| 摘要 |
[PROBLEMS] To improve cooling efficiency and reduce a burden on a negative pressure generation mechanism. [MEANS FOR SOLVING PROBLEMS] When a suction pump (VP) is operated, a negative pressure is generated in a feeding side pipe line (4), a cooling path (2a) of a mold (2), and a return side pipe line (5). Cooling water contained in a water containing tank (3) is sucked by the negative pressure to flow out from a first water feeding opening (3a) to the feeding side pipe line (4) and enters into the cooling path (2a) of the mold (2) after flowing through the feeding side pipe line (4). The cooling water cools the mold (2) while flowing in the cooling path (2a) of the mold (2) and then flows out into the return side pipe line (5). On the other hand, the operation of the suction pump (VP) causes a negative pressure to be generated also in a bypass pipe line (6). the cooling water contained in the water containing tank (3) is sucked by this negative pressure to flow out from a second water feeding opening (3b) to the bypass pipe line (6) and then enters into the return side pipe line (5) after passing through the bypass pile line (6). |
