A paint spraying device and method suitable for spraying paint on parts of different height rotary bodies
Patent Information
- Application Number
- CN202611301628.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-26
- Publication Date
- 2026-10-09
AI Technical Summary
I、其中，由于往复气缸6的活塞杆的极限运动行程是有限的，因此，只能对常规高度的回转零件喷漆，而无法对高度更高的回转体零件进行喷漆，也就是说，无法对不同高度的回转体零件喷漆，存在通用性差的技术缺陷
[0017]本发明具有以下优点：能够对不同高度的回转体零件喷漆、极大提高对回转体零件喷漆质量。
Smart Images
Figure CN122875413A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of painting the outer cylindrical surface of rotating parts, and in particular to a painting apparatus and method suitable for painting rotating parts of different heights. Background Technology
[0002] The structure of a certain rotating part 1 is as follows Figures 1-2 As shown, it has a cylindrical cavity 2 inside. The manufacturing process requires that a layer of paint be sprayed onto the outer surface of the rotating part to meet customer requirements.
[0003] The workshop uses, for example Figure 3 The painting fixture shown is used to spray a layer of paint on the outer surface of a rotating part. The painting fixture includes a worktable 3 and a drive motor 4 fixed on the bottom surface of the worktable 3. The output axis of the drive motor 4 passes through the worktable 3 upward and a turntable 5 is fixed on its extension end. A reciprocating cylinder 6 is fixed on the bottom surface of the worktable 3. The piston rod of the reciprocating cylinder 6 passes through the worktable 3 upward and a lifting plate 7 is fixed on its extension end. A paint gun head 8 is fixed inside the lifting plate 7. The top port 9 of the paint gun head 8 is connected to a filling pump via a hose A. The bottom port 10 of the paint gun head 8 is connected to an air compressor via a hose B. The paint outlet 11 of the paint gun head 8 is set to the left.
[0004] The method by which the worker uses this spray painting fixture to spray a layer of paint onto the outer surface of the rotating part 1 is as follows: T1, the worker takes out a... Figures 1-2 The rotating part 1 shown is placed on the top surface of the turntable 5, as shown. Figure 4 As shown, adjust the position of the rotating part 1 to ensure that the rotating part 1 faces the paint outlet 11 of the paint gun head 8; T2. Turn on the drive motor 4. The drive motor 4 drives the turntable 5 to rotate. The turntable 5 drives the rotating part 1 to rotate synchronously around its own axis. T3. The worker starts the filling pump and air compressor. The filling pump draws out the liquid paint from the storage tank and then fills the liquid paint into the paint gun head 8 through the hose A. At the same time, the air compressor inputs pressurized air into the paint gun head 8. Under the pressure of the air, the liquid paint in the paint gun head 8 is sprayed out from the paint outlet 11. The sprayed paint is initially sprayed onto the outer cylindrical surface of the rotating part 1. T4. Control the piston rod of the reciprocating cylinder 6 to perform reciprocating lifting and lowering motion. The piston rod drives the lifting plate 7 to perform reciprocating lifting and lowering motion. The lifting plate 7 drives the paint gun head 8 to perform reciprocating lifting and lowering motion, thereby realizing the reciprocating up and down spraying of paint on the rotating part 1. After spraying for a period of time, a layer of paint can be finally sprayed on the outer cylindrical surface of the rotating part 1. T5. After painting, the worker controls the reciprocating cylinder 6, the injection pump, the air compressor and the drive motor 4 to shut down, and then removes the painted rotating part 1.
[0005] However, although this painting fixture can paint the rotating part 1, it still has the following technical defects: I. Since the piston rod of the reciprocating cylinder 6 has a limited limit stroke, it can only paint rotating parts of conventional height, but cannot paint rotating parts of higher height. In other words, it cannot paint rotating parts of different heights, resulting in a technical defect of poor versatility.
[0006] II. The top port of the rotating part 1 is in an open state, so the paint sprayed from the paint gun head 8 will enter the rotating part 1 from the top port, thus causing paint to adhere to the inner wall of the rotating part 1 as well. [However, the process requires that no paint is allowed to be sprayed onto the inner wall of the rotating part 1, thereby improving the painting quality of the rotating part.]
[0007] Therefore, there is an urgent need for a painting device and method that can paint rotating parts of different heights and greatly improve the painting quality of rotating parts. Summary of the Invention
[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a painting device and method suitable for painting rotating parts of different heights.
[0009] The objective of this invention is achieved through the following technical solution: a painting device suitable for painting rotating parts of different heights, comprising a frame, a drive motor fixed on the frame, the output axis of the drive motor penetrating the top wall of the frame, and a turntable connected to the extended end, a cylindrical positioning platform fixed on the top surface of the turntable, a threaded column fixed on the top surface of the cylindrical positioning platform, a connecting plate fixed on the right side wall of the frame, and a vertically arranged upright plate fixed on the connecting plate; A servo motor and a guide seat are fixedly mounted on the upright plate. The servo motor is fixedly mounted on the rear end face of the lower end of the upright plate. The output axis of the servo motor passes through the upright plate forward, and a swing arm is fixedly connected to the extended end. Multiple spaced through holes are opened in the swing arm along its length direction. The guide seat is fixedly mounted on the front end face of the upper end of the upright plate. A guide rod that can reciprocate and lift is slidably installed in the guide seat. A mounting base is fixed to the top of the guide rod, and a storage cylinder is fixed to the front end of the mounting base. The bottom end of the storage cylinder is connected to the top port of the paint gun head. The bottom port of the paint gun head is connected to the air compressor via a hose, and the paint outlet of the paint gun head is set to the left. A connecting rod is hinged to the bottom end of the guide rod, and a collar is fixed to the other end of the connecting rod. The collar is hinged to a through hole of the swing arm via an adjustable hinge assembly. The painting device also includes a pressure cap, which is circular and has a central hole in its center.
[0010] The turntable, cylindrical positioning platform, and threaded column are arranged coaxially.
[0011] The outer diameter of the cylindrical positioning platform is equal to the inner diameter of the rotating part.
[0012] Two parallel connecting plates are fixed on the right side wall of the frame, and the upright plate is fixed between the two connecting plates.
[0013] The storage cylinder is secured to the front end face of the mounting base by multiple clamps.
[0014] The adjustable hinge assembly includes a screw, a spacer, and a nut. The screw passes through the through hole of the swing arm from back to front. The spacer is fitted on the extended end of the screw, and the nut is threaded onto the threaded section of the screw. The collar of the connecting rod is also fitted on the screw, and the collar is confined between the nut and the spacer, thereby enabling the collar of the connecting rod to be hinged to one of the through holes of the swing arm.
[0015] The painting device also includes a controller, which is electrically connected to the drive motor and servo motor via signal lines.
[0016] A painting method suitable for painting rotating parts of different heights includes the following steps: S1. Fix the rotating part in place using the tooling. The specific steps are as follows: S11. The worker takes out a rotating part and places it on the outside of the cylindrical positioning table from top to bottom. The rotating part is then supported on the top surface of the table. Since the outer diameter of the cylindrical positioning table is equal to the inner diameter of the rotating part, the rotating part is positioned. At this time, the rotating part is facing the paint outlet of the paint gun head. S12. The worker takes out a pressure cap, puts the center hole of the pressure cap on the outside of the threaded column, and supports the pressure cap on the top surface of the rotating part. Then, a locking nut is threaded onto the threaded column and the locking nut is pressed against the top surface of the pressure cap, thereby fixing the rotating part tooling between the turntable and the pressure cap. S2. The worker controls the start of the drive motor, and the output shaft of the drive motor drives the turntable to rotate on the horizontal plane. The turntable drives the rotating parts fixed by the tooling to rotate synchronously on the horizontal plane. S3. The worker adds a certain amount of paint to the storage cylinder. At this time, the paint enters the spray gun head from the top port of the spray gun head. Then the worker seals the top port of the storage cylinder with a sealing cap. S4. The worker starts the air compressor, which inputs pressurized air into the paint spray gun head. Under the pressure of the air, the liquid paint in the paint spray gun head is sprayed out from the paint outlet, and the sprayed paint is initially sprayed onto the outer cylindrical surface of the rotating part. S5. The worker controls the servo motor to start, and the servo motor drives the swing arm to rotate on the vertical plane. The swing arm drives the adjustable hinge assembly and connecting rod to reciprocate up and down. The connecting rod drives the guide rod to reciprocate up and down linearly relative to the stationary guide seat. The guide rod drives the mounting seat, storage cylinder and paint gun head to reciprocate up and down linearly, thereby realizing the reciprocating up and down spraying of the rotating parts. After spraying for a period of time, a layer of paint can be finally sprayed on the outer cylindrical surface of the rotating parts. S6. After the painting is finished, the worker controls the servo motor, drive motor and air compressor to shut down. Then the worker removes the locking screw and pressure cap in sequence, and then removes the painted rotating parts from the turntable. When painting the taller rotating part B, the worker's next steps are as follows: S7. The worker unscrews the nut from the screw, and then removes the screw from the through hole of the swing arm and the collar of the connecting rod. S8. The worker hinges the connecting rod collar to the end through hole of the swing arm via an adjustable hinge assembly to increase the limit stroke of the paint spray gun head. S9. The worker repeats steps S1 to S5 once to paint the taller rotating part B.
[0017] The present invention has the following advantages: it can paint rotating parts of different heights and greatly improves the painting quality of rotating parts. Attached Figure Description
[0018] Figure 1 This is a structural schematic diagram of a rotating part in the prior art; Figure 2 for Figure 1 Main section diagram; Figure 3 This is a structural diagram of a prior art painting fixture; Figure 4 This is a schematic diagram of placing a rotating part on the top surface of a turntable in the prior art; Figure 5 This is a schematic diagram of the structure of the present invention; Figure 6 for Figure 5 P-direction schematic diagram; Figure 7 for Figure 5 The main view; Figure 8 for Figure 5A schematic diagram showing the connection of the guide rod, storage cylinder, connecting rod, and collar in the process; Figure 9 for Figure 6 Enlarged view of part K in the image; Figure 10 for Figure 5 A schematic diagram showing the connection between the servo motor and the swing arm; Figure 11 This is a schematic diagram of the gland structure; Figure 12 for Figure 11 Main section diagram; Figure 13 A schematic diagram for positioning rotating parts; Figure 14 This is a schematic diagram showing how the tooling for fixing the rotating part is between the turntable and the pressure plate. In the picture: 1-Rotating part, 2-Cavity, 3-Workbench, 4-Drive motor, 5-Turntable, 6-Reciprocating cylinder, 7-Lifting plate, 8-Paint gun head, 9-Top port, 10-Bottom port, 11-Paint outlet. 12-Frame, 13-Cylindrical positioning platform, 14-Threaded column, 15-Connecting plate, 16-Upright plate, 17-Servo motor, 18-Guide seat, 19-Swing arm, 20-Through hole, 21-Guide rod, 22-Mounting base, 23-Storage cylinder, 24-Connecting rod, 25-Collar, 26-Granty cap, 27-Center hole, 28-Screw, 29-Spacer sleeve, 30-Nut, 31-Locking screw disc. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 5-12 As shown, a painting device suitable for painting rotating parts of different heights includes a frame 12 and a drive motor 4 fixed on the frame 12. The output axis of the drive motor 4 passes through the top wall of the frame 12, and a turntable 5 is connected to its extension end. A cylindrical positioning platform 13 is fixed on the top surface of the turntable 5. The outer diameter of the cylindrical positioning platform 13 is equal to the inner diameter of the rotating part 1. A threaded column 14 is fixed on the top surface of the cylindrical positioning platform 13. A connecting plate 15 is fixed on the right side wall of the frame 12, and a vertically arranged upright plate 16 is fixed on the connecting plate 15. The turntable 5, the cylindrical positioning platform 13, and the threaded column 14 are coaxially arranged.
[0020] A servo motor 17 and a guide seat 18 are fixed on the upright plate 16. The servo motor 17 is fixed on the rear end face of the lower end of the upright plate 16. The output axis of the servo motor 17 passes through the upright plate 16 in the forward direction, and a swing arm 19 is fixed on the extended end. A plurality of spaced through holes 20 are opened in the swing arm 19 along its length direction. The guide seat 18 is fixed on the front end face of the upper end of the upright plate 16. A guide rod 21 that can reciprocate and lift is slidably installed in the guide seat 18. A mounting base 22 is fixedly connected to the top of the guide rod 21. A storage cylinder 23 is fixedly mounted on the front end face of the mounting base 22. The storage cylinder 23 is secured to the front end face of the mounting base 22 by multiple clamps. The bottom end of the storage cylinder 23 is connected to the top port of the paint gun head 8. The bottom port 10 of the paint gun head 8 is connected to an air compressor via a hose. The paint outlet 11 of the paint gun head 8 faces to the left. A connecting rod 24 is hinged to the bottom end of the guide rod 21. A collar 25 is fixedly mounted on the other end of the connecting rod 24. The collar 25 is hinged via an adjustable hinge assembly. The adjustable hinge assembly includes a screw 28, a spacer 29, and a nut 30. The screw 28 passes through the through hole 20 of the swing arm 19 from back to front. The spacer 29 is fitted on the extension end of the screw 28. The nut 30 is threaded onto the threaded section of the screw 28. The collar 25 of the connecting rod 24 is also fitted on the screw 28. The collar 25 is restricted between the nut 30 and the spacer 29, thereby enabling the collar 25 of the connecting rod 24 to be hinged to the through hole 20 of the swing arm 19.
[0021] The painting device also includes a pressure cap 26, which is circular and has a central hole 27 in its center.
[0022] Two parallel connecting plates 15 are fixed to the right side wall of the frame 12, and the upright plate 16 is fixed between the two connecting plates 15. The painting device also includes a controller, which is electrically connected to the drive motor 4 and the servo motor 17 via signal lines. The worker can control the start or stop of the drive motor 4 and the servo motor 17 through the controller, thereby facilitating the worker's operation.
[0023] S1. Fix the rotating part 1 in place. The specific operation steps are as follows: S11, The worker takes out a... Figures 1-2 The rotating part 1 shown is fitted onto the outside of the cylindrical positioning platform 13 from top to bottom, and supported on the top surface of the turntable 5. Since the outer diameter of the cylindrical positioning platform 13 is equal to the inner diameter of the rotating part 1, the rotating part 1 is positioned. Figure 13 As shown, at this time, the rotating part 1 is just facing the paint outlet 11 of the paint gun head 8; S12, The worker takes out a... Figures 11-12The pressure cap 26 shown is fitted over the threaded post 14 through its central hole 27, and supported on the top surface of the rotating part 1. A locking disc 31 is then threaded onto the threaded post 14 and pressed against the top surface of the pressure cap 26, thereby fixing the rotating part 1 between the turntable 5 and the pressure cap 26. Figure 14 As shown; S2. The worker controls the start of the drive motor 4. The output shaft of the drive motor 4 drives the turntable 5 to rotate on the horizontal plane. The turntable 5 drives the rotating part 1, which is fixed by the tooling, to rotate synchronously on the horizontal plane. S3. The worker adds a certain amount of paint to the storage cylinder 23. At this time, the paint enters the spray gun head 8 from the top port 9 of the spray gun head 8. Then the worker seals the top port of the storage cylinder 23 with a sealing cap. S4. The worker starts the air compressor, which inputs pressurized air into the paint spray gun head 8. Under the pressure of the air, the liquid paint in the paint spray gun head 8 is sprayed out from the paint outlet 11. The sprayed paint is initially sprayed onto the outer cylindrical surface of the rotating part 1. S5. The worker controls the servo motor 17 to start. The servo motor 17 drives the swing arm 19 to rotate on the vertical plane. The swing arm 19 drives the adjustable hinge assembly and the connecting rod 24 to reciprocate up and down. The connecting rod 24 drives the guide rod 21 to reciprocate up and down linearly relative to the stationary guide seat 18. The guide rod 21 drives the mounting seat 22, the storage cylinder 23 and the paint gun head 8 to reciprocate up and down linearly, thereby realizing the reciprocating up and down spraying of paint on the rotating part 1. After spraying for a period of time, a layer of paint can be finally sprayed on the outer cylindrical surface of the rotating part 1. S6. After the painting is finished, the worker controls the servo motor 17, drive motor 4 and air compressor to shut down. Then the worker removes the locking screw 31 and pressure cap 26 in sequence, and then removes the painted rotating part 1 from the turntable 5. As can be seen from step S1, since the rotating part 1 is fixed between the turntable 5 and the pressure cover 26 by the tooling, and the pressure cover 26 seals the top port of the rotating part 1, the paint will not enter the rotating part 1 during the painting process in steps S2 to S5, thereby effectively avoiding the painting of the inner wall of the rotating part 1, thus greatly improving the painting quality of the rotating part 1.
[0024] When painting the taller rotating part B, the worker's next steps are as follows: S7. The worker unscrews the nut 30 from the screw 28, and then removes the screw 28 from the through hole 20 of the rocker arm 19 and the collar 25 of the connecting rod 24. S8. The worker hinges the collar 25 of the connecting rod 24 to the end through hole 20 of the swing arm 19 via an adjustable hinge assembly to increase the limit stroke of the paint gun head 8. S9. The worker repeats steps S1 to S5 once to paint the taller rotating part B.
[0025] As can be seen from steps S7-S8, the collar 25 of the connecting rod 24 can be hinged to the through hole 20 at the end of the swing arm 19 via an adjustable hinge assembly, thereby effectively increasing the limit stroke of the guide rod 21, and thus increasing the limit stroke of the paint gun head 8. This allows for painting of the rotating part 1 with a higher height, compared to... Figures 3-4 The painting method shown solves the technical problem that existing technologies cannot paint rotating parts of different heights, and has the technical feature of wider applicability.
Claims
1. A painting device suitable for painting rotating parts of different heights, characterized in that: It includes a frame (12) and a drive motor (4) fixed on the frame (12). The output axis of the drive motor (4) passes through the top wall of the frame (12) and a turntable (5) is connected to the extended end. A cylindrical positioning platform (13) is fixed on the top surface of the turntable (5). A threaded column (14) is fixed on the top surface of the cylindrical positioning platform (13). A connecting plate (15) is fixed on the right side wall of the frame (12). A vertically arranged upright plate (16) is fixed on the connecting plate (15). A servo motor (17) and a guide seat (18) are fixed on the upright plate (16). The servo motor (17) is fixed on the rear end face of the lower end of the upright plate (16). The output axis of the servo motor (17) passes through the upright plate (16) in the forward direction, and a swing arm (19) is fixed on the extended end. Multiple through holes (20) are opened in the swing arm (19) along its length direction. The guide seat (18) is fixed on the front end face of the upper end of the upright plate (16). A guide rod (21) that can reciprocate and lift is slidably installed in the guide seat (18). The top end of the guide rod (21) is fixedly connected to a mounting base (22), and a storage cylinder (23) is fixedly provided on the front end face of the mounting base (22). The bottom end of the storage cylinder (23) is connected to the top port of the paint gun head (8). The bottom port (10) of the paint gun head (8) is connected to the air compressor via a hose. The paint outlet (11) of the paint gun head (8) is set to the left. The bottom end of the guide rod (21) is hinged to a connecting rod (24), and the other end of the connecting rod (24) is fixedly provided with a collar (25). The collar (25) is hinged to a through hole (20) of the swing arm (19) via an adjustable hinge assembly. The painting device also includes a pressure cap (26), which is circular and has a central hole (27) in its center.
2. The painting device according to claim 1, suitable for painting rotating parts of different heights, is characterized in that: The turntable (5), cylindrical positioning table (13), and threaded column (14) are arranged coaxially.
3. A painting device suitable for painting rotating parts of different heights according to claim 2, characterized in that: The outer diameter of the cylindrical positioning stage (13) is equal to the inner diameter of the rotating part (1).
4. A painting device suitable for painting rotating parts of different heights according to claim 3, characterized in that: Two parallel connecting plates (15) are fixed on the right side wall of the frame (12), and the upright plate (16) is fixed between the two connecting plates (15).
5. A painting device suitable for painting rotating parts of different heights according to claim 4, characterized in that: The storage cylinder (23) is secured to the front end face of the mounting base (22) by multiple clamps.
6. A painting device suitable for painting rotating parts of different heights according to claim 5, characterized in that: The adjustable hinge assembly includes a screw (28), a spacer (29), and a nut (30). The screw (28) passes through the through hole (20) of the swing arm (19) from back to front. The spacer (29) is fitted on the extended end of the screw (28). The nut (30) is threaded onto the threaded section of the screw (28). The collar (25) of the connecting rod (24) is also fitted on the screw (28). The collar (25) is restricted between the nut (30) and the spacer (29), thereby enabling the collar (25) of the connecting rod (24) to be hinged to a through hole (20) of the swing arm (19).
7. A painting device suitable for painting rotating parts of different heights according to claim 6, characterized in that: The painting device also includes a controller, which is electrically connected to the drive motor (4) and the servo motor (17) via signal lines.
8. A painting method suitable for painting rotating parts of different heights, employing the painting apparatus for painting rotating parts of different heights as described in claim 7, characterized in that: It includes the following steps: S1. Fix the rotating part (1) in place using the tooling. The specific operation steps are as follows: S11. The worker takes out a rotating part (1) and puts the rotating part (1) on the outside of the cylindrical positioning platform (13) from top to bottom. The rotating part (1) is supported on the top surface of the turntable (5). Since the outer diameter of the cylindrical positioning platform (13) is equal to the inner diameter of the rotating part (1), the rotating part (1) is positioned. At this time, the rotating part (1) is facing the paint outlet (11) of the paint gun head (8). S12. The worker takes out a pressure cap (26), puts the center hole (27) of the pressure cap (26) on the outside of the threaded column (14), and supports the pressure cap (26) on the top surface of the rotating part (1). Then, a locking screw (31) is threaded onto the threaded column (14), and the locking screw (31) is pressed against the top surface of the pressure cap (26), thereby fixing the rotating part (1) tooling between the turntable (5) and the pressure cap (26). S2. The worker controls the start of the drive motor (4). The output shaft of the drive motor (4) drives the turntable (5) to rotate on the horizontal plane. The turntable (5) drives the rotating body part (1) fixed by the tooling to rotate synchronously on the horizontal plane. S3. The worker adds a certain amount of paint into the storage cylinder (23). At this time, the paint enters the spray gun head (8) from the top port (9) of the spray gun head (8). Then the worker seals the top port of the storage cylinder (23) with a sealing cap. S4. The worker starts the air compressor, and the air compressor inputs pressurized air into the paint gun head (8). Under the pressure of the air, the liquid paint in the paint gun head (8) is sprayed out from the paint outlet (11). The sprayed paint is initially sprayed onto the outer cylindrical surface of the rotating part (1). S5. The worker controls the servo motor (17) to start. The servo motor (17) drives the swing arm (19) to rotate on the vertical plane. The swing arm (19) drives the adjustable hinge assembly and the connecting rod (24) to reciprocate up and down. The connecting rod (24) then drives the guide rod (21) to reciprocate up and down linearly relative to the stationary guide seat (18). The guide rod (21) drives the mounting seat (22), the storage cylinder (23) and the paint gun head (8) to reciprocate up and down linearly, thereby realizing the reciprocating up and down spraying of paint on the rotating part (1). After spraying for a period of time, a layer of paint can finally be sprayed on the outer cylindrical surface of the rotating part (1). S6. After the painting is finished, the worker controls the servo motor (17), drive motor (4) and air compressor to shut down. Then the worker removes the locking screw (31) and pressure cap (26) in sequence, and then removes the painted rotating part (1) from the turntable (5). When painting the taller rotating part B, the worker's next steps are as follows: S7. The worker unscrews the nut (30) from the screw (28) and then removes the screw (28) from the through hole (20) of the rocker arm (19) and the collar (25) of the connecting rod (24); S8. The worker hinges the collar (25) of the connecting rod (24) to the end through hole (20) of the swing arm (19) via an adjustable hinge assembly to increase the limit stroke of the paint gun head (8). S9. The worker repeats steps S1 to S5 once to paint the taller rotating part B.