Device for precisely controlling non-flow thickness of flexible glass
By setting independent non-flow thickness precision control elements on both sides of the mold outlet and accurately adjusting the glass liquid temperature field, the problem of non-flow thickness control of flexible glass is solved, high-precision and consistent production is achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202422597696.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-10-25
AI Technical Summary
Traditional flexible glass production processes make it difficult to achieve high-precision and consistent control of non-flow thickness, resulting in uneven product quality and limiting its promotion in high-end application fields.
Multiple independent non-flow thickness precision control elements are set on both sides of the mold outlet. By accurately adjusting the temperature field on both sides of the glass liquid, the internal exhaust heating ceramic tube and the thermocouple work together to achieve fine control of the glass liquid solidification process.
It achieves high-precision and consistent control of the non-flow thickness of flexible glass, improves product quality and performance, extends mold service life, reduces production failure rate and maintenance costs, and improves production line efficiency.
Smart Images
Figure CN223329196U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of flexible glass production, and specifically relates to a device for precisely controlling the non-flow thickness of flexible glass. Background Art
[0002] With the rapid development of modern technology, flexible glass, due to its unique flexibility and excellent optical properties, has shown broad application prospects in electronic devices, display screens and other fields. However, in the production process of flexible glass, achieving precise control of its non-flow thickness has always been a key and challenging technical problem.
[0003] Traditional glass production processes have numerous shortcomings when it comes to controlling glass thickness. Previous methods often struggle to achieve high-precision and consistent control of the non-flow thickness of flexible glass, resulting in significant thickness deviations and non-uniformity in the resulting flexible glass products. This not only impacts product quality and performance, but also limits its adoption and adoption in high-end applications.
[0004] For example: authorization announcement number CN215906088U The device for preparing flexible ultra-thin glass by the overflow down-draw method is described. When the flexible glass is produced by the down-draw method, the glass liquid flowing out of the bottom of the mold flows down in a ribbon shape. In order to maximize the proportion of the effective thickness area in the non-flow direction (width direction) of the glass ribbon, the dimensional design and processing accuracy of the forming mold need to be quite high, so as to ensure the width of the quality area in the middle of the glass ribbon in the non-flow direction. When the high-temperature dimensional accuracy of the forming mold reaches the limit of use, normal production can only be interrupted to replace the forming mold, and this action is quite frequent. In order to extend the service life of the forming mold, maximize the utilization rate of the equipment and improve production efficiency, it is necessary to use a more advanced (high-temperature creep resistance) forming mold material to achieve this. Although this method partially extends the normal use cycle of the forming mold, it is achieved at a higher manufacturing cost.
[0005] To this end, we have proposed a device for precise control of the non-flow thickness of flexible glass. This device can not only widen the width of some quality zones in the non-flow direction and produce some oversized products in the non-flow direction, but also produce products with higher precision specifications, thereby greatly improving the overall efficiency of the production line. Utility Model Content
[0006] The purpose of this application is to provide a device for precise control of the non-flow thickness of flexible glass. This device can not only widen the width of some quality zones in the non-flow direction and produce some oversized products in the non-flow direction, but also produce products with higher precision specifications, thereby greatly improving the overall efficiency of the production line.
[0007] The technical solutions adopted in this application are as follows:
[0008] A device for precisely controlling the non-flow thickness of flexible glass comprises a mold, and a plurality of independent non-flow thickness precision control elements are provided on both sides of the mold outlet;
[0009] Each independent non-flow thickness precision control element includes an air inlet connector, an air inlet is provided on the top of the air inlet connector, a heating section is inserted into one side of the air inlet connector, and a thermocouple is inserted into the other side of the air inlet connector;
[0010] The heating section includes an outer insulating ceramic tube arranged on one side of the air intake joint, an outer insulating ceramic tube and an inner exhaust heating ceramic tube arranged inside the outer insulating ceramic tube, an exhaust end head is provided at one end of the inner exhaust heating ceramic tube, and the other end of the inner exhaust heating ceramic tube is inserted into the air intake joint, and high-temperature seals at the ends of the inner and outer ceramic tubes, a heating coil and insulating filling materials between the ceramic tubes are provided between the outer insulating ceramic tube and the inner exhaust heating ceramic tube.
[0011] In some embodiments, a high-temperature resistant O-ring is provided at the connection between the internal exhaust heating ceramic tube and the air intake joint, and at the connection between the thermocouple and the air intake joint.
[0012] In some embodiments, an outer insulation layer is provided on the outside of the outer insulating ceramic tube.
[0013] In some embodiments, the exhaust port of each exhaust end head is a flat structure.
[0014] In some embodiments, the distances between every two independent non-flow directional thickness precision control elements are the same, and every two opposing independent non-flow directional thickness precision control elements are staggered.
[0015] Furthermore, the two opposite exhaust ends are arranged horizontally, and their distances from the center line of the mold are the same.
[0016] The technical effects achieved by this application are:
[0017] 1. The device utilizes independent, non-flow-directed precision thickness control elements to precisely regulate the temperature field on both sides of the molten glass ribbon. This fine-tuning of the temperature field results in a more uniform distribution of the molten glass's physical properties, such as fluidity and solidification rate, in the non-flow direction, thereby expanding the range of areas that meet high-quality requirements. Consequently, even under production conditions outside the conventional size range, products that meet quality standards can be produced.
[0018] 2. Each control element independently adjusts the temperature within its zone. These temperature fields are carefully matched to optimize the solidification process of the molten glass in the non-flow direction. By precisely controlling the temperature of each zone, the solidified thickness of the molten glass can be finely adjusted, thereby improving the accuracy of the non-flow thickness. This high-precision control enables the production of products that meet more stringent precision specifications.
[0019] 3. Because the device precisely controls the temperature field of the molten glass, it reduces mold damage caused by temperature fluctuations or localized overheating, thereby extending the service life of the forming mold. Furthermore, stable temperature control reduces failure rates and downtime during production, significantly increasing the proportion of uptime. These improvements not only increase production efficiency but also reduce maintenance costs and downtime losses, ultimately significantly improving the overall efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic structural diagram of the utility model as a whole;
[0021] Figure 2 This is a front view schematic diagram of the spatial arrangement of the non-flow thickness precision control device of the utility model;
[0022] Figure 3 This is a top view schematic diagram of the spatial arrangement of the non-flow direction thickness precision control device of the utility model;
[0023] Figure 4 This is a side view schematic diagram of the spatial arrangement of the non-flow thickness precision control device of the utility model;
[0024] Figure 5 This is a schematic diagram of the core dimensions of the spatial arrangement of the non-flow thickness precision control device of the utility model;
[0025] Figure 6 This is a schematic diagram of the appearance of the independent non-flow direction thickness precision control element and the structural diagram of the exhaust end head of the utility model;
[0026] Figure 7 This is a cross-sectional view of the independent non-flow direction thickness precision control element of the utility model.
[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0028] 1. Independent non-flow thickness precision control element; 2. Mold; 3. Air inlet connector; 4. Air inlet; 5. Thermocouple; 6. External insulating ceramic tube; 7. Internal exhaust heating ceramic tube; 12. Exhaust terminal; 8. High-temperature seals at the ends of the internal and external ceramic tubes; 9. Heating coil; 10. Insulating filling material between ceramic tubes; 11. High-temperature resistant O-ring; 13. External insulation layer. DETAILED DESCRIPTION
[0029] In order to make the purpose and advantages of this application more clearly understood, the present application is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or several specific implementation methods of this application and does not strictly limit the scope of protection specifically requested by this application.
[0030] like Figure 1-7As shown, the technical solution adopted by the present application is as follows: a device for precisely controlling the non-flow thickness of flexible glass, comprising a mold 2, with multiple independent non-flow thickness precision control elements 1 provided on both sides of the mold 2 outlet;
[0031] Each independent non-flowing thickness precision control element 1 includes an air inlet connector 3, an air inlet 4 is provided on the top of the air inlet connector 3, a heating section is inserted into one side of the air inlet connector 3, and a thermocouple 5 is inserted into the other side of the air inlet connector 3;
[0032] The heating tube includes an outer insulating ceramic tube 6 arranged on one side of the air intake joint 3 and an inner exhaust heating ceramic tube 7 arranged inside the outer insulating ceramic tube 6. An exhaust end 12 is provided at one end of the inner exhaust heating ceramic tube 7, and the other end of the inner exhaust heating ceramic tube 7 is inserted into the air intake joint 3. High-temperature seals 8 at the ends of the inner and outer ceramic tubes, a heating coil 9 and insulating filling materials 10 between the ceramic tubes are provided between the outer insulating ceramic tube 6 and the inner exhaust heating ceramic tube 7.
[0033] Its working principle is:
[0034] When gas enters the intake connector 3, it flows toward the internal exhaust heating ceramic tube 7 inserted therein. At this point, the energized heating coil 9 generates a large amount of heat, which is quickly and evenly transferred to the internal exhaust heating ceramic tube 7. Because the internal exhaust heating ceramic tube 7 is in direct contact with the gas, its high-temperature tube wall efficiently transfers heat to the gas flowing within. The insulating filler material 10 between the ceramic tubes plays a vital role in this heating process. It not only effectively prevents heat loss, significantly improving heating efficiency and reducing energy consumption, but also ensures good electrical insulation between the outer insulating ceramic tube 6 and the inner exhaust heating ceramic tube 7, preventing current leakage and short circuits, ensuring a safe and stable heating process. High-temperature sealants 8 at the ends of the inner and outer ceramic tubes tightly seal the gap between the outer insulating ceramic tube 6 and the inner exhaust heating ceramic tube 7, preventing gas from escaping from these ends without being fully heated. This ensures that the gas can fully absorb heat during flow and achieve the desired heating effect. The fully heated gas continuously flows along the interior of the inner exhaust heating ceramic tube 7 and is ultimately discharged through an exhaust terminal 12 located at one end of the inner exhaust heating ceramic tube 7. Simultaneously, a thermocouple 5 inserted on the other side of the gas inlet connector 3 monitors the gas temperature inside the connector 3 in real time. Multiple independent non-directional thickness precision control elements 1 located on both sides of the mold 2 outlet work in conjunction with each other. The precisely temperature-controlled gas discharged from each element acts on the flexible glass exiting the mold 2 outlet at a specific angle and velocity. By uniformly and precisely regulating the temperature of different parts of the glass and changing the local physical properties of the glass, such as viscosity and surface tension, we can achieve high-precision and consistent precision control of the non-flow thickness of the flexible glass, ensuring that the thickness of the produced flexible glass in the non-flow direction meets the design requirements, thereby improving the quality and performance of the product.
[0035] Among them, the connection between the internal exhaust heating ceramic tube 7 and the air intake connector 3, as well as the connection between the thermocouple 5 and the air intake connector 3 are both provided with a high-temperature resistant O-ring 11. This arrangement can further enhance the sealing of the connection parts, effectively prevent gas leakage, and ensure the stability of gas flow and the accuracy of temperature control.
[0036] At the same time, an outer insulation layer 13 is provided on the outside of the outer insulating ceramic tube 6 , and the outer insulation layer 13 can be used to keep the temperature high and prevent the temperature from changing too much.
[0037] The exhaust port of each exhaust terminal 12 is a flat structure (ie Figure 6 The flat exhaust port facilitates a more uniform and stable airflow distribution, which is crucial for precise temperature control of the molten glass. Hot air discharged through the flat exhaust port more evenly coats the surface of the molten glass, reducing temperature fluctuations and the risk of localized overheating, thereby ensuring consistent glass thickness and quality during the drawing process.
[0038] Furthermore, the spacing between each two independent non-flow thickness precision control elements 1 is the same, and each two opposing independent non-flow thickness precision control elements 1 are staggered. This layout can more effectively cover the entire width of the glass ribbon and achieve comprehensive and precise control of the non-flow thickness.
[0039] Furthermore, this device is installed at the position before the glass officially begins to be thinned (below the bottom outlet of the mold 2). It is composed of two series of independent non-flowing thickness precision control elements 1, which are respectively arranged on both sides of the ribbon of molten glass flowing from the bottom outlet of the mold 2, opposite the exhaust port, completely covering the corresponding flow area of the ribbon of molten glass at this location. The spacing between adjacent independent non-flowing thickness precision control elements 1 in each series is the same, and the staggered spacing between the relatively independent non-flowing thickness precision control elements 1 in the two series is both.
[0040] Two opposing exhaust tips 12 are positioned horizontally, equidistant from the centerline of the mold 2, to ensure consistent conditions across all control areas during the flexible glass thinning process, enabling precise control of non-flow thickness. These horizontal exhaust tips 12 evenly distribute airflow, avoiding unnecessary temperature gradients or airflow disturbances, which are crucial for maintaining stability during the thinning process.
[0041] Furthermore, the mold 2 is positioned at the same distance from the exhaust terminals 12 on both sides, further ensuring that the entire width of the molten glass ribbon receives the same or similar heat treatment effect. This design helps reduce thickness unevenness caused by positional differences and improves the quality and consistency of glass products.
[0042] Further explanation: The distance between this device and the bottom outlet of the mold 2 ranges from 10mm to 50mm, with an optimal value of 25mm. The spacing between adjacent independent non-flow precision thickness control elements 1 in a series ranges from 10mm to 30mm, with an optimal value of 20mm. The staggered spacing between two relatively independent non-flow precision thickness control elements 1 in two series ranges from 10mm to 50mm, with an optimal value of 15mm.
[0043] It should be added that: when producing flexible glass by the down-draw method, if the size of the thinning force (gravity + traction force) is changed alone, the non-flow thickness is almost synchronously thinned (formed), and the change trend and distribution ratio of the non-flow thickness are almost unaffected. The present application is installed at the position before the glass ribbon is formally thinned. It adjusts the glass liquid temperature in the corresponding area by controlling the temperature and flow rate of the air sprayed by different independent non-flow thickness precision control elements 1, and appropriately heats up the area with large thickness and cools down the area with small thickness). After this optimized glass ribbon enters the formal thinning stage, under the action of the same thinning force (gravity + traction force), the non-flow thickness will undergo corresponding changes: the heated area will become thinner, the cooled area will become thicker, and the thickness of the area with unchanged temperature will remain almost unchanged. Repeated adjustments are made until the non-flow indicators (effective width, dimensional accuracy) of the effective target area meet the standards. Adjust the slender slit of the exhaust end 12 from horizontal to vertical, translate the position in the non-flow thickness direction, align the slender slit with the local abnormal position of the non-flow thickness, and adjust it according to the previous method to partially eliminate the local mutation of the non-flow thickness within 10mm.
[0044] The heating coil 9 can be adjusted to achieve the effect of regulating the temperature. The heating coil 9 generates heat through the current, and this heat is transferred to the heated object (such as glass liquid), thereby achieving the temperature control of the object. By adjusting the parameters such as the power, current or voltage of the heating coil 9, the heat generated can be changed, thereby achieving the effect of regulating the temperature. When the thermocouple monitors a specific temperature, the temperature is regulated by adjusting the heating coil 9.
[0045] The operating principle of this application is as follows: when gas enters the air inlet connector 3, it flows to the internal exhaust heating ceramic tube 7 inserted therein. At this point, the energized heating coil 9 generates a large amount of heat, which is quickly and evenly transferred to the internal exhaust heating ceramic tube 7. Because the internal exhaust heating ceramic tube 7 is in direct contact with the gas, its high-temperature tube wall can efficiently transfer heat to the gas flowing inside. During this heating process, the insulating filler material 10 between the ceramic tubes plays a vital role. It not only effectively prevents heat loss, significantly improving heating efficiency and reducing energy consumption, but also ensures good electrical insulation between the outer insulating ceramic tube 6 and the inner exhaust heating ceramic tube 7, preventing current leakage and short circuits, ensuring a safe and stable heating process. High-temperature sealants 8 at the ends of the inner and outer ceramic tubes tightly seal the gap between the outer insulating ceramic tube 6 and the inner exhaust heating ceramic tube 7, preventing gas from escaping from these ends without being fully heated. This ensures that the gas can fully absorb heat during flow and achieve the desired heating effect. The fully heated gas continuously flows along the interior of the inner exhaust heating ceramic tube 7 and is ultimately discharged through an exhaust terminal 12 located at one end of the inner exhaust heating ceramic tube 7. Simultaneously, a thermocouple 5 inserted on the other side of the gas inlet connector 3 monitors the gas temperature inside the connector 3 in real time. Multiple independent non-directional thickness precision control elements 1 located on both sides of the mold 2 outlet work in conjunction with each other. The precisely temperature-controlled gas discharged from each element acts on the flexible glass exiting the mold 2 outlet at a specific angle and velocity. By uniformly and precisely regulating the temperature of different parts of the glass and changing the local physical properties of the glass, such as viscosity and surface tension, we can achieve high-precision and consistent precision control of the non-flow thickness of the flexible glass, ensuring that the thickness of the produced flexible glass in the non-flow direction meets the design requirements, thereby improving the quality and performance of the product.
[0046] The above is merely a preferred embodiment of the present application. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present application, and such improvements and modifications should be considered within the scope of protection of the present application. Structures, devices, and operating methods not specifically described or explained in this application shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.
Claims
1. A device for precisely controlling the non-flow thickness of flexible glass, comprising a mold (2), characterized in that: A plurality of independent non-flow-direction thickness precision control elements (1) are provided on both sides of the die (2) outlet; Each of the independent non-flow-direction thickness precision control elements (1) comprises an air inlet connector (3), an air inlet (4) is provided on the top of the air inlet connector (3), a heating section is inserted into one side of the air inlet connector (3), and a thermocouple (5) is inserted into the other side of the air inlet connector (3); The heating section comprises an outer insulating ceramic tube (6) arranged on one side of the air inlet joint (3), an inner exhaust heating ceramic tube (7) is arranged inside the outer insulating ceramic tube (6), an exhaust terminal (12) is arranged at one end of the inner exhaust heating ceramic tube (7), the other end of the inner exhaust heating ceramic tube (7) is inserted into the air inlet joint (3), and inner and outer ceramic tube end high-temperature sealants (8), a heating coil (9) and an insulating filling material (10) between the ceramic tubes are arranged between the outer insulating ceramic tube (6) and the inner exhaust heating ceramic tube (7).
2. The device for precisely controlling the non-flow thickness of flexible glass according to claim 1, characterized in that: The connection between the internal exhaust heating ceramic tube (7) and the air intake joint (3) and the connection between the thermocouple (5) and the air intake joint (3) are both provided with a high-temperature resistant O-shaped sealing ring (11).
3. The device for precisely controlling the non-flow thickness of flexible glass according to claim 1, characterized in that: An outer thermal insulation layer (13) is provided on the outer side of the outer insulating ceramic tube (6).
4. The device for precisely controlling the non-flow thickness of flexible glass according to claim 1, characterized in that: The exhaust port of each exhaust terminal (12) is a flat structure.
5. The device for precisely controlling the non-flow thickness of flexible glass according to claim 1, characterized in that: The distance between each two independent non-flow direction thickness precision control elements (1) is the same, and each two relatively independent non-flow direction thickness precision control elements (1) are staggered.
6. The device for precisely controlling the non-flow thickness of flexible glass according to claim 1, characterized in that: The two opposite exhaust end heads (12) are arranged horizontally and are at the same distance from the center line of the mold (2).