Patent ID: 7416694
Filing Date: 2008-08-26
Classification: B29C,B29D,B29L,Y10T

Abstract:
1. A raw tire preheating method for preheating a raw tire including metal members embedded therein, comprising: retaining said raw tire in a predetermined attitude in a releasable manner with retaining means; preheating said metal members inductively by means of a high frequency magnetic field induction heating means; employing a plurality of radiation heaters to simultaneously transmit radiative heat towards at least two portions of the raw tire embedded with one of said metal members and at least another two portions of the raw tire embedded with another one of said metal members, said at least two portions and said at least another two portions being induced to generate heat lower than other portions of the raw tire embedded with said one of said metal members so as to heat said raw tire evenly, said at least two portions being end portions of a tread portion of the raw tire and said at least another two portions being bead portions of the raw tire; and coordinating with a controller said induction heating means and said radiation heaters to heat said raw tire evenly.