Device for detecting layer-by-layer insulation resistance of multi-specification ceramic capacitors

Abstract

A layer-by-layer insulation resistance detection device for multi-specification ceramic capacitors comprises a base, a mounting mechanism, a testing mechanism and a moving mechanism, the mounting mechanism is arranged on the base and used for mounting and fixing a to-be-tested ceramic capacitor, and the testing mechanism is arranged on the base. Comprising a mounting seat arranged on the base, a plurality of mounting grooves which are arranged on the mounting seat at intervals and are used for mounting ceramic capacitors to be detected, and a fixing piece which is arranged on the mounting seat and is used for fixing the ceramic capacitors to be detected; the testing mechanism is used for detecting the insulation resistance of the to-be-tested ceramic capacitor on the mounting seat and comprises a testing plate which is arranged on the mounting seat and can be in contact with an end electrode of the to-be-tested ceramic capacitor, a moving rod which is movably arranged above the mounting seat and a testing needle which is obliquely arranged on the moving rod and can be in contact with an exposed electrode of the to-be-tested ceramic capacitor; the moving mechanism is arranged on the base, connected with the moving rod and drives the moving rod to move; the detection device provided by the utility model is simple in overall structure, can be matched with the mounting grooves of corresponding specifications according to different product requirements of a test, and realizes rapid and reliable production.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing the insulation resistance of ceramic capacitors, and particularly relates to a detection device for the layer-by-layer insulation resistance of multi-specification ceramic capacitors. Background Technique

[0002] Chip ceramic capacitors have the advantages of small volume, stable electrical performance, high reliability, small influence of electrical parameters on environmental changes, and excellent performance at high frequencies. They can meet the requirements of microwave and millimeter-wave band electronic circuits and are used for functions such as DC blocking, bypassing, coupling, tuning, impedance matching, and coplanar waveguide in microwave integrated circuits (MIC). They are mainly used in fields such as carrier rockets, satellites, missiles, Shenzhou spacecraft, regional electronic countermeasures, power amplifiers, transmitters, T / R modules, radars, and electronic communications. During the identification inspection and quality consistency inspection of chip ceramic capacitors, it is necessary to test the high-temperature insulation resistance of the products. It is necessary to polish one side of the ceramic capacitor, expose the inner electrode at the polished end, and then place the polished product at the target temperature to test its insulation resistance.

[0003] At present, the insulation resistance test of capacitors is usually carried out manually, that is, two test leads of an insulation resistance tester are respectively contacted with the two poles of the capacitor, and the reading of the insulation resistance tester is observed with the eyes. Wait for the specified time to arrive, judge whether it is qualified, and thus complete the test of one capacitor, and so on, repeating continuously. This test method takes a long time and has low work efficiency, and needs to be further improved. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a detection device for the layer-by-layer insulation resistance of multi-specification ceramic capacitors.

[0005] The utility model adopts the following technical scheme:

[0006] A detection device for the layer-by-layer insulation resistance of multi-specification ceramic capacitors includes a base, a mounting mechanism, a testing mechanism, and a moving mechanism.

[0007] The mounting mechanism is arranged on the base and is used for mounting and fixing the ceramic capacitor to be tested, and includes a mounting seat arranged on the base, a plurality of mounting grooves spaced on the mounting seat for mounting the ceramic capacitor to be tested, and a fixing member arranged on the mounting seat for fixing the ceramic capacitor to be detected.

[0008] The testing mechanism detects the insulation resistance of the ceramic capacitor to be tested on the mounting seat, and includes a test board arranged on the mounting seat and capable of contacting the end electrode of the ceramic capacitor to be tested, a moving rod movably arranged above the mounting seat, and a test needle inclined on the moving rod and capable of contacting the exposed electrode of the ceramic capacitor to be tested.

[0009] The moving mechanism is arranged on the base, and is connected to and drives the moving rod to move.

[0010] Furthermore, the mounting seat includes a mounting seat body arranged on the base and a mounting block arranged on the mounting seat body, the mounting groove extends inward from the side of the mounting block, the test board is arranged on the mounting seat body and is located at the bottom of the mounting block opposite to the multiple mounting grooves, and the end of the ceramic capacitor to be tested is arranged in the corresponding mounting groove, the end electrode is downwardly contacted with the test board, and the exposed electrode is upwardly contacted with the test needle.

[0011] Furthermore, the fixing member includes a fixing block that can move back and forth relative to the plurality of mounting slots and a push rod that is movably arranged on the mounting seat body and connected to the fixing block, and the fixing block and the mounting slot have opposite surfaces formed with a fixing portion that contacts the side of the capacitor to be measured.

[0012] Furthermore, a mounting step extending upward for mounting a test board is formed on the top surface of the mounting seat body, and a clearance groove adapted to the mounting step is formed at the lower end of the fixing portion.

[0013] Furthermore, the sizes of the multiple mounting grooves are different, and the top surface of the mounting block is formed with multiple step portions arranged in a step shape. The multiple mounting grooves correspond to the multiple step portions so that the exposed electrodes of the ceramic capacitor to be tested in the mounting grooves are located above the corresponding step portions.

[0014] Furthermore, the testing mechanism also includes a limiting member arranged on the moving rod for limiting the installation position of the test needle, the front end of the moving rod is provided with a mounting hole for installing the test needle, and the limiting member includes a limiting sleeve that can be moved back and forth on the moving rod, a limiting hole arranged at the bottom of the limiting sleeve and opposite to the mounting hole, a strip-shaped clearance hole arranged at the top of the limiting sleeve and opposite to the mounting hole, and a limiting spring with one end fixed on the moving rod and the other end connected to the limiting sleeve.

[0015] Furthermore, the moving mechanism is arranged on the side of the mounting seat, including a positioning seat arranged on the base, a first moving block arranged on the positioning seat and movable left and right, a second moving block arranged on the first moving block and movable forward and backward, a support arranged on the second moving block, a third moving block arranged on the support and movable up and down, a first adjusting member arranged between the positioning seat and the first moving block, a second adjusting member arranged between the first moving block and the second moving block, a third adjusting member arranged between the support and the third moving block, a first positioning member arranged between the positioning seat and the first moving block, a second positioning member arranged between the first moving block and the second moving block, and a third positioning member arranged between the support and the third moving block, and the moving rod is connected to the third moving block.

[0016] Further, the first adjusting member includes a first adjusting base disposed on the positioning base, a first adjusting block disposed on the first moving block opposite to the first adjusting base, and a micrometer screw disposed on the front end of the first adjusting base opposite to the first adjusting block.

[0017] Further, the first positioning member includes a first positioning piece disposed between the positioning base and the first moving block, a first positioning hole disposed on the first positioning piece opposite to the positioning base, a first strip-shaped moving hole disposed on the first positioning piece opposite to the first moving block, a first locking hole disposed on the first moving block opposite to the first strip-shaped moving hole, and a first locking bolt passing through the first strip-shaped moving hole and cooperating with the first locking hole. The extending direction of the first strip-shaped moving hole is the same as the moving direction of the first moving block.

[0018] Further, a connecting block connected to the moving rod is disposed on the opposite surface of the first moving block and the mounting base. The moving rod includes a main body section extending in the direction close to the mounting base and a connecting section vertically downward disposed on the main body section and connected to the connecting block.

[0019] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are as follows: The detection device defined in this application has a simple overall structure, can match the corresponding specifications of the installation grooves according to the different product requirements of the test experiment, standardize the test, realize fast and reliable production, and is convenient to operate and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present invention Figure 1 ;

[0021] Figure 2 is a schematic structural view of the present invention Figure 2 ;

[0022] Figure 3 is a schematic structural view of the installation mechanism;

[0023] Figure 4 is a schematic structural view of the moving mechanism Figure 1 ;

[0024] Figure 5 is a schematic structural view of the moving mechanism Figure 2 ;

[0025] In the figure, 1 - base, 2 - mounting mechanism, 3 - testing mechanism, 4 - moving mechanism, 21 - mounting seat, 211 - mounting seat body, 212 - mounting block, 213 - stepped portion, 214 - mounting step, 22 - mounting groove, 23 - fixing member, 231 - fixing block, 232 - push rod, 233 - fixing portion, 234 - relief groove, 31 - test plate, 32 - moving rod, 321 - mounting hole, 322 - main body section, 323 - connecting section, 33 - test pin, 34 - limiting member, 341 - limiting sleeve, 342 - strip-shaped relief hole, 343 - limiting spring, 41 - positioning seat, 42 - first moving block, 43 - second moving block, 44 - support, 45 - third moving block, 46 - first adjusting member 461 - first adjusting seat, 462 - first adjusting block, 463 - micrometer screw, 47 - second adjusting member, 48 - third adjusting member, 49 - first positioning member, 491 - first positioning piece, 492 - first positioning hole, 493 - first strip-shaped moving hole, 494 - first locking bolt, 40 - second positioning member, 401 - third positioning member, 402 - connecting block. Detailed implementation manner

[0026] The present utility model will be further described below through specific implementation manners.

[0027] A detection device for the layer-by-layer insulation resistance of multi-specification ceramic capacitors includes a base 1, a mounting mechanism 2, a testing mechanism 3, and a moving mechanism 4.

[0028] The mounting mechanism 2 is arranged on the base 1 and is used for mounting and fixing the ceramic capacitor to be tested. It includes a mounting seat 21 arranged on the base 1, a plurality of mounting grooves 22 spaced on the mounting seat 21 for mounting the ceramic capacitor to be tested, and a fixing member 23 arranged on the mounting seat 21 for fixing the ceramic capacitor to be detected. Specifically, the sizes of the plurality of mounting grooves 22 are different to adapt to ceramic capacitors of different specifications; further, the plurality of mounting grooves 22 are arranged in an increasing or decreasing order of size.

[0029] The mounting seat 21 includes a mounting seat body 211 arranged on the base 1 and a mounting block 212 arranged on the mounting seat body 211. Correspondingly, the mounting grooves 22 extend inwards from the side surface of the mounting block 212. Specifically, the top surface of the mounting block 212 is formed with a plurality of stepped portions 213 arranged in a stepped manner, and the plurality of mounting grooves 22 correspond to the plurality of stepped portions 213 so that the exposed electrodes of the ceramic capacitor to be tested in the mounting grooves 22 are located above the corresponding stepped portions 213, facilitating the detection of the ceramic capacitor to be tested.

[0030] The fixing member 23 includes a fixing block 231 that can move back and forth relative to the plurality of mounting grooves 22 and a push rod 232 that can be movably arranged on the mounting seat body 211 and connected to the fixing block 231. The fixing block 231 and the mounting groove 22 have opposite surfaces formed with a fixing portion 233 that contacts the side of the capacitor to be tested. When the insulation resistance of the ceramic capacitor to be tested is tested, it is placed in the mounting groove 22 of corresponding size, and then the fixing block 231 is moved in a direction close to the mounting block 212 by the push rod 232 so that the fixing portion 233 contacts the side of the ceramic capacitor to be tested to complete the fixation of the ceramic capacitor to be tested, so as to ensure the effective implementation of the insulation resistance test. Specifically, a spring can also be sleeved on the outer periphery of the push rod 232, so that its two ends are respectively connected to the fixing block 231 and the mounting seat body 211, so as to realize the automatic resetting and clamping of the push rod 232.

[0031] The testing mechanism 3 performs insulation resistance detection on the ceramic capacitor to be tested on the mounting seat 21, including a test board 31 arranged on the mounting seat 21 and capable of contacting the end electrode of the ceramic capacitor to be tested, a moving rod 32 movably arranged above the mounting seat 21, and a test needle 33 obliquely arranged on the moving rod 32 and capable of contacting the exposed electrode of the ceramic capacitor to be tested, and a limiter 34 arranged on the moving rod 32 for limiting the installation position of the test needle 33. Specifically, the test board 31 is arranged on the mounting seat body 211 and is located at the bottom of the mounting block 212 and is opposite to the multiple mounting grooves 22. When the ceramic capacitor to be tested is placed in the mounting groove 22, its end electrode contacts the test board 31 downward, and the exposed electrode contacts the test needle 33 upward. Correspondingly, a mounting step 214 extending upward for mounting the test board 31 is formed on the top surface of the mounting seat body 21, and a clearance groove 234 adapted to the mounting step 214 is formed at the lower end of the fixing portion 233; further, a mounting hole 321 for mounting the test needle 33 is provided at the front end of the moving rod 32.

[0032] The limiting member 34 includes a limiting sleeve 341 which can be moved back and forth on the moving rod 32, a limiting hole arranged at the bottom of the limiting sleeve 341 and opposite to the mounting hole 321, a strip-shaped clearance hole 342 arranged at the top of the limiting sleeve 341 and opposite to the mounting hole 321, and a limiting spring 343 with one end fixed on the moving rod 32 and the other end connected to the limiting sleeve 341; when the test pin 33 is installed, the limiting sleeve 341 is pushed inward to squeeze the limiting spring 343 so that the mounting hole 321 is opposite to the limiting hole, and then the test pin 33 is passed through the strip-shaped clearance hole 342, the mounting hole 321 and the limiting hole in turn. At this time, the limiting sleeve 341 is released. Under the action of the limiting spring 343, the limiting sleeve 341 is reset to make the mounting hole 321 and the limiting hole staggered, thereby clamping the test pin 33, so that the test pin 33 is arranged at an angle at the front end of the moving rod 32.

[0033] The moving mechanism 4 is arranged on the base 1 at the side of the mounting seat 21, connects and drives the moving rod 32 to move, and includes a positioning seat 41 arranged on the base 1, a first moving block 42 that can move left and right on the positioning seat 41, a second moving block 43 that can move back and forth on the first moving block 42, a support seat 44 arranged on the second moving block 43, a third moving block 45 that can move up and down on the support seat 44, a first adjusting member 46 arranged between the positioning seat 41 and the first moving block 42, a second adjusting member 47 arranged between the first moving block 42 and the second moving block 43, a third adjusting member 48 arranged between the support seat 44 and the third moving block 45, a first positioning member 49 arranged between the positioning seat 41 and the first moving block 42, a second positioning member 40 arranged between the first moving block 42 and the second moving block 43, and a third positioning member 401 arranged between the support seat 44 and the third moving block 45. Correspondingly, the moving rod 362 is connected to the third moving block 45. A connecting block 402 connected to the moving rod 32 is arranged on the opposite surface of the first moving block 45 and the mounting seat 21. The moving rod 32 includes a main body section 322 extending in the direction close to the mounting seat 21 and a connecting section 323 vertically downwardly arranged on the main body section 322 and connected to the connecting block 402.

[0034] The first adjusting member 46 includes a first adjusting seat 461 arranged on the positioning seat 41, a first adjusting block 462 arranged on the first moving block 42 opposite to the first adjusting seat 461, and a micrometer screw 463 arranged on the front end of the first adjusting seat 461 opposite to the first adjusting block 462. During the test, the moving distance of the first moving block 42 is precisely controlled by the micrometer screw 463 so that the test needle 33 can contact the exposed electrode of the ceramic capacitor to be tested. Specifically, the structures of the second adjusting member 47 and the third adjusting member 48 are the same as the structure of the first adjusting member 46, and the structures of the second adjusting member 47 and the third adjusting member 48 will not be further described here.

[0035] The first positioning member 49 includes a first positioning piece 491 disposed between the positioning seat 41 and the first moving block 42, a first positioning hole 492 disposed on the first positioning piece 491 opposite to the positioning seat 41, a first strip-shaped moving hole 493 disposed on the first positioning piece 491 opposite to the first moving block 42, a first locking hole disposed on the first moving block 42 opposite to the first strip-shaped moving hole 493, and a first locking bolt 494 passing through the first strip-shaped moving hole 493 and cooperating with the first locking hole. The first positioning piece 491 is fixed on the positioning seat 41 through a bolt cooperating with the first positioning hole 492. When the first moving block 42 moves, the first locking bolt 494 is rotated to loosen the clamping of the upper end of the first positioning piece 491 on the first moving block 42, and then the micrometer screw 463 is rotated to adjust the position of the first moving block 42. When the adjustment of the position of the first moving block 42 is completed, the first locking bolt 494 is rotated in the reverse direction to press the upper end of the first positioning piece 491 against the first moving block 42 to fix the moved first moving block 42. Specifically, the extending direction of the first strip-shaped moving hole 493 is the same as the moving direction of the first moving block 42. Further, the structures of the second positioning member 40 and the third positioning member 401 are the same as that of the first positioning member 49, and the structures of the second positioning member 40 and the third positioning member 401 will not be further described here.

[0036] When testing the ceramic capacitor to be measured, two wires of the insulation resistance tester are respectively connected to the test board 31 and the test needle 33, and then the ceramic capacitor to be measured is placed in the installation groove 22 with corresponding dimensions, and its end electrodes are in contact with the test board downward and the exposed electrodes face upward. Then, the position of the test needle 33 is adjusted by the moving mechanism 4 so that the lower end of the test needle 33 is in contact with the exposed electrode. Finally, the insulation resistance tester is turned on to test the ceramic capacitor in the installation groove 22. The overall operation is simple, without the need for the tester to operate for a long time, and can effectively ensure the stability of the test process and the accuracy of the test results.

[0037] The detection device defined in this application has a simple overall structure, can match the installation grooves with corresponding specifications according to different product requirements of the test experiment, standardize the test, achieve fast and reliable production, and is convenient to operate and has high safety.

[0038] The above is only the preferred embodiment of the present invention, and thus cannot limit the scope of implementation of the present invention. That is, the equivalent changes and modifications made according to the scope of the present invention application and the content of the specification should still fall within the scope covered by the present invention application.

Claims

1. A device for detecting the insulation resistance of ceramic capacitors of multiple specifications layer by layer, characterized by: Including base, installation mechanism, testing mechanism and moving mechanism, The mounting mechanism is arranged on the base and used to mount and fix the ceramic capacitor to be tested, including a mounting seat arranged on the base, a plurality of mounting grooves arranged at intervals on the mounting seat for mounting the ceramic capacitor to be tested, and a fixing member arranged on the mounting seat for fixing the ceramic capacitor to be tested; The testing mechanism performs insulation resistance detection on the ceramic capacitor to be tested on the mounting seat, comprising a testing plate arranged on the mounting seat and capable of contacting the terminal electrode of the ceramic capacitor to be tested, a moving rod movably arranged above the mounting seat, and a testing needle obliquely arranged on the moving rod and capable of contacting the exposed electrode of the ceramic capacitor to be tested; The moving mechanism is arranged on the base, and is connected to and drives the moving rod to move.

2. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 1 is characterized in that: The mounting seat includes a mounting seat body arranged on the base and a mounting block arranged on the mounting seat body, the mounting groove extends inward from the side of the mounting block, the test board is arranged on the mounting seat body and is located at the bottom of the mounting block opposite to the multiple mounting grooves, and the end of the ceramic capacitor to be tested is arranged in the corresponding mounting groove, the end electrode is downwardly contacted with the test board, and the exposed electrode is upwardly contacted with the test needle.

3. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 2 is characterized in that: The fixing member includes a fixing block that can move back and forth relative to the plurality of mounting slots and a push rod that is movably arranged on the mounting seat body and connected to the fixing block. The opposite surfaces of the fixing block and the mounting slot are formed with a fixing portion that contacts the side of the capacitor to be tested.

4. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 3 is characterized in that: The top surface of the mounting seat body is formed with an installation step extending upward for installing the test board, and the lower end of the fixing portion is formed with a clearance groove adapted to the installation step.

5. The device for detecting the insulation resistance of ceramic capacitors of multiple specifications layer by layer according to claim 2 is characterized in that: The sizes of the multiple installation grooves are different. The top surface of the installation block is formed with multiple step portions arranged in a step shape. The multiple installation grooves correspond to the multiple step portions so that the exposed electrodes of the ceramic capacitors to be tested in the installation grooves are located above the corresponding step portions.

6. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 1 is characterized in that: The testing mechanism also includes a limiting member arranged on the moving rod for limiting the installation position of the test needle, a mounting hole for installing the test needle is arranged at the front end of the moving rod, and the limiting member includes a limiting sleeve which can be moved back and forth on the moving rod, a limiting hole arranged at the bottom of the limiting sleeve and opposite to the mounting hole, a strip-shaped clearance hole arranged at the top of the limiting sleeve and opposite to the mounting hole, and a limiting spring with one end fixed on the moving rod and the other end connected to the limiting sleeve.

7. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 1 is characterized in that: The moving mechanism is arranged on the side of the mounting seat, including a positioning seat arranged on the base, a first moving block arranged on the positioning seat and movable left and right, a second moving block arranged on the first moving block and movable forward and backward, a support arranged on the second moving block, a third moving block arranged on the support and movable up and down, a first adjusting member arranged between the positioning seat and the first moving block, a second adjusting member arranged between the first moving block and the second moving block, a third adjusting member arranged between the support and the third moving block, a first positioning member arranged between the positioning seat and the first moving block, a second positioning member arranged between the first moving block and the second moving block, and a third positioning member arranged between the support and the third moving block, and the moving rod is connected to the third moving block.

8. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 7 is characterized in that: The first adjusting member comprises a first adjusting seat arranged on the positioning seat, a first adjusting block arranged on the first moving block opposite to the first adjusting seat, and a micrometer screw arranged on the first adjusting seat with its front end opposite to the first adjusting block.

9. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 7, characterized in that: The first positioning member includes a first positioning plate arranged between the positioning seat and the first moving block, a first positioning hole arranged on the first positioning plate opposite to the positioning seat, a first strip-shaped moving hole arranged on the first positioning plate opposite to the first moving block, a first locking hole arranged on the first moving block opposite to the first strip-shaped moving hole, and a first locking bolt passing through the first strip-shaped moving hole and cooperating with the first locking hole. The extension direction of the first strip-shaped moving hole is the same as the moving direction of the first moving block.

10. The device for detecting the layer-by-layer insulation resistance of ceramic capacitors of multiple specifications according to claim 7, characterized in that: A connecting block connected to the moving rod is arranged on the opposite surface of the first moving block and the mounting seat. The moving rod includes a main body section extending in a direction close to the mounting seat and a connecting section arranged vertically downward on the main body section and connected to the connecting block.

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