Expanding mandrel assembly for a web-coiling core

Details Expanding mandrel assembly for a web-coiling core Expanding mandrel assembly for a web-coiling core

1986-06-13

1988-03-15

Werner, David

Winding, tensioning, or guiding

Coil holder or support

Spool or core

279 2R, B65H 1604, B65H 1804, B65H 6700

Patent

active

047307790

ABSTRACT:
An expanding mandrel for clamping a tubular member, especially a tubular core on which a paper web can be coiled in a machine for coiling the web or for supplying the web from a coil, has a pin with flat surfaces against which bracing elements support angularly equispaced segments in a cage which are pressed outwardly to urge convex surfaces of the segments against the inner surface of the core. Along longitudinal edges of the segments rounded rises or protuberances are provided which prevent stress peaks tending to damage the core.

REFERENCES:
patent: 3910520 (1975-10-01), Mosser
patent: 4334652 (1982-06-01), Blackburn
patent: 4339094 (1982-07-01), Thievessen et al.
patent: 4635872 (1987-01-01), Thievessen

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