Press-molding device for lenses

Details Press-molding device for lenses Press-molding device for lenses

1988-09-26

1989-06-06

Kellogg, Arthur

Glass manufacturing

Product or parison centering means, or mold and/or core...

65 37, 65106, 65275, 65286, 65308, 65321, C03B 1108

Patent

active

048368407

ABSTRACT:
In a press-molding device for lenses, an upper surface of a drag is formed into a molding surface, and a lower surface of a cope is formed into a molding surface. An inner peripheral surface of a guide mold portion is in contact with an outer peripheral surface of the drag, and has an axial length longer than that of the outer peripheral surface of the drag so that the inner peripheral surface extends upwardly from the molding surface of the drag. The cope is capable of sliding along the inner peripheral surface. A pressure plate is in contact with an upper surface of the cope before pressing, and is abutted against the upper surface of the guide mold portion by the pressing. A glass preform to be molded is arranged between the molding surfaces of the respective cope and drag. The cope is pressed from above through the pressure plate, thereby molding the glass preform to a lens. The guide mold portion may be divided into a pair of upper and lower portions.

REFERENCES:
patent: 810375 (1906-01-01), Myers
patent: 3244497 (1966-04-01), Copeland
patent: 4734118 (1988-03-01), Marechal et al.

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