The invention belongs to the technical field of plastic pressing and hot melting, and particularly relates to a hot air
welding machine and a working method and using method thereof. The hot air
welding machine comprises a rack, and a pressurizing mechanism and a
metal conduction hot melting mechanism are arranged on the rack; the
metal conduction hot melting mechanism is suitable for carrying outhot melting on a wiredrawing cloth, an upper edge covering belt and a lower edge covering belt laminated at the inlet of the pressurizing mechanism; and the pressurizing mechanism is suitable for pressurizing,
welding and conveying the hot-melted wiredrawing cloth, the upper edge covering belt and the lower edge covering belt. According to the hot air welding
machine, heat needed by welding is obtained in a heat
conduction mode, hot air penetrates through a hot
air cavity and then is exhausted, the hot air does not need to make direct contact with the wiredrawing cloth, the upper edge covering belt and the lower edge covering belt, the
heat output range is centralized, hot air
diffusion is prevented, material wrinkling deformation and bright edges generated in the periphery of the weldingposition are avoided, and the welding quality is improved. The small-size hot
air cavity conducts heat conduction welding, high-temperature heat can be continuously output, and the welding efficiencyis high.