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    Power supply for short-circuiting arc welding and automatic welding machine utilizing the same
    1.
    发明公开
    Power supply for short-circuiting arc welding and automatic welding machine utilizing the same 有权
    短弧焊电源和自动焊接装置为此

    公开(公告)号：EP1410867A3

    公开(公告)日：2004-11-24

    申请号：EP03255852.0

    申请日：2003-09-18

    申请人： Daihen Corporation

    发明人： Ueyama, Tomoyuki ,  Uezono, Toshiro ,  Morimoto, Keiki

    IPC分类号： B23K9/10 ,  B23K9/09

    CPC分类号： B23K9/092

    摘要： A power supply for arc welding includes switching elements PTR, NTR for switching the polarity of the direct voltage from a power circuit PMC. The element PTR is connected in parallel to a series unit of a switching element TR1 and a resistor R1. Likewise, the element NTR is connected in parallel to a series unit of a switching element R2 and a resistor R2. A necking determination circuit ND determines whether a constriction occurs at the molten bridging portion between the welding wire and the base material. When the constriction occurs during the "electrode positive" mode, the switching element PTR is turned off, while the switching element TR1 is brought into the conduction state. When the constriction occurs during the "electrode negative" mode, the switching element NTR is turned off, while the switching element TR2 is brought into the conduction state.

    Power supply for short-circuiting arc welding and automatic welding machine utilizing the same
    2.
    发明公开
    Power supply for short-circuiting arc welding and automatic welding machine utilizing the same 有权
    用于短路电弧焊的电源和利用它的自动焊机

    公开(公告)号：EP1410867A2

    公开(公告)日：2004-04-21

    申请号：EP03255852.0

    申请日：2003-09-18

    申请人： Daihen Corporation

    发明人： Ueyama, Tomoyuki ,  Uezono, Toshiro ,  Morimoto, Keiki

    IPC分类号： B23K9/10

    CPC分类号： B23K9/092

    摘要： A power supply for arc welding includes switching elements PTR, NTR for switching the polarity of the direct voltage from a power circuit PMC. The element PTR is connected in parallel to a series unit of a switching element TR1 and a resistor R1. Likewise, the element NTR is connected in parallel to a series unit of a switching element R2 and a resistor R2. A necking determination circuit ND determines whether a constriction occurs at the molten bridging portion between the welding wire and the base material. When the constriction occurs during the "electrode positive" mode, the switching element PTR is turned off, while the switching element TR1 is brought into the conduction state. When the constriction occurs during the "electrode negative" mode, the switching element NTR is turned off, while the switching element TR2 is brought into the conduction state.

    摘要翻译： 用于电弧焊接的电源包括用于切换来自电源电路PMC的直流电压的极性的开关元件PTR，NTR。 元件PTR与开关元件TR1和电阻器R1的串联单元并联连接。 类似地，元件NTR并联连接到开关元件R2和电阻器R2的串联单元。 颈缩确定电路ND确定焊丝和基材之间的熔融桥接部分是否发生收缩。 当在“电极正极”模式期间发生收缩时，开关元件PTR截止，而开关元件TR1进入导通状态。 当在“电极负极”模式期间发生收缩时，开关元件NTR截止，而开关元件TR2进入导通状态。