JP3013425B2 - Flat plate seam welding equipment - Google Patents
Flat plate seam welding equipmentInfo
- Publication number
- JP3013425B2 JP3013425B2 JP2274067A JP27406790A JP3013425B2 JP 3013425 B2 JP3013425 B2 JP 3013425B2 JP 2274067 A JP2274067 A JP 2274067A JP 27406790 A JP27406790 A JP 27406790A JP 3013425 B2 JP3013425 B2 JP 3013425B2
- Authority
- JP
- Japan
- Prior art keywords
- clamp
- welded
- flat plate
- seam welding
- plate
- 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
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
- Resistance Welding (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、平板の被溶接材同士を僅かに重ね合わせ
て抵抗シーム溶接を行うための装置に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to an apparatus for performing resistance seam welding by slightly overlapping flat workpieces with each other.
［従来の技術］ シーム溶接は円板状の電極を回転させながら連続的に
点溶接を繰り返していく接合方法であり、これを利用し
て平板の板継ぎを行う場合には、平板被溶接材同士を僅
かに重ね合わせた状態でその重ね代を含む部分を電極で
圧し潰すようにして溶接を行うのが普通である。第２図
は例えば特公昭50−21426号公報に示された従来の平板
用シーム溶接装置の概略図である。図において、
（１），（２）は、接合すべき二つの平板被溶接材であ
り、（３），（４）は、これら二つの平板被溶接材
（１），（２）の重ね部に電流を流しながら押圧力を加
える輪転式の上下一対の電極である。溶接装置は、これ
ら電極（３），（４）と、それぞれの平板被溶接材
（１），（２）を所定位置に固定するためのクランプ装
置（５），（６）とから構成されている。各クランプ装
置（５），（６）は、各被溶接材（１），（２）の幅方
向に上下方向に配備されたフラットなクランプバー
（５′），（５″）；（６′），（６″）で挟み付ける
ようにして被溶接材（１），（２）を固定する。[Prior Art] Seam welding is a joining method in which spot welding is continuously repeated while rotating a disk-shaped electrode. Usually, welding is performed by squeezing the portion including the overlap margin with an electrode while slightly overlapping each other. FIG. 2 is a schematic view of a conventional flat plate seam welding apparatus disclosed in, for example, Japanese Patent Publication No. 50-21426. In the figure,
(1) and (2) are two flat plate-welded materials to be joined, and (3) and (4) are currents applied to the overlapping portion of these two flat-plate welded materials (1) and (2). It is a pair of upper and lower electrodes of a rotary type that applies a pressing force while flowing. The welding device is composed of these electrodes (3) and (4) and clamp devices (5) and (6) for fixing the respective flat workpieces (1) and (2) at predetermined positions. I have. Each of the clamp devices (5) and (6) is a flat clamp bar (5 '), (5 ") provided vertically in the width direction of each of the workpieces (1) and (2); ) And (6 ″) to fix the materials to be welded (1) and (2).
このようなシーム溶接装置を用い、通常は接合しよう
とする二つの平板被溶接材（１），（２）の接合部を板
厚の約1.0〜1.5倍の長さで重ね合わせてクランプ装置
（５），（６）により固定し、一方の平板被溶接材
（１）の重ね面でない面から他方の平板被溶接材（２）
の重ね面でない面へそれぞれの面に接触する電極
（３），（４）を通じて電流を流し、これら電極
（３），（４）を各平板被溶接材（１），（２）の幅方
向に互いに押圧力を加えながら転動させると、接合部が
圧し潰されながら溶接される。この場合、上記公報に記
載があるように、仕上がり状態で接合部の厚さが母材の
厚さにできるだけ近付くよう予め加工を施すこともある
が、通常の重ねシーム溶接では、溶接部の厚みは母材の
板厚の２倍近くになるのが普通である。そして、そのよ
うな重ねシーム溶接では、上記のように接合部を電極で
圧し潰したときに、各被溶接材の重ね面でない側の角部
が潰され、また、第２図のように互いの重ね面が斜めに
なる。この場合、被溶接材（１），（２）には互いの接
合部の重ね代が小さくなる方向へ逃がすような力が作用
する。そこで、上記のようにクランプ装置（５），
（６）を設け、被溶接材（１），（２）が互いに逃げる
ことによる重ね代の変化を最小限に抑えるようにしてい
る。Using such a seam welding device, a joining device of two flat workpieces (1) and (2) to be normally joined is overlapped by a length of about 1.0 to 1.5 times the thickness of the sheet and a clamping device ( 5), fixed by (6), from the non-overlapping surface of one plate-like workpiece (1) to the other plate-like workpiece (2)
An electric current is passed through the electrodes (3) and (4) that are in contact with the respective surfaces to the non-overlapping surfaces of the electrodes, and these electrodes (3) and (4) are applied in the width direction of each of the workpieces (1) and (2). Rolling while applying pressing force to each other, the joint is crushed and welded. In this case, as described in the above-mentioned publication, in the finished state, the joint may be pre-processed so that the thickness of the joint approaches the thickness of the base material as much as possible. Is usually about twice the thickness of the base material. In such lap seam welding, when the joints are crushed by the electrodes as described above, the corners of the non-overlapping surfaces of the materials to be welded are crushed, and as shown in FIG. The overlapping surface becomes oblique. In this case, a force acts on the materials to be welded (1) and (2) so as to escape in the direction in which the overlapping margin of the joints is reduced. Therefore, as described above, the clamp device (5),
(6) is provided so as to minimize the change in the overlap margin due to the materials to be welded (1) and (2) escaping from each other.
なお、関連する先行技術としては、管とフランジの溶
接のためのクランプ装置であってクランプ部の外側に硬
質ゴムを設けることによって管とフランジとの内径寸法
の目違い量を吸収するようにしたものが特開昭61−1269
96号公報に記載されている。また、不活性ガスアーク溶
接において溶接治具とワークとの間に非金属の中間物を
装着することによって治具とワークとの間にできる密着
部と間隙部との熱伝導の差を小さくして溶接条件の均一
化を図るようにしたものが特開昭63−256293号公報に記
載されている。また、レーザ加工機において平板状の被
加工物の外縁部を保持台によって固定するようにしたも
のが実開昭63−163287号公報に記載されている。さら
に、つき合わせの片面溶接において被溶接材の表裏両面
より油圧式でローラを圧接することによって溶接開先の
面合わせをするようにしたものが特開昭62−234693号公
報に記載されている。As a related prior art, there is provided a clamp device for welding a pipe and a flange, in which a hard rubber is provided outside a clamp portion so as to absorb a difference in the inner diameter of the pipe and the flange. What is JP-A-61-1269
No. 96. Also, in the inert gas arc welding, by mounting a non-metallic intermediate between the welding jig and the work, the difference in heat conduction between the contact portion and the gap formed between the jig and the work is reduced. Japanese Patent Application Laid-Open No. 63-256293 discloses a technique for making the welding conditions uniform. Japanese Laid-Open Utility Model Publication No. 63-163287 discloses a laser processing machine in which the outer edge of a flat workpiece is fixed by a holding table. Furthermore, Japanese Patent Application Laid-Open No. 62-234693 discloses a method in which in welding one side welding, a surface of a welding groove is aligned by pressing a roller hydraulically from both front and back surfaces of a material to be welded. .
［発明が解決しようとする課題］ 第２図に示す従来の平板シーム溶接装置において溶接
時の重ね代の変化をできるだけ小さく抑えるためには、
被溶接材（１），（２）を幅方向に均等かつ確実にクラ
ンプしなければならないが、そのためには上下クランプ
バー（５′），（５″）；（６′），（６″）の平行度
および平面度の精度が厳しく要求され、かつクランプ荷
重を必要以上に大きくする必要があった。また、平行精
度を良くするために組立調整にも非常に多くの時間が必
要となるといった問題もあった。[Problems to be Solved by the Invention] In the conventional flat plate seam welding apparatus shown in FIG.
The workpieces (1) and (2) must be clamped uniformly and reliably in the width direction. For this purpose, upper and lower clamp bars (5 '), (5 ");(6'),(6") Therefore, the accuracy of the parallelism and flatness was required strictly, and the clamping load had to be increased more than necessary. In addition, there is also a problem that an extremely large amount of time is required for assembling adjustment in order to improve the parallel accuracy.
関連する先行技術として先の挙げたものは、いずれ
も、平板の重ねシーム溶接における上記のような問題点
を示唆しそれを解決する手段を提供するものではない。None of the related prior arts listed above suggests and provides a means to solve the above problems in lap seam welding of flat plates.
この発明は、上記のような問題点を解消するためにな
されたもので、組立調整が容易にできるとともに、適度
なクランプ荷重によって被溶接材を均等にクランプでき
る平板用シーム溶接装置を得ることを目的とする。The present invention has been made in order to solve the above-described problems, and it is an object of the present invention to provide a flat plate seam welding apparatus capable of easily assembling and adjusting and uniformly clamping a material to be welded with an appropriate clamping load. Aim.
［課題を解決するための手段］ この発明にかかる平板用シーム溶接装置は、各クラン
プ装置の上下クランプ部のクランプ面に、各平板被溶接
材と接触し押え力を集中させるためのパッドを各平板被
溶接材の長さ方向に複数に分割して配するとともに、そ
のパッドとクランプ面との間にゴム等の弾性体を挿着し
たものである。[Means for Solving the Problems] A flat plate seam welding apparatus according to the present invention includes a pad for contacting each flat plate workpiece and concentrating a pressing force on a clamp surface of an upper and lower clamp portion of each clamp apparatus. The plate-like material to be welded is divided into a plurality of pieces in the longitudinal direction, and an elastic body such as rubber is inserted between the pad and the clamp surface.
［作用］ この発明においては、上下クランプ部に配したパッド
とクランプ面の間に弾性体が介在することにより、上下
クランプ部の平行度およびクランプ面の平面度の誤差が
吸収されて被溶接材が幅方向全域にわたって均等かつ確
実に固定され、それにより、溶接時の被溶接材の逃げに
よる重ね代の変化が最小限に抑えられる。[Function] In the present invention, the elastic body is interposed between the pad disposed on the upper and lower clamp portions and the clamp surface, thereby absorbing errors in the parallelism of the upper and lower clamp portions and the flatness of the clamp surface, and Are fixed uniformly and securely over the entire width direction, thereby minimizing the change in the overlap allowance due to the escape of the workpiece during welding.
［実施例］ 第１図はこの発明による平板用シーム溶接装置の一実
施例の概略図である。図において、（１），（２）は、
接合すべき二つの平板被溶接材、（３），（４）は、こ
れら二つの平板被溶接材（１），（２）の重ね部に電流
を流しながら押圧力を加える輪転式の上下一対の電極で
ある。溶接装置は、これら電極（３），（４）と、それ
ぞれの平板被溶接材（１），（２）を所定位置に固定す
るためのクランプ装置（５），（６）とから構成されて
いる。各クランプ装置（５），（６）は、各被溶接材
（１），（２）の幅方向に上下平行に配備されたフラッ
トなクランプバー（５′），（５″）；（６′），
（６″）を備え、各クランプバー（５′），（５″）；
（６′），（６″）のクランプ面には押え力を集中させ
るためパッド（７）が装着されている。該パッド（７）
は、被溶接材（１），（２）の長さ方向に複数に分割さ
れるとともに被溶接材（１），（２）の最大幅よりも長
くされ、ゴム板（８）を間に挟んで上下クランプバー
（５′），（５″）；（６′），（６″）に取り付けら
れている。Embodiment FIG. 1 is a schematic view of an embodiment of a flat plate seam welding apparatus according to the present invention. In the figure, (1) and (2)
The two flat plate members to be joined, (3) and (4), are a pair of rotary upper and lower members that apply a pressing force while applying a current to the overlapping portion of the two flat plate members (1) and (2). Electrodes. The welding device is composed of these electrodes (3) and (4) and clamp devices (5) and (6) for fixing the respective flat workpieces (1) and (2) at predetermined positions. I have. Each of the clamp devices (5) and (6) is a flat clamp bar (5 '), (5 ") which is provided in parallel with the width direction of each of the workpieces (1) and (2); ),
(6 "), each clamp bar (5 '), (5");
Pads (7) are mounted on the clamp surfaces (6 ') and (6 ") to concentrate the pressing force.
Is divided into a plurality of pieces in the length direction of the materials to be welded (1) and (2) and is made longer than the maximum width of the materials to be welded (1) and (2), and sandwiches the rubber plate (8) therebetween. To the upper and lower clamp bars (5 '), (5 ");(6'),(6").
クランプ装置（５），（６）は、上部クランプバー
（５′），（５″）に図示しない油圧シリンダー等の駆
動源によって荷重がかけられることにより作動し、第１
図に示すように被溶接材（１），（２）をクランプす
る。その際、ゴム板（８）は弾性体であって、荷重に応
じて圧縮されるため、上下クランプバー（５′），
（５″）；（６′），（６″）のクランプ面の平行度お
よび平面度が上記ゴム板（８）の圧縮代未満程度の精度
に確保されておれば、被溶接材（１），（２）に対しそ
の接触面全域にわたって十分に押圧力を加えることがで
き、幅方向に均等にかつ確実にクランプすることができ
る。The clamp devices (5) and (6) operate when a load is applied to the upper clamp bars (5 ′) and (5 ″) by a drive source such as a hydraulic cylinder (not shown), and the first clamp bars (5 ′) and (5 ″) operate.
As shown in the figure, the workpieces (1) and (2) are clamped. At this time, since the rubber plate (8) is an elastic body and is compressed according to the load, the upper and lower clamp bars (5 '),
(5 ″); If the parallelism and flatness of the clamp surfaces of (6 ′) and (6 ″) are secured to an accuracy of less than the compression allowance of the rubber plate (8), the material to be welded (1) , (2) can be sufficiently pressed over the entire contact surface, and can be clamped uniformly and reliably in the width direction.
このようなクランプ装置（５），（６）を有する平板
用シーム溶接装置を用い、被溶接材（１），（２）の接
合しようとする部分を板厚の約1.0〜1.5倍の長さで重ね
合わせて上記クランプ装置（５），（６）により固定
し、一方の平板被溶接材（１）の重ね面でない面から他
方の平板被溶接材（２）の重ね面でない面へそれぞれの
面に接触する電極（３），（４）を通じて電流を流し、
これら電極（３），（４）を各平板被溶接材（１），
（２）の幅方向に互いに押圧力を加えながら転動させる
と、接合部が圧し潰されながら溶接される。その際、接
合部を電極で圧し潰したときに、各被溶接材の重ね面で
ない側の角部が潰され、互いの重ね面が斜めになって、
被溶接材（１），（２）には互いの接合部の重ね代が小
さくなる方向へ逃がすような力が作用するが、この装置
では被溶接材（１）．（２）が上記のようにクランプ装
置（５），（６）によって幅方向に均等にかつ確実にク
ランプされるので、被溶接材（１），（２）が互いに逃
げるのが防止され、重ね代の変化が最小限に抑えられ
る。Using a flat plate seam welding apparatus having such clamping devices (5) and (6), a portion to be welded of the materials to be welded (1) and (2) has a length of about 1.0 to 1.5 times the sheet thickness. And fixed by the clamping devices (5) and (6). The surface of the plate-like material to be welded (1), which is not the overlapping surface, is shifted from the surface of the other plate-like material to be welded (2) to the surface which is not the overlapping surface. An electric current is passed through the electrodes (3) and (4) in contact with the surface,
These electrodes (3) and (4) are connected to the respective flat workpieces (1),
When rolling is performed while applying pressing force to each other in the width direction of (2), the joint is crushed and welded. At that time, when the joints were crushed by the electrodes, the corners of the non-overlapping surfaces of the respective materials to be welded were crushed, and the overlapping surfaces became oblique,
A force is exerted on the workpieces (1) and (2) so as to escape in a direction in which the overlap between the joints is reduced. In this apparatus, the workpieces (1). Since (2) is uniformly and reliably clamped in the width direction by the clamping devices (5) and (6) as described above, the materials to be welded (1) and (2) are prevented from escaping from each other, and the piles are stacked. Changes in teens are minimized.
なお、上記実施例ではクランプバーのクランプ面とパ
ッド間の弾性体としてゴム板を使用した場合について説
明したが、ゴム板の代わりにコイルバネ等の他の弾性体
を使用しても同等の効果がある。また、パッドは被溶接
材全幅にわたって設けているが、被溶接材の幅方向に２
箇所以上に設けて、それで確実に固定することができれ
ば、全幅に設けなくても同時の効果を得ることができ
る。In the above embodiment, the case where a rubber plate is used as an elastic body between the clamp surface of the clamp bar and the pad has been described. However, the same effect can be obtained by using another elastic body such as a coil spring instead of the rubber plate. is there. The pad is provided over the entire width of the material to be welded.
If it can be provided at more than one place and it can be securely fixed with it, the same effect can be obtained even if it is not provided over the entire width.
［発明の効果］ 以上のように、この発明によれば、クランプバーのク
ランプ面とパッドとの間に弾性体を挿入しているので、
上下クランプバーの平行度および平面度はそれほど厳し
い精度が要求されず、また必要以上に大きなクランプ荷
重をかけなくても十分なクランプ力が得られ、被溶接材
を幅方向全域にわたって均等でかつ確実に固定して、溶
接時の被溶接材の逃げによる重み代の変化を最小限に抑
えることができ、安価にして信頼性の高い装置が得られ
る。[Effects of the Invention] As described above, according to the present invention, since the elastic body is inserted between the clamp surface of the clamp bar and the pad,
The parallelism and flatness of the upper and lower clamp bars do not need to be so strictly accurate.Also, sufficient clamping force can be obtained without applying excessively large clamping load, and the material to be welded is even and reliable over the entire width direction. , The change of the weight allowance due to the escape of the material to be welded at the time of welding can be minimized, and an inexpensive and highly reliable apparatus can be obtained.
第１図はこの発明による平板用シーム溶接装置の一実施
例を示す概略図、第２図は従来の平板用シーム溶接装置
の概略図である。 図において、（１），（２）は被溶接材、（３），
（４）は電極、（５），（６）はクランプ装置、（７）
はパッド、（８）はゴム板である。 なお、図中、同一符号は同一または相当部分を示す。FIG. 1 is a schematic view showing an embodiment of a flat plate seam welding apparatus according to the present invention, and FIG. 2 is a schematic view of a conventional flat plate seam welding apparatus. In the figure, (1) and (2) are the materials to be welded, and (3) and (3)
(4) is an electrode, (5) and (6) are clamping devices, (7)
Is a pad, and (8) is a rubber plate. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (1)
の平板被溶接材を上下クランプ部を備えた各クランプ装
置により所定の重ね代をもって重ね合わせた状態で固定
し、前記第一の平板被溶接材の重ね面でない面から前記
第二の平板被溶接材の重ね面でない面へそれぞれの面に
接触する電極を通じて電流を流すようにした平板用シー
ム溶接装置において、前記各クランプ装置の上下クラン
プ部のクランプ面に、各平板被溶接材と接触し押え力を
集中させるためのパッドを各平板被溶接材の長さ方向に
複数に分割して配するとともに、該パッドと前記クラン
プ面との間に弾性体を挿着したことを特徴とする平板用
シーム溶接装置。1. A first and a second flat plate to be welded to be joined by overlapping their ends are fixed in a state of being overlapped with a predetermined overlap allowance by respective clamping devices provided with upper and lower clamp portions. The flat plate seam welding apparatus according to claim 1, wherein a current flows from the non-overlapping surface of the one plate-to-be-welded material to the non-overlapping surface of the second flat-plate-to-be-welded material through electrodes in contact with the respective surfaces. On the clamp surfaces of the upper and lower clamp portions of the apparatus, pads for contacting each plate-to-be-welded material and concentrating the pressing force are divided into a plurality of pieces in the longitudinal direction of each plate-to-be-welded material, and the pads and the aforesaid A flat plate seam welding apparatus characterized in that an elastic body is inserted between the clamp surface and a clamp surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274067A JP3013425B2 (en) | 1990-10-11 | 1990-10-11 | Flat plate seam welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2274067A JP3013425B2 (en) | 1990-10-11 | 1990-10-11 | Flat plate seam welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04147794A JPH04147794A (en) | 1992-05-21 |
| JP3013425B2 true JP3013425B2 (en) | 2000-02-28 |
Family
ID=17536512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2274067A Expired - Lifetime JP3013425B2 (en) | 1990-10-11 | 1990-10-11 | Flat plate seam welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3013425B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012029476A (en) * | 2010-07-23 | 2012-02-09 | Hitachi Car Eng Co Ltd | Brushless motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956099A (en) * | 2017-03-02 | 2017-07-18 | 江苏明科光电技术有限公司 | A kind of spot welding positioning tool for shading ring |
-
1990
- 1990-10-11 JP JP2274067A patent/JP3013425B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012029476A (en) * | 2010-07-23 | 2012-02-09 | Hitachi Car Eng Co Ltd | Brushless motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04147794A (en) | 1992-05-21 |
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