A production process for ultra-thin flexible glass

Abstract

The present invention relates to the technical field of glass production and preparation technology, and in particular to a production and preparation process of ultra-thin flexible glass, the steps of which are as follows: step one: material preparation; step two: material mixing; step three: injection molding; step four: cutting and edging; step five: tempering treatment; a tempering device comprises a processing table, a first conveyor belt is installed on the upper end of the processing table, a preheating device is installed above the first conveyor belt, a tempering pool is installed at the rear end of the first conveyor belt, a second conveyor belt is installed at the rear end of the tempering pool, and air cooling devices are installed at the upper and lower ends of the second conveyor belt; in the present invention, by carefully selecting a raw material combination of glass powder, a tempering agent and an additive, it is ensured that the ultra-thin flexible glass has excellent physical and chemical properties, through the tempering treatment, a compressive stress layer is formed on the glass surface, the strength and impact resistance of the glass are significantly improved, and the ion exchange reaction is used to make the stress distribution inside the glass more uniform, thereby extending the service life of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of glass production and preparation technology, and in particular to a production and preparation technology for ultra-thin flexible glass. Background Art

[0002] With the accelerated iteration of 5G and AI information technology and the continuous improvement of human-computer interaction needs, flexible display has become a hot area leading a new round of changes in the display industry. Ultra-thin flexible glass, as one of the key materials for flexible display, has broad market prospects and development space.

[0003] Currently, during the production and preparation process of ultra-thin flexible glass, thinning and edge processing are often performed directly, resulting in low impact resistance and lack of bendability after the ultra-thin flexible glass is produced, which greatly reduces the scope of use of the ultra-thin flexible glass.

[0004] Therefore, in view of the problem that the above-mentioned traditional ultra-thin flexible glass is often directly thinned and edge-processed during the production and preparation process, resulting in low impact resistance and lack of bendability after the ultra-thin flexible glass is produced, a production and preparation process for ultra-thin flexible glass can be designed so that the ultra-thin flexible glass has higher impact resistance while ensuring bending. Summary of the invention

[0005] In order to overcome the problem that traditional ultra-thin flexible glass is often directly thinned and edge processed during the production process, resulting in low impact resistance of the ultra-thin flexible glass after production.

[0006] The technical solution of the present invention is: a production process for ultra-thin flexible glass, the steps of which are as follows:

[0007] Step 1: Material preparation

[0008] First, glass powder, a tempering agent and an additive are prepared as raw materials, wherein the tempering agent is any one of potassium salt and sodium salt, and the additive comprises 51% to 69% silicon dioxide, 2.2% to 9.8% aluminum oxide and 0.12% to 0.96% fluoride;

[0009] Step 2: Mixing materials

[0010] Put the above raw materials into a mixer to mix the glass powder, tempering agent and additives evenly, then start the filter to remove particles and impurities, and the mixing time is between 1.1 and 1.9 hours;

[0011] Step 3: Injection molding

[0012] The filtered mixture, i.e., the glass liquid, is poured into a preheated mold, the mold preheating temperature is between 510 and 790°C, and then the glass liquid in the mold is injection molded using an injection molding machine, and the injection molding pressure is between 12 and 45 MPa;

[0013] Step 4: Cutting and edging

[0014] Use a cutting machine to cut the glass into appropriate sizes with a cutting accuracy within ±0.1mm, and then use an edge grinder to remove burrs on the edges;

[0015] Step 5: Tempering

[0016] After the glass is cleaned and dried, it is placed in a tempering device for preheating at a temperature between 410 and 480°C. Then, the prepared molten salt solution is added and the glass is immersed in the molten salt solution for ion exchange reaction. The reaction time is between 2.5 hours and 8 hours. After the reaction is completed, it is cooled to room temperature.

[0017] Preferably, the tempering device includes a processing table, a first conveyor belt is installed at the upper end of the processing table, a preheating device is installed above the first conveyor belt, a tempering pool is installed at the rear end of the first conveyor belt, a second conveyor belt is installed at the rear end of the tempering pool, and air cooling devices are installed at the upper and lower ends of the second conveyor belt.

[0018] Preferably, a reaction cavity is provided inside the tempering tank, a first servo motor is installed at the side end of the processing table, a main gear is installed at the outer side of the output shaft of the first servo motor, and driven gears are meshed and connected at both ends of the outer side of the main gear.

[0019] Preferably, a stirring rod is installed at the side end of the driven gear, and multiple groups of stirring rotors are fixedly connected to the outside of the stirring rod. A bottom separation screen is installed above the stirring rotor inside the reaction cavity, and multiple groups of side separation screens are evenly distributed on the upper end of the bottom separation screen.

[0020] Preferably, a fixed top plate is installed at the side end of the preheating device, a guide protection frame is installed at the center of the upper end of the fixed top plate, a second servo motor is installed on one side inside the guide protection frame, an adjusting screw is installed at the output end of the second servo motor, and a screw slider is connected to the outer side of the adjusting screw.

[0021] Preferably, a telescopic cylinder is installed at the lower end of the screw slider, a linkage lifting plate is installed at the piston end of the telescopic cylinder, a rotating motor is installed at the lower end of the linkage lifting plate, and a rotating shaft is installed at the output end of the rotating motor.

[0022] Preferably, a bidirectional cylinder is installed at the lower end of the rotating shaft, and two end clamping vertical plates are installed at the piston end of the bidirectional cylinder, and anti-slip clamping plates are installed inside the two end clamping vertical plates.

[0023] Preferably, the air cooling device includes an air cooling box, a third servo motor is installed on the side end of the air cooling box, a main pulley is installed on the outer side of the output shaft of the third servo motor, a belt is connected to the outer side of the main pulley for transmission, a slave pulley is connected to the outer side of the belt for transmission, synchronous screws are installed on the outer sides of the main pulley and the slave pulley, an auxiliary air cooling frame is installed under the second conveyor belt, heat dissipation blowing ports are provided on the ends of the air cooling box and the auxiliary air cooling frame close to the second conveyor belt, and exhaust ports are provided on the ends of the air cooling box and the auxiliary air cooling frame away from the second conveyor belt.

[0024] Preferably, a synchronous movable block is transmission-connected to the outer side of the synchronous screw, and guide fixing strips are fixedly connected to both sides of the inside of the air cooling box and the auxiliary air cooling frame plate.

[0025] Preferably, a guide slot that matches with the two ends of the synchronous movable block is provided inside the guide fixing strip, a cooling fan is installed at the lower end of the synchronous movable block, and a controller is electrically connected to the outside of the cooling fan.

[0026] The beneficial effects of the present invention are as follows: the process ensures that the ultra-thin flexible glass has excellent physical and chemical properties by carefully selecting the raw material combination of glass powder, tempering agent and additives. The precise ratio of additives can improve the strength, wear resistance and corrosion resistance of the glass. The particles and impurities are removed by starting the filter, which effectively improves the purity and quality of the glass. The precise control of the mold preheating temperature and injection pressure helps to achieve rapid and uniform injection molding of the glass liquid. Through the tempering treatment, a compressive stress layer is formed on the glass surface, which significantly improves the strength and impact resistance of the glass. At the same time, the ion exchange reaction is used to make the stress distribution inside the glass more uniform, thereby extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the first conveyor belt in the production process of the ultra-thin flexible glass of the present invention;

[0028] Figure 2 Shown is a schematic diagram of the three-dimensional structure of the air cooling device in the production process of the ultra-thin flexible glass of the present invention;

[0029] Figure 3 Shown is a schematic diagram of the internal structure of the reaction cavity in the production process of the ultra-thin flexible glass of the present invention;

[0030] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the anti-slip splint in the production process of the ultra-thin flexible glass of the present invention;

[0031] Figure 5 Shown is a schematic diagram of the internal three-dimensional structure of the air cooling box in the production process of the ultra-thin flexible glass of the present invention;

[0032] Figure 6 What is shown is a schematic diagram of the three-dimensional structure of the guide fixing strip in the production process of the ultra-thin flexible glass of the present invention.

[0033] Description of the accompanying drawings: 1, processing table; 2, first conveyor belt; 3, preheating device; 4, tempering tank; 5, second conveyor belt; 6, air cooling device; 401, reaction cavity; 402, first servo motor; 403, main gear; 404, driven gear; 405, stirring rod; 406, stirring rotor; 407, bottom separation screen; 408, side separation screen; 409, fixed top plate; 410, guide protection frame; 411, second servo motor; 412, adjustment screw rod; 413, screw rod slider; 414, extension Retractable cylinder; 415, linkage lifting plate; 416, rotating motor; 417, rotating shaft; 418, bidirectional cylinder; 419, clamping vertical plates at both ends; 420, anti-skid splint; 601, air cooling box; 602, third servo motor; 603, main pulley; 604, belt; 605, slave pulley; 606, synchronous screw; 607, synchronous movable block; 608, auxiliary air cooling frame plate; 609, guide fixing strip; 610, guide slide; 611, cooling fan; 612, heat dissipation nozzle; 613, with controller. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] See also Figure 1-Figure 6 The present invention provides an embodiment: a production process for ultra-thin flexible glass, the steps of which are as follows:

[0036] Step 1: Material preparation

[0037] First, glass powder, a tempering agent and an additive are prepared as raw materials, wherein the tempering agent is any one of potassium salt and sodium salt, and the additive comprises 51% to 69% silicon dioxide, 2.2% to 9.8% aluminum oxide and 0.12% to 0.96% fluoride;

[0038] Step 2: Mixing materials

[0039] Put the above raw materials into a mixer to mix the glass powder, tempering agent and additives evenly, then start the filter to remove particles and impurities, and the mixing time is between 1.1 and 1.9 hours;

[0040] Step 3: Injection molding

[0041] The filtered mixture, i.e., the glass liquid, is poured into a preheated mold, the mold preheating temperature is between 510 and 790°C, and then the glass liquid in the mold is injection molded using an injection molding machine, and the injection molding pressure is between 12 and 45 MPa;

[0042] Step 4: Cutting and edging

[0043] Use a cutting machine to cut the glass into appropriate sizes with a cutting accuracy within ±0.1mm, and then use an edge grinder to remove burrs on the edges;

[0044] Step 5: Tempering

[0045] After the glass is cleaned and dried, it is placed in a tempering device for preheating at a temperature between 410 and 480°C. Then, the prepared molten salt solution is added and the glass is immersed in the molten salt solution for ion exchange reaction. The reaction time is between 2.5 hours and 8 hours. After the reaction is completed, it is cooled to room temperature.

[0046] See also Figure 1-Figure 4 In this embodiment, the tempering device includes a processing table 1, a first conveyor belt 2 is installed at the upper end of the processing table 1, a preheating device 3 is installed above the first conveyor belt 2, a tempering pool 4 is installed at the rear end of the first conveyor belt 2, a second conveyor belt 5 is installed at the rear end of the tempering pool 4, and air cooling devices are installed at the upper and lower ends of the second conveyor belt 5. A reaction cavity 401 is opened inside the tempering pool 4, a first servo motor 402 is installed at the side end of the processing table 1, a main gear 403 is installed on the outer side of the output shaft of the first servo motor 402, and both ends of the outer side of the main gear 403 are meshed and connected with driven gears 404, and a stirring rod 405 is installed on the side end of the driven gear 404, and a plurality of stirring rotors 406 are fixedly connected to the outer side of the stirring rod 405, and a bottom separation leakage net 407 inside the reaction cavity 401 is installed above the stirring rotor 406, and the upper end of the bottom separation leakage net 407 is equidistantly spaced. A plurality of side separation screens 408 are arranged, a fixed top plate 409 is installed at the side end of the preheating device 3, a guide protection frame 410 is installed at the center of the upper end of the fixed top plate 409, a second servo motor 411 is installed on one side of the inner part of the guide protection frame 410, an adjusting screw rod 412 is installed at the output end of the second servo motor 411, a screw slider 413 is connected to the outer side of the adjusting screw rod 412 for transmission, a telescopic cylinder 414 is installed at the lower end of the screw slider 413, a linkage lifting plate 415 is installed at the piston end of the telescopic cylinder 414, a rotating motor 416 is installed at the lower end of the linkage lifting plate 415, a rotating shaft 417 is installed at the output end of the rotating motor 416, a bidirectional cylinder 418 is installed at the lower end of the rotating shaft 417, and a clamping vertical plate 419 at both ends is installed at the piston end of the bidirectional cylinder 418, and an anti-slip plywood 420 is installed on the inner side of the clamping vertical plate 419 at both ends.

[0047] See also Figure 5-Figure 6In this embodiment, the air cooling device 6 includes an air cooling box 601, a third servo motor 602 is installed at the side end of the air cooling box 601, a main pulley 603 is installed on the outer side of the output shaft of the third servo motor 602, a belt 604 is connected to the outer side of the main pulley 603, a slave pulley 605 is connected to the outer side of the belt 604, a synchronous screw 606 is installed on the outer side of the main pulley 603 and the slave pulley 605, an auxiliary air cooling frame plate 608 is installed below the second conveyor belt 5, and the air cooling box 601 and the auxiliary air cooling frame plate 608 are inside the end near the second conveyor belt 5 Both are provided with heat dissipation blowing ports 612, and exhaust ports are provided at the ends of the air cooling box 601 and the auxiliary air cooling frame plate 608 away from the second conveyor belt 5, the outer side of the synchronous screw 606 is transmission-connected with a synchronous movable block 607, and both sides of the air cooling box 601 and the auxiliary air cooling frame plate 608 are fixedly connected with guide fixing strips 609, and the guide fixing strips 609 are provided with guide grooves 610 that fit with the two ends of the synchronous movable block 607, and a cooling fan 611 is installed at the lower end of the synchronous movable block 607, and the outer side of the cooling fan 611 is electrically connected to a controller 613.

[0048] When the glass is tempered, the glass first passes through the first conveyor belt 2, the preheating device 3 is started for preheating, and then the second servo motor 411 is started, and the screw rod 412 is adjusted to drive the screw rod slider 413 to rotate, and drive the anti-skid clamping plate 420 to move horizontally, and then the telescopic cylinder 414 drives the anti-skid clamping plate 420 to move downward, and the bidirectional cylinder 418 is started according to different glass specifications to drive the anti-skid clamping plate 420 to extend and retract, and the rotating motor 416 is started to rotate at the same time, and the preheated glass is stably clamped and placed in the reaction tank formed by the bottom separation screen 407 and the side separation screen 408;

[0049] Starting the first servo motor 402 can drive the main gear 403 to rotate, so that the driven gear 404 drives the two sets of stirring rods 405 to rotate synchronously, and then drives the stirring rotor 406 to rotate, and stirs the molten salt liquid to accelerate the reaction. When the reaction is completed, repeat the above clamping operation, use the anti-slip clamping plate 420 to clamp the glass, and then start the telescopic cylinder 414 to drive the glass to move upward, and further drive the glass to move backward through the screw slider 413 to place it on the first conveyor belt 2;

[0050] Then start the third servo motor 602, the main pulley 603 can drive the belt 604 to rotate, so that the slave pulley 605 can rotate, and then drive the synchronous screw 606 to drive the synchronous movable block 607 to move horizontally, thereby driving the two sets of cooling fans 611 to move synchronously and adjust to quickly blow air to cool the glass on the first conveyor belt 2.

[0051] Through the above steps, the process ensures that the ultra-thin flexible glass has excellent physical and chemical properties by carefully selecting the raw material combination of glass powder, tempering agent and additives. The precise ratio of additives can improve the strength, wear resistance and corrosion resistance of the glass. By starting the filter to remove particles and impurities, the purity and quality of the glass are effectively improved. The precise control of the mold preheating temperature and injection pressure helps to achieve rapid and uniform injection molding of the glass liquid. Through the tempering treatment, a compressive stress layer is formed on the glass surface, which significantly improves the strength and impact resistance of the glass. At the same time, the ion exchange reaction is used to make the stress distribution inside the glass more uniform, so as to solve the problem that traditional ultra-thin flexible glass is often directly thinned and edge-processed during the production and preparation process, resulting in low impact resistance of the ultra-thin flexible glass after production.

[0052] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A production process for ultra-thin flexible glass, characterized in that: The steps are as follows: Step 1: Material preparation First, glass powder, a tempering agent and an additive are prepared as raw materials, wherein the tempering agent is any one of potassium salt and sodium salt, and the additive comprises 51% to 69% silicon dioxide, 2.2% to 9.8% aluminum oxide and 0.12% to 0.96% fluoride; Step 2: Mixing materials Put the above raw materials into a mixer to mix the glass powder, tempering agent and additives evenly, then start the filter to remove particles and impurities, and the mixing time is between 1.1 and 1.9 hours; Step 3: Injection molding The filtered mixture, i.e., the glass liquid, is poured into a preheated mold, the mold preheating temperature is between 510 and 790°C, and then the glass liquid in the mold is injection molded using an injection molding machine, and the injection molding pressure is between 12 and 45 MPa; Step 4: Cutting and edging Use a cutting machine to cut the glass into appropriate sizes with a cutting accuracy within ±0.1mm, and then use an edge grinder to remove burrs on the edges; Step 5: Tempering After the glass is cleaned and dried, it is placed in a tempering device for preheating at a temperature between 410 and 480°C. Then, the prepared molten salt solution is added and the glass is immersed in the molten salt solution for ion exchange reaction. The reaction time is between 2.5 hours and 8 hours. After the reaction is completed, it is cooled to room temperature.

2. The production process of ultra-thin flexible glass according to claim 1, characterized in that: The tempering device comprises a processing table (1), a first conveyor belt (2) is installed at the upper end of the processing table (1), a preheating device (3) is installed above the first conveyor belt (2), a tempering pool (4) is installed at the rear end of the first conveyor belt (2), a second conveyor belt (5) is installed at the rear end of the tempering pool (4), and air cooling devices (6) are installed at the upper and lower ends of the second conveyor belt (5).

3. The production process of ultra-thin flexible glass according to claim 1, characterized in that: A reaction cavity (401) is provided inside the tempering tank (4), a first servo motor (402) is installed at the side end of the processing table (1), a main gear (403) is installed on the outer side of the output shaft of the first servo motor (402), and both ends of the outer side of the main gear (403) are meshedly connected with driven gears (404).

4. The production process of ultra-thin flexible glass according to claim 3, characterized in that: A stirring rotating rod (405) is installed at the side end of the driven gear (404), and multiple groups of stirring rotors (406) are fixedly connected to the outside of the stirring rotating rod (405). A bottom separation mesh (407) inside the reaction cavity (401) is installed above the stirring rotor (406), and multiple groups of side separation meshes (408) are evenly distributed on the upper end of the bottom separation mesh (407).

5. The production process of ultra-thin flexible glass according to claim 2, characterized in that: A fixed top plate (409) is installed at the side end of the preheating device (3), a guide protection frame (410) is installed at the center of the upper end of the fixed top plate (409), a second servo motor (411) is installed on one side inside the guide protection frame (410), an adjusting screw rod (412) is installed at the output end of the second servo motor (411), and a screw rod slider (413) is transmission-connected to the outer side of the adjusting screw rod (412).

6. The production process of ultra-thin flexible glass according to claim 5, characterized in that: A telescopic cylinder (414) is installed at the lower end of the screw slider (413), a linkage lifting plate (415) is installed at the piston end of the telescopic cylinder (414), a rotating motor (416) is installed at the lower end of the linkage lifting plate (415), and a rotating shaft (417) is installed at the output end of the rotating motor (416).

7. The process for producing ultra-thin flexible glass according to claim 6, characterized in that: A bidirectional cylinder (418) is installed at the lower end of the rotating shaft (417), and two-end clamping vertical plates (419) are installed at the piston end of the bidirectional cylinder (418), and anti-slip clamping plates (420) are installed inside the two-end clamping vertical plates (419).

8. The process for producing ultra-thin flexible glass according to claim 2, characterized in that: The air cooling device (6) comprises an air cooling box (601), a third servo motor (602) is installed at a side end of the air cooling box (601), a main pulley (603) is installed on the outer side of the output shaft of the third servo motor (602), a belt (604) is connected to the outer side of the main pulley (603), a slave pulley (605) is connected to the outer side of the belt (604), a synchronous screw (606) is installed on the outer side of the main pulley (603) and the slave pulley (605), an auxiliary air cooling frame (608) is installed below the second conveyor belt (5), a heat dissipation blowing port (612) is provided at one end of the air cooling box (601) and the auxiliary air cooling frame (608) close to the second conveyor belt (5), and an exhaust port is provided at one end of the air cooling box (601) and the auxiliary air cooling frame (608) away from the second conveyor belt (5).

9. The process for producing ultra-thin flexible glass according to claim 8, characterized in that: The outer side of the synchronous screw (606) is transmission-connected with a synchronous movable block (607), and both sides of the inside of the air cooling box (601) and the auxiliary air cooling frame plate (608) are fixedly connected with guide fixing strips (609).

10. The process for producing ultra-thin flexible glass according to claim 9, characterized in that: A guide slot (610) is provided inside the guide fixing strip (609) and matches with the two ends of the synchronous movable block (607). A cooling fan (611) is installed at the lower end of the synchronous movable block (607), and the outer side of the cooling fan (611) is electrically connected to a controller (613).

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