| 摘要 |
PURPOSE:To prevent void from developing within molding material by a method wherein the volume of a cavity is reduced after the completion of pouring of the molding material. CONSTITUTION:A top force 8 and a bottom force 11 are closed by the predetermined force and resin is poured therebetween. At this time, each elastic member 21 pinched between a first cavity member 17 and a support is set so as to keep the predetermined height H. Under the state as mentioned above, the height to control the volume of each cavity 13 or the distance from the top surface of a second cavity 18 to the ceiling surface of the cavity 13 is turned to be D. When the pouring of resin is completed, a mold opening and closing cylinder device (not shown in fig.) is actuated so as to enhance the mold clamping force applied between the top and bottom forces 8 and 11. Accordingly, the distance from the top surface of the second cavity 18 to the ceiling surface of the cavity 13 or the volume of the cavity 13 is reduced. Due to the reduction of the volume of the cavity 13, the resin poured into the cavity 13 is compressed, resulting in eliminating the development of void within the resin. |
