| 摘要 |
PROBLEM TO BE SOLVED: To keep the reduction in heat loss, responsiveness of temperature control, and controllability to a minimum, exert both of heating function and cooling function sufficiently, and avoid the unnecessary increase in the scale of molding equipment and the reduction in space efficiency.SOLUTION: When a heating device is constituted which has one or more heaters 4n, 4a, 4b, 4c, and 4d which are attached to outer circumferential surfaces 2f and/or 3f of a heat cylinder 2 and/or an injection nozzle 3 to heat the heat cylinder 2 and/or the injection nozzle 3, a part or all of the heaters 4a... in the one or more heaters 4n, 4a... are constituted as air-cooling heaters 4as... in which a panel member 5... formed by a material R having heat transfer property is interposed between the heater 4a... and the outer circumferential surface 2f (3f) of the heat cylinder 2 (and/or the injection nozzle 3), an air passage 6... for air cooling is formed in the panel member 5..., and an air entrance part 8... allowing the circulation of air A... from an air supply part 7 to the air passage 6 is provided.SELECTED DRAWING: Figure 1 |
