 10b, 10c, 10d Gear 11 Handle 12 Cover 13 Plating solution container 14 Pump 15 Supply pipe 16 Valve 17 Anode rod 18 Conductor 19 Conductive brush 19a Claw 20 Conductive ring 21 Electrode plate 22 Conductor 23 Recess 24 Column portion 25 Oval portion 26 Window 27 Nut 28 Stop plate 29 Passage hole 30 Bearing portion 31 Bearing ring 32 Supply port 33 Hexagonal trunk 34 Hexagonal cone 35a, 35b Flange 36 Bolt hole 37 Bolt 38 Projection 39 Hole 40, 41 Through hole 42 Perforated pipe

Claims (8)

両端を左右のフレームに支持されたバレル容器をめっき浴中で回転させて、バレル容器に投入されたばら状の被めっき物をめっきするバレルめっき装置において、前記バレル容器の軸端側に、バレル容器内へめっき液を供給する供給口を設けたことを特徴とするバレルめっき装置。In a barrel plating apparatus for rotating a barrel container whose both ends are supported by left and right frames in a plating bath and plating a rose-shaped object to be plated placed in the barrel container, the barrel container is disposed on the shaft end side of the barrel container. A barrel plating apparatus provided with a supply port for supplying a plating solution into a container. 前記バレル容器の壁面をメッシュ部材で形成し、このメッシュ部材を60メッシュ以上の細かいものとした請求項1に記載のバレルめっき装置。The barrel plating apparatus according to claim 1, wherein a wall surface of the barrel container is formed of a mesh member, and the mesh member is finer than 60 mesh. 前記供給口からバレル容器内へ供給するめっき液を、前記めっき浴から循環供給するようにした請求項1または2に記載のバレルめっき装置。The barrel plating apparatus according to claim 1 or 2, wherein a plating solution supplied from the supply port into the barrel container is circulated and supplied from the plating bath. 前記軸端側に設けた供給口に、前記バレル容器内の軸方向中央側へ張り出す多孔パイプを接続し、この多孔パイプから前記めっき液をバレル容器内へ供給するようにした請求項1乃至3のいずれかに記載のバレルめっき装置。A porous pipe projecting toward an axially central side in the barrel container is connected to a supply port provided on the shaft end side, and the plating solution is supplied from the porous pipe into the barrel container. 4. The barrel plating apparatus according to any one of 3 above. 両端を左右のフレームに支持されたバレル容器をめっき浴中で回転させて、バレル容器に投入されたばら状の被めっき物をめっきする電解めっき用のバレルめっき装置において、前記バレル容器を、その軸方向に垂直な分割面により少なくとも1箇所で分割して、この分割した分割面間に陰極電源へ接続されるリング状の電極板を挟み込み、このリング状電極板の内径端を、前記バレル容器の内径面からわずかに突出させたことを特徴とするバレルめっき装置。In a barrel plating apparatus for electroplating, in which a barrel container supported at both ends by left and right frames is rotated in a plating bath to plate a rose-shaped object to be plated, the barrel container is A ring-shaped electrode plate connected to a cathode power source is sandwiched between at least one portion by a split surface perpendicular to the axial direction, and an inner diameter end of the ring-shaped electrode plate is inserted into the barrel container. A barrel plating apparatus characterized by slightly projecting from the inner diameter surface of the plate. 前記バレル容器の内径面から突出させた電極板の内径端を、立ち上がり垂直壁のない凸断面とした請求項5に記載のバレルめっき装置。The barrel plating apparatus according to claim 5, wherein the inner diameter end of the electrode plate protruding from the inner diameter surface of the barrel container has a convex cross section without a rising vertical wall. 前記バレル容器を複数箇所で分割し、前記各分割面間に挟み込んだ電極板同士を、少なくとも1本の導線で接続した請求項5または6に記載のバレルめっき装置。The barrel plating apparatus according to claim 5 or 6, wherein the barrel container is divided at a plurality of locations, and electrode plates sandwiched between the divided surfaces are connected by at least one conductive wire. 前記電極板同士を接続する導線を、前記バレル容器の内壁面に軸方向へ沿わせた請求項7に記載のバレルめっき装置。The barrel plating apparatus according to claim 7, wherein a conductive wire connecting the electrode plates is axially aligned with an inner wall surface of the barrel container.
JP2003197302A 2003-07-15 2003-07-15 Barrel plating device Pending JP2005036249A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095143A (en) * 2006-10-11 2008-04-24 Kida Seiko Kk Barrel for plating
CN115318638A (en) * 2022-07-29 2022-11-11 河南农业大学 Screening, soil removing and cleaning machine for cyperus esculentus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008095143A (en) * 2006-10-11 2008-04-24 Kida Seiko Kk Barrel for plating
CN115318638A (en) * 2022-07-29 2022-11-11 河南农业大学 Screening, soil removing and cleaning machine for cyperus esculentus

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