JPH02169186A - Method for spot welding work coated with vinyl chloride or the like - Google Patents
Method for spot welding work coated with vinyl chloride or the likeInfo
- Publication number
- JPH02169186A JPH02169186A JP32719688A JP32719688A JPH02169186A JP H02169186 A JPH02169186 A JP H02169186A JP 32719688 A JP32719688 A JP 32719688A JP 32719688 A JP32719688 A JP 32719688A JP H02169186 A JPH02169186 A JP H02169186A
- Authority
- JP
- Japan
- Prior art keywords
- spot welding
- gauze
- water
- workpiece
- steel 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.)
- Pending
Links
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000003466 welding Methods 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 238000007796 conventional method Methods 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、塩化ビニル等で被覆された被加工物のスポッ
ト溶接時に、塩化ビニル等の被覆面が溶けてヒートマー
クを発生させるのを防止できるようにしたスポット溶接
方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention prevents the surface covered with vinyl chloride, etc. from melting and generating heat marks during spot welding of workpieces coated with vinyl chloride, etc. This invention relates to a spot welding method that makes it possible to perform spot welding.
［従来の技術］
従来、第４図に示すような塩ビ鋼板製の被加工物（１）
と鋼板製の被加工物（２）をスポット溶接する時には、
加圧電圧や加圧力さらにはスポット電極先端の形状等の
最適な組み合わせを実験的に求め、塩化ビニル等の被覆
面に生じるヒートマークを極力少なくするようにしてい
る。[Prior art] Conventionally, a workpiece (1) made of PVC steel plate as shown in Fig. 4 has been used.
When spot welding the steel plate workpiece (2),
The optimal combination of the applied voltage, applied force, and shape of the tip of the spot electrode is experimentally determined in order to minimize heat marks that occur on the surface coated with vinyl chloride or the like.
［発明が解決しようとする課題］
しかし、ヒートマークを少なくしようとすると、スポッ
ト溶接の強度が小さくなってしまう。[Problems to be Solved by the Invention] However, when trying to reduce the number of heat marks, the strength of spot welding decreases.
従って、ある程度のヒートマークは犠牲にしなければな
らなかったが、自動車の感性品質という面からとらえる
と大きな問題であった。Therefore, a certain amount of heat marks had to be sacrificed, but this was a big problem from the perspective of the perceived quality of the car.
本発明は、塩ビ鋼板等のスポット溶接に際し、吸水性の
布を被加工物の下面に敷き、塩化ビニール等の被覆面を
効率的に冷却することによってヒートマークの発生を抑
え、かつ溶接強度も低下させないというスポット溶接方
法を提供しようとするものである。When spot welding PVC steel plates, etc., the present invention suppresses the occurrence of heat marks and increases welding strength by placing a water-absorbing cloth on the underside of the workpiece and efficiently cooling the surface coated with PVC, etc. The purpose is to provide a spot welding method that does not cause deterioration.
［課題を解決するための手段］
上記目的を達成するために、本発明の塩化ビニル等で被
覆された被加工物のスポット／８接方法は、鋼板製の載
置台（７）上に水に濡らした吸水性の布（９）を敷き、
この上に、塩ビ鋼板等の被加工物（１）の樹脂被覆面（
１ａ）を下向きにして載置するとともに鋼板製の他方の
被加工物（２）を載置し、鋼板製被加工物の上方からは
スポット溶接用電極（４）を、また、この溶接用電極か
ら少し離れた位置にはアース棒（５）を当接させてスポ
ット溶接をするようにしたものである。また、吸水性の
布（９）の端部を適宜な水受け（８）に浸漬させ、毛細
管現象により常時布を水濡れの状態に保つようにしたも
のである。[Means for Solving the Problems] In order to achieve the above object, the spot/8 contact method for a workpiece coated with vinyl chloride or the like of the present invention is implemented by placing a workpiece in water on a mounting table (7) made of a steel plate. Lay out a wet absorbent cloth (9),
On top of this, the resin-coated surface (
1a) is placed facing downward, and the other workpiece made of steel plate (2) is placed, and the spot welding electrode (4) is placed from above the steel plate workpiece, and this welding electrode A grounding rod (5) is brought into contact with the grounding rod (5) at a position slightly away from the grounding point for spot welding. Further, the end of the water-absorbing cloth (9) is dipped into a suitable water receptacle (8), so that the cloth is constantly kept wet by capillary action.
［発明の作用コ
本発明のスポット溶接方法は、スポット溶接用電極並び
にアース棒下面から塩化ビニル等の被覆面に達する熱を
、布に浸みこませた水の蒸発潜熱により強力に冷却する
ことができるので、被加工物に施された樹脂面の溶融を
極力抑えヒートマークを発生させない。[Operation of the Invention] The spot welding method of the present invention is capable of powerfully cooling the heat reaching the coated surface of vinyl chloride or the like from the bottom surface of the spot welding electrode and ground rod by the latent heat of vaporization of water soaked into the cloth. As a result, melting of the resin surface applied to the workpiece is minimized and heat marks are not generated.
［実施例］
以下、図面を参照して説明すると、第１〜３図は、本発
明に係る装置を示したもので、一般の定位置式スポット
溶接機の上部ホルダー（３）には、一定の間隔を設けて
溶接用電極（４）とアース棒（５）が固定されている。[Example] The following will be explained with reference to the drawings. Figures 1 to 3 show an apparatus according to the present invention, and the upper holder (3) of a general fixed position spot welding machine has a A welding electrode (4) and a ground rod (5) are fixed at intervals.
一方、下部ホルダー（６）の中央部上面には、被加工物
をのせる鋼板製の＠置台（７）が固定されている。また
、この下部ホルダーの中央部には、前記′＠載置台とり
まくように凹溝をリング状に形成して水受け（８）を設
けている。On the other hand, a steel plate @ placing stand (7) on which a workpiece is placed is fixed to the upper surface of the center part of the lower holder (6). Further, in the center of the lower holder, a water receptacle (8) is provided by forming a concave groove in a ring shape so as to surround the mounting table.
吸水性の布（９）としては、ガーゼを５〜６枚重ねたも
のを使用しており、このガーゼは第２〜３図に示すよう
に、鋼板製の載置台（７）上に置かれ、ガーゼの端部が
前記の水受け（８）に浸漬されるようになっている。従
って、ガーゼは毛細管現象により絶えず水に濡れた状態
で保たれている。As the water-absorbent cloth (9), 5 to 6 layers of gauze are used, and as shown in Figures 2 and 3, this gauze is placed on a steel plate mounting table (7). The end of the gauze is immersed in the water receptacle (8). Therefore, the gauze is kept constantly wet by capillary action.
なお、ガーゼを水濡れの状態に保つ他の手段としては、
適宜なスポイトを使用して、手動により水をかけてもよ
い。In addition, as another means of keeping the gauze wet,
Water may be applied manually using a suitable dropper.
塩ビ鋼板製の被加工物であるインストルメントクラスタ
ー本体（１）は、前記の載置台（７）上に敷かれたガー
ゼの上に、被加工物の樹脂被覆面を下向きにして載置さ
れる。The instrument cluster main body (1), which is a workpiece made of a PVC steel plate, is placed on the gauze spread on the mounting table (7) with the resin-coated surface of the workpiece facing downward. .
鋼板製の他方の被加工物であるリテーナ−（２）には、
下方に突出させた小さなプロジェクション（２ａ）が形
成されており、このプロジェクションを下向きにして、
インストルメントクラスター上にａ置される。The retainer (2), which is the other workpiece made of steel plate, has
A small projection (2a) is formed that protrudes downward, and this projection is turned downward.
It is located on the instrument cluster.
次に、本発明の方法により自動車の内装部品として使用
されるインストルメントクラスターのスポット溶接につ
いて、具体的なデータに基づき従来方法と比較しながら
実施結果を説明する。Next, the results of spot welding of an instrument cluster used as an interior part of an automobile by the method of the present invention will be explained based on specific data and compared with a conventional method.
一方の被加工物（１）としては、厚さ０．８ｍｍの鋼板
に０．３ｍｍの塩化ビニルを被覆した塩ビ鋼板を使用し
、他方の被加工物（２）としては、外径１．５φ、高さ
０．５ｍｍのプロジェクション（２ａ）が形成された厚
さ１．Ｏｍｍの鋼板を使用した。また、溶接用電極（４
）およびアース捧（５）は断面６Ｘ１０ｍｍの矩形状の
銅棒を使用した。One workpiece (1) is a PVC steel plate with a thickness of 0.8mm coated with 0.3mm of vinyl chloride, and the other workpiece (2) is a steel plate with an outer diameter of 1.5φ. , a thickness of 1.5mm on which a projection (2a) of height 0.5mm is formed. Omm steel plate was used. In addition, welding electrodes (4
) and the earthing rod (5) were rectangular copper rods with a cross section of 6 x 10 mm.
そして、従来の方法においては、ヒートマークの限度見
本ぎりぎりのスポット溶接の条件として、加圧電圧＝１
８０■、工１−圧力＝１．０Ｋｇ／を設定し、また、本
発明の水に濡れたガーゼを使用した方法においては、ヒ
ートマークがほとんど生じないスポット溶接の条件とし
て、加圧電圧＝２２０Ｖ１エアー圧力＝２．０Ｋｇ／
を設定し、従来方法と本発明の方法について、各々２
０個のスポット溶接を行い、溶接強度とスポットマーク
の発生状況を比較した。In the conventional method, the conditions for spot welding at the very limit of the heat mark are applied voltage = 1.
In addition, in the method using wet gauze of the present invention, the pressure voltage = 220V1 is set as a spot welding condition where almost no heat mark occurs. Air pressure = 2.0Kg/
2 for the conventional method and the method of the present invention.
0 spot welds were performed and the welding strength and the occurrence of spot marks were compared.
この結果は表−１に示すように、本発明の方法では、ヒ
ートマークが発生せず、しかも溶接強度のだかいものが
得られた。As shown in Table 1, the method of the present invention did not generate heat marks and also provided high welding strength.
表−１ 不合格とする。Table-1 Fail.
Claims (2)
布（９）を敷き、この上に、塩ビ鋼板等の被加工物（１
）の樹脂被覆面（１ａ）を下向きにして載置するととも
に鋼板製の他方の被加工物（２）を載置し、鋼板製の加
工物（２）の上方からはスポット溶接用電極（４）を、
また、この溶接用電極から少し離れた位置にはアース棒
（５）を当接させてスポット溶接をするようにしたこと
を特徴とする塩化ビニル等で被覆された被加工物のスポ
ット溶接方法。(1) Spread a water-absorbent cloth (9) moistened with water on the copper plate mounting table (7), and place the workpiece (1
) is placed with the resin-coated surface (1a) facing downward, and the other workpiece (2) made of steel plate is placed thereon, and the spot welding electrode (4) is placed from above the workpiece (2) made of steel plate. )of,
Further, a method for spot welding a workpiece coated with vinyl chloride or the like, characterized in that spot welding is carried out by contacting a ground rod (5) at a position slightly distant from the welding electrode.
性の布（９）の端部を適宜な水受け（８）に浸漬させ、
毛細管現象により布を水濡れの状態に保つようにしたこ
とを特徴とする塩化ビニル等で被覆された被加工物のス
ポット溶接方法。(2) In the spot welding method according to claim 1, the end portion of the water-absorbing cloth (9) is immersed in a suitable water receptacle (8);
A method for spot welding workpieces coated with vinyl chloride, etc., characterized in that the cloth is kept wet by capillary action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32719688A JPH02169186A (en) | 1988-12-23 | 1988-12-23 | Method for spot welding work coated with vinyl chloride or the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32719688A JPH02169186A (en) | 1988-12-23 | 1988-12-23 | Method for spot welding work coated with vinyl chloride or the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02169186A true JPH02169186A (en) | 1990-06-29 |
Family
ID=18196386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32719688A Pending JPH02169186A (en) | 1988-12-23 | 1988-12-23 | Method for spot welding work coated with vinyl chloride or the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02169186A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10888896B2 (en) | 2005-01-21 | 2021-01-12 | The Boeing Company | Activation method using modifying agent |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235334A (en) * | 1975-09-12 | 1977-03-17 | Sanyo Electric Co Ltd | Liquid fuel combustor |
-
1988
- 1988-12-23 JP JP32719688A patent/JPH02169186A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5235334A (en) * | 1975-09-12 | 1977-03-17 | Sanyo Electric Co Ltd | Liquid fuel combustor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10888896B2 (en) | 2005-01-21 | 2021-01-12 | The Boeing Company | Activation method using modifying agent |
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