| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a spot welding device in which a spot welding tact time shortens even in a many dot-numbered workpiece.SOLUTION: A new workpiece W is set on a rightmost positioning tool 3. At that time, a horizontal bar 7 of a workpiece-conveying tool 4 is at a right side, that is, a position overlapping the upper edge of a base 2, and in such a state, a spot welding is performed at each welding station. Then, the horizontal bar 7 of the conveying tool 4 is positioned as it is, and the workpiece W on the positioning tool 3 is clamped by driving a clamp mechanism 8. After that, the horizontal bar 7 is raised by driving the cylinder unit 6 of the conveying tool 4. Since the workpiece W is held by the clamp mechanism 8, the workpiece is raised together with the horizontal bar 7 and disengages from the positioning tool 3.</p> |
