| 摘要 |
PROBLEM TO BE SOLVED: To improve cooling efficiency and reduce a burden on a negative pressure generation mechanism. SOLUTION: 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. While, 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 pipe line 6. COPYRIGHT: (C)2007,JPO&INPIT
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