JPS6117380A - Projection welding machine - Google Patents
Projection welding machineInfo
- Publication number
- JPS6117380A JPS6117380A JP13668084A JP13668084A JPS6117380A JP S6117380 A JPS6117380 A JP S6117380A JP 13668084 A JP13668084 A JP 13668084A JP 13668084 A JP13668084 A JP 13668084A JP S6117380 A JPS6117380 A JP S6117380A
- Authority
- JP
- Japan
- Prior art keywords
- nut
- welding
- electrode
- guide pin
- pin
- 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.)
- Granted
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
- B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
- B23K11/004—Welding of a small piece to a great or broad piece
- B23K11/0046—Welding of a small piece to a great or broad piece the extremity of a small piece being welded to a base, e.g. cooling studs or fins to tubes or plates
- B23K11/0053—Stud welding, i.e. resistive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Welding (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はグロジエクション溶接機に係シ、特にナツト下
孔のないパネルにナツトを溶接するに好適なグロジエク
ション溶接機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a grosgeection welding machine, and more particularly to a grosgeection welding machine suitable for welding a nut to a panel without a nut pilot hole.
従来、ノぞネル上にナツトを溶着するグロジェクション
溶接機として、実開昭５６−６５８０号公報に開示され
ているものが知られている。−これは上下動する上部電
極に磁気吸着手段を設け、下部電＆ＩＩＵに設置されて
いるパネル上の所望位置にナツト吸着状態で上部電極を
下降させることにより、ナツトの位置決めと溶着とを同
時に行わせるものである。2. Description of the Related Art Conventionally, as a glojection welding machine for welding a nut onto a nozzle, the one disclosed in Japanese Utility Model Application Publication No. 56-6580 is known. - This is done by installing magnetic adsorption means on the upper electrode that moves up and down, and lowering the upper electrode while adsorbing the nut to a desired position on the panel installed in the lower electric & IIU, thereby simultaneously positioning and welding the nut. It is something that can be done.
ところが、従来の溶接機ではナツトと上部電極との吸着
位置に偏位が生じ易く、下部電極上のツヤネルに対し正
確に位置合せすることができず、結局溶接位置決め精度
が悪い欠点があった。この点、ナツト、吸着側の電極に
ナツト位置決め用のガイド手段を設けることも考えられ
るが、溶接時にガイド手段等を通じて溶接電流が分流し
、溶接品質の低下をきたしてしまう問題を生じる。However, in conventional welding machines, deviations tend to occur in the adhesion position between the nut and the upper electrode, making it impossible to accurately align the nut to the glossy ring on the lower electrode, resulting in poor welding positioning accuracy. In this regard, it is conceivable to provide a guide means for positioning the nut on the nut and the suction side electrode, but this poses a problem in that the welding current is shunted through the guide means etc. during welding, resulting in a reduction in welding quality.
本発明の目的は、ナツト溶着位置決め精度が高く、かつ
溶接品質もすぐれたグロジエクション溶接を行うことの
できるプロジェクション溶接後を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a projection welding process that allows glossejection welding with high nut welding positioning accuracy and excellent welding quality.
上記目的を達成するために１本発明に係るプロジエクシ
ョン溶接機は、溶接電極内に装着され電栓先端に吸着さ
れた溶接対象ナツトのねじ孔内に出入可能とされるガイ
９ドビンを設け、該ガイドピンにはねじ孔開口縁に当接
されるチー７４面部を形成し、かつ前記ガイドピンを溶
接作業時に引込動作させる制御手段を設けて構成した。In order to achieve the above object, the projection welding machine according to the present invention is provided with a guide which is attached to the welding electrode and which can enter and exit the screw hole of the nut to be welded which is attracted to the tip of the electric plug. The guide pin is provided with a chi 74 surface portion that comes into contact with the opening edge of the screw hole, and is provided with a control means for retracting the guide pin during welding work.
斯かる構成によシ、パネルにす゛ット下孔を形成しない
場合であっても、ナツトとこれを吸着する電極との位置
決めがガイドピンにより正確に行われ、溶接時には浴接
電流が分流しないようにガイドピンを引込み動作させる
ことができるので、溶接精度と溶接品質を向上させるこ
とが可能となる。With this configuration, even if a pilot hole is not formed in the panel, the positioning of the nut and the electrode that attracts it is performed accurately by the guide pin, and the bath welding current does not flow during welding. Since the guide pin can be retracted in this manner, it is possible to improve welding accuracy and welding quality.
以下に本発明に係るグロジエクション溶接機ノ実施例を
図面を参照して詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a glossection welding machine according to the present invention will be described below in detail with reference to the drawings.
第１図はグロジエクション溶接機の上部電極構造の断面
図を示し、第２図はナツト供給装置を含む溶接機全体斜
視図、第６図は上部電極とナツトキャッチャ機構、下部
電極との関係を示す側面図である。図示の如く、この溶
接機は溶接機本体１に保持され、本体１の上部に設けた
加圧シリンダ２によシ鉛直下方に押出される供給へラド
ロッド５を備えている。この供給へラドロッド乙の下部
には当該下部を挿入させて内包するように装着される上
部電極４が取付けられている。上部電極４にはケーブル
ターミナル５が上方位置寄如に取付けられ、このターミ
ナル５に溶接ケーブル６を接続することによ如溶接電流
を供給させるようにしている。上部電極４の先端は截頭
円錐体とされ。Figure 1 shows a cross-sectional view of the upper electrode structure of a grosgeection welding machine, Figure 2 is a perspective view of the entire welding machine including the nut supply device, and Figure 6 shows the relationship between the upper electrode, nut catcher mechanism, and lower electrode. FIG. As shown in the figure, this welding machine is held in a welding machine main body 1 and is equipped with a rad rod 5 for supplying the welding machine by a pressurizing cylinder 2 provided at the upper part of the main body 1 and pushed vertically downward. To this supply, an upper electrode 4 is attached to the lower part of the rad rod B, which is inserted into and enclosed in the lower part. A cable terminal 5 is attached to the upper electrode 4 at an upper position, and a welding cable 6 is connected to the terminal 5 to supply welding current. The tip of the upper electrode 4 is a truncated cone.
先端面に溶接対象でおるナツト７を吸着させ、下部電極
８まで移送させるようにしている。ナツト７の吸着作用
は供給へラドロッド５に取付けた吸着コイル９への通電
励磁によシ行わせる。The nut 7 to be welded is attracted to the tip surface and transferred to the lower electrode 8. The suction action of the nut 7 is performed by energizing and excitation of the suction coil 9 attached to the supply rad rod 5.
また、供給へラドロッド５と上部電極４とは一体となっ
て供給ヘッド本体を構成しているが、このヘッド本体内
には上部電極４の先端面よシ出入可能なガイドピン１０
が配置されている。このガイドピン１０はピストン部１
１とこれよシ小径断面のピンロッド部１２とから構成さ
れ、供給ヘラドルラド６の先端部に形成したシリンダ室
１５に前記ピストン部１１を装着し、ピンレッド部１２
を上部電極４先端部に貫通させて端面から突出させ得る
ようにしている。このため、シリンダ室１５内でピスト
ン部１１を往復移動させるが、これはエアシリンダ機構
として構成され、ピストン部１１を挾んだ両端のシリン
ダ室を空圧案としており、上下空圧室に通じるように供
給へラドロッド６と上部電極４とに空気給排ポート１４
Ａ、１４Ｂを形成している。ここで、前記ガイドピン１
０のピンロッド部１２は、その突出作動時に、供給され
るナツト７のねじ孔７Ａに嵌入され、上部を極４とナツ
ト７の芯出しを行うものであ如１％に芯出しを正確に行
わせるために、途中にテーパ面１２Ａを形成し、当該テ
ーパ面１２Ａをねじ孔７Ａの開口縁にて当接させること
で正確な位置決め・を行わせるようにしている。Further, the supply rad rod 5 and the upper electrode 4 are integrated to constitute a supply head body, and a guide pin 10 that can be inserted into and taken out from the tip surface of the upper electrode 4 is provided in the head body.
is located. This guide pin 10 is the piston part 1
1 and a pin rod part 12 with a smaller diameter cross section.
is made to penetrate through the tip of the upper electrode 4 and protrude from the end surface. For this purpose, the piston part 11 is reciprocated within the cylinder chamber 15, but this is configured as an air cylinder mechanism, and the cylinder chambers at both ends that sandwich the piston part 11 are used as pneumatic channels, and communicate with the upper and lower pneumatic chambers. Air supply/discharge port 14 is connected to the rad rod 6 and the upper electrode 4 to supply air to the air supply/discharge port 14.
A and 14B are formed. Here, the guide pin 1
The pin rod part 12 of No. 0 is inserted into the screw hole 7A of the supplied nut 7 during the protruding operation, and the upper part is used to center the pole 4 and the nut 7, and the centering is performed accurately to within 1%. In order to do this, a tapered surface 12A is formed in the middle, and accurate positioning is achieved by bringing the tapered surface 12A into contact with the opening edge of the screw hole 7A.
次に、上記上部電極４の先端部には溶接対象のナツト７
を、第２図に示す如く、ナツト供給装置１５により連続
送給するが、供給ナツト７を上部電＆４の下部に案内す
るナツトキャッチャ機構１６を溶接機本体１に設けてい
る。このナツトキャッチャ機構１６は、上部電極４の両
側位置で支軸１７に取付けられたキャッチャアーム１Ｂ
を有し、アーム１８の先端にて傾斜又は直型のナツト送
給ガイド１９およびナツト受部２０を形成するようにし
ている。したがって各アーム１Ｂの先端にはガイド１９
および受部２０の半割体が一体に設けられ１両アーム１
８をスプリング２１の作用によるアーム閉脚動作時にナ
ツト７を上部電極４の先端面位置に走行案内するように
し、チーやム開脚動作によって上部電極４の下方移動の
障害とならないようにしている。開脚動作を行わせるた
めに、特に第５図に示すように、供給へラドロッド３に
はカム板２２が取付けられ、下降移動によシスブリング
２１に拡して両アーム１８を開脚方向に回転させるもの
としている。なお、ナツト送給ガイド１９にはナツト供
給装置１５のシュート２３が連続し、ナツト通路として
いる。Next, a nut 7 to be welded is attached to the tip of the upper electrode 4.
As shown in FIG. 2, the welding machine main body 1 is provided with a nut catcher mechanism 16 for guiding the supplied nuts 7 to the lower part of the upper electrode &4. This nut catcher mechanism 16 includes a catcher arm 1B attached to a support shaft 17 at both sides of the upper electrode 4.
An inclined or straight nut feeding guide 19 and a nut receiving portion 20 are formed at the tip of the arm 18. Therefore, a guide 19 is provided at the tip of each arm 1B.
The half body of the receiving part 20 is integrally provided, and one arm 1 is provided.
The nut 7 is run and guided to the tip surface position of the upper electrode 4 during arm closing operation by the action of a spring 21, so that the downward movement of the upper electrode 4 is not obstructed by the arm opening operation. In order to perform the leg opening motion, as shown in FIG. 5 in particular, a cam plate 22 is attached to the feeding rad rod 3, and as it moves downward, it spreads to the system ring 21 and rotates both arms 18 in the leg opening direction. It is assumed that Note that the nut feeding guide 19 is connected to the chute 23 of the nut feeding device 15, forming a nut passage.
一方、上部電極４に対面する下部電極８は溶接機本体１
の下部に固定配置されているが、これにはナツト７と溶
着されるパネル２４を配置するようにしている。On the other hand, the lower electrode 8 facing the upper electrode 4 is connected to the welding machine main body 1.
A panel 24 to be welded to the nut 7 is disposed in a fixed manner at the bottom of the nut 7.
次に、上記装置の駆動機構を第４図に示す。駆動機構は
ガイドピン１０を出入させ、また上部電極４の加圧（前
進）・開放（後退）をなすエア回路２５を有している。Next, the drive mechanism of the above device is shown in FIG. The drive mechanism has an air circuit 25 that moves the guide pin 10 in and out, and pressurizes (advances) and releases (retracts) the upper electrode 4.
このエア回路２５は電磁切換弁２６．２７を切換動作さ
せることによシ、ガイドピン１０の出入動作等を行わせ
ることができるのである。そして各駆動機器を作動させ
るタイムチャートは第５図の如く構成し、これを実施す
るシーケンス制御回路を第６図に示す。特に、この制御
手段では上部電極４からガイドピン１０を出入させる操
作を溶接電流の通電時に行うものとし、溶接時にガイド
ピン１０が引込み作動させるように制御され、溶接電流
通電終了後に突出させるようにしている。これはガイド
ピン１０の両端空圧室に通じる電磁切換弁２６に切換信
号を付与することによシ達成される。具体的には、パネ
ル２４が下部電極８上に搬入されたことを検知して起動
指令を与え、ナツト送給をなすとともに吸着コイル９の
通電、回路のａ接点ＣＲ５を作動させて上部電極４にナ
ツト７を吸着させる。ナツト吸着時にはガイドピン１０
が上部電極４よシ突出状態におるため、ビン１０がねじ
孔７Ａに差込まれ、テーパ面１２Ａの作用で上部亀、＆
４とナツト７との正確な位置決めがなされる。同時に上
部電極４を下降させる駆動回路のａ接点ＣＲ５も作動さ
れるので、電磁切換弁２７が加圧側に切換わシ、上部電
極４がナツト吸着状態で下部電極８にセットされている
パネル２４に向って下降される。下降端に達すると、該
位置に設定されているリミットスイッチＬＳ−２がオン
され、これによシ、吸着コイル９への通電を切シ、ガイ
ドピン１０の駆動用電磁切換弁２７を作動させる回路の
ｂ接点を起動し、ビン引込側へ弁２７を切換えるのであ
る。This air circuit 25 can move the guide pin 10 in and out by switching the electromagnetic switching valves 26 and 27. A time chart for operating each drive device is constructed as shown in FIG. 5, and a sequence control circuit for implementing this is shown in FIG. In particular, in this control means, the operation of moving the guide pin 10 in and out of the upper electrode 4 is performed when the welding current is applied, and the guide pin 10 is controlled to be retracted during welding, and made to protrude after the welding current has ended. ing. This is achieved by applying a switching signal to the electromagnetic switching valve 26 which communicates with the pneumatic chambers at both ends of the guide pin 10. Specifically, it detects that the panel 24 has been placed on the lower electrode 8, issues a start command, feeds the nut, energizes the adsorption coil 9, operates the a contact CR5 of the circuit, and connects the upper electrode 4. Let Nut 7 be absorbed. Guide pin 10 when picking up nuts
is in a state of protruding beyond the upper electrode 4, the bottle 10 is inserted into the screw hole 7A, and the upper turtle, &
4 and the nut 7 are accurately positioned. At the same time, the a contact CR5 of the drive circuit that lowers the upper electrode 4 is activated, so the electromagnetic switching valve 27 is switched to the pressurizing side, and the upper electrode 4 is attached to the panel 24 set on the lower electrode 8 while the nut is being attracted. He is descending toward the earth. When the lower end is reached, the limit switch LS-2 set at that position is turned on, thereby cutting off the power to the adsorption coil 9 and operating the electromagnetic switching valve 27 for driving the guide pin 10. The b contact of the circuit is activated and the valve 27 is switched to the bottle retracting side.
また同時にタイマＴＲ１を起動し、溶接電流の通電回路
中のタイマスイッチＴＲ１を作動させ、設定時間だけ通
電し溶接をなす。そしてこの溶接電流の通電終了と同時
にガイドピン１０をもとの状態すなわち電磁切換６−を
復帰させてビン突出状態として次の４＝侃ｉ Ｋ入るの
である。At the same time, the timer TR1 is started, the timer switch TR1 in the welding current energization circuit is activated, and the current is energized for a set time to perform welding. Then, at the same time as the application of the welding current is finished, the guide pin 10 is returned to its original state, that is, the electromagnetic switch 6- is returned to the next state in which the bottle protrudes.
上述のような構成に係るグロジエクション溶接機によれ
ば、上部電極４に励磁作用にてナツト７を吸着させるが
、吸着時にガイドピン１０をねじ孔７Ａに差込み、ビン
に設けたチー・母面１２Ａにて芯出しを行うことが可能
となっているので、上部電極４に正確にナツト７を位置
決めすることができる。このことは下部電極８にセット
されたパネル２４への溶接位置決めを正確に行うことが
できることを意味する。したがって−パネル２４に下孔
を設けたυする等ナツトとの位置合せのためのいくつか
の工程設備が不要となる。また、ガイドピン１０はナツ
ト７とノぐネル２４の溶接時には制御手段により上部電
極４内に引込まれているので、このガイドピン１０を通
じて溶接電流が分流することがない。したがってグロジ
エクションを通じてのみ通電させることを確保できるの
で、溶接品質を向上させることができる。According to the grosgeection welding machine having the above-mentioned configuration, the nut 7 is attracted to the upper electrode 4 by the excitation action, but when the nut 7 is attracted, the guide pin 10 is inserted into the screw hole 7A, and the guide pin 10 is inserted into the screw hole 7A, Since centering can be performed on the surface 12A, the nut 7 can be accurately positioned on the upper electrode 4. This means that the welding position to the panel 24 set on the lower electrode 8 can be accurately performed. Therefore, some process equipment for alignment with nuts, such as pre-drilled holes in the panel 24, is eliminated. Further, since the guide pin 10 is pulled into the upper electrode 4 by the control means when welding the nut 7 and the nozzle 24, the welding current is not shunted through the guide pin 10. Therefore, it is possible to ensure that electricity is applied only through glossejection, so that welding quality can be improved.
なお、上記実施例では上部電極４にガイドピン１０を取
付けた構成としたが、固定側の下部電極８側に配置した
構成でもよく、また、シーケンス回路による制御回路を
マイクロコンピュータ処理にて行わせるようにしてもよ
い。In the above embodiment, the guide pin 10 is attached to the upper electrode 4, but the guide pin 10 may be arranged on the lower electrode 8 side on the fixed side, and the control circuit using the sequence circuit can be processed by a microcomputer. You can do it like this.
以上の如く、本発明に係るプロジェクション溶接機によ
れば、溶接位置決め都度と溶接品質の向上を簡単な構成
によシ達成できる。As described above, according to the projection welding machine according to the present invention, it is possible to improve welding positioning and welding quality each time with a simple configuration.
第１図は実施例に係るグロジエクション溶接機の上部電
極部分の断面図、第２図はナツト供給装置を含む同溶接
機の全体斜視図、第６図は上下電極部側面図、第４図は
エア回路図、第５図Ｃタイムチャート図、第６図はシー
ケンス回路図である。
４・・・上部電極、 ７・・・ナツト。
８・・・下部電極、 １０・・・ガイトビ″ン。
１６・・・ナツトキャッチャ機構、
２４・・・パネル、 ２５工ア回路。
代理人 鵜 沼 辰 之
第１図
第２図Fig. 1 is a cross-sectional view of the upper electrode portion of the grosgeection welding machine according to the embodiment, Fig. 2 is an overall perspective view of the same welding machine including the nut supply device, Fig. 6 is a side view of the upper and lower electrode parts, and Fig. 4 The figure is an air circuit diagram, Figure 5 is a time chart diagram, and Figure 6 is a sequence circuit diagram. 4... Upper electrode, 7... Nut. 8... Lower electrode, 10... Guide bin. 16... Nut catcher mechanism, 24... Panel, 25 Engineering circuit. Agent: Tatsuyuki Unuma Figure 1 Figure 2
Claims (1)
対象ナツトのねじ孔内に出入可能とされるガイドピンを
設け、該ガイドピンにはねじ孔開口縁に当接されるテー
パ面部を形成し、かつ前記ガイドピンを溶接作業時に引
込動作させる制御手段を設けたことを特徴とするプロジ
エクシヨン溶接機。(1) A guide pin is installed in the welding electrode and can be moved in and out of the screw hole of the nut to be welded which is attracted to the electrode tip, and the guide pin has a tapered surface part that comes into contact with the opening edge of the screw hole. 1. A projection welding machine, characterized in that the projection welding machine is provided with a control means for retracting the guide pin during welding work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13668084A JPS6117380A (en) | 1984-07-02 | 1984-07-02 | Projection welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13668084A JPS6117380A (en) | 1984-07-02 | 1984-07-02 | Projection welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6117380A true JPS6117380A (en) | 1986-01-25 |
| JPH0259036B2 JPH0259036B2 (en) | 1990-12-11 |
Family
ID=15180959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13668084A Granted JPS6117380A (en) | 1984-07-02 | 1984-07-02 | Projection welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117380A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6451211A (en) * | 1987-08-18 | 1989-02-27 | Daishowa Seiki | Tool holder with tool lateral feeding mechanism built in |
| US4853511A (en) * | 1986-11-28 | 1989-08-01 | Evg Entwicklungs - U. Verwertungs-Gesellschaft M.B.H. | Apparatus for the feeding of transverse wires to the welding line of a grid welding machine |
| JP2009255151A (en) * | 2008-04-21 | 2009-11-05 | Shinko Kiki Kk | Method for welding weld nut and electrode apparatus for weld nut welding |
| US7823958B2 (en) | 2007-05-11 | 2010-11-02 | Toyota Jidosha Kabushiki Kaisha | Vehicle deck structure |
-
1984
- 1984-07-02 JP JP13668084A patent/JPS6117380A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4853511A (en) * | 1986-11-28 | 1989-08-01 | Evg Entwicklungs - U. Verwertungs-Gesellschaft M.B.H. | Apparatus for the feeding of transverse wires to the welding line of a grid welding machine |
| JPS6451211A (en) * | 1987-08-18 | 1989-02-27 | Daishowa Seiki | Tool holder with tool lateral feeding mechanism built in |
| US7823958B2 (en) | 2007-05-11 | 2010-11-02 | Toyota Jidosha Kabushiki Kaisha | Vehicle deck structure |
| JP2009255151A (en) * | 2008-04-21 | 2009-11-05 | Shinko Kiki Kk | Method for welding weld nut and electrode apparatus for weld nut welding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0259036B2 (en) | 1990-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |