| 摘要 |
<p>The present invention relates to a spot welding device and, more specifically, to a technology wherein, when spot welding is to be conducted on opposite sides of a second welding object symmetrically, welding points are symmetrically formed easily and accurately, thereby preventing defective welding resulting from asymmetric welding and improving working speeds. Moreover, the present invention relates to a technology wherein the structure of electrodes is improved such that the electrodes not only have unique functions as electrodes, but also a function of retaining the position of a first welding object in the welding process, thereby enabling stable welding and simplifying the structure. In addition, the present invention relates to a technology wherein the structure of electrodes is improved such that the position of the (-) electrode and the state of contact with the welding object can be grasped accurately, thereby facilitating a work.</p> |
