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11. 发明授权

US07166818B2 Tandem electrode welder and method of welding with two electrodes 失效
标题翻译：串联电极焊机和两电极焊接方法
公开(公告)号：US07166818B2
公开(公告)日：2007-01-23
申请号：US11218395
申请日：2004-09-29
申请人： Elliott K. Stava , Steven R. Peters
发明人： Elliott K. Stava , Steven R. Peters
IPC分类号： B23K9/09
CPC分类号： B23K9/092 , B23K9/1068 , B23K9/121 , B23K9/1735
摘要： An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding current at a first low frequency between the first electrode and the two plates, a second power supply for passing a second welding current at a second low frequency between the second electrode and the two plates, where each of the power supplies includes a three phase voltage input operated at line frequency, a rectifier to convert the input voltage to a DC voltage link and a high frequency switching type inverter converting the DC voltage link to a high frequency AC current, an output rectifier circuit to provide a positive voltage terminal and a negative voltage terminal, and an output switching network operated at a given low frequency for directing a pulsating welding current at the given low frequency from the two terminals across one of the electrodes and the plates, and a circuit for independently adjusting the given low frequency so the value of the first low frequency of the first power supply is different from the second low frequency of the second power supply.
摘要翻译：一种电弧焊接装置，包括至少第一消耗电极和第二可消耗电极，所述第一消耗电极和第二可消耗电极沿着两个相邻的相互接地的板的边缘之间的焊接路径一体移动;第一电源，用于使第一低电压的第一焊接电流在第一电极和两个板之间的第二电源，用于在第二电极和两个板之间以第二低频通过第二焊接电流，其中每个电源包括以线路频率操作的三相电压输入，将输入电压转换为直流电压链路的整流器和将直流电压链路转换为高频交流电流的高频开关型逆变器，提供正电压端子和负电压端子的输出整流电路，以及输出在给定的低频下操作的开关网络用于从两个三极管引导以给定低频率的脉动焊接电流电极和板之间的微型电极，以及用于独立地调节给定低频率的电路，使得第一电源的第一低频值不同于第二电源的第二低频。

12. 发明授权

US06600134B2 Power supply for electric arc welding 有权
公开(公告)号：US06600134B2
公开(公告)日：2003-07-29
申请号：US10059807
申请日：2002-01-31
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K909
CPC分类号： B23K9/1075 , B23K9/1062
摘要： A power supply connectable to a source of AC line voltage for AC electric arc welding by an AC arc current across a welding gap between an electrode and a workpiece, the power supply comprises a high capacity transformer that converts said line voltage to an AC output voltage, and a rectifier that converts the AC output voltage to a DC voltage between a positive terminal and a common terminal at generally zero volts and a negative terminal and the common terminal. The power supply has a first switch that connects the positive terminal to the common terminal across the gap when a gate signal is applied to the first switch, a second switch for connecting the negative terminal to the common terminal across the gap when a gate signal is applied to the second switch and a pulse width modulator operated for generating pulses at a frequency of at least about 18 kHz. A logic network has a first circuit for directing the pulses to the first switch for a first time, a second circuit for directing the pulses to the second switch for a second time and a controller to alternately operate first and second circuits to create AC arc welding current.

13. 发明授权

US06291798B1 Electric ARC welder with a plurality of power supplies 失效
标题翻译：电弧焊机具有多个电源
公开(公告)号：US06291798B1
公开(公告)日：2001-09-18
申请号：US09406406
申请日：1999-09-27
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K910
CPC分类号： B23K9/1006 , B23K9/1056 , B23K9/1068 , B23K9/1075
摘要： An electric arc welder comprising a plurality of power supplies connected to a single welding station with a D.C. input for passing an arc welding current across an electrode and workpiece, each of the power supplies including a switching type inverter with an output D.C. current determined by a signal applied to the input of the power supply, a circuit connecting the output D.C. currents in parallel at the input of the welding station, a feedback circuit including a sensor for creating a current signal representing the arc current, a command signal source, and a circuit for creating a master current signal based upon the sensed current signal and the command signal, and a circuit for applying said master current signal to the input of the plurality of power supplies whereby the D.C. current to the D.C. input of the welding station is equally shared by the power supplies.
摘要翻译：一种电弧焊机，包括连接到单个焊接站的多个电源，具有用于使电弧焊接电流穿过电极和工件的DC输入，每个电源包括具有由施加到电源的输入的信号，在焊接站的输入处并联连接输出DC电流的电路，包括用于产生表示电弧电流的电流信号的传感器的反馈电路，命令信号源和基于感测到的电流信号和命令信号产生主电流信号的电路，以及用于将所述主电流信号施加到多个电源的输入的电路，由此到焊接站的直流输入的直流电流相等由电源共享。

14. 发明授权

US06274845B1 Method and apparatus for electric arc welding 失效
标题翻译：电弧焊接方法及装置
公开(公告)号：US06274845B1
公开(公告)日：2001-08-14
申请号：US09685824
申请日：2000-10-11
申请人： Elliott K. Stava , Christopher Hsu , Peter Nicholson
发明人： Elliott K. Stava , Christopher Hsu , Peter Nicholson
IPC分类号： B23K9095
CPC分类号： B23K9/0735 , B23K9/0216 , B23K9/1056 , B23K9/1276
摘要： An electric arc welding apparatus for depositing molten metal from an advancing welding wire into a weld puddle in an open root between two juxtapositioned plates where the root extends in a welding path and is formed by converging walls terminating in generally parallel walls spaced to define a gap, which apparatus comprises a contact holder with a wire outlet, a switching power supply directing welding current to the wire as the wire passes from the outlet toward the open root, with the advancing wire defining an electrode stick out between the contact holder and the weld puddle, a circuit for sensing the length of the stick out, and control means for adjusting the welding current as a function of the sensed stick out length.
摘要翻译：一种电弧焊接装置，用于将熔融金属从前进的焊丝沉积到两个并置板之间的开放根部中的焊接熔池中，其中根部在焊接路径中延伸并且通过会聚壁形成，所述壁终止于大致平行的壁，间隔开以限定间隙该设备包括具有电线出口的接触保持器，当电线从出口朝向开放根部时将引导焊接电流引导到电线的开关电源，其中前进线限定了电极伸出触点支架和焊缝之间水池，用于感测伸出长度的电路，以及用于根据所感测的伸出长度调整焊接电流的控制装置。

15. 发明授权

US06111216A High current welding power supply 有权
标题翻译：大电流焊接电源
公开(公告)号：US06111216A
公开(公告)日：2000-08-29
申请号：US233235
申请日：1999-01-19
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K9/073 , B23K9/06 , B23K9/09 , B23K9/10
CPC分类号： B23K9/1062 , B23K9/091 , B23K9/1043
摘要： In a welding power supply for creating welding current in a succession of current pulses with a maximum current level and a trailing off state which current pulses passing through a series circuit including an inductor and electrode in welding relationship with a workpiece wherein the power supply has (a) an inverter stage with an input to be connected to a power source, a first terminal at a first electrical polarity when the inverter is on, a second terminal at a second electrical polarity when the inverter is on, and a control to generate an off signal to turn the inverter off and remove current from the terminals to shift said current pulse toward an off state; and, (b) a power switching stage including a transistor based switch having a conduction condition passing current from the first terminal upon creation of a first logic signal and a non-conduction condition blocking current upon creation of a second logic signal, the improvement comprising: a sensor for measuring the instantaneous value of the welding current, a comparator for producing a low current signal when the instantaneous current is at a selected value substantially below the maximum current level and a circuit or program for creating the second logic signal upon production of a low current signal after generation of an off signal whereby the transistor based switch is switched from the conduction condition to the non-conduction condition when the welding current is generally at the selected value.
摘要翻译：一种焊接电源，用于在具有最大电流电平和拖尾关断状态的一系列电流脉冲中产生焊接电流，电流脉冲通过包括电感器和电极的串联电路与工件处于焊接关系，其中电源具有 a）具有要连接到电源的输入端的逆变器级，当所述逆变器接通时具有第一电极性的第一端子，当所述逆变器接通时具有第二电极性的第二端子，以及用于产生关闭信号以关闭逆变器，并且从端子移除电流以将所述电流脉冲移向关闭状态; 以及（b）功率开关级，包括基于晶体管的开关，当产生第二逻辑信号时，产生第一逻辑信号和非导通状态阻断电流，导通条件从第一端子通过电流，该改进包括：用于测量焊接电流的瞬时值的传感器，当瞬时电流处于基本上低于最大电流电平的选定值时产生低电流信号的比较器，以及用于在产生第二逻辑信号时产生第二逻辑信号的电路或程序在产生关闭信号之后的低电流信号，从而当焊接电流通常为选定值时，基于晶体管的开关从导通状态切换到非导通状态。

16. 发明授权

US5148001A System and method of short circuiting arc welding 失效
标题翻译：短路电弧焊接系统及方法
公开(公告)号：US5148001A
公开(公告)日：1992-09-15
申请号：US577105
申请日：1990-09-04
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K9/073 , B23K9/09 , B23K9/10 , B23K9/12 , E21B47/00 , E21B47/08 , G01V1/46
CPC分类号： B23K9/092 , B23K9/0732 , B23K9/1043 , B23K9/125 , G01V1/46
摘要： There is provided an improvement in a short circuiting arc welding system comprising a work station with a consumable electrode and workpiece, a D.C. power supply with a positive and a negative terminal, high frequency current control means for applying a welding circuit with a given time-based profile across the work station while the electrode is short circuited and while the electrode is spaced from the workpiece, a welding current circuit means including a first means for creating a first inductive reactance in series with the current control means and work station whereby the welding current follows the time-based profile in accordance with the first inductive reactance. The improvement comprises a background current circuit means between the power supply and the work station and in parallel with the current control means and first means for applying continuously a background current across the work station. This background current circuit means includes a second means for creating a second inductive reactance substantially greater than the first inductive reactance and a resistor means for controlling the background current flowing continuously from the power supply to the work station through the background current circuit means.
摘要翻译：提供了一种短路电弧焊接系统的改进，该短路电弧焊接系统包括具有消耗电极和工件的工作站，具有正极和负极端子的直流电源，用于施加具有给定时间的焊接电路的焊接电路的高频电流控制装置，在电极短路的同时，当电极与工件间隔开时，焊接电流电路装置包括用于产生与电流控制装置和工作站串联的第一感抗的第一装置，由此焊接电流按照第一感抗跟随时基轮廓。该改进包括电源和工作站之间的背景电流电路装置，并且与电流控制装置和第一装置连续地施加跨工作站的背景电流。该背景电流电路装置包括用于产生基本上大于第一感抗的第二感抗的第二装置和用于控制通过背景电流电路装置从电源连续工作到工作站的背景电流的电阻装置。

17. 发明授权

US4717807A Method and device for controlling a short circuiting type welding system 失效
标题翻译：用于控制短路型焊接系统的方法和装置
公开(公告)号：US4717807A
公开(公告)日：1988-01-05
申请号：US940580
申请日：1986-12-11
申请人： John M. Parks , Elliott K. Stava
发明人： John M. Parks , Elliott K. Stava
IPC分类号： B23K9/073 , B23K9/06 , B23K9/09
CPC分类号： B23K9/091
摘要： A method and device for controlling a power supply for arc welding in a manner to reduce spatter when the power supply is employed for depositing metal from a welding wire or electrode onto a workpiece by the short circuiting transfer mode wherein a welding current causes the welding wire to alternate between a short circuit condition and an arc condition with metal transfer occurring during a short circuit condition. This method and device includes the concept of shifting the welding current to a background current value in response to a short circuit condition, holding the welding current generally at the background current level for a preselected time, then allowing the welding current to reach the normal unimpeded current level, and causing the holding step to be terminated before the selected time in response to a detected arc condition. This concept provides a predetermined low current condition immediately upon establishing a short circuit between the welding wire or electrode and the workpiece, which low current condition is retained long enough to convert what otherwise would be a spatter-laden momentary short circuit to a short circuit where metal is transferred to the workpiece. Further, the method and device detects the slope of the welding current or voltage and shifts the welding current to the low background current level when the welding current reaches its maximum value just before breakage of the metal from the wire thus reducing the spatter energy when the molten metal breaks from the wire.

18. 发明授权

US07968822B2 Arc welding system 有权
标题翻译：电弧焊系统
公开(公告)号：US07968822B2
公开(公告)日：2011-06-28
申请号：US11090576
申请日：2005-03-28
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K9/10 , H05B37/02 , G05F5/00 , H02M3/335
CPC分类号： B23K9/091 , B23K9/0956
摘要： An electric arc welding system including a power lead for providing welding current between an advancing welding wire and a workpiece, a short circuit sensor having a short circuit output signal when the electrode is shorted with the workpiece and a premonition sensor having a fuse output signal when a short circuit is about to break. This welding system has at least two power source modules, each with a common isolated DC input and an output connected to the power lead with each of the modules controlled to perform a short circuit arc welding process. The individual module comprises a regulated DC to DC converter having a DC output signal with a waveform controlled by a waveform signal from a controller and an output switch receiving the DC output signal and in series with the power lead where the output switch is opened by a gate signal to reduce the welding current in the power lead.
摘要翻译：一种电弧焊接系统，包括用于在前进焊丝和工件之间提供焊接电流的电源线，当电极与工件短路时具有短路输出信号的短路传感器和具有熔丝输出信号的预感测器，短路即将中断。该焊接系统具有至少两个电源模块，每个电源模块具有公共隔离DC输入和连接到电源线的输出，每个模块被控制以执行短路电弧焊接过程。单个模块包括具有DC输出信号的调节DC-DC转换器，该DC输出信号具有由来自控制器的波形信号控制的波形和接收DC输出信号的输出开关，并与输出开关与电源线串联，其中输出开关由门信号，以减少电源线中的焊接电流。

19. 发明授权

US07109439B2 Short circuit arc welder and method of controlling same 有权
标题翻译：短路电弧焊机及其控制方法
公开(公告)号：US07109439B2
公开(公告)日：2006-09-19
申请号：US10783115
申请日：2004-02-23
申请人： Elliott K. Stava
发明人： Elliott K. Stava
IPC分类号： B23K9/09
CPC分类号： B23K9/093
摘要： An electric arc welder operated to perform a short circuit welding process between an electrode and a workpiece, where the process comprises a succession of alternate short circuit conditions and arc conditions, with a first current waveform during the short circuit condition and a second voltage waveform during the arc condition. A first waveform generator constructs the first waveform from a series of current pulses controlled by a pulse wave modulator operated at a rate greater than 18 kHz and a second waveform generator constructs the second waveform from a series of current pulses controlled by a pulse wave modulator operated at a rate greater than 18 kHz. The second waveform generator has a circuit to generate the second waveform with a generally constant arc parameter, generally voltage.
摘要翻译：电弧焊机操作以在电极和工件之间进行短路焊接工艺，其中该工艺包括一系列交替的短路条件和电弧条件，其中在短路状态期间具有第一电流波形和在第二电压波形期间电弧状况。第一波形发生器从由大于18kHz的速率操作的脉冲波调制器控制的一系列电流脉冲构成第一波形，第二波形发生器从由脉冲波调制器控制的一系列电流脉冲构成第二波形以大于18kHz的速率。第二波形发生器具有用于产生具有大致恒定的电弧参数（通常为电压）的第二波形的电路。

20. 发明授权

US07105777B2 Dedicated wire feed speed control 失效
标题翻译：专用送丝速度控制
公开(公告)号：US07105777B2
公开(公告)日：2006-09-12
申请号：US10765518
申请日：2004-01-27
申请人： Elliott K. Stava , James P. Zucker
发明人： Elliott K. Stava , James P. Zucker
IPC分类号： B23K9/10
CPC分类号： B23K9/0953 , B23K9/1062 , B23K9/125 , B23K9/133
摘要： A MIG welder and method of controlling a MIG welder which includes a wire speed selector that is used to generate a control signal which controls both the wire feed speed of a consumable electrode and the output current level of the power supply.
摘要翻译：一种MIG焊机和MIG焊机的控制方法，其包括用于产生控制消耗电极的送丝速度和电源的输出电流水平的控制信号的线速选择器。

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