Moving apparatus of pressurized fluid inlet nozzle for pressurized fluid introduction device, injection molding process and mold assembly

摘要

PROBLEM TO BE SOLVED: To provide a pressurized fluid introducing device having a simple structure.;SOLUTION: The pressurized fluid introducing device 20 consists of (A) a pressurized fluid introducing nozzle 21 having an opening part 24 provided to its leading end 22 and (B) a moving device 30 having the rear end 23 of the pressurized fluid introducing nozzle 21 attached thereto and communicating with the pressurized fluid introducing nozzle 21 to move the same forwardly and rearwardly and is constituted so as to introduce the pressurized fluid into the molten thermoplastic resin injected in the cavity 13 provided to a mold 10 to mold an injection-molded product having a hollow part. When the pressurized fluid is introduced into the molten thermoplastic resin injected in the cavity through the moving device 30 and the pressurized fluid introducing nozzle 21, the pressurized fluid introducing nozzle 21 is positioned at an advance end by the operation of the moving device 30 based on the pressure added by the pressurized fluid.;COPYRIGHT: (C)2003,JPO