A thin-walled aluminum profile anti-deformation rolling device

Abstract

This invention relates to the field of aluminum profile processing technology, and more particularly to a thin-walled aluminum profile anti-deformation rolling device, comprising: a frame as the main load-bearing body; a mounting frame fixedly connected to the worktable of the frame; two work rolls arranged symmetrically, each rotatably connected to the mounting frame, forming a rolling gap between the two rolls, with each work roll having an axially continuous internal structure forming a hollow airflow channel; and a transmission system installed inside the frame for driving the two work rolls to rotate synchronously in opposite directions. This invention utilizes a series-connected roller system circulating cooling assembly to allow cooling gas to flow sequentially through the inner cavities of the upper and lower work rolls, achieving synchronous isothermal cooling of the two rolls; eliminating the thermal convexity of the roll gap caused by the thermal difference between the upper and lower rolls; avoiding the lag in shape control caused by traditional independent cooling; effectively suppressing defects such as edge waviness and center waviness; and improving the rolling accuracy and straightness of thin-walled aluminum profiles.

Description

Technical Field

[0001] This invention relates to the field of aluminum profile processing technology, and in particular to a thin-walled aluminum profile anti-deformation rolling device. Background Technology

[0002] During the rolling process of aluminum alloy sheets, the rolls generate a large amount of heat due to the plastic deformation work of the metal and friction, resulting in a significant increase in the roll surface temperature. Because heat dissipation is poorer in the middle of the roll, a "thermal crown" typically forms, meaning the expansion in the middle of the roll is greater than at the edges, causing the actual roll gap to have a bulging distribution. This uneven roll gap directly leads to differences in the transverse reduction of the aluminum sheet, causing uneven elongation, ultimately manifesting as edge waviness, center waviness, or warping and other sheet shape defects, severely affecting the flatness and dimensional accuracy of the product.

[0003] To control the thermal deformation of rolls, existing technologies mostly employ emulsion spray cooling or in-roll water cooling. However, liquid cooling systems suffer from problems such as complex structure, easy contamination of strip surface, high emulsion maintenance costs, and difficulties in winter antifreeze treatment, making them particularly unsuitable for the production of high-end aluminum materials such as battery foil and electronic foil, which require high cleanliness. Furthermore, traditional cooling methods typically only cool individual rolls independently, lacking coordinated control of the thermal state between the upper and lower work rolls, making it difficult to achieve overall thermal balance of the roll system. This results in delayed shape control response and limited accuracy. To address these issues, recent research has attempted to introduce gas cooling technology, using compressed air or inert gas to cool the rolls. However, most solutions simply introduce gas into a single roll and then directly discharge it, resulting in low cooling efficiency, poor gas utilization, and an inability to effectively balance the temperature field distribution between the upper and lower rolls. Because the upper and lower rolls experience different heating conditions during rolling (e.g., the upper roll has longer contact time with the strip and a higher heat load), without a thermal coupling control mechanism, asymmetric roll gaps can still easily occur, inducing asymmetric shape defects such as unilateral waviness or warping.

[0004] Therefore, there is an urgent need for a new type of cooling device with a reasonable structure, high cooling efficiency, and the ability to coordinate the thermal state of the upper and lower rolls, so as to effectively reduce the temperature difference between the transverse and longitudinal sides of the roll system and significantly suppress the poor shape of aluminum sheets caused by thermal deformation. Summary of the Invention

[0005] In order to overcome the shortcomings of existing cooling technologies, which are difficult to achieve both efficient cooling and coordinated control of the thermal state of the upper and lower rolls, resulting in thin-walled aluminum profiles being prone to shape defects, this invention provides a thin-walled aluminum profile anti-deformation rolling device.

[0006] A thin-walled aluminum profile anti-deformation rolling device includes: a frame as the main load-bearing body; a mounting frame fixed to the worktable of the frame; two work rolls arranged symmetrically at different heights, both rotatably connected to the mounting frame, forming a rolling roll gap between the two rolls, and the interior of each work roll is axially connected to form a hollow air passage; a transmission system installed inside the frame for driving the two work rolls to rotate synchronously in opposite directions; an air supply system installed inside the frame for supplying cooling gas to the inner cavity of the work rolls; and a series-type roller circulation cooling assembly installed on the right side of the mounting frame for cooling the gas discharged from the upper work roll and then introducing it into the lower work roll to achieve synchronous temperature control of the upper and lower rolls.

[0007] As a further preferred embodiment, the series-connected roller circulating cooling assembly includes: an air guide shell, fixedly connected to the right side of the mounting frame, with the right ends of both working roller shafts extending into the air guide shell for rotatable connection; a high-efficiency heat exchange core, disposed in the middle of the air guide shell, with U-shaped return air channels symmetrically distributed along the upper and lower sides of the high-efficiency heat exchange core inside the air guide shell, used to guide the gas discharged from the upper working roller shaft to the lower working roller shaft; a porous mesh flow equalizer, fixedly installed in the inner cavity of each working roller shaft, used to evenly divide the incoming cooling gas into multiple fine streams; an air inlet, located at the inner left end of the upper working roller shaft; and an exhaust port, located at the inner left end of the lower working roller shaft.

[0008] As a further preferred embodiment, the gas supply system includes: a high-pressure gas supply unit, installed inside the frame; an air inlet pipe, connected to the left air outlet of the high-pressure gas supply unit; a first rotary sealing end cap, fixed to the upper end of the air inlet pipe, with the left end of the upper working roller shaft passing through the first rotary sealing end cap and achieving a rotary sealing fit, and the ventilation channel of the first rotary sealing end cap being connected to the corresponding air inlet.

[0009] As a further preferred embodiment, the air guide housing also integrates an adaptive temperature control system, which includes: a bypass mixing duct, vertically fixed inside the air guide housing, with its lower end connected to the upper air outlet inside the air guide housing; a cooling pipe, connected between the right side of the high-pressure air supply unit and the bypass mixing duct; a sliding bracket, slidably fitted onto the outside of the bypass mixing duct; a normally closed damper, installed on the sliding bracket, used to control the opening and closing of the cooling pipe; a corrugated expansion bladder, with its top inner side connected to the top inner side of the sliding bracket and its bottom connected to the top surface of the bypass mixing duct; and a temperature-sensing thermal probe, with its upper end fixed to the bottom of the corrugated expansion bladder and its lower end extending into the inner cavity of the bypass mixing duct, used to sense the airflow temperature and drive the corrugated expansion bladder to expand and contract.

[0010] As a further preferred embodiment, the top of the temperature-sensing and heat-conducting probe is open and communicates with the inner cavity of the corrugated expansion bladder, which is filled with a low-boiling-point working fluid; the top wall of the bypass mixing duct is provided with a through hole, and a dynamic sealing structure is provided at the through hole, so that the temperature-sensing and heat-conducting probe and the through hole form a sealed sliding fit.

[0011] As a further preferred embodiment, an intelligent lubrication system is also included, comprising: an oil reservoir mounted on the machine frame platform; a variable frequency oil pump mounted on the oil reservoir; upper and lower roller spray nozzles fixed to the top and front of the mounting frame, respectively, facing the upper and lower working roller shaft surfaces, and connected to the outlet of the variable frequency oil pump via pipelines; a heat collection manifold immersed in the oil reservoir; and a counter-current heat exchange fin assembly connected to the heat collection manifold, with its rear end extending into the air guide shell and located in the airflow channel directly below the high-efficiency heat exchange core, for recovering waste heat from the airflow to heat the lubricating oil.

[0012] As a further preferred embodiment, a tail gas guide support assembly is also included, which is located at the exhaust port of the lower working roller shaft. The tail gas guide support assembly includes: a second rotary sealing end cap, the left end of the lower working roller shaft passing through the second rotary sealing end cap to achieve a rotary sealing fit; a tail exhaust pipe connected to the second rotary sealing end cap; a flush support plate fixed to the frame, the top surface of which is coplanar with the top surface of the lower working roller shaft; and a negative pressure suction nozzle embedded in the flush support plate and connected to the tail exhaust pipe, used to guide the discharged gas to the bottom surface of the rolled aluminum plate.

[0013] As a further preferred embodiment, the transmission system includes: a drive motor installed inside the frame; two synchronous gears respectively fixed to the left ends of the two working roller shafts, and the two synchronous gears meshing with each other; and a belt pulley transmission assembly connected between the output shaft of the drive motor and the left end of the lower working roller shaft.

[0014] The present invention has the following advantages: By setting up a series-connected roller system circulation cooling assembly, the present invention allows cooling gas to flow sequentially through the inner cavity of the upper and lower working roller shafts, thereby achieving synchronous isothermal cooling of the two rollers; this structure effectively eliminates the difference in thermal convexity of the roller gap caused by the inconsistent thermal state of the upper and lower rollers, avoids the problem of lag in plate shape control caused by the traditional independent cooling method, significantly suppresses plate shape defects such as edge waviness and center waviness, and improves the rolling accuracy and straightness of thin-walled aluminum profiles.

[0015] This invention integrates a thermally sensitive adaptive temperature control system, which monitors the airflow temperature in real time through a temperature-sensing heat-conducting probe, and drives a normally closed damper to automatically adjust the amount of supplemental cooling air, forming a negative feedback mechanism of "the higher the temperature, the stronger the supplemental cooling". This design solves the problem of insufficient cooling capacity of the main heat exchanger under extreme conditions, ensures that the airflow temperature entering the lower roll is constant, maintains the dynamic balance of the temperature field between the upper and lower rolls, and improves the adaptability of the device to different rolling conditions.

[0016] This invention recovers exhaust waste heat to heat lubricating oil through counter-current heat exchange fins, achieving cascaded energy utilization; at the same time, the heat-exchanged gas is guided to the flush support plate for secondary air cooling of the rolled aluminum plate; this integrated design reduces the viscosity of the lubricating oil, improves the lubrication effect, and prevents thermal warping of the finished plate, thereby improving energy efficiency and further ensuring the quality of the plate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram from the first perspective of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram from the second perspective of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the mounting frame, working roller shaft, and air inlet pipe of the present invention.

[0020] Figure 4 This is a three-dimensional structural cross-sectional view of the components of the present invention, including the working roller shaft, the air guide shell, and the high-efficiency heat exchange core.

[0021] Figure 5 This is a three-dimensional structural diagram of the bypass mixing duct, cooling duct, and sliding support components of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the bypass mixing duct, temperature-sensing heat-conducting probe, and corrugated expansion bladder components of the present invention.

[0023] Figure 7 This is a three-dimensional structural diagram of the components of the present invention, including the oil storage tank, the upper roller spray nozzle, and the variable frequency oil pump.

[0024] Figure 8 This is a three-dimensional structural diagram of the components of the present invention, including the heat collection manifold, the counterflow heat exchange fin assembly, and the oil reservoir.

[0025] Figure 9 This is a three-dimensional structural diagram of the components of the present invention, including the tail exhaust pipe, the negative pressure suction nozzle, and the second rotary sealing end cap.

[0026] Wherein: 101-Frame, 102-High-pressure air supply unit, 103-Drive motor, 104-Mounting bracket, 105-Working roller shaft, 106-Inlet pipe, 1061-First rotary sealing end cap, 107-Synchronous gear, 108-Air guide shell, 109-High-efficiency heat exchange core, 110-Air inlet, 111-Porous mesh flow equalizer, 112-Exhaust port, 113-Belt pulley drive assembly, 201-Bypass mixing duct, 20 2-Cooling pipe, 203-Sliding bracket, 204-Temperature-sensing heat conduction probe, 205-Corrugated telescopic bladder, 206-Normally closed damper, 301-Oil tank, 302-Upper roller spray nozzle, 3021-Lower roller spray nozzle, 303-Variable frequency oil pump, 304-Counterflow heat exchange fin assembly, 305-Heat collection manifold, 401-Tail exhaust pipe, 402-Negative pressure suction nozzle, 403-Second rotary sealing end cap, 404-Flush support plate. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" 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 an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0028] Example 1: A thin-walled aluminum profile anti-deformation rolling device, the core structure of which includes a load-bearing body, a transmission system, an internal circulation air cooling system, an adaptive temperature control system, an intelligent lubrication system, and a tail air guide support assembly.

[0029] like Figures 1-4 As shown, specifically, the device includes a frame 101 as the main support, a mounting frame 104 is fixedly connected to the worktable of the frame 101, and work rollers 105 arranged symmetrically on the mounting frame 104 are rotatably connected to the mounting frame 104, forming a rolling gap between the two rollers for the passage of aluminum ingots.

[0030] The transmission system is installed inside the frame 101 and is used to drive the two work roller shafts 105 to rotate synchronously in opposite directions. Specifically, a synchronous gear 107 is fixed to the left end of each work roller shaft 105, and the two synchronous gears 107 mesh with each other to form a double-roller synchronous transmission pair. A drive motor 103 is installed inside the frame 101, and its output shaft is connected to the left end of the lower work roller shaft 105 through a coupling and belt pulley transmission assembly 113, which is used to drive the lower work roller shaft 105 to rotate and drive the upper work roller shaft 105 to rotate synchronously in opposite directions via the gear pair.

[0031] Each working roller shaft 105 is axially interconnected, forming a hollow air passage. An air supply system is located within the frame 101 to supply cooling gas to the interior of the working roller shaft 105. Specifically, a high-pressure air supply unit 102 is installed within the frame 101, with its left outlet connected to an inlet pipe 106. A first rotary sealing end cap 1061 is fixedly attached to the upper end of the inlet pipe 106, and the left end of the upper working roller shaft 105 passes through this end cap, achieving a rotary sealing fit. An air inlet 110 is provided at the inner left end of the upper working roller shaft 105, corresponding to the air passage of the end cap.

[0032] A series-connected roller circulation cooling assembly is provided on the right side of the mounting frame 104. This assembly cools the gas discharged from the upper working roller shaft 105 and guides it into the lower working roller shaft 105, achieving synchronous temperature control of the upper and lower rollers. The assembly includes a gas guide housing 108 fixed to the right side of the mounting frame 104, with the right ends of both working roller shafts 105 extending into the gas guide housing 108 for rotation. A high-efficiency heat exchange core 109 is located in the center of the gas guide housing 108, with U-shaped return air channels symmetrically distributed vertically along the core. A porous mesh flow equalizer 111 is fixedly installed inside each working roller shaft 105 to evenly divide the incoming cooling gas into multiple fine streams, ensuring uniform heat exchange around the roller body. An air inlet 110 is located at the inner left end of the upper working roller shaft 105, and an exhaust port 112 is located at the inner left end of the lower working roller shaft 105 for discharging gas.

[0033] To address the issue of excessive load on the main heat exchanger under extreme operating conditions, an adaptive temperature control system is integrated within the air guide shell 108. For example... Figures 4-6 As shown, the system includes a bypass mixing duct 201 vertically fixed inside the air guide housing 108, with its lower end connected to the upper air outlet inside the air guide housing 108. The right side of the high-pressure air supply unit 102 is connected to the bypass mixing duct 201 via a cooling supply pipe 202. A sliding bracket 203 is slidably fitted on the outside of the bypass mixing duct 201, and a normally closed damper 206 is installed on the sliding bracket 203 to control the opening and closing of the cooling supply pipe 202.

[0034] The top inner side of the sliding bracket 203 is connected to the top surface of the bypass mixing duct 201 via a corrugated expansion bladder 205. A through hole is provided in the top wall of the bypass mixing duct 201. The upper end of the temperature-sensing and heat-conducting probe 204 is fixed to the bottom of the corrugated expansion bladder 205, and the lower end passes through the through hole and extends into the inner cavity of the bypass mixing duct 201 to directly sense the temperature of the airflow inside the duct. The top of the temperature-sensing and heat-conducting probe 204 is open and communicates with the inner cavity of the corrugated expansion bladder 205, which is filled with a low-boiling-point working fluid. A dynamic sealing structure is provided at the through hole, allowing the temperature-sensing and heat-conducting probe 204 to form a sealed sliding fit with the through hole, ensuring the airtightness of the pipeline while allowing the temperature-sensing and heat-conducting probe 204 to move slightly up and down with the corrugated expansion bladder 205.

[0035] like Figure 7 and Figure 8 As shown, specifically, the frame 101 is equipped with an intelligent lubrication system for lubricating the work roller shaft 105 and recovering waste heat. This system includes an oil reservoir 301 and a variable frequency oil pump 303 mounted thereon. An upper roller spray nozzle 302 and a lower roller spray nozzle 3021 are fixedly attached to the top and front of the mounting bracket 104, respectively, facing the surfaces of the upper and lower work roller shafts 105 and connected to the outlet of the variable frequency oil pump 303 via pipelines.

[0036] A heat collection manifold 305 is submerged inside the oil tank 301, and a counter-current heat exchange fin assembly 304 is connected to it. The rear end of the counter-current heat exchange fin assembly 304 extends into the air guide shell 108 and is located in the airflow channel directly below the high-efficiency heat exchange core 109, for recovering waste heat from the airflow to heat the lubricating oil.

[0037] like Figure 9 As shown, specifically, a tail-end air guide support assembly is provided at the exhaust port 112 of the lower work roll shaft 105 for supporting and assisting in cooling the rolled aluminum sheet. This assembly includes a flush support plate 404 fixed to the frame 101, the top surface of which is coplanar with the top surface of the lower work roll shaft 105. A negative pressure suction nozzle 402 is embedded in the flush support plate 404, connected to the second rotary sealing end cap 403 via a tail-end exhaust pipe 401. The left end of the lower work roll shaft 105 passes through the second rotary sealing end cap 403, achieving a rotary sealing fit.

[0038] Working principle: The working process of this device includes five coordinated links: rolling transmission, internal circulation cooling, adaptive temperature control, waste heat recovery lubrication and tail auxiliary cooling.

[0039] The drive motor 103 is started, and its output shaft drives the lower work roll shaft 105 to rotate via the belt pulley transmission assembly 113. The synchronous gear 107 at the left end of the lower work roll shaft 105 meshes with the synchronous gear 107 at the left end of the upper work roll shaft 105, causing the upper work roll shaft 105 to rotate synchronously in the opposite direction. The aluminum ingot to be rolled is fed into the rolling gap formed by the two rolls from the front side, and undergoes plastic deformation under the action of the frictional traction force of the roll surface, and is rolled into an aluminum plate of the target thickness, and then conveyed backward along the flush support plate 404.

[0040] When the high-pressure gas supply unit 102 is started, the generated low-temperature gas is transported to the first rotary sealing end cover 1061 through the air inlet pipe 106, and injected into the air inlet 110 at the left end of the upper working roller shaft 105 through the air passage inside the end cover.

[0041] After the cold air enters the inner cavity of the upper working roll shaft 105, it flows through the fixed porous mesh flow equalizer 111 and is broken and reorganized into multiple micro jets, which carry out all-round convective heat exchange on the inner wall of the upper working roll shaft 105 and absorb the heat generated by rolling.

[0042] After absorbing heat, the airflow converges at the right end of the upper working roller shaft 105 and is discharged, entering the upper air passage of the air guide shell 108, and flowing through the high-efficiency heat exchange core 109 for forced heat exchange and cooling.

[0043] The cooled gas enters the lower air passage of the air guide housing 108 and is injected into the inner cavity of the lower working roller shaft 105 from the right end. It is then dispersed into a fine jet by the porous mesh flow equalizer 111 inside the lower working roller shaft 105, uniformly cooling the inner wall of the lower working roller shaft 105. After completing the secondary heat exchange, the gas is finally discharged from the exhaust port 112 at the left end of the lower working roller shaft 105.

[0044] This closed-loop circuit enables synchronous isothermal cooling of the upper working roller shaft 105 and the lower working roller shaft 105, eliminating the difference in thermal convexity of the roller gap caused by the inconsistent thermal state of the upper and lower working roller shafts 105, and effectively suppressing the lag in plate shape control.

[0045] When the heat load on the upper working roller shaft 105 surges, causing the airflow temperature to exceed the set threshold as it flows out from its right end and enters the upper air passage of the air guide housing 108, the high-temperature airflow directly extends to contact the temperature-sensing and heat-conducting probe 204 inside the pipe, heating the low-boiling-point working fluid filled inside and causing it to rapidly vaporize and expand.

[0046] The expansion pressure pushes the corrugated telescopic bladder 205 upward, lifting the sliding bracket 203 that is slidably sleeved on the outside of the bypass mixing duct 201. The upward movement of the sliding bracket 203 causes the normally closed damper 206 on it to open, opening the passage between the cooling supply pipe 202 and the bypass mixing duct 201. The low-temperature cold air generated by the high-pressure air supply unit 102 is directly injected into the bypass mixing duct 201 through the cooling supply pipe 202, and mixes with the high-temperature airflow from the upper working roller shaft 105 in the duct, forcibly reducing the temperature of the mixed air.

[0047] After being mixed and cooled, the gas is further processed by the high-efficiency heat exchange core 109 before entering the lower working roller shaft 105. This mechanism forms a negative feedback loop of "the higher the temperature, the stronger the cooling", ensuring that the airflow temperature entering the lower working roller shaft 105 is constant and maintaining the dynamic balance of the temperature field between the upper and lower working roller shafts 105.

[0048] The airflow, initially cooled by the high-efficiency heat exchange core 109, flows from the upper air passage of the air guide shell 108 to the lower air passage, passing through the counter-current heat exchange fin assembly 304 located directly below it. The remaining heat in the airflow is transferred to the heat collection manifold 305 through the fins, and is finally absorbed by the lubricating oil in the oil tank 301 submerged in the heat collection manifold 305.

[0049] Increased oil temperature reduces lubricating oil viscosity and improves low-temperature fluidity. The variable frequency oil pump 303 pumps the preheated lubricating oil according to operating conditions, spraying it through the upper roller spray nozzle 302 and the lower roller spray nozzle 3021 respectively. This precisely covers the roller surfaces and rolling zones of the upper and lower work roller shafts 105, reducing frictional heat generation and improving system efficiency.

[0050] The gas discharged from the exhaust port 112 of the lower working roller shaft 105 passes sequentially through the guide seal of the second rotary sealing end cover 403 and the conveying of the tail exhaust pipe 401, finally reaching the negative pressure suction nozzle 402 embedded in the flush support plate 404. The high-speed airflow is directionally ejected from the nozzle and acts directly on the bottom surface of the freshly rolled aluminum plate, rapidly cooling it a second time to prevent warping of the finished product and improve the plate shape quality.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A thin-walled aluminum profile anti-deformation rolling device, comprising: a frame (101) as the main load-bearing body; a mounting frame (104) fixedly connected to the worktable of the frame (101); two work rollers (105) arranged symmetrically in the upper and lower positions, both rotatably connected to the mounting frame (104), forming a rolling gap between the two rollers, and the interior of each work roller (105) is axially connected to form a hollow air passage; a transmission system installed in the frame (101) for driving the two work rollers (105) to rotate synchronously in opposite directions; characterized in that, It also includes: an air supply system, which is located inside the frame (101) and is used to supply cooling gas to the inner cavity of the working roller shaft (105); and a series roller system circulating cooling assembly, which is located on the right side of the mounting frame (104) and is used to cool the gas discharged from the upper working roller shaft (105) and introduce it into the lower working roller shaft (105) to achieve synchronous temperature control of the upper and lower rollers.

2. The anti-deformation rolling device for thin-walled aluminum profiles according to claim 1, characterized in that, The series-connected roller system circulating cooling assembly includes: an air guide shell (108), fixed to the right side of the mounting frame (104), with the right ends of the two working roller shafts (105) extending into the air guide shell (108) for rotatable connection; a high-efficiency heat exchange core (109), located in the middle of the air guide shell (108), with U-shaped return air channels symmetrically distributed along the upper and lower sides of the high-efficiency heat exchange core (109) to guide the gas discharged from the upper working roller shaft (105) to the lower working roller shaft (105); a porous mesh flow equalizer (111), fixedly installed in the inner cavity of each working roller shaft (105), to evenly divide the incoming cooling gas into multiple fine streams; an air inlet (110), located at the inner left end of the upper working roller shaft (105); and an exhaust port (112), located at the inner left end of the lower working roller shaft (105).

3. A thin-walled aluminum profile anti-deformation rolling device according to claim 2, characterized in that, The gas supply system includes: a high-pressure gas supply unit (102), which is installed inside the frame (101); an air inlet pipe (106), which is connected to the left air outlet of the high-pressure gas supply unit (102); a first rotary sealing end cover (1061), which is fixed to the upper end of the air inlet pipe (106), and the left end of the upper working roller shaft (105) passes through the first rotary sealing end cover (1061) and achieves a rotary sealing fit, and the ventilation channel of the first rotary sealing end cover (1061) is correspondingly connected to the air inlet (110).

4. A thin-walled aluminum profile anti-deformation rolling device according to claim 3, characterized in that, The air guide housing (108) also integrates an adaptive temperature control system, which includes: a bypass mixing duct (201), vertically fixed inside the air guide housing (108), with its lower end connected to the upper air outlet inside the air guide housing (108); a cooling pipe (202), connected between the right side of the high-pressure air supply unit (102) and the bypass mixing duct (201); a sliding bracket (203), slidably sleeved on the outside of the bypass mixing duct (201); and a normally closed damper (…). 206), installed on the sliding bracket (203), is used to control the opening and closing of the cooling pipe (202); the corrugated expansion bladder (205) has its top inner side connected to the top inner side of the sliding bracket (203) and its bottom connected to the top surface of the bypass mixing duct (201); the temperature-sensing and heat-conducting probe (204) has its upper end fixed to the bottom of the corrugated expansion bladder (205) and its lower end extended to the inner cavity of the bypass mixing duct (201), and is used to sense the airflow temperature and drive the corrugated expansion bladder (205) to expand and contract.

5. A thin-walled aluminum profile anti-deformation rolling device according to claim 4, characterized in that, The top of the temperature-sensing and heat-conducting probe (204) is open and communicates with the inner cavity of the corrugated telescopic bladder (205), which is filled with a low-boiling-point working fluid; the top wall of the bypass mixing duct (201) is provided with a through hole, and a dynamic sealing structure is provided at the through hole, so that the temperature-sensing and heat-conducting probe (204) and the through hole form a sealed sliding fit.

6. A thin-walled aluminum profile anti-deformation rolling device according to claim 5, characterized in that, It also includes an intelligent lubrication system, which includes: an oil tank (301) set on the table of the frame (101); a variable frequency oil pump (303) installed on the oil tank (301); an upper roller spray nozzle (302) and a lower roller spray nozzle (3021) respectively fixed to the top and front side of the mounting frame (104), facing the surface of the upper and lower working roller shafts (105), and connected to the outlet of the variable frequency oil pump (303) through pipelines; a heat collection manifold (305) immersed in the oil tank (301); and a counterflow heat exchange fin assembly (304) connected to the heat collection manifold (305), with its rear end extending into the air guide shell (108) and located in the airflow channel directly below the high-efficiency heat exchange core (109), for recovering the waste heat of the airflow to heat the lubricating oil.

7. A thin-walled aluminum profile anti-deformation rolling device according to claim 2, characterized in that, It also includes a tail gas guide support assembly, which is set at the exhaust port (112) of the lower working roller shaft (105). The tail gas guide support assembly includes: a second rotary sealing end cover (403), the left end of the lower working roller shaft (105) is inserted into the second rotary sealing end cover (403) and achieves a rotary sealing fit; a tail exhaust pipe (401), which is connected to the second rotary sealing end cover (403); a flush support plate (404), which is fixed to the frame (101) and its top surface is coplanar with the top surface of the lower working roller shaft (105); and a negative pressure suction nozzle (402), which is embedded in the flush support plate (404) and connected to the tail exhaust pipe (401) for guiding the discharged gas to the bottom surface of the rolled aluminum plate.

8. A thin-walled aluminum profile anti-deformation rolling device according to claim 1, characterized in that, The transmission system includes: a drive motor (103) installed inside the frame (101); two synchronous gears (107) respectively fixed to the left ends of the two working roller shafts (105), and the two synchronous gears (107) mesh with each other; and a belt pulley transmission assembly (113) connected between the output shaft of the drive motor (103) and the left end of the lower working roller shaft (105).

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