| 摘要 |
PURPOSE:To avoid a welding fault with checking overlaps, etc. and to obtain the product of excellent welding quality by giving a relative repetition vibration between a conduit cable and the welding core wire to be penetrated therein. CONSTITUTION:The magnetization condition and nonmagnetization condition of an iron core 54a are periodically obtd. when an alternating current is impressed on the coil 54b of a solenoid 54. The support member 56 opposing to the iron core 54a of the solenoid 54 is vibrated in repetition by the attraction due to a magnetic force and the restoring force of a plate spring 58 accordingly and the conduit cable 38 forming in a body with the support member 56 is periodically vibrated in repetition as well. A relative movement is therefore produced between the conduit cable 38 and welding core wire 32, which are made to be slided each other with a dynamical friction condition. Consequently, a deflection, etc. are not caused on the core wire 32 of the inner part even if a big curve is caused on the conduit cable 38 following the desplacement of the welding torch. |
