JPS62275583A - Cylinder gun for spot welding - Google Patents

Cylinder gun for spot welding

Info

Publication number
JPS62275583A
JPS62275583A JP61118536A JP11853686A JPS62275583A JP S62275583 A JPS62275583 A JP S62275583A JP 61118536 A JP61118536 A JP 61118536A JP 11853686 A JP11853686 A JP 11853686A JP S62275583 A JPS62275583 A JP S62275583A
Authority
JP
Japan
Prior art keywords
face
cylinder
sealing
contact
cylinder body
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
Application number
JP61118536A
Other languages
Japanese (ja)
Inventor
Yoshio Sato
良夫 佐藤
Yoji Funai
船井 洋二
Shinichiro Shibusawa
渋沢 慎一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dengensha Toa Co Ltd
Original Assignee
Dengensha Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dengensha Manufacturing Co Ltd filed Critical Dengensha Manufacturing Co Ltd
Priority to JP61118536A priority Critical patent/JPS62275583A/en
Publication of JPS62275583A publication Critical patent/JPS62275583A/en
Pending legal-status Critical Current

Links

Landscapes

  • Resistance Welding (AREA)

Abstract

PURPOSE:To prevent the breakdown of the sealing face due to the roughness of a feeding contact face and to extend the device life by sealing the contact forming a current passage inside a sealing chamber and making the feeding contact face and sealing contact face independent. CONSTITUTION:A sealed chamber D is formed by the base part 6 transferring to a tubular piston 3 from a movable rod 2 and the bulkhead 5 fixed to a rod 2 and an annular contact 7 is arranged to the inner part. The contact 7 is pressed to the inner face of the cylinder main body 1 and base part 6 by a pressing means 8 to form a electric passage. On the other hand, a dust seal 13 is provided on the outer periphery of the bulkhead 5 and an air seal 14 on the outer periphery of the tubular piston 3 respectively. Since the feeding contact face and sealing face are made independent the sealing face is not damaged with the roughness of the feeding slide face due to the repeated uses and the device service life can be extended.

Description

【発明の詳細な説明】 3、発明の詳細な説明 (産業上の利用分野) 本発明は、たとえば、マルチ・スポット溶接ガン、また
はスタンド・ガン等に使用されるスポット溶接用シリン
ダ・ガンの改良に関し、さらに詳しくは、溶接トランス
からの溶接電流を、シリンダ内部の軸部を通して電極チ
ップに給電するに 必要な通電経路を構成したシリンダ
・ガンに関する。
Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention is an improvement of a spot welding cylinder gun used for, for example, a multi-spot welding gun or a stand gun. More specifically, the present invention relates to a cylinder gun that has a current conduction path necessary for feeding welding current from a welding transformer to an electrode tip through a shaft inside the cylinder.

(従来の技術) 周知のように、マルチ・スポット溶接カン等には、電極
チップに電流を給電するために、二次ケーブルやフレキ
シブルな導電部材等の外部給電接続部材が用いられてき
た。
(Prior Art) As is well known, external power supply connection members such as secondary cables and flexible conductive members have been used in multi-spot welding cans and the like to supply current to electrode tips.

このような給電部材は、前記溶接ガンの縦方向の動きに
応じて、伸縮、屈曲運動が強要され、さらには、抵抗発
熱等も加わり、はなはだしい損耗を来たし、電流損失に
よる溶接品質の低下を招く。したがって、溶接品質を維
持するためには、二次ケーブル等の診断や交換作業を頻
繁に行わなければならない。
Such power supply members are forced to expand, contract, and bend in response to the vertical movement of the welding gun, and are also subjected to resistive heat generation, resulting in significant wear and tear and deterioration of welding quality due to current loss. . Therefore, in order to maintain welding quality, it is necessary to frequently diagnose and replace secondary cables, etc.

近時、二次ケーブル等の劣化、断線に伴う交換作業によ
るライン稼動の低下を防くために、外部給電接続部材を
使わずに、シリンダ内部に給電機構を内臓したいわゆる
軸給電式フィクスチャーシリンダ・ガンの開発が進めら
れてきた。
In recent years, in order to prevent deterioration of secondary cables, etc. and deterioration of line operation due to replacement work due to disconnection, so-called shaft-powered fixture cylinders have been developed that have a built-in power supply mechanism inside the cylinder without using external power supply connection members.・The development of cancer has progressed.

これまでに提案されたいくつかの軸給電式フィクスチャ
ーシリンダ・ガンを挙げると、たとえば、シリンダケー
ス内でピストンロッドを囲むように配置された締付接点
が、加圧リングの押圧力で前記ピストンウッド外周面と
一端が通電ケーブルに固着された接点保持台とに押圧、
接触して、前記ウッドに電気的な通電路を形成したシリ
ンダ(実開昭59−102275号公報)が知られてお
り、またシリンダケース内に設けたフローティング部材
に、ピストンロッドを囲むようにして集電片を配置し、
この集電片と前記フローティング部材に位置固定した、
導電部材とを対向配置し、シリンダ内のピストンが前進
したときに、集電片が導電部材とピストンロッドとに接
触して導通路を形成するシリンダ(実開昭59−856
82号公報)等が知られているところである。
To name a few shaft-powered fixture cylinder guns that have been proposed so far, for example, a tightening contact placed so as to surround a piston rod within a cylinder case is used to tighten the piston by the pressing force of a pressure ring. Press the outer peripheral surface of the wood and the contact holder with one end fixed to the current-carrying cable.
A cylinder is known (Japanese Utility Model Application Publication No. 59-102275) in which the wood is in contact with the wood to form an electrically conductive path, and a floating member provided in the cylinder case surrounds the piston rod to collect current. Place the pieces;
fixed in position to the current collector piece and the floating member;
A cylinder in which a conductive member is disposed facing each other, and when a piston in the cylinder moves forward, a current collecting piece contacts the conductive member and the piston rod to form a conduction path (Utility Model No. 59-856
82) etc. are known.

(発明が解決しようとする問題点) しかしながら、これら従来のものは、いずれもシリンダ
ウッドの密接摺動部が給電接触面とシール接触面の両方
を兼ねているため、摺動給電を繰り返すうち、シリンダ
内に供給される流体中の塵埃、水分、その他の異物の混
入等により摺動部の表面状態が粗くなるうえ、シール接
触面の損傷を助長し、加圧シリンダ内の気密性は決定的
破壊を受け、致命的となる。
(Problems to be Solved by the Invention) However, in all of these conventional systems, the close sliding part of the cylinder wood serves as both the power supply contact surface and the seal contact surface, so as the sliding power supply is repeated, The surface condition of the sliding parts becomes rough due to the contamination of dust, moisture, and other foreign substances in the fluid supplied to the cylinder, and this also promotes damage to the seal contact surface, making it impossible to maintain airtightness inside the pressurized cylinder. Destroyed and fatal.

(問題を解決するための手段) 前記の問題を解決するための手段を第1図、の実施例を
用いて以下に説明する。
(Means for solving the problem) Means for solving the above problem will be explained below using the embodiment shown in FIG.

本発明は、マルチスポット溶接ガン、あるいはスタンド
ガン等に用いられる、いわゆるフィクスチャーシリンダ
・ガンに関し、シリンダ本体(1)の前方に可動ウッド
(2)を有する管状ピストン(3)が、シリンダ本体の
後方に形成された加圧室(A)の空気圧によって前記可
動ウッドと一体に動き得るようになし、前記管状ピスト
ンの内側には、シリンダ本体の後方に固定された固定ピ
ストン(4)を挿入して管状ピストンの中空内に加圧室
(B)及び戻し室(C)を形成すると共に、前記可動ロ
ッド(2)の外周には、シリンダ本体の内側を摺動し得
る隔壁(5)を固着し、しかもこの隔壁と前記可動ウッ
ドから管状ピストンに移る基部(6)との間に形成され
た密閉室りには、前記シリンダ本体の内面とこれに交わ
る方向の基部側面との間に電流通電路を形成するコンタ
クタ(7)とその押圧手段(8)とを内設したものであ
る。
The present invention relates to a so-called fixture cylinder gun used for multi-spot welding guns, stand guns, etc., in which a tubular piston (3) having a movable wood (2) in front of a cylinder body (1) A fixed piston (4) fixed to the rear of the cylinder body is inserted inside the tubular piston so as to be able to move together with the movable wood by air pressure in a pressurizing chamber (A) formed at the rear. A pressurizing chamber (B) and a return chamber (C) are formed in the hollow of the tubular piston, and a partition wall (5) that can slide on the inside of the cylinder body is fixed to the outer periphery of the movable rod (2). Moreover, in the sealed chamber formed between this partition wall and the base (6) transferring from the movable wood to the tubular piston, there is a current conduction between the inner surface of the cylinder body and the side surface of the base in the direction that intersects with the inner surface of the cylinder body. A contactor (7) forming an electric path and its pressing means (8) are installed inside.

(作用) そして、本発明は、フィクスチャーシリンダの縦方向に
移動する可動ウッドへの給電接触部をシール接触面と同
一面上に配置しないように、実質的には、可動ロッドか
ら管状ピストンに移る基部と、この基部の前方に適間隔
の距離を経だてて可動ロッドに固着した隔壁との間に形
成した密封室に、前記シリンダ内面と前記基部とに適当
な付勢力で押圧、接触するコンタクタを挿入して、可動
ウッドに電極チップへの電流給電通路を形成したから、
給電接触面に生じる表面粗さによって、シール接触面を
損傷させるという弊害を防止し、シリンダ・ガンの寿命
を延長すると共に、軸給電機構の筒素化を図り、シリン
ダ径を細くすることができる。
(Function) The present invention substantially connects the movable rod to the tubular piston so that the power supply contact portion to the movable wood that moves in the vertical direction of the fixture cylinder is not disposed on the same plane as the seal contact surface. The inner surface of the cylinder and the base are pressed with an appropriate urging force into a sealed chamber formed between the movable base and a partition wall fixed to the movable rod at an appropriate distance in front of the base. By inserting a contactor into the movable wood to form a current feed path to the electrode tip,
This prevents damage to the seal contact surface due to surface roughness on the power supply contact surface, extends the life of the cylinder/gun, and allows the shaft power supply mechanism to be made into a cylindrical element, making it possible to reduce the cylinder diameter. .

(実施例) 第1図は、本発明にかかるスポット溶接用シリンダ・ガ
ンの実施例である。■はシリンダ本体で、その後部に固
着されたアダプタ17が溶接トランス(図示省略)に接
触された二次導体18にナツトNを介して締め付は固定
される。
(Embodiment) FIG. 1 shows an embodiment of a spot welding cylinder gun according to the present invention. (2) is a cylinder body, and an adapter 17 fixed to the rear thereof is tightened and fixed via a nut N to a secondary conductor 18 which is in contact with a welding transformer (not shown).

2は、シリンダ本体の前方において移動し得る可動ウッ
ドで、この可動ロッドの外周には、シリンダ本体と可動
ウッドの空間をうめるスペーサガイド16が固着されて
いる。
A movable wood 2 is movable in front of the cylinder body, and a spacer guide 16 is fixed to the outer periphery of this movable rod to fill the space between the cylinder body and the movable wood.

3は、管状ピストンで、可動ウッドと一体に構成され、
シリンダ本体の後方に形成された流通路P1と連通した
加圧室Aの空気圧と後述する管状ピストン内の加圧室B
の空気圧の圧力の総和によって動き得る。4は、上記管
状ピストンの内部に挿入された固定ピストンで、シリン
ダ本体後部に固定されたロッド9と一体に構成され、固
定ロッド9の内部に形成の上記流通路PIと連通した加
圧室B及び上記ロッド内部に形成された他の流通路P2
と連通した戻し室Cの空気圧により上記管状ピストンが
移動し得るように構成されている。
3 is a tubular piston, which is integrated with a movable wood;
Air pressure in a pressurizing chamber A that communicates with a flow path P1 formed at the rear of the cylinder body and a pressurizing chamber B in a tubular piston, which will be described later.
can be moved by the sum of the air pressures. Reference numeral 4 denotes a fixed piston inserted into the tubular piston, which is integrated with a rod 9 fixed to the rear part of the cylinder body, and has a pressurizing chamber B communicating with the flow path PI formed inside the fixed rod 9. and another flow path P2 formed inside the rod.
The tubular piston is configured to be movable by air pressure in a return chamber C communicating with the return chamber C.

5は可動ロッド2から管状ピストン3に移る基部6の前
方に、わずかな間隔lをもつ密封室りを形成する隔壁で
、可動ロッド2の外周に固着され、可動ロッドと共に動
きシリンダ内面を摺動し得る。上記密封室りの中には、
外部からの水、油等の侵入や可動ロッド内部冷却によっ
て生じる給電面の結露を防ぐために導電性のグリスが封
入されている。7は、可動ロッド2を取り巻くように、
上記密封室り内にリング状に配置されたコンタクタで、
密封室りに挿入した押圧手段8、例えばスプリングS等
の弾力を受けた加圧リング10のテーパ面の付勢力によ
って常時、コンタクタ7をシリンダ本体内面と基部6と
に均一な力で押圧接触してシリンダ本体から可動ロッド
へ通じる電気的な接触回路を構成する。11は、可動ロ
ッド2の先端に嵌入したチップホルダである。12は、
チップホルダ11に嵌入した電極チップである。13は
、隔壁の外周に嵌入したダストシールで、密封室内への
異物の侵入を防止する。14は、管状ピストン3及び固
定ピストン4の外周に嵌入したエアシールである。15
.15” は冷却用水冷バイブで、固定ロッド9及び可
動ロッド2の内部を貫通し、電極チップへ冷却水を供給
し、給電部材の温度上昇を防止する。
Reference numeral 5 denotes a partition wall that forms a sealed chamber with a small distance l in front of the base 6 that moves from the movable rod 2 to the tubular piston 3. The partition wall 5 is fixed to the outer circumference of the movable rod 2 and moves together with the movable rod and slides on the inner surface of the cylinder. It is possible. Inside the above sealed room,
Conductive grease is sealed in order to prevent water, oil, etc. from entering from the outside and condensation on the power supply surface caused by internal cooling of the movable rod. 7 surrounds the movable rod 2,
A contactor arranged in a ring shape inside the sealed chamber,
The contactor 7 is constantly pressed into contact with the inner surface of the cylinder body and the base 6 with a uniform force by the biasing force of the tapered surface of the pressure ring 10 which is subjected to the elasticity of the pressure means 8 inserted into the sealed chamber, such as a spring S, etc. This constitutes an electrical contact circuit leading from the cylinder body to the movable rod. 11 is a tip holder fitted into the tip of the movable rod 2. 12 is
This is an electrode chip fitted into a chip holder 11. A dust seal 13 is fitted around the outer periphery of the partition wall to prevent foreign matter from entering the sealed chamber. 14 is an air seal fitted around the outer periphery of the tubular piston 3 and fixed piston 4. 15
.. 15'' is a water-cooled vibrator for cooling, which penetrates the inside of the fixed rod 9 and the movable rod 2, supplies cooling water to the electrode chip, and prevents the temperature of the power supply member from rising.

以上の構成から本発明の詳細な説明する。The present invention will be explained in detail based on the above configuration.

第1図は、加圧室A及びBのエアを流通路P。FIG. 1 shows a flow path P for air in pressurized chambers A and B.

から排気し、流通路P2から管状ピストン内の戻し室C
にエアを供給し、管状ピストン3したがって可動ロッド
と共に電極チップ12を所定の開放位置に戻した状態を
示している。今、図の状態から、戻し室Cのエアを排気
し、加圧室A及びBにエアを供給すると、各加圧室A及
び已に供給されたエアは、管状ピストン3と固定ピスト
ン4との有効加圧面積の総和の加圧力を付勢し、管状ピ
ストン3を可動ロッド2と共に前進させ、電極チップ1
2の先端を被溶接物(図示省略)に当接し、被溶接物を
電極間で加圧する。次いで、二次導体18からシリンダ
本体1を通して溶接電流が供給され、電流はコンタクタ
7を介して管状ピストン3の基部6を通り可動ロッド2
に流れ、電極チップ間の溶接部を溶隔し、ナゲツトを形
成する。
from the flow path P2 to the return chamber C in the tubular piston.
The figure shows the state in which the electrode tip 12 is returned to the predetermined open position together with the tubular piston 3 and therefore the movable rod. Now, from the state shown in the figure, if the air in the return chamber C is exhausted and air is supplied to the pressurizing chambers A and B, the air supplied to each pressurizing chamber A and B will be transferred to the tubular piston 3 and the fixed piston 4. The tubular piston 3 is moved forward together with the movable rod 2 by applying a pressing force equal to the total effective pressurizing area of the electrode tip 1.
2 is brought into contact with the object to be welded (not shown), and the object to be welded is pressurized between the electrodes. A welding current is then supplied from the secondary conductor 18 through the cylinder body 1, and the current passes through the base 6 of the tubular piston 3 via the contactor 7 to the movable rod 2.
It flows through the weld between the electrode tips and forms a nugget.

溶接完了後は、電極チップ12を被溶接部から開放する
ため、シリンダ操作を再び第1図の状態に戻し、次の溶
接動作に備える。
After welding is completed, in order to release the electrode tip 12 from the part to be welded, the cylinder operation is returned to the state shown in FIG. 1 to prepare for the next welding operation.

(発明の効果) 以上、本発明によれば、マルチ・スポット溶接ガンまた
はスタンド・ガン等のスポット溶接用シリンダ・ガンに
、可動ロッドを有する管状ピストンを備えると共に、こ
の管状ピストン内に固定ピストンを挿入し、かつ可動ロ
ッドから管状ピストンに移る基部の前方に、シリンダ本
体と基部とに電流通電路を形成するコンタクタを密閉す
るための密封室を設け、コンタクタの給電接触面とシー
ル接触面とを独立させたから、従来のように給電接触面
をシール接触面とを兼ねたことにより生じる摺動部の表
面粗さやシール接触面の損傷を発生するという弊害から
開放され、シリンダ・ガンの寿命を一層延長することが
でき、また軸給電機構をコンパクトに構成することがで
き、シリンダ・ガンの外径を細(することができる。し
たがってマルチスポット溶接機などガン取付スペースが
狭い場合にも有効である。
(Effects of the Invention) As described above, according to the present invention, a cylinder gun for spot welding such as a multi-spot welding gun or a stand gun is provided with a tubular piston having a movable rod, and a fixed piston is disposed within the tubular piston. A sealed chamber is provided in front of the base that is inserted and moves from the movable rod to the tubular piston to seal the contactor that forms a current carrying path between the cylinder body and the base, and the power supply contact surface and the seal contact surface of the contactor are sealed. Since it is made independent, it is freed from the problems of surface roughness of the sliding part and damage to the seal contact surface caused by the power supply contact surface also serving as the seal contact surface as in the past, and the life of the cylinder/gun is further extended. It can be extended, the shaft power feeding mechanism can be configured compactly, and the outer diameter of the cylinder/gun can be made thinner. Therefore, it is also effective in cases where the gun installation space is narrow, such as in multi-spot welding machines. .

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、本発明の一実施例を示す断面図である。 第2図は、第1図イーイ矢視図、 〔符号の説明〕 1・・・・シリンダ本体  2・・・・可動口ソ3・・
・・管状ピストン  4・・・・固定ピストン5・・・
・隔壁      6・・・・基部7・・・・コンタク
タ   8・・・・押圧手段9・・・・固定ロッド
FIG. 1 is a sectional view showing one embodiment of the present invention. Figure 2 is a view from arrow E in Figure 1, [Explanation of symbols] 1... Cylinder body 2... Movable mouthpiece 3...
・・Tubular piston 4・・Fixed piston 5・・・
- Bulkhead 6... Base 7... Contactor 8... Pressing means 9... Fixed rod

Claims (1)

【特許請求の範囲】[Claims] シリンダ本体と、このシリンダ本体の前方に可動ロッド
を有し、しかもシリンダ本体の後方に形成された加圧室
の空気圧によって前記可動ロッドと一体に動き得る管状
ピストンと、この管状ピストン内に同心的に挿入され、
シリンダ本体の後方に固定ロッドを有する固定ピストン
とを装設し、前記可動ロッドの外周に、シリンダ本体の
内壁を摺動し得る隔壁を固着し、該隔壁と可動ロッドと
の間に、密封室を形成し、さらにこの密閉室には、前記
シリンダ本体と基部との間に電流通電路を形成するコン
タクタとその押圧手段を内設してなるスポット溶接用シ
リンダ・ガン。
A cylinder body, a tubular piston having a movable rod in front of the cylinder body and movable together with the movable rod by air pressure in a pressurizing chamber formed at the rear of the cylinder body; inserted into
A fixed piston having a fixed rod is installed at the rear of the cylinder body, a partition wall that can slide on the inner wall of the cylinder body is fixed to the outer periphery of the movable rod, and a sealed chamber is provided between the partition wall and the movable rod. A cylinder gun for spot welding, further comprising a contactor forming a current conducting path between the cylinder body and the base and a pressing means for the contactor in the sealed chamber.
JP61118536A 1986-05-23 1986-05-23 Cylinder gun for spot welding Pending JPS62275583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61118536A JPS62275583A (en) 1986-05-23 1986-05-23 Cylinder gun for spot welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61118536A JPS62275583A (en) 1986-05-23 1986-05-23 Cylinder gun for spot welding

Publications (1)

Publication Number Publication Date
JPS62275583A true JPS62275583A (en) 1987-11-30

Family

ID=14739021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61118536A Pending JPS62275583A (en) 1986-05-23 1986-05-23 Cylinder gun for spot welding

Country Status (1)

Country Link
JP (1) JPS62275583A (en)

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