A glass liquid distribution apparatus and method suitable for producing flexible glass

Abstract

The present application relates to the technical field of flexible glass prepared by down-draw method, and particularly relates to a glass liquid distribution device and method suitable for producing flexible glass. In view of the problem that the homogenized glass liquid is not evenly distributed in the forming process in the prior art, the glass liquid distribution device suitable for producing flexible glass comprises a glass liquid distributor, the glass liquid distributor comprises a distributor inlet, an upper cavity, a lower cavity and a cavity transition region communicating the upper cavity and the lower cavity, the distributor inlet is in communication with the upper cavity; the top of the upper cavity is an arc-shaped inclined structure, the included angle between the arc-shaped inclined structure and the horizontal plane is an acute angle; and the cavity transition region is a narrowed structure of the thickness of the distributor cavity. The glass liquid distribution device suitable for producing flexible glass effectively avoids the dead zone generated in the flowing process of the glass liquid in the distributor, and realizes the uniform distribution of the glass liquid.

Description

Technical Field

[0001] This invention relates to the field of flexible glass manufacturing technology using the pull-down method, specifically to a glass melt distribution device and method suitable for producing flexible glass. Background Technology

[0002] Flexible glass has extremely high light transmittance, excellent scratch resistance, outstanding water and oxygen barrier properties, and good resistance to deformation. It has broad application prospects in fields such as foldable screen mobile phones, foldable screen computers, and flexible solar cells.

[0003] Currently, the main manufacturing processes for flexible glass include chemical thinning and single-stage drawing. Chemical thinning uses a glass sheet thicker than 0.2 mm and employs acid etching to achieve the target thickness. While chemical thinning has relatively low production difficulty, it suffers from low material utilization, difficulty in uniformity control, and significant environmental impact. Single-stage drawing, on the other hand, involves forming the glass in a single step, resulting in superior surface quality and thickness uniformity, and is suitable for large-scale continuous production. However, single-stage drawing has extremely high technical barriers and is very difficult to manufacture.

[0004] Existing technology discloses a drawing device suitable for a down-drawing process. Specifically, below the inlet pipe, there are two symmetrically inclined manifolds, connected to a cavity below. The thickness of the cavity is smaller than the diameter of the manifolds, thus promoting the distribution of molten glass to both sides. However, due to the significant geometric abrupt change, this structure is prone to pressure fluctuations, further exacerbating uneven distribution.

[0005] In the process of flexible glass preparation, it is crucial to distribute the homogenized molten glass evenly and stably above the slit, ensure the stability of the hydrostatic pressure of the molten glass, and minimize dead zones. Summary of the Invention

[0006] The purpose of this invention is to provide a glass melt distribution device suitable for the production of flexible glass, which solves the problem of uneven distribution of homogenized glass melt during the forming process in the prior art.

[0007] To address the aforementioned problems, this invention proposes a glass liquid distribution device suitable for producing flexible glass. The technical solution adopted is as follows: A glass liquid dispensing device suitable for producing flexible glass includes a glass liquid distributor. The glass liquid distributor includes a distributor inlet, an upper cavity, a lower cavity, and a cavity transition zone connecting the upper cavity and the lower cavity. The distributor inlet is connected to the upper cavity. The top of the upper cavity is an arc-shaped inclined structure, and the angle between the arc-shaped inclined structure and the horizontal plane is an acute angle. The cavity transition zone is a narrowing structure of the distributor cavity thickness.

[0008] Furthermore, the arc-shaped inclined structure is an arc-shaped inclined surface, which is symmetrically inclined downwards on both sides of the distributor cavity width direction with the distributor inlet as the center, so as to guide the glass liquid to flow evenly to both sides of the distributor.

[0009] Furthermore, the angle α between the arc-shaped inclined surface and the horizontal plane is 5°~30°.

[0010] Furthermore, the upper cavity, the arc-shaped inclined structure, and the cavity transition area are a smooth integrated structure; the ratio of the thickness W1 of the upper cavity to the thickness W2 of the lower cavity is 2:(1~1.5).

[0011] Furthermore, the cavity transition zone includes two symmetrical inclined transition surfaces on both sides in the thickness direction of the distributor cavity and two symmetrical vertical transition surfaces on both sides in the width direction of the distributor cavity. The lateral distance between the two symmetrical inclined transition surfaces decreases from top to bottom along the height direction of the distributor cavity. The cavity transition zone, the upper cavity, and the lower cavity are a smooth integrated structure. The ratio of the height H1 of the cavity transition zone to the thickness W2 of the lower cavity is 1:(1~2). Furthermore, the lower cavity is a vertical cavity structure, and the ratio of the height H2 to the thickness W2 of the lower cavity is (4~6):1. The bottom of the lower cavity is connected to the glass forming device.

[0012] Furthermore, the glass melt distribution device also includes a direct heating component, which includes three sets of current loops: a main current loop, a first side current loop, and a second side current loop. The main current circuit is located in the lower cavity and is used to regulate the overall temperature of the molten glass in the distributor cavity. The first side current loop and the second side current loop are respectively located on the top two sides of the upper cavity, and are used to regulate the temperature on both sides of the glass liquid distributor.

[0013] Furthermore, an auxiliary heating assembly is provided around the glass melt distributor. The auxiliary heating assembly includes multiple sets of auxiliary heating elements for regulating the temperature distribution of the glass melt within the distributor cavity.

[0014] Furthermore, the glass liquid dispenser is made of platinum or a platinum-rhodium alloy, and the mass percentage of platinum to rhodium in the glass liquid dispenser is (90~100):(0~10).

[0015] This invention proposes a method for distributing molten glass suitable for producing flexible glass, based on the aforementioned molten glass distribution device suitable for producing flexible glass, comprising the following steps: The molten glass flows into the upper cavity from the distributor inlet. Under the combined action of the arc-shaped inclined structure at the top of the upper cavity and the narrowing structure of the cavity transition zone, the molten glass is evenly distributed to both sides of the molten glass distributor, and then enters the lower cavity, and then enters the glass forming machine.

[0016] Compared with the prior art, this application has the following beneficial effects: In this application, the molten glass distributor comprises a distributor inlet, an upper cavity, a cavity transition zone, and a lower cavity. The top of the upper cavity has an arc-shaped inclined structure, and the cavity transition zone is a narrowing structure of the distributor cavity thickness. This allows the homogenized molten glass to flow from the distributor inlet into the upper cavity. The arc-shaped inclined structure at the top of the upper cavity and the narrowing structure of the cavity thickness facilitate the distribution of the molten glass to both sides of the distributor before it enters the lower cavity. This effectively avoids dead zones generated during the flow of the molten glass within the distributor, achieving uniform distribution. The arc-shaped inclined structure at the top of the upper cavity primarily prevents the molten glass from stagnating in corners, creating dead zones and affecting product quality. The upper and lower cavities of the distributor are connected by the cavity transition zone. The design of the narrowing structure of the cavity transition zone facilitates the distribution of the molten glass to both sides and reduces eddies and dead zones, avoiding local stagnation and velocity differences. The glass liquid distribution device suitable for producing flexible glass in this application has a smooth glass liquid distributor structure without geometric abrupt changes, which avoids stress concentration caused by uneven thermal expansion and extends the service life of the distributor.

[0017] The arc-shaped inclined structure is an arc-shaped inclined surface that slopes symmetrically downwards towards both sides of the distributor cavity width, centered on the distributor inlet, to guide the molten glass to flow to both sides of the distributor. This structure achieves symmetrical and uniform distribution of the molten glass to both sides from the center point of the distributor inlet, preventing unilateral convergence or deflection of the molten glass within the cavity from the source.

[0018] The angle α between the curved inclined surface and the horizontal plane is 5°~30°. This more effectively promotes the distribution of molten glass to both sides of the distributor. When the angle α between the curved inclined surface and the horizontal plane is less than 5°, the guiding effect is too weak, and the molten glass is difficult to spread effectively; when the angle α between the curved inclined surface and the horizontal plane is greater than 30°, it affects the heating effect of the main current circuit.

[0019] The cavity transition zone includes two symmetrical inclined transition surfaces on both sides along the thickness direction of the distributor cavity and two symmetrical vertical transition surfaces on both sides along the width direction of the distributor cavity. The lateral distance between the two symmetrical inclined transition surfaces decreases from top to bottom along the height direction of the distributor cavity. The cavity transition zone, the upper cavity, and the lower cavity are a smooth, integrated structure. The ratio of the height H1 of the cavity transition zone to the thickness W2 of the lower cavity is 1:(1~2). The cavity transition zone is designed with an "inverted trapezoidal" rectification structure. The two symmetrical inclined transition surfaces guide the molten glass to converge smoothly, while the vertical surfaces maintain dimensional stability in the width direction. The combination of these two features can efficiently guide the molten glass from the wide and thick upper cavity to the narrow lower cavity without turbulence or dead zones, which is the core structure for achieving "uniform narrowing".

[0020] The glass melt distribution device also includes a direct heating component, which includes three sets of current loops: a main current loop, a first side current loop, and a second side current loop. The main current circuit is located in the lower cavity and is used to regulate the overall temperature of the molten glass in the distributor cavity. The first and second side current loops are respectively located on the top sides of the upper cavity to regulate the temperature on both sides of the glass liquid distributor. When there is a thickness deviation on both sides of the glass plate, the heat loss caused by uneven heat dissipation on both sides of the distributor can be precisely compensated by independently adjusting the main current loop, the first side current loop, and the second side current loop, thereby achieving uniform thickness on both sides.

[0021] An auxiliary heating assembly is installed around the periphery of the molten glass distributor. This assembly includes multiple sets of auxiliary heating elements used to regulate the temperature distribution of the molten glass within the distributor cavity. The auxiliary heating assembly, together with the built-in direct heating, forms a "coordinated internal and external, main and auxiliary" temperature field management strategy. The auxiliary heating primarily functions to maintain heat, homogenize heat, and regulate temperature gradients. It effectively reduces heat loss from the cavity to the environment, weakens longitudinal and lateral temperature gradients, and makes the temperature field of the entire distributor system more stable and uniform, providing a good thermal environment foundation for the precise control of direct heating. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of flexible glass molding; Figure 2 This is a schematic diagram of the distributor in the glass liquid distribution device suitable for producing flexible glass according to the present invention. Figure 3 This is a cross-sectional schematic diagram of the distributor in the glass liquid distribution device suitable for producing flexible glass according to the present invention; Figure 4 This is a schematic diagram of the circuit distribution of the distributor in the glass liquid distribution device suitable for producing flexible glass according to the present invention. Figure 5 This is a schematic diagram of the auxiliary heating of the distributor in the glass melt distribution device suitable for producing flexible glass according to the present invention; Figure 6 This is a streamline diagram of the flow of molten glass in a molten glass distributor.

[0023] In the figure, 1. Molten glass, 2. Molten glass distributor, 2-1. Distributor inlet, 2-2. Top of upper cavity, 2-3. Upper cavity, 2-4. Cavity transition zone, 2-5. Lower cavity, 3. Glass forming device, 4. Traction roller, 5. Flexible glass, 6. Main current circuit, 7. First side current circuit, 8. Second side current circuit, 9. Auxiliary heating element. Detailed Implementation

[0024] As cited in the background art, in the prior art, the homogenized molten glass is unevenly distributed during the forming process. Therefore, the present invention provides a molten glass distribution device suitable for the production of flexible glass, including a molten glass distributor. The molten glass distributor includes a distributor inlet, an upper cavity, a lower cavity, and a cavity transition zone connecting the upper cavity and the lower cavity. The distributor inlet is connected to the upper cavity, and is used to introduce molten glass. The top of the upper cavity has an arc-shaped inclined structure with an acute angle to the horizontal plane. When the molten glass flows in from the inlet, this structure uses gravity and the flow channel shape to naturally guide the molten glass to spread symmetrically from the center to both sides of the cavity width, preventing flow deviation from the source. The cavity transition zone is a narrowing structure of the distributor cavity thickness, allowing the molten glass to undergo a gradual and uniform thickness compression process, like a "streamlined convergent," effectively avoiding eddies, turbulence, and dead zones caused by sudden cross-sectional contraction, ensuring flow stability. This application adopts a three-stage cavity design of "guidance-transition-stabilization" to effectively avoid dead zones generated during the flow of molten glass in the distributor, and realizes uniform, stable and undisturbed flow of molten glass in the distributor, thus laying the foundation for the preparation of highly uniform flexible glass.

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 intended to explain this application, and should not be construed as limiting this application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Specific embodiment 1 of the glass liquid distribution device of the present invention suitable for producing flexible glass: In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, a glass liquid distribution device suitable for producing flexible glass includes a glass liquid distributor 2. The glass liquid distributor 2 includes a distributor inlet 2-1, an upper cavity 2-3, a lower cavity 2-5, and a cavity transition zone 2-4 connecting the upper cavity 2-3 and the lower cavity 2-5. The distributor inlet 2-1 is connected to the upper cavity 2-3. The top 2-2 of the upper cavity has an arc-shaped inclined structure, and the angle between the arc-shaped inclined structure and the horizontal plane is an acute angle. The cavity transition zone 2-4 is a structure that narrows the thickness of the distributor cavity. The glass liquid distributor 2 is made of platinum or a platinum-rhodium alloy, and the mass percentage of platinum to rhodium in the material of the glass liquid distributor 2 is (90~100):(0~10). In this embodiment, the wall thickness of the glass liquid distributor 2 is 0.5 mm-2 mm.

[0028] The arc-shaped inclined structure is an arc-shaped inclined surface that slopes symmetrically downwards towards both sides of the distributor cavity width, with the distributor inlet 2-1 as the center, to guide the glass melt 1 to flow towards both sides of the glass melt distributor 2. The angle α between the arc-shaped inclined surface and the horizontal plane is 5°~30°.

[0029] Specific embodiment 2 of the glass liquid distribution device of the present invention suitable for producing flexible glass: Based on the above-described technical concept of the present invention, or based on the specific embodiments of the present invention described above, another embodiment is provided below.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the upper cavity 2-3, the arc-shaped inclined structure, and the cavity transition zone 2-4 are a smooth, integrated structure. The ratio of the thickness W1 of the upper cavity 2-3 to the thickness W2 of the lower cavity 2-5 is 2:(1~1.5). The smooth, integrated structure eliminates geometric abrupt changes and connecting gaps inside the flow channel, preventing eddies or material buildup at corners. Simultaneously, based on the ratio of the thickness W1 of the upper cavity 2-3 to the thickness W2 of the lower cavity 2-5, the glass melt 1 flows smoothly and without disturbance when transitioning from a thick cavity to a thin cavity, which is a key parameter for achieving uniform thinning.

[0031] The cavity transition zone 2-4 includes two symmetrical inclined transition surfaces on both sides in the thickness direction of the distributor cavity and two symmetrical vertical transition surfaces on both sides in the width direction of the distributor cavity. The lateral distance between the two symmetrical inclined transition surfaces decreases from top to bottom along the height direction of the distributor cavity. The cavity transition zone 2-4, the upper cavity 2-3, and the lower cavity 2-5 are a smooth integrated structure. The ratio of the height H1 of the cavity transition zone 2-4 to the thickness W2 of the lower cavity 2-5 is 1:(1~2).

[0032] The lower cavity 2-5 is a vertical cavity structure, with a height H2 to thickness W2 ratio of (4~6):1. The bottom of the lower cavity 2-5 is connected to the glass forming device 3. The selection of the height H2 of the lower cavity 2-5 is related to the required pressure drop of the glass. The lower cavity 2-5 provides a "steady flow zone" with sufficient length and stable cross-section. Within this zone, the initially distributed molten glass from the transition zone undergoes sufficient flow development and temperature homogenization, and the internal flow velocity and temperature distribution tend to be uniform. This creates decisive conditions for forming a stable, flat, and uniform molten glass surface at the inlet of the forming device, directly determining the lateral thickness consistency of the formed glass ribbon.

[0033] Specifically, the lower end of the distributor inlet 2-1 is connected to the upper end of the upper cavity 2-3, the lower end of the upper cavity 2-3 is connected to the wide opening of the cavity transition area 2-4, the narrow opening of the cavity transition area 2-4 is connected to the upper end of the lower cavity 2-5, and the bottom of the lower cavity 2-5 is connected to the glass forming device 3.

[0034] Specific embodiment 3 of the glass liquid distribution device of the present invention suitable for producing flexible glass: Based on the above-described technical concept of the present invention, or based on the specific embodiments of the present invention described above, another embodiment is provided below.

[0035] In this embodiment, as Figure 4 and Figure 5As shown, the glass liquid distribution device also includes a direct heating component, which includes three sets of current loops: a main current loop 6, a first side current loop 7, and a second side current loop 8. The main current loop 6 is located at position 2-5 in the lower cavity and is used to regulate the overall temperature of the glass liquid 1 in the distributor cavity. The first side current loop 7 and the second side current loop 8 are respectively located at positions 2-2 on both sides of the top of the upper cavity and are used to regulate the temperature on both sides of the glass liquid distributor 2.

[0036] The glass liquid distributor 2 is directly heated by the main current circuit 6, the first side current circuit 7, and the second side current circuit 8. When there is a deviation in the thickness on both sides of the glass plate, the thickness on both sides can be made consistent by adjusting the main current circuit 6, the first side current circuit 7, and the second side current circuit 8 respectively.

[0037] In this embodiment, an auxiliary heating assembly is provided around the glass melt distributor 2. The auxiliary heating assembly includes multiple sets of auxiliary heating elements 9, which are used to regulate the temperature distribution of the glass melt 1 within the distributor cavity. Specifically, the auxiliary heating assembly includes 5 sets of auxiliary heating elements 9.

[0038] Direct heating of the molten glass distributor 2 can rapidly increase the temperature of the cavity, but it can easily cause uneven temperature distribution in the molten glass 1. Auxiliary heating can improve the heat retention of the molten glass 1, but it takes a long time to reach the target equilibrium temperature, requiring more than 6 hours. Therefore, in this embodiment, the molten glass distributor 2 uses a combination of direct heating and auxiliary heating.

[0039] In other embodiments, the number of auxiliary heating elements 9 can be adjusted as needed.

[0040] Specific embodiment 1 of the glass melt distribution method of the present invention suitable for producing flexible glass: In this embodiment, based on the above-described glass melt distribution device suitable for producing flexible glass, the glass melt distribution method suitable for producing flexible glass includes the following steps: The molten glass flows into the upper cavity 2-3 from the distributor inlet 2-1. Under the combined action of the arc-shaped inclined structure at the top of the upper cavity 2-3 and the narrowing structure of the cavity transition zone 2-4, the molten glass 1 is evenly distributed to both sides of the molten glass distributor 2, and then enters the lower cavity 2-5, and then enters the glass forming machine 3.

[0041] Specifically, a suitable method for distributing molten glass for producing flexible glass includes the following steps: The molten glass flows into the upper cavity 2-3 from the distributor inlet 2-1. Under the combined action of the arc-shaped inclined structure at the top of the upper cavity 2-3 and the narrowing structure of the cavity transition zone 2-4, the molten glass is evenly distributed to both sides of the molten glass distributor 2, and then enters the lower cavity 2-5, and then enters the glass forming machine 3. At the same time, the viscosity of the molten glass is controlled by a combination of direct heating and auxiliary heating. After passing through the glass forming machine 3, the molten glass 1 is drawn into flexible glass 5 by the traction roller 4.

[0042] Based on the above-mentioned glass liquid distribution device and method suitable for producing flexible glass, the technical solution was verified using flow trajectory simulation. Specifically: The upper cavity 2-3 of the glass liquid distributor 2 has a width W1 of 100 mm, the lower cavity 2-5 has a width W2 of 60 mm, the transition zone 2-4 has a height H1 of 30 mm, the top 2-2 of the upper cavity has an arc-shaped inclined surface that forms a 10° angle with the horizontal plane, and the lower cavity 2-5 has a height H2 of 300 mm. For example... Figure 6 As shown in the flow trajectory diagram, the molten glass 1 exhibits good distribution within the distributor cavity.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A glass liquid dispensing device suitable for producing flexible glass, characterized in that, The device includes a liquid glass dispenser (2), which includes a dispenser inlet (2-1), an upper cavity (2-3), a lower cavity (2-5), and a cavity transition zone (2-4) connecting the upper cavity (2-3) and the lower cavity (2-5). The dispenser inlet (2-1) is connected to the upper cavity (2-3). The top (2-2) of the upper cavity is an arc-shaped inclined structure, and the angle between the arc-shaped inclined structure and the horizontal plane is an acute angle. The cavity transition zone (2-4) is a narrowing structure of the dispenser cavity thickness.

2. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The arc-shaped inclined structure is an arc-shaped inclined surface. The arc-shaped inclined surface is symmetrically inclined downwards on both sides of the width direction of the distributor cavity with the distributor inlet (2-1) as the center, so as to guide the glass liquid to flow to both sides of the glass liquid (1) distributor (2).

3. The glass melt distribution device suitable for producing flexible glass according to claim 2, characterized in that, The angle α between the arc-shaped inclined surface and the horizontal plane is 5°~30°.

4. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The upper cavity (2-3) and the arc-shaped inclined structure and the cavity transition area (2-4) are a smooth integrated structure; the ratio of the thickness W1 of the upper cavity (2-3) to the thickness W2 of the lower cavity (2-5) is 2:(1~1.5).

5. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The cavity transition area (2-4) includes two symmetrical inclined transition surfaces on both sides in the thickness direction of the distributor cavity and two symmetrical vertical transition surfaces on both sides in the width direction of the distributor cavity. The lateral distance between the two symmetrical inclined transition surfaces decreases from top to bottom along the height direction of the distributor cavity. The cavity transition area (2-4) is a smooth integrated structure with the upper cavity (2-3) and the lower cavity (2-5). The ratio of the height H1 of the cavity transition area (2-4) to the thickness W2 of the lower cavity (2-5) is 1:(1~2).

6. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The lower cavity (2-5) is a vertical cavity structure. The ratio of the height H2 to the thickness W2 of the lower cavity (2-5) is (4~6):

1. The bottom of the lower cavity (2-5) is connected to the glass forming device (3).

7. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The glass melt distribution device also includes a direct heating component, which includes three sets of current loops: a main current loop (6), a first side current loop (7), and a second side current loop (8). The main current circuit (6) is located in the lower cavity (2-5) and is used to regulate the overall temperature of the glass melt (1) in the distributor cavity; The first side current loop (7) and the second side current loop (8) are respectively located on both sides of the top (2-2) of the upper cavity to regulate the temperature on both sides of the glass liquid distributor (2).

8. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, An auxiliary heating assembly is provided around the glass liquid distributor (2), which includes multiple sets of auxiliary heating elements (9) for regulating the temperature distribution of the glass liquid (1) in the distributor cavity.

9. The glass melt distribution device suitable for producing flexible glass according to claim 1, characterized in that, The glass liquid distributor (2) is made of platinum or platinum-rhodium alloy, and the mass percentage of platinum to rhodium in the glass liquid distributor (2) is (90~100):(0~10).

10. A method for distributing molten glass suitable for producing flexible glass, characterized in that, A glass liquid dispensing apparatus suitable for producing flexible glass according to any one of claims 1-9, comprising the following steps: The molten glass (1) flows into the upper cavity (2-3) from the distributor inlet (2-1). Under the combined action of the arc-shaped inclined structure at the top of the upper cavity (2-3) and the narrowing structure of the cavity transition area (2-4), the molten glass (1) is evenly distributed to both sides of the molten glass distributor (2), and then enters the lower cavity (2-5), and then enters the glass forming device (3).

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