Granted Patent B2

US 12,552,700 · App. 17/763,997 · Granted Feb 17, 2026

Inventors: Jia Zhu (Shanghai, CN); Bernard Nghiem (Shanghai, CN); Zhiyi Wang (Shanghai, CN); Romain Decourcelle (Shanghai, CN)

Assignee: SAINT-GOBAIN SEKURIT FRANCE

C03B23/03C03B23/033G06F30/27C03B2225/02

Abstract

Claims (23)

1 . A computer-implemented method for glass bending comprising:

obtaining a deviation of a real shape of a glass from a desired shape of the glass, the glass is produced by a glass bending process;

determining a variation of at least one parameter associated with the glass bending process, at least in part based on the deviation of the real shape from the desired shape; and

adjusting the at least one parameter based on the variation for compensation of the deviation,

wherein determining the variation comprises

determining an effect of the at least one parameter on the deviation by decoupling a contribution of the at least one parameter to the deviation from a contribution of one or more further parameters associated with the glass bending process to the deviation, and

determining the variation based on the deviation and the effect of the at least one parameter,

wherein the glass bending process comprises applying a mold on the glass, and wherein the effect of the at least one parameter on the deviation is determined based on following variables: reference positions used in measuring the deviation, slopes of a surface of the mold at the reference positions, measurement positions used in measuring the deviation, and slopes of the surface of the mold at the measurement positions; or

wherein the glass bending process comprises a roller bending process, and the effect of the at least one parameter on the deviation is determined based on following variables: a primary radius of the glass, reference positions used in measuring the deviation, measurement positions used in measuring the deviation, and a secondary radius of rollers in the roller bending process; or

wherein the glass bending process comprises a roller bending process, and the effect of the at least one parameter on the deviation is determined based only on following variables: a primary radius of the glass, reference positions used in measuring the deviation, and measurement positions used in measuring the deviation.

2 . The method of claim 1 , wherein the contribution of the at least one parameter to the deviation is represented by a first function of the at least one parameter, the contribution of the one or more further parameters to the deviation is represented by a second function of the one or more further parameters, and the deviation is a sum of the first function, the second function, and terms independent of the at least one parameter and the one or more further parameters.

3 . The method of claim 1 , wherein the deviation is an affine function of the at least one parameter and one or more further parameters, and wherein determining the effect of the at least one parameter on the deviation comprises:

determining at least one coefficient of the affine function about the at least one parameter.

4 . The method of claim 1 , wherein the at least one parameter comprises at least one position parameter of the glass at an entrance of a furnace in the glass bending process.

5 . The method of claim 4 , wherein the at least one position parameter comprises at least one of a rotation angle and translations of the glass.

6 . The method of claim 1 , wherein the at least one process parameter comprises at least one of temperature, air speed, and sagging time.

7 . The method of claim 1 , wherein a relationship between the deviation and the at least one parameter is simulated by a machine learning model, the machine learning model comprises a neural network, Support Vector Machine (SVM), Integrated Decision Tree (IDT), and wherein determining the variation comprises:

determining the variation based on the deviation by the machine learning model.

8 . The method of claim 1 , wherein when the deviation is less than a predefined shape tolerance, the method further comprises maintaining the at least one parameter without adjustment.

9 . A method for producing a glass, comprising:

applying a glass bending process based on at least one parameter to the glass;

measuring a deviation of a real shape of the glass from a desired shape of the glass; and

determining the adjusted at least one parameter by the method of claim 1 .

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (32)