Molding apparatus and method in which a mold cavity gasket is de

Details Molding apparatus and method in which a mold cavity gasket is de Molding apparatus and method in which a mold cavity gasket is de

1994-08-18

1997-01-28

Davis, Robert

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

2642711, 425116, 425117, 425544, B29C 4502, B29C 4514

Patent

active

055975232

ABSTRACT:
A molding apparatus having an upper mold, a lower mold, and a cylindrical mold cavity defined between the upper mold and the lower mold and adapted to receive a molding material such as epoxy resin. An annular recess is defined in the lower mold adjacent to the mold cavity. A gasket is fit in the recess and made of lead. An oil passage is defined in the lower mold. Silicon oil as a pressure medium is fed to the recess through the oil passage so as to press the gasket against the upper mold. Then, the gasket is deformed to form a seal around a portion of the mold cavity where the upper and lower molds mate with one another. An annular spacer is placed in the bottom of the recess. An annular groove is defined below and along the bottom of the recess so as to allow the silicon oil to flow below and along the annular spacer, whereby sufficient pressure is exerted uniformly on the gasket to cause deformation of the gasket.

REFERENCES:
patent: 2326381 (1943-08-01), Milligan et al.
patent: 2615411 (1952-10-01), Clevenger et al.
patent: 3200442 (1965-08-01), Haller
patent: 4626185 (1986-12-01), Monnet
patent: 4732553 (1988-03-01), Hofer
patent: 4952135 (1990-08-01), Douglas
patent: 5061429 (1991-10-01), Yoshihara et al.
patent: 5118271 (1992-06-01), Baird et al.
patent: 5151276 (1992-09-01), Sato et al.
patent: 5268183 (1993-12-01), Garza
patent: 5395226 (1995-03-01), Sakai et al.

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