| 摘要 |
PURPOSE:To easily form an emitted parison into a desired bent shape by blowing compressed gas to a parison held to a pinched state from a plurality of nozzles spaced apart from the parison in the axial direction of the parison to bend the parison into a desired shape. CONSTITUTION:A compressed gas blowing device 34 capable of blowing compressed gas in the axial direction of a pinched parison 12 is arranged in the direction crossing both molds 1a, 1b at a right angle so as to be spaced apart from the parison 12 by a definite distance. The valves 36 of the compressed gas blowing device are opened in such a state that the parison 12 is pinched by upper and lower parison pinching devices to blow compressed gas to the parison 12 from compressed gas blowoff nozzles 35. By this constitution, the parison 12 is bent into a recessed part shape in a state sealed with pre-blowing air. Thereafter, the bent parison is fitted in both molds 1a, 1b having cavity surfaces 2 formed into a spoiler shape and the molds are clamped to stop the blowing-off of compressed air and high pressure compressed air is blown into the parison from a blow pin 8. |
