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    • 3. 发明授权
    • Robot welding gun unit
    • 机器人焊枪单元
    • US5628923A
    • 1997-05-13
    • US531916
    • 1995-09-21
    • Toshihiro Nishiwaki
    • Toshihiro Nishiwaki
    • B23K11/24B23K11/11B23K11/30B23K11/31H02K1/16
    • B23K11/3063B23K11/311B23K11/315B23K11/317
    • A robot welding gun comprises a welding gun mounting bracket provided at the tip end of a robot arm, a cylinder unit incorporated in the bracket for adjusting the position of a fixed arm, a rod which is rotated or moved forward or backward by the cylinder unit and is connected to the fixed arm and a gun body which include the arm and is slidably mounted on the mounting bracket. As a result, it is possible to eliminate the variation of movement of the welding gun caused by the robot by adjusting the position of the welding gun relative to the fixed arm in accordance with the wearing amount of an electrode of the welding gun on the side of the fixed arm to always keep the same in contact with a surface of a weldment so as to provide a robot welding gun unit easy in control and capable of safe and accurate welding without generating distortion in the weldment.
    • 机器人焊枪包括设置在机器人手臂的前端的焊枪安装支架,装在支架中的气缸单元,用于调节固定臂的位置,由气缸单元向前或向后转动的杆 并且连接到固定臂和包括臂并且可滑动地安装在安装支架上的枪体。 结果,可以根据焊枪侧面的电极的磨损量,通过调整焊枪相对于固定臂的位置来消除由机器人引起的焊枪的移动的变化 固定臂总是保持与焊件表面相同的接触,从而提供一种易于控制的机器人焊枪单元,能够安全而准确的焊接而不产生焊件变形。
    • 4. 发明授权
    • Current sensor for welder conductor
    • 焊机导体电流传感器
    • US4739149A
    • 1988-04-19
    • US021115
    • 1987-03-03
    • Toshihiro NishiwakiTatsuo Morita
    • Toshihiro NishiwakiTatsuo Morita
    • G01R19/165B23K9/10
    • B23K9/10
    • A current sensor assures the detection of a current flowing through a welder conductor without requiring a particular power source, and indicates the current state with the aid of a lamp. In one embodiment, a welder conductor penetrates a toroidal core across which connects a slider resistor whose sliding arm connects through a rectifier circuit, and a parallel circuit of a capacitor and a resistor, to a lamp. A second embodiment imterposed between the parallel circuit and lamp wherein a series circuit of a second resistor and a Zener diode, and a transistor base is connected to a connection point between the second resistor and a Zener diode, and the emitter-collector circuit of which transistor drives the lamp. A third embodiment adds a further series circuit of another lamp and resistor across the parallel circuit and across the series circuit of the second resistor and the Zener diode. Also, the collector of the transistor is connected to the control terminal of a thyristor, the cathode of which thyristor is connected to the output terminal of the rectifier circuit and to the anode of which thyristor the lamp is connected. The other end of which lamp connects to the other output terminal of said rectifier circuit.
    • 电流传感器确保检测流过焊接导体的电流,而不需要特定的电源,并借助于灯指示当前状态。 在一个实施例中,焊接导体穿过环形芯,跨越其的滑动电阻器,其滑动电阻器通过整流器电路连接到电容器和电阻器的并联电路到灯。 并联电路和灯之间的第二实施例,其中第二电阻器和齐纳二极管的串联电路和晶体管基极连接到第二电阻器和齐纳二极管之间的连接点,并且其发射极 - 集电极电路 晶体管驱动灯。 第三实施例在并联电路和跨第二电阻器和齐纳二极管的串联电路之间增加另一个灯和电阻器的另一个串联电路。 此外,晶体管的集电极连接到晶闸管的控制端子,其晶闸管的阴极连接到整流器电路的输出端子以及与灯连接的晶闸管的阳极。 该灯的另一端连接到所述整流电路的另一输出端。
    • 5. 发明授权
    • Shell mold for casting a cylindrical product, apparatus for molding the
shell mold, and casting method using the shell mold
    • 用于铸造圆柱形产品的外壳模具,用于模制外壳模具的装置和使用壳模的铸造方法
    • US5732761A
    • 1998-03-31
    • US626606
    • 1996-04-02
    • Akio ShimizuTaiti YoshikawaMasaru UsuiTakehiro NagayaYoshio KashiwagiToshihiro Nishiwaki
    • Akio ShimizuTaiti YoshikawaMasaru UsuiTakehiro NagayaYoshio KashiwagiToshihiro Nishiwaki
    • B22C7/00B22C13/08B22D33/04
    • B22C7/005
    • A shell mold includes a plurality of sleeve forming portions. Of the sleeve forming portions, at least an endmost sleeve forming portion located adjacent to a subrunner portion has a modified shape for compensating for deformation of cast sleeves caused by solidification and contraction of molten metal. A shell molding apparatus includes an upper die and a lower die which constitute a die set for molding a shell mold. The lower die is composed of shell molding inserts, each having the shape of a halved cylinder, spiny insert receiving recesses formed in the shell molding inserts, and spiny inserts retractably provided in the spiny insert receiving recesses. In a casting method using a shell mold, many protrusions of a spiny insert are reversely copied to the inner surface of a halved shell mold at the undercut portion of the inner surface, thereby forming many depressions at the undercut portion. The halved shell mold is parted from the lower die. A plurality of bore forming cores are disposed in the halved shell mold. The halved shell mold and another halved shell mold are engaged with each other, thereby forming a shell mold for casting. Casting is performed using the thus formed shell mold.
    • 壳模具包括多个套筒形成部分。 在套筒形成部分中,至少位于辅助部分附近的最终套筒形成部分具有用于补偿由熔融金属的凝固和收缩引起的铸造套管变形的改进形状。 外壳成型装置包括构成用于模制壳模的模具的上模和下模。 下模具由壳体模制插入件组成,每个模制插入件具有半圆柱形的形状,形成在壳模制插入件中的多刺的插入物容纳凹槽,以及可伸缩地设置在多刺插入物容纳凹部中的多刺插入件。 在使用壳模的铸造方法中,多根插入件的多个突起在内表面的底切部分反向复制到半壳模具的内表面,从而在底切部分处形成许多凹陷。 半模壳从下模分出。 多个孔形成芯设置在半壳模具中。 另外一半的外壳模具和另一个半模壳体彼此接合,从而形成用于铸造的壳模。 使用如此形成的壳模具进行铸造。
    • 9. 发明授权
    • Tool changer for welding robot
    • 焊接机器人换刀器
    • US4917619A
    • 1990-04-17
    • US282626
    • 1988-12-09
    • Toshihiro Nishiwaki
    • Toshihiro Nishiwaki
    • B23K9/32B23K11/31B25J15/04H01R13/631H01R13/66
    • H01R13/631B23K11/318B23K9/323B25J15/04H01R13/66
    • A tool changer for welding robot comprising: detachable male portions of connectors provided at a substrate fixed to a robot arm side for supplying electricity, gas, air, water to the tool side from the robot arm side; and detachable female portions of connectors to be connected to the male portions of the connectors and provided at a substrate fixed to a tool side for receiving electricity, gas, air, water from the male portions of connectors, each female portion composed of the connector, a protective tube provided at the substrate fixed to the welding gun side, a coupler inserted inside thereof, and an O-ring provided between the protective tube and the coupler, wherein the connector and the coupler are integrally formed and are radially slidable within the protective tube around the O-ring. A transformer is provided centrally of the connectors on the robot arm side substrate.
    • 一种焊接机器人的换刀装置,其特征在于,具备:固定在机器人臂侧的基板上的连接器的可分离的阳部,用于从所述机器人臂侧向所述工具侧供给电,气体,空气,水; 以及连接器的可拆卸的阴部分,连接到连接器的阳部,并且设置在固定到工具侧的基板上,用于从连接器的阳部接收电,气体,空气,水,由连接器组成的每个阴部, 设置在固定到焊枪侧的基板上的保护管,插入其内的联接器和设置在保护管和联接器之间的O形环,其中连接器和联接器一体地形成并且在保护 围绕O形圈管。 在机器人臂侧基板上的连接器的中央设置变压器。
    • 10. 发明授权
    • Resistance welding control method
    • 电阻焊接控制方法
    • US5436422A
    • 1995-07-25
    • US257807
    • 1994-06-10
    • Toshihiro NishiwakiTatsuo Morita
    • Toshihiro NishiwakiTatsuo Morita
    • B23K11/24B23K11/25
    • B23K11/256
    • A resistance welding control method capable of reducing generation of spatter to the utmost during consumption of electrodes, thereby obtaining a desired nugget and assuring excellent welding quality and controlling with ease. The resistance welding control method comprises the steps of detecting a primary or secondary voltage when the welding current is supplied to the workpiece, monitoring a resistance value of the workpiece at welding operation with the lapse of time based on the primary or secondary voltage and the welding current which is detected in synchronization with the detection of the primary or secondary voltage so that an expansion tendency of electrode tip diameter is recognized and stored as first data in a computer of the resistance welding apparatus and at the same time a spatter generation condition at welding operation is learned and stored as second data in the computer, obtaining a welding current pattern based on the first and second stored data and statistically processed data stored in the computer, and controlling resistance welding by the welding current pattern so as to obtain a desired nugget while reducing generation of spatter to the utmost even in the consumption of electrodes.
    • 一种电阻焊接控制方法,其能够在消耗电极期间最大程度地减少飞溅的产生,从而获得期望的熔核并且保证优异的焊接质量和易于控制。 电阻焊接控制方法包括以下步骤:当将焊接电流提供给工件时检测初级或次级电压,基于初级或次级电压和焊接,在焊接操作随时间监视工件的电阻值 与主电压或次级电压的检测同步地检测出电流,使得电极尖端直径的膨胀趋势被识别并作为第一数据存储在电阻焊接装置的计算机中,同时在焊接时产生飞溅物生成条件 操作被学习并存储在计算机中作为第二数据,基于存储在计算机中的第一和第二存储数据和统计处理数据获得焊接电流模式,并且通过焊接电流模式控制电阻焊接,以便获得期望的块 同时尽可能地减少电极的消耗产生 。