Parison length control method for blow molding machine
    2.
    发明授权
    Parison length control method for blow molding machine 失效
    吹塑机型号长度控制方法

    公开(公告)号:US5399302A

    公开(公告)日:1995-03-21

    申请号:US995202

    申请日:1992-12-22

    摘要: A parison length control method for a blow molding machine in which a parison is extruded vertically, the end of the parison is closed, and a blowing gas is blown into the closed parison. The method includes the step of deriving a relationship between parison length and extruder screw rotation speed during a test molding process. Current parison length is then detected during normal molding operation, and the difference between the current parison length and a target parison length is derived. The extruder screw rotation speed is then controlled by calculating a correction amount for the extruder screw rotation speed based on the parison length difference in combination with the relationship between parison length and extruder screw rotation speed. The extruder screw rotation speed is then adjusted by the correction amount so as to attain the target parison length.

    摘要翻译: 一种用于吹塑机的型坯长度控制方法,其中型坯被垂直挤出,型坯的端部被关闭,并且吹送气体被吹入密闭型坯中。 该方法包括在测试成型过程中得出型坯长度与挤出机螺杆旋转速度之间的关系的步骤。 然后在正常模制操作期间检测当前型坯长度,并导出当前型坯长度和目标型坯长度之间的差异。 然后通过根据型坯长度差与型坯长度和挤出机螺杆旋转速度的关系计算挤出机螺杆转速的校正量来控制挤出机螺杆转速。 然后通过校正量调节挤出机螺杆转速,以获得目标型坯长度。