| 摘要 |
PROBLEM TO BE SOLVED: To produce a molding of uniform transfer inexpensively in a short molding cycle by controlling the cooling efficiency of a temperature regulating water by partially changing the heat conductivity of the wall surface of a temperature regulating water passage for cooling the surface of a cavity formed in a set of split molds. SOLUTION: A molding metal mold 1 is constituted of a set of splits molds comprising fixed metal molds 10 and movable metal molds 20. For example, a part to be cooled relatively weakly is a peripheral part in a cavity, especially the peripheral part on the side of a stamper 40, and a part to be cooled relatively strongly is the inside part in the cavity. In the outermost passage 13c in the temperature regulating water passage 13 of the fixed metal mold 10, an insulating material 14 is arranged on the side toward a stamper 40 in order to make lower than the heat conductivity of the wall surfaces of the passages 13a, 13b on the side of the inside to be cooled strongly. In this way, the cooling efficiency of the temperature regulating water is decreased, and the surface temperature distribution of the cavity 30 is controlled. As a result, a good transfer can be done even in the peripheral part. |
