JP2525730Y2 - Indirect welding equipment - Google Patents
Indirect welding equipmentInfo
- Publication number
- JP2525730Y2 JP2525730Y2 JP1991009694U JP969491U JP2525730Y2 JP 2525730 Y2 JP2525730 Y2 JP 2525730Y2 JP 1991009694 U JP1991009694 U JP 1991009694U JP 969491 U JP969491 U JP 969491U JP 2525730 Y2 JP2525730 Y2 JP 2525730Y2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- work
- power supply
- arm
- clamp
- 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
【０００１】[0001]
【産業上の利用分野】本考案は、車両用ドアの内板と外
板の溶接等に用いられるインダイレクト式の溶接装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indirect welding device used for welding an inner plate and an outer plate of a vehicle door.
【０００２】[0002]
【従来の技術】従来、スポット溶接の給電方式として、
ダイレクト式とインダイレクト式とが知られている。ダ
イレクト式とは、溶接電源の一極と他極とに接続した１
対の電極間にワークの溶接箇所を挾んで通電する方式で
あり、一方、インダイレクト式とは、ワークの溶接箇所
の一側面を溶接電源の一極にした電極で加圧すると共
に、ワークの溶接箇所から離れた部分に当接する給電部
材を設けてこれを溶接電源の他極に接続し、前記電極と
給電部材との間に溶接箇所を介して溶接電流を流す方式
であり、溶接箇所の電極当接面をワークの裏面側にする
ことでワークをその表面に溶接痕が現われないように溶
接できる利点がある。2. Description of the Related Art Conventionally, as a power supply system for spot welding,
The direct type and the indirect type are known. The direct type is one that is connected to one pole of the welding power source and the other pole.
On the other hand, in the indirect type, one side of the welding point of the work is pressed with an electrode that has a single pole of the welding power source, and the work is welded. A power supply member is provided which is in contact with a portion distant from the location, is connected to the other electrode of the welding power source, and a welding current flows between the electrode and the power supply member via a welding location. By providing the contact surface on the back side of the work, there is an advantage that the work can be welded so that welding marks do not appear on the surface.
【０００３】従来、かかるインダイレクト式の溶接装置
において、前記給電部材は、ワークの溶接箇所から離れ
た部分の片面にシリンダ等で単純に押し合てるようにし
ている（実開昭６３−９０５８７号公報、特開昭６２−
８１２７６号公報参照）。Conventionally, in such an indirect type welding apparatus, the power supply member is simply pressed against one side of a portion of the work remote from the welding portion by a cylinder or the like (Japanese Utility Model Application Laid-Open No. 63-90587). Gazette, JP-A-62-2
81276).
【０００４】[0004]
【考案が解決しようとする課題】給電部材を上記の如く
ワークに押し合てると、給電部材の加圧力が大きい場合
にはワークが変形し、又加圧力が小さいと給電不良や電
蝕を生ずるため、加圧力の設定が非常に面倒になってい
る。本考案は、以上の点に鑑み、給電部材のワークに対
する加圧力を大きくしてもワークが変形しないように
し、加圧力不足による給電不良や電蝕を生ずることなく
良好な溶接を行い得られるようにしたインダイレクト式
溶接装置を提供することをその目的としている。When the power supply member is pressed against the work as described above, the work is deformed when the pressing force of the power supply member is large, and when the pressing force is small, poor power supply or electric corrosion occurs. Therefore, the setting of the pressing force is very troublesome. In view of the above points, the present invention prevents the work from being deformed even when the pressing force of the power supply member on the work is increased, so that good welding can be performed without causing power supply failure or electric corrosion due to insufficient pressing force. It is an object of the present invention to provide an indirect welding device.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成すべく、
本考案では、ワークの溶接箇所から離れた部分を溶接電
源の一方の極に接続する給電部材を備えるインダイレク
ト式溶接装置において、ワークの前記部分に当接するワ
ーク受けと該部分を該ワーク受けとの間に挾むクランプ
アームとを有するクランプ装置を設け、該ワーク受けと
該クランプアームとの少なくとも一方を前記給電部材に
構成すると共に、クランプ装置をワークの挟持方向にフ
ローティング自在に支持した。In order to achieve the above object,
According to the present invention, in an indirect welding apparatus including a power supply member that connects a portion of a work remote from a welding point to one pole of a welding power source, a work receiver that contacts the above-described portion of the work and the work receiver are connected to the work receiver. A clamp device having a clamp arm interposed therebetween , at least one of the work receiver and the clamp arm is configured as the power supply member, and the clamp device is moved in the direction of clamping the work.
Supported for free rotation .
【０００６】[0006]
【作用】ワークの溶接箇所から離れた部分がクランプ装
置のワーク受けとクランプアームとの間に挟まれ、クラ
ンプアームの加圧力を大きくしてもワークの変形はワー
ク受けによって阻止され、かくて加圧力を大きくしてワ
ークの前記部分の表裏両面にクランプアームとワーク受
けとを強く押し合て、給電部材たるこれらクランプアー
ムやワーク受けとワークとの間の接触抵抗を減少して給
電不良や電蝕の発生を防止できる。尚、ワークの寸法公
差によってワークの溶接部分と非溶接部分との位置関係
がワークの挟持方向にずれると、クランプアームによる
ワーク加圧時にワークが変形するおそれがあるが、本考
案ではクランプ装置がワークの挟持方向にフローティン
グ自在に支持されているため、ワーク加圧時にクランプ
装置がワークに倣って動き、ワークの変形を生ずること
なくワークを確実に加圧挟持できる。 [Function] A portion of the work remote from the welded portion is sandwiched between the work receiver of the clamp device and the clamp arm. Even if the pressing force of the clamp arm is increased, the deformation of the work is prevented by the work receiver. By increasing the pressure and strongly pressing the clamp arm and the work receiver on both the front and back surfaces of the work, the contact resistance between the clamp arm or the work receiver serving as the power supply member and the work is reduced, resulting in poor power supply or power failure. The occurrence of erosion can be prevented. The dimensions of the work
Positional relationship between welded and non-welded parts of work due to differences
Is displaced in the clamping direction of the workpiece,
The work may be deformed when the work is pressed.
In the plan, the clamp device floats in the
Can be clamped when the workpiece is pressed.
The device moves following the workpiece, causing the workpiece to deform.
The work can be securely clamped without pressure.
【０００７】[0007]
【実施例】図示の実施例は、車両用ドアの内板Ａと外板
Ｂとを内板の裏側に折返した外板のヘミング部Ｂ1とこ
れに重合する内板の凸部Ａ1とにおいて溶接するインダ
イレクト式の溶接装置に本考案を適用したもので、図１
に示すように、治具１に複数の支柱２を立設して、該各
支柱２の上端に絶縁材製の受座３を取付け、ヘミング加
工済みのドアを外板Ｂを下にした状態で、溶接箇所たる
前記凸部Ａ1の下側の外板部分が該受座３に着座するよ
うに治具１にセット自在とし、更に治具１の一側部に立
設したブラケット４の上端部にシリンダ５で上下方向に
揺動される揺動アーム６を取付け、該揺動アーム６の先
端にクランプ装置７を搭載して、該クランプ装置７によ
り内板Ａに形成した透窓Ａ2の開口縁部を上下から挾む
ようにした。これを詳述するに、該クランプ装置７は、
透窓Ａ2の開口縁部上面に当接可能なワーク受け８と、
該ワーク受け８に対しシリンダ９ａによって開閉動作さ
れるクランプアーム９とを備えるもので、該クランプ装
置７をその基部において前記揺動アーム６の先端にばね
１０を介してフローティング自在に支持させ、クランプ
アーム９を下方に開いた状態で揺動アーム６を上方の起
立位置から下方に揺動させることによりクランプアーム
９を透窓Ａ2内に振り込み、次いで該クランプアーム９
を上方に閉じ動作させて透窓Ａ2の開口縁部下面に当接
させ、この当接反力によりクランプ装置７をばね１０に
抗して下動させてワーク受け８を開口縁部上面に当接さ
せ、かくてワーク受け８とクランプアーム９との間に開
口縁部を挾むようにした。EXAMPLE shown, a convex portion A 1 of the plate to be polymerized to the hemming portion B 1 of the outer plate folding the inner plate A and the outer plate B of the vehicle door on the rear side of the inner plate Fig. 1 shows an indirect type welding device for welding in Fig. 1 applied to the present invention.
As shown in the figure, a plurality of columns 2 are erected on a jig 1, a receiving seat 3 made of an insulating material is attached to the upper end of each column 2, and a hemmed door is placed with its outer plate B down. in, the lower outer plate portion of the welding point serving the protrusion a 1 is freely set to the jig 1 to seat the receiving seat 3, the bracket 4 provided upright further on one side of the jig 1 A swing arm 6 that is vertically swingable by a cylinder 5 is attached to an upper end portion, and a clamp device 7 is mounted on a tip of the swing arm 6, and a transparent window A formed in the inner plate A by the clamp device 7. The edge of the opening of No. 2 was sandwiched from above and below. To explain this in detail, the clamping device 7
A work receiver 8 capable of contacting the upper surface of the opening edge of the transparent window A 2 ,
The work receiver 8 includes a clamp arm 9 that is opened and closed by a cylinder 9a. The clamp device 7 is supported at the base of the swinging arm 6 at the base thereof via a spring 10 so as to be able to float freely. transfer clamp arm 9 in Torumado a 2 by swinging the swing arm 6 from above the standing position downwardly with open arms 9 downwards, then the clamp arm 9
The upper closed is operated into contact with the opening edge lower surface of Torumado A 2, this abutment clamping device 7 by the reaction force is moved downward against the spring 10 the workpiece receiving 8 the opening edge top Thus, the edge of the opening was sandwiched between the work receiver 8 and the clamp arm 9.
【０００８】内板Ａと外板Ｂの溶接箇所は、ロボット等
に搭載した溶接ガン１０の上下１対のガンアーム１１，
１２により挾圧されるもので、上側のガンアーム１１の
先端の電極１１ａを前記凸部Ａ1の上側のヘミング部Ｂ1
と、下側のガンアーム１２の先端の電極１２ａを前記受
座３の下面とに当接させて、溶接箇所を外板Ｂ側に受座
３を介在させた状態で挾圧するようにした。そして、ト
ランスから成る溶接電源１３の一極、例えば正極１３ａ
を給電ケーブル１４とオンス銅板１１ｂとを介して上側
のガンアーム１１に接続すると共に、該電源１３の負極
１３ｂを給電ケーブル１５を介して前記クランプ装置７
に接続して、ワーク受け８とクランプアーム９とを溶接
箇所から離れたワークの部分に当接する給電部材に構成
し、これと上側のガンアーム１１の電極１１ａとの間
に、前記凸部Ａ1とヘミング部Ｂ1との重合部たる溶接箇
所と内板Ａとを介して溶接電流を流し、溶接箇所のイン
ダイレクト方式でのスポット溶接を行うようにした。こ
の場合、クランプアーム９の加圧力を大きくしても内板
Ａが変形することはなく、その結果クランプアーム９と
ワーク受け８とを内板Ａに強く圧接させて、加圧力不足
による給電不良や電蝕の発生を防止することができる。A welding portion between the inner plate A and the outer plate B is formed by a pair of upper and lower gun arms 11 of a welding gun 10 mounted on a robot or the like.
12 The present invention is not挾圧, upper hemming portion B 1 of the tip of the electrode 11a of the upper gun arm 11 the protrusion A 1
Then, the electrode 12a at the tip of the lower gun arm 12 is brought into contact with the lower surface of the seat 3, so that the welded portion is clamped on the outer plate B side with the seat 3 interposed. Then, one pole of a welding power source 13 composed of a transformer, for example, a positive pole 13a
Is connected to the upper gun arm 11 via the power supply cable 14 and the ounce copper plate 11b, and the negative electrode 13b of the power source 13 is connected to the clamp device 7 via the power supply cable 15.
, And the work receiver 8 and the clamp arm 9 are configured as a power supply member that abuts on a part of the work remote from the welding location, and the protrusion A 1 is provided between the work receiver 8 and the electrode 11a of the upper gun arm 11. a hemming unit B 1 flowing polymerization unit serving the welding current through the inner plate a and the welding portion between, and to perform spot welding at indirect manner welding point. In this case, even if the pressing force of the clamp arm 9 is increased, the inner plate A is not deformed. As a result, the clamp arm 9 and the work receiver 8 are strongly pressed against the inner plate A, and power supply failure due to insufficient pressing force. And the occurrence of electrolytic corrosion can be prevented.
【０００９】ところで、溶接ガン１０を治具１上に複数
の溶接箇所に対応させて複数個取付けても良いが、溶接
ガン１０をロボットの動作で各溶接箇所に順に移動させ
て溶接を行う場合、上記実施例の如く別置の溶接電源１
３から給電ケーブル１４を介して溶接ガン１０への給電
を行うと、給電ケーブル１４の取回しが面倒になる。こ
の場合、図２に示す実施例のように、溶接ガン１０に溶
接電源１３を搭載し、該電源１３の一極１３ａをオンス
銅板１１ｂを介して上側のガンアーム１１と、該電源１
３の他極１３ｂをオンス銅板１２ｂを介して下側のガン
アーム１２とに接続し、更に該下側のガンアーム１２の
電極１２ａを当接させる受座３の下面部分を導体３ａで
構成し、この導体３ａに給電ケーブル１５を介してクラ
ンプ装置７を接続すれば、溶接ガン１０に対する外部配
線が不要となり有利である。又、上記実施例では、クラ
ンプ装置７を１個としたが、クランプ装置７を複数個設
けて、各溶接箇所の溶接に際しその近傍のクランプ装置
７との間に溶接電流が流れるようにし、ワーク上の通電
距離を短くして通電ロスの低減を図ることも可能であ
る。By the way, a plurality of welding guns 10 may be mounted on the jig 1 corresponding to a plurality of welding locations. However, when welding is performed by sequentially moving the welding gun 10 to each welding location by a robot operation. , A separate welding power source 1 as in the above embodiment
When power is supplied to the welding gun 10 from the power supply 3 via the power supply cable 14, the handling of the power supply cable 14 becomes troublesome. In this case, as in the embodiment shown in FIG. 2, a welding power source 13 is mounted on the welding gun 10, and one pole 13 a of the power source 13 is connected to the upper gun arm 11 via the ounce copper plate 11 b and the power source 1.
The other pole 13b is connected to the lower gun arm 12 via the ounce copper plate 12b, and the lower surface of the seat 3 for contacting the electrode 12a of the lower gun arm 12 is formed of the conductor 3a. If the clamp device 7 is connected to the conductor 3a via the power supply cable 15, external wiring to the welding gun 10 becomes unnecessary, which is advantageous. In the above embodiment, one clamp device 7 is used. However, a plurality of clamp devices 7 are provided so that a welding current flows between the clamp devices 7 in the vicinity of each of the welding portions when welding is performed. It is also possible to reduce the conduction loss by shortening the above conduction distance.
【００１０】[0010]
【考案の効果】以上の説明から明らかなように、本考案
によれば、給電部材の加圧力によるワークの変形を生ず
ることがなく、給電部材をワークに強く圧接させて、加
圧力不足による給電不良や電蝕の発生を防止でき、良好
な溶接を行い得られる効果を有する。As is apparent from the above description, according to the present invention, the power supply member is strongly pressed against the work without causing deformation of the work due to the pressing force of the power supply member, and the power supply due to the insufficient pressurizing force. It is possible to prevent the occurrence of defects and electrolytic corrosion, and it has an effect that good welding can be performed.
【図１】 本案装置の一例の側面図FIG. 1 is a side view of an example of the device of the present invention.
【図２】 他の実施例の側面図FIG. 2 is a side view of another embodiment.
７ クランプ装置 ８ ワーク受け ９ クランプアーム １３ 溶接電源 １３ｂ クランプ装置に接続する電源電極 7 Clamping device 8 Work receiver 9 Clamp arm 13 Welding power supply 13b Power supply electrode connected to clamp device
Claims (1)
電源の一方の極に接続する給電部材を備えるインダイレ
クト式溶接装置において、ワークの前記部分に当接する
ワーク受けと該部分を該ワーク受けとの間に挾むクラン
プアームとを有するクランプ装置を設け、該ワーク受け
と該クランプアームとの少なくとも一方を前記給電部材
に構成すると共に、クランプ装置をワークの挟持方向に
フローティング自在に支持したことを特徴とするインダ
イレクト式溶接装置。1. An indirect welding apparatus comprising a power supply member for connecting a portion of a work distant from a welding portion to one pole of a welding power source, wherein the work receiving portion abuts the portion of the work and the portion receives the work receiving portion. a clamping device having a clamping arm sandwiching between provided with at least one of the said work receiving and the clamp arm constituting said feeding member, the clamping device the clamping direction of the workpiece and
An indirect welding device characterized by being supported in a free-floating manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991009694U JP2525730Y2 (en) | 1991-02-27 | 1991-02-27 | Indirect welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991009694U JP2525730Y2 (en) | 1991-02-27 | 1991-02-27 | Indirect welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04108978U JPH04108978U (en) | 1992-09-21 |
| JP2525730Y2 true JP2525730Y2 (en) | 1997-02-12 |
Family
ID=31899930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991009694U Expired - Lifetime JP2525730Y2 (en) | 1991-02-27 | 1991-02-27 | Indirect welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525730Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6468769B2 (en) * | 2014-09-17 | 2019-02-13 | ダイハツ工業株式会社 | Spot welding equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169684A (en) * | 1983-03-18 | 1984-09-25 | Nissan Motor Co Ltd | Spot welding device |
| FR2584213B1 (en) * | 1985-06-28 | 1994-03-11 | Thomson Csf | DEVICE FOR CALCULATING A SLIDING, SLIDING FOURIER TRANSFORM, AND ITS APPLICATION TO A RADAR SYSTEM. |
-
1991
- 1991-02-27 JP JP1991009694U patent/JP2525730Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04108978U (en) | 1992-09-21 |
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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: 19960723 |