Pin support and mold for foaming and curing resin exterior over

Details Pin support and mold for foaming and curing resin exterior over Pin support and mold for foaming and curing resin exterior over

1982-09-20

1984-03-13

Anderson, Philip E.

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

249 97, 264 464, 264 469, 264275, 264278, 273 65R, 425817R, B29D 2704

Patent

active

044362765

ABSTRACT:
Molding apparatus 10 or 11 supports a tough, resin ball core 15 in the center of a spherical mold cavity having upper and lower mold parts 12 and 13. Core 15 is about half the diameter of the mold cavity allowing room for foamed resin exterior 16 to form over and around core 15 filling the mold cavity and completing the spherical ball. A pin support 20 formed as a single pin 21 or a pair of identical pins 31 holds core 15 in the center of the mold cavity and is withdrawn after the ball is molded. The pin support is arranged at the mold parting plane and extends through the parts to the mold exterior thus providing full support and accurate location of the core within the mold cavity. A coupling element on pin support 20 is formed as a hook 28 or other engageable element outside the mold and is used for placing the core in the mold and also for supporting the ball for curing after molding.

REFERENCES:
patent: 721462 (1903-02-01), Richards
patent: 791648 (1905-06-01), Richards
patent: 1624670 (1927-04-01), Martin
patent: 2084247 (1937-06-01), Dockray et al.
patent: 2730785 (1956-01-01), Williams et al.
patent: 3199829 (1965-08-01), Calim
patent: 3202742 (1965-08-01), Bachelder et al.
patent: 3340342 (1967-09-01), Kane et al.
patent: 4067946 (1978-01-01), Rickert
patent: 4116439 (1978-09-01), Chavarria et al.

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