A magnetic core strength testing device and testing method for an inductor

Abstract

The application relates to the technical field of electronic devices, in particular to a magnetic core strength testing device and method of an inductor, which comprises a feeding mechanism, a feeding disc, an inductor magnetic core built in the feeding disc, and a feeding guide rail to which the inductor magnetic core can be transmitted under control; a material containing tool which receives the inductor magnetic core on the feeding guide rail and moves along a predetermined track under the drive of a first driving device; a testing mechanism which comprises a strength testing meter; and a material collecting mechanism which comprises a vacuum material suction device. The application can rapidly detect the strength performance of the inductor magnetic core, avoids the problems of leaf swing and middle column fracture during the subsequent preparation of the inductor, improves the product yield, can evaluate the magnetic core strength, and can meet the complex winding requirements.

Description

Technical Field

[0001] This invention relates to the field of electronic device technology, and more specifically to a magnetic core strength testing device and testing method. Background Technology

[0002] Surface mount power inductors, as a fundamental electronic component, are widely used in various electronic devices and electronic control circuits. Currently, as electronic devices are developing towards miniaturization, lightweighting, and multifunctionality, the number of surface mount power inductors used is increasing. However, this also presents new requirements for surface mount power inductors, such as miniaturization, low mounting thickness, and high inductance.

[0003] The fabrication of surface mount inductors is usually carried out by a one-piece molding process. The specific process is as follows: Step 1, press the prepared powder into a T-core inductor core; Step 2, precisely wind enameled wire around the columnar protrusions of the inductor core; Step 3, place the wound inductor core into the mold cavity for powder filling and pressing; Step 4, demold after molding to obtain a one-piece molded inductor.

[0004] In the inductor manufacturing process, the performance of the inductor core directly affects the performance and application of the subsequent inductor. Since its strength is usually not tested during production, it can negatively impact subsequent production. For example, if the inductor core has too low strength during pressing, the central column or blade section of the core often breaks during the winding of the enameled wire. This not only affects product yield and indirectly causes material waste and increased costs, but also impacts production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an inductor core strength testing device to solve the above-mentioned technical problems;

[0006] The present invention also aims to provide a method for testing the core strength of an inductor, thereby solving the above-mentioned technical problems.

[0007] The technical problem solved by this invention can be achieved by the following technical solutions:

[0008] An inductor core strength testing device, comprising,

[0009] The feeding mechanism includes,

[0010] A feeding tray, wherein the feeding tray has an inductive magnetic core built in, and the inductive magnetic core can be controlled to be conveyed to a feeding guide rail;

[0011] The material-loading fixture receives the inductive magnetic core on the feeding guide rail and moves along a predetermined trajectory under the drive of the first driving device.

[0012] The testing mechanism includes a strength tester that is controllably movable under the control of a second driving device to contact the inductor core;

[0013] The material receiving mechanism includes a vacuum suction device located on one side of the first driving device, which can be controlled by a third driving device to pick up the inductor core on the material holding fixture.

[0014] Preferably, the first driving device includes,

[0015] First drive motor;

[0016] The slide rail connects to the first drive motor;

[0017] A lead screw is disposed in the slide groove and connected to the output shaft of the first drive motor. The material holding fixture is disposed on the lead screw via a fixture base and moves along a predetermined trajectory under the drive of the first drive motor.

[0018] Preferably, the first driving device further includes,

[0019] A limit sensor is located on the side of the chute and is used to detect the moving position of the material-holding fixture.

[0020] A limiting rod is provided on the side of the tooling base and contacts the slide groove, used to restrict movement after the material holding tooling is in place.

[0021] Preferably, the feeding tray is mounted on a tray fixing seat, and the tray fixing seat is further provided with a pneumatic device for vibrating and transferring the inductor core located on one side of the feeding tray and the feeding guide rail.

[0022] Preferably, the feeding tray includes a central column feeding tray and a blade feeding tray respectively disposed on both sides of the first driving device. The central column feeding tray is used to feed the inductor core with a first posture, and the blade feeding tray is used to feed the inductor core with a second posture.

[0023] Preferably, the feeding guide rail includes a first feeding guide rail and a second feeding guide rail. The first end of the first feeding guide rail is connected to the outlet of the central column feeding plate, and the second end of the first feeding guide rail is located above the first driving device. The first end of the second feeding guide rail is connected to the outlet of the blade feeding plate, and the second end of the second feeding guide rail is located above the first driving device.

[0024] Preferably, the material holding fixture includes,

[0025] Fixing plate;

[0026] A movable platform that can move along a first direction and a second direction is disposed on the fixed plate;

[0027] A magnetic core fixing stage is disposed on the moving platform. The magnetic core fixing stage is provided with a plurality of receiving slots for accommodating the inductor core having a first posture and the inductor core having a second posture.

[0028] Preferably, the testing apparatus includes,

[0029] The second driving device is located on one side of the first driving device, and the side of the second driving device near the first driving device is provided with a slide rail;

[0030] The strength tester is connected to the second driving device via a slider on the slide rail. The strength tester includes a push-pull force gauge on the slider and a probe at the lower end of the push-pull force gauge.

[0031] The detection device is connected to the strength tester, receives the inductor core strength test data obtained by the strength tester, and determines whether the strength of the inductor core is qualified based on the inductor core strength test data, generating a detection signal.

[0032] Preferably, the receiving mechanism includes,

[0033] The third driving device is mounted on a cylinder mounting base of a certain height and connected to the detection device. The third driving device is used to drive the vacuum suction device to move to the inductive magnetic core suction position and to drive the vacuum suction device to move to the inductive magnetic core receiving position based on the detection signal.

[0034] A telescopic rod, the first end of which is connected to the third driving device, and the second end of which is positioned toward the first driving device;

[0035] The vacuum suction device is located at the second end of the telescopic rod, and the vacuum suction device includes a vacuum generator connected to the second end of the telescopic rod and a suction nozzle located at the lower end of the vacuum generator;

[0036] The receiving box includes a first receiving box and a second receiving box arranged along the telescopic path of the telescopic rod, the first receiving box and the second receiving box being located below the suction nozzle.

[0037] A method for testing the core strength of an inductor, applied to the inductor core strength testing device, comprising,

[0038] Step S1, loading: The first driving device moves the loading fixture to the loading position, and uses a pneumatic device to transfer the inductor core in the loading tray to the loading guide rail for loading, so that the inductor core is placed into the loading fixture.

[0039] Step S2, Testing: The first driving device drives the material holding fixture to move along a set trajectory until the material holding fixture moves to below the testing mechanism. The material holding fixture adjusts the position of the inductor core in the magnetic core fixing table through the moving platform. The second driving device drives the strength tester to move downward to measure the strength of the inductor core.

[0040] Step S3, Material Receiving: The first driving device moves the material holding fixture carrying the inductor core to below the material receiving mechanism. The third driving device drives the vacuum suction device to move to the suction position. The vacuum suction device picks up the inductor core and places it into the material receiving box to complete the material receiving. Then, return to step S1 until all the inductor cores have been tested.

[0041] Preferably, in step S2, a detection device determines whether the strength of the inductor core is qualified based on the inductor core strength test data obtained by the strength tester, and generates a detection signal. The third driving device drives the vacuum suction device after picking up the inductor core to move to the inductor core receiving position based on the detection signal.

[0042] Preferably, the detection signal includes a first detection signal determining that the strength of the inductor core is qualified and a second detection signal determining that the strength of the inductor core is unqualified. The third driving device drives the vacuum suction device after picking up the inductor core to move to a first receiving box for receiving the material based on the first detection signal, or drives the vacuum suction device after picking up the inductor core to move to a second receiving box for receiving the material based on the second detection signal.

[0043] The beneficial effects of the present invention are as follows: (1) Due to the adoption of the above technical solutions, the testing device of the present invention integrates the feeding mechanism, the testing mechanism and the receiving mechanism to realize the full automation of the test, which can quickly detect the strength performance of the inductor core, avoid the problem of blade breakage or central column breakage during subsequent inductor preparation, improve the product yield, and can evaluate the strength of the inductor core, which can meet the complex winding requirements. (2) The testing method of the present invention is fast, accurate and convenient, and can solve the overall testing needs of the inductor core at one time, which can improve the testing efficiency and save labor costs. Attached Figure Description

[0044] Figure 1 This is a top view of the testing device in an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the feeding mechanism in an embodiment of the present invention;

[0046] Figure 3 This is a schematic diagram of the material-holding fixture according to an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the testing mechanism according to an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the material receiving mechanism according to an embodiment of the present invention;

[0049] Figure 6 This is a schematic diagram of the testing method steps in an embodiment of the present invention. Detailed Implementation

[0050] 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.

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0052] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0053] A device for testing the core strength of inductors, such as Figures 1 to 5 As shown, including,

[0054] Feeding mechanism 1, the feeding mechanism 1 includes,

[0055] The feeding tray 12 contains an inductive magnetic core, which can be controlled to be conveyed to the feeding guide rail 13.

[0056] The material receiving fixture 2 receives the inductive magnetic core on the feeding guide rail 13 and moves along a predetermined trajectory under the drive of the first driving device 11.

[0057] The testing mechanism 3 includes a strength tester 7, which can be controlled to move under the control of a second drive device 31 to contact the inductor core.

[0058] The material receiving mechanism 4 includes a vacuum suction device 8, which is located on one side of the first drive device 11 and can be controlled by a third drive device 41 to pick up the inductor core on the material holding fixture 2.

[0059] Specifically, the present invention also includes a control system 5, which is connected to the feeding mechanism 1, the testing mechanism 3 and the receiving mechanism 4, for controlling the entire testing device.

[0060] Specifically, this invention addresses the problem that the strength of the T-core of an inductor cannot be detected in current methods by providing an automatic testing device and method for the strength of an inductor core.

[0061] Furthermore, the feeding mechanism 1, testing mechanism 3, receiving mechanism 4, and control system 5 of the present invention are all mounted on a base 6. The feeding mechanism 1 includes a first driving device 11, a material holding fixture 2, a feeding tray 12, a pneumatic device 14, and a feeding guide rail 13. The material holding fixture 2 is mounted on the first driving device 11. The testing mechanism 3 includes a second driving device 31 and a strength tester 7. The receiving mechanism 4 includes a third driving device 41, a receiving box, and a vacuum suction device 8. The control system 5 is electrically connected to each mechanism and controls the entire testing device.

[0062] In a preferred embodiment, please further refer to Figure 2 As shown, the first driving device 11 includes,

[0063] First drive motor 111;

[0064] Slide 17 connects to the first drive motor 111;

[0065] The lead screw 16 is located in the slide groove 17 and is connected to the output shaft of the first drive motor 111. The material holding fixture 2 is mounted on the lead screw 16 via the fixture base 18 and moves along a predetermined trajectory under the drive of the first drive motor 111.

[0066] In a preferred embodiment, the first driving device 11 further includes,

[0067] Limit sensor 191 is provided on the side of slide 17, and limit rod 192 is used to limit the movement relative to slide 17 after the material loading fixture 2 is in place;

[0068] The limit rod 192 is located on the side of the tooling base 18 and contacts the slide groove 17; the limit sensor 191 is used to detect whether the material holding tool 2 has moved into place.

[0069] In a preferred embodiment, the feeding tray 12 is disposed on the tray fixing seat 15, and the tray fixing seat 15 is also provided with a pneumatic device 14 for vibrating and transferring the inductor core located on one side of the feeding tray 12 and the feeding guide rail 13.

[0070] The feeding tray 12 includes a central column feeding tray 121 and a blade feeding tray 122 respectively disposed on both sides of the first driving device 11. The central column feeding tray 121 is used to feed inductor cores with a first posture, and the blade feeding tray is used to feed inductor cores with a second posture.

[0071] In a preferred embodiment, the first orientation of the inductor core is that the inductor core is positioned laterally, with one side of the central column of the inductor core facing the upward-facing strength tester 7; the second orientation of the inductor core is that the central column of the inductor core is positioned downward-facing, with the back of the blade portion of the inductor core facing the upward-facing strength tester 7. Further preferred, the discharge ends of the central column feeding tray 121 and the blade feeding tray 122 are provided with structures for screening the inductor cores according to their orientations.

[0072] In a preferred embodiment, the feeding guide rail 13 includes a first feeding guide rail 131 and a second feeding guide rail 132. The first end of the first feeding guide rail 131 is connected to the discharge port of the central column feeding plate 121, and the second end of the first feeding guide rail 131 is located above the first driving device 11. The first end of the second feeding guide rail 132 is connected to the discharge port of the blade feeding plate 122, and the second end of the second feeding guide rail 132 is located above the first driving device 11.

[0073] Specifically, the bottom of the feeding tray 12 is provided with a tray fixing seat 15, and the central column feeding tray 121 and the blade feeding tray 122 are symmetrically arranged on both sides of the first drive device 11. The feeding tray 12, the feeding guide rail 13 and the pneumatic device 14 are electrically connected. The central column part and the blade part of the inductor core are placed into the material holding fixture 2 by the pneumatic device 14 through the feeding guide rail 13.

[0074] In a preferred embodiment, please further refer to Figure 3 As shown, the material holding fixture 2 includes,

[0075] Fixing plate 21;

[0076] A mobile platform 22, which can move along a first direction and a second direction, is mounted on a fixed plate 21;

[0077] The magnetic core fixing stage 23 is mounted on the moving platform 22. The magnetic core fixing stage 23 has multiple receiving slots for accommodating the blade portion and the central column portion of the inductor core, respectively.

[0078] The magnetic core fixing stage 23 is disposed on the moving platform 22. The magnetic core fixing stage 23 is provided with a plurality of receiving slots for accommodating the inductor core with the first posture and the inductor core with the second posture respectively.

[0079] Furthermore, when the inductor core is placed in the receiving groove in the first posture, one side of the central column of the inductor core faces the strength tester 7, which facilitates the strength tester 7 to perform strength testing on the central column of the inductor core.

[0080] Specifically, when the inductor core is placed in the receiving groove in the second posture, the inductor core is inverted, with the back of the blade portion of the inductor core facing the strength tester 7 above, so that the strength test probe can perform strength testing on the blade portion of the inductor core.

[0081] Specifically, the moving platform 22 is an XY moving precision platform that can move along the first direction of the X direction and the second direction of the Y direction. The moving platform 22 is equipped with two micro-motion knobs for controlling the movement of the platform, which are used to adjust the position of the magnetic core fixing stage 23 so that the position of the inductor magnetic core corresponds one-to-one with the position of the probe 34 of the strength tester 7.

[0082] In a preferred embodiment, please further refer to Figure 4 As shown, test facility 3 includes,

[0083] The second drive device 31 is located on one side of the first drive device 11, and the side of the second drive device 31 near the first drive device 11 is provided with a slide rail 35.

[0084] The strength tester 7 is connected to the second drive device 31 via a slider 32 on the slide rail 35. The strength tester 7 includes a push-pull force gauge 33 on the slider 32 and a probe 34 at the lower end of the push-pull force gauge 33.

[0085] The detection device is connected to the strength tester 7, receives the inductor core strength test data obtained by the strength tester 7, and determines whether the strength of the inductor core is qualified based on the inductor core strength test data, generating a detection signal.

[0086] Specifically, the probe 34 includes a first probe and a second probe, which are arranged in parallel front to back, and are used to simultaneously measure the central column and the blade section of the inductor core. The strength tester 7 only needs to move up and down, and the material holding fixture 2 only needs to move back and forth.

[0087] In a preferred embodiment, please further refer to Figure 5 As shown, the receiving mechanism 4 includes,

[0088] The third driving device 41 is mounted on a cylinder mounting base 42 of a certain height and connected to the detection device. The third driving device 41 is used to drive the vacuum suction device 8 to move to the inductor core suction position and to drive the vacuum suction device 8 to move to the inductor core receiving position based on the detection signal. Specifically, in this embodiment, the third driving device 41 is a cylinder. In other embodiments, the third driving device 41 may not be directly connected to the detection device. Instead, the third driving device 41 is connected to the control system 5, and the detection device is connected to the control system, so that the third driving device 41 and the detection device are indirectly connected. The control system 5 receives the inductor core strength judgment result from the detection device and outputs a detection signal to the third driving device 41 to drive the third driving device to work.

[0089] Telescopic rod 43, the first end of telescopic rod 43 is connected to the third drive device 41, and the second end of telescopic rod 43 is set toward the first drive device 11;

[0090] Vacuum suction device 8 is located at the second end of telescopic rod 43. Vacuum suction device 8 includes a vacuum generator 44 connected to the second end of telescopic rod 43 and a suction nozzle 45 located at the lower end of vacuum generator 44.

[0091] The receiving box, located below the suction nozzle 45, includes a first receiving box 46 and a second receiving box 47 arranged along the telescopic path of the telescopic rod 43. The first receiving box 46 and the second receiving box 47 are located below the suction nozzle 45.

[0092] A method for testing the core strength of an inductor, applicable to the core strength testing apparatus for the inductor in any of the embodiments, such as... Figure 6 As shown, including,

[0093] Step S1, feeding: The first drive device 11 moves the loading fixture 2 to the feeding position, and the pneumatic device 14 transmits the inductor core in the loading tray 12 to the loading guide rail 13 for feeding, so that the inductor core is placed into the loading fixture 2.

[0094] Step S2, Test: The first driving device 11 drives the material holding fixture 2 to move along the set trajectory, and moves the material holding fixture 2 to the bottom of the test mechanism 3. The material holding fixture 2 adjusts the position of the inductor core in the magnetic core fixing table 23 through the moving platform 22, and drives the strength tester 7 to move downward through the second driving device 31 to measure the strength of the inductor core.

[0095] Step S3, receiving: The first drive device 11 moves the holding fixture 2 carrying the inductor core to below the receiving mechanism 4. The third drive device 41 drives the vacuum suction device 8 to move to the suction position. The vacuum suction device 8 picks up the inductor core and places it into the receiving box to complete the receiving. Then, return to step S1 until all inductor cores have been tested.

[0096] In a preferred embodiment, in step S2, the third driving device 41 receives a detection signal generated by a detection device based on the strength test data of the inductor core obtained by the strength tester 7 to determine whether the strength of the inductor core is qualified. Based on the detection signal, the third driving device 41 drives the vacuum suction device 8 after picking up the inductor core to move to the inductor core receiving position.

[0097] In a preferred embodiment, the detection signal includes a first detection signal that determines the strength of the inductor core is qualified and a second detection signal that determines the strength of the inductor core is unqualified. The third driving device 41 drives the vacuum suction device 8 after picking up the inductor core to move to a first receiving box 46 for receiving the material based on the first detection signal, or drives the vacuum suction device 8 after picking up the inductor core to move to a second receiving box 47 for receiving the material based on the second detection signal.

[0098] The detection signals include a first detection signal that determines the strength of the inductor core is qualified and a second detection signal that determines the strength of the inductor core is unqualified. The third drive device 41 drives the vacuum suction device 8 after picking up the inductor core to move to a first receiving box 46 to collect the material based on the first detection signal, or drives the vacuum suction device 8 after picking up the inductor core to move to a second receiving box 47 to collect the material based on the second detection signal.

[0099] Specific implementation one of the inductor core strength testing method provided by this invention:

[0100] Step 1, feeding process: Start the feeding switch of the control system 5 and the first drive device 11. The pneumatic device 14 vibrates the T-shaped magnetic core in the feeding tray 12 so that the blade part and the central column part of the T-shaped magnetic core are placed into the corresponding positions on the magnetic core fixing table 23 in the material holding fixture 2.

[0101] Step 2, Testing Procedure: The lead screw of the first drive device 11 drives the material holding fixture 2 to move in a straight line. When the material holding fixture 2 is moved to the lower part of the testing mechanism 3, the moving platform 22 finely adjusts the specific positions of the blade swing part and the central column part inside the magnetic core fixing table 23. The test switch is activated, and the second drive device 31 drives the push-pull force gauge 33 with probe 34 to move straight down along the slider to measure the strength of the T-shaped magnetic core to be tested.

[0102] Step 3, Material Receiving Process: Start the first drive device 11 to move the material holding fixture 2 carrying the T-shaped magnetic core to below the material receiving mechanism 4. Start the third drive device 41 to suck in the inductor magnetic core through the suction nozzle 45 of the vacuum generator 44 connected to the telescopic rod 43. Place the inductor magnetic core that has passed the strength test into the first material receiving box 46 and place the inductor magnetic core that has failed the strength test into the second material receiving box 47 to complete the material receiving process. Finally, the first drive device 11 can drive the material holding fixture 2 back to the loading position to repeat the loading-testing-material receiving process.

[0103] In summary, the automatic testing device provided by this invention integrates the feeding mechanism 1, the testing mechanism 3, and the receiving mechanism 4 into one unit, achieving fully automated testing. It enables rapid detection of the strength performance of T-shaped magnetic cores, avoiding problems such as blade breakage or center column breakage during subsequent inductor fabrication, thus improving product yield. Furthermore, it can evaluate core strength and meet complex winding requirements. The testing method of this invention is fast, accurate, and convenient, addressing the overall testing needs of the magnetic core in one go, improving testing efficiency, and saving labor costs.

[0104] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for testing the magnetic core strength of an inductor, characterized in that, include, The feeding mechanism includes, The feeding tray has a built-in T-shaped inductor core, which can be controlled to be conveyed to a feeding guide rail; The material-loading fixture receives the T-shaped inductor core on the feeding guide rail and moves along a predetermined trajectory under the drive of the first driving device. The testing mechanism includes a strength tester that is controllably movable under the control of a second driving device to contact the T-shaped inductor core; The material receiving mechanism includes a vacuum suction device located on one side of the first driving device, which can be controlled by a third driving device to pick up the T-shaped inductor core on the material holding fixture. The feeding tray includes a central column feeding tray and a blade feeding tray respectively disposed on both sides of the first driving device. The central column feeding tray is used to feed the T-shaped inductor core with a first posture, and the blade feeding tray is used to feed the T-shaped inductor core with a second posture. The material holding fixture includes... Fixing plate; A movable platform that can move along a first direction and a second direction is disposed on the fixed plate; A magnetic core fixing platform is provided on the mobile platform. The magnetic core fixing platform is provided with a plurality of receiving slots for accommodating the T-shaped inductor core with a first posture and the T-shaped inductor core with a second posture, respectively. The testing facility includes, The second driving device is located on one side of the first driving device, and the side of the second driving device near the first driving device is provided with a slide rail; The strength tester is connected to the second driving device via a slider on the slide rail. The strength tester includes a push-pull force gauge on the slider and a probe at the lower end of the push-pull force gauge. The detection device is connected to the strength tester, receives the strength test data of the T-shaped inductor core obtained by the strength tester, and determines whether the strength of the T-shaped inductor core is qualified based on the strength test data, generating a detection signal. When the T-shaped inductor core is placed in the receiving groove in the first posture, one side of the central column of the T-shaped inductor core faces the strength tester above, so that the strength tester can perform strength testing on the central column of the T-shaped inductor core. When the T-shaped inductor core is placed in the receiving slot in the second posture, the T-shaped inductor core is inverted, with the back of the blade portion of the T-shaped inductor core facing upwards towards the strength tester, so that the strength test probe can perform strength testing on the blade portion of the T-shaped inductor core. The probe includes a first probe and a second probe, which are arranged in parallel front and rear, respectively, for simultaneously measuring the central column and blade section of the T-shaped inductor core.

2. The inductor core strength testing device according to claim 1, characterized in that, The first driving device includes, First drive motor; The slide rail connects to the first drive motor; A lead screw is disposed in the slide groove and connected to the output shaft of the first drive motor. The material holding fixture is disposed on the lead screw via a fixture base and moves along a predetermined trajectory under the drive of the first drive motor.

3. The inductor core strength testing device according to claim 2, characterized in that, The first driving device also includes, A limit sensor is located on the side of the chute and is used to detect the moving position of the material-holding fixture. A limiting rod is provided on the side of the tooling base and contacts the slide groove, used to restrict movement after the material holding tooling is in place.

4. The inductor core strength testing device according to claim 1, characterized in that, The feeding tray is mounted on a tray fixing base, and the tray fixing base is also provided with a pneumatic device for vibrating and transferring the T-shaped inductor core located on one side of the feeding tray and the feeding guide rail.

5. The inductor core strength testing device according to claim 1, characterized in that, The feeding guide rail includes a first feeding guide rail and a second feeding guide rail. The first end of the first feeding guide rail is connected to the outlet of the central column feeding plate, and the second end of the first feeding guide rail is located above the first driving device. The first end of the second feeding guide rail is connected to the outlet of the blade feeding plate, and the second end of the second feeding guide rail is located above the first driving device.

6. The inductor core strength testing device according to claim 5, characterized in that, The receiving mechanism includes, The third driving device is mounted on a cylinder mounting base of a certain height and connected to the detection device. The third driving device is used to drive the vacuum suction device to move to the T-shaped inductor core suction position and to drive the vacuum suction device to move to the T-shaped inductor core receiving position based on the detection signal. A telescopic rod, the first end of which is connected to the third driving device, and the second end of which is positioned toward the first driving device; The vacuum suction device is located at the second end of the telescopic rod, and the vacuum suction device includes a vacuum generator connected to the second end of the telescopic rod and a suction nozzle located at the lower end of the vacuum generator; The receiving box includes a first receiving box and a second receiving box arranged along the telescopic path of the telescopic rod, the first receiving box and the second receiving box being located below the suction nozzle.

7. A method for testing the core strength of an inductor, applied to the inductor core strength testing apparatus as described in any one of claims 1-6, characterized in that, include, Step S1, loading: The first driving device moves the loading fixture to the loading position, and uses a pneumatic device to transfer the T-shaped inductor core in the loading tray to the loading guide rail for loading, so that the T-shaped inductor core is placed into the loading fixture; Step S2, Testing: The first driving device drives the material holding fixture to move along a set trajectory until the material holding fixture moves to below the testing mechanism. The material holding fixture adjusts the position of the T-shaped inductor core in the magnetic core fixing table through the moving platform. The second driving device drives the strength tester to move downward to measure the strength of the T-shaped inductor core. Step S3, receiving: The first driving device moves the material holding fixture carrying the T-shaped inductor core to below the receiving mechanism, and the third driving device drives the vacuum suction device to move to the suction position. The vacuum suction device sucks up the T-shaped inductor core and places it into the receiving box to complete the receiving. Return to step S1 until all T-type inductor cores have been tested.

8. The method for testing the core strength of an inductor according to claim 7, characterized in that, In step S2, a detection device determines whether the strength of the T-shaped inductor core is qualified based on the strength test data of the T-shaped inductor core obtained by the strength tester, and generates a detection signal. The third driving device drives the vacuum suction device after picking up the T-shaped inductor core to move to the T-shaped inductor core receiving position based on the detection signal.

9. The method for testing the core strength of an inductor according to claim 8, characterized in that, The detection signal includes a first detection signal that determines the strength of the T-shaped inductor core is qualified and a second detection signal that determines the strength of the T-shaped inductor core is unqualified. The third driving device drives the vacuum suction device after picking up the T-shaped inductor core to move to a first receiving box for receiving the material based on the first detection signal, or drives the vacuum suction device after picking up the T-shaped inductor core to move to a second receiving box for receiving the material based on the second detection signal.

Images