Electrode for welding

B - Operations – Transporting – 23 – K

Patent

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Details

B23K 35/04 (2006.01) B23K 11/00 (2006.01) B23K 11/14 (2006.01) B23K 11/30 (2006.01) B23K 11/31 (2006.01)

Patent

CA 2215710

In an electrode for welding with a retractable guide pin so received in a guide hole of the electrode that air blows out from a gap between the guide hole and the guide pin as the guide pin is pushed in to prevent intervention of foreign matters between an end face of an electrode and a steel sheet part or at a sliding portion of the guide pin, a large-diameter hole (33) and a small-diameter hole (34) are provided at a portion through which passes a small-diameter portion (7) of the guide pin (6) so as to form a receiving face (35) with the difference in diameter between the two, and an exhaust passage is provided near the receiving face (35) to establish communication between the large-diameter hole (33) and outside of the electrode.

Une broche de guidage est montée de manière rétractable dans un trou de guidage d'une électrode, et lorsque cette broche de guidage est enfoncée, un jet d'air est projeté depuis un espace entre le trou de guidage et la broche de guidage. Dans le but d'empêcher la pénétration de corps étrangers entre une surface terminale de l'électrode et une partie constituée de tôles d'acier, ainsi que dans une partie coulissante de la broche de guidage, un trou de grand diamètre (33) et un trou de petit diamètre (34) sont ménagés dans une partie du trou de guidage, dans laquelle s'étend une portion de faible diamètre (7) de la broche de guidage (6), pour former une surface d'appui (35) entre ces trous à deux diamètres, et un passage d'évacuation est ménagé à proximité de la surface d'appui (35) pour assurer la communication entre le trou de grand diamètre (33) et l'extérieur.

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