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    • 4. 发明授权
    • Wire feeder with run-in control
    • 送丝机带有自动控制
    • US08225977B2
    • 2012-07-24
    • US10794872
    • 2004-03-08
    • Andreu P. Meckler
    • Andreu P. Meckler
    • B65H51/10
    • B65H51/30B23K9/125B23K9/1336B23K9/173B65H2701/36
    • A wire feeder for an electric arc welder comprising feed rolls driven by an electric motor for moving a welding wire toward a workpiece for an arc welding process. The motor is rotated at a speed determined by a WFS signal from a controller when energized by actuation of a start switch, a switch network has a first condition allowing the motor to operate at the speed determined by the WFS signal and a second override condition forcing the motor to rotate at a fixed lower speed, a toggle circuit with a first position to shift the switch network into the second condition upon actuation of the motor start switch and a second position to shift the switch network to the first condition upon receipt of a toggle signal, and a device to create the toggle signal when the load current to the motor exceeds a given value.
    • 一种用于电弧焊机的送丝机,包括由电动机驱动的进料辊,用于将焊丝向工件移动用于电弧焊接过程。 电动机以通过启动开关的启动通电时由来自控制器的WFS信号确定的速度旋转,开关网络具有允许电动机以由WFS信号确定的速度运行的第一条件和第二超驰条件强制 电动机以固定的较低速度旋转;具有第一位置的拨动电路,用于在电动机起动开关致动时将开关网络移动到第二状态;以及第二位置,以在接收到电动机起动开关时将开关网络移动到第一状态 触发信号,以及当到电动机的负载电流超过给定值时创建触发信号的装置。