| 摘要 |
PURPOSE: A spot welding device is provided to save supplementary material cost created in the welding of a product and a pipe and to reduce welding failure by a gap between the product and the pipe. CONSTITUTION: A spot welding device comprises upper and lower welding guns(10,20) and jig unit(30). The upper welding gun is composed of a welder frame(3), upper and lower frames(5,7), and an upper welding rod(15). The upper welding rod is operated with the drive of a cylinder(11). The lower welding gun is installed in the lower frame. The lower welding gun has a lower welding rod(25). One side of the lower welding gun is connected to the upper welding gun through an auxiliary cable. The jig unit induces the contact of welded-product with the lower welding gun by an operating stroke of the upper welding gun. The jig unit comprises a ground slider(22) grounding the welded-product.
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