Aluminum alloy profile surface treatment equipment and treatment process

Abstract

The invention discloses aluminum alloy profile surface treatment equipment and a treatment process, and belongs to the technical field of aluminum profile surface treatment.The aluminum alloy profile surface treatment equipment comprises a mounting frame, a containing frame and a plurality of treatment boxes used for containing surface treatment solutions; a movable frame is slidably mounted on the mounting frame in the width direction of the treatment box, a transverse plate is slidably mounted on the movable frame in the vertical direction, the placement frame comprises a plurality of placement plates, placement grooves used for placing aluminum profiles are formed in the top surfaces of the placement plates, rollers are mounted at the bottom of the placement frame, and the placement plates are movably mounted in the placement grooves. Two parallel bearing plates are installed on the transverse plate, a plurality of inserting rods are installed on the bearing plates and can be inserted into through grooves of aluminum profiles, and an adjusting assembly used for adjusting the distance between the two bearing plates is arranged on the transverse plate. According to the aluminum profile surface treatment device, a solution can make full contact with the outer surface of an aluminum profile, and the surface treatment effect on the aluminum profile is improved.

Description

Technical Field

[0001] This application relates to the technical field of surface treatment of aluminum profiles, and particularly relates to an aluminum alloy profile surface treatment device and a treatment process. Background Technique

[0002] Under the background of the global energy structure accelerating the transformation to clean energy, the photovoltaic industry is experiencing unprecedented rapid development. As a key part of the photovoltaic power generation system that directly converts solar energy into electrical energy, the performance of photovoltaic modules directly determines the efficiency and stability of the power generation system. Aluminum alloy, with its low density, high strength, and good processing plasticity, has become an ideal choice to support and protect photovoltaic modules. However, in the face of a complex environment with humidity and rich in acid-base substances, aluminum alloy is extremely prone to corrosion reactions, so its surface needs to be treated.

[0003] Processes such as anodic oxidation and electrophoretic coating are commonly used means for surface treatment of aluminum alloy. An optimized surface treatment process can significantly enhance the corrosion resistance of the aluminum alloy frame, enabling it to maintain good physical properties in harsh environments. When aluminum profiles are subjected to surface treatment, steel ropes are usually used to tie the two ends of the aluminum profiles, and then lifting tools are used to lift the aluminum profiles. Therefore, it is necessary for workers to set the steel ropes around the outer circumference of the aluminum profiles, resulting in low efficiency. Summary of the Invention

[0004] In order to improve the problem of low lifting efficiency of aluminum profiles, this application provides an aluminum alloy profile surface treatment device and a treatment process.

[0005] An aluminum alloy profile surface treatment device and a treatment process provided by this application adopt the following technical solutions:

[0006] An aluminum alloy profile surface treatment device includes a mounting frame, a placement frame, and several treatment tanks for containing surface treatment solutions. A moving frame is slidably mounted on the mounting frame along the width direction of the treatment tank. A cross plate is slidably mounted on the moving frame in the vertical direction. The placement frame includes several placement plates. A placement groove for placing aluminum profiles is formed on the top surface of the placement plate. Rollers are installed at the bottom of the placement frame. Two parallel bearing plates are installed on the cross plate. Several insertion rods are installed on the bearing plates. The insertion rods can be inserted into the through grooves of the aluminum profiles. An adjusting component for adjusting the distance between the two bearing plates is provided on the cross plate.

[0007] By adopting the above technical solution, the placement rack is moved to a position close to the cross plate, so that the two bearing plates are respectively located on both sides of the placement plate. The insertion rod is aligned with the aluminum profile on the placement plate, and the adjustment assembly is used to move the two cross plates towards the direction close to the aluminum profile, so that the insertion rod is inserted into the through groove of the aluminum profile, thereby realizing the clamping of the aluminum profile. Then, the cross plate is moved upward and along the length direction of the installation rack, and the aluminum profiles are successively immersed in the solution in the treatment tank for surface treatment of the aluminum profiles. Since the insertion rod is located in the through groove of the aluminum profile, the solution can fully contact the outer surface of the aluminum profile, improving the surface treatment effect of the aluminum profile.

[0008] Preferably, the two bearing plates are respectively a fixed plate and a sliding plate. The adjustment assembly includes a fixed block sleeved and fixed on the outer periphery of the cross plate and a moving block slidably installed on the cross plate. The top of the fixed plate is fixedly connected to the top surface of the fixed block, the sliding plate is installed on the moving block, and a first cylinder is installed on the cross plate. The end of the piston rod of the first cylinder is fixedly connected to the side surface of the moving block.

[0009] By adopting the above technical solution, the fixed plate and the sliding plate are respectively located on both sides of the cross plate. First, the insertion rod on the fixed plate is inserted into the through groove of the adjacent aluminum profile, and then the first cylinder is started. The first cylinder drives the sliding plate to move towards the direction close to the aluminum profile, so that the insertion rod on the sliding plate is inserted into the through groove of the aluminum profile, thereby transporting the aluminum profile on the placement rack to the cross plate.

[0010] Preferably, a moving through groove for passing through the sliding plate is formed in the bottom surface of the moving block, a second cylinder is installed on the moving block, a synchronous block is fixed at the top end of the sliding plate, and the top end of the piston rod of the second cylinder is fixedly connected to the synchronous block.

[0011] By adopting the above technical solution, the second cylinder is started. The second cylinder drives the sliding plate to move upward, and the sliding plate drives one end of the aluminum profile to move upward through the insertion rod, so that the aluminum profile is inclined, ensuring that the gas can be fully discharged during the immersion process of the aluminum profile.

[0012] Preferably, an installation through groove is formed in the side surface of the bearing plate, rotating rods are respectively fixed on the opposite inner sides of the installation through groove, the insertion rod is sleeved on the outer periphery of the rotating rod, the insertion rod is rotatably connected to the rotating rod, and the two insertion rods are respectively in contact with the inner walls of the through grooves of the aluminum profile.

[0013] By adopting the above technical solution, the two insertion rods are inserted into the through grooves of the aluminum profile and are in contact with the opposite inner sides of the through grooves, making the connection between the aluminum profile and the bearing plate more stable.

[0014] Preferably, a torsion spring is sleeved on the outer periphery of the rotating rod. One end of the torsion spring is fixedly connected to the outer peripheral surface of the rotating rod, and the other end of the torsion spring is fixedly connected to the inner wall of the installation through groove. The insertion rod includes a first limiting rod installed on the fixed plate and a second limiting rod installed on the sliding plate. A plurality of first limiting blocks are fixed on the fixed plate. One end of the first limiting rod away from the aluminum profile can abut against the bottom surface of the first limiting block. A plurality of second limiting blocks are fixed on the sliding plate. One end of the second limiting rod away from the aluminum profile can abut against the top surface of the second limiting block.

[0015] By adopting the above technical solution, when installing the aluminum profile, the first limiting rod abuts against the bottom surface of the first limiting block under the elastic force of the torsion spring, and the second limiting rod abuts against the top surface of the second limiting block under the elastic force of the torsion spring, so that both the first limiting rod and the second limiting rod are in a horizontal state, facilitating the insertion rod to enter the through groove of the aluminum profile; when performing surface treatment on the aluminum profile, the sliding plate drives the second limiting rod to move upward, making one end of the aluminum profile close to the second limiting rod tilt upward, and at the same time driving the first limiting rod to rotate upward and the second limiting rod to rotate downward, so that the insertion rod is always located in the through groove of the aluminum profile to stably clamp the aluminum profile.

[0016] Preferably, a telescopic rod is hinged to the bottom of the fixed plate, and a telescopic sleeve is hinged to the bottom of the sliding plate. The telescopic sleeve is sleeved on the outer periphery of the telescopic rod. A first positioning hole is formed in the outer peripheral surface of the telescopic sleeve, and a pin is inserted into the first positioning hole. A second positioning hole for inserting the pin is formed in the outer peripheral surface of the telescopic rod.

[0017] By adopting the above technical solution, after the aluminum profile is installed on the bearing plate, the pin is inserted into the second positioning hole, so that when the sliding plate moves upward, the fixed plate and the sliding plate always maintain a parallel state.

[0018] Preferably, two limiting plates are fixed on the treatment box. A material receiving box is slidably installed between the two limiting plates along the length direction of the treatment box. A cylinder three is fixed on the limiting plate, and the end of the piston rod of the cylinder three is fixedly connected to the side surface of the material receiving box. The material receiving box is located on the side of the treatment box close to the fixed plate.

[0019] By adopting the above technical solution, when the aluminum profile is soaked in the treatment box and moves upward, the cylinder three is started, and the cylinder three drives the material receiving box to move, so that the material receiving box is located directly below the fixed plate, and the redundant solution on the aluminum profile falls into the material receiving box, reducing the possibility of mutual contamination between the solutions.

[0020] Preferably, the mounting bracket includes a first linear guide rail arranged horizontally, the moving bracket includes a connecting plate, two second linear guide rails arranged vertically are fixed to the bottom surface of the connecting plate, a sliding block is fixed to the side surface of the second linear guide rail, the sliding block is slidably mounted on the first linear guide rail, a moving plate is slidably mounted on the two second linear guide rails in the vertical direction, a plurality of connecting blocks are fixed to the bottom of the moving plate, a groove is formed on the top surface of the connecting block, and the cross plate can be placed in the groove.

[0021] By adopting the above technical solutions, the moving bracket drives the cross plate to move along the length direction of the first linear guide rail, so as to facilitate the aluminum profiles to enter several treatment tanks in sequence for soaking, and the moving plate drives the cross plate to move vertically on the second linear guide rail, so as to facilitate the aluminum profiles to enter the treatment tank downward.

[0022] A surface treatment process for aluminum alloy profiles includes the following steps:

[0023] S1. Degreasing treatment: Place the aluminum alloy frame profiles in a dilute sulfuric acid solution with a concentration of 100-160 g / L for 1-3 minutes.

[0024] S2. Alkali etching treatment: Place the profiles after degreasing treatment in a sodium hydroxide solution with a concentration of 40-50 g / L, control the temperature at 40-50 °C, and the treatment time is 1-6 minutes to remove the natural oxide film and slight scratches on the surface of the profiles.

[0025] S3. Neutralization treatment: Place the profiles after alkali etching treatment in a sulfuric acid solution with a concentration of 180-220 g / L for 2-5 minutes to remove the residual ash on the surface of the profiles and make the surface of the profiles show a uniform silver-gray color.

[0026] S4. Anodic oxidation operation: Take the pre-treated aluminum alloy frame profiles as the anode and the aluminum plate as the cathode, put them into the anodic oxidation tank, connect the power supply, under the action of direct current, an oxidation reaction occurs at the anode, aluminum atoms lose electrons and become aluminum ions and enter the solution, and at the same time, an alumina film is formed on the surface of the profiles. The anodic oxidation voltage is generally controlled at 16-18 V, and the current density is 110-150 A / m 2 , and the oxidation time is determined according to the required film thickness, usually 20-60 minutes.

[0027] S5. Sealing treatment: Put the profiles after anodic oxidation into hot water at a temperature of 50-70 °C, the sealing time is 15-30 minutes, and the sealing agent is selected as nickel acetate. In hot water, hydroxides are generated and filled in the pores to achieve the purpose of sealing.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. Move the placement rack to a position close to the cross plate so that the two bearing plates are located on both sides of the placement plate. Align the insertion rod with the aluminum profile on the placement plate, and use the adjustment component to move the two cross plates towards the aluminum profile, so that the insertion rod is inserted into the through groove of the aluminum profile, thereby realizing the clamping of the aluminum profile. Then move the cross plate upward and along the length direction of the mounting rack, and immerse the aluminum profiles in the solution of the treatment tank in sequence to perform surface treatment on the aluminum profiles. Since the insertion rod is located in the through groove of the aluminum profile, the solution can fully contact the outer surface of the aluminum profile, improving the surface treatment effect of the aluminum profile;

[0030] 2. Place the fixed plate and the sliding plate on both sides of the cross plate respectively. First, insert the insertion rod on the fixed plate into the through groove of the adjacent aluminum profile, and then start the first cylinder. The first cylinder drives the sliding plate to move towards the aluminum profile, so that the insertion rod on the sliding plate is inserted into the through groove of the aluminum profile, thereby transferring the aluminum profiles on the placement rack to the cross plate;

[0031] 3. When installing the aluminum profile, the first limiting rod abuts against the bottom surface of the first limiting block under the elastic force of the torsion spring, and the second limiting rod abuts against the top surface of the second limiting block under the elastic force of the torsion spring, so that both the first limiting rod and the second limiting rod are in a horizontal state, facilitating the insertion rod to enter the through groove of the aluminum profile; when performing surface treatment on the aluminum profile, the sliding plate drives the second limiting rod to move upward, so that one end of the aluminum profile close to the second limiting rod is inclined upward, and at the same time drives the first limiting rod to rotate upward and the second limiting rod to rotate downward, so that the insertion rod is always located in the through groove of the aluminum profile, realizing stable clamping of the aluminum profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0033] Figure 2 is the structural schematic diagram of the material receiving box in the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0034] Figure 3 is the structural schematic diagram of the moving rack in the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0035] Figure 4 is the structural schematic diagram of the placement rack in the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0036] Figure 5 is the structural schematic diagram of the cross plate and the bearing plate in the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0037] Figure 6 is the structural schematic diagram of the fixed plate and the sliding plate in the surface treatment equipment for aluminum alloy profiles in the embodiment of the present application.

[0038] Figure 7 It is a schematic structural diagram of a telescopic rod and a telescopic sleeve in the surface treatment equipment for aluminum alloy profiles according to an embodiment of the present application.

[0039] Reference numerals: 1, mounting frame; 11, linear guide rail I; 12, sliding block; 13, treatment tank; 2, moving frame; 21, connecting plate; 22, linear guide rail II; 23, moving plate; 24, connecting block; 241, groove; 3, placing rack; 31, placing plate; 32, placing groove; 33, roller; 34, bottom plate; 35, mounting plate; 4, cross plate; 41, cylinder I; 42, cylinder II; 5, bearing plate; 51, fixing plate; 511, limiting block I; 52, sliding plate; 521, limiting block II; 53, inserting rod; 531, limiting rod I; 532, limiting rod II; 54, fixing block; 55, moving block; 56, moving through groove; 57, synchronizing block; 58, mounting through groove; 59, rotating rod; 591, torsion spring; 6, telescopic rod; 61, telescopic sleeve; 62, positioning hole I; 63, pin; 64, positioning hole II; 7, receiving box; 71, limiting plate; 72, cylinder III. Detailed implementation manners

[0040] The following details the implementation manners of the present application, and examples of the implementation manners are shown in the drawings.

[0041] In the description of this specification, the description referring to terms "certain implementation manners", "one implementation manner", "some implementation manners", "schematic implementation manners", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the implementation manner or example are included in at least one implementation manner or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same implementation manner or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more implementation manners or examples.

[0042] An embodiment of the present application discloses a surface treatment equipment and a treatment process for aluminum alloy profiles. Referring to Figure 1 and Figure 2 , the surface treatment equipment for aluminum alloy profiles includes a mounting frame 1, a placing rack 3, and several treatment tanks 13 for containing surface treatment solutions. Various solutions for surface treatment of aluminum profiles and an aqueous solution for cleaning the soaked aluminum profiles are placed in the treatment tank 13. Two limiting plates 71 are fixed on the treatment tank 13, and a receiving box 7 is slidably mounted between the two limiting plates 71 along the length direction of the treatment tank 13. A cylinder III 72 is fixed on the limiting plate 71, and the end of the piston rod of the cylinder III 72 is fixedly connected to the side surface of the receiving box 7.

[0043] Referring to Figure 3, the mounting frame 1 includes two horizontally arranged linear guide rails 11, the moving frame 2 includes a connecting plate 21, and two vertically arranged linear guide rails 22 are fixed to the bottom surface of the connecting plate 21. A sliding block 12 is fixed to the bottom of the linear guide rail 22, and the sliding block 12 is slidably mounted on the linear guide rail 11. A moving plate 23 is slidably mounted on the two linear guide rails 22 in the vertical direction, and a cross plate 4 is mounted on the moving frame 2. A plurality of connecting blocks 24 are fixed to the side surface of the moving plate 23, a groove 241 is formed in the top surface of the connecting block 24, and the cross plate 4 can be placed in the groove 241.

[0044] The moving frame 2 drives the cross plate 4 to move along the length direction of the linear guide rail 11, so that the aluminum profiles can enter several treatment boxes 13 in sequence for soaking. The moving plate 23 drives the cross plate 4 to move vertically on the linear guide rail 22, so that the aluminum profiles can enter the treatment box 13 downward.

[0045] Refer to Figure 4 , the placing frame 3 includes a horizontally arranged bottom plate 34, and rollers 33 are installed around the bottom surface of the bottom plate 34. A vertically arranged mounting plate 35 is fixed to the top surface of the bottom plate 34, and a plurality of placing plates 31 are fixed to the side surface of the mounting plate 35. The plurality of placing plates 31 are arranged at equal intervals in the vertical direction, and a placing groove 32 for placing the aluminum profiles is formed in the top surface of the placing plate 31, and the inner bottom surface of the placing groove 32 is set as an inclined surface.

[0046] Refer to Figure 5 and Figure 6 , two parallel bearing plates 5 are mounted on the cross plate 4, and a plurality of inserting rods 53 are mounted on the bearing plates 5. The inserting rods 53 can be inserted into the through grooves of the aluminum profiles. The two bearing plates 5 are respectively a fixed plate 51 and a sliding plate 52. A fixing block 54 is sleeved and fixed on the outer periphery of the cross plate 4, and the top of the fixed plate 51 is fixedly connected to the top surface of the fixing block 54. A moving block 55 is slidably mounted on the cross plate 4 in the horizontal direction, and a cylinder 41 is mounted on the cross plate 4. The end of the piston rod of the cylinder 41 is fixedly connected to the side surface of the moving block 55. A moving through groove 56 for passing through the sliding plate 52 is formed in the bottom surface of the moving block 55. A cylinder 42 is mounted on the moving block 55. A synchronous block 57 is fixed to the top end of the sliding plate 52, and the top end of the piston rod of the cylinder 42 is fixedly connected to the synchronous block 57.

[0047] The fixed plate 51 and the sliding plate 52 are respectively located on both sides of the cross plate 4. First, insert the insertion rod 53 on the fixed plate 51 into the through groove of the adjacent aluminum profile, and then start the first cylinder 41. The first cylinder 41 drives the sliding plate 52 to move towards the aluminum profile, so that the insertion rod 53 on the sliding plate 52 is inserted into the through groove of the aluminum profile, thereby transferring the aluminum profile on the placement rack 3 to the cross plate 4. Start the second cylinder 42. The second cylinder 42 drives the sliding plate 52 to move upward. The sliding plate 52 drives one end of the aluminum profile to move upward through the insertion rod 53, so that the aluminum profile is inclined, ensuring that the aluminum profile can fully discharge gas during the soaking process. After the aluminum profile is soaked in the treatment tank 13 and moves upward, start the third cylinder 72. The third cylinder 72 drives the receiving box 7 to move, so that the receiving box 7 is located directly below the fixed plate 51, so that the excess solution on the aluminum profile falls into the receiving box 7, reducing the possibility of mutual contamination between the solutions.

[0048] Refer to Figure 5 and Figure 6 As shown in FIGS. 5 and 6, an installation through groove 58 is formed on the side surface of the bearing plate 5. Rotating rods 59 are respectively fixed on the opposite inner sides of the installation through groove 58. The insertion rod 53 is sleeved on the outer periphery of the rotating rod 59, and the insertion rod 53 is rotatably connected to the rotating rod 59. The two insertion rods 53 are respectively in contact with the inner wall of the through groove of the aluminum profile, making the connection between the aluminum profile and the bearing plate 5 more stable. A torsion spring 591 is sleeved on the outer periphery of the rotating rod 59. One end of the torsion spring 591 is fixedly connected to the outer peripheral surface of the rotating rod 59, and the other end of the torsion spring 591 is fixedly connected to the inner wall of the installation through groove 58. The insertion rod 53 includes a first limiting rod 531 installed on the fixed plate 51 and a second limiting rod 532 installed on the sliding plate 52. A plurality of first limiting blocks 511 are fixed on the fixed plate 51, and the end of the first limiting rod 531 away from the aluminum profile can abut against the bottom surface of the first limiting block 511. A plurality of second limiting blocks 521 are fixed on the sliding plate 52, and the end of the second limiting rod 532 away from the aluminum profile can abut against the top surface of the second limiting block 521.

[0049] When installing the aluminum profile, the first limiting rod 531 abuts against the bottom surface of the first limiting block 511 under the elastic force of the torsion spring 591, and the second limiting rod 532 abuts against the top surface of the second limiting block 521 under the elastic force of the torsion spring 591, so that both the first limiting rod 531 and the second limiting rod 532 are in a horizontal state, facilitating the insertion rod 53 to enter the through groove of the aluminum profile. When performing surface treatment on the aluminum profile, the sliding plate 52 drives the second limiting rod 532 to move upward, so that one end of the aluminum profile close to the second limiting rod 532 is inclined upward. At the same time, it drives the first limiting rod 531 to rotate upward and the second limiting rod 532 to rotate downward, so that the insertion rod 53 is always located in the through groove of the aluminum profile, stably clamping the aluminum profile.

[0050] Refer to Figure 5 and Figure 7, a telescopic rod 6 is hinged to the bottom of the fixed plate 51, and a telescopic sleeve 61 is hinged to the bottom of the sliding plate 52. The telescopic sleeve 61 is sleeved on the outer periphery of the telescopic rod 6. A first positioning hole 62 is formed on the outer peripheral surface of the telescopic sleeve 61, and a pin 63 is inserted into the first positioning hole 62. A second positioning hole 64 for inserting the pin 63 is formed on the outer peripheral surface of the telescopic rod 6. After the aluminum profile is installed on the bearing plate 5, the pin 63 is inserted into the second positioning hole 64, so that the fixed plate 51 and the sliding plate 52 always remain parallel to each other during the upward movement of the sliding plate 52.

[0051] The implementation principle of an aluminum alloy profile surface treatment device according to an embodiment of the present application is as follows: Move the placement rack 3 to a position close to the cross plate 4, so that the two bearing plates 5 are respectively located on both sides of the placement plate 31. Align the insertion rod 53 with the aluminum profile on the placement plate 31, and then move the two cross plates 4 towards the direction close to the aluminum profile, so that the insertion rod 53 is inserted into the through groove of the aluminum profile, thereby realizing the clamping of the aluminum profile. Then move the cross plate 4 upward and move along the length direction of the mounting rack 1, and immerse the aluminum profile in the solution of the treatment tank 13 in sequence to perform surface treatment on the aluminum profile. Since the insertion rod 53 is located in the through groove of the aluminum profile, the solution can fully contact the outer surface of the aluminum profile, improving the surface treatment effect of the aluminum profile.

[0052] An aluminum alloy profile surface treatment process includes the following steps:

[0053] S1. Pretreatment stage:

[0054] (1) Degreasing treatment: Place the aluminum alloy frame profile in a dilute sulfuric acid solution, and remove impurities such as oil stains and dust on the profile surface through the sulfuric acid solution to ensure good bonding between the subsequent oxide film and the substrate. Generally, the concentration of the degreasing solution is controlled at 100-160 g / L, and the degreasing time is 1-3 minutes.

[0055] (2) Alkaline etching treatment: Place the aluminum alloy frame profile in a sodium hydroxide solution, and use the sodium hydroxide solution to perform alkaline etching on the profile to remove the natural oxide film and minor scratches and other defects on the surface. During the alkaline etching process, aluminum reacts with sodium hydroxide to generate sodium aluminate and hydrogen, thereby realizing the erosion of the surface. The concentration of the alkaline etching solution is usually 40-50 g / L, the temperature is 40-50 °C, and the time is controlled within 1-6 minutes.

[0056] (3) Neutralization treatment: Place the aluminum alloy frame profile in a sulfuric acid solution. After alkaline etching, some black hanging ash will remain on the surface of the profile, which is due to the attachment of insoluble impurities generated during the alkaline etching process on the surface. Perform neutralization treatment with a sulfuric acid solution, so that the hanging ash reacts with sulfuric acid and is removed, making the surface of the profile show a uniform silver-gray color. The sulfuric acid concentration is generally 180-220 g / L, and the treatment time is 2-5 minutes.

[0057] S2. Anodizing Stage

[0058] (1) Preparation of anodizing bath solution: Sulfuric acid is the main component, and the sulfuric acid concentration is controlled at 150 - 220 g / L. To improve the quality of the oxide film, some additives can be appropriately added, such as aluminum ion complexing agents, etc., to stabilize the bath solution composition and improve the structure of the oxide film. The bath solution temperature is controlled at 18 - 22 °C. If the temperature is too high, the dissolution rate of the oxide film will increase, affecting the film thickness and the quality of the film; if the temperature is too low, the oxidation reaction rate will slow down and the production efficiency will decrease. A flow equalizing plate and a filter plate are installed at the bottom of the oxidation bath to ensure that the temperature difference on both sides of the bath solution is small. An air stirring device is installed to ensure that the temperature difference between the upper and lower ends of the bath solution is small. Finally, the temperature difference at each position of the bath solution is controlled within 1 degree Celsius.

[0059] (2) Anodizing operation: The pre-treated aluminum alloy frame profile is used as the anode, and the aluminum plate is used as the cathode and placed in the anodizing bath. After connecting the power supply, under the action of direct current, an oxidation reaction occurs at the anode. Aluminum atoms lose electrons and turn into aluminum ions and enter the solution. At the same time, an aluminum oxide film is formed on the surface of the profile. The anodizing voltage is generally controlled at 16 - 18 V, and the current density is 110 - 150 A / m 2 , and the oxidation time depends on the required film thickness and is usually 20 - 60 minutes. During the oxidation process, it is necessary to ensure the stability of the current, which can be achieved by adjusting the power supply parameters.

[0060] S3. Post-treatment Stage

[0061] (1) Sealing treatment: The oxide film after anodizing has a porous structure and is easy to adsorb impurities, affecting corrosion resistance and insulation. Sealing treatment is to close these pores and improve the performance of the oxide film. The medium-temperature sealing method is adopted. The oxidized profile is placed in hot water at 50 - 70 °C, and the sealing time is 15 - 30 minutes. Nickel acetate is selected as the sealing agent. In hot water, hydroxides are generated and filled in the pores, thus achieving the purpose of sealing.

[0062] (2) Dyeing treatment: If a frame with a specific color is required, dyeing treatment can be carried out before sealing. The oxidized profile is placed in a dyeing bath containing a metal salt solution, and metal ions enter the pores of the oxide film through adsorption, thus presenting the required color. The dyeing time and temperature depend on the color depth and the type of dye. For example, when dyeing black, the profile can be placed in a solution containing nickel salt and cobalt salt, and the dyeing time is 10 - 20 minutes.

[0063] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An aluminum alloy profile surface treatment device, characterized in that: It includes a mounting frame (1), a placement frame (3) and several treatment tanks (13) for containing surface treatment solutions. A moving frame (2) is slidably mounted on the mounting frame (1) along the width direction of the treatment tank (13). A cross plate (4) is slidably mounted on the moving frame (2) vertically. The placement frame (3) includes several placement plates (31). A placement groove (32) for placing aluminum profiles is formed on the top surface of the placement plate (31). Rollers (33) are installed at the bottom of the placement frame (3). Two parallel bearing plates (5) are installed on the cross plate (4). Several insertion rods (53) are installed on the bearing plates (5). The insertion rods (53) can be inserted into the through grooves of the aluminum profiles. An adjusting component for adjusting the distance between the two bearing plates (5) is arranged on the cross plate (4).

2. An aluminum alloy profile surface treatment device according to claim 1, characterized in that: The two bearing plates (5) are respectively a fixed plate (51) and a sliding plate (52). The adjusting component includes a fixed block (54) sleeved and fixed on the outer periphery of the cross plate (4) and a moving block (55) slidably mounted on the cross plate (4). The top of the fixed plate (51) is fixedly connected to the top surface of the fixed block (54). The sliding plate (52) is installed on the moving block (55). A cylinder one (41) is installed on the cross plate (4). The end of the piston rod of the cylinder one (41) is fixedly connected to the side surface of the moving block (55).

3. An aluminum alloy profile surface treatment device according to claim 2, characterized in that: A moving through groove (56) for passing through the sliding plate (52) is formed on the bottom surface of the moving block (55). A cylinder two (42) is installed on the moving block (55). A synchronous block (57) is fixed at the top end of the sliding plate (52). The top end of the piston rod of the cylinder two (42) is fixedly connected to the synchronous block (57).

4. An aluminum alloy profile surface treatment device according to claim 3, characterized in that: Mounting through grooves (58) are formed on the side surfaces of the bearing plates (5). Rotating rods (59) are respectively fixed on the opposite inner sides of the mounting through grooves (58). The insertion rods (53) are sleeved on the outer peripheries of the rotating rods (59). The insertion rods (53) are rotatably connected to the rotating rods (59). The two insertion rods (53) are respectively in contact with the inner walls of the through grooves of the aluminum profiles.

5. The surface treatment equipment for an aluminum alloy profile according to claim 4, characterized in that: A torsion spring (591) is sleeved on the outer periphery of the rotating rod (59). One end of the torsion spring (591) is fixedly connected to the outer peripheral surface of the rotating rod (59). The other end of the torsion spring (591) is fixedly connected to the inner wall of the mounting through groove (58). The insertion rod (53) includes a limiting rod one (531) installed on the fixed plate (51) and a limiting rod two (532) installed on the sliding plate (52). Several limiting blocks one (511) are fixed on the fixed plate (51). The end of the limiting rod one (531) away from the aluminum profile can abut against the bottom surface of the limiting block one (511). Several limiting blocks two (521) are fixed on the sliding plate (52). The end of the limiting rod two (532) away from the aluminum profile can abut against the top surface of the limiting block two (521).

6. The surface treatment equipment for aluminum alloy profiles according to claim 2, characterized in that: The bottom of the fixed plate (51) is hinged with a telescopic rod (6), the bottom of the sliding plate (52) is hinged with a telescopic sleeve (61), the telescopic sleeve (61) is sleeved on the outer periphery of the telescopic rod (6), a first positioning hole (62) is formed on the outer peripheral surface of the telescopic sleeve (61), a pin (63) is inserted into the first positioning hole (62), and a second positioning hole (64) for inserting the pin (63) is formed on the outer peripheral surface of the telescopic rod (6).

7. An aluminum alloy profile surface treatment device according to claim 2, characterized in that: Two limiting plates (71) are fixed on the treatment box (13), a material receiving box (7) is slidably installed between the two limiting plates (71) along the length direction of the treatment box (13), a cylinder three (72) is fixed on the limiting plate (71), the end of the piston rod of the cylinder three (72) is fixedly connected with the side surface of the material receiving box (7), and the material receiving box (7) is located on one side of the treatment box (13) close to the fixed plate (51).

8. The surface treatment equipment for aluminum alloy profiles according to claim 1, characterized in that: The mounting frame (1) includes a horizontally arranged first linear guide rail (11), the moving frame (2) includes a connecting plate (21), two vertically arranged second linear guide rails (22) are fixed on the bottom surface of the connecting plate (21), a sliding block (12) is fixed at the bottom of the second linear guide rail (22), the sliding block (12) is slidably installed on the first linear guide rail (11), a moving plate (23) is slidably installed on the two second linear guide rails (22) in the vertical direction, a plurality of connecting blocks (24) are fixed on the side surface of the moving plate (23), a groove (241) is formed on the top surface of the connecting block (24), and the cross plate (4) can be placed in the groove (241).

9. A surface treatment process for aluminum alloy profiles, based on the surface treatment equipment for aluminum alloy profiles described in any one of claims 1-8, characterized in that: It includes the following steps: S1. Degreasing treatment: Place the aluminum alloy frame profile in a dilute sulfuric acid solution with a concentration of 100 - 160 g / L for 1 - 3 minutes; S2. Alkali etching treatment: Place the profile after degreasing treatment in a sodium hydroxide solution with a concentration of 40 - 50 g / L, control the temperature at 40 - 50 °C, and the treatment time is 1 - 6 minutes to remove the natural oxide film and slight scratches on the surface of the profile; S3. Neutralization treatment: Place the profile after alkali etching treatment in a sulfuric acid solution with a concentration of 180 - 220 g / L for 2 - 5 minutes to remove the residual ash on the surface of the profile and make the surface of the profile present a uniform silver - gray color; S4. Anodizing operation: Take the pre-treated aluminum alloy frame profile as the anode and the aluminum plate as the cathode, put them into the anodizing tank, connect the power supply. Under the action of direct current, an oxidation reaction occurs at the anode. Aluminum atoms lose electrons and turn into aluminum ions and enter the solution. At the same time, an alumina film is formed on the surface of the profile. The anodizing voltage is generally controlled at 16 - 18V, and the current density is 110 - 150A / m 2 , and the oxidation time depends on the required film thickness, usually 20 - 60 minutes; S5. Sealing hole treatment: Place the profile after anodic oxidation in hot water at a temperature of 50 - 70 °C, the sealing hole time is 15 - 30 minutes, the sealing agent is selected as nickel acetate, in hot water, hydroxides are generated and filled in the pores, so as to achieve the purpose of sealing the holes.

Images