Auxiliary fixing device for welding

The utility model discloses an auxiliary fixing device for welding, which belongs to the technical field of automobile silencer processing and comprises a bottom plate, a mounting seat is fixedly mounted on the upper surface of the bottom plate, a rotating shaft is rotatably mounted on the mounting seat, a rotating wheel is fixedly mounted at the end of the rotating shaft, and a fixing seat is fixedly mounted at one end, far away from the rotating wheel, of the rotating shaft. A plurality of strip-shaped sliding holes are formed in the right side face of the fixing base, I-shaped blocks are slidably installed in the strip-shaped sliding holes, clamping plates are fixedly installed on the right side faces of the I-shaped blocks, rubber gaskets are fixedly installed on the side faces of the multiple clamping plates, and a driving mechanism used for driving the multiple clamping plates to move relatively is arranged in the fixing base. The driving mechanism is arranged to drive the multiple clamping plates to mo