| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding wire feeding device 31 which does not require to adjust pressurization force of a welding wire 11 on a wire straightening part 32 according to the remaining amount of the welding wire 11 in a wire reel 23.SOLUTION: A wire insertion roller 35 is supported by one end part 33a of a rotation arm in a welding wire feeding device 31. A movable arm 41 is supported by a rotation arm 33, and two movable rollers 37 and 38 are respectively supported by both end parts 41a and 41b of the movable arm, while an upper part of a fixed roller 36 contacts with a welding wire 11 between two movable rollers 37 and 38. When the wire insertion roller 35 is pushed up by the welding wire 11, the rotation arm 33 rotates so that two movable rollers 37 and 38 push down the welding wire 11. As a result, even if the welding wire 11 in a wire reel 23 is consumed, the pressurization forces of two movable rollers 37 and 38 do not run short. |
