Welding gun control device, welding gun control system, and welding system

A welding gun control system, comprising:

• a welding gun that includes a movable electrode driven by a servomotor and a counter electrode facing the movable electrode and pressurizes and welds a welding target between the movable electrode and the counter electrode;
• and
• a welding gun control device that controls the welding gun,
• wherein the welding gun control device includes:
• a motion controller that moves the movable electrode at a first speed and moves the counter electrode or the welding target at a second speed lower than the first speed, the welding target being disposed between the movable electrode and the counter electrode;
• and
• a detector that detects the welding target based on an operating status of the servomotor driving the movable electrode while the motion controller is moving the movable electrode and the counter electrode.

A welding system, comprising:

• a welding gun that includes a movable electrode driven by a servomotor and a counter electrode facing the movable electrode and pressurizes and welds a welding target between the movable electrode and the counter electrode;
• a welding gun control device that controls the welding gun;
• a robot that holds the welding gun or the welding target and includes a robot servomotor that drives a plurality of axes;
• and
• a robot control device that controls the servomotor of the welding gun and the robot servomotor,
• wherein the welding gun control device includes:
• a motion controller that moves the movable electrode at a first speed and moves the counter electrode or the welding target at a second speed lower than the first speed, the welding target being disposed between the movable electrode and the counter electrode;
• and
• a detector that detects the welding target based on an operating status of the servomotor driving the movable electrode while the motion controller is moving the movable electrode and the counter electrode.