Apparatus and method for moving a glass mass, such as a glass sheet in horizontal attitude through a bending section of a heating oven. The glass sheet at a deformation temperature is imparted movement along the conveyor system including a plurality of rollers, and a gaseous flow at high temperature, having a flow speed which varies continuously across the width of the glass sheet, impinges on its lower surface to at least partially balance the weight of the glass sheet in regions requiring good optical quality.

Fabrication of glass

Method for the transportation of glass sheets brought to the deformation temperature, its application to bending and device for its implementation

L'invention a pour objet le transport de volumes de verre en position horizontale, sur des rouleaux tournants echelonnes a travers un four de rechauffage dans lequel ces volumes sont portes a leur temperature de deformation, tandis qu'un courant gazeux a haute temperature dont la vitesse d'ecoulement varie continuement sur la largeur est dirige sur leurs faces inferieures. The invention relates to glass sheets of the carriage horizontally, on rotatable rollers staggered through a reheating furnace in which the volumes are brought to their deformation temperature, while a high temperature gas stream whose flow rate varies continuously over the width is directed onto their lower faces. Un dispositif de mise en oeuvre comprend un four tunnel equipe d'un convoyeur a rouleaux passant au-dessus de chambres (10) emettrices de gaz chauds sous pression, fermees a leur partie superieure par une platine perforee (9) pourvue de moyens de regler l'emission de gaz dans des plages determinees de sa surface. An implementation device comprises a tunnel furnace equipped with a roller conveyor passing over chambers (10) emitting hot gas under pressure, closed in their upper part by a perforated plate (9) provided with means to adjust the gas emission in specific ranges of its surface. L'invention s'applique en particulier a la mise en oeuvre et a l'acceleration du bombage de volumes de verre destines en particulier a des vehicules. The invention applies in particular to the implementation and to the acceleration of bending glass sheets intended in particular for vehicles.

Fabrication of glass

Citations

Method for the transportation of glass sheets brought to the deformation temperature, its application to bending and device for its implementation

Method of transporting glass sheets brought to their deformation temperature and apparatus therefor

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