| 摘要 |
A core adapter is provided for adapting a larger diameter core to be mounted on a winding machine designed for a smaller diameter core. The core adapter includes a cylindrical body having a wall, a central bore, an outer surface, and a discontinuity in the form of a slit extending axially along and completely through the wall. The core adapter can be inserted in an end of a core and progressively secured by expanding the body, facilitated by a widening of the slit, until the body wedges against the inside surface of the core. Adhesive can be applied to the adapter or the core or both to secure the core adapter in place. The body can be expanded with screws progressively threaded through the core and into the body of the core adapter, or vice versa. Alternatively, the body can be expanded by urging a wedge into the slit to widen the slit and consequently expand the body of the core adapter radially. Alternatively still, the body can be expanded with an expandable tool inserted through the central bore of the body and expanded against the wall of the central bore. A system including a core adapter and expansion tool and methods of expanding the core adapter are also disclosed.
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