Method for measuring the sagging of a glass panel to be bent...

G - Physics – 01 – B

Patent

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G01B 11/24 (2006.01)

Patent

CA 2527565

The invention relates to a method for measuring the sagging of a glass panel while bending the glass panel on a ring mould (1). 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 glass surface, preferably between the pointers, is made visible to the camera.

L'invention se rapporte à un procédé de mesure du ramollissage d'un panneau de verre lors de son fléchissement sur un moule annulaire (1). Le ramollissage est mesuré au moyen d'une caméra matricielle et les données de mesure sont couplées afin de contrôler l'évolution d'une procédé de fléchissement, particulièrement la chaleur du verre ou l'arrêt d'un processus de fléchissement. Le moule annulaire peut être doté de pointeurs fixes facilitant la mesure effectuée par une caméra. Par ailleurs, au moins un point sur la surface de verre, de préférence entre les pointeurs, est visible avec la caméra.

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