Glass compression molding apparatus

Details Glass compression molding apparatus Glass compression molding apparatus

1993-04-19

1995-04-04

Jones, W. Gary

Glass manufacturing

Preform reshaping means

65361, 65305, 65318, C03B 1100

Patent

active

054033705

ABSTRACT:
A glass compression molding apparatus includes a horizontal upper platen and a lower platen disposed parallel to the upper platen. A top die is mounted for movement along the upper platen between a plurality of stations, and a bottom die is mounted for movement along the lower platen between another plurality of stations. A preform is introduced into the bottom die and then heated and compressed to form a molded product. The molded product is annealed and then removed from the bottom die. A clamping device forces the upper and lower platens together. A compression device compresses the preform. A conveying device moves at least the bottom die while suspended above the lower platen. Thus, wear of the lower platen, which would otherwise result from the sliding of the bottom die on the lower platen or the entry of foreign matter between the bottom die and the lower platen, is avoided. Such a wear or entry of foreign matter would occur while the mold is moved between stations in the conventional apparatus. Therefore, the alignment of the mold can be maintained, and the dimensional accuracy of the product can be improved.

REFERENCES:
patent: 3951636 (1976-04-01), Gunthner
patent: 4199342 (1980-04-01), Mestre
patent: 4273567 (1981-06-01), Scholl
Websters New International Dictionary of the English Language, Merriam-Webster, 1937, Springfield, Mass.

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