| 摘要 |
PURPOSE:To render the mechanism compact, maintainable and cheap by making swinging of a work holding member around the same pivot with swinging of a gun. CONSTITUTION:In a welding process, a gun 6 is turned and lifted by a cylinder 12. The gun faces the welding device and a work 4 is spot welded. On completion of welding, the gun swings again and goes down. When the gun 6 turns, the pivot 1 itself does not turn with the gun 6. Lifting and lowering of the work 4 are performed by turning a work holding member 3 with the pivot 1 by operating a cylinder 9. In this movement, the pivot 1 acts as a supporting point of turn of the work holding member 3. At the same time, it transmits driving force of turn given by the cylinder 9 to the work holding member 3. |
