| 摘要 |
<p>A resin hose manufacturing method which is capable of omitting a burr removing finishing step by preventing the leakage of a material, which causes burrs to occur on a final product, during the blow molding of a hose body and the injection molding of a joint member, which molding methods are used to omit a polishing process for obtaining a proper shape of the inner surface of a joint member at which a resin hose is connected to a mate tube body, and improving the dimensional accuracy of the product, and which is also capable of preventing the occurrence of chipping during the injection molding operation. To attain this object, in the present invention, a thermoplastic resin is blow molded to form a hose body (12), and this hose body (12) is then set in an injection mold (20) which includes an inner mold member (24) and an outer mold member (22). A material is then injected into a molding cavity (26) adjacent to an opening portion of the hose body (12) with the inner mold member (24) fitted closely and liquid-tightly in the opening portion of the hose body (12) via seal means (28, 30, 40, 42), to mold a joint member of the resin hose with respect to the mate tube body and combine the joint member with the hose body (12) unitarily.</p> |
