Method of making an epoxy mold

Details Method of making an epoxy mold Method of making an epoxy mold

1988-01-20

1989-04-25

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

Utilizing surface to be reproduced as an impression pattern

264277, 264278, 249134, 249165, 29458, 29460, 295261, 425179, B29C 3338, B29C 3910

Patent

active

048246280

ABSTRACT:
A method of making epoxy molds for making wax patterns have metal posts disposed therein which transfer compressive forces between the force applying members of the press in which the molds are located. The metal cylinders in the upper mold section have right hand screw threaded axial bores and the metal cylinders in the lower mold section have left hand screw threaded axial bores. The metal cylinders are connected together when the mold sections are poured by connecting studs which have oppositely threaded ends. After the epoxy cures, screw drivers are inserted into the threaded bores from outside the molds and the connecting studs are turned in a direction which causes the mold sections to separate in turnbuckle fashion. Accurate alignment of the inner end faces of the cylinders in the parting surfaces of the mold sections is achieved by having the metal posts connected during the mold pouring steps.

REFERENCES:
patent: 2039105 (1936-04-01), Naery
patent: 3075265 (1963-01-01), Stumph et al.
patent: 4285902 (1981-08-01), Braverman
patent: 4601867 (1986-07-01), Martell et al.

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