Production process of powder spraying aluminum alloy profile

Abstract

The invention belongs to the technical field of profile processing, particularly relates to a production process of a powder spraying aluminum alloy profile, and provides the following scheme aiming at the problems that a profile is inconvenient to move among a plurality of nozzles in the existing use process, and the pressure of the nozzles can drive the profile to shake when the profile is conveyed in a hanging manner, so that the washing is not uniform. The method comprises the following steps: S1, manually rechecking defects of a base material; s2, hanging to a cleaning machine, and carrying out water washing, degreasing, water washing, water washing, conversion, water washing, water washing and draining by using the cleaning machine; s3, drying by using a dryer, and cooling; through the integrated cleaning machine design, continuous and automatic cleaning of a base material is achieved, the process adopts a chain wheel and chain transmission mechanism and is combined with motor driving, it is ensured that the base material stably moves in a plurality of treatment grooves, the production efficiency is improved, meanwhile, through the ingenious design of a lifting mechanism and a cleaning mechanism, the production cost is reduced, and the production efficiency is improved. Accurate lifting and inclination treatment of the base material are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of profile processing, in particular to a production process of a powder sprayed aluminum alloy profile. Background Art

[0002] Aluminum profiles are aluminum materials with varying cross-sectional shapes obtained by hot-melting and extruding aluminum rods. The production process primarily involves three steps: melting, extrusion, and coloring. Coloring primarily involves oxidation, electrophoretic coating, fluorocarbon spraying, powder coating, and wood grain transfer. Before powder coating, aluminum profiles generally require water washing and drying.

[0003] After searching, the utility model with announcement number CN214052794U discloses an aluminum profile water washing device, which has the following disadvantages: during use, it is inconvenient to move the profile between multiple nozzles; at the same time, when transported by hanging, the pressure of the nozzle will cause the profile to shake, resulting in uneven water washing. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that it is inconvenient to move the profile between multiple nozzles during use, and when transported by hanging, the pressure of the nozzle will cause the profile to shake, resulting in uneven water washing, and a production process for powder spraying aluminum alloy profiles is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A production process for powder-spraying aluminum alloy profiles, comprising the following steps:

[0007] S1. Manually re-inspect the substrate for defects;

[0008] S2. Hang it in a cleaning machine and use the cleaning machine to wash → degrease → wash → wash → convert → wash → wash → drain;

[0009] S3, then use the dryer to dry → cool;

[0010] S4, then conduct quality inspection by manual unloading;

[0011] S5. Manually place the workpiece on the spraying machine for air blowing and dust removal → electrostatic powder spraying → powder solidification → cooling;

[0012] S6. Finally, the products are manually unloaded → quality inspection → laminating → packaging → measurement and shipped out.

[0013] In one possible design, the cleaning machine includes two support frames, a same box is fixed between the two support frames, and the box is provided with a first water washing tank, a degreasing tank, a second water washing tank, a third water washing tank, a conversion tank, a fourth water washing tank and a fifth water washing tank for washing, degreasing, washing, washing, converting, washing and washing the substrate in sequence;

[0014] Two rotating shafts are rotatably provided between the two support frames, and two sprockets are provided on the outer wall fixed sleeves of the rotating shafts. The corresponding two sprockets are transmission-connected with the same chain, and the chain is provided with a plurality of hangers for hanging substrates. A motor is fixedly provided on one side of one of the support frames, and the output end of the motor is fixedly connected to the corresponding rotating shaft for driving the substrate to move;

[0015] The lifting mechanism is arranged above the material table and is used to drive the substrate into the liquid below;

[0016] Multiple cleaning mechanisms are respectively arranged in the first water washing tank, the degreasing tank, the second water washing tank, the third water washing tank, the conversion tank, the fourth water washing tank and the fifth water washing tank, and are used in conjunction with the lifting mechanism to clean the substrate.

[0017] In one possible design, the lifting mechanism includes a mounting frame fixed on the top of one of the support frames, two first guide rods are slidably provided on the top of the mounting frame, and the bottom of the two first guide rods is fixed with the same connecting frame, an electric push rod is fixed on the top of the mounting frame, and the output end of the electric push rod is fixedly connected to the connecting frame, connecting plates are fixed on both sides of the connecting frame, and a plurality of extension strips corresponding to the hangers are fixed on the bottom of the connecting plate, and a positioning block used in conjunction with the hanger is fixed on one side of the extension strip for limiting the substrate.

[0018] In a possible design, the two connecting plates are arranged in a high and low shape to drive the substrate to tilt.

[0019] In one possible design, the hanger includes a fixed bar fixed on the outside of the chain, a slider is fixed on one side of the fixed bar, a sliding frame is slidably provided on the outer wall of the slider, a hook is fixed on the bottom of the sliding frame, two second guide rods are slidably provided on the top of the slider, the second guide rods are fixed in the sliding frame, a first spring is sleeved on the outer wall of the second guide rod, and the two ends of the first spring are respectively fixedly connected to the top of the slider and the top wall of the sliding frame.

[0020] In a possible design, the cleaning mechanism includes a cylinder arranged on one side of one of the support frames, a piston rod is slidably provided in the cylinder, the piston rod is connected to the corresponding connecting plate by a connecting rod, one side of the cylinder is connected to an air intake pipe for air intake, a first one-way valve is provided on the air intake pipe, the other side of the cylinder is connected to a nozzle, a second one-way valve is provided on the nozzle, and one end of the nozzle extends into the box body.

[0021] In one possible design, a fixed plate is fixed in the nozzle, and multiple guide plates are fixed in the nozzle. The same sliding rod is slidably provided on one side of the multiple guide plates, and a sealing plate that contacts the fixed plate is fixed at one end of the sliding rod. One end of the sliding rod is transmission-connected with the corresponding extension bar for driving the sealing plate away from the fixed plate. Multiple through holes are provided on one side of the guide plate, the fixed plate and the sealing plate, and the through holes on the fixed plate and the sealing plate are staggered with each other for sealing one end of the nozzle.

[0022] In a possible design, a third guide rod is slidably provided at the other end of the sliding rod, and the other end of the third guide rod is fixedly connected to the other end of the rotating shaft. A second spring is sleeved on the outer wall of the third guide rod, and the two ends of the second spring are respectively fixedly connected to the inner wall of one side of the rotating shaft and one end of the sliding rod. A wedge bar used in conjunction with the extension bar is slidably provided in the nozzle, and the bottom end of the wedge bar is fixedly connected to the sliding rod.

[0023] Beneficial effect: In the present invention, the production process of powder-coated aluminum alloy profiles realizes efficient and automatic cleaning of aluminum alloy profiles by adopting a specially designed cleaning machine. The box in the cleaning machine is sequentially provided with multiple processing tanks, which can meet the whole process requirements of the substrate from water washing, degreasing to conversion treatment, ensuring the thoroughness and quality of cleaning.

[0024] In the present invention, the production process of powder-coated aluminum alloy profiles adopts a sprocket and chain transmission method combined with a motor drive to achieve continuous and stable movement of the substrate during the cleaning process, greatly improving production efficiency. At the same time, the design of the hanger enables the substrate to be firmly hung on the chain, avoiding falling off or shaking during the cleaning process, ensuring uniformity and safety of cleaning.

[0025] In the present invention, the production process of the powder-coated aluminum alloy profile is designed with a lifting mechanism, particularly by driving the lifting of the connecting frame and the connecting plate by an electric push rod, to achieve precise lifting control of the substrate, so that the substrate can be accurately immersed in the liquid below, ensuring the depth and effect of the cleaning. At the same time, the high and low design of the connecting plate allows the substrate to tilt during the lifting process, further improving the uniformity and comprehensiveness of the cleaning.

[0026] In the present invention, the production process for powder-coated aluminum alloy profiles, the design of the cleaning mechanism, particularly through the connection between the piston rod and the connecting plate, and the one-way valve provided on the nozzle, achieves automatic cleaning of the substrate. When the connecting plate is raised or lowered, it can drive the piston rod to slide within the cylinder, thereby generating airflow that is ejected through the nozzle to purge the substrate. The design of the fixed plate, guide plate, sliding rod, and sealing plate within the nozzle further enhances the flexibility and accuracy of the cleaning mechanism. The transmission connection between the sliding rod and the extension bar, as well as the staggered design of the through-hole, achieves precise control of the nozzle outlet, allowing the airflow to be accurately sprayed onto the substrate, improving the targetedness and effectiveness of the cleaning.

[0027] In the present invention, continuous and automatic cleaning of the substrate is achieved through the integrated cleaning machine design. The process adopts a sprocket chain transmission mechanism combined with a motor drive to ensure the stable movement of the substrate in multiple processing tanks, thereby improving production efficiency. At the same time, the ingenious design of the lifting mechanism and the cleaning mechanism not only realizes the precise lifting and tilting processing of the substrate, but also through the coordinated use of the piston rod and the nozzle, the substrate is accurately and effectively cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional structural diagram of a production process for powder-coated aluminum alloy profiles proposed in the present invention;

[0029] Figure 2 A schematic structural diagram of another perspective of a production process for powder-coated aluminum alloy profiles proposed by the present invention;

[0030] Figure 3 This is a schematic diagram of the pendant structure of a production process for powder-sprayed aluminum alloy profiles proposed by the present invention;

[0031] Figure 4 This is a schematic diagram of the nozzle installation structure of a production process for powder spraying aluminum alloy profiles proposed by the present invention;

[0032] Figure 5 This is a schematic diagram of the connecting plate and connecting frame structure of a production process for powder-coated aluminum alloy profiles proposed by the present invention;

[0033] Figure 6 This is a schematic diagram of the lifting frame structure of a production process for powder-spraying aluminum alloy profiles proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the cross-sectional structure of a nozzle for a production process of powder-sprayed aluminum alloy profiles proposed by the present invention.

[0035] In the figure: 1. Support frame; 2. Material table; 3. Rotating shaft; 4. Sprocket; 5. Chain; 6. Hanging piece; 7. Motor; 8. Mounting frame; 9. Electric push rod; 10. First guide rod; 11. Connecting frame; 12. Connecting plate; 13. Connecting rod; 14. Cylinder; 15. Piston rod; 16. Inlet pipe; 17. First one-way valve; 18. Fixing bar; 19. Sliding block; 20. Sliding frame; 21. Second guide rod; 22. First spring; 23. Hanging piece Hook; 24. Box body; 25. First water washing tank; 26. Degreasing tank; 27. Second water washing tank; 28. Third water washing tank; 29. ​​Conversion tank; 30. Fourth water washing tank; 31. Fifth water washing tank; 32. Nozzle; 33. Second one-way valve; 34. Extension strip; 35. Positioning block; 36. Fixed plate; 37. Guide plate; 38. Sliding rod; 39. Sealing plate; 40. Through hole; 41. Wedge strip; 42. Third guide rod; 43. Second spring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example 1

[0038] Reference Figure 1-Figure 7 A production process for powder coating aluminum alloy profiles, which is used in the field of profile processing, includes the following steps:

[0039] S1. Manually recheck the substrate for defects. If there are obvious oil stains, stains, or scratches, handle them as follows:

[0040] A: If there is a lot of oil stains, increase the degreasing time during processing;

[0041] B: The stain is wiped off with solvent;

[0042] C: Minor oxidation is removed with acid;

[0043] D: For scratches that are not too deep, use sandpaper to polish;

[0044] E: If there are oxidized materials for processing or chromized materials for reprocessing, they must be alkali washed and de-filmed. Pay attention to the alkali washing operating procedures and be careful not to leave alkali solution in the tank or holes. Drain the water after neutralization.

[0045] S2. Hang it in the cleaning machine and use the cleaning machine to wash → degrease → wash → wash → convert → wash → wash → drain. The washing water uses raw water, and the acid degreasing agent concentration is: 70-110g / l; F: 0.5-1.5g / l

[0046] S3, then use the dryer to dry → cool;

[0047] S4, then conduct quality inspection by manual unloading;

[0048] S5. Manually place the workpiece on the spraying machine for air blowing and dust removal → electrostatic powder spraying → powder solidification → cooling;

[0049] S6. Finally, the products are manually unloaded → quality inspection → laminating → packaging → measurement and shipped out.

[0050] The overall structure of the cleaning machine consists of two support frames 1, with a housing 24 fixed between them. Housing 24 houses a first washing tank 25, a degreasing tank 26, a second washing tank 27, a third washing tank 28, a conversion tank 29, a fourth washing tank 30, and a fifth washing tank 31, arranged in sequence according to the processing flow. These tanks are used to wash, degrease, rewash, rewash, conversion, rewash, and finally rinse the substrate.

[0051] Two rotating shafts 3 are rotatably disposed between the two support frames 1. Two sprockets 4 are fixedly mounted on the outer walls of these rotating shafts 3, and the same chain 5 is connected to the corresponding sprockets 4. The chain 5 is equipped with multiple hangers 6 for hanging substrates. A motor 7 is fixedly mounted on one side of one of the support frames 1. The output end of this motor 7 is fixedly connected to the corresponding rotating shaft 3, thereby driving the chain 5 and hangers 6 to move, allowing the substrate to pass through each slot for processing.

[0052] Next, a detailed description of the lifting mechanism follows. This mechanism is located above the material table 2 and is used to move the substrate into the liquid below. The lifting mechanism includes a mounting frame 8 fixed to the top of one of the support frames 1. Two first guide rods 10 are slidably mounted on the top of the mounting frame 8. The bottoms of these first guide rods 10 are fixedly connected to a common connecting frame 11. A motorized push rod 9 is fixedly mounted on the top of the mounting frame 8. Its output end is fixedly connected to the connecting frame 11, driving the connecting frame 11 up and down. Connecting plates 12 are fixed to either side of the connecting frame 11. Multiple extension bars 34 corresponding to the hangers 6 are fixed to the bottom of the connecting plates 12. Positioning blocks 35, which work in conjunction with the hangers 6, are fixed to one side of the extension bars 34 to prevent the substrate from shaking or falling off during processing. Specifically, the two connecting plates 12 are designed to be uneven, which allows the substrate to tilt during the lifting process, allowing for more comprehensive contact with the liquid in the tank and improving cleaning efficiency.

[0053] The specific structure of the hanger 6 includes a fixed bar 18 fixed to the outside of the chain 5, and a slider 19 is fixedly set on one side of the fixed bar 18. A sliding frame 20 is slidably set on the outer wall of the slider 19, and a hook 23 is fixedly set at the bottom of the sliding frame 20 for hanging the substrate. Two second guide rods 21 are slidably set through the top of the slider 19, and these two second guide rods 21 are fixed in the sliding frame 20. The outer wall of the second guide rod 21 is sleeved with a first spring 22, and the two ends of the first spring 22 are fixedly connected to the top of the slider 19 and the top wall of the sliding frame 20 respectively. After the positioning block 35 moves upward, the hook 23 can drive the substrate to move upward under the action of the first spring 22.

[0054] During the cleaning process, multiple cleaning mechanisms are installed to more effectively clean the substrate. These cleaning mechanisms are located in the first water washing tank 25, the degreasing tank 26, the second water washing tank 27, the third water washing tank 28, the conversion tank 29, the fourth water washing tank 30, and the fifth water washing tank 31, respectively, and are used in conjunction with the lifting mechanism. The specific structure of the cleaning mechanism includes a cylinder 14 arranged on one side of one of the support frames 1, with a piston rod 15 slidingly mounted within the cylinder 14. The piston rod 15 is connected to the corresponding connecting plate 12 by a connecting rod 13, so that when the connecting plate 12 is raised or lowered, it can drive the piston rod 15 to slide within the cylinder 14. One side of the cylinder 14 is connected to an air intake pipe 16 for air intake. The air intake pipe 16 is provided with a first one-way valve 17 to control the entry of air. The other side of the cylinder 14 is connected to a nozzle 32, which is provided with a second one-way valve 33 to control the ejection of air. One end of the nozzle 32 extends into the box body 24. When the piston rod 15 slides out of the cylinder body 14, gas can be ejected through the nozzle 32. During the jetting process, bubbles can be generated in the liquid to purge the substrate.

[0055] Example 2

[0056] refer to Figure 1-Figure 7This embodiment is an improvement based on Example 1: To further enhance the cleaning effect, the structure within the nozzle 32 has been specially designed. A fixed plate 36 and multiple guide plates 37 are fixedly disposed within the nozzle 32. A common sliding rod 38 is slidably mounted on one side of each of the multiple guide plates 37. A sealing plate 39 is fixedly mounted at one end of the sliding rod 38, which contacts the fixed plate 36. One end of the sliding rod 38 is also drivingly connected to a corresponding extension bar 34. When the extension bar 34 rises and falls with the connecting plate 12, it drives the sliding rod 38 and sealing plate 39 to move. Multiple through-holes 40 are defined on one side of the guide plate 37, the fixed plate 36, and the sealing plate 39. The through-holes 40 on the fixed plate 36 and the sealing plate 39 are offset from each other to seal one end of the nozzle 32. When the sealing plate 39 separates from the fixed plate 36, the through-holes open, allowing gas to be ejected. When the sealing plate 39 contacts the fixed plate 36, the through-holes close, preventing gas from being ejected. This design allows the ejected gas to be more concentrated and powerful, enhancing the cleaning effect.

[0057] In addition, a third guide rod 42 is slidably provided at the other end of the sliding rod 38, and the other end of the third guide rod 42 is fixedly connected to the other end of the rotating shaft 3. A second spring 43 is sleeved on the outer wall of the third guide rod 42, and the two ends of the second spring 43 are respectively fixedly connected to the inner wall of one side of the rotating shaft 3 and one end of the sliding rod 38. This design can provide additional reset force for the sliding rod 38, ensuring that it can accurately return to its initial position. At the same time, a wedge bar 41 used in conjunction with the extension bar 34 is slidably provided in the nozzle 32, and the bottom end of the wedge bar 41 is fixedly connected to the sliding rod 38. When the extension bar 34 is raised or lowered, the sliding rod 38 can be driven to move by the wedge bar 41, thereby realizing the opening and closing of the sealing plate 39.

[0058] In the present application, when in use, the device is powered on, and an appropriate amount of cleaning agent is added to the first water washing tank 25, the second water washing tank 27, the third water washing tank 28, the fourth water washing tank 30 and the fifth water washing tank 31, and an appropriate amount of acid stripping agent is added to the degreasing tank 26, and an appropriate amount of film-forming agent is added to the conversion tank 29;

[0059] Then, the substrate after re-inspection is placed on the corresponding two hooks 23, and the motor 7 is started again to drive the rotating shaft 3 to rotate. During the rotation of the rotating shaft 3, the chain 5 can be driven to move through the sprocket 4, and the hook 23 can be driven to move to the top of the first washing tank 25. The electric push rod 9 is started again to extend. The electric push rod 9 is extended to drive the connecting frame 11 to move downward. The downward movement of the connecting frame 11 can drive the two sets of extension bars 34 to move downward through the two first springs 22. During the movement, the positioning block 35 can contact the substrate and drive the substrate to move downward. At the same time, the hook 23 is driven downward by the substrate. The downward movement of the hook 23 can drive the sliding frame 20 to move downward and compress the first spring 22. At the same time, due to the height difference between the two sets of extension bars 34, the substrate is tilted during the downward pressure until the substrate is completely immersed in the cleaning agent.

[0060] When the connecting plate 12 moves downward, the piston rod 15 can be driven downward by the connecting rod 13 to compress the air in the cylinder 14. When the extension bar 34 moves into place, it will interfere with the movement of the wedge bar 41. The movement of the wedge bar 41 can drive the sliding rod 38 to move. The movement of the sliding rod 38 can drive the sealing plate 39 away from the sliding rod 38. At this time, the compressed air in the cylinder 14 will be ejected through the nozzle 32 to generate bubbles, which are used to clean the substrate.

[0061] After cleaning is completed, start the electric push rod 9 to retract, drive the connecting plate 12 to move upward until it rises to a safe height, and then start the motor 7 to drive the substrate to move, and perform water washing → degreasing → water washing → water washing → conversion → water washing → water washing in sequence.

[0062] However, as is well known to those skilled in the art, the working principles and wiring methods of the motor 7 and the electric push rod 9 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0063] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A production process for powder-spraying aluminum alloy profiles, characterized in that: The following steps are involved: S1. Manually re-inspect the substrate for defects; S2. Hang it in a cleaning machine and use the cleaning machine to wash → degrease → wash → wash → convert → wash → wash → drain; S3, then use the dryer to dry → cool; S4, then conduct quality inspection by manual unloading; S5. Manually place the workpiece on the spraying machine for air blowing and dust removal → electrostatic powder spraying → powder solidification → cooling; S6. Finally, the products are manually unloaded → quality inspection → laminating → packaging → measurement and shipped out.

2. The production process of a powder-sprayed aluminum alloy profile according to claim 1, characterized in that: The cleaning machine comprises two support frames (1), a same box (24) is fixedly provided between the two support frames (1), and the box (24) is provided with a first water washing tank (25), a degreasing tank (26), a second water washing tank (27), a third water washing tank (28), a conversion tank (29), a fourth water washing tank (30) and a fifth water washing tank (31) for washing, degreasing, washing, washing, converting, washing and washing the substrate in sequence; Two rotating shafts (3) are provided between the two support frames (1) for rotation, two sprockets (4) are fixedly provided on the outer wall of the rotating shaft (3), and the corresponding two sprockets (4) are connected to the same chain (5) for transmission, and the chain (5) is provided with a plurality of hangers (6) for hanging substrates, and a motor (7) is fixedly provided on one side of one of the support frames (1), and the output end of the motor (7) is fixedly connected to the corresponding rotating shaft (3) for driving the substrate to move; A lifting mechanism is provided above the material platform (2) and is used to drive the substrate to be immersed in the liquid below; Multiple cleaning mechanisms are respectively arranged in the first water washing tank (25), the degreasing tank (26), the second water washing tank (27), the third water washing tank (28), the conversion tank (29), the fourth water washing tank (30) and the fifth water washing tank (31), and are used in conjunction with the lifting mechanism to clean the substrate.

3. The production process of a powder-sprayed aluminum alloy profile according to claim 2, characterized in that: The lifting mechanism comprises a mounting frame (8) fixed on the top of one of the support frames (1), two first guide rods (10) are slidably provided on the top of the mounting frame (8), and the bottom of the two first guide rods (10) is fixedly provided with a same connecting frame (11), an electric push rod (9) is fixedly provided on the top of the mounting frame (8), and the output end of the electric push rod (9) is fixedly connected to the connecting frame (11), and connecting plates (12) are fixedly provided on both sides of the connecting frame (11), and a plurality of extension strips (34) corresponding to the hanger (6) are fixedly provided on the bottom of the connecting plate (12), and a positioning block (35) used in conjunction with the hanger (6) is fixedly provided on one side of the extension strip (34) for limiting the substrate.

4. The production process of a powder-sprayed aluminum alloy profile according to claim 3, characterized in that: The two connecting plates (12) are arranged in a high and low shape and are used to drive the substrate to tilt.

5. The production process of a powder-sprayed aluminum alloy profile according to claim 2, characterized in that: The hanger (6) includes a fixed bar (18) fixed on the outside of the chain (5), a slider (19) is fixed on one side of the fixed bar (18), a sliding frame (20) is slidably provided on the outer wall of the slider (19), a hook (23) is fixedly provided on the bottom of the sliding frame (20), two second guide rods (21) are slidably provided through the top of the slider (19), the second guide rods (21) are fixed in the sliding frame (20), and a first spring (22) is sleeved on the outer wall of the second guide rod (21), and the two ends of the first spring (22) are fixedly connected to the top of the slider (19) and the top wall of the sliding frame (20), respectively.

6. The production process of a powder-sprayed aluminum alloy profile according to claim 3, characterized in that: The cleaning mechanism comprises a cylinder (14) arranged on one side of one of the support frames (1), a piston rod (15) being slidably arranged in the cylinder (14), the piston rod (15) being connected to the corresponding connecting plate (12) via a connecting rod (13), one side of the cylinder (14) being connected to an air intake pipe (16) for air intake, the air intake pipe (16) being provided with a first one-way valve (17), the other side of the cylinder (14) being connected to a nozzle (32), the nozzle (32) being provided with a second one-way valve (33), and one end of the nozzle (32) extending into the box (24).

7. The production process of a powder-sprayed aluminum alloy profile according to claim 6, characterized in that: A fixed plate (36) is fixedly provided in the nozzle (32), and a plurality of guide plates (37) are fixedly provided in the nozzle (32). A same sliding rod (38) is slidably provided on one side of the plurality of guide plates (37). A sealing plate (39) that contacts the fixed plate (36) is fixedly provided on one end of the sliding rod (38). One end of the sliding rod (38) is transmission-connected with a corresponding extension bar (34) for driving the sealing plate (39) away from the fixed plate (36). A plurality of through holes (40) are provided on one side of the guide plate (37), the fixed plate (36) and the sealing plate (39). The through holes (40) on the fixed plate (36) and the sealing plate (39) are mutually offset for sealing one end of the nozzle (32).

8. The production process of a powder-sprayed aluminum alloy profile according to claim 7, characterized in that: A third guide rod (42) is slidably provided at the other end of the sliding rod (38), and the other end of the third guide rod (42) is fixedly connected to the other end of the rotating shaft (3). A second spring (43) is sleeved on the outer wall of the third guide rod (42), and the two ends of the second spring (43) are respectively fixedly connected to the inner wall of one side of the rotating shaft (3) and one end of the sliding rod (38). A wedge strip (41) used in conjunction with the extension strip (34) is slidably provided in the nozzle (32), and the bottom end of the wedge strip (41) is fixedly connected to the sliding rod (38).

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