JPH0367473B2 - - Google Patents
Info
- Publication number
- JPH0367473B2 JPH0367473B2 JP60162200A JP16220085A JPH0367473B2 JP H0367473 B2 JPH0367473 B2 JP H0367473B2 JP 60162200 A JP60162200 A JP 60162200A JP 16220085 A JP16220085 A JP 16220085A JP H0367473 B2 JPH0367473 B2 JP H0367473B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- air
- tip
- piston
- air cylinder
- 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
- 238000003466 welding Methods 0.000 claims description 71
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 12
- 239000000428 dust Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- 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、溶接機、詳細には、被溶接面に付
着するごみ等を排除しながら溶接可能なスポツト
溶接機に係る。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a welding machine, and more particularly to a spot welding machine that can weld while removing dust and the like adhering to a surface to be welded.
（従来の技術）
従来のスポツト溶接機は、特にスポツトガン１
部分は、その側面該略を表す第５図に示すように
アーム２，２と、アーム２，２の先端にシヤンク
５，５を介して取り付ける溶接用チツプ４，４、
支点３、アーム２，２基部相互を内側で連結する
エアシリンダー７、エアシリンダ７に空気を圧
入、排出することで支点３を介して溶接用チツプ
４相互を近接、後退させる加圧バルブ８からな
り、溶接する被溶接物９に対して加圧バルブ８か
ら空気を送入、排出し、加圧、開放することで、
エアシリンダ７を作動させ、エアシリンダ７を作
動させるため使用した空気はそのまま加圧バルブ
８から排出することで、溶接用チツプ４，４で被
溶接物９にスポツト溶接をおこなつていた。(Prior art) Conventional spot welding machines, especially spot guns 1
As shown in FIG. 5, which schematically shows the side view, the parts include arms 2, 2, and welding tips 4, 4 attached to the tips of the arms 2, 2 via shank 5, 5.
An air cylinder 7 connects the fulcrum 3, the bases of the arms 2 and 2 on the inside, and a pressurizing valve 8 that presses air into and discharges air from the air cylinder 7 to bring the welding chips 4 close to and retreat from each other via the fulcrum 3. By supplying and discharging air from the pressurizing valve 8 to the workpiece 9 to be welded, pressurizing and releasing it,
By operating the air cylinder 7 and discharging the air used for operating the air cylinder 7 as it is from the pressurizing valve 8, spot welding is performed on the workpiece 9 using the welding chips 4, 4.
また、実開昭52−158724「抵抗溶接装置」（従来
例１）、実開昭54−143845「スポツト溶接装置」
（従来例２）も知られている。従来例１は、電極
体の周囲もしくは内部に被溶接物相互の接触部分
に向けて気体を噴射する少なくとも１個の噴射口
を有する抵抗溶接装置に係り、従来例２は、エア
ブローパイプを配置し、このパイプを通してスポ
ツト溶接時スポツト溶接部に圧搾空気を吹きか
け、発生有毒ガス等を大気に拡散するようにした
ことを特徴とするスポツト溶接装置に係る。 In addition, Utility Model Application No. 52-158724 "Resistance welding device" (conventional example 1), Utility Model Application No. 54-143845 "Spot welding device"
(Conventional Example 2) is also known. Conventional example 1 relates to a resistance welding device having at least one injection port around or inside the electrode body for injecting gas toward the mutual contact portion of the welded objects, and conventional example 2 relates to a resistance welding device in which an air blow pipe is arranged. The present invention relates to a spot welding apparatus characterized in that compressed air is sprayed through the pipe onto the spot welded portion during spot welding to diffuse generated toxic gas and the like into the atmosphere.
（発明が解決しようとする課題）
従来の溶接機では、溶接用チツプ４，４は被溶
接物９に当接するにとどまるため、溶接面に、ス
ラツジ、ごみ等溶接を妨げる物質が付着していて
も、スラツジ、ごみ等の上から被溶接物９に接
し、そのため溶接不良箇所を生じたり、溶接用チ
ツプ４，４の先端が被溶接物９から、離れなくな
るという課題及び溶接用チツプの寿命を短くする
という課題を生じた。(Problems to be Solved by the Invention) In conventional welding machines, the welding tips 4, 4 only come into contact with the workpiece 9, so substances such as sludge and dirt that interfere with welding are attached to the welding surface. The welding tips 4 come into contact with the workpiece 9 from above sludge, dirt, etc., resulting in poor welding, and problems such as the tips of the welding tips 4, 4 not being able to separate from the workpiece 9, and shortening the lifespan of the welding tips. The problem arose of making it shorter.
スポツト溶接機を人間が操作している場合は、
溶接時に、ごみ等を人間が除去することで溶接不
良は回避可能であるが、ロボツト使用による溶接
時にはその様な解決手段は困難である。又、スポ
ツト溶接除去する必要があるごみ等は、溶接予定
箇所にあるごみ等であつて、それ以外の部分につ
いてまで除去する必要はない。しかしながら、溶
接と別工程でごみの除去をするときは、むしろ必
要部分以外も除去する方が能率的となり、不必要
な作業を要する課題を有した。 If a spot welder is operated by a human,
During welding, it is possible to avoid welding defects by manually removing dust and the like, but such a solution is difficult when welding is performed using a robot. Furthermore, the dust and the like that needs to be removed during spot welding is the dust and the like that is present in the area where welding is planned, and there is no need to remove other parts. However, when removing dust in a process separate from welding, it is more efficient to remove parts other than the necessary parts, which poses the problem of requiring unnecessary work.
他方、溶接を妨害するごみ等は、１ｇ前後のも
のが付着しやすいことを知見した。 On the other hand, it was found that about 1 g of dirt and the like that interfere with welding tend to adhere.
更に、従来例１、２にはスポツト溶接機の先端
に気体吐出口を開口させる旨の記載はあるが、ス
ポツト溶接と気体の吐出を同期させ、効率良くご
みを除去させる物ではなかつた。 Furthermore, although Conventional Examples 1 and 2 include a statement that a gas discharge port is opened at the tip of the spot welding machine, they do not synchronize spot welding and gas discharge to efficiently remove dust.
（課題を解決するための手段）
この発明は、
内部でピストンが摺動され、ピストンにより２
室に区分されるエアシリンダと、エアシリンダの
２室を選択してエアを供給させる空気源と、ピス
トンに連結され先端を開閉自在となるように支点
により支持させるとともに、エアシリンダの一方
の室にエアが供給されピストンが駆動されること
で先端が被溶接物に近接駆動され、エアシリンダ
の他方の室にエアが供給されピストンが駆動され
ることで先端を後退駆動される２本のアームと、
アーム先端に取付けられるシヤンクに固定される
溶接用チツプと、基部はエアシリンダの他方の室
に接続され、先端には溶接用チツプ方向に開口さ
せて設置される気体吐出口を有する通気路とから
なることを特徴とするスポツト溶接機、
を提供する。(Means for Solving the Problems) This invention has a piston that slides inside, and the piston moves two
An air cylinder divided into chambers, an air source that selects and supplies air to two chambers of the air cylinder, and an air source that is connected to a piston and supported by a fulcrum so that its tip can be opened and closed freely, and an air source that supplies air to one of the two chambers of the air cylinder. Air is supplied to the air cylinder and the piston is driven to drive the tip of the two arms close to the workpiece, and air is supplied to the other chamber of the air cylinder and the piston is driven to drive the tip of the two arms backward. and,
A welding tip fixed to a shank attached to the tip of the arm, and a ventilation passage whose base is connected to the other chamber of the air cylinder and whose tip has a gas discharge port opened toward the welding tip. A spot welding machine is provided.
（作用）
エアシリンダの一方の室にエアが供給されピス
トンが駆動されることでアーム先端が被溶接物に
近接駆動される。(Function) Air is supplied to one chamber of the air cylinder and the piston is driven, so that the tip of the arm is driven close to the object to be welded.
このとき通気路は、基部は、スポツトガン先端
が被溶接物に近接駆動されように空気源から一方
の室にエアが供給されたときの、エアの供給がな
されない他方の室に接続されている。さらに、通
気路は先端に溶接用チツプ方向に開口する気体吐
出口を有している。 At this time, the base of the ventilation passage is connected to the other chamber to which air is not supplied when air is supplied from an air source to one chamber so that the tip of the spot gun is driven close to the workpiece. . Furthermore, the ventilation passage has a gas discharge port at its tip that opens toward the welding chip.
そして、エアシリンダ内部でピストンが摺動さ
れ、ピストンによりエアシリンダは２室に区分さ
れ、空気源からはエアシリンダの２室を選択して
エアを供給される。 Then, a piston slides inside the air cylinder, and the piston divides the air cylinder into two chambers, and air is supplied from the air source to two selected chambers of the air cylinder.
そのため、一方の室に供給されるエアによりシ
リンダの他方の室に充満するエアは押圧され、被
溶接物上の溶接面に溶接用チツプが近接されると
同様に、気体吐出口から気体を吐出する。風圧に
より、溶接用チツプ被溶接物との当接部分上の溶
接妨害物を排除する。 Therefore, the air supplied to one chamber presses the air filling the other chamber of the cylinder, and in the same way as when a welding tip is brought close to the welding surface on the workpiece, gas is discharged from the gas discharge port. do. The wind pressure eliminates welding obstructions on the part where the welding chip contacts the workpiece.
エアシリンダの他方の室にエアが供給されピス
トンが駆動されることでアーム先端は、後退駆動
される。 When air is supplied to the other chamber of the air cylinder and the piston is driven, the tip of the arm is driven backward.
（実施例）
この発明の側面概略を表す第１図、第１図の一
部拡大を表す第２図、第３図、第４図に従い説明
する。(Example) The present invention will be explained with reference to FIG. 1, which shows a schematic side view of the invention, and FIGS. 2, 3, and 4, which show partially enlarged views of FIG. 1.
１はスポツトガンであり、支点３を軸としたア
ーム２，２の先端が相互に近接後退可能である
４，４は溶接用チツプであり、スポツトガン１の
アーム２，２先端にシヤンク５，５を介してそれ
ぞれ取り付ける。シヤンク５内には各々溶接用チ
ツプ４の冷却用、水パイプ６を貫通し、矢示方向
に冷却中を送水する。７はエアシリンダーであ
る。ピストン１０で区分されるエアシリンダー７
内の両室は各々、加圧バルブ８とパイプ１１ａ，
１１ｂで連結する。パイプ１１ａは弁機構からな
るクイツクエギゾースト１２によりパイプ１１ｃ
を分枝する。パイプ１１ｃは更に分枝して先端
は、各々の溶接用チツプ４，４付近に開口して取
り付ける。１３は、加圧バルブ８に空気を供給す
る空気源であり、６Kg／cm3で空気を送給する。空
気の代わりに例えば亜鉛等の付着を阻害する気体
を混合して吐出してもよい。パイプ１１ｃの先端
は第３図に示すように溶接用チツプ４の先端に向
けて設置する。溶接用チツプ４が当接したとき接
する被溶接面に向けて設置する気体吐出口の径は
約３mmよりなる。又、気体吐出口と、溶接用チツ
プ４との距離ｌは30mmである。即ち、溶接時には
溶接用チツプ４先端は約430℃となるため先端を
溶接用チツプ４先端に近付けすぎると熔融する可
能性を有するためである。又、この様に気体吐出
口を設置することで、被溶接物９が曲面からなる
ときでも、第４図に示すようにパイプ１１ｃの先
端が、被溶接物９に干渉しないようになり、又、
溶接用チツプ４先端を研摩するドレス作業の邪魔
をすることはない。更に、気体吐出口及びパイプ
１１ｃは、溶接用チツプ４が被溶接物９と当接す
る箇所の接線よりもシヤンク５側に設置するた
め、溶接用チツプ４の角度に沿つて飛ぶ火花を受
けることはなく火花と共に異物の固着することは
ない。パイプ１１ｃもシヤンク５に平行に取り付
けているため、溶接時に作業を邪魔することはな
い。 Reference numeral 1 is a spot gun, and the tips of the arms 2, 2 with the fulcrum 3 as the axis can be moved back and forth toward each other. 4, 4 are welding tips, and the tips of the arms 2, 2 of the spot gun 1 are equipped with shank 5, 5. Attach each via. Water pipes 6 for cooling the welding chips 4 pass through the shank 5, and water is fed in the direction of the arrow during cooling. 7 is an air cylinder. Air cylinder 7 divided by piston 10
Both chambers inside each have a pressurizing valve 8 and a pipe 11a,
11b. The pipe 11a is connected to the pipe 11c by a quick exhaust 12 consisting of a valve mechanism.
branch out. The pipe 11c is further branched and its tip is opened and attached near each welding tip 4,4. 13 is an air source that supplies air to the pressurizing valve 8, and supplies air at 6 kg/cm 3 . Instead of air, a gas that inhibits the adhesion of zinc or the like may be mixed and discharged. The tip of the pipe 11c is installed toward the tip of the welding tip 4 as shown in FIG. The diameter of the gas discharge port, which is installed toward the surface to be welded with which the welding tip 4 comes into contact, is about 3 mm. Further, the distance l between the gas discharge port and the welding chip 4 is 30 mm. That is, during welding, the temperature at the tip of the welding tip 4 reaches approximately 430° C., so if the tip is brought too close to the tip of the welding tip 4, there is a possibility that the tip will melt. Moreover, by installing the gas discharge port in this way, even when the workpiece 9 has a curved surface, the tip of the pipe 11c can be prevented from interfering with the workpiece 9 as shown in FIG. ,
It does not interfere with the dressing work of polishing the tip of the welding tip 4. Furthermore, since the gas discharge port and the pipe 11c are installed closer to the shank 5 than the tangent line where the welding tip 4 contacts the workpiece 9, they will not receive sparks flying along the angle of the welding tip 4. There is no chance of foreign objects sticking together with sparks. Since the pipe 11c is also attached parallel to the shank 5, it does not interfere with the welding work.
そこで、被溶接物９にスポツト溶接をする場
合、加圧バルブ８から、実線矢印のようにパイプ
１１ｂに空気を供給すると、ピストン１０は押し
あげられ、溶接用チツプ４，４を相互に近接す
る。すると、同時にピストン１０を介して反対側
の室内に充満する空気は、押圧された実線矢印方
向に進行し、クイツクエギゾースト１２、パイプ
１１ｃ，１１ｃを介して溶接用チツプ４，４先端
に向けて約５Kg／cm3で吐出する。空気は被溶接物
９の溶接面上付近のみに当たり、溶接箇所付近の
みのごみ等、溶接障害物を排除する。被溶接物が
曲面からなるときでも溶接予定箇所に面直に空気
を吐出する。又、同時に、溶接用チツプ４を空気
により冷却する。 Therefore, when spot welding is performed on the workpiece 9, when air is supplied from the pressure valve 8 to the pipe 11b as shown by the solid line arrow, the piston 10 is pushed up and the welding tips 4, 4 are brought close to each other. . At the same time, the air filling the room on the opposite side via the piston 10 moves in the direction of the pressed solid line arrow, toward the tips of the welding tips 4, 4 via the quick exhaust 12 and the pipes 11c, 11c. Discharges approximately 5Kg/ cm3 . The air hits only the vicinity of the welding surface of the object 9 to be welded, and removes welding obstacles such as dust only in the vicinity of the welding point. To discharge air perpendicularly to a part to be welded even when the object to be welded has a curved surface. At the same time, the welding chip 4 is cooled by air.
スポツト溶接終了後は、破線矢印方向に空気を
送ると、ピストン１０は図中下方に移動し、シリ
ンダ内の反対室の空気は加圧バルブ８から排出さ
れる。従つて、この実施例では、溶接用チツプ
４，４に向けて吐出する空気は従来単に排出され
ていた空気を利用しているため新たな吐出用空気
源を必要としないと共に溶接直前のタイミングを
選んで、空気を吐出することが可能となる。 After the spot welding is completed, when air is sent in the direction of the broken line arrow, the piston 10 moves downward in the figure, and the air in the opposite chamber in the cylinder is discharged from the pressurizing valve 8. Therefore, in this embodiment, since the air discharged toward the welding chips 4 uses the air that was conventionally simply discharged, there is no need for a new discharge air source, and the timing immediately before welding can be adjusted. It is possible to selectively discharge air.
しかも最も多い2.5ｇ以下、特に１ｇ前後のご
みを溶接予定範囲外に最小の移動をすることが可
能となる。 Moreover, it is possible to minimize the movement of the most common dust of 2.5g or less, especially around 1g, outside the planned welding area.
（実験例）
エア圧５Kg／cm3のエア圧で、溶接を妨害するご
みを飛ばす距離を第６図に示す。(Experiment example) Figure 6 shows the distance that dust that interferes with welding is thrown by an air pressure of 5 kg/cm 3 .
（発明の効果）
従つて、この発明では、溶接とエアの吐出を同
期させ、スポツト溶接における溶接予定箇所のご
み等を効率良く除去することが可能であり、かつ
溶接作業の邪魔をすることはない。(Effects of the Invention) Therefore, according to the present invention, it is possible to synchronize welding and air discharge, and to efficiently remove dust from the welding area during spot welding, without interfering with the welding work. do not have.
第１図はこの発明の実施例の側面概略図、第２
図、第３図は第１図の一部拡大図、第４図は他の
実施例の一部拡大図、第５図は従来例の側面概略
図である。第６図は実験例を表す。
１……スポツトガン、２，２……アーム、３…
…支点、４，４……溶接用チツプ、５，５……シ
ヤンク、６……水パイプ、７……エアシリンダ
ー、８……加圧バルブ、９……被溶接物、１０…
…ピストン、１１ａ，１１ｂ，１１ｃ……パイ
プ、１２……クイツクエギゾースト、１３……空
気源。
FIG. 1 is a schematic side view of an embodiment of the invention;
3 is a partially enlarged view of FIG. 1, FIG. 4 is a partially enlarged view of another embodiment, and FIG. 5 is a schematic side view of the conventional example. FIG. 6 represents an experimental example. 1... Spot gun, 2, 2... Arm, 3...
...Fully point, 4, 4...Welding tip, 5, 5...Shank, 6...Water pipe, 7...Air cylinder, 8...Pressure valve, 9...Work to be welded, 10...
...Piston, 11a, 11b, 11c...Pipe, 12...Quick exhaust, 13...Air source.
Claims (1)
２室に区分されるエアシリンダと、エアシリンダ
の２室を選択してエアを供給させる空気源と、ピ
ストンに連結され先端を開閉自在となるように支
点により支持させるとともに、エアシリンダの一
方の室にエアが供給されピストが駆動されること
で先端が被溶接物に近接駆動され、エアシリンダ
の他方の室にエアが供給されピストンが駆動され
ることで先端を後退駆動される２本のアームと、
アーム先端に取付けられるシヤンクに固定される
溶接用チツプと、基部はエアシリンダの他方の室
に接続され、先端には溶接用チツプ方向に開口さ
せて設置される気体吐出口を有する通気路とから
なることを特徴とするスポツト溶接機。1. An air cylinder in which a piston slides and is divided into two chambers by the piston, an air source that selects and supplies air to the two chambers of the air cylinder, and an air cylinder that is connected to the piston and whose tip can be opened and closed freely. It is supported by a fulcrum, and air is supplied to one chamber of the air cylinder to drive the piston, driving the tip close to the workpiece, and air is supplied to the other chamber of the air cylinder to drive the piston. Two arms whose tips are driven backwards,
A welding tip fixed to a shank attached to the tip of the arm, and a ventilation passage whose base is connected to the other chamber of the air cylinder and whose tip has a gas discharge port opened toward the welding tip. A spot welding machine that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162200A JPS6221472A (en) | 1985-07-23 | 1985-07-23 | Spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60162200A JPS6221472A (en) | 1985-07-23 | 1985-07-23 | Spot welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6221472A JPS6221472A (en) | 1987-01-29 |
| JPH0367473B2 true JPH0367473B2 (en) | 1991-10-23 |
Family
ID=15749883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60162200A Granted JPS6221472A (en) | 1985-07-23 | 1985-07-23 | Spot welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6221472A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040021868A (en) * | 2002-09-05 | 2004-03-11 | 현대자동차주식회사 | Auto dummy gun |
| JP2006159275A (en) * | 2004-12-10 | 2006-06-22 | Mazda Motor Corp | Method and apparatus for friction welding |
| IT1396398B1 (en) * | 2009-10-26 | 2012-11-19 | Robotools S R L | GRIPPER FOR ELECTRIC WELDING |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52158724U (en) * | 1976-05-26 | 1977-12-02 | ||
| JPS54143845U (en) * | 1978-03-31 | 1979-10-05 |
-
1985
- 1985-07-23 JP JP60162200A patent/JPS6221472A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6221472A (en) | 1987-01-29 |
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