An airflow regulation device for flexible glass forming

Abstract

The application provides an air flow regulating device for flexible glass forming, comprising an annealing furnace body; first regulating components and second regulating components are arranged on the front and back sides of the annealing furnace body respectively; the first regulating components and the second regulating components both comprise: a rotating shaft which is arranged in the annealing furnace body in a rotating mode, and the first end of the rotating shaft protrudes from the left side wall of the annealing furnace body, and the part of the rotating shaft in the annealing furnace body is provided with a downward extending baffle; the first end of the rotating shaft is fixedly provided with a left rotating handle, and the left side outer wall of the annealing furnace body is provided with a left positioning mechanism, and the left positioning mechanism can position the left rotating handle to a set angle. The air flow regulating device for flexible glass forming can greatly improve the production quality and product yield of flexible glass.

Description

Technical Field

[0001] This invention relates to the field of flexible glass production, and in particular to an airflow control device for flexible glass forming. Background Technology

[0002] Flexible glass (UTG) refers to ultra-thin glass with a thickness of <100μm. As the core cover material for foldable displays, it has the characteristics of being ultra-thin, high-strength (Mohs hardness ≥6), wear-resistant, having excellent optical properties and low curvature bending ability (bending radius <3mm). It is an important technological direction to replace polymer cover plates.

[0003] The fabrication of flexible glass mainly falls into two categories: one-step forming and two-step forming. One-step forming directly shapes ultra-thin strips from molten glass. This includes: slit-drawing: molten glass is extruded through a platinum-rhodium alloy slit and thinned by gravity and precision traction rollers, requiring precise control of melt viscosity, temperature field, and traction synchronization; waterfall (overflow drawing): molten glass overflows from both sides of the feeding tank, fuses at the tip to form a film, and is then drawn down to form the final shape, achieving a naturally smooth surface, but requiring stringent thermal balance and cleanliness; float glass: molten glass is float-polished in a tin bath, and by optimizing the edge-drawing machine and temperature field, near-flexible glass thickness products can be produced, showing potential for large-scale production. Two-step forming involves thinning thick glass substrates, mainly including: chemical thinning: isotropic dissolution using HF-based etching solutions, requiring concentration / temperature control to ensure uniformity; and physical thinning: grinding and polishing with diamond / cerium oxide abrasives, which easily introduces subsurface damage and results in low material utilization.

[0004] Secondary forming suffers from problems such as low product yield, small size, raw material waste, and acid exposure. Primary forming, on the other hand, has a simple process flow, allows for continuous glass ribbon production, boasts a high yield, is environmentally friendly, and is easier to produce flexible glass with larger dimensions and higher strength, better meeting market demands. However, in primary forming methods, except for float glass, the glass flow is from top to bottom; the molten glass falls under gravity and is then stretched thin by a traction device. This method results in a lower temperature at the bottom and a higher temperature at the top of the flexible glass, causing airflow to enter the annealing furnace from the bottom and overflow from the top, creating a chimney effect. This can lead to vibrations in the flexible glass sheet, and even breakage. Furthermore, if there is a mismatch between the output rate and the traction device, wrinkles may appear on the glass ribbon. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an airflow control device for flexible glass forming, so as to solve the problems existing in the flexible glass forming of the prior art.

[0006] To achieve the above and other related objectives, the present invention provides an airflow control device for flexible glass forming, comprising an annealing furnace body; a first control component and a second control component are respectively provided on the front and rear sides of the annealing furnace body, the first control component and the second control component each comprising: a rotating shaft rotatably disposed within the annealing furnace body, wherein the first end of the rotating shaft protrudes from the left side wall of the annealing furnace body, and the portion of the rotating shaft located within the annealing furnace body is provided with a downwardly extending baffle plate; a left rotating handle is fixedly provided at the first end of the rotating shaft, and a left positioning mechanism is provided on the left outer wall of the annealing furnace body, the left positioning mechanism being capable of positioning the left rotating handle to a set angle.

[0007] Furthermore, the left positioning mechanism includes a left positioning support fixedly disposed on the left outer wall of the annealing kiln body. The first end of the rotating shaft passes through the left positioning support and protrudes from the left positioning support. The rotating shaft is rotatable relative to the left positioning support. The left positioning support is provided with a plurality of left positioning grooves. The plurality of left positioning grooves are arranged in an arc shape at equal angular intervals. A left positioning rod is movably connected to the left rotating handle. One end of the left positioning rod is used to insert into the left positioning groove.

[0008] Furthermore, the left positioning rod is threadedly connected to the left rotating handle.

[0009] Furthermore, each of the left positioning grooves is provided with a corresponding angle value next to it.

[0010] Further, the rotating shaft includes a left rotating shaft, a right rotating shaft, and a connecting shaft. The left rotating shaft is rotatably disposed on the left side wall of the annealing kiln body, and the right rotating shaft is rotatably disposed on the right side wall of the annealing kiln body. The connecting shaft is located inside the annealing kiln body. The first end of the connecting shaft is fixedly connected to the left rotating shaft, and the second end of the connecting shaft is provided with a keyway. The right rotating shaft is provided with a connecting key. The keyway and the connecting key cooperate with each other, and the length of the keyway along the axial direction of the connecting shaft is greater than the length of the connecting key. The baffle is disposed on the connecting shaft, and there is a predetermined interval between the left side of the baffle and the left inner wall of the annealing kiln body, and a predetermined interval between the right side of the baffle and the right inner wall of the annealing kiln body.

[0011] Furthermore, the second end of the rotating shaft protrudes from the right side wall of the annealing kiln body, and a right rotating handle is fixedly provided at the second end of the rotating shaft. A right positioning mechanism is provided on the right outer wall of the annealing kiln body, and the right positioning mechanism can position the right rotating handle to a set angle.

[0012] Furthermore, the right positioning mechanism includes a right positioning support fixedly installed on the outer right side wall of the annealing kiln body. The second end of the rotating shaft passes through the right positioning support and protrudes from the right positioning support. The rotating shaft can rotate relative to the right positioning support. The right positioning support is provided with multiple right positioning grooves. The multiple right positioning grooves are arranged in an arc shape at equal angular intervals. A right positioning rod is movably connected to the right rotating handle. One end of the right positioning rod is used to insert into the right positioning groove.

[0013] Furthermore, the bottom outlet of the annealing kiln body is slidably provided with a front baffle and a rear baffle, which can move closer to or further away from each other.

[0014] Furthermore, both the front baffle and the rear baffle are equipped with scales.

[0015] Furthermore, both the front baffle and the rear baffle have downwardly sloping chamfers on the sides that are close to each other.

[0016] As described above, the airflow control device for flexible glass forming of the present invention has the following beneficial effects: the airflow control device for flexible glass forming of the present invention can open the two baffles located on the front and rear sides at different angles according to different working conditions, thereby preventing the chimney effect in the annealing furnace. Moreover, by reciprocating the rotation of the two left-hand handles, the wrinkled glass belt can be flattened, so that it can be pulled out of the annealing furnace normally, thereby greatly improving the production quality and product yield of flexible glass. Attached Figure Description

[0017] Figure 1 The image shown is a front view of the airflow control device for flexible glass forming provided by the present invention.

[0018] Figure 2 The image shown is a side view of the airflow control device for flexible glass forming provided by the present invention.

[0019] Figure 3 The diagram shows the first state of the two baffles provided by the present invention.

[0020] Figure 4 The diagram shows the second state of the two baffles provided by the present invention.

[0021] Figure 5 This is a schematic diagram of the third state of the two baffles provided by the present invention.

[0022] Explanation of reference numerals in the attached figures 10-Annealing furnace body; 10a-Left side wall; 10b-Right side wall; 101-Front baffle; 102-Rear baffle; 103-Slide rail; 11-First control component; 12-Second control component; 20-Rotating shaft; 201-Left rotating shaft; 202-Right rotating shaft; 203-Connecting shaft; 21-Baffle plate; 22-Left rotating handle; 221-Left positioning rod; 23-Left positioning support; 24-Right rotating handle; 241-Right positioning rod; 25-Right positioning support; 100-Glass belt. Detailed Implementation

[0023] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] In the description of this invention, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., used to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Please see Figures 1 to 5 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] This invention provides an airflow control device (hereinafter referred to as "airflow control device") for flexible glass forming, such as... Figure 1 and Figure 2 As shown, the airflow control device includes an annealing kiln body 10. The front and rear sides of the annealing kiln body 10 are respectively provided with a first control component 11 and a second control component 12. Specifically, the first control component 11 and the second control component 12 both include a rotating shaft 20 rotatably disposed inside the annealing kiln body 10. The first end of the rotating shaft 20 protrudes from the left side wall 10a of the annealing kiln body 10. The portion of the rotating shaft 20 located inside the annealing kiln body 10 is provided with a downwardly extending baffle plate 21. A left rotating handle 22 is fixedly provided at the first end of the rotating shaft 20. A left positioning mechanism is provided on the left outer wall of the annealing kiln body 10. The left positioning mechanism can position the left rotating handle 22 to a set angle.

[0028] The beneficial effects of the airflow control device for flexible glass forming of the present invention are as follows: In the early stage of production, due to the need for frequent adjustments to the production process, in order to ensure that the glass strip 100 can be smoothly pulled out of the annealing furnace 10, the left rotating handle 22 of the first control component 11 on the front side of the annealing furnace 10 and the left rotating handle 22 of the second control component 12 on the rear side of the annealing furnace 10 can be rotated respectively to open the front and rear baffles 21 by a certain distance. After the left rotating handle 22 is rotated to the required angle (i.e., after the two baffles 21 are opened to the required distance), the left rotating handle 22 is positioned by the left positioning mechanism, so that the front and rear baffles 21 are always kept open at the required distance. After the glass strip 100 is pulled out of the annealing furnace 10, in order to ensure the forming quality of the glass and prevent the gas in the lower part of the annealing furnace 10 from rising to the upper part, the device is used to control the airflow. At this point, the distance between the two baffles 21 can be adjusted to reduce the gap. First, release the left positioning mechanism to position the left rotating handle 22, and then rotate the left rotating handles on both the front and rear sides to reduce the gap between the baffles on both the front and rear sides. After the gap between the two baffles on both the front and rear sides is adjusted to a suitable distance, the left positioning mechanism is used to lock the left rotating handle 22 in place. In actual production, there may be a mismatch between the output volume and the glass traction speed. If the output volume is too large, the glass ribbon may wrinkle. In this case, the left rotating handles on both the front and rear sides can be rotated back and forth to make the baffles 21 on both the front and rear sides continuously slap the glass ribbon against each other. Since the temperature of the glass ribbon is relatively high at this time, it is in a softened state. This operation can flatten the glass ribbon, allowing it to pass smoothly between the two baffles. Therefore, compared with the prior art, the airflow control device for flexible glass forming of the present invention can open the two baffles located on the front and rear sides at different angles according to different working conditions, thereby preventing the chimney effect in the annealing furnace. Furthermore, by reciprocating the rotation of the two left-hand handles, the wrinkled glass belt can be flattened, allowing it to be pulled out of the annealing furnace normally, thereby greatly improving the production quality and product yield of flexible glass.

[0029] Furthermore, such as Figure 1As shown, in this embodiment, the left positioning mechanism includes a left positioning support 23 fixedly disposed on the left outer wall of the annealing kiln body 10. The first end of the rotating shaft 20 passes through the left positioning support 23 and protrudes from the left positioning support 23. The rotating shaft 20 can rotate relative to the left positioning support 23. The left positioning support 23 is provided with a plurality of left positioning grooves (not shown in the figure). The plurality of left positioning grooves are arranged in an arc shape at equal angular intervals. Correspondingly, a left positioning rod 221 is movably connected to the left rotating handle 22. One end of the left positioning rod 221 is used to insert into the left positioning groove on the left positioning support 23. With this configuration, when the left rotating handle 22 drives the rotating shaft 20 to rotate at a suitable angle, thereby opening the two front and rear baffles 21 at a suitable distance, the left positioning rod 221, which is movably connected to the left rotating handle 22, can be inserted into the corresponding left positioning groove. Thus, the left rotating handle 22 is positioned by the cooperation between the left positioning rod 221 and the left positioning groove on the left positioning support 23, thereby positioning the rotating shaft 20. This design is not only simple in structure but also highly stable. Specifically, in this embodiment, the left rotating handle 22, the left positioning rod 221, and the left positioning support 231 are made of heat-resistant steel or ordinary carbon steel.

[0030] Preferably, in this embodiment, a handle is also provided at the end of the left-hand rotating handle 22. The handle is made of heat-resistant material so that it will not burn your hands when rotating the left-hand rotating handle 22.

[0031] Furthermore, in this embodiment, the left positioning rod 221 is threadedly connected to the left rotating handle 22. When it is necessary to insert the left positioning rod 221 into the left positioning groove on the left positioning support 23, the left positioning rod 221 can be rotated by screwing it to move it closer to the left positioning support 23, thereby inserting one end of the left positioning rod 221 into the left positioning groove on the left positioning support 23 by screwing.

[0032] Furthermore, in this embodiment, a corresponding angle value is provided next to each left positioning groove. This arrangement allows the operator to know and understand the angle of rotation of the left rotating handle 22 when it is rotated to different positions, and thus know and understand the opening and closing angle of the two baffles 21, which facilitates subsequent adjustments by the operator.

[0033] Furthermore, to improve the ease of rotating the shaft 20, such as... Figure 1As shown, in this embodiment, the second end of the rotating shaft 20 protrudes from the right side wall 10b of the annealing furnace body 10. A right rotating handle 24 is fixedly provided at the second end of the rotating shaft 20. Correspondingly, a right positioning mechanism is provided on the right side wall 10b of the annealing furnace body 10. This right positioning mechanism can position the right rotating handle 24 to a set angle. Through this structural design, that is, by providing a right rotating handle 24 at the second end, i.e., the right end, of the rotating shaft 20, when it is necessary to rotate the rotating shaft 20 to adjust the opening and closing angle between the two baffles 21, the left rotating handle 22 and the right rotating handle 24 can be operated simultaneously to rotate synchronously, thereby greatly improving the convenience of rotating the rotating shaft 20, making it easier and more convenient.

[0034] Furthermore, such as Figure 1 As shown, in this embodiment, the right positioning mechanism has the same structure as the left positioning mechanism. Specifically, the right positioning mechanism includes a right positioning support 25 fixedly mounted on the outer right side wall of the annealing furnace body 10. The second end of the rotating shaft 20 passes through and protrudes from the right positioning support 25, and the rotating shaft 20 can rotate relative to the right positioning support 25. The right positioning support 25 has multiple right positioning grooves (not shown in the figure), arranged in an arc shape at equal angular intervals. A right positioning rod 241 is movably connected to the right rotating handle 24, and one end of the right positioning rod 241 is inserted into the right positioning groove. The structure and working principle of the right positioning mechanism 25 are the same as those of the left positioning mechanism 23 described above, and therefore will not be repeated here. Preferably, in this embodiment, a corresponding angle value is also provided next to each right positioning groove.

[0035] Considering that the baffle plate 21 will expand due to the high temperature environment inside the annealing furnace 10 during operation, it is preferable that, Figure 1As shown, in this embodiment, the rotating shaft 20 includes a left rotating shaft 201, a right rotating shaft 202, and a connecting shaft 203. The left rotating shaft 201 is rotatably disposed on the left side wall 10a of the annealing kiln body 10, and the right rotating shaft 202 is rotatably disposed on the right side wall 10b of the annealing kiln body 10. The connecting shaft 203 is located inside the annealing kiln body. The first end of the connecting shaft 203 is fixedly connected to the left rotating shaft 201, and the second end of the connecting shaft 203 is provided with a keyway. Correspondingly, the right rotating shaft... A connecting key is provided on the connecting shaft 202. The keyway on the second end of the connecting shaft 203 cooperates with the connecting key on the right-turning shaft 202, and the length of the keyway along the axial direction of the connecting shaft 203 is greater than the length of the connecting key. Specifically, the baffle plate 21 is provided on the connecting shaft 203, and there is a set interval between the left side of the baffle plate 203 and the left inner wall of the annealing kiln body 10, and there is a set interval between the right side of the baffle plate 21 and the right inner wall of the annealing kiln body 10. With this structural design, when the temperature inside the annealing kiln 10 is too high, causing the connecting shaft 203 and the baffle plate 21 to expand, the second end of the connecting shaft 203 is connected to the right-turning shaft 202 by a key. Since the length of the keyway along the axial direction of the connecting shaft 203 is greater than the length of the key, the connecting shaft 203 will expand to the right relative to the right-turning shaft 202 when it expands. Thus, the clearance fit between the connecting key and the keyway can prevent the right-turning shaft 202 / left-turning shaft 201 from being pushed out of the right side wall 10b / left side wall 10a when the connecting shaft 202 expands. Furthermore, since there is a set gap between the left side of the baffle plate 21 and the left inner wall of the annealing kiln 10, and a set gap between the right side of the baffle plate 21 and the right inner wall of the annealing kiln 10, the baffle plate 21 can be prevented from expanding under hot conditions and being squeezed between the left and right inner walls of the annealing kiln 10, thus ensuring the service life of the baffle plate 21 and the safety of operation. Preferably, in this embodiment, the left rotating shaft 201, the right rotating shaft 202, the connecting shaft 203 and the baffle plate 21 are all made of heat-resistant steel.

[0036] Furthermore, in order to better improve the effect of airflow control, preferably, such as Figure 1 and Figure 2As shown, in this embodiment, a front baffle 101 and a rear baffle 102 are slidably provided at the bottom outlet of the annealing furnace body 10. The front baffle 101 and the rear baffle 102 can move closer to each other or further away from each other. With this structural design, when it is necessary to regulate the airflow, two baffles 21 can be used in conjunction with the front baffle 101 and the rear baffle 102. That is, in the initial stage of production, in order to ensure that the glass belt 100 can be pulled out from the annealing furnace body 10, the left and right rotating handles 22 and 24 of the first regulating component 11 on the front side of the annealing furnace body 10 and the left and right rotating handles 22 and 24 of the second regulating component 12 on the rear side are rotated. Then, the left and right rotating handles 22 and 24 are positioned by the left and right positioning mechanisms respectively, so as to open the front and rear baffles 21 to a larger angle (e.g., Figure 3 and Figure 4 (As shown), then slide the front baffle 101 and rear baffle 102 at the bottom of the annealing furnace body 10 to move the front baffle 101 and rear baffle 102 away from each other, so as to pull the front baffle 101 and rear baffle 102 apart by a certain distance; after the glass belt 100 is pulled out, in order to ensure the forming quality of the glass, the left rotating handle 22 and the right rotating handle 24 can be rotated to reduce the opening angle of the two baffles 21 (as shown). Figure 5 As shown), the front baffle 101 and the rear baffle 102 at the bottom of the sliding annealing furnace body 10 are brought closer to each other, so that the front baffle 101 and the rear baffle 102 are brought closer to the minimum distance that does not affect the actual production glass thickness.

[0037] Furthermore, in order to ensure stable and precise control of the opening distance between the front baffle 101 and the rear baffle 102 during each production run, preferably, in this embodiment, both the front baffle and the rear baffle are provided with a scale.

[0038] Furthermore, in this embodiment, both the front baffle 101 and the rear baffle 102 are provided with downwardly sloping chamfers on their sides where they are close to each other. This arrangement allows broken glass inside the annealing furnace 10 to slide down along these downwardly sloping chamfers. When it is necessary to clean the glass on the upper surfaces of the front baffle 101 and the rear baffle 102, the front baffle 101 and the rear baffle 102 can be opened relative to each other, and then a cleaning tool can be used to clean the glass on the upper surfaces of the front baffle 101 and the rear baffle 102.

[0039] like Figure 2As shown, in this embodiment, slide rails 103 are provided on both the front and rear sides of the bottom of the annealing furnace body 10, and the front baffle 101 and the rear baffle 102 are slidably disposed in the slide rails 103. Of course, in other optional embodiments, the front baffle 101 and the rear baffle 102 can also be connected to the slide rails 103 by a rolling method. More preferably, the front baffle 101 and the rear baffle 102 can be driven to move by an electric drive. Preferably, the front baffle 101 and the rear baffle 102 are made of carbon steel or heat-resistant steel.

[0040] Preferably, in this embodiment, an observation hole is provided on the annealing furnace body 10, so that the position and status of the glass strip and the baffle can be observed through the observation hole.

[0041] In summary, the airflow control device for flexible glass forming of this invention can open the two baffles located on the front and rear sides at different angles according to different working conditions, thereby preventing the chimney effect in the annealing furnace. Furthermore, by reciprocating the rotation of the two left-hand handles, wrinkled glass strips can be flattened, allowing them to be pulled out of the annealing furnace normally, thus greatly improving the production quality and yield of flexible glass. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0042] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An airflow control device for flexible glass forming, characterized in that, include: Annealing kiln body; The annealing furnace body is provided with a first regulating component and a second regulating component on its front and rear sides, respectively. Both the first regulating component and the second regulating component include: A rotating shaft is rotatably disposed inside the annealing kiln, and the first end of the rotating shaft protrudes from the left side wall of the annealing kiln. The portion of the rotating shaft located inside the annealing kiln is provided with a downwardly extending baffle plate. The first end of the rotating shaft is fixedly provided with a left rotating handle, and the left outer wall of the annealing kiln body is provided with a left positioning mechanism, which can position the left rotating handle to a set angle.

2. The airflow control device for flexible glass forming according to claim 1, characterized in that, The left positioning mechanism includes a left positioning support fixedly installed on the left outer wall of the annealing kiln body. The first end of the rotating shaft passes through the left positioning support and protrudes from the left positioning support. The rotating shaft can rotate relative to the left positioning support. The left positioning support is provided with a plurality of left positioning grooves. The plurality of left positioning grooves are arranged in an arc shape at equal angular intervals. A left positioning rod is movably connected to the left rotating handle. One end of the left positioning rod is used to insert into the left positioning groove.

3. The airflow control device for flexible glass forming according to claim 2, characterized in that, The left positioning rod is threadedly connected to the left rotating handle.

4. The airflow control device for flexible glass forming according to claim 2, characterized in that, Each of the left positioning grooves has a corresponding angle value next to it.

5. The airflow control device for flexible glass forming according to claim 1, characterized in that, The rotating shaft includes a left rotating shaft, a right rotating shaft, and a connecting shaft. The left rotating shaft is rotatably mounted on the left side wall of the annealing kiln body, and the right rotating shaft is rotatably mounted on the right side wall of the annealing kiln body. The connecting shaft is located inside the annealing kiln body. The first end of the connecting shaft is fixedly connected to the left rotating shaft, and the second end of the connecting shaft is provided with a keyway. The right rotating shaft is provided with a connecting key. The keyway and the connecting key cooperate with each other, and the length of the keyway along the axial direction of the connecting shaft is greater than the length of the connecting key. The baffle is disposed on the connecting shaft, and there is a predetermined interval between the left side of the baffle and the left inner wall of the annealing kiln body, and a predetermined interval between the right side of the baffle and the right inner wall of the annealing kiln body.

6. The airflow control device for flexible glass forming according to claim 1, characterized in that, The second end of the rotating shaft protrudes from the right side wall of the annealing kiln body. A right rotating handle is fixedly provided at the second end of the rotating shaft. A right positioning mechanism is provided on the right outer wall of the annealing kiln body. The right positioning mechanism can position the right rotating handle to a set angle.

7. The airflow control device for flexible glass forming according to claim 6, characterized in that, The right positioning mechanism includes a right positioning support fixedly installed on the outer right side wall of the annealing furnace body. The second end of the rotating shaft passes through the right positioning support and protrudes from the right positioning support. The rotating shaft can rotate relative to the right positioning support. The right positioning support is provided with multiple right positioning grooves. The multiple right positioning grooves are arranged in an arc shape at equal angular intervals. A right positioning rod is movably connected to the right rotating handle. One end of the right positioning rod is used to insert into the right positioning groove.

8. The airflow control device for flexible glass forming according to claim 1, characterized in that, The bottom outlet of the annealing kiln is provided with a front baffle and a rear baffle, which can move closer to or further away from each other.

9. The airflow control device for flexible glass forming according to claim 8, characterized in that, Both the front baffle and the rear baffle are equipped with scales.

10. The airflow control device for flexible glass forming according to claim 8, characterized in that, Both the front baffle and the rear baffle have downward-sloping chamfers on the sides that are close to each other.

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