A ferrite core special inductance detection device

Abstract

A kind of ferrite core special inductance detection equipment, including inductance detection station, the two sides of the inductance detection station are respectively provided with the magnetic core A handling turntable, magnetic core B handling turntable can corresponding magnetic core is transported to inductance detection station, the back support mechanism that magnetic core B is supported is arranged below the inductance detection station, the detection pressure head that magnetic core A is synchronously pressed on magnetic core B is arranged above the inductance detection station;The side of the magnetic core A handling turntable is provided with the magnetic core A correction transfer platform, after the position of magnetic core A is corrected, it is sent to the magnetic core A handling turntable, the side of the magnetic core A correction transfer platform is provided with magnetic core A feeding transport mechanism;The side of the magnetic core B handling turntable is provided with the magnetic core B correction transfer platform, after the position of magnetic core B is corrected, it is sent to the magnetic core B handling turntable, the side of the magnetic core B correction transfer platform is provided with magnetic core B feeding transport mechanism.

Description

Technical Field

[0001] This invention relates to the field of inductance testing technology, and in particular to a dedicated inductance testing device for ferrite cores. Background Technology

[0002] With the rapid development of 5G communication, new energy vehicles, the Internet of Things, and smart home appliances, the demand for high-frequency, low-loss, and miniaturized magnetic core inductors has surged, driving a corresponding increase in demand for testing equipment. Currently, magnetic core manufacturing urgently needs a high-speed, high-precision automated testing device to achieve stable testing accuracy and high efficiency, meeting the high-end market's requirements for product yield and stability. Traditional manual placement and pairing of products has low accuracy, and misalignment significantly impacts inductance values. Currently, automotive-grade products have stringent requirements for inductance values, and the existing manual sampling method can no longer meet market demands. There is an urgent need to develop a fully automated testing device. Once a defective magnetic core is packaged on a circuit board, the entire circuit system will be scrapped. Furthermore, manual sampling and testing are slow and inaccurate. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention proposes a dedicated inductor testing device for ferrite cores. Through an automatic transmission mechanism combined with an automatic testing system, it realizes automated testing of high-performance products, improving testing efficiency. The high-precision visual alignment method provides high positional accuracy for testing, reduces the impact of positional deviation on inductance values, and improves testing accuracy.

[0004] The technical solution adopted in this invention is:

[0005] A ferrite core inductor testing device includes an inductor testing station. On both sides of the inductor testing station are a core A transport turntable and a core B transport turntable, which can transport the corresponding cores to the inductor testing station. Below the inductor testing station is a back support mechanism that supports the core B. Above the inductor testing station is a testing head that simultaneously presses the core A down onto the core B.

[0006] A magnetic core A straightening and conveying platform is provided on one side of the magnetic core A transport turntable to transport the magnetic core A after the magnetic core A position is straightened. A magnetic core A feeding and conveying mechanism is provided on one side of the magnetic core A straightening and conveying platform.

[0007] A magnetic core B straightening and conveying platform is provided on one side of the magnetic core B conveying turntable to transport the magnetic core B after its position is straightened. A magnetic core B feeding and conveying mechanism is provided on one side of the magnetic core B straightening and conveying platform.

[0008] The magnetic core A transport turntable and the magnetic core B transport turntable operate synchronously. The magnetic core A correction and transport platform and the magnetic core B correction and transport platform adjust the position of the magnetic cores accordingly after aligning the positions of magnetic core A and magnetic core B.

[0009] Furthermore, both the magnetic core A transport turntable and the magnetic core B transport turntable are equipped with unloading stations, and the unloading stations are equipped with unloading arms that place the corresponding magnetic cores into the corresponding areas according to the detection and judgment results.

[0010] Furthermore, a magnetic core A alignment camera is provided at the magnetic core A correction and conveying platform to identify the position of magnetic core A, and a magnetic core B alignment camera is provided at the magnetic core B correction and conveying platform to identify the position of magnetic core B.

[0011] Furthermore, a testing circuit board is provided at the inductance testing station. The testing circuit board is connected to a circuit board fixture for adjusting it in all directions. The circuit board fixture includes a main support, a Z-axis micrometer slide connected above the main support, an adjustment connecting block connected to the Z-axis micrometer slide, a micrometer slide base fixed above the adjustment connecting block, a Y-axis micrometer slide connected above the micrometer slide base, a flatness adjustment screw between the Y-axis micrometer slide and the micrometer slide base, an X-axis micrometer slide connected to the Y-axis micrometer slide, and a circuit board base connected above the X-axis micrometer slide. The testing circuit board is connected to the circuit board base.

[0012] Furthermore, the magnetic core A straightening and conveying platform includes a first X-axis drive module, on which a first Y-axis control module is mounted. The first Y-axis control module is equipped with a first Z-axis drive mechanism, which includes a first vertical support base mounted on the first Y-axis control module. A first rotating connecting plate, capable of moving up and down along the first vertical support base, is mounted on the first rotating connecting plate. A rotating adsorption platform, rotatable in angle, is mounted on the first rotating connecting plate. The rotating adsorption platform is upward-facing and used to adsorb magnetic core A. A magnetic core A transfer arm, capable of conveying magnetic core A from the magnetic core A feeding and conveying mechanism to the rotating adsorption platform, is mounted on the rotating adsorption platform. The magnetic core A straightening and conveying platform can adjust and straighten the position of magnetic core A in various directions according to the alignment.

[0013] Furthermore, the magnetic core B straightening and conveying platform includes a second X-axis drive module, on which a second Y-axis control module is mounted. The second Y-axis control module is equipped with a second Z-axis drive mechanism, which includes a second vertical support base mounted on the second Y-axis control module. A second rotating connecting plate, capable of moving up and down along the second vertical support base, is mounted on the second rotating connecting plate. A rotating suction seat, rotatable at an angle, is mounted on the second rotating connecting plate and is positioned downwards to pick up the magnetic core B. The magnetic core B straightening and conveying platform can adjust and straighten the position of the magnetic core B in various directions according to the alignment.

[0014] Furthermore, both the magnetic core A transport turntable and the magnetic core B transport turntable include a turntable base, a rotating mechanism is installed on the turntable base, a turntable bottom plate is installed above the rotating mechanism, and four turntable transport modules are evenly distributed on the turntable bottom plate.

[0015] Furthermore, the turntable conveying module includes a conveying base fixed on the turntable base, and a vertically movable lifting block is installed on the conveying base. The end of the lifting block is provided with a product suction block that can attract magnetic cores. The product suction block on the magnetic core A conveying turntable is set downwards to pick up magnetic core A on the rotating adsorption platform, and the product suction block on the magnetic core B conveying turntable is set upwards to pick up magnetic core B on the rotating adsorption platform.

[0016] Furthermore, the back support mechanism includes a top column that can push the lifting block on the magnetic core B transport turntable upward. The top column is mounted on a lifting module that drives its lifting and lowering, and a force sensor is installed between the lifting module and the top column.

[0017] Furthermore, the detection pressure head is positioned above the magnetic core A transport turntable, capable of pushing the lifting block on the magnetic core A transport turntable downwards. The detection pressure head is connected to the cylinder that drives its lifting and lowering, and the cylinder is slidably connected to the lead screw lifting module through the cylinder base.

[0018] The beneficial effects of this invention are:

[0019] 1. The use of high-precision visual alignment provides higher positional accuracy for detection, reduces the impact of positional offset on inductance value, and improves detection accuracy.

[0020] 2. The synchronous dual-turntable circulating feeding and testing mechanism for magnetic cores B and A is adopted, which simultaneously improves the testing efficiency and realizes the paired testing, paired shipment and paired assembly of ferrite magnetic core products.

[0021] 3. By combining an automatic transmission mechanism with an automatic detection system, the automated detection function of high-performance products is realized, thereby improving the detection efficiency of products. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a partial structural front view schematic diagram of the present invention.

[0024] Figure 3 This is a schematic diagram of the workflow of the present invention.

[0025] Figure 4 This is a schematic diagram of the circuit board tooling fixture of the present invention.

[0026] Figure 5 This is a rear-view three-dimensional structural diagram of the magnetic core A correction and conveying platform of the present invention.

[0027] Figure 6 This is a front-view three-dimensional structural diagram of the magnetic core A correction and conveying platform of the present invention.

[0028] Figure 7 This is a front-view three-dimensional structural diagram of the magnetic core B correction and conveying platform of the present invention.

[0029] Figure 8 This is a rear-view three-dimensional structural diagram of the magnetic core B correction and conveying platform of the present invention.

[0030] Figure 9 This is a three-dimensional structural diagram of the magnetic core A conveying turntable of the present invention.

[0031] Figure 10 This is a three-dimensional structural diagram of the magnetic core B conveying turntable of the present invention.

[0032] Figure 11 This is a three-dimensional structural diagram of the turntable conveying module of the present invention.

[0033] Figure 12 This is a three-dimensional structural diagram of the back support mechanism of the present invention.

[0034] Figure 13 This is a three-dimensional structural diagram of the detection pressure head of the present invention.

[0035] Figure 14 This is a schematic diagram of the circuit board for testing according to the present invention.

[0036] Figure 15 This is a schematic diagram of the structure of magnetic core A and magnetic core B of the present invention.

[0037] Figure 16 This is a simplified structural diagram of the press-fitting test of magnetic core A and magnetic core B according to the present invention;

[0038] The components include: 1. Magnetic core B feeding and conveying mechanism; 2. Magnetic core B straightening and conveying platform; 3. Magnetic core B handling turntable; 4. Back support mechanism; 5. Magnetic core A handling turntable; 6. Magnetic core A straightening and conveying platform; 7. Magnetic core A feeding and conveying mechanism. 8. Unloading arm; 9. Inspecting pressure head; 10. Core B alignment camera; 11. Core A alignment camera; 12. Inspection circuit board; 13. Main support; 14. Z-axis micrometer slide; 15. Adjustment connecting block; 16. Micrometer slide base; 17. Y-axis micrometer slide; 18. X-axis micrometer slide; 19. Flatness adjustment screw; 20. Circuit board base; 21. Second X-axis drive module; 22. Second Y-axis control module; 23. Second vertical support base; 24. Second rotating connecting plate; 25. Rotary adsorption seat; 27. Second lifting motor; 28. Second lifting synchronous pulley; 29. ​​Second rotary motor; 30. Turntable conveying module; 31. Second turntable base; 32. Second servo motor; 33. Second reducer; 34. Second turntable base plate; 41. Top column; 42. Lifting module; 43. Force sensor; 51. 52. First turntable base; 53. First servo motor; 54. First reducer; 55. First turntable base plate; 66. First X-axis drive module; 67. First Y-axis control module; 68. First vertical support base; 69. First rotating connecting plate; 60. Rotating adsorption platform; 61. Magnetic core A transfer arm; 72. First lifting motor; 73. First lifting synchronous pulley; 74. First rotary motor; 75. First rotating synchronous pulley; 76. First lifting guide plate; 77. Second lifting guide plate; 78. Second rotating synchronous pulley; 79. Circuit board tooling fixture; 70. Magnetic core A; 71. Magnetic core B; 92. Inductance tester; 93. Cylinder; 94. Cylinder base; 95. Screw lifting module; 306. Conveying base; 307. Lifting block; 308. Product suction block; 309. Lifting guide column; 300. Return spring; 300. Adjusting screw. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments, but the invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements, and equivalents that may be included within the scope of the claims.

[0040] Reference Figures 1-3 This embodiment provides a dedicated inductor testing device for ferrite cores, including an inductor testing station. On both sides of the inductor testing station are a core A transport turntable 5 and a core B transport turntable 3, which can transport the corresponding cores to the inductor testing station. Below the inductor testing station is a back support mechanism 4 that supports the core B. Above the inductor testing station is a testing head 9 that simultaneously presses the core A76 onto the core B77.

[0041] A magnetic core A straightening and conveying platform 6 is provided on one side of the magnetic core A transport turntable 5, which is used to straighten the position of magnetic core A76 and transport it to the magnetic core A transport turntable 5. A magnetic core A feeding and conveying mechanism 7 is provided on one side of the magnetic core A straightening and conveying platform 6.

[0042] A magnetic core B straightening and conveying platform 2 is provided on one side of the magnetic core B transport turntable 3 to transport the magnetic core B77 after the position is straightened. A magnetic core B feeding and conveying mechanism 1 is provided on one side of the magnetic core B straightening and conveying platform 2.

[0043] The magnetic core A transport turntable 5 and the magnetic core B transport turntable 3 operate synchronously. The magnetic core A straightening and transporting platform 6 and the magnetic core B straightening and transporting platform 2 adjust the position of the magnetic cores according to the positions of magnetic core A76 and magnetic core B77. Specifically, the magnetic core A straightening and transporting platform 6 is equipped with a magnetic core A alignment camera 11 for identifying the position of magnetic core A76, and the magnetic core B straightening and transporting platform 2 is equipped with a magnetic core B alignment camera 10 for identifying the position of magnetic core B77.

[0044] Both the magnetic core A transport turntable 5 and the magnetic core B transport turntable 3 are equipped with unloading stations, and the unloading stations are equipped with unloading arms 8 that place the corresponding magnetic cores into the corresponding areas according to the detection and judgment results.

[0045] See Figure 4 In this embodiment, an inductance testing station is provided with a testing circuit board 12, which is connected to an inductance tester 78. The testing circuit board 12 is connected to a circuit board fixture 75 for adjusting it in all directions. The circuit board fixture includes a main support 13, and a Z-axis micrometer slide 14 is connected above the main support 13. The Z-axis micrometer slide 14 is connected to an adjustment connecting block 15. A micrometer slide base 16 is fixed above the adjustment connecting block 15. A Y-axis micrometer slide 17 is connected above the micrometer slide base 16. A flatness adjustment screw 19 is provided between the Y-axis micrometer slide 17 and the micrometer slide base 16. An X-axis micrometer slide 18 is connected to the Y-axis micrometer slide 17. A circuit board base 20 is connected above the X-axis micrometer slide 18. The testing circuit board 12 is connected to the circuit board base 20. The present invention enables the adjustment of the X, Y, and Z directions of the circuit board 12 for testing through the circuit board tooling fixture 75.

[0046] See Figure 5 , Figure 6The magnetic core A straightening and conveying platform 6 includes a first X-axis drive module 61, which is driven by a servo motor to drive a lead screw, thereby driving the mechanism mounted above it to move in the X direction. A first Y-axis control module 62 is mounted on the first X-axis drive module 61, which is controlled by a servo motor to move the lead screw in the Y direction. A first Z-axis drive mechanism is mounted on the first Y-axis control module 62, which includes a first vertical support base 63 mounted on the first Y-axis control module 62. A first rotating connecting plate 64 that can move up and down along the first vertical support base 63 is mounted on the first vertical support base 63. A rotating adsorption platform 65 that can rotate is mounted on the first rotating connecting plate 64. The rotating adsorption platform 65 is set upward for adsorbing magnetic core A. A magnetic core A transfer arm 66 that can transport magnetic core A from the magnetic core A feeding and conveying mechanism 7 to the rotating adsorption platform 65 is mounted on the rotating adsorption platform 65. The magnetic core A correction and transport platform 6 can adjust and correct the position of magnetic core A in various directions according to the alignment. Specifically, a first lifting motor 67 is installed on the first vertical support base 63. The first lifting motor 67 can drive the first lifting synchronous pulley 68 to rotate. A first lifting synchronous belt is wound between the two first lifting synchronous pulleys 68, thereby driving the first lifting guide plate 71 connected to the first lifting synchronous belt to rise and fall. The first rotating connecting plate 64 is connected to the first lifting guide plate 71 and rises and falls synchronously with it. A first rotating motor 69 is installed on the first rotating connecting plate 64. A first rotating synchronous pulley 70 is installed on the output shaft of the first rotating motor. The first rotating synchronous pulley 70 can synchronously drive the rotating adsorption platform 65 to achieve rotational movement through the first rotating synchronous belt. The magnetic core A correction and transport platform 6 corrects the position of magnetic core A in the X, Y, and Z directions based on the alignment information.

[0047] See Figure 7 , Figure 8The magnetic core B straightening and conveying platform 2 described in this embodiment includes a second X-axis drive module 21, which is driven by a servo motor and a lead screw to drive the mechanism mounted above it to move in the X direction. A second Y-axis control module 22 is mounted on the second X-axis drive module 21, which is controlled by a servo motor to move the lead screw in the Y direction. A second Z-axis drive mechanism is mounted on the second Y-axis control module 22, which includes a second vertical support base 23 mounted on the second Y-axis control module. A second rotating connecting plate 24, which can move up and down along the second vertical support base 23, is mounted on the second vertical support base 23. A rotating suction seat 25, which can rotate, is mounted on the second rotating connecting plate 24 and is positioned downwards to pick up the magnetic core B. The magnetic core B straightening and conveying platform 2 can adjust and straighten the position of the magnetic core B in various directions according to the alignment. Specifically, a second lifting motor 27 is installed on the second vertical support base 23. The second lifting motor 27 drives the second lifting synchronous pulley 28 to rotate. A second lifting synchronous belt is wound between the two second lifting synchronous pulleys 28, thereby driving the second lifting guide plate 72 connected to the second lifting synchronous belt to rise and fall. The second rotating connecting plate 24 is connected to the second lifting guide plate 72 and rises and falls synchronously with it. A second rotating motor 29 is installed on the second rotating connecting plate 24. A second rotating synchronous pulley 73 is installed on the output shaft of the second rotating motor 29. The second rotating synchronous pulley 73 can synchronously drive the rotating adsorption seat 25 to rotate through the second rotating synchronous belt. The magnetic core B correction and conveying platform 2 corrects the position of the magnetic core B in the X, Y, and Z directions using alignment information.

[0048] See Figure 9 , Figure 10 Both the magnetic core A transport turntable 5 and the magnetic core B transport turntable 3 include a turntable base. A rotating mechanism is mounted on the turntable base, and a turntable base plate is mounted above the rotating mechanism. Four turntable transport modules are evenly distributed on the turntable base plate. Specifically, the magnetic core A transport turntable 5 includes a first turntable base 51. A first servo motor 52 and a first reducer 53 are sequentially connected on the first turntable base 51. The flange of the first reducer 53 is connected to the first turntable base plate 54. Four turntable transport modules 30 are evenly distributed on the first turntable base plate 54, i.e., spaced at 90° intervals. The magnetic core B transport turntable 3 includes a second turntable base 31. A second servo motor 32 and a second reducer 33 are sequentially connected on the second turntable base 31. The flange of the second reducer 33 is connected to the second turntable base plate 34. Four turntable transport modules 30 are evenly distributed on the second turntable base plate 34, i.e., spaced at 90° intervals.

[0049] See Figure 11The turntable conveying module 30 described in this embodiment includes a conveying base 301 fixed on a turntable base. A longitudinally movable lifting block 302 is mounted on the conveying base 301. The end of the lifting block 302 is provided with a product suction block 303 capable of attracting magnetic cores. The product suction block 303 on the magnetic core A conveying turntable 5 is positioned downwards to attract magnetic core A from the rotating adsorption platform 65, while the product suction block 303 on the magnetic core B conveying turntable 3 is positioned upwards to attract magnetic core B from the rotating adsorption seat 25. Specifically, the lifting block 302 is connected to the conveying base 301 via a slider and is provided with a lifting guide post 304. A return spring 305 is provided on the lifting guide post 304, allowing the product suction block 303 to quickly return to its original position under the action of the return spring after the lifting or downward pressure is removed. An adjusting screw 306 is provided between the product suction block 303 and the lifting block 302 to adjust the flatness of the product suction block 303. Product block 303 can attract magnetic cores for transfer.

[0050] See Figure 12 In this embodiment, the back support mechanism 4 includes a top column 41 that can push the lifting block 302 on the magnetic core B transport turntable 3 upward. The top column 41 is mounted on a lifting module 42 that drives its lifting and lowering. A force sensor 43 is installed between the lifting module 42 and the top column 41. Specifically, the lifting module 42 is controlled by a servo motor.

[0051] See Figure 13 In this embodiment, the detection pressure head 9 is positioned above the magnetic core A transport turntable 5, capable of pushing the lifting block 302 on the turntable 5 downwards. The detection pressure head 9 is connected to a cylinder 91 that drives its lifting and lowering. The cylinder 91 is slidably connected to the lead screw lifting module 93 via a cylinder base 92. Specifically, the lead screw lifting module 93 is controlled by a servo motor.

[0052] In this embodiment, the magnetic core B feeding and conveying mechanism 1, magnetic core B straightening and conveying platform 2, magnetic core B conveying turntable 3, back support mechanism 4, magnetic core A conveying turntable 5, magnetic core A straightening and conveying platform 6, magnetic core A feeding and conveying mechanism 7, magnetic core B and magnetic core A unloading arms 8, and detection pressure head 9 are all mounted on the platform of the detection equipment through corresponding brackets.

[0053] See Figures 14-16Magnetic core B is manually loaded onto a tray and placed into the magnetic core B loading conveyor mechanism 1. The magnetic core B straightening and conveying platform 2 picks up the core from the conveyor belt of the magnetic core B loading conveyor mechanism 1. The magnetic core B alignment camera 10 identifies the position, and the core is straightened and transferred to the magnetic core B conveying turntable 3. The product suction block 303 of the turntable conveying module 30 on the magnetic core B conveying turntable 3 picks up the magnetic core B. The magnetic core B conveying turntable 3 rotates, rotating the turntable conveying module 30 containing the magnetic core B to the inductance testing station. Simultaneously, magnetic core A is manually loaded onto a tray and placed into the magnetic core A loading conveyor mechanism 7. The magnetic core A transfer arm 66 picks up the core from the conveyor belt of the magnetic core A loading conveyor mechanism 7 and places it onto the magnetic core A straightening and conveying platform. 6. After the position of magnetic core A is identified by the alignment camera 11, it is corrected and transmitted to the magnetic core A transport turntable 5. The product suction block 303 of the turntable transport module 30 on the magnetic core A transport turntable 5 picks up magnetic core A. The magnetic core A transport turntable 5 rotates to rotate the turntable transport module 30 with magnetic core A in it to the inductance detection station. The back support mechanism 4 rises to lift the turntable transport module 30 on the magnetic core B transport turntable 3. Magnetic core B passes through the detection circuit board 12. At the same time, the detection pressure head 9 descends and presses down on the turntable transport module 30 on the magnetic core A transport turntable 5. Magnetic core A passes through the detection circuit board 12 and is pressed firmly onto the magnetic core B product. The inductance value is detected, determined, and recorded. The back support mechanism 4 descends and the detection pressure head 9 rises. Magnetic core B and magnetic core A rotate to the unloading position. The unloading arm 8 picks up the materials. If the product is OK, the unloading arm 8 moves to place magnetic core A and magnetic core B in the OK area. For NG products, the unloading arm 8 places magnetic core A and magnetic core B into the NG area.

[0054] in Figure 16 This is just a simplified illustration; in reality, the pressure head 9 does not contact the magnetic core A76, and the top post 41 does not contact the magnetic core B77.

[0055] This invention involves feeding magnetic cores B and A, aligning and conveying them, pairing and detecting them, and then sorting and unloading them. After pairing magnetic cores A and B, their inductance values ​​are detected. A new method for pairing and detecting magnetic cores A and B is used, which, compared to the original method of detecting A with a reference sheet, cannot accurately reflect the inductance value after A and B are matched. This significantly improves the overall product yield.

[0056] This invention transforms manual inspection into automated equipment inspection. The equipment, through an automatic transmission mechanism and an automatic inspection system, meets the automated inspection requirements of high-performance products, significantly improving inspection efficiency. The automatic transmission and inspection system are seamlessly integrated, significantly increasing inspection speed and accuracy. This allows magnetic core A to accurately pass through the circuit board slot and be bonded to magnetic core B during the automatic process. The inspection efficiency is less than 3 seconds per unit, a 5-fold improvement compared to manual inspection. To achieve efficient and rapid inspection, a cyclic inspection mechanism with four rotating heads on two upper and lower turntables is designed, further enhancing inspection efficiency. A synchronous cyclic feeding mechanism for magnetic cores B and A on the upper and lower turntables is used, simultaneously improving inspection efficiency. A 1-to-1 method is used for the combined inspection of ferrite core products. Traditional manual placement can cause unstable inspection positions, leading to inaccurate data. This invention achieves automatic position correction and matching inspection. The design utilizes high-precision visual alignment correction technology to control the docking accuracy of magnetic cores A and B, improving the accuracy of inductance detection. The high-precision visual alignment method provides high positional accuracy for inspection, reducing the impact of positional deviation on inductance values ​​and improving inspection accuracy. This invention ensures precise alignment of magnetic core A and magnetic core B through an automatic correction transmission system. Compared to the original method of detecting A and a reference plate, the latter method cannot accurately reflect the inductance value after A and B are matched. By setting up upper and lower detection heads and placing a detection circuit board in the middle, and achieving simultaneous flow of the upper and lower products, the new method of detecting the pairing of magnetic core A and magnetic core B greatly improves the accuracy of matching magnetic core products. The combination of a pressurized cylinder and a pressure sensor achieves pressure control within ±1N, improving pressure stability and simultaneously increasing detection accuracy.

Claims

1. A dedicated inductance testing device for ferrite cores, comprising an inductance testing station, characterized in that: On both sides of the inductance testing station are a magnetic core A transport turntable and a magnetic core B transport turntable that can transport the corresponding magnetic cores to the inductance testing station. Below the inductance testing station is a back support mechanism that supports the magnetic core B. Above the inductance testing station is a testing head that simultaneously presses the magnetic core A down onto the magnetic core B. A magnetic core A straightening and conveying platform is provided on one side of the magnetic core A transport turntable to transport the magnetic core A after the magnetic core A position is straightened. A magnetic core A feeding and conveying mechanism is provided on one side of the magnetic core A straightening and conveying platform. A magnetic core B straightening and conveying platform is provided on one side of the magnetic core B conveying turntable to transport the magnetic core B after its position is straightened. A magnetic core B feeding and conveying mechanism is provided on one side of the magnetic core B straightening and conveying platform. The magnetic core A transport turntable and the magnetic core B transport turntable operate synchronously. The magnetic core A correction and transport platform and the magnetic core B correction and transport platform adjust the position of the magnetic cores accordingly after aligning the positions of magnetic core A and magnetic core B. The inductance testing station is equipped with a testing circuit board, which is connected to a circuit board fixture that enables its adjustment in all directions. Both the magnetic core A transport turntable and the magnetic core B transport turntable include a turntable base, a rotating mechanism is installed on the turntable base, a turntable bottom plate is installed above the rotating mechanism, and four turntable transport modules are evenly distributed on the turntable bottom plate. The turntable conveying module includes a conveying base fixed on the turntable base, and a vertically movable lifting block is installed on the conveying base. The end of the lifting block is provided with a product suction block that can attract magnetic cores. The product suction block on the magnetic core A conveying turntable is set downward to pick up magnetic core A on the rotating adsorption platform, and the product suction block on the magnetic core B conveying turntable is set upward to pick up magnetic core B on the rotating adsorption platform.

2. The inductor testing device for ferrite cores according to claim 1, characterized in that: Both the magnetic core A transport turntable and the magnetic core B transport turntable are equipped with unloading stations, and the unloading stations are equipped with unloading arms that place the corresponding magnetic cores into the corresponding areas according to the detection and judgment results.

3. The inductor testing device for ferrite cores according to claim 1, characterized in that: A magnetic core A alignment camera is installed at the magnetic core A correction and conveying platform to identify the position of magnetic core A, and a magnetic core B alignment camera is installed at the magnetic core B correction and conveying platform to identify the position of magnetic core B.

4. The inductor testing device for ferrite cores according to claim 1, characterized in that: The circuit board fixture includes a main support, a Z-axis micrometer slide connected above the main support, the Z-axis micrometer slide being connected to an adjustment connecting block, a micrometer slide base fixed above the adjustment connecting block, a Y-axis micrometer slide connected above the micrometer slide base, a flatness adjustment screw between the Y-axis micrometer slide and the micrometer slide base, an X-axis micrometer slide connected to the Y-axis micrometer slide, and a circuit board base connected above the X-axis micrometer slide. The testing circuit board is connected to the circuit board base.

5. The inductor testing device for ferrite cores according to claim 1, characterized in that: The magnetic core A straightening and conveying platform includes a first X-axis drive module, a first Y-axis control module mounted on the first X-axis drive module, a first Z-axis drive mechanism mounted on the first Y-axis control module, a first vertical support base mounted on the first Y-axis control module, a first rotating connecting plate that can move up and down along the first vertical support base, a rotating adsorption platform that can rotate at an angle mounted on the first rotating connecting plate, the rotating adsorption platform being arranged facing upwards for adsorbing magnetic core A, and a magnetic core A transfer arm mounted at the rotating adsorption platform that can transport magnetic core A from the magnetic core A feeding and conveying mechanism to the rotating adsorption platform.

6. The inductor testing device for ferrite cores according to claim 1, characterized in that: The magnetic core B correction and conveying platform includes a second X-axis drive module, a second Y-axis control module, and a second Z-axis drive mechanism. The second Z-axis drive mechanism includes a second vertical support base mounted on the second Y-axis control module. A second rotating connecting plate that can move up and down along the second vertical support base is mounted on the second vertical support base. A rotating suction seat that can rotate is mounted on the second rotating connecting plate. The rotating suction seat is arranged downwards to pick up the magnetic core B.

7. The inductor testing device for ferrite cores according to claim 1, characterized in that: The back support mechanism includes a top column that can push the lifting block on the magnetic core B transport turntable to move upward. The top column is installed on a lifting module that drives its lifting and lowering. A force sensor is installed between the lifting module and the top column.

8. The inductor testing device for ferrite cores according to claim 1, characterized in that: The detection pressure head is positioned above the magnetic core A transport turntable and can push the lifting block on the magnetic core A transport turntable to move down. The detection pressure head is connected to the cylinder that drives its lifting and lowering. The cylinder is slidably connected to the lead screw lifting module through the cylinder base.

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