| 摘要 |
PURPOSE:To cool the inside of a mold uniformly by carrying out computation using a computating formula set preliminarily for the temperature of cooling water fed to the inside of a mold, and then controlling plus and minus of setting time of a timer for setting the cooling time and cooling the mold. CONSTITUTION:Cooling water is fed from cooling water pipes 7 and 8 of both molds by opening and closing cooling water valves 71 and 81 and jetting out of spray nozzles 72 and 82 and cooled by water drops adhered to molds 1 and 2. The inlet temperature of cooling water is sensed by temperature sensors 17 and 18 provided in the cooling water tubes 7 and 8, and computation is carried out by using the given computating formula at a data processing section 20 of a computer unit including an A/D converter 15 which imputs sensed signals as analog signals by converting the same into digital signals and a sequensor 16. After that, the setting time of a timer 10 for setting the cooling time is controlled automatically and cooling of the mold can be carried out, and water drops are adhered to the mold, and the mold can be cooled uniformly by the evaporation latent heat of said water drops. |
