Online quenching device for aluminum profile

Abstract

The utility model relates to an aluminum profile on-line quenching device which comprises a conveying assembly, a first cooling assembly and a second cooling assembly, and the conveying assembly is used for conveying aluminum profiles extruded and formed by an extruding machine in the first direction; the first cooling assembly comprises a first cooling box, a first cover covering the upper portion of the first cooling box and a water mist cooling nozzle and / or an air cooling spray head and is used for conducting pre-cooling quenching on the aluminum profile. The second cooling assembly is located on the downstream of the first cooling assembly and comprises a second cooling box and a second cover covering the second cooling box, and the second cooling box is used for conducting water soaking forced cooling quenching on the aluminum profile; the second cover is provided with a water inlet. According to the utility model, the aluminum profile is firstly subjected to water mist cooling and / or air cooling, so that slow cooling above a quenching sensitive temperature interval is realized; and then the aluminum profile is subjected to soaking cooling, rapid cooling in a quenching sensitive interval is achieved, residual stress is effectively controlled, and meanwhile the mechanical property of the aluminum profile is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum profile production, in particular to an aluminum profile online quenching device. Background Art

[0002] Aluminum alloy is lightweight, corrosion-resistant and highly pliable, making it an indispensable material in various industries, and is widely used in aerospace, construction, automobiles, machinery manufacturing, ships and other fields. Aluminum profiles are mostly formed by extrusion. Aluminum profiles coming out of the extruder have a high temperature and need to be cooled to improve their mechanical strength and performance.

[0003] In the prior art, online air-cooled quenching is usually adopted. For aluminum profiles with low quenching sensitivity, uniform wall thickness and simple structure, air-cooled quenching can basically meet the production needs. However, for aluminum profiles with high quenching sensitivity, thick wall thickness and asymmetric and complex cross-section, simple air-cooled quenching often causes problems such as insufficient quenching and deformation after quenching. The existing online quenching device cannot use different cooling intensities based on the quenching sensitivity of different aluminum alloys to perform reasonable online quenching treatment; it is impossible to accurately control the cooling rate to suppress the deformation of the aluminum alloy. Utility Model Content

[0004] The utility model provides an online quenching device for aluminum profiles, which is used to solve the technical problem that the online quenching device in the prior art cannot use different cooling intensities to perform reasonable online quenching treatment based on the quenching sensitivity of different aluminum alloys, resulting in poor mechanical strength and performance of the aluminum alloy.

[0005] The utility model provides an aluminum profile online quenching device, comprising:

[0006] A conveying assembly, used for conveying the aluminum profile extruded by the extruder along a first direction;

[0007] A first cooling assembly comprises a first cooling box and a first cover, wherein the first cover is covered on the top of the first cooling box; at least one of the bottom of the first cooling box and the first cover is provided with a water mist cooling nozzle and / or an air cooling nozzle for pre-cooling and quenching the aluminum profile; and,

[0008] a second cooling assembly, which is arranged adjacent to the first cooling assembly along the first direction and is located downstream of the first cooling assembly; the second cooling assembly comprises a second cooling box and a second cover, the second cooling box is used to immerse the aluminum profile in water for strong cooling and quenching; both ends of the second cooling box along the first direction are provided with openings, the openings are used to pass the aluminum profile; the second cover is covered on the top of the second cooling box, and the second cover is provided with a water inlet;

[0009] The first direction refers to the conveying direction of the profile.

[0010] Furthermore, the second cooling assembly further comprises a water collecting box, the water collecting box is arranged outside the second cooling box, and a gap is provided between the side walls of the water collecting box and the second cooling box along the first direction; the water collecting box is provided with a first water outlet;

[0011] The second cooling box is provided with a second water outlet, and the second water outlet is communicated with the water collecting box.

[0012] Furthermore, the second cooling box is provided with notches at both ends along the first direction, the notches are provided with baffles, and the openings are provided on the baffles.

[0013] Furthermore, the inner wall of the notch is provided with a groove, the grooves are arranged relatively along a second direction, and the baffle is clamped in the groove; wherein the second direction is perpendicular to the first direction.

[0014] Furthermore, the online quenching device also includes a first temperature sensor, a second temperature sensor and a third temperature sensor, the first temperature sensor and the second temperature sensor are respectively located at the two ends of the first cooling box along the first direction; the third temperature sensor is located at one end of the second cooling box away from the first cooling box; the first temperature sensor is used to detect the first temperature of the aluminum profile before quenching, the second temperature sensor is used to detect the second temperature of the aluminum profile after pre-cooling and quenching, and the third temperature sensor is used to detect the third temperature of the aluminum profile after strong cooling and quenching.

[0015] Furthermore, the conveying assembly includes a supporting frame and rollers, the rollers are pivotally connected to the supporting frame, there are a plurality of rollers and the rollers are spaced apart along the first direction, and the plurality of rollers are used to support the aluminum profile.

[0016] Furthermore, the support frame is fixedly provided with a first bracket, a second bracket and a third bracket, the first temperature sensor is fixedly provided on the first bracket; the second temperature sensor is fixedly provided on the second bracket; and the third temperature sensor is fixedly provided on the third bracket.

[0017] Furthermore, the support frame passes through the first cooling box and the water collecting box, and part of the support frame is located between the side walls of the water collecting box and the second cooling box.

[0018] Furthermore, the water inlet is connected to a water inlet pipe, the water inlet pipe is connected to a water storage tank, the water inlet pipe is provided with a first flow meter and a first water thermometer, the first flow meter is used to detect the inlet water flow rate, and the first water thermometer is used to detect the inlet water temperature; the first water outlet is connected to a water outlet pipe, the water outlet pipe is provided with a second flow meter and a second water thermometer, the second flow meter is used to detect the outlet water flow rate, and the second water thermometer is used to detect the outlet water temperature.

[0019] Furthermore, a stirrer is provided in the second cooling box, and the stirrer is used to homogenize the temperature of cooling water in the second cooling box.

[0020] Further, the cross-sectional shape of the air-cooling nozzle is rectangular, and the air-cooling nozzle is provided in plurality and arranged at intervals along the first direction;

[0021] The utility model provides an aluminum profile online quenching device, which has at least the following beneficial technical effects:

[0022] (1) The utility model provides an online quenching device for aluminum profiles, which first performs water mist cooling and / or air cooling on the aluminum profile to achieve slow cooling of the aluminum profile above the quenching sensitive temperature range; then immerses the aluminum profile in water to achieve rapid cooling of the aluminum profile in the quenching sensitive range to prevent rapid decomposition of the supersaturated solid solution; effectively controls residual stress while improving the mechanical properties of the aluminum profile; in addition, compared with offline quenching, it makes full use of the waste heat generated by extrusion and directly performs quenching after extrusion, which simplifies the process, saves energy, improves efficiency, shortens the production cycle, and reduces costs, thus having important economic benefits.

[0023] (2) The utility model provides an online quenching device for aluminum profiles. By setting openings on the baffle, the device is suitable for profiles with different cross-sectional shapes or different cross-sectional sizes. If the aluminum profiles to be quenched online are different, only the corresponding baffle needs to be replaced, thereby improving the practicality of the second cooling box.

[0024] (3) The utility model provides an online quenching device for aluminum profiles. By setting a first temperature sensor, a second temperature sensor and a third temperature sensor, it is convenient to detect the temperature of the aluminum profile before and after pre-cooling quenching and after strong cooling quenching in real time, and adjust the cooling rate or cooling intensity based on the actual temperature, so as to achieve precise control of the cooling rate or cooling intensity of the aluminum profile, reduce the deformation of the aluminum alloy, and improve the mechanical strength and performance of the aluminum profile.

[0025] (4) The utility model provides an online quenching device for aluminum profiles, which supports the aluminum profiles by setting a conveying component to prevent the aluminum profiles from bending and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An axial schematic diagram of an online quenching device for aluminum profiles provided in an embodiment of the utility model;

[0027] Figure 2 for Figure 1 The middle circle shows a partial enlarged schematic diagram of part B;

[0028] Figure 3 for Figure 2 The middle circle shows a partial enlarged schematic diagram of part C;

[0029] Figure 4 A schematic diagram of a front view of an online quenching device for aluminum profiles provided in an embodiment of the utility model;

[0030] Figure 5 for Figure 4 AA cross-sectional structural diagram;

[0031] Figure 6 for Figure 5 The middle circle shows a partial enlarged schematic diagram of the portion D;

[0032] Description of reference numerals:

[0033] 10. Aluminum profile; 20. Conveying assembly; 210. Carrying frame; 211. First bracket; 212. Second bracket; 213. Third bracket; 214. First temperature sensor; 215. Second temperature sensor; 216. Third temperature sensor; 220. Roller; 30. First cooling assembly; 310. First cooling box; 320. First cover; 330. Water mist cooling nozzle; 340. Air cooling nozzle; 40. Second cooling assembly; 410. Second cooling box; 411. Notch; 412. Groove; 413. Baffle; 414. Opening; 415. Partition; 416. Agitator; 420. Second cover; 430. Water collecting tank. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1 —6 The specific embodiments of the present invention are described in detail.

[0035] In the present invention, the terms "connection" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated structure.

[0036] In the present invention, terms such as "inside", "outside", "upper" and "lower" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0037] The utility model provides an online quenching device for aluminum profiles, see attached Figure 1 - Figure 3 The aluminum profile online quenching device comprises a conveying assembly 20, a first cooling assembly 30 and a second cooling assembly 40, wherein the conveying assembly 20 is used to convey the aluminum profile 10 extruded by the extruder along a first direction; the first cooling assembly 30 comprises a first cooling box 310 and a first cover 320, and the first cover 320 is covered on the top of the first cooling box 310; at least one of the bottom of the first cooling box 310 and the first cover 320 is provided with a water mist cooling nozzle 330 and / or an air cooling nozzle 340, which is used to pre-cool and quench the aluminum profile 10; the second cooling assembly 40 is used to convey the aluminum profile 10 extruded by the extruder along a first direction; the first cooling assembly 30 comprises a first cooling box 310 and a first cover 320, and the first cover 320 is covered on the top of the first cooling box 310; at least one of the bottom of the first cooling box 310 and the first cover 320 is provided with a water mist cooling nozzle 330 and / or an air cooling nozzle 340, which is used to pre-cool and quench the aluminum profile 10; The component 40 is arranged adjacent to the first cooling component 30 along the first direction and is located downstream of the first cooling component 30; the second cooling component 40 includes a second cooling box 410 and a second cover 420, and the second cooling box 410 is used for immersing the aluminum profile 10 in water for strong cooling and quenching; the second cooling box 410 is provided with openings 414 at both ends along the first direction, and the openings 414 are used to pass the aluminum profile 10; the second cover 420 covers the top of the second cooling box 410, and the second cover 420 is provided with a water inlet; wherein, the first direction refers to the conveying direction of the aluminum profile 10.

[0038] It should be noted that the cross-sectional shape and size of the opening 414 are consistent with the cross-sectional shape and size of the profile.

[0039] It should be noted that the cooling rate of water mist cooling and air cooling is lower than that of water immersion cooling.

[0040] It should be noted that online quenching combines the extrusion process, solid solution and quenching, making full use of the waste heat generated by extrusion and quenching directly after extrusion. It can simplify the process, save energy, improve efficiency, shorten the production cycle, reduce costs, and has important economic benefits.

[0041] Different aluminum alloys have different quenching sensitivities. Quenching sensitivity refers to the stability of the supersaturated solid solution of the aluminum alloy during the quenching process and the difficulty of its precipitation. It is used to characterize the sensitivity of the decomposition process of the supersaturated solid solution of the heat-treatable and strengthened aluminum alloy during the solution quenching process to the influence of the quenching cooling rate.

[0042] It should be noted that the time-temperature-performance curve TTP curve is C-shaped. For the same alloy, the incubation period is the shortest at the nose temperature, the supersaturated solid solution is the most unstable, the precipitation rate is the fastest, and the quenching sensitivity of the aluminum alloy is the highest; above or below the quenching sensitive temperature range, the incubation period is longer, and the quenching sensitivity of the aluminum alloy is lower. In the online quenching process of the aluminum profile 10, in order to minimize the residual stress, the aluminum alloy should be slowly cooled to the upper limit temperature of the quenching sensitive temperature range of the TTP curve, and then quickly pass through the quenching sensitive temperature range at a certain cooling rate. As long as the cooling time is less than the time required for the supersaturated solid solution to undergo precipitation, the adverse effects on the alloy properties can be minimized.

[0043] In the embodiment of the utility model, the temperature of the extruded aluminum profile 10 is higher than the upper limit temperature of the quenching sensitive temperature range corresponding to the aluminum profile 10, and is transported to the first quenching component for water mist cooling and / or wind cooling, and the temperature of the aluminum profile 10 is slowly cooled to the upper limit temperature of the quenching sensitive temperature range of the aluminum alloy; then it is transported to the second quenching component for immersion cooling, and the temperature of the aluminum profile 10 is quickly cooled to below the lower limit temperature of the quenching sensitive temperature range of the aluminum alloy.

[0044] Therefore, an online quenching device for aluminum profiles provided in an embodiment of the utility model first performs water mist cooling and / or air cooling on the aluminum profile 10 to achieve slow cooling of the aluminum profile 10 above the quenching sensitive temperature range; then immerses the aluminum profile 10 in water to achieve rapid cooling of the aluminum profile 10 in the quenching sensitive range to prevent rapid decomposition of the supersaturated solid solution; effectively controls residual stress while improving the mechanical properties of the aluminum profile 10; in addition, compared with offline quenching, it makes full use of the waste heat generated by extrusion and performs quenching directly after extrusion, which simplifies the process, saves energy, improves efficiency, shortens the production cycle, and reduces costs, thereby having important economic benefits.

[0045] See attached Figure 1 In this embodiment of the utility model, the second cooling assembly 40 also includes a water collecting tank 430, which is arranged on the outside of the second cooling box 410, and there is a gap between the side walls of the water collecting tank 430 and the second cooling box 410 along the first direction; the water collecting tank 430 is provided with a first water outlet; the second cooling box 410 is provided with a second water outlet, and the second water outlet is connected to the water collecting tank 430.

[0046] It should be noted that, since the second cooling box 410 is provided with openings 414 for passing the aluminum profile 10 at both ends along the first direction, part of the cooling water will leak from the openings 414, affecting the detection of the cooling water flow rate.

[0047] Therefore, an aluminum profile online quenching device provided by an embodiment of the utility model has a water collecting box 430 disposed on the outer side of the second cooling box 410 to collect cooling water flowing out through the second water outlet and the opening 414 of the second cooling box 410 .

[0048] See attached Figure 3 In the embodiment of the utility model, the second cooling box 410 is provided with notches 411 at both ends along the first direction, the notches 411 are provided with baffles 413 , and the openings 414 are provided on the baffles 413 .

[0049] It should be noted that the opening 414 on the baffle 413 can be designed based on the actual cross-sectional shape or actual cross-sectional size of the profile, and the baffle 413 can be detachably connected to the notch 411 .

[0050] An embodiment of the utility model provides an online quenching device for aluminum profiles. By setting an opening 414 on a baffle 413, the device is suitable for profiles with different cross-sectional shapes or different cross-sectional sizes. If the aluminum profiles 10 to be quenched online are different, only the corresponding baffle 413 needs to be replaced, thereby improving the practicality of the second cooling box 410.

[0051] See attached Figure 3 In the embodiment of the utility model, the inner wall of the notch 411 is provided with a groove 412, the grooves 412 are arranged oppositely along the second direction, and the baffle 413 is clamped in the groove 412; wherein the second direction is perpendicular to the first direction. Such an arrangement is convenient for disassembly and installation.

[0052] See attached Figure 2 and Figure 6 In the embodiment of the utility model, the online quenching device further includes a first temperature sensor 214, a second temperature sensor 215 and a third temperature sensor 216. The first temperature sensor 214 and the second temperature sensor 215 are respectively located at the two ends of the first cooling box 310 along the first direction; the third temperature sensor 216 is located at one end of the second cooling box 410 away from the first cooling box 310; the first temperature sensor 214 is used to detect the first temperature of the aluminum profile 10 before quenching, the second temperature sensor 215 is used to detect the second temperature of the aluminum profile 10 after pre-cooling quenching, and the third temperature sensor 216 is used to detect the third temperature of the aluminum profile 10 after strong cold quenching. Such a setting facilitates real-time detection of the temperature of the aluminum profile 10 before and after pre-cooling quenching and after strong cold quenching, and adjusts the cooling rate or cooling intensity based on the actual temperature, so as to achieve precise control of the cooling rate or cooling intensity of the aluminum profile 10, reduce the deformation of the aluminum alloy, and improve the mechanical strength and performance of the aluminum profile 10.

[0053] In the embodiment of the utility model, the online quenching device further includes a control system, and the first temperature sensor 214, the second temperature sensor 215 and the third temperature sensor 216 are all electrically connected to the control system.

[0054] Participate in the Figure 1 and Figure 6 In the embodiment of the utility model, the conveying assembly 20 includes a carrier frame 210 and a roller 220, the roller 220 is pivotally connected to the carrier frame 210, and the rollers 220 are provided in plurality and arranged at intervals along the first direction, and the plurality of rollers 220 are used to support the aluminum profile 10. In this way, the aluminum profile 10 is supported to prevent the aluminum profile 10 from bending and deformation.

[0055] See attached Figure 6 In one embodiment of the utility model, the support frame 210 passes through the first cooling box 310 and the water collecting box 430 , and part of the support frame 210 is located between the side walls of the water collecting box 430 and the second cooling box 410 .

[0056] In the embodiment of the utility model, the first cooling box 310 and the water collecting box 430 are adjacent to each other, and a partition plate 415 is arranged between the two. The partition plate 415 is provided with an avoidance groove, and the avoidance groove is used for the support frame 210 to pass through.

[0057] See attached Figure 3 In one embodiment of the utility model, the partition 415 is in a convex shape, including a first section, a middle section and a second section connected in sequence, the first section and the second section are used to support the carrier 210; the middle section is used to support the aluminum profile 10.

[0058] In the embodiment of the utility model, the avoidance groove is arranged in the first section.

[0059] In the second embodiment of the utility model, the conveying assembly 20 has at least two groups, which are respectively arranged between the front end of the extruder and the side wall of the water collecting box 430 close to the first cooling box 310 and downstream of the side wall of the water collecting box 430 away from the first cooling box 310 along the first direction.

[0060] In the third embodiment of the utility model, the conveying assembly 20 has three groups, which are respectively arranged between the front end of the extruder and the side wall of the water collecting box 430 close to the first cooling box 310 and the downstream of the side wall of the water collecting box 430 away from the first cooling box 310 along the first direction and the second cooling box 410.

[0061] See attached Figure 1 In the embodiment of the utility model, the carrier frame 210 is fixed with a first bracket 211 , a second bracket 212 and a third bracket 213 , the first temperature sensor 214 is fixed to the first bracket 211 ; the second temperature sensor 215 is fixed to the second bracket 212 ; the third temperature sensor 216 is fixed to the third bracket 213 .

[0062] In the embodiment of the utility model, the water inlet is connected to a water inlet pipe, the water inlet pipe is connected to a water storage tank, a first flow meter and a first water thermometer are arranged on the water inlet pipe, the first flow meter is used to detect the water inlet flow rate, and the first water thermometer is used to detect the water inlet temperature; the first water outlet is connected to a water outlet pipe, the water outlet pipe is provided with a second flow meter and a second water thermometer, the second flow meter is used to detect the water outlet flow rate, and the second water thermometer is used to detect the water outlet temperature. With such an arrangement, based on the law of conservation of energy, the water inlet flow rate per unit time is controlled to strongly cool the pre-cooled aluminum profile 10.

[0063] In the embodiment of the utility model, a flow control valve is provided on the water inlet pipe, and the flow control valve is electrically connected to the control system for adjusting the water inlet flow rate, thereby adjusting the water cooling intensity.

[0064] See attached Figure 2 and Figure 6 In the embodiment of the utility model, a stirrer 416 is provided in the second cooling box 410 , and the stirrer 416 is used to uniformize the temperature of the cooling water in the second cooling box 410 .

[0065] See attached Figure 6 In the embodiment of the utility model, the cross-sectional shape of the air-cooling nozzle 340 is rectangular, and there are multiple air-cooling nozzles 340 that are spaced apart along the first direction.

[0066] See attached Figure 6 In the embodiment of the utility model, the cross-sectional shape of the water mist cooling nozzle 330 is circular or elliptical, and there are multiple water mist cooling nozzles 330 which are spaced apart along the first direction and the second direction, respectively, wherein the second direction is perpendicular to the first direction.

[0067] See attached Figure 6 In the embodiment of the utility model, the air cooling nozzles 340 and the water mist cooling nozzles 330 are arranged alternately.

[0068] In an embodiment of the utility model, the online quenching device also includes a third cooling component, which is located downstream of the second cooling component; the third cooling component includes a connecting plate, and the connecting plate is provided with an air cooling nozzle for slowly quenching the aluminum profile.

[0069] The working principle of the embodiment of the utility model:

[0070] Get the nose tip temperature T of the aluminum alloy used in the aluminum profile b and quenching sensitive temperature range (T c , T a ) and the critical cooling rate v b ;

[0071] The pre-cooling and quenching is performed, and the steps include: a conveying component conveys the aluminum profile to a pre-cooling and quenching zone, and the pre-cooling and quenching zone is provided with a first cooling component 30, which is used to pre-cool and quench the aluminum profile 10, and detect a first temperature T1 before quenching and a second temperature T2 after pre-cooling and quenching; a first cooling rate v1 of the first cooling component 30 in the pre-cooling and quenching zone is controlled to reduce the temperature of the aluminum profile from the first temperature T1 before quenching to the second temperature T2 after pre-cooling and quenching, and the second temperature T2 after pre-cooling and quenching is equal to the upper limit temperature T2 of the quenching sensitive temperature range. a The first temperature difference ΔT1 between the two falls within a first preset temperature threshold A;

[0072] The strong cold quenching includes the following steps: conveying the aluminum profile to the strong cold quenching zone, where the strong cold quenching zone is provided with a second cooling assembly 40 for immersing the aluminum profile 10 in water for strong cold quenching; detecting a third temperature T3 after the strong cold quenching; controlling the second cooling rate v2 of the strong cold quenching zone to be greater than or equal to the critical cooling rate v b ; and the temperature of the aluminum profile is reduced from the second temperature T2 after pre-cooling quenching to the third temperature T3 after strong cold quenching, and the third temperature T3 after strong cold quenching is less than or equal to the lower limit temperature T of the quenching sensitive temperature range c .

[0073] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. An online quenching device for aluminum profiles, characterized in that: include: A conveying assembly (20) for conveying the aluminum profile (10) extruded by the extruder along a first direction; A first cooling assembly (30), comprising a first cooling box (310) and a first cover (320), wherein the first cover (320) covers the top of the first cooling box (310); at least one of the bottom of the first cooling box (310) and the first cover (320) is provided with a water mist cooling nozzle (330) and / or an air cooling nozzle (340) for pre-cooling and quenching the aluminum profile (10); and, a second cooling assembly (40), which is arranged adjacent to the first cooling assembly (30) along the first direction and is located downstream of the first cooling assembly (30); the second cooling assembly (40) comprises a second cooling box (410) and a second cover (420), the second cooling box (410) being used for immersing the aluminum profile (10) in water for strong cooling and quenching; both ends of the second cooling box (410) along the first direction are provided with openings (414), the openings (414) being used for passing the aluminum profile (10); the second cover (420) is covered on top of the second cooling box (410), and the second cover (420) is provided with a water inlet; The first direction refers to the conveying direction of the aluminum profile (10).

2. The aluminum profile online quenching device according to claim 1, characterized in that: The second cooling assembly (40) further comprises a water collecting box (430), the water collecting box (430) being arranged outside the second cooling box (410), and a gap being provided between the side walls of the water collecting box (430) and the second cooling box (410) along the first direction; the water collecting box (430) being provided with a first water outlet; The second cooling box (410) is provided with a second water outlet, and the second water outlet is connected to the water collecting box (430).

3. The aluminum profile online quenching device according to claim 2, characterized in that: The second cooling box (410) is provided with notches (411) at both ends along the first direction; the notches (411) are provided with baffles (413), and the openings (414) are provided on the baffles (413).

4. The aluminum profile online quenching device according to claim 3, characterized in that: The inner wall of the notch (411) is provided with a groove (412), the grooves (412) are arranged relatively along a second direction, and the baffle (413) is snap-fitted into the groove (412); wherein the second direction is perpendicular to the first direction.

5. The aluminum profile online quenching device according to any one of claims 2 to 4, characterized in that: The online quenching device further comprises a first temperature sensor (214), a second temperature sensor (215) and a third temperature sensor (216); the first temperature sensor (214) and the second temperature sensor (215) are respectively located at two ends of the first cooling box (310) along the first direction; the third temperature sensor (216) is located at one end of the second cooling box (410) away from the first cooling box (310); the first temperature sensor (214) is used to detect a first temperature of the aluminum profile (10) before quenching, the second temperature sensor (215) is used to detect a second temperature of the aluminum profile (10) after pre-cooling quenching, and the third temperature sensor (216) is used to detect a third temperature of the aluminum profile (10) after strong cooling quenching.

6. The aluminum profile online quenching device according to claim 5, characterized in that: The conveying assembly (20) comprises a support frame (210) and a roller (220), wherein the roller (220) is pivotally connected to the support frame (210), and the roller (220) is provided in plurality and arranged at intervals along the first direction, and the plurality of rollers (220) are used to support the aluminum profile (10).

7. The aluminum profile online quenching device according to claim 6, characterized in that: The carrier frame (210) is fixedly provided with a first bracket (211), a second bracket (212) and a third bracket (213); the first temperature sensor (214) is fixedly provided on the first bracket (211); the second temperature sensor (215) is fixedly provided on the second bracket (212); and the third temperature sensor (216) is fixedly provided on the third bracket (213); And / or, the supporting frame (210) passes through the first cooling box (310) and the water collecting box (430), and part of the supporting frame (210) is located between the side walls of the water collecting box (430) and the second cooling box (410).

8. The aluminum profile online quenching device according to any one of claims 2 to 4, characterized in that: The water inlet is connected to a water inlet pipe, which is connected to a water storage tank. The water inlet pipe is provided with a first flow meter and a first water thermometer, wherein the first flow meter is used to detect the water inlet flow rate, and the first water thermometer is used to detect the water inlet temperature; the first water outlet is connected to a water outlet pipe, wherein the water outlet pipe is provided with a second flow meter and a second water thermometer, wherein the second flow meter is used to detect the water outlet flow rate, and the second water thermometer is used to detect the water outlet temperature.

9. The aluminum profile online quenching device according to any one of claims 1 to 4, characterized in that: The second cooling box (410) is provided with an agitator (416), and the agitator (416) is used to homogenize the temperature of the cooling water in the second cooling box (410).

10. The aluminum profile online quenching device according to any one of claims 1 to 4, characterized in that: The cross-sectional shape of the air-cooling nozzle (340) is rectangular, and the air-cooling nozzle (340) is provided in plurality and arranged at intervals along the first direction; And / or, the cross-sectional shape of the water mist cooling nozzle (330) is circular or elliptical, and there are a plurality of the water mist cooling nozzles (330) which are spaced apart along the first direction and the second direction, respectively, wherein the second direction is perpendicular to the first direction.

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