Embedded part welding tool

The utility model relates to the technical field of welding, in particular to an embedded part welding tool. The tool comprises a tool frame, through openings are formed in the two sides of the tool frame correspondingly, receding grooves connected with the through openings are formed in the two sides of the top of the tool frame correspondingly, side positioning assemblies and upper positioning assemblies are arranged in the two receding grooves correspondingly, and driving parts for driving the side positioning assemblies and the upper positioning assemblies to operate synchronously are arranged at the bottom of the inner side of the tool frame; the side positioning assembly comprises a rotating shaft which is rotationally arranged in the corresponding through opening through a bearing, and an L-shaped rotating frame is arranged in the middle of the rotating shaft. The side positioning assembly and the upper positioning assembly are arranged on the tool frame and driven by the driving part to operate at the