| 摘要 |
PURPOSE:To save the mold vulcanizing time, and enable an excellent rubber structure to be obtained by vulcanizing the rubber from the inner and outer part of the rubber in filling the air heated to a raw rubber-vulcanizing temperature into the hollow part provided on the inner part of a tire. CONSTITUTION:A nozzle 23 is installed on the table 39 of a lower mold 11 such that the tip of an exhaust pipe 23c of the nozzle 23 is situated at the hollow part 108 of a semi-split tire, and position fitting pins 38 of an upper mold 12 are made to fit into the holes of the lower mold 11, and a coming up and down frame 6 is moved upward by actuating a hydraulic device 8 up to the position wherein the upper mold 12 and lower mold 11 are brought into close contact with each other. By operating the valve 24' of a pipe 24, steam of 140-200 deg.C of temperature and 12kg/cm<2> in the pressure is exhausted from the tip of the nozzle 23. Through this manner, the tire is vulcanized from the outside thereof at the heat (the temperature of 140-200 deg.C) of the lower mold 11 and upper mold 12, and also vulcanized from the inside thereof by the steam of 140-200 deg.C spouted by the nozzle 23, so that the whole of the tire is vulcanized in 5-10 minutes. |
