Glass ceramic integrated continuous heat treatment system

Abstract

The utility model provides a glass ceramic integrated continuous heat treatment system which comprises an annealing treatment device for annealing base glass and a nucleation and crystallization heat treatment device for nucleation and crystallization of the annealed base glass, the annealing treatment device is used for annealing basic glass, the transfer device is used for transferring the annealed basic glass into the nucleation and crystallization heat treatment device, the AOI inspection device is used for carrying out quality inspection on the annealed basic glass, and automatic feeding is carried out between the annealing treatment device and the nucleation and crystallization heat treatment device through an assembly line or the transfer device. By combining the basic glass annealing treatment section device with the nucleation and crystallization heat treatment section device, end-to-end control of the microcrystalline glass and melting to obtain a finished product are realized, uncertainty caused by an intermittent operation process is avoided, the preparation process of the microcrystalline glass becomes simple, and the production efficiency is improved. And integrated and continuous production of microcrystalline glass production is realized.

Description

Technical Field

[0001] This application relates to the field of glass-ceramic technology, and more specifically, to an integrated continuous heat treatment system for glass-ceramic. Background Technology

[0002] Microcrystalline glass is a material that lies between glass and ceramic, formed by the uniform precipitation of crystals on the surface or throughout a glass substrate after heat treatment. Compared to glass, microcrystalline glass exhibits significantly improved mechanical properties, such as mechanical strength and bending resistance. Therefore, it is increasingly widely used in cover glass for consumer electronics and automotive displays.

[0003] The creation of microcrystalline glass involves several steps, including melting the glass substrate, annealing the glass substrate, and heat treatment. However, the process from molding to crystallization is often intermittent, requiring transfer from one piece of equipment to another. This results in a complex process that is time-consuming, labor-intensive, and physically demanding for workers.

[0004] Therefore, existing technologies still need improvement. Utility Model Content

[0005] The purpose of this application is to provide an integrated continuous heat treatment system for microcrystalline glass to solve the problem of low production efficiency caused by the intermittent operation in the glass forming and crystallization process in the existing microcrystalline glass preparation process.

[0006] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0007] An integrated continuous heat treatment system for microcrystalline glass, comprising:

[0008] Annealing equipment, used for annealing base glass;

[0009] At least one nucleation and crystallization heat treatment device is provided for nucleating and crystallizing the annealed base glass; the nucleation and crystallization heat treatment device is located at the discharge end of the annealing treatment device;

[0010] A transfer device is used to transfer the annealed base glass to the nucleation crystallization heat treatment device;

[0011] The annealing treatment device and the nucleation and crystallization heat treatment device are connected by an automated feeding system or a transfer device.

[0012] The following are preferred technical solutions of this utility model, but are not intended to limit the technical solutions provided by this invention. Through the following preferred technical solutions, the purpose and beneficial effects of this invention can be better achieved and realized.

[0013] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass is provided with an AOI inspection device at the discharge end of the annealing device.

[0014] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes an annealing device comprising: a first conveying mechanism and an annealing tunnel for annealing the base glass, the annealing tunnel spanning above the first conveying mechanism, and the annealing tunnel being provided with a horizontal first heating device and a vertical first ventilation device.

[0015] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes several sub-regions within the annealing tunnel, and each sub-region corresponds to a temperature range.

[0016] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes a nucleation and crystallization heat treatment device comprising: a second conveying mechanism for a drying tunnel for nucleating and crystallizing the annealed base glass, the drying tunnel spanning above the second conveying mechanism; and a horizontal second heating device and a vertical second ventilation device disposed within the drying tunnel.

[0017] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes several sub-regions within the drying tunnel, and each sub-region corresponds to a temperature range.

[0018] As a preferred technical solution, in the integrated continuous heat treatment system for microcrystalline glass, the annealing tunnel and the drying tunnel are respectively divided into several sub-regions by heat insulation plates; the heat insulation plates in the annealing tunnel are spaced at intervals of ≥3 meters, and the heat insulation plates in the drying tunnel are spaced at intervals of ≤2 meters.

[0019] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes a first sub-region, a second sub-region, and a third sub-region within the annealing tunnel. The temperature range corresponding to the first sub-region is 1200℃-600℃; the temperature range corresponding to the second sub-region is 600℃-300℃; and the temperature range corresponding to the third sub-region is 300℃-80℃.

[0020] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes a fourth sub-region, a fifth sub-region, a sixth sub-region, and a seventh sub-region within the drying tunnel; the fourth sub-region corresponds to a temperature range of 1000℃-900℃; the fifth sub-region corresponds to a temperature range of 900℃-500℃; the sixth sub-region corresponds to a temperature range of 500℃-300℃; and the seventh sub-region corresponds to a temperature range of 400℃-80℃.

[0021] As a preferred technical solution, the integrated continuous heat treatment system for microcrystalline glass includes three sets of nucleation and crystallization heat treatment devices, and the process regime of each set of nucleation and crystallization heat treatment devices is independent of each other.

[0022] The beneficial effects of the integrated continuous heat treatment system for microcrystalline glass provided in this application are at least as follows:

[0023] This application combines the base glass annealing section with the nucleation and crystallization heat treatment section, achieving end-to-end control of glass-ceramics from melting to finished product. This avoids the uncertainties associated with intermittent processes, simplifying the glass-ceramic manufacturing process and enabling integrated and continuous production. It is suitable for mass production of glass-ceramic materials used in consumer electronics products and automotive display cover plates. A transfer station between the annealing and nucleation / crystallization sections allows for adjustment of the production cycle, adapting to large-scale, batch production. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a three-dimensional schematic diagram of an integrated continuous heat treatment system for microcrystalline glass provided in an embodiment of this application.

[0026] Figure 2 This is a top view of an integrated continuous heat treatment system for microcrystalline glass provided in an embodiment of this application.

[0027] Figure 3 An annealing tunnel provided in an embodiment of this application.

[0028] Figure 4 This is a top view of the annealing tunnel provided in an embodiment of this application.

[0029] Figure 5a Provided for the embodiments of this application Figure 4 Cross-sectional view of the intermediate annealing tunnel along the BB direction;

[0030] Figure 5b Provided for the embodiments of this application Figure 4 Cross-sectional view of the intermediate annealing tunnel along the CC direction;

[0031] Figure 5c Provided for the embodiments of this application Figure 4 Cross-sectional view of the intermediate annealing tunnel along the DD direction;

[0032] Figure 6 This is a schematic diagram of the transfer device structure provided in the embodiments of this application;

[0033] Figure 7 This is a schematic diagram of the AOI inspection device provided in an embodiment of this application. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0035] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0036] Please see Figure 1 and Figure 2 This application provides an integrated continuous heat treatment system for microcrystalline glass, including: an annealing device 10 for annealing base glass, a nucleation and crystallization heat treatment device 20 for nucleating and crystallizing the annealed base glass, a transfer device 30 for transferring the annealed base glass to the nucleation and crystallization heat treatment device, and an AOI (automatic optical inspection) device 40 for quality inspection of the annealed base glass, wherein the annealing device 10 and the nucleation and crystallization heat treatment device 20 are connected by an automated feeding system or the transfer device 30.

[0037] This invention integrates the nucleation crystallization device with the annealing device, directly transferring the annealed base glass to the nucleation crystallization heat treatment device. This transforms the originally intermittent process into a continuous operation, improving production efficiency. Furthermore, while the base glass needs to be heated during nucleation crystallization, the energy required for heating is saved because the annealed glass still retains a certain temperature, thus reducing production costs.

[0038] In one implementation of this utility model, the annealing treatment apparatus 10 includes: a first conveying mechanism 100, an annealing tunnel 110 spanning above the first conveying mechanism 100, a first heating device 111 and a first ventilation device 112 disposed within the annealing tunnel 110, wherein the first heating device 111 is horizontally disposed within the annealing tunnel, and the first ventilation device 112 is vertically disposed within the annealing tunnel (which can be understood as having a ventilation opening at the top of the annealing tunnel). The number of the first heating device 111 and the first ventilation device 112 can be set according to actual needs. The first heating device 111 can be hot air heating, that is, a heating pipe is set within the annealing tunnel, and hot air is introduced into the heating pipe; of course, it can also be electric heating. The first ventilation device 112 can be an external fan for forced ventilation. The first conveying mechanism 100 can be a chain or belt conveyor.

[0039] In one implementation of this utility model, combined with Figures 4 to 5c The annealing tunnel 110 is divided into multiple sub-regions 1130 by the heat insulation plate 113. Each region corresponds to a different temperature range. The heat insulation plates in the annealing tunnel are spaced at intervals of ≥3 meters. By setting different temperature control ranges, precise temperature control can be achieved, which is beneficial to the annealing of the base glass.

[0040] For example, molten glass flows out of the storage tank 50 and into the forming mold, which, along with the first conveying mechanism 100, passes through the inlet 114 (see [link to inlet]) located on the annealing tunnel. Figure 3 The glass flows into the annealing tunnel, whose interior space is divided into three continuous sub-regions. One sub-region corresponds to a temperature range of 1200℃-600℃ with a cooling rate of 1-15℃ / min; another sub-region corresponds to a temperature range of 600℃-300℃ with a cooling rate of 1-10℃ / min; and the third sub-region corresponds to a temperature range of 300℃-80℃ with a cooling rate of 1-5℃ / min. Insulation panels are spaced 4 meters apart, resulting in the annealed base glass. It should be noted that entrances and exits for the glass are provided in both the annealing tunnel and the nucleation and crystallization drying tunnel.

[0041] In one embodiment of this utility model, the nucleation and crystallization heat treatment apparatus 20 includes: a second conveying mechanism 200, a drying tunnel 210 spanning above the second conveying mechanism 200, a second heating device and a second ventilation device disposed within the drying tunnel, wherein the second heating device is horizontally disposed within the drying tunnel, and the second ventilation device is vertically disposed within the drying tunnel. The second conveying mechanism 200 can be a chain or belt conveyor. It is readily understood that the structure of the second conveying mechanism can be the same as or different from that of the first conveying mechanism.

[0042] In one implementation of this invention, the interior of the drying tunnel is divided into multiple continuous sub-regions by heat insulation plates, each sub-region corresponding to a different temperature range, and the interval between the heat insulation plates within the drying tunnel is ≤2 meters. By setting different temperature control ranges, precise temperature control can be achieved, which is beneficial to the nucleation and crystallization of the base glass and improves the performance of the microcrystalline glass.

[0043] For example, the internal space of the drying tunnel is divided into four continuous sub-regions by heat insulation panels. The temperature ranges corresponding to each sub-region are 1000℃-900℃ with a cooling rate of 3-15℃ / min; 900℃-500℃ with a cooling rate of 1-8℃ / min; 500℃-300℃ with a cooling rate of 1-5℃ / min; and 400℃-80℃ with a cooling rate of 1-3℃ / min.

[0044] In one implementation of this utility model, the annealing treatment device 10 can be configured as one set, while the nucleation and crystallization heat treatment device can be configured as multiple sets, such as three sets. That is, one annealing treatment device can correspond to three sets of nucleation and crystallization heat treatment devices. By setting up three sets of nucleation and crystallization heat treatment devices, they can be controlled separately according to different preparation processes, thereby improving production efficiency. It is easy to understand that the control processes of the three sets of nucleation and crystallization heat treatment devices can also be the same.

[0045] In one embodiment of this utility model, a transfer device 30 is provided between the annealing treatment device and the nucleation crystallization heat treatment device. The transfer device can be as follows: Figure 6 The robotic arm shown transfers the annealed base glass to the nucleation and crystallization heat treatment unit. Automatic loading and uninterrupted operation are achieved through a transfer device. It should be noted that the specific structure of the robotic arm is not limited here. An AOI inspection device 40 is used for quality inspection of the annealed base glass, such as... Figure 7 As shown, it includes a CCD camera 400, and the specific structure of the AOI inspection device therein is not limited here.

[0046] In summary, this application provides an integrated continuous heat treatment system for microcrystalline glass, comprising: an annealing device for annealing base glass; a nucleation and crystallization heat treatment device for nucleating and crystallizing the annealed base glass; a transfer device for transferring the annealed base glass to the nucleation and crystallization heat treatment device; and an AOI inspection device for quality inspection of the annealed base glass. The annealing device and the nucleation and crystallization heat treatment device are connected by an automated feeding system via a production line or the transfer device. This application combines the base glass annealing section with the nucleation and crystallization heat treatment section, achieving end-to-end control of microcrystalline glass production, from melting to finished product. This avoids the uncertainties caused by intermittent operation processes, simplifies the microcrystalline glass preparation process, and realizes integrated and continuous production of microcrystalline glass. It is suitable for mass production of microcrystalline glass materials used in consumer electronics products and automotive display cover plates. The intermediate station between the annealing and nucleation / crystallization sections allows for adjustment of the production cycle, adapting to large-scale and batch production.

[0047] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A system for integrated continuous heat treatment of glass-ceramics, characterized in that it comprises: The application relates to a glass production line, which comprises: an annealing device for annealing base glass; at least one nucleation and crystallization heat treatment device for nucleating and crystallizing the annealed base glass; the nucleation and crystallization heat treatment device is arranged at the discharging end of the annealing device; a transfer device for transferring the annealed base glass to the nucleation and crystallization heat treatment device; the annealing device and the nucleation and crystallization heat treatment device are connected in a pipeline or the transfer device automatically feeds materials.

2. The glass-ceramic integrated continuous heat treatment system of claim 1, wherein, The discharging end of the annealing device is further provided with an AOI inspection device.

3. The glass-ceramic integrated continuous heat treatment system of claim 1, wherein, The annealing device comprises a first conveying mechanism and an annealing tunnel for annealing the base glass; the annealing tunnel is arranged above the first conveying mechanism, and the annealing tunnel is provided with a first horizontal heating device and a first vertical ventilation device.

4. The glass-ceramic integrated continuous heat treatment system of claim 3, wherein, The annealing tunnel is provided with a plurality of sub-regions, and each sub-region corresponds to a temperature interval.

5. The glass-ceramic integrated continuous heat treatment system of claim 1, wherein, The nucleation and crystallization heat treatment device comprises a second conveying mechanism and a baking tunnel for nucleating and crystallizing the annealed base glass; the baking tunnel is arranged above the second conveying mechanism; and the baking tunnel is provided with a second horizontal heating device and a second vertical ventilation device.

6. The glass-ceramic integrated continuous heat treatment system of claim 5, wherein, The baking tunnel is provided with a plurality of sub-regions, and each sub-region corresponds to a temperature interval.

7. The glass-ceramic integrated continuous heat treatment system of claim 4 or claim 6, wherein, The annealing tunnel and the baking tunnel are respectively divided into a plurality of sub-regions by heat insulation plates; the annealing tunnel is provided with heat insulation plates with an interval of greater than or equal to 3 meters, and the baking tunnel is provided with heat insulation plates with an interval of less than or equal to 2 meters.

8. The glass-ceramic integrated continuous heat treatment system of claim 7, wherein, The annealing tunnel comprises a first sub-region, a second sub-region and a third sub-region; the first sub-region corresponds to a temperature interval of 1200-600 DEG C; the second sub-region corresponds to a temperature interval of 600-300 DEG C; and the third sub-region corresponds to a temperature interval of 300-80 DEG C.

9. The glass-ceramic integrated continuous heat treatment system of claim 7, wherein, The baking tunnel comprises a fourth sub-region, a fifth sub-region, a sixth sub-region and a seventh sub-region; the fourth sub-region corresponds to a temperature interval of 1000-900 DEG C; the fifth sub-region corresponds to a temperature interval of 900-500 DEG C; the sixth sub-region corresponds to a temperature interval of 500-300 DEG C; and the seventh sub-region corresponds to a temperature interval of 400-80 DEG C.

10. The glass-ceramic integrated continuous heat treatment system of claim 1, wherein, The nucleation and crystallization heat treatment device comprises three sets of nucleation and crystallization heat treatment devices, and the process systems of the three sets of nucleation and crystallization heat treatment devices are independent of each other.

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