Aluminum profile sand blasting device

Abstract

The invention relates to the technical field of sand blasting devices, and provides an aluminum profile sand blasting device which comprises a sand blasting system, a feeding mechanism and a discharging mechanism, and the feeding mechanism and the discharging mechanism are arranged on the two sides of the sand blasting system. The sand blasting system comprises a grinding mechanism and a sand blasting mechanism, the grinding mechanism communicates with the sand blasting mechanism through a first pipeline structure, a plurality of sand blasting rings are rotationally assembled in the sand blasting mechanism, a plurality of sand blasting heads are arranged on the sand blasting rings at intervals, and a second pipeline structure used for recovering dust is connected to the sand blasting mechanism; the feeding mechanism and the discharging mechanism are each provided with a positioning assembly, a positioning seat is rotationally installed on each positioning assembly, auxiliary wheels are arranged at the two ends of each positioning seat respectively, and a positioning gap is formed between the auxiliary wheels at the two ends. The problems that dust dissipation is serious and uneven roughness of different parts of the profile is easily caused in the sand blasting process are solved, and the sand blasting device has the advantages of being good in dust protection effect and high in sand blasting uniformity.

Description

Technical Field

[0001] This invention relates to the field of sandblasting equipment technology, and more specifically, to a sandblasting equipment for aluminum profiles. Background Technology

[0002] Aluminum profiles are widely used in building doors and windows, rail transportation, electronic products, aerospace, and high-end equipment manufacturing due to their excellent properties such as light weight, high strength, corrosion resistance, and ease of processing. To meet the diverse requirements of various applications for surface quality, coating adhesion, and aesthetics, aluminum profiles typically require surface pretreatment before deep processing such as spraying, electrophoresis, or anodizing. Sandblasting is a key process in this regard. It utilizes high-speed sandblasting to impact the surface of the aluminum profile, effectively removing oxide scale, oil stains, and microburrs, creating a uniform, rough, and clean surface. This significantly improves the adhesion between subsequent coatings and the substrate. Currently, common aluminum profile sandblasting equipment in industrial production typically requires a large installation space and allows for the processing of long profiles. However, it has significant drawbacks: First, it generates significant dust emissions, creating a harsh working environment that threatens the health of operators and fails to meet increasingly stringent environmental protection requirements. Second, the uniformity and consistency of the sandblasting process highly depend on the experience and skill level of the operators, making standardized operations difficult and easily leading to uneven roughness in different parts of the profile, affecting the quality of subsequent processing. Summary of the Invention

[0003] Therefore, in order to solve the problems of severe dust emission and uneven roughness of different parts of the profile during the sandblasting process, the present invention provides a sandblasting device for aluminum profiles, the specific technical solution of which is as follows: A sandblasting device for aluminum profiles includes a sandblasting system and a feeding mechanism and a discharging mechanism disposed on both sides of the sandblasting mechanism. The sandblasting system includes a grinding mechanism and a sandblasting mechanism. The grinding mechanism is connected to the sandblasting mechanism through a first pipe structure. A plurality of sandblasting rings are rotatably assembled inside the sandblasting mechanism. A plurality of sandblasting heads are spaced apart on the sandblasting rings. A second pipe structure for dust recovery is connected to the sandblasting mechanism. Both the feeding mechanism and the discharging mechanism are provided with positioning components. A positioning seat is rotatably mounted on the positioning component. Auxiliary wheels are respectively provided at both ends of the positioning seat. A positioning gap is formed between the two auxiliary wheels. The aluminum profile is placed and positioned between the positioning gaps on both sides.

[0004] The aforementioned aluminum profile sandblasting device, by incorporating a rotatable sandblasting ring within the sandblasting mechanism, allows multiple sandblasting heads spaced at intervals on the ring to perform 360-degree rotational spraying around a stationary or slowly conveyed aluminum profile. This completely breaks the limitations of traditional fixed or unidirectional moving spray guns, ensuring that the entire outer circumference of the aluminum profile, including complex grooves and edges, is uniformly covered by the sand flow. This effectively eliminates sandblasting dead zones, resulting in a highly consistent surface roughness and providing an excellent base for subsequent coating processes. The device integrates a fully automated system encompassing feeding, sandblasting, unloading, abrasive circulation (through a first pipeline structure), and dust recovery (through a second pipeline structure). The entire process ensures smooth material flow with minimal human intervention, guaranteeing a clean working environment and meeting environmental protection requirements.

[0005] Furthermore, the grinding mechanism includes a first frame and a grinding assembly disposed inside the first frame. A first connecting box is installed on the bottom outer wall of the first frame. One end of the first connecting box is connected to the bottom of the grinding assembly, and the other end of the first connecting box is connected to the first pipe structure.

[0006] Furthermore, the grinding assembly includes an inner frame, a rotating shaft seat, a first grinding disc, and a second grinding disc. The inner frame is disposed inside the first frame, and the rotating shaft seat is rotatably mounted on the inner frame. The first grinding disc and the second grinding disc are sequentially fitted onto the rotating shaft seat. A grinding groove is formed on the top of the first grinding disc. Several grinding rods are fixed on the inner frame. The grinding rods extend into the grinding groove and are adapted to the bottom of the grinding groove. Multiple sand outlet holes are spaced apart on the bottom of the groove. The second grinding disc is connected to the sand outlet holes through multiple first sand supply pipes, and each first sand supply pipe corresponds to one of the sand outlet holes.

[0007] Furthermore, the grinding assembly also includes a sand inlet funnel and a sand outlet funnel. The sand inlet funnel is mounted on the top of the inner frame, and a sand inlet pipe is inclinedly connected to the bottom outlet of the sand inlet funnel. The sand inlet pipe is located above the grinding tank. The sand outlet funnel is mounted on the bottom of the inner frame. The second grinding disc is connected to the sand outlet funnel through a second sand supply pipe. A sand outlet pipe is connected to the bottom outlet of the sand outlet funnel, and the sand outlet pipe is connected to the first connecting box.

[0008] Furthermore, the sandblasting mechanism includes a second frame and a sandblasting cylinder. A dust collector is provided on the top of the second frame and is connected to the second pipe structure. A second connecting box is installed on the outer wall of the second frame. One end of the second connecting box is connected to the interior of the second frame, and the other end of the second connecting box is connected to the first pipe structure. The sandblasting cylinder for aluminum profiles to pass through is rotatably assembled inside the second frame. Several sandblasting rings are detachably inserted into the inner wall of the sandblasting cylinder.

[0009] Furthermore, the sandblasting ring includes an inner ring, an outer ring, a first water inlet pipe, and a second water inlet pipe. The inner ring is provided with a plurality of sandblasting heads at intervals. The outer ring is detachably snapped onto the inner wall of the sandblasting cylinder. The outer ring has a plurality of spray holes at intervals on its sidewall. The outer ring has two concave cavities inside. The inner ring covers the outer ring so that the two concave cavities respectively form a first flow channel and a second flow channel. The first water inlet pipe and the second water inlet pipe are integrally formed on the outer ring on the side opposite to the inner ring. The first flow channel connects the sandblasting head and the first water inlet pipe, and the second flow channel connects the spray hole and the second water inlet pipe.

[0010] Furthermore, the feeding mechanism includes a feeding conveyor and a feeding transfer frame arranged sequentially along the feeding direction of the aluminum profile. The feeding transfer frame is rotatably provided with a feeding swing arm, and the feeding swing arm is provided with a feeding hook for limiting the aluminum profile. The feeding transfer frame is disposed between the feeding conveyor and the positioning component.

[0011] Furthermore, the unloading mechanism includes a first unloading transfer frame, an unloading conveyor frame, a second unloading transfer frame, and two unloading placement frames arranged sequentially along the unloading direction of the aluminum profile. The first unloading transfer frame is rotatably equipped with an unloading swing arm that has the same structure as the loading swing arm. The unloading placement frame is inclinedly equipped with a placement plate. The two placement plates are arranged facing each other, and a placement space for placing aluminum profiles is formed between the two placement plates.

[0012] Furthermore, the unloading mechanism also includes several transfer components slidably mounted on the second unloading transfer frame. Each transfer component includes a rotatably mounted transfer support wheel and two tilting arms that can swing relative to the second unloading transfer frame. The two tilting arms swing in opposite directions, and V-shaped grooves are formed on the tilting arms.

[0013] Furthermore, there are multiple positioning components, and each positioning component is equipped with a drive motor for controlling the rotation state of the auxiliary wheel. Attached Figure Description

[0014] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0015] Figure 1 This is one of the structural schematic diagrams of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 2 This is a second schematic diagram of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 3 yes Figure 2 A magnified schematic diagram of the structure of part A in the diagram; Figure 4 This is a schematic diagram of the transfer assembly of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the grinding assembly of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of the sandblasting mechanism of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 7 This is a partial structural schematic diagram of the sandblasting ring of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the sandblasting head of the aluminum profile sandblasting device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the elastic structure in the sandblasting head of the aluminum profile sandblasting device according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Grinding mechanism; 11. First frame; 12. Grinding assembly; 121. Inner frame; 122. Rotary shaft seat; 123. First grinding disc; 124. Second grinding disc; 125. Grinding rod; 126. Sand supply pipe; 127. Sand inlet funnel; 128. Sand outlet funnel; 2. Sandblasting mechanism; 21. Sandblasting ring; 211. Inner ring; 212. Outer ring; 213. First water inlet pipe; 214. Second water inlet pipe; 215. Spray hole; 22. Sandblasting head; 221. Sandblasting head body; 222. Nozzle; 223. Air inlet pipe; 224. Sand inlet pipe; 225. Connecting pipe; 226. Elastic structure; 2261. Slide rod ; 2262, Limiting block; 2263, Slide groove; 2264, Spring; 23, Second frame; 24, Sandblasting barrel; 25, Second connecting box; 3, Feeding mechanism; 31, Feeding conveyor frame; 32, Feeding transfer frame; 321, Feeding swing arm; 4, Unloading mechanism; 41, First unloading transfer frame; 411, Unloading swing arm; 42, Unloading conveyor frame; 43, Second unloading transfer frame; 44, Unloading placement frame; 441, Placement plate; 45, Transfer assembly; 451, Transfer support wheel; 452, Tilting arm; 5, First pipe structure; 6, Second pipe structure; 7, Positioning assembly; 71, Positioning seat; 72, Auxiliary wheel. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] In this invention, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0021] like Figure 1 , Figure 2 ... Figure 3 , Figure 6 and Figure 7 As shown, an aluminum profile sandblasting device according to an embodiment of the present invention includes a sandblasting system and a feeding mechanism 3 and a discharging mechanism 4 disposed on both sides of the sandblasting mechanism 2; the sandblasting system includes a grinding mechanism 1 and a sandblasting mechanism 2, the grinding mechanism 1 is connected to the sandblasting mechanism 2 through a first pipe structure 5, a plurality of sandblasting rings 21 are rotatably assembled inside the sandblasting mechanism 2, a plurality of sandblasting heads 22 are spaced apart on the sandblasting rings 21, and a second pipe structure 6 for dust recovery is connected to the sandblasting mechanism 2; both the feeding mechanism 3 and the discharging mechanism 4 are provided with positioning components 7, and positioning seats 71 are rotatably installed on the positioning components 7, and auxiliary wheels 72 are respectively provided at both ends of the positioning seats 71, and a positioning gap is formed between the auxiliary wheels 72 at both ends, and the aluminum profile is placed and positioned between the positioning gaps on both sides.

[0022] The aforementioned aluminum profile sandblasting device, by setting a rotatable sandblasting ring 21 within the sandblasting mechanism 2, allows multiple sandblasting heads 22 spaced apart on the sandblasting ring 21 to perform 360-degree rotational spraying around a stationary or slowly conveyed aluminum profile. This completely breaks the limitations of traditional fixed spray guns or unidirectional moving spray guns, ensuring that the entire outer circumference surface of the aluminum profile, including complex grooves and edges, can be uniformly covered by the sand flow, effectively eliminating sandblasting dead angles and achieving a highly consistent surface roughness, providing an excellent base for subsequent coating processes. The device integrates an automated system that combines feeding, sandblasting, unloading, abrasive circulation (through the first pipe structure 5), and dust recovery (through the second pipe structure 6). The entire process ensures smooth material flow with minimal human intervention, guaranteeing a clean working environment and meeting environmental protection requirements.

[0023] Meanwhile, the rotatable positioning seat 71 and auxiliary wheel 72 on the loading and unloading mechanism 4 can not only stably clamp and transport aluminum profiles, but their rotation function can also work in coordination with the rotation of the sandblasting ring 21. For example, during the sandblasting process, the aluminum profile can be controlled to rotate slowly, forming a compound motion with the rotation of the sandblasting ring 21. This further ensures the uniformity of sandblasting of ultra-long profiles in the length direction and avoids longitudinal stripes caused by being fixed, making it particularly suitable for large-volume, continuous production lines.

[0024] Specifically, both the first pipe structure 5 and the second pipe structure 6 are existing technologies. The technical effects of the first pipe structure 5 in conveying sandblasting abrasive and the technical effects of the second pipe structure 6 in recovering dust can be obtained by those skilled in the art without creative effort. Therefore, the specific technical features of the first pipe structure 5 and the second pipe structure 6 will not be described in detail here.

[0025] like Figure 2 As shown, in one embodiment, the grinding mechanism 1 includes a first frame 11 and a grinding assembly 12 disposed inside the first frame 11. A first connecting box is installed on the bottom outer wall of the first frame 11. One end of the first connecting box is connected to the bottom of the grinding assembly 12, and the other end of the first connecting box is connected to the first pipe structure 5. By directly installing the first connecting box on the bottom outer wall of the first frame 11, rather than placing it inside the frame or connecting it through complex external pipes, the shortest path and most direct connection between the inside of the grinding mechanism 1 (grinding assembly 12) and the external conveying pipe (first pipe structure 5) is achieved.

[0026] like Figure 2 and Figure 5As shown, in one embodiment, the grinding assembly 12 includes an inner frame 121, a rotating shaft seat 122, a first grinding disc 123, and a second grinding disc 124. The inner frame 121 is located inside the first frame 11, and the rotating shaft seat 122 is rotatably mounted on the inner frame 121. The first grinding disc 123 and the second grinding disc 124 are sequentially fitted onto the rotating shaft seat 122. A grinding groove is formed at the top of the first grinding disc 123. Several grinding rods 125 are fixed on the inner frame 121, extending into the grinding groove and fitting to the bottom of the groove. Multiple sand outlet holes are spaced apart at the bottom of the groove. The second grinding disc 124 communicates with the sand outlet holes through multiple first sand supply pipes 126, with each first sand supply pipe 126 corresponding to a sand outlet hole. After the abrasive enters the grinding groove, the grinding disc rotates under the drive of the rotating shaft seat 122, and the stationary grinding rods 125 subject the abrasive to strong impact, compression, and shearing. After preliminary treatment, the abrasive falls through multiple sand outlet holes spaced apart at the bottom of the tank. This process itself constitutes the first particle size screening (oversized particles or clumps remain in the tank for further grinding). The falling abrasive enters the second grinding disc 124 through the corresponding first sand supply pipe 126. The second grinding disc 124 can be designed with a structure that has a finer sorting function (such as a vibrating screen or a wind-powered sorting chamber) to perform secondary sorting and purification of the abrasive, ensuring that the abrasive particles that finally enter the first connecting box and are pumped to the sandblasting head 22 are uniform in size and have high cleanliness.

[0027] Specifically, the grinding action of the second grinding disc 124 is existing technology, and its specific technical features will not be further described here.

[0028] like Figure 5 As shown, in one embodiment, the grinding assembly 12 further includes an inlet funnel 127 and an outlet funnel 128. The inlet funnel 127 is mounted on top of the inner frame 121, and an inlet pipe 224 is inclinedly connected to the bottom outlet of the inlet funnel 127. The inlet pipe 224 is located above the grinding tank. The outlet funnel 128 is mounted at the bottom of the inner frame 121. The second grinding disc 124 is connected to the outlet funnel 128 through the second inlet pipe 126. An outlet pipe is connected to the bottom outlet of the outlet funnel 128, and the outlet pipe is connected to the first connecting box. The inlet funnel 127 ensures that the abrasive can enter the core working area directly in a concentrated and controllable flow, avoiding the abrasive from splashing or scattering in non-working areas during the falling process. The outlet funnel 128 forms a natural material collection and buffer space, which can smooth out the flow fluctuations that may exist from the previous stage, creating conditions for the subsequent stable delivery to the first connecting box through the outlet pipe.

[0029] like Figure 6 and Figure 7As shown, in one embodiment, the sandblasting mechanism 2 includes a second frame 23 and a sandblasting cylinder 24. A dust collector is mounted on the top of the second frame 23 and connected to a second pipe structure 6. A second connecting box 25 is installed on the outer wall of the second frame 23. One end of the second connecting box 25 communicates with the interior of the second frame 23, and the other end communicates with the first pipe structure 5. A sandblasting cylinder 24 for aluminum profiles to pass through is rotatably mounted inside the second frame 23. Several sandblasting rings 21 are detachably inserted into the inner wall of the sandblasting cylinder 24. When the sandblasting cylinder 24 rotates within the second frame 23, it drives all the sandblasting rings 21 on its inner wall to rotate together. This allows the sandblasting head 22, fixed on the sandblasting rings 21, to perform a circular motion around a stationary or slowly fed aluminum profile, thereby uniformly spraying the outer surface of the profile from all angles and more thoroughly eliminating uneven treatment caused by complex profile cross-sections or dead angles of the spray gun.

[0030] like Figure 7 As shown, in one embodiment, the blasting ring 21 includes an inner ring 211, an outer ring 212, a first water inlet pipe 213, and a second water inlet pipe 214. The inner ring 211 has multiple blasting heads 22 spaced apart. The outer ring 212 is detachably snapped onto the inner wall of the blasting cylinder 24. Multiple spray holes 215 are spaced apart on the side wall of the outer ring 212. The outer ring 212 has two recesses inside. The inner ring 211 covers the outer ring 212, so that the two recesses respectively form a first flow channel and a second flow channel. The first water inlet pipe 213 and the second water inlet pipe 214 are integrally formed on the outer ring 212 on the side opposite to the inner ring 211. The first flow channel connects the blasting head 22 and the first water inlet pipe 213, and the second flow channel connects the spray holes 215 and the second water inlet pipe 214. The first flow channel receives the abrasive through the first water inlet pipe 213 and connects to the blasting head 22, performing the core blasting impact function. Simultaneously, the second flow channel receives water or a special cleaning / lubricating fluid through the second water inlet pipe 214 and connects to the spray hole 215 on the side wall of the outer ring 212 to perform the function of spraying liquid. This allows sandblasting and liquid spraying to be performed simultaneously but independently on the same sandblasting ring 21. It can immediately wash away residual dust and debris on the profile surface after sandblasting, or perform process lubrication on specific abrasives, realizing process integration and synchronization, eliminating the need for subsequent separate cleaning steps, significantly shortening the overall processing cycle, and helping to obtain a cleaner surface.

[0031] like Figure 8 and Figure 9As shown, in one embodiment, the sandblasting head 22 includes a sandblasting head body 221 and a connecting pipe 225. The two ends of the sandblasting head body 221 are respectively equipped with a nozzle 222 and a sand inlet pipe 224. An air inlet pipe 223 is inclinedly provided on the outer wall of the sandblasting head body 221 and communicates with the interior of the sandblasting head body 22. A hexagonal nut is fixedly connected to the end of the connecting pipe 225. The hexagonal nut is threaded to the outer wall of the sand inlet pipe 224. A limiting groove is opened on the outer wall of the hexagonal nut. The outer wall of the limiting groove is arc-shaped. A sliding rod 2261 is fixedly connected to the outer wall of the sandblasting head body 221. A sliding sleeve is slidably connected to the outer wall of the sliding rod 2261. A limiting plate is installed on the outer wall of the sliding sleeve. The limiting plate is locked in the limiting groove. An elastic structure 226 is installed on the outer wall of the sliding rod 2261 to drive the limiting plate to be tightly locked in the limiting groove.

[0032] like Figure 8 and Figure 9 As shown, specifically, the elastic structure 226 includes a spring 2264 sleeved on the outer wall of the slide rod 2261. One end of the spring 2264 is fixedly connected to the outer wall of the sandblasting head body 221, and the other end of the spring 2264 is fixedly connected to the lower end face of the slide sleeve. By opening a limiting groove on the hexagonal nut and setting a limiting plate in the limiting groove, the limiting plate is always tightly engaged in the limiting groove by utilizing the elastic support force provided by the spring 2264. This prevents the nut from loosening due to vibration during sandblasting, improves the connection stability between the sandblasting head body 221 and the connecting pipe 225, reduces the risk of loosening of the equipment due to vibration, and thus enhances the safety and continuity of the sandblasting operation.

[0033] Specifically, a connecting rod is fixedly connected to the outer wall of the sliding sleeve. The outer wall of the connecting rod is L-shaped, and the end of the connecting rod is fixedly connected to the outer wall of the limiting plate.

[0034] like Figure 8 and Figure 9 As shown, furthermore, a limiting block 2262 is fixedly connected to the end of the slide rod 2261. The radius of the limiting block 2262 is larger than that of the slide rod 2261. A groove 2263 is formed on the outer wall of the slide rod 2261, and a slider is fixedly connected to the inner wall of the slide sleeve. Both outer walls of the slider are in close contact with the inner wall of the groove 2263. The movement of the slide sleeve on the slide rod 2261 is restricted by the groove 2263, which avoids the rotation or offset of the slide sleeve. This ensures that the limiting plate can always be accurately aligned with the limiting groove, ensuring precise engagement between the limiting plate and the limiting groove. This improves the connection accuracy and reliability of the entire sandblasting head 22, providing a more efficient sandblasting effect and a longer service life.

[0035] like Figure 1 and Figure 2As shown, in one embodiment, the feeding mechanism 3 includes a feeding conveyor frame 31 and a feeding transfer frame 32 arranged sequentially along the feeding direction of the aluminum profile. A feeding swing arm 321 is rotatably mounted on the feeding transfer frame 32, and a feeding hook for limiting the aluminum profile is protruding from the feeding swing arm 321. The feeding transfer frame 32 is positioned between the feeding conveyor frame 31 and the positioning assembly 7. The feeding swing arm 321 effectively avoids indentations or scratches on the surface of the aluminum profile that may be caused by a robotic gripper or rigid clamp, protecting the initial state of the workpiece. The rotational movement of the feeding swing arm 321 can smoothly lift the aluminum profile from its horizontal conveying posture and rotate it into the positioning gap between the two auxiliary wheels 72 of the positioning assembly 7.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the unloading mechanism 4 includes a first unloading transfer frame 41, an unloading conveyor frame 42, a second unloading transfer frame 43, and two unloading placement frames 44 arranged sequentially along the unloading direction of the aluminum profile. The first unloading transfer frame 41 is rotatably equipped with an unloading swing arm 411, which has the same structure as the loading swing arm 321. The unloading placement frames 44 are inclinedly equipped with placement plates 441, with the two placement plates 441 facing each other, forming a placement space between them for placing the aluminum profile. After sandblasting, the positioning component 7 releases the constraint on the profile, and the unloading swing arm 411 rotates, flexibly supporting and smoothly moving the profile out of the positioning gap. This "swinging out" action, which is symmetrical to the loading action, also avoids scratches or contamination that may be caused to the surface of the treated aluminum profile by rigid clamping or friction, completely protecting the surface quality obtained after sandblasting and ensuring the process results.

[0037] like Figure 2 and Figure 4 As shown, in one embodiment, the unloading mechanism 4 further includes several transfer components 45 slidably mounted on the second unloading transfer frame 43. Each transfer component 45 includes a rotatably mounted transfer support wheel 451 and two tilting arms 452 that can swing relative to the second unloading transfer frame 43. The two tilting arms 452 swing in opposite directions, and V-grooves are formed on the tilting arms 452. The combination of the transfer support wheel 451 and the V-grooved tilting arms 452 provides excellent tolerance for changes in the cross-sectional shape and size of the aluminum profile. The V-groove structure itself can adapt to cylindrical or profiles with approximate outer contours within a certain diameter range. By adjusting the swing angle of the tilting arms 452, profiles of different diameters or widths can be accommodated. This flexible design allows the same unloading mechanism 4 to easily handle diverse products without frequent tooling changes, reducing changeover costs and time. It not only improves the efficiency and accuracy of unloading and diversion but also provides a key hardware foundation for achieving flexible and intelligent control of the entire unloading process.

[0038] In one embodiment, there are multiple positioning components 7, each equipped with a drive motor for controlling the rotation of the auxiliary wheel 72. Each positioning component 7 is equipped with an independent drive motor. This makes the multiple support points (auxiliary wheels 72) distributed along the length of the aluminum profile no longer simple driven wheels, but rather active drive units that can be independently programmed and controlled.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A sandblasting device for aluminum profiles, characterized in that, include: A sandblasting system, comprising a grinding mechanism and a sandblasting mechanism, wherein the grinding mechanism is connected to the sandblasting mechanism via a first pipe structure, and a plurality of sandblasting rings are rotatably assembled inside the sandblasting mechanism, wherein a plurality of sandblasting heads are spaced apart on the sandblasting rings, and a second pipe structure for dust recovery is connected to the sandblasting mechanism. The loading and unloading mechanisms are arranged on both sides of the sandblasting mechanism. Each loading and unloading mechanism is equipped with a positioning component. A positioning seat is rotatably mounted on the positioning component. Auxiliary wheels are respectively provided at both ends of the positioning seat. A positioning gap is formed between the two auxiliary wheels. The aluminum profile is placed and positioned between the positioning gaps on both sides.

2. The aluminum profile sandblasting device according to claim 1, characterized in that, The grinding mechanism includes a first frame and a grinding component disposed inside the first frame. A first connecting box is installed on the bottom outer wall of the first frame. One end of the first connecting box is connected to the bottom of the grinding component, and the other end of the first connecting box is connected to the first pipe structure.

3. The aluminum profile sandblasting device according to claim 2, characterized in that, The grinding assembly includes an inner frame, a rotating shaft seat, a first grinding disc, and a second grinding disc. The inner frame is located inside the first frame, and the rotating shaft seat is rotatably mounted on the inner frame. The first grinding disc and the second grinding disc are sequentially fitted onto the rotating shaft seat. A grinding groove is formed on the top of the first grinding disc. Several grinding rods are fixed on the inner frame. The grinding rods extend into the grinding groove and are adapted to the bottom of the grinding groove. Multiple sand outlet holes are spaced apart on the bottom of the groove. The second grinding disc is connected to the sand outlet holes through multiple first sand supply pipes, and each first sand supply pipe corresponds to one of the sand outlet holes.

4. The aluminum profile sandblasting device according to claim 3, characterized in that, The grinding assembly also includes a sand inlet funnel and a sand outlet funnel. The sand inlet funnel is mounted on the top of the inner frame. A sand inlet pipe is inclinedly connected to the bottom outlet of the sand inlet funnel. The sand inlet pipe is located above the grinding tank. The sand outlet funnel is mounted on the bottom of the inner frame. The second grinding disc is connected to the sand outlet funnel through a second sand supply pipe. A sand outlet pipe is connected to the bottom outlet of the sand outlet funnel. The sand outlet pipe is connected to the first connecting box.

5. The aluminum profile sandblasting device according to claim 1, characterized in that, The sandblasting mechanism includes a second frame and a sandblasting cylinder. A dust collector is provided on the top of the second frame and is connected to the second pipe structure. A second connecting box is installed on the outer wall of the second frame. One end of the second connecting box is connected to the interior of the second frame, and the other end of the second connecting box is connected to the first pipe structure. The sandblasting cylinder for aluminum profiles to pass through is rotatably assembled inside the second frame. Several sandblasting rings are detachably inserted into the inner wall of the sandblasting cylinder.

6. The aluminum profile sandblasting device according to claim 5, characterized in that, The sandblasting ring includes an inner ring, an outer ring, a first water inlet pipe, and a second water inlet pipe. The inner ring has a plurality of sandblasting heads spaced apart. The outer ring is detachably snapped onto the inner wall of the sandblasting cylinder. The outer ring has a plurality of spray holes spaced apart on its sidewall. The outer ring has two cavities inside. The inner ring covers the outer ring so that the two cavities form a first flow channel and a second flow channel, respectively. The first water inlet pipe and the second water inlet pipe are integrally formed on the outer ring on the side opposite to the inner ring. The first flow channel connects the sandblasting head and the first water inlet pipe, and the second flow channel connects the spray hole and the second water inlet pipe.

7. The aluminum profile sandblasting device according to claim 1, characterized in that, The feeding mechanism includes a feeding conveyor and a feeding transfer frame arranged sequentially along the feeding direction of the aluminum profile. The feeding transfer frame is rotatably provided with a feeding swing arm, and the feeding swing arm is provided with a feeding hook for limiting the aluminum profile. The feeding transfer frame is disposed between the feeding conveyor and the positioning component.

8. The aluminum profile sandblasting device according to claim 7, characterized in that, The unloading mechanism includes a first unloading transfer frame, an unloading conveyor frame, a second unloading transfer frame, and two unloading placement frames arranged sequentially along the unloading direction of the aluminum profile. The first unloading transfer frame is rotatably equipped with an unloading swing arm that has the same structure as the loading swing arm. The unloading placement frame is inclinedly equipped with a placement plate. The two placement plates are arranged facing each other, and a placement space for placing aluminum profiles is formed between the two placement plates.

9. The aluminum profile sandblasting device according to claim 8, characterized in that, The unloading mechanism also includes several transfer components that are slidably mounted on the second unloading transfer frame. Each transfer component includes a rotatably mounted transfer support wheel and two tilting arms that can swing relative to the second unloading transfer frame. The two tilting arms swing in opposite directions, and V-shaped grooves are formed on the tilting arms.

10. The aluminum profile sandblasting device according to claim 1, characterized in that, The number of positioning components is multiple, and each positioning component is equipped with a drive motor for controlling the rotation state of the auxiliary wheel.

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