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    • 1. 发明授权
    • Ball mandrel apparatus and method
    • 球心轴装置及方法
    • US6106273A
    • 2000-08-22
    • US149338
    • 1998-09-08
    • Gregory S. O'Dell
    • Gregory S. O'Dell
    • B29C49/06B29C49/42B29C31/08
    • B29C49/4205B29C49/06
    • A mandrel assembly for holding a preform, including a mandrel having a collar for locating within an interior surface defined by a finish portion of the preform, a plurality of preform guides pivotably mounted to the mandrel for generally radial movement and contact with the interior surface, a plurality of resilient members for biasing the preform guides for contact against the interior surface with a preselected frictional force, so that the preform may be held by the mandrel against forces less than the preselected frictional force and the preform is capable of movement relative to the mandrel upon application of forces greater than the preselected frictional force, each resilient member attached to the mandrel and bearing against and biasing at least one of the preform guides for rotation generally radially outward. A method for holding a reorienting a preform, including engaging the finish portion with the mandrel so that the finish portion generally surrounds the collar, biasing preform guides for generally radial movement outward from the collar to bear against the interior surface with a preselected frictional force, rotating the preform with respect to the mandrel so that the preform guides are in sliding contact with the interior surface, applying a force greater than the preselected frictional force to the preform until the preform is oriented at a desired position, and holding the preform at the desired position by frictional contact of the preform guides against the interior surface.
    • 一种用于保持预成型件的心轴组件,包括具有用于定位在由预成型件的精加工部分限定的内表面内的轴环的心轴;多个预成型件引导件,其可枢转地安装到心轴上以大致径向移动并与内表面接触, 多个弹性构件,用于偏压预成型件引导件,以预选的摩擦力与内表面接触,使得预制件能够被心轴保持,防止力小于预选的摩擦力,并且预成型件能够相对于 在施加大于预选摩擦力的力的情况下,每个弹性构件连接到心轴并且抵靠并偏压至少一个预成型件引导件以大致径向向外旋转。 用于保持重新定向预成型件的方法,包括使精加工部分与心轴接合,使得精加工部分大致围绕套环,偏压预制件引导件,用于大致径向地从套环向外移动,以预选的摩擦力抵靠内表面, 使预成型件相对于心轴旋转,使得预成型件引导件与内表面滑动接触,向预成型件施加大于预选摩擦力的力,直到预制件定位在期望位置,并将预制件保持在 通过预成型件引导件相对于内表面的摩擦接触而使所需的位置。