Aluminum profile grinding equipment

Abstract

The invention provides aluminum profile polishing equipment, and relates to the technical field of mechanical equipment, the aluminum profile polishing equipment comprises a sanding assembly, the sanding assembly is provided with an abrasive belt mounting base, the upper end of the abrasive belt mounting base is connected with an abrasive belt driving motor, and the abrasive belt driving motor is connected with a driving main wheel; an abrasive belt pressing part and a vibration grinding part are arranged on the two sides of the middle of the forked frame body correspondingly, the abrasive belt pressing part is used for pressing the abrasive belt downwards in the process of driving the abrasive belt to grind, and the attaching force of the driving abrasive belt and a grinding tool is increased. The polishing device has the beneficial effects that the abrasive belt pressing and polishing component and the vibration polishing component are integrated, large-area efficient polishing can be achieved, complex areas such as grooves and welding seams can be precisely processed through the vibration abrasive disc, multiple times of turnover of workpieces are avoided, the first tensioning rod body and the second tensioning rod body are arranged for dual-rod cooperative tensioning, and the polishing efficiency is improved. Rapid and large-range tensioning adjustment is realized; and trace elongation caused by abrasion can be automatically compensated, the tension is kept constant, and the polishing precision and efficiency are powerfully guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical equipment, and particularly relates to an aluminum profile polishing equipment. BACKGROUND

[0002] In the whole processing system of aluminum profiles, the surface polishing process plays a crucial role, which is the core of determining the final visual aesthetics and use quality of aluminum profile products. Whether an aluminum profile product can stand out in the market and leave a good first impression on consumers largely depends on the quality of its surface polishing. High-quality surface polishing not only enables the aluminum profile to present a smooth and bright appearance, enhancing its decorative and aesthetic properties, but also improves the physical properties of the profile, enhances its corrosion resistance and wear resistance, thereby prolonging the service life of the product and improving its use value.

[0003] Nowadays, with the continuous progress of industrial technology, the industry generally uses a belt sander to perform multi-process integrated processing on the profile in the surface polishing of aluminum profiles. This processing method has high integration and systematization. From the rough grinding stage, the belt sander undertakes important tasks such as rust removal, deburring, and cleaning of welding scars. In the production process of aluminum profiles, surface rust, burrs, and welding scars are inevitable. These defects not only affect the appearance, but also may adversely affect subsequent processing and use. The belt sander can quickly and effectively remove these defects through high-speed rotating sand belts, making the profile surface smooth and clean.

[0004] At the fine grinding stage, the belt sander further performs fine operations such as polishing, wire drawing, and joint line trimming on the profile. Polishing can make the profile surface achieve a mirror-like gloss, enhancing its visual effect; wire drawing can give the profile a unique texture, increasing the artistic value of the product; and joint line trimming can eliminate the traces left by the profile in the mold forming process, making the product more perfect. This mechanized operation method has many significant advantages. It not only greatly improves the processing efficiency, enabling more aluminum profiles to be processed in a unit of time, but also improves the standardization level of the process, ensuring that each product meets consistent quality standards. At the same time, mechanized operation significantly reduces the labor intensity of workers, freeing them from heavy and dangerous manual polishing work, and improves the production environment, reducing the harm of dust, noise, and other factors to workers' health. With the passage of time, this mechanized operation method gradually replaces the traditional manual polishing mode that relies on manpower and becomes the mainstream way of surface polishing of aluminum profiles.

[0005] However, although the existing belt polishing technology has made certain achievements in improving production efficiency and quality, it still faces two serious challenges.

[0006] Firstly, the functional limitation problem is prominent. Currently, the mainstream abrasive belt polishing equipment on the market is mainly designed for the flat outer surface of the profile. In actual production, the structure of aluminum profile is often very complex, in addition to the flat outer surface, there are also a large number of grooves, gaps and other complex geometric structures. These complex structures often have various stains such as oil stains, dust, metal debris, etc., and may also have deep scratches and pits. Due to the design limitations of existing equipment, the treatment effect of stains, scratches and pits in these complex structures is often unsatisfactory. This can easily lead to uneven surface quality of aluminum profile, with good polishing effect in some areas and still having defects in some areas. This unevenness of surface quality can have a serious impact on subsequent anodizing, spraying and other processes, which may lead to inconsistent oxide film thickness, insufficient adhesion of coating, etc., thereby reducing the overall quality and performance of the product.

[0007] Secondly, the technical precision is insufficient, especially the key component of the abrasive belt tensioning system has obvious defects. The tensioning state of the abrasive belt is crucial to the performance of the polishing machine, which directly affects the polishing efficiency, product quality and equipment operation safety. If the tension of the abrasive belt is insufficient, the abrasive belt will slip, vibrate and run off during operation. Slippage will cause the abrasive belt to be unable to effectively polish the profile, reducing the polishing efficiency; vibration will cause uneven marks on the polishing surface, affecting the quality of the finished product; running off may cause the abrasive belt to collide with the equipment, causing safety accidents. If the tension of the abrasive belt is too large, it will sharply accelerate the wear of the abrasive belt, and its service life can be shortened by more than 40%, while also increasing the energy consumption of the equipment and production cost. Therefore, a system that can provide stable and accurately adjustable tension is the basis for ensuring the high-performance operation of the polishing machine.

[0008] Taking the "aluminum profile door and window frame polishing device" disclosed in Chinese patent CN109719599B as an example, the tensioning mechanism of the device adjusts the tension by changing the contact position of the swing lever with the inclined surface and the rotating lever. Although this design has the basic function of tension adjustment, it has obvious limitations. First of all, its adjustment range is narrow, and it can only adapt to sand belts of the same specification within a deviation of 5% in circumference. In actual production, due to different production needs and process requirements, different specifications of sand belts may be needed. When changing to different specifications of sand belts, the tensioning mechanism is difficult to achieve effective tension control, affecting the polishing effect. Secondly, the rigid contact between the inclined surface and the rotating lever is prone to wear after long-term use. As the wear increases, the tension accuracy will gradually decrease, and gaps will occur during transmission, causing fluctuations in the polishing surface quality. Finally, the upper and lower inclined surface adjustment methods of the tensioning mechanism correspond to only two fixed gears, and cannot achieve continuous stepless adjustment of the tension. During the use of the sand belt, due to wear and other reasons, the tension of the sand belt will gradually change. The tensioning mechanism cannot adjust in real time according to the gradual change of the tension, so its application is greatly limited in high-precision and high-stability polishing scenarios. SUMMARY

[0009] The present application overcomes the shortcomings of the prior art and provides an aluminum profile polishing device. The sand belt down pressure polishing part and the vibration polishing part are integrated, which can realize large area efficient polishing and precise processing of complex areas such as grooves and welds through vibration sand disc, avoid multiple turnover of workpieces, and set first and second tensioning rod bodies for double rod cooperative tensioning. The second tensioning rod adopts lever amplification principle to stably output the cylinder thrust force, realizes fast and wide range tensioning adjustment; the bearing roller of the first tensioning rod continuously presses the sand belt, which can automatically compensate the slight elongation caused by wear and keep the tension constant. The double rod structure is compact, occupies small space, responds quickly, accurately controls the tension displacement, and effectively guarantees the polishing precision and efficiency.

[0010] To solve the above technical problems, the present application is realized by the following technical scheme:

[0011] An aluminum profile polishing device comprises a sanding assembly, the sanding assembly is provided with a sand belt installation base, the sand belt installation base is connected with a sand belt driving motor at the upper end, and the sand belt driving motor is connected with a driving main wheel;

[0012] The sand belt installation base is provided with a bifurcated frame body at the lower end, and passive rollers are rotatably connected to both ends of the bifurcated frame body;

[0013] The driving main wheel and the two passive rollers are used to jointly support and drive the sand belt;

[0014] The two sides of the middle part of the forked frame are respectively provided with a sanding belt pressing component and a vibratory grinding component. The sanding belt pressing component is used to press the sanding belt downward during the sanding process to increase the adhesion between the sanding belt and the grinding tool.

[0015] The sanding belt mounting base is provided with a first tensioning rod and a second tensioning rod in the middle, and the first tensioning rod and the second tensioning rod extend to both sides of the sanding belt mounting base respectively;

[0016] The lower end of the second tensioning rod is rotatably connected to the bifurcated frame, and the upper end of the sanding belt mounting base is rotatably connected to a tensioning telescopic drive cylinder. The other end of the tensioning telescopic drive cylinder is rotatably connected to the second tensioning rod.

[0017] The first and second tensioning rods abut against the sanding belt from the inside. When the telescopic rod of the tensioning telescopic drive cylinder retracts, the sanding belt is in a relaxed state, at which point the sanding belt can be replaced. When the telescopic rod of the tensioning telescopic drive cylinder extends, the sanding belt is in a tensioned state, at which point the sanding belt drive motor can drive the sanding belt to work.

[0018] Furthermore, the vibratory grinding component includes a vibratory lifting cylinder, which is connected to a pneumatic vibrator, and the pneumatic vibrator is connected to a vibratory sanding disc.

[0019] A sanding belt pressure seat is provided in the middle of the forked frame. The sanding belt pressing component includes a pressing cylinder. The pressing cylinder is installed on the side of the sanding belt pressure seat. A protruding block is provided above the sanding belt pressure seat. The protruding block is threadedly connected to a pressing adjustment screw. The lower end of the pressing adjustment screw abuts against the upper end of the pressing cylinder.

[0020] The pressure cylinder is connected to the pressure plate, and a pressure protrusion is provided at the middle of the lower end of the pressure plate.

[0021] Furthermore, the sanding belt mounting base is provided with side guards on both sides, one of which has a side guard groove, and the first tensioning rod is fitted into the side guard groove.

[0022] Furthermore, a first tensioning roller shaft is vertically provided at the end of the first tensioning rod, and the first tensioning roller shaft is connected to a first bearing roller;

[0023] The end of the second tensioning rod is vertically provided with a second tensioning roller shaft, which is connected to a second bearing roller.

[0024] Furthermore, the forked frame and the sanding belt mounting base are integrally formed or fixedly connected by fasteners;

[0025] The outer surface of the drive wheel has recessed diagonal grooves extending from one end to the other to form anti-slip grooves, and both ends of the drive wheel are provided with wheel guards.

[0026] Furthermore, the passive roller includes a roller frame, and an open elongated hole is provided at the end of the roller frame. The open elongated hole is connected to the roller shaft, and the roller shaft is rotatably connected to the roller.

[0027] One end of the roller shaft is connected to the bifurcated frame via a fisheye swivel at the end of the shaft. When the other end of the roller shaft is adjusted in the open elongated hole, the roller shaft can tilt along the direction of the open elongated hole, thereby driving the roller to deflect and thus correcting the deviation of the sand belt.

[0028] Furthermore, a frame threaded seat is provided on one side of the roller frame, and the frame threaded seat is rotatably connected to the roller tension adjusting screw. An adjusting handle is provided at one end of the roller tension adjusting screw.

[0029] The roller tension adjusting screw is perpendicularly connected to the roller shaft, and the roller shaft is provided with a threaded hole, which is threadedly connected to the roller tension adjusting screw.

[0030] Furthermore, the sanding assembly is connected to the moving mechanism, which includes a frame base, an X-axis driving component on the frame base, the X-axis driving component is connected to the moving frame, and the X-axis driving component drives the moving frame to move along the X-axis.

[0031] A movable gantry frame is provided on the bottom frame of the frame. The movable gantry frame includes a gantry cross column and gantry side columns connected to both ends of the gantry cross column.

[0032] The gantry crossbar is connected to the Y-axis drive component, the Y-axis drive component is connected to the Z-axis drive component, and the Z-axis drive component is connected to the sanding assembly.

[0033] Furthermore, the Y-direction drive component includes a parallel Y-direction slide rail and a Y-direction rack; the Y-direction slide rail is slidably connected to a Y-direction moving slide plate, and the Y-direction moving slide plate is connected to a second motor.

[0034] Furthermore, the second motor is connected to a Y-axis gear, which meshes with a Y-axis rack.

[0035] Furthermore, the Z-axis drive component includes a third motor connected to the Y-axis moving slide plate and a Z-axis slider; the Z-axis slider is slidably connected to a Z-axis slide rail, and a Z-axis rack is arranged parallel to one side of the Z-axis slide rail.

[0036] Both the Z-axis slide rail and the Z-axis rack are connected to the sanding belt mounting base.

[0037] Furthermore, the third motor is connected to a Z-axis gear, which meshes with a Z-axis rack.

[0038] Furthermore, the X-axis drive component includes a first motor, which is connected to an X-axis lead screw, and the X-axis lead screw is threadedly connected to a lead screw slider.

[0039] The X-axis lead screw has a first slide rail arranged parallel to both sides, and the first slide rail is slidably connected to a first slider.

[0040] Furthermore, the movable frame is connected to the first slider and the lead screw slider.

[0041] Furthermore, the bottom frame of the frame is provided with a slide rail platform, which is used to install the first slide rail;

[0042] The lower end of the frame base is connected to the feet.

[0043] Furthermore, the mobile frame is provided with an installation plate, and the installation plate is provided with a number of positioning threaded holes.

[0044] Furthermore, the gantry crossbeam and gantry side pillars have a hollow structure inside, with pipeline channels for power lines and signal lines laid inside.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] 1. The belt grinding component and the vibratory grinding component are integrated into one unit, achieving dual functionality in one machine. It can perform large-area, high-efficiency conventional surface grinding and polishing using the belt, and can also use the vibratory grinding disc to specifically handle complex contours such as grooves, pits, welds, and areas that are difficult for the belt to reach. This design avoids the need for workpieces to be transferred between different devices, improving processing continuity and overall efficiency.

[0047] 2. A dual-rod tensioning system with a first tensioning rod and a second tensioning rod is used. The second tensioning rod adopts a lever-type transmission structure, which amplifies the thrust of the tensioning telescopic drive cylinder, ensuring stable tension output. Simultaneously, the second tensioning rod achieves seamless movement through a rotating connection, enabling rapid switching between a wide range of sanding belt tension and relaxation with quick response. The first bearing roller of the first tensioning rod continuously presses against the sanding belt, providing auxiliary tension force and automatically compensating for minor elongation caused by sanding belt wear, maintaining minimal tension fluctuations and ensuring consistent grinding accuracy. The dual-rod tensioning structure is compact, occupying little vertical space, and is suitable for workstations with limited installation height. The stroke of the tensioning telescopic drive cylinder is directly converted into the swing amplitude of the rod, ensuring precise tension displacement control. Attached Figure Description

[0048] The accompanying drawings are provided to further illustrate the invention and, together with the embodiments thereof, are used to explain the invention. They do not constitute a limitation thereof. In the drawings:

[0049] Figure 1 This is a schematic diagram of the overall structure of the grinding equipment according to an embodiment of the present invention;

[0050] Figure 2 This is an exploded structural diagram of the grinding equipment according to an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the moving gantry structure of the grinding equipment according to an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of the back structure of the sanding component of the sanding device according to an embodiment of the present invention;

[0053] Figure 5 This is a schematic diagram of the structure of the sanding belt pressing component and the vibratory grinding component of the grinding equipment according to an embodiment of the present invention.

[0054] Figure 6 This is a diagram of the belt drive motor of the grinding equipment according to an embodiment of the present invention;

[0055] Figure 7 This is a schematic diagram of the front structure of the sanding component of the sanding equipment according to an embodiment of the present invention;

[0056] Figure 8 This is a schematic diagram of the sanding belt mounting base of the grinding equipment according to an embodiment of the present invention;

[0057] Figure 9 This is an exploded view of the sanding belt mounting base, the first tensioning rod, and the second tensioning rod according to an embodiment of the present invention.

[0058] In the diagram: A1, base frame; A10, footing; A11, slide rail platform; A2, X-axis drive component; A21, first motor; A22, X-axis lead screw; A221, lead screw slider; A23, first slide rail; A231, first slider; A3, movable frame; A4, mounting plate; A41, positioning threaded hole; A5, movable gantry frame; A51, gantry side column; A52, gantry cross column; A 53. Y-axis slide rail; A54. Y-axis rack; A55. Y-axis moving slide plate; A56. Second motor; A57. Third motor; A58. Z-axis slider; A581. Z-axis slide rail; A59. Z-axis rack; 1. Sanding belt mounting base; 101. Forked frame; 102. Side guard strip; 1021. Side guard groove; 103. Extension seat; 104. Sanding belt pressure seat; 2. Sanding belt drive motor; 2 01. Drive main wheel; 2011. Wheel body flange; 2012. Wheel body anti-slip texture; 3. First tensioning rod; 301. First tensioning roller shaft; 302. First roller with bearing; 4. Second tensioning rod; 401. Second tensioning roller shaft; 402. Second roller with bearing; 5. Tensioning telescopic drive cylinder; 6. Passive roller; 601. Roller frame; 6011. Frame threaded seat; 602. Roller... 6021 Roller shaft; 603 Roller tension adjusting screw; 6031 Adjusting handle; 604 Spherical pivot at the end of shaft; 7 Sanding belt; 8 Sanding belt pressing component; 801 Pressing adjusting screw; 802 Pressing cylinder; 803 Pressing plate; 8031 ​​Pressing protrusion; 9 Vibratory grinding component; 901 Vibratory lifting cylinder; 902 Pneumatic vibrator; 9021 Vibratory sanding disc. Detailed Implementation

[0059] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the invention.

[0060] like Figures 1 to 9 As shown, an aluminum profile grinding device includes a sanding belt mounting base 1, which is integrally formed from high-strength cast aluminum. The upper end of the sanding belt mounting base 1 is connected to a sanding belt drive motor 2, which is connected to a drive main wheel 201. The drive main wheel 201 acts as an active transmission component to drive the sanding belt 7 to form a closed-loop operation.

[0061] To enhance transmission stability and anti-slip performance, the outer surface of the drive main wheel 201 is provided with recessed diagonal grooves extending from one end to the other, forming wheel anti-slip grooves 2012. This recessed diagonal groove design can effectively increase the friction between the sanding belt and the wheel body and prevent slippage. Both ends of the drive main wheel 201 are provided with wheel body retaining edges 2011 to limit the lateral displacement of the sanding belt during operation and initially prevent it from running off-center.

[0062] The passive roller 6 includes a roller frame 601, with an open elongated hole at one end. The open elongated hole connects to a roller shaft 6021, which is rotatably connected to the roller 602. One end of the roller shaft 6021 is connected to the forked frame 101 via a swivel joint 604, allowing it to swing freely in a specific direction. When the other end of the roller shaft 6021 is positioned within the open elongated hole, the roller shaft 6021 can tilt along the direction of the open elongated hole, thereby causing the roller 602 to deflect, thus correcting the deviation of the sanding belt 7.

[0063] A threaded seat 6011 is provided on one side of the roller frame 601, which is rotatably connected to the roller tension adjusting screw 603. One end of the adjusting screw 603 has an adjusting handle 6031 for easy manual operation. The roller tension adjusting screw 603 is arranged perpendicularly to the roller shaft 6021 and is connected to a threaded hole on the roller shaft 6021 via a threaded connection. When the roller tension adjusting screw 603 is rotated via the adjusting handle 6031, it drives the roller shaft 6021 to produce a slight displacement along its length within the open elongated hole. Since one end of the roller shaft 6021 is hinged with a fisheye pivot, this displacement forces the shaft to tilt controllably under the guidance of the open elongated hole, thereby causing the roller 602 to deflect at a corresponding angle. This deflection can change the running trajectory of the sanding belt 7 at the driven wheel in real time, achieving automatic compensation and correction of belt deviation.

[0064] The drive wheel has anti-slip grooves on its surface, which effectively increases friction and prevents the sanding belt from slipping. The wheel flanges at both ends limit the initial lateral displacement of the sanding belt and reduce the risk of serious belt deviation.

[0065] The passive roller, by rotating the adjustment handle, controls the roller tension adjustment screw to make a slight displacement of the roller shaft within the open elongated hole. Utilizing the hinged characteristics of the spherical rotor at the shaft end and the guiding effect of the elongated hole, this displacement is converted into a controllable angular deflection of the passive roller. This mechanical feedback adjustment can correct the sanding belt's trajectory in real time, with direct, linear, and precise correction actions.

[0066] The automatic alignment mechanism transforms the complex alignment function into an intuitive manual rotation operation. Operators can quickly complete alignment adjustments on-site without special tools or complex calculations, simply by rotating the adjusting screw with a handle. This adjustment method significantly reduces the operational threshold and adjustment time, improving the ease of use and maintenance efficiency of the equipment.

[0067] While adjusting the alignment, the tension of the abrasive belt can also be fine-tuned. This integrated design makes the overall structure more compact, saves space, and reduces the complexity and manufacturing cost of the system.

[0068] A forked frame 101 is provided at the lower end of the sanding belt mounting base 1. The forked frame 101 and the sanding belt mounting base 1 are integrally formed or fixedly connected by fasteners. Both ends of the forked frame 101 are rotatably connected to passive rollers 6. The passive rollers 6 rotate synchronously with the sanding belt 7, assisting in supporting the sanding belt 7 and adjusting the tension arc of the sanding belt 7. The drive main wheel 201 cooperates with the passive rollers to form an isosceles triangle support layout, so that the sanding belt 7 is evenly stressed and effectively prevents the sanding belt 7 from running off-center.

[0069] The bifurcated frame 101 has a belt pressing component 8 and a vibratory grinding component 9 respectively installed on both sides of the middle section. The belt pressing component 8 is used to press the belt 7 downward during the grinding process to enhance the contact between the belt 7 and the workpiece surface and ensure uniform and stable grinding effect. The vibratory grinding component 9 is used to handle complex surface structures such as grooves and depressions that are difficult for the belt to reach, and achieves fine grinding through high-frequency vibration.

[0070] The vibratory grinding component 9 includes a vibratory lifting cylinder 901, which is connected to a pneumatic vibrator 902. The pneumatic vibrator 902 is connected to a vibratory sanding disc 9021. The vibratory lifting cylinder 901 can vertically lift and lower the vibratory sanding disc 9021. When the vibratory sanding disc 9021 is not in use, the vibratory lifting cylinder 901 raises it to prevent the vibratory sanding disc 9021 from causing wear on the tool. When the vibratory sanding disc 9021 is in use, the vibratory lifting cylinder 901 lowers it to drive the vibratory sanding disc 9021 to work.

[0071] A sanding belt pressure seat 104 is provided in the middle of the forked frame 101. The sanding belt pressing component 8 includes a pressing cylinder 802, which is installed on the side of the sanding belt pressure seat 104. A protruding block is provided on the top of the sanding belt pressure seat 104. The protruding block is threadedly connected to a pressing adjustment screw 801. The lower end of the pressing adjustment screw 801 abuts against the upper end of the pressing cylinder 802. The pressing pressure can be controlled by rotating the pressing adjustment screw 801.

[0072] The lowering cylinder 802 is connected to the lowering plate 803. A lowering protrusion 8031 ​​is provided at the middle of the lower end of the lowering plate 803 for direct contact and pressing of the sanding belt 7.

[0073] A first tensioning rod 3 and a second tensioning rod 4 are provided in the middle of the sanding belt mounting base 1. The first tensioning rod 3 and the second tensioning rod 4 extend to both sides of the sanding belt mounting base 1, respectively. The lower end of the second tensioning rod 4 is rotatably connected to the bifurcated frame 101. An extension seat 103 extends integrally from the upper end of the sanding belt mounting base 1, serving as the mounting carrier for the tension telescopic drive cylinder 5. The extension seat 103 is rotatably connected to one end of the tension telescopic drive cylinder 5, and the other end of the tension telescopic drive cylinder 5 is rotatably connected to the second tensioning rod 4. The second tensioning rod 4 rotates around the hinge point with the bifurcated frame 101 under the drive of the tension telescopic drive cylinder 5, realizing a wide range of tensioning and slack switching of the sanding belt 7. A lever-type transmission structure is adopted here, which can release the thrust of the tension telescopic drive cylinder 5, making the tension force output stable. This rotating connection method makes the second tensioning rod 4 move without jamming, and the operation is smoother.

[0074] The drive main wheel 201 and two passive rollers 6 are used to jointly support and drive the sanding belt 7. The first tensioning rod 3 and the second tensioning rod 4 abut against the sanding belt 7 from the inside. When the telescopic rod of the tension telescopic drive cylinder 5 retracts, the sanding belt 7 can be quickly put into a relaxed state. The sanding belt 7 can be replaced without disassembling the parts.

[0075] When the telescopic rod of the tensioning telescopic drive cylinder 5 extends, the sanding belt 7 is in a tensioned state, and at this time the sanding belt drive motor 2 can drive the sanding belt 7 to work.

[0076] Side guards 102 are provided on both sides of the sanding belt mounting base 1. The side guards 102 can prevent sanding debris and dust from entering the base and avoid damaging the moving parts. One side guard 102 is provided with a side guard groove 1021. The first tensioning rod 3 is fitted into the side guard groove 1021. The side guard groove 1021 provides a stable lateral limit for the first tensioning rod 3 and restricts its horizontal sway.

[0077] The end of the first tensioning rod 3 is vertically provided with a first tensioning roller shaft 301. The first tensioning roller shaft 301 is connected to a first bearing roller 302. The first tensioning roller shaft 301 provides rotational support for the roller. The first bearing roller 302 directly abuts against the inner side of the sanding belt 7, transmits auxiliary tension force and rotates synchronously with the sanding belt 7.

[0078] The end of the second tensioning rod 4 is vertically provided with a second tensioning roller shaft 401, which is connected to a second bearing roller 402. As the active tensioning execution end, the second bearing roller 402 pushes the sand belt under the drive of the cylinder to achieve a wide range of tensioning and relaxation switching. The second bearing roller 402 has low rotational resistance, ensuring smooth tensioning without jamming.

[0079] A dual-rod tensioning system, consisting of a first tensioning rod 3 and a second tensioning rod 4, is employed. The second tensioning rod 4 utilizes a lever-type transmission structure, amplifying the thrust of the tensioning telescopic drive cylinder 5 and ensuring stable tension output. Simultaneously, the second tensioning rod 4 achieves seamless movement through a rotating connection, enabling rapid switching between a wide range of tension and relaxation on the sanding belt 7 with swift response. The first bearing roller 302 of the first tensioning rod 3 continuously abuts against the sanding belt 7, providing auxiliary tension force and automatically compensating for minor elongation caused by sanding belt wear, maintaining minimal tension fluctuations and ensuring consistent grinding accuracy. The compact dual-rod tensioning structure occupies little vertical space, making it suitable for workstations with limited installation height. The stroke of the tensioning telescopic drive cylinder 5 is directly converted into the rod's swing amplitude, resulting in precise tension displacement control.

[0080] The passive roller 6 includes a roller frame 601, with an open elongated hole at its end. The open elongated hole connects to a roller shaft 6021, and the roller shaft 6021 is rotatably connected to the roller 602. The open elongated hole provides a linear guide trajectory for the roller shaft 6021, limiting its sliding along the hole and preventing roller misalignment during adjustment. The open design facilitates quick installation, removal, and maintenance of the roller shaft 6021, ensuring stable coaxiality of the roller 602 during adjustment and effectively reducing uneven wear between the sanding belt 7 and the roller 602.

[0081] A frame threaded seat 6011 is provided on one side of the roller frame 601. The frame threaded seat 6011 is rotatably connected to the roller tension adjusting screw 603. An adjusting handle 6031 is provided at one end of the roller tension adjusting screw 603.

[0082] The roller tension adjusting screw 603 is perpendicularly connected to the roller shaft 6021. The roller shaft 6021 is provided with a threaded hole, which is threadedly connected to the roller tension adjusting screw 603. The roller shaft 6021 serves as the core of the rotational support for the roller 602 and also achieves fine-tuning of the position of the passive roller 6 through linkage with the roller tension adjusting screw 603 via the threaded hole. Rotating the adjusting handle 6031 clockwise causes the roller tension adjusting screw 603 to rotate forward along the threaded seat 6011 of the frame. The roller shaft 6021 is pushed outward within the elongated opening, increasing the tension in the corresponding area of ​​the sanding belt 7. Turning the adjusting handle 6031 counterclockwise pulls the roller shaft 6021 inward, releasing local tension. The threaded hole of the roller shaft 6021 forms a self-locking thread pair, which can stably maintain the position of the roller 602 after adjustment, without the risk of loosening. The adjusting handle 6031 can be operated without auxiliary tools and can be completed with one hand, adapting to the needs of rapid debugging and temporary tension compensation in the production line.

[0083] The grinding equipment of this invention integrates the belt grinding component and the vibratory grinding component into one unit, achieving dual functionality in one machine. It can perform large-area, high-efficiency conventional surface grinding and polishing using the belt, and can also use the vibratory grinding disc to specifically handle complex contours such as grooves, pits, welds, and areas that are difficult for the belt to reach. This design avoids the need for workpieces to be transferred between different devices, improving processing continuity and overall efficiency.

[0084] The belt pressing component controls the initial pressure of the pressing cylinder by rotating the pressing adjustment screw, thereby fine-tuning the clamping force of the sanding belt on the workpiece. This ensures that the most suitable grinding pressure is provided at different grinding stages or when dealing with materials of different hardness, thus guaranteeing uniform grinding results, improving the stability of product surface quality, and effectively preventing excessive wear or workpiece damage caused by excessive pressure.

[0085] The vibratory grinding component is equipped with a vibratory lifting cylinder. During operation, the cylinder lowers the vibratory grinding disc, bringing it into contact with the workpiece for precision work. When not in operation, the cylinder raises the disc, moving it away from the work area. This prevents the disc from spinning freely and rubbing against the workpiece or sanding belt when not in use, significantly reducing unnecessary tool wear, extending the disc's lifespan, and lowering consumable costs.

[0086] The system includes a base frame A1, on which an X-axis drive component A2 is mounted. The X-axis drive component A2 is connected to a movable frame A3, which drives the movable frame A3 to move along the X-axis. This design not only provides X-axis feed for workpiece processing but also brings convenience in installation: when loading and unloading workpieces, the movable frame A3 can be moved to an open area outside the equipment, eliminating the need for operators to enter the equipment or work at heights, greatly reducing labor intensity, eliminating safety hazards, and improving the accuracy and efficiency of workpiece clamping.

[0087] A movable gantry frame A5 is mounted on the base frame A1. The movable gantry frame A5 includes a gantry crossbeam A52 and gantry side columns A51 connected to both ends of the crossbeam A52, forming a high-rigidity portal frame structure. This structure effectively distributes the load and stress during processing, ensuring the stability and accuracy of the Y-axis and Z-axis moving parts during operation. The gantry crossbeam A52 connects to the Y-axis drive component, which in turn connects to the Z-axis drive component. The Z-axis drive component connects to the grinding assembly. Therefore, the grinding assembly is driven by both the Y-axis and Z-axis drive components, enabling movement in the Y-axis and lifting in the X-axis. The movable frame A3 can move along the X-axis. Thus, through three-axis linkage, the grinding assembly and the workpiece achieve arbitrary relative movement in three-dimensional space, enabling full-coverage, flexible, and precise grinding of processing features at different locations.

[0088] The mobile frame A3 is equipped with a mounting plate A4, which serves as the direct carrier for workpiece clamping. Made of high-strength steel or alloy materials, this plate boasts excellent flatness and rigidity, effectively resisting vibrations and loads generated during processing and providing a stable reference for the workpiece. The mounting plate A4 has several positioning threaded holes A41 machined in a matrix or regular pattern according to the size and shape of typical workpieces. These threaded holes are standardized positioning interfaces, offering high flexibility and compatibility. Users can select appropriate clamping modules, such as positioning pins, pressure plates, and chucks, based on the clamping requirements of different workpieces, and quickly install them to any hole position via threaded connections. This achieves rapid, precise, and flexible workpiece clamping, greatly improving the equipment's adaptability to different batches and specifications of workpieces and enhancing production preparation efficiency.

[0089] The gantry crossbeam A52 and gantry side columns A51 have a hollow internal structure, which not only optimizes the ratio of structural weight to rigidity, but also creates an integrated pipeline channel specifically designed for laying various types of pipelines. This design houses and fixes all power lines driving the Y and Z axes components, such as motor cables, control signal lines, sensor lines, and possible pneumatic pipelines, inside the gantry structure. This isolates the moving cables from the external environment, avoiding contact with moving parts, cutting dust, or accidental collisions, significantly improving reliability and extending pipeline life. The cables move rhythmically with the moving parts within the channel, reducing the swaying and entanglement risks associated with traditional external cable chains or suspended cables, ensuring smooth and precise movement. This fully enclosed cable management system results in a clean, professional appearance, facilitating cleaning and maintenance, and meeting the design standards of modern industrial equipment.

[0090] The Y-axis drive component includes a parallel Y-axis slide rail A53 and a Y-axis rack A52. The Y-axis slide rail A53 is slidably connected to a Y-axis moving slide plate A55, which is connected to a second motor A56. The second motor A56 is connected to a Y-axis gear, which meshes with the Y-axis rack A52. This motor-and-rack transmission method combines high rigidity, large thrust, and fast response, making it particularly suitable for the long stroke and high speed requirements of gantry-type transverse structures. It can effectively drive the subsequent Z-axis components for precise lateral positioning.

[0091] The Z-axis drive component includes a third motor A57 connected to the Y-axis moving slide plate A55 and a Z-axis slider A58. The Z-axis slider A58 is slidably connected to a Z-axis slide rail A581. A Z-axis rack A59 is arranged parallel to one side of the Z-axis slide rail A581. Both the Z-axis slide rail A581 and the Z-axis rack A59 are connected to the sanding belt mounting base 1. The third motor A57 is connected to a Z-axis gear, which meshes with the Z-axis rack A59. Here, the rotational motion of the third motor A57 is converted into the linear lifting motion of the sanding belt mounting base 1. This design provides the sanding assembly with vertical feed force and depth control capability, which is the key to achieving constant pressure sanding and complex contour following.

[0092] The X-axis drive component A2 includes a first motor A21, which is connected to an X-axis lead screw A22. The X-axis lead screw A22 is threadedly connected to a lead screw slider A221. First slide rails A23 are arranged parallel to each other on both sides of the X-axis lead screw A22, and first sliders A213 are slidably connected to the first slide rails A23. The movable frame A3 is connected to the first sliders A213 and the lead screw slider A221. The bottom of the movable frame A3 is firmly connected to both the lead screw slider A221 and the first sliders A213 on both sides. This layout, with a central drive and double-sided support, not only provides excellent load-bearing capacity and motion rigidity, effectively preventing the movable frame A3 from tipping over or creeping during movement, but also ensures the straightness and positioning accuracy of the movable frame A3 over a long stroke range, laying a solid foundation for the precise machining of workpieces.

[0093] The base frame A1 is equipped with a slide rail platform A11, which is used to mount the first slide rail A23. By directly fixing the slide rail A23 to the reinforced slide rail platform A11, the entire X-axis motion system can be ensured to have extremely high rigidity and stability. This design effectively disperses the dynamic stress brought by the moving frame A3 and its load, preventing track wear, operating noise, or accuracy loss caused by foundation deformation, thereby ensuring the positioning accuracy and service life of the equipment under long-term high-load operation.

[0094] The lower end of the frame base A1 is connected to the footplate A10, which is made of cast iron or heavy steel structure and equipped with high-strength leveling anchor bolts. By adjusting the anchor bolts, the unevenness of the installation ground can be precisely compensated, so that the entire massive equipment frame is level. The wide support area of ​​the bottom surface of the footplate A10 and its internal shock-absorbing design can effectively absorb and isolate the vibration generated during equipment operation, preventing the vibration from being transmitted to the ground or affecting the processing accuracy. It also improves the stability and quietness of equipment operation. The footplate A10 safely transfers the huge weight of the equipment and the processing load to the foundation, enhancing the overturning stability of the whole machine and providing an important guarantee for the safe operation of the equipment.

[0095] The moving mechanism, by designing the moving frame A3 to move fully along the X-axis, externalizes the workpiece loading and unloading position. Operators can complete clamping in an open and convenient area without entering the equipment or working at heights. This not only significantly reduces labor intensity and eliminates safety hazards associated with working at heights and in confined spaces, but also provides excellent conditions for visual positioning and fixture adjustment, thereby improving clamping accuracy and operational efficiency, achieving a synergistic improvement in both safety and production efficiency.

[0096] The A5 mobile gantry forms a closed gantry structure, providing high-rigidity support for the Y and Z axis moving parts. It can effectively distribute the complex forces during the grinding process and ensure long-term stable motion accuracy. The gantry beam and column are designed with a hollow structure to serve as internal pipeline channels, housing all power and signal cables internally. This avoids mechanical interference, dust pollution, and accidental damage between cables and the outside. It also eliminates the risk of shaking and tangling of external cables, ensuring smooth movement. The overall appearance of the machine is clean, easy to clean and maintain, and meets modern industrial equipment standards, significantly improving the overall reliability and service life of the system.

[0097] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the 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. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An apparatus for polishing an aluminum profile, characterized in that, Including sand mill assembly, sand mill assembly is provided with sand belt installation base (1), sand belt installation base (1) upper end is connected sand belt drive motor (2), sand belt drive motor (2) is connected drive main wheel (201); The sand belt installation base (1) lower end is provided with bifurcated frame body (101), both ends of bifurcated frame body (101) are rotatably connected with passive roller (6); The drive main wheel (201) and two passive rollers (6) are used to support and drive the sand belt (7) together; The bifurcated frame body (101) is provided with sand belt pressing component (8) and vibration polishing component (9) on both sides of the middle part, the sand belt pressing component (8) is used to press the sand belt (7) downward during driving sand belt (7) polishing, and the adhesion between the driving sand belt (7) and the polishing tool is increased; The sand belt installation base (1) is provided with first tensioning rod body (3) and second tensioning rod body (4) in the middle part, and the first tensioning rod body (3) and the second tensioning rod body (4) extend to both sides of the sand belt installation base (1) respectively; The lower end of the second tensioning rod body (4) is rotatably connected with the bifurcated frame body (101), and the upper end of the sand belt installation base (1) is rotatably connected with a tensioning telescopic drive cylinder (5), and the other end of the tensioning telescopic drive cylinder (5) is rotatably connected with the second tensioning rod body (4); The first tensioning rod body (3) and the second tensioning rod body (4) abut against the sand belt (7) from the inner side of the sand belt (7) respectively, when the telescopic rod of the tensioning telescopic drive cylinder (5) is retracted, the sand belt (7) is in a relaxed state, at this time, the sand belt can be replaced, when the telescopic rod of the tensioning telescopic drive cylinder (5) is extended, the sand belt (7) is in a tensioned state, at this time, the sand belt (7) can be driven by the sand belt drive motor (2) to work.

2. The apparatus according to claim 1, wherein The vibration polishing component (9) comprises a vibration lifting cylinder (901), the vibration lifting cylinder (901) is connected with a pneumatic shock absorber (902), and the pneumatic shock absorber (902) is connected with a vibrating sand disc (9021); The bifurcated frame body (101) is provided with a sand belt pressing seat (104) in the middle part, the sand belt pressing component (8) comprises a pressing cylinder (802), the pressing cylinder (802) is installed on the side of the sand belt pressing seat (104), a protruding block is arranged above the sand belt pressing seat (104), the protruding block is threadedly connected with a pressing adjusting screw (801), and the lower end of the pressing adjusting screw (801) abuts against the upper end of the pressing cylinder (802); The pressing cylinder (802) is connected with a pressing plate (803), and a pressing protruding block (8031) is arranged at the middle part of the lower end of the pressing plate (803).

3. The apparatus according to claim 1, wherein Both sides of the sand belt installation base (1) are provided with side protection strips (102), one side of the side protection strips (102) is provided with a side protection slot (1021), and the first tensioning rod body (3) is embedded in the side protection slot (1021).

4. The apparatus of claim 3, wherein the abrasive belt is mounted on a plurality of rollers. The end of the first tensioning rod body (3) is vertically provided with a first tensioning roller shaft (301), and the first tensioning roller shaft (301) is connected with a first belt bearing roller (302). The end of the second tensioning rod body (4) is vertically provided with a second tensioning roller shaft (401), and the second tensioning roller shaft (401) is connected with a second belt bearing roller (402).

5. The apparatus according to any one of claims 1 to 4, wherein The bifurcated frame body (101) and the abrasive belt mounting base (1) are in an integral molding structure or are fixedly connected through fasteners. The outer surface of the driving main wheel (201) is provided with recessed diagonal lines extending from one end to the other end, forming a wheel body anti-skid line (2012), and both ends of the driving main wheel (201) are provided with a wheel body stop edge (2011).

6. An apparatus for polishing an aluminum extrusion as defined in claim 5 wherein, The passive roller (6) comprises a roller frame body (601), and the end of the roller frame body (601) is provided with an open long hole connected with a roller rotating shaft (6021), and the roller rotating shaft (6021) is rotationally connected with a roller (602). One end of the roller rotating shaft (6021) is connected with the bifurcated frame body (101) through a rotating shaft end fisheye rotating seat (604), and when the other end of the roller rotating shaft (6021) is adjusted in position in the open long hole, the roller rotating shaft (6021) can be inclined in the direction of the open long hole, thereby driving the roller (602) to deflect, so as to realize the deviation correction of the abrasive belt (7).

7. An apparatus for polishing an aluminum extrusion as defined in claim 6 wherein, One side of the roller frame body (601) is provided with a frame body threaded seat (6011) rotationally connected with a roller tensioning adjusting screw rod (603), and one end of the roller tensioning adjusting screw rod (603) is provided with an adjusting handle (6031). The roller tensioning adjusting screw rod (603) is connected with the roller rotating shaft (6021) perpendicularly, the roller rotating shaft (6021) is provided with a rotating shaft threaded hole, and the rotating shaft threaded hole is threadedly connected with the roller tensioning adjusting screw rod (603).

8. The apparatus according to any one of claims 1 to 4, 6 to 7, characterized in that, The sanding assembly is connected with a moving mechanism, the moving mechanism comprises a frame body bottom frame (A1), the frame body bottom frame (A1) is provided with an X-direction driving component (A2), the X-direction driving component (A2) is connected with a moving frame body (A3), and the X-direction driving component (A2) drives the moving frame body (A3) to move along the X direction. The frame body bottom frame (A1) is provided with a moving gantry (A5), and the moving gantry (A5) comprises a gantry cross column (A52) and gantry side columns (A51) connected to both ends of the gantry cross column (A52). The gantry cross column (A52) is connected with a Y-direction driving component, and the Y-direction driving component is connected with a Z-direction driving component. The Y-direction driving component comprises Y-direction sliding rails (A53) and a Y-direction rack (A52) arranged in parallel, the Y-direction sliding rails (A53) are slidingly connected with a Y-direction moving sliding plate (A55), and the Y-direction moving sliding plate (A55) is connected with a second motor (A56). The second motor (A56) is connected with a Y-direction gear, and the Y-direction gear is in meshing connection with the Y-direction rack (A52).

9. An apparatus for polishing an aluminum extrusion as defined in claim 8 wherein, The Z-direction driving component comprises a third motor (A57) connected with the Y-direction moving sliding plate (A55) and a Z-direction sliding block (A58), and the Z-direction sliding block (A58) is slidingly connected with a Z-direction sliding rail (A581), and one side of the Z-direction sliding rail (A581) is provided with a Z-direction rack (A59) in parallel. The Z-direction sliding rail (A581) and the Z-direction rack (A59) are connected with the abrasive belt mounting base (1); The third motor (A57) is connected with a Z-direction gear, and the Z-direction gear is connected with the Z-direction rack (A59) in a meshing manner.

10. The apparatus of claim 9, wherein the abrasive belt is a flexible abrasive belt. The X-direction driving component (A2) comprises a first motor (A21), the first motor (A21) is connected with an X-direction screw rod (A22), and the X-direction screw rod (A22) is threadedly connected with a screw rod sliding block (A221); Two sides of the X-direction screw rod (A22) are provided with the first sliding rail (A23) in parallel, and the first sliding rail (A23) is slidably connected with a first sliding block (A213); The moving frame body (A3) is connected with the first sliding block (A213) and the screw rod sliding block (A221) The frame bottom frame (A1) is provided with a sliding rail platform (A11) for mounting the first sliding rail (A23); The frame bottom frame (A1) is connected with a foot stand (A10) at a lower end; The moving frame body (A3) is provided with a mounting plate (A4), and the mounting plate (A4) is provided with a plurality of positioning threaded holes (A41); The gantry cross column (A52) and the gantry side column (A51) are internally hollow structures, and pipeline channels for power lines and signal lines are arranged in the hollow structures.

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