JPS632706B2 - - Google Patents
Info
- Publication number
- JPS632706B2 JPS632706B2 JP4735978A JP4735978A JPS632706B2 JP S632706 B2 JPS632706 B2 JP S632706B2 JP 4735978 A JP4735978 A JP 4735978A JP 4735978 A JP4735978 A JP 4735978A JP S632706 B2 JPS632706 B2 JP S632706B2
- Authority
- JP
- Japan
- Prior art keywords
- secondary winding
- switch
- winding
- primary winding
- transformer
- 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
- 238000004804 winding Methods 0.000 claims description 63
- 238000003466 welding Methods 0.000 claims description 27
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
Landscapes
- Arc Welding Control (AREA)
Description
【発明の詳細な説明】
本発明は連動するスイツチを切換えるのみで定
電圧特性と垂下特性の切換えが行なえる直流アー
ク溶接機を提供するものである。CO2溶接やMIG
溶接又直流TIG溶接や手溶接の諸機能を一台の溶
接機に持たせるには、定電圧特性から垂下特性ま
で得られるようにしなければならない。第１図
ａ，ｂはそれぞれ上記諸機能を具備した直流アー
ク溶接機を示しており、第１図ａ，ｂにおいて、
１は定電圧型主変圧器、２は垂下用インピーダン
ス、３は整流器、４は定電圧と垂下の切り換え用
スイツチ、５は逆極性と正極性の切り換え用スイ
ツチ、６は溶接用トーチ、７は被溶接物、８はサ
イリスタなどの出力調整器及び整流器、９は溶接
出力比例信号と基準信号との比較増巾器、１０は
基準信号発生器、１１は溶接電流比例信号発生器
である。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a DC arc welding machine that can switch between constant voltage characteristics and drooping characteristics simply by switching interlocking switches. CO2 welding or MIG
In order to provide welding, DC TIG welding, and manual welding functions in a single welding machine, it must be able to obtain everything from constant voltage characteristics to droop characteristics. Figures 1a and b show DC arc welding machines equipped with the above functions, and in Figures 1a and b,
1 is a constant voltage type main transformer, 2 is an impedance for drooping, 3 is a rectifier, 4 is a switch for switching between constant voltage and drooping, 5 is a switch for switching between reverse polarity and positive polarity, 6 is a welding torch, and 7 is a 8 is an output regulator such as a thyristor and a rectifier; 9 is an amplifier for comparing the welding output proportional signal with a reference signal; 10 is a reference signal generator; and 11 is a welding current proportional signal generator.
Γ 第１図ａの場合、
CO2やMIG溶接時はスイツチ４を短絡し、同時
にスイツチ５にて逆極性（被溶接物側がマイナ
ス）が得られるようにし、一方直流TIGや手溶接
時にはスイツチ４を開放し、インピーダンス２に
て垂下特性を得、同時にスイツチ５にて正極性
（被溶接物側がプラス）になるよう回路構成した
ものである。Γ In the case of Fig. 1 a, switch 4 is short-circuited when CO 2 or MIG welding, and at the same time switch 5 is set to obtain the opposite polarity (minus on the workpiece side), while switch 4 is short-circuited during DC TIG or manual welding. The circuit is configured such that the impedance is set to 2 to obtain a drooping characteristic, and at the same time, the switch 5 is set to positive polarity (positive on the welded object side).
Γ 第１図ｂの場合
CO2やMIG溶接時には、スイツチ４を開放し基
準信号で決まる無負荷電圧を持つ定電圧特性が得
られる。同時にスイツチ５は逆極性の側にしてお
く。一方、直流TIGや手溶接時はスイツチ４を短
絡し、出力電流比例信号を比較増巾器９へフイー
ドバツクし垂下特性を得るようにしたものであ
り、スイツチ５は正極性の側にしておくものであ
る。Γ In the case of Fig. 1b, during CO 2 or MIG welding, switch 4 is opened and a constant voltage characteristic with no-load voltage determined by the reference signal is obtained. At the same time, switch 5 is set to the opposite polarity side. On the other hand, during DC TIG or manual welding, switch 4 is short-circuited and the output current proportional signal is fed back to comparison amplifier 9 to obtain drooping characteristics, and switch 5 is kept on the positive polarity side. It is.
しかしながら、第１図ａに示す直流アーク溶接
機においては、垂下特性を得るためのインピーダ
ンス２として、定電圧型変圧器１の出力電圧を全
部吸収し得るだけの大きなものが必要となり、第
１図ｂに示すものは出力調整器８にサイリスタを
用い位相制御をすると特に単相を入力とした場合
に、出力電流のリツプルが問題となり、大きな平
滑用リアクトルが必要となるものであり、第１図
ａ，ｂともに非経済的である。又それだけケース
内のスペースも必要となる欠点がある。 However, in the DC arc welding machine shown in Fig. 1a, the impedance 2 needed to be large enough to absorb the entire output voltage of the constant voltage transformer 1 is required to obtain the drooping characteristic. In the case shown in b, if a thyristor is used in the output regulator 8 for phase control, ripples in the output current become a problem, especially when a single phase is input, and a large smoothing reactor is required. Both a and b are uneconomical. Another drawback is that it requires more space inside the case.
本発明は上記従来の欠点を除去し定電圧型変圧
器の巻線の接続を、スイツチにて切り換えるだけ
で定電圧特性の溶接機から垂下特性の溶接機への
切り換えを可能とする直流アーク溶接機を提供す
るものである。 The present invention eliminates the above-mentioned conventional drawbacks and enables direct current arc welding to switch from a welding machine with constant voltage characteristics to a welding machine with drooping characteristics by simply switching the connection of the windings of a constant voltage transformer. It provides an opportunity for
以下に本発明の実施例について第２図乃至第４
図を参照して説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 to 4.
This will be explained with reference to the figures.
第２図において、２１は交流電源、２２は変圧
器である。変圧器２２は、四角形状のコア２３
と、この四角形状のコア２３の一辺に重ね巻きさ
れた第１の一次巻線２４および第１の二次巻線２
５と、前記コア２３の一辺に対向する辺に重ね巻
きされた第２の一次巻線２６および第２の二次巻
線２７により構成されている。第１の一次巻線２
４の一端ａと第２の一次巻線２６の一端a′とは共
通接続されて一方の入力端子２１ａに接続されて
いる。他方の入力端子２１ｂは第１の一次巻線２
４の他端ｂに接続するとともに、開閉スイツチ２
８を介して第２の一次巻線２６の他端b′に接続し
てある。 In FIG. 2, 21 is an AC power supply and 22 is a transformer. The transformer 22 has a rectangular core 23
The first primary winding 24 and the first secondary winding 2 are wound around one side of the square core 23.
5, a second primary winding 26 and a second secondary winding 27 which are wound overlappingly on the side opposite to one side of the core 23. First primary winding 2
One end a of the second primary winding 26 and one end a' of the second primary winding 26 are commonly connected to one input terminal 21a. The other input terminal 21b is the first primary winding 2
4 and the open/close switch 2
8 to the other end b' of the second primary winding 26.
２９は変圧器２２の出力を整流する整流器であ
り、この整流器２９の一方の入力側端子には第１
の二次巻線２５の一端ｃと第２の二次巻線２７の
一端c′が共通接続されている。整流器２９の他方
の入力側端子には単極双投型スイツチ３０の共通
可動接点３０ａが接続されている。この単極双投
型スイツチ３０の一方の固定接点３０ｂは第１の
二次巻線２５の他端ｄに接続されている。第１の
二次巻線２５と第２の二次巻線２７にはそれぞれ
互いに連動するスライド端子ｅ，e′が設けられて
おり、スライド端子ｅおよびスライド端子e′は単
極双投型スイツチ３０の他方の固定接点３０ｃに
共通接続されている。前述の開閉スイツチ２８と
単極双投型スイツチ３０は連動し、開閉スイツチ
２８が閉成しているときは単極双投型スイツチ３
０の共通可動接点３０ａと固定接点３０ｃが接続
され、開閉スイツチ２８が開放しているときは単
極双投型スイツチの共通可動接点３０ａと固定接
点３０ｂが接続されるようになつている。 29 is a rectifier that rectifies the output of the transformer 22, and one input side terminal of this rectifier 29 has a first
One end c of the secondary winding 25 and one end c' of the second secondary winding 27 are commonly connected. A common movable contact 30a of a single-pole double-throw switch 30 is connected to the other input terminal of the rectifier 29. One fixed contact 30b of this single-pole double-throw switch 30 is connected to the other end d of the first secondary winding 25. The first secondary winding 25 and the second secondary winding 27 are respectively provided with slide terminals e and e' that interlock with each other, and the slide terminals e and e' are single-pole double-throw switches. It is commonly connected to the other fixed contact 30c of 30. The above-mentioned on-off switch 28 and single-pole double-throw switch 30 are interlocked, and when the on-off switch 28 is closed, the single-pole double-throw switch 3
0 common movable contact 30a and fixed contact 30c are connected, and when the open/close switch 28 is open, the common movable contact 30a and fixed contact 30b of the single pole double throw type switch are connected.
３１は溶接用トーチ、３２は被溶接物であり、
溶接負荷を構成している。３３は整流器２９と溶
接負荷との間に接続された切り換え用スイツチで
あり、溶接負荷に供給される出力の極性を切り換
えるためのものである。 31 is a welding torch, 32 is an object to be welded,
It constitutes the welding load. A switch 33 is connected between the rectifier 29 and the welding load, and is used to switch the polarity of the output supplied to the welding load.
上記構成を電気回路として示すと第３図のよう
になる。 The above configuration is shown as an electric circuit as shown in FIG.
上記第２図および第３図に示す構成において、
開閉スイツチ２８を閉成すると、単極双投型スイ
ツチ３０の共通可動接点と固定接点３０ｃが接続
される。この状態は、第１の一次巻線２４と第２
の一次巻線２６が並列接続された状態であり、か
つ、第１の二次巻線２５の端子ｅ，ｃ間の巻線と
第２の二次巻線２７の端子e′，c′間の巻線が並列
接続された状態である。この状態において、第１
の一次巻線２４および第２の一次巻線２６に電流
を流すことにより発生する磁束は、第１の二次巻
線２５の端子ｅ，ｃ間の巻線および第２の二次巻
線２７の端子e′，c′間の巻線に良く鎖交するた
め、その出力特性は第４図ａに示すような定電圧
特性となる。なお、出力電圧の大きさは、スライ
ド端子ｅ，e′の位置によつて調整できる。 In the configuration shown in FIGS. 2 and 3 above,
When the open/close switch 28 is closed, the common movable contact and the fixed contact 30c of the single-pole double-throw switch 30 are connected. In this state, the first primary winding 24 and the second
The primary windings 26 are connected in parallel, and the winding between the terminals e and c of the first secondary winding 25 and the terminals e' and c' of the second secondary winding 27 windings are connected in parallel. In this state, the first
The magnetic flux generated by passing a current through the primary winding 24 and the second primary winding 26 flows through the winding between the terminals e and c of the first secondary winding 25 and the second secondary winding 27. Since it interlinks well with the winding between the terminals e' and c', its output characteristic becomes a constant voltage characteristic as shown in FIG. 4a. Note that the magnitude of the output voltage can be adjusted by adjusting the positions of the slide terminals e and e'.
次に、開閉スイツチ２８を開放すると、単極双
投型スイツチ３０の共通可動接点３０ａと固定接
点３０ｂが接続される。この状態は、第１の一次
巻線２４が一対の入力端子２１ａ，２１ｂに接続
されているが、第２の一次巻線２６は入力端子２
１ｂに接続されていない。また、第１の二次巻線
２５の端子ｅ，ｃ間の巻線と第２の二次巻線２７
の端子e′，c′間の巻線が並列接続となり、この並
列接続体に第１の二次巻線２５の端子ｄ，ｅ間の
巻線が直列接続された状態となつている。この状
態において、第１の一次巻線２４に電流を流すこ
とにより発生する磁束は第１の二次巻線２５とよ
く鎖交するため定電圧特性を示すが、第２の二次
巻線２７は第１の一次巻線２４が巻回されたコア
２３の一辺に対向する辺に巻回されているため、
第１の一次巻線２４により発生する磁束が第２二
次巻線２７に鎖交しにくく、垂下特性を示す。従
つて、定電圧特性を示す第１の二次巻線２５の出
力電圧と、垂下特性を示す第２の二次巻線２７の
端子e′，c′間の出力電圧との合成出力電圧は、第
４図ｂに示すように緩い垂下特性を示す。なお、
この垂下特性の傾斜はスライド端子ｅ，e′の位置
によつて調整できる。 Next, when the on-off switch 28 is opened, the common movable contact 30a and the fixed contact 30b of the single-pole double-throw switch 30 are connected. In this state, the first primary winding 24 is connected to the pair of input terminals 21a and 21b, but the second primary winding 26 is connected to the input terminals 21a and 21b.
1b is not connected. Further, the winding between terminals e and c of the first secondary winding 25 and the second secondary winding 27
The windings between the terminals e' and c' of the first secondary winding 25 are connected in parallel, and the winding between the terminals d and e of the first secondary winding 25 is connected in series to this parallel connection. In this state, the magnetic flux generated by passing a current through the first primary winding 24 often interlinks with the first secondary winding 25 and therefore exhibits constant voltage characteristics. is wound on the side opposite to the side of the core 23 around which the first primary winding 24 is wound,
The magnetic flux generated by the first primary winding 24 is difficult to interlink with the second secondary winding 27, and exhibits drooping characteristics. Therefore, the composite output voltage of the output voltage of the first secondary winding 25 exhibiting constant voltage characteristics and the output voltage between terminals e' and c' of the second secondary winding 27 exhibiting drooping characteristics is , exhibits a gentle drooping characteristic as shown in FIG. 4b. In addition,
The slope of this drooping characteristic can be adjusted by adjusting the positions of the slide terminals e and e'.
以上のように本発明によれば、スイツチを切り
換えるだけで変圧器の巻線の接続関係を変更して
定電圧特性の変圧器と垂下特性の変圧器を切り換
えることができる。しかも垂下特性を得るための
特別な部品や出力電流を平滑するための大きなリ
アクトルを用いる必要がなく、構成が簡単であ
る。 As described above, according to the present invention, it is possible to change the connection relationship between the windings of the transformer and switch between a transformer with constant voltage characteristics and a transformer with droop characteristics by simply switching a switch. Furthermore, there is no need to use special parts for obtaining drooping characteristics or large reactors for smoothing the output current, and the configuration is simple.
第１図ａ，ｂはそれぞれ従来の直流アーク溶接
機のブロツク図、第２図は本発明の一実施例にお
ける直流アーク溶接機の概略図、第３図は同電気
回路図、第４図ａ，ｂはそれぞれ同直流アーク溶
接機の出力特性図である。
２２……変圧器、２３……コア、２４……第１
の一次巻線、２５……第１の二次巻線、２６……
第２の一次巻線、２７……第２の二次巻線、２８
……開閉スイツチ、２９……整流器、３０……単
極双投型スイツチ、３１……溶接用トーチ、３２
……被溶接物。
Figures 1a and b are block diagrams of conventional DC arc welding machines, Figure 2 is a schematic diagram of a DC arc welding machine according to an embodiment of the present invention, Figure 3 is an electrical circuit diagram of the same, and Figure 4a , b are output characteristic diagrams of the same DC arc welding machine. 22...Transformer, 23...Core, 24...First
primary winding, 25...first secondary winding, 26...
Second primary winding, 27... Second secondary winding, 28
... Open/close switch, 29 ... Rectifier, 30 ... Single pole double throw switch, 31 ... Welding torch, 32
...The object to be welded.
Claims (1)
へ電力供給する整流器とを備え、前記変圧器は、
四角形状のコアの一辺に第１の一次巻線と第１の
二次巻線を重ね巻きし、前記コアの一辺に対向す
る辺に第２の一次巻線と第２の二次巻線を重ね巻
きし、前記第１の二次巻線および前記第２の二次
巻線にそれぞれ互いに連動するスライド端子を設
け、前記第１の一次巻線の一端と前記第２の一次
巻線の一端を共通接続して一方の入力端子とし、
他方の入力端子を前記第１の一次巻線の他端に接
続するとともに開閉スイツチを介して前記第２の
一次巻線の他端に接続し、前記第１の二次巻線の
一端と前記第２の二次巻線の一端を共通接続して
前記整流器の一方の入力端子に接続し、前記整流
器の他方の入力端子に前記開閉スイツチに連動す
る単極双投型スイツチの共通端子を接続し、前記
開閉スイツチの閉成時に閉成する前記単極双投型
スイツチの一方の接点を前記第１の二次巻線のス
ライド端子および前記第２の二次巻線のスライド
端子に共通接続し、前記単極双投型スイツチの他
方の接点を前記第１の二次巻線の他端に接続した
直流アーク溶接機。1 comprising a transformer and a rectifier that rectifies the output of the transformer and supplies power to the welding load, the transformer comprising:
A first primary winding and a first secondary winding are wound overlappingly on one side of a square core, and a second primary winding and a second secondary winding are wound on a side opposite to the one side of the core. The first secondary winding and the second secondary winding are each provided with slide terminals that interlock with each other, one end of the first primary winding and one end of the second primary winding. Connect them in common and use them as one input terminal,
The other input terminal is connected to the other end of the first primary winding and also connected to the other end of the second primary winding via an on/off switch, so that one end of the first secondary winding and the One end of the second secondary winding is commonly connected and connected to one input terminal of the rectifier, and the other input terminal of the rectifier is connected to the common terminal of a single-pole double-throw switch that is interlocked with the on/off switch. and one contact of the single-pole double-throw switch that closes when the on-off switch is closed is commonly connected to the slide terminal of the first secondary winding and the slide terminal of the second secondary winding. and the other contact of the single pole double throw switch is connected to the other end of the first secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4735978A JPS54138841A (en) | 1978-04-20 | 1978-04-20 | Dc arc welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4735978A JPS54138841A (en) | 1978-04-20 | 1978-04-20 | Dc arc welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54138841A JPS54138841A (en) | 1979-10-27 |
| JPS632706B2 true JPS632706B2 (en) | 1988-01-20 |
Family
ID=12772923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4735978A Granted JPS54138841A (en) | 1978-04-20 | 1978-04-20 | Dc arc welder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54138841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10827763B2 (en) | 2014-09-04 | 2020-11-10 | Solvay Sa | Method for the prophylactic treatment of a food product silo |
-
1978
- 1978-04-20 JP JP4735978A patent/JPS54138841A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10827763B2 (en) | 2014-09-04 | 2020-11-10 | Solvay Sa | Method for the prophylactic treatment of a food product silo |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54138841A (en) | 1979-10-27 |
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