| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for automatically changing electrodes, which device has an electrode supplying mechanism capable of smoothly supplying a new electrode. SOLUTION: In the device which draws out a consumed tungsten electrode from a welding torch and inserts a new electrode into the welding torch after repeatedly welding objects to be welded by means of the welding torch fixed to a welding torch moving device, the device for automatically changing tungsten electrodes comprises: the welding torch for clamping and unclamping the tungsten electrodes by a cylinder; a consumed electrode drawing-out mechanism 21 for drawing out the consumed tungsten electrode of the welding torch moved to a consumed electrode drawing-out position 21P; the electrode supplying mechanism for supplying the new tungsten electrode located at the leading end in the sliding direction by sliding an electrode holder 32 containing a plurality of new tungsten electrodes and by stopping the new tungsten electrode through bringing it into contact with an electrode guide block 39 at an electrode supplying position 22P; and an electrode moving mechanism for moving the new tungsten electrode by means of a driving source to an electrode protruding position. COPYRIGHT: (C)2008,JPO&INPIT
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