Thermal radiation forming device and flexible glass production line

Abstract

The invention discloses a thermal radiation forming device and a flexible glass production line, and relates to the technical field of flexible glass production. The thermal radiation forming device comprises an air outlet temperature control mechanism and a soaking spray pipe. The soaking spray pipe comprises a ventilation pipe and a soaking plate, one end of the ventilation pipe is connected with the air outlet temperature control mechanism, the other end of the ventilation pipe is connected with the soaking plate, an air return channel is arranged in the ventilation pipe, and the air outlet temperature control mechanism is used for enabling airflow with preset temperature, preset speed and preset flow to flow into the ventilation pipe so that the airflow can flow out through the air return channel under the blocking effect of the soaking plate. The vapor chamber is used for forming a temperature field when airflow passes through so as to carry out heat radiation on the formed flexible glass tape. According to the thermal radiation forming device provided by the invention, accurate thickness adjustment can be realized in the forming process, the production steps are simplified, the production efficiency is improved, the production cost is reduced, and large-batch production of flexible glass is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible glass production, and in particular to a thermal radiation forming device and a flexible glass production line. Background Art

[0002] At present, with the rapid development of science and technology, flexible display technology has become an important force in promoting the innovation of smart mobile terminals, greatly expanding the application scenarios and possibilities of various electronic devices. From wearable devices to folding smartphones, flexible glass, with its unique light, thin and flexible characteristics, brings users unprecedented visual experience and portability, which is unmatched by traditional rigid display materials. Today's flexible glass is generally formed by slit pull-down, and then the thickness is adjusted by chemical etching and other methods. As a result, the production steps are cumbersome, the production efficiency is low, and the production cost is high, which seriously hinders the popularization and application of flexible glass.

[0003] In view of this, it is particularly important to design and manufacture a thermal radiation forming device and a flexible glass production line that can accurately adjust the thickness distribution and improve production efficiency, especially in the production of flexible glass. Summary of the invention

[0004] The object of the present invention is to provide a thermal radiation forming device that can achieve precise thickness adjustment during the forming process, simplify the production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass.

[0005] Another object of the present invention is to provide a flexible glass production line that can achieve precise thickness adjustment during the molding process, simplify production steps, improve production efficiency, reduce production costs, and facilitate mass production of flexible glass.

[0006] The present invention is achieved by adopting the following technical solutions.

[0007] A thermal radiation forming device comprises an air outlet temperature control mechanism and a soaking nozzle, the soaking nozzle comprises a ventilation pipe and a soaking plate, one end of the ventilation pipe is connected to the air outlet temperature control mechanism, and the other end is connected to the soaking plate, a return air channel is arranged in the ventilation pipe, the air outlet temperature control mechanism is used to flow air with a preset temperature, a preset speed and a preset flow rate into the ventilation pipe, so that the air flow flows out through the return air channel under the blocking effect of the soaking plate, and the soaking plate is used to form a temperature field when the air flow passes through, so as to radiate heat to the formed flexible glass strip.

[0008] Optionally, the vapor chamber and the flexible glass ribbon are arranged in parallel and spaced apart, and the spacing between the vapor chamber and the flexible glass ribbon is 50 mm to 180 mm.

[0009] Optionally, the ventilation duct includes an outer tube and an inner tube, the outer tube is sleeved on the outside of the inner tube, the outer tube and the inner tube are spaced apart from each other to form a return air channel, one end of the inner tube is connected to an air outlet temperature control mechanism, and the other end is spaced apart from a heat spreader, the heat spreader is sealed to one end of the outer tube, and the air outlet temperature control mechanism is used to direct airflow of a preset temperature into the inner tube so that the airflow can flow out through the return air channel under the blocking effect of the heat spreader.

[0010] Optionally, 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 return air channel is equal everywhere in the air return direction.

[0011] Optionally, the inner tube includes a first straight section, a necked 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, and the necked section is arranged in an arc shape or a straight line shape.

[0012] Optionally, the diameter of the inner tube first decreases and then increases in the air inlet direction, the diameter of the outer tube first decreases and then increases in the air return direction, and the cross-sectional area of ​​the return air channel is equal everywhere in the air return direction.

[0013] Optionally, the inner tube includes a third straight section, a tapered section, a gradually expanding section and a fourth straight section connected in sequence, the third straight section is coaxially arranged with the fourth straight section, 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, and the tapered section and the gradually expanding section are both arranged in an arc shape or a straight line shape.

[0014] Optionally, the heat equalizing nozzle includes a first heat equalizing nozzle and a second heat equalizing 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, and the air outlet temperature control mechanism is used to direct the airflow of the first preset temperature into the first heat equalizing nozzle, and is also used to direct the airflow of the second preset temperature into the second heat equalizing nozzle.

[0015] Optionally, the diameter of the inner tube in the first uniform heat spray pipe gradually decreases in the direction from the air outlet temperature control mechanism to the uniform heat plate, and the diameter of the inner tube in the second uniform heat spray pipe first decreases and then increases in the direction from the air outlet temperature control mechanism to the uniform heat plate.

[0016] Optionally, there are multiple first heat equalizing nozzles, which are divided into two groups. The two groups of first heat equalizing nozzles are relatively arranged on both sides of the flexible glass strip, and multiple first heat equalizing nozzles in each group are arranged in parallel and spaced apart; there are multiple second heat equalizing nozzles, which are divided into two groups. The two groups of second heat equalizing nozzles are relatively arranged on both sides of the flexible glass strip, and multiple second heat equalizing nozzles in each group are arranged in parallel and spaced apart.

[0017] Optionally, multiple first heat equalizing nozzles in each group are arranged in one row, multiple second heat equalizing nozzles in each group are arranged in four rows, and one row of first heat equalizing nozzles is arranged between two rows of second heat equalizing nozzles and another two rows of second heat equalizing nozzles.

[0018] Optionally, the thermal radiation forming device further comprises a mounting frame, the heat equalizing nozzle is mounted on the mounting frame, and the mounting frame is used to be arranged on a side of the flexible glass ribbon.

[0019] A flexible glass production line comprises the above-mentioned thermal radiation forming device, the thermal radiation forming device comprises an air outlet temperature control mechanism and a soaking nozzle, the soaking nozzle comprises a ventilation pipe and a soaking plate, one end of the ventilation pipe is connected to the air outlet temperature control mechanism, and the other end is connected to the soaking plate, a return air channel is arranged in the ventilation pipe, the air outlet temperature control mechanism is used to pass airflow of preset temperature, preset speed and preset flow into the ventilation pipe, so that the airflow flows out through the return air channel under the blocking effect of the soaking plate, and the soaking plate is used to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass strip.

[0020] The thermal radiation forming device and the flexible glass production line provided by the present invention have the following beneficial effects:

[0021] The heat radiation forming device provided by the present invention comprises a heat-saturating nozzle including a ventilation pipe and a heat-saturating plate, one end of the ventilation pipe is connected to an air outlet temperature control mechanism, and the other end is connected to the heat-saturating plate, a return air channel is arranged in the ventilation pipe, the air outlet temperature control mechanism is used to flow airflow of a preset temperature, preset speed and preset flow into the ventilation pipe, so that the airflow flows out through the return air channel under the blocking effect of the heat-saturating plate, and the heat-saturating plate is used to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass strip. Compared with the prior art, the heat radiation forming device provided by the present invention adopts a ventilation pipe connected between the air outlet temperature control mechanism and the heat-saturating plate and a return air channel arranged in the ventilation pipe, so that accurate thickness adjustment can be achieved during the forming process, the production steps can be simplified, the production efficiency can be improved, the production cost can be reduced, and the mass production of flexible glass can be facilitated.

[0022] The flexible glass production line provided by the present invention 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 mass production of flexible glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A schematic diagram of the structure of the thermal radiation forming device provided in an embodiment of the present invention when radiating a flexible glass ribbon;

[0025] Figure 2 A schematic diagram of the structure of a flexible glass ribbon applied to a thermal radiation forming device provided in an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure in which the first and second heat-scaling nozzles in the thermal radiation forming device provided in an embodiment of the present invention are installed on a mounting frame;

[0027] Figure 4 A schematic diagram of the structure of a first heat-saturating nozzle in a thermal radiation forming device provided in an embodiment of the present invention;

[0028] Figure 5 A cross-sectional view of a first heat-saturating nozzle in a thermal radiation forming device provided in an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the structure of a second heat-saturating nozzle in a thermal radiation forming device provided in an embodiment of the present invention;

[0030] Figure 7 A cross-sectional view of a second heat-dissipating nozzle in a thermal radiation forming device according to an embodiment of the present invention.

[0031] Icons: 100-thermal radiation forming device; 110-heat equalizing nozzle; 111-outer tube; 112-inner tube; 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 equalizing plate; 114-return air duct; 120-installation frame; 130-first heat equalizing nozzle; 140-second heat equalizing nozzle; 200-flexible glass strip; 210-first thick zone; 220-thin zone; 230-second thick zone. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0038] Please refer to Figures 1 to 7 ( Figure 5 and Figure 7 The hollow arrow in the figure indicates the airflow direction). The embodiment of the present invention provides a flexible glass production line (not shown) for producing flexible glass. It can achieve precise thickness adjustment during the molding process, simplify the production steps, improve production efficiency, reduce production costs, and facilitate mass production of flexible glass.

[0039] It should be noted that the flexible glass production line includes a discharging device (not shown) and a thermal radiation forming device 100. The discharging device is arranged above the thermal radiation forming device 100, and is used to realize the discharging and forming of the glass melt, so that the formed flexible glass ribbon 200 passes downward through the thermal radiation forming device 100, and the thermal radiation forming device 100 is used to accurately control the temperature of the flexible glass ribbon 200, so as to realize accurate thickness adjustment during the forming process. Compared with the method of first pulling down to form and then adjusting the thickness by chemical etching in the prior art, it can effectively simplify the production steps, improve production efficiency, reduce production costs, and facilitate the mass production of flexible glass.

[0040] Furthermore, in the process of the flexible glass ribbon 200 flowing downward, since it is not completely solidified, its fluidity can be changed by regulating the ambient temperature, so that it can be cooled and solidified faster or slower, thereby achieving precise thickness adjustment. Specifically, when the ambient temperature is high, the viscosity of the flexible glass ribbon 200 decreases and the fluidity increases. At this time, the flexible glass ribbon 200 will cool and solidify more slowly, and will also form a thicker thickness; when the ambient temperature is low, the viscosity of the flexible glass ribbon 200 increases and the fluidity decreases. At this time, the flexible glass ribbon 200 will cool and solidify faster, and will also form a thinner thickness. In the present invention, the thermal radiation forming device 100 accurately controls the ambient temperature of the flexible glass ribbon 200 by thermal radiation, thereby accurately adjusting the thickness distribution of the flexible glass ribbon 200, which is stable and reliable, and has high production efficiency.

[0041] The thermal radiation forming device 100 includes an outlet air temperature control mechanism (not shown) and a heat soaking nozzle 110. The heat soaking nozzle 110 includes a ventilation pipe (not shown) and a heat soaking plate 113. One end of the ventilation pipe is connected to the outlet air temperature control mechanism, and the other end is connected to the heat soaking plate 113. A return air channel 114 is provided in the ventilation pipe. The outlet air temperature control mechanism is used to pass airflow of 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 blocking effect of the heat soaking plate 113. The heat soaking plate 113 is used to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass ribbon 200. In this way, by changing the preset temperature of the airflow, the temperature field formed by the heat soaking plate 113 can be quickly adjusted, so as to accurately control the ambient temperature of the flexible glass ribbon 200, and then accurately adjust the thickness distribution of the flexible glass ribbon 200.

[0042] Furthermore, the ventilation duct includes an outer tube 111 and an inner tube 112, wherein the outer tube 111 is sleeved outside the inner tube 112, and the outer tube 111 and the inner tube 112 are spaced apart to form a return air passage 114. One end of the inner tube 112 is connected to the air outlet temperature control mechanism, and the other end is spaced apart from the heat spreader 113, and the heat spreader 113 is sealed and connected to one end of the outer tube 111. The air outlet temperature control mechanism is used to allow airflow of a preset temperature to flow into the inner tube 112, so that the airflow flows out through the return air passage 114 under the blocking effect of the heat spreader 113, and the heat spreader 113 is used to form a temperature field when the airflow passes through, so as to radiate heat to the formed flexible glass ribbon 200.

[0043] Furthermore, the heat spreader 113 is arranged in parallel and spaced apart from the flexible glass ribbon 200, so that the temperature field formed on the heat spreader 113 can evenly radiate heat to the flexible glass ribbon 200, thereby improving the radiation effect, thereby improving the temperature control accuracy and thickness adjustment accuracy. In this embodiment, the flexible glass ribbon 200 flows downward in the vertical direction, and the heat spreader 113 is arranged on a vertical plane.

[0044] Specifically, the distance between the heat spreader 113 and the flexible glass ribbon 200 is 50 mm to 180 mm. A reasonable distance between the heat spreader 113 and the flexible glass ribbon 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 ribbon 200 is too small, the heat of the heat spreader 113 will be directly transferred to the flexible glass ribbon 200 through the air. The excessively fast heat transfer will affect the curing effect of the flexible glass ribbon 200, thereby affecting the product quality; if the distance between the heat spreader 113 and the flexible glass ribbon 200 is too large, the heat spreader 113 will have a weak heat radiation effect on the flexible glass ribbon 200, and will not play a role in precise temperature control, and it will not be possible to accurately adjust the thickness distribution of the flexible glass ribbon 200.

[0045] In an optional embodiment, the heat spreader 113 is made of silicon carbide heat spreader material, which has a strong radiation capability and can form a stable temperature field under the action of airflow to radiate heat to the flexible glass ribbon 200 .

[0046] The air outlet 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 used to blow out the airflow, and the heat exchanger is used to exchange heat for the airflow so that the temperature of the airflow reaches a preset temperature, thereby realizing the function of passing the airflow of the preset temperature into the inner tube 112.

[0047] Preferably, the thermal radiation forming device 100 further includes a mounting frame 120. The heat-averaging nozzle 110 is mounted on the mounting frame 120, and the mounting frame 120 is used to be arranged on the side of the flexible glass ribbon 200. The mounting frame 120 can fix the position of the heat-averaging nozzle 110 so that the heat-averaging nozzle 110 can form a stable temperature field, thereby uniformly radiating heat to the side of the flexible glass ribbon 200.

[0048] Furthermore, there are multiple heat-averaging nozzles 110, which are divided into two groups. The two groups of heat-averaging nozzles 110 are relatively arranged on both sides of the flexible glass ribbon 200. In each group, multiple heat-averaging nozzles 110 are arranged in parallel and spaced apart. The two groups of heat-averaging nozzles 110 work together to simultaneously radiate heat to both sides of the flexible glass ribbon 200, so that the same positions on both sides of the flexible glass ribbon 200 are at the same ambient temperature, thereby ensuring the uniformity of the thickness adjustment of the flexible glass ribbon 200 and thus ensuring product quality.

[0049] It is worth noting that flexible glass is divided into equal-thickness flexible glass and unequal-thickness flexible glass. The thermal radiation forming device 100 can be used to form both equal-thickness flexible glass and unequal-thickness flexible glass. When the thermal radiation forming device 100 is used to form equal-thickness flexible glass, the preset temperature of the airflow introduced into the multiple heat-averaging nozzles 110 is the same, and the temperature field formed by the multiple heat-averaging nozzles 110 is the same, so as to apply equivalent thermal radiation to the flexible glass ribbon 200, ensure that the thickness of the flexible glass ribbon 200 is equal everywhere, thereby obtaining equal-thickness flexible glass and improving the thickness uniformity of equal-thickness flexible glass. When the thermal radiation forming device 100 is used to form unequal-thickness flexible glass, the preset temperature of the airflow introduced into the multiple heat-averaging nozzles 110 is different, and the temperature field formed by the multiple heat-averaging nozzles 110 is different, so as to apply unequal thermal radiation to the flexible glass ribbon 200, so that the thickness of the flexible glass ribbon 200 is different everywhere, thereby obtaining unequal-thickness flexible glass.

[0050] In this embodiment, the thermal radiation forming device 100 is used to form flexible glass of unequal thickness, the heat equalizing nozzle 110 includes a first heat equalizing nozzle 130 and a second heat equalizing nozzle 140 arranged at intervals, and 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, and the air outlet temperature control mechanism is used to pass the airflow of the first preset temperature into the first heat equalizing nozzle 130, and is also used to pass the airflow of the second preset temperature into the second heat equalizing nozzle 140, so that the temperature of the temperature field formed by the first heat equalizing nozzle 130 is lower than the temperature field formed by the second heat equalizing nozzle 140, so that the thickness of the part of the flexible glass ribbon 200 corresponding to the first heat equalizing nozzle 130 is smaller than the thickness of the part of the flexible glass ribbon 200 corresponding to the second heat equalizing nozzle 140. In this way, in the process of the formed flexible glass ribbon 200 passing through the thermal radiation forming device 100, two parts of the flexible glass ribbon 200 of different thicknesses will be formed, thereby obtaining flexible glass of unequal thickness.

[0051] However, it is not limited to this. In another embodiment, the heat-averaging nozzle 110 may further include a third heat-averaging nozzle, and the preset temperature may further include a third preset temperature. The second preset temperature is lower than the third preset temperature. At this time, the air outlet temperature control mechanism is used to flow the airflow of the third preset temperature into the third heat-averaging nozzle, so that the temperature of the temperature field formed by the second heat-averaging nozzle 140 is lower than the temperature field formed by the third heat-averaging nozzle, so that the thickness of the part of the flexible glass ribbon 200 corresponding to the second heat-averaging nozzle 140 is smaller than the thickness of the part of the flexible glass ribbon 200 corresponding to the third heat-averaging nozzle, and then Forming three parts of a flexible glass ribbon 200 with different thicknesses; in another embodiment, the heat-averaging nozzle 110 may further include a third heat-averaging nozzle and a fourth heat-averaging nozzle, the preset temperature may further include a third preset temperature and a fourth preset temperature, the second preset temperature is less than the third preset temperature, and the third preset temperature is less than the fourth preset temperature. At this time, the thermal radiation forming device 100 can form four parts of a flexible glass ribbon 200 with different thicknesses; there is no specific limitation on the number of airflows with different preset temperatures passed through each type of heat-averaging nozzle 110 and the number of parts with different thicknesses in the flexible glass ribbon 200.

[0052] It should be noted that, due to structural limitations, the airflow temperature output by the air outlet temperature control mechanism is within a certain temperature range, that is, the airflow output by the air outlet temperature control mechanism has a maximum temperature and a minimum temperature. In the case of a conventional straight-cylindrical heat-averaging nozzle 110, if the airflow output by the air outlet temperature control mechanism has reached the minimum temperature, and the thickness of the flexible glass ribbon 200 is still relatively thick (not meeting the production requirements for thinner), the shape of the heat-averaging nozzle 110 needs to be improved. Accordingly, in the case of a conventional straight-cylindrical heat-averaging nozzle 110, if the airflow output by the air outlet temperature control mechanism has reached the maximum temperature, and the thickness of the flexible glass ribbon 200 is still relatively thin (not meeting the production requirements for thicker), the shape of the heat-averaging nozzle 110 also needs to be improved. By adopting the heat-saturating nozzles 110 designed in various shapes in the present solution, the temperature regulation range of the heat-saturating plate 113 can be further increased on the basis of the air flow temperature range output by the original air outlet temperature control mechanism, breaking the limitations of temperature regulation caused by the original structural limitations, 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.

[0053] In an optional embodiment, the first preset temperature is relatively low (close to or equal to the minimum temperature), and the first heat-saturating nozzle 130 is tapered to quickly cool the corresponding position on the flexible glass ribbon 200 to make it solidify faster, thereby forming a thinner thickness to meet production requirements.

[0054] Specifically, in the first heat equalizing nozzle 130, the diameter of the inner tube 112 gradually decreases in the air inlet direction, and the diameter of the outer tube 111 gradually increases in the return air direction, that is, the shape of the outer tube 111 matches the shape of the inner tube 112, and the cross-sectional area of ​​the return air channel 114 is equal everywhere in the return air direction. In this way, when the air outlet temperature control mechanism discharges air, the airflow of the first preset temperature first flows in the inner tube 112 toward the direction close to the heat spreader 113. In this process, as the diameter of the inner tube 112 gradually decreases, the cross-sectional area of ​​the inner tube 112 also gradually decreases, resulting in an increase in airflow velocity and a decrease in pressure (according to the Bernoulli principle, the greater the air velocity, the smaller the pressure), so the airflow can be quickly blown to the heat spreader 113 to quickly take away the heat of the heat spreader 113, achieve rapid cooling of the flexible glass ribbon 200, accelerate its solidification speed, and form a thinner thickness; then the airflow carrying the heat of the heat spreader 113 flows out through the return air channel 114. In this process, since the cross-sectional area of ​​the return air channel 114 is equal everywhere, the return airflow flows out at a uniform speed to achieve the leakage of the airflow. In this way, the first heat spreader nozzle 130 with a tapered shape can achieve the molding of a thinner flexible glass ribbon 200 compared to the conventional straight-cylinder heat spreader nozzle 110 to meet production requirements.

[0055] In the first heat-averaging 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 disposed, and the diameter of the first straight section 1121 is greater 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 air outlet temperature control mechanism, and the second straight section 1123 is spaced apart from the heat spreader 113. The air outlet temperature control mechanism can introduce an airflow of a first preset temperature into the first straight section 1121. The airflow has an increased velocity and a reduced pressure under the action of the necking 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 flows back through the return air channel 114 under the blocking action of the heat spreader 113. In this process, the heat spreader 113 forms a relatively low temperature field under the action of the airflow of the first preset temperature, so as to quickly cool the flexible glass ribbon 200, accelerate its solidification speed, and form a thinner thickness.

[0056] In this embodiment, in the first soaking nozzle 130, the constricted section 1122 is arranged in a straight line, and the constricted section 1122 arranged in a straight line can guide the airflow stably when it passes through, so that the flow rate of the airflow is uniformly increased, turbulence is avoided, and the temperature uniformity of the soaking plate 113 is ensured. However, this is not limited to this. In other embodiments, the constricted section 1122 can also be arranged in an arc shape, which can also guide the airflow stably and ensure the temperature uniformity of the soaking plate 113. The shape of the constricted section 1122 is not specifically limited.

[0057] In an optional embodiment, the second preset temperature is higher (close to or equal to the maximum temperature), and the second heat-averaging nozzle 140 is in a shape that first gradually contracts and then gradually expands, so as to insulate or heat the corresponding position on the flexible glass ribbon 200, so that it solidifies more slowly, thereby forming a thicker thickness to meet production requirements.

[0058] Specifically, in the second heat-averaging nozzle 140, the diameter of the inner tube 112 first decreases and then increases in the air inlet direction, and the diameter of the outer tube 111 first decreases and then increases in the air return direction, that is, the shape of the outer tube 111 matches the shape of the inner tube 112, and the cross-sectional area of ​​the return air channel 114 is equal everywhere in the air return direction. In this way, when the air outlet temperature control mechanism discharges air, the airflow of the second preset temperature first flows in the inner tube 112 toward the heat-averaging plate 113. This process is divided into two stages. In the first stage, the diameter of the inner tube 112 gradually decreases, and the cross-sectional area of ​​the inner tube 112 also gradually decreases, resulting in an increase in the air flow velocity and a decrease in the pressure, thereby increasing the air intake. When the air flow blows to the throat of the inner tube 112 (the position with the smallest diameter in the inner tube 112), the air flow velocity reaches the maximum. In the second stage, the diameter of the inner tube 112 gradually increases, and the cross-sectional area of ​​the inner tube 112 gradually decreases. The cross-sectional area of ​​the heat plate 113 gradually increases, resulting in a decrease in air flow velocity and an increase in pressure, thereby extending the contact time between the air flow and the heat plate 113, ensuring that the heat of the air flow can be stably transferred to the heat plate 113, with a good heating effect, thereby achieving the insulation or heating of the flexible glass strip 200, maintaining or slowing down its solidification speed, and forming a thicker thickness; then the air flow that loses part of the heat flows out through the return air channel 114. In this process, since the cross-sectional area of ​​the return air channel 114 is equal everywhere, the return air flow flows out at a uniform speed to achieve the leakage of the air flow. In this way, the first heat-averaging nozzle 130, which is first gradually contracted and then gradually expanded, can achieve the molding of a thicker flexible glass strip 200 compared to the conventional straight-cylinder heat-averaging nozzle 110 to meet production requirements.

[0059] In the second heat-saturating nozzle 140, the inner tube 112 includes a third straight section 1124, a tapered section 1125, a gradually expanding section 1126 and a fourth straight section 1127 which are connected in sequence. The tapered section 1125 and the gradually expanding section 1126 are both arranged between the third straight section 1124 and the fourth straight section 1127. In this embodiment, the third straight section 1124, the tapered section 1125, the gradually expanding section 1126 and the fourth straight section 1127 are integrally formed to improve the connection strength. Specifically, the third straight section 1124 is coaxially arranged with the fourth straight section 1127, and the diameter of the third straight section 1124 is equal to the diameter of the fourth straight section 1127, that is, the large end of the tapered section 1125 is connected to the third straight section 1124, the small end of the tapered section 1125 is connected to the small end of the gradually expanding section 1126, and the large end of the gradually expanding section 1126 is connected to the fourth straight section 1127. The third straight section 1124 is connected to the air outlet temperature control mechanism, and the fourth straight section 1127 is spaced apart from the heat spreader 113. The air outlet temperature control mechanism can introduce an airflow of 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 tapering section 1125 to increase the air intake volume, and then decreases in velocity and increases in pressure under the action of the expanding section 1126 to prolong the contact time between the airflow and the heat spreader 113, and 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 blocking effect of the heat spreader 113. In this process, the heat spreader 113 forms a temperature field with a relatively high temperature under the action of the airflow of the second preset temperature to insulate or heat the flexible glass ribbon 200, maintain or slow down its solidification speed, and form a thicker thickness.

[0060] In this embodiment, in the second soaking nozzle 140, the tapered section 1125 and the gradually expanding section 1126 are both arranged in an arc shape to form a gourd-like shape. The tapered section 1125 and the gradually expanding section 1126 arranged in a gourd shape can stably guide the airflow when it passes through, so that the flow rate of the airflow increases first and then decreases, and effectively prolongs the contact time between the airflow and the soaking plate 113 while ensuring the air intake, improves the heating effect of the airflow on the soaking plate 113, and ensures the temperature uniformity of the soaking plate 113. However, it is not limited to this. In other embodiments, the tapered section 1125 and the gradually expanding section 1126 can also be arranged in a straight line, which can also stably guide the airflow, increase the air intake, improve the heating effect on the soaking plate 113, and ensure the temperature uniformity of the soaking plate 113. The shapes of the tapered section 1125 and the gradually expanding section 1126 are not specifically limited.

[0061] In this embodiment, the flexible glass ribbon 200 is divided into three regions along its width direction, namely, a first thick region 210, a thin region 220, and a second thick region 230, wherein the thickness of the first thick region 210 is equal to the thickness of the second thick region 230 and is greater than the thickness of the thin region 220, and the width of the first thick region 210 is equal to the width of the second thick region 230 and is greater than the width of the thin region 220. Specifically, the first heat-averaging nozzle 130 is used to shape the thin region 220, and the second heat-averaging nozzle 140 is used to shape the first thick region 210 and the second thick region 230, and the first heat-averaging nozzle 130 and the second heat-averaging nozzle 140 work together to achieve the production of flexible glass of unequal thickness.

[0062] Furthermore, there are multiple first heat equalizing nozzles 130, which are divided into two groups. The two groups of first heat equalizing nozzles 130 are relatively arranged on both sides of the flexible glass strip 200, and multiple first heat equalizing nozzles 130 in each group are arranged in parallel and spaced apart; there are multiple second heat equalizing nozzles 140, which are divided into two groups. The two groups of second heat equalizing nozzles 140 are relatively arranged on both sides of the flexible glass strip 200, and multiple second heat equalizing nozzles 140 in each group are arranged in parallel and spaced apart; the multiple first heat equalizing nozzles 130 and the multiple second heat equalizing nozzles 140 are both installed on the mounting frame 120. Specifically, multiple first heat equalizing nozzles 130 in each group are arranged in a row, and multiple second heat equalizing nozzles 140 in each group are arranged in four rows, and the row of first heat equalizing nozzles 130 is arranged between two rows of second heat equalizing nozzles 140 and another two rows of second heat equalizing nozzles 140, wherein one row of first heat equalizing nozzles 130 is used to form the thin zone 220 of the flexible glass ribbon 200, two rows of second heat equalizing nozzles 140 are used to form the first thick zone 210 of the flexible glass ribbon 200, and another second heat equalizing nozzle 140 is used to form the second thick zone 230 of the flexible glass ribbon 200.

[0063] It should be noted that there are two air outlet temperature control mechanisms, one of which is connected to multiple first equalizing heat nozzles 130 at the same time, and is used to blow out airflow at a first preset temperature, and the other air outlet temperature control mechanism is connected to multiple second equalizing heat nozzles 140 at the same time, and is used to blow out airflow at a second preset temperature.

[0064] The heat radiation forming device 100 provided in the embodiment of the present invention, the heat-saturating nozzle 110 includes a ventilation pipe and a heat-saturating plate 113, one end of the ventilation pipe is connected to the air outlet temperature control mechanism, and the other end is connected to the heat-saturating plate 113, and a return air channel 114 is arranged in the ventilation pipe, and the air outlet temperature control mechanism is used to flow airflow of preset temperature, preset speed and preset flow into the ventilation pipe, so that the airflow flows out through the return air channel 114 under the blocking effect of the heat-saturating plate 113, and the heat-saturating plate 113 is used to form a temperature field when the airflow passes through, so as to heat radiate the formed flexible glass ribbon 200. Compared with the prior art, the heat radiation forming device 100 provided by the present invention adopts the ventilation pipe connected between the air outlet temperature control mechanism and the heat-saturating plate 113 and the return air channel 114 arranged in the ventilation pipe, so that the thickness can be adjusted accurately during the forming process, the production steps are simplified, the production efficiency is improved, the production cost is reduced, and the mass production of flexible glass is facilitated. The flexible glass production line has high production efficiency and high economic benefits.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal radiation forming device, characterized in that: It includes an air outlet temperature control mechanism and a heat-saturating nozzle, the heat-saturating nozzle includes a ventilation pipe and a heat-saturating 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-saturating plate, a return air channel is arranged in the ventilation pipe, the air outlet temperature control mechanism is used to flow air with a preset temperature, a preset speed and a preset flow rate into the ventilation pipe, so that the air flow flows out through the return air channel under the blocking effect of the heat-saturating plate, and the heat-saturating plate is used to form a temperature field when the air flow passes through, so as to radiate heat to the formed flexible glass strip.

2. The thermal radiation forming device according to claim 1, characterized in that: The heat spreader and the flexible glass ribbon are arranged in parallel and spaced apart, and the distance between the heat spreader and the flexible glass ribbon is 50 mm to 180 mm.

3. The thermal radiation forming device according to claim 1, characterized in that: The ventilation duct includes an outer tube and an inner tube, the outer tube is sleeved outside the inner tube, the outer tube and the inner tube are spaced apart from each other to form the return air channel, one end of the inner tube is connected to the air outlet temperature control mechanism, and the other end is spaced apart from the heat spreader, the heat spreader is sealingly connected to one end of the outer tube, and the air outlet temperature control mechanism is used to direct airflow of a preset temperature into the inner tube so that the airflow can flow out through the return air channel under the blocking effect of the heat spreader.

4. The thermal radiation forming device 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 return air channel is equal everywhere in the air return direction.

5. The thermal radiation forming device according to claim 4, characterized in that: The inner tube includes a first straight section, a necked 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, and the necked section is arranged in an arc shape or a straight line shape.

6. The thermal radiation forming device according to claim 3, characterized in that: The diameter of the inner tube first decreases and then increases in the air inlet direction, the diameter of the outer tube first decreases and then increases in the air return direction, and the cross-sectional area of ​​the return air channel is equal everywhere in the air return direction.

7. The thermal radiation forming device according to claim 6, characterized in that: The inner tube includes a third straight section, a tapered section, a gradually expanding section and a fourth straight section connected in sequence, the third straight section is coaxially arranged with the fourth straight section, 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, and the tapered section and the gradually expanding section are both arranged in an arc shape or a straight line shape.

8. The thermal radiation forming device according to claim 3, characterized in that: The equalizing heat nozzle includes a first equalizing heat nozzle and a second equalizing heat nozzle arranged at an interval, the preset temperature includes a first preset temperature and a second preset temperature, the first preset temperature is lower than the second preset temperature, and the air outlet temperature control mechanism is used to direct the airflow of the first preset temperature into the first equalizing heat nozzle, and is also used to direct the airflow of the second preset temperature into the second equalizing heat nozzle.

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

10. The thermal radiation forming device according to claim 8, characterized in that: There are a plurality of the first heat-averaging nozzles, and the plurality of the first heat-averaging nozzles are divided into two groups. The two groups of the first heat-averaging nozzles are arranged on both sides of the flexible glass ribbon opposite to each other, and the plurality of the first heat-averaging nozzles in each group are arranged in parallel and spaced apart. There are multiple second heat-averaging nozzles, which are divided into two groups. The two groups of second heat-averaging nozzles are relatively arranged on both sides of the flexible glass ribbon, and multiple second heat-averaging nozzles in each group are arranged in parallel and spaced apart.

11. The thermal radiation forming device according to claim 10, characterized in that: Multiple first heat equalizing nozzles in each group are arranged in one row, multiple second heat equalizing nozzles in each group are arranged in four rows, and one row of the first heat equalizing nozzles is arranged between two rows of the second heat equalizing nozzles and another two rows of the second heat equalizing nozzles.

12. The thermal radiation forming device according to claim 1, characterized in that: The thermal radiation forming device further comprises a mounting frame, the heat equalizing nozzle is mounted on the mounting frame, and the mounting frame is used to be arranged on the side of the flexible glass ribbon.

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

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