| 摘要 |
PURPOSE:To provide a device for injecting/discharging a pressurized fluid, which is free from a fear of blockade by molten resin, the injected pressurized fluid is guided favorably into the molten resin and discharge of the pressurized fluid left behind within a hollow part of a molded body can be performed in a short time. CONSTITUTION:The title device is related to a device which is made to perform injection and discharge of the pressurized fluid through a pressurized fluid passage 3 to be formed of an inner wall of a sleeve 1 which is provided by making the tip open in a spatial part of an injection mold and a shaft core 2 which is inserted through the inside and advance and retreat are made possible in the axial direction. Therefore. the injecting or discharge device has a structure wherein a specific shaft core 2 comprised of a core body 21 and collar 22 is used, the pressurized fluid passage can be adjusted by allowing the tip part 21a of the core body 21 to perform the advance or the retreat within a specific range of a passage 3 and at the same time, the pressurized fluid passage can be closed released by making the front of the collar 22 to abut against separate from the rear of a flange part 12 of a sleeve 1. |
