Sealant applicator and method for an automatic fastener machine
    10.
    发明授权
    Sealant applicator and method for an automatic fastener machine 失效
    自动紧固机的密封剂涂布器和方法

    公开(公告)号:US4951849A

    公开(公告)日:1990-08-28

    申请号:US251901

    申请日:1988-09-30

    Abstract: An applicator for applying a fluid substance to a drilled hole as part of an automatic fastening machine. The fastener machine drills the hole in the workpiece, such as an aircraft wing panel, and then the substance applicator applies the substance to the hole, prior to subsequent installation of the fastener within the hole. The substance applicator, which is connected to a movable pressure foot, is pneumatically operated so that a head portion of the applicator is extended laterally over the hole, and a tip assembly in the head is extended vertically downward toward the hole. This operational sequence is accomplished by means of variable rate springs which bias the tip assembly and base to retracted positions. The substance is delivered to the tip assembly from a storage reservoir by means of a peristaltic pump. Positive shutoff of the substance to the tip assembly is achieved by a pivotally mounted shutoff arm assembly. When one end of the shutoff arm is engaged and elevated by the retracted head, the opposite end of the arm is depressed against the compressible tube to pinch off the sealant flow therethrough.

    Abstract translation: 一种将流体物质作为自动紧固机的一部分施加到钻孔上的施加器。 紧固件机器钻出工件中的孔,例如飞机机翼板,然后物件施加器将物质施加到孔中,然后将紧固件安装在孔内。 连接到可移动压脚的物质施用器被气动地操作,使得施加器的头部横向延伸穿过孔,并且头部中的尖端组件垂直向下延伸到孔。 该操作顺序通过可变速率弹簧来实现,该弹簧将尖端组件和底座偏压到缩回位置。 该物质通过蠕动泵从储存容器输送到尖端组件。 通过枢转安装的关闭臂组件实现物体到尖端组件的正向切断。 当关闭臂的一端通过缩回的头部接合和升高时,臂的相对端被压靠在可压缩的管上以夹紧通过其的密封剂流动。

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