Device used for welding catalytic converter taper pipe and flange inner ring

The utility model relates to a device used for welding a catalytic converter taper pipe and a flange inner ring. The device is characterized in that the device comprises a control cabinet, a machine cabinet, a welding machine and a switch pedal. The machine cabinet is provided with a working platform and a lifting device, a motor and a speed reducer are arranged in the machine cabinet, a fixing base is arranged on the working platform, the motor drives the fixing base to rotate through the speed reducer, a welding gun is arranged on the lifting device, the muzzle of the welding gun corresponds to the fixing base, the welding gun is connected with the welding machine through an electric welding line, the switch panel is connected with the control cabinet, and the control cabinet controls the motor, the welding machine and the lifting device to operate. When the device is used for welding, the working efficiency is increased, the labor intensity of operators is lowered, hazards which may occur during welding ca