| 摘要 |
A molding device capable of improving the quality of a molding product is provided. A control unit (70) controls a blowing mechanism (60) such that the blowing mechanism (60) expands and molds a metal pipe material (14) by supplying gas into the metal pipe material (14). In this way, the metal pipe material (14) is expanded and molded into a shape corresponding to a main cavity portion (MC), and a portion corresponding to a flange portion (80b) of a finished product expands toward a sub-cavity portion (SC). The control unit (70) controls a drive unit (81) such that the drive unit (81) molds the flange portion (80b) by crushing a second molded portion (14b) of the expanded metal pipe material (14) in the sub-cavity portion (SC) . Here, the sub-cavity portion (SC) communicates with the outside of the molds during the molding of the flange portion (80b), and therefore, air between the inner surface of the sub-cavity portion (SC) and the second molded portion (14b) of the metal pipe material (14) can escape to the outside of the mold. |
