JPH0237265B2 - - Google Patents
Info
- Publication number
- JPH0237265B2 JPH0237265B2 JP56107914A JP10791481A JPH0237265B2 JP H0237265 B2 JPH0237265 B2 JP H0237265B2 JP 56107914 A JP56107914 A JP 56107914A JP 10791481 A JP10791481 A JP 10791481A JP H0237265 B2 JPH0237265 B2 JP H0237265B2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- welding
- current
- discharge type
- welding machine
- 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
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
- B23K11/24—Electric supply or control circuits therefor
- B23K11/26—Storage discharge welding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶接電流の大きさ及び放電時間を制
御できるコンデンサ放電形スタツド溶接機の溶接
電流制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a welding current control method for a capacitor discharge type stud welding machine that can control the magnitude of welding current and discharge time.
従来のコンデンサ放電形スタツド溶接機は、第
１図に示すように、交流電源を整流して直流とな
す整流回路を含む充電回路１から、リアクトル２
を通じてコンデンサ３に所定の電荷を充電し、ゲ
ートトリガー回路の信号よりリアクトル２、サイ
リスタ４、スタツド用ガン５を通じて溶接物７か
ら被溶接物６に電流を流して溶接部を局部的に加
熱し、溶接物７を被溶接物に溶着するようにして
いた。
As shown in Fig. 1, a conventional capacitor discharge type stud welding machine connects a charging circuit 1 that includes a rectifier circuit that rectifies an AC power source to a DC power source, and a reactor 2.
A predetermined charge is charged to the capacitor 3 through the gate trigger circuit, and a current is passed from the workpiece 7 to the workpiece 6 through the reactor 2, thyristor 4, and stud gun 5 based on the signal from the gate trigger circuit to locally heat the welding part. The welding object 7 was welded to the object to be welded.
このコンデンサ放電形スタツド溶接の原理を更
に詳しく説明すると、スタツド用ガン５を通じて
放電されるコンデンサ３の電荷が第６図に示すよ
うな溶接物７の先端の突起１６を通じて流れ、先
端の突起１６が溶融することによつてアークが発
生し、それとほとんど同時にスタツド用ガン５の
内部にあるスプリングの力によつて溶接物が被溶
接物に押し当てられ、溶接が完了することなつて
いた。 To explain the principle of this capacitor discharge type stud welding in more detail, the electric charge of the capacitor 3 discharged through the stud gun 5 flows through the protrusion 16 at the tip of the workpiece 7 as shown in FIG. An arc was generated by the melting, and almost at the same time, the force of the spring inside the stud gun 5 pressed the workpiece against the workpiece, completing the welding.
ところが、この溶接が開始してから溶接が完了
するまでの溶接電流の大きさと時間の関係は、そ
の回路のもつ時定数と、コンデンサの充電電圧に
よつて決定され、しかも、この電流の流れ方と上
記スプリングの加圧力は溶接の良否と密接な関係
があり、更には溶接物の形状や材料によつても変
える必要があつた。
However, the relationship between the magnitude of the welding current and the time from the start of welding to the completion of welding is determined by the time constant of the circuit and the charging voltage of the capacitor. The pressure applied by the spring is closely related to the quality of welding, and it also needs to be changed depending on the shape and material of the welded object.
この場合、コンデンサの充電電圧は充電回路１
を制御することによつて可能であり、時定数はリ
アクトルあるいはコンデンサの容量等を段階的に
変える等してある程度は変化させることは可能で
あるが、時定数の曲線は一般的には第４図に示す
ように一定のカーブとなつているので、仮に時定
数を長くして持続的な電流を得ようとする場合、
最初は徐々に流れて、中間部で大きな電流や流
れ、最後は徐々に小さな電流が流れるという一山
型パターンになるので、時定数を余り長くしても
期待した電流波形は得られないという問題点があ
つた。 In this case, the charging voltage of the capacitor is the charging circuit 1
Although it is possible to change the time constant to some extent by changing the reactor or capacitance in stages, the time constant curve is generally As shown in the figure, it is a constant curve, so if you try to obtain a continuous current by increasing the time constant,
The problem is that even if the time constant is made too long, the expected current waveform cannot be obtained because the current flows gradually at first, then a large current or current flows in the middle, and finally a small current flows gradually. The dot was hot.
本発明はこのような事情に鑑みなされたもの
で、溶接部を流れる電流の時間的変化をある程度
自由に変えることができるコンデンサ放電形スタ
ツド溶接機の溶接電流制御方法を提供することを
目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a welding current control method for a capacitor discharge type stud welding machine that can freely change the temporal change in the current flowing through the welding part to some extent. .
上記目的に沿う本発明に係るコンデンサ放電形
スタツド溶接機の溶接電流制御方法は、コンデン
サを２群あるいは３群以上に分割し、各々にサイ
リスタの如くスイツチを設け、溶接時に少しの遅
延時間をもたせて上記コンデンサの電荷を連続的
に放電させるようにして構成されている。
A welding current control method for a capacitor discharge type stud welding machine according to the present invention in accordance with the above object divides the capacitor into two or three or more groups, and each group is provided with a switch like a thyristor to provide a small delay time during welding. The capacitor is configured so that the charge in the capacitor is continuously discharged.
ここに、分割されたコンデンサの独立の電源に
よつて充電する場合も本発明は適用される。 The present invention is also applicable to the case where divided capacitors are charged by independent power sources.
本発明に係るコンデンサ放電形スタツド溶接機
の溶接電流制御方法は、熱として利用する電荷を
充電するコンデンサを２群あるいは３群に分割
し、各々にサイリスタの如くスイツチを取付け、
溶接時に少しの遅延時間をもたせて上記コンデン
サの電荷を連続的に放電するようにしているの
で、最初から溶接電流を立ち上げることが可能と
なり、溶接条件に一致する電流を自由に決定する
ことが可能となる。
The welding current control method for a capacitor discharge type stud welding machine according to the present invention divides capacitors that charge electric charges used as heat into two or three groups, and attaches a switch to each group like a thyristor.
Since the charge in the capacitor is continuously discharged with a small delay time during welding, it is possible to start up the welding current from the beginning, and it is possible to freely determine the current that matches the welding conditions. It becomes possible.
続いて、添付した図面を参照しつつ、本発明を
具体化した実施例につき説明し、本発明の理解に
供する。
Next, embodiments embodying the present invention will be described with reference to the attached drawings to provide an understanding of the present invention.
第２図に本発明方法を適用したコンデンサ放電
形スタツド溶接機を示すが、図に示すように溶接
エネルギーを充電するコンデンサはコンデンサ１
０，１１に２分割され、これらにはそれぞれリア
クトル１４，１５を介してスイツチの一例である
サイリスタ１２，１３を介してスタツド用ガン５
に接続されている。 Figure 2 shows a capacitor discharge type stud welding machine to which the method of the present invention is applied.
0 and 11, and these are connected to a stud gun 5 via reactors 14 and 15, and thyristors 12 and 13, which are examples of switches.
It is connected to the.
上記コンデンサ１０，１１には逆流防止のダイ
オード８，９を介して充電回路１に接続されてい
る。 The capacitors 10 and 11 are connected to the charging circuit 1 via diodes 8 and 9 for preventing backflow.
従つて、コンデンサ１０，１１を所定の電圧に
充電した後、ゲートトリガ回路を駆動してサイリ
スタ１２，１３をT2時間ずらして点弧させると、
第５図に示すように波形が重複して起動時の立ち
上げを急峻にして当初の電流を増加することがで
きる。 Therefore, after charging the capacitors 10 and 11 to a predetermined voltage, if the gate trigger circuit is driven to fire the thyristors 12 and 13 with a delay of T 2 hours,
As shown in FIG. 5, the waveforms overlap, making it possible to increase the initial current by making the startup steeper.
また、第３図に示すように充電回路を独立に設
けることも可能であり、これによつてコンデンサ
１０，１１の電圧を自由に選ぶことができ、更に
はコンデンサを３群以上に分割し、おのおの充電
電圧と放電電流を適当に設定することによつて任
意の電流波形にすることができる。 Furthermore, as shown in FIG. 3, it is also possible to provide an independent charging circuit, which allows the voltages of the capacitors 10 and 11 to be freely selected.Furthermore, it is possible to divide the capacitors into three or more groups, By appropriately setting each charging voltage and discharging current, an arbitrary current waveform can be obtained.
ここで、上記コンデンサを多数の群に分割して
制御する場合には、マイクロコンピユータを使用
して制御すれば適切な電流波形を得ることが容易
にできる。 Here, when controlling the capacitors by dividing them into a large number of groups, it is possible to easily obtain an appropriate current waveform by controlling the capacitors using a microcomputer.
本発明に係るコンデンサ放電形スタツド溶接機
の溶接電流制御方法は、以上の説明からも明らか
なように、各コンデンサの容量、分割数、スイツ
チの点弧時期等を調整することによつて自由に電
流波形を制御できるので、スタツド用ガンのスプ
リングの強さ、溶接物の形状及び材料に応じた溶
接条件を幅広く選定することができ、スタツド溶
接の適用範囲を拡げることが可能となつた。
As is clear from the above explanation, the welding current control method for a capacitor discharge type stud welding machine according to the present invention can be freely controlled by adjusting the capacity of each capacitor, the number of divisions, the ignition timing of the switch, etc. Since the current waveform can be controlled, welding conditions can be selected from a wide range depending on the spring strength of the stud gun, the shape and material of the workpiece, and it has become possible to expand the range of applications of stud welding.
また、コンデンサを分割することによつてリア
クトルのインダクタンスは小さくすることも可能
となり、更には、積極的に回路自身のインダクタ
ンスを利用すればリアクトルを省略できる場合も
生じることとなつた。 Furthermore, by dividing the capacitor, it is possible to reduce the inductance of the reactor, and furthermore, there are cases where the reactor can be omitted by actively utilizing the inductance of the circuit itself.
第１図は従来のコンデンサ放電形スタツド溶接
機の代表例の回路図、第２図及び第３図は本発明
に係るコンデンサ放電形スタツド溶接機の溶接電
流制御方法を適用した溶接機の回路図、第４図は
従来のコンデンサ放電形スタツド溶接機の溶接電
流の波形図、第５図は本発明方法の一実施例の波
形図、第６図は溶接物の断面図である。
〔符号の説明〕、１……充電回路、２……リア
クトル、３……コンデンサ、４……サイリスタ、
５……スタツド用ガン、６……被溶接物、７……
溶接物、８，９……ダイオード、１０，１１……
コンデンサ、１２，１３……サイリスタ、１４，
１５……リアクトル、１６……突起。
Fig. 1 is a circuit diagram of a typical example of a conventional capacitor discharge type stud welding machine, and Figs. 2 and 3 are circuit diagrams of a welding machine to which the welding current control method for a capacitor discharge type stud welding machine according to the present invention is applied. 4 is a waveform diagram of welding current of a conventional capacitor discharge type stud welding machine, FIG. 5 is a waveform diagram of an embodiment of the method of the present invention, and FIG. 6 is a sectional view of a welded workpiece. [Explanation of symbols], 1... Charging circuit, 2... Reactor, 3... Capacitor, 4... Thyristor,
5... Stud gun, 6... Work to be welded, 7...
Welding object, 8, 9... Diode, 10, 11...
Capacitor, 12, 13... Thyristor, 14,
15...Reactor, 16...Protrusion.
Claims (1)
し、各々にサイリスタの如くスイツチを設け、溶
接時に少しの遅延時間をもたせて上記コンデンサ
の電荷を連続的に放電させることを特徴とするコ
ンデンサ放電形スタツド溶接機の溶接電流制御方
法。 ２ 分割したコンデンサを独立の電源によつて充
電する特許請求の範囲第１項記載のコンデンサ放
電形スタツド溶接機。[Claims] 1. The capacitor is divided into two or three or more groups, each of which is provided with a switch like a thyristor, and the charge in the capacitor is continuously discharged with a slight delay time during welding. A welding current control method for a capacitor discharge type stud welding machine. 2. A capacitor discharge type stud welding machine according to claim 1, in which the divided capacitors are charged by an independent power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10791481A JPS589773A (en) | 1981-07-08 | 1981-07-08 | Capacitor discharge type stud welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10791481A JPS589773A (en) | 1981-07-08 | 1981-07-08 | Capacitor discharge type stud welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS589773A JPS589773A (en) | 1983-01-20 |
| JPH0237265B2 true JPH0237265B2 (en) | 1990-08-23 |
Family
ID=14471249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10791481A Granted JPS589773A (en) | 1981-07-08 | 1981-07-08 | Capacitor discharge type stud welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116669U (en) * | 1991-04-02 | 1992-10-19 | 財団法人工業技術研究院 | Internal combustion engine fuel injection system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071139A (en) * | 1993-06-17 | 1995-01-06 | Japan Drive-It Co Ltd | Stud welder |
| JP4642215B2 (en) * | 2000-12-05 | 2011-03-02 | アジア技研株式会社 | Capacitor discharge type stud welding method |
| DE102004034752A1 (en) * | 2004-07-17 | 2006-02-02 | Michael Flemke | Ignition circuit for a stud welder |
| DE102016119903A1 (en) * | 2016-10-19 | 2018-04-19 | SER Elektronik & Schweißtechnik GmbH | Method and device for resistance welding by means of capacitor discharge |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5754930Y2 (en) * | 1976-08-06 | 1982-11-27 | ||
| JPS5837064B2 (en) * | 1977-07-28 | 1983-08-13 | 松下電器産業株式会社 | Power supply for stud welding |
-
1981
- 1981-07-08 JP JP10791481A patent/JPS589773A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116669U (en) * | 1991-04-02 | 1992-10-19 | 財団法人工業技術研究院 | Internal combustion engine fuel injection system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS589773A (en) | 1983-01-20 |
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