The invention discloses an
argon arc welding machine with a heat dissipation function and a working method thereof. The
argon arc welding machine comprises an operating platform, a fixing plate, a support and a
welding gun, wherein a second cylinder is fixedly arranged at the center of one side of the fixing plate, and an ejector rod is fixedly arranged on a
piston rod of the second cylinder. Theejector rod is driven by the second cylinder to push two movable plates to move towards the middle, a
pipe fitting is fixed by two clamps, the
pipe fitting can be loosened instead, the
pipe fitting isconvenient to fix and loosen, manual fixing is avoided, loosening is easy, labor intensity can be reduced, and working efficiency is improved; a first cylinder drives an air cylinder telescopic rod to push a sliding plate to move rightwards, so that the
pipe fitting is pushed to slide rightwards, and the
pipe fitting can be roughly adjusted in a
large range; the sliding plate is driven by a second lead screw to push the
pipe fitting to slide rightwards, accurate adjustment in a
small range can be carried out, the pipe fitting can be positioned more accurately, deviation in positioning cannotoccur,
welding is easy, and operation is convenient.