The invention discloses a production method for a fuel tank: a) Feeding fuel tank ingredients into a co-extrusion device to extrude a tubular parison; b) Feeding the extruded tubular parison into a blow molding machine for blow molding of the fuel tank; c) Feeding the blow-molded fuel tank into a cooling mold comprising an upper mold and a lower mold, whose cavity matches the shape of the fuel tank. Cooling water is introduced into the upper and lower molds to cool and shape the fuel tank. The upper mold is provided with a first vent hole and a second vent hole. While cooling water is supplied, cold air is introduced and hot air inside the fuel tank is discharged through the vent holes. The production method adopts an excellent cooling and shaping process, ensuring no displacement of key positions and stable dimensions of the fuel tank, guaranteeing smooth subsequent processing and welding, shortening cooling time and greatly improving production efficiency.
Country Code: CN
Application Number: CN201210588663.0
