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    • 3. 发明申请
    • Apparatus for placing mold charges in a compression molding machine
    • 将模具放置在压缩成型机中的装置
    • US20070264380A1
    • 2007-11-15
    • US11431797
    • 2006-05-10
    • Wendell WillinghamDaniel MatticeDavid ThompsonB. Rote
    • Wendell WillinghamDaniel MatticeDavid ThompsonB. Rote
    • B29C43/50B29C43/34
    • B29C43/34B29C31/048B29C31/065
    • An apparatus for placing mold charges into a mold of a compression molding machine includes at least one mold charge pick-up cup for receiving a severed charge of molten plastic, a vacuum source for applying a vacuum to the pick-up cup to retain the mold charge in the cup, and a source of gas (such as air) under pressure for periodically applying gas to the cup to release the mold charge from the cup. In one exemplary embodiment, the vacuum source applies a continuous vacuum to the cup, and the source of gas under pressure periodically applies gas to the cup to overcome the continuous vacuum at the cup. In another exemplary embodiment, vacuum and gas under pressure, are alternately applied to the cup. The vacuum source preferably includes a vacuum generator coupled to the source of gas under pressure for generating the vacuum to be applied to the cup. The vacuum source preferably includes a vacuum pump coupled to the source of gas under pressure for generating the vacuum to be applied to the cup. The source of gas under pressure preferably includes a valve for periodically applying gas under pressure to the cup. The apparatus preferably includes a carrier for moving the cup from a source of severed charges of molten plastic to the mold of the compression molding machine, with the cup, the vacuum pump and the valve preferably being mounted on the carrier. The vacuum source preferably includes a vacuum limiter that also is mounted on the carrier.
    • 一种用于将模具电荷放置到压缩成型机的模具中的装置包括至少一个用于接收熔融塑料的断开装料的模具充电拾取杯,用于将真空施加到拾取杯以保持模具的真空源 在杯中充电,以及在压力下的气体源(例如空气),用于周期性地向杯子施加气体以从杯中释放模具装料。 在一个示例性实施例中,真空源对杯施加连续的真空,并且在压力下的气体源周期性地将气体施加到杯子以克服杯子处的连续真空。 在另一示例性实施例中,在压力下的真空和气体交替地施加到杯子。 真空源优选地包括在压力下耦合到气体源的真空发生器,用于产生要施加到杯子的真空。 真空源优选地包括在压力下耦合到气体源的真空泵,用于产生要施加到杯子的真空。 在压力下的气体源优选地包括用于在压力下周期性地将气体施加到杯子的阀。 该装置优选地包括用于将杯从熔融塑料的切断装料的源移动到压缩成型机的模具的载体,杯,真空泵和阀优选地安装在载体上。 真空源优选地包括也安装在载体上的真空限制器。
    • 5. 发明授权
    • Cam mechanism with side action for compression molding process
    • 用于压缩成型工艺的副作用的凸轮机构
    • US06416312B1
    • 2002-07-09
    • US09324405
    • 1999-06-02
    • Heinz O. GonserXiaoli MaWendell Willingham
    • Heinz O. GonserXiaoli MaWendell Willingham
    • B29C4342
    • B29C43/42B29C43/361B29C43/50B29C2043/3288B29C2043/5015B29L2001/00B29L2031/712Y10S425/005Y10S425/058Y10S425/247
    • A compression molding apparatus includes a female mold half which receives a charge of molten plastic and a cooperating male plunger which compression molds the molten plastic into an article within the female mold half. A slide mold part is located between the male plunger and the female mold half. The slide mold part includes left and right slide mold halves which when brought into juxtaposition, define a central mold space. The left and right mold halves are slidable toward and away from each other, to form the central mold space and to open the central mold space respectively. The male portion is reciprocated downwardly to undertake the compression molding, and a cam mechanism is activated by the reciprocation to close the slide mold part during compression molding. The return stroke opens the slide mold part to allow removal of the molded article without stripping or unscrewing the molded article from the slide mold part. In an exemplary embodiment, a bottle-like container is formed by compression molding which includes a neck having an external thread. The external thread is formed in the central mold space of the slide mold part. The cam mechanism is arranged to open the slide mold part to release the threaded neck of the container for removal from the mold apparatus.
    • 压缩成型装置包括:阴模半部,其接收熔融塑料的电荷;以及配合的阳柱塞,其将熔融塑料压缩成阴模半部内的制品。 滑动模具部分位于阳柱塞和阴半模之间。 滑动模具部件包括左右滑动半模,当并置时,其形成中心模具空间。 左半模和右半模能够相互朝向和远离地滑动,以形成中心模具空间并分别打开中心模具空间。 阳部向下往复运动以进行压缩成形,并且通过往复运动来激活凸轮机构,以在压缩成型期间闭合滑动模具部件。 返回行程打开滑动模具部件,以允许去除模制品而不从模具部件剥离或松开模制品。 在一个示例性实施例中,通过压缩成型形成瓶状容器,其包括具有外螺纹的颈部。 外螺纹形成在滑动模具部件的中心模具空间中。 凸轮机构被布置成打开滑动模具部分以释放容器的螺纹颈部以从模具装置移除。