Plate paint spraying equipment and paint spraying method

Abstract

The invention relates to plate paint spraying equipment and a paint spraying method, and relates to the technical field of plate paint spraying, the plate paint spraying equipment comprises a frame body, an outer ring, an inner ring, an annular mounting frame, a sliding driving part, sprayers and a rotary driving assembly, and when the inner ring and the outer ring rotate, the multiple sets of sprayers conduct rotary paint spraying on multiple sets of curved plates sliding along with the mounting frame; each energy-saving mechanism comprises a sealing assembly used for blocking the corresponding spray head; and when the spray head is blocked, the pressure stabilizing assembly is started, and redundant paint in the feeding assembly is discharged. According to the paint spraying device, when the inner ring and the outer ring rotate, the multiple sets of spray heads conduct rotary paint spraying on the multiple sets of curved plates sliding along with the mounting frame, when the spray heads enter the space between the curved plates, the sealing assembly blocks the spray heads, and the sealing assembly opens the pressure stabilizing assembly, so that redundant paint in the feeding assembly is discharged; and the stability of the pressure value when the nozzle is restarted is ensured, and the paint spraying effect on the curved plate is improved.

Description

Technical Field

[0001] This application relates to the technical field of panel painting, and in particular to a panel painting equipment and painting method. Background Technology

[0002] In the production of boxes and cabinets, painting the sheet metal or frame is a common process. For mass production of sheet metal, hanging painting equipment is usually used. Specifically, the parts are vertically hung on a conveyor track and conveyed through the painting equipment. The painting equipment has vertically evenly arranged spray nozzles on both sides, so that multiple nozzles can simultaneously paint both sides of the moving parts.

[0003] Because mass-produced boards may include curved panels, in order to achieve a good painting effect on the curved surface of the panels, multiple sets of spray nozzles need to be installed on a mounting frame with the same curvature as the curved panel to paint the curved surface of the panel.

[0004] However, in the aforementioned painting equipment, since the nozzles are all in fixed positions, multiple rows of nozzles are usually installed to ensure sufficient paint coverage on the parts. Therefore, existing painting equipment requires a large number of nozzles. During the movement and painting process, the smaller the paintable area of ​​the part, the more nozzles waste paint, resulting in greater paint waste. Furthermore, a large number of nozzles also creates difficulties for inspection and maintenance. In addition, existing painting devices also suffer from poor atomization particle activity within the spray chamber, and the paint application rate needs to be improved. Summary of the Invention

[0005] To improve the painting effect on curved panels, this application provides a panel painting equipment and painting method.

[0006] This application provides a panel painting equipment, which adopts the following technical solution: A panel painting device includes a frame with an outer ring and an inner ring rotatably mounted on it. The inner ring is located inside the outer ring and coaxially arranged. An annular mounting bracket for mounting multiple sets of curved panels is slidably mounted on the frame, coaxially arranged between the inner and outer rings. A sliding drive component is provided on the frame to drive the mounting bracket to slide along the axial direction. Multiple sets of spray nozzles for painting the curved panels are spaced apart on the outer and inner rings. A rotary drive assembly is provided on the frame to drive the outer and inner rings to rotate. A feeding assembly is provided on the frame to supply paint to the multiple sets of spray nozzles. When the inner and outer rings rotate, the multiple sets of spray nozzles perform rotary painting on the multiple sets of curved panels that slide with the mounting bracket. The feeding assembly is provided with multiple energy-saving mechanisms to reduce paint waste when the spray nozzles move between adjacent curved panels. The energy-saving mechanisms include: A sealing assembly, which is disposed on the feeding assembly, seals the nozzle; A pressure stabilizing component is installed on the feeding component. When the sealing component blocks the nozzle, the pressure stabilizing component is activated and excess paint in the feeding component is discharged.

[0007] By adopting the above technical solution, multiple sets of curved panel circumferential arrays are installed on the mounting frame. The sliding drive component drives the mounting frame to slide, while the rotation drive component drives the outer and inner rings to rotate. Multiple sets of nozzles spray the paint in the feeding component onto the curved panel. When the nozzle enters between the curved panels, the sealing component seals the nozzle, reducing paint waste. At the same time, the sealing component activates the pressure stabilizing component to discharge excess paint from the feeding component, thereby ensuring the stability of its internal pressure value. This ensures the stability of the pressure value when the nozzle restarts, improving the painting effect on the curved panel.

[0008] Furthermore, the voltage regulator component includes: The recycling blocks are symmetrically arranged on the feeding assembly. A return groove is opened on the opposite side of the two sets of recycling blocks. A return cavity communicating with the outside is opened in the recycling block. A return hole communicating with the return cavity and the return groove is opened on the side wall of the return groove. A sealing block is slidably disposed in the return groove. When the sealing block slides to the bottom of the return groove, the paint in the feeding assembly can flow into the return hole through the gap between the sealing block and the return groove. A reset component is provided at the bottom of the reflux trough. The reset component is used to push the sealing block away from the bottom of the reflux trough. After the sealing block is reset, it seals the reflux hole.

[0009] By adopting the above technical solution, when the sealing component blocks the nozzle, the sealing block slides to the bottom of the return groove, allowing the paint in the supply component to flow into the return hole through the gap between the sealing block and the return groove, and finally be discharged through the return cavity. This achieves the discharge of excess paint in the supply component when the nozzle is blocked, thereby ensuring the stability of the pressure value in the supply component. At the same time, when the sealing component releases the seal on the nozzle, the reset component pushes the sealing block to reset and seals the return hole, ensuring the stability of the pressure value at the nozzle.

[0010] Furthermore, the sealing assembly includes: A blocking block is disposed on the feeding assembly and located at the bottom of the two sets of recycling blocks; An extension member is provided on the nozzle and is used to extend the length of the nozzle feed end. The extension member slides and abuts against the sealing block to seal the nozzle inlet end. The extension member presses against the two sets of sealing blocks on opposite side walls and opens the return hole.

[0011] By adopting the above technical solution, the extension piece slides and abuts against the sealing block, thereby sealing the nozzle. At the same time, the extension piece presses against the two sets of sealing blocks on the opposite side walls, thereby opening the return hole. In the end, the nozzle is sealed while the return hole is opened, thus ensuring the stability of the pressure value in the feeding assembly.

[0012] Furthermore, the extension includes: The tube body is sleeved on the feed end of the nozzle and located inside the feeding assembly. The tube body is used to extend the length of the feed end of the nozzle and slide and seal against the sealing block. The clamping sleeve is rotatably disposed outside the tube body. The clamping sleeve is used to press against the sealing block and push the sealing block to slide towards the bottom of the return groove. The clamping sleeve rolls against the two sets of sealing blocks.

[0013] By adopting the above technical solution, the tube body and the sealing block slide and seal against each other, which facilitates the sealing of the nozzle feed end. When the tube body slides on the sealing block, the clamping sleeve pushes the two sets of sealing blocks against the bottom of the return groove, thereby opening the return hole. The clamping sleeve and the two sets of sealing blocks roll against each other, thereby reducing the probability of wear between the clamping sleeve and the sealing blocks.

[0014] Furthermore, the tube body can be slidably disposed on the feed end of the nozzle along the axis of the nozzle, and the nozzle is provided with a buffer assembly to improve the sealing performance between the tube body and the sealing block, the buffer assembly comprising: A buffer spring is sleeved on the nozzle and used to push the tube body to slide closer to the sealing block. The sealing block has a guide surface on its end face to facilitate pushing the tube body closer to the buffer spring. A limiting ring is fitted onto the nozzle and limits the maximum distance the pipe body can slide towards the sealing block.

[0015] By adopting the above technical solution, the buffer spring pushes the tube body to press against the sealing block, ensuring the sealing effect between the tube body and the sealing block. At the same time, the limiting ring is used to limit the maximum sliding distance of the tube body, thereby reducing the probability of the tube body sliding out of the nozzle and facilitating the guide surface to guide the tube body.

[0016] Furthermore, the frame is equipped with a blower assembly for blowing air onto the painted curved panel, the blower assembly comprising: An air supply box is mounted on the feeding assembly and is used to provide high-pressure airflow. The air supply box is rotatably connected to the outer ring or the inner ring. The air nozzles, in multiple sets, are spaced apart on the outer and inner rings and are used to blow out the high-pressure airflow from the air supply box. The air nozzles are used to blow air onto the painted curved panel.

[0017] By adopting the above technical solution, multiple sets of air nozzles rotate with the outer or inner ring to discharge the high-pressure gas in the air supply box, so that the atomized particles in the air move towards the curved panel under the blowing of the air nozzles, thereby improving the paint application rate.

[0018] Furthermore, the number of air nozzles is the same as the number of spray heads, the rotation center of the air nozzles is spaced apart from the rotation center of the spray heads, the air nozzles and spray heads are staggered, the air blowing trajectory of the air nozzles on the curved panel coincides with the path of the spray heads spraying paint on the curved panel, and the air nozzles are used to delay blowing on the curved panel after the spray heads have sprayed paint.

[0019] By adopting the above technical solution, when the rotary drive component drives the outer and inner rings to rotate, the nozzles perform spiral spraying on the curved panel as the mounting bracket slides. With the rotation of the outer and inner rings and the sliding of the mounting bracket, the air nozzles blow air onto the curved panel after a certain delay, coinciding with the movement trajectory of the previous set of nozzles. This causes the atomized particles sprayed into the air by the previous set of nozzles to move towards the curved panel under the blowing of the air nozzles, thereby improving the paint application rate.

[0020] Furthermore, the rotation drive assembly includes: The first drive motor is mounted on the frame. A first transmission component is mounted on the frame and connected to the outer ring. The first drive motor drives the outer ring to rotate through the first transmission component. The second drive motor is mounted on the frame. The second transmission component is mounted on the frame and connected to the inner ring. The second drive motor drives the inner ring to rotate through the second transmission component.

[0021] By adopting the above technical solution, the first drive motor starts and drives the outer ring to rotate through the first transmission component, thereby performing rotary painting on the outer side of the curved panel. The second drive motor starts and drives the inner ring to rotate through the second transmission component, thereby performing rotary painting on the inner side of the curved panel.

[0022] Furthermore, a mounting groove is provided on the side wall of the curved panel near the mounting bracket, and the mounting bracket is provided with multiple sets of locking components for locking the curved panel, the locking components including: A locking block is slidably disposed on the mounting bracket and engages with the mounting slot. After the locking block is inserted into the mounting slot, it locks the curved panel onto the mounting bracket. A locking bolt, the locking bolt being threaded on the mounting bracket and rotatably connected to the locking block, the locking bolt pushing the locking block to slide when rotated.

[0023] By adopting the above technical solution, the curved panel is placed at the designated position of the mounting bracket, and then the locking bolt is rotated to drive the locking block to slide towards the mounting groove and finally lock it in the mounting groove. Multiple sets of locking components are used to lock the curved panel in at least two directions, thereby locking the curved panel on the mounting bracket.

[0024] In summary, this application includes at least one of the following beneficial technical effects: By mounting multiple sets of curved panels in a circular array on a mounting frame, a third drive motor drives the mounting frame to slide via a lead screw. Simultaneously, the first and second drive motors rotate the outer and inner rings. Multiple nozzles spray paint from the first and second feed boxes onto the curved panels. At the same time, air nozzles provide delayed airflow to the painted curved panels, improving the paint uptake rate. When the nozzles enter between curved panels, sealing blocks block the nozzles, reducing paint waste. Simultaneously, a retaining sleeve opens the return hole, discharging excess paint from the first and second feed boxes. This ensures stable internal pressure values, guaranteeing pressure stability when the nozzles restart and improving the painting effect on the curved panels.

[0025] This application provides a painting method for a sheet metal spraying equipment, which adopts the following technical solution: A panel painting equipment and method, comprising the following steps: S1. Curved panel installation: Set multiple sets of curved panels on the mounting bracket; S2. Mounting bracket movement: After multiple curved panels are installed, the sliding drive unit drives the mounting bracket containing the curved panels to slide. S3. Spray painting the curved panel: Start the rotary drive component to drive the outer and inner rings to rotate. Spray paint the two opposite sides of the curved panel on the mounting bracket through multiple sets of nozzles. Through the sliding of the mounting bracket, the multiple sets of curved panels are finally sprayed in a spiral. The air blowing path of the nozzle to the curved panel and the spraying path of the nozzle overlap and are delayed for a certain period of time. S4. Removal of the curved panel: After the mounting bracket is moved into place, the curved panel will be removed by the locking component, and the sliding drive will reset the mounting bracket.

[0026] By adopting the above technical solution, the first drive motor drives the outer ring to rotate, and the second drive motor drives the inner ring to rotate. Multiple sets of nozzles on the outer and inner rings perform rotary painting on the opposite sides of the curved panel on the mounting bracket. Multiple sets of air nozzles perform rotary air blowing on the curved panel. At the same time, the third drive motor drives the mounting bracket to slide, so that multiple sets of nozzles perform spiral painting on the opposite sides of multiple sets of curved panels. At the same time, multiple sets of air nozzles delay the air blowing on the painting path of the nozzles on the curved panel, thereby improving the painting effect on the curved panel. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the sheet metal spraying equipment of this application; Figure 2 This is a schematic diagram of the sheet metal spraying equipment of this application, which mainly shows the structure of the rotary drive component; Figure 3 This is a schematic diagram of the inner ring structure of this application; Figure 4 yes Figure 2 A cross-sectional schematic diagram of AA in the middle; Figure 5 yes Figure 4 Cross-sectional schematic diagram of BB; Figure 6 This is a schematic diagram of the mounting bracket and frame structure of this application, showing the state after the curved panel is installed; Figure 7 This is a schematic diagram of the mounting frame and frame structure of this application, showing the state of the curved surface before installation; Figure 8 yes Figure 7 Enlarged diagram of section C; Figure 9 yes Figure 5 Enlarged schematic diagram of section D in the middle; Figure 10 yes Figure 9 Enlarged schematic diagram of section E in the middle; Figure 11 yes Figure 9 Enlarged schematic diagram of section F in the middle.

[0028] Reference numerals: 1. Frame; 11. Outer ring; 12. Inner ring; 13. Mounting bracket; 14. Nozzle; 2. Feeding assembly; 21. First feeding component; 211. First feeding box; 212. First feeding pipe; 213. First diverting pipe; 22. Second feeding component; 221. Second feeding box; 222. Second feeding pipe; 223. Second diverting pipe; 3. Rotary drive assembly; 31. First drive motor; 32. First transmission component; 33. Second drive motor; 34. Second transmission component; 4. Locking assembly; 41. Locking block; 42. Locking screw 5. Bolt; 6. Sliding drive component; 7. Guide rod; 8. Lead screw; 9. Third drive motor; 10. Blowing assembly; 11. Air supply box; 12. Nozzle; 13. Energy-saving mechanism; 14. Sealing assembly; 15. Sealing block; 16. Extension component; 17. Pipe body; 18. Clamping sleeve; 19. Pressure stabilizing assembly; 10. Recycling block; 11. Return groove; 12. Return chamber; 13. Return hole; 14. Sealing block; 15. Reset component; 16. Buffer assembly; 17. Buffer spring; 18. Limiting ring; 19. Curved panel. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0030] This application discloses a sheet metal spraying equipment.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A panel painting device includes a frame 1, on which an outer ring 11 and an inner ring 12 are rotatably mounted. The inner ring 12 is located inside the outer ring 11 and is coaxially arranged. An annular mounting bracket 13 for mounting multiple sets of curved panels 9 is slidably mounted on the frame 1. The annular mounting bracket 13 is coaxially arranged between the inner ring 12 and the outer ring 11. A sliding drive component 5 is provided on the frame 1 to drive the mounting bracket 13 to slide along the axial direction. Multiple sets of panels for painting are spaced apart on the outer ring 11 and the inner ring 12. The spray nozzle 14 for painting the curved panel 9 is provided with a rotary drive assembly 3 on the frame 1 for driving the outer ring 11 and inner ring 12 to rotate. The frame 1 is also provided with a feeding assembly 2 for supplying paint to multiple sets of spray nozzles 14. When the inner ring 12 and outer ring 11 rotate, the multiple sets of spray nozzles 14 perform rotary painting on multiple sets of curved panels 9 that slide with the mounting frame 13. The feeding assembly 2 is provided with multiple energy-saving mechanisms 7 for reducing paint waste when the spray nozzles 14 move between adjacent curved panels 9.

[0032] Reference Figure 2 and Figure 4 The frame 1 is fixedly installed on the ground. The feeding assembly 2 includes a first feeding component 21 and a second feeding component 22. The first feeding component 21 is mounted on the frame 1 and includes a first feeding box 211, a first feeding pipe 212, and a first diversion pipe 213. The first feeding box 211 has a circular structure and is fixedly mounted on the frame 1. The first feeding pipe 212 is fixedly mounted on the outer wall of the first feeding box 211 and is used to continuously feed paint into the first feeding box 211. The first diversion pipe 213 has a circular structure and is fixedly mounted on the first feeding box 211. Multiple sets of components connected to the first feeding box 213 are spaced apart on the side wall of the first diversion pipe 213. The first distribution pipe 213 is connected to the first supply pipe 212 through the internal flow-diverting hole of the box 211. The first distribution pipe 213 is used to evenly distribute the paint discharged from the first supply pipe 212 into the first supply box 211. The first supply box 211 has a first empty groove on its inner side wall. The outer ring 11 is rotatably connected to the first supply box 211. The outer ring 11 is used to rotate and seal the first empty groove. Multiple sets of nozzles 14 are arranged in a circumferential array on the end of the outer ring 11 away from the first supply box 211. The number of nozzles 14 is the same as the number of curved panels 9 on the same ring of the mounting frame 13. In this embodiment, there are three sets of curved panels 9 on the same ring of the mounting frame 13 and three sets of nozzles 14 on the outer ring 11.

[0033] Reference Figure 3 , Figure 4 and Figure 5 The second feeding component 22 is mounted on the frame 1. The second feeding component 22 includes a second feeding box 221, a second feeding pipe 222, and a second diverting pipe 223. The second feeding box 221 has a circular structure and is fixedly mounted on the frame 1. The second feeding box 221 is coaxially mounted with the first feeding box 211 and is located inside the first feeding box 211. The second feeding pipe 222 is fixedly mounted inside the second feeding box 221 and is used to continuously feed paint into the second feeding box 221. Multiple sets of the second diverting pipe 223 are provided, with one end of each set... The second feed pipe 223 is fixedly installed on the second feed pipe 222 and communicates with the inside of the second feed pipe 222. The other end of the multiple sets of second diversion pipes 223 is fixed on the inner side wall of the second feed box 221, so as to evenly distribute the paint in the second feed pipe 222 into the second feed box 221. The outer side wall of the second feed box 221 is provided with a second empty groove. The inner ring 12 is rotatably connected to the second feed box 221. The inner ring 12 is used to rotate and seal the second empty groove. Multiple sets of nozzles 14 are arranged in a circumferential array on the end of the inner ring 12 away from the second feed box 221. The number of nozzles 14 is the same as the number of curved panels 9 on the same ring on the mounting bracket 13.

[0034] Reference Figure 1 and Figure 2 The rotary drive assembly 3 is mounted on the frame 1. The rotary drive assembly 3 includes a first drive motor 31, a first transmission component 32, a second drive motor 33, and a second transmission component 34. The first drive motor 31 is fixedly mounted on the frame 1. The first transmission component 32 is mounted on the frame 1 and connected to the outer ring 11. The first drive motor 31 drives the outer ring 11 to rotate via the first transmission component 32. The second drive motor 33 is fixedly mounted on the frame 1 and located inside the mounting bracket 13. The second transmission component 34 is mounted on the frame 1 and connected to the inner ring 12. The motor 33 drives the inner ring 12 to rotate through the second transmission component 34. The first transmission component 32 and the second transmission component 34 in this embodiment have the same structure. The following explanation takes the inner ring 12 as an example. The second transmission component 34 includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is coaxially fixed on the output shaft of the second drive motor 33, and the driven wheel is coaxially fixed on the inner ring 12. The transmission belt is used to connect the driving wheel and the driven wheel. When the second drive motor 33 drives the driving wheel to rotate, it drives the driven wheel to rotate through the transmission belt, thereby driving the inner ring 12 to rotate.

[0035] Reference Figure 4 , Figure 6 , Figure 7 and Figure 8The mounting bracket 13 has a ring structure and is located between the inner ring 12 and the outer ring 11. The axes of the mounting bracket 13, the inner ring 12, and the outer ring 11 coincide with each other, and the mounting bracket 13 can slide along the axial direction. The mounting bracket 13 is used to fix multiple sets of curved panels 9. The curved panels 9 have mounting grooves on the side wall near the mounting bracket 13. The mounting bracket 13 is provided with multiple sets of locking components 4 for locking the curved panels 9. The locking components 4 include locking blocks 41 and locking bolts 42. The locking blocks 41 are slidably installed on the mounting bracket 13. After the locking blocks 41 are inserted into the mounting grooves, they engage with the mounting grooves to lock the curved panels 9. The mounting bracket 13 is fixed in place; the locking bolt 42 is threadedly installed on the mounting bracket 13, and the locking bolt 42 is rotatably connected to the locking block 41. When an external force drives the locking bolt 42 to rotate, the locking bolt 42 is threadedly connected to the mounting bracket 13, thereby driving the locking block 41 to slide away from or towards the mounting groove. At the same time, when there is no external force, the threaded connection between the locking bolt 42 and the mounting bracket 13 prevents the locking bolt 42 from rotating. The curved panel 9 is locked in at least two directions by multiple sets of locking components 4, thereby locking the curved panel 9 on the mounting bracket 13. Multiple sets of curved panels 9 are circumferentially arrayed on the mounting bracket 13.

[0036] Reference Figure 1 and Figure 7 The frame 1 is equipped with a sliding drive component 5 that drives the mounting frame 13 to slide along the axial direction. The sliding drive component 5 includes a guide rod 51, a lead screw 52, ​​and a third drive motor 53. The guide rod 51 is fixedly installed on the frame 1 and is slidably connected to the mounting frame 13. There are two sets of guide rods 51, and the two sets of guide rods 51 together guide the sliding of the mounting frame 13. The lead screw 52 is rotatably installed on the frame 1 and is threadedly connected to the mounting frame 13. When the lead screw 52 rotates, it drives the mounting frame 13 to slide on the frame 1. The third drive motor 53 is fixedly installed on the frame 1 and is connected to the lead screw 52 through a coupling. The third drive motor 53 is used to drive the lead screw 52 to rotate, thereby driving the mounting frame 13 to slide.

[0037] Reference Figure 2 , Figure 4 , Figure 6 and Figure 8Specifically, multiple sets of curved panels 9 are arranged in a circumferential array on the mounting frame 13 and locked by the locking block 41. Then, the third drive motor 53 drives the mounting frame 13 to slide, and then the first drive motor 31 and the second drive motor 33 are started to drive the outer ring 11 and the inner ring 12 to rotate. The paint in the first supply box 211 is sprayed onto the outer surface of the curved panel 9 through the nozzle 14 on the outer ring 11, and the paint in the second supply box 221 is sprayed onto the inner surface of the curved panel 9 through the nozzle 14 on the inner ring 12. The rotation of the outer ring 11 and the inner ring 12 and the sliding of the mounting frame 13 work together to perform spiral painting on the opposite sides of the curved panel 9.

[0038] Reference Figure 3 and Figure 4 The frame 1 is equipped with a blower assembly 6 for blowing air onto the painted curved surface. The blower assembly 6 includes an air supply box 61 and nozzles 62. The air supply box 61 is fixedly installed on the feeding assembly 2 and is used to provide high-pressure airflow. The air supply box 61 is rotatably connected to the outer ring 11 or the inner ring 12. Multiple sets of nozzles 62 are provided, and the multiple sets of nozzles 62 are spaced apart on the outer ring 11 and the inner ring 12. The nozzles 62 are used to blow out the high-pressure airflow in the air supply box 61 and to blow air onto the painted curved panel 9. The number of nozzles 62 is the same as the number of spray heads 14. The rotation center of the nozzles 62 is spaced apart from the rotation center of the spray heads 14, wherein the rotation center of the nozzles 62 is located at the rotation center of the spray heads 14. The rear end is designed so that the spray nozzle 14 first sprays paint on the curved panel 9, and then the nozzle 62 blows air onto the painted curved panel 9. The nozzle 62 and the spray nozzle 14 are staggered so that under the rotation of the outer ring 11 or the inner ring 12 and in conjunction with the sliding of the mounting bracket 13, the movement trajectory of the nozzle 62 on the curved panel 9 is finally made to coincide, and the movement trajectory of the nozzle 62 has a certain delay relative to the movement trajectory of the spray nozzle 14, so that the atomized particles in the air move towards the curved panel 9 under the blowing of the nozzle 62, thereby improving the paint application rate. In this embodiment, three sets of nozzles 62 are provided on both the outer ring 11 and the inner ring 12, and there is a 60-degree angle difference between the spray nozzle 14 and the nozzle 62.

[0039] Reference Figure 2 , Figure 4 and Figure 9Since the gap between adjacent curved panels 9 does not require painting, the energy-saving mechanism 7 reduces paint waste when the nozzle 14 moves between adjacent curved panels 9. The energy-saving mechanism 7 includes a sealing component 71 and a pressure-stabilizing component 72. The sealing component 71 is installed on the feeding component 2 and is used to seal the nozzle 14. The pressure-stabilizing component 72 is installed on the feeding component 2 and is used to discharge excess paint from the feeding component 2 when the nozzle 14 is sealed, thereby keeping the pressure value in the feeding component 2 stable. The pressure-stabilizing component 72 is turned on when the sealing component 71 seals the nozzle 14, and turned off at other times.

[0040] Reference Figure 2 , Figure 9 and Figure 10 Multiple energy-saving mechanisms 7 are provided on both the outer ring 11 and the inner ring 12. The energy-saving mechanisms 7 on the outer ring 11 and the inner ring 12 have the same structure. The following explanation focuses on the energy-saving mechanism 7 on the inner ring 12: The voltage stabilizing component 72 includes a recovery block 721, a sealing block 722, and a reset component 723. Two sets of recovery blocks 721 are fixedly installed on the second feed box 221. A return groove 7211 is opened on the opposite side of the two sets of recovery blocks 721. A return cavity 7212 communicating with the outside is opened inside the recovery block 721. A return hole 7213 communicating with the return groove 7211 and the return cavity 7212 is opened on the side wall of the return groove 7211. The return hole 7213 has a rectangular structure. The sealing block 722 is slidably disposed in the return groove 7211. When the sealing block 722 slides to the bottom of the return groove 7211, the paint in the second feed box 221 can pass through the sealing block. The gap between block 722 and return groove 7211 allows the water to flow into return hole 7213, and finally discharge through return chamber 7212 for recycling. Reset member 723 is fixedly installed on the bottom of return groove 7211. Reset member 723 is used to push sealing block 722 away from the bottom of return groove 7211. When the reset block pushes sealing block 722 back to its original position, sealing block 722 seals return hole 7213. In this embodiment, the two sets of sealing blocks 722 are slidably arranged in a direction that approaches or moves away from each other. Reset member 723 is a set of reset springs installed at intervals. The sum of the diameters of the two sets of return holes 7213 on the two sets of symmetrical blocks is equal to the diameter of nozzle 14. This allows the paint in the second supply box 221 to be discharged through return hole 7213 when the nozzle 14 is blocked, thereby ensuring the stability of the pressure value in the second supply box 221.

[0041] Reference Figure 9 , Figure 10 and Figure 11The sealing assembly 71 includes a sealing block 711 and an extension member 712. The sealing block 711 is fixedly installed inside the second feed box 221 and is located at the bottom of the two sets of recovery blocks 721. The extension member 712 is set on the feed end of the nozzle 14 and is used to extend the length of the feed end of the nozzle 14. The bottom of the extension member 712 slides and abuts against the sealing block 711. When the extension member 712 slides and abuts against the sealing block 711, the sealing block 711 seals the inlet end of the nozzle 14. The extension member 712 presses against the two sets of sealing blocks 722 against the side walls, thereby pressing the two sets of sealing blocks 722 against the bottom of the return groove 7211. This allows the extension member 712 to open the two sets of return holes 7213 when the sealing block 711 slides and seals the nozzle 14 through the extension member 712, ensuring that the pressure value in the second feed box 221 is stable.

[0042] Reference Figure 10 and Figure 11 The extension tube includes a tube body 7121 and a clamping sleeve 7122. The tube body 7121 is sleeved on the feed end of the nozzle 14 and is located inside the second feed box 221. The tube body 7121 is used to extend the length of the feed end of the nozzle 14. The clamping sleeve 7122 is rotatably installed outside the tube body 7121. The clamping sleeve 7122 is used to press against the sealing block 722 and push the sealing block 722 to slide towards the bottom of the return groove 7211, so that the seal is pressed against the bottom of the return groove 7211. By rolling the clamping sleeve 7122 against the two sets of sealing blocks 722, the wear rate of the sealing blocks 722 is reduced.

[0043] Reference Figure 11 The tube body 7121 can be slidably installed on the feed end of the nozzle 14 along the axis of the nozzle 14. The nozzle 14 is provided with a buffer assembly 8 to improve the sealing between the tube body 7121 and the sealing block 711. The buffer assembly 8 includes a buffer spring 81 and a limiting ring 82. The buffer spring 81 is sleeved on the nozzle 14 and is used to push the tube body 7121 to slide closer to the sealing block 711. The limiting ring 82 is fixedly installed on the nozzle 14 and is used to limit the maximum distance that the tube body 7121 slides closer to the sealing block 711, thereby reducing the probability that the tube body 7121 will slide out of the nozzle 14. Guide surfaces are provided on both ends of the sealing block 711. The guide surfaces are used to push the tube body 7121 closer to the buffer spring 81, so that when the tube body 7121 just comes into contact with the sealing block 711, it will push the tube body 7121 to compress the buffer spring 81.

[0044] Reference Figures 1-11Specifically, when the third drive motor 53 starts and drives the mounting bracket 13 to slide, the first drive motor 31 and the second drive motor 33 are started, thereby driving the outer ring 11 and the inner ring 12 to rotate. The nozzle 14 performs rotary spraying on the opposite sides of the curved panel 9. Then, the nozzle 62 delays the blowing of air onto the spraying path on the curved panel 9 to complete the painting of the curved panel 9. When the nozzle 14 enters the gap between the curved panels 9, it guides the tube body 7121 through the guide surface, causing the tube body 7121 to compress the buffer spring 81 and guide the tube body 7121 between the two sets of return blocks. The sealing block 711 then blocks the tube body 7121. 21 is used for sealing, and at the same time, the clamping sleeve 7122 rolls and presses against the two sets of sealing blocks 722, so that the paint in the first feed box 211 and the second feed box 221 is discharged through the return hole 7213. This ensures that the pressure value in the first feed box 211 and the second feed box 221 remains stable during the sealing of the nozzle 14, so that when the nozzle 14 enters the next set of curved panels 9, the pressure value of the paint sprayed by the nozzle 14 remains stable. At the same time, it avoids the probability of excessive pressure value in the first feed box 211 or the second feed box 221 when the nozzle 14 is abnormally stuck between the curved panels 9, thus improving the safety of the equipment.

[0045] The working principle of this application embodiment is as follows: By mounting multiple sets of curved panels 9 in a circumferential array on the mounting frame 13, the third drive motor 53 drives the mounting frame 13 to slide via the lead screw 52. At the same time, the first drive motor 31 and the second drive motor 33 drive the outer ring 11 and the inner ring 12 to rotate. The paint in the first feed box 211 and the second feed box 221 is sprayed onto the curved panels 9 through multiple sets of nozzles 14. At the same time, the air nozzle 62 blows air onto the painted curved panels 9 in a delayed manner, which improves the paint loading rate. When the nozzle 14 enters the corresponding gap between the curved panels 9, the nozzle 14 is blocked by the sealing block 711 to reduce the amount of paint wasted. At the same time, the retaining sleeve 7122 opens the return hole 7213 to discharge the excess paint in the first feed box 211 and the second feed box 221, thereby ensuring the stability of the internal pressure value and the stability of the pressure value when the nozzle 14 is restarted, thus improving the painting effect on the curved panels 9.

[0046] This application discloses a painting method for a sheet metal spraying equipment.

[0047] Reference Figures 1-11 A painting method for a sheet metal spraying equipment includes the following steps: S1. Installation of curved panel 9: Set multiple sets of curved panels 9 on the mounting bracket 13; Specifically, the curved panel 9 is placed in the designated position on the mounting bracket 13, and then the locking bolt 42 is rotated to move the locking bolt 42 on the mounting bracket 13. This causes the locking block 41, which is rotatably connected to the locking bolt 42, to slide closer to the mounting groove, and finally the locking block 41 is inserted into the mounting groove. Multiple sets of locking blocks 41 are used to lock the curved panel 9 in multiple directions, thereby fixing the curved panel 9 on the mounting bracket 13.

[0048] S2, Mounting bracket 13 movement: After the multiple curved panels 9 are installed, the sliding drive 5 drives the mounting bracket 13 with the curved panels 9 to slide. Specifically, the third drive motor 53 starts, and the third drive motor 53 drives the lead screw 52 to rotate, thereby driving the mounting bracket 13 to slide along the guide rod 51 at a certain speed, and then driving the multiple curved panels 9 to pass between the outer ring 11 and the inner ring 12.

[0049] S3. Spray paint on curved panel 9: Start the rotary drive assembly 3 to drive the outer ring 11 and inner ring 12 to rotate. Spray paint on the two opposite sides of curved panel 9 on mounting bracket 13 through multiple sets of nozzles 14. Through the sliding of mounting bracket 13, the spiral painting of multiple sets of curved panels 9 is finally achieved. The air blowing path of nozzle 62 on curved panel 9 overlaps with the painting path of nozzle 14 and is delayed for a certain period of time. Specifically, the first drive motor 31 drives the outer ring 11 to rotate, thereby causing the paint in the first feed box 211 to be sprayed onto the outer side of the curved panel 9 through multiple sets of spray nozzles 14 on the outer ring 11; the second drive motor 33 drives the inner ring 12 to rotate, thereby causing the paint in the second feed box 221 to be sprayed onto the inner side of the curved panel 9 through multiple sets of spray nozzles 14 on the inner ring 12; as the mounting bracket 13 slides at a constant speed along the guide rod 51, the multiple sets of spray nozzles 14 on the outer ring 11 and inner ring 12 perform spiral painting on the opposite sides of the curved panel 9; at the same time, the air nozzle 62 sprays the spray nozzles 14 after a certain period of time. The paint path is blown to improve the paint application rate. This embodiment takes the painting on the inner side of the curved panel 9 as an example. The distance between two adjacent painting paths on the inner side of the curved panel 9 is L1. The sliding distance of the mounting bracket 13 when the inner ring 12 rotates one revolution is S. The number of nozzles 14 on the inner ring 12 is X, where L1=S / X. The distance between the rotation center of the air nozzle 62 and the rotation center of the nozzle 14 is L2. Since the number of air nozzles 62 is the same as the number of nozzles 14, and the air nozzles 62 and nozzles 14 are installed alternately, the distance between the rotation center of the air nozzle 62 and the rotation center of the nozzle 14 is L2=L1 / 2.

[0050] S4. Removal of curved panel 9: After the mounting bracket 13 moves into place, the curved panel 9 will be removed by locking component 4, and sliding drive component 5 will reset the mounting bracket 13. Specifically, after the mounting bracket 13 moves to the designated position, the first drive motor 31 and the second drive motor 33 are turned off, and the spray nozzle 14 stops spraying paint. After a delay, the air nozzle 62 stops blowing air. Then, the painted curved panel 9 is taken out, and finally the third drive motor 53 drives the mounting bracket 13 to reset, so as to facilitate the painting of the new curved panel 9.

[0051] The working principle of this application embodiment is as follows: The first drive motor 31 drives the outer ring 11 to rotate, and the second drive motor 33 drives the inner ring 12 to rotate. Multiple sets of spray nozzles 14 on the outer ring 11 and inner ring 12 spray paint on the opposite sides of the curved panel 9 on the mounting bracket 13. Multiple sets of air nozzles 62 spray air on the curved panel 9. At the same time, the third drive motor 53 drives the mounting bracket 13 to slide, so that the multiple sets of spray nozzles 14 spray paint spirally on the opposite sides of the multiple sets of curved panels 9. At the same time, the multiple sets of air nozzles 62 delay the spraying path of the spray nozzles 14 on the curved panel 9 to improve the spraying effect on the curved panel 9.

[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A panel paint spraying apparatus characterised in that: The utility model provides a kind of multi-group curved surface board painting device, including frame body (1), the outer ring (11) and the inner ring (12) are rotationally arranged on the frame body (1), the inner ring (12) is coaxially arranged inside the outer ring (11), the annular mounting rack (13) for installing multiple curved surface boards (9) is slidably arranged on the frame body (1), the annular mounting rack (13) is coaxially arranged between the inner ring (12) and the outer ring (11), the sliding drive (5) for driving mounting rack (13) to slide along the axis direction is arranged on the frame body (1), the outer ring (11) and the inner ring (12) are spaced apart and are provided with multiple spray heads (14) for painting curved surface board (9), the rotary drive assembly (3) for driving the outer ring (11) and the inner ring (12) to rotate is arranged on the frame body (1), the feed assembly (2) for providing paint into multiple spray heads (14) is arranged on the frame body (1), when the inner ring (12) and the outer ring (11) rotate, multiple spray heads (14) rotate and paint multiple curved surface boards (9) that slide with mounting rack (13);The feed assembly (2) is provided with multiple energy-saving mechanisms (7) for reducing paint waste when spray head (14) moves between adjacent two curved surface boards (9), the energy-saving mechanism (7) comprises: A sealing assembly (71) is arranged on the feed assembly (2), and the sealing assembly (71) blocks the spray head (14); A pressure stabilizing assembly (72) is arranged on the feed assembly (2), and the pressure stabilizing assembly (72) is opened when the sealing assembly (71) blocks the spray head (14) and discharges excess paint in the feed assembly (2).

2. A panel paint spraying apparatus as claimed in claim 1, wherein: The pressure stabilizing assembly (72) comprises: Two groups of recovery blocks (721) are symmetrically arranged on the feed assembly (2), and a reflux groove (7211) is formed in the opposite side of the two groups of recovery blocks (721); a reflux cavity (7212) is formed in the recovery block (721) and communicates with the outside; a reflux hole (7213) is formed in the side wall of the reflux groove (7211) and communicates with the reflux cavity (7212) and the reflux groove (7211); A sealing block (722) is slidably arranged in the reflux groove (7211), and when the sealing block (722) slides to the bottom of the reflux groove (7211), the paint in the feed assembly (2) can flow into the reflux hole (7213) through the gap between the sealing block (722) and the reflux groove (7211); A reset member (723) is arranged on the bottom of the reflux groove (7211), and the reset member (723) is used for pushing the sealing block (722) away from the bottom of the reflux groove (7211); after the reset of the sealing block (722), the sealing block (722) seals the reflux hole (7213).

3. A panel paint spraying apparatus as claimed in claim 2, wherein: The sealing assembly (71) comprises: A blocking block (711) is arranged on the feed assembly (2) and located at the bottom of the two groups of recovery blocks (721). The extension piece (712) is arranged on the spray head (14) and is used for extending the length of the feed end of the spray head (14), the extension piece (712) is in sliding abutment with the blocking block (711) and blocks the inlet end of the spray head (14), the extension piece (712) is in abutment with the two groups of sealing blocks (722) on the opposite two side walls and opens the backflow hole (7213).

4. A panel paint spraying apparatus as claimed in claim 3, wherein: The extension piece (712) comprises: A pipe body (7121) is sleeved on the feed end of the spray head (14) and is located in the feed assembly (2), the pipe body (7121) is used for extending the length of the feed end of the spray head (14) and is in sliding sealing abutment with the sealing block (722); An abutment sleeve (7122) is rotationally arranged outside the pipe body (7121), the abutment sleeve (7122) is used for abutting on the sealing block (722) and sliding the sealing block (722) to the bottom of the backflow groove (7211), the abutment sleeve (7122) is in rolling abutment with the two groups of sealing blocks (722).

5. A panel paint spraying apparatus as claimed in claim 4, wherein: The pipe body (7121) can be arranged on the feed end of the spray head (14) in the axial direction of the spray head (14), the spray head (14) is provided with a buffer assembly (8) for improving the sealing performance of the pipe body (7121) and the blocking block (711), the buffer assembly (8) comprises: A buffer spring (81) is sleeved on the spray head (14) and is used for sliding the pipe body (7121) to the direction close to the blocking block (711), a guide surface is formed on the end surface of the blocking block (711) to facilitate the pipe body (7121) to be pushed to the direction close to the buffer spring (81); A limiting ring (82) is sleeved on the spray head (14) and limits the maximum distance value of the pipe body (7121) sliding to the direction close to the blocking block (711).

6. The apparatus for painting a panel of claim 1, wherein: The frame body (1) is provided with a blowing assembly (6) for blowing the curved panel (9) after painting, the blowing assembly (6) comprises: A wind supply box (61) is arranged on the feed assembly (2) and is used for providing high-pressure airflow, the wind supply box (61) is rotationally connected with the outer ring (11) or the inner ring (12); A plurality of air nozzles (62) are arranged on the outer ring (11) and the inner ring (12) at intervals and are used for blowing the high-pressure airflow in the wind supply box (61) out, the air nozzles (62) are used for blowing the curved panel (9) after painting.

7. A panel paint spraying apparatus as claimed in claim 6, wherein: The number of the air nozzles (62) is the same as the number of the spray heads (14), the rotation centers of the air nozzles (62) and the spray heads (14) are arranged at intervals, the air nozzles (62) and the spray heads (14) are arranged alternately, the blowing track of the air nozzles (62) on the curved panel (9) coincides with the painting path of the spray heads (14) on the curved panel (9), and the air nozzles (62) are used for blowing the curved panel (9) after painting by the spray heads (14).

8. The apparatus for painting a board according to claim 1, wherein: The rotary drive assembly (3) comprises: A first drive motor (31) is arranged on the frame body (1). A first transmission member (32) is arranged on the frame body (1) and connected with the outer ring (11), and the first drive motor (31) drives the outer ring (11) to rotate through the first transmission member (32); A second drive motor (33) is arranged on the frame body (1); A second transmission member (34) is arranged on the frame body (1) and connected with the inner ring (12), and the second drive motor (33) drives the inner ring (12) to rotate through the second transmission member (34).

9. The apparatus for painting a board according to claim 1, wherein: The curved panel (9) is provided with a mounting groove on the side wall close to the mounting frame (13), and the mounting frame (13) is provided with a plurality of locking assemblies (4) for locking the curved panel (9), and the locking assembly (4) comprises: A locking block (41) is slidingly arranged on the mounting frame (13) and is in clamping connection with the mounting groove, and the locking block (41) is inserted into the mounting groove to lock the curved panel (9) on the mounting frame (13); A locking bolt (42) is threadedly arranged on the mounting frame (13) and is in rotary connection with the locking block (41), and the locking bolt (42) is rotated to push the locking block (41) to slide.

10. The paint spraying method of a panel paint spraying apparatus according to claims 1 to 9, characterized by: The method comprises the following steps: S1, curved panel (9) installation: a plurality of curved panels (9) are arranged on the mounting frame (13); S2, mounting frame (13) movement: after the installation of the plurality of curved panels (9) is completed, the sliding drive member (5) drives the mounting frame (13) provided with the curved panel (9) to slide; S3, paint the curved panel (9): start the rotary drive assembly (3) to drive the outer ring (11) and the inner ring (12) to rotate, and rotate and paint the two opposite surfaces of the curved panel (9) on the mounting frame (13) through the plurality of nozzles (14), and finally realize spiral painting of the plurality of curved panels (9) through the sliding of the mounting frame (13), and the blowing path of the air nozzle (62) on the curved panel (9) coincides with the painting path of the nozzle (14) and is delayed for a certain period of time; S4, disassembly of the curved panel (9): after the mounting frame (13) is moved to the position, the curved panel (9) is taken out through the locking assembly (4), and the mounting frame (13) is reset by the sliding drive member (5).

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