China's machinery manufacturing industry is in an industrial state of transformation and development. The industry's technical level is developing rapidly, production concentration is high, and market access is very large. Our company has advanced machinery manufacturing technology, a group of outstanding machinery manufacturing R&D personnel and perfect standardized quality supervision and management, and is committed to the globalization, networking, automation and green development of the machinery manufacturing industry. The bracket is an important structure for supporting objects. When some shorter brackets are used, in order to be usable, the short brackets need to be welded to meet the standard of use. At present, there are still some problems in the existing bracket welding tool: it is inconvenient to fix the bracket, the stability of the bracket is not high during welding, and the bracket welding is prone to shift from the predetermined position. After soldering, solder the other half of the bracket without leaving it. The purpose of the utility model is to provide a bracket welding tool with a turning mechanism. By inserting the bracket into the positioning cylinder, and then rotating the screw rod, the screw rod drives the pressure plate to move in the chute, so that the pressure plate presses the bracket, and the bracket can be It is stably fixed in the positioning cylinder, which is convenient for welding and avoids the deflection of the bracket during welding. In addition, the servo motor drives the first shaft to rotate, the first shaft drives the first gear to rotate, and the first gear drives the second gear. Rotation, the second gear drives the positioning cylinder to rotate, the bracket fixed in the positioning cylinder can be turned over, and the bracket can be fully welded, so as to solve the problems raised in the above background technology. Compared with the prior art, the beneficial effects of the present utility model are: 1. The utility model inserts the bracket into the positioning cylinder, and then rotates the screw, so that the screw drives the pressing plate to move in the chute, so that the pressing plate compresses the bracket, The bracket can be stably fixed in the positioning cylinder, which is convenient for welding and avoids the deviation of the bracket during welding. The utility model drives the first rotating shaft to rotate through the servo motor, the first rotating shaft drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the positioning cylinder to rotate, and the bracket fixed in the positioning cylinder can be turned over. It is convenient to fully weld the bracket.