Shaping and quenching glass sheets by roll forming using transition quench rolls
US4123246A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1978 |
| Grant date | Oct 31, 1978 |
| Priority date | — |
| Expiry date | Jan 26, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B23/033
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to shaping and quenching glass sheets by roll forming to either simple or compound curvatures comprising a longitudinal component of curvature about an axis of bending transverse to a path of movement by a controlled, repeatable program of roll forming without causing the glass sheets to stop their forward movement during their shaping. A series of glass sheets are heated and then rapidly cooled while conveyed along a path defined by a conveyor system comprising longitudinally spaced rotating rolls. The path includes a longitudinally curved portion that imparts a longitudinal component of curvature to the glass sheets after the latter are softened by heat. In this invention, shaped solid members such as successive rotating shaping rolls of predetermined contour of a uniform cylindrical or curved configuration engage a heat-softened glass sheet along an arcuate longitudinal path of substantially constant radius of curvature along forming and quenching conveyors of said conveyor system to impart the desired longitudinal component of curvature to the glass and to convey the shaped glass past cool blasts that harden the glass surfaces. The arcuate path is arrange…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.