Vehicle lamp mask defect detection device

Abstract

The utility model provides a car lamp mask defect detection device, which comprises a supporting mechanism, the supporting mechanism is provided with a flexible telescopic or splicable adjusting assembly, and the adjusting assembly comprises a size adjusting assembly and a height adjusting assembly. The adjusting assembly allows a user to freely adjust the opening size and height of the supporting mechanism according to actual needs; the liquid separation mechanism is arranged on the supporting mechanism and is adjusted along with the adjustment of the adjusting assembly, and testing liquid is placed in the liquid separation mechanism; the fixing mechanism is used for fixing the liquid separation mechanism on the supporting mechanism; and the temperature adjusting mechanism is connected with the liquid separating mechanism and is used for heating the test liquid in the liquid separating mechanism and controlling the temperature of the test liquid. The residual stress detection problem of environmental stress cracking of the vehicle lamp mask is solved, the flexibility of a measuring container is further improved, and the detection range of the vehicle lamp mask is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle equipment detection, and more specifically to a device for detecting defects of a vehicle lamp mask. Background Art

[0002] Polymethyl methacrylate (PMMA) and polycarbonate (PC) are often used as glass substitutes for the manufacture of automotive headlight shields due to their excellent optical and mechanical properties. However, these polymers may generate residual stress during the processing of headlight shields. When the residual stress is too large, the headlight shield may experience stress cracking after contact with certain specific chemicals, such as windshield washer fluid or car wash fluid, which will damage the appearance and function of the headlights. In order to address this problem, the industry has taken a variety of measures, such as optimizing the injection molding process, improving the design of parts and molds, improving the welding process of the shield, and adding tempering treatment, to minimize the residual stress after the assembly of parts and reduce the risk of stress cracking. At the same time, a variety of methods for detecting stress cracking defects in such materials and parts have been developed to identify defects and verify the effect of process optimization. Although standards such as GB / T 43316 and ISO 22088 provide test methods for the environmental stress cracking resistance of plastics, these methods mainly focus on the characteristics of raw materials and cannot be directly used to evaluate the risk of stress cracking after the material is processed into a headlight shield. In addition, the conditions in these test methods, such as bending and needle pressure, do not fully correspond to the actual stress state of the material after it is processed into a component.

[0003] To more accurately assess the actual stress cracking risk of parts, various automobile manufacturers have developed corresponding test standards. These standards usually involve immersing the entire lamp mask and weld area in the test solution for a period of time to evaluate the stress cracking of the part surface. However, this method has limitations: the size of the experimental container limits the size of the lamp that can be tested. For large or irregularly designed lamps, such as through-lamps with a length of more than 1200mm, it is difficult to find a container large enough. In addition, this method consumes a lot of chemical reagents.

[0004] Although there is a standard method of spraying chemical media with a spray bottle, due to factors such as flow and surface tension, the spraying method cannot ensure uniform and effective coverage of the chemical media on the surface of the lampshade. In addition, according to a large number of after-sales and actual defect cases, temperature load is an important factor in causing stress cracking of the lamp cover. At present, the industry's test experiments on environmental stress cracking of headlight covers are all carried out at room temperature, and the risk of stress cracking of lamps under actual temperature changes has not been fully examined. Although the industry has taken a series of measures and developed a variety of test methods, there are still many challenges and limitations in assessing the risk of stress cracking of headlight covers under actual use conditions. In order to solve these problems, it is necessary to continue in-depth research and develop more accurate, efficient and practical test methods and process optimization means. Utility Model Content

[0005] The utility model provides a device for detecting defects of a headlight mask, aiming to solve the problem of residual stress detection of environmental stress cracking of the headlight mask, further improve the flexibility of the measuring container, and expand the detection range of the headlight mask.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a detection device for defects of a headlight cover, which is used to detect the ring cracking defects of the headlight cover. The detection device comprises:

[0007] A support mechanism, wherein the support mechanism is provided with an adjustment component, and the adjustment component includes a size adjustment component and a height adjustment component;

[0008] A liquid isolating mechanism, which is placed on the supporting mechanism and is adjusted along with the adjustment of the adjusting assembly, wherein the testing liquid is placed in the liquid isolating mechanism;

[0009] A fixing mechanism, wherein the fixing mechanism fixes the liquid isolation mechanism on the supporting mechanism;

[0010] A temperature regulating mechanism is connected to the liquid isolating mechanism to heat and control the temperature of the test liquid in the liquid isolating mechanism.

[0011] In one embodiment, a flow guide component is disposed on the surface of the liquid isolation mechanism, and the flow guide component is in contact with the test liquid and the surface of the headlight mask.

[0012] In one embodiment, the material used for the liquid isolation mechanism is polyethylene terephthalate, polypropylene, artificial fiber or natural fiber.

[0013] In one embodiment, the fixing means of the fixing mechanism include one or more of adhesion, snapping, clamping, and zipper.

[0014] In one embodiment, the test liquid includes an alcohol solution or a car wash solution.

[0015] In one embodiment, the temperature adjustment mechanism includes a temperature control unit and a conductive component, the temperature control unit is connected to the conductive component, and the conductive component is connected to the liquid isolation mechanism.

[0016] In one embodiment, the conductive component is one of conductive carbon black, chopped carbon fiber, composite resistance wire or resistance sheet.

[0017] In one embodiment, the temperature adjustment mechanism includes a temperature control unit, a temperature control circulation pump and a conduit, and the conduit is connected to the temperature control unit and the temperature control circulation pump.

[0018] In one embodiment, both ends of the conduit are placed in the liquid isolation mechanism to uniformly control the temperature of the detection liquid.

[0019] In one embodiment, the size adjustment component and the height adjustment component are both configured for telescopic adjustment or splicing adjustment.

[0020] The utility model has the following beneficial effects:

[0021] 1. Improve the flexibility of size adjustment: It has strong adaptability to the size of the headlight mask and can be widely used in stress crack detection of lamps of different sizes and shapes, significantly improving the effective utilization of the test space.

[0022] 2. Improve the utilization rate of the test liquid: The surface of the liquid isolation mechanism has a flow-guiding structure, which can maximize the utilization rate of chemical reagents, greatly reduce the amount of liquid used in a single test, and ensure that the mask surface can be evenly covered by the reagent.

[0023] 3. Expand the scope of testing for headlight covers: Test the environmental stress cracking risk of headlight covers under different temperatures and chemical media according to actual working conditions. This provides companies with more comprehensive and real test data, helping them better understand product performance and discover potential problems in advance, thereby ensuring product quality and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a device for detecting defects of a headlight cover according to an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a support mechanism of a device for detecting defects of a headlight cover according to an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the structure of the liquid isolation mechanism of the device for detecting defects of a headlight cover according to an embodiment of the utility model

[0027] Figure 4It is a schematic diagram of the installation of the temperature regulating mechanism of the device for detecting defects of the headlight cover according to one embodiment of the utility model;

[0028] Figure 5 It is a schematic diagram of the assembly of a device for detecting defects of a headlight cover according to an embodiment of the utility model;

[0029] Figure 6 A schematic diagram of a detection process of a through taillight according to an embodiment of the utility model;

[0030] Figure 7 The figure is a schematic diagram of the detection process of the split taillight according to an embodiment of the present utility model.

[0031] Among them, 100 is a supporting mechanism; 110 is an adjusting component; 200 is a liquid isolating mechanism; 300 is a fixing mechanism; and 400 is a temperature regulating mechanism. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] Figure 1 The structure diagram of the detection device of the defect of the headlight cover of an embodiment of the utility model is shown in FIG. The intelligent detection device is used to detect the ring cracking defect of the headlight cover. The detection device includes:

[0034] A support mechanism 100, wherein the support mechanism 100 is provided with an adjustment component 110, and the adjustment component 110 includes a size adjustment component and a height adjustment component;

[0035] A liquid isolating mechanism 200, wherein the liquid isolating mechanism 200 is placed on the supporting mechanism 100 and is adjusted along with the adjustment of the adjusting assembly 110, and a test liquid is placed in the liquid isolating mechanism 200;

[0036] A fixing mechanism 300, wherein the fixing mechanism 300 fixes the liquid isolation mechanism 200 on the supporting mechanism 100;

[0037] The temperature regulating mechanism 400 is connected to the liquid isolating mechanism 200 to heat and control the temperature of the test liquid in the liquid isolating mechanism 200.

[0038] Specifically, the material of the liquid isolation mechanism 200 has excellent compactness, which can effectively isolate the liquid and prevent penetration and leakage. It also has excellent chemical resistance, which enables it to remain stable when in contact with various chemicals and is not prone to chemical reactions or degradation. At the same time, the material also has good temperature resistance, which can maintain stability in high temperature environments and maintain flexibility under low temperature conditions, and is not prone to hardening or embrittlement.

[0039] Furthermore, the liquid isolating mechanism 200 also has good drape and softness, which enables it to easily fit various irregular surfaces, whether curved or concave and convex, and can achieve good conformability and maintain tightness and stability of fit.

[0040] Furthermore, if Figure 2 As shown, the support mechanism 100 is equipped with a flexible, retractable or splicable adjustment component 110, which allows the user to freely adjust the opening size and height of the support mechanism 100 according to actual needs. Whether it is necessary to reduce the size to fit a small space, or to increase the size to support larger items, this adjustment component 110 can easily cope with it. In addition, through the adjustment component 110, the user can also conveniently adjust the height of the entire device to meet the detection needs of vehicle lights of different sizes.

[0041] Furthermore, if Figure 5 As shown, the liquid isolation mechanism 200 is placed on the opening of the supporting mechanism 100, and the liquid isolation mechanism 200 and the supporting mechanism 100 are adjusted so that the liquid isolation mechanism 200 has a suitable area to cover the entire vehicle lamp to be tested, and then the liquid isolation mechanism 200 can be fixed on the supporting mechanism 100 by the fixing mechanism 300.

[0042] Furthermore, the fixing mechanism 300 is a clamping structure.

[0043] In one embodiment, Figure 3 As shown, a flow guide component is disposed on the surface of the liquid isolation mechanism 200, and the flow guide component is in contact with the test liquid and the surface of the headlight mask.

[0044] Specifically, the surface of the flow guide component is provided with protrusions. When the liquid isolation mechanism 200 is closely attached to the headlight mask, the test liquid can smoothly pass through these protruding flow guide structures and form a closer contact with the mask surface. The function of the flow guide structure is not only to guide the flow of the liquid, but also to ensure that the liquid can evenly and fully infiltrate every inch of the mask surface, thereby more accurately simulating the liquid distribution in the actual use scenario and providing more reliable data support for subsequent test analysis.

[0045] In one embodiment, the material used for the liquid isolation mechanism 200 is polyethylene terephthalate, polypropylene, artificial fiber or natural fiber.

[0046] Specifically, in terms of material selection, the material of the liquid isolation mechanism 200 can be polyethylene terephthalate, polypropylene, or artificial fiber or natural fiber. These materials are carefully selected and processed to ensure that they can perform optimally in various application scenarios and meet different usage requirements.

[0047] In one embodiment, the fixing method of the fixing mechanism 300 includes one or more of adhesion, snapping, clamping, and zipper.

[0048] In one embodiment, the test liquid includes an alcohol solution or a car wash solution.

[0049] In one embodiment, Figure 4 As shown, the temperature adjustment mechanism 400 includes a temperature control unit and a conductive component, the temperature control unit is connected to the conductive component, and the conductive component is connected to the liquid isolation mechanism 200.

[0050] In one embodiment, the conductive component is one of conductive carbon black, chopped carbon fiber, composite resistance wire or resistance sheet.

[0051] Specifically, the conductive carbon black, chopped carbon fiber, composite resistance wire or resistance sheet are all conductive, so that the test liquid in the isolation mechanism and the lampshade of the vehicle lamp are at a uniform temperature.

[0052] In one embodiment, the temperature adjustment mechanism 400 includes a temperature control unit, a temperature control circulation pump and a conduit, and the conduit is connected to the temperature control unit and the temperature control circulation pump.

[0053] In one embodiment, both ends of the conduit are placed in the liquid isolation mechanism 200 to uniformly control the temperature of the detection liquid.

[0054] Specifically, the temperature regulating mechanism 400 can evenly heat and control the temperature of the lampshade and the liquid chemical medium placed in the liquid isolating mechanism 200. The even heating can be achieved through two solutions.

[0055] Solution 1: The temperature regulating mechanism 400 includes a temperature control unit and a conductive component, and uses the liquid isolation mechanism 200 as a heating medium to directly heat the headlight mask and the liquid chemical medium placed in the liquid isolation mechanism 200. At this time, the liquid isolation mechanism 200 can be provided with a uniform electric heating function by adding conductive carbon black or chopped carbon fiber to the liquid isolation mechanism 200, or a composite resistance wire or resistance sheet can be added to the isolation layer of the liquid isolation mechanism 200 to achieve the same purpose. Then the temperature of the liquid isolation mechanism 200 is adjusted and controlled by the temperature control unit.

[0056] Solution 2: The temperature control mechanism 400 includes a temperature control unit, a temperature control circulation pump and a catheter. The temperature control circulation pump is used to heat and circulate the liquid chemical medium in the liquid isolation mechanism 200, thereby achieving the purpose of uniform temperature control. The two ends of the catheter are respectively inserted below the liquid level on both sides of the liquid isolation mechanism 200, and the liquid chemical medium in the liquid isolation mechanism 200 is circulated by the temperature control circulation pump, and the circulating liquid is heated and temperature-controlled by the temperature control unit.

[0057] In one embodiment, the size adjustment component and the height adjustment component are both configured for telescopic adjustment or splicing adjustment.

[0058] Specific implementation example of scheme 1: Figure 6 As shown, the opening size and height of the support mechanism 100 are adjusted according to the size of the through taillight to be measured, ensuring that the opening can accommodate the size of the through taillight and the opening height is higher than the vertical height of the through taillight.

[0059] Place the liquid isolation mechanism 200 made of polyethylene terephthalate compounded with conductive carbon black on the opening of the support mechanism 100, adjust the adjustment component 110 to a suitable area so that the liquid isolation mechanism 200 can cover the entire through-taillight, and finally fix the liquid isolation mechanism 200 on the opening of the support mechanism 100 through the fixing mechanism 300.

[0060] 40% ethanol solution is injected into the isolation mechanism 200 until the liquid level can immerse the entire taillight mask and the welding line. The heating temperature of the electrically heated isolation mechanism 200 is controlled by the temperature control unit of the temperature regulating mechanism 400, and the temperature of the ethanol solution in the isolation mechanism 200 is controlled to 40±2°C.

[0061] Place the through-taillight mask face downward into the liquid isolation mechanism 200, immerse the entire taillight mask and welding line for 15 minutes, then take out the through-taillight, and after standing at room temperature for 30 minutes, evaluate the stress cracking of the mask surface and its welding position.

[0062] Specific implementation example of scheme 2: Figure 7 As shown, the opening size and height of the support mechanism 100 are adjusted according to the size of the split taillight to be tested, ensuring that the opening can accommodate the size of the through taillight and the opening height is higher than the vertical height of the through taillight.

[0063] The liquid isolating mechanism 200 made of polypropylene is placed on the opening of the supporting mechanism 100 , and is adjusted to a suitable area to cover all the lamps to be tested, and the liquid isolating mechanism 200 is fixed on the opening of the supporting mechanism 100 by means of an adhesive fixing mechanism 300 .

[0064] Inject car washing liquid into the liquid isolation mechanism 200 until the liquid level can submerge all the taillight masks and welding lines, insert the two ends of the conduit of the temperature regulating mechanism 400 below the liquid level of the car washing liquid on both sides of the liquid isolation mechanism 200, circulate the car washing liquid in the liquid isolation mechanism 200 through a temperature-controlled circulation pump, and heat and control the circulating car washing liquid to 60±1°C through a temperature control unit.

[0065] Place the split mask facing downward into the liquid isolation mechanism 200 to immerse the entire taillight mask and welding line. After 30 minutes, take out all the taillight samples and leave them at room temperature for 60 minutes to evaluate the stress cracking of the mask surface and its welding position.

[0066] The utility model has the following beneficial effects:

[0067] 1. Improve the flexibility of size adjustment: It has strong adaptability to the size of the headlight mask and can be widely used in stress crack detection of lamps of different sizes and shapes, significantly improving the effective utilization of the test space.

[0068] 2. Improve the utilization rate of the test liquid: The surface of the liquid isolation mechanism has a flow-guiding structure, which can maximize the utilization rate of chemical reagents, greatly reduce the amount of liquid used in a single test, and ensure that the mask surface can be evenly covered by the reagent.

[0069] 3. Expand the scope of testing for headlight covers: Test the environmental stress cracking risk of headlight covers under different temperatures and chemical media according to actual working conditions. This provides companies with more comprehensive and real test data, helping them better understand product performance and discover potential problems in advance, thereby ensuring product quality and safety.

[0070] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0071] It should be noted that, in the present application, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. It should also be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0072] In addition, it should be noted that, unless otherwise clearly specified and limited, words such as "connect" and "drive" used in the description of this application should be understood in a broad sense, which can be direct, through an intermediate medium, or the relationship between two elements. Technical personnel in the field can understand their specific meanings in this application based on the specific circumstances.

[0073] The above embodiments are provided for persons familiar with the art to implement or use the present application. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the application concept of the present application. Therefore, the protection scope of the present application is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A device for detecting defects in a headlight cover, characterized in that: The device for detecting defects of a headlight cover comprises: A support mechanism, wherein the support mechanism is provided with an adjustment component, and the adjustment component includes a size adjustment component and a height adjustment component; A liquid isolating mechanism, which is placed on the supporting mechanism and is adjusted along with the adjustment of the adjusting assembly, wherein the testing liquid is placed in the liquid isolating mechanism; A fixing mechanism, wherein the fixing mechanism fixes the liquid isolation mechanism on the supporting mechanism; A temperature regulating mechanism is connected to the liquid isolating mechanism to heat and control the temperature of the test liquid in the liquid isolating mechanism.

2. The device for detecting defects of a headlight cover according to claim 1, characterized in that: A flow guide component is arranged on the surface of the liquid isolation mechanism, and the flow guide component is in contact with the test liquid and the surface of the headlight mask.

3. The device for detecting defects of a headlight cover according to claim 2, characterized in that: The material used for the liquid isolating mechanism is one of polyethylene terephthalate, polypropylene, artificial fiber or natural fiber.

4. The device for detecting defects of a headlight cover according to claim 1, characterized in that: The fixing methods of the fixing mechanism include one or more of adhesion, buckle, support, and zipper.

5. The device for detecting defects of a headlight cover according to claim 1, characterized in that: The test liquid includes an alcohol solution or a car wash liquid.

6. The device for detecting defects of a headlight cover according to claim 1, characterized in that: The temperature regulating mechanism comprises a temperature control unit and a conductive component, wherein the temperature control unit is connected to the conductive component, and the conductive component is connected to the liquid isolation mechanism.

7. The device for detecting defects of a headlight cover according to claim 6, characterized in that: The conductive component is one of conductive carbon black, chopped carbon fiber, composite resistance wire or resistance sheet.

8. The device for detecting defects of a headlight cover according to claim 1, characterized in that: The temperature regulating mechanism comprises a temperature control unit, a temperature control circulation pump and a conduit, and the conduit is connected to the temperature control unit and the temperature control circulation pump.

9. The device for detecting defects of a headlight cover according to claim 8, characterized in that: The two ends of the conduit are placed in the liquid isolation mechanism to evenly control the temperature of the detection liquid.

10. The device for detecting defects of a headlight cover according to claim 1, characterized in that: The size adjustment component and the height adjustment component are both configured for telescopic adjustment or splicing adjustment.

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