Welding quality decision apparatus and welding machine provided with the same

A welding machine, comprising:

• a weld trimmer;
• a quality decision apparatus;
• color/luster detection means for detecting a color/luster of a member to be welded at a welding point after welding;
• decision means for deciding whether or not a detected color/luster detection is higher than a comparative reference color/luster;
• control means for controlling a welding machine on the basis of the decision result from said decision means;
• and
• wherein said color/luster detection means is adapted to detect the color/luster of the member to be welded during trimming by said weld trimmer of a weld on the member to be welded.

A welding quality decision apparatus comprising:

• paint application means for applying a paint whose color changes in accordance with a temperature onto a trimming position immediately after trimming;
• color detection means for detecting surface color of said paint applied to the trimmed weld;
• decision means for deciding whether or not a detected color value is higher than a comparative reference color value;
• and
• control means for controlling a welding machine on the basis of the decision result.

A welding quality decision apparatus comprising:

• a paint applicator which applies a paint, whose color changes in accordance with a temperature, onto a trimming position immediately after trimming a weld;
• a color detector which detects surface color of said paint applied to the trimmed weld;
• a decision circuit which decides whether or not a detected color value is higher than a comparative reference color value;
• and
• a controller which controls a welding machine on the basis of the decision result.