| 摘要 |
PURPOSE: A gas discharge structure of a screw cylinder for an injection molding machine is provided to maximize gas exhaust of a transferring unit and extruding unit because vent rings are installed at constant intervals from a maximum backward point of a transfer screw. CONSTITUTION: A gas discharge structure of a screw cylinder for an injection molding machine comprises joining holes(12) and a plurality of vent rings(50). The joining holes are formed at intervals wider than 10mm from a maximum backward point of a transfer screw in a housing(10). The plurality of the vent rings installed in the inner side of the joining holes guides gas exhaustion to outside. |
