JPH0415423Y2 - - Google Patents
Info
- Publication number
- JPH0415423Y2 JPH0415423Y2 JP1988087392U JP8739288U JPH0415423Y2 JP H0415423 Y2 JPH0415423 Y2 JP H0415423Y2 JP 1988087392 U JP1988087392 U JP 1988087392U JP 8739288 U JP8739288 U JP 8739288U JP H0415423 Y2 JPH0415423 Y2 JP H0415423Y2
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply brush
- main body
- inclined surface
- body case
- 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 16
- 238000003825 pressing Methods 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 241000755266 Kathetostoma giganteum Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Arc Welding In General (AREA)
- Resistance Welding (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、回転自在に支持した給電シヤフトに
溶接用の電流を効率よく伝達することのできるロ
ールスポツト溶接機の電極ヘツドに関するもので
ある。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an electrode head for a roll spot welding machine that can efficiently transmit welding current to a rotatably supported power supply shaft.
（従来の技術）
従来、搬送ラインを送られてくる被溶接物にス
ポツト溶接をする手段には、溶接するための電極
ヘツドの先端が回転するロールスポツト溶接があ
り、一対の電極ヘツドで被溶接物を挟持する断続
的に通電、加圧を行なつて溶接する。このとき、
電極ヘツドを支持しているロボツトアーム等を動
かしたり、被溶接物を移動させたりしたときに、
その摩擦で電極ヘツド先端が回転し常時適合した
面で溶接できるため仕上がりが滑らかで溶接速度
も早いため多く利用されている。(Prior Art) Conventionally, roll spot welding is a method for spot welding objects to be welded that are sent through a conveyor line, and involves rolling spot welding in which the tip of an electrode head for welding rotates. Welding is performed by applying electricity and pressure intermittently while holding objects. At this time,
When moving the robot arm supporting the electrode head or moving the workpiece,
The friction causes the tip of the electrode head to rotate, allowing welding to always occur on the same surface, resulting in a smooth finish and fast welding speed, which is why it is widely used.
電極ヘツドはそのケース部に、円板状の電極ロ
ーラを有する給電シヤフトを回転自在に設けてい
る。そして、電極ローラに電流を流すため、電極
ヘツドのケース部の給電シヤフトに摺接する給電
ブラシを設けている。 The electrode head has a rotatably provided power supply shaft having a disk-shaped electrode roller in its case portion. In order to apply current to the electrode roller, a power supply brush is provided which slides into contact with the power supply shaft of the case portion of the electrode head.
第４図に上記示した電極ヘツドの一例を示す。 FIG. 4 shows an example of the electrode head shown above.
図において、電極ヘツド１は先端部に電極ロー
ラ２を設けた給電シヤフト３が、ケーシング４、
ベアリングケース５、シールケース６および冷却
水ケース７からなるケース部に挿通され回転自在
に設けられている。給電シヤフト３に摺接する給
電ブラシ８は第５図および第６図に示すように一
対の半円弧状部材からなり、内側の給電シヤフト
３との円弧状の接触面に銀板８ａを貼着したもの
であり、ケーシング４にボルト９で固定され、押
しピン１０によつて給電シヤフト３を押圧してい
る。押しピン１０はケーシング４に螺着された袋
ナツト１３を締め付けることによつて給電ブラシ
８を押圧する。 In the figure, an electrode head 1 has a power supply shaft 3 having an electrode roller 2 at its tip, a casing 4,
It is inserted through a case portion consisting of a bearing case 5, a seal case 6, and a cooling water case 7, and is rotatably provided. The power supply brush 8 that comes into sliding contact with the power supply shaft 3 consists of a pair of semicircular arc-shaped members, as shown in FIGS. 5 and 6, and a silver plate 8a is attached to the arc-shaped contact surface with the power supply shaft 3 inside. It is fixed to the casing 4 with bolts 9, and presses the power supply shaft 3 with a push pin 10. The push pin 10 presses the power supply brush 8 by tightening a cap nut 13 screwed onto the casing 4.
また、給電シヤフト３はベアリング１１ａ，１
１ｂ，１１ｃを介してケース部と回転自在に設け
られ、ベアリング１１ａ，１１ｂ，１１ｃはそれ
ぞれケース部との間に絶縁カラー１２ａ，１２
ｂ，１２ｃが介在している。これによつて通電時
は給電ブラシ８のみによつて給電シヤフト３に電
流が流れ溶接を行なうことができる。 In addition, the power supply shaft 3 has bearings 11a, 1
The bearings 11a, 11b, 11c are provided rotatably with the case via the bearings 1b, 11c, and the insulating collars 12a, 12 are provided between the bearings 11a, 11b, 11c and the case, respectively.
b, 12c are interposed. As a result, when electricity is applied, current flows through the power supply shaft 3 only by the power supply brush 8 and welding can be performed.
（考案が解決しようとする課題）
電極ヘツド１の組み付けでは、給電シヤフト３
をケース部に挿入するのに邪魔にならない程度に
給電ブラシ８を軸に向けてケーシング４に横付け
して取付け、その後、締め付け手段により複数の
押しピン１０を軸方向の進入させて給電シヤフト
３に銀板８ａを介して押圧される。(Problem to be solved by the invention) When assembling the electrode head 1, the power supply shaft 3
The power supply brush 8 is axially oriented and attached horizontally to the casing 4 to the extent that it does not interfere with the insertion of the power supply shaft 3 into the case part, and then a plurality of push pins 10 are advanced in the axial direction using a tightening means to insert the power supply shaft 3 into the power supply shaft 3. It is pressed through the silver plate 8a.
以上のようにして組み付ける従来の装置では、
給電ブラシ８を互いに直角なケーシング４の接合
面と給電シヤフト３の摺動面に密に接触させねば
ならないので、締め付け圧力の調整が煩雑で、組
み立てに多くの時間を要し、また、複数の押しピ
ン１０を採用しているので組み付け構造が複数で
製作費が高くなる上、メンテナンスにも時間を要
するものであつた。 With conventional equipment that is assembled in the manner described above,
Since the power supply brush 8 must be brought into close contact with the joint surface of the casing 4 and the sliding surface of the power supply shaft 3, which are perpendicular to each other, adjusting the tightening pressure is complicated, it takes a lot of time to assemble, and Since the push pin 10 is used, there are multiple assembly structures, which increases manufacturing costs and requires time for maintenance.
本考案は以上のことから、極めて容易に給電ブ
ラシをケーシングの接触面と給電シヤフトの給電
部に密接させることのできるロールスポツト溶接
機の電極ヘツドを提供することを目的とする。 In view of the above, an object of the present invention is to provide an electrode head for a roll spot welding machine that allows the power supply brush to be brought into close contact with the contact surface of the casing and the power supply portion of the power supply shaft with great ease.
（課題を解決するための手段）
本考案は、上記目的を達成するために、先端部
に電極ローラを装着した給電シヤフトを本体ケー
スに回転自在に支持し、該本体ケース内に一対の
略半円弧状の当接面を有する給電ブラシを前記給
電シヤフトの周面に摺動自在に配設し、該給電ブ
ラシに溶接電流を供給するようにしたロールスポ
ツト溶接機の電極ヘツドにおいて、
前記給電ブラシの前部に、前記本体ケースに形
成した軸心に垂直な当接面と当接する当接面を形
成し、かつ、後部に平面状の傾斜面を形成し、
該給電ブラシの傾斜面と対応する位置に該傾斜
面に対して垂直なガイド孔を有する押えピンホル
ダを前記本体ケースに配設し、該押えピンホルダ
のガイド孔内に前記給電ブラシの傾斜面に当接可
能に押えピンを配設し、該押えピンを前記給電ブ
ラシの傾斜面に押圧する押圧手段を前記ガイドホ
ルダに調整自在に設けたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention rotatably supports a power supply shaft having an electrode roller attached to its tip in a main body case, and a pair of substantially half halves are installed in the main body case. In an electrode head of a roll spot welding machine, a power supply brush having an arc-shaped contact surface is slidably disposed on the circumferential surface of the power supply shaft, and a welding current is supplied to the power supply brush. A contact surface that contacts a contact surface perpendicular to the axis formed on the main body case is formed on the front part of the power supply brush, and a flat inclined surface is formed on the rear part of the main body case, and the contact surface corresponds to the inclined surface of the power supply brush. A presser pin holder having a guide hole perpendicular to the inclined surface is disposed in the main body case at a position where the presser pin holder is arranged in the guide hole of the presser pin holder, and a presser pin is disposed in the guide hole of the presser pin holder so as to be able to come into contact with the inclined surface of the power supply brush. The guide holder is further characterized in that a pressing means for pressing the presser pin against the inclined surface of the power supply brush is adjustably provided on the guide holder.
（作用）
上記のように構成した電極ヘツドは、給電ブラ
シの当接面が本体ケースの当接面で規制され、給
電ブラシの傾斜面には押圧手段によつて作動する
押えピンが当接されている。(Function) In the electrode head configured as described above, the contact surface of the power supply brush is regulated by the contact surface of the main body case, and the presser pin operated by the pressing means is in contact with the inclined surface of the power supply brush. ing.
押圧手段によつて押えピンを傾斜面に圧接させ
ると、給電ブラシは給電シヤフトの周面に、給電
ブラシの当接面と本体ケースの当接面とによつて
軸心に垂直な力を確実に掛けることができ接合状
態を良くする。 When the presser pin is pressed against the inclined surface by the pressing means, the power supply brush securely applies a force perpendicular to the axis to the circumferential surface of the power supply shaft by the contact surface of the power supply brush and the contact surface of the main body case. It can be hung to improve the bonding condition.
また、給電ブラシは押えピンを介して押圧手段
と連係し押えピンホルダで支持しているので、微
細な誤差は部材間で吸収され組み付け調整は簡単
になる。 Further, since the power supply brush is connected to the pressing means via the presser pin and supported by the presser pin holder, minute errors are absorbed between the members, and assembly and adjustment are simplified.
（実施例）
本考案の実施例を第１図ないし第３図に基いて
説明する。(Example) An example of the present invention will be described based on FIGS. 1 to 3.
電極ヘツドは概略、ケーシング、ベアリングケ
ースおよび冷却用ケースからなる角状の本体ケー
ス１５に給電シヤフト１６の円盤状の電極ローラ
１７が装着されているものである。 The electrode head generally has a square main body case 15 consisting of a casing, a bearing case, and a cooling case, and a disc-shaped electrode roller 17 of a power supply shaft 16 is attached thereto.
給電シヤフト１６は第１図に示すように、給電
シヤフト１６の軸方向にベアリング１８ａ，１８
ｂ，１８ｃを配し、絶縁カラー１９ａ，１９ｂ，
１９ｃを介して本体ケース１５に回転自在に支持
されており、また、給電シヤフト１６の先部に嵌
合されたサークリツプ２０でベアリング１８ａを
位置決め固定し、後部に形成したねじ溝１６ａに
取付けナツト２１を螺合させてベアリング１８ｃ
とともに本体ケース１５を軸方向に位置決め固定
されている。また、給電シヤフト１６は内部に電
極ローラ１７の接合部１７ａを経由して冷却水を
通す孔２２，２２が穿設され、本体ケース１５後
部に設けられた供給口２３、排出口に連通されて
いる。２５はオイルシールであり、２６は取付け
支持用の溝である。 As shown in FIG.
b, 18c, insulating collars 19a, 19b,
The bearing 18a is rotatably supported by the main body case 15 via the power supply shaft 19c, and the bearing 18a is positioned and fixed by a circlip 20 fitted to the tip of the power supply shaft 16, and a mounting nut 21 is inserted into the screw groove 16a formed at the rear part. Screw together the bearing 18c.
Together with this, the main body case 15 is positioned and fixed in the axial direction. Further, the power supply shaft 16 has holes 22, 22 bored therein through which cooling water passes through the joint 17a of the electrode roller 17, and communicates with a supply port 23 and a discharge port provided at the rear of the main body case 15. There is. 25 is an oil seal, and 26 is a groove for mounting support.
給電シヤフト１６の中央部、すなわちベアリン
グ１８ａとベアリング１８ｂとの間には、給電部
として一対の給電ブラシ２７が設置されている。
各給電ブラシ２７は略半円形状板体で、給電シヤ
フト１６との摺接面２７ａを略半円状の凹部に形
成し、この面に銀シート２８が被覆してある。ま
た、本体ケース１５の内部の輪状の当接面１５ａ
と接する給電ブラシ２７の前面は給電シヤフト１
６の軸心と直交する平坦な面である当接面２７ｂ
となつており、この面に銀メツキが施されてい
る。給電ブラシ２７の後面にはその外側部分を平
面状に切り欠いて後部（一部後面）に傾斜面２７
ｃを形成させている。 A pair of power supply brushes 27 are installed as a power supply section in the center of the power supply shaft 16, that is, between the bearings 18a and 18b.
Each power supply brush 27 is a substantially semicircular plate, and a sliding surface 27a with the power supply shaft 16 is formed into a substantially semicircular recess, and this surface is covered with a silver sheet 28. Further, an annular contact surface 15a inside the main body case 15
The front side of the power supply brush 27 that is in contact with the power supply shaft 1
The contact surface 27b is a flat surface perpendicular to the axis of 6.
This side is plated with silver. On the rear surface of the power supply brush 27, the outer part thereof is cut out into a planar shape, and an inclined surface 27 is formed on the rear (partial rear surface).
c.
本体ケース１５の対向した側面には嵌合孔２９
が形成され、絶縁を施した押えピンホルダ３０が
嵌着されている。押えピンホルダ３０上面には給
電ブラシ２７に形成した傾斜面２７ｃに対向した
傾斜面３０ｂが形成され、傾斜面２７ｃに対して
垂直方向に向くセツトネジ３１が並んで螺着され
ており、セツトネジ３１の下方には孔３０ａが傾
斜面２７ｃに向けて形成されている。そして、孔
３０ａに摺接して押えピン３２がその先端を傾斜
面２７ｃに当接させている。また、両端にカラー
３３，３３を有する皿ばね３４がセツトネジ３１
と押えピン３２との間に介在している。セツトネ
ジ３１は上面に溝、または六角孔が形成されてお
り、マイナスドライバー、六角レンチで回転させ
る。３５はセツトネジ３１を固定するためのロツ
クナツトである。 A fitting hole 29 is provided on the opposite side of the main body case 15.
is formed, and an insulated presser pin holder 30 is fitted therein. An inclined surface 30b opposite to the inclined surface 27c formed on the power supply brush 27 is formed on the upper surface of the presser pin holder 30, and set screws 31 facing perpendicular to the inclined surface 27c are lined up and screwed into the lower part of the set screw 31. A hole 30a is formed toward the inclined surface 27c. The presser pin 32 slides into the hole 30a, and its tip abuts against the inclined surface 27c. Further, a disc spring 34 having collars 33, 33 at both ends is attached to the set screw 31.
and the presser pin 32. The set screw 31 has a groove or a hexagonal hole formed on its upper surface, and is rotated with a flathead screwdriver or hexagonal wrench. 35 is a lock nut for fixing the set screw 31.
次に作用を説明する。 Next, the effect will be explained.
電極ヘツドに供給される電流は図示を略した接
続部より本体ケース１５に供給され、給電ブラシ
２７を通して給電シヤフト１６へ流れる。この給
電ブラシ２７を給電シヤフト１６に当接させるに
は、先ず、嵌合孔２９から給電部に給電ブラシ２
７を配置し、押えピン３２をセツトした押えピン
ホルダ３０を嵌合孔２９に嵌着させる。これによ
つて給電ブラシ２７の概略の位置が得られ、２つ
のセツトネジ３１を交互に締めて給電ブラシ２７
の傾斜面２７ｃに押えピン３２を押圧させる。そ
して、給電ブラシ２７の当接面２７ｂが本体ケー
ス１５の当接面１５ａに規制されて給電ブラシ２
７の摺接面２７ａが給電シヤフト１６が圧接され
る。この給電ブラシ２７と給電シヤフト１６との
接触状態を好適にしたセツトネジ３１の位置をロ
ツクナツト３５で固定する。給電ブラシ２７の設
定が完了すると、一対の電極ローラ１７部で被溶
接物を挟持して断続的に通電しながら溶接してい
く。この間、冷却水は供給口２３から流入し排出
口２４から流出され電極ヘツドの必要以上の熱の
発生を抑えている。 The current supplied to the electrode head is supplied to the main body case 15 from a connection portion (not shown), and flows to the power supply shaft 16 through the power supply brush 27. In order to bring the power supply brush 27 into contact with the power supply shaft 16, first, the power supply brush 2 is inserted into the power supply part from the fitting hole 29.
7, and the presser pin holder 30 with the presser pin 32 set therein is fitted into the fitting hole 29. With this, the approximate position of the power supply brush 27 is obtained, and the two set screws 31 are tightened alternately to remove the power supply brush 27.
The presser pin 32 is pressed against the inclined surface 27c. Then, the contact surface 27b of the power supply brush 27 is regulated by the contact surface 15a of the main body case 15, and the power supply brush 27 is regulated by the contact surface 15a of the main body case 15.
The sliding contact surface 27a of No. 7 is pressed against the power supply shaft 16. A lock nut 35 is used to fix the set screw 31 in a position that makes the contact between the power supply brush 27 and the power supply shaft 16 suitable. When the setting of the power supply brush 27 is completed, the object to be welded is held between the pair of electrode rollers 17 and welded while being intermittently energized. During this time, cooling water flows in from the supply port 23 and flows out from the discharge port 24, thereby suppressing the generation of unnecessary heat in the electrode head.
（考案の効果）
本考案は、以上のように構成したものであるの
で、給電ブラシは本体ケースとの当接面と給電シ
ヤフトとの摺接面とが一つの操作で同時に密に接
触させることができるので調整が簡単になつたこ
と、および押えピンを調整可能とした押えピンホ
ルダを本体ケースに装着するだけで給電ブラシを
適正に押えることが可能になり、給電ブラシの取
付け構造が簡略化されたことによる電極ヘツド本
体の製作費が低減できる等の効果がある。(Effect of the invention) Since the present invention is constructed as described above, the contact surface of the power supply brush with the main body case and the sliding surface with the power supply shaft can be brought into close contact at the same time in one operation. This makes adjustment easier, and the power supply brush can be properly held down simply by attaching the presser pin holder, which has an adjustable presser pin, to the main body case, simplifying the mounting structure of the power supply brush. This has the effect of reducing the manufacturing cost of the electrode head body.
第１図は本考案の実施例における電極ヘツドの
断面を示し、第２図の−矢視断面図であり、
押えピンホルダの部分は第２図のａ−ａ矢視
断面図である。第２図は実施例における電極ヘツ
ドの側面図、第３図は第１図の−矢視断面
図、第４図は従来の電極の側面図、第５図は第６
図の−矢視断面図、第６図は第４図の−
矢視断面図である。
１５……本体ケース、１６……給電シヤフト、
１７……電極ローラ、２７……給電ブラシ、２７
ａ……摺接面、２７ｂ……当接面、２７ｃ……傾
斜面、３１……押圧手段（セツトネジ）。
FIG. 1 shows a cross section of an electrode head in an embodiment of the present invention, and is a sectional view taken along the - arrow in FIG.
The presser pin holder portion is a sectional view taken along the line aa in FIG. 2. FIG. 2 is a side view of the electrode head in the embodiment, FIG. 3 is a sectional view taken along the - arrow in FIG. 1, FIG. 4 is a side view of a conventional electrode, and FIG.
Figure 6 is a cross-sectional view taken from the arrow in Figure 4.
It is an arrow sectional view. 15... Main body case, 16... Power supply shaft,
17... Electrode roller, 27... Power supply brush, 27
a... Sliding surface, 27b... Contact surface, 27c... Inclined surface, 31... Pressing means (set screw).
Claims (1)
本体ケースに回転自在に支持し、該本体ケース内
に一対の略半円弧状の当接面を有する給電ブラシ
を前記給電シヤフトの周面に摺動自在に配設し、
該給電ブラシに溶接電流を供給するようにしたロ
ールスポツト溶接機の電極ヘツドにおいて、 前記給電ブラシの前部に、前記本体ケースに形
成した軸心に垂直な当接面と当接する当接面を形
成し、かつ、後部に平面状の傾斜面を形成し、 該給電ブラシの傾斜面と対応する位置に該傾斜
面に対して垂直なガイド孔を有する押えピンホル
ダを前記本体ケースに配設し、該押えピンホルダ
のガイド孔内に前記給電ブラシの傾斜面に当接可
能に押えピンを配設し、該押えピンを前記給電ブ
ラシの傾斜面に押圧する押圧手段を前記ガイドホ
ルダに調整自在に設けたことを特徴とするロール
スポツト溶接機の電極ヘツド。[Claims for Utility Model Registration] A power supply shaft having an electrode roller attached to its tip is rotatably supported in a main body case, and a power supply brush having a pair of approximately semicircular arc-shaped contact surfaces is provided within the main body case for power supply. Slidably arranged on the circumferential surface of the shaft,
In the electrode head of a roll spot welding machine that supplies welding current to the power supply brush, the power supply brush has a contact surface on the front part thereof that contacts a contact surface perpendicular to the axis formed on the main body case. and a presser pin holder is disposed in the main body case, the holding pin holder having a planar inclined surface formed at the rear thereof and having a guide hole perpendicular to the inclined surface at a position corresponding to the inclined surface of the power supply brush, A presser pin is arranged in the guide hole of the presser pin holder so as to be able to come into contact with the inclined surface of the power supply brush, and a pressing means for pressing the presser pin against the inclined surface of the power supply brush is adjustably provided in the guide holder. An electrode head for a roll spot welding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087392U JPH0415423Y2 (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988087392U JPH0415423Y2 (en) | 1988-06-30 | 1988-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0211677U JPH0211677U (en) | 1990-01-24 |
| JPH0415423Y2 true JPH0415423Y2 (en) | 1992-04-07 |
Family
ID=31312006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988087392U Expired JPH0415423Y2 (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0415423Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7306900B2 (en) * | 2019-07-11 | 2023-07-11 | 株式会社Subaru | Welding gun and welding method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715024U (en) * | 1980-06-30 | 1982-01-26 |
-
1988
- 1988-06-30 JP JP1988087392U patent/JPH0415423Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715024U (en) * | 1980-06-30 | 1982-01-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0211677U (en) | 1990-01-24 |
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