Three-way catalyst assembly welding clamp

The utility model relates to a three-way catalyst assembly welding fixture, which comprises a mounting plate, a welding fixture and a three-way catalyst assembly, the top of the mounting plate is fixedly provided with the welding fixture, the welding fixture is fixedly provided with the three-way catalyst assembly, the bottom of the mounting plate is provided with a fixing column, and the fixing column is provided with a clamping groove. And a connecting mechanism matched and fixed with the fixing column is arranged at the bottom of the mounting plate, the connecting mechanism comprises a connecting box, and rotating shafts are rotationally mounted on the front side and the rear side of the inner wall of the connecting box. According to the welding fixture for the three-way catalyst assembly, the column body and the sliding frame slide relatively, so that the sliding track of the fixing column is stable, meanwhile, under the condition that a rack on the fixing column is meshed with a gear in the connecting bo