An ir defective product analysis aid for mlcc

Abstract

The utility model discloses an IR defective product analysis auxiliary device of MLCC, including bottom plate, the electrically conductive vessel fixed mounting is in the top of bottom plate, and the electrically conductive vessel is used for storing electrolytic solution, and clamping subassembly sets up in the electrically conductive vessel, and the detection piece is set up in the inside of electrically conductive vessel through clamping subassembly, and power module installs in the top of bottom plate, and power module is used for providing power supply to the detection piece electroplating, and installation casing sets up in the electrically conductive vessel, and elastic member fixed mounting is in the top of installation casing, and the bottom of elastic member and detection piece extrusion are inlaid. The utility model discloses the cooperation use mode of electrically conductive vessel, clamping subassembly and power module, and the inside storage of electrically conductive vessel has the electroplating solution, and the short circuit layer corresponding Ni electrode of detection piece occurs replacement reaction constantly after electrification, and Ni electrode is dissolved constantly, thereby leading to the color of this layer and other positions produce differentiation, and the position of short circuit layer is fast and definite, thereby improving the efficiency of MLCC defective product analysis.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary devices, and in particular to an auxiliary device for IR defect analysis of MLCCs. Background Technology

[0002] MLCC (multi-layer ceramic capacitor) is an abbreviation for multilayer ceramic chip capacitor. In order to reduce costs, MLCC process technology was developed with nickel as the internal electrode and copper as the terminal electrode, and it is widely used in the market.

[0003] MLCCs can experience various short circuits in practical use. To investigate the causes of short circuits, accurate analysis of defective products is crucial. During actual use or experimentation, short circuits can occur when two opposing internal electrodes become connected due to various abnormalities, resulting in a continuous circuit at both ends and the product losing its MLCC characteristics. Since the short circuit occurs inside the MLCC, the industry practice is to perform DPA grinding on defective products. Grinding is typically done along the LT plane, searching for the defective location while grinding. This process is time-consuming, and because the observation area is very large, it is easy to miss some defects, thus introducing a certain degree of contamination. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary device for IR defect analysis of MLCCs to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for IR defect analysis of MLCCs, comprising:

[0006] Base plate;

[0007] A conductive container, which is fixedly installed on the top of the base plate, is used to store an electrolytic solution;

[0008] A clamping assembly disposed on a conductive vessel;

[0009] A testing element, wherein the testing element is disposed inside a conductive vessel via a clamping assembly;

[0010] A power module is mounted on the top of the base plate and is used to provide power for electroplating the test piece.

[0011] Preferably, the clamping assembly includes:

[0012] Mounting housing, the mounting housing being disposed on a conductive vessel;

[0013] A clamping member is symmetrically arranged at the bottom of the mounting housing and clamps the top of the outer wall of the detection piece;

[0014] An elastic element is fixedly installed on the top of the mounting housing, and the bottom of the elastic element is pressed and adhered to the detection element.

[0015] Preferably, the clamping assembly further includes:

[0016] A connecting plate, the outer wall of which is slidably sleeved with the mounting housing;

[0017] A positioning plate, which is fixedly connected to the end of the connecting plate;

[0018] A limiting frame is fixedly connected to the inner wall of the conductive vessel, and the bottom of the outer wall of the positioning plate is slidably engaged with the limiting frame.

[0019] Preferably, the clamping assembly further includes:

[0020] A connecting frame is slidably sleeved on the outside of the mounting housing, and the clamping member is fixedly connected to the bottom of the connecting frame;

[0021] A plug-in plate is mounted on a connecting frame. A sliding hole is provided on the mounting housing. The outer wall of the plug-in plate is slidably sleeved with the inner cavity of the sliding hole.

[0022] Preferably, the clamping assembly further includes:

[0023] Mounting holes are provided on the connecting plate, and the plug-in plate is located inside the mounting holes;

[0024] A limiting spring is provided inside the mounting hole, and one end of the limiting spring is pressed and fitted against the plug plate.

[0025] Preferably, the clamping assembly further includes:

[0026] A fixing rod is fixedly connected to the inside of the mounting hole, and a limiting spring is slidably sleeved on the outside of the fixing rod. The bottom of the plug plate has a slot that matches the fixing rod.

[0027] A limiting block is fixedly connected to the outside of a fixed rod, and the other end of a limiting spring is pressed and fitted against the limiting block.

[0028] The positioning block is fixedly installed at the end of the mounting housing, and the positioning block is slidably sleeved inside the mounting hole. The outer wall of the fixing rod is slidably inserted and sleeved with the positioning block.

[0029] The technical effects and advantages of this utility model are as follows:

[0030] This invention utilizes a conductive container, a clamping assembly, and a power module in combination. The conductive container contains an electroplating solution. When energized, the Ni electrode corresponding to the short-circuit layer of the detection piece undergoes a continuous displacement reaction, and the Ni electrode is continuously dissolved, resulting in a color difference between this layer and other locations. This allows for rapid identification of the short-circuit layer location, thereby improving the efficiency of identifying defective MLCC products. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the conductive vessel of this utility model on the side.

[0033] Figure 3 This is a schematic diagram of the internal structure of the side of the mounting housing portion of this utility model.

[0034] In the diagram: 1. Base plate; 2. Conductive container; 3. Clamping assembly; 31. Mounting housing; 32. Clamping element; 33. Elastic element; 34. Connecting plate; 35. Positioning plate; 36. Limiting frame; 37. Connecting frame; 38. Plug-in plate; 39. Sliding hole; 310. Mounting hole; 311. Limiting spring; 312. Limiting block; 313. Positioning block; 314. Fixing rod; 4. Detection element; 5. Power module. Detailed Implementation

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

[0036] This utility model provides, for example Figure 1-3 The image shows an auxiliary device for IR defect analysis of MLCCs.

[0037] Example 1: Includes a base plate 1, a conductive container 2, a clamping assembly 3, a detection element 4, and a power module 5. The conductive container 2 is fixedly installed on the top of the base plate 1 and is used to store the electrolyte solution. The clamping assembly 3 is disposed on the conductive container 2. The detection element 4 is disposed inside the conductive container 2 through the clamping assembly 3. The detection element 4 is formed by grinding one end of a short-circuited MLCC product until the entire inner electrode on one side is exposed. The power module 5 is installed on the top of the base plate 1 and is used to provide power for the electroplating of the detection element 4. Thus, under the action of the clamping assembly 3, the end of the detection element 4 with the exposed electrode is inserted into the electrolyte solution, and the power module... The negative electrode of block 5 is connected to the conductive vessel 2 via a wire, allowing the electrolyte solution inside the conductive vessel 2 to pass through the negative electrode power supply. The positive electrode of power module 5 is connected to the end of the detection element 4 where the electrode is not exposed via a wire and clamping assembly 3, thereby providing positive electrode power to the detection element 4. This causes a displacement reaction to occur in the short-circuited electrode layer of the detection element 4, that is, the Ni electrode corresponding to the short-circuited layer undergoes a continuous displacement reaction, and the Ni electrode is continuously dissolved, resulting in a color difference between this layer and other locations, thus determining the location of the short-circuited layer. The detection element 4 is then ground according to the usual DPA analysis method until the short-circuited location is exposed, and its short-circuited layer is analyzed.

[0038] Example 2: Based on Example 1, the clamping assembly 3 includes a mounting housing 31, a clamping member 32, and an elastic member 33. The mounting housing 31 is disposed on the conductive container 2. The clamping member 32 is symmetrically disposed at the bottom of the mounting housing 31 and clamps the top of the outer wall of the detection member 4, thereby suspending the detection member 4 vertically. The electrolyte inside the conductive container 2 submerges the exposed electrode at the end of the detection member 4. The elastic member 33 is fixedly installed on the top of the mounting housing 31. The bottom of the elastic member 33 is pressed and adhered to the detection member 4. The elastic member 33 is connected to the positive power supply of the power module 5 through a wire. The power supply provided by the power module 5 is within a safe value to avoid a power leakage safety accident.

[0039] Furthermore, the clamping assembly 3 also includes a connecting plate 34, a positioning plate 35, and a limiting frame 36. The outer wall of the connecting plate 34 is slidably sleeved with the mounting housing 31. The positioning plate 35 is fixedly connected to the end of the connecting plate 34. The limiting frame 36 is fixedly connected to the inner wall of the conductive container 2. The bottom of the outer wall of the positioning plate 35 is slidably engaged with the limiting frame 36. The positioning plate 35 is engaged inside the limiting frame 36, so that the mounting housing 31 can be stably installed on the conductive container 2.

[0040] Furthermore, the clamping assembly 3 also includes a connecting frame 37, a plug-in plate 38, a mounting hole 310, and a limiting spring 311. The connecting frame 37 is slidably sleeved on the outside of the mounting housing 31. The clamping member 32 is fixedly connected to the bottom of the connecting frame 37. The plug-in plate 38 is installed on the connecting frame 37, that is, the connecting frame 37 has a hole for the plug-in plate 38. The top of the plug-in plate 38 is fixedly connected to the connecting frame 37 by bolts and plates. The mounting housing 31 has a sliding hole 39. The outer wall of the plug-in plate 38 is slidably sleeved with the inner cavity of the sliding hole 39. The mounting hole 310 is opened on the connecting plate 34. The plug-in plate 38 is located inside the mounting hole 310. The limiting spring 311 is set inside the mounting hole 310. One end of the limiting spring 311 is pressed and fitted against the plug-in plate 38. The limiting spring 311 can give the connecting frame 37 an elastic compressive force through the plug-in plate 38, thereby causing the connecting frame 37 to drive the clamping member 32 to clamp the detection piece 4.

[0041] Furthermore, the clamping assembly 3 also includes a fixing rod 314, a limiting block 312, and a positioning block 313. The fixing rod 314 is fixedly connected to the inside of the mounting hole 310, and the limiting spring 311 is slidably sleeved on the outside of the fixing rod 314. The bottom of the plug-in plate 38 has a slot that matches the fixing rod 314. The limiting block 312 is fixedly connected to the outside of the fixing rod 314, and the other end of the limiting spring 311 is pressed against the limiting block 312. The limiting spring 311 can also provide an elastic compressive force to the connecting plate 34 through the limiting block 312 and the fixing rod 314, thereby not only improving the positioning plate The stability of the 35 clipped into the limiting frame 36 also allows the clamping member 32 to stably clamp the detection member 4, and pulls the two connecting plates 34 to move in opposite directions. The connecting plate 34 can also drive the connecting frame 37 and the clamping member 32 to separate from the detection member 4 through the plug-in plate 38, thereby removing the detection member 4. The positioning block 313 is fixedly installed at the end of the mounting housing 31. The positioning block 313 is slidably sleeved inside the mounting hole 310. The outer wall of the fixing rod 314 is slidably inserted and sleeved with the positioning block 313. The positioning block 313 can limit the connection plate 34 and prevent the connection plate 34 from being directly separated from the mounting housing 31.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for IR defect analysis of MLCCs, characterized in that, include: Base plate (1); Conductive container (2), which is fixedly installed on the top of the base plate (1), is used to store the electrolytic solution; A clamping assembly (3) is disposed on a conductive vessel (2); The detection element (4) is disposed inside the conductive vessel (2) by means of the clamping assembly (3); Power module (5), which is installed on the top of the base plate (1), is used to provide power for electroplating the test piece (4).

2. The IR defect analysis auxiliary device for MLCCs according to claim 1, characterized in that, The clamping assembly (3) includes: Mounting housing (31), which is disposed on conductive vessel (2); Clamping member (32), the clamping member (32) is symmetrically arranged at the bottom of the mounting housing (31), and the clamping member (32) is clamped to the top of the outer wall of the detection member (4); The elastic element (33) is fixedly installed on the top of the mounting housing (31), and the bottom of the elastic element (33) is pressed and adhered to the detection element (4).

3. The IR defect analysis auxiliary device for MLCCs according to claim 2, characterized in that, The clamping assembly (3) further includes: A connecting plate (34) is provided, the outer wall of which is slidably sleeved with the mounting housing (31); Positioning plate (35), which is fixedly connected to the end of connecting plate (34); The limiting frame (36) is fixedly connected to the inner wall of the conductive vessel (2), and the bottom of the outer wall of the positioning plate (35) is slidably engaged with the limiting frame (36).

4. The IR defect analysis auxiliary device for MLCCs according to claim 3, characterized in that, The clamping assembly (3) further includes: A connecting frame (37) is slidably sleeved on the outside of the mounting housing (31), and the clamping member (32) is fixedly connected to the bottom of the connecting frame (37); A plug-in plate (38) is installed on a connecting frame (37). A sliding hole (39) is provided on the mounting housing (31). The outer wall of the plug-in plate (38) is slidably sleeved with the inner cavity of the sliding hole (39).

5. The IR defect analysis auxiliary device for MLCCs according to claim 4, characterized in that, The clamping assembly (3) further includes: Mounting hole (310) is provided on connecting plate (34), and plug plate (38) is located inside mounting hole (310); A limiting spring (311) is disposed inside the mounting hole (310), and one end of the limiting spring (311) is pressed against the plug plate (38).

6. The IR defect analysis auxiliary device for MLCCs according to claim 5, characterized in that, The clamping assembly (3) further includes: The fixing rod (314) is fixedly connected to the inside of the mounting hole (310), the limiting spring (311) is slidably sleeved on the outside of the fixing rod (314), and the bottom of the plug plate (38) is provided with a slot that matches the fixing rod (314). The limiting block (312) is fixedly connected to the outside of the fixing rod (314), and the other end of the limiting spring (311) is pressed and adhered to the limiting block (312); The positioning block (313) is fixedly installed at the end of the mounting housing (31). The positioning block (313) is slidably sleeved inside the mounting hole (310). The outer wall of the fixing rod (314) is slidably inserted into the positioning block (313).

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