| 摘要 |
A collar for reducing or eliminating leakage between components, which move with respect to each other in the field of injection molding. The collar has an outer portion for receiving an inner portion. The outer portion has a tapered or partial spherical surface on its inside diameter, and the inner portion has a tapered or partial spherical surface on its outside diameter. In the preferred embodiment, the inner portion of the collar is operatively assembled into a cavity of the outer portion of the collar, such that the tapered surface of the inner portion is slidably mounted to the tapered surface of the outer portion. The collar is operatively mounted around the outside diameter or circumference of a cylindrical device and between two components that move with respect to each other. Springs, discs, cylinders or other device are used to create an axial force AF between the components, which move with respect to each other. In order to facilitate movement between the components, a clearance is provided between the components. To avoid leakage or weepage from exiting the clearance, the collar and springs are incorporated between the components. The collar is designed to receive the axial force AF and redirect at least a portion of the axial force AF to a radial force RF. This radial force RF acts on an inner portion of the collar forcing the inner portion tightly into engagement with one of the two components, thereby sealing off the clearance or an area adjacent the clearance where leakage or weepage may occur.
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