| 摘要 |
PURPOSE:To manage a core wire in the minimum space, and to execute easily an automaticwelding of a narrow welding place by installing as one body a pair of welding core wire feed rollers in an automatic welding device, to a welding torch rotating gear. CONSTITUTION:When a welding work is executed in a structure 13 having a narrow working space, a welding torch 1, a rotating gear 11, and feed rollers 6, 7 of a welding core wire 2 are put into the structure 13 by advancing a slide arm 5 in the direction of 14. The core wire 2 is fed in the direction of 15 by a rotation of both the feed rollers 6, 7 and fed into the welding torch 1. When the welding torch 1 is rotated by a rotation of the rotating gear 11, both the feed rollers 6, 7 are also rotated simultaneously, and the core wire 2 is bent along the circumferential side part of one of the feed rollers 6, 7 by the rotating direction and fed to the torch 1. Accordingly, its bending radius becomes a small size which is equal to the diameter of the feed rollers 6, 7, the management of the core wire can be performed in the minimum moving space determined by a diameter size of the roller, and welding is executed very easily in the narrow work space. |
