JPS6177169U

JPS6177169U -

Info

Publication number: JPS6177169U
Application number: JP16237184U
Authority: JP
Priority date: 1984-10-29
Filing date: 1984-10-29
Publication date: 1986-05-23

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示すブロツク図、
第２図は溶接電流と溶接電圧の関係を示す図、第
３図は溶接電流とワイヤ送給モータ電圧・ワイヤ
送給量の関係を示す図である。１…溶接電流設定器、２…第１関数発生器（第
１の手段）、３…第２関数発生器（第２の手段）
、４…第３関数発生器（第３の手段）、５…アー
ク電圧検出器、６…コンパレータ（比較手段）、
７，８…アナログスイツチ（信号切換手段）、９
，１０…インバータ、１１…電圧調整器、１２…
ワイヤ送給モータ。 FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a diagram showing the relationship between welding current and welding voltage, and FIG. 3 is a diagram showing the relationship between welding current, wire feed motor voltage, and wire feed amount. 1... Welding current setting device, 2... First function generator (first means), 3... Second function generator (second means)
, 4... Third function generator (third means), 5... Arc voltage detector, 6... Comparator (comparison means),
7, 8...Analog switch (signal switching means), 9
, 10... Inverter, 11... Voltage regulator, 12...
Wire feed motor.

Claims

[Scope of utility model registration request]

A control device for an arc welding machine that controls a wire feed amount using an arc voltage includes a first means for outputting as a signal an arc voltage upper limit value corresponding to a welding current value set by a welding current setting device; a second means for outputting as a signal a value to which the wire feed amount should be limited when the arc voltage upper limit value corresponding to the welding current value is exceeded; and a wire corresponding to the arc voltage detected by the arc voltage detector. a third means for outputting the feed amount as a signal;
a comparison means for performing a comparison judgment between the output of the means and the output of the arc voltage detector; and a judgment output of the comparison means, which determines whether the output level of the arc voltage detector is equal to or lower than the output level of the first means. For example, the output signal of the third means is transmitted as a control signal to the voltage regulator of the wire feed motor, and when the output level of the arc voltage detector exceeds the output level of the first means, the second A control device for an arc welding machine, comprising signal switching means for transmitting an output signal of the means to a voltage regulator of a wire feeding motor as a control signal.