METHOD AND DEVICE FOR ELECTROMAGNETIC INDUCTION HEATING FOR CYLINDRICAL MOLD

摘要

PROBLEM TO BE SOLVED: To provide an electromagnetic induction method for heating a cylindrical mold for manufacturing a belt in a short time and uniformly heating the whole of the mold. SOLUTION: In an electromagnet induction heading method, a flux (x) generated by applying an alternate current to an electromagnetic induction coil 1 disposed around a cylindrical mold 2 for manufacturing belts is induced in the length direction of the cylindrical mold 2 to heat the cylindrical mold 2. In that case, columnar magnetic permeable dummy bodies 3 and 4 are set on both ends of the cylindrical mold 2 to converge the flux (x) into the cylindrical mold 2 and induce so as to uniformize the density of the flux (x) from one end to the other end of the cylindrical mold 2.