ELECTRODE DEVICE FOR SPOT WELDING MACHINE

摘要

PURPOSE:To increase the operation rate of a welding machine without any suspension in welding work by fitting a tomatically the next electrode to an electrode holder and by withdrawing the used electrode as well as continuing the welding with a new electrode by turning the electrode holder after performing the spot welding with suspension of the electrode in the prescribed times. CONSTITUTION:The body to be worked on a counter electrode 21 is spot-welded with an electrode 190 by suspending a rotary shaft 2 and electrode holder 1 together with an arm 6 by air pressure device 5. The electrode holder 1 is turned 90 deg. by a motor 7 after welding in the prescribed times and the welding is continued by an electrode 191. Simultaneously the next electrode 192 is fitted by the air pressure device 15 and the used electrode 19r(19o) is withdrawn by hammering it by operating a hammer 17 with the air pressure device 28. The suspension in welding work by the change of electrode 19 is eliminated and the operational efficiency of welding machine is increased.