JPH0573513B2 - - Google Patents
Info
- Publication number
- JPH0573513B2 JPH0573513B2 JP18613984A JP18613984A JPH0573513B2 JP H0573513 B2 JPH0573513 B2 JP H0573513B2 JP 18613984 A JP18613984 A JP 18613984A JP 18613984 A JP18613984 A JP 18613984A JP H0573513 B2 JPH0573513 B2 JP H0573513B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- signal
- current
- welding
- output
- 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 - Fee Related
Links
- 238000003466 welding Methods 0.000 claims description 85
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 21
- 230000000694 effects Effects 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (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2以上の部分に分離し相互間をケーブ
ルで結合した分離形アーク溶接機に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a separate type arc welding machine that is separated into two or more parts and connected to each other by a cable.
アーク溶接機においては溶接電源部、ワイヤ送
給制御部、出力調整部などが一体となつたものも
あるが、これらはそれぞれ分離しておいた方が作
業性がよくなる。上記各部分を分離して設置した
ときはこれらの相互間をケーブルで接続して制御
信号の送受信を行うことが必要となる。この制御
信号には、例えば定電圧電源を用いる消耗電極式
アーク溶接機においては、出力調整部から溶接電
源部に対しては出力電圧設定信号および溶接開
始、停止信号が、逆に溶接電源部から出力調整部
に対しては溶接開始信号を自己保持するための溶
接電流検出信号をそれぞれ送信することが必要で
ある。また出力調整部とワイヤ送給制御部との間
においてはワイヤ送給速度設定値、即ち溶接電流
設定信号およびシールドガス放流指令信号が必要
であり、これらをそれぞれ専用の制御ケーブルに
て伝送するときはケーブルの心線数が多く必要と
なり、各装置間の離隔距離が長くなればなるほど
大量のケーブルが必要となつて装置が高価となる
だけでなく、心線数が増加することはそれだけ断
線の機会が増加し保守に多大の労力と費用とが必
要となる。これを解決せんとして制御ケーブルと
して溶接用パワーケーブルを兼用し溶接電流と制
御信号とを分離するために制御信号を電圧/周波
数変換回路にて一旦周波数信号に変換し、この周
波数信号を溶接用パワーケーブルを介して受信側
に送り、受信側で逆変換を行つて電圧信号に戻す
方法が考えられている。(例えば特開昭58−47569
号)
〔発明が解決しようとする問題点〕
しかるに上記従来技術においては、ケーブル数
を減少させることはできるが次のような重大な欠
点を有する。即ち、アーク溶接においては溶接電
流は極めて高速でランダムな変化をしており、そ
の電流および電圧波形には多くの高周波成分が含
まれている。しかもこの高周波成分は、溶接電力
そのものの変動に基づくものであから制御信号と
は比較にならない程の高エネルギーを有するため
に溶接中は制御信号と溶接電力と分離が完全に行
えず、このために極めて誤動作の発生しやすいも
のであつた。
Some arc welding machines have a welding power source, wire feed control, output adjustment, etc. all integrated, but it will be easier to work if these are separated. When the above-mentioned parts are installed separately, it is necessary to connect them with cables to transmit and receive control signals. For example, in a consumable electrode arc welding machine that uses a constant voltage power source, this control signal includes an output voltage setting signal and welding start/stop signals from the output adjustment section to the welding power source, and conversely, from the welding power source to the welding power source. It is necessary to transmit a welding current detection signal for self-maintaining a welding start signal to the output adjustment section. In addition, the wire feed speed setting value, that is, the welding current setting signal and the shielding gas discharge command signal, are required between the output adjustment section and the wire feed control section, and these are transmitted through dedicated control cables. Not only does this require a large number of cable cores, and the longer the distance between devices, the more cables are required and the equipment becomes more expensive. This increases the number of opportunities and requires a great deal of effort and expense for maintenance. To solve this problem, a welding power cable is also used as a control cable, and in order to separate the welding current and control signal, the control signal is converted into a frequency signal by a voltage/frequency conversion circuit, and this frequency signal is used as the welding power cable. A method has been considered in which the signal is sent to the receiving side via a cable, and the receiving side performs inverse conversion to return it to a voltage signal. (For example, JP-A-58-47569
(No.) [Problems to be Solved by the Invention] However, in the above-mentioned prior art, although the number of cables can be reduced, it has the following serious drawbacks. That is, in arc welding, the welding current changes randomly at extremely high speed, and the current and voltage waveforms contain many high frequency components. Moreover, this high frequency component is based on fluctuations in the welding power itself and has a high energy that is incomparable to the control signal, so it is impossible to completely separate the control signal from the welding power during welding. It was extremely easy for malfunctions to occur.
また上記方法においても信号は一方通行であ
り、同時に双方向に信号を送受信する必要のある
場合には、それぞれ別のケーブルを用意すること
が必要であり、ケーブル数の低減にはそれほど大
きな効果はなかつた。 In addition, even in the above method, the signal is one-way, and if it is necessary to send and receive signals in both directions at the same time, it is necessary to prepare separate cables for each, so it is not very effective in reducing the number of cables. Nakatsuta.
本発明は上記従来技術の欠点を解決し、溶接停
止中はもちろん溶接中においても溶接電流の影響
を全く受けず、しかも同一ケーブルに両端に接続
された両部分からの信号を同時に送受信すること
ができるようにしたアーク溶接機を提案したもの
である。 The present invention solves the above-mentioned drawbacks of the prior art, and is completely unaffected by the welding current not only when welding is stopped but also during welding, and moreover, it is possible to simultaneously transmit and receive signals from both parts connected to the same cable at both ends. We proposed an arc welding machine that could do this.
本発明は、分離して設置した一方の部分に出力
設定器の出力電圧をこれに対応する定電流信号に
変換する電圧/電流変換回路とこの電圧/電流変
換回路の出力電圧を検出してデイジイタル信号を
発生する出力電圧検出回路とを設け、他方の部分
に電流/電圧変換回路と送信すべきデイジイタル
信号に応じて入力回路のインピーダンスを段階的
に変化させる切替回路とを設けるとともにこの2
つの部分の間を一対の制御ケーブルで接続してア
ナログ信号とデイジイタル信号とを同時に送受信
可能としたものである。また上記信号伝送のため
のケーブルの一方として電力ケーブルの片線を共
用することによつてケーブル数をさらに減少させ
たものである。
The present invention includes a voltage/current conversion circuit that converts the output voltage of an output setting device into a corresponding constant current signal in one part installed separately, and a digital digital signal that detects the output voltage of this voltage/current conversion circuit. An output voltage detection circuit that generates a signal is provided, and the other part is provided with a current/voltage conversion circuit and a switching circuit that changes the impedance of the input circuit stepwise in accordance with the digital signal to be transmitted.
The two parts are connected by a pair of control cables to enable simultaneous transmission and reception of analog signals and digital signals. Furthermore, the number of cables is further reduced by sharing one wire of the power cable as one of the cables for signal transmission.
本発明は上記のようにアナログ信号である制御
用電圧信号を送信側で信号電圧に対応した定電流
信号に一旦変換してから送信し、受信側でこの電
流信号を電圧信号に逆変換して制御用電圧信号を
得るとともにアナログ信号の受信側で入力回路の
インピーダンスを送信すべきデイジイタル信号に
応じて段階的に切替えることによつてデイジイタ
ル信号を送信側に送るようにしたので、アナログ
信号とデイジイタル信号とを共通のケーブルによ
つて同時に送受信することが可能となるものであ
る。
As described above, the present invention first converts the control voltage signal, which is an analog signal, into a constant current signal corresponding to the signal voltage on the transmitting side, and then transmits it, and then converts this current signal inversely into a voltage signal on the receiving side. By obtaining a control voltage signal and switching the impedance of the input circuit on the analog signal receiving side in stages according to the digital signal to be transmitted, the digital signal is sent to the transmitting side. This makes it possible to simultaneously transmit and receive signals using a common cable.
第1図は本発明の実施例を示す接続図である。
同図において1は溶接電源であり、内部に三相交
流入力を溶接に適した特性の直流に変換する主回
路部101、入力信号電流を電圧信号に変換する
電流/電圧変換回路102、入力信号の有無によ
り論理信号を発生する入力信号検出回路103、
出力電圧制御回路104、溶接電流を検出するた
めの変流器105、変流器105の出力を受けて
リレーWCRを駆動する溶接電流検出回路106、
溶接電流検出回路106の出力接点WCRbと抵抗
器Rzとの並列回路からなるインピーダンス切替
回路107および制御電源回路108を含んでい
る。2消耗電極ワイヤ(以後単にワイヤという)
を溶接部に送給するためのワイヤ送給装置であ
り、内部にワイヤ送給用電動機201、電動機2
01によつて駆動されてワイヤリール202から
ワイヤ203を送給する送給用ロール204、溶
接電流設定器205の設定値に応じた速度に電動
機201の回転速度を制御するための電動機制御
回路206、シールドガス放出、停止や溶接開
始、停止などを制御するためのシーケンス制御部
207、溶接電圧を設定するための基準電圧信号
を出力する出力電圧設定器208、出力電圧設定
器208の出力電圧をこれに対応した定電流信号
に変換する電圧/電流変換回路209、電圧/電
流変換回路209の出力電圧を検出して入力電圧
の段階的変化に対応したデイジイタル信号を発生
する出力電圧検出回路210およびシールドガス
放流用電磁弁211を含んでいる。3は電圧/電
流変換回路209の出力電流信号を溶接電源1に
伝送するための単心ケーブルである。4はワイヤ
送給装置2に制御用の電力を供給する単心ケーブ
ルであり、ケーブル3およびケーブル4の各帰線
は溶接用パワーケーブル5a,5bうちの一方5
aを共用している。6は溶接トーチであり、溶接
開始指令用のトリガスイツチを内蔵している。7
は被溶接物であり通常大地電位である。また出力
電圧調整用信号および制御用電力の各帰線を溶接
用パワーケーブルの一方5aと共用するために溶
接用パワーケーブル5aは溶接電源1の制御回路
およびワイヤ送給装置2の制御回路の各接地線に
それぞれ接続する。また8はシールドガス供給源
であり、ガスホース9に溶接電源1およびワイヤ
送給装置2を介して溶接トーチ6に接続されてい
る。
FIG. 1 is a connection diagram showing an embodiment of the present invention.
In the figure, 1 is a welding power source, which includes a main circuit section 101 that converts three-phase AC input into DC with characteristics suitable for welding, a current/voltage conversion circuit 102 that converts an input signal current into a voltage signal, and an input signal. an input signal detection circuit 103 that generates a logic signal depending on the presence or absence of
an output voltage control circuit 104, a current transformer 105 for detecting the welding current, a welding current detection circuit 106 that receives the output of the current transformer 105 and drives the relay WCR,
It includes an impedance switching circuit 107 consisting of a parallel circuit of an output contact WCR b of a welding current detection circuit 106 and a resistor Rz , and a control power supply circuit 108. 2 Consumable electrode wire (hereinafter simply referred to as wire)
It is a wire feeding device for feeding wire to a welding part, and has a wire feeding electric motor 201 and an electric motor 2 inside.
01 to feed the wire 203 from the wire reel 202, and a motor control circuit 206 for controlling the rotational speed of the motor 201 to a speed according to the setting value of the welding current setting device 205. , a sequence control unit 207 for controlling shielding gas release, stopping, welding start, stop, etc., an output voltage setting device 208 that outputs a reference voltage signal for setting the welding voltage, and an output voltage setting device 208 for controlling the output voltage of the output voltage setting device 208. A voltage/current conversion circuit 209 converts the output voltage into a corresponding constant current signal, an output voltage detection circuit 210 detects the output voltage of the voltage/current conversion circuit 209, and generates a digital signal corresponding to the stepwise change in input voltage. It includes a solenoid valve 211 for shielding gas discharge. 3 is a single-core cable for transmitting the output current signal of the voltage/current conversion circuit 209 to the welding power source 1. Reference numeral 4 denotes a single-core cable that supplies power for control to the wire feeding device 2, and each return line of the cable 3 and the cable 4 is connected to one of the welding power cables 5a and 5b.
A is shared. 6 is a welding torch, which has a built-in trigger switch for commanding the start of welding. 7
is the object to be welded and is usually at ground potential. In addition, in order to share the return wires of the output voltage adjustment signal and the control power with one side of the welding power cable 5a, the welding power cable 5a is connected to the control circuit of the welding power source 1 and the control circuit of the wire feeding device 2. Connect each to the ground wire. Further, 8 is a shielding gas supply source, which is connected to the welding torch 6 through a gas hose 9, a welding power source 1, and a wire feeding device 2.
同図の実施例において、溶接を開始すべく溶接
トーチ6のトリガスイツチを閉じると、このスイ
ツチ閉路信号Sはシーケンス制御部207に送ら
れて先ずシールドガス放出用電磁弁211を開き
シールドガスを溶接トーチ6から放出する。シー
ルドガスの放出開始の後に電動機制御回路206
は電動機201を起動し、ワイヤ203を送り始
める。このワイヤ送給と同時に、またはこの少し
前にシーケンス制御部207は出力指令を発し、
溶接電源1は出力電圧の供給を開始する。シーケ
ンス制御部207からの指令信号に応答して出力
電圧設定器208の出力電圧Erを電圧/電源変換
回路209によつて設定電圧Erに対応した定電流
Irに変換して制御用ケーブル3および溶接用パワ
ーケーブル5を介して入力インピーダンス切替回
路107に供給する。入力インピーダンス切替回
路107の出力を受けて電流/電圧変換回路10
2にて電流信号Irをもとの電圧信号Erに戻し出力
電圧制御回路104に伝達する。また検出回路1
03は電流信号Irの受信により論理信号“1”を
出力電圧制御回路104に供給する。出力電圧制
御回路104はこの出力電圧制御信号Erと論理信
号“1”とを受けたときに主回路部101に対し
て出力調整信号を送り、主回路部101は溶接電
力を溶接トーチ6と被溶接物7とに供給し、溶接
が開始される。この出力電圧制御回路104の出
力としては主回路部101が単方向サイリスタに
より交流電源を位相制御整流するものであるとき
にはサイリスタに対する点弧パルス信号であり、
また主回路部101がトランジスタのようなアナ
ログ素子のときにはこれらの導通状態を制御する
アナログ信号である。 In the embodiment shown in the figure, when the trigger switch of the welding torch 6 is closed to start welding, this switch closing signal S is sent to the sequence control section 207, which first opens the shielding gas discharge electromagnetic valve 211 to weld the shielding gas. Emitted from torch 6. After the shield gas discharge starts, the motor control circuit 206
starts electric motor 201 and starts feeding wire 203. Simultaneously with this wire feeding, or a little before this, the sequence control unit 207 issues an output command,
Welding power source 1 starts supplying output voltage. In response to a command signal from the sequence control unit 207, the output voltage E r of the output voltage setter 208 is converted to a constant current corresponding to the set voltage E r by the voltage/power conversion circuit 209.
It is converted into Ir and supplied to the input impedance switching circuit 107 via the control cable 3 and the welding power cable 5. In response to the output of the input impedance switching circuit 107, the current/voltage conversion circuit 10
At step 2, the current signal I r is returned to the original voltage signal E r and transmitted to the output voltage control circuit 104 . Also, the detection circuit 1
03 supplies a logic signal "1" to the output voltage control circuit 104 upon receiving the current signal I r . When the output voltage control circuit 104 receives this output voltage control signal E r and the logic signal "1", it sends an output adjustment signal to the main circuit section 101, and the main circuit section 101 adjusts the welding power to the welding torch 6. The material to be welded is supplied to the workpiece 7, and welding is started. The output of the output voltage control circuit 104 is an ignition pulse signal for the thyristor when the main circuit section 101 uses a unidirectional thyristor to phase control rectify the AC power source.
Further, when the main circuit section 101 is an analog element such as a transistor, the signal is an analog signal that controls the conduction state of these elements.
一方溶接トーチのトリガスイツチを閉路した直
後の漸時の間はワイヤ203は未だ被溶接物7に
達しておらず、また溶接アークも発生していない
ので溶接電流は流れていない。このために変流器
105は出力を発生せず、出力電流検出回路10
6のリレーWCRは非励磁のままである。したが
つてリレーWCRの常閉接点WCRbは閉じたまま
であり、電流/電圧変換回路102の入力回路の
インピーダンスは低く、この結果電圧/電流変換
回路209の出力端子電圧は低くなる。このため
に出力電圧検出回路210は低電圧を検出し、溶
接の非開始状態をシーケンス制御部207に出力
する。ワイヤが被溶接物7に接触して溶接電流が
流れ始めると変流器105はこれを検出し溶接電
流検出回路106のリレーWCRが励磁されて接
点WCRbが開く。この結果電圧/電流変換回路2
09の出力回路のインピーダンスは高くなり、こ
の高いインピーダンスに対して定電流出力を保つ
ために電圧/電流変換回路209の出力電圧はIr
Rz分だけ高くなる。この高い出力電圧を受けて
出力電圧検出回路210は溶接電流検出信号をシ
ーケンス制御部207に出力する。したがつて抵
抗器Rzの値としてはこれが接続されることによ
つて発生する電圧/電流変換回路209の出力電
圧の変化が溶接電流の通電や他の雑音によつてケ
ーブル中に発生する電圧にくらべて十分高い値と
なるように設定しておくことが必要となる。 On the other hand, during the initial period immediately after the trigger switch of the welding torch is closed, the wire 203 has not yet reached the workpiece 7 and no welding arc is generated, so no welding current flows. Therefore, the current transformer 105 does not generate an output, and the output current detection circuit 10
Relay No. 6 WCR remains de-energized. Therefore, normally closed contact WCR b of relay WCR remains closed, the impedance of the input circuit of current/voltage conversion circuit 102 is low, and as a result, the output terminal voltage of voltage/current conversion circuit 209 becomes low. For this purpose, the output voltage detection circuit 210 detects a low voltage and outputs a welding non-starting state to the sequence control unit 207. When the wire contacts the workpiece 7 and welding current begins to flow, current transformer 105 detects this, and relay WCR of welding current detection circuit 106 is energized to open contact WCR b . As a result, voltage/current conversion circuit 2
The impedance of the output circuit 209 becomes high, and in order to maintain a constant current output against this high impedance, the output voltage of the voltage/current conversion circuit 209 becomes I r
It becomes higher by R z . In response to this high output voltage, output voltage detection circuit 210 outputs a welding current detection signal to sequence control section 207. Therefore, the value of the resistor Rz is determined by the change in the output voltage of the voltage/current conversion circuit 209 that occurs when it is connected to the voltage that occurs in the cable due to the welding current and other noises. It is necessary to set the value to be sufficiently high compared to .
通常シーケンス制御部207においては、溶接
電流が流れていない間はトリガスイツチの開閉に
直接応答して溶接電源1の出力を開閉し、溶接電
流が流れると一旦トリガスイツチを開放して後に
再度トリガスイツチを押すまでの間は溶接電流検
出信号によつて溶接開始指令を自己保持し続ける
ように回路構成されている。したがつて出力電圧
検出回路210の高電圧時の出力信号を溶接電流
検出信号としてシーケンス制御部207に供給す
れば溶接電圧設定信号伝送用ケーブルによつて溶
接電流検出信号も同時に伝送できることになる。
もちろんのこの信号は他の指令信号、例えばワイ
ヤ送給速度を溶接開始前の低速から実際の高速用
に切替えるための信号やシールドガスの流量や種
類の切替えまたは全自動溶接機における溶接トー
チの移動開始指令信号などとしても用いることが
できる。 Normally, the sequence control unit 207 opens and closes the output of the welding power source 1 in direct response to the opening and closing of the trigger switch while the welding current is not flowing, and when the welding current flows, the trigger switch is opened once and then the trigger switch is turned on again. The circuit is configured so that the welding start command continues to be held by the welding current detection signal until the welding current detection signal is pressed. Therefore, if the high voltage output signal of the output voltage detection circuit 210 is supplied to the sequence control section 207 as a welding current detection signal, the welding current detection signal can also be transmitted at the same time through the welding voltage setting signal transmission cable.
Of course, this signal is also used for other command signals, such as a signal for switching the wire feed speed from a low speed before welding starts to an actual high speed, switching the flow rate and type of shielding gas, or moving the welding torch in a fully automatic welding machine. It can also be used as a start command signal, etc.
なお、各部分を接続する信号伝送用ケーブルの
片線としては溶接用パワーケーブル共用するもの
の他に制御用電力を供給するためのケーブルを利
用してもよい。また定電流化された制御信号の受
信側に設けられる入力インピーダンスの切替回路
としては図示の例のように単に1つの抵抗器を
入、切するものの他に2つ以上の抵抗器を用いて
複数のデイジイタル化された信号により実効入力
インピーダンスを多数段に切替えるようにしても
よい。またこれらの抵抗器を定電圧ダイオードに
置換しても同様の効果が得られる。 Note that as one line of the signal transmission cable connecting each part, in addition to the welding power cable commonly used, a cable for supplying control power may be used. In addition, as an input impedance switching circuit provided on the receiving side of a constant current control signal, in addition to a circuit that simply turns on and off a single resistor as shown in the example shown in the figure, a plurality of input impedance switching circuits using two or more resistors can be used. The effective input impedance may be switched in multiple stages using the digitized signal. Also, similar effects can be obtained by replacing these resistors with constant voltage diodes.
さらに分離して設けられる溶接機の各部分とし
ては、溶接電源とワイヤ送給装置とを図示の例の
ようにするものの他に、溶接電源にワイヤ送給速
度設定器(即ち溶接電流設定器)を設けたもの、
出力調整器のみを別の遠隔制御箱に分離したもの
などその分離する対象は何でもよい。また使用す
る溶接電源が定電流特性のものを使用する場合に
は溶接電源に対して出力電流設定信号をまたワイ
ヤ送給装置に対しては溶接電圧設定信号を供給す
ればよい。 Furthermore, as for each part of the welding machine that is installed separately, in addition to the welding power source and the wire feeding device as shown in the example shown, the welding power source has a wire feeding speed setting device (i.e., welding current setting device). those with
The object to be separated may be anything, such as separating only the output regulator into a separate remote control box. Further, when the welding power source used has constant current characteristics, it is sufficient to supply an output current setting signal to the welding power source and a welding voltage setting signal to the wire feeding device.
以上のように本発明においては、伝送すべき電
圧信号をこれに対応する定電流信号に変換して送
るようにしたので、信号伝送ケーブルの一方に大
電力の通電するパワーケーブルを共用することに
よつてケーブル数を削減しても何ら悪影響を受け
ることがなく、また伝送するアナログ信号を定電
流化したので受信回路の入力インピーダンスをデ
イジイタル的に変えることによつて送信側の出力
電圧が変化し、この変化を定電流信号の送信側で
検出して受信側からのデイジイタル信号を判別す
ることができるので、アナログ信号とデイジイタ
ル信号とを同時の共通のケーブルにて双方向の送
受信を行うことができるのでケーブル本数を最少
にすることができる。
As described above, in the present invention, since the voltage signal to be transmitted is converted into a corresponding constant current signal and sent, it is possible to share a power cable that carries a large amount of power to one side of the signal transmission cable. Therefore, even if the number of cables is reduced, there will be no negative effects, and since the analog signal to be transmitted is made to be a constant current, the output voltage on the transmitting side can be changed by digitally changing the input impedance of the receiving circuit. Since this change can be detected on the constant current signal transmitting side and the digital signal from the receiving side can be determined, it is possible to simultaneously transmit and receive analog signals and digital signals in both directions using a common cable. This allows the number of cables to be minimized.
第1図は本発明の実施例を示す接続図である。
1……溶接電源、101……主回路部、102
……電流/電圧変換回路、103……入力信号検
出回路、104……出力電圧制御回路、105…
…変流器、106……溶接電流検出回路、107
……切替回路、2……ワイヤ送給装置、208…
…出力電圧設定器、209……電圧/電流変換回
路、210……出力電圧検出回路、3……ケーブ
ル、4……制御電力供給用ケーブル、5a,5b
……溶接用パワーケーブル。
FIG. 1 is a connection diagram showing an embodiment of the present invention. 1... Welding power source, 101... Main circuit section, 102
...Current/voltage conversion circuit, 103...Input signal detection circuit, 104...Output voltage control circuit, 105...
... Current transformer, 106 ... Welding current detection circuit, 107
...Switching circuit, 2...Wire feeding device, 208...
... Output voltage setting device, 209 ... Voltage/current conversion circuit, 210 ... Output voltage detection circuit, 3 ... Cable, 4 ... Control power supply cable, 5a, 5b
...Power cable for welding.
Claims (1)
つて結合した分離形アーク溶接機において、相互
に結合された各部分の一方にアナログ電圧信号を
発生する出力調整部、前記出力調整部の出力電圧
を該電圧に対応した定電流信号に変換して出力す
る電圧/電流変換回路および前記電圧/電流変換
回路の出力電圧を入力とし入力電圧に対応したデ
イジイタル信号を発生する出力電圧検出回路を設
け、前記一方の部分に対応する他方の部分に前記
一方の部分からの電流信号を電圧信号に変換する
電流/電圧変換回路と前記電流信号の入力回路の
実効インピーダンスを送信すべきデイジイタル信
号に応じて段階的に変化させる切換手段とを設
け、前記両部分の間を一対のケーブルで接続し
て、前記一方の部分からはアナログ信号をまた前
記他方の部分からはデイジイタル信号をそれぞれ
共通のケーブルにて同時に送受信する分離形アー
ク溶接機。 2 前記一対のケーブルの片方は溶接用パワーケ
ーブルまたは制御用電力供給ケーブルと共用した
特許請求の範囲第1項に記載の分離形アーク溶接
機。 3 前記切換手段は、前記電流信号の入力回路の
直列抵抗値を段階的に変化させる手段である特許
請求の範囲第1項に記載の分離形アーク溶接機。 4 前記切換手段は、前記電流信号の入力回路に
定電圧ダイオードを直列に接続する手段である特
許請求の範囲第1項に記載の分離形アーク溶接
機。[Claims] 1. In a separate arc welding machine that is separated into two or more parts and connected to each other by a cable, an output adjustment section that generates an analog voltage signal to one of the mutually connected parts; A voltage/current conversion circuit that converts the output voltage of the output adjustment section into a constant current signal corresponding to the voltage and outputs the same; and a voltage/current conversion circuit that receives the output voltage of the voltage/current conversion circuit and generates a digital signal corresponding to the input voltage. An output voltage detection circuit is provided, and effective impedance of a current/voltage conversion circuit for converting a current signal from the one part into a voltage signal and an input circuit for the current signal is transmitted to the other part corresponding to the one part. a switching means for changing the digital signal stepwise according to the digital signal to be output, and a pair of cables connects the two parts, and the analog signal is sent from the one part and the digital signal is sent from the other part. Separate type arc welding machine that transmits and receives at the same time using a common cable. 2. The separate arc welding machine according to claim 1, wherein one of the pair of cables is shared with a welding power cable or a control power supply cable. 3. The separate type arc welding machine according to claim 1, wherein the switching means is means for changing the series resistance value of the input circuit for the current signal in stages. 4. The separate type arc welding machine according to claim 1, wherein the switching means is means for connecting a constant voltage diode in series to the input circuit for the current signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18613984A JPS6163369A (en) | 1984-09-04 | 1984-09-04 | Separation type arc welding machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18613984A JPS6163369A (en) | 1984-09-04 | 1984-09-04 | Separation type arc welding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6163369A JPS6163369A (en) | 1986-04-01 |
JPH0573513B2 true JPH0573513B2 (en) | 1993-10-14 |
Family
ID=16183055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18613984A Granted JPS6163369A (en) | 1984-09-04 | 1984-09-04 | Separation type arc welding machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6163369A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104619449A (en) * | 2012-06-06 | 2015-05-13 | 伊利诺斯工具制品有限公司 | Welding device for remotely controlling welding power supply settings |
KR101855442B1 (en) * | 2017-12-28 | 2018-05-09 | 주식회사 차칵 | A method for determining forgeries of media files |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6325491U (en) * | 1986-07-31 | 1988-02-19 | ||
KR100548228B1 (en) * | 1998-12-28 | 2006-05-16 | 삼성중공업 주식회사 | Auto welder travel with crawler |
EP1555461B1 (en) | 2002-10-21 | 2011-11-16 | Nissan Diesel Motor Co., Ltd. | Controller for automatic speed changer |
CN102248255B (en) * | 2011-06-15 | 2013-09-18 | 太原市星云焊接设备有限公司 | Fully-digital multifunctional no-spatter inverse welding machine |
JP2015071178A (en) * | 2013-10-03 | 2015-04-16 | 株式会社ダイヘン | Wire feeding device and welding system |
JP6342274B2 (en) * | 2014-09-18 | 2018-06-13 | 株式会社ダイヘン | Welding system and welding system communication method |
-
1984
- 1984-09-04 JP JP18613984A patent/JPS6163369A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104619449A (en) * | 2012-06-06 | 2015-05-13 | 伊利诺斯工具制品有限公司 | Welding device for remotely controlling welding power supply settings |
KR101855442B1 (en) * | 2017-12-28 | 2018-05-09 | 주식회사 차칵 | A method for determining forgeries of media files |
Also Published As
Publication number | Publication date |
---|---|
JPS6163369A (en) | 1986-04-01 |
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