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    • 10. 发明授权
    • Motor-driven vertical type injection molding apparatus
    • 电动立式注塑机
    • US5393210A
    • 1995-02-28
    • US270804
    • 1994-07-05
    • Shozo KasaiYozo TohboNorio NikaidoHirofumi Sugawara
    • Shozo KasaiYozo TohboNorio NikaidoHirofumi Sugawara
    • B29C45/03B29C45/50B29C45/58B29C45/76B29C45/77
    • B29C45/5008B29C45/76B29C2045/5032
    • A motor-driven vertical type injection molding apparatus with stable screw back pressure is provided with a simple structure. A plurality of guide shafts extending in the perpendicular direction are integrally provided in a lower base of an injection unit. A screw holding member is supported on the plurality of guide shafts to be movable in the perpendicular direction. The screw holding member is moved in the perpendicular direction by an injection motor through a ball screw mechanism. A screw extension shaft is integrally connected to the upper end of a screw. The screw extension shaft is supported on the screw holding member to be movable in the axial direction and rotatable. The screw extension shaft and screw are rotated by a measuring motor. In a measuring step, the dead weight of the screw holding member automatically resists the reactive force (screw back pressure) of a molten resin at a screw tip end portion.
    • 具有稳定的螺旋背压的电动立式注射成型装置具有简单的结构。 沿着垂直方向延伸的多个引导轴一体地设置在注射单元的下部基部中。 螺钉保持构件被支撑在多个引导轴上以能够在垂直方向上移动。 螺杆保持构件通过注射马达通过滚珠丝杠机构在垂直方向上移动。 螺钉延伸轴与螺钉的上端一体地连接。 螺杆延伸轴支撑在螺钉保持构件上,以可沿轴向移动并且可旋转。 螺丝延长轴和螺丝由测量电机旋转。 在测量步骤中,螺钉保持构件的自重自动抵抗螺纹前端部分处的熔融树脂的反作用力(螺旋背压)。