| 摘要 |
PROBLEM TO BE SOLVED: To provide a bar arrangement unit manufacturing multispot welding device capable of efficiently manufacturing a bar arrangement unit nonuniform in a pitch of a vertical reinforcement, by fixing respective welding gun units by automatically moving to a desired position.SOLUTION: One or a plurality of beams 4 are extended between upper parts of support frames 2 and 3 erected on both sides of a base 1, and a plurality of welding gun units 5-12 are respectively arranged on the beams 4 so as to be capable of self-traveling along the beams 4, and the welding gun units 5-12 respectively self-travel by a distance set in a channel according to a computer program by selecting a desired channel from among channels different in a pitch of each of predetermined and prepared vertical reinforcements 31, and are fixed to its position. |
