Automobile automatic spraying jig

Abstract

The utility model discloses an automatic spraying jig of car relates to the technical field of car manufacturing, wherein, the automatic spraying jig of car includes mounting bracket, first limit mechanism, second limit mechanism, locking mechanism and operating mechanism, and first limit mechanism is connected with mounting bracket, and second limit mechanism includes limit component and first elastic return part, and locking mechanism includes locking component and second elastic return part. The utility model discloses technical scheme through adopting the operating mechanism specially designed for the robot holding, and the accurate grabbing, positioning and control of robot are convenient, thereby realize the automatic opening and closing of spare box cover, and the demand of complete adaptation robot automatic spraying process, and through adopting first limit mechanism and second limit mechanism and forming double limit structure, ensure that the jig is steady fixed in the spraying process, avoid the phenomenon of uneven spraying or missing spraying caused by shaking or deviation, and improve the coating quality.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to an automatic automobile painting fixture. Background Technology

[0002] In automobile manufacturing, the painting process is a crucial step affecting the overall appearance quality of the vehicle. To achieve complete painting of interior areas (such as the trunk lid), specialized fixtures are typically installed before painting to control the opening and closing of the trunk lid and ensure smooth painting. With the development of industrial robot technology, more and more automobile manufacturers are adopting automated robotic painting processes to improve painting efficiency, enhance paint consistency, and reduce manual labor intensity. However, traditional manual painting support fixtures lack structural compatibility with robot operating systems, making them unsuitable for automated robotic operation and failing to meet the demands of current automated painting production. Utility Model Content

[0003] The main purpose of this utility model is to propose an automatic automotive painting fixture, which aims to solve the problem that traditional fixtures cannot be adapted to automated robotic operations.

[0004] To achieve the above objectives, this utility model proposes an automatic automotive painting fixture, which includes:

[0005] Mounting rack;

[0006] A first limiting mechanism is connected to the mounting bracket and can engage with a slot on the trunk lid.

[0007] The second limiting mechanism includes a limiting component and a first elastic reset member. The limiting component is slidably engaged with the mounting bracket so that the limiting component can engage with the groove on the trunk lid. Both the limiting component and the mounting bracket are connected to the first elastic reset member so that the first elastic reset member can restrict the separation of the limiting component from the groove on the trunk lid.

[0008] A locking mechanism includes a locking component and a second elastic reset member. The locking component is slidably engaged with the mounting bracket so that it can engage with the limiting component. Both the locking component and the mounting bracket are connected to the second elastic reset member so that the second elastic reset member can restrict the separation of the locking component from the limiting component.

[0009] An operating mechanism is rotatably mounted on the mounting frame and is used for the robot to hold.

[0010] In one embodiment, the limiting assembly includes an operating lever and a limiting component. The limiting component is slidably engaged with the mounting bracket. The operating lever is rotatably mounted on the mounting bracket and the limiting component, so that the operating lever can drive the limiting component to separate from the groove on the trunk lid. Both the limiting component and the mounting bracket are connected to the first elastic reset member, so that the first elastic reset member can restrict the separation of the limiting component from the groove on the trunk lid.

[0011] In one embodiment, the limiting component includes a limiting member, a connecting member, and a limiting platform. The connecting member and the limiting platform are both connected to the limiting member. The mounting bracket includes an interconnected mounting plate and a support. The support has a first through hole. The limiting member slides against the wall of the first through hole. The operating lever is rotatably mounted on the mounting plate and also rotatably mounted on the connecting member, allowing the operating lever to drive the limiting member to separate from the groove on the trunk lid via the connecting member. Both the connecting member and the support are connected to a first elastic reset member, allowing the first elastic reset member to restrict the separation of the limiting member from the groove on the trunk lid via the connecting member. The limiting platform abuts against the support to restrict the limiting member from moving away from the first limiting mechanism. The first limiting mechanism is connected to the mounting plate, the locking assembly slides against the mounting plate, and the operating mechanism is rotatably mounted on the mounting plate.

[0012] In one embodiment, the operating lever includes an actuating part, a rotating part, and a locking part. The rotating part and the locking part are both connected to the actuating part. The rotating part is rotatably mounted on the mounting plate and rotatably mounted on the connecting member, so that the actuating part can drive the limiting member to separate from the groove on the trunk lid through the rotating part and the connecting member. The locking assembly can engage with the locking part.

[0013] In one embodiment, the locking assembly includes a lifting ring and a fastener. A limiting hole is provided on the snap-fit ​​portion. The mounting plate includes a plate body and a mounting frame. The mounting frame and the bracket are respectively disposed on opposite sides of the plate body. The mounting frame has a receiving cavity and a first through hole and a second through hole communicating with the receiving cavity. Both the first and second through holes are slidably engaged with the fastener. The cavity wall of the receiving cavity and the fastener are both connected to a second elastic reset member, so that the second elastic reset member can restrict the separation of the fastener from the limiting hole. The lifting ring is connected to the fastener, so that the lifting ring can drive the fastener to separate from the limiting hole. The first limiting mechanism is connected to the plate body. The operating mechanism is rotatably mounted on the plate body, and the rotating part is rotatably mounted on the plate body.

[0014] In one embodiment, the limiting component further includes a guide member, which is connected to the mounting plate and is spaced apart from the bracket. The guide member is provided with a second through hole for the limiting component to pass through.

[0015] In one embodiment, the operating mechanism includes a rotating shaft and a handle. The rotating shaft is rotatably mounted on the mounting frame, and the handle is connected to the rotating shaft. The handle is used for the robot to grip. The automatic automotive painting fixture also includes a fixing mechanism. The fixing mechanism is connected to the mounting frame and has a limit groove. The rotating shaft can engage with the limit groove to restrict the rotating shaft from moving towards the first limit mechanism.

[0016] In one embodiment, the mounting bracket is further provided with a boss, which can abut against the rotating shaft to restrict the rotating shaft from moving away from the first limiting mechanism;

[0017] And / or,

[0018] The operating mechanism also includes a support member connected to the side of the rotating shaft away from the trunk lid, and the support member is capable of abutting against the vehicle body.

[0019] In one embodiment, the automatic automotive painting fixture further includes a positioning mechanism, which includes a first positioning post and a second positioning post. Both the first positioning post and the second positioning post are connected to the side of the mounting bracket facing the limiting component, and the first positioning post and the second positioning post are arranged at intervals. The first positioning post can engage with a first positioning hole on the trunk lid, and the second positioning post can engage with a second positioning hole on the trunk lid.

[0020] In one embodiment, the positioning mechanism further includes a reinforcing member, wherein the first positioning post and the second positioning post are both connected to the reinforcing member, and the reinforcing member is capable of abutting against the trunk lid.

[0021] In this embodiment of the invention, the mounting bracket serves as the basic support structure for the entire automatic automotive painting fixture, bearing and connecting other functional components. Both the first and second limiting mechanisms engage with the trunk lid, thereby securing the entire automatic automotive painting fixture and the trunk lid, effectively preventing the fixture from shaking or falling off during the painting process and improving the consistency of the painting quality. Specifically, the first limiting mechanism engages with a slot on the trunk lid to initially position the fixture. The second limiting mechanism includes a limiting component and a first elastic reset component, with the limiting component slidably mounted on the mounting bracket. On the frame, it can engage with the groove on the trunk lid, providing double limiting for the fixture in conjunction with the first limiting mechanism. The first elastic reset member ensures that the limiting component remains engaged under normal conditions, preventing accidental separation between the limiting component and the groove on the trunk lid, thus ensuring a secure connection between the fixture and the trunk lid. Simultaneously, under external force, the first elastic reset member can be compressed to separate the limiting component from the groove on the trunk lid, facilitating fixture disassembly. The locking mechanism includes a locking component and a second elastic reset member. The locking component and the limiting component form a linked locking structure. The second elastic reset member enables the locking component to engage with the groove on the trunk lid. Under normal conditions, the component maintains a snap-fit ​​engagement with the limiting assembly, ensuring the limiting assembly remains continuously engaged with the groove on the trunk lid. It can only be unlocked under external force, thus further tightening the limiting assembly, enhancing the overall structural stability, and preventing accidental loosening of the limiting assembly from the groove on the trunk lid due to vibration or external impact. Simultaneously, under external force, the second elastic reset component can be compressed, separating the locking assembly from the limiting assembly, thereby unlocking and facilitating the disassembly of the second limiting mechanism. The operating mechanism is specifically designed for robot gripping, enabling the robot to lift the operating mechanism from... The ability to open and close the trunk lid, along with the rotatable mounting mechanism on the mounting frame, enhances operational flexibility and adapts to various vehicle models and painting angle requirements. The automatic automotive painting fixture features a simple overall structure, clear operational logic, and a quick and easy installation process. It is smaller in size, requires less cleaning time, and allows for the placement of more trolleys. Operators can quickly and easily master the installation method without complex training, significantly reducing labor intensity, improving installation efficiency and production cycle time, effectively increasing production revenue, and reducing labor and material costs for cleaning and maintenance. This realizes a new process of automated robotic painting.This utility model embodiment employs an operating mechanism specifically designed for robot gripping, facilitating precise robot grasping, positioning, and control, thereby enabling automatic opening and closing of the trunk lid and fully adapting to the requirements of automated robot painting processes. The use of a first and second limiting mechanism to form a double limiting structure ensures the fixture is firmly fixed during painting, preventing uneven or missed spraying caused by shaking or displacement, thus improving coating quality. The use of a locking component and a limiting component to form a linked locking structure prevents accidental activation and limit failure during robot grasping and painting, greatly improving the safety and reliability of the system. The use of a first and second elastic reset component allows the limiting and locking components to automatically reset after operation, simplifying the operation process. This automatic automotive painting fixture reduces manual intervention, improves operational efficiency, and is more suitable for use in automated production lines. It features a standardized, modular design, a compact structure with no dead angles, and is easy to disassemble and clean. It can be made of corrosion-resistant materials such as 304 stainless steel, maintaining good performance even under frequent cleaning conditions, significantly extending its service life and reducing maintenance costs. Furthermore, the fixture can be locally adjusted according to the trunk lid structure of different car models, exhibiting excellent compatibility and adaptability. It is suitable for various car models and multiple automated painting production lines, showing broad application prospects. By achieving automated robotic painting, reducing manual intervention, shortening changeover time, and lowering failure rates, it effectively improves the overall operating efficiency and production flexibility of painting lines, providing strong support for enterprises to reduce costs and increase efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the automatic automotive spraying fixture of this utility model;

[0024] Figure 2 This is a schematic diagram of another perspective of an embodiment of the automatic automotive spraying fixture of this utility model;

[0025] Figure 3 This is another structural schematic diagram of an embodiment of the automatic automotive spraying fixture of this utility model;

[0026] Figure 4 This is another structural schematic diagram of an embodiment of the automatic automotive spraying fixture of this utility model.

[0027] Figure 5 This is a schematic diagram of an embodiment of the locking mechanism of the automatic automotive spraying fixture of this utility model.

[0028] Explanation of icon numbers:

[0029] 100. Automatic automotive painting fixture; 1. Mounting bracket; 11. Mounting plate; 111. Plate body; 112. Mounting frame; 1121. Receiving cavity; 1122. First through hole; 1123. Second through hole; 12. Bracket; 121. First through hole; 2. First limiting mechanism; 3. Second limiting mechanism; 31. Limiting component; 311. Operating lever; 3111. Actuating part; 3112. Rotating part; 3113. Snap-fit ​​part; 31131. Limiting hole; 312. Limiting component; 3121. 3122, Connector; 3123, Limiting platform; 3124, Guide; 31241, Second through hole; 32, First elastic reset component; 4, Locking mechanism; 41, Locking assembly; 411, Lifting ring; 412, Fastener; 42, Second elastic reset component; 5, Operating mechanism; 51, Rotating shaft; 52, Handle; 53, Support component; 6, Positioning mechanism; 61, First positioning post; 62, Second positioning post; 63, Reinforcing component; 7, Fixing mechanism; 71, Limiting groove; 8, Boss.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] In automobile manufacturing, the painting process is a crucial step affecting the overall appearance quality of the vehicle. To achieve complete painting of interior areas (such as the trunk lid), specialized fixtures are typically installed before painting to control the opening and closing of the trunk lid and ensure smooth painting. With the development of industrial robot technology, more and more automobile manufacturers are adopting automated robotic painting processes to improve painting efficiency, enhance paint consistency, and reduce manual labor intensity. However, traditional manual painting support fixtures lack structural compatibility with robot operating systems, making them unsuitable for automated robotic operation and failing to meet the demands of current automated painting production.

[0035] After careful research, the applicant found that traditional jigs generally have problems such as complex structure, large size, cumbersome installation, inconvenient operation, difficult cleaning, and high maintenance costs. In addition, they lack an effective coordination mechanism with robots for grasping, positioning, and opening and closing control, which limits production efficiency and even affects the coating quality and process stability.

[0036] The main purpose of this utility model is to propose an automatic automotive painting fixture to solve the problem that traditional fixtures cannot be adapted to automated robotic operations.

[0037] Please see Figure 1 , Figure 2 and Figure 5In one embodiment of this utility model, the automatic car painting fixture 100 includes a mounting frame 1, a first limiting mechanism 2, a second limiting mechanism 3, a locking mechanism 4, and an operating mechanism 5. The first limiting mechanism 2 is connected to the mounting frame 1 and can engage with a slot on the trunk lid. The second limiting mechanism 3 includes a limiting component 31 and a first elastic reset component 32. The limiting component 31 is slidably engaged with the mounting frame 1 so that the limiting component 31 can engage with a groove on the trunk lid. Both the limiting component 31 and the mounting frame 1 are engaged with the first elastic reset component 32. 2. A connection is made so that the first elastic reset member 32 can restrict the separation of the limiting component 31 from the groove on the trunk lid; the locking mechanism 4 includes a locking component 41 and a second elastic reset member 42. The locking component 41 is slidably engaged with the mounting frame 1 so that the locking component 41 can engage with the limiting component 31. Both the locking component 41 and the mounting frame 1 are connected to the second elastic reset member 42 so that the second elastic reset member 42 can restrict the separation of the locking component 41 from the limiting component 31; the operating mechanism 5 is rotatably mounted on the mounting frame 1 and is used for the robot to hold.

[0038] In this embodiment of the invention, the mounting bracket 1 serves as the basic support structure of the entire automatic automotive painting fixture 100, bearing and connecting other functional components. The first limiting mechanism 2 and the second limiting mechanism 3 both engage with the trunk lid, thereby achieving the installation and fixation of the entire automatic automotive painting fixture 100 and the trunk lid, effectively preventing the fixture from shaking or falling off during the painting process and improving the consistency of the painting quality. Specifically, the first limiting mechanism 2 can engage with the slot on the trunk lid to initially position the fixture. The second limiting mechanism 3 includes a limiting component 31 and a first elastic reset component 32. The limiting component 31 is slidably installed on the mounting bracket 100. On the mounting bracket 1, it can engage with the groove on the trunk lid, providing double limiting for the fixture in conjunction with the first limiting mechanism 2. The first elastic reset member 32 can keep the limiting component 31 in the engaged state under normal conditions, preventing the limiting component 31 from accidentally separating from the groove on the trunk lid, thus ensuring a firm connection between the fixture and the trunk lid. At the same time, under external force, the first elastic reset member 32 can be compressed to separate the limiting component 31 from the groove on the trunk lid, thereby facilitating the removal of the fixture. The locking mechanism 4 includes a locking component 41 and a second elastic reset member 42. The locking component 41 and the limiting component 31 form a linkage locking structure, and the second elastic reset member... 42 enables the locking component 41 to maintain a snap-fit ​​engagement with the limiting component 31 under normal conditions, allowing the limiting component 31 to continuously maintain a snap-fit ​​state with the groove on the trunk lid, only unlocking under external force. This further tightens the limiting component 31, enhances the stability of the overall structure, and prevents the limiting component 31 from accidentally loosening from the groove on the trunk lid due to vibration or external impact. Simultaneously, under external force, the second elastic reset component 42 can be compressed to separate the locking component 41 from the limiting component 31, thereby unlocking and facilitating the disassembly of the second limiting mechanism 3. The operating mechanism 5 is specifically designed for robot gripping, enabling the robot to... The trunk lid can be opened or closed via the lifting mechanism 5, which is rotatably mounted on the mounting frame 1, improving operational flexibility and adapting to the needs of various vehicle models and spraying angles. The automatic automotive spraying fixture 100 features a simple overall structure, clear operational logic, and a quick and easy installation process. It is smaller in size, requires less cleaning time, and allows for the placement of more trolleys. Operators can quickly and easily master the installation method without complex training, significantly reducing labor intensity, improving installation efficiency and production cycle time, effectively increasing production revenue, and reducing labor and material costs for cleaning and maintenance. This realizes a new process of automated robotic spraying. It should be noted that the robot mentioned is an existing robot.

[0039] The technical solution of this utility model adopts an operating mechanism 5 specifically designed for robot gripping, which facilitates precise robot grasping, positioning, and control, thereby realizing the automatic opening and closing of the trunk lid, fully adapting to the needs of the robot's automatic spraying process; by using a first limiting mechanism 2 and a second limiting mechanism 3 to form a double limiting structure, it ensures that the fixture is firmly fixed during the spraying process, avoiding uneven spraying or missed spraying caused by shaking or displacement, thus improving the coating quality; by using a locking component 41 and a limiting component 31 to form a linkage locking structure, it prevents accidental contact that could lead to limit failure during robot grasping and spraying, greatly improving the safety and reliability of the system operation; by using a first elastic reset component 32 and a second elastic reset component 42, the limiting component 31 and the locking component 41 can automatically reset after the operation is completed, simplifying the process. The automated automotive painting fixture 100 features a standardized and modular design, a compact structure with no dead corners, and easy disassembly and cleaning. It can be made of corrosion-resistant materials such as 304 stainless steel, maintaining good performance even under frequent cleaning conditions, significantly extending its service life and reducing maintenance costs. Furthermore, the fixture can be locally adjusted to suit the trunk lid structure of different car models, demonstrating excellent compatibility and adaptability. It is suitable for various car models and multiple automated painting production lines, showing broad application prospects. By achieving automated robotic painting, reducing manual intervention, shortening changeover time, and lowering failure rates, it effectively improves the overall operating efficiency and production flexibility of the painting line, providing strong support for enterprises to reduce costs and increase efficiency.

[0040] Please see Figure 1 , Figure 2 and Figure 4In one embodiment, the limiting component 31 includes an operating lever 311 and a limiting member 312. The limiting member 312 is slidably engaged with the mounting bracket 1. The operating lever 311 is rotatably mounted on the mounting bracket 1 and rotatably mounted on the limiting member 312, so that the operating lever 311 can drive the limiting member 312 to separate from the groove on the trunk lid. Both the limiting member 312 and the mounting bracket 1 are connected to the first elastic reset member 32, so that the first elastic reset member 32 can restrict the separation of the limiting member 312 from the groove on the trunk lid. Specifically, both the mounting bracket 1 and the limiting member 312 are rotatably engaged with the operating lever 311. The operating lever 311 serves as a driving medium and can be operated manually or mechanically, thereby driving the limiting member 312 to separate from the groove on the trunk lid. The grooved separation on the trunk lid simplifies the manual operation process, reduces labor intensity, and eliminates the need for complex tools or forceful operation. Operators can easily complete the installation and disassembly, making it suitable for production lines with fast cycle times in automated spraying processes. The first elastic reset component 32 ensures that the limit component 312 automatically returns to its original snap-fit ​​state after the release operation, greatly improving the ease of operation and automation compatibility. It effectively prevents accidental detachment caused by vibration, impact, etc. during the spraying process, and improves the reliability and safety of the fixture during use. The operating lever 311, the limit component 312, and the first elastic reset component 32 are all independent modules, which are easy to assemble, debug, and replace, reducing maintenance time and costs. They are also easy to clean and prevent paint accumulation from affecting the function.

[0041] Please see Figure 2 and Figure 4In one embodiment, the limiting component 312 includes a limiting member 3121, a connecting member 3122, and a limiting platform 3123. Both the connecting member 3122 and the limiting platform 3123 are connected to the limiting member 3121. The mounting bracket 1 includes a mounting plate 11 and a support 12 connected to each other. The support 12 has a first through hole 121. The limiting member 3121 slides against the wall of the first through hole 121. The operating lever 311 is rotatably mounted on the mounting plate 11 and rotatably mounted on the connecting member 3122, so that the operating lever 311... 11 can drive the limiting member 3121 to separate from the groove on the trunk lid through the connector 3122. Both the connector 3122 and the bracket 12 are connected to the first elastic reset member 32, so that the first elastic reset member 32 can restrict the separation of the limiting member 3121 from the groove on the trunk lid through the connector 3122. The limiting platform 3123 can abut against the bracket 12 to restrict the limiting member 3121 from moving away from the first limiting mechanism 2. The first limiting mechanism 2 is connected to the mounting plate 11, and the locking assembly 41 slides with the mounting plate 11. The operating mechanism 5 is rotatably mounted on the mounting plate 11. Specifically, the mounting plate 11 and the bracket 12 form a fixed base structure. The limiting member 3121 slides with the first through hole 121 on the bracket 12, thereby ensuring its smooth movement in the horizontal direction. The limiting platform 3123 abuts against the bracket 12, effectively preventing the limiting member 3121 from shifting or falling out due to external force or misoperation. The overall structure enhances the stability and reliability of the limiting member 3121 during use, and the modular design of the limiting component 312 makes it easier to assemble and maintain. For standardized production, the overall structure is easy to clean and maintain, effectively reducing later maintenance costs. The operating lever 311 drives the limiting member 3121 to slide and separate via the connecting member 3122. The structure is simple, the transmission efficiency is high, and it is easy to automate control. Both the connecting member 3122 and the bracket 12 are connected to the first elastic reset member 32. Under normal conditions, the limiting member 3121 is pushed to reset, ensuring that the limiting member 3121 is always in a locked state, preventing loosening due to vibration or impact. The automatic reset function reduces manual intervention and is suitable for production scenarios with frequent disassembly and assembly. It should be noted that the first elastic reset member 32 and the second elastic reset member 42 can be springs or other existing elastic components.

[0042] According to one embodiment of the present invention, the limiting component 312 and the mounting bracket 1 can achieve sliding engagement through a guide rail and slider or a dovetail groove and dovetail block.

[0043] Please see Figures 1 to 3In one embodiment, the operating lever 311 includes an actuating part 3111, a rotating part 3112, and a locking part 3113. Both the rotating part 3112 and the locking part 3113 are connected to the actuating part 3111. The rotating part 3112 is rotatably mounted on the mounting plate 11 and is also rotatably mounted on the connecting member 3122, so that the actuating part 3111 can drive the limiting member 3121 to separate from the groove on the trunk lid via the rotating part 3112 and the connecting member 3122. The locking assembly 41 can engage with the locking part 3113. Specifically, this design integrates the three functions of operation, transmission, and locking into the operating lever 311, reducing external additional structures and making the entire fixture lighter. Convenient and compact, easy to clean and maintain, and avoids paint buildup affecting functionality, making it more suitable for use in the spraying station. The actuator 3111 facilitates manual operation, while the rotating part 3112 ensures smooth transmission and improves operational response consistency. After the limit component 31 completes positioning, the locking part 3113 engages with the locking component 41 to prevent the operating lever 311 from moving accidentally and to avoid loosening of the limit due to vibration, impact, etc., thus improving the stability and reliability of the fixture during the spraying process. The locking part 3113 can be locally adjusted according to different locking components 41. The overall structure of the operating lever 311 supports standardized production, adapts to various vehicle models and installation methods, and can be widely used in various automotive painting lines, with good prospects for expanded applications. In addition, in this embodiment, the rotating part 3112 and the mounting plate 11, and the rotating part 3112 and the connecting part 3122 can all be rotatably connected by pins, hinges, or bearings, and this embodiment does not limit this.

[0044] Please see Figure 3 and Figure 4In one embodiment, the locking assembly 41 includes a lifting ring 411 and a fastener 412. A limiting hole 31131 is provided on the snap-fit ​​portion 3113. The mounting plate 11 includes a plate body 111 and a mounting frame 112. The mounting frame 112 and the bracket 12 are respectively disposed on opposite sides of the plate body 111. The mounting frame 112 is provided with a receiving cavity 1121 and a first through hole 1122 and a second through hole 1123 respectively communicating with the receiving cavity 1121. Both the first through hole 1122 and the second through hole 1123 slide against the fastener 412. The cavity wall of the receiving cavity 1121 and the fastener 412 are both connected to the second elastic reset member 42, so that the second elastic reset member 42 can restrict the separation of the fastener 412 from the limiting hole 31131. The lifting ring 411 is connected to the fastener 412, so that the lifting ring 411 can drive the fastener 412 to separate from the limiting hole 31131. The first limiting mechanism 2 is connected to the plate body 111. The operating mechanism 5 is rotatably mounted on the plate body 111, and the rotating part 3112 is rotatably mounted on the plate body 111. Specifically, by setting The lifting ring 411 and the second elastic reset member 42 enable automatic locking and unlocking of the fastener 412. The second elastic reset member 42 pushes the fastener 412 to automatically insert into the limiting hole 31131 to achieve locking. The lifting ring 411 pulls the fastener 412 to overcome the elastic force and disengage from the limiting hole 31131, achieving quick unlocking. The entire structure can complete self-locking and unlocking without additional control devices, which is highly efficient and can effectively improve locking stability and system safety. Moreover, the structure is compact, saves space, and is conducive to production line layout optimization. The lifting ring 411 is designed for easy manual or robotic arm operation and can be integrated into the automated control system, providing good support for the intelligent upgrade of the entire painting line. The operation is intuitive and simple. Locking and unlocking actions can be completed with just one pull, saving time, reducing the frequency of manual intervention, and improving installation and disassembly efficiency. The size of the fastener 412 and the limiting hole 31131 can be adjusted according to different vehicle models. The mounting frame 112 and the bracket 12 have standardized structures, support platform applications, and can be widely used in various automotive trunk cover structures, possessing good versatility.

[0045] According to one embodiment of the present invention, the fastener 412 and the snap-fit ​​part 3113 can be snap-fitted or magnetically snap-fitted.

[0046] Please see Figures 1 to 4In one embodiment, the limiting component 312 further includes a guide 3124, which is connected to the mounting plate 11 and is spaced apart from the bracket 12. The guide 3124 has a second through hole 31241 for the limiting component 3121 to pass through. Specifically, the first through hole 121 on the bracket 12 and the second through hole 31241 on the guide 3124 work together to form a dual-point positioning, providing a clear installation path and guiding reference for the limiting component 3121. This prevents misalignment during installation, facilitates quick alignment, and makes subsequent maintenance and replacement more convenient and faster. The dual-guide structure prevents the limiting component 3121 from being misaligned during installation. During the sliding process, if there is any deviation, tilting, or shaking, the limit component 3121 is ensured to always move in a straight line, improving the accuracy and consistency of the locking action. When there are non-axial forces such as spraying vibration or robot grasping deviation, the dual guide structure can effectively distribute the force, preventing the limit component 3121 from jamming or being damaged due to uneven force, thus improving the reliability of the fixture under complex working conditions. For trunk lid structures of different thicknesses, heights, or shapes, the position of the guide component 3124 can be adjusted to adapt to ensure that the limit component 3121 can still maintain good guiding performance under various vehicle models, expanding the application range of the fixture and enhancing the system's adaptability to complex vehicle models.

[0047] Please see Figures 1 to 3In one embodiment, the operating mechanism 5 includes a rotating shaft 51 and a handle 52. The rotating shaft 51 is rotatably mounted on the mounting frame 1, and the handle 52 is connected to the rotating shaft 51 for the robot to grip. The automatic automotive painting fixture 100 also includes a fixing mechanism 7, which is connected to the mounting frame 1. The fixing mechanism 7 is provided with a limiting groove 71, and the rotating shaft 51 can engage with the limiting groove 71 to restrict the rotating shaft 51 from moving towards the first limiting mechanism 2. Specifically, the handle 52 is designed specifically for the robot gripper, facilitating precise gripping by the robotic arm, improving the robot's gripping success rate, and reducing the risk of misoperation. The rotating shaft 51 can rotate at multiple angles to adapt to the opening and closing angle requirements of the trunk lid of different vehicle models. Under the action of the limiting groove 71, the rotating shaft 51 can automatically engage in a fixed position at a preset opening and closing angle, effectively limiting the degree of freedom of the rotating shaft 51. This design avoids shaking caused by external vibrations and airflow impacts during the spraying process, ensuring the trunk lid remains stable throughout the spraying process and improving the consistency of coating quality. Operators or robots only need to rotate the rotating shaft 51 to the corresponding angle for automatic locking, eliminating the need for additional adjustments. This simplifies the operation process, improves work efficiency, and ensures consistent opening and closing angles after each installation, enhancing the repeatability of the spraying process. The cooperative design between the rotating shaft 51 and the limiting groove 71 facilitates remote robot control, enabling automated opening and closing operations. This provides a solid hardware foundation for the intelligent upgrade of the entire spraying system, improving the overall automation level of the production line. The position of the limiting groove 71 can be set according to the opening and closing angle requirements of different vehicle models, allowing the fixture to flexibly switch between multiple models and meet the needs of multi-model co-production. Furthermore, in this embodiment, the rotating shaft 51 and the mounting bracket 1 can be rotatably connected via pins, hinges, or bearings; this embodiment does not limit this.

[0048] Please see Figures 1 to 2In one embodiment, the mounting bracket 1 is further provided with a boss 8, which can abut against the rotating shaft 51 to restrict the rotating shaft 51 from moving away from the first limiting mechanism 2; and / or, the operating mechanism 5 also includes a support member 53, which is connected to the side of the rotating shaft 51 away from the trunk lid, and the support member 53 can abut against the vehicle body; specifically, the boss 8, as a mechanical stop structure, is installed on the mounting bracket 1 and located in the rotation path of the rotating shaft 51. When the rotating shaft 51 rotates or is subjected to external force, the boss 8 contacts it and prevents it from continuing to move away from the first limiting mechanism 2, thereby effectively preventing the rotating shaft 51 from directly contacting the trunk lid, reducing the friction between the metal and the trunk lid, and reducing paint residue, metal shavings, and paint peeling. The absence of painting defects helps maintain a clean painting environment and avoids contaminating the trunk lid surface. When the trunk lid descends naturally, if it relies solely on the pivot 51 abutting against the vehicle body for support, the angle between the trunk lid and the vehicle body will be small, which may prevent the robot from effectively detecting the handle 52. The design of the support component 53 allows the trunk lid to be further opened, creating a larger opening between the trunk lid and the vehicle body. This provides the robot with a more spacious operating space, making it easier to detect the handle 52 and perform precise gripping and operation, reducing the need for manual intervention. The shape and size of the trunk lid vary for different vehicle models, and the support component 53 can be adjusted or replaced according to the specific vehicle model, thereby enhancing the fixture's adaptability to multi-model co-production.

[0049] Please see Figure 1 , Figure 3 and Figure 4In one embodiment, the automatic automotive painting fixture 100 further includes a positioning mechanism 6. The positioning mechanism 6 includes a first positioning post 61 and a second positioning post 62. Both the first positioning post 61 and the second positioning post 62 are connected to the side of the mounting bracket 1 facing the limiting component 31, and the first positioning post 61 and the second positioning post 62 are arranged at intervals. The first positioning post 61 can engage with a first positioning hole on the trunk lid, and the second positioning post 62 can engage with a second positioning hole on the trunk lid. Specifically, the first positioning post 61 corresponds one-to-one with the first positioning hole, and the second positioning post 62 corresponds one-to-one with the second positioning hole, achieving two-point positioning. This effectively prevents the fixture from shaking or misaligning during the painting process, ensuring that the fixture is accurately positioned and angled after installation. This improves the repeatability and consistency of the painting operation and avoids... To prevent poor coating due to installation deviations, operators or robots can quickly complete the alignment and installation using the positioning column, eliminating the need for repeated adjustments to angle or position, thus saving installation time. This is particularly suitable for high-speed, highly automated production lines. The positioning column provides clear installation guidance, allowing new employees or robots to easily master the installation techniques, which is conducive to promoting the standardization and platform-based management of fixture use. If the trunk lid is not in the correct position, the positioning column cannot be smoothly inserted into the positioning hole, serving as a mistake-proofing mechanism to remind operators or the control system to correct it in time, reducing equipment damage or coating defects caused by misinstallation. The positioning column has a simple structure with no complex moving parts, is not prone to paint accumulation, and its smooth surface treatment makes it easier to clean, reducing the impact of paint residue. The overall structure is durable and suitable for high-frequency use scenarios.

[0050] Please see Figure 1 , Figure 3 and Figure 4 In one embodiment, the positioning mechanism 6 further includes a reinforcing member 63. The first positioning post 61 and the second positioning post 62 are both connected to the reinforcing member 63, and the reinforcing member 63 can abut against the trunk lid. Specifically, the reinforcing member 63 connects the first positioning post 61 and the second positioning post 62, which can effectively prevent the first positioning post 61 and the second positioning post 62 from bending or breaking due to uneven force, improve the durability and service life of the positioning mechanism 6 in frequent use, and after installation, the reinforcing member 63 can abut against the trunk lid, thereby reducing the contact area between the mounting bracket 1 and the trunk lid, reducing the friction between the metal and the trunk lid, reducing the generation of coating defects such as paint residue, metal chips, and paint peeling, which is conducive to maintaining a clean spraying environment and avoiding contamination of the trunk lid surface.

[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An automatic automotive painting fixture, characterized in that, The automatic automotive painting fixture includes: Mounting rack; A first limiting mechanism is connected to the mounting bracket and can engage with a slot on the trunk lid. The second limiting mechanism includes a limiting component and a first elastic reset member. The limiting component is slidably engaged with the mounting bracket so that the limiting component can engage with the groove on the trunk lid. Both the limiting component and the mounting bracket are connected to the first elastic reset member so that the first elastic reset member can restrict the separation of the limiting component from the groove on the trunk lid. A locking mechanism includes a locking component and a second elastic reset member. The locking component is slidably engaged with the mounting bracket so that it can engage with the limiting component. Both the locking component and the mounting bracket are connected to the second elastic reset member so that the second elastic reset member can restrict the separation of the locking component from the limiting component. An operating mechanism is rotatably mounted on the mounting frame and is used for the robot to hold.

2. The automatic automotive painting fixture as described in claim 1, characterized in that, The limiting assembly includes an operating lever and a limiting component. The limiting component is slidably engaged with the mounting bracket. The operating lever is rotatably mounted on the mounting bracket and the limiting component, so that the operating lever can drive the limiting component to separate from the groove on the trunk lid. Both the limiting component and the mounting bracket are connected to the first elastic reset member, so that the first elastic reset member can restrict the separation of the limiting component from the groove on the trunk lid.

3. The automatic automotive painting fixture as described in claim 2, characterized in that, The limiting component includes a limiting member, a connecting member, and a limiting platform. Both the connecting member and the limiting platform are connected to the limiting member. The mounting bracket includes an interconnected mounting plate and a support. The support has a first through hole. The limiting member slides against the wall of the first through hole. The operating lever is rotatably mounted on the mounting plate and also rotatably mounted on the connecting member, allowing the operating lever to drive the limiting member away from the groove on the trunk lid via the connecting member. Both the connecting member and the support are connected to a first elastic reset member, allowing the first elastic reset member to restrict the separation of the limiting member from the groove on the trunk lid via the connecting member. The limiting platform abuts against the support to restrict the limiting member from moving away from the first limiting mechanism. The first limiting mechanism is connected to the mounting plate, the locking assembly slides against the mounting plate, and the operating mechanism is rotatably mounted on the mounting plate.

4. The automatic automotive painting fixture as described in claim 3, characterized in that, The operating lever includes an actuating part, a rotating part, and a locking part. The rotating part and the locking part are both connected to the actuating part. The rotating part is rotatably mounted on the mounting plate and rotatably mounted on the connecting member, so that the actuating part can drive the limiting member to separate from the groove on the trunk lid through the rotating part and the connecting member. The locking assembly can engage with the locking part.

5. The automatic automotive painting fixture as described in claim 4, characterized in that, The locking assembly includes a lifting ring and a fastener. A limiting hole is provided on the snap-fit ​​portion. The mounting plate includes a plate body and a mounting frame. The mounting frame and the bracket are respectively disposed on opposite sides of the plate body. The mounting frame has a receiving cavity and a first through hole and a second through hole communicating with the receiving cavity. Both the first and second through holes are slidably engaged with the fastener. The cavity wall of the receiving cavity and the fastener are both connected to a second elastic reset member, so that the second elastic reset member can restrict the separation of the fastener from the limiting hole. The lifting ring is connected to the fastener, so that the lifting ring can drive the fastener to separate from the limiting hole. The first limiting mechanism is connected to the plate body. The operating mechanism is rotatably mounted on the plate body, and the rotating part is rotatably mounted on the plate body.

6. The automatic automotive painting fixture as described in claim 3, characterized in that, The limiting component also includes a guide member, which is connected to the mounting plate and is arranged at intervals with the bracket. The guide member is provided with a second through hole for the limiting component to pass through.

7. The automatic automotive painting fixture as described in any one of claims 1 to 6, characterized in that, The operating mechanism includes a rotating shaft and a handle. The rotating shaft is rotatably mounted on the mounting frame, and the handle is connected to the rotating shaft. The handle is used for the robot to hold. The automatic automotive painting fixture also includes a fixing mechanism. The fixing mechanism is connected to the mounting frame and is provided with a limit groove. The rotating shaft can engage with the limit groove to restrict the rotating shaft from moving towards the first limit mechanism.

8. The automatic automotive painting fixture as described in claim 7, characterized in that, The mounting bracket is also provided with a boss, which can abut against the rotating shaft to restrict the rotating shaft from moving away from the first limiting mechanism; And / or, The operating mechanism also includes a support member connected to the side of the rotating shaft away from the trunk lid, and the support member is capable of abutting against the vehicle body.

9. The automatic automotive painting fixture as described in any one of claims 1 to 6, characterized in that, The automatic automotive painting fixture also includes a positioning mechanism, which includes a first positioning post and a second positioning post. Both the first positioning post and the second positioning post are connected to the side of the mounting bracket facing the limiting component, and the first positioning post and the second positioning post are arranged at intervals. The first positioning post can engage with the first positioning hole on the trunk lid, and the second positioning post can engage with the second positioning hole on the trunk lid.

10. The automatic automotive painting fixture as described in claim 9, characterized in that, The positioning mechanism also includes a reinforcing member, and both the first positioning post and the second positioning post are connected to the reinforcing member, which can abut against the trunk lid.

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