INDUCTION HEATING METHOD FOR MANIFOLD OF HOT RUNNER METAL MOLD AND COIL DEVICE FOR INDUCTION HEATING

摘要

An induction heating method for a manifold of a hot runner metal mold having a fixed metal mold and a movable metal mold capable of uniformly heating a material over the entire length of a runner and also capable of easily attaching and detaching a coil from the manifold, comprising the steps of providing a space along a side face (10b) onto which a mold clamping pressure by the fixed metal mold and the movable metal mold does not act, winding the coil (17), in the space, on the side face (10b) along the axis of the runner of the manifold (10), and induction-heating the manifold (10) from the side face (10b).