Aluminum alloy workpiece on-line quenching system and on-line quenching process

Abstract

The invention relates to the field of aluminum alloy workpiece quenching, in particular to an aluminum alloy workpiece on-line quenching system and an on-line quenching process, according to the technical scheme, the aluminum alloy workpiece on-line quenching system comprises a preheating furnace, a quenching box, a connecting box, a connector, a clamping assembly and an opening and closing assembly, a placing frame is fixedly connected to the axis in the quenching box, and a quenching support is rotatably connected to the interior of the quenching box; a first nozzle, a second nozzle and a third nozzle are mounted in the quenching bracket at equal intervals, a worm gear is fixedly connected to one end of the quenching bracket, a worm is rotatably connected to the inner wall of the quenching box, the worm is in meshed connection with the worm gear, a connecting box is fixedly connected to one side of the quenching box, and scroll channels are symmetrically formed in the connecting box. The system has the advantages that a multi-stage cooling mode is adopted, air cooling, mist spraying cooling and water spraying cooling parameters can be flexibly adjusted according to workpieces of different materials and shapes, diversified production requirements are met, the application range of the system is widened, and powerful support is provided for enterprises to receive more types of aluminum alloy workpiece machining orders.

Description

Technical Field

[0001] The invention relates to the field of aluminum alloy workpiece quenching, and in particular to an aluminum alloy workpiece online quenching system and an online quenching process. Background Art

[0002] In the field of modern industrial manufacturing, aluminum alloys are widely used in many important industries such as aerospace, automobile manufacturing, and electronic equipment due to their excellent properties such as low density, high strength, and corrosion resistance. Quenching, as a key heat treatment process, plays a vital role in improving the comprehensive performance of aluminum alloy workpieces. Through quenching treatment, the hardness, strength, toughness, and wear resistance of aluminum alloys can be significantly improved, thereby meeting the strict requirements for aluminum alloy workpieces in different industrial scenarios. Early aluminum alloy quenching processes mostly used an offline operation mode; that is, the aluminum alloy workpiece was first heated to a predetermined temperature in a heating furnace, and then manually transported to the quenching equipment for cooling. This method not only has low production efficiency, but also during the transportation process, the workpiece is easily affected by the external environment, resulting in uneven temperature, which in turn affects the stability of the quenching quality. At the same time, the error of manual operation is also large, making it difficult to ensure the consistency of the quenching effect of each batch of workpieces. Summary of the invention

[0003] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an online quenching system for aluminum alloy workpieces, comprising a preheating furnace, a quenching box, a connecting box, a connecting head, a clamping assembly and an opening and closing assembly, a placing rack is fixedly connected to the axis of the quenching box, a quenching bracket is rotatably connected to the inside of the quenching box, a first nozzle, a second nozzle and a third nozzle are equidistantly installed inside the quenching bracket, one end of the quenching bracket is fixedly connected to a worm gear, the inner wall of the quenching box is rotatably connected to a worm, the worm gear is meshed with the worm gear, one side of the quenching box is fixedly connected to the connecting box, and the inside of the connecting box is connected to the worm gear. A scroll channel is provided, and rigid chains are slidably connected inside the two scroll channels, and the sides of the two rigid chains close to each other are meshed with each other. A connecting head is slidably connected inside the placement rack, and one end of the connecting head is fixedly connected to one end of the two rigid chains. Clamping plates are symmetrically installed inside the connecting head, and a clamping assembly for fixing the aluminum alloy workpiece is installed inside the connecting head. The clamping assembly is installed in cooperation with the two clamping plates. The opening of the quenching box is symmetrically provided with a cover plate, and an opening and closing assembly is installed inside the quenching box, and the opening and closing assembly is installed in cooperation with the two cover plates.

[0004] Preferably, the rigid chain is a Tsubaki rigid chain, a first motor is fixedly connected to one side of the connection box, an output end of the first motor extends into the connection box and is fixedly connected to a first sprocket, and the first sprocket is meshedly connected to one of the rigid chains.

[0005] Preferably, the clamping assembly includes a rack, a gear, a spring, a driving plate and a first threaded rod, the interior of the connecting head is symmetrically and slidingly connected with a rack, the interior of the connecting head is rotatably connected with a gear, the two racks are meshingly connected to the gear, one side of one of the racks is fixedly connected to a spring, one end of the spring is fixedly connected to the interior of the connecting head, one end of the other rack extends out of the connecting head, the interior of the connecting head is symmetrically and slidably connected to the two clamping plates, the ends of the two racks away from each other are fixedly connected to a connecting driving plate, the middle part of the driving plate is threadedly connected with a first threaded rod, and one end of the first threaded rod is rotatably connected to one side of the corresponding clamping plate.

[0006] Preferably, the opening and closing assembly includes a second sprocket, a driving sprocket, a driven sprocket, a fan-shaped bevel gear, a second threaded rod, a driven bevel gear and a threaded slider. The second sprocket is installed inside the quenching box, the driving sprocket is fixedly connected to the axis of the second sprocket, the driven sprocket is rotatably connected to the opening of the quenching box, the driving sprocket and the driven sprocket are connected via a chain transmission, the second sprocket is meshed with one of the rigid chains, the top of the driven sprocket is fixedly connected with the fan-shaped bevel gear, the second threaded rod is rotatably connected to the opening of the quenching box, one end of the second threaded rod is fixedly connected to the driven bevel gear, the fan-shaped bevel gear is intermittently meshed with the driven bevel gear, and the inner sides of the two cover plates are fixedly connected with threaded sliders, and the two threaded sliders are respectively threadedly connected to the two ends of the second threaded rod.

[0007] Preferably, reinforcing rods are symmetrically fixedly connected inside the quenching box, and two of the reinforcing rods are fixedly connected to the bottom end of the placement rack.

[0008] Preferably, the first nozzle, the second nozzle and the third nozzle are alternately arranged at equal intervals, the first nozzle is an air spray head, the second nozzle is a water mist spray head, and the third nozzle is a water spray head.

[0009] Preferably, a second motor is fixedly connected to the outer wall of the quenching box, and an output end of the second motor is fixedly connected to the worm.

[0010] Preferably, the first threaded rod is a bidirectional threaded rod.

[0011] Preferably, a hexagonal groove is formed at one end of the second threaded rod away from the clamping piece.

[0012] To achieve the above object, the present invention provides the following technical solution: an online quenching process of an online quenching system for an aluminum alloy workpiece, comprising the following steps: Step 1: Process preparation Equipment inspection: Conduct a comprehensive inspection of the preheating furnace to ensure that its heating elements, temperature sensors and control systems are operating normally and have the ability to accurately maintain the set preheating temperature; at the same time, check the internal components of the quenching box, including the stability of the placement rack, the rotation flexibility of the quenching bracket, and the spraying status of the first, second and third nozzles to ensure that there is no blockage or damage; Transmission component inspection: For the rigid chain in the connection box, check whether the chain pitch is uniform and whether there is wear and elongation, to ensure that under the drive of the first motor, through the meshing transmission of the first sprocket, a smooth and reliable telescopic action can be achieved; Debugging of clamping components: Inside the connector, debug the clamping components consisting of a rack, a gear, a spring, a driving plate and a first threaded rod to verify its reliable clamping ability for aluminum alloy workpieces under different working conditions and ensure that the clamping force meets the process requirements; Opening and closing component test: The opening and closing components of the quenching box, including the second sprocket, driving sprocket, driven sprocket, driven sprocket, fan-shaped bevel gear, second threaded rod, driven bevel gear and threaded slider, are tested for linkage to ensure that the cover can achieve accurate and smooth opening and closing action under the drive of the rigid chain; Workpiece pretreatment: Clean the surface of the aluminum alloy workpiece to be processed by chemical cleaning or mechanical grinding to remove oil, impurities and oxide layer on the surface to ensure that the surface quality of the workpiece meets the requirements of the quenching process; Step 2: Preheating Parameter setting: Accurately set the preheating temperature and time of the preheating furnace according to the specific material, shape, size and expected performance requirements of the aluminum alloy workpiece; Preheating process monitoring: During the preheating process, the temperature control system is used to monitor and record the temperature changes in the preheating furnace in real time, and the heating power is automatically adjusted through the closed-loop control algorithm to ensure that the temperature fluctuation in the furnace is controlled within the specified range and the workpiece is heated evenly; Step 3: Workpiece conveying and connector movement Workpiece positioning and conveying: The preheated aluminum alloy workpiece is accurately conveyed to the open end of the quenching box by an automated conveying device, with the positioning accuracy controlled within ±5 mm to ensure the accuracy of docking with the subsequent connector; Rigid chain drives the connector: the first motor is started, and its output torque is transmitted to the rigid chain through the first sprocket. The rigid chain uses its telescopic characteristics in the scroll channel to drive the connector to move toward the opening of the placement rack. During the movement, the position of the connector is monitored in real time by a position sensor to ensure the movement accuracy. Step 4: Open the quenching box cover Rigid chain linkage transmission: As the rigid chain moves, the second sprocket meshing with it rotates synchronously, driving the driving sprocket and the driven sprocket to rotate in turn, achieving efficient power transmission; The sector bevel gear 35 is intermittently driven: the driven sprocket drives the sector bevel gear to rotate, and in the process of intermittent meshing between the sector bevel gear and the driven bevel gear, the rotational motion is cleverly converted into the rotation of the second threaded rod, thereby realizing the driving of the threaded slider; Smooth opening and closing of the cover: The linear motion of the threaded slider drives the two cover plates to open or close symmetrically, ensuring that the cover plates open and close smoothly without jamming, and the opening and closing time is controlled within 3 seconds; Step 5: Workpiece clamping and fixing Rack-gear linkage: When the connector reaches the specified position, the rigid chain is reset, and one of the racks is squeezed and moves toward the inside of the connector. Through the meshing action of the gears, the other rack is driven to move in the opposite direction, thus achieving bidirectional synchronous motion. Precise adjustment of clamping force: The two racks are connected to the first threaded rod through the driving plate. The bidirectional thread characteristics of the first threaded rod are used to accurately adjust the spacing between the two clamping pieces, thereby achieving reliable clamping of aluminum alloy workpieces of different sizes; Step 6: Quenching operation Quenching bracket rotation drive: Start the second motor, and drive the quenching bracket to rotate steadily at a speed of 10r / min in the quenching box through the worm-worm gear transmission pair to ensure uniform spraying of each nozzle on the workpiece; Multi-stage quenching spray: The first nozzle is an air spray head to initially cool the workpiece surface; then the second nozzle uses water mist for spray cooling to further reduce the workpiece temperature; finally, the third nozzle uses water spray cooling to quickly cool the workpiece to room temperature, completing the quenching process.

[0013] Compared with the prior art, the present invention has the following beneficial effects: Significantly improve production efficiency: This online quenching system adopts a fully automated conveying, clamping, quenching and unloading process, abandoning the traditional manual handling and operation links; from the conveying of the workpiece after preheating to the removal of the workpiece after quenching, the entire process is seamlessly connected, greatly shortening the production cycle; for example, in the workpiece conveying and connector movement steps, the automated conveying device can accurately and quickly deliver the workpiece to the designated position, and cooperate with the efficient movement of the rigid chain to drive the connector. Compared with the traditional method, it greatly improves the production efficiency and meets the needs of large-scale industrial production; Precisely guarantee the quenching quality: Through precise parameter setting and real-time monitoring, the high stability and uniformity of the quenching process are ensured; during the preheating operation, the temperature control system can control the temperature fluctuation in the furnace within a very small range to ensure that the workpiece is heated evenly; during the quenching operation, the stable rotation of the quenching bracket and the multi-stage, differentiated cooling method enable the workpiece to be cooled just right at different stages, effectively avoiding quality problems caused by uneven temperature; taking the hardness test data as an example, the aluminum alloy workpiece quenched by this system is significantly better than the existing technology, greatly improving the consistency and stability of product quality; Flexible adaptation to diverse needs: The system's clamping components and cooling methods are highly flexible and adjustable; the clamping components can accurately adjust the clamping force within a large range according to the different sizes of aluminum alloy workpieces to ensure that the workpieces remain stable during the quenching process; at the same time, the multi-stage cooling method can flexibly adjust the parameters of air cooling, spray cooling and water spray cooling for workpieces of different materials and shapes to meet diverse production needs, broaden the application scope of the system, and provide strong support for enterprises to undertake more types of aluminum alloy workpiece processing orders. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the quenching box of the present invention; Figure 3 It is a schematic diagram of the structure of the placement rack of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure from another perspective; Figure 5 It is a schematic diagram of the internal structure of the connector of the present invention; Figure 6 This is a schematic diagram of the top structure of the connector of the present invention; Figure 7 It is a schematic diagram of the structure of the quenching bracket of the present invention; Figure 8 for Figure 4 The enlarged diagram of the structure at A in the middle; Fig. 9 for Figure 4 The enlarged diagram of the structure at B in the middle; Fig.10 for Figure 3 Schematic diagram of the structure of the enlarged view at point C in the middle.

[0015] In the figure: 1. preheating furnace; 2. quenching box; 3. placement rack; 4. quenching bracket; 5. connecting box; 6. scroll channel; 7. rigid chain; 8. connecting head; 9. clamping plate; 10. worm wheel; 11. worm; 12. cover plate; 13. first motor; 14. first sprocket; 15. reinforcing rod; 16. second motor; 17. hexagonal groove; 21. rack; 22. gear; 23. spring; 24. driving plate; 25. first threaded rod; 31. second sprocket; 32. driving sprocket; 33. driven sprocket; 35. fan-shaped bevel gear; 36. second threaded rod; 37. driven bevel gear; 38. threaded slider; 41. first nozzle; 42. second nozzle; 43. third nozzle. DETAILED DESCRIPTION

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-10 As shown, the online quenching system for aluminum alloy workpieces proposed by the present invention includes a preheating furnace 1, a quenching box 2, a connecting box 5, a connecting head 8, a clamping assembly and an opening and closing assembly. A placing rack 3 is fixedly connected to the internal axis of the quenching box 2, a quenching bracket 4 is rotatably connected to the inside of the quenching box 2, a first nozzle 41, a second nozzle 42 and a third nozzle 43 are equidistantly installed inside the quenching bracket 4, a worm gear 10 is fixedly connected to one end of the quenching bracket 4, a worm 11 is rotatably connected to the inner wall of the quenching box 2, the worm 11 is meshed with the worm gear 10, a connecting box 5 is fixedly connected to one side of the quenching box 2, scroll channels 6 are symmetrically opened inside the connecting box 5, two scroll channels 6 are slidably connected inside with rigid chains 7, the two rigid chains 7 are meshed with each other on the sides close to each other, the placing rack 3 is slidably connected with a connecting head 8, One end of the connector 8 is fixedly connected to one end of the two rigid chains 7, a clamping piece 9 is symmetrically installed inside the connector 8, a clamping assembly for fixing the aluminum alloy workpiece is installed inside the connector 8, the clamping assembly is installed in cooperation with the two clamping pieces 9, the opening of the quenching box 2 is symmetrically provided with a cover plate 12, an opening and closing assembly is installed inside the quenching box 2, the opening and closing assembly is installed in cooperation with the two cover plates 12, a reinforcing rod is symmetrically fixedly connected inside the quenching box 2, the two reinforcing rods are fixedly connected to the bottom end of the placement rack 3, the first nozzle 41, the second nozzle 42 and the third nozzle 43 are equidistantly arranged alternately, the first nozzle 41 is an air spray head, the second nozzle 42 is a water mist spray head, the third nozzle 43 is a water spray head, the outer wall of the quenching box 2 is fixedly connected to the second motor 16, and the output end of the second motor 16 is fixedly connected to the worm 11; The rigid chain 7 is a Tsubaki rigid chain, a first motor 13 is fixedly connected to one side of the connection box 5, an output end of the first motor 13 extends into the connection box 5 and is fixedly connected to a first sprocket 14, and the first sprocket 14 is meshed and connected with one of the rigid chains 7; The clamping assembly includes a rack 21, a gear 22, a spring 23, a driving plate 24 and a first threaded rod 25. The rack 21 is symmetrically slidably connected inside the connecting head 8, and the gear 22 is rotatably connected inside the connecting head 8. The two racks 21 are meshed with the gear 22. One side of one of the racks 21 is fixedly connected to a spring 23, and one end of the spring 23 is fixedly connected to the inside of the connecting head 8. One end of the other rack 21 extends out of the connecting head 8, and the inside of the connecting head 8 is symmetrically slidably connected to the two clamping pieces 9. The ends of the two racks 21 that are away from each other are fixedly connected to a connecting driving plate 24. The middle part of the driving plate 24 is threadedly connected to the first threaded rod 25. One end of the first threaded rod 25 is rotatably connected to one side of the corresponding clamping piece 9. The first threaded rod 25 is a bidirectional threaded rod. The opening and closing assembly includes a second sprocket 31, a driving sprocket 32, a driven sprocket 33, a fan-shaped bevel gear 35, a second threaded rod 36, a driven bevel gear 37 and a threaded slider 38. The second sprocket 31 is installed inside the quenching box 2. The driving sprocket 32 ​​is fixedly connected to the axis of the second sprocket 31. The driven sprocket 33 is rotatably connected to the opening of the quenching box 2. The driving sprocket 32 ​​and the driven sprocket 33 are connected by a chain transmission. The second sprocket 31 is meshed and connected with one of the rigid chains 7. A fan-shaped bevel gear 35 is fixedly connected to the top of the moving sprocket 33, and a second threaded rod 36 is rotatably connected to the opening of the quenching box 2. One end of the second threaded rod 36 is fixedly connected to a driven bevel gear 37. The fan-shaped bevel gear 35 is intermittently meshed with the driven bevel gear 37. A threaded slider 38 is fixedly connected to the inner side of the two cover plates 12. The two threaded sliders 38 are respectively threadedly connected to the two ends of the second threaded rod 36. An inner hexagonal groove 17 is provided at one end of the second threaded rod 36 away from the clamping piece 9.

[0021] like Figure 1-10 As shown, the online quenching system and online quenching process of aluminum alloy workpiece proposed by the present invention include the following steps: Step 1: Process preparation Equipment inspection: Conduct a comprehensive inspection of the preheating furnace 1 to ensure that its heating elements, temperature sensors and control system operate normally and have the ability to accurately maintain the set preheating temperature; at the same time, check the internal components of the quenching box 2, including the stability of the placement rack 3, the rotation flexibility of the quenching bracket 4, and the spraying status of the first nozzle 41, the second nozzle 42, and the third nozzle 43 to ensure that there is no blockage or damage; Transmission component inspection: For the rigid chain 7 in the connection box 5, it is necessary to check whether the chain pitch is uniform and whether there is wear and elongation, to ensure that under the drive of the first motor 13, through the meshing transmission of the first sprocket 14, a smooth and reliable telescopic action can be achieved; Debugging of clamping assembly: Inside the connector 8, the clamping assembly consisting of the rack 21, the gear 22, the spring 23, the driving plate 24 and the first threaded rod 25 is debugged to verify its reliable clamping ability for the aluminum alloy workpiece under different working conditions and ensure that the clamping force meets the process requirements; Opening and closing assembly test: The opening and closing assembly of the quenching box 2, including the second sprocket 31, the driving sprocket 32, the driven sprocket 33, the driven sprocket 34, the fan-shaped bevel gear 35, the second threaded rod 36, the driven bevel gear 37 and the threaded slider 38, is subjected to linkage test to ensure that the cover plate 12 can realize accurate and smooth opening and closing action under the drive of the rigid chain 7; Workpiece pretreatment: Clean the surface of the aluminum alloy workpiece to be processed by chemical cleaning or mechanical grinding to remove oil, impurities and oxide layer on the surface to ensure that the surface quality of the workpiece meets the requirements of the quenching process; Step 2: Preheating Parameter setting: Accurately set the preheating temperature and time of preheating furnace 1 according to the specific material, shape, size and expected performance requirements of the aluminum alloy workpiece; Preheating process monitoring: During the preheating process, the temperature control system is used to monitor and record the temperature changes in the preheating furnace in real time, and the heating power is automatically adjusted through the closed-loop control algorithm to ensure that the temperature fluctuation in the furnace is controlled within the specified range and the workpiece is heated evenly; Step 3: Workpiece conveying and connector 8 movement Workpiece positioning and conveying: The preheated aluminum alloy workpiece is accurately conveyed to the open end of the quenching box 2 by an automated conveying device, and the positioning accuracy is controlled within ±5 mm to ensure the accuracy of docking with the subsequent connector 8; The rigid chain 7 drives the connector 8: the first motor 13 is started, and its output torque is transmitted to the rigid chain 7 through the first sprocket 14. The rigid chain uses the telescopic characteristics in the scroll channel 6 to drive the connector 8 to move toward the opening of the placement rack 3; during the movement, the position of the connector 8 is monitored in real time by a position sensor to ensure the movement accuracy; Step 4: Open the cover 12 of the quenching box 2 Rigid chain 7 linkage transmission: As the rigid chain 7 moves, the second sprocket 31 meshing with it rotates synchronously, driving the driving sprocket 32 ​​and the driven sprocket 33 to rotate in turn, thus realizing efficient power transmission; The sector bevel gear 35 is intermittently driven: the driven sprocket 34 drives the sector bevel gear 35 to rotate, and in the process of intermittent meshing with the driven bevel gear 37, the rotational motion is cleverly converted into the rotation of the second threaded rod 36, thereby realizing the driving of the threaded slider 38; The cover plates 12 open and close smoothly: the linear motion of the threaded slider 38 drives the two cover plates 12 to open or close symmetrically, ensuring that the cover plates 12 open and close smoothly without any jamming, and the opening and closing time is controlled within 3 seconds; Step 5: Workpiece clamping and fixing Rack 22 - gear 21 linkage: After the connector 8 reaches the specified position, the rigid chain 7 is reset, and one of the racks 21 is squeezed and moves toward the inside of the connector 8. Through the meshing action of the gear 22, the other rack 21 is driven to move in the opposite direction, thus realizing bidirectional synchronous motion; Precise adjustment of clamping force: the two racks 21 are connected to the first threaded rod 25 through the driving plate 24. The bidirectional thread characteristics of the first threaded rod 25 are used to accurately adjust the spacing between the two clamping pieces 9, thereby achieving reliable clamping of aluminum alloy workpieces of different sizes; Step 6: Quenching operation The quenching bracket 4 is driven to rotate: the second motor 14 is started, and the quenching bracket 4 is driven to rotate stably at a speed of 10r / min in the quenching box 2 through the worm 11 - worm wheel 10 transmission pair, so as to ensure that each nozzle sprays the workpiece evenly; Multi-stage quenching spray: the first nozzle 41 is an air spray head to initially cool the workpiece surface; then the second nozzle 42 performs water mist spray cooling to further reduce the workpiece temperature; finally, the third nozzle 43 performs water spray cooling to quickly cool the workpiece to room temperature, completing the quenching process.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An online quenching system for aluminum alloy workpieces, comprising: Preheating furnace (1); A quenching box (2), wherein a placement rack (3) is fixedly connected to the axis of the quenching box (2), a quenching bracket (4) is rotatably connected to the inside of the quenching box (2), a first nozzle (41), a second nozzle (42) and a third nozzle (43) are equidistantly installed inside the quenching bracket (4), a worm gear (10) is fixedly connected to one end of the quenching bracket (4), a worm (11) is rotatably connected to the inner wall of the quenching box (2), and the worm gear (11) is meshingly connected to the worm gear (10); A connecting box (5), one side of the quenching box (2) is fixedly connected to the connecting box (5), scroll channels (6) are symmetrically provided inside the connecting box (5), two scroll channels (6) are slidably connected inside with rigid chains (7), and the two rigid chains (7) are meshed with each other at the sides close to each other; A connecting head (8), the placing frame (3) is slidably connected to the inside of the connecting head (8), one end of the connecting head (8) is fixedly connected to one end of the two rigid chains (7), and a clamping piece (9) is symmetrically installed inside the connecting head (8); A clamping assembly, wherein a clamping assembly for fixing the aluminum alloy workpiece is installed inside the connecting head (8), and the clamping assembly is installed in cooperation with two clamping pieces (9); An opening and closing assembly, wherein the opening of the quenching box (2) is symmetrically provided with a cover plate (12), an opening and closing assembly is installed inside the quenching box (2), and the opening and closing assembly is installed in cooperation with the two cover plates (12).

2. The online quenching system for aluminum alloy workpieces according to claim 1 is characterized in that: The rigid chain (7) is a Tsubaki rigid chain, a first motor (13) is fixedly connected to one side of the connection box (5), an output end of the first motor (13) extends into the connection box (5) and is fixedly connected to a first sprocket (14), and the first sprocket (14) is meshedly connected to one of the rigid chains (7).

3. The online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: The clamping assembly comprises a rack (21), a gear (22), a spring (23), a driving plate (24) and a first threaded rod (25); the interior of the connecting head (8) is symmetrically slidably connected with the rack (21); the interior of the connecting head (8) is rotatably connected with the gear (22); the two racks (21) are meshedly connected with the gear (22); one side of one of the racks (21) is fixedly connected with the spring (23); one end of the spring (23) is fixedly connected with the interior of the connecting head (8); one end of the other rack (21) extends out of the connecting head (8); the interior of the connecting head (8) is symmetrically slidably connected with two clamping plates (9); the ends of the two racks (21) that are away from each other are fixedly connected with a connecting driving plate (24); the middle part of the driving plate (24) is threadedly connected with the first threaded rod (25); one end of the first threaded rod (25) is rotatably connected with one side of the corresponding clamping plate (9).

4. The online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: The opening and closing assembly comprises a second sprocket (31), a driving sprocket (32), a driven sprocket (33), a fan-shaped bevel gear (35), a second threaded rod (36), a driven bevel gear (37) and a threaded slider (38). The second sprocket (31) is installed inside the quenching box (2). The driving sprocket (32) is fixedly connected to the axis of the second sprocket (31). The driven sprocket (33) is rotatably connected to the opening of the quenching box (2). The driving sprocket (32) and the driven sprocket (33) are connected via a chain transmission. The second sprocket (31) is fixedly connected to the axis of the second sprocket (31). 1) is meshed with one of the rigid chains (7), a fan-shaped bevel gear (35) is fixedly connected to the top of the driven sprocket (33), a second threaded rod (36) is rotatably connected to the opening of the quenching box (2), one end of the second threaded rod (36) is fixedly connected to the driven bevel gear (37), the fan-shaped bevel gear (35) and the driven bevel gear (37) are intermittently meshed, and a threaded slider (38) is fixedly connected to the inner side of the two cover plates (12), and the two threaded sliders (38) are respectively threadedly connected to the two ends of the second threaded rod (36).

5. The online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: Reinforcement rods are symmetrically and fixedly connected inside the quenching box (2), and two of the reinforcement rods are fixedly connected to the bottom end of the placement frame (3).

6. The online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: The first nozzle (41), the second nozzle (42) and the third nozzle (43) are alternately arranged at equal intervals; the first nozzle (41) is an air spray head, the second nozzle (42) is a water mist spray head, and the third nozzle (43) is a water spray head.

7. The online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: A second motor (16) is fixedly connected to the outer wall of the quenching box (2), and an output end of the second motor (16) is fixedly connected to the worm (11).

8. The online quenching system for aluminum alloy workpieces according to claim 3 is characterized in that: The first threaded rod (25) is a bidirectional threaded rod.

9. The online quenching system for aluminum alloy workpieces according to claim 4, characterized in that: An inner hexagonal groove (17) is formed at one end of the second threaded rod (36) away from the clamping sheet (9).

10. The online quenching process of the online quenching system for aluminum alloy workpieces according to claim 1, characterized in that: The following steps are involved: Step 1: Process preparation Equipment inspection: Conduct a comprehensive inspection of the preheating furnace (1) to ensure that its heating elements, temperature sensors and control system are operating normally and have the ability to accurately maintain the set preheating temperature; at the same time, check the internal components of the quenching box (2), including the stability of the placement rack (3), the rotation flexibility of the quenching bracket (4), and the spraying status of the first nozzle (41), the second nozzle (42), and the third nozzle (43) to ensure that there is no blockage or damage; Inspection of transmission components: For the rigid chain (7) in the connection box (5), it is necessary to check whether the chain pitch is uniform and whether there is any wear and elongation, so as to ensure that under the drive of the first motor (13), through the meshing transmission of the first sprocket (14), a smooth and reliable telescopic action can be achieved; Debugging the clamping assembly: Inside the connector (8), the clamping assembly consisting of the rack (21), the gear (22), the spring (23), the driving plate (24) and the first threaded rod (25) is debugged to verify its reliable clamping ability for the aluminum alloy workpiece under different working conditions, and ensure that the clamping force meets the process requirements; Opening and closing component test: The opening and closing components of the quenching box (2), including the second sprocket (31), the driving sprocket (32), the driven sprocket (33), the driven sprocket (34), the fan-shaped bevel gear (35), the second threaded rod (36), the driven bevel gear (37) and the threaded slider (38), are subjected to linkage test to ensure that the cover plate (12) can achieve accurate and smooth opening and closing action under the drive of the rigid chain (7); Workpiece pretreatment: Clean the surface of the aluminum alloy workpiece to be processed by chemical cleaning or mechanical grinding to remove oil, impurities and oxide layer on the surface to ensure that the surface quality of the workpiece meets the requirements of the quenching process; Step 2: Preheating Parameter setting: accurately setting the preheating temperature and time of the preheating furnace (1) according to the specific material, shape, size and expected performance requirements of the aluminum alloy workpiece; Preheating process monitoring: During the preheating process, the temperature control system is used to monitor and record the temperature changes in the preheating furnace in real time, and the heating power is automatically adjusted through the closed-loop control algorithm to ensure that the temperature fluctuation in the furnace is controlled within the specified range and the workpiece is heated evenly; Step 3: Workpiece conveying and connector (8) movement Workpiece positioning and conveying: An automated conveying device is used to accurately convey the preheated aluminum alloy workpiece to the open end of the quenching box (2), with the positioning accuracy controlled within ±5 mm to ensure the accuracy of docking with the subsequent connector (8); The rigid chain (7) drives the connector (8): the first motor (13) is started, and its output torque is transmitted to the rigid chain (7) through the first sprocket (14), and the rigid chain is used to drive the connector (8) to move toward the opening of the placement frame (3) by utilizing the telescopic characteristics of the rigid chain in the scroll channel (6); during the movement, the position of the connector (8) is monitored in real time by a position sensor to ensure the movement accuracy; Step 4: Open the cover (12) of the quenching box (2). Rigid chain (7) linkage transmission: as the rigid chain (7) moves, the second sprocket (31) meshing therewith rotates synchronously, driving the driving sprocket (32) and the driven sprocket (33) to rotate in turn, thereby achieving efficient power transmission; The sector bevel gear 35 is intermittently driven: the driven sprocket (34) drives the sector bevel gear (35) to rotate, and in the process of intermittent meshing between the sector bevel gear (35) and the driven bevel gear (37), the rotational motion is cleverly converted into the rotation of the second threaded rod (36), thereby realizing the driving of the threaded slider (38); The cover plates (12) open and close smoothly: the linear motion of the threaded slider (38) drives the two cover plates (12) to open or close symmetrically, ensuring that the cover plates (12) open and close smoothly without any jamming, and the opening and closing time is controlled within 3 seconds; Step 5: Workpiece clamping and fixing Rack (22) - gear (21) linkage: After the connector (8) reaches the specified position, the rigid chain (7) is reset, and one of the racks (21) is squeezed to move toward the inside of the connector (8), and through the meshing action of the gear (22), the other rack (21) is driven to move in the opposite direction, thereby achieving bidirectional synchronous motion; Precise adjustment of clamping force: the two racks (21) are connected to the first threaded rod (25) via the driving plate (24), and the bidirectional thread characteristics of the first threaded rod (25) are utilized to precisely adjust the spacing between the two clamping pieces (9), thereby achieving reliable clamping of aluminum alloy workpieces of different sizes; Step 6: Quenching operation The quenching bracket (4) is driven to rotate: the second motor (14) is started to drive the quenching bracket (4) to rotate stably at a speed of 10 r / min in the quenching box (2) through the worm (11) - worm wheel (10) transmission pair, so as to ensure that each nozzle sprays the workpiece evenly; Multi-stage quenching spray: the first nozzle (41) is an air spray head to initially cool the surface of the workpiece; then the second nozzle (42) performs water mist spray cooling to further reduce the temperature of the workpiece; finally, the third nozzle (43) performs water spray cooling to quickly cool the workpiece to room temperature, completing the quenching process.

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