Vehicle door coating auxiliary jig and vehicle door coating system

Abstract

The utility model relates to a vehicle door coating auxiliary jig and a vehicle door coating system, and belongs to the technical field of vehicle coating, the vehicle door coating auxiliary jig comprises a main body part and a connecting part which are connected, the main body part is used for providing an operation area for a mechanical arm of a door opening robot, and the connecting part is used for being detachably connected with a vehicle door to achieve convenient disassembly and assembly with the vehicle door; in the specific working process, the jig is connected with the vehicle door through the connecting part, the mechanical arm extends from the outer side of the vehicle door to the inner side of the vehicle door and abuts against the side, away from the vehicle door, of the main body part, and then acting force towards the vehicle door direction is applied to the main body part to achieve the door opening action; the contact area is constructed for the mechanical arm of the door opening robot, compared with a previous mode of directly applying force to the vehicle door, the acting force of the mechanical arm is concentrated on the jig, the vehicle door opening operation can be smoothly completed, and the situation that the mechanical arm touches glue, in a wet film state, on the upper edge of an outer plate of the vehicle door in the vehicle door contact process can be effectively avoided; and the quality and efficiency of vehicle door coating operation are improved.

Description

Technical Field

[0001] This application relates to the field of automotive painting technology, and in particular to an auxiliary fixture for door painting and a door painting system. Background Technology

[0002] With the development of automobile production, robot operations are used for car body painting, and robots automatically open and close doors to prevent impurities from getting into the paint surface.

[0003] For models with frameless doors, the upper edge of the four door panels needs to be edge-sealed and glued. These models are produced using a glue-free baking oven, where the glue is in a wet film state during painting. When a conventional topcoat inner spraying robot hooks onto the upper edge of the four doors to open them, the glue applied to the upper edge of the frameless door causes a glue-related issue. Utility Model Content

[0004] This application provides a door painting auxiliary fixture, which aims to solve the technical problem of easy glue contact by door opening robots in the existing painting process; another objective of this application is to provide a door painting system.

[0005] To achieve the above objectives, according to the first aspect of this application, a door painting auxiliary fixture is provided, comprising:

[0006] Main body;

[0007] A connecting portion for detachably connecting to the inner panel of the door; the connecting portion includes:

[0008] The overlapping part is connected to the main body part;

[0009] The locking part is detachably connected to the overlapping part;

[0010] In the case where the door painting auxiliary fixture is connected to the inner panel, the overlapping part and the locking part are respectively fixed to both sides of the inner panel.

[0011] Optionally, the overlapping portion includes:

[0012] The mounting part is detachably connected to the locking part;

[0013] The extension is connected to the mounting portion;

[0014] A bent portion is connected to the end of the extension that is away from the mounting portion, and the bent portion is used to abut against the inner plate;

[0015] The mounting portion and the bending portion are spaced apart, and an overlapping space for accommodating the inner panel is formed between the mounting portion, the extension portion and the bending portion.

[0016] Optionally, the locking part includes:

[0017] The fixing part is movably inserted into the mounting part;

[0018] A limiting part is provided on the side of the mounting part facing the bending part and is detachably connected to the fixing part.

[0019] Optionally, the main body has a main body groove for accommodating a robotic arm, the main body groove extending at least through one side of the main body in a third direction.

[0020] Optionally, the main body further includes a first plate, a second plate, and two side plates, wherein the first plate and the second plate are disposed opposite to each other along a second direction, and the two side plates are disposed opposite to each other along a first direction; each side plate is connected to the first plate and the second plate to form the main body groove;

[0021] The first direction, the second direction, and the third direction intersect each other.

[0022] Optionally, the main body groove has a slot for the robotic arm to pass through the main body groove, the slot being located on one side of the main body portion along the third direction;

[0023] The second plate is located on the side of the first plate away from the inner plate, and the side of the second plate away from the slot is inclined toward the direction closer to the first plate.

[0024] Optionally, when the door painting auxiliary fixture is connected to the inner panel, the main body protrudes at least partially from the outside of the door in a third direction.

[0025] Optionally, when the door painting auxiliary fixture is connected to the inner panel, the main body and the inner panel are spaced apart.

[0026] Optionally, the system includes a plurality of connecting portions, which are spaced apart along a first direction and are all connected to the main body portion.

[0027] According to a second aspect of this application, a vehicle door painting system is provided, including the vehicle door painting auxiliary fixture described in any of the above claims.

[0028] This application embodiment adds a door painting auxiliary fixture, which includes a main body and a connecting part. The main body provides an operating area for the robotic arm of the door opening robot, and the connecting part is used to detachably connect to the door, enabling convenient assembly and disassembly. In specific operation, the fixture is connected to the door through the connecting part, and the robotic arm extends from the outside of the door to the inside of the door, abutting against the side of the main body away from the door. Then, it applies a force towards the door to the main body, thereby realizing the door opening action. This application constructs a dedicated contact area for the robotic arm of the door opening robot. Compared with the previous method of directly applying force to the door, the force of the robotic arm is now concentrated on the fixture. This not only enables the door opening operation to be completed smoothly, but also effectively avoids the robotic arm touching the wet film of the colloid on the outer edge of the door panel during the contact process, significantly improving the quality and efficiency of the door painting operation.

[0029] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0032] Figure 1 This is a schematic diagram of the overall structure of the door painting auxiliary fixture provided in an exemplary embodiment of this disclosure;

[0033] Figure 2 This is a schematic diagram of the overall structure of the overlapping portion provided in an exemplary embodiment of this disclosure;

[0034] Figure 3 This is a schematic diagram of the overall structure of the connecting part provided in an exemplary embodiment of this disclosure;

[0035] Figure 4 This is a schematic diagram of the structure of one embodiment of the main body provided in the exemplary embodiments of this disclosure;

[0036] Figure 5 This is a partial structural schematic diagram of another embodiment of the main body provided in the exemplary embodiments of this disclosure;

[0037] Figure 6This is a schematic diagram showing the positional relationship between the second plate and the first plate provided in an exemplary embodiment of this disclosure;

[0038] Figure 7 This is a schematic diagram showing the positional relationship between the door painting auxiliary fixture and the door provided in an exemplary embodiment of this disclosure.

[0039] Explanation of reference numerals in the attached figures:

[0040] X - First direction; Y - Second direction; Z - Third direction;

[0041] 10-Door; 11-Outer panel; 12-Inner panel;

[0042] 100 - Main body; 110 - First plate; 120 - Side plate; 130 - Second plate; 140 - Main groove; 150 - Groove opening;

[0043] 200 - Connecting part; 210 - Overlapping part; 211 - Mounting part; 212 - Extension part; 213 - Bending part; 220 - Locking part; 221 - Fixing part; 222 - Limiting part. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0046] In the accompanying drawings of this application's embodiments, arrows labeled X represent the first direction X, arrows labeled Y represent the second direction Y, and arrows labeled Z represent the third direction Z. The description of this application introduces the first direction X, the second direction Y, and the third direction Z to more clearly illustrate the structure of the door painting auxiliary fixture and the relative positional relationships between its components. In practical applications, the first direction X, the second direction Y, and the third direction Z can point to any direction in space. For ease of understanding, this application uses the first direction X as the length direction of the door painting auxiliary fixture, the second direction Y as the width direction of the door painting auxiliary fixture, and the third direction Z as the depth direction of the door painting auxiliary fixture as an example for explanation. In practical applications, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0047] With the development of automobile production, robotic operations are now used for car body painting, and robots automatically open and close doors to prevent impurities from entering the paint surface. For models with frameless doors, the upper edge of the four door panels needs to be edge-sealed with adhesive. The painting process in these models uses adhesive-free baking booths, where the adhesive is in a wet film state during painting. In conventional topcoat internal spraying, the door-opening robot hooks onto the upper edge of the four doors to open them. However, because of the adhesive applied to the upper edge of the frameless doors, there is a risk of adhesive contact issues.

[0048] According to the first aspect of this disclosure, this disclosure provides a door painting auxiliary fixture, please refer to... Figure 1 (To illustrate the positional relationship between the door painting auxiliary fixture and the inner panel 12 of the door 10) Figure 1 (A simplified schematic diagram of the inner panel 12 of the car door 10 is provided below). This car door painting auxiliary fixture includes a main body 100 and a connecting part 200 connected to each other. The connection between the main body 100 and the connecting part 200 can be welded. The main body 100 provides an operating area for the robotic arm of the door opening robot, and the connecting part 200 is used to detachably connect to the car door 10, enabling convenient assembly and disassembly. In actual operation, this fixture is connected to the car door 10 through the connecting part 200. The robotic arm extends from the outside of the car door 10 to the inside of the car door 10, abutting against the side of the main body 100 opposite to the car door 10, and then applies a force toward the car door 10 to the main body 100, thereby realizing the door opening action.

[0049] The aforementioned connecting portion 200 includes an overlapping portion 210 and a locking portion 220. The overlapping portion 210 is connected to the main body portion 100, and the locking portion 220 is detachably connected to the overlapping portion 210. Specifically, when the door painting auxiliary fixture is assembled with the inner panel 12, the overlapping portion 210 and the locking portion 220 are respectively fixed to both sides of the inner panel 12. It should be noted that the overlapping portion 210 overlaps with one side of the inner panel 12, and the locking portion 220 is located on the other side of the inner panel 12. Through their cooperation, the overlapping portion 210 and the inner panel 12 are firmly locked together, thereby achieving a stable connection between the fixture and the inner panel 12. Specifically, the overlapping portion 210 overlaps on the side of the inner panel 12 facing the outer panel 11 (i.e., the interlayer area between the inner panel 12 and the outer panel 11), and the locking portion 220 is connected to the overlapping portion 210 via a detachable structure and is located on the other side of the inner panel 12 away from the outer panel 11. The contact position between the overlapping part 210 and the inner panel 12 is hidden in the difficult-to-observe area between the inner panel 12 and the outer panel 11. Compared with the solution of overlapping on the outside of the inner panel 12 (the side away from the outer panel 11), it can effectively avoid the risk of appearance interference, assembly error or coating damage that may be caused by the exposed overlapping structure. It improves the concealment and reliability of the product from the details, and further ensures the precision of the painting process and the quality of the finished product of the door 10.

[0050] Through the above technical solution, by adding this door painting auxiliary fixture, a dedicated contact area is created for the robotic arm of the door opening robot. Compared with the previous method of directly applying force to the door 10, the force of the robotic arm is now concentrated on this fixture. This not only allows the door 10 to be opened smoothly, but also effectively avoids the robotic arm from touching the wet film of the colloid on the upper edge of the outer panel 11 of the door 10 during the contact process, significantly improving the quality and efficiency of the door 10 painting operation.

[0051] In some embodiments, please refer to Figure 2The aforementioned overlapping portion 210 includes a mounting portion 211, an extension portion 212, and a bending portion 213. At least one of the mounting portion 211 and the extension portion 212 is connected to the main body portion 100; the connection can be made by welding. The mounting portion 211 is detachably connected to the locking portion 220, which ensures assembly stability while also facilitating maintenance. The extension portion 212 is connected to the mounting portion 211, and the bending portion 213 is connected to the end of the extension portion 212 away from the mounting portion 211, and the bending portion 213 is used to abut against the inner panel 12. Specifically, one end of the extension portion 212 is perpendicularly connected to the mounting portion 211, and the other end extends linearly in a direction away from the mounting portion 211 (i.e., the second direction Y). The length parameter of the extension portion 212 is designed according to the required distance between the inner panel 12 of the door 10 and the main body portion 100.

[0052] The bent portion 213 is connected to the end of the extension 212 away from the mounting portion 211. The bent structure of the bent portion 213 can achieve surface contact with the inner panel 12, thereby effectively dispersing contact stress and improving the stability of the connection. It is worth mentioning that the mounting portion 211 and the bent portion 213 are spaced apart, so that the mounting portion 211, the extension 212 and the bent portion 213 form an overlapping space specifically for accommodating the inner panel 12. This overlapping space provides the inner panel 12 with a precise positioning function.

[0053] In some examples, the mounting part 211 adopts a plate-like structure design, providing a stable and reliable mounting platform for the locking part 220, ensuring that the locking part 220 can be accurately installed and perform its fastening function. The extension part 212 and the bending part 213 cooperate to form a hook-like structure. This structure can be directly hung on the inner panel 12 of the door 10. Specifically, the bending part 213 can closely fit and contact the surface of the inner panel 12 opposite to the mounting part 211, firmly hooking the inner panel 12 like a hook, realizing the initial positioning and hanging of the fixture and the inner panel 12.

[0054] Through the above technical solution, the structure of the overlapping part 210 is further refined, and the overlapping space provides a precise positioning function for the inner panel 12; the extension part 212 and the bending part 213 cooperate to form a hook-like structure, which is hung on the inner panel 12 of the door 10, realizing the initial positioning and hanging of the fixture and the inner panel 12, laying the foundation for the subsequent stable connection.

[0055] In some embodiments, please refer to Figure 3The locking part 220 includes a fixing part 221 and a limiting part 222. The fixing part 221 is movably inserted into the mounting part 211. The fixing part 221 is used to pass through the mounting part 211 and abut against the inner plate 12, and the limiting part 222 is used to limit the relative position between the fixing part 221 and the mounting part 211. In order to facilitate the movable insertion of the fixing part 221, the mounting part 211 is provided with a mounting hole for the fixing part 221 to pass through.

[0056] It should be noted that one end of the fixing part 221 can flexibly pass through the mounting part 211 and tightly abut against the inner panel 12. The limiting part 222 then limits the relative position of the fixing part 221 and the mounting part 211, ensuring that the fixing part 221 always applies pressure to the inner panel 12. The pressure applied by the fixing part 221 to the inner panel 12 and the pressure from the bending part 213 against the other side of the inner panel 12 form a bidirectional clamping force, fixing the inner panel 12 of the door 10 within the overlapping space. During the painting operation of the door 10, this dual-structure design ensures that the auxiliary fixture and the inner panel 12 remain firmly connected. Even when faced with external force interference such as the force applied by the robotic arm of the door opening robot, it can effectively prevent the fixture from shifting, thus providing reliable assurance for the precise operation of the robotic arm and further improving the painting quality and work efficiency of the door 10.

[0057] In some examples, the fixing part 221 can be a bolt (such as a φ9mm bolt), and the limiting part 222 can be a nut (such as an M8 nut), which can be welded to the mounting part 211. Specifically, the bolt's threaded portion moves through the mounting hole of the mounting part 211 and extends to abut against the inner plate 12, with the end of the threaded portion fully contacting the surface of the inner plate 12, providing a stable support point. The nut engages with the bolt's threaded portion, and by tightening the nut, the axial position of the bolt can be precisely adjusted, thereby effectively limiting the relative position of the fixing part 221 and the mounting part 211. This threaded connection not only has good self-locking performance, maintaining connection reliability under vibration, but also facilitates installation and disassembly, allowing for quick assembly and replacement of the fixture, significantly improving work efficiency. Furthermore, by selecting different specifications of bolt and nut combinations, the requirements for different thicknesses of the door 10 can be met, further enhancing the versatility and adaptability of this auxiliary fixture.

[0058] The above technical solution further refines the structure of the locking part 220, enabling it to achieve reliable clamping and precise positioning of the inner panel 12 through the coordinated action of the fixing part 221 and the limiting part 222. It also simplifies the operation process and improves maintenance convenience through standardized bolt and nut combinations. This provides a connection solution that is structurally stable, highly adaptable and easy to implement for door painting auxiliary fixtures, effectively meeting the requirements of automated painting production lines for high precision and high reliability of tooling fixtures.

[0059] In some embodiments, the main body 100 includes the structures of the connecting portion 200 in the above embodiments. The main body 100 has the following structural form:

[0060] In some examples, please refer to Figure 4 The main body 100 can adopt a plate-like structure, and the connecting part 200 is connected to the plate-like structure. In operation, this fixture is connected to the car door 10 via the connecting part 200. The robotic arm extends from the outside of the car door 10 to the inside of the car door 10, abutting against the side of the plate-like structure opposite to the car door 10. Then, it applies a force towards the car door 10 to the plate-like structure, thereby achieving the door opening action. This plate-like structure design is simple and provides a stable force application plane for the robotic arm, ensuring that the force is evenly transmitted to the car door 10, effectively avoiding stress concentration that could damage the car door 10. At the same time, the lightweight nature of the plate-like structure also helps reduce the weight of the entire auxiliary fixture, reducing the impact on the load on the door-opening robot.

[0061] In some examples, please refer to Figure 5 (It should be noted that, for ease of display) Figure 5 (Only some features are shown in the diagram; the other features are symmetrically arranged with the shown features.) The main body 100 has a main body groove 140 for accommodating the robotic arm, and the main body groove 140 penetrates at least one side of the main body 100 along the third direction Z. This structural design enables both opening and closing actions. Specifically, when the opening action is required, the robotic arm enters the main body groove 140 and applies an outward pulling force to the door 10 by abutting against the inner wall of the main body groove 140, thus opening the door. When the closing action is required, since the robotic arm is already within the main body groove 140 when the door is opened, it only needs to apply a pushing force in the direction away from the door 10, thereby closing the door 10. The main body groove 140 not only provides precise motion trajectory guidance for the robotic arm but also disperses the force by increasing the contact area, further improving the stability and reliability of the operation. In addition, the through design of the main body groove 140 makes the entry and exit of the robotic arm more flexible and convenient, adapting to different work scenarios. It should be noted that the main slot 140 of the fixture can be cut and welded as a whole from a 3mm steel plate, with chamfered edges around the perimeter to prevent hand cuts. The door-opening robot's hook is inserted into the main slot 140 to perform door opening and closing operations, ensuring that process requirements are met.

[0062] Specifically, the main body 100 also includes a first plate 110, a second plate 130, and two side plates 120. The first plate 110 and the second plate 130 are arranged opposite each other along the second direction Y, forming the end limit boundaries of the main body groove 140. The two side plates 120 are arranged opposite each other along the first direction X, serving as lateral constraint structures for the main body groove 140. Each side plate 120 is connected to the first plate 110 and the second plate 130 to form the main body groove 140; they can be reliably connected by welding, bolting, or other reliable methods. This structure not only provides motion limits for the robotic arm, ensuring its stable operation along a preset trajectory during the opening and closing of the door 10, but also effectively disperses the stress generated when the robotic arm applies force through the coordinated force of the first plate 110, the second plate 130, and the two side plates 120, preventing excessive local stress from causing deformation of the main body 100. In addition, the symmetrically distributed plates (first plate 110 and second plate 130) and side plates 120 design enable the main body 100 to maintain structural strength while having good spatial symmetry, which facilitates assembly with the connecting part 200 and further improves the overall reliability and stability of the door painting auxiliary fixture.

[0063] Through the above technical solutions, the structure of the main body 100 is diversified. The plate-shaped main body 100 achieves efficient door opening function through a simple planar design; the main body groove 140 structure of the main body 100, while realizing the door opening function, further expands the door closing capability, providing the robotic arm with more precise motion guidance and a more stable force transmission method. Both structural forms significantly improve the automation level and operational accuracy of the painting operation of the car door 10 by optimizing the interaction between the robotic arm and the fixture, while reducing the risk of damage to the car door 10, providing reliable technical support for automated production in the automotive manufacturing field.

[0064] In some embodiments, please refer to Figure 6 The main body groove 140 has a slot 150 for the robotic arm to pass through. The slot 150 is located on the Z-direction side of the main body 100, providing a convenient entry and exit channel for the robotic arm. The second plate 130 is located on the side of the first plate 110 away from the inner plate 12, and the side of the second plate 130 away from the slot 150 is inclined towards the direction closer to the first plate 110. This effectively avoids spatial interference between components. When the fixing part 221 moves towards the inner plate 12 to perform a fastening operation, the inclined second plate 130 can reserve sufficient movement space for the fixing part 221, ensuring that the fixing part 221 can move smoothly and fit tightly against the inner plate 12. This ensures the efficiency and stability of the connection part 200 when it cooperates with the main body 100, further optimizing the overall performance of the door painting auxiliary fixture.

[0065] In some embodiments, please refer to Figure 7When the door painting auxiliary fixture is connected to the inner panel 12, the main body 100 protrudes at least partially from the outer side of the door 10 along the third direction Z. That is, when the fixture is assembled with the inner panel 12, the fixture is higher than the door 10, forming a clear spatial misalignment. Specifically, "protruding from the outer side of the door 10" means that the fixture protrudes from the outer panel 11 of the door 10. Therefore, this embodiment avoids direct contact between the robotic arm and the wet film adhesive on the outer panel 11 of the door 10, preventing damage to the adhesive and affecting the painting quality. It also allows the robotic arm to quickly establish contact with the main body 100 without needing to penetrate deeper into the narrow space inside the door 10, effectively reducing spatial obstacles during operation and greatly improving the smoothness and accuracy of the door 10's opening and closing actions, providing a strong guarantee for the efficient implementation of automated painting operations.

[0066] In some embodiments, such as Figure 1 As shown, when the door painting auxiliary fixture is connected to the inner panel 12, the main body 100 and the inner panel 12 are spaced apart. It should be noted that the main body 100 and the inner panel 12 are spaced apart in the second direction Y, meaning there is a gap L between them. This design clearly ensures that the main body 100 and the inner panel 12 do not make direct contact under normal operating conditions. Therefore, the bent portion 213 of the fixture contacts the side of the inner panel 12 facing the outer panel 11 (located in a difficult-to-observe area). Apart from this, only the end of the fixing portion 221 contacts the inner panel 12; that is, the visible side of the fixture makes point contact with the inner panel 12. The point contact method reduces the contact area, lowers the risk of corrosion, and effectively reduces the risk of damage to the surface of the inner panel 12 of the door 10 by the fixture, avoiding scratches or indentations that may be caused by large-area contact. On the other hand, the point contact method makes it easier for operators to quickly check and evaluate the connection status between the fixture and the inner panel 12, which provides convenience for subsequent maintenance and repair work, and further improves the reliability and practicality of the door painting auxiliary fixture in practical applications.

[0067] It should be noted that, as Figure 1 As shown, the gap L is between 15mm and 25mm. That is, the gap L can be any value or a range between any two values ​​from 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 23mm, 24mm, and 25mm. On the one hand, the gap L can effectively avoid collision interference between the main body 100 and the inner plate 12 during the application of force by the robotic arm, ensuring the safety and stability of the fixture and the door 10 structure during operation; on the other hand, it provides sufficient operating space for the bolts, nuts, and other locking parts 220 of the fixing part 221, which facilitates the operator to quickly complete the installation and disassembly of the fixture, while ensuring that the locking structure can play its best fastening role, so that the fixture and the inner plate 12 remain reliably connected.

[0068] In some embodiments, the number of connecting parts 200 is set in several ways, specifically:

[0069] In some examples, there is one connecting portion 200, which can be connected to the bottom of the main body 100 or to both sides of the main body 100 in the first direction X. It should be noted that when the main body groove 140 only has a first plate 110 and a second plate 130, the connecting portion 200 is connected to the first plate 110 and the second plate 130 respectively; specifically, the extension portion 212 in the connecting portion 200 can be connected to the first plate 110 and the second plate 130 respectively.

[0070] When the main body groove 140 has a first plate 110, a second plate 130, and two side plates 120, the connection between the connecting part 200 and the main body 100 is diversified. It should be noted that when the connecting part 200 is provided at the bottom of the main body 100, the connecting part 200 is connected to the first plate 110, or the connecting part 200 is connected to both the first plate 110 and the second plate 130; when the connecting part 200 is provided on both sides of the main body 100 in the first direction X, the connecting part 200 can be connected to the first plate 110 and one side plate 120 respectively (specifically, the extension part 212 and the mounting part 211 in the connecting part 200 can both be connected to the side plate 120), or the connecting part 200 can be connected to the first plate 110, one side plate 120, and the second plate 130 respectively.

[0071] In some examples, there are multiple connecting portions 200, which are spaced apart along the first direction X and all connected to the main body 100. It should be noted that the connecting portions 200 can be located at the bottom of the main body 100 or on both sides of the main body 100 along the first direction X. This layout of multiple connecting portions 200 significantly enhances the connection stability between the fixture and the inner panel 12, distributing the overall force to multiple connection points and avoiding the risk of connection failure due to excessive force at a single point. The spacing of the connecting portions 200 along the first direction X can be precisely adjusted according to the structural characteristics and force requirements of the inner panel 12 of the door 10, ensuring that a uniform and stable connection force is maintained between the main body 100 and the inner panel 12 during the opening and closing of the door 10. Meanwhile, the multiple connecting parts 200 work together to better adapt to the complex stress changes caused by the robotic arm during the painting operation of the door 10, further improving the reliability and durability of the auxiliary fixture in practical applications, and providing a solid guarantee for the efficient and stable operation of the door 10 painting operation.

[0072] In summary, this door painting auxiliary fixture, by adding a main body 100 and a connecting part 200, changes the object of force application of the robotic arm, causing the main body 100 to protrude from the outside of the door 10, thus preventing the robotic arm from touching the wet film of the edge-sealing adhesive on the upper edge of the frameless door 10. The main body 100 has a diversified structure: the plate structure ensures that the painting line robot can smoothly complete the door opening action, and the structure with the main body groove 140 can ensure that the painting line robot can smoothly complete the opening and closing action, while reserving space for painting the inner panel 12. The connecting part 200 adopts a detachable connection of the overlapping part 210 and the locking part 220. The hook-shaped overlapping part 210 and the standardized locking components enable quick installation and disassembly, improving production efficiency. In addition, the contact parts between the fixture and the car body are specially designed so that only the bending part 213 and the end of the fixing part 221 contact the inner panel 12, avoiding damage to the appearance of the car body paint. It provides efficient and reliable technical support for the automated painting operation of the inner surface of the four doors of automobiles.

[0073] According to a second aspect of this disclosure, a vehicle door painting system is provided, which includes the aforementioned vehicle door painting auxiliary fixture. This vehicle door painting system possesses all the beneficial effects of the aforementioned vehicle door painting auxiliary fixture, which will not be elaborated further herein.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A car door painting auxiliary fixture, characterized in that, include: Main body (100); A connecting part (200) is used for detachably connecting to the inner panel (12) of the door (10); The connecting part (200) includes: The overlapping part (210) is connected to the main body part (100); The locking part (220) is detachably connected to the overlapping part (210); When the door painting auxiliary fixture is connected to the inner panel (12), the overlapping part (210) and the locking part (220) are respectively fixed on both sides of the inner panel (12).

2. The door painting auxiliary fixture according to claim 1, characterized in that, The overlapping portion (210) includes: The mounting part (211) is detachably connected to the locking part (220); An extension (212) is connected to the mounting portion (211); The bent portion (213) is connected to the end of the extension portion (212) away from the mounting portion (211), and the bent portion (213) is used to abut against the inner plate (12); The mounting portion (211) and the bending portion (213) are spaced apart, and an overlapping space for accommodating the inner plate (12) is formed between the mounting portion (211), the extension portion (212) and the bending portion (213).

3. The door painting auxiliary fixture according to claim 2, characterized in that, The locking part (220) includes: The fixing part (221) is movably inserted into the mounting part (211); A limiting part (222) is provided on the side of the mounting part (211) facing the bending part (213) and is detachably connected to the fixing part (221).

4. The auxiliary fixture for door painting according to claim 1, characterized in that, The main body (100) has a main body groove (140) for accommodating a robotic arm, the main body groove (140) extending at least through one side of the main body (100) along a third direction (Z).

5. The door painting auxiliary fixture according to claim 4, characterized in that, The main body (100) further includes a first plate (110), a second plate (130), and two side plates (120). The first plate (110) and the second plate (130) are arranged opposite each other along a second direction (Y), and the two side plates (120) are arranged opposite each other along a first direction (X). Each side plate (120) is connected to the first plate (110) and the second plate (130) to form the main body groove (140). The first direction (X), the second direction (Y), and the third direction (Z) intersect each other.

6. The door painting auxiliary fixture according to claim 5, characterized in that, The main body groove (140) has a slot (150) for the robotic arm to pass through the main body groove (140), the slot (150) being located on one side of the main body (100) along the third direction (Z); The second plate (130) is located on the side of the first plate (110) away from the inner plate (12), and the side of the second plate (130) away from the slot (150) is inclined toward the direction close to the first plate (110).

7. The auxiliary fixture for car door painting according to claim 1, characterized in that, When the door painting auxiliary fixture is connected to the inner panel (12), the main body (100) protrudes at least partially from the outside of the door (10) along the third direction (Z).

8. The auxiliary fixture for car door painting according to claim 1, characterized in that, When the door painting auxiliary fixture is connected to the inner panel (12), the main body (100) and the inner panel (12) are spaced apart.

9. The auxiliary fixture for door painting according to claim 1, characterized in that, It includes a plurality of connecting portions (200), which are spaced apart along a first direction (X) and are all connected to the main body portion (100).

10. A vehicle door painting system, characterized in that, include: The door painting auxiliary fixture as described in any one of claims 1 to 9.

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