A float process for high-alumina ultra-thin flexible electronic glass annealing device and method

Abstract

A kind of float high-alumina ultra-thin flexible electronic glass annealing device and method, including annealing kiln, multiple electric heaters are arranged in annealing kiln, each electric heater is staggered arrangement, multiple openings are opened in the top surface of annealing kiln, and mobile temperature measuring mechanism is arranged on the opening;The electric heater includes heating groove, the septum is arranged in heating groove, the septum is divided into multiple heating cavities, and electric heating rod with adjustable power is arranged in each heating cavity;The mobile temperature measuring mechanism includes support frame connected to the opening, folding telescopic heat shield is arranged on the support frame, track perpendicular to the glass conveying direction is arranged on the both sides of support frame, electric trolley is arranged on the track, folding telescopic heat shield middle part is fixedly connected with electric trolley, and infrared thermometer is installed on the trolley.The present application is used to solve the problem that the heat of ultra-thin glass dissipates extremely fast, which leads to the difficulty in controlling the transverse temperature uniformity and longitudinal temperature gradient of glass.

Description

Technical Field

[0001] This invention relates to an annealing apparatus and method for float glass high-alumina ultrathin flexible electronic glass. Background Technology

[0002] With the rapid advancement of electronic technology, more and more electronic devices are developing towards thinner, lighter, more flexible, and wearable designs. High-alumina ultrathin flexible glass, possessing properties such as wear resistance, good light transmittance, high strength, bendability, and good resilience, is considered an important development direction for flexible folding materials in new display applications. It is expected to be widely used in foldable phones, foldable laptops, rollable displays, and other flexible display products, showing broad application prospects. However, high-alumina ultrathin flexible electronic glass faces challenges due to its difficult molding process, uncontrollable annealing, significant cutting losses, and low yield. Annealing uniformity, in particular, directly determines the cutting yield and the company's profitability, making entry into the flexible glass market in the float glass high-alumina field a high-barrier endeavor. The substrate of high-alumina flexible electronic glass requires an ultrathin thickness of ≤0.25mm. During annealing, this ultrathin thickness leads to rapid heat loss from the glass body, making the control of lateral temperature uniformity and longitudinal temperature gradient particularly important and challenging. Summary of the Invention

[0003] The purpose of this invention is to provide an annealing apparatus and method for float glass with high alumina and ultrathin flexible electronic glass, which solves the problem that ultrathin glass loses heat very quickly, making it difficult to control the transverse temperature uniformity and longitudinal temperature gradient of the glass.

[0004] To solve the above problems, the technical solution of the present invention is as follows:

[0005] An annealing apparatus for float high-alumina ultrathin flexible electronic glass includes an annealing furnace, in which multiple electric heaters are provided, arranged alternately in the upper and lower parts, and multiple openings are provided on the top surface of the annealing furnace, with a movable temperature measuring mechanism provided on the openings.

[0006] The electric heater includes a heating tank, and a partition is provided in the heating tank to divide the heating tank into multiple heating chambers. Each heating chamber is provided with an electric heating rod with adjustable power.

[0007] The mobile temperature measuring mechanism includes a support frame connected to the opening, a folding telescopic heat insulation cover on the support frame, and tracks perpendicular to the glass conveying direction on both sides of the support frame. An electric trolley is set on the tracks, and the middle part of the folding telescopic heat insulation cover is fixedly connected to the electric trolley. An infrared thermometer is installed on the trolley.

[0008] An infrared thermometer is fitted with a jacket, which is connected to an inlet pipe and a drain pipe.

[0009] The foldable telescopic heat insulation cover includes a surface heat insulation board, a middle layer of asbestos insulation cotton, and a bottom layer of asbestos insulation cloth.

[0010] The application discloses a method for annealing high-aluminum ultra-thin flexible electronic glass, and the method comprises the following steps: moving a trolley carrying an infrared temperature detector transversely to measure the temperature of the glass and obtain the transverse temperature difference of the glass during the conveying of the glass in an annealing kiln, and then adjusting the temperature of each electric heating rod in an electric heater according to the transverse temperature difference of the glass.

[0011] The application has the beneficial effects that: the infrared temperature detector is used to continuously measure the temperature of the glass in the transverse direction, the abnormal temperature points in the transverse direction are found out, the median value of the temperature in the transverse direction is returned by adjusting the electric heating rod, the local temperature abnormality is eliminated, the temperature uniformity of the glass plate is improved, and the yield of the high-aluminum ultra-thin flexible glass is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The application will be further described below in combination with the drawings:

[0013] Figure 1 It is a schematic view of the three-dimensional structure of the application,

[0014] Figure 2 It is a schematic view of the three-dimensional structure of the application,

[0015] Figure 3 It is a schematic view of the three-dimensional structure of the application about the electric heater,

[0016] Figure 4 It is a schematic view of the structure of the application about the moving temperature measuring mechanism,

[0017] Figure 5 It is a schematic view of the structure of the application about the moving temperature measuring mechanism,

[0018] Figure 6 It is a schematic view of the cross section of the application about the moving temperature measuring mechanism,

[0019] Figure 7 It is a schematic view of the front structure of the application.

[0020] In the drawings: annealing kiln 100, moving temperature measuring mechanism 200, support frame 201, electric trolley 202, folding telescopic heat shield 203, infrared temperature detector 204, jacket 205, heat insulation plate 206, heat insulation cotton 207, heat insulation cloth 208, electric heater 300, heating groove 301, electric heating rod 302, spacer 303, slag box 400, partition sealing element 500. DETAILED DESCRIPTION

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 7 As shown, an annealing device for float high-alumina ultrathin flexible electronic glass includes an annealing furnace 100, in which multiple electric heaters 300 are provided, and the electric heaters 300 are arranged alternately in the upper and lower parts. Multiple openings are provided on the top surface of the annealing furnace 100, and a movable temperature measuring mechanism 200 is provided on the openings.

[0023] The electric heater includes a heating tank 301, and a partition 303 is provided in the heating tank 301. The partition 303 divides the heating tank 301 into multiple heating chambers. Each heating chamber is provided with an electric heating rod 302 with adjustable power. By adjusting the power of the heating rod, the heating temperature of each heating chamber in the same heating tank 301 can be adjusted.

[0024] The mobile temperature measuring mechanism 200 includes a support frame 201 connected to a rectangular opening. A folding and telescopic heat insulation cover 203 is mounted on the support frame 201. Tracks perpendicular to the glass conveying direction are provided on both sides of the support frame 201. An electric trolley 202 is mounted on the tracks. The folding and telescopic heat insulation cover 203 is fixedly connected to the electric trolley 202 in the middle. An infrared thermometer 204 is mounted on the trolley. The moving electric trolley 202 detects the lateral temperature of the glass.

[0025] An infrared thermometer 204 is surrounded by a jacket 205, which is connected to a water inlet pipe and a water outlet pipe. Cooling water is continuously supplied into the jacket 205 to cool the infrared thermometer 204.

[0026] The folding and telescopic heat insulation cover 203 includes a surface heat insulation board 206, a middle layer of asbestos insulation cotton 207, and a bottom layer of asbestos insulation cloth 208. The folding and telescopic heat insulation cover 203 is used to block the heat emitted by the annealing furnace 100, preventing the heat from being conducted to the electric trolley 202 and affecting the use of the electric trolley 202.

[0027] The foldable telescopic heat insulation cover 203 is U-shaped. The U-shaped foldable telescopic heat insulation cover 203 can cover the support frame 201, further reducing heat loss.

[0028] The discharge end of the annealing furnace 100 is connected to the slag box 400 through a partitioning seal 500, the partitioning seal comprises a partition plate, a through hole for the glass to pass through is formed in the partition plate, the electric heater 300 and the moving temperature measuring mechanism 200 are also arranged on the slag box 400, so that the yield of the glass can be further improved.

[0029] The method of the float method high-aluminum ultra-thin flexible electronic glass annealing device, during the conveying of the glass in the annealing furnace 100, the trolley carries the infrared temperature measuring instrument 204 to move transversely to measure the temperature of the glass, so as to obtain the transverse temperature difference of the glass, through the plurality of infrared temperature measuring instruments 204 in the conveying direction of the glass, the longitudinal temperature difference of the glass is obtained, and then the temperature of each electric heating rod 302 in the electric heater 300 is adjusted according to the transverse temperature difference and the longitudinal temperature difference of the glass, so that the glass is uniformly cooled.

[0030] For example, when the high-aluminum ultra-thin flexible glass ≤0.25mm is produced, when the glass passes through the A section, the infrared temperature measuring instrument 204 detects that the transverse temperature difference of the glass is 12℃, and then the temperature of each heating rod in the heating cavity in the A section is adjusted, that is, the temperature of the heating rod facing the place with high transverse temperature of the glass is low, the temperature of the heating rod facing the place with low transverse temperature of the glass is high, and the temperature difference of each heating rod in the same heating groove 301 is required to be controlled within 6℃; when the glass passes through the B section, the infrared temperature measuring instrument 204 detects that the transverse temperature difference of the glass is 9℃, and then the temperature difference of the heating rod is controlled within about 5℃; that is, the temperature of the heating rod changes with the temperature of the glass during the conveying of the glass in the annealing furnace 100 (the A section, the B section, the C section and the D section), and the temperature difference of the heating rod is lower than the temperature difference of the glass, so that the cutting yield of the glass can be greatly improved.

[0031] The content described in the embodiments of the present specification is only a list of implementation forms of the inventive concept, and the protection scope of the present application should not be regarded as being limited to the specific forms described in the embodiments, and the protection scope of the present application also extends to equivalent technical means that can be thought of by those skilled in the art according to the inventive concept.

Claims

1. A float high alumina ultra-thin flexible electronic glass annealing method, characterized in that: The application relates to an annealing device, which comprises an annealing furnace (100) provided with a plurality of electric heaters (300) staggered in up-down direction, a plurality of openings are formed on the top surface of the annealing furnace (100), and a movable temperature measuring mechanism (200) is arranged on the openings; the electric heater comprises a heating groove (301) provided with a partition piece (303) for separating the heating groove (301) into a plurality of heating cavities, and an electric heating rod (302) with adjustable power is arranged in each heating cavity; the movable temperature measuring mechanism (200) comprises a support frame (201) communicated with the openings, a folding telescopic heat insulation cover (203) is arranged on the support frame (201), rails perpendicular to the glass conveying direction are arranged on the two sides of the support frame (201), an electric trolley (202) is arranged on the rails, the folding telescopic heat insulation cover (203) is fixedly connected with the electric trolley (202) at the middle part, and an infrared temperature measuring instrument (204) is arranged on the trolley; the method comprises the following steps: during the conveying process of the glass in the annealing furnace (100), the trolley carries the infrared temperature measuring instrument (204) to move transversely to measure the temperature of the glass, the transverse temperature difference of the glass is obtained, a plurality of infrared temperature measuring instruments (204) in the conveying direction of the glass are used to obtain the longitudinal temperature difference of the glass, and then the temperature of each electric heating rod (302) in the electric heater (300) is adjusted according to the transverse temperature difference and the longitudinal temperature difference of the glass, so that the glass is uniformly cooled.

2. The float high-alumina ultra-thin flexible electronic glass annealing method according to claim 1, characterized in that: A jacket (205) is arranged outside the infrared temperature measuring instrument (204), and a water inlet pipe and a water outlet pipe are communicated with the jacket (205).

3. The float high-alumina ultra-thin flexible electronic glass annealing method according to claim 1, characterized in that: The folding telescopic heat insulation cover (203) comprises a surface layer heat insulation plate (206), a middle layer asbestos heat insulation cotton (207) and a bottom layer asbestos heat insulation cloth (208).

4. The float high-alumina ultra-thin flexible electronic glass annealing method according to claim 1, characterized in that: The folding telescopic heat insulation cover (203) is U-shaped.

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