JP2511499Y2 - Back electrode for sbot welding - Google Patents
Back electrode for sbot weldingInfo
- Publication number
- JP2511499Y2 JP2511499Y2 JP1990034276U JP3427690U JP2511499Y2 JP 2511499 Y2 JP2511499 Y2 JP 2511499Y2 JP 1990034276 U JP1990034276 U JP 1990034276U JP 3427690 U JP3427690 U JP 3427690U JP 2511499 Y2 JP2511499 Y2 JP 2511499Y2
- Authority
- JP
- Japan
- Prior art keywords
- back electrode
- tip
- work
- fixed
- arch surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〈産業上の利用分野〉 本考案は、スポット溶接に用いられるバック電極に関
するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a back electrode used for spot welding.
〈従来の技術〉 スポット溶接において、電極チップの打痕を防ぐため
に、銅等のバックバーをワークに当接し、このバックバ
ーを介して電極チップにより抵抗溶接している。<Prior Art> In spot welding, in order to prevent dents on the electrode tip, a back bar made of copper or the like is brought into contact with the work, and resistance welding is performed by the electrode tip via the back bar.
〈考案が解決しようとする課題〉 スポット溶接しようとするワークには、平面形状もあ
れば曲面形状のものがある。従って、従来では、ワーク
の形状に対応した形状のバックバーを製造しておき、ワ
ークの変更の都度、ワークと対応する形状のバックバー
と交換する作業を必要としていた。<Problems to be solved by the invention> Some workpieces to be spot-welded have a planar shape and a curved shape. Therefore, conventionally, it is necessary to manufacture a back bar having a shape corresponding to the shape of the work and replace the back bar with a shape corresponding to the work each time the work is changed.
本考案の目的は、一つのバック電極でワークの形状に
追従変形して当接し、交換を不要としたバック電極を提
供することである。An object of the present invention is to provide a back electrode which does not need to be replaced because it deforms and abuts on the shape of the work piece with one back electrode.
〈課題を解決するための手段〉 上記の目的を達成するための本考案の構成要旨は、電
極チップが取付けられているシャンクにブラケットを絶
縁状態で固着し、このブラケットの両側に板バネを電極
チップと平行な軸線位置と傾倒位置とに姿勢変更可能に
ボルトによって固設し、複数枚のアーチ形電導材を両側
に隙間を形成して重ね合わせたバック電極プレートを前
記板バネ上に電極チップの先端とアーチ面との間に両者
が当接可能な隙間を有して固着したものである。<Means for Solving the Problems> The gist of the present invention for achieving the above object is to fix a bracket to a shank to which an electrode tip is attached in an insulating state, and to attach leaf springs to both sides of the bracket. A back electrode plate, which is fixed by bolts so that the posture can be changed between an axial line position parallel to the chip and a tilted position, and a plurality of arch-shaped conductive materials are stacked with gaps on both sides, is stacked on the leaf spring to form an electrode chip. It is fixed with a gap between the tip and the arch surface so that they can contact each other.
〈作用〉 上記の構成により、バック電極プレートのアーチ面に
ワークが当接し、加圧作用によってアーチ面が両側の隙
間並びに板バネにより弾性変形され、アーチ面がワーク
の形状に追従して当接すると共に、電極チップの先端に
当接して通電作用を行うものである。<Operation> With the above configuration, the work contacts the arch surface of the back electrode plate, the arch surface is elastically deformed by the gaps on both sides and the leaf springs by the pressure action, and the arch surface follows the shape of the work and contacts. At the same time, it is brought into contact with the tip of the electrode tip to perform an energizing action.
〈実施例〉 以下本考案の実施例を図面に基づいて説明する。第1
図及び第2図において、1はスポット溶接ガンのアー
ム、2は前記アーム1にアダプタを介して取付けられて
いるシャンク、3は前記シャンク2に取付けられた電極
チップである。<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. First
In FIG. 2 and FIG. 2, 1 is an arm of the spot welding gun, 2 is a shank attached to the arm 1 via an adapter, and 3 is an electrode tip attached to the shank 2.
本考案は、前記シャンク2に絶縁パイプ5を介在して
ブラケット4をボルト6によって締付固定し、このブラ
ケット4の両側に板バネ7をシャンク2並びに電極チッ
プ3と平行な軸線で延在させると共に、ボルト8によっ
て傾倒可能に固設する。In the present invention, the bracket 4 is tightened and fixed by bolts 6 with the insulating pipe 5 interposed in the shank 2, and the leaf springs 7 extend on both sides of the bracket 4 along an axis parallel to the shank 2 and the electrode tip 3. At the same time, the bolt 8 is fixed so that it can be tilted.
さらに、前記板バネ7上にはバック電極プレート9が
固着される。このバック電極プレート9は複数枚の銅板
11の重合体によって形成され、第3図でも明らかなよう
に、アーチ面10を有し、両側に隙間12を形成して重ね合
わされ、電極チップ3の先端とアーチ面10との間に両者
が当接可能な隙間を有して板バネ7に固着されている。Further, a back electrode plate 9 is fixed on the leaf spring 7. This back electrode plate 9 is a plurality of copper plates
As shown in FIG. 3, it is formed by the polymer of 11 and has an arch surface 10 and is overlapped with a gap 12 formed on both sides, and both are formed between the tip of the electrode tip 3 and the arch surface 10. It is fixed to the leaf spring 7 with a gap that can be abutted.
本考案は上記の通りの構造であるから、アーム1に加
圧作用が付与されていないときには第1図で示すよう
に、電極チップ3の先端とバック電極プレート9のアー
チ面10とは離間している。Since the present invention has the above-described structure, the tip of the electrode tip 3 and the arch surface 10 of the back electrode plate 9 are separated from each other as shown in FIG. 1 when no pressure is applied to the arm 1. ing.
しかしながら、図示省略しているワークをアーム1で
挾み、アーム1を加圧作動すると、バック電極プレート
9のアーチ面10がワークに当接し、アーチ面10がワーク
形状に倣って弾性変形してワーク形状に追従する。この
ときのアーチ面10の弾性変形は両側の隙間12によって吸
収する。However, when a work (not shown) is sandwiched by the arm 1 and the arm 1 is pressed, the arch surface 10 of the back electrode plate 9 comes into contact with the work, and the arch surface 10 elastically deforms following the shape of the work. Follow the work shape. The elastic deformation of the arch surface 10 at this time is absorbed by the gaps 12 on both sides.
このアーチ面10の弾性変形と同時にアーム1の加圧力
は板バネ7にも作用され、板バネ7が撓んでバック電極
プレート9のアーチ面10が電極チップ3に当接し、バッ
ク電極プレート9に通電し、ワークをスポット溶接す
る。Simultaneously with the elastic deformation of the arch surface 10, the pressing force of the arm 1 is also applied to the leaf spring 7, and the leaf spring 7 bends so that the arch surface 10 of the back electrode plate 9 comes into contact with the electrode tip 3 and the back electrode plate 9 is contacted. Energize and spot weld the work.
また、電極チップ3の交換及び研磨時には、第2図で
示すように、ボルト8を緩めて板バネ7を傾倒させるこ
とにより、容易に交換、研磨作業が得られる。Further, at the time of exchanging and polishing the electrode tip 3, as shown in FIG. 2, by loosening the bolt 8 and tilting the leaf spring 7, it is possible to easily perform the exchanging and polishing work.
〈考案の効果〉 以上のように本考案によると、電極チップが取付けら
れているシャンクにブラケットを絶縁状態で固着し、こ
のブラケットの両側に板バネを電極チップと平行な軸線
位置と傾倒位置とに姿勢変更可能にボルトによって固設
し、複数枚のアーチ形電導材を両側に隙間を形成して重
ね合せたバック電極プレートを前記板バネ上に電極チッ
プの先端とアーチ面との間に両者が当接可能な隙間を有
して固着した構成であるから、バック電極プレートのア
ーチ面にワークを当接したときに、重ね合わせたバック
電極プレートの両側に形成している隙間によってアーチ
面の弾性変型を吸収しワークの形状に応じて追従変形し
てワークと密接した状態を確保するため、良好な通電が
得られ、かつ一つのバック電極で各種形状のワークに対
応させることができ、ワークの変更によるバック電極の
交換を不要とし、作業能率を向上する。<Effects of the Invention> As described above, according to the present invention, the bracket is fixed to the shank to which the electrode tip is attached in an insulated state, and the leaf springs are provided on both sides of the bracket in the axial position parallel to the electrode tip and the tilted position. The back electrode plate is fixed by bolts so that the posture can be changed, and a plurality of arch-shaped conductive materials are superposed on each other with a gap formed on both sides.The back electrode plate is placed on the leaf spring between the tip of the electrode tip and the arch surface. Is fixed so that there is a gap in which the arch surface of the back electrode plate can be brought into contact with the arch surface of the back electrode plate. It absorbs the elastic deformation and deforms following the work according to the shape of the work to ensure a state of close contact with the work, so good current can be obtained and one back electrode can be used for various work shapes. It is possible to improve the work efficiency by eliminating the need to replace the back electrode due to the change of the work.
また、バック電極プレートは板バネに支持されている
ため、バック電極プレートのアーチ面にワークを当接し
たときに、板バネの撓み作用によってバック電極プレー
トのアーチ面との当接を確実にし、前記重ね合わせたバ
ック電極プレートの両側に形成している隙間とによって
ワークとの密接効果が相乗的に得られる。Further, since the back electrode plate is supported by the leaf spring, when the workpiece is brought into contact with the arch surface of the back electrode plate, the bending action of the leaf spring ensures the contact with the arch surface of the back electrode plate. Due to the gaps formed on both sides of the back electrode plates which are overlapped with each other, the close contact effect with the work is synergistically obtained.
さらに、板バネを傾倒することにより、バック電極プ
レートが電極チップから離間するため、電極チップの交
換、研磨作業が容易に得られる。Further, by tilting the leaf spring, the back electrode plate is separated from the electrode tip, so that replacement and polishing work of the electrode tip can be easily obtained.
第1図は本考案の側面図、第2図は正面図、第3図は斜
視図である。 1…アーム、2…シャンク、3…電極チップ、4…ブラ
ケット、7…板バネ、9…バック電極プレート、10…ア
ーチ面、11…銅板、12…隙間。1 is a side view of the present invention, FIG. 2 is a front view, and FIG. 3 is a perspective view. 1 ... Arm, 2 ... Shank, 3 ... Electrode tip, 4 ... Bracket, 7 ... Leaf spring, 9 ... Back electrode plate, 10 ... Arch surface, 11 ... Copper plate, 12 ... Gap.
Claims (1)
ブラケットを絶縁状態で固着し、このブラケットの両側
に板バネを電極チップと平行な軸線位置と傾倒位置とに
姿勢変更可能にボルトによって固設し、複数枚のアーチ
形電導材を両側に隙間を形成して重ね合わせたバック電
極プレートを前記板バネ上に電極チップの先端とアーチ
面との間に両者が当接可能な隙間を有して固着したこと
を特徴とするスポット溶接のバック電極。1. A bracket is fixed in an insulated state to a shank to which an electrode tip is attached, and leaf springs are fixed on both sides of the bracket by bolts so that the posture can be changed between an axial position parallel to the electrode tip and a tilted position. The back electrode plate, which is formed by stacking a plurality of arch-shaped conductive materials with gaps on both sides, is provided on the leaf spring with a gap between the tip of the electrode tip and the arch surface so that they can contact each other. A spot welding back electrode characterized by being firmly fixed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990034276U JP2511499Y2 (en) | 1990-04-02 | 1990-04-02 | Back electrode for sbot welding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990034276U JP2511499Y2 (en) | 1990-04-02 | 1990-04-02 | Back electrode for sbot welding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03126287U JPH03126287U (en) | 1991-12-19 |
JP2511499Y2 true JP2511499Y2 (en) | 1996-09-25 |
Family
ID=31538607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990034276U Expired - Lifetime JP2511499Y2 (en) | 1990-04-02 | 1990-04-02 | Back electrode for sbot welding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2511499Y2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4951211B2 (en) * | 2005-04-27 | 2012-06-13 | 本田技研工業株式会社 | Backbar support structure for welding |
JP4948638B2 (en) * | 2010-10-15 | 2012-06-06 | 三菱電機株式会社 | Water disinfection device and humidification device |
KR102353882B1 (en) * | 2021-08-23 | 2022-01-24 | (주)대성사 | Spot welding method for curved sections |
KR102353881B1 (en) * | 2021-08-23 | 2022-01-24 | (주)대성사 | Spot welding device for curved sections |
KR102471648B1 (en) * | 2022-05-26 | 2022-11-29 | 주식회사 대성사 | Curved section welding equipment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5445387U (en) * | 1977-09-05 | 1979-03-29 | ||
JPH0444315Y2 (en) * | 1986-12-17 | 1992-10-19 |
-
1990
- 1990-04-02 JP JP1990034276U patent/JP2511499Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH03126287U (en) | 1991-12-19 |
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