The invention discloses a
refrigeration pipe welding positioning method and device. The method comprises the following steps that S1,
branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the
welding gun, and a
branch pipe of the main pipeline moves to cross the
welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow
rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the
branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the
machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.