Conveying transition section cooling device for all-steel glass production

Abstract

The invention discloses a conveying transition section cooling device for all-steel glass production, and relates to the technical field of glass tempering. The conveying transition section cooling device for all-steel glass production comprises a heating conveying section, a cooling conveying section and a transition cooling section. The heating conveying section is fixedly arranged and used for conveying and heating glass. The cooling conveying section is fixedly arranged, is used for conveying and cooling the glass, and is arranged on the front side of the conveying direction of the heating conveying section. The transition cooling section is arranged between the heating conveying section and the cooling conveying section and comprises a first air knife and an air inlet pipe, the first air knife is fixedly arranged, one end of the air inlet pipe is communicated with an air inlet of the first air knife, and the other end of the air inlet pipe is communicated with an external fan. According to the glass pre-cooling device, when glass passes through the space between the heating conveying section and the cooling conveying section, the external fan provides wind power for the first air knife through the air inlet pipe, and then the first air knife can pre-cool the heated glass.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass toughening, and particularly relates to a conveying transition section cooling device for full-steel glass production. BACKGROUND

[0002] In the full-steel glass production process, after being heated in a heating furnace, the glass must be rapidly sent into a high-pressure cooling section for quenching.

[0003] At present, the area between the heating furnace and the cooling section on the full-steel glass processing production line is only a simple roller conveying area, which causes the glass to deform: the cold air in the workshop will be blown in disorder from both sides to the high-temperature glass, resulting in an increase in the temperature difference between the edge and the center of the glass, which will introduce an initial deformation force before toughening. Moreover, the hot air in the heating section will flow into the cooling section, and the cold air in the cooling section will also flow into the outlet of the heating furnace. The mixing and flow of the cold and hot air causes the glass to experience an uncontrollable and disordered pre-cooling process before entering the cooling section. As a result, the glass has already warped before formal quenching, and the subsequent high-pressure air cooling only solidifies or even enlarges the defect, causing a difficult-to-eliminate wavy deformation.

[0004] In view of the above problems, the present application provides a conveying transition section cooling device for full-steel glass production to solve the above problems. SUMMARY

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a conveying transition section cooling device for full-steel glass production, comprising a heating conveying section, a cooling conveying section and a transition cooling section, the heating conveying section is fixedly arranged, and the heating conveying section is used for conveying and heating the glass; the cooling conveying section is fixedly arranged, and the cooling conveying section is used for conveying and cooling the glass, and the cooling conveying section is arranged on the front side of the conveying direction of the heating conveying section; the transition cooling section is arranged between the heating conveying section and the cooling conveying section, and the transition cooling section comprises a first air knife and an air inlet pipe, the first air knife is fixedly arranged, one end of the air inlet pipe is communicated with the air inlet of the first air knife, and the other end of the air inlet pipe is communicated with an external air fan.

[0006] When the glass passes between the heating conveying section and the cooling conveying section, the external air fan provides air power for the first air knife through the air inlet pipe, and then the first air knife can pre-cool the heated glass.

[0007] Further, as a preferred, a pre-cooling roller is rotationally arranged at the rear end of the conveying direction of the cooling conveying section, two extension frames are symmetrically arranged at the rear end of the conveying direction of the cooling conveying section, both of the extension frames are fixedly arranged, and the left and right ends of the pre-cooling roller are respectively rotationally arranged in the two extension frames.

[0008] The pre-cooling roller is driven by a driving device in the cooling conveying section, and the glass slides on the pre-cooling roller.

[0009] Further, as a preferred, the first air knife is at least mirror image configured with two, two first air knives respectively acting on the upper and lower sides of the glass on the pre-cooling roller.

[0010] Further, as a preferred, the conveying transition section cooling device for all-steel glass production further comprises a height adjusting assembly, the height adjusting assembly comprises four U-shaped frames, which are respectively fixed to the upper and lower end faces of the two extension frames, a guide block is slidably arranged in the U-shaped frame, a threaded hole is formed in the guide block, a screw rod is assembled in the threaded holes of the left two guide blocks, and the screw rod penetrates the extension frame and the two U-shaped frames, two servo motors are fixed on the two U-shaped frames on the top, the output ends of the two servo motors are respectively fixed with two screw rods, and the first air knife is fixed between two guide blocks of the same height.

[0011] Further, as a preferred, the first air knife is rotatably provided with a second air knife, and the second air knife and the first air knife form an air outlet.

[0012] When the second air knife rotates under the action of external force, the size of the air outlet can change.

[0013] Further, as a preferred, the right side of the two second air knives respectively penetrates the two guide blocks and communicates with the air inlet pipe, and the left side of the two second air knives is respectively connected with two driving assemblies, the driving assembly comprises a stepping motor and a speed reduction gear set, the stepping motor is fixed on the guide block, a gear groove is formed in the guide block, the speed reduction gear set is arranged in the gear groove, the input end of the speed reduction gear set is fixed to the output end of the stepping motor, and the output end of the speed reduction gear set is fixed to the second air knife.

[0014] Further, as a preferred, the second air knife is slidably provided with a wind resistance block, and the elastic scraper is fixed on the peripheral wall of the wind resistance block.

[0015] Further, as a preferred, the left side wall of the first air knife is provided with an air inlet hole one, the left side wall of the second air knife is provided with an air inlet hole two, and the air inlet hole one and the air inlet hole two are intermittently communicated, a flow guide pipe is communicated between the air inlet hole one and the air inlet pipe, the middle part of the flow guide pipe is configured as a support cylinder, an air bag is arranged in the support cylinder, the two ends of the air bag are respectively communicated with the flow guide pipes at both ends of the support cylinder, and a one-way valve is installed in the flow guide pipe between the air bag and the air inlet pipe.

[0016] Further, as preferred, a limiting pillar is fixed on the wind resistance block.

[0017] Compared with the prior art, the application provides a conveying transition section cooling device for all-steel glass production, which has the following beneficial effects:

[0018] 1. By setting the transition cooling section, the airflow output by the first air knife can pre-cool the softened glass, and a thin and uniform compressive stress layer is first formed on the surface of the glass, which reduces the temperature difference between the edge and the center of the glass and avoids the introduction of initial deformation force before the glass is tempered. Moreover, the airflow output by the first air knife can form an air curtain in the transition section to isolate the heating conveying section and the cooling conveying section, thereby avoiding the mutual flow of cold and hot airflows and thus preventing the glass from deforming before formal quenching.

[0019] 2. By using the height adjusting assembly, the distance between the first air knife and the glass can be adjusted to change the output air pressure, which not only improves the strength of thin glass but also prevents thick glass from bursting.

[0020] 3. By driving the second air knife to rotate, the distance between the air outlets can be reduced, thereby the glass debris stuck in the air outlets can be crushed and broken to prevent the air outlets from being blocked, ensure the stability of the airflow of the air outlets, reduce the temperature difference between the edge and the center of the glass, and thus avoid pre-cooling failure.

[0021] 4. By switching the airflow channel, the direction of the air pressure in the second air knife can be changed, so that the air pressure in different directions in the second air knife can drive the wind resistance block to move, and thus the elastic scraper can automatically scrape and clean the broken glass powder, further prevent the air outlets from being blocked, avoid pre-cooling failure, and reduce the labor intensity without the need for regular manual cleaning of the air outlets. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the application;

[0023] Figure 2 is a schematic diagram of the transition cooling section structure of the application;

[0024] Figure 3 is a schematic diagram of the connection structure of the first air knife and the second air knife of the application;

[0025] Figure 4 is a schematic diagram of the first air knife structure of the application;

[0026] Figure 5 is a schematic diagram of the second air knife structure of the application;

[0027] Figure 6 is a schematic diagram of the driving assembly and the second air knife connection structure of the application;

[0028] Figure 7 Schematic diagram of the limiting support structure of the present application;

[0029] Figure 8 Schematic diagram of the air bag and its connecting structure of the present application.

[0030] In the figure: 1, cooling conveying section; 2, transition cooling section; 21, first air knife; 22, air inlet pipe; 23, pre-cooling roller; 24, extension frame; 31, U-shaped frame; 32, guide block; 33, screw rod; 34, servo motor; 41, second air knife; 42, air outlet; 43, stepping motor; 44, reduction gear set; 321, gear groove; 51, wind resistance block; 52, elastic scraper; 211, air inlet hole one; 411, air inlet hole two; 61, flow guide pipe; 62, support cylinder; 63, air bag; 64, one-way valve; 511, limiting support. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "include" and "have" and any variations thereof used in the specification and claims of the application and the drawings description are intended to cover the inclusion not the exclusion of one or more elements.

[0033] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the present application. For example, in the description of the present application, the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In addition, the terms "first", "second", and the like in the specification and claims of the present application or the above drawings are used to distinguish different objects, and are not used to describe a particular order, and can explicitly or implicitly include one or more of the features.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, the "connection" or "connecting" of mechanical structures can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by screws, bolts or other fixing members; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] With reference to Figures 1-8 The present application provides a technical solution:

[0037] A kind of full steel glass production with transition section cooling device for conveying, including heating conveying section, cooling conveying section 1 and transition cooling section 2, the heating conveying section (not shown in figure) fixed setting, the heating conveying section is used to convey and heat glass. The cooling conveying section 1 is fixedly arranged, the cooling conveying section 1 is used to convey and cool glass, and the cooling conveying section 1 is arranged at the front side of the conveying direction of the heating conveying section. The transition cooling section 2 is arranged between the heating conveying section and the cooling conveying section 1, the transition cooling section 2 includes first air knife 21 and air inlet pipe 22, the first air knife 21 is fixedly arranged, one end of the air inlet pipe 22 is communicated with the air inlet of the first air knife 21, and the other end of the air inlet pipe 22 is communicated with external fan.

[0038] Specifically, the glass is first heated to the softening point by the high temperature of the heating conveying section, the airflow output by the first air knife 21 in the transition section can pre-cool the softened glass, and a thin and uniform compressive stress layer is first formed on the surface of the glass. This process reduces the temperature difference between the edge and the center of the glass, and avoids introducing initial deformation force to the glass before tempering. At the same time, the airflow output by the first air knife 21 can form an air curtain in the transition section, which isolates the heating conveying section and the cooling conveying section 1, and avoids the mutual flow of cold and hot air streams, thereby avoiding deformation of the glass before formal quenching.

[0039] In addition, when the first air knife 21 is working, the air volume output by the first air knife 21 can make up for the insufficient air volume of the cooling conveying section, and at the same time, the cooling time of the whole glass can be shortened and the cooling efficiency can be improved.

[0040] As a preferred embodiment, a pre-cooling roller 23 is rotatably arranged at the rear end of the conveying direction of the cooling conveying section 1, and two extension frames 24 are symmetrically arranged at the rear end of the conveying direction of the cooling conveying section 1. Both of the extension frames 24 are fixedly arranged, and the left and right ends of the pre-cooling roller 23 are rotatably arranged in the two extension frames 24 respectively.

[0041] The pre-cooling roller 23 is driven by the driving device in the cooling conveying section 1, and the glass slides on the pre-cooling roller 23.

[0042] In the above, the pre-cooling roller 23 can operate synchronously with the cooling conveying section 1, and further can stably convey the heated glass into the cooling conveying section 1 for formal quenching.

[0043] As a preferred embodiment, the first air knife 21 is at least mirror-imaged configured with two, and the two first air knives 21 respectively act on the upper and lower sides of the glass on the pre-cooling roller 23.

[0044] For example, referring to Figure 2 , the two first air knives 21 are above and below the pre-cooling roller 23, so that the two first air knives 21 can complete the overall pre-cooling of the upper and lower surfaces of the glass.

[0045] In the above, the air outlet ends of the two first air knives 21 are opposite to the gaps of the pre-cooling rollers 23, so as to ensure that the first air knife 21 can directly blow the glass surface.

[0046] As a preferred embodiment, the cooling device for the conveying transition section of the all-steel glass production further comprises a height adjusting assembly, the height adjusting assembly comprises four U-shaped frames 31, which are respectively fixed to the upper and lower end faces of the two extension frames 24, a guide block 32 is slidably arranged in the U-shaped frame 31, a threaded hole is formed in the guide block 32, a screw rod 33 is assembled in the threaded holes of the left two guide blocks 32, and the screw rod 33 penetrates the extension frame 24 and the two U-shaped frames 31, two servo motors 34 are fixed on the two U-shaped frames 31 on the top, the output ends of the two servo motors 34 are respectively fixed with the two screw rods 33, and the first air knife 21 is fixed between the two guide blocks 32 at the same height.

[0047] In the above, the threaded holes of the two guide blocks 32 are opposite in threaded direction, and the threaded directions of the two sides of the screw rod 33 are opposite.

[0048] First of all, it needs to be pointed out that the thickness of the glass is different, and the required cooling air pressure is also different. For thin glass, in order to reduce the surface temperature below the glass strain point and solidify in a very short time, a high air pressure must be used for rapid cooling. If the air pressure is insufficient, the cooling is too slow, and the temperature difference between the inner and outer layers is not enough, so that enough compressive stress cannot be formed, resulting in insufficient glass tempering and insufficient strength. For thick glass, the destructive stress caused by the large temperature difference between the inside and outside may cause explosion, so low air pressure is required for cooling.

[0049] Therefore, when pre-cooling glass of different thickness, the distance between the first air knife 21 and the glass needs to be changed. Specifically, please refer to Figure 2 :

[0050] For thin glass: control the two servo motors 34 to start synchronously and drive the two screws 33 to rotate clockwise, so that the two guide blocks 32 on the left and right sides can move downward synchronously, forcing the distance between the first air knife 21 and the glass to decrease, the airflow dynamic pressure loss to be smaller, and the wind pressure to be larger, thus ensuring that the thin glass can form sufficient surface compressive stress.

[0051] For thick glass: control the two servo motors 34 to start synchronously and drive the two screws 33 to rotate counterclockwise, so that the two guide blocks 32 on the left and right sides can move upward synchronously, forcing the distance between the first air knife 21 and the glass to increase, the airflow dynamic pressure loss to be larger, and the wind pressure to be smaller, thus avoiding the generation of destructive stress due to excessive temperature difference between the inside and outside, which can cause explosion.

[0052] Therefore, when pre-cooling glass of different thickness, by adjusting the height adjustment assembly, the distance between the first air knife 21 and the glass can be changed, and the output wind pressure can be changed, which not only can improve the strength of thin glass, but also can prevent thick glass from exploding.

[0053] As a preferred embodiment, the first air knife 21 is rotatably provided with a second air knife 41, and the second air knife 41 and the first air knife 21 form an air outlet 42.

[0054] It should be noted that, generally, the air outlet end of the air knife is usually a very narrow gap (usually only 1-3 mm wide), which is easy to be blocked by a piece of debris of appropriate size or a particle. However, a part of the glass raw material is unqualified, which causes the glass to have micro-cracks in the heating and conveying section, and then the local explosion is easy to occur. The size of the debris varies, and the debris will be brought out of the heating and conveying section by the roller and cause the debris to splash. In addition, after cutting, the edge of the glass has a small amount of debris that has not completely fallen off, and the falling off during the vibration of the roller and the heating process will also cause the debris to splash. These splashed glass debris is easy to block the air outlet end of the air knife, causing the output airflow to be blocked, damaging the stability of the airflow, and unable to reduce the temperature difference between the edge and the center of the glass, thus causing the pre-cooling to fail.

[0055] Therefore, the rotatable second air knife 41 can effectively avoid the above situation. Please refer to Figures 3-5 :

[0056] Under the driving of external force, the second air knife 41 rotates clockwise, the distance between the air outlets 42 is reduced, and the glass debris stuck in the air outlets 42 is crushed, preventing the air outlets 42 from being blocked by the glass debris, ensuring the stable airflow of the air outlets 42, reducing the temperature difference between the edge and the center of the glass, and avoiding the failure of pre-cooling.

[0057] As a preferred embodiment, the right side of each of the two second air knives 41 penetrates through the two guide blocks 32 and communicates with the air inlet pipe 22, and the left side of each of the two second air knives 41 is connected with a driving assembly, the driving assembly comprises a stepper motor 43 and a speed reduction gear set 44, the stepper motor 43 is fixed on the guide block 32, a gear groove 321 is formed in the guide block 32, the speed reduction gear set 44 is arranged in the gear groove 321, the input end of the speed reduction gear set 44 is fixed to the output end of the stepper motor 43, and the output end of the speed reduction gear set 44 is fixed to the second air knife 41.

[0058] It should be explained that the stepper motor 43 can be bidirectionally driven, and can be precisely controlled to drive and lock at a certain angle, and the internal structure and operating principle of the stepper motor 43 are prior art, which will not be described here.

[0059] For details, please refer to Figure 6 When the stepper motor 43 is started in the forward direction, the second air knife 41 can be driven to rotate counterclockwise by the speed reduction gear set 44, the distance between the air outlets 42 is reduced, and the crushing of the glass debris is completed, and conversely, when the stepper motor 43 is started in the reverse direction, the second air knife 41 can be driven to rotate clockwise by the speed reduction gear set 44, and the distance between the air outlets 42 returns to the initial value.

[0060] The use of the speed reduction gear set 44 can reduce the rotation angle of the second air knife 41, that is, when crushing the glass debris, the distance change value of the air outlet 42 is 0.5-1mm, avoiding the secondary spatter of the glass debris caused by excessive crushing, and avoiding damage to the equipment.

[0061] As a preferred embodiment, a wind resistance block 51 is slidably arranged in the second air knife 41, and an elastic scraper 52 is fixed on the peripheral wall of the wind resistance block 51.

[0062] When the wind resistance block 51 slides in the second air knife 41, the elastic scraper 52 can clean the glass debris adhered to the air outlets 42, prevent the air outlets 42 from being blocked by the glass debris, and avoid the glass debris being blown to the glass surface during the cooling process.

[0063] As a preferred embodiment, the left side wall of the first air knife 21 is provided with an air inlet hole one 211, the left side wall of the second air knife 41 is provided with an air inlet hole two 411, and the air inlet hole one 211 and the air inlet hole two 411 are intermittently communicated, the air inlet hole one 211 and the air inlet pipe 22 are communicated with a flow guide pipe 61, the middle part of the flow guide pipe 61 is configured as a supporting cylinder 62, the supporting cylinder 62 is provided with an air bag 63, the two ends of the air bag 63 are communicated with the flow guide pipe 61 at the two ends of the supporting cylinder 62, and a one-way valve 64 is installed in the flow guide pipe 61 between the air bag 63 and the air inlet pipe 22.

[0064] For example, in combination with Figures 6-8 , as follows:

[0065] The glass pre-cooling process section: the air inlet pipe 22 is air inlet, part of the airflow enters the second air knife 41, under the action of wind pressure, the wind resistance block 51 is always at the inner left end of the second air knife 41, another part of the airflow will enter the flow guide pipe 61, and the air inlet hole one 211 and the air inlet hole two 411 are in a staggered state, that is, they are not communicated, so under the action of wind pressure, the air bag 63 is in an inflated state.

[0066] After the glass pre-cooling process is completed: the air inlet pipe 22 stops air inlet, the wind pressure on the right side of the wind resistance block 51 disappears, at this time the stepping motor 43 is started in the forward direction, the spacing of the air outlets 42 is reduced, the second air knife 41 rotates counterclockwise by a certain angle, the spacing of the air outlets 42 is reduced, the glass debris clamped in the air outlets 42 is broken, at the same time, the air inlet hole one 211 and the air inlet hole two 411 are communicated, and the air bag 63 in the inflated state releases airflow, due to the blocking effect of the one-way valve 64, the airflow released by the air bag 63 enters the second air knife 41, under the pushing action of the airflow, the wind resistance block 51 drives the elastic wiper 52 to move from left to right, and the elastic wiper 52 can automatically clean the glass powder residues on the inner wall of the air outlet 42.

[0067] By switching the airflow channel, the direction of the wind pressure in the second air knife 41 can be changed, so that the wind resistance block 51 can be driven to move in different directions in the second air knife 41, and the elastic wiper 52 can automatically remove and clean the glass powder after breaking, further preventing the air outlet 42 from being blocked, avoiding pre-cooling failure, and without the need for manual regular cleaning of the air outlet 42, reducing labor intensity.

[0068] As a preferred embodiment, the wind resistance block 51 is fixed with a limiting pillar 511, which can prevent the wind resistance block 51 from passing through the air inlet hole one 211 and the air inlet hole two 411.

[0069] The specific operation is as follows:

[0070] When the first batch of thickness uniform glass is processed, first, the external fan is started, the wind resistance block 51 is moved to the left end of the second air knife 41, and the contaminants in the second air knife 41 are removed, then the driving device of the heating conveying section and the cooling conveying section 1 is started, the glass steel processing is started, and the air flow output from the air outlet 42 can pre-cool the glass in the transition section. When the glass is completed, the driving device of the heating conveying section and the cooling conveying section 1 is closed, and the external fan is closed, then the two stepping motors 43 are synchronously driven in the positive direction, the distance between the air outlets 42 is reduced, the glass slag splashed into the air outlet 42 is instantaneously extruded and broken, and then the elastic wiper 52 automatically cleans the residual glass powder on the inner wall of the air outlet 42.

[0071] When the second batch of thickness uniform glass (different from the first batch of glass thickness) is processed, first, the two servo motors 34 are synchronously started, the distance between the two first air knives 21 is adjusted, and then the above-mentioned first batch of thickness uniform glass steel processing steps are repeated.

[0072] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A cooling device for a conveying transition section in all-steel glass production, characterized in that: include: A heating conveying section is fixedly installed and is used to convey and heat the glass. A cooling conveying section (1) is fixedly installed. The cooling conveying section (1) is used to convey and cool the glass, and the cooling conveying section (1) is located in front of the conveying direction of the heating conveying section. The transition cooling section (2) is located between the heating conveying section and the cooling conveying section (1). The transition cooling section (2) includes a first air knife (21) and an air inlet pipe (22). The first air knife (21) is fixedly installed. One end of the air inlet pipe (22) is connected to the air inlet of the first air knife (21), and the other end of the air inlet pipe (22) is connected to an external fan. When the glass passes between the heating conveying section and the cooling conveying section, the external fan provides airflow to the first air knife (21) through the air inlet pipe (22), thereby enabling the first air knife (21) to pre-cool the heated glass.

2. The cooling device for the conveying transition section in all-steel glass production according to claim 1, characterized in that: The cooling conveying section (1) is provided with a pre-cooling roller (23) at the rear end of the conveying direction. The cooling conveying section (1) is symmetrically arranged with two extension frames (24) at the rear end of the conveying direction. Both extension frames (24) are fixedly set, and the left and right ends of the pre-cooling roller (23) are respectively fitted and rotatably set in the two extension frames (24). The precooling roller (23) is driven by a drive device in the cooling conveying section (1), and the glass is slidably disposed on the precooling roller (23).

3. A cooling device for a conveying transition section in all-steel glass production according to claim 2, characterized in that: There are at least two first air knives (21) arranged in a mirror image, and the two first air knives (21) act on the upper and lower sides of the glass on the precooling roller (23) respectively.

4. A cooling device for a conveying transition section in all-steel glass production according to claim 2, characterized in that: The cooling device for the conveying transition section of the all-steel glass production also includes a height adjustment component. The height adjustment component includes a U-shaped frame (31), of which four are configured and fixed to the upper and lower end faces of the two extension frames (24). A guide block (32) is slidably arranged in the U-shaped frame (31). A threaded hole is opened in the guide block (32). A screw (33) is installed in the threaded hole of the two guide blocks (32) on the left side. The screw (33) passes through the extension frame (24) and the two U-shaped frames (31). A servo motor (34) is fixed on the two U-shaped frames (31) at the top. The output ends of the two servo motors (34) are fixed to the two screws (33) respectively. The first air knife (21) is fixed between the two guide blocks (32) at the same height.

5. A cooling device for a conveying transition section in all-steel glass production according to claim 4, characterized in that: A second air knife (41) is rotatably disposed inside the first air knife (21), and an air outlet (42) is formed between the second air knife (41) and the first air knife (21). When the second air knife (41) rotates under the action of external force, the size of the air outlet (42) can change.

6. A cooling device for a conveying transition section in all-steel glass production according to claim 5, characterized in that: The two second air blades (41) pass through the two guide blocks (32) on their right sides and are connected to the air inlet pipe (22). The two second air blades (41) are connected to two drive components on their left sides. The drive components include a stepper motor (43) and a reduction gear set (44). The stepper motor (43) is fixed on the guide block (32). A gear groove (321) is opened in the guide block (32). The reduction gear set (44) is set in the gear groove (321). The input end of the reduction gear set (44) is fixed to the output end of the stepper motor (43). The output end of the reduction gear set (44) is fixed to the second air blade (41).

7. A cooling device for a conveying transition section in all-steel glass production according to claim 5, characterized in that: A wind resistance block (51) is slidably disposed inside the second air knife (41), and an elastic scraper (52) is fixed on the peripheral wall of the wind resistance block (51).

8. A cooling device for a conveying transition section in all-steel glass production according to claim 6, characterized in that: An air inlet hole 1 (211) is provided on the left side wall of the first air knife (21), and an air inlet hole 2 (411) is provided on the left side wall of the second air knife (41). The air inlet hole 1 (211) and the air inlet hole 2 (411) are intermittently connected. A guide pipe (61) is connected between the air inlet hole 1 (211) and the air inlet pipe (22). The middle part of the guide pipe (61) is configured as a support cylinder (62). An air bag (63) is provided inside the support cylinder (62). The two ends of the air bag (63) are respectively connected to the guide pipes (61) at both ends of the support cylinder (62). A one-way valve (64) is installed in the guide pipe (61) between the air bag (63) and the air inlet pipe (22).

9. A cooling device for a conveying transition section in all-steel glass production according to claim 7, characterized in that: A limit support (511) is fixed on the wind resistance block (51).

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