| 摘要 |
PURPOSE:To permit different kinds of welding with one unit of device by providing two sets of speed change gear groups having different speed change ratios between a driving motor and a feed roller means and using selectively either one. CONSTITUTION:A titled device consists of a reel 5 which supplies a wire, a feed roll 9 and a pressing-roll 10 for feeding the wire, a motor 6 which rotates and drives the roll 9, two sets of speed change gear groups (a fine driven pinion 20, final driven gear 21, over-drive pinion 22 and over-drive gear 23) and a clutch means which permits selective use of either one of said groups. Said two sets of the speed change gear groups have different speed change ratios, and tramsmit the rotating output of the motor 6 to the roll 9. Different kinds of welding are accomplished with one unit of the above-mentioned device. |
