| 摘要 |
PURPOSE:To improve cooling effect and to simplify structure by a method wherein a mold temperature is detected, cooling medium is supplied directly from a cooling medium source or cooling medium that has been supplied already is heated to be used as heating medium. CONSTITUTION:The liquid outlet 1' of a mold 1 and a cooling medium source 2 are connected through a liquid supply pipe 3 to provide a heater 8 and a liquid supply pump 9. A discharge outlet 1'' and a cooling medium source 2 are connected through a discharge pipe 6 to provide an electromagnetic change-over valve 4. A check valve 16 is provided on a branch pipe 6', a thermometer 10 is provided on one of (a), (b), (c) and the output terminal is connected with electromagnetic switches 12, 13 through a temperature adjuster 11. When the temperature of the mold exceeds the prescribed temperature, the cooling medium is supplied directly to the mold 1 through the liquid supply pipe 3. When the temperature of the mold does not exceed the prescribed temperature, supply of fresh cooling medium is hindered and the cooling medium that has been supplied already is heated by the heater 8 to be supplied to the mold. |
