Multi-vehicle type door spraying general tool auxiliary device

Abstract

This invention relates to a universal tooling fixture for multi-model car door painting, featuring a split structure design consisting of a limiting component and a positioning component. The limiting component includes a limiting plate, a vertical plate, a pin, and a modified hexagonal nut. The vertical plate is connected to a retaining ring, and the limiting plate is connected to the car door lock mounting hole via the modified hexagonal nut, modified internal hexagonal countersunk screws, and the pin. The positioning component includes a positioning plate, a long pin, and a short pin. The positioning plate is connected to the mounting hole on the side panel of the car body via modified internal hexagonal countersunk screws. The limiting component and the positioning component are functionally connected by the long pin engaging with the retaining ring. This invention not only achieves universal functionality, meeting the requirements of car door painting processes and product quality, but also reduces management difficulty and labor intensity, effectively improving production efficiency. The design and application of this universal tooling fixture for multi-model painting processes provides technical support for the platformization of automotive product design and process data support for subsequent model introduction into production lines, reducing the difficulty and cost of tooling development.

Description

Technical Field

[0001] This invention belongs to the field of coating production technology, specifically relating to a universal tooling and auxiliary fixture for painting automobile doors used in multi-model painting processes. Background Technology

[0002] The study of the universality of auxiliary tools is an important way to reduce costs. To achieve universality for automotive door painting auxiliary tools, it is necessary to communicate with the product design department before tool development. Based on the location of the door lock installation process holes shown in the product drawings, a review of the tooling compatibility of various painting specialties regarding the location and distance of the process holes, the automatic spraying opening angle, and the multi-vehicle door tooling auxiliary tools should be organized. After the review, the tool's shape and specifications should be proposed. The product design department should then conduct a comprehensive CAE analysis, combined with the door hinge design, to provide an optimized solution and a feasible digital model.

[0003] Currently, the engineering department is prototyping a batch of auxiliary tools based on the design department's digital model and optimized tooling scheme. This is to verify whether the auxiliary tools will affect product quality during the interior and exterior painting of car doors, and to adjust the specifications and structure of the auxiliary tools to eliminate any risks associated with their use. After the auxiliary tools pass verification on test vehicles, the engineering department provides feedback to the design department. If design changes are needed, the design department will add process holes or design corresponding installation structures at the corresponding locations on the product to facilitate the installation of the auxiliary tools, making the tooling and auxiliary tools compatible with the door painting process for multiple different car models. However, frequent design changes for multiple car models not only increase management difficulty and labor intensity but also reduce production efficiency and increase costs.

[0004] Therefore, there is an urgent need to develop a universal tooling tool that can be installed on multiple vehicle models and achieve universal functionality. Summary of the Invention

[0005] The purpose of this invention is to provide a low-cost, universal tooling fixture for automotive doors in multi-model painting processes. This addresses the problem that existing fixtures are suitable for a single model, have complex structures, and cannot achieve universality across different automotive painting production lines. This method reduces logistics, storage, and management costs. Its reasonable design, simple structure and operation lower costs and reduce identification difficulty, saving storage space. It provides platform-based technical support for product development and process data support for subsequent model introduction into production lines, thereby reducing the difficulty and cost of tooling fixture development.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A universal tooling fixture for painting doors of multiple vehicle models is a split structure, consisting of a limiting component and a positioning component;

[0008] The limiting component includes a limiting plate 1; the limiting plate 1 is connected to a vertical plate 2, a pin 3 and a modified hexagonal nut 5; the vertical plate 2 is connected to a retaining spring 4; the limiting plate 1 is connected to the door lock mounting hole through the modified hexagonal nut 5, a modified internal hexagon countersunk screw I6 that matches the modified hexagonal nut 5 and the pin 3.

[0009] The positioning assembly includes a positioning plate 10; the positioning plate 10 is connected to a long pin shaft 11 and a short pin shaft 12 respectively; the positioning plate 10 is connected to the mounting holes of the vehicle side panel through modified hexagon countersunk screws II13;

[0010] The long pin 11 can engage with the snap ring 4, so that the door opening robot opens the door and the car body during the automatic painting process. After the internal painting robot finishes painting the inner opening of the door, the door opening robot closes the door and the door will not open again. The clamping distance of the snap ring 4 is 5mm±0.05mm. The clamping force range between the long pin 11 and the snap ring 4 is controlled within 60N-80N. The shape of the snap ring 4 should be suitable for the long pin 11.

[0011] Furthermore, the limiting plate 1 is welded to the upright plate 2, the pin 3 and the modified hexagonal nut 5 respectively. The upright plate 2 stands in the middle of the limiting plate 1, and the pin 3 and the modified hexagonal nut 5 are located on the left and right sides of the limiting plate 1 respectively.

[0012] Furthermore, the retaining ring 4 is parallel to the limiting plate 1, and the retaining ring 4 is connected to the upright plate 2 through the internal hexagonal screw 7, the washer 8 and the hexagonal nut 9.

[0013] Furthermore, the long pin 11 is welded and fixed to the upper end of the positioning plate 10, and the short pin 12 and the modified internal hexagon countersunk screw II 13 are located on the left and right sides of the lower end of the positioning plate 10, respectively. The short pin 12 is welded and fixed to the positioning plate 10.

[0014] Furthermore, the limiting plate 1 has a size of 50mm×85mm, a thickness of 3mm, and is made of 202 stainless steel plate.

[0015] Furthermore, the modified hexagonal nut 5 is of specification M8 and made of 202 stainless steel; the modified internal hexagon countersunk screw 6 is of specification M8×20 and made of 202 stainless steel, with a performance grade of 8.8, galvanized, and fully threaded; and the pin 3 is of specification Φ10×16 and made of 202 stainless steel round bar.

[0016] Furthermore, the distance between the center point of the pin 3 and the center point of the modified hexagon socket screw 6 is 59.5±0.1mm. The upright plate 2 is 23mm×25mm, 3mm thick, and made of 202 stainless steel plate. It is equipped with hexagon socket screw 7, specification M5×12, performance grade 8.8, galvanized; washer 8, specification D5, performance grade 8.8, galvanized; and hexagon nut 9, specification M5, performance grade 8.8, galvanized.

[0017] Furthermore, the retaining ring 4 is a 15mm spring sheet with a thickness of 0.8mm, and the material is CK75 spring steel sheet.

[0018] Furthermore, the positioning plate 10 has a size of 18mm × 58mm, a thickness of 3mm, and is made of 202 stainless steel plate.

[0019] Furthermore, the long pin 11 has a specification of Φ8×35 and is made of 202 stainless steel round bar; the short pin 12 has a specification of Φ6×20 and is made of 202 stainless steel round bar; the distance between the center point of the short pin 12 and the center point of the modified hexagon socket screw 13 is 36±0.1mm.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention provides a universal tooling fixture for door painting on multiple car models. It allows a single tooling fixture to be installed on multiple models, achieving universal functionality. This is primarily reflected in meeting the requirements of door painting processes and product quality, while also reducing management difficulty and labor intensity, effectively improving production efficiency. The design and application of this universal tooling fixture for multiple car models provides technical support for the platformization of automotive product design and process data support for subsequent model introduction into production lines, reducing the difficulty and cost of tooling fixture development. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 Schematic diagram of tooling and auxiliary fixture limit components;

[0024] Figure 2 Schematic diagram of tooling and fixture positioning components;

[0025] Figure 3 Tooling and auxiliary equipment assembly diagram

[0026] Figure 4Schematic diagram of the limiting plate;

[0027] Figure 5 Schematic diagram of the pin shaft;

[0028] Figure 6 Schematic diagram of the positioning plate;

[0029] Figure 7 Schematic diagram of the long pin shaft;

[0030] Figure 8 Schematic diagram of the short pin shaft;

[0031] Figure 9 A schematic diagram of the snap ring structure;

[0032] Figure 10 Top view of the limit component of universal tooling and auxiliary fixtures for multi-model door painting;

[0033] Figure 11 Visual diagram of the limit component of universal tooling and auxiliary fixtures for door painting of multiple vehicle models;

[0034] Figure 12 Top view of positioning components for universal tooling and auxiliary fixtures used in multi-vehicle door painting;

[0035] Figure 13 Side view schematic diagram of positioning components for universal tooling and auxiliary fixtures for multi-vehicle door painting;

[0036] Figure 14 Top view diagram of the assembly of universal tooling and auxiliary fixtures for door painting of multiple vehicle models;

[0037] Figure 15 Side view diagram of the assembly of universal tooling and auxiliary fixtures for door painting of multiple vehicle models;

[0038] Figure 16 Schematic diagram of the application of universal door accessories for the Hongqi H7-2021 model;

[0039] Figure 17 Schematic diagram of the application of universal door accessories for multiple models of Hongqi H9;

[0040] Figure 18 Schematic diagram of the application of universal door accessories for the Hongqi HS7 model across multiple vehicle types.

[0041] In the diagram: 1. Limiting plate; 2. Vertical plate; 3. Pin; 4. Snap ring; 5. Modified hexagonal nut; 6. Modified internal hexagon countersunk screw I; 7. Internal hexagon screw; 8. Washer; 9. Hexagonal nut; 10. Positioning plate; 11. Long pin; 12. Short pin; 13. Modified internal hexagon countersunk screw II. Detailed Implementation

[0042] The present invention will be further described below with reference to embodiments:

[0043] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0044] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0045] The universality research of auxiliary tools is an important way to reduce costs. To achieve universality of automotive door painting auxiliary tools, communication with the product design department is conducted before tool development. Based on the location of the door lock installation process holes shown in the product drawings, various painting specialties are organized to review the location and distance of the process holes, the automatic spraying opening angle, and the compatibility of tooling auxiliary tools for multiple car models. Afterwards, the tool's shape and specifications are determined. The product design department, through CAE comprehensive analysis and combined with the door hinge design, provides an optimized solution and feasible digital model. The engineering department, based on the design department's digital model and the optimized tool solution, manufactures a batch of auxiliary tools to verify whether the tools will affect product quality during the interior and exterior painting of automotive doors. Adjustments are made to the tool specifications and structure to eliminate usage risks. After the auxiliary tools pass verification on test vehicles, the engineering department reports the verification results to the design department. If design changes are needed, the design department, based on the tool's structure and dimensions, will add process holes or design corresponding installation structures at the corresponding locations on the product to achieve universality of tooling auxiliary tools for painting the doors of multiple different Hongqi car models.

[0046] like Figure 1 As shown, the universal tooling and auxiliary fixture for multi-model door painting of the present invention is a split structure design, consisting of a limiting component and a positioning component.

[0047] The limiting assembly includes a limiting plate 1, a vertical plate 2, a pin 3, and a modified hexagonal nut 5. The limiting plate 1 is welded to the vertical plate 2, the pin 3, and the modified hexagonal nut 5. The vertical plate 2 is connected to the retaining ring 4 via an internal hexagonal screw 7, a washer 8, and a hexagonal nut 9. The limiting plate 1 is connected to the pin 3 and the door lock mounting hole via the modified hexagonal nut 5 and a modified internal hexagonal countersunk screw I6.

[0048] The upright plate 2 stands in the middle of the limiting plate 1, and the pin 3 and the modified hexagonal nut 5 are located on the left and right sides of the limiting plate 1, respectively. The retaining spring 4 is parallel to the limiting plate 1 and is connected to the upright plate 2 by an internal hexagonal screw 7, a washer 8, and a hexagonal nut 9.

[0049] like Figure 2 As shown, the positioning assembly includes a positioning plate 10, a long pin 11, and a short pin 12; the positioning plate 10 is welded to the long pin 11 and the short pin 12 respectively. The positioning plate 10 is connected to the mounting holes on the side panel of the vehicle body via modified hexagon countersunk screws II13.

[0050] The long pin 11 is welded and fixed to the upper end of the positioning plate 10, and the short pin 12 and the modified internal hexagon countersunk screw II 13 are located on the left and right sides of the lower end of the positioning plate 10, respectively. The short pin 12 is welded and fixed to the positioning plate 10.

[0051] like Figure 3 As shown, the limiting component and the positioning component are connected by a long pin 11 that engages with the retaining spring 4. The locking force between the retaining spring 4 and the long pin 11 allows the door to be opened by the door-opening robot during the automatic painting process, and after the internal painting robot finishes painting the inner opening of the door, the door will not be opened again due to the locking effect of the retaining spring 4 and the long pin 11.

[0052] Specifically, such as Figure 4 As shown, the specifications of the limiting plate 1 are determined to be 50mm×85mm, 3mm thick, and made of 202 stainless steel plate, based on feedback from the product department regarding the door lock specifications and engineering data.

[0053] This invention modifies a hexagonal nut and a countersunk socket head cap screw. The modified hexagonal nut 5 is M8 in size and made of 202 stainless steel. The modified countersunk socket head cap screw 6 is M8×20 in size, made of 202 stainless steel, performance grade 8.8, galvanized, and fully threaded. Figure 5 As shown, the pin 3 has a specification of Φ10×16 and is made of 202 stainless steel round bar. It is connected to the vehicle body using the pin 3, a modified hexagonal nut 5, and a modified internal hexagon countersunk screw I6.

[0054] The specifications of pin 3 and short pin 12 depend on the specifications of the door lock process hole, and the corresponding pin specifications are determined based on the digital model data.

[0055] The distance between the center point of the pin 3 and the center point of the modified hexagon socket screw 6 is 59.5±0.1mm. It has been verified that this specification of the limiting plate is universally applicable to four Hongqi models. The specifications of the upright plate 2 are determined to be 23mm×25mm, 3mm thick, and made of 202 stainless steel plate. It is equipped with hexagon socket screws 7 (M5×12, performance grade 8.8, galvanized), washers 8 (D5, performance grade 8.8, galvanized), and hexagonal nuts 9 (M5, performance grade 8.8, galvanized).

[0056] The specifications of the snap ring 4 are determined to be a spring sheet of 15mm, a thickness of 0.8mm, and a material of CK75 spring steel sheet.

[0057] like Figure 6 As shown, the specifications of the positioning plate 10 are determined to be 18mm×58mm, with a thickness of 3mm, and the material is 202 stainless steel plate, based on feedback from the product department regarding the door lock specifications and the engineering data of the vehicle body and doorway.

[0058] like Figures 7-8 As shown, the long pin 11 has a specification of Φ8×35 and is made of 202 stainless steel round bar; the short pin 12 has a specification of Φ6×20 and is made of 202 stainless steel round bar; the distance between the center point of the short pin 12 and the center point of the modified hexagon socket screw 13 is 36±0.1mm.

[0059] During operation, the retaining spring 4 connected to the vertical plate 2 on the limit plate 1 of the car door is as follows: Figure 9 As shown, the spring clip 4 is clamped to the long pin 11 on the vehicle body positioning plate 10. Verification shows that the clamping force between the spring clip 4 and the long pin 11 is between 60N and 80N, while the technical requirement for the door-opening robot is 50N-100N. This ensures that the door remains closed without affecting the robot's operation, preventing it from opening suddenly during robot operation or transport / storage and causing accidents. The shape of the spring clip 4 should be suitable for the long pin 11 specification of Φ8×35. The long pin 11 specification is the optimal data after verification. To ensure controllable clamping force of the spring clip 4, the spacing between the clamping plates of the spring clip 4 is required to be 5mm ± 0.05mm. This spacing ensures that the clamping force does not decay under high-temperature oven drying conditions of 140℃-160℃ after the vehicle body is painted, ensuring that the door will not open abnormally. An optimized structure for the spring clip can also be a magnetic adsorption method, controlling the closing of the door and vehicle body through the size or performance specifications of a magnetic medium (such as a magnet), ensuring controllable opening and closing torque for the painting door-opening robot.

[0060] The above specific values ​​are based on the corresponding data of the door and body process holes of four different car models. They are feasible parameters obtained after multiple communications, simulation verification and real vehicle verification by the engineering design department. They are the true technical basis of the general tooling and auxiliary tools.

[0061] The technical requirements for the universal tooling and auxiliary fixtures for multi-model car door painting of this invention are as follows: 1. The welding is firm and the surface is polished smooth after welding to avoid injury to people and scratches to the car body; 2. Ensure that the unspecified dimensional tolerances and positional tolerances between each component are ±0.2mm.

[0062] This invention presents a universal tooling fixture for multi-model vehicle door painting, featuring a reasonable design, simple structure, and easy operation. This reduces costs, simplifies identification, saves storage space, and ensures high-quality vehicle body painting. The invention also provides universal data verification and feedback for the installation process, serving as guiding data for future product integration into production lines and supporting the platform-based forward development of the product. Furthermore, the invention verifies and provides data verification and feedback for the clamping force of the long pin shaft 11 and the retaining spring 4, providing guiding data for future vehicle body and door hinge design. This enables cost reduction for door fixtures in subsequent vehicle model integration into production lines and serves as crucial data support for the platform-based forward development of the product.

[0063] The assembly process of the above-mentioned universal tooling and auxiliary fixtures for painting doors of multiple vehicle models is as follows:

[0064] 1. Insert the positioning component into the threaded hole of the side lock ring of the vehicle body. By hand, align the modified hexagon countersunk screw II13 of the door accessory and screw it into the corresponding side hole of the positioning component. Then, use an auxiliary tool to slowly and evenly drive the modified hexagon countersunk screw II13 of the door accessory into the accessory. The door accessory, positioning component, and side panel should be in contact. Do not overtighten the bolt.

[0065] 2. Insert the pin 3 of the limiting component into the corresponding limiting hole on the car door. By hand, pass the modified hexagon countersunk screw I6 of the car door accessory through the corresponding hole on the car door, align it, and screw it into the limiting component. Then, use an auxiliary tool to slowly and evenly drive the hexagon bolt of the car door accessory into the accessory. The hexagon bolt of the car door accessory, the limiting component, and the car door should only make contact; do not overtighten the bolt.

[0066] Example 1

[0067] Application of universal door accessories for the Hongqi H7-2021 model, such as... Figure 16 As shown in Table 1, the H7 coating review results are as follows.

[0068] Table 1

[0069]

[0070] Review conclusion: The paint quality of the H7 model using universal door accessories for multiple vehicle models is qualified.

[0071] Example 2

[0072] The application of universal door assist features across multiple models of the Hongqi H9 is as follows: Figure 17 As shown in Table 2, the H9 coating review results are as follows.

[0073] Table 2

[0074]

[0075]

[0076] Review conclusion: The H9 paint quality is qualified for the application of universal auxiliary tools for doors of multiple vehicle models.

[0077] Example 3

[0078] The Hongqi HS7 model features universal door assist devices applicable to multiple car models, such as... Figure 18 As shown in Table 3, the HS7 coating review results are as follows.

[0079] Table 3

[0080]

[0081]

[0082] Review conclusion: The HS7 paint quality is qualified when using universal door accessories for multiple vehicle models.

[0083] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A universal tooling fixture for painting doors of multiple car models, characterized in that: It has a split structure, consisting of a limiting component and a positioning component; The limiting component includes a limiting plate (1); the limiting plate (1) is connected to a vertical plate (2), a pin (3) and a modified hexagonal nut (5); the vertical plate (2) is connected to a retaining ring (4); the limiting plate (1) is connected to the door lock mounting hole through the modified hexagonal nut (5), a modified internal hexagon countersunk screw I (6) matching the modified hexagonal nut (5) and the pin (3); The positioning assembly includes a positioning plate (10); the positioning plate (10) is connected to a long pin shaft (11) and a short pin shaft (12) respectively; the positioning plate (10) is connected to the mounting holes of the vehicle body side panel through modified internal hexagon countersunk screws II (13); The long pin (11) can engage with the snap ring (4) so ​​that the door and body are opened by the door opening robot during the automatic painting process. After the internal painting robot finishes painting the inner opening of the door, the door opening robot closes the door and the door will not be opened again. The clamping distance of the snap ring (4) is 5mm ± 0.05mm. The clamping force range between the long pin (11) and the snap ring (4) is controlled within 60N-80N. The shape of the snap ring (4) should be suitable for the long pin (11). The limiting plate (1), the upright plate (2), the pin (3) and the modified hexagonal nut (5) are all connected by welding. The upright plate (2) stands in the middle of the limiting plate (1). The pin (3) and the modified hexagonal nut (5) are located on the left and right sides of the limiting plate (1) respectively. The snap ring (4) is parallel to the limiting plate (1). The snap ring (4) is connected to the upright plate (2) by the internal hexagonal screw (7), the washer (8) and the hexagonal nut (9). The long pin (11) is welded and fixed to the upper end of the positioning plate (10). The short pin (12) and the modified internal hexagonal countersunk screw II (13) are located on the left and right sides of the lower end of the positioning plate (10) respectively. The short pin (12) is welded and fixed to the positioning plate (10). The limiting plate (1) is 50mm×85mm in size and 3mm thick, made of 202 stainless steel plate; the modified hexagonal nut (5) is M8 in size and made of 202 stainless steel; the modified internal hexagon countersunk screw I (6) is M8×20 in size and made of 202 stainless steel, with a performance grade of 8.8, galvanized, and fully threaded; the pin (3) is Φ10×16 in size and made of 202 stainless steel round bar; the distance between the center point of the pin (3) and the center point of the modified internal hexagon countersunk screw I (6) is 59.5±0.1mm; the upright plate (2) is 23mm×25mm in size and 3mm thick, made of 202 stainless steel plate; the internal hexagonal screw (7) is M5×12 in size and has a performance grade of 8.8, galvanized, and fully threaded; The performance grade is 8.8 and galvanized; the gasket (8) is D5 and has a performance grade of 8.8 and is galvanized; the hexagonal nut (9) is M5 and has a performance grade of 8.8 and is galvanized; the snap ring (4) is a 15mm spring sheet with a thickness of 0.8mm and is made of CK75 spring steel sheet; the positioning plate (10) has a specification of 18mm×58mm and a thickness of 3mm and is made of 202 stainless steel plate; the long pin (11) has a specification of Φ8×35 and is made of 202 stainless steel round bar; the short pin (12) has a specification of Φ6×20 and is made of 202 stainless steel round bar; the distance between the center point of the short pin (12) and the center point of the modified internal hexagon countersunk screw II (13) is 36±0.1mm.

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