Method for measuring the sagging of a glass panel to be bent on a ring mould

The invention relates to a method for measuring the sagging of a glass panel while bending the glass panel on a ring mould. Sagging is measured with a matrix camera and the measurement data is coupled to control the progress of a bending process, particularly the heating of glass or the abortion of...

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Bibliographic Details
Main Author JANHUNEN TOIVO
Format Patent
LanguageEnglish
Published 05.07.2006
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
METALLURGY
MINERAL OR SLAG WOOL
PHYSICS
TESTING
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Summary:The invention relates to a method for measuring the sagging of a glass panel while bending the glass panel on a ring mould. Sagging is measured with a matrix camera and the measurement data is coupled to control the progress of a bending process, particularly the heating of glass or the abortion of a bending process. The ring mould can be provided with fixed pointers for facilitating a camera-operated measurement. In addition, at least one point on the glass surface, preferably between the pointers, is made visible to the camera.
Bibliography:Application Number: CN200480015432