JP2501699B2 - Resistance welding equipment - Google Patents
Resistance welding equipmentInfo
- Publication number
- JP2501699B2 JP2501699B2 JP3344773A JP34477391A JP2501699B2 JP 2501699 B2 JP2501699 B2 JP 2501699B2 JP 3344773 A JP3344773 A JP 3344773A JP 34477391 A JP34477391 A JP 34477391A JP 2501699 B2 JP2501699 B2 JP 2501699B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- shank
- resistance welding
- tip
- welding
- 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 - Fee Related
Links
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- Resistance Welding (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気抵抗溶接に関わる抵
抗溶接装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resistance welding apparatus related to electric resistance welding.
【０００２】[0002]
【従来の技術】スポット溶接などの電気抵抗溶接では、
対向する上下一対の電極で被溶接物を押圧し所定の時
間、電流を通じて溶接を行うもので広く利用されてい
る。この場合、図３に示すように電極チップ１，２は直
接電極ホルダー５，６に固着される場合と、シャンク
３，４を介して電極ホルダーに固着される場合とがあ
り、電極ホルダー５，６はアーム７，８に固着されて使
用される。このような電極周辺の構成で溶接する場合、
被溶接材料が一般の冷延鋼板であれば充分な連続打点性
（電極寿命）を示すが、亜鉛めっき鋼板を始めとする各
種表面処理鋼板、アルミニウムおよびマグネシウムなど
の溶接では、打点数の増加に伴い、銅系材料からなる電
極チップと鋼板のめっき金属あるいはアルミニウムまた
はマグネシウムとが合金化して、電極先端部（鋼板との
接触部）が損耗・拡大する。このため電流密度が低下し
所定のナゲットが形成されなくなり、電極チップのドレ
ッシングあるいは交換までの時間（打点数）を短縮せざ
るを得なくなることから、生産性の低下が余儀なくされ
ていた。2. Description of the Related Art In electric resistance welding such as spot welding,
It is widely used in which a pair of upper and lower electrodes facing each other presses an object to be welded and performs welding for a predetermined time by applying an electric current. In this case, as shown in FIG. 3, the electrode chips 1 and 2 may be directly fixed to the electrode holders 5 and 6, or may be fixed to the electrode holders via the shanks 3 and 4. 6 is used by being fixed to the arms 7 and 8. When welding with such a configuration around the electrode,
If the material to be welded is a general cold-rolled steel sheet, it shows sufficient continuous spotting property (electrode life). Along with this, the electrode tip made of a copper-based material and the plated metal of the steel sheet or aluminum or magnesium are alloyed, and the tip of the electrode (the contact portion with the steel sheet) is worn and expanded. For this reason, the current density is lowered, a predetermined nugget is not formed, and the time (number of dots) until the dressing or replacement of the electrode tip has to be shortened, so that the productivity is inevitably lowered.
【０００３】これら難点を解消する手段として、例えば
特開昭６１−２９３６７９号公報、実開昭６１−６７９
７８号公報などが知られているが、この装置の場合電極
加圧軸と直角方向に電極回転軸を設け、この回転軸の周
囲に複数本の電極チップを埋設あるいはリング状電極を
取り付け、これを間欠的に回転させて溶接するものであ
るが、これらは設備的に大がかりなものとなり、さらに
その構造上、被溶接物の形状にかなりの制約が生じるな
どの難点があった。As means for solving these difficulties, for example, JP-A-61-293679 and JP-A-61-679.
In this device, an electrode rotating shaft is provided in a direction perpendicular to the electrode pressing shaft, and a plurality of electrode chips are embedded or ring-shaped electrodes are mounted around this rotating shaft. Welding is performed by intermittently rotating, but these are large in terms of equipment, and due to their structure, there are drawbacks such that the shape of the object to be welded is considerably restricted.
【０００４】従来のこのような溶接方法および装置の問
題点を解消するために、めっき鋼板などの溶接において
連続打点性の高い抵抗溶接方法とその装置が特開平２−
２２０７８４号公報によって開示された。その構造を図
４に示す。図４は上記実施例の回動機能を有する電極部
特にシャンク３の態様例を示す。電極チップ１は回動電
極ホルダー（Ａシャンク）１３に固着され、該Ａシャン
クは電極部の中心軸１１を回転軸として回動させるため
連結スリーブ１６を介して、回動しない固定電極ホルダ
ー（Ｂシャンク）１４と連結され、Ｂシャンクは電極ホ
ルダー５に固着される。電極部の中心部には、その先端
が電極チップ１内で開口している水冷パイプ１５が配設
されているが、該水冷パイプ１５を通じて電極チップ１
を冷却する水が外部に漏洩しないように、Ａシャンク１
３とＢシャンク１４の連結部をＯ（オー）リング１７で
シールされている。またＡシャンク１３と連結スリーブ
１６とは回転、摺動するため充分な通電性を確保出来る
ような連結状態になっている。そして、電極チップ１お
よびＡシャンク１３を回動させるため、Ａシャンク１３
にウオームホイールＨを取り付けウオームＷでＡシャン
ク１３を回転させている。In order to solve the problems of the conventional welding method and apparatus, there is disclosed a resistance welding method and apparatus having a high continuous spotting property in the welding of plated steel sheets and the like.
No. 220784. The structure is shown in FIG. FIG. 4 shows an example of an embodiment of the electrode part having a rotating function, particularly the shank 3, of the above embodiment. The electrode tip 1 is fixed to a rotating electrode holder (A shank) 13, and the A shank rotates through a central sleeve 11 of the electrode portion as a rotation axis, and a fixed electrode holder (B) that does not rotate via a connecting sleeve 16. B shank is fixed to the electrode holder 5. At the center of the electrode portion, a water-cooled pipe 15 is provided, the tip of which is open in the electrode chip 1, and the electrode chip 1 is provided through the water-cooled pipe 15.
A shank 1 so that the water that cools the water does not leak outside
The connecting portion between the 3 and the B shank 14 is sealed with an O (o) ring 17. Further, since the A shank 13 and the connecting sleeve 16 rotate and slide, they are in a connected state in which sufficient electric conductivity can be secured. Then, in order to rotate the electrode tip 1 and the A shank 13, the A shank 13
A worm wheel H is attached to the worm wheel W to rotate the A shank 13.
【０００５】この装置は以上の構造になっているので該
装置内に取付けられた駆動装置によりＡシャンク１３が
回動し、これに伴い電極チップが一定角度回転して新し
い接触面（通電面）を形成し、順次この動作を繰返えす
ことにより接触面を次々に移動させ、電極の接触回数
（連続打点数）を飛躍的に向上することができる効果を
有している。Since this device has the above-described structure, the A shank 13 is rotated by the driving device mounted in the device, and the electrode tip is rotated by a certain angle accordingly, and a new contact surface (current-carrying surface) is obtained. By forming this, and sequentially repeating this operation, the contact surface is moved one after another, and the number of contact of electrodes (the number of continuous dots) can be dramatically improved.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記装
置は図３の装置と同様に上下のアーム７，８にかつ、前
記電極部中心軸１１が電極加圧軸１０に対し傾斜した状
態で装着されているので、被溶接材のコーナー部や狭い
空間で溶接する場合にはその溶接作業が困難であった。However, similar to the device shown in FIG. 3, the above device is mounted on the upper and lower arms 7 and 8 with the central shaft 11 of the electrode portion tilted with respect to the electrode pressing shaft 10. Therefore, the welding work is difficult when welding is performed at the corners of the material to be welded or in a narrow space.
【０００７】本発明はかゝる溶接作業を容易に行うこと
ができる抵抗溶接装置を提供するものである。The present invention provides a resistance welding device which can easily perform such welding work.
【０００８】[0008]
【課題を解決するための手段】本発明は上記目的を達成
するために、対向する一対の電極部の一方の電極部中心
軸を電極加圧軸に対して傾斜した状態で配設するととも
に、他方の電極部の電極部中心軸を電極加圧軸に対し直
角位置に配設し、さらに上記一対の電極部の電極チップ
をそれぞれ回動自在に設けたことを特徴とする抵抗溶接
装置を提供するものである。In order to achieve the above-mentioned object, the present invention is arranged such that the central axis of one electrode portion of a pair of opposing electrode portions is inclined with respect to the electrode pressing axis, and A resistance welding apparatus characterized in that the center axis of an electrode portion of the other electrode portion is disposed at a right angle to the electrode pressing axis, and further the electrode tips of the pair of electrode portions are rotatably provided respectively. To do.
【０００９】以下図面に従い、本発明を詳細に説明す
る。The present invention will be described in detail below with reference to the drawings.
【００１０】[0010]
【実施例】図１に本発明の一実施態様を示す。Ｃ型枠体
２０の上部アーム２２に上下動可能な連結部２１を介し
て通電アーム１９を設け、該通電アーム１９に電極部Ｄ
1 を、その中心軸１１が被溶接物Ｓに対する電極加圧軸
１０に対して所定の角度θで傾斜する状態で固設する。
前記電極部Ｄ1 は通電アーム１９に固設された固定電極
ホルダー（Ｂシャンク）１４、連結スリーブ１６を介し
て回動自在に設けられた回動電極ホルダー（Ａシャン
ク）１３、該Ａシャンク１３に回動を伝達する回動伝達
部１８及び前記Ａシャンク１３の先端に設けられた電極
チップ１から構成されている。前記上部アーム２２の上
部にはトランス２８が設けられ通電アーム１９および下
記で説明する電極部Ｄ2 に溶接電流を流す。FIG. 1 shows an embodiment of the present invention. The upper arm 22 of the C-shaped frame body 20 is provided with a conducting arm 19 via a vertically movable connecting portion 21, and the conducting arm 19 is provided with an electrode portion D.
1 is fixed so that its central axis 11 is inclined at a predetermined angle θ with respect to the electrode pressing shaft 10 for the workpiece S.
The electrode portion D 1 includes a fixed electrode holder (B shank) 14 fixed to the energizing arm 19, a rotating electrode holder (A shank) 13 rotatably provided via a connecting sleeve 16, and the A shank 13 It is composed of a rotation transmitting portion 18 for transmitting the rotation and an electrode tip 1 provided at the tip of the A shank 13. A transformer 28 is provided above the upper arm 22 and a welding current is passed through the energizing arm 19 and the electrode portion D 2 described below.
【００１１】一方、下部アーム２３には電極部Ｄ2 がそ
の中心軸１２を電極加圧軸１０に対して直角になるよう
に水平状態で設けられている。すなわち、回動電極ホル
ダー（Ａシャンク）２５が下部アーム２３の端部に連結
スリーブ２７を介して回動自在に設けられ、また該Ａシ
ャンク２５に回動伝達部２６が固設され、さらに該Ａシ
ャンク２５先端に棒状電極チップ２４が設けられてい
る。On the other hand, the lower arm 23 is provided with an electrode portion D 2 in a horizontal state such that its central axis 12 is perpendicular to the electrode pressing axis 10. That is, a rotary electrode holder (A shank) 25 is rotatably provided at the end of the lower arm 23 via a connecting sleeve 27, and a rotary transmission unit 26 is fixedly mounted on the A shank 25. A rod-shaped electrode tip 24 is provided at the tip of the A shank 25.
【００１２】前記電極チップ１はその先端が半径Ｒの球
面状に構成され、また前記棒状電極チップ２４は円柱ま
たは４〜８角、特に６〜８角の角柱で構成されているの
で、抵抗溶接を行う場合は電極チップ１の球面と棒状電
極チップ２４の側面とが用いられる。以上の構造からな
る装置によって図１に示す被溶接材料Ｓを溶接する場合
を説明すると、被溶接材料Ｓの溶接部上部に電極部Ｄ1
を配置し、また下部の狭い空間に電極部Ｄ2 を挿入し
て、両部の電極チップ１，２４、Ａシャンク１３，２５
を電極回転軸１１，１２を回転軸として矢印Ｘ及びＹの
方向にそれぞれ間欠的に所定角度ずつ回動させて、それ
ぞれの新しい面において抵抗溶接を行う。Since the tip of the electrode tip 1 is formed in a spherical shape having a radius R, and the rod-shaped electrode tip 24 is formed of a cylinder or a prism of 4 to 8 angles, especially 6 to 8 angles, resistance welding is performed. When performing, the spherical surface of the electrode tip 1 and the side surface of the rod-shaped electrode tip 24 are used. Describing the case of welding the welded material S shown in FIG. 1 by the above consist of structural unit, the electrode portion D 1 to weld the top of the weld material S
And the electrode part D 2 is inserted in the narrow space at the bottom, and the electrode tips 1 and 24 of both parts and the A shank 13 and 25 are inserted.
Is intermittently rotated by a predetermined angle in the directions of arrows X and Y with the electrode rotating shafts 11 and 12 as rotating shafts, and resistance welding is performed on each new surface.
【００１３】上記Ａシャンク１３，２５を回動するとき
は、図１で示すように回動伝達部１８としてスパナかけ
を用い、かつ移動スパナ（図示せず）を該スパナかけに
装着して回動させる。あるいは、スパナかけをＡシャン
クに設けない場合は例えばＡシャンク外周部を回動伝達
部として、押圧式レンチなどでＡシャンク外周部をつか
み、所定角度を回転するようにしてもよい。When rotating the A shanks 13 and 25, a spanner is used as the rotation transmitting portion 18 as shown in FIG. 1, and a movable spanner (not shown) is attached to the spanner and rotated. To move. Alternatively, when the spanner hook is not provided on the A shank, for example, the A shank outer peripheral portion may be used as the rotation transmitting portion, and the A shank outer peripheral portion may be grasped by a pressing wrench or the like and rotated by a predetermined angle.
【００１４】本発明の他の実施例を図２に示す。溶接機
台２９の上部アーム３０に上下動可能な連結部３１を介
して通電アーム３２を配設し、該通電アーム３２に所定
の傾斜角度で固定電極ホルダー１４（Ｂシャンク）を設
ける。Ｂシャンク１４の内部には、一端に球面状電極チ
ップ１を、他端にギヤボックス３５をそれぞれ設けた回
動電極ホルダー１３（Ａシャンク）が嵌入されている。
一方、下部アーム３３には通電アーム３４が載置され、
該アーム３４に固定電極ホルダー２５ａ（Ｂシャンク）
が水平状態で設けられ、かつ該Ｂシャンク２５ａ内に、
一端に棒状電極チップ２４を、他端にギヤボックス３５
をそれぞれ設けた回動電極ホルダー２５（Ａシャンク）
が嵌入されている。ギヤボックス３５，３５は例えばウ
ォームギヤなどが装備され、かゝるウォームギヤはコン
トローラー３７、パルスモーター３８およびトルクコン
バーター３９からフレキシブルワイアー３６，３６を通
じて回転させられる。Another embodiment of the present invention is shown in FIG. An energizing arm 32 is disposed on an upper arm 30 of the welding machine base 29 via a vertically movable connecting portion 31, and the energizing arm 32 is provided with a fixed electrode holder 14 (B shank) at a predetermined inclination angle. A rotating electrode holder 13 (A shank) having a spherical electrode tip 1 at one end and a gear box 35 at the other end is fitted inside the B shank 14.
On the other hand, an energizing arm 34 is placed on the lower arm 33,
A fixed electrode holder 25a (B shank) is attached to the arm 34.
Is provided in a horizontal state, and in the B shank 25a,
The rod-shaped electrode tip 24 at one end and the gear box 35 at the other end
Rotating electrode holder 25 (A shank)
Has been inserted. The gear boxes 35, 35 are equipped with, for example, worm gears, and such worm gears are rotated from the controller 37, the pulse motor 38, and the torque converter 39 through the flexible wires 36, 36.
【００１５】かゝる装置で抵抗溶接する場合は、パルス
モーター３８の駆動によってウォームギヤを回転し、か
つコントローラー３７によりその回転角、回転頻度を調
整して所望の角度および頻度でＡシャンク１３，２５を
回動する。これにより電極チップ１の球面と電極チップ
２４の側面で構成する接触部を順次変化（移動）させ、
常に新しい接触部で抵抗溶接することができる。When performing resistance welding with such a device, the worm gear is rotated by driving the pulse motor 38, and the rotation angle and rotation frequency are adjusted by the controller 37 to adjust the A shank 13, 25 at a desired angle and frequency. Rotate. Thereby, the contact portion formed by the spherical surface of the electrode tip 1 and the side surface of the electrode tip 24 is sequentially changed (moved),
Resistance welding can always be done with new contacts.
【００１６】[0016]
【発明の効果】以上説明したように、本発明によれば、
被溶接材料の隅部または狭い空間での抵抗溶接に適用し
て従来の溶接作業と何ら変わることなく溶接でき、しか
も打点数の増加に伴う電極の損耗は接触部が移動しつゝ
整形されるため確実な大きさのナゲットを形成すること
ができるとともに従来溶接法に比べ連続打点数を飛躍的
に増加せしめることができるので、産業利用上多大な効
果をもたらすものである。As described above, according to the present invention,
It can be applied to resistance welding in the corners or narrow spaces of the material to be welded and can be welded without any change from conventional welding work, and the wear of the electrode due to the increase in the number of spots will cause the contact part to move and be shaped. Therefore, a nugget having a certain size can be formed, and the number of continuous welding points can be dramatically increased as compared with the conventional welding method, which brings about a great effect in industrial use.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例を示す概略正面図である。FIG. 1 is a schematic front view showing one embodiment of the present invention.
【図２】本発明の他の実施例を示す概略正面図である。FIG. 2 is a schematic front view showing another embodiment of the present invention.
【図３】従来の電極部周辺を示す正面図である。FIG. 3 is a front view showing the periphery of a conventional electrode portion.
【図４】従来のシャンク部分の一部断面正面図である。FIG. 4 is a partially sectional front view of a conventional shank portion.
１，２…電極チップ ３，４…シャンク ５，６…電極ホルダー ７，８…アーム ９…加圧軸 １０…電極加圧軸 １１，１２…電極部中心軸 １３…回動電極ホルダー（Ａシャンク） １４…固定電極ホルダー（Ｂシャンク） １５…水冷パイプ １６…連結スリーブ １７…オーリング １８，２６…回動伝達部 １９…通電アーム ２０…Ｃ型枠体 ２１…連結部 ２２…上部アーム ２３…下部アーム ２４…電極チップ ２５…回動電極ホルダー ２７…連結スリーブ ２８…トランス ２９…溶接機台 ３０…上部アーム ３１…連結部 ３２，３４…通電アーム ３３…下部アーム ３５…ギヤボックス ３６…フレキシブルワイアー ３７…コントローラー ３８…パルスモーター ３９…トルクコンバーター 1, 2 ... Electrode tip 3, 4 ... Shank 5, 6 ... Electrode holder 7, 8 ... Arm 9 ... Pressing shaft 10 ... Electrode pressing shaft 11, 12 ... Electrode center shaft 13 ... Rotating electrode holder (A shank) ) 14 ... Fixed electrode holder (B shank) 15 ... Water cooling pipe 16 ... Connection sleeve 17 ... O-ring 18, 26 ... Rotation transmission part 19 ... Energizing arm 20 ... C-frame 21 ... Connection part 22 ... Upper arm 23 ... Lower arm 24 ... Electrode tip 25 ... Rotating electrode holder 27 ... Connecting sleeve 28 ... Transformer 29 ... Welding machine base 30 ... Upper arm 31 ... Connecting portion 32, 34 ... Energizing arm 33 ... Lower arm 35 ... Gear box 36 ... Flexible wire 37 ... Controller 38 ... Pulse Motor 39 ... Torque Converter
Claims (4)
心軸を電極加圧軸に対して傾斜した状態で配設するとと
もに、他方の電極部の電極部中心軸を電極加圧軸に対し
直角位置に配設し、さらに上記一対の電極部の電極チッ
プを電極部中心軸を回転軸としてそれぞれ回動自在に設
けたことを特徴とする抵抗溶接装置。1. An electrode center axis of one of a pair of opposing electrode sections is disposed in a state of being inclined with respect to an electrode pressure axis, and an electrode center axis of the other electrode section is used as an electrode pressure axis. A resistance welding device, wherein the resistance welding device is arranged at right angles to each other, and further, the electrode tips of the pair of electrode portions are provided so as to be rotatable about a center axis of the electrode portion as a rotation axis .
に回転伝達部を設けた請求項１記載の装置。2. The device according to claim 1, wherein the electrode holder holding the electrode tip is provided with a rotation transmitting portion.
記回転伝達部を回転せしめる請求項２記載の装置。3. The device according to claim 2, wherein the rotation transmission section is rotated by a drive mechanism in the system of the electrode section.
記回転伝達部を回転せしめる請求項２記載の装置。4. The apparatus according to claim 2, wherein the rotation transmission section is rotated by a drive mechanism outside the system of the electrode section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3344773A JP2501699B2 (en) | 1991-12-26 | 1991-12-26 | Resistance welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3344773A JP2501699B2 (en) | 1991-12-26 | 1991-12-26 | Resistance welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05177359A JPH05177359A (en) | 1993-07-20 |
| JP2501699B2 true JP2501699B2 (en) | 1996-05-29 |
Family
ID=18371870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3344773A Expired - Fee Related JP2501699B2 (en) | 1991-12-26 | 1991-12-26 | Resistance welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501699B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6544548B1 (en) * | 1999-09-13 | 2003-04-08 | Keraplast Technologies, Ltd. | Keratin-based powders and hydrogel for pharmaceutical applications |
| JP4989123B2 (en) * | 2006-06-26 | 2012-08-01 | 愛知産業株式会社 | Rotatable spot welder |
| CN115502533A (en) * | 2022-09-02 | 2022-12-23 | 格力电器(南京)有限公司 | Welding electrode structure and welding equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5757349A (en) * | 1980-09-24 | 1982-04-06 | Nec Corp | Microprogram control type data processor |
| JPH0681674B2 (en) * | 1989-03-09 | 1994-10-19 | 新日本製鐵株式会社 | Resistance welding method and apparatus |
| JP2745666B2 (en) * | 1989-04-18 | 1998-04-28 | 日産自動車株式会社 | Spot welding equipment |
-
1991
- 1991-12-26 JP JP3344773A patent/JP2501699B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05177359A (en) | 1993-07-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960116 |
|
| LAPS | Cancellation because of no payment of annual fees |