Glass substrate shaping device
By setting up partitions in the setting furnace to separate the cooling water pipes, forming the water inlet pipe and the return pipe, the problem of low cooling efficiency of the cooling water pipes is solved, and more efficient cooling and uniform hardening of the glass substrate are achieved.
Patent Information
- Application Number
- CN202421987383.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-15
AI Technical Summary
In the prior art, the cooling water pipe of the fixed furnace only has half of the arc facing the glass substrate, resulting in a waste of cooling amount and low cooling efficiency.
Using cooling components, the cooling water pipe is provided with a partition to separate it into a water inlet pipe close to the glass belt channel and a return pipe away from the glass belt channel, and the water pipe arrangement is optimized to improve cooling efficiency.
Make full use of cooling water pipes in a limited space, reduce waste of cooling, improve cooling efficiency, and ensure uniform cooling and hardening of the glass substrate.
Smart Images
Figure CN223118309U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of glass substrate production, and particularly to a glass substrate shaping device. Background Art
[0002] In the production of optoelectronic display glass substrates, such as OLED and LTPS glass substrates, as well as ultra-thin flexible glass substrates with a thickness less than 0.1 mm, they can be produced by the overflow down-draw method. That is, first, the glass batch is put into a kiln for high-temperature melting. After being stirred and clarified through a platinum channel, it flows into a forming furnace body and forms a glass ribbon through overflow down-draw. The shaping furnace is the core equipment for glass substrate shaping. After the batching is heated and liquefied in the kiln and filtered and clarified, it flows into a muffle furnace, a shaping furnace, and an annealing furnace in sequence. Among them, cooling water pipes with a rapid cooling and shaping effect are arranged on both sides of the glass surface of the shaping furnace.
[0003] In the prior art, the cooling water pipes of the shaping furnace are located on both sides of the glass substrate surface inside the shaping furnace, and the position is relatively close to the glass substrate. They rapidly cool the high-temperature glass ribbon flowing down from the overflow bricks, making the glass paste quickly harden to form a viscoelastic glass ribbon, which is convenient for the pulling roller to draw and shape the glass ribbon. The water pipes in the prior art are multiple straight pipes, and the method of using a large pipe to sleeve a small pipe is adopted, with the small pipe for water inlet and the large pipe for water outlet. In practice, only half of the circular arc surface of the water pipe faces the glass substrate, resulting in waste of the cooling capacity. Utility Model Content
[0004] One technical problem to be solved by the present disclosure is to reduce the waste of the cooling capacity of the cooling water pipes in the shaping furnace.
[0005] To solve the above technical problem, an embodiment of the present disclosure provides a glass substrate shaping device, which includes:
[0006] A muffle furnace;
[0007] An overflow brick, which is arranged in the muffle furnace;
[0008] A shaping furnace, which is arranged under the muffle furnace and communicated with the muffle furnace, and a glass ribbon channel is arranged in the shaping furnace; and
[0009] A cooling assembly, which includes a cooling water pipe. The cooling water pipe is arranged on the side of the glass ribbon channel, and a partition is arranged in the cooling water pipe. The partition divides the cooling water pipe into a water inlet pipe close to the glass ribbon channel and a water return pipe far from the glass ribbon channel.
[0010] In some embodiments, the cooling assembly includes a plurality of cooling water pipes. On each side of the glass ribbon channel, the cooling water pipes are arranged at intervals in the vertical direction.
[0011] In some embodiments, the cooling assembly includes a main water pipe and a plurality of branch water pipes connected to the main water pipe, and each branch water pipe communicates with a cooling water pipe.
[0012] In some embodiments, at the first end of the cooling water pipe, the branch water pipe communicates with the water inlet pipe, and at the second end of the cooling water pipe, the water inlet pipe and the water return pipe communicate with each other.
[0013] In some embodiments, a heating element is provided on the branch water pipe, and the heating element includes a main body pipe portion and a heating wire disposed in the main body pipe portion.
[0014] In some embodiments, a regulating valve is provided on the branch water pipe.
[0015] In some embodiments, a first temperature measuring element is provided at the upper part and a second temperature measuring element is provided at the lower part in the shaping furnace.
[0016] In some embodiments, a pulling machine is provided at the upper part in the shaping furnace.
[0017] In some embodiments, it further includes an annealing furnace communicating with the lower end of the shaping furnace, and a traction roller is provided in the annealing furnace.
[0018] In some embodiments, a baffle is provided at the upper end of the annealing furnace.
[0019] Through the above technical solution, the structure of the cooling water pipe allows the water inlet pipe and the water return pipe to be arranged in a limited space, making more full use of the space, ensuring the cooling efficiency, and reducing or avoiding the waste of the cooling capacity. Description of the Drawings
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 It is a schematic structural diagram of a glass substrate shaping device disclosed in an embodiment of the present disclosure;
[0022] Figure 2 It is a schematic structural diagram of a heating assembly disclosed in an embodiment of the present disclosure;
[0023] Figure 3 It is a schematic partial structural diagram of a glass substrate shaping device disclosed in an embodiment of the present disclosure;
[0024] Figure 4 It is a schematic structural diagram of a cooling water pipe disclosed in an embodiment of the present disclosure.
[0025] Description of the reference numerals in the drawings:
[0026] 1. Cooling assembly; 11. Main water pipe; 12. Water storage tank; 13. Main body pipe section; 14. Heating wire; 15. Branch water pipe; 16. Regulating valve; 17. Cooling water pipe; 21. Control element; 22. First temperature measuring element; 23. Second temperature measuring element; 3. Muffle furnace; 31. Overflow brick; 4. Glass liquid; 5. Shaping furnace; 51. Edge roller; 6. Annealing furnace; 61. Traction roller; 62. Baffle; 171. Water inlet pipe; 172. Water return pipe; 173. Partition board. Detailed implementation manners
[0027] The following further describes the implementation manners of the present disclosure in detail with reference to the drawings and embodiments. The detailed descriptions and drawings of the following embodiments are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but including all technical solutions falling within the scope of the claims.
[0028] These embodiments are provided by the present disclosure to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of the components and steps, the components of the materials, the numerical expressions and values described in these embodiments should be construed as merely exemplary, rather than as limitations.
[0029] It should be noted that in the description of the present disclosure, unless otherwise stated, the meaning of "a plurality" is greater than or equal to two; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0030] In addition, the "first", "second" and similar terms used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. The terms "including" or "comprising" and the like mean that the elements before this word are covered by the elements listed after this word, and do not exclude the possibility of also covering other elements.
[0031] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 direct connection, or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances. When it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
[0032] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.
[0033] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification.
[0034] Referring to Figures 1-4 shown, the present solution provides a glass substrate shaping device, which includes:
[0035] A muffle furnace 3;
[0036] An overflow brick 31, which is arranged in the muffle furnace 3;
[0037] A shaping furnace 5, which is arranged below the muffle furnace 3 and is connected to the muffle furnace 3, and a glass ribbon channel is arranged in the shaping furnace 5; and
[0038] A cooling assembly 1, which includes a cooling water pipe 17. The cooling water pipe 17 is arranged on the side of the glass ribbon channel, and a partition 173 is arranged in the cooling water pipe 17. The partition 173 divides the cooling water pipe 17 into a water inlet pipe 171 close to the glass ribbon channel and a water return pipe 172 far from the glass ribbon channel.
[0039] Referring to Figure 1 shown, an overflow brick 31 is arranged in the muffle furnace 3, and the glass liquid 4 flows down from the lower tip of the overflow brick 31 to form a thin sheet and enters the shaping furnace 5.
[0040] The thin-sheet glass liquid 4 moves downward in the glass ribbon channel in the shaping furnace 5, and gradually cools during the movement to become a glass substrate.
[0041] The glass ribbon passage is the space in the shaping furnace 5 that allows the glass to pass through. The shape of the glass melt 4 is sheet-like, and the shape of the glass ribbon passage is the corresponding shape.
[0042] The side part of the glass ribbon passage refers to the side part in the thickness direction of the glass melt 4. The cooling water pipe 17 is arranged on the side part of the glass ribbon passage, that is, on the side of the glass melt 4, and can absorb the heat released by the glass melt 4, so that the glass melt 4 is cooled to a suitable temperature and gradually hardens to form a glass substrate.
[0043] Among them, as Figure 1 shown, the cooling water pipe 17 can be arranged parallel to the glass ribbon passage (i.e., the sheet-like glass melt 4).
[0044] Among them, as Figure 4 shown, a partition 173 is arranged inside the cooling water pipe 17, which divides the cooling water pipe 17 into two parts, namely the water inlet pipe 171 and the water return pipe 172. And the water inlet pipe 171 is located on the side of the cooling water pipe 17 close to the glass ribbon passage, and the water return pipe 172 is located on the side of the cooling water pipe 17 far from the glass ribbon passage. The cross-section of the cooling water pipe 17 is circular, and the cross-sections of the water inlet pipe 171 and the water return pipe 172 can be semi-circular respectively.
[0045] The water inlet pipe 171 is the main part for the cooling water pipe 17 to absorb the heat of the glass melt 4. It is the part of the cooling water pipe 17 facing the glass melt 4 and has a higher heat absorption efficiency; the water return pipe 172 is the part facing away from the glass melt 4 and has a relatively lower heat absorption efficiency.
[0046] In other words, there are parts of the entire outer peripheral surface of the cooling water pipe 17 facing the glass melt 4 and parts facing away from the glass 4. A partition is arranged in the cooling water pipe 17 to separate these two parts to form the water inlet pipe 171 and the water return pipe 172, so that the water inlet pipe 171 absorbs heat with higher efficiency.
[0047] It can be seen that the structure of the cooling water pipe 17 can arrange the water inlet pipe and the water return pipe in a limited space, make more full use of the space, and ensure the cooling efficiency.
[0048] Among them, in some embodiments, the cooling assembly 1 includes a plurality of cooling water pipes 17. On each side of the glass ribbon passage, the cooling water pipes 17 are arranged at intervals in the vertical direction. The cooling water pipes 17 are respectively arranged on both sides of the glass ribbon passage, and the cooling water pipes 17 are arranged parallel to the glass ribbon passage and are arranged at intervals in the vertical direction, so as to form a suitable temperature gradient along the vertical direction of the glass ribbon passage.
[0049] Among them, in some embodiments, the cooling assembly 1 includes a main water pipe 11 and a plurality of branch water pipes 15 connected to the main water pipe 11, and each branch water pipe 15 communicates with the cooling water pipe 17. AsFigure 2 As shown, the main water pipe 11 communicates with a plurality of branch water pipes 15 to separately deliver cooling water to a plurality of cooling water pipes 17. In particular, a water storage tank 12 is provided between the main water pipe 11 and the branch water pipes 15, which facilitates distributing the water in the main water pipe 11 into the plurality of branch water pipes 15.
[0050] Among them, in some embodiments, at the first end of the cooling water pipe 17, the branch water pipe 15 communicates with the water inlet pipe 171. At the second end of the cooling water pipe 17, the water inlet pipe 171 and the water return pipe 172 communicate with each other. The second end of the cooling water pipe 17 can be closed by an end cap, and the partition 173 is spaced from the end cap, so that the water inlet pipe 171 and the water return pipe 172 communicate at the second end of the cooling water pipe. The branch water pipe 15 communicates with the water inlet pipe 171 at the first end of the cooling water pipe 17 to input cooler cooling water into it. The cooling water enters the water return pipe 172 at the second end of the cooling water pipe 17 and is discharged through the water return pipe 172 at the second end of the cooling water pipe. The water return pipe 172 can be connected to other pipelines to discharge the warmer cooling water.
[0051] In addition, in some embodiments, a heating element is provided on the branch water pipe 15. The heating element includes a main body pipe portion 13 and a heating wire 14 disposed in the main body pipe portion 13. The heating wire 14 can be a resistive heating wire, which can include a resistance wire and an insulating layer disposed outside the resistance wire to avoid electric leakage. The main body pipe portion 13 is connected in the branch water pipe 15. When the water in the branch water pipe 15 passes through the main body pipe portion 13, it can be heated by the heating wire 14 to reach the target temperature. The heating wire 14 can be formed in a spiral shape.
[0052] For the cooling water supplied to the glass substrate shaping device, in addition to supplying cooling water to the shaping furnace 5, it also water-cools the outer shell of the muffle furnace 3. Since the muffle furnace 3 has a higher temperature, the cooling water it requires has a lower water temperature, that is, 10 - 12 °C, which restricts the supplied cooling water to 10 - 12 °C. In order to ensure that the glass liquid 4 gradually cools and hardens in the shaping furnace 5, the cooling water temperature required in the shaping furnace 5 is 20 - 30 °C. Therefore, it is necessary to heat the cooling water to the target temperature through the heating element.
[0053] In addition, in some embodiments, a regulating valve 16 is provided on the branch water pipe 15. The regulating valve 16 can control the opening and closing of the branch water pipe 15, and the opening degree of the regulating valve 16 can be adjusted to regulate the flow rate of the branch water pipe 15. By controlling the flow rate of the cooling water, a suitable temperature gradient can be formed in the glass belt channel.
[0054] Among them, in some embodiments, a first temperature measuring element 22 is provided in the upper part of the shaping furnace 5, and a second temperature measuring element 23 is provided in the lower part. The first temperature measuring element 22 is located at a relatively upper position in the shaping furnace 5, and the second temperature measuring element 23 is located at a relatively lower position in the shaping furnace 5 to respectively monitor the temperatures of the upper and lower parts. The first temperature measuring element 22 and the second temperature measuring element 23 can be thermocouples, temperature sensors, etc.
[0055] In addition, in some embodiments, a pulling machine 51 is provided in the upper part of the shaping furnace 5. The pulling machine 51 is arranged in the shaping furnace 5, and it can adjust the thickness and width of the glass substrate.
[0056] In addition, in some embodiments, the glass substrate shaping device further includes an annealing furnace 6 connected to the lower end of the shaping furnace 5. A traction roller 61 is provided in the annealing furnace 6. The annealing furnace 6 can perform annealing treatment on the glass substrate, and the traction roller 61 can drive the glass substrate to move downward.
[0057] In addition, in some embodiments, a baffle 62 is provided at the upper end of the annealing furnace 6. Two baffles 62 can be provided inside the upper end of the annealing furnace 6, and a passage allowing the glass to pass through is formed between the two baffles 62. The baffle 62 can separate the annealing furnace 6 and the shaping furnace 5 to a certain extent.
[0058] In addition, in some embodiments, a control element is further included. A temperature sensor can be integrated at the regulating valve 16. The control element is communicatively connected to the regulating valve 16, can measure the temperature of the cooling water in the branch water pipe 15, and control the opening, closing, and opening degree of the regulating valve 16; the control element is communicatively connected to the first temperature measuring element 22 and the second temperature measuring element 23, and is communicatively connected to the heating element. The control element can control the regulating valve 16 and the heating element according to the temperature information measured by the first temperature measuring element 22, the second temperature measuring element 23, and the regulating valve 16, so that the branch water pipe 15 provides cooling water with a suitable flow rate and a suitable temperature to the cooling water pipe 17, so as to reach the target temperature at the first temperature measuring element 22 and the second temperature measuring element 23.
[0059] When the glass ribbon is abnormally torn while being pulled down by the traction roller 61, the glass ribbon blocked on the baffle 62 requires a greater cooling amount and becomes brittle from a viscous state, which is convenient for on-site personnel to quickly dredge it with tools. The first temperature measuring element 22 and the second temperature measuring element 23 detect that the temperature of the glass ribbon in the furnace far deviates from the reasonable value, that is, the glass ribbon has lost its shape. The control element 21 determines that the glass ribbon has broken and cannot continue production. The heating element controlled by the control element 21 is turned off, and the cooling water reaches the lowest water temperature. The regulating valve 16 controlled by the control element 21 has the largest opening degree, and the water flow rate of the cooling water pipe 17 reaches the maximum to achieve the maximum cooling amount, which is beneficial to the rapid hardening and dredging of the glass ribbon. After the dredging is completed, the control element 21 immediately restores to the original set value of the water temperature and water flow rate to accurately restore the process state.
[0060] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.
[0061] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or partial technical features can be equivalently replaced without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way.
Claims
1. A glass substrate shaping device, characterized in that, Comprising: Muffle furnace (3); Overflow brick (31), the overflow brick (31) is arranged in the muffle furnace (3); Sizing furnace (5), the sizing furnace (5) is arranged below the muffle furnace (3) and communicated with the muffle furnace (3), and a glass ribbon channel is arranged in the sizing furnace (5); and Cooling assembly (1), the cooling assembly (1) includes a cooling water pipe (17), the cooling water pipe (17) is arranged on the side of the glass ribbon channel, a partition (173) is arranged in the cooling water pipe (17), and the partition (173) divides the cooling water pipe (17) into a water inlet pipe (171) close to the glass ribbon channel and a water return pipe (172) far from the glass ribbon channel.
2. The glass substrate shaping device according to claim 1, wherein The cooling assembly (1) includes a plurality of cooling water pipes (17), and on each side of the glass ribbon channel, the cooling water pipes (17) are arranged at intervals in the vertical direction.
3. The glass substrate shaping device according to claim 2, wherein The cooling assembly (1) includes a main water pipe (11) and a plurality of branch water pipes (15) connected to the main water pipe (11), and each branch water pipe (15) is communicated with the cooling water pipe (17).
4. The glass substrate shaping device according to claim 3, wherein At the first end of the cooling water pipe (17), the branch water pipe (15) is communicated with the water inlet pipe (171), and at the second end of the cooling water pipe (17), the water inlet pipe (171) and the water return pipe (172) are communicated with each other.
5. The glass substrate shaping device according to claim 3, characterized in that, A heating element is arranged on the branch water pipe (15), and the heating element includes a main body pipe part (13) and a heating wire (14) arranged in the main body pipe part (13).
6. The glass substrate shaping device according to claim 3, characterized in that, A regulating valve (16) is arranged on the branch water pipe (15).
7. The glass substrate shaping device according to claim 1, wherein A first temperature measuring element (22) is arranged in the upper part and a second temperature measuring element (23) is arranged in the lower part in the sizing furnace (5).
8. The glass substrate shaping device according to claim 1, wherein, A top roll (51) is arranged in the upper part in the sizing furnace (5).
9. The glass substrate shaping device according to claim 1, wherein, It further includes an annealing furnace (6) communicated with the lower end of the sizing furnace (5), and a traction roll (61) is arranged in the annealing furnace (6).
10. The glass substrate shaping device according to claim 9, characterized in that, A baffle (62) is arranged at the upper end of the annealing furnace (6).