B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/94
B23K 11/36 (2006.01) B23K 11/31 (2006.01)
Patent
CA 2012575
-13- ABSTRACT OF THE DISCLOSURE Pressure applying device for resistance welding which comprises a pair of two gun arms having an elec- trode tip at two opposed ends of the arms, a flexible supporting means connecting said two arms, an actuator provided between said two arms, and a link mechanism connecting said two arms to define movement of the electrode tip. According to this invention, the opera- tion of said actuator to pull the gun arm allows the electrode tips in the open position as well as the supporting means accumulating resilience. And, the reverse operation of said actuator can provide an elas- tic force by said flexible supporting means acting on the pieces between the electrodes, in addition to the welding pressure by the actuator. This invention there- fore can provide the pieces to be welded with a great welding pressure and a high welding accuracy by making use of a small-sized, light-weight device with good stiffness. Said flexible supporting means as a sup- porting member during the arm's movement can prevent such a wear and resultant mechanical play that the hinge portion of conventional devices often experiences. The use of the flexible supporting means, in conjunction with the actuator, can provide a remarkably great welding force. If the welding force is set to the same level as conventional devices, this device can be con- structed into a small-sized, light-weight one. Further- more, said link mechanism connecting the two arms to define movement of the electrode tip provides effective support to eliminate misalignment between the electrode tips, thereby achieving a better welding accuracy.
Kirby Eades Gale Baker
Saito Akihiro
LandOfFree
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