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    • 1. 发明专利
    • FUENTE DE ENERGIA MODULAR PARA SOLDADURAS DE ARCO ELECTRICO Y DESCRESTADORA DE SALIDA.
    • MXPA06001461A
    • 2006-09-20
    • MXPA06001461
    • 2006-02-07
    • LINCOLN GLOBAL INC
    • LUO LIFENG
    • B23K9/09B23K09/09
    • Una fuente de energia de tres etapas para un proceso de soldadura con arco electrico, caracterizado porque comprende una etapa de alimentacion que tiene una alimentacion CA y una primera senal de salida CD; una segunda etapa en la forma de un convertidor CD a CD no regulado que tiene una alimentacion conectada a la primera senal de salida CD, una red de conmutadores conmutados a alta frecuencia con un ciclo de servicio determinado para convertir la alimentacion en una primera senal CA interna, un transformador de aislamiento con un devanado primario desplazado por la primera senal CA de alta frecuencia interna y un devanado secundario para crear una segunda senal CA de alta frecuencia interna y un rectificador para convertir la segunda senal CA interna en una segunda senal de salida CD de la segunda etapa; con una magnitud relacionada al ciclo de servicio de los conmutadores y una tercera etapa para convertir la segunda senal de salida CD a una salida de soldadura para soldar en donde la etapa de alimentacion y la segunda etapa se ensamblan en un primer modulo y la tercera etapa se ensambla en un segundo modulo que se conecta al primer modulo.
    • 4. 发明申请
    • IMPROVED POWER SOURCE FOR METAL TRANSFER PROCESSES
    • 改进金属转移过程的电源
    • WO1981001383A1
    • 1981-05-28
    • PCT/AU1980000088
    • 1980-11-14
    • WELDING IND OF AUSTRALIABROUGHAM WCHEESMAN G
    • WELDING IND OF AUSTRALIA
    • B23K09/09
    • B23K9/091
    • A power source for an electric arc metal transfer process, such as arc welding, including a transformer (T1) for providing a pulsed current source (S1, S3, B1) and a background current source (S4, S5, S6, B2) for maintaining the arc between current pulses, said power source including control circuitry (P1, C0) for independently varying the amplitude of the current pulses (P1), the level of the background current (S4, S5, S6), the frequency of the current pulses (Fs) and the amount of each current pulse supplied to the arc (Ph, Fs, Cd, SCR1 SCR2), The amplitude of the current pulses and the level of the background current are preferably varied by tapping and switching the primary windings (P1, P2, P3) and the background current secondary windings (S4, S5, S6). The frequency of the current pulses is varied by means of a frequency selection circuit (Fs) which allows suitable variation of the frequency depending on the metal to be transferred. Control of each current pulse is achieved in the preferred embodiment by means of silicon control rectifiers (SCR1, SCR2), the conduction angles of which are controlled by means of a phase shifting circuit (Ph).
    • 一种用于电弧金属转移工艺的电源,例如电弧焊,包括用于提供脉冲电流源(S1,S3,B1)和背景电流源(S4,S5,S6,B2)的变压器(T1),用于 保持电流脉冲之间的电弧,所述电源包括用于独立地改变电流脉冲(P1)的幅度的控制电路(P1,C0),背景电流(S4,S5,S6)的电平,电流的频率 脉冲(Fs)和提供给电弧(Ph,Fs,Cd,SCR1 SCR2)的每个电流脉冲的量,电流脉冲的幅度和背景电流的电平优选地通过对初级绕组 P1,P2,P3)和背景电流次级绕组(S4,S5,S6)。 通过频率选择电路(Fs)来改变电流脉冲的频率,该频率选择电路允许根据要传送的金属适当地改变频率。 在优选实施例中,通过硅控制整流器(SCR1,SCR2)实现每个电流脉冲的控制,其通过移相电路(Ph)控制其导通角。
    • 5. 发明申请
    • PULSE WELDING APPARATUS
    • 脉冲焊接设备
    • WO1990009858A1
    • 1990-09-07
    • PCT/JP1990000247
    • 1990-02-27
    • MITSUBISHI DENKI KABUSHIKI KAISHATABATA, YoichiroUEGURI, ShigeoUEDA, YoshihiroMIZUNO, Masanori;KATOU, Yoshiaki;NAGANO, Osamu;
    • MITSUBISHI DENKI KABUSHIKI KAISHA
    • B23K09/09
    • G05F1/08B23K9/093
    • A pulse welding apparatus such as of arc welding or short-circuiting arc welding that effects the welding utilizing pulse discharge that develops at the tip of a wire electrode, wherein undercut which is a defect in the shape of welding beads develops which deteriorates the welding when the timing for removing the molten mass grown at the tip of the wire electrode is delayed due to a change in the welding condition or disturbance. To eliminate this defect, the pulse current fed to the material to be welded is divided into a plurality of pulse groups, the pulse groups are allowed to have an average current of a maximum peak after a predetermined period of time has passed from the start of the pulse, the pulse current groups are allowed to have a mountain shape in compliance with the removing phenomenon of the molten mass, and pulse period, pulse width and pulse gap of pulse current groups are differed depending upon the wire feed speed or the pulse group period. In the short-circuiting arc welding method, furthermore, the short-circuiting and arcing periods are instantaneously controlled depending on the detected arc length or the wire feed speed to quickly obtain ideal arc length. By so doing, the molten mass can be regularly removed and moved onto the material to be welded. Even in the short-circuiting arc welding, furthermore, variation decreases between the short-circuiting period and the arcing period. Therefore, growth and removal of the molten mass can be controlled independently of the magnetic blow phenomenon of arc, and favorable welding is carried out to improve the quality irrespective of a change in the shape of welding joint and earth point in real arc.
    • 诸如电弧焊或短路电弧焊的脉冲焊接装置,其利用在线电极的尖端处产生的脉冲放电进行焊接,其中形成焊接珠形状的缺陷的底切,这导致焊接劣化 由于焊接条件或干扰的变化,用于去除在线电极的尖端生长的熔融质量的时间被延迟。 为了消除该缺陷,馈送到待焊接材料的脉冲电流被分成多个脉冲组,脉冲组允许在从一开始就经过预定时间段之后具有最大峰值的平均电流 脉冲电流组允许符合熔融物质的去除现象的山形,并且脉冲电流组的脉冲周期,脉冲宽度和脉冲间隙根据送丝速度或脉冲组而不同 期。 此外,在短路电弧焊接方法中,根据检测出的电弧长度或送丝速度瞬时控制短路和电弧时间,以快速获得理想的电弧长度。 通过这样做,熔融物质可以被定期地移除并移动到待焊接的材料上。 此外,即使在短路电弧焊接中,短路时间段与电弧周期的变化也减小。 因此,可以独立于电弧的磁冲现象来控制熔融体的生长和去除,并且进行良好的焊接以提高质量,而与实际电弧中的焊接接头和接地点的形状的变化无关。
    • 6. 发明申请
    • PULSE WELDING APPARATUS
    • 脉冲焊接设备
    • WO1991001842A1
    • 1991-02-21
    • PCT/JP1990000246
    • 1990-02-27
    • MITSUBISHI DENKI KABUSHIKI KAISHATABATA, YoichiroUEGURI, ShigeoUEDA, YoshihiroMIZUNO, Masanori;KATOU, Yoshiaki;NAGANO, Osamu;
    • MITSUBISHI DENKI KABUSHIKI KAISHA
    • B23K09/09
    • B23K9/1062B23K9/0734B23K9/092B23K9/0953G05F1/08
    • A pulse welding apparatus such as a pulse arc welding apparatus or a short-circuiting arc welding apparatus utilizing pulse discharge, wherein there is provided a pulse current waveform control circuit which feeds a desired pulse arc current to the arc welding power source that supplies pulse arc current to the welding load unit, the circuit being so designed as to effect optimum welding without adjusting or changing the circuit components. Even under various welding conditions or environments, furthermore, it is allowed to prevent defective welding during the arc welding caused by the magnetic blow phenomenon and to prevent defective welding such as undercut or sputtering caused by disturbances in the welding torch. The pulse current waveform control circuit is realized as a microcomputerized digital circuit, and the pulse arc current is controlled by the control operation of a program, in order to realize a desired current control by changing the program but without changing the circuit. By utilizing the memory, furthermore, the optimum welding current waveform parameter or a desired arc length signal is learned during the first welding, and the arc length feedback control or the current waveform control is effected during the second welding using a program prepared with the thus learned welding current waveform parameter or the desired arc length signal as a reference. Thus, the molten mass is prevented from being erroneously removed by the magnetic blow phenomenon, and a change in the arc length is suppressed that is caused by disturbance in the welding torch, contributing to improving the welding quality under various welding environments.
    • 7. 发明申请
    • PULSE WELDING APPARATUS
    • 脉冲焊接设备
    • WO1990009856A1
    • 1990-09-07
    • PCT/JP1990000244
    • 1990-02-27
    • MITSUBISHI DENKI KABUSHIKI KAISHAMIZUNO, Masanori;KATOU, Yoshiaki;NAGANO, Osamu;TABATA, YoichiroUEGURI, ShigeoUEDA, Yoshihiro
    • MITSUBISHI DENKI KABUSHIKI KAISHA
    • B23K09/09
    • B23K9/092
    • In a pulse welding apparatus such as a pulse arc welding apparatus or a short-circuiting arc welding apparatus utilizing pulse discharge, development of welding defect in the welded beads is eliminated that results from irregular timing for removing molten mass caused by magnetic blow phenomenon of arc due to difference in the shape of welding joint or due to difference in the earth point. A pulse current supplied to a material to be welded is divided into groups of pulses. Gaps among the pulses in the pulse current groups, base current period supplied between the pulse current groups, base current, pulse peak and pulse width of the pulses, and, in the case of the short-circuiting arc welding, the short-circuiting period and arcing period, are instantaneously controlled depending on the arc length that is detected in order to instantaneously obtain ideal arc length. By doing so, the molten mass can be regularly removed and moved onto the material to be welded. Even in the short-circuiting arc welding, furthermore, variation decreases between the short-circuiting period and the arcing period. Therefore, growth and removal of the molten mass can be controlled independently of the magnetic blow phenomenon of arc, and favorable welding is carried out to improve the quality irrespective of a change in the shape of welding joint and earth point in real arc.
    • 在使用脉冲放电的脉冲焊接装置或短路电弧焊接装置等的脉冲焊接装置中,消除了焊接珠的焊接缺陷的发展,这是由于由电弧的电磁现象引起的熔融物质的不规则定时 由于焊接接头的形状不同或由于接地点的差异。 供给待焊接材料的脉冲电流被分成脉冲组。 脉冲电流组中的脉冲之间的间隙,脉冲电流组之间提供的基极电流周期,基极电流,脉冲峰值和脉冲的脉冲宽度,以及在短路电弧焊接的情况下,短路周期 和电弧时间根据所检测的电弧长度立即控制,以瞬时获得理想的电弧长度。 通过这样做,熔融物质可以被规则地去除并移动到待焊接的材料上。 此外,即使在短路电弧焊接中,短路时间段与电弧周期的变化也减小。 因此,可以独立于电弧的磁冲现象来控制熔融体的生长和去除,并且进行良好的焊接以提高质量,而与实际电弧中的焊接接头和接地点的形状的变化无关。
    • 9. 发明申请
    • PULSE WELDING APPARATUS
    • 脉冲焊接设备
    • WO1990009857A1
    • 1990-09-07
    • PCT/JP1990000245
    • 1990-02-27
    • MITSUBISHI DENKI KABUSHIKI KAISHATABATA, YoichiroUEGURI, ShigeoUEDA, YoshihiroMIZUNO, Masanori;KATOU, Yoshiaki;NAGANO, Osamu;
    • MITSUBISHI DENKI KABUSHIKI KAISHA
    • B23K09/09
    • B23K9/0732B23K9/0735B23K9/092
    • In a pulse welding apparatus which effects the arc welding or the short-circuiting arc welding utilizing pulse discharge that generates at the tip of the wire electrode, the contact position becomes irregular in the torch chip of wire electrode due to bend in the wire electrode and the arc length changes instantaneously between the tip of the wire electrode and the material to be welded, causing the molten mass to be removed irregularly. In order to detect instantaneous change in the arc length, therefore, the arc voltage and arc current are detected between the wire electrode and the material to be welded, the detected arc voltage is converted into a reference arc voltage change and is then compared with the above detected arc voltage, to calculate a true arc length that changes from time to time. There are further set a mimic arc length signal and a mimic welding current reference waveform whose levels change depending upon the welding steps, the mimic arc length signal is compared with the calculated arc length signal, and the mimic welding current reference waveform is corrected depending upon a difference in the signals to produce a welding current waveform which is then instantaneously controlled depending on the detected arc length or the wire feed speed to quickly obtain an ideal arc length. In the welding steps, furthermore, the wire electrode performs stable welding maintaining the mimic arc length.
    • 在利用在线电极的尖端产生的脉冲放电的电弧焊接或短路电弧焊接的脉冲焊接装置中,由于线电极的弯曲,线电极的焊炬芯片的接触位置变得不规则, 电弧长度在线电极的尖端和被焊接材料之间瞬间变化,导致熔融体不规则地去除。 因此,为了检测电弧长度的瞬时变化,在线电极和待焊接材料之间检测电弧电压和电弧电流,将检测到的电弧电压转换为参考电弧电压变化,然后与 检测到电弧电压,计算出不时变化的真弧长度。 进一步设置模拟弧长信号和模拟焊接电流参考波形,其电平根据焊接步骤而变化,将模拟弧长信号与计算出的电弧长度信号进行比较,并且模拟焊接电流参考波形根据 产生焊接电流波形的信号的差异,该焊接电流波形根据检测到的电弧长度或送丝速度瞬时控制,以快速获得理想的电弧长度。 此外,在焊接步骤中,线电极保持模拟弧长度的稳定焊接。
    • 10. 发明申请
    • IMPROVED PULSED ARC WELDING SYSTEM
    • 改进的脉冲焊接系统
    • WO1993000195A1
    • 1993-01-07
    • PCT/AU1992000306
    • 1992-06-24
    • WELDING INDUSTRIES LIMITEDCHEESMAN, Gary, LynBROUGHAM, William, Kenneth
    • WELDING INDUSTRIES LIMITED
    • B23K09/09
    • B23K9/092
    • A pulsed arc welding system having a current pulse generating circuit including a primary welding current source (19) and a power transistor switching circuit (D) controlled by a transistor driver circuit (F) for applying current pulses to a load via an inductance (G) and a flywheel diode (H), a background current generating circuit including a background driver circuit (15) applying background current to the load via a resistor and an inductance, central controlling means (E) including arc voltage monitoring circuits and reference voltage circuits which maintain the average arc voltage at a substantially constant level, one of the reference voltages being less than a voltage sufficient to maintain the welding arc, and detection circuit means (Fig. 4) for detecting when the arc voltage is less than the latter reference voltage and for causing the transistor driver circuit (F) to switch the power transistors (D) on to apply a current pulse to the load, said transistor driver circuit (F) causing the transistors (D) to be turned off when the latter reference voltage is exceeded to thereby maintain the welding arc and avoid short circuits which cause the arc to be extinguished.
    • 一种具有电流脉冲发生电路的脉冲电弧焊接系统,包括主要焊接电流源(19)和由晶体管驱动电路(F)控制的功率晶体管开关电路(D),用于通过电感(G )和飞轮二极管(H),背景电流产生电路,包括通过电阻器和电感向负载施加背景电流的背景驱动电路(15),包括电弧电压监视电路和参考电压电路的中央控制装置(E) 其将平均电弧电压维持在基本上恒定的水平,参考电压之一小于足以维持焊接电弧的电压;以及检测电路装置(图4),用于检测电弧电压何时小于后一个参考 并且为了使所述晶体管驱动电路(F)接通所述功率晶体管(D)以对所述负载施加电流脉冲,所述晶体管驱动电路(F) 导致当超过后一参考电压时晶体管(D)截止,从而保持焊接电弧并避免导致电弧熄灭的短路。