Collapsible mold core

Details Collapsible mold core Collapsible mold core

B - Operations, Transporting

29

C

18/1205

B29C 1/06 (1980.01)

Patent

CA 1148321

ABSTRACT OF THE DISCLOSURE A collapsible mold core comprises an inner core member defining opposed first and second ends. The inner core member tapers transversely to a reduced diameter from the first to the second end. A plurality of outer core members are attached to the lateral exterior of the inner core member in longitudinally slidable relation to it be- tween first and second sliding positions. The outer core members define first and second ends corresponding in posi- tion to the first and second ends of the inner core member, with the outer core members tapering inwardly in transverse dimension from their second to their first ends to provide are opposite taper to that of the inner core member. The mold core is of lesser transverse diameter in the second sliding position then in the first sliding position. This permits the molding of an object such as a straight-walled bucket having an inwardly-projecting lip about the mold core while it occupies the first sliding position. There- after, removal of the object from the core can be accompanied with the transfer of the mold core to the second sliding posi- tion, permitting the removal of the bucket from the core.

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