A heavy structure powder spraying hanger device

Abstract

The application discloses a heavy structural part powder spraying hanger device, relates to the field of spraying hangers, and solves the problem of low spraying efficiency caused by frequent manual disassembly and polishing due to the contact point conductivity attenuation of the traditional fixed hanger, and comprises a conveying table, a connecting rod, a device box and a hanging mechanism, wherein the hanging mechanism comprises a fixed ring, a rotating ring, an operating ring, a polishing piece, a conductive piece and a polishing part, the rotating ring and the operating ring are controlled to rotate through the hanging mechanism, the lifting ring and the structural part are hung below the device box as a whole, the conduction is completed through the close hanging of the conductive piece and the lifting ring, when the conductivity decreases, the operating ring is controlled to rotate, the polishing piece is used for polishing the surface of the lifting ring, meanwhile, the polishing part is controlled to assist in polishing and removing impurities on the surface of the conductive piece, then the position of the operating ring is switched to make the conductive piece and the lifting ring re-contact to complete the hanging conduction operation, and the efficiency of spraying and impurity removal is improved.

Description

Technical Field

[0001] This invention relates to the field of spray coating fixture technology, specifically to a powder coating fixture device for heavy structural components. Background Technology

[0002] Heavy metal structural components are widely used in engineering machinery, steel structure buildings, heavy equipment frames, and other fields. To meet the requirements of corrosion resistance, wear resistance, and aesthetic decoration, they are generally treated with electrostatic powder coating after forming. Electrostatic powder coating relies on the principle of electrostatic adsorption to achieve uniform powder adhesion. Good electrical conductivity between the workpiece and the fixture is the core prerequisite for ensuring coating quality and avoiding coating defects, and directly determines the coating uniformity, adhesion, and finished product yield.

[0003] Currently, the powder coating operations for heavy structural components in the industry mostly use fixed rigid hanger structures, which only have simple load-bearing and hanging functions. While suitable for the heavy weight and large volume of heavy workpieces, they exhibit many inherent defects in actual production. During continuous spraying, powder coating is highly susceptible to electrostatic adsorption, with trace amounts adhering to the contact points between the hanger and the heavy structural component. Simultaneously, residual oxide layers, rust, and hardened oil from pre-treatment of the workpiece also accumulate on the contact surfaces, affecting the electrical conductivity between the hanger and the structural component. Poor conductivity significantly weakens the electrostatic adsorption effect, leading to quality defects such as missed spraying, thin spraying, and coating peeling in the workpiece hanging area, greatly increasing rework and scrap rates. To solve the conductivity failure problem, the current production model relies on manual periodic disassembly of the hanger, manual grinding of the hanger contact surfaces and workpiece hanging points, and cleaning before resuming operation. This process is difficult to disassemble and reposition, has limited space for manual grinding, and is time-consuming, significantly reducing overall spraying production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a heavy-duty structural component powder coating fixture device that facilitates continuous and stable electrical conductivity without downtime or disassembly, thereby improving the efficiency of continuous spraying operations and the consistency of coating quality, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a powder coating fixture for heavy structural components, comprising a conveyor table and a hanging mechanism. A connecting rod is rotatably connected to the bottom of the conveyor table, and multiple device boxes are fixedly connected to the bottom of the connecting rod. The hanging mechanism includes a fixed ring fixedly mounted on the device box, a rotating ring rotatably connected inside the fixed ring, and an operating ring rotatably connected coaxially to the inner wall of the rotating ring. The inner wall of the operating ring is provided with a grinding disc for grinding the surface of the hanging ring, and a conductive sheet for conductive contact with the surface of the hanging ring. The device box contains a device for assisting in the grinding of the heavy structural components. The device includes a grinding component for auxiliary grinding of the conductive sheet surface. The hanging mechanism can control the rotation of the rotating ring and the operating ring, so that the lifting ring and the structural component are suspended as a whole below the device box. At the same time, when the conductivity decreases, the operating ring can be controlled to rotate, so that the grinding disc grinds the surface of the lifting ring. Simultaneously, the grinding component is controlled to assist in grinding and removing impurities from the surface of the conductive sheet. Then, by switching the position of the operating ring, the conductive sheet and the lifting ring are brought back into contact to complete the suspension and conductivity operation. This facilitates continuous and stable conductivity without stopping or disassembling, improving the efficiency of continuous spraying operations and the consistency of coating quality.

[0006] Preferably, the hanging mechanism further includes a rotating component installed on the fixed ring and the rotating ring for driving the rotating ring and the operating ring to rotate respectively. The bottom of the fixed ring has a first opening, the side of the rotating ring has a second opening, and the side of the operating ring has a third opening. The conveying platform is provided with an adjusting component for adjusting the deflection angle of the connecting rod, which facilitates the hanging and rotation of the structural component.

[0007] Preferably, the polishing component includes a fixed box fixedly installed inside the device box. The fixed box has a transmission belt that can slide against the inner wall of the fixed box. The two sides of the transmission belt are limited and guided by the inner wall of the fixed box, thereby ensuring that the outer wall of the transmission belt always slides against the inner wall of the fixed box. The transmission belt contains a polishing belt. The fixed box has a disassembly and assembly component for assisting in improving the disassembly and assembly efficiency of the polishing belt. The fixed box has a driving component for driving the transmission belt while assisting in sucking and storing dust, which facilitates auxiliary polishing of the surface of the conductive sheet.

[0008] Preferably, the disassembly and assembly components include multiple sets of snap-fit ​​blocks evenly fixedly installed on the inner wall of the transmission belt, and multiple sets of snap-fit ​​grooves evenly opened on the outer wall of the grinding belt that can be inserted into the snap-fit ​​blocks. A guide wheel is rotatably connected inside the fixing box. The inner wall of the grinding belt can simultaneously slide and fit against the outer wall of the operating ring and the guide wheel. A baffle is coaxially provided at one end of the guide wheel. The baffle is fixedly connected to the guide wheel by bolts, which facilitates the improvement of the disassembly and assembly efficiency of the grinding belt.

[0009] Preferably, the driving component includes a drive motor fixedly installed inside the device box, a first gear coaxially fixedly connected to the output end of the drive motor, multiple sets of first tooth grooves uniformly formed on the outer wall of the transmission belt that can mesh with the first gear for transmission, an impeller coaxially fixedly connected to the side of the guide wheel away from the baffle, a collection box fixedly connected inside the device box, a connecting pipe fixedly connected to the collection box, one end of the connecting pipe being sleeved on the outer wall of the impeller and fixedly connected to the fixed box, and multiple sets of suction grooves uniformly formed inside the guide wheel that communicate with one end of the connecting pipe, facilitating the operation of the transmission belt while assisting in the suction and storage of dust.

[0010] Preferably, the rotating component includes a second gear mounted on both sides of the upper end of the fixed ring. The outer wall of the rotating ring is evenly provided with multiple sets of second tooth grooves that can mesh with the second gears for transmission. The rotating ring is provided with two third gears, which are respectively located on both sides of the second opening. The outer wall of the operating ring is evenly provided with multiple sets of third tooth grooves that can mesh with the third gears for transmission, so as to facilitate driving the rotating ring and the operating ring to rotate respectively.

[0011] Preferably, the adjusting component includes a rotating buckle fixedly installed at the upper middle position of the connecting rod. The rotating buckle is rotatably connected to the conveyor table. A worm gear is rotatably connected inside the conveyor table. A worm wheel that meshes with the worm gear is coaxially fixedly connected to the rotating buckle, which facilitates the adjustment of the deflection angle of the connecting rod.

[0012] Preferably, the side of the fixing box is provided with two sets of sliding grooves, and a magnetic block is slidably connected in the sliding groove. The magnetic block can be magnetically attracted to the inner walls of the two sides of the sliding groove respectively. A baffle for blocking and limiting the side wall of the grinding belt is fixedly connected to the magnetic block, which facilitates blocking and limiting the side wall of the grinding belt.

[0013] Preferably, the fixing ring has a threaded groove, and the device box is threaded with a threaded rod that can be threadedly connected to the threaded groove, which facilitates auxiliary pulling of the fixing ring and improves the stability of the suspension.

[0014] Preferably, the fixed ring, the rotating ring, and the conveying table are each provided with a drive structure for driving the second gear, the third gear, and the worm gear to rotate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention provides a powder coating fixture for heavy-duty structural components, solving the problem of low coating efficiency caused by frequent manual disassembly and grinding due to the decay of conductivity at contact points in traditional fixed fixtures. The device controls the rotation of a rotating ring and an operating ring via a suspension mechanism, allowing the ring and structural component to be suspended as a whole below the device box. Conductivity is achieved through the contact between a conductive sheet and the ring. When conductivity decreases, the operating ring is rotated, causing a grinding disc to grind the surface of the ring. Simultaneously, a grinding component assists in grinding and removing impurities from the surface of the conductive sheet. Afterwards, the position of the operating ring is switched to re-establish contact between the conductive sheet and the ring, completing the suspension and conductivity operation, thus improving the efficiency of coating and impurity removal. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 This is a partial structural diagram of the adjusting component of the present invention; Figure 4 This is a partial structural diagram of the suspension mechanism of the present invention; Figure 5 for Figure 4 Enlarged view of region B in the middle; Figure 6 This is a partial structural exploded view of the suspension mechanism of the present invention; Figure 7 for Figure 6 Enlarged view of region C; Figure 8 This is a partial sectional view of the grinding component of the present invention; Figure 9 for Figure 8 Enlarged view of region D in the middle; Figure 10 This is a partial structural exploded view of the grinding part of the present invention; Figure 11 for Figure 10 Enlarged view of region E in the middle.

[0017] In the diagram: 1-Conveying table; 2-Connecting rod; 3-Device box; 4-Fixing ring; 5-Rotating ring; 6-Operating ring; 7-Grinding disc; 8-Conductive sheet; 9-First opening; 10-Second opening; 11-Third opening; 12-Fixing box; 13-Transmission belt; 14-Grinding belt; 15-Snap-fit ​​block; 16-Snap-fit ​​groove; 17-Guide wheel; 18-Baffle plate; 19-Drive motor; 20-First gear; 21-First tooth groove; 22-Impeller; 23-Collection box; 24-Connecting pipe; 25-Suction groove; 26-Second gear; 27-Second tooth groove; 28-Third gear; 29-Third tooth groove; 30-Rotating buckle; 31-Worm; 32-Worm wheel; 33-Sliding groove; 34-Magnetic block; 35-Baffle; 36-Threaded groove; 37-Threaded rod; 38-Lifting ring; 39-Structural component. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-9 This invention provides a technical solution: a powder coating fixture for heavy structural components, comprising a conveyor table 1 and a hanging mechanism. A connecting rod 2 is rotatably connected to the bottom of the conveyor table 1, and multiple sets of device boxes 3 are fixedly connected to the bottom of the connecting rod 2. The hanging mechanism includes a fixing ring 4 fixedly mounted on the device box 3, a rotating ring 5 rotatably connected inside the fixing ring 4, and an operating ring 6 coaxially rotatably connected to the inner wall of the rotating ring 5. The inner wall of the operating ring 6 is provided with a polishing disc 7 for polishing the surface of the hanging ring 38, and the inner wall of the operating ring 6 is provided with a conductive contact surface for contact with the hanging ring 38. The conductive sheet 8 is housed in the device box 3, which is equipped with a polishing component to assist in polishing the surface of the conductive sheet 8. The hanging mechanism can be controlled to rotate the rotating ring 5 and the operating ring 6, so that the hanging ring 38 and the structural component 39 are hung together below the device box 3. At the same time, when the conductivity decreases, the operating ring 6 can be controlled to rotate, so that the polishing disc 7 polishes the surface of the hanging ring 38. Simultaneously, the polishing component is controlled to assist in polishing and removing impurities from the surface of the conductive sheet 8. Afterwards, the position of the operating ring 6 is switched so that the conductive sheet 8 and the hanging ring 38 are re-in contacted to complete the suspension and conductivity operation.

[0020] Please see Figures 3-9The hanging mechanism shown in the figure also includes rotating components mounted on the fixed ring 4 and the rotating ring 5 to drive the rotating ring 5 and the operating ring 6 to rotate respectively. The bottom of the fixed ring 4 has a first opening 9, the side of the rotating ring 5 has a second opening 10, and the side of the operating ring 6 has a third opening 11. The conveyor table 1 is provided with an adjusting component for adjusting the deflection angle of the connecting rod 2. The rotating component includes second gears 26 mounted on both sides of the upper end of the fixed ring 4. The outer wall of the rotating ring 5 is evenly provided with multiple sets of second tooth grooves 27 that can mesh with the second gears 26 for transmission. The rotating ring 5 is provided with two third gears 2. 8. Two third gears 28 are located on both sides of the second opening 10. The outer wall of the operating ring 6 is evenly provided with multiple sets of third tooth grooves 29 that can mesh with the third gears 28 for transmission. The adjusting component includes a rotating buckle 30 fixedly installed at the upper end of the middle part of the connecting rod 2. The rotating buckle 30 is rotatably connected to the conveyor table 1. A worm gear 31 is rotatably connected inside the conveyor table 1. A worm wheel 32 that meshes with the worm gear 31 is coaxially fixedly connected to the rotating buckle 30. The fixed ring 4, the rotating ring 5 and the conveyor table 1 are all provided with drive structures for driving the second gear 26, the third gear 28 and the worm gear 31 to rotate.

[0021] Please see Figures 4-11 The grinding component shown in the diagram includes a fixed box 12 fixedly installed inside the device box 3. The fixed box 12 contains a transmission belt 13 that slides against the inner wall of the fixed box 12. The two sides of the transmission belt 13 are limited and guided by the inner wall of the fixed box 12, ensuring that the outer wall of the transmission belt 13 always slides against the inner wall of the fixed box 12. A grinding belt 14 is installed inside the transmission belt 13. The fixed box 12 is equipped with disassembly and assembly components to assist in improving the efficiency of disassembly and assembly of the grinding belt 14. The fixed box 12 is also equipped with a driving component that drives the transmission belt 13 while simultaneously assisting in the suction and storage of dust. The driving component includes components fixedly installed inside the device box 3. The drive motor 19, preferably an LD60 micro motor, has a first gear 20 coaxially fixedly connected to its output end. The outer wall of the transmission belt 13 is evenly provided with multiple sets of first tooth grooves 21 that can mesh with the first gear 20. The guide wheel 17 is coaxially fixedly connected to an impeller 22 on the side away from the baffle 18. A collection box 23 is fixedly connected inside the device box 3. A connecting pipe 24 is fixedly connected to the collection box 23. One end of the connecting pipe 24 is sleeved on the outer wall of the impeller 22 and fixedly connected to the fixed box 12. Multiple suction grooves 25 are evenly provided inside the guide wheel 17 and communicate with one end of the connecting pipe 24.

[0022] Please see Figures 4-11The assembly and disassembly components shown in the figure include multiple sets of snap-fit ​​blocks 15 evenly fixedly installed on the inner wall of the transmission belt 13. Multiple sets of snap-fit ​​grooves 16 that can be inserted into the snap-fit ​​blocks 15 are evenly opened on the outer wall of the grinding belt 14. A guide wheel 17 is rotatably connected inside the fixing box 12. The inner wall of the grinding belt 14 can slide and fit against the outer wall of the operating ring 6 and the guide wheel 17 at the same time. A baffle 18 is coaxially provided at one end of the guide wheel 17. The baffle 18 is fixedly connected to the guide wheel 17 by bolts. Two sets of sliding grooves 33 are opened on the side of the fixing box 12. A magnetic block 34 is slidably connected in the sliding groove 33. The magnetic block 34 can magnetically attract the inner walls of the two sides of the sliding groove 33 respectively. A baffle 35 for blocking and limiting the side wall of the grinding belt 14 is fixedly connected on the magnetic block 34. A threaded groove 36 is opened on the fixing ring 4. A threaded rod 37 that can be threadedly connected to the threaded groove 36 is threadedly connected to the device box 3.

[0023] Working principle: By controlling the rotation of the second gear 26, the second tooth groove 27 is driven to rotate the rotating ring 5, rotating the second opening 10 to its lowest position and connecting it with the first opening 9. At the same time, the rotation of the third gear 28 is controlled to drive the third tooth groove 29 to rotate the operating ring 6, rotating the third opening 11 to its lowest position and connecting it with the second opening 10. At this time, the lifting ring 38 above the structural component 39 can be inserted into the operating ring 6 through the first opening 9, the second opening 10, and the third opening 11. At the same time, the grinding belt 14 to be installed can be inserted into the fixed ring 4 and the operating ring 6 through the opening below. Unscrew the threaded rod 37 to disconnect the threaded rod 37 from the threaded groove 36, and move the magnet to both sides. The suction block 34 allows the baffle 35 to slide along the sliding groove 33 on both sides. Then, the bolts are unscrewed to release the obstruction of the baffle 18 on the side of the guide wheel 17, allowing the grinding belt 14 to slide into the outer wall of the operating ring 6 and the guide wheel 17. At the same time, the snap-fit ​​groove 16 is aligned with the snap-fit ​​block 15, and the grinding belt 14 is pushed in. Then, the baffle 18 is fixed with bolts, and the baffle 35 is closed in the middle, so that the magnetic suction block 34 and the sliding groove 33 on one side are magnetically attracted and limited. Then, the threaded rod 37 is screwed down, so that the threaded rod 37 and the threaded groove 36 are threadedly connected, which helps to pull up the opening position on this side of the device box 3, and avoids the device box 3 and the fixing ring 4 from being tilted or even broken due to uneven force during the hanging process.

[0024] Controlling the rotation of the second gear 26 and the third gear 28 drives the rotation ring 5 and the operating ring 6 to rotate, causing the second opening 10 to rotate to the top position and the third opening 11 to rotate to the side position. At this time, the conductive sheet 8 rotates to the bottom and the grinding sheet 7 rotates to the top. The conveyor table 1 drives the entire device to lift and slide horizontally. The worm gear 31 drives the worm wheel 32 to rotate, so that the rotating buckle 30 and the connecting rod 2 rotate around the conveyor table 1. This allows the device box 3 and the operating ring 6 to drive the lower structural component 39 to rotate, changing the spraying angle and direction, making the spraying more uniform and efficient. At the same time, the conveyor table 1 can complete the lifting and horizontal transport functions of the structural component 39. The bottom of the lifting ring 38 achieves the conductive function by being tightly attached to the conductive sheet 8.

[0025] During the spraying process, electrostatic adsorption occurs on the surfaces of the lifting ring 38 and the conductive sheet 8. Some powder diffuses and adheres to the connection point between the lifting ring 38 and the conductive sheet 8, affecting the conductive wire at the connection and reducing the efficiency of powder spraying. At this point, it is necessary to control the third gear 28 to drive the operating ring 6 to rotate 180° in the opposite direction, so that the third opening 11 rotates from above, preventing the lifting ring 38 from slipping into the third opening 11. This completes the switching of the positions of the conductive sheet 8 and the grinding disc 7. Afterward, the third gear 28 is controlled to drive the operating ring 6 to make a small reciprocating deflection, so that the grinding disc 7 reciprocates and rubs the bottom of the lifting ring 38 to remove the powder coating adsorbed on the bottom of the lifting ring 38. At the same time, the drive motor 19 drives the first gear 20 to rotate, and the first gear 20 drives the first tooth groove 2. 1. The transmission belt 13 runs, and during the transmission process of the transmission belt 13 against the inner wall of the fixed box 12, it drives the grinding belt 14 to drive synchronously. The inner wall of the grinding belt 14 grinds the outer wall of the conductive sheet 8. With the small reciprocating deflection of the operating ring 6, the powder coating on the outer wall of the conductive sheet 8 can be fully ground and removed. At the same time, the operation of the grinding belt 14 will also drive the guide wheel 17 to rotate at high speed. The guide wheel 17 drives the impeller 22 to rotate, and the dust is drawn through the suction groove 25 to the connecting pipe 24 and finally transported to the collection box 23 for storage. The gas is discharged to the outside after being filtered by the filter screen in the collection box 23. The suction groove 25 on the outer wall of the guide wheel 17 can also help remove powder impurities on the surface of the grinding belt 14, producing a self-cleaning effect.

[0026] After grinding is completed, turn off the drive motor 19, and then control the third gear 28 to drive the operating ring 6 to rotate 180°, switching the positions of the conductive sheet 8 and the grinding disc 7 so that the upper side of the conductive sheet 8 and the bottom surface of the lifting ring 38 are in contact and connected again. Then, the powder coating operation can continue. After the operation is completed, control the second gear 26 and the third gear 28 to drive the rotating ring 5 and the operating ring 6 to rotate, rotating the second opening 10 and the third opening 11 to the bottom end to connect with the first opening 9. The lifting ring 38 can then be detached from the bottom, completing the operation. The device box 3 can be set to a structure that can slide and limit along the connecting rod 2 to flexibly adjust the spacing of adjacent operating rings 6, so as to adapt to the hanging rings 38 with different spacings for hanging use. This device can improve the efficiency of disassembly and replacement of the grinding belt 14 while facilitating hanging and grinding to remove impurities, making it convenient to use.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder coating fixture for heavy structural components, characterized in that, include: A conveyor platform (1) is rotatably connected to the bottom of the conveyor platform (1), and a number of device boxes (3) are fixedly connected to the bottom of the connecting rod (2). Also includes: The hanging mechanism includes a fixed ring (4) fixedly installed on the device box (3), a rotating ring (5) rotatably connected inside the fixed ring (4), an operating ring (6) rotatably connected to the inner wall of the rotating ring (5), a grinding disc (7) for grinding the surface of the hanging ring on the inner wall of the operating ring (6), and a conductive sheet (8) for contacting and conducting electricity with the surface of the hanging ring on the inner wall of the operating ring (6). The device box (3) is provided with a grinding disc (7) that can assist in grinding the surface of the conductive sheet (8). The grinding component, the hanging mechanism can control the rotation of the rotating ring (5) and the operating ring (6) to make the ring and the structural component hang together below the device box (3). At the same time, when the conductivity is reduced, the operating ring (6) can be controlled to rotate so that the grinding disc (7) grinds the surface of the ring. At the same time, the grinding component is controlled to assist in grinding and removing impurities from the surface of the conductive sheet (8). Then, by switching the position of the operating ring (6), the conductive sheet (8) and the ring are brought back into contact to complete the suspension conductivity operation.

2. The powder coating fixture device for heavy structural components according to claim 1, characterized in that: The hanging mechanism also includes a rotating component installed on the fixed ring (4) and the rotating ring (5) for driving the rotating ring (5) and the operating ring (6) to rotate respectively. The bottom of the fixed ring (4) is provided with a first opening (9), the side of the rotating ring (5) is provided with a second opening (10), and the side of the operating ring (6) is provided with a third opening (11). The conveying table (1) is provided with an adjusting component for adjusting the deflection angle of the connecting rod (2).

3. The powder coating fixture device for heavy structural components according to claim 2, characterized in that: The grinding component includes a fixed box (12) fixedly installed inside the device box (3). The fixed box (12) is provided with a transmission belt (13) that can slide against the inner wall of the fixed box (12). The transmission belt (13) is provided with a grinding belt (14). The fixed box (12) is provided with a disassembly and assembly component for assisting in improving the disassembly and assembly efficiency of the grinding belt (14). The fixed box (12) is provided with a drive component for driving the transmission belt (13) to run while assisting in the suction and storage of dust.

4. The powder coating fixture device for heavy structural components according to claim 3, characterized in that: The assembly and disassembly components include multiple sets of snap-fit ​​blocks (15) evenly fixedly installed on the inner wall of the transmission belt (13). The outer wall of the grinding belt (14) is evenly provided with multiple sets of snap-fit ​​grooves (16) that can be inserted into the snap-fit ​​blocks (15). The guide wheel (17) is rotatably connected inside the fixing box (12). The inner wall of the grinding belt (14) can slide and fit against the outer wall of the operating ring (6) and the guide wheel (17) at the same time. One end of the guide wheel (17) is coaxially provided with a baffle (18). The baffle (18) is fixedly connected to the guide wheel (17) by bolts.

5. A powder coating fixture device for heavy structural components according to claim 4, characterized in that: The driving component includes a drive motor (19) fixedly installed in the device box (3). The output end of the drive motor (19) is coaxially fixedly connected to a first gear (20). The outer wall of the transmission belt (13) is evenly provided with multiple sets of first tooth grooves (21) that can mesh with the first gear (20) for transmission. The guide wheel (17) is coaxially fixedly connected to an impeller (22) on the side away from the baffle (18). The device box (3) is fixedly connected to a collection box (23). The collection box (23) is fixedly connected to a connecting pipe (24). One end of the connecting pipe (24) is sleeved on the outer wall of the impeller (22) and fixedly connected to the fixed box (12). The guide wheel (17) is evenly provided with multiple sets of suction grooves (25) that communicate with one end of the connecting pipe (24).

6. The powder coating fixture device for heavy structural components according to claim 2, characterized in that: The rotating component includes a second gear (26) installed on both sides of the upper end of the fixed ring (4). The outer wall of the rotating ring (5) is evenly provided with multiple sets of second tooth grooves (27) that can mesh with the second gear (26) for transmission. The rotating ring (5) is provided with two third gears (28), which are located on both sides of the second opening (10). The outer wall of the operating ring (6) is evenly provided with multiple sets of third tooth grooves (29) that can mesh with the third gears (28) for transmission.

7. A powder coating fixture for heavy structural components according to claim 6, characterized in that: The adjusting component includes a rotating buckle (30) fixedly installed at the upper middle position of the connecting rod (2). The rotating buckle (30) is rotatably connected to the conveyor table (1). A worm gear (31) is rotatably connected inside the conveyor table (1). A worm wheel (32) that meshes with the worm gear (31) is coaxially fixedly connected to the rotating buckle (30).

8. A powder coating fixture device for heavy structural components according to claim 3, characterized in that: The fixed box (12) has two sets of sliding grooves (33) on its side. A magnetic block (34) is slidably connected in the sliding groove (33). The magnetic block (34) can magnetically attract the inner walls of the two sides of the sliding groove (33) respectively. A baffle (35) for blocking and limiting the side wall of the grinding belt (14) is fixedly connected to the magnetic block (34).

9. A powder coating fixture for heavy structural components according to claim 1, characterized in that: The fixed ring (4) has a threaded groove (36), and the device box (3) is threaded with a threaded rod (37) that can be threadedly connected to the threaded groove (36).

10. A powder coating fixture for heavy structural components according to claim 7, characterized in that: The fixed ring (4), the rotating ring (5) and the conveying table (1) are each provided with a drive structure for driving the second gear (26), the third gear (28) and the worm (31) to rotate.

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