| 摘要 |
PURPOSE: A manufacturing apparatus for a molded product with internal threads is provided to prevent wrinkling or shrinkage of a molded product by separating the molded product from a mold after cooling the molded product with a cooling medium in a molding chamber within a short time. CONSTITUTION: A manufacturing apparatus for a molded product with internal threads comprises a traveling body(20) and a molding rod(10). The traveling body is formed with external threads(22) and moved back and forth by rotation. The molding rod is thread-coupled to both sides of the traveling body via the external threads, and the molding rod is formed with an internal cooling passage(11) for circulating a cooling medium. |
