A method and system for generating glass mold surface

Abstract

The present invention relates to the technical field of glass mold surface design, and specifically to a method and system for generating a glass mold surface, comprising: step S1: obtaining a target glass, modeling the target glass to generate a simulation model; step S2: obtaining a historical glass model according to the simulation model, and generating temperature distribution parameters of the target glass during production according to the simulation model and the historical glass model; step S3: adjusting the historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model, and generating a glass mold surface corresponding to the target glass. The beneficial effect of the present invention is that by incorporating the temperature distribution parameters into the design process of the glass mold surface, the correction of the glass mold surface design based on the temperature distribution is realized, thereby avoiding the problem of the glass mold surface needing to be corrected due to the temperature distribution factor, and increasing the probability of the mold debugging a qualified product in one time.

Description

Technical Field

[0001] The invention relates to the technical field of glass mold surface design, and in particular to a method and system for generating a glass mold surface. Background Art

[0002] Glass mold surface refers to the part of the glass mold used to form the shape of the glass. With the widespread application of glass in various industrial products, the requirements for various performances of glass are becoming increasingly higher, making the structure and shape of glass more complex. For example, the front and rear windshields and sunroofs of automotive glass are usually designed as complex curved surfaces with UV gradients to meet optical performance indicators. This brings certain difficulties to the design of glass mold surfaces.

[0003] In the prior art, there are technical solutions for designing corresponding mold surfaces for complex curved glass products. Usually, in response to new glass mold surface design requirements, the prior art often directly uses finite element technology to calculate the deformation amount that needs to be corrected through simple process simulation of the glass to be produced, and directly generates the glass mold surface.

[0004] However, in the actual implementation process, the inventors found that the mold surface directly produced according to the existing technology often makes the produced glass products fail to meet the performance indicators, especially the reflected light optical performance of some products does not meet the requirements, and there is serious reflected light distortion. However, since there are natural simulation errors in the mold surface design process of finite element calculation, the above defects are usually regarded as the inevitable result of simulation design in actual testing. Therefore, the mold surface generated by the existing technology still needs to be repeatedly repaired. Trial production and mold processing bring huge development costs. Some companies have doubts about the results of the simulation and even return to the original empirical design method, which is a regression from the international mainstream method. Summary of the invention

[0005] In view of the above problems existing in the prior art, a method and system for generating a glass mold surface are now provided.

[0006] The specific technical solutions are as follows:

[0007] A method for generating a glass mold surface, comprising:

[0008] Step S1: obtaining a target glass, and modeling the forming process of the target glass to generate a simulation model;

[0009] Step S2: acquiring a historical glass model according to the simulation model, and generating temperature distribution parameters of the target glass during production according to the simulation model and the historical glass model;

[0010] Step S3: adjusting the historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to generate a glass mold surface corresponding to the target glass.

[0011] Preferably, the step S2 comprises:

[0012] Step S21: acquiring a historical glass model that is closest to the simulation model from a plurality of historical glass models, and then generating geometric difference parameters between the historical glass model and the simulation model;

[0013] Step S22: generating the temperature distribution parameters of the target glass during production according to the geometric difference parameters.

[0014] Preferably, the step S22 includes:

[0015] Step S221: obtaining a temperature distribution diagram of the historical glass model;

[0016] The temperature distribution diagram is provided with a plurality of reference points on the historical glass model, each reference point having a temperature value corresponding to a production temperature of the historical glass model;

[0017] Step S222: adjusting the temperature value of each of the reference points according to the geometric difference parameters to generate the temperature distribution parameters.

[0018] Preferably, the step S3 comprises:

[0019] Step S31: calculating the high-temperature deformation of the target glass according to the temperature distribution parameters, and obtaining the correction amount of the historical mold surface according to the historical glass model and the simulation model;

[0020] Step S32: adjusting the historical die surface according to the correction amount to generate a first die surface;

[0021] Step S33: adjusting the first mold surface according to the high-temperature deformation amount to generate a second mold surface, and outputting the second mold surface as the glass mold surface corresponding to the target glass.

[0022] Preferably, the geometric difference parameter includes at least one of glass curvature, glass overall thickness, and glass size and shape.

[0023] Preferably, in the step S31, a viscoelastic elastic modulus model is used to generate the high-temperature deformation.

[0024] A system for generating a glass mold surface, used to implement the above-mentioned generation method, comprises:

[0025] A glass forming modeling module, wherein the glass forming modeling module acquires a target glass and models the forming process of the target glass to generate a simulation model;

[0026] A temperature distribution calculation module, the temperature distribution calculation module is connected to the glass forming modeling module, and the temperature distribution calculation module generates temperature distribution parameters of the target glass during production according to the simulation model and a historical glass model;

[0027] A mold surface generation module is connected to the temperature distribution calculation module and receives the temperature distribution parameters. The mold surface generation module adjusts a historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to output the glass mold surface.

[0028] Preferably, it further comprises a data storage module, wherein the data storage module is connected to the temperature distribution calculation module and the mold surface generation module;

[0029] The data storage module stores a plurality of historical glass models and historical mold surfaces respectively corresponding to the historical glass models;

[0030] The data storage module outputs the historical glass model to the temperature distribution calculation module, and outputs the historical glass model and the historical mold surface corresponding to the historical glass model to the mold surface generation module.

[0031] Preferably, the temperature distribution calculation module includes:

[0032] A geometric difference calculation submodule, the geometric difference calculation submodule is connected to the glass forming modeling module and receives the simulation model, the geometric difference calculation submodule obtains a historical glass model that is closest to the simulation model, and calculates geometric difference parameters between the historical glass model and the simulation model;

[0033] A temperature difference calculation submodule is connected to the geometric difference calculation submodule and receives the geometric difference parameters. The temperature difference calculation submodule adjusts the temperature distribution diagram of the historical glass model according to the geometric difference parameters, thereby generating the temperature distribution parameters.

[0034] Preferably, the die surface generation module comprises:

[0035] A temperature deformation submodule, the temperature deformation submodule is connected to the temperature distribution calculation module, and the temperature deformation submodule calculates the high-temperature deformation amount of the target glass according to the temperature distribution parameters;

[0036] A first correction submodule, which corrects the historical mold surface according to the simulation model and the historical glass model to generate a first mold surface;

[0037] A second correction submodule is used to correct the first mold surface according to the high-temperature deformation to generate a second mold surface, and then output the second mold surface as the glass mold surface.

[0038] The above technical solution has the following advantages or beneficial effects: by incorporating temperature distribution parameters into the design process of the glass mold surface, the correction of the glass mold surface design based on the temperature distribution is achieved, thereby avoiding the problem of the glass mold surface needing to be corrected due to temperature distribution factors, and greatly improving the probability of developing a qualified product in one glass mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The embodiments of the present invention will be described more fully with reference to the attached drawings, which are provided for illustration and description only and are not intended to limit the scope of the present invention.

[0040] Figure 1 is an overall schematic diagram of an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of sub-steps of step S2 in an embodiment of the present invention;

[0042] Figure 3 This is a schematic diagram of sub-steps of step S2 in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the temperature distribution of the historical glass model in an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of reference points of a temperature distribution diagram in an embodiment of the present invention;

[0045] Figure 6 The temperature distribution diagram after adjustment in the embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of sub-steps of step S3 in an embodiment of the present invention;

[0047] Figure 8 This is a schematic diagram of high temperature deformation in an embodiment of the present invention;

[0048] Fig. 9 This is a schematic diagram of the second mold surface in an embodiment of the present invention;

[0049] Fig.10 Schematic diagram of a system for generating a glass mold surface in an embodiment of the present invention. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0053] The present invention comprises:

[0054] A method for generating a glass mold surface, such as Figure 1 As shown, including:

[0055] Step S1: obtaining a target glass, and modeling the forming process of the target glass to generate a simulation model;

[0056] Step S2: obtaining a historical glass model according to the simulation model, and generating temperature distribution parameters of the target glass during production according to the simulation model and the historical glass model;

[0057] Step S3: adjusting the historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to generate a glass mold surface corresponding to the target glass.

[0058] In view of the problem that the glass mold surface design by finite element calculation in the prior art requires multiple corrections, the inventor analyzed and summarized multiple product samples and concluded that because the glass is in a viscoelastic state during the hot processing and forming process in the mold, it will naturally fall under the action of gravity. In response to this problem, although the prior art uses finite element analysis to simulate the state of glass during the hot processing, it does not take into account the distribution of temperature parameters on complex curved glass. For example, there is often a large temperature difference between the center and edge areas of the glass, and the thickness of the glass itself will also affect the temperature distribution, which will cause a large deviation in the results of the finite element analysis.

[0059] To address this problem, in this embodiment, by generating temperature distribution parameters during the glass design process, it is possible to simulate the uneven falling condition of the target glass caused by the difference in temperature distribution in different areas during the actual production process, and then the glass mold surface can be effectively adjusted according to the deformation condition to generate a more accurate glass mold surface.

[0060] In a preferred embodiment, Figure 2As shown, step S2 includes:

[0061] Step S21: obtaining a historical glass model that is closest to the simulation model from a plurality of historical glass models, and then generating geometric difference parameters between the historical glass model and the simulation model;

[0062] Step S22: Generate temperature distribution parameters of the target glass during production according to the geometric difference parameters.

[0063] Specifically, in order to address the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, the historical glass model is retrieved and the historical glass model closest to the simulation model is obtained, and the difference in the change of the model surface is calculated between the two models, so that the change in the glass temperature distribution can be calculated according to the change in the model, and temperature distribution parameters that are relatively consistent with the target glass are generated.

[0064] In a preferred embodiment, Figure 3 As shown, step S22 includes:

[0065] Step S221: obtaining a temperature distribution diagram of a historical glass model;

[0066] The temperature distribution diagram is provided with a plurality of reference points on the historical glass model, each of which has a temperature value corresponding to the production temperature of the historical glass model.

[0067] Step S222: adjusting the temperature value of each reference point according to the geometric difference parameter to generate a temperature distribution parameter.

[0068] Specifically, in view of the problem that the existing technology cannot effectively simulate the falling condition of complex curved glass in a high-temperature viscoelastic state when designing the glass mold surface, in this embodiment, by obtaining the pre-collected Figure 4 The temperature distribution diagram of the historical glass model shown in the figure can be used to obtain the temperature distribution of the historical glass produced by the historical glass model. Based on the temperature distribution, the following can be obtained: Figure 5 Then, the temperature at each reference point is corrected based on the geometric difference parameter so that the temperature distribution of each reference point conforms to the actual temperature distribution of the target glass during production, thereby generating the following Figure 6The temperature distribution diagram shown, the temperature distribution parameters can be obtained from the temperature distribution diagram. For example, in one embodiment, the thickness of the historical glass model is thicker than the target glass as a whole, and the other geometric difference parameters such as curvature, glass size and shape, thickness distribution, etc. are all kept consistent. In this embodiment, the thickness difference between the historical glass model and the simulation model is obtained by calculation, and the temperature value of each reference point is averaged according to the thickness difference, so that the temperature distribution parameters are consistent with the actual temperature distribution of the target glass. For example, in another embodiment, the glass curvature of the simulation model is larger than that of the historical glass model, so that the temperature distribution function of the simulation model in the horizontal axis direction has a greater kurtosis than that of the historical glass model. According to the curvature difference between the Fangzheng model and the historical glass model, the temperature distribution values ​​between the reference points and the maximum temperature value of the center are adjusted, so that the temperature distribution parameters are consistent with the actual temperature distribution of the target glass.

[0069] In a preferred embodiment, Figure 7 As shown, step S3 includes:

[0070] Step S31: calculating the high-temperature deformation of the target glass according to the temperature distribution parameters, and obtaining the correction amount of the historical mold surface according to the historical glass model and the simulation model;

[0071] Step S32: adjusting the historical die surface according to the correction amount to generate a first die surface;

[0072] Step S33: adjusting the first mold surface according to the high-temperature deformation amount to generate a second mold surface, and outputting the second mold surface as a glass mold surface corresponding to the target glass.

[0073] Specifically, in view of the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, by obtaining relatively accurate temperature distribution parameters, the viscoelastic elastic modulus model can be used to accurately calculate the high-temperature deformation of the target glass in the actual production process; then, the correction amount of the historical mold surface is obtained according to the difference between the historical glass model and the simulation model, thereby generating a first mold surface corresponding to the simulation model, and then the high-temperature deformation is included in the calculation to generate a second mold surface corresponding to the actual deformation condition, thereby achieving accurate calculation of the glass mold surface. Specifically, Figure 8 As shown in FIG. 1 , the simulation model is calculated by the viscoelastic elastic modulus model, so that the high-temperature deformation of the target glass can be obtained. Subsequently, the high-temperature deformation is superimposed on the first mold surface, and the displacement is subtracted to obtain the corrected model point cloud. The surface is constructed based on the model point cloud to obtain the following: Fig. 9 The second mold surface is shown.

[0074] In a preferred embodiment, the geometric difference parameter includes at least one of glass curvature, glass overall thickness, glass shape and size, and glass thickness distribution.

[0075] Specifically, in order to address the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, different geometric difference parameters are selected to compare the historical glass model and the simulation model, so that the glass temperature distribution can be changed according to the geometric difference parameters, thereby making the temperature distribution condition consistent with the actual temperature distribution during the production of the target glass.

[0076] In a preferred embodiment, in step S31, a viscoelastic elastic modulus model is used to generate high temperature deformation.

[0077] A system for generating a glass mold surface, used to implement the above-mentioned generation method, such as Fig.10 As shown, including:

[0078] The glass forming modeling module 1 obtains a target glass and models the forming process of the target glass to generate a simulation model;

[0079] The temperature distribution calculation module 2 is connected to the glass forming modeling module 1, and the temperature distribution calculation module 2 generates temperature distribution parameters of the target glass during production according to the simulation model and a historical glass model;

[0080] The mold surface generation module 3 is connected to the temperature distribution calculation module 2 and receives the temperature distribution parameters. The mold surface generation module 3 adjusts a historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to output a glass mold surface.

[0081] Specifically, in order to address the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, the glass forming modeling module 1, the temperature distribution calculation module 2 and the mold surface generation module 3 are sequentially arranged, and the temperature distribution of the target glass is incorporated into the mold surface design process. By calculating the temperature distribution parameters of the target glass during production, the high-temperature deformation of different types of glass caused by uneven temperature distribution during production is simulated, thereby calculating a more accurate mold surface and reducing the number of corrections.

[0082] In a preferred embodiment, it further comprises a data storage module 4, the data storage module 4 is connected to the temperature distribution calculation module 2 and the mold surface generation module 3;

[0083] The data storage module 4 stores a plurality of historical glass models and historical mold surfaces corresponding to the historical glass models respectively;

[0084] The data storage module 4 outputs the historical glass model to the temperature distribution calculation module 2 , and outputs the historical glass model and the historical mold surface corresponding to the historical glass model to the mold surface generation module 3 .

[0085] Specifically, in order to achieve better mold surface design efficiency, in this embodiment, a data storage module 4 is provided to store historical glass models and historical mold surfaces corresponding to the historical glass models, so that mold surface design can be performed based on the historical mold surfaces to improve mold surface design efficiency.

[0086] In a preferred embodiment, the temperature distribution calculation module 2 includes:

[0087] A geometric difference calculation submodule 21, which is connected to the glass forming modeling module 1 and receives the simulation model. The geometric difference calculation submodule 21 obtains a historical glass model that is closest to the simulation model and calculates geometric difference parameters between the historical glass model and the simulation model.

[0088] The temperature difference calculation submodule 22 is connected to the geometric difference calculation submodule 21 and receives the geometric difference parameters. The temperature difference calculation submodule 22 adjusts the temperature distribution diagram of the historical glass model according to the geometric difference parameters, thereby generating temperature distribution parameters.

[0089] Specifically, in order to address the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, the geometric difference parameters between the historical glass model and the simulation model are calculated, and the temperature distribution of the historical glass model is adjusted according to the geometric difference parameters, so that the temperature distribution of the historical glass model is consistent with the actual production situation of the target glass, thereby improving the simulation of the deformation of the target glass in a high-temperature state during the mold surface design process and improving the accuracy of the design.

[0090] In a preferred embodiment, the die surface generation module 3 includes:

[0091] The temperature deformation submodule 31 is connected to the temperature distribution calculation module 2, and the temperature deformation submodule 31 calculates the high-temperature deformation amount of the target glass according to the temperature distribution parameters;

[0092] A first correction submodule 32, which corrects the historical mold surface according to the simulation model and the historical glass model to generate a first mold surface;

[0093] The second correction submodule 33 corrects the first mold surface according to the high-temperature deformation amount to generate a second mold surface, and then outputs the second mold surface as a glass mold surface.

[0094] Specifically, in order to address the problem in the prior art that the falling condition of complex curved glass in a high-temperature viscoelastic state cannot be effectively simulated when designing the glass mold surface, in this embodiment, a temperature deformation submodule 31, a first correction submodule 32, and a second correction submodule 33 are sequentially arranged, so that the viscoelastic elastic modulus model can be used to accurately calculate the high-temperature deformation that will be generated by the target glass in the actual production process; then, the correction amount of the historical mold surface is obtained according to the difference between the historical glass model and the simulation model, so as to generate a first mold surface corresponding to the simulation model, and then the high-temperature deformation amount is incorporated into the calculation to generate a second mold surface corresponding to the actual deformation condition, thereby achieving accurate calculation of the glass mold surface.

[0095] The beneficial effect of the present invention is that by incorporating temperature distribution parameters into the design process of the glass mold surface, the correction of the glass mold surface design based on the temperature distribution is achieved, thereby avoiding the problem of repeated correction of the glass mold surface due to temperature distribution factors, reducing the number of new product debugging times, and reducing the cost of glass development.

[0096] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for generating a glass mold surface, characterized in that: include: Step S1: obtaining a target glass, and modeling the forming process of the target glass to generate a simulation model; Step S2: acquiring a historical glass model according to the simulation model, and generating temperature distribution parameters of the target glass during production according to the simulation model and the historical glass model; Step S3: adjusting the historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to generate a glass mold surface corresponding to the target glass; The step S2 comprises: Step S21: acquiring a historical glass model that is closest to the simulation model from a plurality of historical glass models, and then generating geometric difference parameters between the historical glass model and the simulation model; Step S22: generating the temperature distribution parameters of the target glass during production according to the geometric difference parameters; The step S22 comprises: Step S221: obtaining a temperature distribution diagram of the historical glass model; The temperature distribution diagram is provided with a plurality of reference points on the historical glass model, each reference point having a temperature value corresponding to a production temperature of the historical glass model; Step S222: adjusting the temperature value of each of the reference points according to the geometric difference parameter to generate the temperature distribution parameter; The step S3 comprises: Step S31: calculating the high-temperature deformation of the target glass according to the temperature distribution parameters, and obtaining the correction amount of the historical mold surface according to the historical glass model and the simulation model; Step S32: adjusting the historical die surface according to the correction amount to generate a first die surface; Step S33: adjusting the first mold surface according to the high-temperature deformation amount to generate a second mold surface, and outputting the second mold surface as the glass mold surface corresponding to the target glass.

2. The generation method according to claim 1, characterized in that: The geometric difference parameter includes at least one of glass curvature, glass overall thickness, and glass size and shape.

3. The generation method according to claim 1, characterized in that: In the step S31, the high temperature deformation is generated by using a viscoelastic elastic modulus model.

4. A system for generating a glass mold surface, characterized in that: Used to implement the generation method according to any one of claims 1 to 3, comprising: A glass forming modeling module, wherein the glass forming modeling module acquires a target glass and models the forming process of the target glass to generate a simulation model; A temperature distribution calculation module, the temperature distribution calculation module is connected to the glass forming modeling module, and the temperature distribution calculation module generates temperature distribution parameters of the target glass during production according to the simulation model and a historical glass model; A mold surface generation module is connected to the temperature distribution calculation module and receives the temperature distribution parameters. The mold surface generation module adjusts a historical mold surface corresponding to the historical glass model according to the temperature distribution parameters and the simulation model to output the glass mold surface.

5. The generation system according to claim 4, characterized in that It also includes a data storage module, the data storage module is connected to the temperature distribution calculation module and the mold surface generation module; The data storage module stores a plurality of historical glass models and historical mold surfaces respectively corresponding to the historical glass models; The data storage module outputs the historical glass model to the temperature distribution calculation module, and outputs the historical glass model and the historical mold surface corresponding to the historical glass model to the mold surface generation module.

6. The generation system according to claim 4, characterized in that The temperature distribution calculation module comprises: A geometric difference calculation submodule, the geometric difference calculation submodule is connected to the glass forming modeling module and receives the simulation model, the geometric difference calculation submodule obtains a historical glass model that is closest to the simulation model, and calculates geometric difference parameters between the historical glass model and the simulation model; A temperature difference calculation submodule is connected to the geometric difference calculation submodule and receives the geometric difference parameters. The temperature difference calculation submodule adjusts the temperature distribution diagram of the historical glass model according to the geometric difference parameters, thereby generating the temperature distribution parameters.

7. The generation system according to claim 4, characterized in that: The die surface generation module comprises: A temperature deformation submodule, the temperature deformation submodule is connected to the temperature distribution calculation module, and the temperature deformation submodule calculates the high-temperature deformation amount of the target glass according to the temperature distribution parameters; A first correction submodule, which corrects the historical mold surface according to the simulation model and the historical glass model to generate a first mold surface; A second correction submodule is used to correct the first mold surface according to the high-temperature deformation to generate a second mold surface, and then output the second mold surface as the glass mold surface.

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