Rotating device applied to coating working machine of coating line and control system

Abstract

The invention discloses a rotating device applied to a coating working machine of a coating line, which comprises a coating robot arranged in a totally-closed coating production line and used for driving a spray gun to move; the rotary jig frame body mechanism is used for fixing the to-be-coated automobile parts and is matched with the coating robot to rotate; the spray gun is installed on a mechanical arm of the coating robot and used for executing automatic spraying operation of the automobile parts. According to the method, the quality defects such as coating falling and chromatic aberration are avoided, the product quality stability is guaranteed, the production period is greatly shortened, the human input and the labor intensity are reduced, the production efficiency is improved, waste and the product rejection rate are reduced, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of coating technology, and more particularly to a rotating device and control system for coating machines used in coating lines. Background Technology

[0002] In the automotive manufacturing industry, the painting process of automotive exterior parts is a key link to ensure product appearance quality and improve corrosion resistance. With the rapid development of industrial automation technology and the continuous improvement of environmental protection requirements, the traditional open production line painting mode that relies on manual operation has been gradually replaced by fully enclosed production line automated operation. The fully enclosed automated painting production line uses the robotic arm of the painting robot to drive the spray gun to complete the spraying operation, which not only greatly improves production efficiency, but also avoids the emission of environmental pollutants caused by manual operation, which is in line with the development trend of green production in modern industry. However, existing fully enclosed automated painting solutions still have shortcomings. Some automotive parts have complex structural designs with many hidden areas at tricky angles. Limited by the rotation range and movement trajectory of the painting robot's arm, simply adjusting the arm cannot achieve full coverage painting of these areas. Currently, the industry's common solution is to manually touch up any unpainted areas after the parts have undergone initial painting on the automated production line. However, this secondary processing method suffers from differences in the working environment and techniques between the two painting processes, making it difficult to maintain consistent paint thickness and adhesion between the touch-up and original paint areas. Quality defects such as coating peeling and color difference are prone to occur, affecting the overall quality stability of the product. On the other hand, subsequent touch-up coating requires workers with professional skills, and these workers need to undergo long-term training to be competent in the operation. This not only increases the labor input but also prolongs the production cycle and the labor intensity is relatively high. Furthermore, manual touch-up coating cannot be carried out in a closed environment. The paint atomization particles generated during the spraying process will directly diffuse into the air, causing environmental pollution. At the same time, it is difficult to accurately control the amount of paint used during the secondary coating process, which easily leads to paint waste. Improper operation may also increase the product scrap rate, further increasing production costs.

[0003] Therefore, those skilled in the art are dedicated to providing a rotating device and control system for coating machines in coating lines that can effectively solve the above-mentioned technical problems. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides a rotating device for use in a coating machine on a coating line, comprising: Painting robots are installed inside a fully enclosed painting production line to move spray guns. The rotating fixture frame mechanism is used to fix the automotive parts to be painted and rotates in conjunction with the painting robot. The spray gun, mounted on the robotic arm of the painting robot, is used to perform automated painting operations on automotive parts.

[0005] Furthermore, the rotating fixture frame mechanism includes a first rotating component; The first rotating component includes a positioning seat, a bracket is provided on the positioning seat, a first motor is provided on the bracket, the output end of the first motor is connected to a rotating ball, and is used to drive the rotating ball to rotate. The rotating ball is connected to a positioning frame through an extension rod, and the positioning frame is used to position the automotive part.

[0006] Furthermore, the positioning seat is disposed inside the positioning box, the positioning box has an opening for the extension rod to move, and the positioning box is provided with a door; The bracket includes a main support plate, which is connected to the positioning seat. A reinforcing plate is provided at the angle between the main support plate and the positioning seat. The first motor is provided on the outer side of the main support plate, and a first rotating component connected to the output end of the first motor is provided on the inner side of the main support plate. The first rotating component includes a connecting section connected to the output end of the first motor, the connecting section being connected to the upper end of the inclined section, the lower end of the inclined section being connected to the parallel section, the inner side of the parallel section being rotatably connected to the rotating sphere via a connecting shaft, and the outer side of the parallel section being connected to the extension rod.

[0007] Furthermore, the bracket includes a secondary support plate, which is perpendicular to the main support plate and connected to the middle section of the main support plate. A second motor is provided on the inner side of the secondary support plate, and the output end of the second motor is connected to a second rotating component located on the outer side of the secondary support plate. The second rotating component has the same structure as the first rotating component. A limiting post is provided on the second rotating component, and a limiting groove is formed on the outer wall of the rotating sphere. The limiting post is located in the limiting groove and can move along the length direction of the limiting groove.

[0008] Furthermore, the rotating fixture frame mechanism also includes a second rotating component located inside the positioning box; The second rotating assembly includes a base on which a third motor and a fourth motor are mounted. A worm gear is located between the third motor and the fourth motor. The third motor drives the worm gear to rotate. A worm wheel meshes with the worm gear. The worm wheel is rotatably mounted on a mounting frame. The two ends of the mounting frame are respectively connected to a first connector and a second connector via a first extension plate and a second extension plate. The first connector is rotatably mounted on the output shaft of the third motor, and the second connector is mounted on the output end of the fourth motor. Both sides of the mounting frame are provided with swing rods, each swing rod swings with the rotation of the worm gear, and the other end of each swing rod is connected to the positioning seat. The worm and worm gear are driven to move by a third motor, thereby driving the positioning seat to move through the swing rods. The positioning seat is movably set in the positioning box. The fourth motor drives the mounting frame to control the radial rotation of the worm wheel, and the worm wheel contacts the worm in the radial direction.

[0009] A control system for a coating machine in a coating line, the system comprising: The control command generation module is used to generate rotation angle commands, spray gun movement commands, and motor drive commands according to the painting requirements of automotive parts. The rotary drive control module is used to receive rotation angle commands and control the start, stop and speed of the first motor, the second motor, the third motor and the fourth motor respectively, so as to drive the rotary fixture frame mechanism to complete any angle rotation within 135 degrees up, down and left and right. The spray gun coordination control module is used to receive spray gun movement commands and control the robotic arm of the painting robot to drive the spray gun to move synchronously, and cooperate with the rotation of the rotating fixture frame mechanism to achieve full coverage spraying. The position detection feedback module is used to detect the real-time position of the rotating ball through the cooperation of the limiting groove and the limiting column, detect the swing position of the positioning seat through the position sensor on the mounting frame, and feed the position data back to the control command generation module; The fault monitoring and early warning module is used to monitor the operating status of each motor, the connection status of each connecting component, and the quality inspection data of the coating surface in real time. When abnormal operating parameters, loose connections, or coating defects are detected, a graded early warning signal is generated. The first-level early warning is for minor abnormalities, and the system automatically corrects them. The second-level early warning is for moderate abnormalities, and related actions are suspended and a notification is issued. The third-level early warning is for severe abnormalities, and an emergency shutdown is initiated, triggering the intelligent fault diagnosis unit. The intelligent fault diagnosis unit quickly locates faults based on a fault case database and machine learning algorithms.

[0010] Furthermore, the system also includes an AI intelligent prediction and optimization module. Based on machine learning algorithms, it analyzes historical coating data to predict the optimal rotation path of the rotating fixture frame mechanism and the best movement trajectory of the spray gun in advance, performing parameter pre-optimization before the control command generation module outputs commands. Simultaneously, this module can learn from dynamic adjustment data during the current coating process in real time, continuously iterating and optimizing the algorithm model. Through the above solutions, this invention can improve the rotation and spraying coordination accuracy of subsequent coating of similar accessories by more than 30%.

[0011] Furthermore, the system also includes: The parameter storage and calibration module stores the optimal coating rotation parameters and spray gun movement parameters for different automotive parts, constructs a dynamic parameter database, and automatically matches and intelligently corrects similar parameters based on the features of the 3D model of the parts. It also integrates a laser interferometry calibration unit, which is linked with the position detection feedback module of the rotating fixture frame mechanism to capture the rotation angle deviation and spray gun positioning deviation in real time. The algorithm automatically compensates and calibrates the deviation, with a calibration response time of ≤50ms, an angle calibration accuracy of ±0.001°, and a spray gun positioning calibration accuracy of ±0.01mm. The linkage synchronization adjustment module is used to receive real-time position data from the position detection feedback module and deviation data from the laser interference calibration unit. It dynamically adjusts the motor drive parameters and spray gun movement parameters through a multivariable coupling algorithm to realize rotation, spraying and calibration actions. The rotation error is controlled within ±0.005° and the spraying error is within ±0.02mm. The status display and interaction module adopts a holographic projection interactive interface to display the system's operating status, motor operating parameters, rotation angle, fault warning information, and calibration compensation data in real time in a three-dimensional visualization. It supports staff to input commands, modify parameters, and confirm fault handling results through voice commands or gesture operations. It also has a fault tracing function, which can automatically retrieve the complete operating data chain of the 30 seconds before the fault occurred.

[0012] Furthermore, the system also includes a coating environment adaptive adjustment module. This module integrates a temperature and humidity sensor, a paint viscosity monitoring unit, and an airflow velocity detection component. It collects real-time temperature and humidity data, paint viscosity data at the spray gun outlet, and airflow velocity data within the enclosed space of the coating production line. Through an AI intelligent prediction and optimization module, it converts the environmental data into parameter correction coefficients, dynamically adjusting motor drive parameters, spray gun movement speed, and paint spraying pressure. This ensures that the control system maintains a coating accuracy of no less than 98% of the original set value within a temperature and humidity fluctuation range of ±5℃ / ±10% RH and a paint viscosity change of ±15%. Simultaneously, this module can automatically call upon the environmental adaptation parameter library in the parameter storage calibration module according to the environmental adaptation requirements of different paint types, achieving precise matching between paint characteristics and environmental conditions.

[0013] Furthermore, the fault case database and AI intelligent prediction and optimization module transform fault data into a basis for preventative parameter correction, allowing for advance adjustment of relevant parameters during subsequent painting processes. This reduces the recurrence rate of similar faults by ≥80%. Staff can manually mark fault handling results through the status display interaction module, continuously enriching the fault case database and improving the accuracy of diagnosis and prevention.

[0014] The present invention has the following beneficial effects: 1. This invention achieves rotation at any angle within 135 degrees up, down, left, and right through the first rotating component (dual-motor driven rotating ball) and the second rotating component (worm gear and swing rod structure) of the rotating fixture frame mechanism. In conjunction with the synchronous movement of the spray gun of the painting robot, it can cover all tricky and hidden parts without manual touch-up, avoid quality defects such as coating peeling and color difference, and ensure product quality stability.

[0015] 2. The fully automated coating process eliminates the need for professional touch-up workers and extensive training. The combined operation of rotary coating and spraying reduces secondary processing steps, significantly shortens the production cycle, reduces labor input and intensity, and improves production efficiency.

[0016] 3. This invention is integrated into a fully enclosed coating production line to prevent the diffusion of paint atomized particles; the AI ​​intelligent prediction and optimization module and the parameter storage and calibration module accurately match the coating parameters, control the amount of paint used, reduce waste and product scrap rate, and lower production costs.

[0017] 4. Through the laser interference calibration unit and the linkage synchronous adjustment module, the rotation error is ±0.005° and the spray gun positioning accuracy is ±0.01mm, improving the accuracy of similar accessories by more than 30%; the coating environment adaptive adjustment module collects data such as temperature, humidity and paint viscosity in real time and dynamically adjusts parameters, maintaining a coating accuracy of more than 98% within the range of temperature and humidity fluctuations of ±5℃ / ±10%RH and paint viscosity changes of ±15%; the graded early warning mechanism combined with the fault intelligent diagnosis unit reduces the recurrence rate of similar faults by ≥80%. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the device structure of the present invention and a schematic diagram of the downward rotation structure within 135 degrees.

[0019] Figure 2 This is a schematic diagram of the structure of the device of the present invention that can be rotated at any angle within 135 degrees upwards.

[0020] Figure 3 This is a schematic diagram of the structure of the device of the present invention within 135 degrees to the left and the structure rotated at any angle.

[0021] Figure 4 This is a schematic diagram of the structure of the device of the present invention that can rotate at any angle within 135 degrees to the right.

[0022] Figure 5 This is a schematic diagram of the rotating fixture frame mechanism in this invention.

[0023] Figure 6 yes Figure 5 A structural diagram showing the structure without a positioning box.

[0024] Figure 7 This is a schematic diagram of the structure of the first rotating component of the present invention.

[0025] Figure 8 This is another three-dimensional structural diagram of the first rotating component.

[0026] Figure 9 This is a schematic diagram of the structure of a rotating sphere.

[0027] Figure 10 This is a schematic diagram of the structure in which the rotating sphere and the limiting post work together.

[0028] Figure 11 This is a schematic diagram of the structure of the first rotating component in this invention.

[0029] Figure 12 This is a schematic diagram of the second rotating component.

[0030] Figure 13 This is a schematic diagram of the structure of the worm gear located on the mounting frame in this invention.

[0031] Figure 14 This is a schematic block diagram of the control system module composition in this invention.

[0032] The attached diagram lists the components represented by each number as follows: 1. Spray gun; 2. Rotating fixture frame mechanism; 3. Automotive parts; 5. First rotating assembly; 6. Positioning seat; 7. Bracket; 8. First motor; 9. Rotating ball; 10. Extension rod; 11. Positioning frame; 12. Positioning box; 13. Opening; 15. Box door; 16. Main support plate; 17. Reinforcing plate; 19. First rotating component; 20. Connecting section; 21. Inclined section; 22. Parallel section; 23. Connecting shaft; 26. Secondary support plate; 27. Second motor; 28. Second rotating component; 29. ​​Limiting post; 30. Limiting groove; 31. Second rotating assembly; 32. Base; 33. Third motor; 35. Fourth motor; 36. Worm gear; 37. Worm wheel; 38. Mounting frame; 39. First extension plate; 50. Second extension plate; 51. First connector; 52. Second connector; 53. Swing rod. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] like Figures 1 to 14 As shown, a rotating device applied to a coating machine in a coating line includes... A painting robot is installed inside a fully enclosed painting production line to move the spray gun 1. The rotating fixture frame mechanism 2 is used to fix the automotive parts 3 to be painted, and rotates in conjunction with the painting robot; Spray gun 1 is mounted on the robotic arm of the painting robot and is used to perform automated spraying operations on automotive parts.

[0036] The rotating fixture frame mechanism 2 includes a first rotating component 5; The first rotating component 5 includes a positioning seat 6, a bracket 7 is provided on the positioning seat 6, a first motor 8 is provided on the bracket 7, the output end of the first motor 8 is connected to the rotating ball 9, and is used to drive the rotating ball 9 to rotate. The rotating ball 9 is connected to the positioning frame 11 through the extension rod 10, and the positioning frame 11 is used to position the automotive part 3.

[0037] The positioning seat 6 is disposed inside the positioning box 12. The positioning box 12 has an opening 13 for the extension rod 10 to move. The positioning box 12 is provided with a door 15. The bracket 7 includes a main support plate 16, which is connected to the positioning seat 6. A reinforcing plate 17 is provided at the angle between the main support plate 16 and the positioning seat 6. The first motor 8 is provided on the outer side of the main support plate 16, and a first rotating part 19 connected to the output end of the first motor 8 is provided on the inner side of the main support plate 16. The first rotating component 19 includes a connecting section 20 connected to the output end of the first motor 8. The connecting section 20 is connected to the upper end of the inclined section 21, and the lower end of the inclined section 21 is connected to the parallel section 22. The inner side of the parallel section 22 is rotatably connected to the rotating ball 9 through a connecting shaft 23, and the outer side of the parallel section 22 is connected to the extension rod 10.

[0038] The bracket 7 includes a secondary support plate 26, which is perpendicular to the main support plate 16 and connected to the middle section of the main support plate 16. A second motor 27 is provided on the inner side of the secondary support plate 26. The output end of the second motor 27 is connected to a second rotating member 28 located on the outer side of the secondary support plate 26. The second rotating member 28 has the same structure as the first rotating member 19. A limiting post 29 is provided on the second rotating member 28. A limiting groove 30 is formed on the outer wall of the rotating ball 9. The limiting post 29 is located in the limiting groove 30 and can move along the length direction of the limiting groove 30.

[0039] The rotating fixture frame mechanism 2 also includes a second rotating component 31 located inside the positioning box 12; The second rotating assembly 31 includes a base 32, on which a third motor 33 and a fourth motor 35 are mounted. A worm gear 36 is located between the third motor 33 and the fourth motor 35. The third motor 33 drives the worm gear 36 to rotate. A worm wheel 37 meshes with the worm gear 36. The worm wheel 37 is rotatably mounted on a mounting frame 38. The two ends of the mounting frame 38 are respectively connected to a first connector 51 and a second connector 52 via a first extension plate 39 and a second extension plate 50. The first connector 51 is rotatably mounted on the output shaft of the third motor 33, and the second connector 52 is mounted on the output end of the fourth motor 35. Both sides of the mounting frame 38 are provided with swing rods 53. Each swing rod 53 swings as the worm gear 37 rotates. The other end of each swing rod 53 is connected to the positioning seat 6. The worm 36 and worm gear 37 are driven to move by the third motor 33, thereby driving the positioning seat 6 to move through the swing rods 53. The positioning seat 6 is movably disposed in the positioning box 12. The fourth motor 35 drives the mounting frame 38 to control the radial rotation of the worm wheel 37, and the worm wheel 37 contacts the worm 36 radially.

[0040] The system includes: The control command generation module is used to generate rotation angle commands, spray gun movement commands, and motor drive commands according to the painting requirements of automotive parts. The rotary drive control module is used to receive rotation angle commands and control the start, stop and speed of the first motor, the second motor, the third motor and the fourth motor respectively, so as to drive the rotary fixture frame mechanism to complete any angle rotation within 135 degrees up, down and left and right. The spray gun coordination control module is used to receive spray gun movement commands and control the robotic arm of the painting robot to drive the spray gun to move synchronously, and cooperate with the rotation of the rotating fixture frame mechanism to achieve full coverage spraying. The position detection feedback module is used to detect the real-time position of the rotating ball through the cooperation of the limiting groove and the limiting column, detect the swing position of the positioning seat through the position sensor on the mounting frame, and feed the position data back to the control command generation module; The fault monitoring and early warning module is used to monitor the operating status of each motor, the connection status of each connecting component, and the quality inspection data of the coating surface in real time. When abnormal operating parameters, loose connections, or coating defects are detected, a graded early warning signal is generated. The first-level early warning is for minor abnormalities, and the system automatically corrects them. The second-level early warning is for moderate abnormalities, and related actions are suspended and a notification is issued. The third-level early warning is for severe abnormalities, and an emergency shutdown is initiated, triggering the intelligent fault diagnosis unit. The intelligent fault diagnosis unit quickly locates faults based on a fault case database and machine learning algorithms.

[0041] The system also includes an AI intelligent prediction and optimization module. Based on machine learning algorithms, it analyzes historical coating data to predict the optimal rotation path of the rotating fixture frame mechanism and the best movement trajectory of the spray gun in advance, performing parameter pre-optimization before the control command generation module outputs commands. Simultaneously, this module can learn from dynamic adjustment data during the current coating process in real time, continuously iterating and optimizing the algorithm model. Through the above solutions, this invention can improve the rotation and spraying coordination accuracy of subsequent coating of similar parts by more than 30%.

[0042] The system also includes: The parameter storage and calibration module stores the optimal coating rotation parameters and spray gun movement parameters for different automotive parts, constructs a dynamic parameter database, and automatically matches and intelligently corrects similar parameters based on the features of the 3D model of the parts. It also integrates a laser interferometry calibration unit, which is linked with the position detection feedback module of the rotating fixture frame mechanism to capture the rotation angle deviation and spray gun positioning deviation in real time. The algorithm automatically compensates and calibrates the deviation, with a calibration response time of ≤50ms, an angle calibration accuracy of ±0.001°, and a spray gun positioning calibration accuracy of ±0.01mm. The linkage synchronization adjustment module is used to receive real-time position data from the position detection feedback module and deviation data from the laser interference calibration unit. It dynamically adjusts the motor drive parameters and spray gun movement parameters through a multivariable coupling algorithm to realize rotation, spraying and calibration actions. The rotation error is controlled within ±0.005° and the spraying error is within ±0.02mm. The status display and interaction module adopts a holographic projection interactive interface to display the system's operating status, motor operating parameters, rotation angle, fault warning information, and calibration compensation data in real time in a three-dimensional visualization. It supports staff to input commands, modify parameters, and confirm fault handling results through voice commands or gesture operations. It also has a fault tracing function, which can automatically retrieve the complete operating data chain of the 30 seconds before the fault occurred.

[0043] The system also includes a coating environment adaptive adjustment module, which integrates a temperature and humidity sensor, a paint viscosity monitoring unit, and an airflow velocity detection component. This module collects real-time data on temperature and humidity within the coating production line, paint viscosity at the spray gun outlet, and airflow velocity within the enclosed space. Through an AI intelligent prediction and optimization module, the environmental data is converted into parameter correction coefficients, dynamically adjusting motor drive parameters, spray gun movement speed, and paint spraying pressure. This ensures that the control system maintains a coating accuracy of no less than 98% of the original set value even within temperature and humidity fluctuations of ±5℃ / ±10% RH and paint viscosity changes of ±15%. Furthermore, this module can automatically call upon the environmental adaptation parameter library in the parameter storage calibration module according to the environmental adaptation requirements of different paint types, achieving precise matching between paint characteristics and environmental conditions.

[0044] The fault case database and AI intelligent prediction and optimization module transform fault data into a basis for preventative parameter correction, allowing for advance adjustment of relevant parameters during subsequent painting processes. This reduces the recurrence rate of similar faults by ≥80%. Furthermore, staff can manually mark fault handling results through the status display interaction module, continuously enriching the fault case database and improving the accuracy of diagnosis and prevention.

[0045] The optimal working principle of this invention is as follows: The control command generation module generates rotation angle commands, spray gun movement commands, and motor drive commands based on the painting requirements of automotive parts 3. After receiving the commands, the rotation drive control module controls the start / stop and speed of the first motor 8, the second motor 27, the third motor 33, and the fourth motor 35. The first motor 8 drives the rotating ball 9 to rotate via the first rotating component 19. At this time, the limiting post 29 remains stationary at the limiting groove 30, while the limiting groove 30 itself rotates with the rotating ball 9. When the second motor 27 drives the limiting post 29, the first motor 8 stops, and the rotating ball 9 rotates via the limiting post 29, thus achieving another movement trajectory for the rotating ball 9. The third motor 33 drives the worm gear 36 and the worm wheel 37, which in turn drive the positioning seat 6 to move via the swing arm 53. The fourth motor 35 controls the mounting frame 38 and the worm wheel 37. Radial rotation enables the rotating fixture frame 2 to rotate at all angles (up, down, left, right); the spray gun coordination control module receives instructions and controls the painting robot's robotic arm to move the spray gun 1 synchronously, coordinating with the rotation to achieve full-coverage spraying; the position detection feedback module detects and provides feedback on the real-time position of the rotating ball 9 and the positioning seat 6 through position sensors on the limit groove 30, limit post 29, and mounting frame 38; the AI ​​intelligent prediction optimization module and parameter storage calibration module, including a laser interference calibration unit and a linkage synchronization adjustment module, collaboratively optimize parameters, compensate for deviations, and ensure rotation error ±0.005° and spraying error ±0.02mm; the coating environment adaptive adjustment module collects environmental and coating data and dynamically corrects parameters; the fault monitoring and early warning module monitors in real time, provides graded early warnings when abnormalities occur, and the fault intelligent diagnosis unit locates the problem.

[0046] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A rotating device applied to a coating machine in a coating line, characterized in that: include A painting robot is installed in a fully enclosed painting production line to drive the spray gun (1) to move; The rotating fixture frame mechanism (2) is used to fix the automotive parts (3) to be painted and rotates in conjunction with the painting robot. A spray gun (1) is mounted on the robotic arm of the painting robot to perform automated painting operations on automotive parts.

2. The rotating device for use in a coating line coating machine as described in claim 1, characterized in that: The rotating fixture frame mechanism (2) includes a first rotating component (5); The first rotating component (5) includes a positioning seat (6), a bracket (7) is provided on the positioning seat (6), a first motor (8) is provided on the bracket (7), the output end of the first motor (8) is connected to the rotating ball (9) and is used to drive the rotating ball (9) to rotate. The rotating ball (9) is connected to the positioning frame (11) through the extension rod (10), and the positioning frame (11) is used to position the automotive part (3).

3. The rotating device for use in a coating line coating machine as described in claim 2, characterized in that: The positioning seat (6) is set inside the positioning box (12), the positioning box (12) has an opening (13) for the extension rod (10) to move, and the positioning box (12) is provided with a door (15). The bracket (7) includes a main support plate (16), which is connected to the positioning seat (6). A reinforcing plate (17) is provided at the angle between the main support plate (16) and the positioning seat (6). The first motor (8) is provided on the outer side of the main support plate (16), and the inner side of the main support plate (16) has a first rotating part (19) connected to the output end of the first motor (8). The first rotating component (19) includes a connecting section (20) connected to the output end of the first motor (8). The connecting section (20) is connected to the upper end of the inclined section (21), the lower end of the inclined section (21) is connected to the parallel section (22), the inner side of the parallel section (22) is rotatably connected to the rotating ball (9) through a connecting shaft (23), and the outer side of the parallel section (22) is connected to the extension rod (10).

4. The rotating device for use in a coating line coating machine as described in claim 3, characterized in that: The bracket (7) includes a secondary support plate (26), which is perpendicular to the main support plate (16) and connected to the middle section of the main support plate (16). A second motor (27) is provided on the inner side of the secondary support plate (26). The output end of the second motor (27) is connected to a second rotating component (28) located on the outer side of the secondary support plate (26). The second rotating component (28) has the same structure as the first rotating component (19). A limiting post (29) is provided on the second rotating component (28). A limiting groove (30) is opened on the outer wall of the rotating sphere (9). The limiting post (29) is located in the limiting groove (30) and can move along the length direction of the limiting groove (30).

5. The rotating device for use in a coating line coating machine as described in claim 4, characterized in that: The rotating fixture frame mechanism (2) also includes a second rotating component (31) located inside the positioning box (12). The second rotating assembly (31) includes a base (32), on which a third motor (33) and a fourth motor (35) are provided. A worm gear (36) is provided between the third motor (33) and the fourth motor (35). The third motor (33) is used to drive the worm gear (36) to rotate. A worm wheel (37) is provided on the worm gear (36) and meshes with it. The worm wheel (37) is rotatably mounted on a mounting frame (38). The two ends of the mounting frame (38) are respectively connected to a first connector (51) and a second connector (52) through a first extension plate (39) and a second extension plate (50). The first connector (51) is rotatably sleeved on the output shaft of the third motor (33), and the second connector (52) is sleeved on the output end of the fourth motor (35). The mounting frame (38) is provided with swing rods (53) on both sides. Each swing rod (53) swings with the rotation of the worm gear (37). The other end of each swing rod (53) is connected to the positioning seat (6). The worm (36) and worm gear (37) are driven to move by the third motor (33), thereby driving the positioning seat (6) to move through the swing rods (53). The positioning seat (6) is movably set in the positioning box (12). The fourth motor (35) drives the mounting frame (38) to control the radial rotation of the worm wheel (37), and the worm wheel (37) contacts the worm (36) radially.

6. A control system for a coating machine used in a coating line, the system comprising: The control command generation module is used to generate rotation angle commands, spray gun movement commands, and motor drive commands according to the painting requirements of automotive parts. The rotary drive control module is used to receive rotation angle commands and control the start, stop and speed of the first motor, the second motor, the third motor and the fourth motor respectively, so as to drive the rotary fixture frame mechanism to complete any angle rotation within 135 degrees up, down and left and right. The spray gun coordination control module is used to receive spray gun movement commands and control the robotic arm of the painting robot to drive the spray gun to move synchronously, and cooperate with the rotation of the rotating fixture frame mechanism to achieve full coverage spraying. The position detection feedback module is used to detect the real-time position of the rotating ball through the cooperation of the limiting groove and the limiting column, detect the swing position of the positioning seat through the position sensor on the mounting frame, and feed the position data back to the control command generation module; The fault monitoring and early warning module is used to monitor the operating status of each motor, the connection status of each connecting component, and the quality inspection data of the coating surface in real time. When abnormal operating parameters, loose connections, or coating defects are detected, a graded early warning signal is generated; the first-level early warning is for minor abnormalities, and the system automatically corrects them; the second-level early warning is for moderate abnormalities, and related actions are suspended and a notification is issued. A Level 3 warning indicates a serious anomaly, triggering an emergency shutdown and the intelligent fault diagnosis unit. The intelligent fault diagnosis unit quickly locates the fault based on a fault case database and machine learning algorithms.

7. The control system for a coating machine in a coating line according to claim 6, characterized in that, The system also includes an AI intelligent prediction and optimization module, which, based on machine learning algorithms, analyzes historical coating data to predict in advance the optimal rotation path of the rotating jig frame mechanism and the best movement trajectory of the spray gun, and pre-optimizes parameters before the control command generation module outputs commands; at the same time, the module can learn the dynamic adjustment data in the current coating process in real time and continuously iterate and optimize the algorithm model.

8. The control system for a coating machine in a coating line according to claim 7, characterized in that, The system also includes: The parameter storage and calibration module stores the optimal coating rotation parameters and spray gun movement parameters for different automotive parts, constructs a dynamic parameter database, and automatically matches and intelligently corrects similar parameters based on the features of the 3D model of the parts. It also integrates a laser interferometry calibration unit, which is linked with the position detection feedback module of the rotating fixture frame mechanism to capture the rotation angle deviation and spray gun positioning deviation in real time. The algorithm automatically compensates and calibrates the deviation, with a calibration response time of ≤50ms, an angle calibration accuracy of ±0.001°, and a spray gun positioning calibration accuracy of ±0.01mm. The linkage synchronization adjustment module is used to receive real-time position data from the position detection feedback module and deviation data from the laser interference calibration unit. It dynamically adjusts the motor drive parameters and spray gun movement parameters through a multivariable coupling algorithm to realize rotation, spraying and calibration actions. The rotation error is controlled within ±0.005° and the spraying error is within ±0.02mm. The status display and interaction module adopts a holographic projection interactive interface to display the system's operating status, motor operating parameters, rotation angle, fault warning information, and calibration compensation data in real time in a three-dimensional visualization. It supports staff to input commands, modify parameters, and confirm fault handling results through voice commands or gesture operations. It also has a fault tracing function, which can automatically retrieve the complete operating data chain of the 30 seconds before the fault occurred.

9. The control system for a coating machine in a coating line according to claim 8, characterized in that, The system also includes a coating environment adaptive adjustment module, which integrates a temperature and humidity sensor, a paint viscosity monitoring unit, and an airflow velocity detection component. It collects temperature and humidity data, paint viscosity data at the spray gun outlet, and airflow velocity data in the enclosed space in real time. By working with an AI intelligent prediction and optimization module, the environmental data is converted into parameter correction coefficients, and the motor drive parameters, spray gun movement speed, and paint spraying pressure are dynamically adjusted. This ensures that the control system maintains a coating accuracy of no less than 98% of the original set value within a temperature and humidity fluctuation range of ±5℃ / ±10% RH and a paint viscosity change range of ±15%.

10. The control system for a coating machine in a coating line according to claim 9, characterized in that, The fault case database and AI intelligent prediction and optimization module transform fault data into a basis for preventive parameter correction, allowing for advance adjustment of relevant parameters during subsequent painting processes.

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