Glass etching uniform thinning apparatus
By introducing a uniform spraying device and a basket frame into the glass etching equipment, the problem of uneven liquid flow during the glass etching process was solved, achieving uniform reduction of glass thickness and improving product yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU TOMI SHUANG DU OPTOELECTRONICS CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-04
AI Technical Summary
In the production of flexible ultrathin glass with unequal thickness, uneven flow of acid in the tank during the immersion etching process leads to uneven glass thickness, affecting the product yield.
The system employs a spraying device and a uniform spraying device, including a mesh plate and a basket frame, to achieve uniform etching by spraying liquid to form a uniform flow that covers the glass surface inside the tank.
It improved the uniformity of liquid flow, increased the glass thickness yield by 20%, and achieved better etching results.
Smart Images
Figure CN224590861U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glass production technology, and more specifically, to a glass etching uniform thinning device. Background Technology
[0002] In the production of flexible ultrathin glass with unequal thickness, an immersion etching process is required to reduce the thickness of the glass. During the immersion etching process, the acid in the tank needs to be in a flowing state; otherwise, the glass will eventually have thickness issues.
[0003] In existing technologies, acid flow is generally used to achieve the above effect. However, when products are put into the tank in large quantities, the liquid flow rate varies greatly at different points, which leads to differences in the thinning rate and affects the thickness and yield of the final product. Utility Model Content
[0004] This invention overcomes the shortcomings of existing technologies in achieving uniform thickness due to uneven flow rate during ultrathin glass etching, and provides a glass etching uniform thinning device in the hope of solving the above-mentioned problems.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A glass etching uniform thinning device includes a tank, a spraying device, and a spraying uniform device.
[0007] The spraying device and the spray uniform device are installed in the tank, and the spraying direction of the spraying device is towards the spray uniform device.
[0008] After being sprayed from the spraying device, the spray liquid passes through the spray uniform device to form a more uniform liquid and reaches the glass surface set inside the tank.
[0009] Since existing spraying devices struggle to achieve uniform spraying, a spray homogenizing device is installed at the front of the spraying direction to cover the entire spraying path. After passing through the spray homogenizing device, the sprayed liquid forms a uniform liquid, thus achieving a uniform etching effect.
[0010] A further technical solution is that there are several spraying devices and several spray uniform devices, with the spray uniform devices covering the spraying direction of all spraying devices.
[0011] A further technical solution is that the spray uniform device includes at least one screen plate;
[0012] The mesh plate is evenly provided with mesh holes.
[0013] A further technical solution is that the mesh panel includes a frame and a mesh body;
[0014] The frame is installed around the perimeter of the net body, which has evenly distributed mesh holes, and the net body covers all spraying directions.
[0015] A further technical solution is that the mesh openings on the mesh body are square or circular.
[0016] A further technical solution is that, when the mesh is square, the side length of the mesh is 0.5–2 mm, and the mesh spacing is 0.25–0.5 mm;
[0017] When the mesh is circular, the mesh diameter is 0.5–2 mm and the mesh spacing is 0.5–2 mm.
[0018] The larger the mesh size, the better the liquid can pass through; the smaller the mesh size, the more evenly the liquid is dispersed.
[0019] A further technical solution is that the uniform spraying device also includes a basket frame;
[0020] The basket frame has at least one slot inside that corresponds to the size of the net panel, and the net panel is inserted into the slot.
[0021] Since the number of slots and the spacing between them can be adjusted according to actual usage needs, the uniformity of the spray can be adjusted by setting the screen type, number of screens, and screen spacing. If using multiple screens, a spacing of ≥5cm between the screens is recommended. Furthermore, the number of screens can be adjusted based on the flow rate circulating at the bottom of the tank.
[0022] A further technical solution is that the outer frame and mesh of the basket are made of acid-resistant materials.
[0023] A further technical solution is that the spraying device is located at the bottom of the tank;
[0024] The basket frame with the mesh panel installed is positioned above the sprinkler system;
[0025] The etched mother basket is set on the upper part of the basket's outer frame.
[0026] A further technical solution is that the distance between the outer frame of the basket and the spray nozzle of the spray device is 5-30cm;
[0027] The distance between the outer frame of the basket and the bottom of the etched mother basket inner lining plate is 10-40cm;
[0028] The outer frame of the basket is placed in the middle of the tank, with the edge of the outer frame 5-30cm away from the inner wall of the tank.
[0029] Compared with the prior art, this utility model has at least the following beneficial effects: By adding a spray uniformity device, this utility model improves the spray uniformity effect, and the uniformity of liquid flow after passing through the spray uniformity device is significantly improved, increasing the thickness yield by 20% compared to before the improvement. Furthermore, this application adds a basket frame, thereby allowing the selection of specific mesh plates according to the uniformity effect, and multiple mesh plates can be stacked to change the uniformity effect, making it adaptable to production needs. The glass etching uniform thinning equipment provided by this application has the advantages of good spray uniformity effect, adjustability, and good etching effect. Attached Figure Description
[0030] Figure 1 This is a side sectional view of the overall structure of this utility model;
[0031] Figure 2 This is a schematic diagram of the stencil structure;
[0032] Figure 3 This is a side sectional view of the basketball's outer frame structure.
[0033] In the figure, 1-tank, 2-spraying device, 3-spraying uniform device, 31-mesh plate, 311-frame, 312-mesh body, 32-basket outer frame. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0035] A glass etching uniform thinning device, see [link to relevant documentation] Figure 1 It includes a tank 1, a spraying device 2, and a spraying uniform device 3;
[0036] It is understandable that the number of spray devices 2 is related to the size of the tank 1 and the required liquid flow rate. In this embodiment, the number of spray devices 2 is more than one, and they are uniformly distributed in a mesh pattern, which can further improve the uniformity of the sprayed liquid.
[0037] The number of spray uniform devices 3 can also be set according to the actual situation, as long as they can cover the spray direction.
[0038] The spraying device 2 and the spraying uniform device 3 are installed in the tank 1. The spraying direction of the spraying device 2 is towards the spraying uniform device 3, and the spraying uniform device 3 covers all spraying directions.
[0039] After being sprayed from the spraying device 2, the spray liquid passes through the spray uniform device 3 to form a more uniform liquid and reaches the glass surface set inside the tank 1.
[0040] The uniform spraying device 3 can be any one of the mesh plate 31 and the sieve. In this embodiment, the uniform spraying device 3 includes at least one mesh plate 31 and a basket frame 32.
[0041] In a preferred embodiment, see Figure 2 The mesh panel 31 includes a frame 311 and a mesh body 312;
[0042] The frame 311 is installed around the mesh body 312, and the mesh body 312 is evenly provided with mesh holes, covering all spraying directions.
[0043] The frame 311 mainly serves to facilitate installation, while the mesh 312 serves to evenly spray the liquid and needs to cover the spray direction.
[0044] The mesh body 312 is uniformly provided with mesh holes. For example, the mesh holes provided on the mesh body 312 are square or circular.
[0045] When the mesh is square, the side length of the mesh is 0.5–2 mm, and the mesh spacing is 0.25–0.5 mm;
[0046] When the mesh is circular, the mesh diameter is 0.5–2 mm and the mesh spacing is 0.5–2 mm.
[0047] Experimental tests have shown that the above shape, aperture, and spacing can achieve a good dispersion effect.
[0048] See Figure 3 The basket frame 32 has at least one slot inside that corresponds to the size of the mesh plate 31, and the mesh plate 31 is inserted into the slot.
[0049] In this embodiment, there are five slots. In actual use, the mesh plate 31 can be inserted into the slots at different positions to adjust the distance. Multiple mesh plates 31 can also be used in combination. The mesh plates 31 can be inserted at different positions to adjust the spacing between them, thereby adjusting the flow state of the liquid in the tank 1.
[0050] In this embodiment, the basket frame 32 and the mesh panel 31 are made of acid-resistant material.
[0051] For example, the outer frame 32 of the basket is made of materials such as Hastelloy or PVC, the frame 311 is made of materials such as polypropylene (PP), polyvinyl chloride (PVC), carbon fiber, etc., and the net body 312 is made of PP material.
[0052] It should be understood that the above-mentioned acid-resistant materials are only the preferred materials based on the material properties of individual components. Other acid-resistant materials can also be used to make the basket frame 32 and net 312.
[0053] In this embodiment, the spraying device 2 is disposed at the bottom of the tank 1;
[0054] The basket frame 32, on which the mesh plate 31 is installed, is positioned above the spray device 2;
[0055] The etched mother basket is set on the upper part of the basket outer frame 32.
[0056] The distance between the outer frame 32 of the basket and the nozzle of the spray device 2 is 5-30cm;
[0057] The distance between the outer frame 32 of the basket and the bottom of the etched mother basket inner lining plate is 10-40cm;
[0058] The outer frame 32 of the basket is placed in the middle of the tank 1, and the edge of the outer frame 32 is 5-30cm away from the inner wall of the tank 1.
[0059] It is understandable that as long as the basket frame 32 with the mesh plate 31 is positioned in the spray direction of the spray device 2, the effect of uniform liquid spraying can be achieved. Therefore, the spray device 2 can also be positioned at the top of the tank 1, with the basket frame 32 with the mesh plate 31 installed and the etched mother basket arranged sequentially at the bottom.
[0060] When using this equipment, the glass to be etched and thinned is placed above the tank 1, and the acid solution is sprayed out from the spray device 2 at the bottom. Since the spray device 2 itself adopts a mesh-like uniform distribution, it achieves the first uniform effect.
[0061] After the liquid has been homogenized for the first time, it reaches the outer frame 32 of the basket where the mesh plate 31 is installed. One to three layers of mesh plates 31 can be inserted into the outer frame 32 of the basket. If multiple mesh plates 31 are used, the spacing between the mesh plates 31 should be ≥5cm. The number of mesh plates 31 can be adjusted according to the flow rate of the bottom circulation.
[0062] After passing through the mesh plate 31, the liquid forms uniform droplets and is sprayed onto the glass, achieving the effects of uniform spraying and uniform thinning.
[0063] Compared with the previous liquid flow uniformity: the addition of auxiliary basket significantly improved the liquid flow uniformity, and the thickness yield increased by 20% compared with the previous result.
[0064] The following table shows the test results:
[0065]
[0066] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.
Claims
1. A glass etching uniform thinning device, characterized in that, Includes the tank, spraying device, and spraying uniform device; The spraying device and the spray uniform device are installed in the tank, and the spraying direction of the spraying device is towards the spray uniform device. After being sprayed from the spraying device, the spray liquid passes through the spray uniform device to form a more uniform liquid and reaches the glass surface set inside the tank.
2. The glass etching uniform thinning equipment as described in claim 1, characterized in that, There are several spraying devices and several spray uniform devices, with the spray uniform devices covering the spraying direction of all spraying devices.
3. The glass etching uniform thinning equipment as described in claim 1, characterized in that, The uniform spraying device includes at least one screen plate; The mesh plate is evenly provided with mesh holes.
4. The glass etching uniform thinning equipment as described in claim 3, characterized in that, The mesh panel includes a frame and a mesh body; The frame is installed around the perimeter of the net body, which has evenly distributed mesh holes, and the net body covers all spraying directions.
5. The glass etching uniform thinning equipment as described in claim 4, characterized in that, The mesh on the mesh body is square or circular.
6. The glass etching uniform thinning equipment as described in claim 5, characterized in that, When the mesh is square, the side length of the mesh is 0.5–2 mm, and the mesh spacing is 0.25–0.5 mm; When the mesh is circular, the mesh diameter is 0.5–2 mm and the mesh spacing is 0.5–2 mm.
7. The glass etching uniform thinning apparatus as described in any one of claims 3-6, characterized in that, The uniform spraying device also includes a basket frame; The basket frame has at least one slot inside that corresponds to the size of the net panel, and the net panel is inserted into the slot.
8. The glass etching uniform thinning equipment as described in claim 7, characterized in that, The basket's outer frame and mesh are made of acid-resistant materials.
9. The glass etching uniform thinning equipment as described in claim 7, characterized in that, The spraying device is located at the bottom of the tank; The basket frame with the mesh panel installed is positioned above the sprinkler system; The etched mother basket is set on the upper part of the basket's outer frame.
10. The glass etching uniform thinning equipment as described in claim 9, characterized in that, The distance between the outer frame of the basket and the spray nozzle of the spray device is 5-30cm; The distance between the outer frame of the basket and the bottom of the etched mother basket inner lining plate is 10-40cm; The outer frame of the basket is placed in the middle of the tank, with the edge of the outer frame 5-30cm away from the inner wall of the tank.