To provide an induction heating device for a cylinder of a molding machine which is capable of efficiently heating corresponding to a temperature characteristic of a raw material to be used while avoiding an excessive temperature rise.
An induction heating device 1 comprises a high efficiency heating member 10 for efficiently heating a cylinder 31 and an excessive temperature rise preventing member 20 for heating the cylinder 31 to avoid an excessive temperature rise. The high efficiency heating member 10 is provided with a heat insulating material 11 covering the outer circumferential surface of the cylinder 31 over the whole and a first induction heating coil 12 wound around the outside of the heat insulating material 11. The excess temperature rise preventing member 20 is provided with a second induction heating coil 21 wound around the cylinder 31 and a pressing plate 22 pressing the second induction heating coil 21 from the outside.
ITO TAIZO
TERAMURA TERUYUKI
HIRAKAWA MANABU
GOTO TAKASHI
NANBU PLASTICS CO LTD
ITO KOKI KK
| JPH10180827A | 1998-07-07 | |||
| JPH06335954A | 1994-12-06 | |||
| JP2003071893A | 2003-03-12 | |||
| JP2007093217A | 2007-04-12 |
| WO2005046962A1 | 2005-05-26 |