WIRE FEEDING DEVICE AND ARC WELDING DEVICE

This wire feeding device for feeding a welding wire (W) from a wire supply source to a welding torch is provided with: an intermediate wire supply source (41) which is disposed between the wire supplysource and the welding torch, temporarily receives the welding wire (W) supplied from the wire supply source, and supplies the received welding wire (W) to the welding torch; a first feeding part (41d) which feeds the welding wire (W) from the wire supply source to the intermediate wire supply source (41); a second feeding part (42) which feeds the welding wire (W) received by the intermediate wire supply source (41) to the welding torch; and a feeding control unit (5b) which controls the respective feeding speeds of the welding wires (W) fed by the first feeding part (41d) and the second feeding part (42). 将焊丝(W)从焊丝提供源向焊枪进给的焊丝进给装置具备：中间焊丝提供源(41)，其配置于焊丝提供源与焊枪之间，暂时收容从焊丝提供源提供的焊丝(W)，将收容的焊丝(W)向焊枪提供；第1进给部(41d)，其将焊丝提供源的焊丝(W)向中间焊丝提供源(41)进给；第2进给部(42)，其将收容于中间焊丝提供源(41)的焊丝(W)向焊枪进给；和进给控制部(5b)，其对第1进给部(41d)以及第2进给部(42)的焊丝(W)的进给分