Numerical control automatic hot-air welding machine

The invention relates to a numerical control automatic hot-air welding machine and belongs to the field of welding of dissimilar materials. The numerical control automatic hot-air welding machine is provided with a tool table assembly, a movable frame assembly and a welding frame assembly. The welding frame assembly is provided with a hot-air welder which is connected with an air exchange connecting sleeve. The air exchange connecting sleeve is fixedly connected with a piston cylinder assembly. The piston cylinder assembly is connected with an air nozzle for blowing air uniformly. A fixing plate used for fixing the air nozzle is fixedly connected to the lower side of the air nozzle. Supporting arms are symmetrically arranged on the two sides of the fixing plate. The movable frame assembly is connected to the lower sides of the supporting arms through a rotary shaft and is connected with a roller frame through the rotary shaft. A rubber roller used for pressing materials during welding is arranged below the roller frame. The supporting arms are further connected with overturning air cylinders for controlling the roller frame to overturn. The tool table assembly is provided with a ball screw module for moving workpieces and a positioning ring for holding workpieces. The numerical control automatic hot-air welding machine has the beneficial effects that double outlets are adopted for hot air so that overheating of the machining environment can be effectively prevented, and machining efficiency is improved; and numerical control is adopted so that machining quality can be effectively improved, the quality problems caused by manual operation are avoided, and the skill requirement for operators is lowered.