METHOD OF MONITORING ENERGIZATION STATE OF WELDED PART AND CONTROL DEVICE OF RESISTANCE WELDER

To monitor the energization state of a welding current path in each energization section when welding is performed while energizing in an energization pattern having a plurality of energization sections with different current values.SOLUTION: When welding is performed in an energization pattern havi...

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Bibliographische Detailangaben
Hauptverfasser:	KIMOTO KEIICHIRO, FURUSE NOBUHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	To monitor the energization state of a welding current path in each energization section when welding is performed while energizing in an energization pattern having a plurality of energization sections with different current values.SOLUTION: When welding is performed in an energization pattern having a plurality of energization sections with different current values while controlling a pulse width, which is time for turning on a switching element of an inverter circuit 42, based on a current value output from the inverter circuit 42, the energization state of a welded part in each energization section is monitored based on parameters related to the pulse width.SELECTED DRAWING: Figure 1 【課題】電流値の異なる複数の通電区間を有する通電パターンで通電しながら溶接を行うにあたり、各通電区間における溶接電流経路の通電状態を監視する。【解決手段】インバータ回路４２から出力される電流値に基づいて、インバータ回路４２のスイッチング素子をオンにする時間であるパルス幅を制御しながら、電流値の異なる複数の通電区間を有する通電パターンで溶接を行うに際し、パルス幅に関するパラメータに基づいて、各通電区間における溶接部の通電状態を監視する。【選択図】図１