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    • 2. 发明授权
    • Press with swingable top press plate
    • 用可摆动的顶部压板按压
    • US6113382A
    • 2000-09-05
    • US39920
    • 1998-03-16
    • Douglas J. McNally
    • Douglas J. McNally
    • B29C33/20B29C33/28B29C43/00B29C33/26B29C45/64
    • B29C33/28B29C33/20B29C33/202B29C2033/205B29C2033/207B29C2037/90B29C43/00
    • A mold press for an electric drive arrangement for controlling opening and closing press movement. The drive arrangement includes a pair of generally identical drive units connected between upper and lower press plates. The drive units in a preferred embodiment each employ a ball-screw arrangement. A screw shaft extends vertically of the press, and engages a ball nut assembly which is mounted on the top press plate for effecting movement thereof toward and away from the bottom press plate. An electric motor is coupled to the screw shafts for effecting high speed opening and closing movement of the top press plate. A force apply device, such as an inflatable hose or bladder, is associated with the bottom press plate to effect application of the desired press closing force. A control linkage is connected between the top press plate and the frame for effecting automatic sideward swinging of the top press plate between a side access position when the plate is in its fully opened position, and an operational position wherein the top press plate is disposed vertically aligned above but spaced upwardly from the lower press plate. The swinging movement of the top press plate between these two positions is effected automatically in response to vertical displacement of the top press plate by the main drive unit during an upper portion of the normal opening and closing movement of the top press plate. This control linkage, in a preferred embodiment, comprises a self-contained extendible spring device such as an air spring which effectively assumes a minimum height position when the top press plate is intermediate its stroke so as to induce sideward swinging of the top press plate during the upper portion of the stroke.
    • 一种用于控制打开和关闭按压运动的电驱动装置的模压机。 驱动装置包括连接在上压板和下压板之间的一对大致相同的驱动单元。 优选实施例中的驱动单元均采用滚珠丝杠装置。 螺杆轴垂直于压机延伸,并与一个安装在顶部压板上的滚珠螺母组件接合,以实现其向底部压板的移动。 电动机与螺杆轴联接,以实现顶压板的高速打开和关闭运动。 诸如充气软管或气囊的施力装置与底部压板相关联以实现所需的压力关闭力。 控制联动装置连接在顶压板和框架之间,用于在板处于其完全打开位置的侧面进入位置与上压板垂直设置的操作位置之间实现顶压板的自动侧向摆动 在下压板上方但是向上隔开。 顶压板在这两个位置之间的摆动运动在上压板的正常打开和关闭运动的上部期间响应于主压板由主驱动单元的垂直位移而自动进行。 在优选实施例中,该控制联动装置包括一个独立的可延伸的弹簧装置,例如空气弹簧,当顶压板处于其行程中间时,空气弹簧有效地呈现最小的高度位置,以便在顶压板期间引起顶压板的侧向摆动 笔画的上部。