JPS628942Y2 - - Google Patents
Info
- Publication number
- JPS628942Y2 JPS628942Y2 JP17999582U JP17999582U JPS628942Y2 JP S628942 Y2 JPS628942 Y2 JP S628942Y2 JP 17999582 U JP17999582 U JP 17999582U JP 17999582 U JP17999582 U JP 17999582U JP S628942 Y2 JPS628942 Y2 JP S628942Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- piston
- piston rod
- contact
- resistance welding
- 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
Links
- 238000003466 welding Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 238000005192 partition Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は抵抗溶接装置用押圧シリンダに関し、
さらに詳しくはシリンダ内を摺動移動するピスト
ンの押圧力をワークに加える際に、該シリンダ内
に設定した導電経路を介して給電することを可能
にした押圧シリンダに関するものである。[Detailed description of the invention] The present invention relates to a pressure cylinder for resistance welding equipment.
More specifically, the present invention relates to a pressing cylinder that makes it possible to supply electricity via a conductive path set within the cylinder when applying the pressing force of a piston sliding inside the cylinder to a workpiece.
従来、スポツト溶接等を実施する際には、第１
図に示すように抵抗溶接装置が広く用いられてい
るが、通常金属ワークＡに大電流を供給するた
め、シリンダより突出するピストンロツドａ先端
に給電ケーブルに接続ｂされたフレキシブルチユ
ーブｃを連結して一方側の電極ｄとし、他方側に
固設した電極ｅとの間に前記ワークＡを挾持して
大電流を流し、溶接作業を行なつている。 Conventionally, when performing spot welding, etc., the first
As shown in the figure, resistance welding equipment is widely used. Usually, in order to supply a large current to a metal workpiece A, a flexible tube c connected to a power supply cable b is connected to the tip of a piston rod a protruding from a cylinder. The workpiece A is held between an electrode d on one side and an electrode e fixedly installed on the other side, and a large current is applied to perform welding work.
上記装置にあつては、溶接部の面圧を上げる必
要があるため、シリンダ内に所定の流体圧力を加
えてピストンロツドａを前進および後退させるこ
とになるが、必然的にピストンロツドａ先端に連
結されたフレキシブルチユーブｃもピストンロツ
ドａの動きに応動して、作業中は常に前進および
後退動作を繰り返すことになる。したがつて、該
フレキシブルチユーブｃの経時的な損傷を免がれ
得ず、頻繁に取替交換をしなければならず、作業
能率の悪化を招来する外、該フレキシブルチユー
ブｃの介装スペースを確保する必要があるために
装置の小型化に対する障害となつていた。さらに
該フレキシブルチユーブｃの可動部切損による漏
電の危険性も有している。 In the above device, it is necessary to increase the surface pressure of the welding part, so a predetermined fluid pressure is applied inside the cylinder to move the piston rod a forward and backward. The flexible tube c also responds to the movement of the piston rod a and constantly repeats forward and backward movements during work. Therefore, the flexible tube c cannot be avoided from being damaged over time and must be replaced frequently, which not only leads to deterioration of work efficiency but also reduces the space for installing the flexible tube c. This has been an obstacle to downsizing the device. Furthermore, there is a risk of electrical leakage due to breakage of the movable part of the flexible tube c.
一方、上記欠点に対処すべく、特願昭54−
84431号（特開昭56−9082号）公報に記載された
抵抗溶接装置も提供されているが、この装置によ
ればワークに対する押圧シリンダが給電シリンダ
に兼用され、該給電シリンダのシリンダケースの
内面と摺動するピストンに併設された集電プレー
トが電極に導通するロツドに接合され、ピストン
に係合して前記シリンダケース内面に当接離反可
能な集電リングが集電プレートに導通しているこ
とを特徴としている。しかしながら、この装置の
場合、シリンダの内面を通電面としているので、
押圧シリンダの最外殼であるシリンダケースに電
流が流れているため漏電の危険性があり、たとえ
ばワークがシリンダケースに触れるような部位へ
の溶接が不可能であるという欠点がある。さらに
前記集電プレートのシリンダ内面への押圧は液圧
によつて行なわれており、この液圧が変動すると
集電プレートのシリンダ内面への押圧力も変化す
ることになり、仮に液圧が弱すぎた場合には集電
プレートが溶着したり異常摩滅する惧れがある。 On the other hand, in order to deal with the above drawbacks, the patent application
There is also a resistance welding device described in No. 84431 (Japanese Unexamined Patent Publication No. 56-9082), but according to this device, the press cylinder for the work is also used as a power supply cylinder, and the inner surface of the cylinder case of the power supply cylinder is A current collector plate attached to a piston that slides is connected to a rod that is electrically connected to an electrode, and a current collector ring that engages with the piston and can come into contact with and separate from the inner surface of the cylinder case is electrically connected to the current collector plate. It is characterized by However, in the case of this device, the inner surface of the cylinder is the current-carrying surface, so
Since current flows through the cylinder case, which is the outermost shell of the press cylinder, there is a risk of electrical leakage, and there is a drawback that, for example, it is impossible to weld to parts where the workpiece touches the cylinder case. Furthermore, the pressure of the current collector plate against the inner surface of the cylinder is performed by hydraulic pressure, and if this fluid pressure fluctuates, the pressing force of the current collector plate against the inner surface of the cylinder will also change. If it is too much, there is a risk that the current collector plate may be welded or abnormally worn.
本考案は上記のごとき従来の抵抗溶接装置に存
する各種欠点を解消した装置の提供を目的とする
ものであり、この目的を達成するためにシリンダ
内を摺動移動するピストンと、該ピストンに固着
されて前後進するピストンロツドの前端に設けた
電極部材と、前記ピストンロツドと変位可能に係
合されてシリンダ内を摺動移動する接点部材と、
該接点部材が前進位置に達した際に導電経路を形
成するように前記シリンダ内の軸上に装着した導
電部材とからなることを特徴とする抵抗溶接装置
用押圧シリンダを提供せんとするものである。 The purpose of the present invention is to provide a device that eliminates the various drawbacks of conventional resistance welding devices as described above, and in order to achieve this purpose, a piston that slides within a cylinder and a an electrode member provided at the front end of a piston rod that is moved back and forth by the piston rod; a contact member that is displaceably engaged with the piston rod and slides within the cylinder;
It is an object of the present invention to provide a press cylinder for a resistance welding device, comprising a conductive member mounted on a shaft within the cylinder so as to form a conductive path when the contact member reaches a forward position. be.
以下、本考案の一実施例を第２図にしたがつて
説明すると、１は固定ボルトであつて、全体的に
２で示す押圧シリンダを抵抗溶接装置本体に固定
している。３はヘツドカバーであり、該ヘツドカ
バー３の外周上１箇所に電源ケーブルが接続され
て溶接用大電流を通電する。押圧シリンダ２の中
心軸上には後端を前記ヘツドカバー３に連結した
パイプ状の導電部材４が設けられる。該導電部材
４の前端は環状テーパ面４ａを介して後端より大
径に形成されてなる。５はシリンダケースであつ
て、前記ヘツドカバー３とボルト６により固定さ
れる。７は圧縮空気流入口、８はシリンダ２内を
摺動移動するピストン、９はボトムカバーであ
り、該ボトムカバー９内にピストン戻し用の圧縮
空気流入口１０が設けられる。前記ボトムカバー
９とシリンダケース５はボルト１１によつて固定
される。１２は前記ピストン８と一体に形成した
パイプ状のピストンロツドであり、ボトムカバー
９の軸孔から前方へ突出するとともに、内周面に
張設した絶縁シート１３を介して前記導電部材４
の前端大径部外周面上を摺動移動する。該ピスト
ンロツド１２の後端には、該ピストンロツド１２
と円弧形状部分１４ａで接触し、変位可能すなわ
ち回転可能に軸着された接点部材１４を取り付け
てあり、該部材１４を外周より押圧するガータス
プリング１５，１６の作用によつて、接点部材１
４内周の接点１４ｂが導電部材４に対して図示の
位置において接触するように構成する。また１
７，１８は各各導電部材４およびピストンロツド
１２の軸孔内に配された仕切りパイプであつて、
該パイプ１７，１８によつて内外周に仕切られる
軸孔空間１９，２０の各各をヘツドカバー３に設
けた冷却水流入口２１もしくは同流出口２２に連
通してなる。 Hereinafter, one embodiment of the present invention will be described with reference to FIG. 2. Reference numeral 1 denotes a fixing bolt, which fixes a pressing cylinder generally indicated by 2 to the main body of a resistance welding device. 3 is a head cover, and a power cable is connected to one location on the outer periphery of the head cover 3 to supply a large current for welding. A pipe-shaped conductive member 4 whose rear end is connected to the head cover 3 is provided on the central axis of the pressing cylinder 2. The front end of the conductive member 4 is formed to have a larger diameter than the rear end via an annular tapered surface 4a. Reference numeral 5 denotes a cylinder case, which is fixed to the head cover 3 with bolts 6. 7 is a compressed air inlet, 8 is a piston that slides within the cylinder 2, 9 is a bottom cover, and a compressed air inlet 10 for returning the piston is provided in the bottom cover 9. The bottom cover 9 and the cylinder case 5 are fixed with bolts 11. Reference numeral 12 denotes a pipe-shaped piston rod integrally formed with the piston 8, which projects forward from the shaft hole of the bottom cover 9 and connects to the conductive member 4 via an insulating sheet 13 stretched over the inner peripheral surface.
It slides on the outer peripheral surface of the large diameter part of the front end. At the rear end of the piston rod 12, the piston rod 12
A contact member 14 is attached which is displaceably, that is rotatably, pivoted and in contact with the arc-shaped portion 14a.The contact member 1
The contact point 14b on the inner periphery of the conductive member 4 is configured to come into contact with the conductive member 4 at the position shown in the figure. Also 1
7 and 18 are partition pipes arranged in the shaft holes of each conductive member 4 and piston rod 12,
Shaft hole spaces 19 and 20 partitioned into inner and outer peripheries by the pipes 17 and 18 are communicated with a cooling water inlet 21 or an outlet 22 provided in the head cover 3, respectively.
上記構成の抵抗溶接装置用押圧シリンダにおい
て、ヘツドカバー３、導電部材４、接点部材１４
ならびにピストンロツド１２は黄銅、クロム銅等
の電気伝導材にて製せられ、接点１４ｂは銀、銅
を主成分とした接点材で製せられ、接点部材１４
と接点１４ｂは電気的、機械的に接合される。シ
リンダケース５はエポキシ樹脂等、または金属表
面に絶縁皮膜を施こしたもの、仕切りパイプ１
７，１８はテフロン等の非伝導材にて製せられ
る。 In the pressure cylinder for a resistance welding device having the above configuration, the head cover 3, the conductive member 4, the contact member 14
The piston rod 12 is made of an electrically conductive material such as brass or chrome copper, and the contact 14b is made of a contact material containing silver or copper as a main component.
and the contact 14b are electrically and mechanically connected. The cylinder case 5 is made of epoxy resin or the like, or a metal surface with an insulating film, and the partition pipe 1
7 and 18 are made of non-conductive material such as Teflon.
今、ヘツドカバー３の外周上１箇所に電源ケー
ブルを接続して溶接用電流を流すと、この電流は
ヘツドカバー３に接合されている導電部材４に伝
えられる。つぎに圧縮空気流入口７よりエアを流
入させるとピストン８および該ピストン８と一体
になるピストンロツド１２が金属ワークＡ側へ移
動し、該ワークＡを押圧開始すると同時に、該ピ
ストンロツド１２の後端に軸着された接点部材１
４も連動して導電部材４の環状テーパ面４ａを通
過した後、接点１４ｂが導電部材４と接触する。
これによりヘツドカバー３から導電部材４、接点
部材１４、ピストンロツド１２の経路で導通し、
金属ワークＡに対する給電が可能となる。ここで
接点部材１４はピストンロツド１２に対して円孤
状部分１４ａで接触しているため、円孤に沿つて
動作可能であり、ガータスプリング１５，１６に
よつて強力な押圧力を保持している。 Now, when a power cable is connected to one location on the outer periphery of the head cover 3 and a welding current is applied, this current is transmitted to the conductive member 4 joined to the head cover 3. Next, when air is introduced from the compressed air inlet 7, the piston 8 and the piston rod 12 integrated with the piston 8 move toward the metal work A, and at the same time as they start pressing the work A, the rear end of the piston rod 12 Pivotally mounted contact member 1
4 also passes through the annular tapered surface 4a of the conductive member 4, and then the contact point 14b comes into contact with the conductive member 4.
As a result, conduction is established through the path from the head cover 3 to the conductive member 4, the contact member 14, and the piston rod 12.
Power can be supplied to the metal work A. Here, since the contact member 14 is in contact with the piston rod 12 at the arc-shaped portion 14a, it is movable along the arc, and a strong pressing force is maintained by the garter springs 15 and 16. .
金属ワークＡに対して抵抗溶接を完了した後、
ボトムカバー９側のピストン戻し用圧縮空気流入
口１０よりエアを供給すると、ピストン８が戻る
とともに、接点部材１４が環状テーパ部４ａにお
いて導電部材４より開離して前記導電路が断たれ
る。導電部材４とピストンロツド１２間には絶縁
シート１３を介在させてあるので、抵抗溶接完了
後、不要に導電する惧れはまつたくない。 After completing resistance welding on metal workpiece A,
When air is supplied from the piston return compressed air inlet 10 on the bottom cover 9 side, the piston 8 returns and the contact member 14 separates from the conductive member 4 at the annular tapered portion 4a, cutting off the conductive path. Since the insulating sheet 13 is interposed between the conductive member 4 and the piston rod 12, there is no risk of unnecessary conduction after resistance welding is completed.
上記構成の抵抗溶接装置用押圧シリンダによれ
ば溶接電極間に溶接電流を通電する給電シリンダ
を兼用しており、さらに可動ピストン側電極に対
するフレキシブルチユーブを不要としているの
で、該フレキシブルチユーブの欠損にもとづく断
線、短絡等の事故をなくし、かつ該チユーブの交
換作業を要しないので作業能率の向上に寄与でき
るばかりでなく、装置の小型化を図ることができ
る。一方、導電経路がシリンダ内の軸上に位置し
ており、従来装置のごとくシリンダケースを導電
経路中に含んでいないので、漏電の危険性はまつ
たく生じない利点があり、仮に金属ワークがシリ
ンダケースに触れても問題は生じない。さらに前
記導電経路中の接点部材の押圧は、バネ力によつ
ているため、液圧の変動によつて押圧力に変動が
発生せず、該接点部材の異常摩耗を惹起する惧れ
がない。 According to the pressure cylinder for resistance welding equipment with the above configuration, it also serves as a power supply cylinder for passing welding current between the welding electrodes, and furthermore, there is no need for a flexible tube for the movable piston side electrode, so it is possible to eliminate the need for a flexible tube due to the loss of the flexible tube. Accidents such as disconnections and short circuits are eliminated, and the tube does not need to be replaced, which not only contributes to improved work efficiency but also allows the device to be made more compact. On the other hand, since the conductive path is located on the axis inside the cylinder and does not include the cylinder case in the conductive path unlike conventional equipment, there is no risk of electrical leakage, and even if a metal work is Touching the case will not cause any problems. Further, since the pressing force of the contact member in the conductive path is based on spring force, the pressing force does not fluctuate due to fluctuations in hydraulic pressure, and there is no risk of abnormal wear of the contact member.
以上詳細に説明したように、本考案は従来の抵
抗溶接装置において通常付設されているフレキシ
ブルチユーブを廃止し、押圧シリンダを給電シリ
ンダとして兼用しながら、かつ該押圧シリンダの
軸上に導電経路を形成したことによつて漏電等の
危険性はまつたくないので、安全性に優れるとと
もに装置を小型化する等の特徴を有し、本考案の
実用的効果にはきわめて大なるものがある。 As explained in detail above, the present invention eliminates the flexible tube normally attached to conventional resistance welding equipment, and forms a conductive path on the axis of the pressing cylinder while also using the pressing cylinder as a power supply cylinder. Since there is no risk of electrical leakage or the like due to this, the present invention has features such as excellent safety and miniaturization of the device, and the practical effects of the present invention are extremely large.
図面は本考案の一実施例を示すものであり、第
１図はフレキシブルチユーブを使用した従来装置
の要部説明図、第２図は本考案に係る抵抗溶接装
置用押圧シリンダの半裁断面図である。
１……固定ボルト、２……押圧シリンダ、３…
…ヘツドカバー、４……導電部材、４ａ……環状
テーパ部、５……シリンダケース、７，１０……
圧縮空気流入口、１２……ピストンロツド、１３
……絶縁シート、１４……接点部材、１４ａ……
円孤形状部分、１４ｂ……接点、１５，１６……
ガータスプリング、１７，１８……仕切りパイ
プ。
The drawings show one embodiment of the present invention, and Fig. 1 is an explanatory diagram of the main parts of a conventional device using a flexible tube, and Fig. 2 is a half-cut sectional view of a pressing cylinder for a resistance welding device according to the present invention. be. 1... Fixing bolt, 2... Pressing cylinder, 3...
...Head cover, 4... Conductive member, 4a... Annular taper portion, 5... Cylinder case, 7, 10...
Compressed air inlet, 12...Piston rod, 13
...Insulating sheet, 14...Contact member, 14a...
Arc-shaped portion, 14b... Contact point, 15, 16...
Garta spring, 17, 18... partition pipe.
Claims (1)
トンに固着されて前後進するピストンロツドの前
端に設けた電極部材と、前記ピストンロツドと変
位可能に係合されてシリンダ内を摺動移動する接
点部材と、該接点部材が前進位置に達した際に導
電経路を形成するように前記シリンダ内の軸上に
装着した導電部材とからなることを特徴とする抵
抗溶接装置用押圧シリンダ。 a piston that slides within the cylinder; an electrode member provided at the front end of a piston rod that is fixed to the piston and moves back and forth; a contact member that is displaceably engaged with the piston rod and slides within the cylinder; A press cylinder for a resistance welding device, comprising a conductive member mounted on a shaft within the cylinder so as to form a conductive path when the contact member reaches a forward position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17999582U JPS5985681U (en) | 1982-11-30 | 1982-11-30 | Press cylinder for resistance welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17999582U JPS5985681U (en) | 1982-11-30 | 1982-11-30 | Press cylinder for resistance welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5985681U JPS5985681U (en) | 1984-06-09 |
| JPS628942Y2 true JPS628942Y2 (en) | 1987-03-02 |
Family
ID=30390388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17999582U Granted JPS5985681U (en) | 1982-11-30 | 1982-11-30 | Press cylinder for resistance welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5985681U (en) |
-
1982
- 1982-11-30 JP JP17999582U patent/JPS5985681U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5985681U (en) | 1984-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4861959A (en) | Resistance spot welding gun and transformer assembly | |
| JPS628942Y2 (en) | ||
| US2371185A (en) | Cable connector | |
| JPS628943Y2 (en) | ||
| US2465456A (en) | Welding mechanism | |
| JPS5848275B2 (en) | resistance welding equipment | |
| JPH0248143Y2 (en) | ||
| US4140891A (en) | Articulated resistance welding electrode with universal movement | |
| JPS6268684A (en) | Feeding unit for welding current | |
| US4260868A (en) | Current carrying reciprocable fluid motor | |
| US5276296A (en) | Welding gun apparatus | |
| JPS62156078A (en) | Double pressure jack | |
| CN112548280A (en) | Automatic welding device | |
| JPH0527266Y2 (en) | ||
| GB540988A (en) | Electrode for spot welding | |
| KR200248916Y1 (en) | Connecting piece-improved flexible style of tig welding torch | |
| JPS63224881A (en) | Cylinder gun for spot welding | |
| JPS5856068Y2 (en) | Axial feed cylinder | |
| JPS6110863Y2 (en) | ||
| JPS6325025Y2 (en) | ||
| JPS6229193Y2 (en) | ||
| JP6650043B2 (en) | Electrode tip | |
| CN219005008U (en) | Resistance heat auxiliary welding device | |
| JPS62275583A (en) | Cylinder gun for spot welding | |
| CN214185680U (en) | Automatic welding device |