Device and method for automatically photographing cross-sectional images of MLCC products

Abstract

The present invention discloses a device for automatically photographing cross-sectional images of MLCC products, including a controller and a camera, a metallographic microscope, a loading platform, and a first light source electrically connected to the control device, respectively. The camera can be rotatably mounted on the upper end of the metallographic microscope, the first light source is arranged at the lower end of the metallographic microscope, the loading platform is arranged below the metallographic microscope and can move in the horizontal and vertical directions, the control device is used to control the movement of the loading platform so that the sample on it is located at the focal position of the metallographic microscope, and is used to control the metallographic microscope to automatically adjust the magnification and control the first light source to adjust its brightness, cold and warm, and bright and dark fields, and is also used to control the camera to photograph the sample. The present invention can realize fully automatic photographing and storage of cross-sectional images of MLCC products, does not require manual operation, saves manpower, and improves shooting efficiency. The present invention also discloses a method for automatically photographing cross-sectional images of MLCC products.

Description

Technical Field

[0001] The present invention relates to the technical field of chip-type multilayer ceramic capacitor detection, and in particular to a device and method for automatically photographing a cross-sectional image of an MLCC product. Background Art

[0002] Destructive physical analysis (DPA) is an extremely important method for evaluating the quality of MLCC (Multi-layer Ceramic Capacitors) products. It can directly evaluate whether the internal structure of the product is qualified.

[0003] At present, MLCC physical destructive analysis (DPA) is all done manually. Specifically, after the MLCC product is sliced, it is placed under a metallographic microscope. During the shooting process, the magnification of the microscope objective lens needs to be manually changed to zoom in and out the image. The position and height of the movable platform under the microscope also need to be manually adjusted so that the MLCC section to be photographed is located at the focus of the microscope. In addition, during the shooting process, the section of each MLCC sample needs to be magnified and photographed at multiple positions of the section. Therefore, it is necessary to move the platform under the microscope multiple times and replace the microscope objective lens for each sample. After the captured image is transferred to the computer, it is necessary to manually click the save button on the computer and select the folder and name the file. The existing manual shooting method is time-consuming and labor-intensive, and the detection efficiency is low.

[0004] Therefore, it is necessary to provide a device and method that can automatically capture cross-sectional images of MLCC products to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a device capable of automatically photographing cross-sectional images of MLCC products.

[0006] Another object of the present invention is to provide a method capable of automatically photographing cross-sectional images of MLCC products.

[0007] To achieve the above-mentioned purpose, the technical solution of the present invention is: to provide a device for automatically photographing cross-sectional images of MLCC products, which includes a control device and a camera, a metallographic microscope, a loading platform, and a light source electrically connected to the control device respectively, the camera being rotatably mounted on the upper end of the metallographic microscope, the light source being disposed at the lower end of the metallographic microscope, the loading platform being disposed below the metallographic microscope and being movable in horizontal and vertical directions, the control device being used to control the movement of the loading platform so that the sample thereon is located at the focal position of the metallographic microscope, and being used to control the metallographic microscope to automatically adjust the magnification and obtain the light and dark fields of the metallographic microscope, and being used to control the light source to adjust its brightness and coldness and warmth, and being used to control the camera to photograph the sample.

[0008] Preferably, the device for automatically photographing cross-sectional images of MLCC products also includes a display device, which is electrically connected to the control device and data-connected to the camera for displaying pictures taken by the camera.

[0009] Preferably, the device for automatically photographing cross-sectional images of MLCC products also includes a driving mechanism connected to the loading platform and a rotating mechanism connected to the camera, the driving mechanism and the rotating mechanism are electrically connected to the control device, respectively, the loading platform is driven to move horizontally or vertically by the driving device, and the camera is driven to rotate by the rotating mechanism.

[0010] Preferably, the device for automatically photographing cross-sectional images of MLCC products further comprises a mounting frame, and the camera, the metallographic microscope and the loading platform are all mounted on the mounting frame.

[0011] Preferably, the control device is also used to obtain the shooting areas that need to be photographed for various types of MLCC sample cross-section models, the shooting order of each shooting area and the shooting parameters corresponding to each shooting area, and to control the camera to shoot the same type of MLCC sample cross-sections according to the shooting method of the MLCC sample cross-section model.

[0012] Compared with the prior art, since the device for automatically photographing the cross-section image of MLCC products of the present invention is provided with a camera, a metallographic microscope, a loading platform and a first light source which are respectively electrically connected to the control device, the loading platform can be moved horizontally and vertically under the control of the control device, so that the sample thereon is located at the focal position of the metallographic microscope. At the same time, the metallographic microscope can automatically adjust the magnification under the control of the control device, and the first light source can automatically adjust its brightness, coldness and warmth, and light and dark fields under the control of the control device. Finally, the control device controls the camera to automatically photograph the sample in a preset manner and automatically names and stores the photographed photos. Therefore, fully automatic photographing and storage of the cross-section of MLCC products can be achieved without manual operation, thus saving manpower, improving shooting efficiency, and avoiding errors caused by manual operation.

[0013] Correspondingly, the present invention also provides a method for automatically photographing a cross-sectional image of an MLCC product, which comprises the following steps:

[0014] (1) Presetting and storing a first shooting sequence of multiple MLCC sample sections;

[0015] (2) Preset and store various types of MLCC sample cross-section models;

[0016] (3) Presetting and storing the shooting area to be shot for each of the MLCC sample cross-section models, the second shooting order of each of the shooting areas, and the shooting parameters corresponding to each of the shooting areas;

[0017] (4) photographing the cross section of the MLCC sample on the loading platform, and comparing the cross section of the MLCC sample with various types of cross section models of the MLCC sample one by one to identify the type of the cross section of the MLCC sample;

[0018] (5) Controlling the movement of the loading platform according to the first shooting sequence and moving each of the MLCC sample sections to the focal position of the metallographic microscope one by one, and then controlling the camera to shoot each of the MLCC sample sections one by one according to the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model, and automatically naming and storing the photographs of each MLCC sample section taken in the said sequence.

[0019] Preferably, in the method for automatically photographing a cross-sectional image of an MLCC product of the present invention, step (2) comprises the following steps:

[0020] (21) controlling the movement of the loading platform so that each type of MLCC sample section on the loading platform moves to the focal position of the metallographic microscope one by one;

[0021] (22) Control the camera to photograph each type of MLCC sample cross section one by one, and automatically name each type of MLCC sample cross section model according to the photographing order and store them in sequence as each MLCC sample cross section model.

[0022] Preferably, in the method for automatically photographing a cross-sectional image of an MLCC product of the present invention, step (3) comprises the following steps:

[0023] (31) photographing each area of ​​a type of the MLCC sample cross-section model in a certain order, and adjusting corresponding photographing parameters during the process of photographing each area;

[0024] (32) controlling the movement of the loading platform to correct the position of the MLCC sample cross-section model;

[0025] (33) presetting the required number of the photographing areas and the second photographing sequence of each of the photographing areas;

[0026] (34) photographing each area on the MLCC sample cross-section model in sequence according to the second photographing sequence, naming and storing the photographs in sequence according to the photographing sequence, and storing the photographing parameters corresponding to the photographing of each area;

[0027] (35) Return to the above step (31) to shoot another type of the MLCC sample cross-sectional model until the shooting area, shooting parameters and second shooting sequence of all types of the MLCC sample cross-sectional models are preset and stored.

[0028] Preferably, in the method for automatically photographing cross-sectional images of MLCC products of the present invention, the step (5) of "controlling the camera to photograph each cross-sectional image of the MLCC sample according to the photographing area, photographing parameters and second photographing sequence of the same type of cross-sectional model of the MLCC sample" includes the following steps:

[0029] (51) Retrieving the shooting area, shooting parameters, and second shooting order of the MLCC sample cross-section model of the same type;

[0030] (52) controlling the movement of the loading platform so that a corresponding area on the cross section of the MLCC sample is located at the focal position of the metallographic microscope;

[0031] (53) According to the shooting parameters of the corresponding shooting area of ​​the MLCC sample section model, the metallographic microscope is controlled to adjust the corresponding magnification, and then the loading platform 1 is controlled to move so that the corresponding area on the MLCC sample section moves to the focal position of the metallographic microscope after the magnification is changed;

[0032] (54) According to the shooting parameters of the shooting area of ​​the MLCC sample cross-section model, the light source is controlled to automatically adjust the temperature and brightness, and the light and dark fields of the metallographic microscope are selected;

[0033] (55) controlling the rotation of the camera to align the photograph of the photographed area of ​​the MLCC sample section;

[0034] (56) controlling the camera to photograph the photographing area on the cross section of the MLCC sample, and automatically naming and storing the photographed photos;

[0035] (57) Return to the above step (52) until all corresponding areas on the cross section of the MLCC sample are photographed, and then all the photographs taken are automatically stored in the order of naming.

[0036] Preferably, in the method of automatically photographing cross-sectional images of MLCC products of the present invention, the photographing parameters include the magnification of the metallographic microscope, the light and dark fields of the metallographic microscope, the coldness and warmth of the light source, and the brightness.

[0037] Compared with the prior art, in the method of automatically photographing MLCC product cross-section images of the present invention, various types of MLCC sample cross-section models are first established and stored. After the type of MLCC sample cross-section on the carrier platform is identified, the MLCC sample cross-sections on the carrier platform are photographed one by one according to the photographing method of the same type of MLCC sample cross-section model. During the photographing process, the carrier platform is controlled to move horizontally and vertically so that the sample thereon is located at the focal position of the metallographic microscope, and the metallographic microscope is controlled to automatically adjust the magnification, and the light source is controlled to automatically adjust its brightness, coldness and warmth, and light and dark fields according to the MLCC sample cross-section model. Finally, the photographed photos are automatically named and stored. Therefore, fully automatic photographing and storage of MLCC product cross-sections can be achieved without manual operation, thus saving manpower, improving shooting efficiency, and avoiding errors caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of a device for automatically photographing cross-sectional images of MLCC products according to the present invention.

[0039] Figure 2 It is a schematic diagram of the structure of a fixture for carrying multiple MLCC sample sections of the present invention.

[0040] Figure 3a-3d It is a structural schematic diagram of the MLCC sample cross-section model of the present invention.

[0041] Figure 4 yes Figure 3a Schematic diagram of the overall shooting area of ​​the MLCC sample cross-section model.

[0042] Figure 5a-5h yes Figure 3a Schematic diagram of the local shooting area of ​​the MLCC sample cross-section model. DETAILED DESCRIPTION

[0043] The embodiments of the present invention are now described with reference to the accompanying drawings, in which similar element numbers represent similar elements. The device 100 and method for automatically photographing cross-sectional images of MLCC products of the present invention are mainly suitable for photographing cross-sectional images of micro-ceramic capacitors (Multi-layer Ceramic Capacitors, referred to as MLCC) samples, but are not limited to this, and can also be used for photographing all samples with fixed models other than MLCC. Of course, it is not limited to taking photos, and can also be used to measure the length, area, etc. of each element in the picture.

[0044] See below first Figure 1As shown, the device 100 for automatically photographing cross-sectional images of MLCC products provided by the present invention includes a control device 110 and a camera 120, a metallographic microscope 130, a loading platform 140, and a light source 150 that are electrically connected to the control device 110 respectively; in addition, the device 100 for automatically photographing cross-sectional images of MLCC products also includes a mounting bracket 170. Among them, the camera 120, the metallographic microscope 130, and the loading platform 140 are all installed on the mounting frame 170, and the camera 120 can be rotatably installed on the upper end of the metallographic microscope 130, the light source 150 is arranged at the lower end of the metallographic microscope 130, and the loading platform 140 is arranged below the metallographic microscope 130 and can move in the horizontal direction and the vertical direction; the control device 110 is used to control the movement of the loading platform 140 so that the sample thereon is located at the focal position of the metallographic microscope 130, and it is also used to control the metallographic microscope 130 to automatically adjust the magnification and control the light source 150 to adjust its brightness and warmth, and it is also used to control the camera 120 to shoot the sample.

[0045] More specifically, in the present invention, different types of MLCC sample cross-section models can be photographed by the camera 120, and then the control device 110 establishes and stores various types of MLCC sample cross-section models. Then the camera 120 photographs different areas of various types of MLCC sample cross-section models, and the control device 110 establishes the shooting areas that need to be photographed for each type of MLCC sample cross-section model and the shooting order of each shooting area, and during the shooting process, the control device 110 records and saves the shooting parameters of each shooting area. In this way, in the subsequent shooting process, when the type of the MLCC sample cross-section is the same as the stored MLCC sample cross-section model, the control device 110 directly calls the corresponding shooting method of the MLCC sample cross-section model, and controls the camera to automatically shoot according to the corresponding shooting method, without the need for manual operation, thereby improving the shooting efficiency.

[0046] More specifically, the metallographic microscope 130 in the present invention has two shooting modes: bright field and dark field. Bright field means that the illumination in the metallographic microscope 130 is irradiated to the sample surface in a vertical or nearly vertical manner through the objective lens, and the light is reflected and returned to the objective lens to form an image, so that the field of view of the metallographic microscope 130 presents a bright background; dark field means that the illumination in the metallographic microscope 130 is obliquely irradiated to the sample surface through the periphery of the objective lens, and the sample has a scattered or reflected effect. These lights enter the objective lens to form an image, so that the field of view of the metallographic microscope 130 presents a dark background. Before shooting, the bright field or dark field of the metallographic microscope 130 can be selected according to needs.

[0047] Continue to view Figure 1As shown, in a preferred embodiment of the device 100 for automatically photographing cross-sectional images of MLCC products of the present invention, it also includes a display device 160. The display device 160 can be installed on a mounting frame 170, or can be arranged at a position outside the mounting frame 170 for easy observation. The display device 160 is data-connected to the camera 120, and is also electrically connected to the control device 110 for displaying pictures taken by the camera 120.

[0048] Continue to view Figure 1 As shown, in a preferred embodiment of the device 100 for automatically photographing cross-sectional images of MLCC products of the present invention, it also includes a driving mechanism connected to the loading platform 140 and a rotating mechanism connected to the camera 120, the driving mechanism and the rotating mechanism are respectively electrically connected to the control device 110, the driving mechanism drives the loading platform 140 to move horizontally or vertically, and the rotating mechanism drives the camera 120 to rotate. Among them, the structures of the driving mechanism and the rotating mechanism are conventional settings in this field and are not described in detail.

[0049] Combine the following Figure 1-5h As shown, the working principle and process of the device 100 for automatically photographing cross-sectional images of MLCC products of the present invention are explained.

[0050] First, various types of MLCC sample section models are established and stored. Specifically, there are many types of MLCC sections, for example, Figure 3a The section with the terminal electrodes and along its longitudinal direction is shown in FIG. Figure 3b The cross section without terminal electrodes and along its longitudinal direction as shown in Figure 3c The cross section with the terminal electrode and along its transverse direction shown in FIG. Figure 3d The cross-section without end electrodes and along its transverse direction as shown in the figure, etc. Therefore, it is necessary to shoot various types of MLCC sample cross-sections to obtain various types of MLCC sample cross-section models, and then store the various types of MLCC sample cross-section models in sequence after naming them in the order of shooting for subsequent calls.

[0051] In one embodiment of the present invention, Figure 3a The photograph obtained by taking the cross-section type shown in is named the first MLCC sample cross-section model. Figure 3b The photograph obtained by taking the cross-section type shown in the figure is named the second MLCC sample cross-section model, and Figure 3c The photo taken of the cross-section type shown in is named the third MLCC sample cross-section model. Figure 3dThe photograph obtained by taking the section type shown in is named the fourth MLCC sample section model, and so on, so as to obtain and store all types of MLCC sample section models. Furthermore, the size of each type of MLCC sample section model is obtained and stored corresponding to the model for subsequent call.

[0052] More preferably, for the shooting of multiple MLCC sample sections, a first shooting order of the multiple MLCC sample sections can be pre-set. Specifically, the multiple MLCC sample sections 200 are generally placed on the fixture 300 in an orderly manner, such as Figure 2 As shown, therefore, the MLCC sample sections on the fixture can be set to be photographed from top to bottom or from left to right in sequence. The order from top to bottom mentioned here is Figure 2 The images are taken in a row-by-row order, from left to right. Figure 2 In the example, the first shooting sequence is obtained by shooting in a row-by-row order. Of course, the first shooting sequence here can be flexibly set according to the specific fixture structure or detection needs, and is not limited to the above-mentioned method.

[0053] Then, the shooting areas that need to be photographed for each type of MLCC sample cross-section model, the second shooting order of each shooting area, and the shooting parameters corresponding to each shooting area are preset and stored. Specifically, the entirety and / or local area of ​​each type of MLCC sample cross-section model is photographed in a certain order to obtain the shooting area and the second shooting order of each shooting area. In addition, in order to achieve the desired shooting effect, it is necessary to adjust the magnification of the metallographic microscope 130, the warmth and coldness of the light source 150, the brightness, and select the bright and dark fields of the metallographic microscope 130 when shooting each area, and record the magnification of the metallographic microscope 130, the warmth and coldness of the light source 150, the brightness, and the bright and dark fields of the metallographic microscope 130 to obtain the shooting parameters of each shooting area.

[0054] See also Figure 4-5h As shown, in a specific embodiment of the present invention, with the above Figure 3a Taking the first MLCC sample cross-section model in the example, first take a picture of the entire cross-section model, and name the obtained entire picture as Photo 1 and store it. Figure 4 As shown, then shoot in order from top to bottom Figure 3a The local area of ​​the left end part of the first section model in the figure is selected, and the obtained photos are named as photo 2, photo 3, photo 4 in sequence and stored in sequence, such as Figure 5a-5c As shown, then shoot in order from top to bottom Figure 3a The local area of ​​the right end part of the first section model in the figure is selected, and the obtained photos are named as photo 5, photo 6, and photo 7 in sequence and stored in sequence, such as Figure 5d-5fAs shown, take the final shot Figure 3a The middle area of ​​the first section model in the figure is obtained, and the obtained photos are named as photo 8 and photo 9 in sequence and stored in sequence, such as Figure 5g-5h As shown, this is completed Figure 3a The shooting area of ​​the first MLCC sample cross-section model and the preset and storage of the second shooting sequence.

[0055] The above process is repeated until the shooting areas, shooting parameters and second shooting sequences of all types of the MLCC sample cross-section models are preset and stored.

[0056] During the formal shooting, the control device 110 first identifies the type of the MLCC sample section to be photographed on the loading platform 140, and then calls the shooting area, shooting parameters and second shooting sequence of the corresponding type of MLCC sample section model.

[0057] Finally, the control device 110 controls the movement of the loading platform 140 according to the first shooting sequence and moves each MLCC sample section to the focal position of the metallographic microscope 130 one by one, and then controls the camera 120 to shoot each MLCC sample section in turn according to the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model, and automatically names and stores the photographs of each MLCC sample section in sequence.

[0058] For example, after the above comparison, the type of the MLCC sample section to be photographed is the same as the above Figure 3a If the first MLCC sample section model is the same as that shown in , the shooting area, shooting parameters, and second shooting order of the first MLCC sample section model are retrieved. Next, the control device 110 controls the movement of the loading platform 140, and a corresponding area on the MLCC sample section is located at the focal position of the metallographic microscope 130. Since the entire MLCC sample section is photographed, it is only necessary to move the MLCC sample section to the focal position of the metallographic microscope 130 for photographing. Therefore, the photographing of the local area is mainly described here. For example, the area on the MLCC sample section corresponding to the image 2 of the first MLCC sample section model is moved to the focal position of the metallographic microscope 130. This area is described here as the second area for the convenience of subsequent description.

[0059] Then, according to the magnification of the metallographic microscope 130 in the aforementioned picture 2, the control device 110 controls the metallographic microscope 130 to adjust the corresponding magnification, and then controls the movement of the loading platform 140 so that the second area is again located at the focal position of the metallographic microscope 130 after the magnification is changed, so as to avoid the blurring of the photo due to inaccurate focus caused by manual shooting. Then, according to the warmth and brightness of the light source 150 in the aforementioned picture 2 and the bright and dark fields of the metallographic microscope 130, the light source 150 is controlled to automatically adjust to ensure that the photo taken of the second area is consistent with the warmth and brightness of the picture 2, so as to avoid errors caused by inconsistent warmth and brightness of the photos caused by different manual shooting.

[0060] Next, the control device 110 controls the camera 120 to rotate so that the photo of the second area of ​​the MLCC sample cross section is aligned to prevent skew during manual shooting. Finally, the control device 110 controls the camera 120 to shoot the second area on the MLCC sample cross section, and names the shot photo as photo 2 and stores it in a corresponding folder.

[0061] The above process is repeated until all corresponding areas on the cross section of the MLCC sample are photographed, and then all the photographs taken are automatically stored in the order of naming.

[0062] In summary, since the device 100 for automatically photographing the cross-sectional image of an MLCC product of the present invention is provided with a camera 120, a metallographic microscope 130, a loading platform 140, and a light source 150, which are respectively electrically connected to the control device 110, the loading platform 140 can be moved horizontally and vertically under the control of the control device 110, so that the sample thereon is located at the focal position of the metallographic microscope 130. At the same time, the metallographic microscope 130 can automatically adjust the magnification under the control of the control device 110, and the light source 150 can automatically adjust its brightness, coldness and warmth, and light and dark fields under the control of the control device 110. Finally, the control device 110 controls the camera 120 to automatically photograph the sample in a preset manner and automatically name and store the photographed photos. Therefore, fully automatic photographing and storage of the cross-sectional surface of the MLCC product can be achieved without manual operation, thus saving manpower, improving shooting efficiency, and avoiding errors caused by manual operation.

[0063] Combine the following Figure 1-5h As shown, the method for automatically photographing a cross-sectional image of an MLCC product provided by the present invention uses the device 100 for automatically photographing a cross-sectional image of an MLCC product as described above, and the structural part of the device 100 is not repeatedly described here. The method for automatically photographing a cross-sectional image of an MLCC product is now described, and the method comprises the following steps:

[0064] S01: Preset and store the first shooting order of multiple MLCC sample sections;

[0065] See also Figure 2 As shown, usually, multiple MLCC sample sections 200 are continuously photographed, and these MLCC sample sections 200 are generally placed in order on the fixture 300. Therefore, before the formal shooting, it is necessary to set the first shooting order of the multiple MLCC sample sections 200. For example, the MLCC sample sections 200 on the fixture 300 are photographed in order from top to bottom or from left to right. The order from top to bottom here is Figure 2 The images are taken in a row-by-row order, from left to right. Figure 2 Of course, the first shooting sequence here can be flexibly set according to the specific structure of the fixture 300 or the detection needs, and is not limited to the above-mentioned method.

[0066] It should be noted that Figure 2 The figure only schematically shows a state where a plurality of MLCC sample sections 200 are placed on the fixture 300. The structure of the fixture 300 and the MLCC sample sections 200 is not limited to the structure of the fixture 300 and the MLCC sample sections 200. Figure 2 The limit is in.

[0067] S02: Preset and store various types of MLCC sample section models;

[0068] See also Figure 3a-3d As shown in the figure, MLCC is formed by stacking ceramic dielectric diaphragms with printed inner electrodes in an offset manner and then sintering at a high temperature once to form a ceramic chip, and then sealing the two ends of the ceramic chip with a metal layer (terminal electrode). Therefore, there are many types of cross-sections of MLCC, for example, Figure 3a The section with the terminal electrodes and along its longitudinal direction is shown in FIG. Figure 3b The section without terminal electrodes and along its longitudinal direction is shown in Figure 3c The figure shows a cross section with terminal electrodes and along the transverse direction. Figure 3d The cross-section without end electrodes and along its transverse direction as shown in the figure, etc. Therefore, it is necessary to shoot various types of MLCC sample cross-sections to obtain various types of MLCC sample cross-section models, and then store the various types of MLCC sample cross-section models in sequence after naming them in the order of shooting for subsequent calls.

[0069] S03: Preset and store the shooting area required to be shot for each of the MLCC sample section models, the second shooting order of each of the shooting areas, and the shooting parameters corresponding to each of the shooting areas;

[0070] The shooting area described in this step includes the overall area and / or local area of ​​the MLCC sample cross-section model. Since the areas that need to be shot and enlarged are different for each type of MLCC sample cross-section model, it is necessary to preset the shooting areas that need to be shot for each type of MLCC sample cross-section model and the second shooting order of each shooting area.

[0071] In addition, combined Figure 1 As shown, in the process of shooting the whole or local area of ​​each type of MLCC sample cross-section model, in order to achieve the desired shooting effect, it is necessary to adjust the magnification of the metallographic microscope 130, the warmth and coldness of the light source 150, the brightness, or select the light and dark field of the metallographic microscope 130. Therefore, when shooting each area, it is necessary to automatically record the magnification of the metallographic microscope 130, the warmth and coldness of the light source 150, the brightness, and the light and dark field of the metallographic microscope 130 when shooting the area. The magnification of the metallographic microscope 130, the warmth and coldness of the light source 150, the brightness, and the light and dark field of the metallographic microscope 130 constitute the shooting parameters of the shooting area. Of course, the shooting parameters are not limited to the aforementioned parameters and can be flexibly set according to the needs of shooting.

[0072] In the present invention, the bright field of the metallographic microscope 130 refers to the illumination in the metallographic microscope 130 irradiating the sample surface in a vertical or nearly vertical manner through the objective lens, and the light is reflected and returned to the objective lens to form an image, so that the field of view of the metallographic microscope 130 presents a bright background; the dark field refers to the illumination in the metallographic microscope 130 obliquely irradiating the sample surface through the periphery of the objective lens, and the sample scatters or reflects, and these lights enter the objective lens to form an image, so that the field of view of the metallographic microscope 130 presents a dark background. Before shooting, the bright field or dark field of the metallographic microscope 130 can be selected according to needs.

[0073] S04: photographing the MLCC sample section on the loading platform, and comparing the MLCC sample section with various types of MLCC sample section models one by one to identify the type of the MLCC sample section;

[0074] Specifically, when a jig having multiple MLCC sample sections is placed at the center of the loading platform 140 below the metallographic microscope 130, it is first necessary to identify which type of the MLCC sample section to be photographed on the jig belongs to in order to facilitate subsequent photography.

[0075] In a specific embodiment of the present invention, after detecting that there are a jig and an MLCC sample section on the carrier platform 140, the carrier platform 140 is first controlled to move so that at least one MLCC sample section is located at the focal position of the metallographic microscope 130, and then the camera 120 is controlled to photograph the MLCC sample section to be photographed, and the photographed MLCC sample section is compared one by one with the various types of MLCC sample section models stored in the above step S02 to identify the type of the MLCC sample section to be photographed.

[0076] S05: Control the movement of the loading platform according to the first shooting sequence and move each of the MLCC sample sections to the focal position of the metallographic microscope one by one, and then control the camera to shoot each MLCC sample section one by one according to the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model, and automatically name and store the photographs of each MLCC sample section in sequence.

[0077] More specifically, when shooting, according to the first shooting sequence set in the above step S01, for example, according to the first shooting sequence from left to right, first control the movement of the stage 140 to move the first MLCC sample section to the focal position of the metallographic microscope 130, and then retrieve the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model obtained by comparison in step S04, control the camera 120 to shoot the first MLCC sample section in the same manner as the MLCC sample section model, and after shooting, control the stage 140 to move left and right again to move the second MLCC sample section to the focal position of the metallographic microscope 130, and control the camera 120 to shoot again in the same manner as the MLCC sample section model. Repeat the above steps until all MLCC sample sections in the first row are shot.

[0078] After the first row of MLCC sample sections are photographed, the loading platform 140 is controlled to move forward and backward so that the second row of MLCC sample sections are moved to the bottom of the metallographic microscope 130 in sequence, and the above-mentioned photographing process is repeated for photographing.

[0079] See below Figure 3a-3d As shown, in a specific implementation of the method for automatically photographing a cross-sectional image of an MLCC product of the present invention, the above step S02 specifically includes the following steps:

[0080] S21: Control the movement of the loading platform 140 so that each type of MLCC sample section on the loading platform 140 moves to the focal position of the metallographic microscope 130 one by one;

[0081] Specific reference Figure 3a-3dAs shown, Figure 3a The one shown in the figure is a cross-section type with terminal electrodes and along its longitudinal direction. Figure 3b The one shown in the figure is a section type without terminal electrodes and along its longitudinal direction. Figure 3c The one shown in the figure is a cross-sectional type with terminal electrodes and along its transverse direction. Figure 3d The cross-sectional type shown in FIG. 1 is a cross-sectional type without terminal electrodes and along the transverse direction thereof. It can be understood that Figure 3a-3d What is shown are only some of the cross-sectional types of the schematic diagram. The cross-sectional types of MLCC are certainly not limited to the above types.

[0082] More specifically, the above Figure 3a-3d The types of MLCC sample sections shown in the figure can be placed on a fixture at the same time, and then placed on a carrier platform 140 by the fixture. The movement of the carrier platform 140 can be controlled to move each type of MLCC sample section to the focal position of the metallographic microscope 130 one by one. Each type of MLCC sample section can also be placed on the carrier platform 140 separately. After each type of MLCC sample section is placed, the movement of the carrier platform 140 is controlled to move the MLCC sample section on it to the focal position of the metallographic microscope 130.

[0083] S22: Control the camera 120 to photograph each type of MLCC sample section one by one, and automatically name each type of MLCC sample section according to the photographing order and store them in sequence as each MLCC sample section model.

[0084] Specifically, after controlling the camera 120 to photograph a type of MLCC sample cross section, the photographed photos are automatically named, for example, Figure 3a The photos taken with the section type shown in the figure are named the first MLCC sample section model. Figure 3b The photograph obtained by taking the cross-section type shown in the figure is named the second MLCC sample cross-section model, and Figure 3c The photo taken of the cross-section type shown in is named the third MLCC sample cross-section model. Figure 3d The photograph obtained by taking the section type shown in is named the fourth MLCC sample section model, and so on, until all types of MLCC sample sections are photographed and named, and all types of MLCC sample section models are stored. At the same time, the size of each type of MLCC sample section model is obtained and stored corresponding to the model for subsequent call.

[0085] See below Figure 4 , Figure 5a-5h As shown, in a specific implementation of the method for automatically photographing a cross-sectional image of an MLCC product of the present invention, the above step S03 specifically includes the following steps:

[0086] S31: Control the movement of the loading platform so that the cross-section model of the MLCC sample of one type is located at the focal position of the metallographic microscope;

[0087] S32: Control the movement of the loading platform to correct the position of the MLCC sample cross-section model in step S31;

[0088] In a specific embodiment, the movement of the loading platform is controlled to align the MLCC sample cross-section model with the coordinate system of the metallographic microscope. After the position of the MLCC sample cross-section model is corrected, it is convenient to perform size calculations when photographing each local area in subsequent steps.

[0089] S33: presetting the number of required shooting areas and a second shooting order of each shooting area;

[0090] For different types of MLCC sample cross-section models, the areas that need to be photographed and magnified will be different. Therefore, for different types of MLCC sample cross-section models, it is mainly necessary to preset the number of local areas that need to be photographed, for example, four, six, eight, etc. of local areas are photographed, and then set the order of photographing local areas, for example, from left to right or from top to bottom, etc. The overall area is generally one picture. Therefore, the shooting area in the present invention includes the overall area and the local area, and the second shooting order includes the order of the overall area and the local area.

[0091] by Figure 3a Taking the first MLCC sample cross-section model in as an example, one shot is taken for the whole area, and eight shots are taken for the local area, and the shooting order of the local area is: three shots from top to bottom on the left, three shots from top to bottom on the right, and two shots from top to bottom in the middle. Therefore, the second shooting order is to shoot from the whole to the local area first, and then shoot in the order of the local area.

[0092] S34: photographing each area on the MLCC sample cross-section model in sequence according to the second photographing sequence, naming and storing the photographs in sequence according to the photographing sequence, and storing the photographing parameters corresponding to the photographing of each area;

[0093] Specifically, since the size of each type of MLCC sample section model has been obtained in the above step S22, the size of each local area of ​​the MLCC sample section model can be calculated according to the number of local areas and the shooting order of the local areas in step S33: Figure 3a Taking the first MLCC sample cross-section model as an example, we can calculate the sizes of the three pictures from top to bottom on the left, the three pictures from top to bottom on the right, and the two pictures from top to bottom in the middle.

[0094] Continue to view Figure 4 , Figure 5a-5h As shown, in a specific embodiment of the present invention, with the above Figure 3a Taking the first MLCC sample cross-section model in the example, first take a picture of the entire cross-section model, and name the obtained entire picture as Photo 1 and store it. Figure 4 As shown, then shoot in order from top to bottom Figure 3a The local area of ​​the left end part of the first section model in the figure is selected, and the obtained photos are named as photo 2, photo 3, photo 4 in sequence and stored in sequence, such as Figure 5a-5c As shown, then shoot in order from top to bottom Figure 3a The local area of ​​the right end part of the first section model in the figure is selected, and the obtained photos are named as photo 5, photo 6, and photo 7 in sequence and stored in sequence, such as Figure 5d-5f As shown, take the final shot Figure 3a The middle area of ​​the first section model in the figure is obtained, and the obtained photos are named as photo 8 and photo 9 in sequence and stored in sequence, such as Figure 5g-5h As shown, this is completed Figure 3a The shooting area of ​​the first MLCC sample cross-section model and the preset and storage of the second shooting sequence.

[0095] In the process of taking each photo mentioned above, the magnification of the metallographic microscope 130 can be adjusted as needed to enlarge or reduce the photographed picture. In this process, the movement of the loading platform 140 is also controlled to move the area to be photographed to the new focus after the magnification is changed. At the same time, the warmth and coldness, brightness of the light source 150 can be adjusted as needed, or the light and dark fields and other parameters of the metallographic microscope 130 can be selected. Then, the magnification of the metallographic microscope 130, the warmth and coldness, brightness of the light source 150, and the light and dark fields of the metallographic microscope 130 corresponding to each photo are stored corresponding to the photo, thereby obtaining the shooting parameters of each shooting area.

[0096] S35: Return to the above step S31 to shoot another type of the MLCC sample cross-sectional model until the shooting areas, shooting parameters and second shooting sequences of all types of the MLCC sample cross-sectional models are preset and stored.

[0097] See again Figure 1 , Figure 4 , Figure 5a-5hAs shown, in a specific implementation of the method for automatically photographing MLCC product cross-section images of the present invention, the above step S05 "controlling the camera to photograph each of the MLCC sample cross-sections one by one according to the shooting area, shooting parameters and second shooting sequence of the MLCC sample cross-section model of the same type, and automatically naming and storing the photographs of each MLCC sample cross-section obtained in sequence" specifically includes the following steps:

[0098] S51: Retrieve the shooting area, shooting parameters, and second shooting order of the MLCC sample section model of the same type;

[0099] After the comparison in step S04, the type of the MLCC sample section to be photographed is obtained. For example, the type of the MLCC sample section to be photographed is obtained after comparison. Figure 3a If the first MLCC sample section model is the same as shown in , the shooting area, shooting parameters, and second shooting sequence of the first MLCC sample section model are called up.

[0100] S52: Control the loading platform 140 to move so that a corresponding area on the cross section of the MLCC sample is located at the focal position of the metallographic microscope 130;

[0101] When photographing the entire MLCC sample section, it is only necessary to move the MLCC sample section to the focal position of the metallographic microscope 130 to photograph. Here, the photographing of a local area is mainly described. For example, the stage 140 is moved so that the MLCC sample section corresponding to the first MLCC sample section model is image 2 ( Figure 5a The area (as shown) is located at the focal position of the metallographic microscope 130, and this area is described here as the second area to facilitate subsequent description.

[0102] S53: According to the shooting parameters of the shooting area of ​​the MLCC sample section model, control the metallographic microscope 130 to adjust the corresponding magnification, and then control the object carrier 140 to move, so that the corresponding area on the MLCC sample section moves to the focal position of the metallographic microscope 130 after the magnification is changed;

[0103] Specifically, according to the magnification of the metallographic microscope 130 in the aforementioned picture 2, the metallographic microscope 130 is controlled to adjust the corresponding magnification, and then the loading platform 140 is controlled to move so that the second area is again located at the focal position of the metallographic microscope 130 after the magnification is changed, so as to avoid blurry photos caused by inaccurate focusing due to manual shooting.

[0104] S54: According to the shooting parameters of the shooting area of ​​the MLCC sample cross-section model, the light source is controlled to automatically adjust the temperature and brightness, and the light and dark fields of the metallographic microscope 130 are selected;

[0105] Similarly, according to the warmth and brightness of the light source 150 of the aforementioned picture 2 and the light and dark fields of the metallographic microscope 130, the light source 150 is controlled to automatically adjust to ensure that the photos taken of the second area are consistent with the warmth and brightness of picture 2, and the same light and dark fields as picture 2 are selected to avoid errors caused by inconsistent warmth and brightness of photos due to manual shooting.

[0106] S55: Control the camera 120 to rotate so that the photograph of the shooting area of ​​the MLCC sample section is aligned;

[0107] Specifically, the camera 120 is controlled to rotate so that the photo of the second area of ​​the cross section of the MLCC sample is aligned to prevent the photo from being skewed during manual photography.

[0108] S56: Control the camera 120 to photograph the photographing area on the cross section of the MLCC sample, and automatically name and store the photographed photos;

[0109] Specifically, the camera 120 is controlled to photograph the second area on the cross section of the MLCC sample, and the photographed photo is named Photo 2 and stored in a corresponding folder.

[0110] S57: Return to the above step S52 until all corresponding areas on the cross section of the MLCC sample are photographed, and then all the photographs taken are automatically stored in the order of naming.

[0111] In summary, since the method of automatically photographing MLCC product cross-section images of the present invention first establishes and stores various types of MLCC sample cross-section models, after identifying the type of MLCC sample cross-section on the carrier platform 140, the MLCC sample cross-sections on the carrier platform 140 are photographed one by one according to the photographing method of the same type of MLCC sample cross-section model. During the photographing process, the carrier platform 140 is controlled to move horizontally and vertically so that the sample thereon is located at the focal position of the metallographic microscope 130, and the metallographic microscope 130 is controlled to automatically adjust the magnification, and the light source is controlled to automatically adjust its brightness, coldness and warmth, and light and dark fields according to the MLCC sample cross-section model. Finally, the photographed photos are automatically named and stored. Therefore, fully automatic photographing and storage of MLCC product cross-sections can be achieved without manual operation, saving manpower, and improving shooting efficiency. At the same time, errors caused by manual operation can also be avoided.

[0112] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A device for automatically photographing cross-sectional images of MLCC products, characterized in that: It comprises a control device and a camera, a metallographic microscope, a loading platform and a light source which are electrically connected to the control device respectively, wherein the camera is rotatably mounted on the upper end of the metallographic microscope, the light source is arranged at the lower end of the metallographic microscope, the loading platform is arranged below the metallographic microscope and can move in the horizontal direction and the vertical direction, the control device is used to control the movement of the loading platform so that the sample on the loading platform is located at the focal position of the metallographic microscope, and is used to control the metallographic microscope to automatically adjust the magnification and obtain the bright and dark fields of the metallographic microscope, and is also used to control the light source to adjust its brightness and coldness and warmth, and is used to control the camera to shoot the sample; The control device is also used to establish and store various types of MLCC sample section models, a first shooting order of multiple MLCC sample sections, and a shooting area that needs to be shot for each of the MLCC sample section models, a second shooting order of each of the shooting areas, and shooting parameters corresponding to each of the shooting areas; The control device is also used to identify the type of the MLCC sample section to be photographed on the loading platform, and retrieve the shooting area, second shooting sequence and shooting parameters required to be photographed for the corresponding type of the MLCC sample section model; The control device controls the movement of the loading platform according to the first shooting sequence and moves the MLCC sample sections one by one to the focal position of the metallographic microscope, and then controls the camera to shoot the same type of MLCC sample sections according to the shooting method of the MLCC sample section model according to the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model.

2. The device for automatically photographing a cross-sectional image of an MLCC product according to claim 1, characterized in that: It also includes a display device, which is electrically connected to the control device and data connected to the camera, and is used to display the pictures taken by the camera.

3. The device for automatically photographing a cross-sectional image of an MLCC product according to claim 1, characterized in that: It also includes a driving mechanism connected to the loading platform and a rotating mechanism connected to the camera. The driving mechanism and the rotating mechanism are electrically connected to the control device respectively. The driving mechanism drives the loading platform to move horizontally or vertically, and the rotating mechanism drives the camera to rotate.

4. The device for automatically photographing a cross-sectional image of an MLCC product according to claim 1, characterized in that: It also includes a mounting frame, and the camera, the metallographic microscope, and the object-carrying platform are all mounted on the mounting frame.

5. A method for automatically photographing a cross-sectional image of an MLCC product, using the device for automatically photographing a cross-sectional image of an MLCC product as described in any one of claims 1 to 4, characterized in that: The steps include: (1) Preset and store the first shooting order of multiple MLCC sample sections; (2) Preset and store various types of MLCC sample cross-section models; (3) Presetting and storing the shooting area to be shot for each of the MLCC sample cross-section models, the second shooting order of each of the shooting areas, and the shooting parameters corresponding to each of the shooting areas; (4) photographing the cross section of the MLCC sample on the loading platform, and comparing the cross section of the MLCC sample with various types of cross section models of the MLCC sample one by one to identify the type of the cross section of the MLCC sample; (5) Controlling the movement of the loading platform according to the first shooting sequence and moving each of the MLCC sample sections to the focal position of the metallographic microscope one by one, and then controlling the camera to shoot each of the MLCC sample sections one by one according to the shooting area, shooting parameters and second shooting sequence of the same type of MLCC sample section model, and automatically naming and storing the photographs of each MLCC sample section in sequence.

6. The method for automatically photographing a cross-sectional image of an MLCC product as claimed in claim 5, characterized in that: The step (2) comprises the following steps: (21) controlling the movement of the loading platform so that each type of MLCC sample section on the loading platform moves to the focal position of the metallographic microscope one by one; (22) Controlling the camera to photograph each type of MLCC sample cross section one by one, and automatically naming each type of MLCC sample cross section model according to the photographing order and storing them in sequence as each of the MLCC sample cross section models.

7. The method for automatically photographing a cross-sectional image of an MLCC product as claimed in claim 5, characterized in that: The step (3) comprises the following steps: (31) controlling the movement of the loading platform so that a type of MLCC sample cross-section model on the loading platform is located at a focal position of the metallographic microscope; (32) controlling the movement of the loading platform to correct the position of the MLCC sample cross-section model; (33) presetting the required number of the shooting areas and the second shooting order of each of the shooting areas; (34) photographing each area on the MLCC sample cross-section model in sequence according to the second photographing sequence, naming and storing the photographs in sequence according to the photographing sequence, and storing the photographing parameters corresponding to the photographing of each area; (35) Return to the above step (31) to photograph another type of the MLCC sample cross-sectional model until the shooting area, shooting parameters and second shooting sequence of all types of the MLCC sample cross-sectional models are preset and stored.

8. The method for automatically photographing a cross-sectional image of an MLCC product as claimed in claim 5, characterized in that: In the step (5), "controlling the camera to photograph each of the MLCC sample sections one by one according to the photographing area, photographing parameters and second photographing sequence of the MLCC sample section model of the same type, and automatically naming and sequentially storing the photographs of each of the MLCC sample sections obtained" includes the following steps: (51) Retrieving the shooting area, shooting parameters, and second shooting sequence of the MLCC sample cross-section model of the same type; (52) controlling the movement of the loading platform so that a corresponding area on the cross section of the MLCC sample is located at the focal position of the metallographic microscope; (53) controlling the metallographic microscope to adjust the corresponding magnification according to the shooting parameters of the corresponding shooting area of ​​the MLCC sample cross-section model, and then controlling the movement of the loading platform to move the corresponding area on the MLCC sample cross-section to the focal position of the metallographic microscope after the magnification is changed; (54) According to the shooting parameters of the shooting area of ​​the MLCC sample cross-section model, the light source is controlled to automatically adjust the temperature and brightness, and the light and dark fields of the metallographic microscope are selected; (55) controlling the rotation of the camera to align the photograph of the photographed area of ​​the MLCC sample section; (56) controlling the camera to photograph the photographing area on the cross section of the MLCC sample, and automatically naming and storing the photographed photos; (57) Return to the above step (52) until all corresponding areas on the cross section of the MLCC sample are photographed, and then all the photographs taken are automatically stored in the order of naming.

9. The method for automatically photographing a cross-sectional image of an MLCC product as described in any one of claims 5 to 8, characterized in that: The shooting parameters include the magnification of the metallographic microscope, the light and dark fields of the metallographic microscope, the coldness and warmth of the light source, and the brightness.

Images