| 摘要 |
PURPOSE: A welding wire feeding apparatus is provided to simultaneously feed a plurality of welding wires at the same speed while simplifying a structure of the welding wire feeding apparatus. CONSTITUTION: A welding wire feeding apparatus includes a plurality of driving rolls(16), a wire feeding/shielding unit(20), and a guide rod. The driving rolls(16) are mounted on a driving shaft(14) while forming a predetermined interval. A fixing shaft(24) is installed on an extension member(22) and a support roll is mounted on the fixing shaft(24). The guide rod is installed on a supporter provided at front and rear portions of each frame. The support roll has a bearing. An insulation member and a fixing ring are installed at an outer portion of the bearing.
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