Ceramic capacitor testing system device with safety protection structure

Abstract

The utility model discloses a ceramic capacitor test system equipment with safety protection structure relates to capacitor test technical field. The utility model discloses a bottom plate, and the bottom plate top end is installed with a plurality of main support pole, and the top of each main support pole is fixedly connected with the top plate, and the top plate top end is installed with the gas -liquid pressure intensifier, and the output of gas -liquid pressure intensifier is installed with upper pressure module, and the detection spare is installed at the bottom of upper pressure module, and the bottom plate top end is installed with lower positioning module, and the both sides of lower positioning module are installed with the limit stop, and the top of limit stop is installed with pressure sensor, and one side of top plate top is installed with pressure measuring spare, and the bottom of lower positioning module is installed with the ventilation positioning subassembly, and the top of ventilation positioning subassembly is installed with the electric capacity spare. The utility model discloses through the flexible contact to the electric capacity spare bottom surface and top, avoids the rigid collision damage of electric capacity spare when detecting, and balances the support surface of electric capacity spare and detection spare, to improve the docking accuracy when detecting.

Description

Technical Field

[0001] This utility model belongs to the field of capacitance testing technology, specifically relating to a ceramic capacitor testing system with a safety protection structure. Background Technology

[0002] In the semiconductor industry, capacitors such as those used in new energy vehicle inverters, millimeter-wave radar RF capacitors, or sensor signal conditioning capacitors need to be tested to maintain capacitor production yield, which requires the use of corresponding capacitor testing systems.

[0003] The patent specification with publication number CN216869882U discloses a ceramic capacitive pressure sensor core testing mechanism, including a conveyor line, a tooling assembly conveyed along the conveyor line, and a testing station set on the conveyor line; the tooling assembly includes a lower testing assembly; the top side of the lower testing assembly has multiple testing positions, and the testing station includes a support plate and a pressure plate; the support plate is used to lift the tooling assembly to provide testing pressure for the capacitor core; the bottom side of the pressure plate is equipped with an upper testing assembly; the upper testing assembly includes a probe assembly, and the probe assembly is in contact with the lead wire of the capacitor core. This type of testing mechanism uses a pressure plate to press down the upper testing component, which in turn seals the pores of the lower testing component and the support plate under the action of a sealing ring, preventing gas leakage and ensuring the accuracy of the pressure value at the test position. However, this technical solution has several drawbacks. First, when the upper testing component squeezes the capacitor, the pressure on the capacitor substrate is uncontrollable; excessive pressure can damage the capacitor substrate, while insufficient pressure cannot effectively measure the test data. Second, the capacitor needs to be in a stable state before testing to prevent the capacitor pins from being tilted and making contact with the probe in an incorrect testing position, leading to inaccurate test data. The device seals the pores at the support plate by pressing down on the capacitor using the upper testing component, including the probe. Simultaneously, the probe, which is already connected to the capacitor pins, needs to measure the data. However, as a protruding structure, the probe's pressure on the capacitor can cause uneven force distribution and horizontal displacement. Probe testing under these conditions can lead to inaccurate contact positions between the capacitor pins and the probe, resulting in inaccurate test data.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a ceramic capacitor testing system with a safety protection structure. The technical problem to be solved is as follows: When the existing ceramic capacitor testing system detects the pins of the capacitor, the downward pressure is uncontrollable, and there is an inaccurate alignment between the probe and the capacitor pins during the test.

[0006] The objective of this utility model can be achieved through the following technical solutions: A ceramic capacitor testing system with a safety protection structure includes a base plate, a plurality of main support rods mounted on the top of the base plate, a top plate fixedly connected to the top of each main support rod, a gas-liquid booster cylinder mounted on the top of the top plate, an upper pressure module mounted on the output end of the gas-liquid booster cylinder, a detection element mounted on the bottom of the upper pressure module, a lower positioning module mounted on the top of the base plate, limit blocks mounted on both sides of the lower positioning module, pressure sensors mounted on the top of the limit blocks, a pressure measuring element mounted on one side of the top of the top of the top plate, a ventilated positioning component mounted on the bottom of the lower positioning module, a capacitor element mounted on the top of the ventilated positioning component, and when the detection element contacts the capacitor element, the top of the pressure sensor is in contact with the bottom surface of the upper pressure module.

[0007] As a further embodiment of this utility model: the lower positioning module further includes a lower plate fixedly connected to the top of the base plate, a support plate fixedly connected to the top of the lower plate, a plurality of lifting guide columns evenly installed on the periphery of the support plate, the limiting block installed on both sides of the top of the support plate, and the top height of the pressure sensor being higher than the top height of the limiting block.

[0008] As a further embodiment of this utility model: the upper pressure module includes an upper plate that is slidably connected between the bottoms of each of the lifting guide columns, a connecting plate that is fixedly connected to the top of the upper plate, and limit strips that are fixedly connected to both sides of the middle part of the top of the connecting plate. A floating joint is snapped between the two limit strips, and the top of the floating joint is fixedly connected to the output end of the gas-liquid booster cylinder.

[0009] As a further embodiment of this utility model: the pressure measuring component includes a pressure gauge, a buzzer is installed on one side of the pressure gauge, and the pressure gauge is electrically connected to both pressure sensors.

[0010] As a further embodiment of this utility model: the ventilation positioning component includes a support base fixedly connected to the top of the lower positioning module, the top center of the support base is provided with an air intake cavity, the bottom of the air intake cavity penetrates one side of the support base and is equipped with an air intake connector, the top of the air intake cavity is provided with a placement groove, a sealing ring is installed in the placement groove along the circumferential direction, and the detection component is placed on the top of the sealing ring.

[0011] As a further embodiment of this utility model: the capacitor includes a ceramic substrate placed on the top of the sealing ring, a capacitor body is mounted on the top of the ceramic substrate, and pins are mounted on the top of the capacitor body.

[0012] As a further embodiment of this utility model: the detection component includes a probe holder installed on the bottom surface of the upper pressure module, a spring probe is installed at the bottom of the probe holder, a pressure block is installed at the bottom of the probe holder, and the spring probe passes through the pressure block and is located directly above the pin.

[0013] The beneficial effects of this utility model are: 1. By installing the ventilation positioning component on the top of the lower positioning module, placing the capacitor on the top of the sealing ring, setting the probe of the detection component as a spring probe, and installing limit blocks with pressure sensors on both sides of the lower positioning module, and installing a pressure measuring component electrically connected to the pressure sensor on the top of the top plate, when the detection component detects the capacitor, the bottom of the ceramic substrate of the capacitor is in flexible contact with the sealing ring, and the contact between the pin at the top of the capacitor and the spring probe is also flexible. Furthermore, through the connection between the pressure measuring component and the pressure sensor, the pressure during detection is visible, and the downward pressure can be warned by a buzzer for overpressure. Combined with the limitation of the downward pressure position by the limit block, damage to the capacitor due to overpressure is avoided. That is, by avoiding rigid contact and avoiding overpressure, the probability of damage to the capacitor during detection is reduced, and the protection function of the capacitor under test is realized. 2. By setting a placement groove with a sealing ring at the top of the ventilation positioning component, the capacitor is placed at the top of the placement groove. The pressure module for shifting the detection component is connected to the gas-liquid booster cylinder equipped with a floating joint. At the same time, the movement of the pressure module is limited by the lifting guide column. Therefore, when the detection component moves vertically, it is not affected by the vibration of the gas-liquid booster cylinder during operation. Before docking with the capacitor, the capacitor is pre-maintained by negative pressure attraction to maintain the stress balance and uniform force on the bottom surface of the ceramic substrate. Therefore, when the detection component tests the capacitor, the supporting surfaces of both the detection component and the capacitor are in a horizontal and stable state. Its technical advantage is that it can effectively avoid the problem of the detection component and the capacitor being shifted or placed at an angle when they come into contact, thereby improving the docking accuracy of the probe and pin, and thus improving the accuracy of the test data. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 Enlarged detail view of point A in the middle; Figure 3 This is a partial cross-sectional view of the ventilation positioning carrier of this utility model; Figure 4 This is a utility model Figure 3 A magnified view of the details at point B in the middle.

[0016] In the diagram: 1. Base plate; 2. Main support rod; 3. Top plate; 4. Gas-liquid booster cylinder; 5. Upper pressure module; 51. Upper plate; 52. Connecting plate; 53. Limiting strip; 54. Floating joint; 6. Detection component; 61. Probe seat; 62. Spring probe; 63. Pressure block; 7. Lower positioning module; 71. Limiting block; 72. Pressure sensor; 73. Lower plate; 74. Support plate; 75. Lifting guide column; 8. Pressure measuring component; 81. Pressure gauge; 82. Buzzer; 9. Ventilation positioning assembly; 91. Support seat; 92. Suction cavity; 93. Suction joint; 94. Placement slot; 95. Sealing ring; 10. Capacitor component; 101. Ceramic substrate; 102. Capacitor body; 103. Pin. Detailed Implementation

[0017] 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 scope of protection of the present utility model.

[0018] like Figures 1 to 4 As shown, a ceramic capacitor testing system with a safety protection structure includes a base plate 1. Four main support rods 2 are evenly installed on the top of the base plate 1 along its circumferential side. A top plate 3 is fixedly connected between the tops of the main support rods 2. A gas-liquid booster cylinder 4 is installed in the middle of the top of the top of the top plate 3. An upper pressure module 5 is installed through the output end of the gas-liquid booster cylinder 4 through the top plate 3. A detection element 6 is installed at the bottom of the upper pressure module 5. A lower positioning module 7 is installed in the middle of the top of the base plate 1. Limiting blocks 71 are symmetrically arranged on both sides of the lower positioning module 7. A pressure sensor 72 is installed at the top of the limiting block 71. A pressure measuring element 8 is installed at the top of the top of the top plate 3. A ventilated positioning component 9 is installed at the bottom of the lower positioning module 7. A capacitor 10 is installed at the top of the ventilated positioning component 9. The capacitor 10 is horizontal, and when the detection element 6 contacts the capacitor 10, the top of the pressure sensor 72 is in contact with the bottom surface of the upper pressure module 5. It should be noted that the output end of the gas-liquid booster cylinder 4 extends through the top plate 3 to the top of the upper pressure module 5 and connects to it. That is, the vertical height of the upper pressure module 5 is controlled by the extension and retraction of the telescopic rod of the gas-liquid booster cylinder 4, and the height of the pressure measuring element 8 installed on the bottom surface of the upper pressure module 5 is controlled simultaneously; the capacitor 10 (see...) Figure 4The device includes a ceramic substrate 101 made of ceramic sheet, a capacitor body 102 mounted on the top of the ceramic substrate 101, and pins 103 mounted on the top of the capacitor body 102. During actual testing, the detection element 6 is connected to an external testing instrument. The test signal is transmitted from the testing instrument to the detection element 6. The probe of the detection element 6 docks with the capacitor pins 103 and flows into the electrode of the ceramic substrate 101, and finally into the internal circuit of the capacitor body 102. Then it returns along the path to complete the test. Specifically, during the test, the detection element 6 detects the capacitance and conductance between the source and drain of the capacitor body 102 when it is energized, thereby judging the stability of the capacitor 10 during opening and closing and its insulation, and thus judging its service life and whether it is a qualified product.

[0019] like Figure 1 As shown, the lower positioning module 7 also includes a lower plate 73 fixedly connected to the top of the base plate 1. The top of the lower plate 73 is fixedly connected to the support plate 74. Four lifting guide columns 75 are evenly installed on the periphery of the support plate 74. The limiting block 71 is installed on both sides of the top of the support plate 74. The top of the pressure sensor 72 is higher than the top of the limiting block 71. The top of the pressure sensor 72 is a pressure measuring plate that can be vertically extended and retracted. Its height is related to the pressure state. The upper pressure module 5 includes an upper plate 51 that is slidably connected between the bottoms of each lifting guide column 75. A connecting plate 52 is fixedly connected to the top of the upper plate 51. Limiting strips 53 are fixedly connected to both sides of the middle of the top of the connecting plate 52. A floating joint 54 is snapped between the two limiting strips 53. The top of the floating joint 54 is fixedly connected to the output end of the gas-liquid booster cylinder 4. It should be noted that when the gas-hydraulic booster cylinder 4 extends and retracts its telescopic rod, it drives the floating joint 54, which is locked between the two limit bars 53, to move. In turn, it drives the connecting plate 52 and the upper plate 51 to move along the lifting guide column 75. Since the floating joint 54 is used as a soft connection, the upper pressure module 5 is not affected by the vibration of the gas-hydraulic booster cylinder 4 during vertical movement. The purpose is to maintain the movement stability of the upper pressure module 5, thereby maintaining the movement stability of the detection component 6 installed at the bottom of the upper pressure module 5, thus avoiding the displacement of the detection alignment of the capacitor component 10 during detection and improving the positioning accuracy. Furthermore, the pressure measuring component 8 includes a pressure gauge 81 with a display screen. A buzzer 82 is installed on one side of the pressure gauge 81. The pressure gauge 81 is electrically connected to two pressure sensors 72. When the detection component 6 is moved by the gas-liquid booster cylinder 4 and comes into contact with the capacitor component 10 for detection, the pressure measuring plate of the pressure sensor 72 installed on the limit block 71 (see...) Figure 2 The pressure value of the capacitor 10 is simultaneously pressed by the upper plate 51 and displayed on the display screen of the pressure gauge 81. If the pressure value exceeds the detection pressure tolerance range, the buzzer 82 will sound an alarm, thereby realizing the early warning function of the downward pressure detection, avoiding damage to the capacitor 10 and improving the protection of the capacitor 10.

[0020] like Figure 1 , Figure 3 and Figure 4 As shown, the ventilation positioning component 9 includes a support base 91 fixedly connected to the top of the lower positioning module 7. An air intake cavity 92 is provided at the top center of the support base 91. The bottom of the air intake cavity 92 passes through one side of the support base 91 and is equipped with an air intake connector 93. A placement groove 94 is provided at the top of the air intake cavity 92. A sealing ring 95 is installed in the circumferential direction in the placement groove 94. The detection component 6 is placed on the top of the sealing ring 95. The top of the sealing ring 95 is in contact with the ceramic substrate 101. The testing component 6 includes a probe holder 61 fixedly connected to the pressure module 5. A spring probe 62 is installed at the bottom of the probe holder 61, and a pressure block 63 is installed at the bottom of the probe holder 61. The spring probe 62 passes through the pressure block 63 and is located directly above the pin 103. It should be noted that when testing the capacitance and conductivity of the capacitor body 102 of the capacitor component 10, the capacitor component 10 is first placed inside the placement slot 94 at the top of the ventilation positioning component 9. Then, a vacuum pump is connected to the suction connector 93, and the suction cavity 92 connected to the suction connector 93 is in a vacuum state. The negative pressure causes the ceramic substrate 101 of the capacitor component 10 to squeeze the sealing ring 95. Based on fixing the ceramic substrate 101, the ceramic substrate 101 is kept in a horizontal state, and the suction force makes the stress on its surface uniform. Its state is suitable for testing. Then, the gas-liquid booster cylinder 4 is activated to push the spring probe 62 of the detection component 6 to connect with the pin 103 of the capacitor component 10 for electrical testing. Because the detection component 6 is affected by the floating connector 54 and the lifting guide column 75 when moving vertically, it can keep the spring probe 62 and the pin 103 in a position and the support surface in a horizontal and stable state when they are docked, avoiding docking offset and oblique docking problems, thereby improving the accuracy of the test results.

[0021] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A ceramic capacitor testing system with a safety protection structure, comprising a base plate (1), wherein a plurality of main support rods (2) are mounted on the top of the base plate (1), a top plate (3) is fixedly connected between the tops of each of the main support rods (2), and a gas-liquid booster cylinder (4) is mounted on the top of the top plate (3), characterized in that, The output end of the gas-liquid booster cylinder (4) is equipped with an upper pressure module (5), the bottom of the upper pressure module (5) is equipped with a detection element (6), the top of the bottom plate (1) is equipped with a lower positioning module (7), the lower positioning module (7) is equipped with limit blocks (71) on both sides, the top of the limit block (71) is equipped with a pressure sensor (72), the top of the top plate (3) is equipped with a pressure measuring element (8), the bottom of the lower positioning module (7) is equipped with a ventilation positioning component (9), the top of the ventilation positioning component (9) is equipped with a capacitor (10), when the detection element (6) contacts the capacitor (10), the top of the pressure sensor (72) is in contact with the bottom surface of the upper pressure module (5).

2. The ceramic capacitor testing system equipment with a safety protection structure according to claim 1, characterized in that, The lower positioning module (7) also includes a lower plate (73) fixedly connected to the top of the base plate (1). A support plate (74) is fixedly connected to the top of the lower plate (73). Multiple lifting guide columns (75) are evenly installed on the periphery of the support plate (74). The limiting block (71) is installed on both sides of the top of the support plate (74). The top height of the pressure sensor (72) is higher than the top height of the limiting block (71).

3. The ceramic capacitor testing system equipment with a safety protection structure according to claim 2, characterized in that, The upper pressure module (5) includes an upper plate (51) that is slidably connected between the bottoms of each of the lifting guide columns (75). A connecting plate (52) is fixedly connected to the top of the upper plate (51). Limiting strips (53) are fixedly connected to both sides of the middle part of the top of the connecting plate (52). A floating joint (54) is snapped between the two limiting strips (53). The top of the floating joint (54) is fixedly connected to the output end of the gas-liquid booster cylinder (4).

4. The ceramic capacitor testing system equipment with a safety protection structure according to claim 1, characterized in that, The pressure measuring device (8) includes a pressure gauge (81), a buzzer (82) is installed on one side of the pressure gauge (81), and the pressure gauge (81) is electrically connected to the two pressure sensors (72).

5. The ceramic capacitor testing system equipment with a safety protection structure according to claim 1, characterized in that, The ventilation positioning component (9) includes a support base (91) fixedly connected to the top of the lower positioning module (7). The support base (91) has an air intake cavity (92) at the top center. The bottom of the air intake cavity (92) extends through one side of the support base (91) and is equipped with an air intake connector (93). The top of the air intake cavity (92) is provided with a placement groove (94). A sealing ring (95) is installed in the placement groove (94) along the circumferential direction. The detection component (6) is placed on the top of the sealing ring (95).

6. The ceramic capacitor testing system equipment with a safety protection structure according to claim 5, characterized in that, The capacitor (10) includes a ceramic substrate (101) placed on the top of the sealing ring (95), a capacitor body (102) is mounted on the top of the ceramic substrate (101), and pins (103) are mounted on the top of the capacitor body (102).

7. The ceramic capacitor testing system equipment with a safety protection structure according to claim 6, characterized in that, The detection component (6) includes a probe holder (61) installed on the bottom surface of the upper pressure module (5), a spring probe (62) is installed at the bottom of the probe holder (61), a pressure block (63) is installed at the bottom of the probe holder (61), the spring probe (62) passes through the pressure block (63) and is located directly above the pin (103).

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