Heating Unit, Tire Heating Apparatus, and Method for Remodeling Tire Mold
First Claim
1. A heating unit for heating a tire mold for storing a tire, comprising:
- a ferromagnetic metallic member for heating said tire mold by heat conduction;
an induction heating coil disposed on a side of said ferromagnetic metallic member opposite said tire mold, which induction-heats said ferromagnetic metallic member by generating magnetic field lines;
a nonmagnetic conductor disposed on a side of said induction heating coil opposite said ferromagnetic metallic member, which shields the magnetic field lines generated by said induction heating coil; and
positioning means for setting a relative positional relationship among said nonmagnetic conductor, said induction heating coil, and said ferromagnetic metallic member.
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Accused Products
Abstract
The present invention provides a heating unit capable of easily and inexpensively adjusting total impedance based on tire mold size so that a power source can be used at a high power factor, and a tire heating apparatus using the same. A ferromagnetic metallic member 10a heats a tire mold M1 by heat conduction. An induction heating coil C1 is disposed on the side of the ferromagnetic metallic member 10a opposite the tire mold M1 to induction-heat the ferromagnetic metallic member 10a by generating magnetic field lines. A nonmagnetic conductor 30a is disposed on the side of the induction heating coil C1 opposite the ferromagnetic metallic member 10a to shield the magnetic field lines generated by the induction heating coil C1. A heating unit 100a including these elements heats the tire mold M1 storing a tire. A relative positional relationship among the nonmagnetic conductor 30a, the induction heating coil C1 and the ferromagnetic metallic member 10a is set by first spacers 71a and 72a and second spacers 21a to 23a.
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Citations
11 Claims
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1. A heating unit for heating a tire mold for storing a tire, comprising:
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a ferromagnetic metallic member for heating said tire mold by heat conduction; an induction heating coil disposed on a side of said ferromagnetic metallic member opposite said tire mold, which induction-heats said ferromagnetic metallic member by generating magnetic field lines; a nonmagnetic conductor disposed on a side of said induction heating coil opposite said ferromagnetic metallic member, which shields the magnetic field lines generated by said induction heating coil; and positioning means for setting a relative positional relationship among said nonmagnetic conductor, said induction heating coil, and said ferromagnetic metallic member. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A tire heating apparatus, comprising:
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a tire mold for storing a tire; and two sets of said heating units comprising a ferromagnetic metallic member for heating said tire mold by heat conduction;
an induction heating coil disposed on a side of said ferromagnetic metallic member opposite said tire mold, which induction-heats said ferromagnetic metallic member by generating magnetic field lines;
a nonmagnetic conductor disposed on a side of said induction heating coil opposite said ferromagnetic metallic member, which shields the magnetic field lines generated by said induction heating coil; and
positioning means for setting a relative positional relationship among said nonmagnetic conductor, said induction heating coil, and said ferromagnetic metallic member, wherein said heating unit includes, as said positioning means, a first spacer for setting a distance between said nonmagnetic conductor and said induction heating coil, or wherein said heating unit includes, as said positioning means, a second spacer for setting a distance between said ferromagnetic metallic member and said induction heating coil, or wherein said heating unit further includes a heat insulating member provided between said induction heating coil and said ferromagnetic metallic member, or wherein said heating unit further includes a ferromagnetic nonconductive member provided between said nonmagnetic conductor and said induction heating coil, or wherein said nonmagnetic conductor is aluminum, or wherein said ferromagnetic metallic member is a steel-made member having magnetic permeability of 100 to 1000, which are vertically disposed opposite each other across said tire mold, whereinsaid two heating units heating said tire mold from both upper side and lower side of said tire mold.
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9. A tire heating apparatus, comprising:
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said heating unit comprising a ferromagnetic metallic member for heating said tire mold by heat conduction;
an induction heating coil disposed on a side of said ferromagnetic metallic member opposite said tire mold, which induction-heats said ferromagnetic metallic member by generating magnetic field lines;
a nonmagnetic conductor disposed on a side of said induction heating coil opposite said ferromagnetic metallic member, which shields the magnetic field lines generated by said induction heating coil; and
positioning means for setting a relative positional relationship among said nonmagnetic conductor, said induction heating coil, and said ferromagnetic metallic member, wherein said heating unit includes, as said positioning means, a first spacer for setting a distance between said nonmagnetic conductor and said induction heating coil, or wherein said heating unit includes, as said positioning means, a second spacer for setting a distance between said ferromagnetic metallic member and said induction heating coil, or wherein said heating unit further includes a heat insulating member provided between said induction heating coil and said ferromagnetic metallic member, or wherein said heating unit further includes a ferromagnetic nonconductive member provided between said nonmagnetic conductor and said induction heating coil, or wherein said nonmagnetic conductor is aluminum, or wherein said ferromagnetic metallic member is a steel-made member having magnetic permeability of 100 to 1000; anda tire mold composed of a plurality of split segments and having an annular hole internally formed, wherein said annular hole being filled with a filling material having high thermal diffusivity.
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10. A tire heating apparatus, comprising:
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a tire mold having an annular hole internally formed to encapsulate heating steam; and a heating mechanism for heating said tire mold by heat conduction, wherein said annular hole being filled with a filling material having high thermal diffusivity, and said tire mold being heated by said heating mechanism.
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11. A remodeling method of a tire mold having an annular hole internally formed to encapsulate heating steam, comprising the steps of:
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filling the annular hole with a filling material having high thermal diffusivity; installing a heating mechanism for heating the tire mold by heat conduction; and heating the tire mold by the heating mechanism.
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Specification