| 摘要 |
PROBLEM TO BE SOLVED: To reduce the temp. difference generated between the half mold provided on the most upstream side of a heating medium passage and the half mold provided on the most downstream side thereof when a mold is heated or cooled by dividing the heating medium passage in the mold into a plurality of parallel passages and allowing the heating medium supplied to the mold to flow only through one row of the half molds. SOLUTION: The heating medium introduced from the heating medium inlet 148A provided to a mold frame 124 is divided to flow to holes 130, 132, 134, 136 while the heating medium introduced from a heating medium inlet 148B is divided to flow to holes 142, 140, 138, 136. The heating medium divided to flow to the respective holes flows through a traverse hole 146 to issue to the outside of a mold from outlets 150A, 150B. Therefore, the number of half molds 156 through which the heating medium in the respective passages pass is reduced and the shift of heat response between the first and final half molds in the respective passages is reduced. By this constitution, when the mold is heated or cooled, the temp. difference generated between the half mold provided on the most upstream side of the heating medium passage and the half mold provided on the most downstream side thereof can be reduced. |
