A forming device for large-volume substrate glass and a temperature control method thereof
By designing segmented temperature control and strict temperature rise curve guidance in large-extraction substrate glass molding equipment, the problem of inaccurate temperature control during the equipment heating process is solved, forming efficiency and product quality are improved, and the stability and safety of the equipment are ensured.
Patent Information
- Application Number
- CN202411728959.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-04-08
AI Technical Summary
During the heating process of the molding equipment with large-extraction substrate glass, it is difficult for the internal temperature to reach the target temperature step by step, resulting in insufficient accuracy of temperature increase control, which affects the yield rate and safety factor of subsequent production.
A forming equipment is designed, including a muffle furnace, a shaping furnace and annealing furnace, which are respectively equipped with a first temperature control, a second temperature control and a third temperature control. Through segmented temperature control and strict temperature rise curve guidance, the equipment is at a preset temperature before and during the forming process.
Through precise temperature control and adjustment, the efficiency and product quality of glass molding are improved, the stability and safety factor of molding equipment are improved, and the yield of subsequent processing can reach more than 95%.
Smart Images
Figure CN119774856A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of substrate glass manufacturing and molding, and in particular relates to a molding device for substrate glass with a large lead-out amount and a temperature rising control method thereof. Background Art
[0002] At present, with the continuous development of market demand, the manufacturing technology of liquid crystal substrate glass has gradually matured. At present, the yield rate and production cost of substrate glass manufacturing will become the focus of everyone's attention. Large-output substrate glass production equipment will become the direction leading substrate glass manufacturing. However, the larger the output of large-output substrate glass production equipment, the more equipment optimization design needs to be increased. In this way, it is more difficult to control the heating process of the molding equipment in the large-output substrate glass production equipment. The most important task after the construction and installation of the hot end production line of large-output substrate glass is the heating process of the molding equipment. Then the method of the heating process is particularly critical. If the heating process of the molding equipment is not accurately controlled, it may cause the molding equipment of large-output substrate glass to always have temperature control imbalance during the heating process. If it is not handled in time, it will at least lay hidden dangers for the later molding equipment. At worst, the molding equipment may be severely deformed or the refractory material may burst, resulting in the inability to produce, or even cause major equipment accidents. In summary, during the heating process of the current large-output substrate glass molding equipment, the internal temperature of the molding equipment cannot reach the target temperature gradually, and the temperature control accuracy is insufficient, which may affect the yield and safety factor of the subsequent large-output substrate glass production. Summary of the invention
[0003] The present invention provides a molding device for large-output substrate glass and a temperature control method thereof, aiming to solve the problem that during the heating process of the current molding device for large-output substrate glass, the internal temperature of the molding device cannot gradually reach the target temperature, the temperature control accuracy is insufficient, and the yield and safety factor of the subsequent production of large-output substrate glass may be affected.
[0004] In order to achieve the above object, the present invention adopts the following technical scheme: The present invention provides a forming device for a large amount of substrate glass, comprising a device body, the device body can be used for glass forming, the device body comprises a muffle furnace, a shaping furnace and an annealing furnace from top to bottom, wherein: The muffle furnace includes a silicon carbide soaking box, the interior of the silicon carbide soaking box is provided with overflow bricks, the overflow bricks form a glass liquid channel, the upper end of the glass liquid channel can be connected to the feed pipe; the shaping furnace includes a shaping cavity, the shaping cavity is provided with a thickness adjustment part and a shaping process cooling pipe; the annealing furnace includes a stress zone, the stress zone is provided with a guide auxiliary mechanism; The muffle furnace, shaping furnace and annealing furnace are respectively equipped with a first temperature control unit, a second temperature control unit and a third temperature control unit, which are used to control and adjust the temperature of the equipment body so that the equipment body is at a preset temperature before the introduction of glass liquid and during the forming process.
[0005] In some embodiments, the first temperature control unit includes a silicon carbide heating rod, which is disposed in a silicon carbide heat soaking box and arranged around the overflow brick. The silicon carbide heating rod is used to control and adjust the temperature of the overflow brick and the glass liquid channel formed by it.
[0006] In some embodiments, the second temperature control unit includes an auxiliary heating rod and a large heater arranged from top to bottom, and the auxiliary heating rod and the large heater are used to adjust the temperature of the shaping furnace before and during glass forming; In some embodiments, the auxiliary heating rod and the shaping process cooling tube are arranged at the lower end of the glass liquid channel, so that during glass forming, the shaping process cooling tube cooperates with the auxiliary heating rod to control the temperature of the glass liquid flowing out of the lower end of the glass liquid channel.
[0007] In some embodiments, the third temperature control unit includes a small or medium-sized heater, and the small or medium-sized heater is used to control and adjust the temperature of the annealing furnace before and during glass forming.
[0008] In some embodiments, the thickness adjustment portion is used to control and adjust the thickness of the glass substrate, and the thickness adjustment portion includes a thickness adjustment structure and a locking nut configured on the thickness adjustment structure.
[0009] In some embodiments, the guiding auxiliary mechanism includes a pulling roller and a short roller mechanism, which can cooperate with the shaping furnace to guide the moving direction of the substrate glass and adjust the speed of the substrate glass, while completing the stress relief treatment of the substrate glass.
[0010] The present invention also provides a temperature control method for a forming device for a glass substrate with a large lead-out amount. The temperature control method is based on the above-mentioned forming device for a glass substrate with a large lead-out amount. The temperature control method comprises the following steps: After the equipment body is installed, the components of the equipment body are debugged and inspected to ensure that the equipment body is in good condition; Start the first temperature control unit, the second temperature control unit and the third temperature control unit according to the preset conditions, so that the muffle furnace, the shaping furnace and the annealing furnace are in the preset temperature range and are kept warm for the preset time; Among them, the temperature of the muffle furnace, the shaping furnace and the annealing furnace is monitored and recorded at preset time intervals, and the corresponding components are adjusted according to the temperature and time; Complete the heating of the forming equipment for the glass substrate with large lead-out amount before the glass is formed.
[0011] Furthermore, the temperature of the muffle furnace is controlled to rise to 1235°C-1285°C by controlling and adjusting the first temperature control unit.
[0012] Furthermore, the second temperature control unit is controlled to adjust the temperature of the shaping furnace to rise to 920°C-1120°C.
[0013] Furthermore, the temperature of the annealing furnace is controlled to rise to 450°C-920°C by controlling and adjusting the third temperature control unit.
[0014] Compared with the prior art, the present invention provides a forming device for a large amount of substrate glass and a temperature control method thereof, which has the following beneficial effects: The present invention discloses a molding device for glass substrates with a large amount of lead-out, comprising a device body, the device body can be used for glass molding, the device body includes a muffle furnace, a shaping furnace and an annealing furnace from top to bottom, wherein: the muffle furnace includes a silicon carbide soaking box, the interior of the silicon carbide soaking box has an overflow brick, the overflow brick forms a glass liquid channel, and the upper end of the glass liquid channel can be connected to a feed pipe; the shaping furnace includes a shaping cavity, the shaping cavity is provided with a thickness adjustment part and a shaping process cooling pipe; the annealing furnace includes a stress zone, the stress zone is provided with a guide auxiliary mechanism; the muffle furnace, the shaping furnace and the annealing furnace are respectively provided with a first temperature control unit, a second temperature control unit and a third temperature control unit, the first temperature control unit, the second temperature control unit and the third temperature control unit are used to control and adjust the temperature of the device body, so that the device body is at a preset temperature before the introduction of the glass liquid and during the molding process. Based on the above, the present invention performs segmented temperature control on the molding device, thereby ensuring the temperature requirements of the molding device at different molding stages before and during the processing of the substrate glass, improving the glass molding efficiency and product quality, and improving the stability and safety factor of the molding device. On the other hand, the present invention strictly performs temperature control operations according to the guidance standards of the temperature rise curve during the temperature rise period, so that the temperature rise rate and the insulation time are consistent with the temperature rise curve, and further makes the internal temperature of the molding equipment gradually reach the target temperature, which provides a technical basis for the stable production of large-output substrate glass manufacturing production lines and has better practical significance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0016] Figure 1 It is a schematic diagram of the overall structure of a molding device used for a molding device for a large-lead-out substrate glass and a temperature rise control method thereof according to the present invention; Figure 2 The present invention is a side view schematic diagram of a molding device for a large lead-out amount of substrate glass and a molding device in a temperature rise control method thereof.
[0017] Among them, 1. Muffle furnace, 2. Shaping furnace, 3. Annealing furnace, 4. Overflow bricks, 5. Silicon carbide soaking box, 6. Silicon carbide heating rod, 7. Thickness adjustment structure, 8. Locking nut, 9. Auxiliary heating rod, 10. Large heater, 11. Small and medium-sized heaters, 12. Annealing furnace opening and closing mechanism, 13. Stress zone, 14. Pulling roller, 15. Short roller mechanism, 16. Shaping process cooling pipe, 17. Tightening mechanism. DETAILED DESCRIPTION
[0018] 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.
[0019] 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.
[0020] 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.
[0021] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it 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 a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0022] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0023] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", 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 connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] How to improve the temperature stability and effectiveness of the forming equipment for large-volume substrate glass to ensure the yield rate of subsequent glass products and improve the safety factor.
[0025] like Figure 1 As shown, the present invention is a molding device for a large amount of substrate glass, including a device body, the device body can be used for glass molding, the device body includes a muffle furnace 1, a shaping furnace 2 and an annealing furnace 3 from top to bottom, wherein: The muffle furnace 1 includes a silicon carbide soaking box 5, the interior of the silicon carbide soaking box 5 is provided with an overflow brick 4, the overflow brick 4 forms a glass liquid channel, the upper end of the glass liquid channel can be connected to a feed pipe; the shaping furnace 2 includes a shaping cavity, the shaping cavity is provided with a thickness adjustment part and a shaping process cooling pipe 16; the annealing furnace 3 includes a stress zone 13, the stress zone 13 is provided with a guide auxiliary mechanism; The muffle furnace 1, the shaping furnace 2 and the annealing furnace 3 are respectively provided with a first temperature control unit, a second temperature control unit and a third temperature control unit, which are used to control and adjust the temperature of the equipment body so that the equipment body is at a preset temperature before the introduction of the glass liquid and during the forming process: Based on the above-mentioned molding equipment, the present invention provides a temperature control method for molding equipment for a large amount of substrate glass. The temperature control method is used to control the temperature of the equipment body before glass molding, and includes the following steps: After the equipment body is installed, the components of the equipment body are debugged and inspected to ensure that the equipment body is in good condition; Start the first temperature control unit, the second temperature control unit and the third temperature control unit according to the preset conditions, so that the muffle furnace 1, the shaping furnace 2 and the annealing furnace 3 are in the preset temperature range and are kept warm for the preset time; The temperatures of the muffle furnace 1, the shaping furnace 2 and the annealing furnace 3 are monitored and recorded at preset time intervals, and the corresponding components are adjusted according to the temperature and time; Complete the heating of the forming equipment for the glass substrate with large lead-out amount before the glass is formed.
[0026] The temperature rise control method of the molding equipment of the present invention is used to ensure the safety of the equipment during the temperature rise process and the temperature guarantee of each stage of the equipment temperature rise through the preparatory work before the temperature rise and the standard of the temperature rise curve, so that the glass liquid from the channel feeding pipe can smoothly pass through the overflow brick to form a substrate glass product within a certain specification range; The preparation work before heating includes dimensional inspection, sealing inspection, insulation inspection, cooling water and cooling air flow control opening after the equipment is installed, power-on commissioning of each heater, personnel arrangement during heating period, that is, a dedicated person is responsible for the specific inspection work before heating, and finally completes the inspection of various equipment before the molding equipment is heated.
[0027] The temperature control method of the molding equipment of the present invention presets the temperature and other parameters in strict accordance with the instruction manual of the temperature rise curve, and then operates according to the preset values, so that the temperature rise rate and the insulation time are consistent with the temperature rise curve, thereby further achieving the purpose of gradually increasing the internal temperature of the molding equipment.
[0028] In some embodiments, in the molding equipment of the present invention, the muffle furnace 1 is used to install insulation bricks, silicon carbide heat equalizing box 5, and overflow bricks 2 of the substrate glass molding body. The overflow bricks 2 form a glass liquid channel, and the glass liquid channel can be connected to the channel feeding pipe. During the temperature rise control, the temperature of the muffle furnace 1 is controlled to rise to 1235℃-1285℃.
[0029] In some embodiments, in the molding device of the present invention, the shaping furnace 2 is equipped with an auxiliary heating rod 9 and a large heater 10, a thickness adjustment structure 7, and a shaping process cooling pipe 16. The shaping furnace 2 is mainly used for substrate glass molding thickness homogenization. In the temperature control, the temperature of the shaping furnace 2 is controlled to reach a temperature above the softening point of the substrate glass, that is, 920°C-1120°C.
[0030] In some embodiments, in the molding equipment of the present invention, the annealing furnace 3 has an annealing zone, a stress zone 13, a furnace door adjustment opening and closing mechanism 12, a pair of long traction rollers 14, and 10-12 pairs of short roller mechanisms 15, which are used to cooperate with the shaping furnace 3 to adjust the plate speed and complete the stress relief treatment of the substrate glass. In the temperature control, since the temperature span area of the shaping furnace 3 after heating is large, the temperature of the shaping furnace 3 is controlled to be 450℃-920℃.
[0031] In the temperature control method for a forming device of a glass substrate with a large lead-out amount of the present invention, different types of heating elements are installed inside the forming device, which are used for heating areas of different sections in the muffle furnace 1, the shaping furnace 2 and the annealing furnace 3. The muffle furnace 1 is mainly heated by a silicon carbide heating rod 6, the auxiliary heating rod 9 and the large heater 10 in the shaping furnace 2 can be, but are not limited to, large iron-chromium-aluminum wire heaters and super heaters, and the small heater 11 in the annealing furnace 3 can be, but are not limited to, neutral and small iron-chromium-aluminum wire heaters.
[0032] In some embodiments, in the temperature control method of the molding equipment, the power of the auxiliary heating rod 9 is controlled to be about 25000W-30000W. After the temperature in this area reaches the requirement, the power replacement is completed and then the auxiliary heating rod 9 is removed.
[0033] In actual working conditions, in the temperature control method of the molding equipment, before the muffle furnace 2 is heated to 150°C, an exhaust port is designed and made at its position using insulation bricks and insulation cotton to remove moisture from the molding equipment and ensure that the molding equipment is dry.
[0034] Furthermore, in the temperature control method of the molding equipment, after the temperature of the molding equipment reaches 400 degrees Celsius, the expansion data of the overflow bricks and the steel structure are measured three times a day at intervals of 8 hours.
[0035] Furthermore, after the shaping furnace 2 reaches 600 degrees Celsius, the large and small boards are moved twice a day, that is, once every 12 hours, and records are kept.
[0036] Furthermore, the annealing furnace 3 in the forming equipment has zones 1, 2 and 3. After the temperature reaches 400°C, the waist plate fixing screws at both ends of the annealing furnace 3 are moved three times a day to prevent jamming and avoid hidden dangers of installing the traction roller 14 later.
[0037] The present invention provides a temperature control method for a molding device for a large amount of substrate glass. Through a detailed temperature control method, the molding device is ensured to reach a preset temperature range before the glass molding process, thereby providing a basis for the subsequent molding process, and improving the efficiency and quality of the subsequent glass molding. The present invention optimizes the glass molding process through precise temperature control and adjustment, and helps to timely discover and solve temperature fluctuation problems through regular monitoring and recording, thereby improving the stability and reliability of the molding device.
[0038] The forming device for substrate glass with a large lead-out amount and the temperature rising control method thereof of the present invention are further described in detail below through specific embodiments.
[0039] Before heating the molding equipment, first confirm the preset parameters of the molding equipment: confirm the equipment level, confirm the equipment lifting control function panel, and mark the 0 position and the upper and lower limits; the cold docking center test of the L tube and the feed tube in the muffle furnace 1 is completed, and the center position is marked, and pay attention to calculate the expansion size of the steel structure; use refractory materials to seal the L tube mouth, but leave exhaust holes of about 20mm height around; the initial pressure of the overflow brick tightening mechanism 17 is 0.5T, and the top rod nut reserves 3mm expansion gap; the silicon carbide heating rod 6 is installed and sealed with 1600 loose cotton at both ends; confirm that the insertion depth of the equipment temperature measuring thermocouple meets the design requirements; confirm again that there is no foreign matter inside and outside the overflow brick; the size of the shaping furnace is flexible and recorded The initial position is flush with the equalizing box of the shaping furnace; the locking nut 8 of the thickness adjustment mechanism 7 of the shaping furnace reserves an expansion gap of about 5mm; the long traction roller 14 is in normal operation; the opening and closing mechanism of the annealing furnace is closed and sealed with refractory materials; the auxiliary heating rod 9 is installed; check to ensure that the equipment body, terminal cabinet, transformer, power regulator cabinet, and bolt connections are not loose; set to open all water, gas, front, and air-conditioning valves of the on-site equipment and record the opening; make fixed temperature measurement marks on the muffle furnace 1, shaping furnace 2, and annealing furnace 3 respectively; the heating heater of the molding equipment limits the voltage and current power to 5-10% of the full load, and tests one circuit once a day; arrange operation and maintenance personnel to monitor and maintain the equipment.
[0040] After the above preparatory work before heating is completed, heating begins. It is required that the muffle furnace 1 and the shaping furnace 2 be heated synchronously. On the first day, the temperature of the muffle furnace is raised from 24°C to 96°C at 3°C / H, and the annealing furnace is raised from 24°C to 72°C at 3°C / H. The temperature of each temperature control point of the equipment and the operating status of the long traction roller of the moving parts are recorded every hour. At the same time, the status of the equipment cooling air, water, and air are checked; on the second day, the muffle furnace is raised to 120°C at 3°C / H, and the annealing furnace is raised to 96°C at 2°C / H. The equipment starts to keep warm for 36 hours, and the equipment inspection form during the heating period is filled in; as the temperature rises every day, the tightening pressure of the overflow brick tightening mechanism and the reserved expansion gap of the nut are adjusted; on the third day, the temperature of the muffle furnace is raised to 132°C at 3°C / H, The annealing furnace is heated to 104℃ at 2℃ / H. Fill in the equipment inspection form during the heating period. The equipment process technicians check and confirm, and lead the team for inspection from time to time. If any abnormality is found, it will be handled in time, reported and recorded afterwards; on the fourth day, the muffle furnace is heated to 204℃ at 3℃ / H, and the annealing furnace is heated to 152℃ at 2℃ / H. During this period, when the muffle furnace is heated to 150℃, the equipment is dried, and the L tube position is sealed with insulation bricks and insulation cotton. The temperature in the muffle furnace 1 will cause slight fluctuations. After observing for 1-2H, adjust the heater power; on the fifth day, the muffle furnace is heated to 276℃ at 3℃ / H, and the annealing furnace is heated to 200℃ at 2℃ / H. Pay attention to burns during inspection when the equipment temperature gradually increases. Be sure to take good protection and pay attention to inspection Check the changes in the reserved expansion gap. The temperature of the overflow bricks in the muffle furnace is gradually increased. Pay attention to ensure that the temperature difference between the tip of the brick and the top of the brick is plus or minus 25°C; on the sixth day, the temperature is raised to 348°C at 3°C / H for the muffle furnace, and to 248°C at 2°C / H for the annealing furnace; on the seventh day, the temperature is raised to 420°C at 3°C / H for the muffle furnace, and to 296°C at 2°C / H for the annealing furnace. According to the requirements of the heating instruction manual of the molding equipment, after 400 degrees Celsius, measure the expansion data of the overflow bricks and steel structures three times a day at intervals of 8 hours; on the eighth day, the temperature is raised to 492°C at 3°C / H for the muffle furnace, and to 344°C at 2°C / H for the annealing furnace; on the ninth day, the temperature is raised to 564°C at 3°C / H for the muffle furnace, and to 392°C at 2°C / H for the annealing furnace; on the tenth day, the temperature is raised to 420°C at 3°C / H for the muffle furnace, and to 296°C at 2°C / H for the annealing furnace. The furnace was raised to 636℃ at 3℃ / H, the annealing furnace was raised to 440℃ at 2℃ / H, and the large and small composite plates above 600℃ in the shaping furnace were moved every 12 hours to prevent high-temperature deformation and jamming. The annealing furnace was moved three times a day to fix the waist plate fixing screws on both ends of the annealing furnace to prevent jamming and cause hidden dangers of installing traction rollers later. The temperature of the lower area of the annealing furnace was controlled at 400℃ plus or minus 1℃; on the eleventh day, the muffle furnace was raised to 708℃ at 3℃ / H, and the annealing furnace was raised to 488℃ at 2℃ / H. The equipment gradually entered the high-temperature area for enhanced inspection, paying attention to the temperature difference between the brick tip and the top of the brick to ensure equipment safety; on the twelfth day, the muffle furnace was raised to 780℃ at 3℃ / H, and the annealing furnace was raised to 536℃ at 2℃ / H;On the thirteenth day, the temperature of the muffle furnace was raised to 800℃ at 3℃ / H, the muffle furnace began to be kept warm for 16H, and the annealing furnace continued to be raised to 584℃ at 2℃ / H. The lower annealing furnace area reached the target temperature from bottom to top and began to be kept warm. Pay attention to controlling the temperature difference; on the fourteenth day, the temperature of the muffle furnace was raised to 872℃ at 3℃ / H, and the annealing furnace was raised to 632℃ at 2℃ / H; on the fifteenth day, the temperature of the muffle furnace was raised to 944℃ at 3℃ / H, and the annealing furnace was raised to 680℃ at 2℃ / H. The temperature of the lower part of the molding was controlled at around 920℃ plus or minus 1℃; on the sixteenth day, the temperature of the muffle furnace was raised to 1016℃ at 3℃ / H, and the annealing furnace was raised to 728℃ at 2℃ / H; on the seventeenth day, the temperature of the muffle furnace was raised to 1088℃ at 3℃ / H, and the annealing furnace was raised to 776℃ at 2℃ / H; on the eighteenth day, the temperature of the muffle furnace was raised to 1160℃ at 3℃ / H, and the annealing furnace was raised to 2 ℃ / H to 824℃; on the 19th day, the muffle furnace was raised to 1232℃ at 3℃ / H, the annealing furnace was raised to 882℃ at 2℃ / H, and the upper part of the shaping furnace began to be kept warm at 1120℃; on the 20th day, the muffle furnace was raised to 1260℃ at 3℃ / H, the annealing furnace was raised to 900℃ at 2℃ / H, and the entire molding equipment of muffle furnace 1, shaping furnace 2, and annealing furnace 3 began to be kept warm for 48H; on the 22nd day, the auxiliary heating rod 9 of the shaping furnace began to be replaced with the silicon carbide heating rod 6 and the large iron-chromium-aluminum wire heater 10. It is required to replace gradually to reduce the excessive temperature fluctuation inside the equipment and cause irreversible damage to the equipment. The replacement process takes 48H. After the replacement is completed, it continues to be kept warm for 12H to complete the heating work of the molding equipment. The docking time of the L tube in the muffle furnace 1 and the feed tube will be determined according to the heating situation of the glass channel. ;
[0041] In summary, the present invention provides a molding device for substrate glass with a large lead-out amount and a temperature control method thereof, which ensures that the substrate glass molding device reaches an ideal temperature range before glass molding through detailed steps and precise temperature settings, thereby improving molding efficiency and product quality. After the molding device for substrate glass with a large lead-out amount adopts the temperature control method of the present invention, the yield of subsequent processing can be greater than 95%. The method detects and solves temperature fluctuation problems in a timely manner through regular monitoring and recording, effectively avoids molding defects caused by unstable temperature, and improves the stability of the equipment. The method provides a flexible temperature adjustment method, which can be personalized according to different production requirements and material properties, enhancing the flexibility of the equipment, so that the internal temperature of the molding device can gradually reach the target temperature, and is expected to improve the stability and efficiency of the substrate glass molding device.
[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the specification and described above, and any equivalent changes, modifications and evolutions made by using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.
Claims
1. A forming device for a large amount of substrate glass, characterized in that: The invention comprises an equipment body, the equipment body can be used for glass forming, the equipment body comprises, from top to bottom, a muffle furnace (1), a shaping furnace (2) and an annealing furnace (3), wherein: The muffle furnace (1) comprises a silicon carbide soaking box (5), the silicon carbide soaking box (5) has an overflow brick (4) inside, the overflow brick (4) forms a glass liquid channel, and the upper end of the glass liquid channel can be connected to a feed pipe; the shaping furnace (2) comprises a shaping cavity, the shaping cavity is provided with a thickness adjustment part and a shaping process cooling pipe (16); the annealing furnace (3) comprises a stress zone (13), and the stress zone (13) is provided with a guide auxiliary mechanism; The muffle furnace (1), the shaping furnace (2) and the annealing furnace (3) are respectively provided with a first temperature control unit, a second temperature control unit and a third temperature control unit, wherein the first temperature control unit, the second temperature control unit and the third temperature control unit are used to control and adjust the temperature of the equipment body so that the equipment body is at a preset temperature before the introduction of the glass liquid and during the forming process.
2. The forming equipment for large-volume substrate glass according to claim 1, characterized in that: The first temperature control unit comprises a silicon carbide heating rod (6), which is arranged in a silicon carbide heat-saturating box (5) and arranged on the periphery of the overflow brick (4), and is used to control and adjust the temperature of the overflow brick (4) and the glass liquid channel formed by the overflow brick (4).
3. The forming equipment for large-volume substrate glass according to claim 1, characterized in that: The second temperature control unit comprises an auxiliary heating rod (9) and a large heater (10) arranged from top to bottom, wherein the auxiliary heating rod (9) and the large heater (10) are used to adjust the temperature of the shaping furnace (2) before and during glass forming; The auxiliary heating rod (9) and the shaping process cooling tube (16) are arranged at the lower end of the glass liquid channel, so that during glass forming, the shaping process cooling tube (16) cooperates with the auxiliary heating rod (9) to control the temperature of the glass liquid flowing out of the lower end of the glass liquid channel.
4. The forming equipment for large-volume substrate glass according to claim 1, characterized in that: The third temperature control unit comprises a small or medium sized heater (11), and the small or medium sized heater (11) is used to control and adjust the temperature of the annealing furnace (3) before and during glass forming.
5. The forming equipment for large-volume substrate glass according to claim 1, characterized in that: The thickness adjustment part is used to control and adjust the thickness of the glass substrate, and comprises a thickness adjustment structure (7) and a locking nut (8) arranged on the thickness adjustment structure (7).
6. The forming equipment for a large amount of substrate glass according to claim 1, characterized in that: The guiding auxiliary mechanism comprises a traction roller (14) and a short roller mechanism (15), and the traction roller (14) and the short roller mechanism (15) can cooperate with the shaping furnace (2) to guide the moving direction of the substrate glass and adjust the speed of the substrate glass, while completing the stress relief treatment of the substrate glass.
7. A temperature control method for a forming device for a large amount of substrate glass, characterized in that: The temperature control method is based on any one of claims 1 to 6 for a forming device for a glass substrate with a large lead-out amount, and the temperature control method is used to control the temperature of the device body before glass forming, and comprises the following steps: After the equipment body is installed, the components of the equipment body are debugged and inspected to ensure that the equipment body is in good condition; Starting the first temperature control unit, the second temperature control unit and the third temperature control unit according to preset conditions, so that the muffle furnace (1), the shaping furnace (2) and the annealing furnace (3) are within a preset temperature range and are kept warm for a preset time; The temperatures of the muffle furnace (1), the shaping furnace (2) and the annealing furnace (3) are monitored and recorded at preset time intervals, and corresponding components are adjusted according to the temperature and time; Complete the heating of the forming equipment for the glass substrate with large lead-out amount before the glass is formed.
8. The temperature rising control method for a forming device for a glass substrate having a large lead-out amount according to claim 7, characterized in that: By controlling the first temperature control unit, the temperature of the muffle furnace (1) is controlled to rise to 1235°C-1285°C.
9. The temperature rising control method for forming equipment for a large amount of substrate glass according to claim 7, characterized in that: The second temperature control unit is controlled and adjusted to increase the temperature of the shaping furnace (2) to 920° C.-1120° C.
10. The temperature rising control method for forming equipment for a large amount of substrate glass according to claim 7, characterized in that: The third temperature control unit is controlled and adjusted to increase the temperature of the annealing furnace (3) to 450°C-920°C.