Abstract: The present invention relates to a method or an apparatus for bending a plate-like material such as a glass sheet for a side window having a double-curved surface for automobiles wherein the positioning of support frame and forming mold is performed with high precision.

Abstract: It is an object of the present invention to provide a method for bending a glass sheet which can appropriately prevent cloth mark due to suctioning.

Abstract: The present invention relates to a method or an apparatus for bending a plate-like material such as a glass sheet for a side window having a double-curved surface for automobiles wherein the positioning of support frame and forming mold is performed with high precision.

Abstract: An air-cooling and tempering apparatus for a glass sheet includes an upper air-blowing unit, which blows cooling air to an upper surface of a bent glass sheet having a high temperature; and a lower air-blowing unit, which blows cooling air to a lower surface of the glass sheet. Each of the upper air-blowing unit and the lower air-blowing unit includes a plurality of air-blowing members provided in a matrix pattern and a plurality of linkages, the linkages coupling adjacent air-blowing members among the plurality of air-blowing members in a row and/or column direction of the matrix pattern.

Abstract: It is an object of the present invention to provide a method for bending a glass sheet which can appropriately prevent cloth mark due to suctioning.

Abstract: A roller assembly for a glass sheet bending apparatus has a guide shaft bent to have a predetermined curvature and a plurality of ring rollers fitted rotatably to the guide shaft whereby a glass sheet is bent while the glass sheet is transferred into a predetermined direction by the rotation of the ring rollers, wherein the guide shaft is formed by overlapping a plurality of strip members bendable to have predetermined curvatures and the ring rollers are rotatably fitted to the guide shaft by means of bearings.

Abstract: There are a preliminarily bending step for putting heated and softened glass sheet on a preliminarily bending supporting-frame, the glass sheet having an edge portion supported by the preliminarily bending supporting-frame, and for bending the glass sheet into a desired preliminarily bent shape while putting the glass sheet on the preliminarily bending supporting-frame; and a finally bending step for transferring the preliminarily bent glass sheet on a finally bending supporting-frame, the glass sheet having an edge portion supported by the finally bending supporting-frame, and for bending the glass sheet into a final bent shape by pressing the glass sheet against a bending surface of a finally bending mold while putting the glass sheet on the finally bending supporting-frame.

Abstract: A glass sheet G, which has been heated to the bending temperature by a heating furnace 12, is preliminary bent in the course of being conveyed to a bending position by a roller conveyer for preliminary bending 20. When the glass sheet thus preliminary bent is put on a press ring at the bending position, the glass sheet is pressed against the bending surface 26 of a mold 24 by upward movement of the press ring 22 to be bent so as to have a desired radius of curvature. After that, the press ring 22 is moved toward an air-cooling/tempering apparatus 16. When the press ring 22 is introduced into a certain tempering position S, cooling air is ejected from an upper blowing head 30 and a lower blowing head 32 toward the glass sheet G to air cool and temper the glass sheet G.

Abstract: An air-cooling and tempering apparatus for a glass sheet includes an upper air-blowing unit, which blows cooling air to an upper surface of a bent glass sheet having a high temperature; and a lower air-blowing unit, which blows cooling air to a lower surface of the glass sheet. Each of the upper air-blowing unit and the lower air-blowing unit includes a plurality of air-blowing members provided in a matrix pattern and a plurality of linkages, the linkages coupling adjacent air-blowing members among the plurality of air-blowing members in a row and/or column direction of the matrix pattern.

Abstract: A roller assembly for a glass sheet bending apparatus has a guide shaft bent to have a predetermined curvature and a plurality of ring rollers fitted rotatably to the guide shaft whereby a glass sheet is bent while the glass sheet is transferred into a predetermined direction by the rotation of the ring rollers, wherein the guide shaft is formed by overlapping a plurality of strip members bendable to have predetermined curvatures and the ring rollers are rotatably fitted to the guide shaft by means of bearings.