JPH09248676A - Resistance welding machine - Google Patents
Resistance welding machineInfo
- Publication number
- JPH09248676A JPH09248676A JP8060576A JP6057696A JPH09248676A JP H09248676 A JPH09248676 A JP H09248676A JP 8060576 A JP8060576 A JP 8060576A JP 6057696 A JP6057696 A JP 6057696A JP H09248676 A JPH09248676 A JP H09248676A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- welding
- pressurizing
- welded
- 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.)
- Pending
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
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/317—Equalizing; Balancing devices for electrode holders
-
- 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
- B23K11/30—Features relating to electrodes
- B23K11/31—Electrode holders and actuating devices therefor
- B23K11/311—Electrode holders and actuating devices therefor the actuating device comprising an electric motor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
- Resistance Welding (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、抵抗溶接装置の全
自動化に関する技術であり、特に溶接品質を安定させる
ための機構ならびに制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for fully automating a resistance welding apparatus, and more particularly to a mechanism and a control system for stabilizing welding quality.
【0002】[0002]
【従来の技術】従来の技術は通常、被溶接物を加圧機構
により一定に加圧し任意の電流を流し溶接を行なうが、
溶接品質を決定する項目はさまざまであり、それを安定
維持するための機構、また使い勝手の面でも改良が行な
われている。例えば特開昭60−223669に記載の
ように被溶接物を加圧するシリンダ内に供給するエアー
を制御し加圧力を一定にする方式がある。同じく特開昭
61−253189に記載のように電極の駆動をトルク
モータにより行ない加圧力を一定にするとともに電極の
高さを自由に可変し作業性を向上させるといった方式も
ある。2. Description of the Related Art In the prior art, a welding mechanism normally pressurizes an object to be welded with a constant pressure to apply an arbitrary electric current to perform welding.
There are various items that determine the welding quality, and improvements have been made in terms of the mechanism for maintaining it stably and in terms of usability. For example, as disclosed in Japanese Patent Laid-Open No. 60-223669, there is a method of controlling the air supplied into a cylinder for pressurizing an object to be welded so that the pressure is kept constant. Similarly, as described in JP-A-61-253189, there is also a system in which the electrodes are driven by a torque motor so that the pressing force is constant and the height of the electrodes can be freely changed to improve workability.
【0003】[0003]
【発明が解決しようとする課題】以下に抵抗溶接に関す
る説明をする。The resistance welding will be described below.
【0004】抵抗溶接は、被溶接物に電極で一定の力で
加圧し電極間に電圧を加え被溶接物に電流を流しそれに
より発生するジュール熱により溶融し接合するものであ
る。In resistance welding, pressure is applied to the object to be welded with a constant force, a voltage is applied between the electrodes, a current is passed through the object to be welded, and the Joule heat generated thereby melts and joins.
【0005】ここで結合させるために必要な電流は電
極間に印加する電圧及び時間、被溶接物、使用する
電極により決定するが、その他電極と被溶接物間および
被溶接物間の接触抵抗も関係する。この接触抵抗は被
溶接物を加圧する大きさにより変化する。The current required for the coupling is determined by the voltage and time applied between the electrodes, the work piece to be welded, the electrode used, and the contact resistance between the other electrode and the work piece and the work piece to be welded. Involved. This contact resistance changes depending on the size of pressing the object to be welded.
【0006】すなわち溶接品質を安定させるためには上
記4つの項目を安定させる必要がある。しかし、上記従
来技術はそのうち使用する電極および接触抵抗つい
て検討が充分に成されておらず方式に不備が有り、また
管理も不十分であった。このため従来の方式では上記説
明の通り品質に問題が多く溶接の全自動化は困難であ
り、何らかの形で人が常に介入するため効率の悪い設備
となってしまう。That is, in order to stabilize the welding quality, it is necessary to stabilize the above four items. However, in the above-mentioned conventional technique, the electrodes and the contact resistance to be used have not been sufficiently studied, the method is deficient, and the management is insufficient. For this reason, in the conventional method, as described above, there are many problems in quality, and it is difficult to fully automate welding. In some form, humans always intervene, resulting in inefficient equipment.
【0007】本発明は、上記4つの項目を自動で制御・
管理し品質の安定した全自動化設備を実現させることを
目的とする。The present invention automatically controls the above four items.
The objective is to realize fully automated equipment with stable quality controlled.
【0008】[0008]
【課題を解決するための手段】上記目的を達成するため
自動溶接装置にNC加圧機構、加圧測定機構並びにそれ
ぞれを制御する制御装置を提供する。In order to achieve the above object, an automatic welding apparatus is provided with an NC pressurizing mechanism, a pressurizing measuring mechanism and a control device for controlling each.
【0009】NC加圧機構はバネ式定圧溶接ヘッドの駆
動用として取付けるため電極を任意の速度で任意の位置
決めが可能となる。Since the NC pressurizing mechanism is mounted for driving the spring type constant pressure welding head, the electrode can be positioned at any speed and at any position.
【0010】加圧測定機構は被溶接物と同じ高さにひず
みゲージを取付けたもので電極で加圧すると圧力がイン
ジケータにより表示と外部出力されるため、定期的に測
定することで加圧を一定にすることが可能となる。The pressure measuring mechanism has a strain gauge attached at the same height as the work to be welded. When pressure is applied by the electrode, the pressure is displayed and output externally by the indicator. It becomes possible to make it constant.
【0011】この他、これら機構を制御することによる
作用を図を用いて説明する。In addition, the operation of controlling these mechanisms will be described with reference to the drawings.
【0012】電極測定は、図2のように先ずヘッドを下
降させひずみゲージに接触した時の原点からの移動量L
0を記憶する。そして溶接を数回行った後再度ヘッドを
下降させ同じくL1を記憶する。この結果から電極長さ
l−電極の摩耗量(L0−L1)を算出する。これによ
り事前に実験で得た電極長さ別最適条件を切り替える。As shown in FIG. 2, the electrode is measured by first moving the head down and contacting the strain gauge with the amount of movement L from the origin.
Remember 0. Then, after welding is performed several times, the head is lowered again and L1 is similarly stored. From this result, the electrode length l-the amount of wear of the electrode (L0-L1) is calculated. As a result, the optimum conditions for each electrode length obtained in advance are switched.
【0013】また電極の移動は作業時間短縮の為、非溶
接物に接触する少し手前の仮原点(L0ーX)まで高速
で移動しその後は非溶接物の接触による振動を軽減させ
るため加速を滑らかに行うサイクロイド曲線等で下降し
非溶接物に接触してからバネが圧縮されヘッド内部のリ
ミットスイッチをONする位置(L0+h)で停止し、
溶接終了後仮原点位置まで高速で移動し一連の動作を完
了する。In order to shorten the working time, the electrodes move at a high speed to a temporary origin (L0-X) slightly before the contact with the non-welded object, and then accelerate to reduce the vibration due to the contact with the non-welded object. Stops at the position (L0 + h) where the spring is compressed and the limit switch inside the head is turned ON after it descends along a smooth cycloid curve and contacts the non-welded object,
After welding, it moves to the temporary origin position at high speed and completes a series of operations.
【0014】以上の方式制御方法によると、上下方向か
ら同時に加圧し溶接を行う場合でも上下の電極摩耗量の
違いに関係無く人の介入を必要とせず、常に安定した溶
接が効率良く行われる。詳しく説明すると図6の用に上
下から加圧しようとすると、非溶接物に接触するタイミ
ングのずれにより非溶接物は上下に振動する為それに応
じて圧力も変動し有効圧力範囲外で通電が開始されてし
まう可能性が有り、過剰変形やスパークといった溶接不
良となる。此の現象を回避するには、振動がおさまるま
で通電を遅らせる方法が有るが効率が悪いため、電極先
端から非溶接物迄の距離、移動時間を調整する必要があ
るが、本方式によると容易に実現できる。According to the system control method described above, even when pressure is applied simultaneously from above and below to perform welding, human intervention is not required regardless of the difference in the amount of wear of the upper and lower electrodes, and stable welding is always performed efficiently. More specifically, if pressure is applied from above and below as shown in FIG. 6, the non-welded product vibrates up and down due to the shift in the timing of contact with the non-welded product, so the pressure also fluctuates accordingly and the energization starts outside the effective pressure range. There is a possibility that they will be welded, resulting in welding defects such as excessive deformation and sparks. In order to avoid this phenomenon, there is a method of delaying energization until the vibration subsides, but since it is inefficient, it is necessary to adjust the distance from the electrode tip to the non-welded object and the movement time. Can be realized.
【0015】さらに非溶接物の寸法が異なった場合でも
NC機構により移動速度、停止位置等自由に制御可能で
ある為、対応可能である。Further, even when the size of the non-welded object is different, the moving speed, the stop position and the like can be freely controlled by the NC mechanism, so that it is possible to cope with the situation.
【0016】[0016]
【発明の実施の形態】本発明を使用した実施例を図を用
いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment using the present invention will be described with reference to the drawings.
【0017】図4は実施例の対象製品であるケーブル1
5とコネクタ14の斜視図であり図のようにコネクタは
端子が上下2列に一定ピッチで配列され、ケーブル芯線
はコネクタ端子に配列されるように成形されている図5
は本発明の実施例であるコネクタ溶接装置の外観であ
り、ケーブル15を固定したパレット16を装置内に搬
送するローダ17、コネクタ14を供給するコネクタ供
給部26、ケーブル15の組合わせ位置を決めるための
検出部18、コネクタ14とケーブル15を組合わせる
組合わせ機構19、ワークを加圧するNC加圧機構2
0、NC加圧機構を移動させる送り機構21、電流を供
給する溶接電源22、加圧を測定する加圧測定機構2
3、電極表面を磨く研磨機構24、操作パネル25等で
構成される。FIG. 4 shows a cable 1 which is a target product of the embodiment.
5 is a perspective view of the connector 14 and as shown in the figure, the connector is formed by arranging the terminals in two rows in a row at a constant pitch, and the cable core wire is formed so as to be arranged in the connector terminals.
3 is an external view of a connector welding apparatus according to an embodiment of the present invention, in which a combination position of a loader 17 for transporting a pallet 16 having a cable 15 fixed therein, a connector supply unit 26 for supplying a connector 14, and a cable 15 is determined. Detection unit 18, a combination mechanism 19 that combines the connector 14 and the cable 15, an NC pressurization mechanism 2 that pressurizes the work.
0, a feeding mechanism 21 for moving the NC pressurizing mechanism, a welding power source 22 for supplying an electric current, a pressurizing measuring mechanism 2 for measuring pressurization
3, a polishing mechanism 24 for polishing the electrode surface, an operation panel 25, and the like.
【0018】動作順序は、コネクタ供給部26から供給
され組合わせ機構に位置決めされたコネクタ14とロー
ダ17により搬送され検出部18で検出し位置決めされ
たケーブル15を組合わせ、送り機構21でNC加圧機
構20をコネクタ位置まで送り、ピッチ送りしながらN
C加圧機構20により上下から加圧を行い溶接電源22
から電流が供給され溶接が行われる。そしてNC加圧機
構20を研磨機構部24に送り加圧を加えながら送り機
構21が移動し電極の研磨を行う。The operation sequence is such that the connector 14 supplied from the connector supply unit 26 and positioned in the combination mechanism is combined with the cable 15 conveyed by the loader 17 and detected by the detection unit 18 and positioned, and the feeding mechanism 21 performs NC addition. While feeding the pressure mechanism 20 to the connector position and feeding the pitch, N
Welding power source 22 that applies pressure from above and below by C pressure mechanism 20
Is supplied with electric current to perform welding. Then, the NC pressurizing mechanism 20 is sent to the polishing mechanism section 24, and the feeding mechanism 21 moves while applying pressure to polish the electrode.
【0019】次に本発明の加圧機構を詳細に説明する。Next, the pressing mechanism of the present invention will be described in detail.
【0020】図1は本加圧機構の簡略藻式図であり、図
に示すように電極1と、それを保持する電極ホルダー2
と、それに圧力を付加する圧縮バネ3と、圧縮バネ3を
会し電極ホルダー2を移動させるアーム4と、電極ホル
ダー2とアーム4がしゅう動する軸受5と、アーム4を
駆動させるボールネジ6とボールナット7と、それをガ
イドするベアリング8と、駆動源であるパルスモータ9
と、加圧を測定するひずみゲージ10と表示するインジ
ケータ11などから構成され、動作はパルスモータ9が
任意の回転を行うとボールネジも回転しボールナット7
が移動する、そしてアーム4、バネ3、電極ホルダー
2、電極1が移動しコネクタに接触する。さらに回転す
ると電極はコネクタに接触しているため停止したままで
バネ3が圧縮され加圧が増加していく、そして電極ホル
ダ2に取り付けられたドグ12がアーム4に取り付けら
れたリミットスイッチ12に接触することで通電が開始
される。これと同じ動作で加圧力をひずみゲージ10と
インジケータ11により測定する。FIG. 1 is a simplified algae type diagram of the present pressurizing mechanism. As shown in the figure, an electrode 1 and an electrode holder 2 for holding it are shown.
A compression spring 3 for applying a pressure thereto, an arm 4 for moving the electrode holder 2 by contacting the compression spring 3, a bearing 5 for sliding the electrode holder 2 and the arm 4, and a ball screw 6 for driving the arm 4. Ball nut 7, bearing 8 for guiding it, and pulse motor 9 as a drive source
And a strain gauge 10 for measuring pressurization, an indicator 11 for displaying, and the like. The operation is such that when the pulse motor 9 rotates arbitrarily, the ball screw also rotates and the ball nut 7
Moves, and the arm 4, the spring 3, the electrode holder 2, and the electrode 1 move and come into contact with the connector. When the electrode is further rotated, the spring 3 is compressed and the pressure is increased while the electrode is in contact with the connector, and the dog 12 attached to the electrode holder 2 is moved to the limit switch 12 attached to the arm 4. Energization is started by making contact. With the same operation as this, the pressing force is measured by the strain gauge 10 and the indicator 11.
【0021】溶接条件は、コネクタが3種類、ケーブル
は3種類でそれぞれ2種類の芯線径が有るため、随時切
り替えが必要であり、また電極長さによっても最適条件
が異なる。本装置は事前にそれぞれの条件を実験により
求め、電極長さ別に各ケーブル・コネクタ組合せの溶接
条件をデータベース化し溶接電源に電極長さ測定後、デ
ータを転送し、溶接動作中に溶接電源内部で各ケーブル
・コネクタ組合せの溶接条件を切り替える方式とした。Regarding the welding conditions, three types of connectors and three types of cables each have two types of core wire diameters, so switching is required at any time, and the optimum conditions also differ depending on the electrode length. This device obtains each condition in advance by experiments, creates a database of welding conditions for each cable / connector combination for each electrode length, measures the electrode length to the welding power source, transfers the data, and then inside the welding power source during welding operation. The welding conditions for each cable / connector combination were switched.
【0022】電極の長さは、電極交換時に初期値を入力
し、その後は自動電極長さ測定方式により全自動で管理
し、限界電極長さまで摩耗するとアラームで作業者に知
らせると電極の交換を行う、また加圧力についても良好
範囲を設定しておき、その範囲から外れると同じくアラ
ームにより作業者に知らせる方式となっている。For the electrode length, an initial value is input at the time of electrode replacement, and after that, it is fully automatically controlled by an automatic electrode length measuring method, and when the wear reaches the limit electrode length, an alarm is notified to the operator to replace the electrode. In addition, a good range is set for the pressing force, and if it deviates from the range, the operator is informed by an alarm similarly.
【0023】[0023]
【発明の効果】本発明によれば、全自動でワークに対応
した溶接条件の切り替えおよび各条件の管理が行えるた
め、人手の介入が無く装置稼働率の向上と接続品質の安
定化の効果が得られる。According to the present invention, since the welding conditions corresponding to the workpiece can be switched and the respective conditions can be managed in a fully automatic manner, there is no human intervention and there is an effect of improving the operation rate of the device and stabilizing the connection quality. can get.
【図1】本発明の加圧機構藻式図。FIG. 1 is a pressurization mechanism algae diagram of the present invention.
【図2】本発明の電極測定方式図。FIG. 2 is a diagram of an electrode measuring method of the present invention.
【図3】本発明の電極動作制御方式図。FIG. 3 is an electrode operation control system diagram of the present invention.
【図4】本発明の実施例対象ワーク斜視図。FIG. 4 is a perspective view of a target work according to an embodiment of the present invention.
【図5】本発明の実施例装置外観図。FIG. 5 is an external view of an apparatus according to an embodiment of the present invention.
【図6】上下同時溶接のワーク振動状況。FIG. 6 is a work vibration state of upper and lower simultaneous welding.
1…電極、 2…電極ホルダ、 3…圧縮バネ、
4…アーム、5…軸受、 6…ボールネジ、 7
…ボールナット、8…ベアリング、9…パルスモータ、
10…ひずみゲージ、11…インジケータ、12…ド
グ、13…リミットスイッチ、 14…コネク
タ、15…ケーブル、16…パレット、 17…ロー
ダ、 18…検出部、 19…組合わせ機構、20…N
C加圧機構、21…送り機構、22…溶接電源、23…
加圧測定機構、24…研磨機構、25…操作パネル、2
6…コネクタ供給部。1 ... Electrode, 2 ... Electrode holder, 3 ... Compression spring,
4 ... Arm, 5 ... Bearing, 6 ... Ball screw, 7
… Ball nut, 8… Bearing, 9… Pulse motor,
10 ... Strain gauge, 11 ... Indicator, 12 ... Dog, 13 ... Limit switch, 14 ... Connector, 15 ... Cable, 16 ... Pallet, 17 ... Loader, 18 ... Detecting part, 19 ... Combination mechanism, 20 ... N
C pressurizing mechanism, 21 ... feeding mechanism, 22 ... welding power source, 23 ...
Pressure measuring mechanism, 24 ... Polishing mechanism, 25 ... Operation panel, 2
6 ... Connector supply section.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 // H01R 43/02 H01R 43/02 B ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location // H01R 43/02 H01R 43/02 B
Claims (3)
し電流を流すことにより溶接を行なう抵抗溶接装置に於
いて、加圧ヘッドの駆動にモータと該モータの出力軸に
連結したボールネジと該ボールネジのナットとで構成さ
れたNC機構を用い、加圧時の圧力を測定する機構を具
備し安定した溶接を行なうことを特徴とする抵抗溶接装
置。1. A resistance welding apparatus for welding a workpiece by pressurizing an object to be welded with an electrode equipped with a pressurizing mechanism and passing an electric current through the motor, which is connected to a motor and an output shaft of the motor for driving a pressing head. A resistance welding apparatus, which uses an NC mechanism composed of a ball screw and a nut of the ball screw, and is equipped with a mechanism for measuring a pressure at the time of pressurization to perform stable welding.
の結果により最適溶接条件を切換える制御装置を有する
抵抗溶接装置。2. A resistance welding apparatus having a control device for automatically measuring the length of an electrode using the above mechanism and switching the optimum welding condition according to the result.
に加圧し上下それぞれの溶接を行う機構と、上下同じタ
イミングで通電を開始する制御装置を有する抵抗溶接装
置。3. A resistance welding apparatus having a mechanism in which the above mechanisms are installed symmetrically in the vertical direction and simultaneously pressurizing from the upper and lower sides to perform welding on the upper and lower sides respectively, and a control device for starting energization at the same timing as the upper and lower sides.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8060576A JPH09248676A (en) | 1996-03-18 | 1996-03-18 | Resistance welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8060576A JPH09248676A (en) | 1996-03-18 | 1996-03-18 | Resistance welding machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09248676A true JPH09248676A (en) | 1997-09-22 |
Family
ID=13146223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8060576A Pending JPH09248676A (en) | 1996-03-18 | 1996-03-18 | Resistance welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09248676A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002144292A (en) * | 2000-11-14 | 2002-05-21 | Hitachi Via Mechanics Ltd | Drillling method for printed circuit board |
FR2822743A1 (en) * | 2001-03-29 | 2002-10-04 | Aro | ASSEMBLY CLIPPERS WITH SELF-ADAPTIVE CALIBRATION AND BALANCING DEVICE |
WO2003095137A1 (en) * | 2002-05-10 | 2003-11-20 | Honda Giken Kogyo Kabushiki Kaisha | Spot welding system and its control method |
CN110011155A (en) * | 2019-04-16 | 2019-07-12 | 东莞市良讯电子科技有限公司 | A kind of automatic bonding equipment of data line |
-
1996
- 1996-03-18 JP JP8060576A patent/JPH09248676A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002144292A (en) * | 2000-11-14 | 2002-05-21 | Hitachi Via Mechanics Ltd | Drillling method for printed circuit board |
JP4526690B2 (en) * | 2000-11-14 | 2010-08-18 | 日立ビアメカニクス株式会社 | Printed circuit board drilling method |
FR2822743A1 (en) * | 2001-03-29 | 2002-10-04 | Aro | ASSEMBLY CLIPPERS WITH SELF-ADAPTIVE CALIBRATION AND BALANCING DEVICE |
WO2002078892A1 (en) * | 2001-03-29 | 2002-10-10 | Aro | Welding clamp-robot with self-adapting relieving and balancing device |
WO2003095137A1 (en) * | 2002-05-10 | 2003-11-20 | Honda Giken Kogyo Kabushiki Kaisha | Spot welding system and its control method |
CN110011155A (en) * | 2019-04-16 | 2019-07-12 | 东莞市良讯电子科技有限公司 | A kind of automatic bonding equipment of data line |
CN110011155B (en) * | 2019-04-16 | 2024-05-03 | 东莞市良讯电子科技有限公司 | Automatic wire bonding machine for data wire |
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