Car body self-overturning paint spraying and baking room

Abstract

The invention relates to the technical field of vehicle body manufacturing, in particular to a vehicle body self-overturning paint spraying and baking booth which comprises a base, a tool frame and a multi-shaft driving mechanism, a bearing platform is arranged on the base, and the bearing platform and an adjusting cylinder form an adjustable supporting structure through a rotating lug and an inclined supporting rod and is used for controlling the tilting angle of the tool frame. A fixed shaft seat is arranged at one end of the tool frame, and a multi-shaft driving mechanism is arranged at the other end. The multi-shaft driving mechanism comprises a transmission box, a shaft disc seat, an overturning working disc and a damping locking assembly, and the auxiliary movable shaft and the main shaft rod are driven by a first driving motor and a second driving motor correspondingly, so that horizontal rotation and longitudinal overturning of a workpiece are achieved. The overturning working disc is in meshed connection with the fluted disc through a transmission shaft to form a multi-shaft linkage transmission structure; the damping locking assembly is matched with the rough surface of the bottom face of the main shaft rod through the damping shaft disc, and physical locking force is provided. Multi-angle automatic overturning and posture locking of the vehicle body are achieved, and spraying consistency, safety and the automation level are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle body manufacturing, in particular to a vehicle body self-overturning paint spraying and baking house. BACKGROUND

[0002] With the development of the automobile industry and automatic spraying technology, the requirements for flexible adjustment of the working posture and process consistency of the vehicle body in the surface treatment process such as paint spraying and baking are increasingly improved. In the traditional paint spraying and baking house, the vehicle body is usually positioned and operated through a single shaft or a fixed support, which has limited overturning capacity and inconvenient angle adjustment, and is difficult to meet the spraying requirements of complex curved surfaces or multiple surface directions, which may easily cause problems such as spraying dead angles or uneven film thickness, thereby affecting the quality of finished products.

[0003] To solve the problem of some spraying dead angles, some devices have introduced simple overturning mechanisms, but the existing overturning devices still have the following main technical defects: Insufficient overturning degrees and inaccurate angle control: most of the existing technologies use single-shaft electric overturning mechanisms, which cannot realize accurate posture adjustment of the vehicle body in multiple directions and with high degrees of freedom, and the overturning angle adjustment relies on manual intervention or limiting devices, which is difficult to realize automatic control and high-consistency spraying.

[0004] Poor stability during overturning: the existing overturning structure lacks effective posture stabilization and locking devices, and after overturning to the target angle, the workpiece is easy to move slightly due to inertia or impact of the spraying equipment, which affects the spraying precision, especially for vehicle models with asymmetric gravity centers, there is a high risk of posture drift.

[0005] Low intelligentization of the control system and slow feedback response: although some devices are equipped with control modules, they are mostly semi-automatic, lack high-integration-degree sensing feedback systems and closed-loop adjustment capabilities, and cannot realize intelligent adjustment of the overturning rhythm and locking logic according to the state of the vehicle body, resulting in low operation efficiency and poor process reliability.

[0006] Therefore, it is urgent to provide a vehicle body self-overturning paint spraying and baking device with multi-axis linkage driving, posture locking stability and high automation, to meet the requirements of modern spraying production lines for flexibility, high precision and high efficiency. SUMMARY

[0007] The present application aims to solve the technical problems of limited spraying angle, unstable overturning action, frequent manual intervention and low automation in the existing vehicle body paint spraying and baking process, and provides a vehicle body self-overturning paint spraying and baking house with reasonable structure, stable overturning, accurate control and multi-degree-of-freedom adjustment capability.

[0008] Through the technical scheme of the present application, not only the free adjustment of the overturning angle of the vehicle body and the multi-station spraying can be realized, but also the spraying consistency, safety and automation level can be significantly improved through the cooperative control of the damping locking assembly and the automatic control system.

[0009] To achieve the above object, the present application provides the following technical scheme, and has the following technical effects: A vehicle body self-overturning paint spraying and baking house, comprising: a base, a tooling rack and a multi-axis driving mechanism, the surface of the base is provided with a bearing platform, one end of the bearing platform is rotatably connected with a rotating lug fixed to the surface of the base, the bottom surface of the bearing platform is slidably installed with an inclined support rod, and the surface of the inclined support rod is movably connected with an adjusting cylinder, the other end of the adjusting cylinder is rotatably installed on the surface of the base, the tooling rack is rotatably installed on the surface of the bearing platform, and one end of the surface of the tooling rack is fixedly installed with a fixed shaft seat, and the other end of the surface of the tooling rack is fixed with the multi-axis driving mechanism. The surface of the base is provided with the bearing platform, one end of the bearing platform is rotatably connected with the base through the rotating lug structure, the bottom is slidably installed with the inclined support rod, and the bearing platform is connected with the base through the adjusting cylinder, and the structure forms a flexible and adjustable support system, the inclination angle of the bearing platform is controlled through the adjusting cylinder, so that the requirements of different workpiece centers of gravity and postures are met, and the stability and universality of the whole machine are improved.

[0010] The tooling rack is rotatably installed on the surface of the bearing platform through a rotating shaft mode, one end is provided with the fixed shaft seat, and the other end is installed with the multi-axis driving mechanism, and the layout facilitates the driving structure and the positioning structure to bear different functions respectively, and improves the modular design capability and disassembly convenience of the equipment.

[0011] The overturning workbench is connected to the shaft disc seat through the bearing frame, and is driven to the gear disc through the power chain composed of the transmission shaft and the main shaft rod; the auxiliary driving shaft is driven to rotate the shaft disc seat through the synchronous belt, and the combination structure of the gear disc and the transmission shaft ensures the stability of force transmission in the overturning process, and eliminates the loss of control or sliding caused by unbalanced load in the overturning process.

[0012] The surface of the bearing platform is provided with a rotating disc seat for driving the tooling rack to rotate, and the rotating disc seat adopts a worm driving assembly; the worm driving structure has self-locking property and high transmission ratio, which is beneficial to the stable rotation control of the heavy tooling rack and prevents the position from deviating due to excessive rotation inertia.

[0013] The overturning workbench and the fixed shaft seat are located on the same axis, and the opposite surfaces are provided with tooling clamps; the symmetrical arrangement facilitates clamping vehicle workpieces, improves the clamping stability, reduces the shaking during overturning, and improves the consistency of the spraying quality.

[0014] The shaft disc seat and the main shaft rod are coaxially arranged, the axis of the main shaft rod is perpendicular to the surface of the transmission box, and the auxiliary driving shaft is connected with the shaft disc seat through the synchronous belt; the "vertical + horizontal" double-axis independent driving is realized, a separated driving system is formed, which is helpful to reduce the system coupling interference, improve the stability and flexible control capability of the driving response.

[0015] The multi-axis drive mechanism comprises a transmission box, an axle disc seat, a turnover workbench and a damping locking assembly arranged inside the transmission box, the bottom surface of the transmission box is provided with a first drive motor and a second drive motor, the axle disc seat is rotationally installed on the surface of the transmission box, and the top surface of the axle disc seat is fixedly provided with a bearing frame arranged opposite to the fixed axle seat, the turnover workbench is rotationally installed on the surface of the bearing frame, and one side of the turnover workbench is fixedly provided with a gear disc, the surface of the axle disc seat is provided with a rotatable transmission shaft, the bottom surface of the axle disc seat is rotationally provided with a main shaft rod inside the transmission box, the two ends of the main shaft rod are respectively engaged with the output end of the second drive motor and the bottom end of the transmission shaft, the top end of the transmission shaft is engaged with the surface of the gear disc, the inside of the transmission box is rotationally provided with a secondary drive shaft, the two ends of the secondary drive shaft are respectively in transmission connection with the output end of the first drive motor and the surface of the axle disc seat, and the damping locking assembly is used for contacting the bottom surface of the main shaft rod to improve the rotation damping of the main shaft rod and rotationally locking the main shaft rod.

[0016] The multi-axis drive mechanism comprises a transmission box, an axle disc seat, a turnover workbench and an internal damping locking assembly, the bottom surface of the transmission box is provided with a first drive motor and a second drive motor, and the double-motor configuration realizes independent shaft drive, can realize horizontal rotation and longitudinal turnover respectively, and guarantees turnover precision and angle control ability.

[0017] Preferably, one end of the inclined support rod is in sliding connection with the surface of the support platform, and the other end is rotationally installed on the surface of the base, the base and the support platform are movably connected with a connecting rod support rod, the connecting rod support rod is a two-section connecting rod structure, and is used for improving the deflection stability of the support platform.

[0018] The inclined support rod is in sliding connection with the support platform, the adjusting cylinder is in rotational connection with the base, and the base and the support platform are connected with a two-section connecting rod support rod; the structure can form a three-point support structure, improve the structural stability of the support platform during tilting, reduce vibration and deviation, and ensure the linearity and smoothness of the turnover process.

[0019] Preferably, the surface of the support platform is provided with a rotary disc seat for driving the rotary motion of the tool holder, and the rotary disc seat is driven by a worm drive assembly.

[0020] Preferably, the turnover workbench and the fixed axle seat are located on the same axis, and the turnover workbench and the fixed axle seat are provided with tool assemblies for positioning and fixing the vehicle body on the opposite surfaces.

[0021] Preferably, the axle disc seat and the main shaft rod are located on the same axis, and the axis of the main shaft rod is perpendicular to the surface of the transmission box, the axis of the turnover workbench is parallel to the surface of the transmission box, and the top end of the secondary drive shaft is sleeved with a synchronous belt on the surface of the axle disc seat, for transmission between the secondary drive shaft and the axle disc seat.

[0022] Preferably, the damping locking assembly comprises a support rod, a lever and a driving rod fixed to the inner side of the transmission box, one end of the support rod is fixed to the bottom surface of the transmission box, the lever is rotatably installed on the bottom surface of the support rod, one end of the lever is movably connected with the output end of the driving rod and the other end movably connects with a damping shaft disc, the damping shaft disc is arranged vertically to the surface of the transmission box and is arranged opposite to the bottom surface of the main shaft rod.

[0023] The damping locking assembly comprises a support rod, a lever, a driving rod and a damping shaft disc, the damping shaft disc is arranged vertically and can move up and down; The damping shaft disc is opposite to the bottom surface of the main shaft rod, and the surfaces of the damping shaft disc and the main shaft rod are rough surface structures; the friction is improved through rough surface treatment, so that the locking effect is more stable and reliable, and it is ensured that there is no slight angle deviation during the spraying process, and the consistency of finished products is improved.

[0024] Preferably, the top surface of the damping shaft disc is opposite to the bottom surface of the main shaft rod, and the opposite surfaces are rough surfaces, and the damping shaft disc can move vertically to the surface of the transmission box.

[0025] Preferably, the automatic control system further comprises: A controller module is used for receiving user input or preset instructions; A sensor assembly is installed on the turnover workbench, the main shaft rod and the tool holder respectively, and is used for monitoring the turnover angle, the load state and the vehicle body position in real time; A driving control circuit is electrically connected with the first driving motor and the second driving motor, and is used for accurately controlling the motor speed and starting and stopping according to the signal of the controller; A damping control unit is connected with the driving rod, and is used for controlling the opening and closing actions of the damping shaft disc; A feedback loop is used for feeding back the states of each action unit to the controller in real time to realize closed-loop control and automatic adjustment and locking of the turnover posture.

[0026] The controller module executes the turnover process and posture strategy; the sensor collects the tool holder position, the turnover angle and the load in real time; the driving circuit accurately drives the motor according to the control signal; the damping control unit controls the opening and closing of the locking mechanism; and the feedback loop realizes closed-loop adjustment of the system state; The whole control system realizes multi-degree-of-freedom and whole-process automatic control, significantly improves the precision, efficiency and safety of the turnover operation, and adapts to the flexible spraying production demand.

[0027] The beneficial effects obtained by the present application are: 1. In the application, through the linkage structure configuration of the multi-axis driving mechanism, combined with the independent driving mode of the first driving motor and the second driving motor, the horizontal rotation and longitudinal overturning of the vehicle body are realized, which can adapt to the spraying requirements of different parts, effectively avoid the dead angle of spraying, adopt high-precision transmission shaft, tooth disc meshing structure, and multi-point adjusting mechanism of bearing platform and supporting rod, combined with the automatic control system, so that the overturning angle adjusting process has good linear control characteristics and repeatability, and meets the intelligent manufacturing demand.

[0028] 2. In the application, the damping locking assembly is arranged, combined with the rough surface crimping structure of the damping shaft disc and the main shaft rod, which can physically lock the overturning state after overturning, avoid the posture change due to vibration or gravity center deviation in the spraying process, and improve the structural stability and operation safety in the spraying stage.

[0029] 3. In the application, the system integrated controller, angle sensor, load monitoring and feedback control loop can intelligently determine and adjust the start-stop and locking actions of each motor according to the vehicle body posture and spraying process requirements, realize automatic control in the whole process, effectively reduce manual intervention, and improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the overall structure schematic diagram of an embodiment of the application; Figure 2 It is the tool holder surface structure schematic diagram of an embodiment of the application; Figure 3 It is the base surface structure schematic diagram of an embodiment of the application; Figure 4 It is the multi-axis driving mechanism structure schematic diagram of an embodiment of the application; Figure 5 It is the transmission box internal structure schematic diagram of an embodiment of the application; Figure 6 It is the second driving motor and overturning work disc transmission structure schematic diagram of an embodiment of the application; Figure 7 It is the first driving motor and shaft disc seat structure schematic diagram of an embodiment of the application; Figure 8 It is the damping locking assembly installation structure schematic diagram of an embodiment of the application.

[0031] Reference signs: 100, base; 110, bearing platform; 120, connecting rod supporting rod; 111, rotating lug; 112, inclined supporting rod; 113, adjusting cylinder; 200, tool holder; 210, fixed shaft seat; 300, multi-axis driving mechanism; 310, transmission box; 320, shaft disc seat; 330, turnover work disc; 340, damping locking assembly; 311, first driving motor; 312, second driving motor; 321, bearing frame; 322, transmission shaft; 323, main shaft rod; 324, auxiliary driving shaft; 331, toothed disc; 341, supporting rod; 342, lever; 343, driving rod; 344, damping disc. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be explained that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0033] It is understood that the above description is only exemplary and is not intended to limit the scope of the present application.

[0034] Some embodiments of the present application provide a vehicle body self-turnover paint spraying and baking house.

[0035] In combination with Figures 1 to 8 As shown in the drawings, the vehicle body self-turnover paint spraying and baking house provided by the present application comprises a base 100, a tooling frame 200 and a multi-axis driving mechanism 300. The base 100 is the installation base platform of the present application, and a bearing platform 110 is fixedly arranged on the surface of the base 100. One end of the bearing platform 110 is rotatably connected with the base 100 through a rotating lug 111, and is used to provide the tilting support of the tooling frame 200. A diagonal bracing rod 112 is slidably connected to the bottom surface of the bearing platform 110. One end of the diagonal bracing rod 112 is slidably connected with the bearing platform 110, and the other end is rotatably connected with the base 100 through an adjusting cylinder 113. A connecting rod bracing rod 120 is movably connected between the base 100 and the bearing platform 110. The connecting rod bracing rod 120 is a two-section connecting rod structure, and is used to improve the tilting stability of the bearing platform 110. The adjusting cylinder 113 can be a hydraulic cylinder or an electric push rod, and is used to control the extension and retraction of the diagonal bracing rod 112, so as to finely adjust the tilting angle of the bearing platform 110. The tooling frame 200 is rotatably installed at the other end of the bearing platform 110. The tooling frame 200 is provided with a fixed shaft seat 210 for positioning and supporting the vehicle body. The multi-axis driving mechanism 300 is fixedly installed at the other end of the tooling frame 200, and is used to realize the multi-degree-of-freedom turnover of the vehicle body.

[0036] Multi-axis driving mechanism 300 includes transmission box 310, shaft disc seat 320, turnover workbench 330 and internal damping locking assembly 340. Transmission box 310 is respectively provided with first driving motor 311 and second driving motor 312 at the bottom, which are respectively used for driving auxiliary shaft 324 and main shaft rod 323, so as to realize horizontal rotation and longitudinal overturning of turnover workbench 330. Shaft disc seat 320 is rotatably installed on the surface of transmission box 310, and the top surface is provided with bearing frame 321 which is arranged opposite to fixed shaft seat 210 and used for supporting turnover workbench 330 on both sides. Turnover workbench 330 is installed on bearing frame 321 through bearings, and one side is fixedly provided with gear disc 331. Transmission shaft 322 is arranged in shaft disc seat 320, and the bottom end is engaged with main shaft rod 323 for transmission, and the top end is engaged with gear disc 331. The bottom end of main shaft rod 323 is connected with the output end of second driving motor 312, so as to realize the longitudinal overturning action of turnover workbench 330. Auxiliary shaft 324 is connected with the output end of first driving motor 311, and is driven by synchronous belt transmission between shaft disc seat 320, so as to realize the horizontal rotation of the whole tool frame 200, which is convenient for adjusting the paint spraying angle.

[0037] Damping locking assembly 340 is used for keeping main shaft rod 323 stable during spraying and preventing unintended overturning. The assembly includes support rod 341, lever 342, driving rod 343 and damping shaft disc 344. Support rod 341 is fixedly installed in transmission box 310, lever 342 is rotatably installed at the bottom of support rod 341, one end is connected with the output end of driving rod 343, and the other end is connected with damping shaft disc 344. Damping shaft disc 344 is arranged perpendicular to the surface of transmission box 310, the top surface is arranged opposite to the bottom surface of main shaft rod 323, and both are rough surface structures to improve the contact friction. Through the control of driving rod 343, damping shaft disc 344 can be lifted or pressed in the vertical direction, so as to realize the locking and release of main shaft rod 323.

[0038] Further, in order to realize full-automatic control and improve the overturning precision, the application further sets an automatic control system, and the components thereof include: Controller module: central control unit (such as PLC or embedded microcontroller), used for receiving the information such as the overturning angle set by the user and the spraying sequence instruction; Sensor assembly: angle sensor, position sensor and load sensor are arranged at the key positions of turnover workbench 330, main shaft rod 323 and tool frame 200, which are used for monitoring the rotation angle, vehicle body balance and fixed state in real time; Driving control circuit: connected with first driving motor 311 and second driving motor 312 respectively, which accurately adjusts the motor output according to the controller instruction, so as to realize accurate positioning; Damping control unit: connected with driving rod 343, which realizes the opening and closing of main shaft rod 323 by controlling the lifting and pressing of damping shaft disc 344; Feedback loop: Real-time feedback of flipping action, positioning state and load state to the controller to form a closed-loop control, improve system stability and safety.

[0039] The automatic control system ensures the smoothness, stability and controllability of the turning process of the tool holder 200, avoids manual intervention, and significantly improves the efficiency and consistency of the paint baking operation.

[0040] The working principle and use process of the present application are as follows: The vehicle body self-turning paint baking house provided by the present application realizes accurate positioning, multi-degree-of-freedom turning and high stability locking of the vehicle body during the paint baking operation by constructing a multi-axis driving structure and a self-adaptive bearing support, and cooperating with an automatic control system, to adapt to the paint spraying requirements at different positions and angles, and improve the paint spraying quality and efficiency.

[0041] 1. Bearing platform 110 adjustment and angle guiding mechanism: The bearing platform 110 on the base 100 is supported by rotating ears 111, and the inclination angle thereof is adjusted by inclined struts 112 and adjustment cylinders 113, so as to effectively improve the controllability and operation adaptability of the overall deflection angle of the tool holder 200.

[0042] 2. Double-axis driving to realize bidirectional turning of the tool holder 200: The first driving motor 311 and the second driving motor 312 are arranged in the multi-axis driving mechanism 300, which respectively control the horizontal rotation (driven by the secondary driving shaft 324) of the tool holder 200 and the longitudinal turning (driven by the main shaft 323) of the turning workbench 330. Through the meshing transmission of the transmission shaft 322 and the toothed disc 331, the attitude adjustment of the vehicle body workpiece is realized without dead angle.

[0043] 3. Damping locking mechanism to ensure operation stability: The damping locking assembly 340 physically dampens and locks the main shaft 323 at critical moments, especially during the paint spraying process, to avoid turning angle deviation caused by gravity or motor inertia, thereby improving the operation stability and safety.

[0044] 4. Closed-loop adjustment of automatic control system: The controller built-in the system adjusts the driving motor action and the locking mechanism state in real time according to the turning angle, vehicle body position and load state and other information collected by the sensor, realizes intelligent control and action synchronization in the whole process.

[0045] 5. Motion trajectory analysis in each turning process (1) Horizontal rotation control (the shaft disc seat 320 is rotated by the secondary driving shaft 324): The main shaft 323 and the transmission shaft 322 need to be controlled by the second driving motor 312 through program control to make the main shaft 323 rotate a certain angle, so as to eliminate the revolution deviation of the transmission shaft 322 following the rotation of the shaft disc seat 320; the whole tool holder rotates horizontally around the fixed shaft seat 210, but does not drive longitudinal turning.

[0046] (2) Longitudinal overturning control (drive the transmission shaft 322 by the main shaft rod 323, and then drive the gear disc): The shaft disc seat 320 is static, and only the work disc 330 rotates around the main shaft axis; the vehicle body is overturned in the vertical plane, and the spraying angle range is improved; the horizontal rotation mechanism does not move, and does not interfere with each other.

[0047] The design advantage of this setting is: avoid long transmission chain, improve structural compactness; avoid the space interference caused by the coincidence of the secondary moving shaft and the main shaft rod axis; realize the meshing of the gear disc at one end of the work disc, so that the control center of gravity is close to the load side, and the load balance and control sensitivity are improved; the shaft disc seat provides middle support for the transmission shaft, and improves the rotation stability.

[0048] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A self-rotating paint spraying and baking booth for car bodies, characterized in that, include: The base (100), the tooling frame (200), and the multi-axis drive mechanism (300) are provided with a support platform (110) on the surface of the base (100), the tooling frame (200) is rotatably mounted on the surface of the support platform (110), a fixed shaft seat (210) is fixedly mounted on one end of the surface of the tooling frame (200), and the multi-axis drive mechanism (300) is fixed to the other end of the surface of the tooling frame (200). The multi-axis drive mechanism (300) includes a transmission box (310), a shaft plate seat (320), a tilting work plate (330), and a damping locking assembly (340) arranged inside the transmission box (310). The shaft plate seat (320) is rotatably mounted on the surface of the transmission box (310), the tilting work plate (330) is rotatably mounted on the surface of the bearing bracket (321), and the damping locking assembly (340) is used to contact the bottom surface of the main shaft (323) to increase the rotational damping of the main shaft (323) and to lock the rotation of the main shaft (323).

2. The self-rotating paint booth for car bodies according to claim 1, characterized in that, One end of the support platform (110) is rotatably connected to a rotating lug (111) fixed to the surface of the base (100). A diagonal brace (112) is slidably installed on the bottom surface of the support platform (110), and an adjusting cylinder (113) is movably connected to the surface of the diagonal brace (112). The other end of the adjusting cylinder (113) is rotatably installed on the surface of the base (100). One end of the diagonal brace (112) is slidably connected to the surface of the support platform (110), and the other end is rotatably installed on the surface of the base (100). A connecting rod (120) is movably connected between the base (100) and the support platform (110). The connecting rod (120) is a two-section connecting rod structure used to improve the deflection stability of the support platform (110).

3. The self-rotating paint booth for car bodies according to claim 1, characterized in that, The surface of the support (110) is provided with a turntable seat for driving the tooling frame (200) to rotate, and the turntable seat is driven by a worm gear drive assembly.

4. The self-rotating paint booth for car bodies according to claim 1, characterized in that, The bottom surface of the transmission box (310) is provided with a first drive motor (311) and a second drive motor (312). An auxiliary drive shaft (324) is rotatably installed on the inner side of the transmission box (310). The two ends of the auxiliary drive shaft (324) are respectively connected to the output end of the first drive motor (311) and the surface of the shaft plate seat (320). A rotatable transmission shaft (322) is arranged through the surface of the shaft disc seat (320). A bearing bracket (321) arranged on the opposing fixed shaft seat (210) is fixedly installed on the top surface of the shaft disc seat (320). A main shaft (323) located inside the transmission box (310) is rotatably installed on the bottom surface of the shaft disc seat (320). The two ends of the main shaft (323) are respectively engaged with the output end of the second drive motor (312) and the bottom end of the transmission shaft (322) for transmission.

5. The self-rotating paint booth for car bodies according to claim 1, characterized in that, The flip plate (330) and the fixed axis seat (210) are located on the same axis, and the flip plate (330) and the fixed axis seat (210) are provided with tooling components for positioning and fixing the vehicle body on their opposite sides.

6. The self-rotating paint booth for car bodies according to claim 4, characterized in that, A gear disc (331) is fixedly installed on one side of the flipping work disc (330). The top end of the transmission shaft (322) meshes with the surface of the gear disc (331) for transmission. The shaft disc seat (320) and the main shaft (323) are located on the same axis, and the axis of the main shaft (323) is arranged perpendicular to the surface of the transmission box (310). The axis of the flipping work disc (330) is parallel to the surface of the transmission box (310). The top end of the auxiliary shaft (324) is fitted with a synchronous belt on the surface of the shaft disc seat (320) for transmission between the auxiliary shaft (324) and the shaft disc seat (320).

7. The self-rotating paint booth for car bodies according to claim 1, characterized in that, The damping locking assembly (340) includes a support rod (341), a lever (342), and a drive rod (343) fixed inside the transmission box (310). One end of the support rod (341) is fixed to the bottom surface of the transmission box (310), and the lever (342) is rotatably mounted on the bottom surface of the support rod (341). One end of the lever (342) is movably connected to the output end of the drive rod (343), and the other end is movably connected to a damping shaft disc (344). The damping shaft disc (344) is arranged perpendicular to the surface of the transmission box (310) and opposite to the bottom surface of the main shaft (323).

8. The self-rotating paint booth for car bodies according to claim 7, characterized in that, The top surface of the damping disc (344) and the bottom surface of the main shaft (323) are opposite each other, and the opposite surfaces are rough. The damping disc (344) can move perpendicular to the surface of the transmission box (310).

9. The self-rotating paint booth for car bodies according to claim 1, characterized in that, It also includes an automatic control system, which includes: The controller module is used to receive user input or preset commands; Sensor assemblies are respectively installed on the flip worktable (330), the main shaft (323) and the tooling frame (200) for real-time monitoring of the flip angle, load status and vehicle body position; The drive control circuit is electrically connected to the first drive motor (311) and the second drive motor (312) and is used to precisely control the motor speed and start / stop according to the signal from the controller. The damping control unit is connected to the drive rod (343) and is used to control the opening and closing action of the damping shaft disk (344); The feedback loop is used to feed back the status of each action unit to the controller in real time for closed-loop control, so as to realize the automatic adjustment and locking of the flipping posture.

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