| 摘要 |
<p>In a mold press molding device (1), a barrel mold (4) is supported by an upper mother mold (5), and an upper mold (2) is vertically movably supported by the barrel mold (4) so that the movement of the upper mold (2) is not restricted by the upper mother mold (5). A lower mold (3) is raised to install it in the barrel mold (4) and both the barrel mold (4) and the upper mold (2) are movably supported by the upper mother mold (5) until a press load is applied to a glass material (PF); therefore, no friction and galling occur between them. When the lower mold (3) is inserted into the barrel mold (4), the lower end surface (4g) of the barrel mold (4) is in contact with the lower mold (3) to position the molds without tilt. As a result, after press molding is started, the upper and lower molds (2, 3) and the barrel mold (4) are maintained in a correct attitude, and press molding is performed in this condition. When the press molding is completed, a press load also acts on the barrel mold (4) to maintain the mold positioned. Molding products such as highly precise optical elements can be efficiently and stably produced.</p> |
