A multifunctional high-voltage testing device for multilayer capacitors

Abstract

This invention belongs to the technical field of high-voltage testing equipment and discloses a multifunctional high-voltage testing device for multilayer capacitors. It includes a base plate, a rotating platform movably connected to the top of the base plate, a discharge chute at the front end of the base plate, an air pump and a fixed box fixedly mounted on the bottom surface of the base plate, fan blades movably connected to the inner cavity of the fixed box, and a drive gear shaft movably connected to the front end of the base plate. This invention uses airflow entering the fixed box to drive the fan blades to rotate, which in turn drives the rotating platform. Combined with the contact between the conductive wheel and the multilayer capacitor, continuous and uninterrupted testing of the multilayer capacitor is performed. After testing, the multilayer capacitor is directly fed into the discharge chute. After discharge, a new multilayer capacitor is added to the right side of the rotating platform. This separates the loading, testing, and unloading processes, ensuring that loading and unloading do not interfere with the testing work. Continuous testing can be performed during loading and unloading, thereby increasing the device's efficiency.

Description

Technical Field

[0001] This invention belongs to the field of high voltage testing equipment technology, specifically a multifunctional high voltage testing device for multilayer capacitors. Background Technology

[0002] Multilayer capacitors have a significant advantage in size compared to traditional ceramic capacitors, allowing them to be used in more small and precision devices. After the multilayer capacitors are manufactured, they need to undergo high-voltage testing to determine whether they are qualified.

[0003] Existing high-voltage testing equipment connects two pins of a multilayer capacitor to a high-voltage circuit, which charges the capacitor with high voltage. The capacitor's qualification is determined by whether it can withstand high voltage. Most high-voltage testing equipment requires three steps for testing multilayer capacitors: loading, testing, and unloading. However, since the testing position is fixed, in actual use, the loading and unloading mechanisms must respectively place the multilayer capacitors into and remove them from the testing position before and after testing. Furthermore, the device cannot test the next set of multilayer capacitors while loading and unloading them, thus reducing the device's efficiency.

[0004] Existing high-voltage testing equipment is mostly placed indoors for testing. However, the actual operating environment of multilayer capacitors may be cold, and they may also be affected by the temperature emitted by other electronic components, causing the operating environment of multilayer capacitors to be in a high-temperature state. Multilayer capacitors tested directly indoors mostly cannot meet the requirements of simulating high or low temperature environments. As a result, multilayer capacitors that pass the test cannot be used in high or low temperature environments, thus reducing the accuracy of the device's testing.

[0005] Existing high-voltage testing equipment often only performs high-voltage testing to determine whether a capacitor passes the initial test. Most of these devices directly test multilayer capacitors. However, to avoid misjudgments, capacitors that fail the initial test are usually retested to filter out the qualified ones from those that failed the first test. But after the first test, some multilayer capacitors may still be internally charged, requiring a discharge operation during the second test. This increases the workload for operators. Furthermore, after prolonged testing, existing testing components may accumulate small amounts of capacitor debris on the connectors. This debris can cause poor contact when connecting the capacitors, reducing the accuracy of the testing equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a multifunctional high-voltage testing device for multilayer capacitors to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional high-voltage testing device for multilayer capacitors, comprising a base plate, a rotating platform movably connected above the base plate, a discharge chute at the front end of the base plate, an air pump and a fixed box fixedly installed on the bottom surface of the base plate, a fan blade movably connected to the inner cavity of the fixed box, a drive gear shaft movably connected to the front end of the base plate, a transmission assembly at the bottom end of the drive gear shaft, a driven gear ring fixedly installed on the side wall of the rotating platform, a fixed plate fixedly installed at the top end of the base plate, a rotating shaft movably connected to the bottom end of the fixed plate, a conductive assembly at the bottom end of the rotating shaft, a conductive rod fixedly installed on the bottom surface of the fixed plate, a controller fixedly installed at the left end of the base plate, a connecting wire harness electrically connected to the top end of the controller, and an air outlet pipe fixedly installed at the front end of the fixed box; The air pump is started, drawing outside air into the inner cavity of the fixed box. Once inside, the air drives the fan blades to rotate. This rotation, via the transmission assembly, drives the drive gear shaft. The meshing of the drive gear shaft with the driven gear ring causes the rotating platform to rotate clockwise. As the multilayer capacitor rotates clockwise and enters below the conductive wheel, its electrodes contact the bottom of the conductive wheel, allowing high-voltage current to be transferred to the multilayer capacitor for high-voltage testing. As the rotating platform continues to rotate, the tested multilayer capacitor is discharged clockwise into the discharge chute. During the conveying process to the discharge trough, defective multilayer capacitors can be removed. When the multilayer capacitor rotates to the top of the discharge trough, it enters the discharge pipe downwards under the action of gravity for discharge. As the rotating platform continues to rotate, there are no multilayer capacitors in the square slot on the right side of the rotating platform. New multilayer capacitors can be placed in the empty square slot for continuous testing. The continuous rotation of the rotating platform and the contact between the conductive wheel and the rotating platform can ensure that the conductive wheel always rotates. Since the conductive rod is in contact with the top of the conductive wheel, when the conductive wheel rotates to the bottom of the conductive rod, the conductive rod can clean the debris on the conductive wheel. Airflow enters the fixed box, driving the fan blades to rotate. As the fan blades rotate, they drive the rotating platform via a transmission assembly and a drive gear shaft. This, combined with the contact between the conductive wheel and the multilayer capacitor, continuously monitors the capacitor. After monitoring, the multilayer capacitor is directly fed into the discharge chute. New multilayer capacitors are added to the right side of the rotating platform after discharge, separating the loading, monitoring, and unloading processes. This ensures that loading and unloading do not interfere with the monitoring work, and continuous monitoring can be performed during loading and unloading, thus increasing the device's efficiency. The conductive rod, by contacting the top of the rotating conductive wheel, can scrape off any remaining debris from the wheel's tip.

[0008] Preferably, an air inlet pipe is fixedly installed at the front end of the air pump, an electromagnet is fixedly installed in the inner cavity of the air inlet pipe, a permanent magnet plate is movably connected to the inner cavity of the air inlet pipe, a heating jacket and a cooling jacket are fixedly installed on the upper and lower sides of the front end of the air inlet pipe respectively, a fixing pipe is fixedly installed on the top surface of the fixing plate, and a high-pressure nozzle is fixedly installed at the front end of the fixing pipe. Air rotating inside the fixed box enters the fixed tube through the air outlet pipe, then enters the high-pressure nozzle through the fixed tube, and is sprayed onto the multilayer capacitor through the bottom of the high-pressure nozzle. At this time, the heating jacket can be activated to heat the top of the air inlet pipe, so that the air drawn into the air pump has a certain temperature. The air sprayed from the high-pressure nozzle can then raise the temperature of the environment around the multilayer capacitor, thereby simulating use in a high-temperature environment. Alternatively, the cooling jacket can be activated to cool the bottom of the air inlet pipe. Similarly, the air entering the fixed box will then cool the environment around the multilayer capacitor through the high-pressure nozzle, thereby simulating use in a low-temperature environment. In addition, the gas sprayed from the high-pressure nozzle can blow away residual debris from above the multilayer capacitor to be tested. The airflow entering the fixed box drives the fan blades to rotate and is discharged from the outlet pipe. The airflow then enters the high-pressure nozzle through the outlet pipe and the fixed pipe, and flows towards the multilayer capacitor. By controlling the opening and closing of the heating or cooling jacket, the multilayer capacitor can be sprayed with airflow at higher and lower temperatures, thereby simulating the use of the multilayer capacitor at high or low temperatures and improving the accuracy of the device's detection. The airflow from the high-pressure nozzle can blow the residual debris scraped off by the conductive rod backward, avoiding interference from the detection and thus preventing poor contact, further improving the accuracy of the device's detection.

[0009] Preferably, a connecting strip is fixedly installed on the rear side of the fixing plate, and a discharge ring is movably sleeved at the bottom end of the connecting strip; Because the discharge ring is connected by a connecting strip on the back of the fixed plate, before the second inspection of the defective products in the first inspection, the defective multilayer capacitors first come into contact with the discharge ring as the rotating platform rotates. The discharge ring short-circuits the two ends of the multilayer capacitors to discharge them, so that the multilayer capacitors entering the conductive wheel are not charged. By setting a discharge ring on the front side of the fixed plate, the multilayer capacitor can be automatically discharged during secondary testing through contact between the discharge ring and the multilayer capacitor, thus giving the device a multi-functional effect.

[0010] Preferably, the transmission assembly includes a first transmission wheel, which is fixedly mounted on the bottom surface of the drive gear shaft. A transmission belt is driven to the surface of the first transmission wheel, and a second transmission wheel is driven to the rear end of the transmission belt. The second transmission wheel is fixedly mounted on the top end of the fan blade. The transmission belt connects transmission wheel one and transmission wheel two, so that the fan blades can drive the drive gear shaft to rotate when they rotate. The diameter of the second transmission wheel is three times larger than that of the first transmission wheel, thereby accelerating the rotation of the drive gear shaft, increasing the rotational speed of the rotating platform, and improving the working efficiency of the device.

[0011] Preferably, the conductive component includes a conductive wheel, which is movably connected to the surface of the rotating shaft. Both ends of the conductive wheel are provided with positioning rings, which are fitted to and fixedly installed on the surface of the rotating shaft.

[0012] Preferably, a fixed shaft is fixedly installed in the middle of the top surface of the rotating platform, a clamping plate is fixedly installed at the top of the fixed shaft, the right end of the fixed plate is movably connected to the middle of the clamping plate, a square groove is opened on the surface of the rotating platform, a discharge pipe is fixedly installed on the bottom surface of the base plate, and the projection of the discharge groove in the horizontal direction is located inside the discharge pipe. A multilayer capacitor is placed in a square hole on the rotating platform, and the multilayer capacitor is not placed in the square slot above the discharge slot. When the rotating platform rotates, the multilayer capacitor can be driven to enter and exit the discharge slot, and the fixed shaft will rotate when the rotating platform rotates. After the multilayer capacitors are fed into the inlet / outlet trough, they automatically move downwards to discharge, increasing the automation level of the device. At the same time, the clamping plate positions the right end of the fixed plate, thereby ensuring that the fixed plate is always in a horizontal state and ensuring the stability of the device operation.

[0013] Preferably, there are two electromagnets, which are located on the upper and lower sides of the front end of the air pump, respectively. The permanent magnet plate is movably connected inside the two electromagnet pairs and is magnetically connected to the two electromagnets. Powering the electromagnet below generates magnetism, causing the permanent magnet plate to move downwards and seal the bottom of the intake pipe. Similarly, powering the electromagnet above generates magnetism, causing the permanent magnet plate to move upwards and seal the top of the intake pipe. By moving the permanent magnet plate up or down, the temperature of the air entering the fixed box can be changed, thereby achieving automatic switching and improving the automation level of the device.

[0014] Preferably, the high-pressure nozzle is C-shaped, and the high-pressure nozzle is connected to the fixed box through a fixed pipe and an air outlet pipe; The "C"-shaped high-pressure nozzle can redirect the gas entering the nozzle, ensuring that the gas can clean up debris from front to back, avoiding debris interference with the detection and ensuring detection accuracy.

[0015] Preferably, the bottom end of the discharge ring contacts the top surface of the base plate, and the connecting strip is made of a hard rubber material; To prevent the discharge ring from diverting current into the connecting strip when discharging the multilayer capacitor, the current is prevented from flowing through the fixed plate, thus ensuring the safety of the device.

[0016] Preferably, the bottom surface of the conductive rod is in contact with the top surface of the conductive wheel, and the conductive rod is electrically connected to the controller via a connecting wire harness; When the controller is activated, it supplies power to the conductive rod via the connecting harness. Since the bottom end of the conductive rod is in contact with the top end of the conductive wheel, current is transmitted to the conductive wheel. The current generated by the controller powers the conductive wheel through the connecting wire harness and conductive rod. When the multilayer capacitor comes into contact with the conductive wheel, current can be passed through the multilayer capacitor, ensuring that the multilayer capacitor can be energized smoothly.

[0017] The beneficial effects of this invention are as follows: 1. This invention uses airflow to enter the fixed box and drive the fan blades to rotate. When the fan blades rotate, they drive the rotating platform to rotate through the transmission component and the drive gear shaft. In addition, the conductive wheel makes contact with the multilayer capacitor to continuously detect the multilayer capacitor. After detection, the multilayer capacitor is directly fed into the discharge chute. After discharge, a new multilayer capacitor is added to the right side of the rotating platform. This separates the loading, detection and unloading, so that loading and unloading do not interfere with the detection work. Detection can be carried out continuously during loading and unloading, thereby increasing the working efficiency of the device.

[0018] 2. In this invention, the airflow entering the fixed box drives the fan blades to rotate and is discharged from the air outlet pipe. The airflow enters the high-pressure nozzle through the air outlet pipe and the fixed pipe and flows towards the multilayer capacitor. By controlling the opening and closing of the heating jacket or cooling jacket, the multilayer capacitor can be sprayed with airflow at higher and lower temperatures, thereby simulating the use of the multilayer capacitor at high or low temperatures and improving the accuracy of the device's detection.

[0019] 3. This invention uses a conductive rod that fits against the top of a rotating conductive wheel to scrape off debris from the wheel's tip. The airflow from the high-pressure nozzle blows the debris scraped off by the conductive rod backward, preventing it from interfering with the detection and thus avoiding poor contact. This improves the accuracy of the device's detection. By setting a discharge ring on the front side of the fixed plate, the multilayer capacitor can be automatically discharged during secondary detection through contact between the discharge ring and the multilayer capacitor, giving the device a multi-functional effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 The structure of this invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the air pump connection of the present invention; Figure 4 This is a cross-sectional view of the fixing box of the present invention; Figure 5 This is a cross-sectional schematic diagram of the air intake pipe of the present invention; Figure 6 This is a schematic diagram of the exploded connection of the base plate of the structure of the present invention; Figure 7 This is a schematic diagram of the high-pressure nozzle connection of the present invention; Figure 8 This is a front view of the fixing plate of the present invention; Figure 9 This is a schematic diagram of the explosive connection of the discharge ring in the structure of the present invention.

[0021] In the diagram: 1. Base plate; 2. Rotating platform; 3. Discharge chute; 4. Air pump; 5. Fixing box; 6. Fan blade; 7. Drive gear shaft; 8. Transmission assembly; 801. Transmission wheel one; 802. Transmission belt; 803. Transmission wheel two; 9. Driven gear ring; 10. Fixing plate; 11. Rotating shaft; 12. Conductive assembly; 121. Conductive wheel; 122. Positioning ring; 13. Conductive rod; 14. Connecting wire harness; 15. Controller; 16. Air outlet pipe; 17. Fixing shaft; 18. Clamping plate; 19. Air inlet pipe; 20. Electromagnet; 21. Permanent magnet plate; 22. Heating jacket; 23. Cooling jacket; 24. Fixing pipe; 25. High-pressure nozzle; 26. Connecting strip; 27. Discharge ring. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1 to 9 As shown in the embodiment of the present invention, a multifunctional high-voltage testing device for multilayer capacitors includes a base plate 1, a rotating platform 2 movably connected to the top of the base plate 1, a discharge chute 3 at the front end of the base plate 1, an air pump 4 and a fixed box 5 fixedly installed on the bottom surface of the base plate 1, a fan blade 6 movably connected to the inner cavity of the fixed box 5, a drive gear shaft 7 movably connected to the front end of the base plate 1, a transmission component 8 at the bottom end of the drive gear shaft 7, a driven gear ring 9 fixedly installed on the side wall of the rotating platform 2, a fixed plate 10 fixedly installed at the top end of the base plate 1, a rotating shaft 11 movably connected to the bottom end of the fixed plate 10, a conductive component 12 at the bottom end of the rotating shaft 11, a conductive rod 13 fixedly installed on the bottom surface of the fixed plate 10, a controller 15 fixedly installed at the left end of the base plate 1, a connecting wire harness 14 electrically connected to the top end of the controller 15, and an air outlet pipe 16 fixedly installed at the front end of the fixed box 5. When the air pump 4 is started, it draws outside air into the inner cavity of the fixed box 5. Once inside, the air drives the fan blades 6 to rotate. The fan blades 6, through the transmission assembly 8, drive the drive gear shaft 7 to rotate. The meshing of the drive gear shaft 7 with the driven gear ring 9 drives the rotating platform 2 to rotate clockwise. When the multilayer capacitor rotates clockwise and enters below the conductive wheel 121, the electrodes at both ends of the multilayer capacitor contact the bottom of the conductive wheel 121, thus transmitting the high-voltage current from the conductive wheel 121 to the multilayer capacitor, thereby performing high-voltage testing. As the rotating platform 2 continues to rotate, the tested multilayer capacitor is conveyed clockwise to the discharge chute 3. During the process of conveying to the discharge trough 3, unqualified multilayer capacitors can be removed. When the multilayer capacitor rotates to the top of the discharge trough 3, it enters the discharge pipe downward under the action of gravity for discharge. As the rotating platform 2 continues to rotate, there are no multilayer capacitors in the square slot on the right side of the rotating platform 2. New multilayer capacitors can be placed in the empty square slot for continuous testing. As the rotating platform 2 continues to rotate, the contact between the conductive wheel 121 and the rotating platform 2 can ensure that the conductive wheel 121 always rotates. Since the conductive rod 13 is attached to the top of the conductive wheel 121, when the conductive wheel 121 rotates to the bottom of the conductive rod 13, the conductive rod 13 can clean the debris on the conductive wheel 121. Airflow enters the fixed box 5, driving the fan blades 6 to rotate. As the fan blades 6 rotate, they drive the rotating platform 2 to rotate via the transmission assembly 8 and the drive gear shaft 7. The conductive wheel 121 contacts the multilayer capacitor, continuously detecting the multilayer capacitor. The detected multilayer capacitor is then directly fed into the discharge chute 3. After discharge, a new multilayer capacitor is added to the right side of the rotating platform 2. This separates the loading, detection, and unloading processes, ensuring that loading and unloading do not interfere with the detection work. Continuous detection can be performed during loading and unloading, thus increasing the efficiency of the device. The conductive rod 13 contacts the top of the rotating conductive wheel 121, scraping off any remaining debris from the top of the conductive wheel 121.

[0024] Among them, an air inlet pipe 19 is fixedly installed at the front end of the air pump 4, an electromagnet 20 is fixedly installed in the inner cavity of the air inlet pipe 19, a permanent magnet plate 21 is movably connected to the inner cavity of the air inlet pipe 19, a heating jacket 22 and a cooling jacket 23 are fixedly installed on the upper and lower sides of the front end of the air inlet pipe 19 respectively, a fixing pipe 24 is fixedly installed on the top surface of the fixing plate 10, and a high-pressure nozzle 25 is fixedly installed at the front end of the fixing pipe 24. The air rotating inside the fixed box 5 enters the fixed tube 24 through the air outlet 16. The air then enters the high-pressure nozzle 25 through the fixed tube 24 and is sprayed onto the multilayer capacitor through the bottom end of the high-pressure nozzle 25. At this time, the heating jacket 22 can be activated to heat the top end of the air inlet pipe 19, thereby giving the air drawn into the air pump 4 a certain temperature. The air sprayed from the high-pressure nozzle 25 can then heat the environment around the multilayer capacitor, thus simulating use in a high-temperature environment. Alternatively, the cooling jacket 23 can be activated to cool the bottom end of the air inlet pipe 19. Similarly, the air entering the fixed box 5 cools the environment around the multilayer capacitor through the high-pressure nozzle 25, thus simulating use in a low-temperature environment. Furthermore, the gas sprayed from the high-pressure nozzle 25 can blow away debris from above the multilayer capacitor to be tested. The airflow entering the fixed box 5 drives the fan blade 6 to rotate and is discharged from the air outlet 16. The airflow enters the high-pressure nozzle 25 through the air outlet 16 and the fixed pipe 24 and flows towards the multilayer capacitor. By controlling the opening and closing of the heating jacket 22 or the cooling jacket 23, the multilayer capacitor can be sprayed with airflow at higher and lower temperatures, thereby simulating the use of the multilayer capacitor at high or low temperatures and improving the accuracy of the device's detection. The airflow sprayed from the high-pressure nozzle 25 can blow the residual debris scraped off by the conductive rod 13 backward, avoiding interference from the detection and thus avoiding poor contact, thereby improving the accuracy of the device's detection.

[0025] Among them, a connecting strip 26 is fixedly installed on the rear side of the fixing plate 10, and a discharge ring 27 is movably sleeved at the bottom end of the connecting strip 26; Since the discharge ring 27 is connected to the rear side of the fixed plate 10 by the connecting strip 26, before the second inspection of the defective products in the first inspection, the defective multilayer capacitors first come into contact with the discharge ring 27 as the rotating platform 2 rotates. The discharge ring 27 short-circuits and discharges the two ends of the multilayer capacitors, so that the multilayer capacitors entering the conductive wheel 121 are not charged. By setting a discharge ring 27 on the front side of the fixed plate 10, the multilayer capacitor can be automatically discharged through the contact between the discharge ring 27 and the multilayer capacitor during secondary detection, thus giving the device a multi-functional effect.

[0026] The transmission assembly 8 includes a first transmission wheel 801, which is fixedly mounted on the bottom surface of the drive gear shaft 7. A transmission belt 802 is connected to the surface of the first transmission wheel 801, and a second transmission wheel 803 is connected to the rear end of the transmission belt 802. The second transmission wheel 803 is fixedly mounted on the top end of the fan blade 6. The transmission belt 802 connects the first transmission wheel 801 and the second transmission wheel 803, so that the fan blade 6 can drive the drive gear shaft 7 to rotate when it rotates. The diameter of transmission wheel 2 803 is three times larger than that of transmission wheel 1 801, thereby accelerating the rotation of the drive gear shaft 7, increasing the rotation speed of the rotating platform 2, and improving the working efficiency of the device.

[0027] The conductive component 12 includes a conductive wheel 121, which is movably connected to the surface of the rotating shaft 11. Both ends of the conductive wheel 121 are provided with positioning rings 122, which are fitted to the conductive wheel 121 and fixedly installed on the surface of the rotating shaft 11.

[0028] Among them, a fixed shaft 17 is fixedly installed in the middle of the top surface of the rotating platform 2, a clamping plate 18 is fixedly installed at the top of the fixed shaft 17, the right end of the fixed plate 10 is movably connected to the middle of the clamping plate 18, a square groove is opened on the surface of the rotating platform 2, a discharge pipe is fixedly installed on the bottom surface of the bottom plate 1, and the projection of the discharge trough 3 in the horizontal direction is located inside the discharge pipe. A multilayer capacitor is placed in the square hole opened on the rotating platform 2, and the multilayer capacitor is not placed in the square groove above the discharge groove 3. When the rotating platform 2 rotates, the multilayer capacitor can be driven to enter the discharge groove 3. When the rotating platform 2 rotates, the fixed shaft 17 is driven to rotate. After the multilayer capacitors are fed into the inlet / outlet trough 3, they automatically move downwards to discharge, increasing the automation level of the device. At the same time, the clamping plate 18 positions the right end of the fixing plate 10, thereby ensuring that the fixing plate 10 is always in a horizontal state and ensuring the stability of the device operation.

[0029] There are two electromagnets 20, which are located on the upper and lower sides of the front end of the air pump 4 respectively. The permanent magnet plate 21 is movably connected inside the two electromagnets 20 and magnetically connected to the two electromagnets 20. Powering the electromagnet 20 below generates magnetism, causing the permanent magnet plate 21 to move downwards and seal the bottom of the air intake pipe 19. Similarly, powering the electromagnet 20 above generates magnetism, causing the permanent magnet plate 21 to move upwards and seal the top of the air intake pipe 19. By moving the permanent magnet plate 21 up or down, the temperature of the air entering the fixed box 5 can be changed, thereby achieving automatic switching and improving the automation level of the device.

[0030] Among them, the high-pressure nozzle 25 is "C" shaped, and the high-pressure nozzle 25 is connected to the fixed box 5 through the fixed pipe 24 and the air outlet pipe 16; The "C"-shaped high-pressure nozzle 25 can redirect the gas entering the high-pressure nozzle 25, thereby ensuring that the gas can clean the debris from front to back, avoiding debris interference with the detection and ensuring the accuracy of the detection.

[0031] Among them, the bottom end of the discharge ring 27 contacts the top surface of the base plate 1, and the connecting strip 26 is made of hard rubber material; To prevent the discharge ring 27 from diverting current to the connecting strip 26 when discharging the multilayer capacitor, the current is prevented from flowing through the fixed plate 10, thus ensuring the safety of the device.

[0032] The bottom surface of the conductive rod 13 is in contact with the top of the conductive wheel 121, and the conductive rod 13 is electrically connected to the controller 15 through the connecting wire harness 14. The controller 15 is activated, and the controller 15 supplies power to the conductive rod 13 through the connecting wire harness 14. Since the bottom end of the conductive rod 13 is in contact with the top end of the conductive wheel 121, the current is transmitted to the conductive wheel 121. The current generated by the controller 15 supplies power to the conductive wheel 121 through the connecting wire harness 14 and the conductive rod 13. When the multilayer capacitor comes into contact with the conductive wheel 121, current can be passed through the multilayer capacitor, ensuring that the multilayer capacitor can be energized smoothly.

[0033] Working principle and usage process: When in use, the controller 15 is started, and the controller 15 supplies power to the conductive rod 13 through the connecting wire harness 14. Since the bottom end of the conductive rod 13 is in contact with the top end of the conductive wheel 121, the current is transmitted to the conductive wheel 121. A multilayer capacitor is placed in the square hole opened on the rotating platform 2, and it is ensured that no multilayer capacitor is placed in the square slot above the discharge trough 3. Then, the air pump 4 is started. When the air pump 4 is working, it draws outside air into the inner cavity of the fixed box 5. When the air enters the fixed box 5, it drives the fan blade 6 to rotate. When the fan blade 6 rotates, it drives the transmission wheel 1 801 and the transmission wheel 2 803 through the transmission belt 802, which can drive the drive gear shaft 7 to rotate. Through the meshing of the drive gear shaft 7 and the driven gear ring 9, the rotating platform 2 can be driven to rotate clockwise. When the multilayer capacitor rotates clockwise into the underside of the conductive wheel 121, the electrodes at both ends of the multilayer capacitor contact the bottom end of the conductive wheel 121, thereby transmitting the high voltage current on the conductive wheel 121 into the multilayer capacitor, thus performing high voltage detection on the multilayer capacitor. During testing, the air rotating inside the fixed box 5 enters the fixed tube 24 through the air outlet 16. The air then enters the high-pressure nozzle 25 through the fixed tube 24 and is sprayed onto the multilayer capacitor through the bottom of the high-pressure nozzle 25. At this time, the electromagnet 20 below is powered to generate magnetism, causing the permanent magnet plate 21 to move downward. Then, the heating jacket 22 is activated to heat the top of the air inlet pipe 19, so that the air drawn into the air pump 4 has a certain temperature. At this time, the air sprayed from the high-pressure nozzle 25 can raise the temperature of the environment around the multilayer capacitor, thereby simulating use in a high-temperature environment. Alternatively, the electromagnet 20 above is energized to generate magnetism, causing the permanent magnet plate 21 to be attracted upward. At this time, the cooling jacket 23 is activated to cool the bottom of the air inlet pipe 19. Similarly, the air entering the fixed box 5 at this time cools the environment around the multilayer capacitor through the high-pressure nozzle 25, thereby simulating use in a low-temperature environment. As the rotating platform 2 continues to rotate, the inspected multilayer capacitors can be conveyed clockwise to the discharge trough 3. During the conveying process to the discharge trough 3, unqualified multilayer capacitors can be removed. When the multilayer capacitor rotates to the top of the discharge trough 3, it enters the discharge pipe downward under the action of gravity for discharge. As the rotating platform 2 continues to rotate, there are no multilayer capacitors in the square trough on the right side of the rotating platform 2. New multilayer capacitors can be placed in the empty square trough for continuous inspection. Since the discharge ring 27 is connected to the rear side of the fixed plate 10 by the connecting strip 26, before the second inspection of the defective products in the first inspection, the defective multilayer capacitors first come into contact with the discharge ring 27 as the rotating platform 2 rotates. The discharge ring 27 short-circuits and discharges the two ends of the multilayer capacitors, so that the multilayer capacitors entering the conductive wheel 121 are not charged.

[0034] As the rotating platform 2 rotates continuously, the conductive wheel 121 contacts the rotating platform 2, allowing the conductive wheel 121 to rotate continuously. Since the conductive rod 13 is in contact with the top of the conductive wheel 121, when the conductive wheel 121 rotates to the bottom of the conductive rod 13, the conductive rod 13 can clean the debris on the conductive wheel 121, and the gas sprayed from the high-pressure nozzle 25 can blow the remaining debris away from the multilayer capacitor to be tested.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional high-voltage testing device for multilayer capacitors, comprising a base plate (1), characterized in that: A rotating platform (2) is movably connected above the base plate (1). A square slot for placing multilayer capacitors is provided on the surface of the rotating platform (2). A discharge chute (3) is provided at the front end of the base plate (1). An air pump (4) and a fixed box (5) are fixedly installed on the bottom surface of the base plate (1). A fan blade (6) is movably connected to the inner cavity of the fixed box (5). A drive gear shaft (7) is movably connected to the front end of the base plate (1). A transmission assembly (8) is provided at the bottom end of the drive gear shaft (7). A driven gear ring (9) is fixedly installed on the side wall of the rotating platform (2). A fixing plate (10) is fixedly installed at the top of the base plate (1). A rotating shaft (11) is movably connected to the bottom end of the fixing plate (10). A conductive component (12) is provided at the bottom end of the rotating shaft (11). A conductive rod (13) is fixedly installed on the bottom surface of the fixing plate (10). A controller (15) is fixedly installed at the left end of the base plate (1). A connecting wire harness (14) is electrically connected to the top end of the controller (15). An air outlet pipe (16) is fixedly installed at the front end of the fixing box (5). When the air pump (4) is working, it draws outside air into the inner cavity of the fixing box (5). An air inlet pipe (19) is fixedly installed at the front end of the air pump (4). An electromagnet (20) is fixedly installed in the inner cavity of the air inlet pipe (19). A permanent magnet plate (21) is movably connected to the inner cavity of the air inlet pipe (19). A heating jacket (22) and a cooling jacket (23) are fixedly installed on the upper and lower sides of the front end of the air inlet pipe (19), respectively. A fixing pipe (24) is fixedly installed on the top surface of the fixing plate (10). A high-pressure nozzle (25) is fixedly installed at the front end of the fixing pipe (24). The air sprayed by the high-pressure nozzle is used to heat up or cool down the environment around the multilayer capacitor. There are two electromagnets (20), which are located on the upper and lower sides of the front end of the air pump (4). The permanent magnet plate (21) is movably connected to the interior of the two electromagnets (20) and magnetically connected to the two electromagnets (20). The high-pressure nozzle (25) is "C" shaped and is connected to the fixed box (5) through the fixed pipe (24) and the air outlet pipe (16). The transmission assembly (8) includes a first transmission wheel (801), which is fixedly mounted on the bottom surface of the drive gear shaft (7). A transmission belt (802) is connected to the surface of the first transmission wheel (801), and a second transmission wheel (803) is connected to the rear end of the transmission belt (802). The second transmission wheel (803) is fixedly mounted on the top of the fan blade (6). The conductive component (12) includes a conductive wheel (121), which is movably connected to the surface of the rotating shaft (11). The bottom surface of the conductive rod (13) is in contact with the top end of the conductive wheel (121). The conductive rod (13) is electrically connected to the controller (15) through a connecting wire harness (14). The electrodes at both ends of the multilayer capacitor are in contact with the bottom end of the conductive wheel (121).

2. The multifunctional high-voltage testing device for multilayer capacitors according to claim 1, characterized in that: A connecting strip (26) is fixedly installed on the rear side of the fixing plate (10), and a discharge ring (27) is movably sleeved at the bottom end of the connecting strip (26).

3. The multifunctional high-voltage testing device for multilayer capacitors according to claim 1, characterized in that: The conductive wheel (121) is provided with positioning rings (122) at both ends. The positioning rings (122) are attached to the conductive wheel (121) and fixedly installed on the surface of the rotating shaft (11).

4. A multifunctional high-voltage testing device for multilayer capacitors according to claim 1, characterized in that: A fixed shaft (17) is fixedly installed in the middle of the top surface of the rotating platform (2). A clamping plate (18) is fixedly installed at the top of the fixed shaft (17). The right end of the fixed plate (10) is movably connected to the middle of the clamping plate (18). A discharge pipe is fixedly installed on the bottom surface of the base plate (1). The projection of the discharge trough (3) in the direction of gravity is located inside the discharge pipe.

5. A multifunctional high-voltage testing device for multilayer capacitors according to claim 2, characterized in that: The bottom end of the discharge ring (27) is in contact with the top surface of the base plate (1), and the connecting strip (26) is made of hard rubber material.

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