METHOD AND APPARATUS FOR CAPPING VIALS

摘要

An apparatus for centering and gripping an object comprises: a main stage rotatable via a drive unit about a first axis of rotation and a plurality of centering members. The centering members are rotatable about parallel axes of rotation. Rotation of the centering members causes the centering members to contact an object positioned on the main stage. A central sun gear rotates with the main stage about the first axis. Each of the centering members is connected to and rotatable with a respective centering member gear which is driven by the sun gear which is coupled to a drive unit via a clutch. When the centering members are free to rotate relative to the main stage, the clutch engages the sun gear. When the centering members are prevented from rotating, the sun gear rotates with the main stage.