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1. 发明授权

US6037566A Arc welding apparatus for constant current and voltage characteristics cost and weight of which being reduced 失效
标题翻译：用于恒定电流和电压特性的电弧焊接装置的成本和重量减少
公开(公告)号：US6037566A
公开(公告)日：2000-03-14
申请号：US115673
申请日：1998-07-15
申请人： Yoshimichi Yasuhara , Masafumi Naruto , Masayuki Okubo
发明人： Yoshimichi Yasuhara , Masafumi Naruto , Masayuki Okubo
IPC分类号： B23K9/16 , B23K9/073 , B23K9/10
CPC分类号： B23K9/1043
摘要： An arc welding apparatus having output terminals of a constant current characteristic and a constant voltage characteristic is simply provided at low cost with a reactor appropriate for both the characteristics. A current control circuit 2 controls a secondary output current of a welding transformer 1 by means of a current control device, while a first reactor 3 and a second reactor 4 are constructed so that magnetic flux formed by a first winding 3a and magnetic flux formed by a second winding 4a, which are wound around an annular iron core 7, overlap each other. The other terminal of the first reactor 3 is connected to a constant current characteristic output terminal 8, while the other terminal of the second reactor 4 is connected to a welding base metal use output terminal 10. A constant voltage characteristic output terminal 9 and one terminal of the first reactor 3 are connected to the positive side of the current control circuit 2, while one terminal of the second reactor 4 is connected to the negative side of the current control circuit 2.
摘要翻译：具有恒定电流特性和恒定电压特性的输出端子的电弧焊接装置通过适合两种特性的电抗器以低成本简单地提供。电流控制电路2通过电流控制装置来控制焊接变压器1的二次输出电流，而第一反应器3和第二反应器4被构造成使得由第一绕组3a形成的磁通和由围绕环形铁芯7缠绕的第二绕组4a彼此重叠。第一电抗器3的另一个端子连接到恒流特性输出端子8，而第二电抗器4的另一个端子连接到焊接母材使用输出端子10.恒压特性输出端子9和一个端子第一电抗器3的一个端子连接到电流控制电路2的正极侧，而第二电抗器4的一个端子连接到电流控制电路2的负极侧。

2. 发明授权

US6127650A Electromagnetic switch and welder using the same 有权
标题翻译：电磁开关和焊机使用相同
公开(公告)号：US6127650A
公开(公告)日：2000-10-03
申请号：US196224
申请日：1998-11-20
申请人： Masafumi Naruto , Yoshimichi Yasuhara , Masayuki Okubo
发明人： Masafumi Naruto , Yoshimichi Yasuhara , Masayuki Okubo
IPC分类号： B23K9/10
CPC分类号： B23K9/1043
摘要： A welder has an electromagnetic switch for turning on and off the power to be supplied to the welder, a control circuit for controlling the turn on and off of this switch according to a starter signal that starts the welder and self-holding circuit for self-holding the switch. This self-holding circuit releases the switch from the self-holding when a voltage of the control circuit lowers to not more than a turn-on voltage of the switch. Therefore, when an applied voltage decreases too low to maintain the turn-on status, the switch is released from its self-holding. A voltage can thus never be applied again to the control circuit unless the starter signal is once turned off. As a result, a coil of the switch is completely free from being burnt out. Also current can be cut off when a temperature of the coil of the switch rises to not less than a given value. Therefore, if an abnormal temperature of the coil is sensed, the coil current is cut off. As a result, the coil of the switch is completely free from being burnt out.
摘要翻译：焊机具有用于接通和断开供应给焊接机的电力的电磁开关，用于根据起动信号控制该开关的接通和关断的控制电路，起动信号启动焊接机和自保持电路，握住开关当控制电路的电压降至不超过开关的接通电压时，该自保持电路将开关从自保持状态释放。因此，当施加的电压降低太低以维持接通状态时，开关从其自保持释放。因此，除非起动信号一旦被关闭，否则电压可以再次不被施加到控制电路。结果，开关的线圈完全没有被烧毁。当开关线圈的温度上升到不小于给定值时，电流也可以被切断。因此，如果检测到线圈的异常温度，则切断线圈电流。结果，开关的线圈完全没有被烧毁。

3. 发明授权

US6028290A Arc welding apparatus 有权
标题翻译：电弧焊机
公开(公告)号：US6028290A
公开(公告)日：2000-02-22
申请号：US129430
申请日：1998-08-05
申请人： Yoshimichi Yasuhara , Masafumi Naruto , Masayuki Okubo
发明人： Yoshimichi Yasuhara , Masafumi Naruto , Masayuki Okubo
IPC分类号： B23K9/10
CPC分类号： B23K9/1043
摘要： An arc welding apparatus is constructed of: a welding transformer 1, wherein a first tap T1 is provided at a point of half N/2 of the total number of turns N of the secondary winding of the transformer 1, the first tap T1 is connected to the electrification section 9 of a manual welding holder 8, a second tap T2 is provided at a point of N1 turns from the start Ts of the secondary winding, the second tap T2 is connected to a second thyristor 3, a first thyristor 2 and a third thyristor 4 are connected across both ends of the secondary winding, a third tap T3 is provided at a point of half N1/2 of N1 turns of the secondary winding and the third tap T3 is connected to a CO.sub.2 arc welding torch 10; a control circuit 6 for controlling these thyristors 2-4, a gate signal switchover circuit 5 for executing switchover between gate signals of the thyristors 2-4; and a reactor 7 for smoothing a welding current. The arc welding apparatus executes switchover between manual welding and CO.sub.2 welding by means of thyristors, thereby manufacturing the apparatus at low cost and achieving improved reliability.
摘要翻译：电弧焊接装置由以下部分构成：焊接变压器1，其中在变压器1的次级绕组的总匝数N的一半N / 2点设置第一抽头T1，第一抽头T1被连接在手动焊接保持器8的带电部9中，在从次级绕组的起始Ts开始的N1匝处设置第二抽头T2，第二抽头T2连接到第二晶闸管3，第一晶闸管2和在次级绕组的两端连接第三晶闸管4，在次级绕组的N1匝的半数N1 / 2的点设置第三抽头T3，将第三抽头T3连接到二氧化碳弧焊炬10; 用于控制这些晶闸管2-4的控制电路6，用于执行晶闸管2-4的栅极信号之间切换的栅极信号切换电路5; 以及用于平滑焊接电流的电抗器7。电弧焊接装置通过晶闸管执行手动焊接和二氧化碳焊接之间的切换，从而以低成本制造该装置并提高可靠性。

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