Adjustable welding mechanism

The utility model relates to an adjustable welding mechanism which comprises a main body support, an auxiliary support and a welding gun, the main body support comprises two symmetrical side plates, the swinging auxiliary support is arranged between the two side plates in a coupling mode, and the two side plates are both provided with arc-shaped limiting holes for limiting swinging of the auxiliary support. Locking bolts are fixedly arranged on the two sides of the auxiliary support, wherein the locking bolts and the arc-shaped limiting holes are adjusted in a sliding mode and locked. A sliding rail is fixed to the front face of the auxiliary support and provided with a sliding block, one end of the sliding block is provided with a hoop clamping piece used for clamping and fixing a welding gun, the other end of the sliding block is provided with a threaded hole, and the back face of the auxiliary support is fixedly connected with a power cylinder. The movable block is provided with an adjusting bolt which is