TEMPERATURE CONTROL METHOD OF MOLD

To provide a temperature control method of a mold capable of keeping the temperature of the entire mold uniform even if the cycle time is variable.SOLUTION: A fixed mold 200 and a movable mold 300 include respectively: cavity side heating mechanisms 20 and 60 for heating the vicinity of a cavity 100a; cavity side temperature sensors 30 and 70 for measuring temperature in the vicinity of the cavity 100a; outer periphery side heating mechanisms 40 and 80 for heating the vicinity of an outer periphery of a mold 100; and outer periphery side temperature sensors 50 and 90 for measuring the temperature in the vicinity of the outer periphery, respectively. A temperature control method of the mold includes: when a cycle time of molding is fast, stopping the cavity side heating mechanisms 20 and 60 while operating the outer periphery side heating mechanisms 40 and 80 and when the temperature in the vicinity of the cavity 100a becomes less than a predetermined value, operating the cavity side heating mechanisms 20 and 60; and when the cycle time of casting is slow, operating both the cavity side heating mechanisms 20 and 60 and the outer periphery side heating mechanisms 40 and 80.SELECTED DRAWING: Figure 1 【課題】サイクルタイムが可変であっても金型全体の温度を均一に保つことができる金型の温度制御方法を提供する。【解決手段】固定型２００及び可動型３００は、キャビティ１００ａ近傍を加熱するキャビティ側加熱機構２０，６０と、キャビティ１００ａ近傍の温度を測定するキャビティ側温度センサー３０，７０と、金型１００の外周部近傍を加熱する外周部側加熱機構４０，８０と、前記外周部近傍の温度を測定する外周部側温度センサー５０，９０と、をそれぞれ有し、鋳造のサイクルタイムが速い場合、キャビティ側加熱機構２０，６０を停止すると共に外周部側加熱機構４０，８０を動作させ、キャビティ１００ａ近傍の温度が所定未満になるとキャビティ側加熱機構２０，６０を動作させ、鋳造のサイクルタイムが遅い場合、キャビティ側加熱機構２０，６０及び外周部側加熱機構４０，８０をいずれも動作させる、金型の温度制御方法。【選択図】図１