JPH02144279U

JPH02144279U -

Info

Publication number: JPH02144279U
Application number: JP4910089U
Authority: JP
Priority date: 1989-04-25
Filing date: 1989-04-25
Publication date: 1990-12-06

Description

[Brief explanation of drawings]

第１図は、本考案の一実施例による抵抗溶接シ
ステムの回路構成を示すブロツク図、第２図は、
第１図の切換制御回路の各部の信号の波形を示す
タイミング図、第３図は、切換制御回路の変形例
の回路構成を示すブロツク図、および、第４図は
、第３図の切換制御回路の各部の信号の波形を示
すタイミング図である。１０……インバータ電源回路、ＣＨ０〜ＣＨ２
……切換回路、ＰＭ０〜ＰＭ２……点弧回路、Ｗ
Ｔ０〜ＷＴ２……溶接トランス、ＨＥ０〜ＨＥ２
……溶接ヘツド、１２……切換制御回路、１６，
１８……モノマルチ、２０……リングカウンタ、
３４……シーケンサ回路。 FIG. 1 is a block diagram showing the circuit configuration of a resistance welding system according to an embodiment of the present invention, and FIG.
FIG. 1 is a timing diagram showing signal waveforms of each part of the switching control circuit, FIG. 3 is a block diagram showing a circuit configuration of a modified example of the switching control circuit, and FIG. 4 is a switching control circuit shown in FIG. 3. FIG. 3 is a timing diagram showing waveforms of signals in each part of the circuit. 10...Inverter power supply circuit, CH0 to CH2
...Switching circuit, PM0 to PM2...Ignition circuit, W
T0~WT2...Welding transformer, HE0~HE2
...Welding head, 12...Switching control circuit, 16,
18...Mono multi, 20...Ring counter,
34...Sequencer circuit.

Claims

[Scope of utility model registration request]

A welding head is connected to the secondary side of each of the plurality of welding transformers, and an output terminal of one welding power source is connected to the primary side of each of the plurality of welding transformers via a switching means. 1. A resistance welding system comprising a switching control means for controlling said switching means to selectively switch a welding transformer inputting a primary current from a welding transformer.