Method and device for preliminarily bonding laminated glass using curved roll

Abstract

[Object] When press-bonding superposed curved glass plates together by a plurality of curved rolls, even if curvature of the curved glass changes, a preliminary bonding method and device of a laminated glass can cope with a variety of curvatures of the curved glass plate by an easy adjustment. [Means to solve] The preliminary bonding device of the laminated glass has a pair of arcuately-curved rigid fixed shafts, each of which has an arc shape at a middle portion thereof and a linear shape at both ends thereof, a pair of curved rolls, each of which is formed from a covering roll member of a flexible resin layer that covers whole outermost circumferential surfaces of a plurality of short rigid cylindrical members that are provided at an outer circumference of the fixed shaft and are able to rotate through bearings, a roll driving means which drives and rotates the covering roll member of the curved roll, a curvature direction adjusting means that can adjust an angle of a direction of a curved convex portion of the arcuate fixed shaft, and a roll pressing means which sandwiches and presses the glass plates between the curved rolls. By adjusting rotation of the fixed shafts of the pair of upper and lower curved rolls by means of the curvature direction adjusting means, the preliminary bonding device can bond the glass plates of the laminated glass plate from a flat glass plate to a curved glass plate by sandwiching and pressing the glass plates.