Aluminum plate strip continuous cleaning and polishing device capable of weakening chromatic aberration and polishing method

Abstract

The invention discloses an aluminum plate strip continuous cleaning and polishing device capable of weakening chromatic aberration and a polishing method. The polishing device comprises an operation box, the operation box is provided with a cylindrical polishing cavity with the open top face, a first stirring mechanism and a second stirring mechanism are arranged in the operation box, stirring parts of the first stirring mechanism and the second stirring mechanism are both arranged in the polishing cavity, and the stirring direction of the first stirring mechanism and the stirring direction of the second stirring mechanism are coaxial and opposite; the aluminum plate positioning mechanism is constructed on the top face of the operation box, the aluminum plate positioning mechanism is provided with an arc-shaped clamping mechanism coaxial with the polishing cavity, and the arc-shaped clamping mechanism is used for positioning and clamping the aluminum plate and shaping the aluminum plate into an arc-shaped mechanism coaxial with the polishing cavity; the first stirring mechanism is used for stirring the polishing solution on the inner cambered surface side of the aluminum plate; the second stirring mechanism is used for stirring the polishing solution on the outer cambered surface side of the aluminum plate; the problem that the color difference reduction effect is poor when an aluminum plate strip with the poor surface pretreatment effect is chemically polished through existing chemical polishing equipment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum plate strip polishing, and in particular to an aluminum plate strip continuous cleaning and polishing device and a polishing method capable of weakening color difference. Background Art

[0002] The reasons for the color difference of aluminum sheets and strips can be analyzed from multiple aspects, including raw materials, production processes, environmental factors, etc.

[0003] Among them, chemical polishing is to immerse the aluminum plate in a chemical medium and use chemical reactions to remove the surface oxide layer, thereby restoring the gloss of the aluminum plate. This method can further improve the surface finish and uniformity.

[0004] However, in the process of chemical polishing, how to make the polishing liquid contact the surface of the aluminum strip evenly is the key to weakening the color difference of the aluminum strip. Most of the chemical media in the current chemical polishing equipment use a single disturbing chemical medium, which uses the disordered flow of the chemical medium to make it contact with a large area of ​​the aluminum plate, so that the filter plate can be in more uniform contact with the chemical medium. In addition, in the current chemical polishing process, if the surface roughness of the aluminum strip is uneven during the pre-treatment of the plate, this will seriously affect the chemical polishing effect of the chemical medium on the surface of the aluminum strip. Summary of the invention

[0005] The purpose of the present invention is to provide a continuous cleaning and polishing device and polishing method for aluminum plates and strips that can weaken color difference, so as to solve the problem of poor color difference reduction effect when current chemical polishing equipment performs chemical polishing on aluminum plates and strips with poor surface pretreatment effect.

[0006] In order to solve the above problems, the present invention adopts the following technical means: An aluminum plate strip polishing device capable of weakening color difference comprises: A work box is constructed with a cylindrical polishing cavity with an open top surface, the polishing cavity is filled with a chemical polishing liquid with polishing particles, and a first stirring mechanism and a second stirring mechanism are constructed in the work box, the stirring parts of the first stirring mechanism and the second stirring mechanism are both arranged in the polishing cavity, and the stirring directions of the first stirring mechanism and the second stirring mechanism are coaxial and arranged in opposite directions; An aluminum plate positioning mechanism is constructed on the top surface of the work box, and the aluminum plate positioning mechanism is constructed with an arc-shaped clamping mechanism coaxially arranged with the polishing cavity, and the arc-shaped clamping mechanism is used to position and clamp the aluminum plate, and shape the aluminum plate into an arc-shaped mechanism coaxial with the polishing cavity; The first stirring mechanism is used to stir the polishing liquid on the inner curved surface side of the aluminum plate; The second stirring mechanism is used to stir the polishing liquid on the outer curved surface side of the aluminum plate.

[0007] Preferably, the first stirring mechanism comprises a stirring paddle rotatably arranged on the bottom surface of the polishing chamber, the stirring paddle is transmission-connected to an external driving motor, and the rotation axis of the stirring paddle is coaxially arranged with the polishing chamber.

[0008] Furthermore, the second stirring mechanism includes a ventilation cavity constructed in the working box, the side wall of the polishing cavity is constructed with a plurality of ventilation channels, the axis of the ventilation channel is horizontal and is arranged off-axis with the axis of the polishing cavity, a plurality of ventilation channels are arranged equidistantly around the axis of the polishing cavity, a one-way valve is installed at the air outlet end of each ventilation channel, and the side wall of the working box is constructed with an air blow pipe connected to the ventilation cavity.

[0009] Furthermore, a plurality of baffles are provided in the ventilation cavity, and the baffles divide the ventilation cavity into a plurality of sub-cavities, each of the sub-cavities is connected to the same number of ventilation channels, and each of the sub-cavities is connected to one of the air inflation tubes.

[0010] Furthermore, the aluminum plate positioning mechanism is constructed with a pair of arc frames coaxially arranged with the polishing cavity, the two arc frames are spliced ​​to form a circular structure, the arc frames are provided with an aluminum plate positioning channel running through the axis thereof, the aluminum plate positioning channel is coaxially arranged with the polishing cavity, and an aluminum plate clamping mechanism is provided in the aluminum plate positioning channel.

[0011] Furthermore, the aluminum plate clamping mechanism includes rotating rollers arranged on the inner wall of the aluminum plate positioning channel, the rotating rollers are arranged opposite to each other, the aluminum plate is clamped between the two rotating rollers, and the roller surfaces of the rotating rollers are structured with anti-slip rubber strips.

[0012] Furthermore, a positioning column is installed on the top surface of the work box, a slider is slidably installed on the positioning column, a locking bolt is constructed between the slider and the positioning column for locking the slider, and the end of the arc frame is fixedly connected to the side wall of the slider.

[0013] Furthermore, a sealing plate is arranged between the side ends of the two aluminum plates clamped by the arc-shaped frame, and the two ends of the sealing plate are respectively constructed with vertically penetrating inlay grooves, and the side ends of the aluminum plates are embedded in the inlay grooves, and the bottom ends of the sealing plate and the bottom ends of the aluminum plates are both in contact with the bottom surface of the polishing cavity, and the inner arc surfaces of the two aluminum plates and the sealing plate structure form a first working cavity, and the outer arc surfaces of the two aluminum plates and the sealing plate and the inner wall of the polishing cavity form a second working cavity, and the first stirring mechanism acts on the first working cavity, and the second stirring mechanism acts on the second working cavity.

[0014] At the same time, a method for polishing an aluminum plate with reduced color difference is provided, wherein the aluminum plate with reduced color difference is polished by the aforementioned aluminum plate polishing device. During polishing, the aluminum plate is positioned and installed on the aluminum plate positioning mechanism, and the filter plate is placed in a bent state. A first working chamber located on the inner arc side of the aluminum plate and a second working chamber located on the outer arc side of the aluminum plate are formed in the polishing chamber. A first stirring device is used to stir the chemical polishing liquid with polishing particles in the first working chamber, and a second stirring device is used to stir the chemical polishing liquid with polishing particles in the second working chamber. The polishing liquids in the first working chamber and the second working chamber are stirred and rotated in opposite directions, and the two sides of the aluminum plate are polished for the first time. After the first polishing is completed, the aluminum plate is bent in the reverse direction and clamped in the aluminum plate positioning mechanism again, so that the inner arc surface and the outer arc surface in the first polishing are adjusted to perform the second polishing.

[0015] During use, the present invention has the following beneficial effects: By utilizing the plasticity of the aluminum strip, the aluminum strip is curled and deformed under the action of the aluminum plate positioning mechanism, so that after the bottom end of the aluminum strip abuts against the bottom surface of the polishing chamber, a first working chamber and a second working chamber filled with polishing liquid can be formed on the inner and outer arc surfaces of the aluminum strip, respectively. In this way, the polishing liquid in the first and second working chambers are stirred by the first stirring mechanism and the second stirring mechanism, respectively. In this way, the flow direction of the polishing liquid can always be in a state parallel to the curved surface of the aluminum strip. Not only can the chemical medium in the polishing liquid always be in uniform and controllable contact with the surface of the aluminum strip, but also, precisely because the flow direction of the polishing liquid is parallel to the surface of the aluminum strip, the polishing particles in the polishing liquid can also finely polish the surface of the aluminum strip, even if there are local minor defects in the surface treatment before polishing, the entire aluminum strip can be finely polished, so that after the defects on the surface of the aluminum strip are polished, the surface of the aluminum strip as a whole is always in a state of uniform contact with the chemical medium. Thereby greatly improving the weakening effect of the color difference of the aluminum strip during the chemical polishing process. At the same time, the stirring directions of the first stirring mechanism and the second stirring mechanism are opposite. After completing one polishing, the aluminum plate can be bent in the opposite direction, so that the original inner arc surface and the original outer arc surface are swapped, so that when the second polishing is performed, the corresponding surfaces are flushed with polishing liquid in different directions, which not only improves the surface defect removal effect of the polishing particles on the aluminum plate, but also can improve the chemical treatment effect of the chemical medium in the polishing liquid on the aluminum plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0018] Figure 3It is a side view structural schematic diagram of the present invention.

[0019] Figure 4 for Figure 3 Schematic diagram of the AA section structure.

[0020] Figure 5 for Figure 2 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] Figure 6 It is a schematic diagram of the installation structure of two aluminum plates in the polished state of the present invention.

[0022] Figure 7 It is a schematic diagram of the sealing plate structure of the present invention.

[0023] Among them, 1-operating box, 2-polishing chamber, 3-first stirring mechanism, 4-second stirring mechanism, 5-aluminum plate positioning mechanism, 6-aluminum plate, 7-ventilation chamber, 8-ventilation channel, 9-air blow pipe, 10-baffle wall, 11-sub-air chamber, 12-arc frame, 13-aluminum plate positioning channel, 14-rotating roller, 15-positioning column, 16-slider, 17-locking bolt, 18-sealing plate, 19-inlay groove, 20-first operating chamber, 21-second operating chamber. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Please refer to Figures 1 to 7 As shown, a polishing device for aluminum plate with reduced color difference comprises: The working box 1 is constructed with a cylindrical polishing chamber 2 with an open top surface, the polishing chamber 2 is filled with a chemical polishing liquid with polishing particles, and the working box 1 is constructed with a first stirring mechanism 3 and a second stirring mechanism 4, the stirring parts of the first stirring mechanism 3 and the second stirring mechanism 4 are both arranged in the polishing chamber 2, and the stirring directions of the first stirring mechanism 3 and the second stirring mechanism 4 are coaxial and arranged in opposite directions; An aluminum plate positioning mechanism 5 is constructed on the top surface of the work box 1. The aluminum plate positioning mechanism 5 is constructed with an arc-shaped clamping mechanism coaxially arranged with the polishing chamber 2. The arc-shaped clamping mechanism is used to position and clamp the aluminum plate 6, and the aluminum plate 6 is formed into an arc-shaped mechanism coaxial with the polishing chamber 2. The first stirring mechanism 3 is used to stir the polishing liquid on the inner curved surface side of the aluminum plate 6; The second stirring mechanism 4 is used to stir the polishing liquid on the outer curved surface side of the aluminum plate 6 .

[0031] Further, a method for polishing an aluminum plate 6 with reduced color difference is provided, wherein the aforementioned device for polishing an aluminum plate 6 with reduced color difference is used for polishing. During polishing, the aluminum plate 6 is positioned and installed on the aluminum plate positioning mechanism 5, and the filter plate is placed in a bent state. A first working chamber 20 located on the inner arc side of the aluminum plate 6 and a second working chamber 21 located on the outer arc side of the aluminum plate 6 are formed in the polishing chamber 2. A first stirring device is used to stir the chemical polishing liquid with polishing particles in the first working chamber 20, and a second stirring device is used to stir the chemical polishing liquid with polishing particles in the second working chamber 21. The polishing liquids in the first working chamber 20 and the second working chamber 21 are stirred and rotated in opposite directions, and the two sides of the aluminum plate 6 are polished for the first time. After the first polishing is completed, the aluminum plate 6 is reversely bent and clamped in the aluminum plate positioning mechanism 5 again, so that the inner arc surface and the outer arc surface in the first polishing are aligned, and the second polishing is performed.

[0032] In this way, by utilizing the plasticity of the aluminum plate 6 strip, the aluminum plate 6 strip is curled and deformed under the action of the aluminum plate positioning mechanism 5, so that after the bottom end of the aluminum plate 6 strip abuts against the bottom surface of the polishing chamber 2, the first working chamber 20 and the second working chamber 21 filled with polishing liquid can be formed on the inner arc surface and the outer arc surface side of the aluminum plate 6 strip, respectively. In this way, the polishing liquid in the first working chamber 20 and the second working chamber 21 are stirred respectively by the first stirring mechanism 3 and the second stirring mechanism 4. In this way, the flow direction of the polishing liquid can always be in a state parallel to the curved surface of the aluminum plate 6 strip. Not only can the chemical medium in the polishing liquid always be in uniform and controllable contact with the surface of the aluminum plate 6 strip, but also, precisely because the flow direction of the polishing liquid is parallel to the surface of the aluminum plate 6 strip, the polishing particles in the polishing liquid can also finely polish the surface of the aluminum plate 6 strip, even if there are local minor defects in the surface treatment before polishing, the entire aluminum plate 6 strip can be finely polished, so that after the defects on the surface of the aluminum plate 6 strip are polished, the surface of the aluminum plate 6 strip as a whole is always in a state of uniform contact with the chemical medium. Thus, the effect of weakening the color difference of the aluminum plate 6 is greatly improved during the chemical polishing process. At the same time, the stirring directions of the first stirring mechanism 3 and the second stirring mechanism 4 are opposite, so that after completing one polishing, the aluminum plate 6 can be reversely bent, and the original inner arc surface and the original outer arc surface are swapped, so that during the second polishing, the corresponding surface is flushed with the polishing liquid in different directions, which not only improves the surface defect removal effect of the polishing particles on the aluminum plate 6, but also improves the chemical treatment effect of the chemical medium in the polishing liquid on the aluminum plate 6.

[0033] Furthermore, the first stirring mechanism 3 includes a stirring paddle rotatably arranged on the bottom surface of the polishing chamber 2, the stirring paddle is transmission-connected to an external driving motor, the rotation axis of the stirring paddle is coaxially arranged with the polishing chamber 2, and the polishing liquid in the first working chamber 20 is stirred by the stirring paddle.

[0034] At the same time, the second stirring mechanism 4 includes a ventilation cavity 7 constructed in the working box 1, and the side wall of the polishing cavity 2 is constructed with a plurality of ventilation channels 8. The axis of the ventilation channel 8 is horizontal and is eccentric to the axis of the polishing cavity 2. A plurality of ventilation channels 8 are equidistantly arranged around the axis of the polishing cavity 2. A one-way valve is installed at the air outlet end of each ventilation channel 8, and the side wall of the working box 1 is constructed with an air blow pipe 9 connected to the ventilation cavity 7.

[0035] In this way, the second stirring mechanism 4 uses the high-speed airflow bulging from the side wall of the polishing chamber 2 to stir the polishing liquid in the second working chamber 21, so that even if the polishing liquid is in the annular cavity, it can ensure that it flows parallel to the outer arc surface of the aluminum plate 6, thereby ensuring the chemical polishing effect.

[0036] Furthermore, a plurality of baffle walls 10 are provided in the ventilation cavity 7, and the baffle walls 10 divide the ventilation cavity 7 into a plurality of sub-cavities 11, each of the sub-cavities 11 is connected to the same number of ventilation channels 8, and each of the sub-cavities 11 is connected to one of the air inflation pipes 9 respectively.

[0037] In this way, by utilizing the setting of the sub-air cavity 11, not only can the stirring state of the second stirring mechanism 4 be adjusted by different air blowing volumes, but it can also effectively avoid the situation where a unified air supply causes a small amount of air outflow from the ventilation channel 8 at the far end of the air blowing pipe 9, thereby affecting the uniform flow of the polishing liquid around the outer wall of the aluminum plate 6 in the second working chamber 21.

[0038] More specifically, for the aluminum plate positioning mechanism 5, two aluminum plates 6 are bent into arcs to form a cylindrical first working chamber 20 and an annular second working chamber 21. Specifically, the aluminum plate positioning mechanism 5 is constructed with a pair of arc frames 12 coaxially arranged with the polishing chamber 2, and the two arc frames 12 are spliced ​​to form a circular structure. The arc frames 12 are provided with an aluminum plate positioning channel 13 running through the axis thereof, and the aluminum plate positioning channel 13 is coaxially arranged with the polishing chamber 2, and an aluminum plate 6 clamping mechanism is provided in the aluminum plate positioning channel 13.

[0039] Furthermore, the aluminum plate 6 clamping mechanism includes rotating rollers 14 disposed on the inner wall of the aluminum plate positioning channel 13 , the rotating rollers 14 are disposed opposite to each other, the aluminum plate 6 is clamped between the two rotating rollers 14 , and the roller surfaces of the rotating rollers 14 are structured with anti-slip rubber strips.

[0040] In this way, after the aluminum plate 6 is bent, it is loaded along the bending direction of the aluminum plate positioning channel 13, and the aluminum plate 6 is positioned and clamped in the aluminum plate positioning channel 13 by means of the clamping of the rotating roller 14. The setting of the two arc-shaped frames 12 can not only facilitate the loading of the aluminum plate 6, but also shape the bending deformation of the aluminum plate 6, so that the two aluminum plates 6 can be spliced ​​together to form the first working chamber 20 and the second working chamber 21.

[0041] Furthermore, in order to facilitate the adjustment of the upper and lower positions of the arc frame 12, a positioning column 15 is installed on the top surface of the work box 1, and a slider 16 is slidably installed on the positioning column 15. A locking bolt 17 is constructed between the slider 16 and the positioning column 15 for locking the slider 16. The end of the arc frame 12 is fixedly connected to the side wall of the slider 16.

[0042] Furthermore, since there is a gap between the side ends of the two aluminum plates 6 during the process of splicing the two aluminum plates 6 to form the first working chamber 20 and the second working chamber 21, and the existing gap will cause the first working chamber 20 to be connected with the second working chamber 21, if the first working chamber 20 is connected with the second working chamber 21, the reverse stirring effects of the first stirring mechanism 3 and the second stirring mechanism 4 will affect each other, causing a large amount of turbulence in the polishing liquid, which is not conducive to the regular flow of the polishing liquid that always maintains a horizontal and parallel state with the surface of the aluminum plate 6. Therefore, a sealing plate 18 is arranged between the side ends of the two aluminum plates 6 clamped by the arc frame 12, and the two ends of the sealing plate 18 are respectively constructed with vertically penetrating inlay grooves 19, and the side ends of the aluminum plates 6 are inlaid in the inlay grooves 19, and the bottom ends of the sealing plate 18 and the bottom ends of the aluminum plates 6 are both in contact with the bottom surface of the polishing chamber 2, and the inner arc surfaces of the two aluminum plates 6 and the sealing plate 18 form a first working chamber 20, and the outer arc surfaces of the two aluminum plates 6 and the sealing plate 18 and the inner wall of the polishing chamber 2 form a second working chamber 21, and the first stirring mechanism 3 acts on the first working chamber 20, and the second stirring mechanism 4 acts on the second working chamber 21.

[0043] In this way, by using the setting of the blocking plate 18, and combining the bottom ends of the two aluminum plates 6 and the blocking plate 18 to abut against the bottom surface of the polishing chamber 2, a first working chamber 20 and a second working chamber 21 that are disconnected from each other are formed, thereby preventing the first working chamber 20 from being connected to the second working chamber 21 and affecting the overall polishing effect.

[0044] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A polishing device for aluminum strips capable of reducing color difference, characterized in that: include: An operation box (1) is constructed with a cylindrical polishing chamber (2) with an open top surface, the polishing chamber (2) is filled with a chemical polishing liquid containing polishing particles, a first stirring mechanism (3) and a second stirring mechanism (4) are constructed in the operation box (1), the stirring parts of the first stirring mechanism (3) and the second stirring mechanism (4) are both arranged in the polishing chamber (2), and the stirring directions of the first stirring mechanism (3) and the second stirring mechanism (4) are coaxial and arranged in opposite directions; an aluminum plate positioning mechanism (5) constructed on the top surface of the work box (1), the aluminum plate positioning mechanism (5) being constructed with an arc-shaped clamping mechanism coaxially arranged with the polishing chamber (2), the arc-shaped clamping mechanism being used to position and clamp the aluminum plate (6), and shaping the aluminum plate (6) into an arc-shaped mechanism coaxial with the polishing chamber (2); The first stirring mechanism (3) is used to stir the polishing liquid on the inner curved surface side of the aluminum plate (6); The second stirring mechanism (4) is used to stir the polishing liquid on the outer curved surface side of the aluminum plate (6).

2. The aluminum plate polishing device capable of reducing color difference according to claim 1 is characterized in that: The first stirring mechanism (3) comprises a stirring paddle rotatably arranged on the bottom surface of the polishing chamber (2), the stirring paddle being transmission-connected to an external driving motor, and the rotation axis of the stirring paddle being coaxially arranged with the polishing chamber (2).

3. The aluminum plate polishing device capable of reducing color difference according to claim 1, characterized in that: The second stirring mechanism (4) comprises a ventilation cavity (7) constructed in the working box (1), and the side wall of the polishing cavity (2) is constructed with a plurality of ventilation channels (8), the axis of the ventilation channel (8) is horizontal and is arranged off-axis with the axis of the polishing cavity (2), and a plurality of ventilation channels (8) are arranged equidistantly around the axis of the polishing cavity (2), and a one-way valve is installed at the outlet end of each ventilation channel (8), and the side wall of the working box (1) is constructed with an air blowing pipe (9) connected to the ventilation cavity (7).

4. The aluminum plate polishing device capable of reducing color difference according to claim 3 is characterized in that: A plurality of baffle walls (10) are provided in the ventilation cavity (7), the baffle walls (10) dividing the ventilation cavity (7) into a plurality of sub-cavities (11), each of the sub-cavities (11) being connected to the same number of ventilation channels (8), and each of the sub-cavities (11) being connected to one of the air inflation pipes (9).

5. The aluminum plate polishing device capable of reducing color difference according to claim 1, characterized in that: The aluminum plate (6) positioning mechanism (5) is constructed with a pair of arc frames (12) coaxially arranged with the polishing chamber (2) as the arc clamping mechanism, the two arc frames (12) are spliced ​​to form a circular structure, the arc frame (12) is provided with an aluminum plate positioning channel (13) passing through along its axis, the aluminum plate positioning channel (13) is coaxially arranged with the polishing chamber (2), and the aluminum plate clamping mechanism is provided in the aluminum plate positioning channel (13).

6. The aluminum plate polishing device capable of reducing color difference according to claim 5 is characterized in that: The aluminum plate clamping mechanism comprises rotating rollers (14) arranged on the inner wall of the aluminum plate positioning channel (13), the rotating rollers (14) are arranged opposite to each other in pairs, the aluminum plate (6) is clamped between the two rotating rollers (14), and the roller surfaces of the rotating rollers (14) are structured with anti-slip rubber strips.

7. The aluminum plate polishing device capable of reducing color difference according to claim 5 or 6, characterized in that: A positioning column (15) is installed on the top surface of the work box (1), a slider (16) is slidably installed on the positioning column (15), a locking bolt (17) is constructed between the slider (16) and the positioning column (15) for locking the slider (16), and the end of the arc frame (12) is fixedly connected to the side wall of the slider (16).

8. The aluminum plate polishing device capable of reducing color difference according to claim 5, characterized in that: A blocking plate (18) is arranged between the side ends of the two aluminum plates (6) clamped by the arc-shaped frame (12); both ends of the blocking plate (18) are respectively constructed with vertically penetrating embedding grooves (19); the side ends of the aluminum plates (6) are embedded in the embedding grooves (19); the bottom ends of the blocking plate (18) and the bottom ends of the aluminum plates (6) are both in contact with the bottom surface of the polishing chamber (2); the inner arc surfaces of the two aluminum plates (6) and the blocking plate (18) form a first working chamber (20); the outer arc surfaces of the two aluminum plates (6) and the blocking plate (18) and the inner wall of the polishing chamber (2) form a second working chamber (21); the first stirring mechanism (3) acts on the first working chamber (20); and the second stirring mechanism (4) acts on the second working chamber (21).

9. A method for polishing an aluminum plate (6) with reduced color difference, characterized in that: Polishing is performed using the aluminum plate with a polishing device capable of weakening color difference as described in any one of claims 1 to 8. During polishing, the aluminum plate (6) is positioned and installed on the aluminum plate (6) positioning mechanism (5), and the filter plate is placed in a bent state. A first working chamber (20) located on the inner arc side of the aluminum plate (6) and a second working chamber (21) located on the outer arc side of the aluminum plate (6) are formed in the polishing chamber (2). A first stirring device is used to stir the chemical polishing liquid with polishing particles in the first working chamber (20), and a second stirring device is used to stir the chemical polishing liquid with polishing particles in the second working chamber (21). The polishing liquids in the first working chamber (20) and the second working chamber (21) are stirred and rotated in opposite directions, and the two sides of the aluminum plate (6) are polished for the first time. After the first polishing is completed, the aluminum plate (6) is bent in the reverse direction and clamped in the aluminum plate (6) positioning mechanism (5) again, so that the inner arc surface and the outer arc surface in the first polishing are aligned, and the second polishing is performed.

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