Multi-angle sand blasting and grinding device for metal profiles

Abstract

The invention discloses a multi-angle sand blasting and grinding device for metal profiles, which comprises a transmission mechanism and a sand blasting bin, the transmission mechanism is composed of a plurality of driving rollers and a plurality of limiting mechanisms, and each limiting mechanism is composed of an adjusting roller, a clamp and an adjusting sleeve; a plurality of adjusting mechanisms and a plurality of sand blasting mechanisms are arranged in the sand blasting bin, the adjusting mechanisms are connected with the upper surfaces of the sand blasting mechanisms, and the adjusting mechanisms are installed on the surface of the top end of the sand blasting bin in an embedded mode; the sand blasting mechanism is composed of a driving bin, a flow dividing bin, a feeding pipe, an impeller and a spray head. The impeller is arranged in the driving bin, the lower surface of the impeller is connected with the upper surface of the flow dividing bin, and the multiple spray heads are evenly distributed on the surface of the flow dividing bin in a spiral shape. The continuous sand blasting device can be matched with conveying of metal profiles, continuous sand blasting treatment can be conducted on the surfaces of the profiles, the positions of the spray heads can be freely combined, sand blasting dead angles can be effectively reduced, and the sand blasting treatment quality and the sand blasting treatment efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sandblasting, in particular to a multi-angle sandblasting and polishing device for metal profiles. Background Art

[0002] Metal profiles are objects with certain geometric shapes made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. This type of material has a certain appearance size, a certain cross-section shape, and certain mechanical and physical properties.

[0003] In the actual application of metal profiles, in order to prevent the surface of the metal profile from rusting, the surface of the metal profile is usually sandblasted and polished, and the surface of the metal profile is painted to achieve an isolation effect, which can effectively prevent the problem of rust on the surface of the profile.

[0004] For the existing sandblasting method, metal profiles have a certain length and are mostly processed by manual handheld sandblasting. Although it has the advantage of flexible grinding, there are many uncertain factors in the manual sandblasting method, which leads to the fact that the uniformity and efficiency of grinding cannot be guaranteed.

[0005] However, existing sandblasting equipment is often directional sandblasting, and the grinding range is relatively limited, and it is impossible to achieve comprehensive sandblasting. For longer metal profiles, fixed-direction sandblasting is more likely to produce grinding dead corners, which requires multiple treatments, increases the labor intensity of profile handling, and reduces grinding efficiency. Summary of the invention

[0006] The object of the present invention is to provide a multi-angle sandblasting and grinding device for metal profiles to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-angle sandblasting and polishing device for metal profiles, comprising a transmission mechanism and a sandblasting chamber, wherein the transmission mechanism is composed of a plurality of driving rollers and a plurality of limiting mechanisms, and the limiting mechanism is composed of an adjusting roller, a clamp and an adjusting sleeve;

[0008] A plurality of adjusting mechanisms and a plurality of sandblasting mechanisms are arranged inside the sandblasting chamber, wherein the adjusting mechanisms are connected to the upper surface of the sandblasting mechanisms, and the adjusting mechanisms are embedded and installed on the top surface of the sandblasting chamber;

[0009] The sandblasting mechanism is composed of a driving chamber, a diversion chamber, a feed pipe, an impeller and a nozzle;

[0010] The impeller is arranged inside the driving chamber, the lower surface of the impeller is connected to the upper surface of the diversion chamber, and the plurality of nozzles are evenly distributed on the surface of the diversion chamber in a spiral shape.

[0011] Preferably, the plurality of driving rollers and the plurality of limiting mechanisms are distributed in an equidistant and staggered manner inside the transmission mechanism;

[0012] One end of each of the plurality of driving rollers penetrating the outer wall of the transmission mechanism is connected to a motor.

[0013] Preferably, the clamp and the adjusting sleeve are both sleeved on the surface of the adjusting roller, the surface of the adjusting roller is provided with equidistant and evenly distributed limiting rings, and the adjusting sleeves are rotatably sleeved on the surface of the limiting rings;

[0014] The surface of the adjusting roller is provided with first limiting grooves evenly distributed in a circular array, and the inner wall of the clamp is provided with first limiting strips matched with the first limiting grooves.

[0015] Preferably, the plurality of clamps are symmetrically distributed on both sides of the adjustment sleeve, and the adjacent side surfaces of the plurality of clamps and the adjustment sleeve are provided with engaging grooves;

[0016] The adjusting sleeve is matched with the fitting groove, and the surface of the adjusting sleeve and the inner wall of the fitting groove are respectively provided with meshing threads, and the threads on the surfaces at both ends of the adjusting sleeve are in opposite directions.

[0017] Preferably, the adjustment mechanism is composed of a lifting rod, a positioning sleeve and an adjusting screw sleeve;

[0018] The positioning sleeve is embedded and installed inside the top of the sandblasting chamber, and the lifting rod is inserted into the positioning sleeve.

[0019] Preferably, the surface of the lifting rod is provided with second limiting grooves evenly distributed in a circular array, and the inner wall of the positioning sleeve is provided with second limiting strips matched with the second limiting grooves.

[0020] Preferably, the adjusting screw sleeve is rotatably mounted inside the upper end of the positioning sleeve, and the inner wall of the adjusting screw sleeve and the surface of the lifting rod are both provided with meshing threads.

[0021] Preferably, the feed pipe is communicated with the interior of the driving bin, and a hose is connected to the upper end of the feed pipe, and the feed pipe is distributed tangentially to the inner wall of the driving bin.

[0022] Preferably, a sealed bearing is provided between the outer wall of the diversion chamber and the inner wall of the driving chamber;

[0023] The surface of the diversion chamber is provided with mounting holes evenly distributed in a circular array, and nozzles and plugging heads are respectively installed in the plurality of mounting holes.

[0024] Preferably, a limit bearing is provided at the center position of the upper surface of the impeller, and the limit bearing is rotatably installed inside the lower end of the lifting rod.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention achieves the effect of rotating sandblasting and grinding the inside of the metal profile by setting a sandblasting mechanism. With the nozzle that can flexibly adjust the assembly position, it can have different sandblasting angles to achieve the effect of multi-angle sandblasting and grinding, thereby greatly improving the grinding range. It can be widely used in metal profiles of different cross-sections, effectively reducing the dead angles of sandblasting and grinding of metal profiles, and making the sandblasting treatment of the surface of the metal profile more comprehensive.

[0027] 2. The present invention is provided with an impeller, so that the compressed air in the sandblasting process is used as a driving source to drive the sandblasting mechanism to rotate. The compressed air in the sandblasting process is used to drag the impeller to rotate, which can save an external power source and reduce the equipment manufacturing cost. The impeller drives the sandblasting mechanism to rotate, so that the nozzle can perform rotating sandblasting on the surface of the metal profile, which is not only beneficial to increase the scope of the sandblasting treatment, but also beneficial to ensure the uniformity of the sandblasting and grinding.

[0028] 3. The present invention achieves the effect of adjusting the distance between the clamps and limiting the transmission of the transmitted metal profiles through the clamps by setting adjustment sleeves and clamps. The distance between the clamps can be adjusted to adapt to metal profiles of different specifications, and the clamping of the metal profile can not only maintain the transmission direction of the metal profile, but also maintain effective sandblasting and grinding between the metal profile and the sandblasting mechanism. In addition, by setting multiple clamps and multiple sandblasting mechanisms, sandblasting and grinding operations of multiple metal profiles can be performed simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the appearance structure of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of the sandblasting chamber of the present invention;

[0031] Figure 3 It is a schematic diagram of the appearance structure of the adjustment mechanism and the sandblasting mechanism of the present invention;

[0032] Figure 4 It is a schematic diagram of the explosion structure of the regulating mechanism and the sandblasting mechanism of the present invention;

[0033] Figure 5 It is a schematic diagram of the main cross-sectional structure of the sandblasting mechanism of the present invention;

[0034] Figure 6 It is a partial cross-sectional structural schematic diagram of the adjustment mechanism of the present invention;

[0035] Figure 7 It is a schematic diagram of the main structure of the limiting mechanism of the present invention;

[0036] Figure 8 It is a schematic diagram of the main cross-sectional structure of the adjustment sleeve and the clamp of the present invention.

[0037] In the figure:

[0038] 100, transmission mechanism; 110, driving roller; 111, motor; 120, limiting mechanism; 121, adjusting roller; 122, first limiting groove; 123, clamp; 124, adjusting sleeve; 125, fitting groove; 126, limiting ring; 127, first limiting strip;

[0039] 200, sandblasting chamber;

[0040] 300, adjustment mechanism; 310, lifting rod; 311, second limiting groove; 320, positioning sleeve; 321, second limiting strip; 330, adjustment screw sleeve;

[0041] 400, sandblasting mechanism; 410, driving chamber; 420, diversion chamber; 421, nozzle; 422, plugging head; 423, sealing bearing; 424, mounting hole; 430, feed pipe; 431, hose; 440, impeller; 441, limit bearing. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The present invention provides the following three embodiments:

[0044] Embodiment 1:

[0045] A multi-angle sandblasting and polishing device for metal profiles, comprising a transmission mechanism 100 and a sandblasting chamber 200, wherein the transmission mechanism 100 is composed of a plurality of driving rollers 110 and a plurality of limiting mechanisms 120, and the limiting mechanism 120 is composed of an adjusting roller 121, a clamp 123 and an adjusting sleeve 124;

[0046] See also Figure 1 , Figure 7 and Figure 8 A plurality of driving rollers 110 and a plurality of limiting mechanisms 120 are distributed in an equidistant and staggered manner inside the transmission mechanism 100. One end of the plurality of driving rollers 110 that penetrate the outer wall of the transmission mechanism 100 is connected to a motor 111. The motor 111 is used to drive the driving rollers 110 to rotate, thereby providing the transmission mechanism 100 with a power source for transmitting metal profiles.

[0047] The clamp 123 and the adjustment sleeve 124 are both sleeved on the surface of the adjustment roller 121. The surface of the adjustment roller 121 is provided with equidistant and evenly distributed limiting rings 126. The adjusting sleeves 124 are rotatably sleeved on the surface of the limiting rings 126. The surface diameter of the clamp 123 is the same as the surface diameter of the driving roller 110, and the limiting mechanism 120 can be flexibly rotated inside the transmission mechanism 100, so as to cooperate with the driving roller 110 to transmit the metal profile.

[0048] The staff can adjust the position of the clamp 123 according to the specifications of the metal profile. After the adjustment of the clamp 123 is completed, the staff places the metal profile on the transmission mechanism 100, and the motor 111 drives the driving roller 110 to rotate, so that the metal profile is transmitted between the driving roller 110 and the limiting mechanism 120. The clamp 123 limits the transmission direction of the metal profile, which can effectively maintain the linear transmission of the metal profile, which is beneficial to the subsequent metal profile through the sandblasting mechanism 400 to perform all-round sandblasting and polishing on the surface.

[0049] The surface of the adjusting roller 121 is provided with first limiting grooves 122 evenly distributed in a circular array, and the inner wall of the clamp 123 is provided with a first limiting strip 127 adapted to the first limiting groove 122. The first limiting groove 122 is used to limit the movement of the clamp 123. The first limiting strip 127 slides in the first limiting groove 122 to limit the movement of the clamp 123.

[0050] The plurality of clamps 123 are symmetrically distributed on both sides of the adjustment sleeve 124, and the adjacent side surfaces of the plurality of clamps 123 and the adjustment sleeve 124 are provided with engaging grooves 125;

[0051] The adjusting sleeve 124 is matched with the fitting groove 125, and the surface of the adjusting sleeve 124 and the inner wall of the fitting groove 125 are respectively provided with meshing threads, and the threads on the surfaces at both ends of the adjusting sleeve 124 are in opposite directions. Before sandblasting, the staff adjusts the spacing between the clamps 123 according to the size of the metal profile, and uses a wrench to rotate the adjusting sleeve 124. During the rotation of the adjusting sleeve 124, the threads on the surfaces at both ends of the adjusting sleeve 124 are respectively meshed and rotated with the threads on the inner wall of the fitting groove 125, thereby driving the two clamps 123 to move toward and away from the adjusting sleeve 124 synchronously, so as to achieve rapid adjustment of the spacing between the two clamps 123, so as to be suitable for metal profiles of different specifications.

[0052] Embodiment 2:

[0053] See also Figure 2 , Figure 3 , Figure 4 and Figure 6A plurality of adjusting mechanisms 300 and a plurality of sandblasting mechanisms 400 are arranged inside the sandblasting chamber 200 . The adjusting mechanisms 300 are connected to the upper surfaces of the sandblasting mechanisms 400 , and the adjusting mechanisms 300 are embedded and installed on the top surface of the sandblasting chamber 200 .

[0054] The adjusting mechanism 300 is composed of a lifting rod 310 , a positioning sleeve 320 and an adjusting screw sleeve 330 .

[0055] The positioning sleeve 320 is embedded and installed inside the top of the sandblasting chamber 200 , and the lifting rod 310 is inserted into the positioning sleeve 320 .

[0056] The lifting rod 310 is provided with second limiting grooves 311 evenly distributed in a circular array on its surface, and the inner wall of the positioning sleeve 320 is provided with second limiting strips 321 matched with the second limiting grooves 311 .

[0057] The adjusting screw sleeve 330 is rotatably mounted inside the upper end of the positioning sleeve 320 , and the inner wall of the adjusting screw sleeve 330 and the surface of the lifting rod 310 are both provided with meshing threads.

[0058] After the adjustment of the fixture 123 is completed, the staff adjusts the height of the sandblasting mechanism 400 and the position of the nozzle 421 on the surface of the diversion chamber 420 according to the process requirements of sandblasting, which can be applied to different sandblasting process requirements and the sandblasting range required for different metal profiles. By rotating the adjusting screw sleeve 330, the threads on the inner wall of the adjusting screw sleeve 330 are meshed with the threads on the surface of the lifting rod 310, and the second limiting strip 321 on the inner wall of the positioning sleeve 320 and the second limiting groove 311 on the surface of the lifting rod 310 can be used to achieve the effect of rotating the adjusting screw sleeve 330 to drive the lifting rod 310 to move up and down, thereby adjusting the movement of the sandblasting mechanism 400 in the vertical direction, which is conducive to adjusting the distance between the sandblasting mechanism 400 and the metal profile processing surface.

[0059] Embodiment three:

[0060] See also Figure 2 , Figure 3 , Figure 4 and Figure 5 The sandblasting mechanism 400 is composed of a driving chamber 410, a diversion chamber 420, a feeding pipe 430, an impeller 440 and a nozzle 421. According to the actual processing needs, multiple metal profiles can be sandblasted and polished simultaneously, and the sandblasting mechanism 400 can be arranged above and below the transmission mechanism 100 to achieve the synchronous sandblasting and polishing effect of the upper and lower surfaces of the metal profiles. With the continuous transmission of the metal profiles by the transmission mechanism 100, the metal profiles can be continuously and comprehensively sandblasted and polished, which can not only ensure the effect of sandblasting and polishing, but also help to improve the efficiency of sandblasting and polishing of metal profiles.

[0061] The feed pipe 430 is communicated with the interior of the driving chamber 410 , and a hose 431 is connected to the upper end of the feed pipe 430 . The feed pipe 430 and the inner wall of the driving chamber 410 are distributed in a tangent shape.

[0062] The impeller 440 is arranged inside the driving chamber 410. The compressed air and grinding sand required for sandblasting are input into the driving chamber 410 through the hose 431. The compressed air is transmitted through the feed pipe 430 and contacts the impeller 440 along the tangential direction of the inner wall of the driving chamber 410. The airflow of the compressed air drives the impeller 440 to rotate, and the impeller 440 simultaneously drives the diversion chamber 420 to rotate, which can save external power sources and reduce equipment manufacturing costs. In addition, the impeller 440 drives the sandblasting mechanism 400 to rotate, so that the nozzle 421 can perform rotating sandblasting on the surface of the metal profile, which is not only beneficial to increase the scope of sandblasting, but also beneficial to ensure the uniformity of sandblasting.

[0063] A limit bearing 441 is provided at the center position of the upper surface of the impeller 440, and the limit bearing 441 is rotatably installed inside the lower end of the lifting rod 310. The limit bearing 441 is used to limit the rotation axis of the impeller 440, reduce the vibration generated during the rotation of the impeller 440, and keep the overall rotation of the impeller 440 stable.

[0064] The lower surface of the impeller 440 is connected to the upper surface of the diversion chamber 420, and multiple nozzles 421 are evenly distributed on the surface of the diversion chamber 420 in a spiral shape. The metal profile is transmitted to the sandblasting chamber 200, and the compressed air and grinding sand required for sandblasting are input into the driving chamber 410 through the hose 431. The compressed air is transmitted through the feed pipe 430 and contacts the impeller 440 along the tangential direction of the inner wall of the driving chamber 410. The airflow of the compressed air drives the impeller 440 to rotate, and the impeller 440 synchronously drives the diversion chamber 420 to rotate. After the compressed air and the grinding sand pass through the inside of the impeller 440, they are transmitted to the diversion chamber 420. The compressed air carries the grinding sand and is ejected at a high speed from the nozzle 421. In conjunction with the rotation of the diversion chamber 420, the grinding sand can be sprayed onto the surface of the metal profile at different angles. After the grinding sand contacts the surface of the metal profile, the rust layer and the oxide layer on the surface of the metal profile are evenly polished to meet the grinding processing needs of the metal profile.

[0065] A sealing bearing 423 is provided between the outer wall of the diversion chamber 420 and the inner wall of the driving chamber 410. The sealing bearing 423 is used to seal the gap between the diversion chamber 420 and the driving chamber 410 to maintain the air tightness inside the diversion chamber 420 and the driving chamber 410, and avoid leakage of compressed air to reduce the effect of sandblasting.

[0066] The surface of the diversion bin 420 is provided with mounting holes 424 evenly distributed in a circular array, and nozzles 421 and plugging heads 422 are respectively installed in the multiple mounting holes 424. According to the cross-section of the metal profile, the staff can install the nozzles 421 on the mounting holes 424 at different positions on the surface of the diversion bin 420, and the interiors of the mounting holes 424 at other positions can be closed by installing the plugging heads 422, so that the nozzles 421 can fully act on the sandblasting and polishing treatment of the metal profile processing surface.

[0067] Working principle: Before sandblasting, the staff adjusts the distance between the clamps 123 according to the size of the metal profile, and uses a wrench to rotate the adjusting sleeve 124. During the rotation of the adjusting sleeve 124, the threads on the surfaces of both ends of the adjusting sleeve 124 are respectively engaged and rotated with the threads on the inner wall of the engaging groove 125, thereby driving the two clamps 123 to move toward and away from the adjusting sleeve 124 synchronously, thereby realizing the rapid adjustment of the distance between the two clamps 123, so as to be suitable for metal profiles of different specifications.

[0068] After the clamp 123 is adjusted, the staff places the metal profile on the transmission mechanism 100, and the motor 111 drives the driving roller 110 to rotate, so that the metal profile is transmitted between the driving roller 110 and the limiting mechanism 120. The clamp 123 limits the transmission direction of the metal profile, which can effectively maintain the linear transmission of the metal profile, which is beneficial to the subsequent metal profile through the sandblasting mechanism 400 to perform all-round sandblasting and polishing on the surface.

[0069] After the adjustment of the fixture 123 is completed, the staff adjusts the height of the sandblasting mechanism 400 and the position of the nozzle 421 on the surface of the diversion chamber 420 according to the process requirements of sandblasting, which can be applied to different sandblasting process requirements and the sandblasting range required for different metal profiles. By rotating the adjusting screw sleeve 330, the threads on the inner wall of the adjusting screw sleeve 330 are meshed with the threads on the surface of the lifting rod 310, and the second limiting strip 321 on the inner wall of the positioning sleeve 320 and the second limiting groove 311 on the surface of the lifting rod 310 can be used to achieve the effect of rotating the adjusting screw sleeve 330 to drive the lifting rod 310 to move up and down, thereby adjusting the movement of the sandblasting mechanism 400 in the vertical direction, which is conducive to adjusting the distance between the sandblasting mechanism 400 and the metal profile processing surface.

[0070] According to the cross-section of the metal profile, the staff can install the nozzle 421 on the mounting holes 424 at different positions on the surface of the diversion chamber 420, and the interior of the mounting holes 424 at other positions can be closed by installing the plugging head 422, so that the nozzle 421 can fully act on the sandblasting and polishing treatment of the metal profile processing surface.

[0071] During the sandblasting process, the metal profile is transmitted to the sandblasting chamber 200, and the compressed air and sand required for sandblasting are input into the driving chamber 410 through the hose 431. The compressed air is transmitted through the feed pipe 430 and contacts the impeller 440 along the tangential direction of the inner wall of the driving chamber 410. The airflow of the compressed air drives the impeller 440 to rotate, and the impeller 440 simultaneously drives the diversion chamber 420 to rotate. After the compressed air and the sand pass through the inside of the impeller 440, they are transmitted to the diversion chamber 420. The compressed air carries the sand and is ejected at high speed from the nozzle 421. With the rotation of the diversion chamber 420, the sand can be sprayed onto the surface of the metal profile at different angles. After the sand contacts the surface of the metal profile, the rust layer and the oxide layer on the surface of the metal profile are evenly polished to meet the grinding processing needs of the metal profile.

[0072] According to the actual processing needs, sandblasting and polishing of multiple metal profiles can be carried out simultaneously, and sandblasting mechanisms 400 can be set above and below the transmission mechanism 100 to achieve simultaneous sandblasting and polishing effects on the upper and lower surfaces of the metal profiles. In conjunction with the continuous transmission of the metal profiles by the transmission mechanism 100, the metal profiles can be continuously and comprehensively sandblasted and polished, which can not only ensure the sandblasting effect, but also help to improve the efficiency of sandblasting and polishing of metal profiles.

[0073] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A multi-angle sandblasting and grinding device for metal profiles, characterized in that: It comprises a transmission mechanism (100) and a sandblasting chamber (200), wherein the transmission mechanism (100) is composed of a plurality of driving rollers (110) and a plurality of limiting mechanisms (120), and the limiting mechanism (120) is composed of an adjusting roller (121), a clamp (123) and an adjusting sleeve (124); The sandblasting chamber (200) is provided with a plurality of adjustment mechanisms (300) and a plurality of sandblasting mechanisms (400), wherein the adjustment mechanisms (300) are connected to the upper surfaces of the sandblasting mechanisms (400), and the adjustment mechanisms (300) are embedded and installed on the top surface of the sandblasting chamber (200); The sandblasting mechanism (400) is composed of a driving chamber (410), a diversion chamber (420), a feed pipe (430), an impeller (440) and a spray head (421); The impeller (440) is arranged inside the driving chamber (410), the lower surface of the impeller (440) is connected to the upper surface of the diversion chamber (420), and the plurality of nozzles (421) are evenly distributed on the surface of the diversion chamber (420) in a spiral shape.

2. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: The plurality of driving rollers (110) and the plurality of limiting mechanisms (120) are distributed in an equidistant and staggered manner inside the transmission mechanism (100); One end of each of the plurality of driving rollers (110) that passes through the outer wall of the transmission mechanism (100) is connected to a motor (111).

3. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: The clamp (123) and the adjusting sleeve (124) are both sleeved on the surface of the adjusting roller (121); the surface of the adjusting roller (121) is provided with equidistant and evenly distributed limiting rings (126); and the adjusting sleeves (124) are rotatably sleeved on the surface of the limiting rings (126); The surface of the adjusting roller (121) is provided with first limiting grooves (122) uniformly distributed in a circular array, and the inner wall of the clamp (123) is provided with first limiting strips (127) adapted to the first limiting grooves (122).

4. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: The plurality of clamps (123) are symmetrically distributed on both sides of the adjustment sleeve (124), and the adjacent side surfaces of the plurality of clamps (123) and the adjustment sleeve (124) are provided with engaging grooves (125); The adjusting sleeve (124) is matched with the fitting groove (125), and the surface of the adjusting sleeve (124) and the inner wall of the fitting groove (125) are respectively provided with meshing threads, and the threads on the surfaces at both ends of the adjusting sleeve (124) are in opposite directions.

5. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: The adjusting mechanism (300) is composed of a lifting rod (310), a positioning sleeve (320) and an adjusting screw sleeve (330); The positioning sleeve (320) is embedded and installed inside the top of the sandblasting chamber (200), and the lifting rod (310) is inserted into the positioning sleeve (320).

6. The multi-angle sandblasting and polishing device for metal profiles according to claim 5, characterized in that: The surface of the lifting rod (310) is provided with second limiting grooves (311) evenly distributed in a circular array, and the inner wall of the positioning sleeve (320) is provided with a second limiting strip (321) matched with the second limiting grooves (311).

7. The multi-angle sandblasting and polishing device for metal profiles according to claim 5, characterized in that: The adjusting screw sleeve (330) is rotatably mounted inside the upper end of the positioning sleeve (320), and the inner wall of the adjusting screw sleeve (330) and the surface of the lifting rod (310) are both provided with meshing threads.

8. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: The feed pipe (430) is communicated with the interior of the driving chamber (410), and a hose (431) is connected to the upper end of the feed pipe (430). The feed pipe (430) and the inner wall of the driving chamber (410) are distributed in a tangent shape.

9. The multi-angle sandblasting and polishing device for metal profiles according to claim 1, characterized in that: A sealed bearing (423) is provided between the outer wall of the diversion chamber (420) and the inner wall of the driving chamber (410); The surface of the diversion chamber (420) is provided with mounting holes (424) evenly distributed in a circular array, and a nozzle (421) and a plugging head (422) are respectively installed in the plurality of mounting holes (424).

10. A multi-angle sandblasting and grinding device for metal profiles according to claim 1 or 5, characterized in that: A limit bearing (441) is provided at the center of the upper surface of the impeller (440), and the limit bearing (441) is rotatably mounted inside the lower end of the lifting rod (310).

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