Thermal radiation forming device and flexible glass production line

Abstract

The present application relates to the technical field of flexible glass production. Disclosed in the embodiments are a thermal radiation forming device and a flexible glass production line. The thermal radiation forming device comprises an air outlet temperature control mechanism and a thermally-equalizing nozzle. The thermally-equalizing nozzle comprises a ventilation pipe and a thermally-equalizing plate. One end of the ventilation pipe is connected to the air outlet temperature control mechanism, and the other end of the ventilation pipe is connected to the thermally-equalizing plate. An air return channel is provided in the ventilation pipe. The air outlet temperature control mechanism is configured to feed air into the ventilation pipe at a preset temperature, a preset speed and a preset flow rate, so that the airflow flows out through the air return channel under the blocking effect of the thermally-equalizing plate. The thermally-equalizing plate is configured to form a temperature field when the airflow passes therethrough, so as to perform thermal radiation on a flexible glass tape undergoing forming. The thermal radiation forming device provided in the embodiments of the present application can achieve accurate thickness adjustment during a forming process, simplify production steps, improve production efficiency and reduce production costs, thereby facilitating mass production of flexible glass.

Description

A thermal radiation forming device and a flexible glass production line

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411912212.7, filed on December 24, 2024, entitled "A Thermal Radiation Forming Apparatus and a Flexible Glass Production Line", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of flexible glass production technology, and more specifically, to a thermal radiation forming apparatus and a flexible glass production line. Background Technology

[0004] Currently, with the rapid development of science and technology, flexible display technology has become an important force driving innovation in smart mobile terminals, greatly expanding the application scenarios and possibilities of various electronic devices. From wearable devices to foldable smartphones, flexible glass, with its unique lightweight, thin, and flexible properties, brings users an unprecedented visual experience and portability, which is unmatched by traditional rigid display materials. Currently, flexible glass is generally formed first through a slit-drawing process, and then its thickness is adjusted through methods such as chemical etching. This process is cumbersome, inefficient, and costly, severely hindering the widespread adoption and application of flexible glass.

[0005] In view of this, designing and manufacturing a thermal radiation forming device and a flexible glass production line that can precisely adjust the thickness distribution and improve production efficiency is particularly important in the production of flexible glass.

[0006] Application content

[0007] The purpose of this application is to provide a thermal radiation forming device that can achieve precise thickness adjustment during the forming process, simplify production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass.

[0008] Another objective of this application is to provide a flexible glass production line that enables precise thickness adjustment during the forming process, simplifies production steps, improves production efficiency, reduces production costs, and facilitates the mass production of flexible glass.

[0009] This application is implemented using the following technical solution.

[0010] A thermal radiation forming device includes an air outlet temperature control mechanism and a heat spreader nozzle. The heat spreader nozzle includes a ventilation pipe and a heat spreader plate. One end of the ventilation pipe is connected to the air outlet temperature control mechanism, and the other end is connected to the heat spreader plate. A return air channel is provided inside the ventilation pipe. The air outlet temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation pipe, so that the airflow flows out through the return air channel under the obstruction of the heat spreader plate. The heat spreader plate is configured to form a temperature field when the airflow passes through, so as to perform thermal radiation on the formed flexible glass strip.

[0011] Optionally, the heat spreader and the flexible glass strip are arranged in parallel and spaced apart, with the distance between the heat spreader and the flexible glass strip being 50mm to 180mm.

[0012] Optionally, the ventilation duct includes an outer duct and an inner duct. The outer duct is fitted over the inner duct, and the outer duct and the inner duct are spaced apart to form a return air channel. One end of the inner duct is connected to the outlet air temperature control mechanism, and the other end is spaced apart from the heat spreader. The heat spreader is sealed to one end of the outer duct. The outlet air temperature control mechanism is configured to allow air at a preset temperature to flow into the inner duct, so that the airflow flows out through the return air channel under the obstruction of the heat spreader.

[0013] Optionally, the diameter of the inner duct gradually decreases in the air inlet direction, the diameter of the outer duct gradually increases in the air return direction, and the cross-sectional area of ​​the air return channel is the same everywhere in the air return direction.

[0014] Optionally, the inner tube includes a first straight section, a constricted section, and a second straight section connected in sequence. The first straight section and the second straight section are coaxially arranged. The diameter of the first straight section is larger than the diameter of the second straight section. The first straight section is connected to the air outlet temperature control mechanism. The constricted section is arranged in an arc shape or a straight line.

[0015] Optionally, the diameter of the inner duct decreases and then increases in the air inlet direction, the diameter of the outer duct decreases and then increases in the air return direction, and the cross-sectional area of ​​the air return channel is the same everywhere in the air return direction.

[0016] Optionally, the inner tube includes a third straight section, a tapering section, a expanding section, and a fourth straight section connected in sequence. The third straight section and the fourth straight section are coaxially arranged, and the diameter of the third straight section is equal to the diameter of the fourth straight section. The third straight section is connected to the outlet air temperature control mechanism, and the tapering section and the expanding section are both arc-shaped or straight-lined.

[0017] Optionally, the heat dissipation nozzle includes a first heat dissipation nozzle and a second heat dissipation nozzle arranged at intervals. The preset temperature includes a first preset temperature and a second preset temperature. The first preset temperature is lower than the second preset temperature. The air outlet temperature control mechanism is configured to allow airflow at the first preset temperature to enter the first heat dissipation nozzle and is also configured to allow airflow at the second preset temperature to enter the second heat dissipation nozzle.

[0018] Optionally, the diameter of the inner tube in the first heat-spreading nozzle gradually decreases in the direction from the air outlet temperature control mechanism to the heat-spreading plate, and the diameter of the inner tube in the second heat-spreading nozzle first decreases and then increases in the direction from the air outlet temperature control mechanism to the heat-spreading plate.

[0019] Optionally, there are multiple first heat-spreading nozzles, which are divided into two groups. The two groups of first heat-spreading nozzles are arranged opposite each other on both sides of the flexible glass strip, with multiple first heat-spreading nozzles in each group arranged in parallel and spaced apart. There are also multiple second heat-spreading nozzles, which are divided into two groups. The two groups of second heat-spreading nozzles are arranged opposite each other on both sides of the flexible glass strip, with multiple second heat-spreading nozzles in each group arranged in parallel and spaced apart.

[0020] Optionally, multiple first heat-equalizing nozzles in each group are arranged in a row, and multiple second heat-equalizing nozzles in each group are arranged in four rows, with one row of first heat-equalizing nozzles positioned between two rows of second heat-equalizing nozzles and another two rows of second heat-equalizing nozzles.

[0021] Optionally, the thermal radiation forming apparatus also includes a mounting frame on which the heat dissipation nozzle is mounted, the mounting frame being configured to be positioned on the side of the flexible glass strip.

[0022] A flexible glass production line includes the aforementioned thermal radiation forming device. The thermal radiation forming device includes an outlet air temperature control mechanism and a heat spreader nozzle. The heat spreader nozzle includes a ventilation pipe and a heat spreader plate. One end of the ventilation pipe is connected to the outlet air temperature control mechanism, and the other end is connected to the heat spreader plate. A return air channel is provided inside the ventilation pipe. The outlet air temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation pipe, so that the airflow flows out through the return air channel under the obstruction of the heat spreader plate. The heat spreader plate is configured to form a temperature field when the airflow passes through, so as to perform thermal radiation on the formed flexible glass strip.

[0023] The thermal radiation forming apparatus and flexible glass production line provided in this application have the following beneficial effects:

[0024] The thermal radiation forming apparatus provided in this application includes a heat spreader nozzle comprising a ventilation duct and a heat spreader plate. One end of the ventilation duct is connected to an outlet air temperature control mechanism, and the other end is connected to the heat spreader plate. A return air channel is provided inside the ventilation duct. The outlet air temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation duct, so that the airflow flows out through the return air channel under the obstruction of the heat spreader plate. The heat spreader plate is configured to form a temperature field when the airflow passes through, thereby radiating heat onto the formed flexible glass strip. Compared with the prior art, the thermal radiation forming apparatus provided in this application, due to the use of a ventilation duct connecting the outlet air temperature control mechanism and the heat spreader plate, and a return air channel provided inside the ventilation duct, can achieve precise thickness adjustment during the forming process, simplify production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass.

[0025] The flexible glass production line provided in this application includes a thermal radiation forming device, which can achieve precise thickness adjustment during the forming process, simplify production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the structure of the thermal radiation forming device provided in the embodiment of this application when radiating a flexible glass strip;

[0028] Figure 2 is a schematic diagram of the structure of the flexible glass strip used in the thermal radiation forming apparatus provided in the embodiments of this application;

[0029] Figure 3 is a schematic diagram of the first and second heat-spreading nozzles installed on the mounting frame in the thermal radiation forming apparatus provided in the embodiment of this application.

[0030] Figure 4 is a schematic diagram of the structure of the first heat dissipation nozzle in the thermal radiation forming apparatus provided in the embodiment of this application;

[0031] Figure 5 is a cross-sectional view of the first heat-spreading nozzle in the thermal radiation forming apparatus provided in the embodiment of this application;

[0032] Figure 6 is a schematic diagram of the structure of the second heat dissipation nozzle in the thermal radiation forming apparatus provided in the embodiment of this application;

[0033] Figure 7 is a cross-sectional view of the second heat-spreading nozzle in the thermal radiation forming apparatus provided in the embodiment of this application.

[0034] Icons: 100 - Thermal radiation forming device; 110 - Heat dissipation nozzle; 111 - Outer pipe; 112 - Inner pipe; 1121 - First straight section; 1122 - Narrowing section; 1123 - Second straight section; 1124 - Third straight section; 1125 - Gradually narrowing section; 1126 - Gradually expanding section; 1127 - Fourth straight section; 113 - Heat dissipation plate; 114 - Return air duct; 120 - Mounting frame; 130 - First heat dissipation nozzle; 140 - Second heat dissipation nozzle; 200 - Flexible glass strip; 210 - First thick area; 220 - Thin area; 230 - Second thick area. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this application, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," "third," etc., are only configured to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0041] Referring to Figures 1 to 7 (the hollow arrows in Figures 5 and 7 indicate the airflow direction), this application embodiment provides a flexible glass production line (not shown) configured to produce flexible glass. It enables precise thickness adjustment during the forming process, simplifies production steps, improves production efficiency, reduces production costs, and facilitates the mass production of flexible glass.

[0042] It should be noted that the flexible glass production line includes a discharge device (not shown in the figure) and a thermal radiation forming device 100. The discharge device is located above the thermal radiation forming device 100 and is configured to discharge and form the molten glass, allowing the formed flexible glass strip 200 to pass downwards through the thermal radiation forming device 100. The thermal radiation forming device 100 is configured to precisely control the temperature of the flexible glass strip 200 to achieve precise thickness adjustment during the forming process. Compared to the existing technology of first drawing and forming the strip and then chemically etching to adjust the thickness, this method effectively simplifies the production steps, improves production efficiency, reduces production costs, and facilitates the mass production of flexible glass.

[0043] Furthermore, during the downward flow of the flexible glass strip 200, since it is not completely solidified, its fluidity can be altered by controlling the ambient temperature, allowing it to cool and solidify faster or slower, thereby achieving precise thickness adjustment. Specifically, when the ambient temperature is high, the viscosity of the flexible glass strip 200 decreases, and its fluidity increases. In this case, the flexible glass strip 200 cools and solidifies more slowly, resulting in a thicker strip. Conversely, when the ambient temperature is low, the viscosity of the flexible glass strip 200 increases, and its fluidity decreases. In this case, the flexible glass strip 200 cools and solidifies more quickly, resulting in a thinner strip. In this application, the thermal radiation forming device 100 precisely controls the ambient temperature of the flexible glass strip 200 through thermal radiation, thereby precisely adjusting the thickness distribution of the flexible glass strip 200. This method is stable, reliable, and highly efficient.

[0044] The thermal radiation forming device 100 includes an outlet air temperature control mechanism (not shown) and a heat-spreading nozzle 110. The heat-spreading nozzle 110 includes a ventilation duct (not shown) and a heat-spreading plate 113. One end of the ventilation duct is connected to the outlet air temperature control mechanism, and the other end is connected to the heat-spreading plate 113. A return air channel 114 is provided inside the ventilation duct. The outlet air temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation duct, so that the airflow flows out through the return air channel 114 under the obstruction of the heat-spreading plate 113. The heat-spreading plate 113 is configured to form a temperature field when the airflow passes through, thereby radiating heat onto the formed flexible glass strip 200. In this way, by changing the preset temperature of the airflow, the temperature field formed by the heat-spreading plate 113 can be quickly adjusted, thereby precisely controlling the ambient temperature of the flexible glass strip 200 and, consequently, precisely adjusting the thickness distribution of the flexible glass strip 200.

[0045] Furthermore, the ventilation duct includes an outer duct 111 and an inner duct 112. The outer duct 111 is sleeved outside the inner duct 112, and the outer duct 111 and the inner duct 112 are spaced apart to form a return air channel 114. One end of the inner duct 112 is connected to the outlet air temperature control mechanism, and the other end is spaced apart from the heat spreader 113. The heat spreader 113 is sealed to one end of the outer duct 111. The outlet air temperature control mechanism is configured to allow airflow at a preset temperature to enter the inner duct 112, so that the airflow flows out through the return air channel 114 under the obstruction of the heat spreader 113. The heat spreader 113 is configured to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass strip 200.

[0046] Furthermore, the heat spreader 113 and the flexible glass strip 200 are arranged parallel to each other at intervals, so that the temperature field formed on the heat spreader 113 can uniformly radiate heat to the flexible glass strip 200, improving the radiation effect and thus improving the temperature control accuracy and thickness adjustment accuracy. In this embodiment, the flexible glass strip 200 flows downward in a vertical direction, and the heat spreader 113 is arranged on a vertical plane.

[0047] Specifically, the distance between the heat spreader 113 and the flexible glass strip 200 is 50mm to 180mm. A reasonable distance between the heat spreader 113 and the flexible glass strip 200 can improve the uniformity of heat radiation and ensure the heat radiation effect. If the distance between the heat spreader 113 and the flexible glass strip 200 is too small, the heat from the heat spreader 113 will be directly transferred to the flexible glass strip 200 through the air. The excessively rapid heat transfer will affect the curing effect of the flexible glass strip 200, thereby affecting the product quality. If the distance between the heat spreader 113 and the flexible glass strip 200 is too large, the heat radiation effect of the heat spreader 113 on the flexible glass strip 200 will be weak, and it will not be able to play a role in precise temperature control, and thus it will be impossible to accurately adjust the thickness distribution of the flexible glass strip 200.

[0048] In an optional embodiment, the heat spreader 113 is made of silicon carbide heat spreader material, which has strong radiation capability and can form a stable temperature field under the action of airflow to radiate heat to the flexible glass strip 200.

[0049] The outlet air temperature control mechanism includes a fan (not shown) and a heat exchanger (not shown). The fan is connected to the inner tube 112 through the heat exchanger. The fan is configured to blow air outward, and the heat exchanger is configured to exchange heat with the airflow so that the airflow temperature reaches the preset temperature, thereby realizing the function of introducing the preset temperature airflow into the inner tube 112.

[0050] Optionally, the thermal radiation forming apparatus 100 further includes a mounting frame 120. A heat-diffusing nozzle 110 is mounted on the mounting frame 120, which is configured to be disposed on the side of the flexible glass strip 200. The mounting frame 120 can fix the position of the heat-diffusing nozzle 110 so that the heat-diffusing nozzle 110 can form a stable temperature field, thereby uniformly radiating heat to the side of the flexible glass strip 200.

[0051] Furthermore, there are multiple heat-spreading nozzles 110, which are divided into two groups. The two groups of heat-spreading nozzles 110 are arranged opposite each other on both sides of the flexible glass strip 200. In each group, multiple heat-spreading nozzles 110 are arranged in parallel and spaced apart. The two groups of heat-spreading nozzles 110 work together to simultaneously radiate heat to both sides of the flexible glass strip 200, so that the same position on both sides of the flexible glass strip 200 is at the same ambient temperature, ensuring the uniformity of the thickness adjustment of the flexible glass strip 200, thereby ensuring product quality.

[0052] It is worth noting that flexible glass is divided into uniform thickness flexible glass and unequal thickness flexible glass. The thermal radiation forming device 100 can form both uniform thickness and unequal thickness flexible glass. When forming uniform thickness flexible glass using the thermal radiation forming device 100, the preset temperature of the airflow entering the multiple heat-spreading nozzles 110 is the same, and the temperature field formed by the multiple heat-spreading nozzles 110 is the same, so as to apply equivalent thermal radiation to the flexible glass strip 200, ensuring that the thickness of the flexible glass strip 200 is equal everywhere, thereby obtaining uniform thickness flexible glass and improving the thickness uniformity of the uniform thickness flexible glass. When forming unequal thickness flexible glass using the thermal radiation forming device 100, the preset temperature of the airflow entering the multiple heat-spreading nozzles 110 is different, and the temperature field formed by the multiple heat-spreading nozzles 110 is different, so as to apply unequal thermal radiation to the flexible glass strip 200, making the thickness of the flexible glass strip 200 different everywhere, thereby obtaining unequal thickness flexible glass.

[0053] In this embodiment, the thermal radiation forming apparatus 100 is configured to form flexible glass of unequal thickness. The heat equalization nozzle 110 includes a first heat equalization nozzle 130 and a second heat equalization nozzle 140 spaced apart. The preset temperature includes a first preset temperature and a second preset temperature. Specifically, the first preset temperature is lower than the second preset temperature. The outlet air temperature control mechanism is configured to allow airflow at the first preset temperature into the first heat equalization nozzle 130 and to allow airflow at the second preset temperature into the second heat equalization nozzle 140, so that the temperature field formed by the first heat equalization nozzle 130 is lower than the temperature field formed by the second heat equalization nozzle 140. This results in the thickness of the portion of flexible glass strip 200 corresponding to the first heat equalization nozzle 130 being less than the thickness of the portion of flexible glass strip 200 corresponding to the second heat equalization nozzle 140. In this way, during the process of the formed flexible glass strip 200 passing through the thermal radiation forming apparatus 100, two portions of flexible glass strip 200 with different thicknesses are formed, thereby obtaining flexible glass of unequal thickness.

[0054] However, this is not the only option. In another embodiment, the heat-spreading nozzle 110 may further include a third heat-spreading nozzle, and the preset temperature may also include a third preset temperature. The second preset temperature is lower than the third preset temperature. In this case, the outlet air temperature control mechanism is configured to allow airflow at the third preset temperature to enter the third heat-spreading nozzle, so that the temperature field formed by the second heat-spreading nozzle 140 is lower than the temperature field formed by the third heat-spreading nozzle. This results in the thickness of the portion of flexible glass strip 200 corresponding to the second heat-spreading nozzle 140 being less than the thickness of the portion of flexible glass strip 200 corresponding to the third heat-spreading nozzle. The three-part flexible glass strip 200 with different thicknesses is formed. In another embodiment, the heat dissipation nozzle 110 may also include a third heat dissipation nozzle and a fourth heat dissipation nozzle. The preset temperature may also include a third preset temperature and a fourth preset temperature. The second preset temperature is lower than the third preset temperature, and the third preset temperature is lower than the fourth preset temperature. In this case, the thermal radiation forming device 100 can form a four-part flexible glass strip 200 with different thicknesses. The number of airflows with different preset temperatures introduced into the various heat dissipation nozzles 110 and the number of different thickness portions in the flexible glass strip 200 are not specifically limited.

[0055] It should be noted that, due to structural limitations, the airflow temperature output by the outlet temperature control mechanism is within a certain temperature range; that is, the airflow output by the outlet temperature control mechanism has a maximum temperature and a minimum temperature. When using a conventional straight-cylinder heat spreader nozzle 110, if the airflow output by the outlet temperature control mechanism has reached the minimum temperature, but the thickness of the flexible glass strip 200 is still relatively thick (not meeting the production requirement for thinner strips), then the shape of the heat spreader nozzle 110 needs to be improved. Similarly, when using a conventional straight-cylinder heat spreader nozzle 110, if the airflow output by the outlet temperature control mechanism has reached the maximum temperature, but the thickness of the flexible glass strip 200 is still relatively thin (not meeting the production requirement for thicker strips), then the shape of the heat spreader nozzle 110 also needs to be improved. By adopting the heat dissipation nozzles 110 with various shapes in this solution, the temperature regulation range of the heat dissipation plate 113 can be further increased based on the airflow temperature range output by the original air outlet temperature control mechanism. This breaks the limitations of temperature regulation caused by the original structural constraints, thereby increasing the temperature range radiated on the flexible glass strip 200, further improving the temperature control of the flexible glass strip 200, and achieving precise thickness adjustment.

[0056] In an optional embodiment, the first preset temperature is low (close to or equal to the minimum temperature), and the first heat dissipation nozzle 130 is tapered to rapidly cool the corresponding position on the flexible glass strip 200, so that it can solidify faster and form a thinner thickness to meet production requirements.

[0057] Specifically, in the first heat exchanger nozzle 130, the diameter of the inner pipe 112 gradually decreases in the air inlet direction, and the diameter of the outer pipe 111 gradually increases in the air return direction. That is, the shape of the outer pipe 111 matches the shape of the inner pipe 112, and the cross-sectional area of ​​the return air passage 114 is equal everywhere in the air return direction. In this way, when the air outlet temperature control mechanism discharges air, the airflow at the first preset temperature flows towards the heat spreader 113 within the inner tube 112. During this process, as the diameter and cross-sectional area of ​​the inner tube 112 gradually decrease, the airflow velocity increases and the pressure decreases (according to Bernoulli's principle, the greater the airflow velocity, the lower the pressure). Therefore, the airflow can quickly reach the heat spreader 113 to rapidly remove its heat, achieving rapid cooling of the flexible glass strip 200 and accelerating its curing speed to form a thinner thickness. Subsequently, the airflow carrying the heat from the heat spreader 113 flows out through the return air channel 114. During this process, since the cross-sectional area of ​​the return air channel 114 is equal everywhere, the return airflow flows outward at a uniform speed, achieving airflow leakage. In this way, the tapered first heat spreader nozzle 130 can achieve the forming of a thinner flexible glass strip 200 compared to the conventional straight-cylinder heat spreader nozzle 110, thus meeting production requirements.

[0058] In the first heat-spreading nozzle 130, the inner tube 112 includes a first straight section 1121, a constricted section 1122, and a second straight section 1123 connected in sequence. The constricted section 1122 is disposed between the first straight section 1121 and the second straight section 1123. In this embodiment, the first straight section 1121, the constricted section 1122, and the second straight section 1123 are integrally formed to improve the connection strength. Specifically, the first straight section 1121 and the second straight section 1123 are coaxially arranged, and the diameter of the first straight section 1121 is larger than the diameter of the second straight section 1123. That is, the small end of the constricted section 1122 is connected to the second straight section 1123, and the large end of the constricted section 1122 is connected to the first straight section 1121. The first straight section 1121 is connected to the outlet air temperature control mechanism, and the second straight section 1123 is spaced apart from the heat spreader 113. The outlet air temperature control mechanism can introduce airflow at a first preset temperature into the first straight section 1121. The airflow velocity increases and the pressure decreases under the action of the constriction section 1122, and continues to flow into the second straight section 1123. The airflow passing through the second straight section 1123 is quickly blown to the heat spreader 113, and under the obstruction of the heat spreader 113, it flows back through the return air channel 114. During this process, the heat spreader 113 forms a lower temperature field under the action of the airflow at the first preset temperature, so as to quickly cool the flexible glass strip 200, accelerate its curing speed, and make it form a thinner thickness.

[0059] In this embodiment, the constriction section 1122 in the first heat-spreading nozzle 130 is arranged in a straight line. The straight constriction section 1122 can stably guide the airflow as it passes through, so as to increase the airflow velocity uniformly, avoid turbulence, and ensure the temperature uniformity of the heat-spreading plate 113. However, it is not limited to this. In other embodiments, the constriction section 1122 can also be arranged in an arc shape, which can also stably guide the airflow and ensure the temperature uniformity of the heat-spreading plate 113. The shape of the constriction section 1122 is not specifically limited.

[0060] In an optional embodiment, the second preset temperature is higher (close to or equal to the maximum temperature), and the second heat dissipation nozzle 140 is in a shape that first contracts and then expands to insulate or heat the corresponding position on the flexible glass strip 200, so that it solidifies more slowly, thereby forming a thicker thickness to meet production requirements.

[0061] Specifically, in the second heat-spreading nozzle 140, the diameter of the inner pipe 112 first decreases and then increases in the air inlet direction, while the diameter of the outer pipe 111 first decreases and then increases in the air return direction. That is, the shape of the outer pipe 111 matches the shape of the inner pipe 112, and the cross-sectional area of ​​the return air channel 114 is constant throughout the air return direction. Thus, when air is discharged from the outlet temperature control mechanism, the airflow at the second preset temperature first flows within the inner pipe 112 towards the heat-spreading plate 113. This process is divided into two stages. In the first stage, the diameter of the inner pipe 112 gradually decreases, and the cross-sectional area of ​​the inner pipe 112 also gradually decreases, leading to an increase in airflow velocity and a decrease in pressure, thereby increasing the airflow volume. When the airflow reaches the throat of the inner pipe 112 (the position with the smallest diameter in the inner pipe 112), the airflow velocity reaches its maximum. In the second stage, the diameter of the inner pipe 112 gradually increases, and the cross-sectional area of ​​the inner pipe 112... The cross-sectional area of ​​the heat exchanger gradually increases, leading to a decrease in airflow velocity and an increase in pressure. This prolongs the contact time between the airflow and the heat exchanger 113, ensuring that the heat from the airflow can be stably transferred to the heat exchanger 113, resulting in a better heating effect. This, in turn, achieves heat preservation or heating of the flexible glass strip 200, maintaining or slowing down its curing speed, and allowing it to form a thicker strip. Subsequently, the airflow that has lost some heat flows out through the return air channel 114. During this process, since the cross-sectional area of ​​the return air channel 114 is equal everywhere, the return airflow flows outward at a uniform speed, achieving airflow leakage. In this way, the first heat exchanger nozzle 130, which first narrows and then expands, can achieve the forming of a thicker flexible glass strip 200 compared to the conventional straight cylindrical heat exchanger nozzle 110, in order to meet production requirements.

[0062] In the second heat-spreading nozzle 140, the inner tube 112 includes a third straight section 1124, a tapering section 1125, a expanding section 1126, and a fourth straight section 1127 connected in sequence. The tapering section 1125 and the expanding section 1126 are both located between the third straight section 1124 and the fourth straight section 1127. In this embodiment, the third straight section 1124, the tapering section 1125, the expanding section 1126, and the fourth straight section 1127 are integrally formed to improve connection strength. Specifically, the third straight section 1124 and the fourth straight section 1127 are coaxially arranged, and the diameter of the third straight section 1124 is equal to the diameter of the fourth straight section 1127. That is, the larger end of the tapering section 1125 is connected to the third straight section 1124, the smaller end of the tapering section 1125 is connected to the smaller end of the expanding section 1126, and the larger end of the expanding section 1126 is connected to the fourth straight section 1127. The third straight section 1124 is connected to the outlet air temperature control mechanism, and the fourth straight section 1127 is spaced apart from the heat spreader 113. The outlet air temperature control mechanism can introduce airflow at a second preset temperature into the third straight section 1124. The airflow first increases in velocity and decreases in pressure under the action of the converging section 1125 to increase the air intake. Then, under the action of the expanding section 1126, the airflow decreases in velocity and increases in pressure to prolong the contact time between the airflow and the heat spreader 113. It then continues to flow into the fourth straight section 1127. The airflow passing through the fourth straight section 1127 is slowly blown to the heat spreader 113 and flows back through the return air channel 114 under the obstruction of the heat spreader 113. During this process, the heat spreader 113 forms a high-temperature field under the action of the airflow at the second preset temperature to insulate or heat the flexible glass strip 200, maintain or slow down its curing speed, and make it form a thicker thickness.

[0063] In this embodiment, in the second heat-spreading nozzle 140, both the converging section 1125 and the expanding section 1126 are arc-shaped to form a gourd-like shape. The gourd-shaped converging and expanding sections 1125 and 1126 can stably guide the airflow as it passes through, causing the airflow velocity to first increase and then decrease. This effectively prolongs the contact time between the airflow and the heat-spreading plate 113 while ensuring the airflow volume, improving the heating effect of the airflow on the heat-spreading plate 113, and ensuring the temperature uniformity of the heat-spreading plate 113. However, this is not the only embodiment. In other embodiments, the converging and expanding sections 1125 and 1126 can also be straight, similarly providing stable airflow guidance, increasing the airflow volume, improving the heating effect on the heat-spreading plate 113, and ensuring the temperature uniformity of the heat-spreading plate 113. The shape of the converging and expanding sections 1125 and 1126 is not specifically limited.

[0064] In this embodiment, the flexible glass strip 200 is divided into three regions along its width direction: a first thick region 210, a thin region 220, and a second thick region 230. The thickness of the first thick region 210 is equal to the thickness of the second thick region 230 and greater than the thickness of the thin region 220. The width of the first thick region 210 is equal to the width of the second thick region 230 and greater than the width of the thin region 220. Specifically, the first heat-spreading nozzle 130 is configured to form the thin region 220, and the second heat-spreading nozzle 140 is configured to form the first thick region 210 and the second thick region 230. The first heat-spreading nozzle 130 and the second heat-spreading nozzle 140 work together to achieve the production of flexible glass with unequal thicknesses.

[0065] Furthermore, there are multiple first heat-spreading nozzles 130, which are divided into two groups. The two groups of first heat-spreading nozzles 130 are arranged opposite each other on both sides of the flexible glass strip 200, with multiple first heat-spreading nozzles 130 arranged in parallel and spaced apart in each group. There are also multiple second heat-spreading nozzles 140, which are divided into two groups. The two groups of second heat-spreading nozzles 140 are arranged opposite each other on both sides of the flexible glass strip 200, with multiple second heat-spreading nozzles 140 arranged in parallel and spaced apart in each group. Both the multiple first heat-spreading nozzles 130 and the multiple second heat-spreading nozzles 140 are mounted on the mounting frame 120. Specifically, in each group, multiple first heat-spreading nozzles 130 are arranged in a row, and in each group, multiple second heat-spreading nozzles 140 are arranged in four rows. The first heat-spreading nozzles 130 in each row are disposed between two rows of second heat-spreading nozzles 140 and another two rows of second heat-spreading nozzles 140. One row of first heat-spreading nozzles 130 is configured as the thin region 220 of the formed flexible glass strip 200, the two rows of second heat-spreading nozzles 140 are configured as the first thick region 210 of the formed flexible glass strip 200, and the other two rows of second heat-spreading nozzles 140 are configured as the second thick region 230 of the formed flexible glass strip 200.

[0066] It should be noted that there are two outlet temperature control mechanisms. One outlet temperature control mechanism is connected to multiple first heat-spreading nozzles 130 and is configured to blow out airflow at a first preset temperature. The other outlet temperature control mechanism is connected to multiple second heat-spreading nozzles 140 and is configured to blow out airflow at a second preset temperature.

[0067] The thermal radiation forming apparatus 100 provided in this application embodiment includes a heat spreader 110 comprising a ventilation pipe and a heat spreader plate 113. One end of the ventilation pipe is connected to an outlet air temperature control mechanism, and the other end is connected to the heat spreader plate 113. A return air channel 114 is provided inside the ventilation pipe. The outlet air temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation pipe, so that the airflow flows out through the return air channel 114 under the obstruction of the heat spreader plate 113. The heat spreader plate 113 is configured to form a temperature field when the airflow passes through, thereby radiating heat onto the formed flexible glass strip 200. Compared with the prior art, the thermal radiation forming apparatus 100 provided in this application, due to the use of a ventilation pipe connected between the outlet air temperature control mechanism and the heat spreader plate 113, and a return air channel 114 provided inside the ventilation pipe, can achieve precise thickness adjustment during the forming process, simplify production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass. This results in high production efficiency and high economic benefits for the flexible glass production line.

[0068] The above are merely preferred embodiments of this application and are not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. Industrial applicability

[0069] In summary, this application provides a thermal radiation forming apparatus that can achieve precise thickness adjustment during the forming process, simplify production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass.

[0070] This application also provides a flexible glass production line that enables precise thickness adjustment during the forming process, simplifies production steps, improves production efficiency, reduces production costs, and facilitates the mass production of flexible glass.

Claims

1. A thermal radiation forming device, characterized in that, The device includes an air outlet temperature control mechanism and a heat spreader nozzle. The heat spreader nozzle includes a ventilation duct and a heat spreader plate. One end of the ventilation duct is connected to the air outlet temperature control mechanism, and the other end is connected to the heat spreader plate. A return air channel is provided inside the ventilation duct. The air outlet temperature control mechanism is configured to introduce airflow with a preset temperature, preset speed, and preset flow rate into the ventilation duct, so that the airflow flows out through the return air channel under the obstruction of the heat spreader plate. The heat spreader plate is configured to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass strip.

2. The thermal radiation forming apparatus according to claim 1, characterized in that, The heat spreader and the flexible glass strip are arranged in parallel and spaced apart, with the distance between the heat spreader and the flexible glass strip being 50mm to 180mm.

3. The thermal radiation forming apparatus according to claim 1 or 2, characterized in that, The ventilation duct includes an outer duct and an inner duct. The outer duct is sleeved outside the inner duct and spaced apart from the inner duct to form the return air channel. One end of the inner duct is connected to the outlet air temperature control mechanism, and the other end is spaced apart from the heat spreader. The heat spreader is sealed to one end of the outer duct. The outlet air temperature control mechanism is configured to allow airflow at a preset temperature to enter the inner duct, so that the airflow flows out through the return air channel under the obstruction of the heat spreader.

4. The thermal radiation forming apparatus according to claim 3, characterized in that, The diameter of the inner tube gradually decreases in the air inlet direction, the diameter of the outer tube gradually increases in the air return direction, and the cross-sectional area of ​​the air return channel is the same everywhere in the air return direction.

5. The thermal radiation forming apparatus according to claim 4, characterized in that, The inner tube includes a first straight section, a constricted section, and a second straight section connected in sequence. The first straight section and the second straight section are coaxially arranged. The diameter of the first straight section is larger than the diameter of the second straight section. The first straight section is connected to the air outlet temperature control mechanism. The constricted section is arranged in an arc shape or a straight line.

6. The thermal radiation forming apparatus according to any one of claims 3-5, characterized in that, The diameter of the inner tube decreases and then increases in the air inlet direction, the diameter of the outer tube decreases and then increases in the air return direction, and the cross-sectional area of ​​the air return channel is the same everywhere in the air return direction.

7. The thermal radiation forming apparatus according to claim 6, characterized in that, The inner tube includes a third straight section, a tapering section, a expanding section, and a fourth straight section connected in sequence. The third straight section and the fourth straight section are coaxially arranged, and the diameter of the third straight section is equal to the diameter of the fourth straight section. The third straight section is connected to the air outlet temperature control mechanism. Both the tapering section and the expanding section are arranged in an arc shape or a straight line.

8. The thermal radiation forming apparatus according to any one of claims 3-7, characterized in that, The heat equalization nozzle includes a first heat equalization nozzle and a second heat equalization nozzle arranged at intervals. The preset temperature includes a first preset temperature and a second preset temperature. The first preset temperature is less than the second preset temperature. The air outlet temperature control mechanism is configured to allow airflow at the first preset temperature to enter the first heat equalization nozzle, and is also configured to allow airflow at the second preset temperature to enter the second heat equalization nozzle.

9. The thermal radiation forming apparatus according to claim 8, characterized in that, The diameter of the inner tube in the first heat-spreading nozzle gradually decreases in the direction from the air outlet temperature control mechanism to the heat-spreading plate, while the diameter of the inner tube in the second heat-spreading nozzle first decreases and then increases in the direction from the air outlet temperature control mechanism to the heat-spreading plate.

10. The thermal radiation forming apparatus according to claim 8 or 9, characterized in that, The number of the first heat-spreading nozzles is multiple, and the multiple first heat-spreading nozzles are divided into two groups. The two groups of first heat-spreading nozzles are arranged opposite each other on both sides of the flexible glass strip, and the multiple first heat-spreading nozzles in each group are arranged in parallel and spaced apart. The number of the second heat-spreading nozzles is multiple, and the multiple second heat-spreading nozzles are divided into two groups. The two groups of second heat-spreading nozzles are arranged opposite each other on both sides of the flexible glass strip, and the multiple second heat-spreading nozzles in each group are arranged in parallel and spaced apart.

11. The thermal radiation forming apparatus according to claim 10, characterized in that, In each group, multiple first heat-spreading nozzles are arranged in a row, and in each group, multiple second heat-spreading nozzles are arranged in four rows. One row of first heat-spreading nozzles is positioned between two rows of second heat-spreading nozzles and another two rows of second heat-spreading nozzles.

12. The thermal radiation forming apparatus according to any one of claims 1-11, characterized in that, The thermal radiation forming apparatus further includes a mounting frame, on which the heat-spreading nozzle is mounted, and the mounting frame is configured to be disposed on the side of the flexible glass strip.

13. A flexible glass production line, characterized in that, Includes the thermal radiation forming apparatus as described in any one of claims 1-12.

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