Heatronic preheating method

Abstract

Abstract PURPOSE: To avoid a risk of overvulcanization and perform suitable vulcanization, by heateronically heating an unvulcanized product intermittently within a temperature range not inducing vulcanization until the unvulcanized product reaches a prescribed preheating temperature. CONSTITUTION: In a heating chamber 1 is arranged a turntable 2 rotatable during heating on which a raw tire 3 is put with its axis vertically aligned, and adjacent to both sides of the raw tire 3 are positioned UHF radiation horns 4, 4' that are communicated through waveguides 5 with a UHF generator 6. To the generator 6 are connected the first fimer 7, the second timer 8, and the third timer 9 for controlling intermittent radiation, and the timers, after their respective set periods have expired, are interacted serially by limit switches. Period for the intermittent radiation is preferably selected to be a period necessary to elevate a temperature in the chamber 1 to slightly below 100°C. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Toshio Arimatsu
• 👤 Kunio Nishimura

Bibliographic Details