JPH0349671B2 - - Google Patents
Info
- Publication number
- JPH0349671B2 JPH0349671B2 JP60001730A JP173085A JPH0349671B2 JP H0349671 B2 JPH0349671 B2 JP H0349671B2 JP 60001730 A JP60001730 A JP 60001730A JP 173085 A JP173085 A JP 173085A JP H0349671 B2 JPH0349671 B2 JP H0349671B2
- Authority
- JP
- Japan
- Prior art keywords
- piston rod
- steel pipe
- rod body
- cap
- liquid resin
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/314—Spot welding guns, e.g. mounted on robots
Landscapes
- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は板金工程などにおいて使用されるポ
ータブル式のスポツト溶接機に係り、とくにエア
シリンダ等にて駆動されるスポツトガン電極の絶
縁構造の製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a portable spot welding machine used in sheet metal processing, etc., and in particular to a method for manufacturing an insulating structure of a spot gun electrode driven by an air cylinder or the like. It is related to.
従来のポータブルタイプＣ型ガンでは、第４図
に示すように、可動側のスポツト電極１にエアシ
リンダ２で駆動されるピストンロツド本体３を経
由して給電するようになつており、ピストンロツ
ド本体３の表面は特に電気絶縁されず外部に露出
していた。このため、車体のメンバ底部などをス
ポツト溶接する時にスポツト電極１以外の箇所た
とえばピストンロツド本体３の側面が被加工物４
に接触すると、接触箇所３Ａから電流が分流する
ので、スポツト溶接強度の低下をきたす虞れがあ
り、さらに、ピストンロツド本体３から被加工物
４への通電により電触が生じて損傷し、Ｃ型ガン
寿命が短かくなるという問題点があつた。
In the conventional portable C type gun, as shown in Fig. 4, power is supplied to the movable spot electrode 1 via the piston rod body 3 driven by the air cylinder 2. The surface was not particularly electrically insulated and was exposed to the outside. Therefore, when spot welding the bottom of a member of a car body, etc., parts other than the spot electrode 1, such as the side surface of the piston rod body 3, are welded to the workpiece 4.
If the piston rod body 3 contacts the workpiece 4, the current will be shunted from the contact point 3A, which may reduce the strength of the spot weld.Furthermore, electric contact may occur due to the current flowing from the piston rod body 3 to the workpiece 4, resulting in damage to the C-type piston rod. There was a problem that the gun life was shortened.
発明者は上記の問題点を解決しようと、ピスト
ンロツド本体３にプラズマ溶射よりセラミツクコ
ーテイングを施し、表面に電気絶縁層を形成しラ
インで使用することを試みた。この構造では電気
絶縁特性は良好であつたが、エアシリンダの気密
性を保つため、エアシリンダ内部のＯリングと接
触するセラミツクコーテイング層を平滑に仕上げ
る必要があり、セラミツク層のダイヤモンドによ
る研摩加工が必要となつた。このため研摩加工コ
ストが高くなるという問題点があつた。また、セ
ラミツクコーテイング層自体の硬度は高いが粒子
間の結合力にやや難点があるので、ピストンロツ
ドのエツジと被加工物である車体メンバのフラン
ジ部などとの衝突により一旦傷が付くと、そこか
ら少しずつ剥離するので耐久性の面で問題があつ
た。 In an attempt to solve the above problems, the inventor applied a ceramic coating to the piston rod body 3 by plasma spraying, formed an electrically insulating layer on the surface, and attempted to use the piston rod body 3 in a line. This structure had good electrical insulation properties, but in order to maintain the airtightness of the air cylinder, it was necessary to smooth the ceramic coating layer that contacts the O-ring inside the air cylinder. It became necessary. For this reason, there was a problem in that the polishing cost increased. In addition, although the ceramic coating layer itself has high hardness, the bonding force between the particles is somewhat difficult, so once the edge of the piston rod collides with the flange of the workpiece, such as the flange of the car body member, and it gets scratched, it will be damaged. There was a problem with durability because it peeled off little by little.
この発明は上述の問題点を解消するためなされ
たものであり、ピストンロツド側面が被加工物に
接触しても不具合が発生せず、耐久性が高く、か
つ安価に製造できるスプツトガン電極の絶縁構造
の製造方法を提供することを目的とする。
This invention was made to solve the above-mentioned problems, and provides an insulated structure for spout gun electrodes that does not cause any defects even when the side surface of the piston rod comes into contact with the workpiece, has high durability, and can be manufactured at low cost. The purpose is to provide a manufacturing method.
このため本発明では、先端の内径に面取り加工
した鋼管に、先端部にキヤツプを取付けたピスト
ンロツド本体を嵌挿し、次いで上記キヤツプを上
側にして、電気絶縁特性を有する液状樹脂からな
る接着剤を上記鋼管の面取り加工された端面と上
記キヤツプとの間隙から、鋼管とピストンロツド
本体との間の微少間隙に真空充填し、そして、充
填された液状樹脂接着剤を経時硬化あるいは熱硬
化させて鋼管とピストンロツド本体とを接着する
ことを特徴とするスポツトガン電極の絶縁構造の
製造方法が提供される。
Therefore, in the present invention, a piston rod body with a cap attached to the tip is inserted into a steel pipe with a chamfered inner diameter at the tip, and then, with the cap facing upward, an adhesive made of a liquid resin having electrical insulation properties is applied to the piston rod. From the gap between the chamfered end of the steel pipe and the above-mentioned cap, vacuum is filled into the minute gap between the steel pipe and the piston rod body, and the filled liquid resin adhesive is cured over time or heat cured to bond the steel pipe and piston rod together. Provided is a method for manufacturing an insulating structure for a spot gun electrode, which is characterized by bonding the insulating structure to the main body.
この発明方法によれば、電気絶縁特性を有する
液状樹脂を鋼管の面取り加工した端面から真空充
填するため、液状樹脂が鋼管とピストンロツド本
体との間の微少間隙に均一に充填され絶縁薄膜を
容易に形成することができる。
According to the method of this invention, since the liquid resin having electrical insulation properties is vacuum-filled from the chamfered end surface of the steel pipe, the liquid resin is uniformly filled into the minute gap between the steel pipe and the piston rod body, and the insulating thin film can be easily formed. can be formed.
第２図及び第３図を参照し本発明方法を具体的
に説明する。
The method of the present invention will be specifically explained with reference to FIGS. 2 and 3.
先ず、ピストンロツド本体３の下端部に雄ねじ
を切る。また、鋼管６の下端の内径端面に丸みを
持つたＲ状の面取り部６Ａを形成する。次に、こ
の鋼管６にピストンロツド本体３を嵌挿し、ピス
トンロツド本体３の先端部にキヤツプ５を螺合し
て組付ける。第２図に示すように、ピストンロツ
ド本体３と鋼管６とキヤツプ５の横断面形状はす
べて同心円となるようにそれぞれの真円度を単体
の状態で確保する必要がある。 First, a male thread is cut in the lower end of the piston rod body 3. Further, a rounded R-shaped chamfered portion 6A is formed on the inner diameter end surface of the lower end of the steel pipe 6. Next, the piston rod body 3 is fitted into the steel pipe 6, and the cap 5 is screwed onto the tip of the piston rod body 3 to be assembled. As shown in FIG. 2, it is necessary to ensure the roundness of each piston rod body 3, steel pipe 6, and cap 5 so that the cross-sectional shapes thereof are all concentric circles.
第３図は液状樹脂からなる接着材を真空充填す
るための装置の断面図である。チヤンバー１１内
のサポート１２上に、ピストンロツド本体３にキ
ヤツプ５と鋼管６が組付けられたものをキヤツプ
５が上になるように載置し、密封パツキング１３
を鋼管６の外周面に密着させて固定する。次い
で、密封パツキング１３上部に液状の樹脂接着剤
１４を流し込み、チヤンバー１１内の空気を真空
ポンプ１５で排気する。液状の樹脂接着材１４
は、キヤツプ５と鋼管６との間隙から鋼管６の内
径端面に形成されたＲ状の面取り部６Ａに流入
し、ピストンロツド本体３と鋼管との間の微少間
隙に均一に充填される。次に、充填された液状の
樹脂接着材を経時硬化あるいは熱硬化させて絶縁
薄膜７を形成すると共に、ピストンロツド本体３
と鋼管６とを接着固定する。 FIG. 3 is a sectional view of an apparatus for vacuum filling an adhesive material made of liquid resin. The piston rod body 3 with the cap 5 and steel pipe 6 assembled is placed on the support 12 in the chamber 11 with the cap 5 facing upward, and the sealing packing 13 is placed.
is fixed in close contact with the outer peripheral surface of the steel pipe 6. Next, a liquid resin adhesive 14 is poured into the upper part of the sealing packing 13, and the air inside the chamber 11 is evacuated by a vacuum pump 15. Liquid resin adhesive 14
Flows from the gap between the cap 5 and the steel pipe 6 into the R-shaped chamfer 6A formed on the inner diameter end surface of the steel pipe 6, and uniformly fills the minute gap between the piston rod body 3 and the steel pipe. Next, the filled liquid resin adhesive is cured with time or heat to form an insulating thin film 7, and the piston rod body 3 is
and the steel pipe 6 are adhesively fixed.
発明者は、樹脂接着材としてエポキシ系接着材
（たとえばアラルダイトCY192）を用い、ピスト
ンロツド本体３と鋼管６の間の微少間隙（クリア
ランス）を約0.5mmに設定することにより、良好
な結果を得た。 The inventor obtained good results by using an epoxy adhesive (for example, Araldite CY192) as the resin adhesive and setting the minute gap (clearance) between the piston rod body 3 and the steel pipe 6 to approximately 0.5 mm. .
上記方法によれば、液状の樹脂をピストンロツ
ド本体と鋼管との間の微少間隙に浸透充填させて
硬化させるため、薄くかつ均一な絶縁薄膜が形成
されるので、耐衝撃性が高い利点がある。 According to the above method, a thin and uniform insulating film is formed by infiltrating and hardening the liquid resin into the minute gap between the piston rod body and the steel pipe, which has the advantage of high impact resistance.
第１図は上記方法で絶縁構造を設けたＣ型ガン
の側面図である。エアシリンダ２で駆動される丸
棒形状したピストンロツド本体３は導電率の高い
銅合金で形成され、その先端には前記第２図で示
したようにねじ３Ｂが切られている。ねじ３Ｂに
は硬質の鋼材で形成されたキヤツプ５が螺合され
ている。 FIG. 1 is a side view of a C-type gun provided with an insulating structure by the above method. A piston rod body 3 in the shape of a round bar driven by an air cylinder 2 is made of a copper alloy with high electrical conductivity, and has a thread 3B cut at its tip as shown in FIG. 2 above. A cap 5 made of hard steel is screwed onto the screw 3B.
ピストンロツド本体３は硬質の鋼管６に嵌挿さ
れ、樹脂接着剤により固着されている。樹脂接着
剤は鋼管６とピストンロツド本体３とを接着する
と共に、自ずからは薄膜状になり絶縁薄膜７を形
成している。この絶縁薄膜７に要求される絶縁耐
力は高々数10Vであり、絶縁抵抗値は数ＫΩあれ
ばよいので、樹脂接着剤は前記したような金属の
接着に通常使用されるエポキシ系あるいはフエノ
ール系の接着剤を用いている。 The piston rod body 3 is fitted into a hard steel pipe 6 and fixed with resin adhesive. The resin adhesive bonds the steel pipe 6 and the piston rod body 3, and also becomes a thin film by itself to form an insulating thin film 7. The dielectric strength required for this insulating thin film 7 is several tens of volts at most, and the insulation resistance value is only a few kilohms, so the resin adhesive is an epoxy or phenol type that is usually used for bonding metals as described above. Adhesive is used.
上記絶縁構造を施したＣ型ガンは、ピストンロ
ツド本体３の外周が硬質の鋼管６によつて覆われ
ており、また下端部に鋼材で形成された硬質のキ
ヤツプ５が取付られているから、ピストンロツド
の外周が摩耗し難く、また下端部が被加工物４の
フランジ部などに衝突してもピストンロツドを傷
めることがなく、耐摩耗性および耐久性が高いと
いう利点がある。更に、ピストンロツド外周と被
加工物４とが接触しても絶縁薄膜７によつて絶縁
が確保され、分流による溶接強度の低下が生じな
いという利点がある。 In the C-type gun with the above-mentioned insulating structure, the outer periphery of the piston rod body 3 is covered with a hard steel pipe 6, and a hard cap 5 made of steel is attached to the lower end. The outer periphery of the piston rod is hard to wear, and even if the lower end collides with the flange of the workpiece 4, the piston rod is not damaged, and has the advantage of high wear resistance and durability. Furthermore, even if the outer periphery of the piston rod and the workpiece 4 come into contact, insulation is ensured by the insulating thin film 7, and there is an advantage that there is no reduction in welding strength due to shunt flow.
また、絶縁薄膜７はピストンロツド本体３に鋼
管６を強固に固着する接着材層を兼ねるものであ
る。 The insulating thin film 7 also serves as an adhesive layer for firmly fixing the steel pipe 6 to the piston rod body 3.
以上説明したスポツトガン電極の絶縁構造の製
造方法によれば、絶縁薄膜を薄くかつ均一に形成
することが短時間に容易にできるから、加工コス
ト的にも有利であり安価に製造できるという優れ
た効果がある。
According to the method for manufacturing the insulating structure of the spot gun electrode described above, it is possible to easily form a thin and uniform insulating film in a short time, which is advantageous in terms of processing cost and has the excellent effect of being able to be manufactured at low cost. There is.
第１図ないし第３図は本発明の一実施例を示
し、第１図はＣ型ガンの側面図、第２図はピスト
ンロツド先端部の分解図、第３図は真空充填装置
の断面図であり、第４図は従来のＣ型ガンの側面
図である。
１……スポツト電極、２……エアシリンダ、３
……ピストンロツド本体、４……被加工物、５…
…キヤツプ、６……鋼管、７……絶縁薄膜、１４
……液状樹脂接着剤。
Figures 1 to 3 show one embodiment of the present invention; Figure 1 is a side view of a C-type gun, Figure 2 is an exploded view of the tip of the piston rod, and Figure 3 is a sectional view of the vacuum filling device. 4 is a side view of a conventional C type gun. 1...Spot electrode, 2...Air cylinder, 3
... Piston rod body, 4 ... Workpiece, 5 ...
... Cap, 6 ... Steel pipe, 7 ... Insulating thin film, 14
...Liquid resin adhesive.
Claims (1)
にキヤツプを取付けたピストンロツド本体を嵌挿
し、次いで上記キヤツプを上側にして、電気絶縁
特性を有する液状樹脂からなる接着剤を上記鋼管
の面取り加工された端面と上記キヤツプとの間隙
から、鋼管とピストンロツド本体との間の微少間
隙に真空充填し、そして、充填された液状樹脂接
着剤を経時硬化あるいは熱硬化させて鋼管とピス
トンロツド本体とを接着することを特徴とするス
ポツトガン電極の絶縁構造の製造方法。1. A piston rod body with a cap attached to the tip is inserted into a steel pipe with a chamfered inner diameter at the tip, and then, with the cap facing upward, an adhesive made of a liquid resin having electrical insulation properties is applied to the chamfered inner diameter of the steel tube. The small gap between the steel pipe and the piston rod body is filled with vacuum from the gap between the end face and the cap, and the filled liquid resin adhesive is cured over time or heat to bond the steel pipe and the piston rod body. A method for manufacturing an insulating structure for a spot gun electrode, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60001730A JPS61162284A (en) | 1985-01-09 | 1985-01-09 | Insulating structure for spot gun electrode and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60001730A JPS61162284A (en) | 1985-01-09 | 1985-01-09 | Insulating structure for spot gun electrode and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61162284A JPS61162284A (en) | 1986-07-22 |
| JPH0349671B2 true JPH0349671B2 (en) | 1991-07-30 |
Family
ID=11509675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60001730A Granted JPS61162284A (en) | 1985-01-09 | 1985-01-09 | Insulating structure for spot gun electrode and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61162284A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8991402B2 (en) | 2007-12-18 | 2015-03-31 | Pax Labs, Inc. | Aerosol devices and methods for inhaling a substance and uses thereof |
| US9408416B2 (en) | 2011-08-16 | 2016-08-09 | Pax Labs, Inc. | Low temperature electronic vaporization device and methods |
| US9549573B2 (en) | 2013-12-23 | 2017-01-24 | Pax Labs, Inc. | Vaporization device systems and methods |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5818686U (en) * | 1981-07-31 | 1983-02-04 | 日産車体株式会社 | spot welder |
-
1985
- 1985-01-09 JP JP60001730A patent/JPS61162284A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8991402B2 (en) | 2007-12-18 | 2015-03-31 | Pax Labs, Inc. | Aerosol devices and methods for inhaling a substance and uses thereof |
| US9408416B2 (en) | 2011-08-16 | 2016-08-09 | Pax Labs, Inc. | Low temperature electronic vaporization device and methods |
| US9549573B2 (en) | 2013-12-23 | 2017-01-24 | Pax Labs, Inc. | Vaporization device systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61162284A (en) | 1986-07-22 |
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