Glass forming equipment
By combining heating components and temperature control mechanisms in the molding equipment, the temperature field is adjusted without affecting the molten glass form, the problems of uneven stress distribution and consistency in thickness during the molding of the carrier glass are solved, and the quality of the glass is improved.
Patent Information
- Application Number
- CN202311838606.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-07-11
AI Technical Summary
During the molding of OLED carrier glass, the stress distribution is uneven, the thickness consistency is poor, and the light and dark texture defects are sometimes absent. The prior art improves by changing the temperature field in the molding equipment, but it is easy to affect the form of the molten glass, resulting in a change in the stress state.
The heating assembly and temperature control mechanism in the molding equipment are used to heat the cavity through the heating assembly. The temperature control mechanism uses the suction pipe and vacuum generation assembly to adjust the temperature field to avoid the impact on the molten glass form, including setting up a drainage member and annealing furnace to control the cooling rate.
While adjusting the temperature field, the change in the form of molten glass is avoided, the quality of the carrier glass is improved, and the stress distribution and thickness are ensured uniform.
Smart Images
Figure CN120289067A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of carrier glass production, and particularly relates to a glass forming device. Background Art
[0002] During the forming process of OLED carrier glass, uniform stress distribution and consistent thickness of the product are necessary guarantees for quality. However, affected by factors such as the forming environment and the physical and chemical properties of the glass, quality problems such as uneven stress distribution, poor thickness consistency, and intermittent bright and dark stripe defects are likely to occur during the forming process.
[0003] In the prior art, most improvements are made by changing the temperature field inside the forming device, such as blowing hot air into the forming device. However, although blowing hot air can change the temperature field, it is likely to affect the shape of the unformed molten glass, resulting in a change in the stress state and defects in the carrier glass. Summary of the Invention
[0004] The purpose of the present invention is to provide a glass forming device that can adjust the temperature field inside the forming container while avoiding affecting the shape of the molten glass, avoiding changes in the stress state, and improving the quality of the carrier glass.
[0005] To achieve this purpose, the present invention adopts the following technical solutions:
[0006] A glass forming device includes:
[0007] A forming container, which includes two side plates and a cavity between the two side plates. An opening is formed at the bottom ends of the two side plates;
[0008] A heating component configured to heat the cavity;
[0009] A drainage member disposed in the cavity and above the opening;
[0010] A temperature control mechanism, with at least one of the side plates provided with the temperature control mechanism. The temperature control mechanism includes an air suction pipe and a vacuum generating component. One end of the air suction pipe is located in the cavity, and the other end of the air suction pipe is connected to the vacuum generating component.
[0011] As an alternative to the above glass forming device, the vacuum generating component includes a vacuum generating pipe and a blowing member. The air suction pipe is connected to the side wall of the vacuum generating pipe and is in communication with the vacuum generating pipe. The blowing member is connected to one end of the vacuum generating pipe.
[0012] As an alternative to the glass forming device described above, the vacuum generating tube includes a small-diameter section and large-diameter sections respectively disposed at both ends of the small-diameter section. The blowing member is connected to one of the large-diameter sections, and the suction pipe is connected to the small-diameter section.
[0013] As an alternative to the glass forming device described above, the temperature control mechanism further includes a seal. The side plate is provided with an installation opening, the suction pipe passes through the installation opening, and the seal is disposed between the suction pipe and the side plate to seal the installation opening.
[0014] As an alternative to the glass forming device described above, the temperature control mechanism includes a plurality of the suction pipes, and the plurality of suction pipes are arranged at intervals in the horizontal direction; and / or
[0015] Both of the two side plates are provided with the temperature control mechanism.
[0016] As an alternative to the glass forming device described above, the end of the suction pipe located in the cavity is higher than the lowest point of the drainage member and is spaced apart from the drainage member.
[0017] As an alternative to the glass forming device described above, the drainage member includes two drainage walls disposed opposite to each other, and the distance between the two drainage walls gradually decreases in the direction from top to bottom.
[0018] As an alternative to the glass forming device described above, an overflow groove is formed on the top surface of the drainage member, and a feed port is formed at the top of the forming container, and the feed port is located above the overflow groove.
[0019] As an alternative to the glass forming device described above, a heat preservation table is convexly provided on the inner wall of the side plate, the heat preservation table is located below the temperature control mechanism, the distance between the heat preservation tables of the two side plates gradually decreases in the direction from top to bottom, and an opening is formed between the two heat preservation tables.
[0020] As an alternative to the glass forming device described above, the forming device further includes an annealing furnace, and the annealing furnace is disposed below the forming container and communicated with the opening.
[0021] Advantages of the present invention:
[0022] The present invention provides a glass forming device. In this forming device, molten glass enters the cavity and falls onto the drainage member, and then continues to flow downward along the outer surface of the drainage member. When the molten glass flows to the lowest point of the drainage member and continues to flow downward, it can flow out of the cavity through the opening and cool to form. During the process of the molten glass flowing inside the cavity, the heating assembly can heat the cavity to ensure that the molten glass will not solidify inside the cavity, and by sucking air out through the suction pipe of the temperature control mechanism, the temperature field inside the cavity can be effectively adjusted without affecting the shape of the molten glass.
[0023] This forming device can adjust the temperature field inside the forming container while avoiding affecting the shape of the molten glass, thus avoiding the change of the stress state and improving the quality of the carrier plate glass. Brief Description of the Drawings
[0024] Figure 1 is a schematic structural diagram of the glass forming device provided by the present invention;
[0025] Figure 2 is Figure 1 a sectional view taken along plane A in
[0026] Figure 3 is a side view of the glass forming device provided by the present invention;
[0027] Figure 4 is Figure 3 a sectional view taken along line B-B in
[0028] Figure 5 is Figure 4 a partial enlarged view at C in
[0029] In the figure:
[0030] 100, carrier plate glass;
[0031] 1, forming container; 2, drainage member; 3, temperature control mechanism; 4, annealing furnace;
[0032] 11, side plate; 12, cavity; 13, opening; 14, feed port; 21, drainage wall; 22, overflow tank; 31, suction pipe; 32, vacuum generating pipe; 33, seal;
[0033] 111, heat preservation table; 321, small diameter section; 322, large diameter section. Detailed Embodiments
[0034] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.
[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.
[0036] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0037] Unless otherwise clearly defined and limited, the fact that the first feature is "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but in contact through other features between them. Moreover, the fact that the first feature is "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "under", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.
[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments.
[0039] During the forming process of OLED carrier glass, it is necessary to ensure uniform stress distribution and consistent thickness of the product. However, due to factors such as the forming environment and the physical and chemical properties of the glass, problems such as uneven stress distribution, poor thickness consistency, and occasional bright and dark stripe defects are likely to occur during the forming process.
[0040] In the prior art, most improvements are made by changing the temperature field inside the forming device. For example, hot air is blown into the forming device. However, although blowing in hot air can change the temperature field, it is likely to affect the shape of the unformed molten glass, resulting in a change in the stress state and causing defects in the carrier glass.
[0041] To solve the above problems, the present embodiment provides a forming device for glass, as Figures 1 to 4 shown. The forming device includes a forming container 1, a heating component, a drainage member 2, and a temperature control mechanism 3. The forming container 1 includes two side plates 11 and a cavity 12 between the two side plates 11. An opening 13 is formed at the bottom ends of the two side plates 11. The heating component is configured to heat the inside of the cavity 12. The drainage member 2 is disposed in the cavity 12 and above the opening 13. At least one side plate 11 is provided with a temperature control mechanism 3. The temperature control mechanism 3 includes an air suction pipe 31 and a vacuum generating component. One end of the air suction pipe 31 is located in the cavity 12, and the other end of the air suction pipe 31 is connected to the vacuum generating component.
[0042] In this forming device, after the molten glass enters the cavity 12, it falls onto the drainage member 2 and continues to flow downward along the outer surface of the drainage member 2. When the molten glass flows to the lowest point of the drainage member 2, it can flow out of the cavity 12 through the opening 13 and be cooled and formed into a carrier glass 100, and then can be cut according to requirements for use. During the process of the molten glass flowing inside the cavity 12, the heating component can heat the cavity 12 to ensure that the molten glass will not solidify in the cavity 12, and the vacuum generating component can suck air out through the air suction pipe 31, thereby effectively regulating the temperature field inside the cavity 12. Since the gas inside the cavity 12 enters the air suction pipe 31 from all directions during the process of sucking air out, it will not affect the shape of the molten glass.
[0043] This forming device can avoid affecting the shape of the molten glass while adjusting the temperature field inside the forming container 1, thereby avoiding the change in the stress state and improving the quality of the carrier glass 100.
[0044] In the present embodiment, the vacuum generating component includes a vacuum generating pipe 32 and a blowing member. The air suction pipe 31 is connected to the side wall of the vacuum generating pipe 32 and is in communication with the vacuum generating pipe 32. The blowing member is connected to one end of the vacuum generating pipe 32.
[0045] When the blowing member blows air into the vacuum generating tube 32, the gas flow rate inside the vacuum generating tube 32 is fast, causing the air pressure inside the vacuum generating tube 32 to decrease, forming a negative pressure. As a result, the gas in the cavity 12 enters the vacuum generating tube 32 through the suction pipe 31 and flows to the outside along with the gas in the vacuum generating tube 32, thereby controlling the temperature field inside the cavity 12. It can be understood that the gas flow rate inside the vacuum generating tube 32 can be changed by changing the power of the blowing member, so as to change the suction capacity of the suction pipe 31 and flexibly adjust the temperature field inside the cavity 12.
[0046] As Figure 4 and Figure 5 shown, the vacuum generating tube 32 includes a small-diameter section 321 and large-diameter sections 322 respectively provided at both ends of the small-diameter section 321. The blowing member is connected to one of the large-diameter sections 322, and the suction pipe 31 is connected to the small-diameter section 321. That is to say, the vacuum generating tube 32 is a Venturi tube. When the blowing member blows air into the vacuum generating tube 32, the gas flow rate in the small-diameter section 321 increases, which also increases the suction force of the vacuum generating tube 32 on the suction pipe 31, so as to be able to more sensitively adjust the temperature field inside the cavity 12.
[0047] Since the suction pipe 31 passes through the side plate 11 and enters the cavity 12, in order to reduce the influence on the temperature field inside the cavity 12, the temperature control mechanism 3 further includes a sealing member 33. The side plate 11 is provided with an installation opening, the suction pipe 31 passes through the installation opening, and the sealing member 33 is arranged between the suction pipe 31 and the side plate 11 to seal the installation opening. Among them, the sealing member 33 forms a seal by extrusion, which can not only ensure the sealing between the sealing member 33 and the side plate 11, but also ensure the sealing between the sealing member 33 and the suction pipe 31.
[0048] In this embodiment, the temperature control mechanism 3 includes a plurality of suction pipes 31. The plurality of suction pipes 31 are arranged at intervals in the horizontal direction, and each of the plurality of suction pipes 31 is separately connected with a vacuum generating assembly to realize the separate control of each suction pipe 31, so as to be able to more precisely adjust the temperature field inside the cavity 12.
[0049] In order to improve the adjustment rate and adjustment effect of the temperature field inside the cavity 12, temperature control mechanisms 3 are provided on both side plates 11. The two temperature control mechanisms 3 can simultaneously adjust the temperature field inside the cavity 12 from both sides of the drainage member 2.
[0050] As Figure 3 shown, the arrangement direction of the plurality of suction pipes 31 of the temperature control mechanism 3 forms an angle with the interval direction of the two side plates 11, so that the two temperature control mechanisms 3 can cover the area inside the cavity 12 as much as possible, improving the accuracy and rate of temperature field control.
[0051] As Figure 2 and Figure 4As shown, one end of the suction pipe 31 located inside the cavity 12 is higher than the lowest point of the drainage member 2 and is spaced apart from the drainage member 2. It can be understood that when the molten glass leaves the drainage member 2, it will be stretched under the action of gravity and then cooled and solidified into a shape. The suction pipe 31 can change the temperature field above the lowest point of the drainage member 2, thereby changing the temperature before the molten glass leaves the drainage member 2. This can not only make the stress distribution of the molten glass after forming uniform, but also avoid affecting the process of cooling and forming the molten glass.
[0052] In this embodiment, the drainage member 2 includes two relatively arranged drainage walls 21, and the distance between the two drainage walls 21 gradually decreases in the direction from top to bottom. When the molten glass flows onto the drainage member 2, it will flow down from both sides of the drainage member 2 and converge at the bottom of the drainage member 2 along the drainage walls 21 to ensure that the shape of the molten glass is controllable during cooling and forming.
[0053] Furthermore, an overflow groove 22 is formed on the top surface of the drainage member 2, and a feed port 14 is formed on the top of the forming container 1. The feed port 14 is located above the overflow groove 22. Since the overflow groove 22 is provided on the drainage member 2, the molten glass will preferentially enter the overflow groove 22. After the overflow groove 22 is filled with molten glass, the molten glass will overflow. Due to the existence of the overflow groove 22, the molten glass will overflow evenly around the overflow groove 22. That is to say, when the molten glass flows downward along the drainage member 2, the distribution is more uniform, improving the forming effect of the glass 100.
[0054] As Figure 2 and Figure 4 shown, a heat insulation platform 111 is convexly provided on the inner wall of the side plate 11. The heat insulation platform 111 is located below the temperature control mechanism 3. The distance between the heat insulation platforms 111 of the two side plates 11 gradually decreases in the direction from top to bottom, and an opening 13 is formed between the two heat insulation platforms 111. It can be understood that the heat insulation platform 111 of the side plate 11 can reduce the size of the opening 13, prevent the air inside the cavity 12 from exchanging heat with the outside of the forming container 1 through the opening 13, improve the stability of the temperature inside the cavity 12, and improve the accuracy of the temperature control mechanism 3 in adjusting the temperature field inside the cavity 12.
[0055] During the forming process of the molten glass, the cooling rate needs to be strictly adjusted to control the performance of the formed glass 100. To achieve this goal, the forming device further includes an annealing furnace 4. The annealing furnace 4 is arranged below the forming container 1 and is communicated with the opening 13. The molten glass flows into the annealing furnace 4 through the opening 13 after flowing down from the lowest point of the drainage member 2. The annealing furnace 4 can adjust the temperature gradient according to requirements, so that the cooling rate of the molten glass is within a preset range, ensuring that the performance of the formed glass 100 meets the requirements.
[0056] The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, based on the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation on the present invention.
Claims
1. A glass forming device, characterized in that, Comprising: A formed container (1), the formed container (1) comprising two side plates (11) and a cavity (12) between the two side plates (11), and an opening (13) formed at the bottom ends of the two side plates (11); A heating assembly configured to heat the interior of the cavity (12); A drainage member (2) disposed within the cavity (12) and above the opening (13); A temperature control mechanism (3), the temperature control mechanism (3) being provided on at least one of the side plates (11), the temperature control mechanism (3) comprising an air suction pipe (31) and a vacuum generating assembly, one end of the air suction pipe (31) being located within the cavity (12), and the other end of the air suction pipe (31) being connected to the vacuum generating assembly.
2. The glass forming device according to claim 1, characterized in that, The vacuum generating assembly comprises a vacuum generating pipe (32) and a blowing member, the air suction pipe (31) being connected to the side wall of the vacuum generating pipe (32) and communicating with the vacuum generating pipe (32), and the blowing member being connected to one end of the vacuum generating pipe (32).
3. The glass forming device according to claim 2, characterized in that, The vacuum generating pipe (32) comprises a small-diameter section (321) and large-diameter sections (322) respectively provided at both ends of the small-diameter section (321), the blowing member being connected to one of the large-diameter sections (322), and the air suction pipe (31) being connected to the small-diameter section (321).
4. The glass forming device according to claim 1, wherein, The temperature control mechanism (3) further comprises a seal (33), the side plate (11) is provided with a mounting opening, the air suction pipe (31) passes through the mounting opening, and the seal (33) is disposed between the air suction pipe (31) and the side plate (11) to seal the mounting opening.
5. The glass forming device according to claim 1, characterized in that, The temperature control mechanism (3) comprises a plurality of the air suction pipes (31), the plurality of air suction pipes (31) being spaced apart in the horizontal direction; and / or Both of the two side plates (11) are provided with the temperature control mechanism (3).
6. The glass forming device according to claim 1, wherein, The end of the air suction pipe (31) located within the cavity (12) is higher than the lowest point of the drainage member (2) and is spaced apart from the drainage member (2).
7. The glass forming device according to any one of claims 1 to 6, characterized in that, The drainage member (2) comprises two relatively disposed drainage walls (21), and the distance between the two drainage walls (21) gradually decreases in the direction from top to bottom.
8. The glass forming device according to claim 7, characterized in that, An overflow groove (22) is formed on the top surface of the drainage member (2), and a feed inlet (14) is formed at the top of the formed container (1), the feed inlet (14) being located above the overflow groove (22).
9. The glass forming device according to any one of claims 1 to 6, characterized in that, A heat insulation platform (111) is convexly provided on the inner wall of the side plate (11), the heat insulation platform (111) is located below the temperature control mechanism (3), and the distance between the heat insulation platforms (111) of the two side plates (11) gradually decreases in the direction from top to bottom, and the opening (13) is formed between the two heat insulation platforms (111).
10. The glass forming device according to any one of claims 1 to 6, characterized in that, The forming device further comprises an annealing furnace (4), the annealing furnace (4) being disposed below the formed container (1) and communicating with the opening (13).