Photovoltaic frame corner code detection fixture

Abstract

The utility model discloses a photovoltaic frame angle code detection gauge, including detection component, detection component is L shape integral type structure, and the outside of detection component is formed by support surface one and support surface two, and the angle of support surface one and support surface two is ninety degrees, and the inside of detection component is formed by detection surface one and detection surface two, and the angle of detection surface one and detection surface two is ninety degrees, and the junction of detection surface one and detection surface two is equipped with edge corner surface, and the edge corner surface is forty -five degree chamfer, and the distance shape of edge corner surface and angle code installation position and short frame is matched, and still be equipped with the limit component of limit component on detection component, and the width of support surface one and detection surface one is consistent with the width of angle code, and the width of support surface two and detection surface two is consistent with the width of short frame, and detection component includes the limit board one and limit board two of fixed connection on the upper and lower ends of support surface one and detection surface one. The utility model has the advantages of lower cost, and the photovoltaic frame angle can be detected fast and accurately.

Description

Technical Field

[0001] This utility model relates to the field of inspection and testing tools, specifically a photovoltaic frame corner code inspection tool. Background Technology

[0002] With the rapid development of the photovoltaic industry, the market has placed increasingly higher demands on the performance of photovoltaic modules. Modules with high reliability, high versatility, and high power generation have always been the core focus of market competition. As market demand continues to change, the production pace of photovoltaic modules is constantly increasing, and the industry is becoming increasingly competitive.

[0003] As a key structural component of photovoltaic modules, the quality of the raw materials used in the frame directly affects the overall performance and reliability of the module. In actual production, defective frame raw materials are a frequent source of incoming material abnormalities, with the installation angle and quality issues of corner brackets being particularly prominent. Due to the irregular shape of corner brackets, the industry currently lacks a dedicated and effective set of testing tools. Traditional testing relies heavily on conventional inspection tools such as angle gauges and vernier calipers, but these tools are insufficient for accurately detecting the installation angle and position of corner brackets, making it difficult to detect incoming material abnormalities in a timely manner. When corner brackets with quality problems are shipped along with the frame, they can easily trigger batch-wide module quality defects, such as excessively large corner gaps and uneven splicing angles, increasing the probability of product quality complaints and causing dual damage to the company's brand image and economic benefits. Utility Model Content

[0004] The purpose of this invention is to provide a photovoltaic frame corner code detection tool, which has the advantages of low cost and can quickly and accurately detect the corners of photovoltaic frames, solving the problem that ordinary tools in the prior art cannot quickly detect the corners of photovoltaic frames.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A photovoltaic frame corner code inspection fixture includes an inspection component. The inspection component has an L-shaped integrated structure. The outer side of the inspection component consists of a support surface one and a support surface two, with an angle of 90 degrees between the support surface one and the support surface two. The inner side of the inspection component consists of an inspection surface one and an inspection surface two, with an angle of 90 degrees between the inspection surface one and the inspection surface two. A corner surface is provided at the connection between the inspection surface one and the inspection surface two. The corner surface has a 45-degree chamfer. The corner surface fits and matches the shape of the corner code installation position and the distance of the short frame. A limit component is also installed on the inspection component.

[0007] Preferably, the width of the first support surface and the first detection surface are the same as the width of the corner code.

[0008] It is worth noting that by making the width of the support surface one and the detection surface one the same as the width of the corner code, the height of the detection surface one can be made to be flush with the height of the corner code to be detected, so that the skewness of the corner code can be compared.

[0009] Preferably, the widths of the second support surface and the second detection surface are the same as the width of the short frame.

[0010] It is worth noting that by making the width of the second support surface and the second detection surface the same as the width of the short frame, the height of the second detection surface can be made to be flush with the height of the short frame to be detected. This can be used as a whole as a width base and as a coordinate axis for right-angle detection.

[0011] Preferably, the detection component includes a limiting plate 1 and a limiting plate 2 fixedly connected to the upper and lower ends of the support surface 1 and the detection surface 1.

[0012] Preferably, the first limiting plate and the second limiting plate are horizontal and perpendicular to the first supporting surface and the first detection surface.

[0013] It is worth noting that the first and second limiting plates can support the detection corners, thereby fitting the upper and lower ends of the detection corners and ensuring the stability of the detection components during detection.

[0014] Preferably, clamping plate one and clamping plate two are fixedly connected to the upper and lower ends of the support surface two and the detection surface two.

[0015] Preferably, the clamping plate one and the clamping plate two are horizontal and perpendicular to the supporting surface two and the detection surface two.

[0016] It is worth noting that the upper and lower ends of the detection frame can be clamped by clamping plate one and clamping plate two, so that detection surface two can be used as the detection reference surface to ensure the accuracy of detection.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention uses two detection surfaces, one at a 90-degree angle and the other at a 45-degree chamfer, to fit against the two ends of the frame corner, and the other side of the frame corner to fit against the edge corner. This allows the inner side of the detection component to fit against the standard frame corner code, enabling the detection of the perpendicularity of the frame corner. It also allows for the direct detection of the degree of skewness of the corner code based on its position. A feeler gauge can also be used to assist in detecting the skew data. Compared with conventional inspection tools, this invention offers higher detection efficiency and more accurate data. Attached Figure Description

[0019] Figure 1 This is an isometric view of the overall structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the detection component of this utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the detection component of this utility model;

[0023] Figure 5 This is a three-dimensional structural disassembly diagram of the limiting component of this utility model.

[0024] Reference numerals: 1. Detection component; 101. Support surface one; 102. Support surface two; 103. Detection surface one; 104. Detection surface two; 105. Corner surface; 2. Limiting component; 201. Limiting plate one; 202. Limiting plate two; 203. Clamping plate one; 204. Clamping plate two. Detailed Implementation

[0025] Among the feasible methods discovered in this field, photovoltaic modules, as the core carriers for clean energy utilization, have structural stability that directly affects power generation efficiency and service life. The frame, as the "skeleton" of the photovoltaic module, plays a crucial role in fixing the solar cells, resisting external environmental corrosion, and ensuring the mechanical strength of the module. Corner brackets, on the other hand, are key connectors in the frame assembly, and their installation accuracy and quality have a decisive impact on the overall performance of the frame. In the photovoltaic module production chain, incoming frame inspection is the first line of defense for quality control. Issues such as angular deviations and positional offsets of the corner brackets, if not identified in time, will directly lead to defects such as excessive gaps and structural loosening in subsequent module assembly. This not only increases rework costs but may also cause serious malfunctions such as microcracks and water ingress during long-term use.

[0026] Among the existing feasible technologies, the inspection of photovoltaic frames has long relied on general-purpose measuring tools, forming a testing mode based on conventional measuring instruments. In the corner code inspection stage, operators typically first visually inspect the corner code for obvious defects such as deformation or damage, then use an angle gauge to align with the splicing surface of the corner code and read the angle value to determine if it meets the 90-degree right angle requirement. For the deviation in the installation position between the corner code and the frame, vernier calipers are used to measure the distance between the edge of the corner code and the side of the frame, and the deviation value is calculated through multiple measurements. This traditional inspection method relies on the accumulated experience of operators and has played a certain role in small-batch, low-cycle production scenarios, but with the large-scale development of the photovoltaic industry, its limitations have become increasingly apparent.

[0027] Among the feasible methods discovered in this field, some companies have attempted to use the "template comparison method" for corner code inspection to address the shortcomings of traditional inspection tools. This involves creating a simple template based on the size and shape of the standard corner code. During inspection, the template is fitted against the corner code to be inspected, and the size of the gap between them is observed to determine whether the corner code is qualified. These templates are typically made of cut metal sheets, possessing a certain degree of wear resistance and stability, and are more intuitive than simply using measuring tools for inspecting the corner code's outline. However, due to the complex assembly relationship between the corner code and the frame, it is difficult to fully reflect key parameters such as the corner code's installation angle and perpendicularity simply by comparing the outline. Furthermore, the templates have poor versatility; when the corner code model changes, a new template must be made, increasing inspection costs and time.

[0028] Among the currently available feasible technologies, with the development of industrial inspection technology, some enterprises have introduced optical inspection equipment for the inspection of photovoltaic frame corner codes. This type of equipment uses a high-definition camera to capture images of the corner codes, then uses image recognition algorithms to analyze the images, calculate parameters such as the angle and position of the corner codes, and compare them with standard parameters, thereby achieving automated inspection. The advantages of optical inspection equipment are its fast inspection speed and accurate data recording, which can meet the needs of high-speed production and reduce errors caused by human operation. However, such equipment is relatively expensive, has strict requirements on the lighting conditions of the inspection environment and the accuracy of equipment calibration, making it difficult to popularize in some small and medium-sized production enterprises. Furthermore, when there are stains or scratches on the frame surface, image recognition is prone to misjudgment, affecting the reliability of the inspection.

[0029] Among the feasible methods discovered in this field, the industry has developed a testing approach based on "reference surface calibration" for the core testing indicator of corner bracket installation angle. This involves first determining one side of the frame as a reference surface, fixing a measuring tool to the reference surface, and then measuring the angle between the corner bracket and the reference surface to determine if the corner bracket is installed vertically. For example, one right-angled edge of a right-angle ruler is placed against the frame reference surface, and the other right-angled edge is placed against the corner bracket surface. If they are perfectly aligned, the angle is considered acceptable; if there is a gap, the gap width is measured using a feeler gauge to quantify the deviation. This method improves the accuracy of angle testing to some extent, but in practice, the selection of the reference surface and the degree of fit of the measuring tool both depend on the operator's operating procedures, making it prone to inconsistencies in test results due to human factors.

[0030] Among the currently available feasible technologies, to balance testing efficiency and cost, some companies have explored the "combined measuring tool testing method," which combines multiple conventional measuring tools to cover various testing parameters of corner brackets. For example, a right-angle ruler is used to check the perpendicularity of the corner bracket, a height gauge to check its installation height, and calipers to check the gap between the corner bracket and the frame. This multi-dimensional measurement allows for a comprehensive assessment of the ELH code's quality. The combined measuring tool testing method requires no additional investment in specialized equipment, utilizing existing company tool resources and is suitable for testing multiple corner bracket models. However, this method requires operators to be proficient in using multiple measuring tools, making the testing process relatively cumbersome. Furthermore, the measurement results of multiple parameters require manual summarization and analysis, making it difficult to achieve rapid data traceability and statistical analysis, and hindering timely early warning of quality problems.

[0031] Among the feasible methods discovered in this field, considering that the inspection of photovoltaic frame corner brackets involves not only the quality of the corner brackets themselves but also the overall assembly effect of the frame, some companies integrate corner bracket inspection into frame splicing testing. That is, the corner bracket to be inspected is pre-assembled with the frame to form a complete frame corner structure, and then the quality of the corner bracket is indirectly judged by inspecting parameters such as the diagonal length and splicing gap of the frame after splicing. This method can more realistically reflect the performance of the corner brackets in actual assembly, avoiding overlooking assembly-related issues by inspecting only the corner brackets. However, the pre-assembly process increases the workload of the inspection process, prolongs the inspection time, and for unqualified corner brackets, disassembly after pre-assembly will cause secondary damage to the frame, affecting the frame's reusability and increasing material waste costs.

[0032] Among the currently available feasible technologies, as the reliability requirements of photovoltaic modules increase, the industry's testing standards for frame corner brackets are becoming increasingly refined, driving the optimization of testing methods. For example, for the welding or riveting of corner brackets to the frame, in addition to testing angle and position parameters, it is also necessary to test the connection strength. Some companies use tensile testers to perform tensile tests on the corner brackets, judging the connection quality by measuring the tensile force when the corner bracket falls off. At the same time, to adapt to the usage requirements in different environments, some testing methods also simulate environmental conditions such as high temperature, low temperature, and humidity to test the dimensional stability and connection reliability of the corner brackets under extreme environments. These testing methods can more comprehensively evaluate the quality of corner brackets, but the testing process is complex and time-consuming, and is usually suitable for incoming material sampling or type testing, making it difficult to meet the full inspection requirements of mass production.

[0033] Among the feasible methods discovered in this field, the industry has gradually formed a testing system based on "critical control points" for the standardization of corner code inspection. This involves analyzing the impact of corner code quality on component performance to determine key inspection items such as corner code angle, installation position deviation, and dimensions, and then establishing clear acceptable ranges and testing methods for each item. For example, controlling the perpendicularity deviation between the corner code and the frame within a certain range, and limiting the lateral offset of the corner code installation position to specific values, ensures the consistency and comparability of test results. While this system helps standardize inspection operations and reduce the subjectivity of human judgment, in practice, due to the lack of dedicated testing tools, the inspection of key items still relies on the combined use of multiple measuring tools, making it difficult to achieve efficient and accurate batch inspection.

[0034] Among the currently available feasible technologies, lightweight and convenient testing technologies have become important development directions in response to the photovoltaic industry's demand for "cost reduction and efficiency improvement." Some companies are attempting to develop portable testing tools, such as foldable right-angle measuring rulers and graduated positioning gauges. These tools are small and lightweight, making them easy for operators to carry and use on-site, and can meet the needs of production line-side testing. The advantages of portable tools are their ease of operation and low cost, enabling rapid preliminary screening of key parameters and reducing the probability of unqualified materials entering the production line. However, due to limitations in structural design, their testing accuracy and functional completeness still need improvement, making it difficult to replace professional testing equipment for comprehensive quality assessment.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] To address the challenge of rapidly detecting photovoltaic frame corners using ordinary tools in existing technologies, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-5 ;

[0037] A photovoltaic frame corner code inspection fixture includes an inspection component 1, which has an L-shaped integrated structure. The outer side of the inspection component 1 is composed of a first support surface 101 and a second support surface 102, with an angle of 90 degrees between the first support surface 101 and the second support surface 102. The inner side of the inspection component 1 is composed of a first inspection surface 103 and a second inspection surface 104, with an angle of 90 degrees between the first inspection surface 103 and the second inspection surface 104. A corner surface 105 is provided at the connection between the first inspection surface 103 and the second inspection surface 104. The corner surface 105 has a 45-degree chamfer and the shape of the corner surface 105 fits and matches the installation position of the corner code and the distance of the short frame. A limit component 2 is also installed on the inspection component 1.

[0038] The detection surface 103 and detection surface 104, which are at a 90-degree angle, can be fitted to both ends of the frame corner, and the corner surface 105, which has a 45-degree chamfer, can be fitted to the edge corner of the frame. This allows the inner side of the detection component 1 to fit with the standard frame corner code, enabling the detection of the perpendicularity of the frame corner. It also allows for the direct detection of the degree of skewness of the corner code based on its position. A feeler gauge can also be used to assist in detecting the skew data. Compared with the use of conventional inspection tools, the detection efficiency and data accuracy are more accurate.

[0039] Please see Figure 3 and Figure 4 The widths of support surface 101 and detection surface 103 are the same as the width of the corner code. By ensuring that the widths of support surface 101 and detection surface 103 match the width of the corner code, the height of detection surface 103 can be aligned with the height of the corner code to be inspected, allowing for comparison of the left and right tilt of the corner code. The widths of support surface 2 102 and detection surface 2 104 are the same as the width of the short frame. By ensuring that the widths of support surface 2 102 and detection surface 2 104 match the width of the short frame, the height of detection surface 2 104 can be aligned with the height of the short frame to be inspected. This can be used as a base for width measurement, serving as the coordinate axis for right-angle detection.

[0040] Please see Figure 5 The detection component 1 includes a first limiting plate 201 and a second limiting plate 202 fixedly connected to the upper and lower ends of the first supporting surface 101 and the first detection surface 103. The first limiting plate 201 and the second limiting plate 202 are horizontal and perpendicular to the first supporting surface 101 and the first detection surface 103. The first limiting plate 201 and the second limiting plate 202 can support the detection corner, thereby fitting the upper and lower ends of the detection corner and ensuring the stability of the detection component 1 during detection. The second supporting surface 102 and the second detection surface 104 are fixedly connected to the upper and lower ends of the second clamping surface 203 and the second clamping plate 204. The first clamping plate 203 and the second clamping plate 204 are horizontal and perpendicular to the second supporting surface 102 and the second detection surface 104. The first clamping plate 203 and the second clamping plate 204 can clamp the upper and lower ends of the detection frame, allowing the second detection surface 104 to serve as a detection reference surface and ensuring the accuracy of the detection.

[0041] Working principle: The detection component 1 adopts an L-shaped design, corresponding to a standard 90-degree angle; the angle between detection surface 103 and detection surface 204 effectively relies on the corner code position to intuitively detect the degree of corner code skewness. A feeler gauge can also be used to assist in detecting skewness data. The width of the corner code position of detection surface 103 and detection surface 204 is consistent with the upper limit of the corner code design width, and the left and right positions match the corner code. The left and right skewness of the corner code installation can be intuitively viewed, which is more intuitive and efficient than the previous detection results.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A photovoltaic frame corner code inspection fixture, comprising an inspection component (1), characterized in that, The detection component (1) has an L-shaped integrated structure. The outer side of the detection component (1) is composed of support surface one (101) and support surface two (102), and the angle between support surface one (101) and support surface two (102) is 90 degrees. The inner side of the detection component (1) is composed of detection surface one (103) and detection surface two (104), and the angle between detection surface one (103) and detection surface two (104) is 90 degrees. A corner surface (105) is provided at the connection between detection surface one (103) and detection surface two (104). The corner surface (105) is a 45-degree chamfer. The corner surface (105) fits and matches the distance and shape of the corner code installation position and the short frame. A limit component (2) is also installed on the detection component (1).

2. The photovoltaic frame corner code detection fixture according to claim 1, characterized in that, The widths of the support surface (101) and the detection surface (103) are the same as the width of the corner code.

3. The photovoltaic frame corner code detection fixture according to claim 1, characterized in that, The widths of the second support surface (102) and the second detection surface (104) are the same as the width of the short frame.

4. A photovoltaic frame corner code detection fixture according to claim 2, characterized in that, The detection component (1) includes a limiting plate 1 (201) and a limiting plate 2 (202) fixed to the upper and lower ends of the support surface 1 (101) and the detection surface 1 (103).

5. A photovoltaic frame corner code detection fixture according to claim 4, characterized in that, The first limiting plate (201) and the second limiting plate (202) are horizontal and perpendicular to the first supporting surface (101) and the first detection surface (103).

6. A photovoltaic frame corner code detection fixture according to claim 3, characterized in that, The upper and lower ends of the support surface 2 (102) and the detection surface 2 (104) are fixedly connected with clamping plate 1 (203) and clamping plate 2 (204).

7. A photovoltaic frame corner code detection fixture according to claim 6, characterized in that, The clamping plate one (203) and clamping plate two (204) are horizontal and perpendicular to the support surface two (102) and the detection surface two (104).

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