The present invention discloses a manufacturing method of an automobile spare tire cover. PP engineering plastic pellets are conveyed into a barrel above a blow molding machine; the plastic pellets are heated by an extrusion screw and conveyed to an extrusion die head; a punched and formed needle-punched non-woven fabric is fixed on a fixed mold cavity plate of a blow mold; molten plastic is extruded from the die head through the extrusion die head to form an initial parison; the lower end of the initial parison is sealed by a sealing device, die head blowing is activated, and the parison is expanded to the required size by air blowing, then mold clamping is started; at the moment of mold clamping in place, an oil cylinder on a support plate is activated to push a reinforcing rib forming push plate on a fixed plate to press the parison, delay for 1–2 seconds, retract the oil cylinder and simultaneously activate a blowing needle for inflation; maintain air blowing for shaping and cooling; after a preset shaping and cooling time, open the mold and take out the finished product. The spare tire cover prepared by the method is light in weight, good in sound insulation, high in bearing capacity and excellent in bonding between the body and fabric.
Area Code: CN
Application Number: CN201110054350.2
