A method and device for detecting gold spraying quality

Abstract

This application discloses a method and apparatus for inspecting the quality of gold spraying. The method includes: acquiring an image of the gold-sprayed end face of the core after gold spraying by a gold spraying machine, and performing noise reduction, enhancement, and segmentation to obtain multiple gold-sprayed area images; extracting multiple types of gold spraying features from the gold-sprayed area images; detecting these features to obtain detection results; generating a quality inspection report for the gold-sprayed area images; determining whether the gold spraying quality corresponding to the gold-sprayed area images is qualified through the quality inspection report; and statistically analyzing all quality inspection reports for each gold-sprayed area image to determine whether the gold spraying quality of the gold spraying machine is qualified. It is evident that by identifying gold spraying features and performing qualification inspection on the images after gold spraying by the gold spraying machine, the gold spraying quality of the gold spraying machine can be inspected. This allows for timely handling or removal of cores that are found to be unqualified, ensuring that the surface of the core after gold spraying is basically consistent, improving the utilization rate of the gold spraying material, and enhancing the quality and reliability of the capacitor.

Description

Technical Field

[0001] This application relates to the field of gold spraying technology, and more specifically, to a method and apparatus for gold spraying quality testing. Background Technology

[0002] With the continuous development of the power electronics industry, metallized film capacitors have been widely used both domestically and internationally. In China, metallized film capacitors have been developed for many years, and the quality of gold plating is a key factor affecting capacitor quality. Currently, the main gold plating process for metallized film capacitors both domestically and internationally is thermal spraying, including flame wire spraying and arc wire spraying. Flame wire spraying uses a mixture of oxygen and fuel gas to melt the wire coating material for spraying. Arc wire spraying uses low voltage and high current to melt wires, with two wires serving as positive and negative electrodes. After melting under the action of electrical energy, the melted wires are atomized into metal particles by compressed air for spraying. Both processes ultimately transform the gold-plated wires into metal particles that are sprayed onto the end face of the capacitor core.

[0003] However, it is currently difficult to guarantee the quality of gold spraying in these two processes, and the quality of gold spraying directly affects the utilization rate of gold spraying materials.

[0004] Therefore, how to inspect the gold spraying quality of the gold spraying machine to ensure that the surface of the core after gold spraying is basically consistent, improve the utilization rate of the gold spraying material, and enhance the quality and reliability of the capacitor are issues that need attention. Summary of the Invention

[0005] In view of the above problems, this application provides a method and apparatus for inspecting the quality of gold plating, so as to ensure that the surface of the core after gold plating is basically uniform, improve the utilization rate of gold plating material and the quality and reliability of capacitor.

[0006] To achieve the above objectives, the following specific solutions are proposed:

[0007] A method for inspecting the quality of gold spraying is applied to a data analysis processor of a gold spraying quality inspection system. The gold spraying quality inspection system further includes a data acquisition system and a step-type screening device. The data acquisition system includes a camera, which is disposed at both ends of the step-type screening device. The step-type screening device includes a conveyor belt, which is connected to the output end of the gold spraying machine.

[0008] The method includes:

[0009] Acquire an image of the gold-plated end face of the core after gold plating by the gold plating machine, captured by the camera;

[0010] The image of the gold-plated end face of the core is subjected to noise reduction, enhancement, and segmentation processing to obtain multiple gold-plated area images;

[0011] For each gold spraying area image, multiple types of gold spraying features are extracted from the gold spraying area image to detect the various types of gold spraying features and obtain detection results. Based on the various types of gold spraying features of the gold spraying area, a quality inspection report of the gold spraying area image is generated to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified.

[0012] All quality inspection reports for each gold spraying area image are analyzed. If the number of gold spraying area images with substandard gold spraying quality exceeds the preset proportion of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be substandard; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified.

[0013] Optionally, multiple types of gold spraying features are extracted from the gold spraying region image to detect various gold spraying features and obtain detection results, including:

[0014] The color distribution characteristics of the gold spraying area image are analyzed by a color analysis algorithm, and the uniformity of gold spraying by the gold spraying machine is detected based on the color distribution characteristics, so as to obtain the uniformity detection result of gold spraying by the gold spraying machine in the gold spraying area image.

[0015] The texture features of the gold spraying area image are extracted by a texture analysis algorithm, and the gold spraying surface of the gold spraying machine is detected based on the texture features to obtain the gold spraying surface flatness detection result of the gold spraying area image.

[0016] The gloss of the gold spraying area image is calculated by a gloss analysis algorithm, and the gloss of the gold spraying machine is tested for qualification based on the gloss and the gloss threshold of the preset gold spraying sample, so as to obtain the gold spraying gloss detection result of the gold spraying machine in the gold spraying area image.

[0017] Extract the roughness of the gold spraying area image, and detect whether the gold spraying particles of the gold spraying machine are qualified according to the roughness and the roughness standard of the preset gold spraying template, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image.

[0018] The presence of scratches or bubbles in the gold-sprayed area image is detected to obtain the gold-sprayed surface defect detection result of the gold-sprayed area image.

[0019] Optionally, the gold spraying quality inspection system further includes a host computer storage system, which is used to store the parameters of the preset gold spraying template and all quality inspection reports of the images of each gold spraying area.

[0020] Optionally, the method further includes:

[0021] After confirming that the gold spraying quality of the gold spraying machine is qualified, a process capability index curve is plotted based on all quality inspection reports of the images of each gold spraying area.

[0022] Based on the process capability index curve, a gold spraying parameter adjustment instruction is generated, and the gold spraying parameters of the gold spraying machine are adjusted based on the gold spraying parameter adjustment instruction.

[0023] Optionally, the step-type screening device may also include a robotic arm;

[0024] The method also includes:

[0025] The robotic arm is driven to remove the core corresponding to the area image where the gold plating quality is substandard.

[0026] Optionally, the step-type screening device further includes a positioning baffle, which is disposed on the conveyor belt;

[0027] The positioning baffle is used to block the core after the gold spraying machine has sprayed gold, so that the core after the gold spraying machine has sprayed gold is shaped into a group.

[0028] A gold spraying quality inspection device is used as a data analysis processor in a gold spraying quality inspection system. The gold spraying quality inspection system further includes a data acquisition system and a step-type screening device. The data acquisition system includes a camera, which is disposed at both ends of the step-type screening device. The step-type screening device includes a conveyor belt, which is connected to the output end of the gold spraying machine.

[0029] The gold plating quality inspection device includes:

[0030] The core gold spraying end face image acquisition unit is used to acquire the core gold spraying end face image after gold spraying by the gold spraying machine, captured by the camera.

[0031] The preprocessing unit is used to perform noise reduction, enhancement, and segmentation processing on the gold-plated end face image of the core to obtain multiple gold-plated area images;

[0032] The gold spraying quality inspection unit is used to extract multiple types of gold spraying features from each gold spraying area image, to detect the various types of gold spraying features to obtain the detection results, and to generate a quality inspection report of the gold spraying area image based on the various types of gold spraying features of the gold spraying area, so as to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified through the quality inspection report.

[0033] The gold spraying quality assessment unit is used to statistically analyze all quality inspection reports for each gold spraying area image. If the number of gold spraying area images with substandard gold spraying quality exceeds the preset proportion of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be substandard; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified.

[0034] Optionally, the gold plating quality inspection unit includes:

[0035] The gold spray uniformity detection unit is used to analyze the color distribution characteristics of the gold spray area image through a color analysis algorithm, and detect whether the gold spraying of the gold spraying machine is uniform according to the color distribution characteristics, so as to obtain the gold spray uniformity detection result of the gold spraying machine in the gold spray area image.

[0036] The gold spraying surface flatness detection unit is used to extract the texture features of the gold spraying area image through a texture analysis algorithm, and detect whether the gold spraying surface of the gold spraying machine is flat according to the texture features, so as to obtain the gold spraying surface flatness detection result of the gold spraying machine in the gold spraying area image.

[0037] The gold spraying gloss detection unit is used to calculate the gloss of the gold spraying area image through a gloss analysis algorithm, and to detect whether the gold spraying gloss of the gold spraying machine is qualified according to the gloss and the gloss threshold of the preset gold spraying sample, so as to obtain the gold spraying gloss detection result of the gold spraying machine of the gold spraying area image.

[0038] The gold spraying particle detection unit is used to extract the roughness of the gold spraying area image, and detect whether the gold spraying particles of the gold spraying machine are qualified according to the roughness and the roughness standard of the preset gold spraying template, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image.

[0039] The gold spraying surface defect detection unit is used to detect whether there are scratches or bubbles in the gold spraying area image, so as to obtain the gold spraying surface defect detection result of the gold spraying machine in the gold spraying area image.

[0040] Optionally, the gold spraying quality inspection system further includes a host computer storage system, which is used to store the parameters of the preset gold spraying template and all quality inspection reports of the images of each gold spraying area.

[0041] Optionally, the gold plating quality inspection device also includes:

[0042] The process capability index curve plotting unit is used to plot the process capability index curve based on all quality inspection reports of the images of each gold spraying area after determining that the gold spraying quality of the gold spraying machine is qualified.

[0043] The gold spraying parameter adjustment unit is used to generate a gold spraying parameter adjustment instruction based on the process capability index curve, and adjust the gold spraying parameters of the gold spraying machine based on the gold spraying parameter adjustment instruction.

[0044] Optionally, the step-type screening device may also include a robotic arm;

[0045] The gold plating quality inspection device also includes:

[0046] The defective core rejection unit is used to drive the robotic arm to reject the cores corresponding to the gold spraying area image that does not meet the gold spraying quality standard.

[0047] Optionally, the step-type screening device further includes a positioning baffle, which is disposed on the conveyor belt;

[0048] The positioning baffle is used to block the core after the gold spraying machine has sprayed gold, so that the core after the gold spraying machine has sprayed gold is shaped into a group.

[0049] Using the above technical solution, this application acquires an image of the gold-plated end face of the core after gold plating by a camera, performs noise reduction, enhancement, and segmentation processing on the gold-plated end face image to obtain multiple gold-plated region images. For each gold-plated region image, multiple types of gold-plating features are extracted to detect various gold-plating features and obtain detection results. Based on the various gold-plating features of the gold-plated region, a quality inspection report of the gold-plated region image is generated to determine whether the gold-plating quality of the corresponding gold-plated region image is qualified. All quality inspection reports of each gold-plated region image are counted. If the number of gold-plated region images with unqualified gold-plating quality exceeds a preset proportion of all gold-plated region images, the gold-plating quality of the gold-plating machine is determined to be unqualified; otherwise, the gold-plating quality of the gold-plating machine is determined to be qualified. Therefore, by identifying the gold spraying features of the image after gold spraying and conducting a qualification test, the gold spraying quality of the gold spraying machine can be inspected. This allows for timely response or removal of unqualified cores, thereby ensuring that the surface of the cores after gold spraying is basically consistent, improving the utilization rate of the gold spraying material, as well as the quality and reliability of the capacitor. Attached Figure Description

[0050] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0051] Figure 1 This application provides a system layout diagram for implementing gold spraying quality inspection in an embodiment of the present application.

[0052] Figure 2 This is a schematic diagram of a process for implementing gold spraying quality inspection according to an embodiment of this application;

[0053] Figure 3 A diagram illustrating the standard for the coarseness of gold-plating particles provided in an embodiment of this application;

[0054] Figure 4This is a schematic diagram of a device for detecting the quality of gold spraying, provided in an embodiment of this application. Detailed Implementation

[0055] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] Figure 1 This application provides a system layout diagram for implementing gold spraying quality inspection, as shown in the embodiment. Figure 1 As shown, the gold spraying quality inspection system may include a data analysis processor, a data acquisition system, a host computer storage system, and a step-by-step screening device.

[0057] The data acquisition system may include cameras, which can be positioned at both ends of the step-type screening device. Specifically, the cameras may be high-definition cameras, possessing dust and high-temperature resistance, and capable of long-term reliable operation in the gold spraying chamber environment. The high-definition cameras can acquire image information of the core after gold spraying.

[0058] A step-type screening device may include a conveyor belt, step-positioning baffles, a host computer, and a robotic arm. The input end of the conveyor belt connects to the output end of the gold spraying machine, and the conveyor belt neatly arranges the gold-sprayed cores, with the cylindrical surface of the cores parallel to the horizontal plane and the gold-sprayed end faces facing both sides, facilitating data acquisition. Step-positioning baffles can be installed on the conveyor belt to block the gold-sprayed cores, ensuring they are grouped together for stability and easy high-definition image capture by the camera. The host computer collects and processes the data. The robotic arm removes defective cores according to instructions from the host computer.

[0059] The host computer storage system can store the parameters of the preset gold spraying template, as well as the quality inspection data of the gold spraying image to be inspected.

[0060] The parameters of the preset gold spraying sample can include gold spraying uniformity parameters, gold spraying surface flatness parameters, gold spraying gloss parameters, gold spraying particle size parameters, and gold spraying surface defect parameters.

[0061] The data analysis processor can quickly analyze and compare the collected data on the gold-plated end face of the core, determine its consistency with the sample data, and then issue a pass / fail instruction to the stepper screening device. The screening time should not exceed the maximum speed of the stepper motor.

[0062] based on Figure 1 The system architecture shown is as follows: Figure 2 This paper illustrates a flowchart of a gold spraying quality inspection method provided in an embodiment of this application. (Refer to...) Figure 2 The process may include:

[0063] Step S110: Obtain an image of the gold-plated end face of the core after gold plating by the gold spraying machine, captured by a camera.

[0064] Step S120: Denoise, enhance and segment the image of the gold-plated end face of the core to obtain multiple gold-plated area images.

[0065] Specifically, image preprocessing techniques, such as denoising, enhancement, and segmentation (dividing the overall image into n*m partitions for subsequent processing), can be used to improve image quality and extract feature information of the gold-sprayed areas, laying the foundation for subsequent analysis.

[0066] Understandably, dividing the image of the gold-plated end face of the core into multiple gold-plated area images facilitates quality inspection of each gold-plated area image, thereby making the gold-plating quality inspection of the gold-plating machine more accurate.

[0067] Step S130: For each gold spraying area image, extract multiple types of gold spraying features from the gold spraying area image, detect the various types of gold spraying features to obtain detection results, and generate a quality inspection report of the gold spraying area image based on the various types of gold spraying features of the gold spraying area, so as to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified through the quality inspection report.

[0068] Specifically, the process of extracting multiple types of gold spraying features from the gold spraying region image and detecting these features to obtain detection results can include the following scenarios:

[0069] The first method involves analyzing the color distribution characteristics of the gold spraying area image using a color analysis algorithm, and then detecting whether the gold spraying is uniform based on these color distribution characteristics, in order to obtain the gold spraying uniformity detection result of the gold spraying area image.

[0070] Specifically, based on the feature information of the gold-sprayed area and the sample data, the color of the gold-sprayed area can be analyzed using a color analysis algorithm to obtain the color distribution characteristics of the gold-sprayed area, and the uniformity of the gold spraying can be determined based on the color distribution characteristics.

[0071] The second method involves extracting the texture features of the gold spraying area image using a texture analysis algorithm, and then detecting whether the gold spraying surface of the gold spraying machine is flat based on the texture features, in order to obtain the flatness detection result of the gold spraying surface of the gold spraying machine in the gold spraying area image.

[0072] Specifically, a texture analysis algorithm is used to extract the texture features of the gold-plated area. Based on the texture features and sample data, it is determined whether the gold-plated surface is flat. If it is not flat, it is determined that the gold-plated surface is uneven.

[0073] The third method involves calculating the gloss of the gold-sprayed area image using a gloss analysis algorithm, and then, based on the gloss and the preset gloss threshold of the gold-sprayed sample, detecting whether the gold-sprayed gloss of the gold-spraying machine is qualified, in order to obtain the gold-sprayed gloss detection result of the gold-sprayed area image.

[0074] Specifically, the gloss of the gold-sprayed area is calculated using a gloss analysis algorithm. The quality of the gold spraying is judged based on the gloss level and the sample data. If the gloss level is lower than the preset gloss level threshold, the gold spraying gloss level is deemed unqualified.

[0075] The fourth step is to extract the roughness of the gold spraying area image, and based on the roughness and the roughness standard of the preset gold spraying template, to detect whether the gold spraying particles of the gold spraying machine are qualified, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image.

[0076] Specifically, the roughness of the gold-sprayed area can be extracted, and the size of the gold-sprayed particles can be calculated based on the roughness and sample data. If the roughness does not meet the standard qualified sample data, the size of the gold-sprayed particles is unqualified.

[0077] Understandably, the particle size of the gold plating affects its quality. If the particles are too large, the gold plating material cannot reach the gaps between the thin film layers, resulting in poor contact with the coating. If the particles are too small, the gold plating particles will enter the edges, causing short circuits. Particle size and standards can be found by referring to [reference needed]. Figure 3 As shown.

[0078] The fifth method involves detecting whether there are scratches or bubbles in the image of the gold-sprayed area to obtain the surface defect detection results of the gold-sprayed area image.

[0079] Specifically, defects such as scratches and bubbles on the gold-plated surface can be detected using defect detection algorithms. If a defect is detected, it is determined to be a defect on the gold-plated surface.

[0080] Step S140: Statistically analyze all quality inspection reports for each gold spraying area image. If the number of gold spraying area images with unqualified gold spraying quality exceeds the preset ratio of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be unqualified; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified.

[0081] After obtaining all quality inspection reports for each gold-sprayed area image, the host computer storage system can store all quality inspection reports for each gold-sprayed area image.

[0082] Specifically, the preset ratio can be customized, such as 20%. If the unqualified area exceeds 20%, it is considered different from the standard version, and the gold plating is considered unqualified. If the unqualified area is less than 20%, it is considered the same as the standard version, and the gold plating is qualified.

[0083] Furthermore, when an image of a region with substandard gold plating quality is identified, a robotic arm can be driven to remove the core corresponding to that region, thereby promptly eliminating the substandard core.

[0084] Furthermore, once the gold spraying quality of the gold spraying machine is confirmed to be up to standard, an optimization process can be implemented to obtain a gold spraying machine with an even higher gold spraying quality pass rate. The optimization process may include:

[0085] S1. Based on all quality inspection reports of each gold spraying area image, plot the process capability index curve.

[0086] Specifically, after plotting the process capability index curve, the curve can be fed back to the production department to provide detailed quality data for process optimization and improvement.

[0087] S2. Generate a gold spraying parameter adjustment instruction based on the process capability index curve, and adjust the gold spraying parameters of the gold spraying machine based on the gold spraying parameter adjustment instruction.

[0088] The gold spraying quality inspection method provided in this embodiment acquires an image of the gold-sprayed end face of the core after gold spraying by a camera. The image is then denoised, enhanced, and segmented to obtain multiple gold-sprayed region images. For each gold-sprayed region image, multiple types of gold spraying features are extracted. These features are then detected to obtain inspection results. Based on these features, a quality inspection report for the gold-sprayed region image is generated. This report determines whether the gold spraying quality of the corresponding region image is acceptable. All quality inspection reports for each gold-sprayed region image are statistically analyzed. If the number of gold-sprayed region images with unacceptable quality exceeds a preset proportion of all gold-sprayed region images, the gold spraying quality of the gold spraying machine is deemed unacceptable; otherwise, the gold spraying quality is deemed acceptable. Therefore, by identifying the gold spraying features of the image after gold spraying and conducting a qualification test, the gold spraying quality of the gold spraying machine can be inspected. This allows for timely response or removal of unqualified cores, thereby ensuring that the surface of the cores after gold spraying is basically consistent, improving the utilization rate of the gold spraying material, as well as the quality and reliability of the capacitor.

[0089] The apparatus for gold sputtering quality detection provided in the embodiments of this application will be described below. The apparatus for gold sputtering quality detection described below and the method for gold sputtering quality detection described above can be referred to in correspondence with each other.

[0090] See Figure 4 , Figure 4 This is a schematic diagram of a device for detecting the quality of gold spraying, as disclosed in an embodiment of this application.

[0091] like Figure 4 As shown, the device may include:

[0092] A gold spraying quality inspection device is used as a data analysis processor in a gold spraying quality inspection system. The gold spraying quality inspection system further includes a data acquisition system and a step-type screening device. The data acquisition system includes a camera, which is disposed at both ends of the step-type screening device. The step-type screening device includes a conveyor belt, which is connected to the output end of the gold spraying machine.

[0093] The gold plating quality inspection device includes:

[0094] The core gold spraying end face image acquisition unit 11 is used to acquire the core gold spraying end face image after the gold spraying machine is sprayed by the camera.

[0095] Preprocessing unit 12 is used to perform noise reduction, enhancement and segmentation processing on the gold-plated end face image of the core to obtain multiple gold-plated area images;

[0096] The gold spraying quality inspection unit 13 is used to extract multiple types of gold spraying features from each gold spraying area image, to detect the various types of gold spraying features to obtain the detection results, and to generate a quality inspection report of the gold spraying area image based on the various types of gold spraying features of the gold spraying area, so as to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified through the quality inspection report.

[0097] The gold spraying quality assessment unit 14 is used to count all quality inspection reports of each gold spraying area image. If the number of gold spraying area images with unqualified gold spraying quality exceeds the preset ratio of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be unqualified; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified.

[0098] Optionally, the gold plating quality inspection unit includes:

[0099] The gold spray uniformity detection unit is used to analyze the color distribution characteristics of the gold spray area image through a color analysis algorithm, and detect whether the gold spraying of the gold spraying machine is uniform according to the color distribution characteristics, so as to obtain the gold spray uniformity detection result of the gold spraying machine in the gold spray area image.

[0100] The gold spraying surface flatness detection unit is used to extract the texture features of the gold spraying area image through a texture analysis algorithm, and detect whether the gold spraying surface of the gold spraying machine is flat according to the texture features, so as to obtain the gold spraying surface flatness detection result of the gold spraying machine in the gold spraying area image.

[0101] The gold spraying gloss detection unit is used to calculate the gloss of the gold spraying area image through a gloss analysis algorithm, and to detect whether the gold spraying gloss of the gold spraying machine is qualified according to the gloss and the gloss threshold of the preset gold spraying sample, so as to obtain the gold spraying gloss detection result of the gold spraying machine of the gold spraying area image.

[0102] The gold spraying particle detection unit is used to extract the roughness of the gold spraying area image, and detect whether the gold spraying particles of the gold spraying machine are qualified according to the roughness and the roughness standard of the preset gold spraying template, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image.

[0103] The gold spraying surface defect detection unit is used to detect whether there are scratches or bubbles in the gold spraying area image, so as to obtain the gold spraying surface defect detection result of the gold spraying machine in the gold spraying area image.

[0104] Optionally, the gold spraying quality inspection system further includes a host computer storage system, which is used to store the parameters of the preset gold spraying template and all quality inspection reports of the images of each gold spraying area.

[0105] Optionally, the gold plating quality inspection device also includes:

[0106] The process capability index curve plotting unit is used to plot the process capability index curve based on all quality inspection reports of the images of each gold spraying area after determining that the gold spraying quality of the gold spraying machine is qualified.

[0107] The gold spraying parameter adjustment unit is used to generate a gold spraying parameter adjustment instruction based on the process capability index curve, and adjust the gold spraying parameters of the gold spraying machine based on the gold spraying parameter adjustment instruction.

[0108] Optionally, the step-type screening device may also include a robotic arm;

[0109] The gold plating quality inspection device also includes:

[0110] The defective core rejection unit is used to drive the robotic arm to reject the cores corresponding to the gold spraying area image that does not meet the gold spraying quality standard.

[0111] Optionally, the step-type screening device further includes a positioning baffle, which is disposed on the conveyor belt;

[0112] The positioning baffle is used to block the core after the gold spraying machine has sprayed gold, so that the core after the gold spraying machine has sprayed gold is shaped into a group.

[0113] Finally, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0114] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0115] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for inspecting the quality of gold plating, characterized in that, A data analysis processor is applied to a gold spraying quality inspection system. The gold spraying quality inspection system also includes a data acquisition system and a step-type screening device. The data acquisition system includes a camera, which is set at both ends of the step-type screening device. The step-type screening device includes a conveyor belt, which is connected to the output end of the gold spraying machine. The method includes: Acquire an image of the gold-plated end face of the core after gold plating by the gold plating machine, captured by the camera; The image of the gold-plated end face of the core is subjected to noise reduction, enhancement, and segmentation processing to obtain multiple gold-plated area images; For each gold spraying area image, multiple types of gold spraying features are extracted from the gold spraying area image to detect the various types of gold spraying features and obtain detection results. Based on the various types of gold spraying features of the gold spraying area, a quality inspection report of the gold spraying area image is generated to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified. If the number of unqualified gold spraying area images exceeds the preset proportion of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be unqualified; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified. The method also includes: After confirming that the gold spraying quality of the gold spraying machine is qualified, a process capability index curve is plotted based on all quality inspection reports of the images of each gold spraying area. Based on the process capability index curve, a gold spraying parameter adjustment instruction is generated, and the gold spraying parameters of the gold spraying machine are adjusted based on the gold spraying parameter adjustment instruction.

2. The method according to claim 1, characterized in that, Extracting multiple types of gold spraying features from the gold spraying region image, and detecting each type of gold spraying feature to obtain detection results, including: The color distribution characteristics of the gold spraying area image are analyzed by a color analysis algorithm, and the uniformity of gold spraying by the gold spraying machine is detected based on the color distribution characteristics, so as to obtain the uniformity detection result of gold spraying by the gold spraying machine in the gold spraying area image. The texture features of the gold spraying area image are extracted by a texture analysis algorithm, and the gold spraying surface of the gold spraying machine is detected based on the texture features to obtain the gold spraying surface flatness detection result of the gold spraying area image. The gloss of the gold spraying area image is calculated by a gloss analysis algorithm, and the gloss of the gold spraying machine is tested for qualification based on the gloss and the gloss threshold of the preset gold spraying sample, so as to obtain the gold spraying gloss detection result of the gold spraying machine in the gold spraying area image. Extract the roughness of the gold spraying area image, and detect whether the gold spraying particles of the gold spraying machine are qualified according to the roughness and the roughness standard of the preset gold spraying template, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image. The presence of scratches or bubbles in the gold-sprayed area image is detected to obtain the gold-sprayed surface defect detection result of the gold-sprayed area image.

3. The method according to claim 2, characterized in that, The gold spraying quality inspection system also includes a host computer storage system, which is used to store the parameters of the preset gold spraying sample and all quality inspection reports of the images of each gold spraying area.

4. The method according to claim 1, characterized in that, The step-by-step screening device also includes a robotic arm; The method also includes: The robotic arm is driven to remove the core corresponding to the area image where the gold plating quality is substandard.

5. The method according to any one of claims 1-4, characterized in that, The step-by-step screening device also includes a positioning baffle, which is disposed on the conveyor belt; The positioning baffle is used to block the core after the gold spraying machine has sprayed gold, so that the core after the gold spraying machine has sprayed gold is shaped into a group.

6. A gold spraying quality inspection device, characterized in that, A data analysis processor is applied to a gold spraying quality inspection system. The gold spraying quality inspection system also includes a data acquisition system and a step-type screening device. The data acquisition system includes a camera, which is set at both ends of the step-type screening device. The step-type screening device includes a conveyor belt, which is connected to the output end of the gold spraying machine. The gold plating quality inspection device includes: The core gold spraying end face image acquisition unit is used to acquire the core gold spraying end face image after gold spraying by the gold spraying machine, captured by the camera. The preprocessing unit is used to perform noise reduction, enhancement, and segmentation processing on the gold-plated end face image of the core to obtain multiple gold-plated area images; The gold spraying quality inspection unit is used to extract multiple types of gold spraying features from each gold spraying area image, to detect the various types of gold spraying features to obtain the detection results, and to generate a quality inspection report of the gold spraying area image based on the various types of gold spraying features of the gold spraying area, so as to determine whether the gold spraying quality corresponding to the gold spraying area image is qualified through the quality inspection report. The gold spraying quality assessment unit is used to statistically analyze all quality inspection reports of each gold spraying area image. If the number of gold spraying area images with unqualified gold spraying quality exceeds the preset proportion of all gold spraying area images, then the gold spraying quality of the gold spraying machine is determined to be unqualified; otherwise, the gold spraying quality of the gold spraying machine is determined to be qualified. The device also includes: The process capability index curve plotting unit is used to plot the process capability index curve based on all quality inspection reports of the images of each gold spraying area after determining that the gold spraying quality of the gold spraying machine is qualified. The gold spraying parameter adjustment unit is used to generate a gold spraying parameter adjustment instruction based on the process capability index curve, and adjust the gold spraying parameters of the gold spraying machine based on the gold spraying parameter adjustment instruction.

7. The gold spraying quality inspection device according to claim 6, characterized in that, The gold plating quality inspection unit includes: The gold spray uniformity detection unit is used to analyze the color distribution characteristics of the gold spray area image through a color analysis algorithm, and detect whether the gold spraying of the gold spraying machine is uniform according to the color distribution characteristics, so as to obtain the gold spray uniformity detection result of the gold spraying machine in the gold spray area image. The gold spraying surface flatness detection unit is used to extract the texture features of the gold spraying area image through a texture analysis algorithm, and detect whether the gold spraying surface of the gold spraying machine is flat according to the texture features, so as to obtain the gold spraying surface flatness detection result of the gold spraying machine in the gold spraying area image. The gold spraying gloss detection unit is used to calculate the gloss of the gold spraying area image through a gloss analysis algorithm, and to detect whether the gold spraying gloss of the gold spraying machine is qualified according to the gloss and the gloss threshold of the preset gold spraying sample, so as to obtain the gold spraying gloss detection result of the gold spraying machine of the gold spraying area image. The gold spraying particle detection unit is used to extract the roughness of the gold spraying area image, and detect whether the gold spraying particles of the gold spraying machine are qualified according to the roughness and the roughness standard of the preset gold spraying template, so as to obtain the gold spraying particle detection result of the gold spraying machine in the gold spraying area image. The gold spraying surface defect detection unit is used to detect whether there are scratches or bubbles in the gold spraying area image, so as to obtain the gold spraying surface defect detection result of the gold spraying machine in the gold spraying area image.

8. The gold spraying quality inspection device according to claim 7, characterized in that, The gold spraying quality inspection system also includes a host computer storage system, which is used to store the parameters of the preset gold spraying sample and all quality inspection reports of the images of each gold spraying area.

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