A clamping fixture and clamping method for processing and grinding aluminum profiles

Abstract

This invention belongs to the field of aluminum profile processing technology, and relates to a clamping fixture and clamping method for grinding aluminum profiles. It includes a grinding base, on which a limiting component is provided. The limiting component includes a sleeve mounted on the grinding base. A sleeve rod is movably connected inside the sleeve via a first spring. The side end of the sleeve is connected to the external environment via a first pipe. A negative pressure box is installed inside the grinding base, and the negative pressure box is connected to the inner cavity of the sleeve via a second pipe. An auxiliary component and a clamping component are also provided on the grinding base. In this clamping fixture and clamping method for grinding aluminum profiles, the sleeve rod in the limiting component moves downward within the sleeve under the pressure of the aluminum profile. The aluminum profile presses the sleeve rod and a first pressure plate downwards synchronously. The negative pressure box extracts air from the inner cavity of the sleeve through the second pipe, creating a negative pressure inside the sleeve. Multiple sets of limiting components greatly improve the overall structural stability and adaptability.

Description

Technical Field

[0001] This invention relates to the technical field of aluminum profile processing, specifically to a clamping fixture and clamping method for aluminum profile processing and grinding. Background Technology

[0002] Aluminum profiles are made from aluminum alloy materials through extrusion molding and have a specific cross-sectional shape. In the processing of aluminum profiles, the grinding equipment is a crucial piece of equipment. However, traditional manual or simple grinding tools are difficult to guarantee stability, resulting in poor overall grinding effect.

[0003] To overcome the above-mentioned defects, existing technology 1 (Chinese Patent Publication No. CN222627290U, Publication Date: March 18, 2025) discloses a clamping fixture and its polishing equipment for aluminum profile processing. The clamping fixture includes a fixture support, a clamping assembly, and a telescopic push rod. Rectangular through holes are provided at the front of the two side arms of the fixture support. The telescopic push rod is installed on the rear side of the fixture support, with its front end sliding through the middle of the fixture support and connected to a push-pull guide rod. The clamping assembly includes a pair of symmetrically arranged jaws, with clamping plates symmetrically arranged at the heads of the two jaws. The tails of the two jaws slide through two rectangular through holes. Linear sliders are slidably fitted on the outer sides of both ends of the push-pull guide rod. The middle of the two jaws and the two side arms of the fixture support are respectively connected to the two linear sliders via inner and outer connecting rods. The clamping fixture is installed at the rear end of the storage rack of the polishing equipment via an adjusting connecting frame. Compared with existing aluminum profile surface polishing equipment, this utility model saves the number of electric push rods used and improves the synchronization of the clamping fixture's movements and the stability of its installation. Prior art 2 (Chinese patent with publication number CN117400125A and publication date of January 16, 2024) discloses an intelligent clamping fixture for aluminum profile processing, relating to the technical field of aluminum profile processing equipment. It includes a processing box, a grinding box, and a processing platform. The processing platform has two symmetrically arranged limiting side plates on both sides of the grinding box. A first fixing frame is arranged between the limiting side plates on one side of the grinding box. A positioning plate is connected to the first fixing frame via several telescopic columns. A cylinder is arranged on the first fixing frame, and a fixing pressure plate is arranged on the driving end of the cylinder. A second fixing frame is arranged between the limiting side plates on the opposite side of the first fixing frame. A fixing plate is arranged on the second fixing frame. A rubber layer is arranged on the bottom of both the fixing plate and the fixing pressure plate, and several infrared sensors are evenly spaced within the rubber layer. This invention, through the cooperative use of the first and second fixing frames and other components, can conveniently clamp aluminum profiles and grind the clamped parts, improving the convenience of clamping and grinding.

[0004] While existing technologies improve stability by setting up multiple clamping structures, the fixed frames cannot be adjusted according to changes in the shape and size of the aluminum profile, resulting in insufficient overall structural stability and adaptability. This makes the aluminum profile prone to positional displacement during grinding, leading to poor grinding results. Furthermore, when the clamping plate is pushed by the cylinder to clamp and limit the side surface of the aluminum profile, the overall clamping stability is poor, and positional displacement is prone to occur during grinding, thus affecting grinding accuracy.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing clamping fixtures and clamping methods for aluminum profile processing and grinding. Therefore, we propose a clamping fixture and clamping method for aluminum profile processing and grinding that can effectively solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a clamping fixture and clamping method for processing and grinding aluminum profiles, in order to solve the problems mentioned in the background art. Currently, the market uses multiple clamping structures to improve stability, but the fixed frame cannot be adjusted according to the shape and size changes of the aluminum profile, resulting in insufficient overall structural stability and adaptability. This makes the aluminum profile prone to positional displacement during grinding, leading to poor grinding effect. Furthermore, when the clamping plate is pushed by the cylinder to clamp and limit the side surface of the aluminum profile, the overall clamping stability is poor, and positional displacement is prone to occur during grinding, thus affecting the grinding accuracy.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A clamping fixture for grinding and polishing aluminum profiles includes a grinding base with a limiting component. The limiting component includes a sleeve mounted on the grinding base, a sleeve rod movably connected to the inside of the sleeve via a first spring, a side end of the sleeve connected to the external environment via a first pipe, an adsorption groove for limiting the aluminum profile at the top of the sleeve rod, a rubber gasket inside the adsorption groove, a negative pressure box installed inside the grinding base, the negative pressure box being hollow, and a second pipe connected to the inner cavity of the sleeve, an auxiliary component on the grinding base including a first pressure plate mounted on the grinding base, a conveying component installed below the first pressure plate, the conveying component including a conveying cylinder installed inside the grinding base, the conveying cylinder connected to the negative pressure box via a fourth pipe, a through hole at the side end of the sleeve rod, the through hole being located inside the sleeve after the sleeve rod is pressed down, and a clamping component on the grinding base.

[0009] Preferably, a support member is connected to the first pressure plate via a lifting plate. The support member is disposed inside the grinding seat. A lifting seat is connected to the lifting plate. An inclined groove is provided on the lifting seat. A movable member is movably connected inside the inclined groove.

[0010] Preferably, a piston is installed on the side end of the moving part, the piston is connected through the inside of the conveying cylinder, a second spring for rebound is provided on the outside of the piston, the conveying cylinder is connected to the external environment through a third pipe, a first control valve is installed on the third pipe, and a second control valve is installed on the fourth pipe.

[0011] Preferably, the clamping assembly includes a movable seat disposed on the grinding seat, the movable seat having a movable structure at its side end, and the movable structure including a telescopic cylinder, a slider and a slide seat, the bottom of the movable seat having a slider, the grinding seat having a telescopic cylinder and a slide seat mounted on it, the output end of the telescopic cylinder being connected to the side end of the movable seat, and the slider being slidably connected to the upper end of the slide seat.

[0012] Preferably, the movable base is provided with a motor, and the output end of the motor is connected to a movable plate through a drive structure. The drive structure includes a gear connected to the output end, and gear plates are meshed on both sides of the gear. The movable plates are symmetrically arranged, and the movable plates are respectively connected to the gear plates.

[0013] Preferably, a clamping seat is installed on the side of the movable plate, and a limiting component is provided inside the clamping seat. The limiting component includes a sleeve. The side end of the sleeve inside the clamping seat is connected to the inner cavity of the clamping seat through a first pipe. The inner cavity of the sleeve is connected to the inner cavity of the negative pressure box through a second pipe. An air pump is installed inside the grinding seat, and the air pump is connected to the inner cavity of the clamping seat through a fifth pipe.

[0014] Preferably, a sixth pipe is installed on the fifth pipe, a grinding assembly is installed on the grinding base, the grinding assembly includes a drive cylinder installed on the grinding base, a support frame is installed on the drive cylinder, a support seat is connected to the support frame via an electric guide rail, and a grinding component is installed under the support seat.

[0015] Preferably, a second pressure plate is connected to the support frame via a buffer, a docking box is installed on the support frame, a pipe groove adapted to the top of the sixth pipe is opened under the docking box, the docking box is connected to the inner cavity of the second pressure plate via a seventh pipe, and a through groove is opened at the bottom of the second pressure plate.

[0016] A clamping method for a clamping fixture used for processing and grinding aluminum profiles includes the following steps:

[0017] S1: Basic adsorption fixation: Place the aluminum profile to be polished on the adsorption groove at the top of the sleeve rod of the polishing base. The negative pressure is transmitted to the adsorption groove through the sleeve rod and the through hole, and the aluminum profile is fixed by adsorption with the rubber gasket.

[0018] S2: Corner clamping and fixing: Push the moving seat to move to the appropriate position on the grinding seat, start the drive structure to drive the symmetrically arranged moving plates to move closer to each other, so that the clamping seat on the side of the moving plate fits the corner of the aluminum profile, and the limiting component in the clamping seat stabilizes and limits the corner of the aluminum profile.

[0019] S3: Surface limiting clamping: The docking box connects to the sixth pipe through the pipe groove. The air pump draws air to generate negative pressure in the inner cavity of the second pressure plate. The bottom groove of the second pressure plate fits against the surface of the aluminum profile to achieve stable limiting and prevent grinding vibration.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This clamping fixture and clamping method for aluminum profile processing and grinding involves a sleeve rod in the limiting assembly moving downwards within the sleeve under the pressure of the aluminum profile. The aluminum profile simultaneously presses the sleeve rod and the first pressure plate downwards. A negative pressure box extracts air from the inner cavity of the sleeve through a second pipe, creating a negative pressure inside the sleeve. Multiple sets of limiting assemblies are used, greatly improving the overall structural stability and adaptability. The specific details are as follows:

[0022] 1. The negative pressure box draws air through the second pipe to create negative pressure in the sleeve. The negative pressure is transmitted to the adsorption tank through the through hole, which firmly adsorbs the aluminum profile. The fixing method does not require manual pressing. It is completed automatically by relying on gravity and negative pressure, avoiding subsequent grinding deviations due to inaccurate initial positioning.

[0023] 2. With the synergistic effect of the moving structure and clamping components, the corners of aluminum profiles can be precisely clamped. The motor controls the symmetrical moving plates to move closer or separate through the drive structure, so that the clamping seat can accurately align with the corners of the aluminum profile. The overall clamping position can be flexibly adjusted according to the size of the aluminum profile to ensure clamping accuracy.

[0024] 3. The device achieves precise adjustment of the height and horizontal position of the grinding part through the drive cylinder and electric guide rail structure. The multi-dimensional adjustment method can flexibly adjust the position of the grinding part according to the grinding needs of aluminum profiles, effectively avoiding grinding misalignment caused by the position deviation of the grinding part.

[0025] 4. The docking box is precisely connected to the sixth pipe through the pipe groove. The air pump draws in gas to create negative pressure in the inner cavity of the second pressure plate. The through groove at the bottom of the second pressure plate forms a stable limit on the surface of the aluminum profile. The buffer on the second pressure plate allows it to make smooth contact with the surface of the aluminum profile, avoiding hard contact that could damage the profile. This improves the overall grinding accuracy and final product quality, and reduces the scrap rate caused by vibration.

[0026] 5. The set sleeve rod downward movement triggers the negative pressure system to achieve initial fixation. When the moving seat and motor work together to adjust the clamping position, the air pump can enhance the clamping stability through the connected inner cavity of the sleeve. Overall, it reduces the operation interval and connection error between each link, making the overall operation process of the device smoother and improving processing efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall side view structure of the present invention;

[0029] Figure 3 This is a top view of the grinding base structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the grinding base of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection structure between the sleeve and the rod of the present invention;

[0032] Figure 6 This is a schematic diagram of the internal structure of the negative pressure box of the present invention;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the sleeve of the present invention;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the conveyor cylinder of the present invention;

[0035] Figure 9 This is a schematic diagram of the connection structure between the movable plate and the clamping seat of the present invention;

[0036] Figure 10 This is a schematic diagram of the internal structure of the clamping seat of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of the support frame after it has been moved according to the present invention;

[0038] Figure 12 This is a schematic diagram of the connection structure between the buffer component and the second pressure plate of the present invention;

[0039] Figure 13 This is a schematic diagram of the upper structure of the grinding base of the present invention;

[0040] Figure 14 This is a schematic diagram of the internal structure of the clamping seat of the present invention.

[0041] In the diagram: 1. Grinding seat; 2. Sleeve; 3. Sleeve rod; 4. First spring; 5. First pipe; 6. Through hole; 7. Adsorption groove; 8. Rubber gasket; 9. Second pipe; 10. Negative pressure box; 11. First pressure plate; 12. Lifting plate; 13. Support component; 14. Lifting seat; 15. Inclined groove; 16. Moving component; 17. Piston; 18. Conveying cylinder; 19. Second spring; 20. Third pipe; 21. Fourth pipe; 22. Moving seat; 23. Motor; 24. Drive structure; 25. Moving plate; 26. Clamping seat; 27. Air pump; 28. Fifth pipe; 29. ​​Sixth pipe; 30. Drive cylinder; 31. Support frame; 32. Support seat; 33. Grinding component; 34. Docking box; 35. Seventh pipe; 36. Buffer component; 37. Second pressure plate; 38. Telescopic cylinder; 39. Slider; 40. Slide seat. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1: In this example, multiple sets of limiting components are provided, which facilitates adjustment according to changes in the shape and size of the aluminum profile. This greatly improves the overall structural stability and adaptability, enhancing the versatility of the equipment. Figures 1-8The technical solution shown includes a grinding base 1, on which a limiting component is provided. The limiting component includes a sleeve 2 installed on the grinding base 1. A sleeve rod 3 is movably connected inside the sleeve 2 via a first spring 4. The side end of the sleeve 2 is connected to the external environment via a first pipe 5. An adsorption groove 7 for limiting the aluminum profile is opened at the top of the sleeve rod 3. A rubber gasket 8 is provided inside the adsorption groove 7. A negative pressure box 10 is installed inside the grinding base 1. The negative pressure box 10 is hollow and is connected to the inner cavity of the sleeve 2 via a second pipe 9. An auxiliary component is provided on the grinding base 1. The auxiliary component includes a first pressure plate 11 installed on the grinding base 1. A conveying component is installed below the first pressure plate 11. The conveying component includes a conveying cylinder 1 installed inside the grinding base 1. 8. The conveying cylinder 18 is connected to the negative pressure box 10 through the fourth pipe 21. The sleeve rod 3 has a through hole 6 on its side. After the sleeve rod 3 is pressed down, the through hole 6 is located inside the sleeve 2. The grinding seat 1 is equipped with a clamping assembly. The first pressure plate 11 is connected to a support member 13 through a lifting plate 12. The support member 13 is located inside the grinding seat 1. The lifting plate 12 is connected to a lifting seat 14. The lifting seat 14 has an inclined groove 15. A moving member 16 is movably connected inside the inclined groove 15. A piston 17 is installed on the side of the moving member 16. The piston 17 is connected through the inside of the conveying cylinder 18. A second spring 19 for rebound is provided on the outside of the piston 17. The conveying cylinder 18 is connected to the external environment through the third pipe 20. A first control valve is installed on the third pipe 20. The fourth pipe 21 is connected to the external environment through the third pipe 20. A second control valve is installed on the grinding base 1. The aluminum profile to be ground is placed on the grinding base 1. The aluminum profile is placed on the adsorption groove 7 at the top of the sleeve rod 3. The sleeve rod 3 in the limiting assembly moves downward under the pressure of the aluminum profile and moves downward inside the sleeve 2. At this time, the sleeve rod 3 squeezes the first spring 4 inside the sleeve 2. The gas inside the sleeve 2 is discharged to the external environment through the first pipe 5. Since the initial height of the sleeve rod 3 is higher than the height of the first pressure plate 11, the aluminum profile only contacts the first pressure plate 11 after the sleeve rod 3 moves downward under the gravity of the aluminum profile. At this time, the aluminum profile presses the sleeve rod 3 and the first pressure plate 11 down synchronously. The lifting plate 12 at the bottom of the first pressure plate 11 moves down with the cooperation of the support member 13. The downward movement of the lifting plate 12 causes the lifting seat 14 to move down synchronously. The inclined groove 1 on the lifting seat 14 5 moves accordingly, causing the movable part 16, which is movably connected inside the inclined groove 15, to slide along the inclined groove 15. This, in turn, drives the piston 17 connected to the movable part 16 to move inside the conveying cylinder 18. Since the conveying cylinder 18 is connected to the negative pressure box 10 through the fourth pipe 21, the negative pressure box 10 extracts the air from the inner cavity of the sleeve 2 through the second pipe 9, creating a negative pressure inside the sleeve 2. At this time, because the sleeve rod 3 is pressed down under the gravity of the aluminum profile, the through hole 6 is located inside the sleeve 2. The negative pressure inside the sleeve 2 is transmitted to the adsorption tank 7 through the through hole 6, thereby firmly adsorbing the aluminum profile onto the adsorption tank 7. Furthermore, the rubber gasket 8 inside the adsorption tank 7 makes the adsorption more stable, reducing the problem of poor adsorption stability caused by the insufficient smoothness of the aluminum profile surface, thus completing the fixation of the aluminum profile.Multiple limit components are set, making it easy to adjust according to changes in the shape and size of the aluminum profile. This greatly improves the overall structural stability and adaptability, enhancing the equipment's versatility. During the installation of the conveyor cylinder 18, the first control valve installed on the third pipe 20 is open, and the second control valve installed on the fourth pipe 21 is closed. This ensures that the gas inside the conveyor cylinder 18 remains stable during installation with the lifting seat 14. The fourth pipe 21 is then connected to the negative pressure box 10. When the conveyor cylinder 18 needs to be used, the first control valve installed on the third pipe 20 remains closed, and the second control valve installed on the fourth pipe 21 is open. When the piston 17 moves, a negative pressure is formed inside the conveyor cylinder 18. Air from the negative pressure box 10 is drawn into the conveyor cylinder 18 through the fourth pipe 21, thus generating negative pressure. The negative pressure box 10 then extracts air from the inner cavity of the sleeve 2 through the second pipe 9, creating a negative pressure inside the sleeve 2. At this time, due to the sleeve rod 3 on the aluminum profile... After being pressed down under gravity, the through hole 6 is located inside the sleeve 2. The negative pressure inside the sleeve 2 is transmitted to the adsorption tank 7 through the through hole 6, thereby firmly adsorbing the aluminum profile onto the adsorption tank 7, thus stabilizing and limiting the aluminum profile. When the piston 17 inside the conveying cylinder 18 is reset by the rebound force of the second spring 19, the gas inside the conveying cylinder 18 flows back to the negative pressure box 10 through the fourth pipe 21. At this time, opening the second control valve installed on the fourth pipe 21 allows external gas to be introduced into the conveying cylinder 18, and also allows the high-pressure gas inside the conveying cylinder 18 to be discharged through the third pipe 20, preparing for the next auxiliary conveying. The fourth pipe 21 is connected to the external gas, which not only allows external gas to be introduced into the conveying cylinder 18, facilitating gas stability and maintenance of the overall negative pressure system, thereby improving the stability of the device, but also allows for the ventilation of the gas drawn into the negative pressure box 10 from the conveying cylinder 18, thereby improving the service life of the structure.

[0044] Example 2: In this example, the limiting components on the clamping base 26 stably limit the corners of the aluminum profile, achieving precise clamping and fixing of the aluminum profile. Specifically, as follows... Figure 3 , Figure 4 , Figure 9 , Figure 10 , Figure 13 and Figure 14As shown, the clamping assembly includes a movable base 22 mounted on a grinding base 1. A movable structure is provided on the side of the movable base 22, and the movable structure includes a telescopic cylinder 38, a slider 39, and a sliding groove seat 40. A slider 39 is provided at the bottom of the movable base 22. The telescopic cylinder 38 and the sliding groove seat 40 are mounted on the grinding base 1. The output end of the telescopic cylinder 38 is connected to the side of the movable base 22. The slider 39 is slidably connected to the upper end of the sliding groove seat 40. A motor 23 is mounted on the movable base 22. The output end of the motor 23 is connected to a movable plate 25 via a drive structure 24. The drive structure 24 includes a gear connected to the output end, and gear plates meshing with each other on both sides of the gear. The movable plates 25 are symmetrically arranged and respectively connected to the gear plates. Clamping devices are mounted on the side of the movable plates 25. The clamping seat 26 has a limiting component inside, which includes a sleeve 2. The side end of the sleeve 2 inside the clamping seat 26 is connected to the inner cavity of the clamping seat 26 through a first pipe 5. The inner cavity of the sleeve 2 is connected to the inner cavity of the negative pressure box 10 through a second pipe 9. An air pump 27 is installed inside the grinding seat 1. The air pump 27 is connected to the inner cavity of the clamping seat 26 through a fifth pipe 28. When it is necessary to adjust the position of the moving seat 22, the telescopic cylinder 38 is first activated. The pushing force of the telescopic cylinder 38 causes the moving seat 22 to slide in a certain direction in the groove of the sliding seat 40 through the slider 39. As the slider 39 moves, it will drive the moving seat 22 to move along the direction of the sliding seat 40 on the grinding seat 1, so that the moving seat 22 is precisely adjusted to the required position. When the movable seat 22 reaches the predetermined position, the telescopic cylinder 38 stops working, the slider 39 is fixed in the slide seat 40, and the movable seat 22 stops in the new position. The motor 23 on the movable seat 22 is started. The output end of the motor 23 drives the movable plate 25 to move through the drive structure 24. The motor 23 drives the gear in the drive structure 24 to rotate. The gear drives the meshing toothed plates on both sides to move. Since the movable plates 25 are symmetrically arranged and respectively connected to the toothed plates, the movement of the toothed plates causes the two movable plates 25 to move closer or further apart. The clamping seat 26 on the side of the movable plate 25 moves synchronously with the movable plate 25 until the clamping seat 26 contacts the edge of the aluminum profile. At this time, the air pump 27 inside the grinding seat 1 is started. The clamping seat 26 is equipped with a sleeve 2. The air pump 27 Air is drawn into the inner cavity of the clamping seat 26 through the fifth pipe 28. Since the inner cavity of the clamping seat 26 is connected to the inner cavity of the sleeve 2, and the inner cavity of the sleeve 2 is connected to the inner cavity of the clamping seat 26 through the fifth pipe 28, the air pump 27 draws air, causing the side end of the sleeve 2 to draw air through the first pipe 5. When the clamping seat 26 clamps the aluminum profile, the inner sleeve rod 3 moves into the inside of the sleeve 2, so that the through hole 6 is located inside the sleeve 2. Therefore, the gas inside the sleeve 2 is connected to the negative pressure box 10 through the second pipe 9, which facilitates the negative pressure box 10 to adsorb the gas. The negative pressure inside the sleeve 2 is transmitted to the adsorption groove 7 through the through hole 6, thereby firmly adsorbing the aluminum profile onto the adsorption groove 7. Therefore, the limiting component on the clamping seat 26 stabilizes and limits the corners of the aluminum profile, achieving precise clamping and fixing of the aluminum profile.

[0045] Example 3: In this example, the through groove at the bottom of the second pressure plate 37 stabilizes and limits the surface of the aluminum profile, making the second pressure plate 37 more stable when used with the grinding part 33, preventing vibration of the aluminum profile during grinding, and ensuring grinding accuracy and quality. Specifically, as shown below... Figure 1 , Figure 2 , Figure 11 and Figure 12 As shown, the following is disclosed: a sixth pipe 29 is installed on the fifth pipe 28; a grinding assembly is installed on the grinding base 1; the grinding assembly includes a drive cylinder 30 installed on the grinding base 1; a support frame 31 is installed on the drive cylinder 30; a support seat 32 is connected to the support frame 31 via an electric guide rail; a grinding component 33 is installed under the support seat 32; a second pressure plate 37 is connected to the support frame 31 via a buffer 36; a docking box 34 is installed on the support frame 31; a pipe groove adapted to the top of the sixth pipe 29 is opened under the docking box 34; the docking box 34 is connected to the inner cavity of the second pressure plate 37 via a seventh pipe 35; a through groove is opened at the bottom of the second pressure plate 37; the drive cylinder 30 pushes the support frame 31 to move up and down as a whole, adjusting the height of the grinding component 33 so that it is at a suitable vertical distance from the aluminum profile to be ground; and the electric guide rail under the support frame 31 drives the support seat 32 to move left and right. The monitor under the support base 32 facilitates monitoring and allows for fine-tuning of the horizontal position of the grinding part 33, ensuring that the grinding part 33 is accurately aligned with the grinding mark line of the aluminum profile. During use, the buffer 36 of the second pressure plate 37 acts as a buffer, facilitating contact between the second pressure plate 37 and the surface of the aluminum profile. After the support frame 31 moves down, the docking box 34 precisely connects with the top of the sixth pipe 29 through the pipe groove. The air pump 27 extracts gas, and the docking box 34 generates negative pressure in the inner cavity of the second pressure plate 37 through the seventh pipe 35. A separate solenoid valve is installed on the seventh pipe 35 for easy individual control, reducing the problem of poor negative pressure effect caused by the connection of the seventh pipe 35. The through groove at the bottom of the second pressure plate 37 stabilizes and limits the surface of the aluminum profile, making the second pressure plate 37 more stable when the grinding part 33 is in use, preventing vibration of the aluminum profile during grinding, and ensuring grinding accuracy and grinding quality.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A clamping tool for machining and polishing of aluminum profiles, comprising a polishing seat (1) arranged, characterized in that: The polishing seat (1) is provided with a limiting assembly, the limiting assembly comprises a sleeve (2) installed on the polishing seat (1), a sleeve rod (3) movably connected with the sleeve (2) through a first spring (4) in the sleeve (2), the sleeve (2) is communicated with the outside environment through a first pipeline (5) at the side end, an adsorption groove (7) for limiting aluminum profile is formed in the top end of the sleeve rod (3), a rubber gasket (8) is arranged in the adsorption groove (7), a negative pressure box (10) is installed in the polishing seat (1), the negative pressure box (10) is hollow, the negative pressure box (10) is communicated with the inner cavity of the sleeve (2) through a second pipeline (9), an auxiliary assembly is arranged on the polishing seat (1), the auxiliary assembly comprises a first pressing plate (11) installed on the polishing seat (1), a conveying assembly is installed below the first pressing plate (11), the conveying assembly comprises a conveying cylinder (18) installed in the polishing seat (1), the conveying cylinder (18) is communicated with the negative pressure box (10) through a fourth pipeline (21), a through hole (6) is formed in the side end of the sleeve rod (3), the through hole (6) is located in the sleeve (2) after the sleeve rod (3) is pressed, and a clamping assembly is arranged on the polishing seat (1). The first pressing plate (11) is connected with a supporting piece (13) through a lifting plate (12), the supporting piece (13) is arranged in the polishing seat (1), the lifting plate (12) is connected with a lifting seat (14), the lifting seat (14) is provided with an inclined groove (15), and the movable piece (16) is movably connected in the inclined groove (15). The movable piece (16) is provided with a piston (17) at the side end, the piston (17) penetrates through the inside of the conveying cylinder (18), the piston (17) is provided with a second spring (19) outside for rebound, the conveying cylinder (18) is communicated with the outside environment through a third pipeline (20), a first control valve is installed on the third pipeline (20), and a second control valve is installed on the fourth pipeline (21).

2. The clamping tool for processing and polishing of aluminum profiles according to claim 1, characterized in that: The clamping assembly comprises a moving seat (22) arranged on the polishing seat (1), a moving structure is arranged at the side end of the moving seat (22), and the moving structure comprises a telescopic air cylinder (38), a sliding block (39) and a sliding groove seat (40), the sliding block (39) is arranged at the bottom of the moving seat (22), the telescopic air cylinder (38) and the sliding groove seat (40) are installed on the polishing seat (1), the output end of the telescopic air cylinder (38) is connected to the side end of the moving seat (22), and the sliding block (39) is slidingly connected to the upper end of the sliding groove seat (40).

3. The clamping tool for processing and polishing of aluminum profiles according to claim 2, characterized in that: A motor (23) is arranged on the moving seat (22), the output end of the motor (23) is connected with a moving plate (25) through a driving structure (24), the driving structure (24) comprises a gear connected to the output end, and toothed plates are meshingly connected on both sides of the gear, the moving plate (25) is symmetrically arranged, and the moving plate (25) is connected to the toothed plates respectively.

4. The clamping tool for processing and polishing of aluminum profiled material according to claim 3, characterized in that: The side end of the moving plate (25) is provided with a clamping seat (26), a limiting assembly is arranged in the clamping seat (26), the limiting assembly comprises a sleeve (2), the side end of the sleeve (2) in the clamping seat (26) is connected with the inner cavity of the clamping seat (26) through a first pipeline (5), the inner cavity of the sleeve (2) is connected with the inner cavity of a negative pressure box (10) through a second pipeline (9), and an air pump (27) is arranged in the polishing seat (1).

5. The clamping tool for processing and polishing of aluminum profiled material according to claim 4, characterized in that: A sixth pipeline (29) is arranged on the fifth pipeline (28), a polishing assembly is arranged on the polishing seat (1), the polishing assembly comprises a driving air cylinder (30) arranged on the polishing seat (1), a supporting frame (31) is arranged on the driving air cylinder (30), a supporting seat (32) is connected with the supporting frame (31) through an electric guide rail, and a polishing piece (33) is arranged on the supporting seat (32).

6. The clamping tool for processing and polishing of aluminum profiles according to claim 5, characterized in that: The supporting frame (31) is connected with a second pressing plate (37) through a buffer (36), a butt joint box (34) is arranged on the supporting frame (31), a pipeline groove matched with the top of the sixth pipeline (29) is arranged in the butt joint box (34), the butt joint box (34) is connected with the inner cavity of the second pressing plate (37) through a seventh pipeline (35), and a through groove is arranged in the bottom of the second pressing plate (37).

7. A clamping method for a clamping tool for machining and polishing of an aluminum profile according to any one of claims 1-6, characterized in that: The specific method steps are as follows: S1: basic adsorption and fixation: the aluminum profile to be polished is placed on the adsorption groove (7) at the top end of the sleeve rod (3) of the polishing seat (1), negative pressure is transmitted to the adsorption groove (7) through the sleeve rod (3) and the through hole (6), and the aluminum profile is adsorbed and fixed in cooperation with the rubber gasket (8); S2: corner clamping and fixing: the moving seat (22) is pushed to move to a suitable position on the polishing seat (1), the driving structure (24) is started to drive the symmetrically arranged moving plates (25) to move close to each other, the clamping seats (26) at the side ends of the moving plates (25) are attached to the corners of the aluminum profile, and the limiting assembly in the clamping seat (26) is used to stably limit the corners of the aluminum profile; S3: surface limiting and clamping: the butt joint box (34) is butt jointed with the sixth pipeline (29) through the pipeline groove, the air pump (27) is used to suck air to generate negative pressure in the inner cavity of the second pressing plate (37), and the through groove in the bottom of the second pressing plate (37) is attached to the surface of the aluminum profile to realize stable limiting and prevent polishing vibration.

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