Vehicle body paint film detecting and positioning device

Abstract

The utility model relates to the technical field of vehicle body spraying, in particular to a vehicle body paint film detecting and positioning device which comprises a plurality of positioning main bodies and fixing assemblies used for fixing the positioning main bodies on a vehicle body, each positioning main body is provided with a plurality of positioning parts and a plurality of detecting through holes, and the fixing assemblies are connected with the positioning main bodies respectively. The plurality of positioning main bodies are used for covering different parts of a vehicle body respectively, and all the positioning main bodies are made of flexible materials. The positioning main body can be fixed on a vehicle body through the fixing assembly, and then the positioning main body and the vehicle body are positioned through the positioning part, so that the detection through holes are located at the same point during each detection, the detection point of the film thickness gauge is prevented from deviating, and the detection precision of the paint spraying thickness is ensured.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body painting technology, and more specifically, to a vehicle body paint film detection and positioning device. Background Technology

[0002] During the new model introduction phase, in the development of paint body colors, differences in the film thickness applied by robots at different locations on the body can lead to color variations across the vehicle. The main steps involved in ensuring film thickness uniformity during the new color development phase include: 1. Electrophoresis: After electrophoresis is completed on the body-in-white, the film thickness must be checked to ensure it meets standards and that the film thickness is uniform throughout the vehicle, guaranteeing the body's corrosion resistance. Through multi-point testing, the voltage at different stages of the electrophoresis process is adjusted to ensure the electrophoretic film thickness meets standards and, to the maximum extent... The process involves several steps: 1. Optimizing the uniformity of the electrophoretic film thickness; 2. In the intermediate coat process, before hue development, the film thickness of the intermediate coat must be ensured to be within a certain range to guarantee the UV protection of the coating and the fullness of the composite coating; 3. In the color coat process, the color coat is the main coating for hue development and also plays a major role in masking. Film thickness uniformity is crucial for hue adjustment; 4. In the clear coat process, the clear coat is the final spraying process. The film thickness of the clear coat has a significant impact on the smoothness of the paint surface. The better the film thickness uniformity, the better the smoothness. In each of the above steps, the paint film thickness needs to be precisely controlled. Only when the paint film thickness is uniform throughout the vehicle body can the consistent paint color be guaranteed.

[0003] Currently, the commonly used method for measuring paint film thickness involves applying high-temperature masking tape to the vehicle body, spraying paint, and then peeling off the masking tape to expose the previous coating. The difference in paint film thickness between the masked and uncovered areas is used to determine the thickness of a single layer. This method is known as the "stretching method" in the painting industry. However, the stretching method suffers from several drawbacks. The thickness gauge is positioned slightly off-center during measurement, resulting in inaccurate readings. Furthermore, the stretching method requires applying high-temperature masking tape after each coat, wasting time. Incomplete application of the masking tape can also occur, leading to bubbles within the tape. These bubbles can cause periodic bubbling during baking, affecting the film thickness measurement around the tape area after drying. Utility Model Content

[0004] To overcome the shortcomings of the prior art where the film thickness gauge is offset and not measuring the same point, resulting in errors in the measured data, this utility model provides a vehicle body paint film detection and positioning device to assist the film thickness gauge in positioning, reduce measurement errors, and improve measurement accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a vehicle body paint film detection and positioning device, comprising: multiple positioning bodies, fixing components for fixing the positioning bodies to the vehicle body respectively, the positioning bodies are respectively provided with a number of positioning parts and multiple detection through holes, the fixing components are respectively connected to the multiple positioning bodies, the multiple positioning bodies are respectively used to cover different parts of the vehicle body, and all the positioning bodies are made of flexible material.

[0006] The positioning body is equipped with a positioning section and a detection through-hole. The positioning section is used to position the positioning body against the vehicle body, ensuring that after each paint spraying, the positioning body is fixed in the same position on the vehicle body through the positioning action of the positioning section. Different positioning bodies cover different parts of the vehicle body, thus covering all parts of the vehicle body where the paint film thickness needs to be measured. The detection through-hole is used to expose the surface of the vehicle body to provide a detection point for the film thickness gauge. After each paint spraying, when the positioning body is fixed to the vehicle body, the detection through-hole is always in the same position, thus ensuring that the film thickness gauge can accurately measure the same points. By subtracting the paint thickness of the previous measurement from the paint thickness of the later measurement, the coating thickness of the outermost layer of paint can be obtained. Compared with the traditional strip method, this device does not need to damage the paint surface when measuring paint thickness, and it can accurately position the body, resulting in better performance and facilitating the development of vehicle body paint colors. The positioning body is made of flexible material, which allows it to fit the vehicle body better and ensures the positioning accuracy of the detection through hole. Flexible plastic film, various types of fabric, etc., can be used. The positioning part can use an outer contour line that matches the vehicle body, or it can use markings that correspond to obvious raised lines or openings on the vehicle body. Different positioning markings can be set according to different vehicle models to achieve the positioning function. The fixing components can be fixed using tape, clips, or magnets.

[0007] Preferably, the fixing component includes a plurality of magnets connected to the positioning body.

[0008] The bodies of ordinary car models are all made of iron. Magnets are used as the main fixing components to make it easy to attach the positioning object directly to the car body. Once attached, it is easy to adjust the position and make it easy to align.

[0009] Preferably, the fixing component further includes an adhesive for fixing the magnet to the positioning body, wherein the outer surface of the magnet is covered by the adhesive and the positioning body.

[0010] An adhesive piece is used to fix the magnet to the positioning body. At the same time, the adhesive piece and the positioning body together cover the surface of the magnet, that is, wrap the magnet to prevent the magnet from directly contacting the car body and scratching the paint. Specifically, the adhesive piece can be made of the same material as the positioning body, and then glued to the positioning body with glue, so that the magnet is pasted between the adhesive piece and the positioning body. Alternatively, a sufficiently large piece of tape or adhesive strip can be used to directly stick the magnet to the positioning body.

[0011] Preferably, the positioning portion includes contoured edge portions respectively disposed on the edge of the positioning body.

[0012] The contoured edge is used to align with the edge of the vehicle body structure. By setting different shapes of contoured edge parts for each part of the vehicle body structure, the edge of the positioning subject is the same as or similar to each part of the vehicle body, thereby achieving alignment.

[0013] Preferably, the positioning part further includes a handle marking part and a fuel tank cap marking part respectively disposed on the positioning body.

[0014] Generally, the front and rear doors of a vehicle are equipped with handle recesses, and the fuel tank cap is located on the rear fender. The handle markings are used to align with the handle recesses, and the fuel tank cap markings are used to align with the fuel tank cap. The handle markings are set on the corresponding positioning bodies on the front and rear doors, and the fuel tank cap markings are set on the corresponding positioning bodies on the rear fender, thus improving positioning accuracy.

[0015] Preferably, the positioning body is also provided with a number, and each of the detection through holes is provided with a corresponding number.

[0016] Each time the film thickness gauge performs a test, it measures the film thickness through the test hole. Each test hole is marked with a corresponding number to help staff confirm the location and avoid calculation errors. The numbering is sequential, such as numerical or alphabetic.

[0017] Preferably, the number is provided on both sides of the positioning body.

[0018] The two sides of the vehicle body are symmetrical, meaning that the corresponding positioning bodies for the front fender, front door, rear door, and rear fender can be shared by both sides of the vehicle body. In this way, each positioning body is assigned a number to meet the usage requirements.

[0019] Preferably, the detection holes are arranged on the positioning body according to a set trajectory.

[0020] To facilitate process adjustments, the positions of the inspection holes are arranged according to the paint spraying trajectory. The aforementioned trajectory includes the paint spraying trajectory and can also be arranged according to the streamlined shape of the vehicle body.

[0021] Preferably, the main material of the positioning body is a transparent material.

[0022] Using a transparent material makes alignment easier, and the handle markings mentioned above are also visible on both sides of the positioning body. Specifically, the positioning body also uses a transparent plastic film, or a transparent plastic film with a grid, where the grid portion is used to reinforce the film's strength and is not transparent; the film itself is transparent.

[0023] Preferably, the diameter of the detection through hole is no greater than 1 cm.

[0024] The diameter of the detection hole is no more than 1 cm, which can further improve the positioning accuracy while meeting the detection requirements.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. The positioning body can be fixed to the vehicle body by the fixing component, and then the positioning part is positioned with the vehicle body, so that the detection through hole is located at the same point every time the test is performed, thereby avoiding the offset of the film thickness gauge detection point and ensuring the accuracy of paint thickness detection.

[0027] 2. Each detection hole is labeled with a number to facilitate the collection and organization of measurement data and to avoid calculation errors. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the first embodiment of the vehicle body paint film detection and positioning device of this utility model;

[0029] Figure 2 This is a schematic diagram of the second embodiment of the vehicle body paint film detection and positioning device of this utility model;

[0030] Figure 3 This is a schematic diagram of the third embodiment of the vehicle body paint film detection and positioning device of this utility model;

[0031] Figure 4 This is a schematic diagram of the fourth embodiment of the vehicle body paint film detection and positioning device of this utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the fixing component of a vehicle body paint film detection and positioning device according to this utility model.

[0033] In the diagram: 1. Positioning body; 2. Fixing component; 201. Magnet; 202. Adhesive component; 3. Positioning part; 301. Contour edge part; 302. Handle marking part; 303. Fuel tank cap marking part; 4. Inspection through hole; 5. Numbering. Detailed Implementation

[0034] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0035] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0037] Example 1

[0038] like Figure 1-5 As shown, a vehicle body paint film detection and positioning device includes: multiple positioning bodies 1, and fixing components 2 for fixing the positioning bodies 1 to the vehicle body respectively. The positioning bodies 1 are respectively provided with a number of positioning parts 3 and multiple detection through holes 4. The fixing components 2 are respectively connected to the multiple positioning bodies 1. The multiple positioning bodies 1 are respectively used to cover different parts of the vehicle body. All positioning bodies 1 are made of flexible material.

[0039] The positioning body 1 is equipped with a positioning part 3 and a detection through hole 4. The positioning part 3 is used to position the positioning body 1 to the vehicle body, thereby ensuring that after each paint spraying, the positioning body 1 can be fixed to the same position on the vehicle body through the positioning action of the positioning part 3. Different positioning bodies 1 cover different parts of the vehicle body, thereby covering all parts of the vehicle body where the paint film thickness needs to be measured. The detection through hole 4 is used to expose the surface of the vehicle body and to provide a detection point for the film thickness gauge. After each paint spraying, when the positioning body 1 is fixed to the vehicle body, the detection through hole 4 is always in the same position, thereby ensuring that the film thickness gauge can accurately measure the same point. By subtracting the paint thickness measured in the previous measurement from the paint thickness measured in the later measurement, the coating thickness of the outermost paint layer can be obtained. Compared with the traditional strip method, this device does not need to damage the paint surface when measuring the paint thickness, and can accurately position the paint, resulting in better performance and facilitating the development of vehicle body paint colors. The positioning body 1 is made of flexible material, which allows it to fit the vehicle body better and ensures the positioning accuracy of the detection through hole 4. Flexible plastic film, various types of fabric, etc., can be used. The positioning part 3 can use an outer contour line that matches the vehicle body, or it can use markings that correspond to obvious raised lines or openings on the vehicle body. Different positioning markings can be set according to different vehicle models to achieve the positioning function. The fixing component 2 can be fixed using tape, clips, or magnets.

[0040] The beneficial effects of this embodiment are as follows: the positioning body 1 can be fixed to the vehicle body by the fixing component 2, and then the positioning part 3 is used to position it to the vehicle body, so that the detection through hole 4 is located at the same point each time the test is performed, thereby avoiding the offset of the film thickness gauge detection point and ensuring the detection accuracy of paint thickness.

[0041] Example 2

[0042] The difference between Example 1 and Example 2 is as follows:

[0043] like Figure 1-5 As shown, the fixing assembly 2 includes multiple magnets 201 connected to the positioning body 1. The fixing assembly 2 also includes adhesive pieces 202 for fixing the magnets 201 to the positioning body 1, with the outer surface of the magnets 201 covered by the adhesive pieces 202 and the positioning body 1. The positioning part 3 includes contoured edge portions 301 respectively disposed on the edge of the positioning body 1. The positioning part 3 also includes a handle marking portion 302 and a fuel tank cap marking portion 303 respectively disposed on the positioning body 1.

[0044] The bodies of ordinary car models are made of iron. Magnets 201 are used as the main fixing component of the fixing assembly 2, allowing the positioning body 1 to be easily attached directly to the car body for easy fixation and adjustment. An adhesive piece 202 is provided to fix the magnet 201 to the positioning body 1. Both the adhesive piece 202 and the positioning body 1 together cover the surface of the magnet 201, encasing it to prevent direct contact with the car body and avoid scratching the paint. Specifically, the adhesive piece 202 can be made of the same material as the positioning body 1, and glued to it, with the magnet 201 adhered between the adhesive piece 202 and the positioning body 1. Alternatively, sufficiently large pieces of tape or adhesive cloth can be used to directly attach the magnet 201 to the positioning body 1. The contoured edge portion 301 is used to align with the edge of the vehicle body structure. By setting different shapes of contoured edge portions 301 on each part of the vehicle body structure, the edge of the positioning body 1 is the same as or similar to each part of the vehicle body, thereby achieving alignment. Generally, the front and rear doors of the vehicle body are provided with handle grooves, and the fuel tank cap is provided at the rear fender position. A handle marking portion 302 is provided for alignment with the handle groove, and a fuel tank cap marking portion 303 is provided for alignment with the fuel tank cap. The handle marking portion 302 is respectively set on the positioning body 1 at the corresponding front and rear door positions, and the fuel tank cap marking portion is set on the positioning body 1 at the corresponding rear fender position, thereby improving positioning accuracy.

[0045] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0046] Example 3

[0047] Based on Example 1 or Example 2, Example 1 or Example 2 are further defined, with the following differences:

[0048] like Figure 1-4 As shown, the positioning body 1 is also equipped with a number 5, and each detection through-hole 4 is correspondingly numbered 5. Number 5 is also provided on both sides of the positioning body 1. The detection through-holes 4 are arranged on the positioning body 1 according to a set trajectory. The main material of the positioning body 1 is transparent. The diameter of the detection through-hole 4 is no greater than 1 cm.

[0049] The film thickness gauge performs each measurement through the detection through-hole 4. A corresponding number 5 is assigned next to each detection through-hole 4 to assist staff in confirming the location and avoiding calculation errors. The number 5 uses sequential numbering, such as the numerical number 5 or the letter 5. The two sides of the vehicle body are symmetrical, meaning the corresponding positioning bodies 1 for the front fender, front door, rear door, and rear fender can be shared by both sides. Therefore, a number 5 is assigned to both sides of the positioning body 1 to meet usage requirements. To facilitate process adjustments, the detection through-holes 4 are arranged according to the paint spray trajectory. This trajectory includes the paint spray trajectory and can also be arranged according to the streamlined shape of the vehicle body. Using a transparent material facilitates alignment, and the aforementioned handle marking 302 is visible on both sides of the positioning body 1. Specifically, the positioning body 1 also uses a transparent plastic film, or a transparent plastic film with a grid. The grid portion is used to strengthen the film and is not transparent; the film itself is transparent. The diameter of the detection through-hole 4 is no greater than 1 cm, thus further improving positioning accuracy while meeting measurement requirements.

[0050] refer to Figure 1-4 , Figure 1 The positioning body 1 shown is fixed to the front fender of the vehicle body during operation. Figure 2 The positioning body 1 shown is fixed to the front door of the vehicle body during operation. Figure 3 The positioning body 1 shown is fixed to the rear door of the vehicle body during operation. Figure 4 The positioning body 1 shown is fixed to the rear fender of the vehicle body during operation.

[0051] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0052] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0053] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A vehicle body paint film detection and positioning device, characterized in that, include: Multiple positioning bodies (1) and fixing components (2) for fixing the positioning bodies (1) to the vehicle body respectively. The positioning bodies (1) are provided with a number of positioning parts (3) and a number of detection through holes (4). The fixing components (2) are connected to the multiple positioning bodies (1) respectively. The multiple positioning bodies (1) are used to cover different parts of the vehicle body. All the positioning bodies (1) are made of flexible material.

2. The vehicle body paint film detection and positioning device according to claim 1, characterized in that: The fixing component (2) includes a plurality of magnets (201) connected to the positioning body (1).

3. The vehicle body paint film detection and positioning device according to claim 2, characterized in that: The fixing component (2) further includes an adhesive (202) for fixing the magnet (201) to the positioning body (1), wherein the outer surface of the magnet (201) is covered by the adhesive (202) and the positioning body (1).

4. The vehicle body paint film detection and positioning device according to claim 3, characterized in that: The positioning part (3) includes contoured edge parts (301) respectively disposed on the edge of the positioning body (1).

5. The vehicle body paint film detection and positioning device according to claim 4, characterized in that: The positioning part (3) also includes a handle marking part (302) and a fuel tank cap marking part (303) respectively provided on the positioning body (1).

6. The vehicle body paint film detection and positioning device according to claim 3, characterized in that: The positioning body (1) is also provided with a number (5), and each of the detection through holes (4) is provided with the corresponding number (5).

7. The vehicle body paint film detection and positioning device according to claim 6, characterized in that: The positioning body (1) is provided with the number (5) on both sides respectively.

8. The vehicle body paint film detection and positioning device according to claim 1, characterized in that: The detection holes (4) are arranged on the positioning body (1) according to a set trajectory.

9. The vehicle body paint film detection and positioning device according to claim 1, characterized in that: The main material of the positioning body (1) is transparent.

10. The vehicle body paint film detection and positioning device according to claim 1, characterized in that: The diameter of the detection through hole (4) is no greater than 1 cm.

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