| 摘要 |
PURPOSE:To shorten the injection molding period so as to improve the productivity, by holding a parison, that is taken out from an injection mold, in an air atmosphere whose temperature is adjusted to a prescribed temperature, and then regulating the parison to a stretch blow molding temperature in a parison heating furnace. CONSTITUTION:At the same time when the injection top force 12 is raised, a moving table 16 is moved from a temperature adjusting section 6 by an air cylinder 20 to below the force 12. Then the parison 24 is ejected, is supported by a support opening 26 and is returned to the position of the temperature adjusting section 6 again. Air adjusted to a prescribed temperature is spouted from a spouting pipe 32 so that the inside of a cylindrical member 28 is filled with the air having the prescribed temperature to adjust the temperature of the parison. Thus since the every part of the parison 24 has been equalized with respect to the temperature before it is introduced into the heating furnace 38, it is not required that it is cooled to minimize the unevenness of the temperature, and therefore the period of the cycle can be shortened to improve the productivity. |
