Hub powder spraying moving structure with powder suction device

Abstract

The hub powder spraying moving structure with the powder suction device comprises a rack, the middle of a top plate of the rack is movably connected with a main shaft body through a bearing, the top face of the main shaft body is provided with a horizontal rotating plate, and the horizontal rotating plate is detachably and fixedly connected with the top end of the main shaft body; a rotating servo motor is mounted on a top plate of the rack, the top end of an output shaft of the rotating servo motor extends out of the top surface of the top plate of the rack and is fixedly provided with a driving gear, a transmission gear is fixed on the outer side wall of the main shaft body, and the transmission gear is meshed with the driving gear; in the powder spraying process, dust collection can be carried out on the part around the center hole and the bottom face of the hub part, powder is prevented from being attached and accumulated on the center hole and the bottom face of the hub part, the installation precision of the center hole and the bottom face of the hub part is guaranteed, parts such as plugs do not need to be manually installed or disassembled, the manual labor amount is greatly reduced, and the using effect is good.

Description

Technical Field

[0001] The invention relates to the technical field related to wheel hub coating equipment, and more specifically to a mobile structure for wheel hub powder spraying with a powder suction device. Background Art

[0002] The existing wheel hub coating method generally adopts the powder spraying process, which refers to a coating process that uses corona discharge to make powder coating adhere to the workpiece. After powder spraying, it is successfully coated by thermal coating.

[0003] When the wheel hub is powder sprayed, the center hole and the bottom end surface of the hub of the wheel hub cannot be sprayed with dust due to assembly requirements. Therefore, the existing method is to manually seal the center hole with a plug or a shielding object, and then manually remove the plug and other shielding objects after the powder spraying is completed, which is very troublesome and increases the amount of manual labor. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a mobile structure for wheel hub powder spraying with a powder suction device, which can suction dust around the center hole and the bottom surface of the hub during the powder spraying process to prevent powder from adhering and accumulating thereon, thereby ensuring the installation accuracy of the center hole and the bottom surface of the hub. There is no need for manual installation and disassembly of parts such as plugs, which greatly reduces the amount of manual labor and has a good use effect.

[0005] The solution of the present invention to solve the technical problem is: A mobile structure for wheel hub powder spraying with a powder suction device comprises a frame, a main shaft body is movably connected to the middle of the top plate of the frame through a bearing, a horizontal rotating plate is installed on the top surface of the main shaft body, and the horizontal rotating plate is detachably fixedly connected to the top of the main shaft body; A rotary servo motor is installed on the top plate of the frame, the top end of the output shaft of the rotary servo motor extends out of the top surface of the top plate of the frame and is fixed with a driving gear, a transmission gear is fixed on the outer wall of the main shaft body, and the transmission gear is meshed with the driving gear; The left, right, front and rear parts of the top surface of the horizontal rotating plate are all formed with air guide holes, the bottom outer wall of the vertical air guide pipe is clamped on the inner wall of the corresponding air guide hole and fixed by welding, the top of the vertical air guide pipe is connected with a disc-shaped adsorption shell, the middle part of the top plate of the disc-shaped adsorption shell is formed with an extension sleeve part extending upward, the middle part of the extension sleeve part is connected with the disc-shaped adsorption shell, and the top of the extension sleeve part is connected with a cylindrical shell part; A plurality of upper air suction holes are formed on the top plate of the disc-shaped adsorption shell, and a plurality of side air suction holes are formed on the outer side wall of the cylindrical shell portion; The bottom end surface of the hub of the wheel hub to be processed is pressed against the top surface of the top plate of the disc-shaped adsorption shell and is above the corresponding upper air intake holes. The PCD holes on the hub are facing the corresponding multiple upper air intake holes. The cylindrical shell part is inserted into the center hole in the middle of the hub, and the outer wall of the cylindrical shell part is close to the inner wall of the center hole.

[0006] The rotary servo motor is fixed on the bottom surface of the top plate of the frame, and the top end of the output shaft of the rotary servo motor extends out of the top surface of the top plate of the frame and is fixed with a driving gear.

[0007] An outer sleeve is movably connected to the outer wall of the vertical air guide tube through multiple bearings, a self-rotating drive motor is fixed to the middle part of the bottom surface of the horizontal rotating plate, the self-rotating drive motor is inserted into the vertical through hole in the middle part of the main shaft body, the top end of the output shaft of the self-rotating drive motor extends out of the top surface of the horizontal rotating plate and is fixed with a middle rotating gear, a self-rotating external tooth portion is formed or formed on the bottom outer wall of the outer sleeve, an intermediate transition gear is provided between the self-rotating external tooth portion and the middle rotating gear, the middle part of the intermediate transition gear is fixed to the top surface of the horizontal rotating plate through the bottom of the rotating shaft movably connected by the bearing, the self-rotating external tooth portion is meshed with the corresponding intermediate transition gear, and the intermediate transition gear is meshed with the middle rotating gear.

[0008] An upper protective cover shell is fixed on the top surface of the horizontal rotating plate, and the top of the rotating shaft of the intermediate transition gear is fixed on the top plate of the upper protective cover body; The vertical air duct and the outer sleeve are inserted into the corresponding vertical through holes on the top plate of the upper protective cover shell.

[0009] The inner wall of the vertical through hole is tightly attached to the outer wall of the wear-resistant self-lubricating sleeve, the top of the wear-resistant self-lubricating sleeve extends out of the top of the vertical through hole, and a radially extending edge is formed on its outer wall. The bottom surface of the radially extending edge is pressed against the top surface of the top plate of the upper protective cover shell and is fixedly connected to the top surface of the top plate of the upper protective cover shell by multiple bolts. The outer sleeve is inserted into the wear-resistant self-lubricating sleeve, and the outer wall of the outer sleeve is close to the corresponding inner wall of the wear-resistant self-lubricating sleeve.

[0010] A plurality of annular grooves are formed on the outer wall of the outer sleeve, and the sealing ring is nested in the annular grooves, and the outer wall of the sealing ring is closely attached to the inner wall of the corresponding wear-resistant self-lubricating sleeve body.

[0011] A circular support platform is fixed on the top of the outer sleeve, and the outer side wall of the circular support platform is a conical wall surface, on which an elastic anti-slip sleeve is fixed, and the outer side wall of the elastic anti-slip sleeve is pressed against the conical inner side wall of the rim of the wheel hub; The top of the vertical air guide tube extends out of the top end of the middle through hole of the circular support platform and the top surface of the circular support platform.

[0012] A plug-in sleeve extending downward is fixed to the middle of the bottom surface of the bottom plate of the disc-shaped adsorption shell, the plug-in sleeve is connected to and aligned with the middle through hole of the bottom plate of the disc-shaped adsorption shell, the top of the vertical air duct is clamped in the plug-in sleeve, the top outer wall of the vertical air duct is pressed against the inner wall of the plug-in sleeve, a plurality of annular grooves are formed on the inner wall of the plug-in sleeve, the first sealing ring is nested in the annular groove, and the inner wall of the first sealing ring is pressed against the outer wall of the vertical guide tube.

[0013] An upper plug-in sleeve portion extending downward is formed in the middle of the bottom surface of the bottom plate of the cylindrical shell portion, the upper plug-in sleeve portion is communicated with the middle through hole of the bottom plate of the cylindrical shell portion, the upper plug-in sleeve portion is clamped in the extended sleeve portion, the outer side wall of the upper plug-in sleeve portion is pressed against the inner side wall of the extended sleeve portion, a plurality of outer annular grooves are formed on the inner side wall of the extended sleeve portion, the second sealing ring is nested in the outer annular groove, and the inner side wall of the second sealing ring is pressed against the outer side wall of the upper plug-in sleeve portion.

[0014] A self-lubricating wear-resistant top plate is fixed to the bottom surface of the edge of the top plate of the disc-shaped adsorption shell, and a plurality of upper adsorption through holes are formed on the self-lubricating wear-resistant top plate. The upper adsorption through holes are aligned with and communicated with the corresponding upper air suction through holes.

[0015] The inner end surface of the hub portion of the wheel hub is pressed against the top surface of the self-lubricating wear-resistant top plate.

[0016] A plurality of vertical columns are fixed to the top edge of the main shaft body, a plurality of main connecting through holes are formed in the middle of the horizontal rotating plate, a main anti-skid elastic sleeve is fixed on the inner wall of the main connecting through hole, and the vertical columns are clamped in the corresponding main anti-skid elastic sleeve.

[0017] An annular connecting shell is fixed to the bottom edge of the horizontal rotating plate, a first annular cavity is formed between the annular connecting shell and the bottom surface of the horizontal rotating plate, all the air guide holes are connected to the first annular cavity, a plurality of first side through holes are formed on the outer plate of the annular connecting shell, the first side through holes are connected to the first annular cavity, and the bottom plate of the lower annular supporting shell is fixed to the top surface of the top plate of the frame; An inner annular wall plate and an outer annular wall plate are respectively formed in the middle and inner side of the top surface of the bottom plate of the lower annular support shell, an inner radial extension edge is formed on the top inner wall of the inner annular wall plate, an annular self-lubricating plate is fixed to the bottom surface of the bottom plate of the annular connection shell, the bottom surface of the annular self-lubricating plate is pressed against the top surface of the inner annular wall plate and the top surface of the inner radial extension edge, an annular groove is formed at the top surface of the inner annular wall plate, a third sealing ring is nested in the annular groove, and the top surface of the third sealing ring is tightly against the bottom surface of the annular self-lubricating plate; the bottom plate, the inner annular wall plate and the outer annular wall plate of the lower annular support shell form a lower annular cavity; A second radial extension is formed on the inner side wall of the top of the outer annular wall plate, a self-lubricating wear-resistant layer is fixed on the inner side wall of the second radial extension, the self-lubricating wear-resistant layer is closely attached to the outer side wall of the outer side plate of the lower annular support shell, and the first side through hole is connected to the lower annular cavity; The lower part of the inner annular wall plate is connected with a plurality of air suction connectors, and the top plate of the frame is formed with a plurality of conduit insertion holes corresponding to the air suction connectors.

[0018] A connecting plate is fixed on the bottom end surface of the main shaft body, a rotating electric connector is fixed on the connecting plate, and an electric connecting line at the bottom of the self-rotating driving motor is electrically connected to the rotating electric connector.

[0019] The outstanding effects of the present invention are: It can vacuum the area around the center hole and the bottom surface of the hub during the powder spraying process to prevent powder from adhering and accumulating on them, thereby ensuring the installation accuracy of the center hole and the bottom surface of the hub. It does not require manual installation and disassembly of parts such as plugs, greatly reducing manual labor and achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial structural schematic diagram of the present invention; Figure 2 yes Figure 1 A partial enlarged view of the first location; Figure 3 yes Figure 1 A partial enlarged view of the second location; Figure 4 yes Figure 1 A partial enlarged view of the third location; Figure 5 It is a local top view of the horizontal rotating plate. DETAILED DESCRIPTION

[0021] For example, see Figures 1 to 5 As shown, a mobile structure for wheel hub powder spraying with a powder suction device comprises a frame 10, the bottom of the frame 10 is fixed on the ground or other working platforms, the middle of the top plate of the frame 10 is movably connected with a main shaft body 20 through a bearing, and a horizontal rotating plate 21 is installed on the top surface of the main shaft body 20, and the horizontal rotating plate 21 is detachably fixedly connected to the top of the main shaft body 20; Its specific structure is: multiple vertical columns 3 are fixed on the top edge of the main shaft body 20, multiple main connecting holes 211 are formed in the middle of the horizontal rotating plate 21, and main anti-slip elastic sleeves 212 are fixed on the inner side walls of the main connecting holes 211, and the vertical columns 3 are clamped in the corresponding main anti-slip elastic sleeves 212.

[0022] The above structure makes it possible that when disassembly is required, it is only necessary to disassemble the rotating electrical connector (also called a through-hole slip ring, etc., which is a product that can be directly purchased on the market and will not be described in detail here) on the connecting plate fixed at the bottom end of the main shaft body 20 and then lift the horizontal rotating plate 21 upward to separate it from the frame 10 and other components, making disassembly, repair and maintenance and other operations convenient.

[0023] A rotary servo motor 11 is mounted on the top plate of the frame 10, the top end of the output shaft of the rotary servo motor 11 extends out of the top surface of the top plate of the frame 10 and is fixed with a driving gear 12, and a transmission gear 22 is fixed on the outer wall of the spindle body 20, and the transmission gear 22 is meshed with the driving gear 12; The left, right, front and rear parts of the top surface of the horizontal rotating plate 21 are all formed with air guide holes 23, the bottom outer wall of the vertical air guide pipe 24 is clamped on the inner wall of the corresponding air guide hole 23 and fixed by welding, the top of the vertical air guide pipe 24 is connected with a disc-shaped adsorption shell 30, the middle part of the top plate of the disc-shaped adsorption shell 30 is formed with an extension sleeve part 31 extending upward, the middle part of the extension sleeve part 31 is communicated with the disc-shaped adsorption shell 30, the top of the extension sleeve part 31 is connected with a cylindrical shell part 40, and the inner cavity of the cylindrical shell part 40 is communicated with the inner cavity of the disc-shaped adsorption shell 30; A plurality of upper air intake holes 32 are formed on the top plate of the disc-shaped adsorption shell 30, and the upper air intake holes 32 are communicated with the inner cavity of the disc-shaped adsorption shell 30. A plurality of side air intake holes 41 are formed on the outer wall of the cylindrical shell part 40, and the side air intake holes 41 are communicated with the inner cavity of the cylindrical shell part 40. The bottom end surface of the hub portion 101 of the wheel hub 100 to be processed is pressed against the top surface of the top plate of the disc-shaped adsorption shell 30 and is above the corresponding upper air intake holes 32. The PCD holes on the hub portion 101 face the corresponding multiple upper air intake holes 32. The cylindrical shell portion 40 is inserted into the center hole in the middle of the hub portion 101, and the outer wall of the cylindrical shell portion 40 is close to the inner wall of the center hole.

[0024] Specifically, the rotary servo motor 11 is fixed on the bottom surface of the top plate of the frame 10 , and the top end of the output shaft of the rotary servo motor 11 extends out of the top surface of the top plate of the frame 10 and is fixed with a driving gear 12 .

[0025] Furthermore, an outer sleeve 25 is movably connected to the outer wall of the vertical air duct 24 through a plurality of bearings, a self-rotation drive motor 26 is fixed to the middle part of the bottom surface of the horizontal rotating plate 21, and the self-rotation drive motor 26 is inserted into the vertical through hole in the middle part of the main shaft body 20. The top end of the output shaft of the self-rotation drive motor 26 extends out of the top surface of the horizontal rotating plate 21 and is fixed with a middle rotating gear 27. A self-rotation external tooth portion 251 is formed or fixed on the outer wall of the bottom of the outer sleeve 25, and an intermediate transition gear 28 is provided between the self-rotation external tooth portion 251 and the middle rotating gear 27. The middle part of the intermediate transition gear 28 is fixed to the top surface of the horizontal rotating plate 21 through the bottom of the rotating shaft movably connected by the bearing, the self-rotation external tooth portion 251 is meshed with the corresponding intermediate transition gear 28, and the intermediate transition gear 28 is meshed with the middle rotating gear 27.

[0026] Furthermore, an upper protective cover shell 29 is fixed to the top surface of the horizontal rotating plate 21, and the top of the rotating shaft of the intermediate transition gear 28 is fixed to the top plate of the upper protective cover body 29; The vertical air duct 24 and the outer sleeve 25 are inserted into the corresponding vertical through holes 291 on the top plate of the upper protective cover shell 29 .

[0027] Furthermore, the inner wall of the vertical through hole 291 is tightly attached to the outer wall of the wear-resistant self-lubricating sleeve 292, and the top of the wear-resistant self-lubricating sleeve 292 extends out of the top of the vertical through hole 291. A radial extension edge is formed on its outer wall, and the bottom surface of the radial extension edge is pressed against the top surface of the top plate of the upper protective cover shell 29 and is fixedly connected to the top surface of the top plate of the upper protective cover shell 29 by multiple bolts. The outer sleeve 25 is inserted into the wear-resistant self-lubricating sleeve 292, and the outer wall of the outer sleeve 25 is close to the corresponding inner wall of the wear-resistant self-lubricating sleeve 292.

[0028] A plurality of annular grooves are formed on the outer wall of the outer sleeve 25 , and the sealing rings are nested in the annular grooves. The outer wall of the sealing ring is in close contact with the inner wall of the corresponding wear-resistant self-lubricating sleeve body 292 .

[0029] Furthermore, a circular support platform 251 is fixed on the top of the outer sleeve 25. The circular support platform 251 includes a bottom plate and a conical side plate formed on the outer top surface of the bottom plate. The outer wall of the circular support platform 251 is a conical wall surface, that is, the outer wall of the conical side plate is a conical wall surface, and an elastic anti-slip sleeve 252 is fixed thereon. The outer wall of the elastic anti-slip sleeve 252 is also a conical wall surface. The outer wall of the elastic anti-slip sleeve 252 is pressed against the conical inner wall of the rim of the wheel hub 100. The top of the vertical air duct 24 extends out of the top of the middle through hole of the circular support platform 251 and the top surface of the circular support platform 251 .

[0030] Furthermore, a downwardly extending plug sleeve 33 is fixed to the middle of the bottom surface of the bottom plate of the disc-shaped adsorption shell 30, the plug sleeve 33 is connected to and aligned with the middle through hole of the bottom plate of the disc-shaped adsorption shell 30, the top of the vertical air duct 24 is clamped in the plug sleeve 33, the top outer wall of the vertical air duct 24 is pressed against the inner wall of the plug sleeve 33, a plurality of annular grooves are formed on the inner wall of the plug sleeve 33, the first sealing ring is nested in the annular groove, and the inner wall of the first sealing ring is pressed against the outer wall of the vertical guide tube 24.

[0031] Furthermore, a downwardly extending upper plug-in sleeve portion 42 is formed in the middle of the bottom surface of the bottom plate of the cylindrical shell portion 40, and the upper plug-in sleeve portion 42 is communicated with the middle through hole of the bottom plate of the cylindrical shell portion 40. The upper plug-in sleeve portion 42 is clamped in the extension sleeve portion 31, and the outer side wall of the upper plug-in sleeve portion 42 is pressed against the inner side wall of the extension sleeve portion 31. A plurality of outer annular grooves are formed on the inner side wall of the extension sleeve portion 31, and the second sealing ring is nested in the outer annular groove, and the inner side wall of the second sealing ring is pressed against the outer side wall of the upper plug-in sleeve portion 42.

[0032] Furthermore, a self-lubricating wear-resistant top plate 1 is fixed to the bottom surface of the edge of the top plate of the disc-shaped adsorption shell 30, and a plurality of upper adsorption through holes 2 are formed on the self-lubricating wear-resistant top plate 1. The upper adsorption through holes 2 are aligned with and communicated with the corresponding upper air intake through holes 32.

[0033] The inner end surface of the hub portion 101 of the wheel hub 100 is pressed against the top surface of the self-lubricating wear-resistant top plate 1 .

[0034] Furthermore, an annular connection shell 50 is fixed to the bottom edge of the horizontal rotating plate 21, a first annular cavity is formed between the annular connection shell 50 and the bottom surface of the horizontal rotating plate 21, all the air guide holes 23 are connected to the first annular cavity, a plurality of first side through holes 51 are formed on the outer plate of the annular connection shell 50, the first side through holes 51 are connected to the first annular cavity, and the bottom plate of the lower annular support shell 60 is fixed to the top surface of the top plate of the frame 10; An inner annular wall plate 61 and an outer annular wall plate 62 are respectively formed in the middle and inner side of the top surface of the bottom plate of the lower annular support shell 60, an inner radial extension edge 611 is formed on the top inner side wall of the inner annular wall plate 61, an annular self-lubricating plate 52 is fixed to the bottom surface of the bottom plate of the annular connection shell 50, the bottom surface of the annular self-lubricating plate 52 is pressed against the top surface of the inner annular wall plate 61 and the top surface of the inner radial extension edge 611, an annular groove is formed at the top surface of the inner annular wall plate 61, a third sealing ring is nested in the annular groove, and the top surface of the third sealing ring is tightly against the bottom surface of the annular self-lubricating plate 52; the bottom plate of the lower annular support shell 60, the inner annular wall plate 61 and the outer annular wall plate 62 form a lower annular cavity; A second radial extension 621 is formed on the inner side wall of the top of the outer annular wall plate 62, and a self-lubricating wear-resistant layer 622 is fixed on the inner side wall of the second radial extension 621. The self-lubricating wear-resistant layer 622 is closely attached to the outer side wall of the outer side plate of the annular connection shell 50 (to achieve a sealing and guiding effect during rotation. When there is a small gap, it may inhale a part of the external gas, but it basically does not affect the overall adsorption effect). The first side through hole 51 is connected to the lower annular cavity; The lower part of the inner annular wall plate 61 is connected with a plurality of air suction connectors 63 , and the top plate of the frame 10 is formed with a plurality of conduit insertion holes 5 corresponding to the air suction connectors 63 .

[0035] Furthermore, a connecting plate is fixed on the bottom end surface of the spindle body 20, a rotating electric connector is fixed on the connecting plate, and an electric connecting line at the bottom of the rotation drive motor 26 is electrically connected to the rotating electric connector.

[0036] In this embodiment, the air suction connector 63 is connected to the air suction port of the external dust removal equipment through a connecting pipe to achieve air suction. The connecting pipe can extend downward from the duct insertion hole 5 and extend to the outside of the frame 10 to be connected to the air suction port of the external dust removal equipment, thereby achieving air suction and dust filtering, and the filtered dust can be reused.

[0037] When the present embodiment is in use, the wheel hub 100 is placed on the circular support platform 251, so that the outer wall of the elastic anti-slip sleeve 252 is pressed against the tapered inner wall of the rim of the wheel hub 100, and the inner end surface of the hub portion 101 of the wheel hub 100 is pressed against the top surface of the self-lubricating wear-resistant top plate 1, and at the same time, the cylindrical shell portion 40 is inserted into the central hole in the middle of the hub portion 101, and the outer wall of the cylindrical shell portion 40 is close to the inner wall of the central hole; Then, the self-rotating driving motor 26 is operated to rotate the middle rotating gear 27, driving all the intermediate transition gears 28 to rotate, and the intermediate transition gears 28 drive the corresponding self-rotating outer gears 251 to rotate, thereby realizing the rotation of the outer sleeve 25, realizing the rotation of the circular support platform 251, and making the wheel hub 100 rotate; Then, the horizontal rotating plate 21 is rotated by operating the rotating servo motor 11. Since the left, right, front and rear parts of the horizontal rotating plate 21 are all formed with air guide holes 23, the left, right, front and rear parts of the horizontal rotating plate 21 are all provided with vertical air guide pipes 24 and other components, it has four stations and can install four wheel hubs 100 at the same time. Powder spraying is one of the workstations. After the wheel hub 100 at the corresponding workstation is powder-sprayed, the servo motor 11 can be rotated 90° to move the position of another wheel hub 100 to the powder spraying workstation, and then the relevant operations can be carried out to achieve continuous processing, with a high degree of automation and good effect. During powder spraying, the dust on the inner side wall of the center hole is adsorbed and removed by the multiple side suction holes 41 formed on the outer side wall of the cylindrical shell part 40 to prevent adhesion, so that the dust meets the processing accuracy. At the same time, the upper air intake hole 32 of the disc-shaped adsorption shell 30 adsorbs the dust on the bottom surface of the hub 100, and the dust falling from the pcd hole can also be directly adsorbed and removed, which is very convenient. It does not require manual installation of caps, plugs and other components, has a high degree of automation and good effect.

[0038] When this embodiment is in use, its cylindrical shell part 40, disc-shaped adsorption shell 30 and vertical air duct 24 are all connected by plug-in connection, so that when disassembling, it is only necessary to pull the corresponding parts upwards to separate them, which is very convenient for disassembly, replacement, repair and maintenance.

Claims

1. A mobile structure for wheel hub powder spraying with a powder suction device, comprising a frame (10), characterized in that: The middle part of the top plate of the frame (10) is movably connected to a main shaft body (20) via a bearing, a horizontal rotating plate (21) is installed on the top surface of the main shaft body (20), and the horizontal rotating plate (21) is detachably fixedly connected to the top of the main shaft body (20); A rotary servo motor (11) is mounted on the top plate of the frame (10); the top end of the output shaft of the rotary servo motor (11) extends out of the top surface of the top plate of the frame (10) and is fixed with a driving gear (12); a transmission gear (22) is fixed on the outer wall of the main shaft body (20), and the transmission gear (22) is meshed with the driving gear (12); The left, right, front and rear parts of the top surface of the horizontal rotating plate (21) are all formed with air guide holes (23); the bottom outer wall of the vertical air guide pipe (24) is clamped on the inner wall of the corresponding air guide hole (23) and fixed by welding; the top end of the vertical air guide pipe (24) is connected to a disc-shaped adsorption shell (30); an extension sleeve portion (31) extending upward is formed in the middle of the top plate of the disc-shaped adsorption shell (30); the middle part of the extension sleeve portion (31) is in communication with the disc-shaped adsorption shell (30); the top of the extension sleeve portion (31) is connected to a cylindrical shell portion (40); the inner cavity of the cylindrical shell portion (40) is in communication with the inner cavity of the disc-shaped adsorption shell (30); A plurality of upper air suction holes (32) are formed on the top plate of the disc-shaped adsorption shell (30), and the upper air suction holes (32) are in communication with the inner cavity of the disc-shaped adsorption shell (30); a plurality of side air suction holes (41) are formed on the outer wall of the cylindrical shell portion (40), and the side air suction holes (41) are in communication with the inner cavity of the cylindrical shell portion (40); The bottom end surface of the hub portion (101) of the wheel hub (100) to be processed is pressed against the top surface of the top plate of the disc-shaped adsorption shell (30) and is located above the corresponding upper air intake holes (32), the PCD holes on the hub portion (101) face the corresponding multiple upper air intake holes (32), the cylindrical shell portion (40) is inserted into the central hole in the middle of the hub portion (101), and the outer wall of the cylindrical shell portion (40) is close to the inner wall of the central hole.

2. A wheel hub powder spraying mobile structure with a powder suction device according to claim 1, characterized in that: The rotary servo motor (11) is fixed on the bottom surface of the top plate of the frame (10); the top end of the output shaft of the rotary servo motor (11) protrudes from the top surface of the top plate of the frame (10) and is fixed with a driving gear (12).

3. The mobile structure for wheel hub powder spraying with a powder suction device according to claim 1, characterized in that: An outer sleeve (25) is movably connected to the outer wall of the vertical air guide tube (24) via a plurality of bearings. A self-rotation drive motor (26) is fixed to the middle of the bottom surface of the horizontal rotating plate (21). The self-rotation drive motor (26) is inserted into a vertical through hole in the middle of the main shaft body (20). The top end of the output shaft of the self-rotation drive motor (26) extends out of the top surface of the horizontal rotating plate (21) and is fixed with a middle rotating gear (27). A self-rotation outer tooth portion (251) is formed or formed on the outer wall of the bottom of the outer sleeve (25). An intermediate transition gear (28) is provided between the self-rotation outer tooth portion (251) and the middle rotating gear (27). The middle of the intermediate transition gear (28) is fixed to the top surface of the horizontal rotating plate (21) via the bottom of the rotating shaft movably connected via a bearing. The self-rotation outer tooth portion (251) meshes with the corresponding intermediate transition gear (28), and the intermediate transition gear (28) meshes with the middle rotating gear (27).

4. A wheel hub powder spraying mobile structure with a powder suction device according to claim 3, characterized in that: An upper protective cover shell (29) is fixed to the top surface of the horizontal rotating plate (21), and the top of the rotating shaft of the intermediate transition gear (28) is fixed to the top plate of the upper protective cover body (29); The vertical air guide pipe (24) and the outer sleeve (25) are inserted into corresponding vertical through holes (291) on the top plate of the upper protective cover shell (29).

5. The mobile structure for wheel hub powder spraying with a powder suction device according to claim 4, characterized in that: The inner wall of the vertical through hole (291) is tightly attached to the outer wall of the wear-resistant self-lubricating sleeve (292), the top of the wear-resistant self-lubricating sleeve (292) extends out of the top of the vertical through hole (291), and a radial extension edge is formed on its outer wall, the bottom surface of the radial extension edge is pressed against the top surface of the top plate of the upper protective cover shell (29) and is fixedly connected to the top surface of the top plate of the upper protective cover shell (29) by multiple bolts, the outer sleeve (25) is inserted into the wear-resistant self-lubricating sleeve (292), and the outer wall of the outer sleeve (25) is close to the corresponding inner wall of the wear-resistant self-lubricating sleeve (292).

6. A wheel hub powder spraying mobile structure with a powder suction device according to claim 5, characterized in that: A circular support platform (251) is fixed on the top of the outer sleeve (25), the outer side wall of the circular support platform (251) is a conical wall surface, on which an elastic anti-slip sleeve (252) is fixed, and the outer side wall of the elastic anti-slip sleeve (252) is pressed against the conical inner side wall of the rim of the wheel hub (100); The top of the vertical air guide tube (24) extends out of the top of the middle through hole of the circular support platform (251) and the top surface of the circular support platform (251).

7. The mobile structure for wheel hub powder spraying with a powder suction device according to claim 1, characterized in that: A plug sleeve (33) extending downward is fixed to the middle of the bottom surface of the bottom plate of the disc-shaped adsorption shell (30); the plug sleeve (33) is connected to and aligned with the middle through hole of the bottom plate of the disc-shaped adsorption shell (30); the top of the vertical air guide tube (24) is clamped in the plug sleeve (33); the top outer wall of the vertical air guide tube (24) is pressed against the inner wall of the plug sleeve (33); a plurality of annular grooves are formed on the inner wall of the plug sleeve (33); a first sealing ring is nested in the annular groove; the inner wall of the first sealing ring is pressed against the outer wall of the vertical guide tube (24).

8. The mobile structure for wheel hub powder spraying with a powder suction device according to claim 1, characterized in that: An upper plug-in sleeve portion (42) extending downward is formed in the middle of the bottom surface of the bottom plate of the cylindrical shell portion (40); the upper plug-in sleeve portion (42) is communicated with a middle through hole of the bottom plate of the cylindrical shell portion (40); the upper plug-in sleeve portion (42) is clamped in the extension sleeve portion (31); the outer side wall of the upper plug-in sleeve portion (42) is pressed against the inner side wall of the extension sleeve portion (31); a plurality of outer annular grooves are formed on the inner side wall of the extension sleeve portion (31); the second sealing ring is nested in the outer annular groove; the inner side wall of the second sealing ring is pressed against the outer side wall of the upper plug-in sleeve portion (42).

9. The mobile structure for wheel hub powder spraying with a powder suction device according to claim 1, characterized in that: A self-lubricating wear-resistant top plate (1) is fixed to the bottom surface of the edge of the top plate of the disc-shaped adsorption shell (30), and a plurality of upper adsorption through holes (2) are formed on the self-lubricating wear-resistant top plate (1), and the upper adsorption through holes (2) are vertically aligned with and communicate with corresponding upper air suction through holes (32).

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