A magnetic core feeding device and method for automatic assembly of integrated inductors

Abstract

A core feeding device and method for automatic assembly of integrated inductors, which relates to the technical field of inductor device processing. The technical solution adopted includes a flipping device, a first conveyor belt, a second conveyor belt, an air gap detection device, and a recycling box. The flipping device includes a turntable, the rotating shaft of the turntable extends in the horizontal direction, and the turntable is also provided with at least one core carrier. The air gap detection device includes a detection head and a driving device. The detection head includes a detection bracket, a substrate, and two rotating plates respectively connected to both sides of the substrate. The substrate is provided with a thin film pressure sensor, the rotating plate is provided with a rotating shaft, and the rotating shaft is provided with an angle sensor. The present invention can realize the posture adjustment and feeding of E-type magnetic cores, and use the air gap detection device to exclude unqualified magnetic cores during the feeding process, so as to realize continuous operation and effectively improve the yield rate of inductor products; the air gap detection device can evaluate the flatness of the grinding surface of the center column and whether the air gap is qualified, and has a simple structure and low cost.

Description

Technical Field

[0001] The present invention relates to the technical field of inductor device processing, and in particular to a magnetic core feeding device and method for automatic assembly of integrated inductors. Background Art

[0002] Electromagnetic interference (EMI) filters are widely used in vehicle power supplies. The traditional EMI filter structure includes multiple differential mode inductors and common mode inductors, and the differential mode inductors and common mode inductors are independent components, which have the problem of large volume. The existing common differential mode integrated inductors have a design that uses leakage inductance as the differential mode inductance. Generally, a silicon steel sheet wrapped with an imide film is added between the two windings to provide a magnetic circuit to increase the differential mode inductance. However, the differential mode inductance that can be achieved by this method is very low and cannot meet the higher differential mode inductance requirements. If the differential mode inductance is to be increased, the product volume must be increased. In order to solve the problems of low inductance and large volume of common differential mode integrated inductors, the applicant proposed the following Figure 1 The common-mode and differential-mode integrated inductors shown in the figure use an EI core. A large air gap is set in the middle column of the E-shaped core, and coils are wound on the two side columns. The air gap improves the stability of the common-mode inductor. The larger air gap can also improve the anti-saturation capability of the differential-mode inductor. By adjusting the air gap, the differential-mode and common-mode inductances can be controlled, and the demand for higher differential-mode inductance can be met.

[0003] In the aforementioned integrated inductors, the core air gap is a key parameter affecting inductance. Currently, the primary method for processing the air gap is to use a grinder to grind the center column to form the air gap. Factors such as grinding wheel wear and collisions can easily cause air gap fluctuations or uneven grinding surfaces, affecting inductance consistency. Therefore, it is necessary to detect the air gap after grinding so that the grinding equipment can be adjusted in a timely manner and unqualified products can be eliminated to improve product yield. Traditional methods for detecting the air gap involve winding a coil around the core and measuring its inductance. This relies on manual operation and is cumbersome and inefficient, making it difficult to apply to automated, continuous production inductor assembly systems. Automatic detection methods such as laser scanning and image processing are highly efficient and can be embedded in the core loading process to form a continuous assembly line, but they are relatively expensive. Furthermore, during the loading process of the inductor automatic assembly operation, the core needs to be adjusted to the position to be assembled to facilitate assembly with other components such as the coil. Summary of the Invention

[0004] In order to solve the problem of how to achieve low-cost continuous detection of the air gap amount of E-type magnetic cores after grinding and posture adjustment during the magnetic core loading process, the present invention provides a magnetic core loading device and method for automatic assembly of integrated inductors.

[0005] The present invention provides the following technical solution: a magnetic core feeding device for automatic assembly of an integrated inductor, comprising:

[0006] A turning device, comprising a turntable and a motor for driving the turntable to rotate, wherein the rotating shaft of the turntable extends in a horizontal direction and the turntable is further provided with at least one magnetic core carrier;

[0007] a first conveyor belt and a second conveyor belt, wherein the first conveyor belt and the second conveyor belt are respectively arranged on both sides of the turntable, and the second conveyor belt is provided with a pushing device for pushing the magnetic core from the magnetic core carrier to the second conveyor belt;

[0008] An air gap detection device, the air gap detection device is arranged on one side of the turntable and corresponds to one of the magnetic core carriers, the air gap detection device includes a detection head and a driving device for driving the detection head to move linearly, the detection head includes a detection bracket, a base plate connected to the detection bracket, and two rotating plates rotatably connected to both sides of the base plate, the base plate is provided with a thin film pressure sensor on the side facing the turntable, the rotating plate is provided with a rotating shaft, and the rotating shaft is provided with an angle sensor;

[0009] A recycling box is arranged at the bottom of the turntable.

[0010] Preferably, a baffle corresponding to the first conveyor belt is further provided on the side of the turntable facing away from the first conveyor belt; the turntable is provided with four magnetic core carriers symmetrical about the center of the turntable axis; the magnetic core carrier is a U-shaped trough body that cooperates with the E-shaped magnetic core, and the central axis of the magnetic core carrier extends along the radial direction of the turntable, and the first opening and the second opening of the magnetic core carrier are respectively facing the first conveyor belt and the second conveyor belt, and the third opening of the magnetic core carrier faces away from the axis of the turntable; the magnetic core carrier is also provided with a groove corresponding to the rotating axis.

[0011] Preferably, the second conveyor belt is arranged near the top of the turntable and corresponds to the second opening of the magnetic core carrier at the top of the turntable; the recovery box corresponds to the third opening of the magnetic core carrier at the bottom of the turntable; the height of the first conveyor belt and the air gap detection device is between the second conveyor belt and the recovery box, and the first conveyor belt and the air gap detection device correspond to the first opening and the third opening of a magnetic core carrier respectively.

[0012] Preferably, the U-shaped trough body is further provided with a vacuum suction cup, the rotating shaft of the turntable is provided with an air circuit rotary joint, and the air pipe of the vacuum suction cup is connected to the air circuit rotary joint.

[0013] Preferably, avoidance grooves are provided at the top and bottom of the substrate, the angle sensor is provided on a fixed plate, and the fixed plate is connected to the substrate; the moving trajectory of the detection head extends in the horizontal direction and is perpendicular to the substrate, the detection bracket is provided with a plurality of guide columns extending in the horizontal direction, the substrate is provided with a guide sleeve slidably connected to the guide column, and a compression spring is also provided between the substrate and the detection bracket.

[0014] Preferably, the rotating shaft is further sleeved with a return torsion spring, and two ends of the return torsion spring extend to the base plate and the rotating plate respectively.

[0015] Preferably, the width of the thin film pressure sensor is greater than the center column of the E-shaped magnetic core.

[0016] Preferably, a limit plate is provided on the top of each of the first conveyor belt and the second conveyor belt, and the limit plate is provided with a guide groove extending along the length direction, and the guide groove corresponds to one of the magnetic core carriers.

[0017] Preferably, the pushing device includes a pushing bracket provided on the limiting plate, and a cylinder provided on the pushing bracket, and the piston rod of the cylinder is provided with a pushing plate extending toward the magnetic core carrier.

[0018] A method for loading magnetic cores for automatic assembly of integrated inductors, comprising the following steps:

[0019] Step 1: transport the E-shaped magnetic core to the magnetic core carrier of the flipping device using a first conveyor belt, with the air gap of the E-shaped magnetic core facing the air gap detection device;

[0020] Step 2: The air gap detection device detects the pressure distribution data of the polished surface of the center column of the E-type magnetic core and the rotation angle of the two rotating plates to evaluate whether the flatness of the polished surface of the center column and the air gap amount are qualified;

[0021] Step 3: If both the flatness and the air gap are qualified, the flipping device rotates the turntable to flip the E-type magnetic core so that the air gap faces upward and sends it to the second conveyor belt; if either the flatness or the air gap is unqualified, the flipping device sends the E-type magnetic core to the recycling box.

[0022] The beneficial effects of the present invention are: the posture adjustment and loading of the E-type magnetic core are achieved by using the first conveyor belt, the turning device, the pushing device, and the second conveyor belt, and the air gap detection device is used to eliminate unqualified magnetic cores during the loading process, thereby achieving continuous operation and effectively improving the yield of inductor products; the air gap detection device uses a thin film pressure sensor to detect the pressure distribution data of the grinding surface of the center column and the relative position of the detection head and the center column, and calculates the air gap between the center column and the two side columns in combination with the rotation angle of the rotating plate detected by the angle sensor, thereby evaluating the flatness of the grinding surface of the center column and whether the air gap amount is qualified. The structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a common-mode and differential-mode integrated inductor.

[0024] Figure 2 A side view of an embodiment of a magnetic core loading device.

[0025] Figure 3 A top view of an embodiment of a magnetic core loading device.

[0026] Figure 4 This is a three-dimensional schematic diagram of an embodiment of a magnetic core loading device.

[0027] Figure 5 Schematic diagram of an embodiment of a turntable.

[0028] Figure 6 for Figure 4 Magnified view of part A.

[0029] Figure 7 A three-dimensional schematic diagram of an embodiment of an air gap detection device.

[0030] Figure 8 A side view of an embodiment of an air gap detection device.

[0031] Figure 9 This is a schematic diagram of the operation of an air gap detection device according to an embodiment.

[0032] Figure numerals: 10, first conveyor belt; 11, limit plate; 12, guide groove; 20, turning device; 21, turntable; 22, magnetic core carrier; 22a, magnetic core carrier; 22b, magnetic core carrier; 22c, magnetic core carrier; 23, baffle; 24, groove; 25, vacuum suction cup; 26, air path rotary joint; 30, air gap detection device; 31, driving device; 32, detection bracket; 321, guide column; 33, substrate; 34, rotating plate; 35, thin film pressure sensor; 36, rotating shaft; 37, angle sensor; 38, avoidance groove; 39, reset torsion spring; 40, pushing device; 41, pushing bracket; 42, cylinder; 43, push plate; 50, second conveyor belt; 60, recovery box; 61, guide slope; 70, E-type magnetic core. DETAILED DESCRIPTION

[0033] The following is a more detailed description of the embodiments of the present invention with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the invention after studying this specification. It should be understood that the specific embodiments described herein are only used to illustrate the invention and are not intended to limit the invention.

[0034] Example 1

[0035] The present invention provides a magnetic core feeding device for automatic assembly of integrated inductors, comprising a first conveyor belt 10, a turning device 20, an air gap detection device 30, a pushing device 40, a second conveyor belt 50 and a recovery box 60.

[0036] Please refer to Figure 2-4 The first conveyor belt 10 can be a belt conveyor, one end of which can be connected to a vibrating plate, and the other end extends to the turning device 20. After the multiple E-type magnetic cores 70 are arranged in an orderly manner on the vibrating plate, they are transported to the turning device 20 by the first conveyor belt 10. A limit plate 11 is provided on the top of the first conveyor belt 10, and the limit plate 11 is provided with a guide groove 12 extending along the length direction. The guide groove 12 cooperates with the horizontally placed E-type magnetic cores 70 to facilitate guiding the multiple E-type magnetic cores to the magnetic core carrier 22 in sequence during the conveying process.

[0037] The second conveyor belt 50 has a similar structure to the first conveyor belt 10 and is also provided with a limit plate and a guide groove, but its guide groove cooperates with the vertically placed E-type magnetic core. The E-type magnetic core 70 that has passed the inspection of the air gap detection device 30 is flipped to a vertical position through the flipping device 20 and transported to the next process through the second conveyor belt 50.

[0038] The recycling bin 60 is used to recycle E-shaped magnetic cores that have failed the air gap detection device 30. It is located at the bottom of the turning device 20. To prevent the cores from breaking or chipping due to falling, a guide ramp 61 made of cushioning material is provided inside the recycling bin 60. When an unqualified E-shaped magnetic core falls into the recycling bin 60, it first contacts the guide ramp 61, reducing its kinetic energy before sliding to the lower part of the recycling bin 60.

[0039] The E-shaped magnetic cores arranged in order on the vibration plate are placed horizontally with their openings facing the side. They need to be placed vertically using the flip device 20 with their openings facing upwards to facilitate the assembly of the coils to the two side columns. Figure 2-5 The flipping device 20 includes a turntable 21 and a motor for rotating the turntable 21, which can be a servo motor or a stepper motor. The turntable 21 has a rotating axis extending horizontally and is provided with four magnetic core carriers 22 symmetrically about the axis. The motor drives the turntable 21 to rotate 90 degrees in the vertical plane, causing the four magnetic core carriers 22 to rotate and flip the opening direction of the E-shaped magnetic cores in the magnetic core carriers 22.

[0040] Specifically, the magnetic core carrier 22 is a U-shaped trough body that cooperates with the E-shaped magnetic core. The central axis of the U-shaped trough body extends along the radial direction of the turntable 21. The U-shaped trough body is open on three sides, and its first opening and second opening are respectively facing the first conveyor belt 10 and the second conveyor belt 50, and the third opening of the U-shaped trough body is away from the rotating axis of the turntable 21 and faces outward.

[0041] The first conveyor belt 10 and the second conveyor belt 50 are respectively arranged on both sides of the turntable 21. Figure 2-4 As shown, the second conveyor belt 50 is arranged near the top of the turntable 21, and its guide groove corresponds to the second opening of the magnetic core carrier 22b at the top of the turntable 21. The E-type magnetic core in the magnetic core carrier can be pushed to the second conveyor belt 50 through the second opening by the pushing device 40; the recycling box 60 corresponds to the third opening of the magnetic core carrier 22c at the bottom of the turntable 21, and the turntable 21 rotates downward, and the E-type magnetic core in the magnetic core carrier 22 falls into the recycling box 60; the height of the first conveyor belt 10 is between the second conveyor belt 50 and the recycling box 60, and its guide groove 12 corresponds to the first opening of the magnetic core carrier 22a on the left side of the turntable 21, so that the first conveyor belt 10 can deliver the horizontally placed E-type magnetic core into the magnetic core carrier. The numbering of the core carriers 22a~c is based on the position of the core carriers, not on a specific core carrier. For example, when the turntable 21 rotates 90° clockwise, the core carrier 22a on the left side of the turntable rotates to the top of the turntable, and its number is changed to 22b.

[0042] A baffle 23 corresponding to the first conveyor belt 10 is also provided on the side of the turntable 21 facing away from the first conveyor belt 10. This baffle 23 is used to close the second opening of the magnetic core carrier 22a, thereby limiting the E-shaped magnetic core 70. The length of the magnetic core carrier 22 can be shorter than that of the E-shaped magnetic core. After the E-shaped magnetic core enters the magnetic core carrier 22a and is blocked by the baffle 23, it still partially protrudes from the magnetic core carrier, preventing the magnetic core carrier from affecting other E-shaped magnetic cores on the first conveyor belt 10 during rotation.

[0043] The second conveyor belt 50 is provided with a pushing device 40 for pushing the magnetic cores from the magnetic core carrier 22 to the second conveyor belt 50. Figure 6 The pushing device 40 includes a pushing bracket 41 mounted on the limiting plate 11 and a cylinder 42 mounted on the pushing bracket 41. The piston rod of the cylinder 42 is provided with a push plate 43 extending toward the magnetic core carrier 22. The cylinder 42 drives the push plate 43 to retract, pushing the E-shaped magnetic core toward the second conveyor belt 50, and then the push plate 43 returns to its original position. In other embodiments, the pushing device 40 may also use a synchronous belt drive, a linear module, an electric push rod, or other mechanism to drive the push plate 43 to move back and forth linearly.

[0044] Furthermore, the U-shaped trough is also provided with a vacuum suction cup 25, and the rotating shaft of the turntable 21 is provided with an air circuit rotary joint 26. The air pipe of the vacuum suction cup 25 is connected to the air circuit rotary joint 26, and the air circuit rotary joint 26 is connected to the pneumatic control system. When the E-type magnetic core enters the magnetic core carrier 22, the air gap detection device 30 will press the E-type magnetic core and the magnetic core carrier 22 during the detection process to reduce the gap between the two. The vacuum suction cup 25 starts to suck the E-type magnetic core to enhance stability and prevent it from shifting during the air gap detection and rotation process; when the turntable 21 rotates 90 degrees, the vacuum suction cup 25 stops working to facilitate the E-type magnetic core to move to the second conveyor belt or recycling box. A support plate is also provided between the first and second conveyor belts and the magnetic core carrier to prevent the E-type magnetic core from getting stuck in the gap between the conveyor belt and the magnetic core carrier and affecting continuous operation.

[0045] The present invention also includes an air gap detection device 30 for detecting whether the air gap is qualified. Figures 2-4 The air gap detection device 30 is arranged on one side of the turntable 21, and its height is between the second conveyor belt 50 and the recovery box 60 and corresponds to the third opening of the magnetic core carrier 22a on the left side of the turntable.

[0046] Please refer to Figure 7-8 The air gap detection device 30 includes a detection head and a driving device 31 for driving the detection head to move linearly. The detection head includes a detection bracket 32, a base plate 33 connected to the detection bracket 32, and two rotating plates 34 respectively connected to the two sides of the base plate 33. Among them, the top and bottom of the base plate 33 are provided with avoidance grooves 38 to avoid interference between the detection head and the magnetic core carrier 22 when working; the detection bracket 32 ​​is provided with a plurality of guide columns 321 extending in the horizontal direction, and the base plate 33 is provided with a guide sleeve slidably connected to the guide column 321. A compression spring is also provided between the base plate 33 and the detection bracket 32 ​​to support the base plate 33 and play a buffering role when the detection head contacts the E-type magnetic core, thereby extending the working life.

[0047] A thin film pressure sensor 35 is also provided on the side of the substrate 33 facing the turntable 21. When it contacts the polished surface of the center column of the E-type magnetic core, the flatness of the polished surface of the center column is evaluated by the pressure distribution acting on the thin film pressure sensor 35. Preferably, the width L of the thin film pressure sensor 35 is greater than the center column of the E-type magnetic core, which facilitates identification of the relative position of the substrate and the polished surface of the center column and reduces errors in air gap calculation. The rotating plate 34 is provided with a rotating shaft 36, which is rotatably connected to the substrate 33. The rotating shaft 36 is also provided with an angle sensor 37, which is provided on a fixed plate connected to the substrate 33. The two angle sensors 37 respectively detect the rotation angles of the two rotating plates 34. The magnetic core carrier 22 is also provided with a groove 24 corresponding to the rotating shaft 36 to prevent interference.

[0048] The driving device 31 can adopt a cylinder, a linear module or a synchronous belt transmission structure, and the moving trajectory of the detection head extends in the horizontal direction and is perpendicular to the substrate 33, so that the thin film pressure sensor 35 on the substrate 33 can fit tightly with the polished surface of the qualified E-type magnetic core center column.

[0049] Furthermore, the rotating shaft 36 is also sleeved with a reset torsion spring 39 , and both ends of the reset torsion spring 39 extend to the base plate 33 and the rotating plate 34 respectively. When no detection is performed, the reset torsion spring 39 resets the rotating plate 34 .

[0050] Please refer to the working principle of the air gap detection device 30 Figure 9 . The first conveyor belt 10 delivers the horizontally placed E-type magnetic core into the magnetic core carrier 22a, with the opening of the E-type magnetic core facing the detection head. Generally, the installation position of the air gap detection device 30 should be guaranteed, and the central axis of its base plate 33 should be as collinear as possible with the central axis of the E-type magnetic core in the magnetic core carrier 22a. The driving device 31 drives the detection head to move a certain stroke toward the E-type magnetic core. This stroke ensures that the detection head applies pressure to the E-type magnetic core, and the thin film pressure sensor 35 contacts the grinding surface of the middle column, and under the restriction of the side column, the rotating plate 34 rotates. The thin film pressure sensor 35 transmits the pressure distribution data to the control unit. If there is a deviation in the grinding surface of the middle column, the pressure distribution data shows that the pressure range should be smaller than the cross-sectional area of ​​the middle column. It can be judged that the flatness of the grinding surface of the middle column is unqualified, which affects the size of the air gap. Otherwise, the flatness is judged to be qualified. After the flatness is qualified, the control unit can calculate the air gaps L1 and L2 between the center column and the two side columns respectively based on the rotation angle detected by the two angle sensors 37, combined with the basic dimensions of the detection head and the E-type magnetic core. If the errors between the two and the standard values ​​and the difference between L1 and L2 are within the preset range, it means that the air gap is qualified; if the deviation is large, it will inevitably affect the inductance consistency. The air gap is the length difference between the center column and the side columns. After the detection is completed, the detection head is reset. Preferably, due to the large width of the thin film pressure sensor 35, the relative position of the substrate and the center column grinding surface can also be determined by the pressure distribution data. There is inevitably a slight deviation in the position of the first conveyor belt 10 each time the E-type magnetic core is fed into the magnetic core carrier 22a. In combination with the relative position in the calculation of the air gap, the error can be effectively reduced.

[0051] The first conveyor belt 10, the turning device 20, the air gap detection device 30, the pushing device 40, and the second conveyor belt 50 are all electrically connected to the control unit, and the control unit can refer to the relevant technology. The first conveyor belt 10 transports the E-type magnetic core to the magnetic core carrier 22. A position sensor can be set on the baffle 23 to determine whether the E-type magnetic core is in place, and then the air gap detection device 30 is started to detect the flatness of the center column grinding surface and the amount of air gap. If both are qualified, the turntable 21 rotates 90° clockwise to send the E-type magnetic core to the top, with the opening direction of the E-type magnetic core facing upward, and becomes a vertically placed posture to be assembled. Then the pushing device 40 is used to move it to the second conveyor belt for transportation to the assembly process; otherwise, the turntable 21 rotates 90° counterclockwise, and the unqualified E-type magnetic core falls into the recycling box 60 for processing.

[0052] Example 2

[0053] The present invention provides a method for feeding magnetic cores for automatic assembly of integrated inductors, based on the feeding device described in Example 1, comprising the following steps:

[0054] In step 1, multiple E-shaped magnetic cores 70 are arranged in an orderly manner on a vibrating plate and then placed horizontally on a first conveyor belt 10. During the conveying process, the multiple E-shaped magnetic cores 70 are sequentially squeezed, and the E-shaped magnetic core 70 at the end of the first conveyor belt 10 is transported to the magnetic core carrier 22 of the flipping device 20. The first conveyor belt 10 stops, and the air gaps in the E-shaped magnetic cores 70 face the air gap detection device 30.

[0055] Step 2: Start the air gap detection device to detect the pressure distribution data of the polished surface of the center column of the E-type magnetic core and the rotation angle of the two rotating plates. The pressure distribution data can be used to first evaluate the flatness of the polished surface of the center column. If the flatness is qualified, the rotation angle detected by the two angle sensors 37 is further used. Combined with the relative position of the detection head and the polished surface of the center column and the basic dimensions of the detection head and the E-type magnetic core, the air gap amounts L1 and L2 between the center column and the two side columns are calculated respectively, and the air gap amounts L1 and L2 are evaluated to see if they are qualified; if the flatness is unqualified, go directly to step 3.

[0056] Step 3, if both the flatness and the air gap are qualified, the flipping device 20 rotates the turntable 21 to rotate the E-type magnetic core 70 clockwise 90° until the air gap is facing upward, and uses the pushing device 40 to send it to the second conveyor belt 50; if either the flatness or the air gap is unqualified, the flipping device 20 rotates counterclockwise 90° to send the E-type magnetic core 70 to the recycling box 60.

[0057] The above is a description of one or more embodiments of the present invention, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A magnetic core feeding device for automatic assembly of integrated inductors, characterized in that: include: A turning device (20), comprising a turntable (21) and a motor for driving the turntable (21) to rotate, wherein the rotation axis of the turntable (21) extends in a horizontal direction, and the turntable (21) is further provided with at least one magnetic core carrier (22); A first conveyor belt (10) and a second conveyor belt (50), wherein the first conveyor belt (10) and the second conveyor belt (50) are respectively arranged on both sides of the turntable (21), and the second conveyor belt (50) is provided with a pushing device (40) for pushing the E-shaped magnetic core from the magnetic core carrier (22) to the second conveyor belt (50); An air gap detection device (30), the air gap detection device (30) being arranged on one side of the turntable (21) and corresponding to one of the magnetic core carriers (22), the air gap detection device (30) comprising a detection head and a driving device (31) for driving the detection head to move linearly, the detection head comprising a detection bracket (32), a substrate (33) connected to the detection bracket (32), and two rotating plates (34) respectively rotatably connected to two sides of the substrate (33), a thin film pressure sensor (35) being arranged on the side of the substrate (33) facing the turntable (21), the rotating plate (34) being provided with a rotating shaft (36), and the rotating shaft (36) being provided with an angle sensor (37); A recovery box (60), wherein the recovery box (60) is arranged at the bottom of the rotating disk (21).

2. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 1 is characterized in that: A baffle (23) corresponding to the first conveyor belt (10) is also provided on the side of the turntable (21) facing away from the first conveyor belt (10); the turntable (21) is provided with four magnetic core carriers (22) symmetrically about the center of the rotation axis of the turntable (21); the magnetic core carrier (22) is a U-shaped groove body matched with the E-shaped magnetic core, the center axis of the magnetic core carrier extends along the radial direction of the turntable (21), the first opening and the second opening of the magnetic core carrier (22) are respectively oriented towards the first conveyor belt (10) and the second conveyor belt (50), and the third opening of the magnetic core carrier faces away from the rotation axis of the turntable (21); the magnetic core carrier is also provided with a groove (24) corresponding to the rotating shaft (36).

3. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 2 is characterized in that: The second conveyor belt (50) is arranged near the top of the turntable (21) and corresponds to the second opening of the magnetic core carrier (22) at the top of the turntable (21); the recovery box (60) corresponds to the third opening of the magnetic core carrier (22) at the bottom of the turntable (21); the height of the first conveyor belt (10) and the air gap detection device (30) is between the second conveyor belt (50) and the recovery box (60), and the first conveyor belt (10) and the air gap detection device (30) correspond to the first opening and the third opening of a magnetic core carrier (22), respectively.

4. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 2, characterized in that: The U-shaped trough body is further provided with a vacuum suction cup (25), the rotating shaft of the rotating disk (21) is provided with an air circuit rotating joint (26), and the air pipe of the vacuum suction cup (25) is connected to the air circuit rotating joint (26).

5. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 2, characterized in that: The top and bottom of the base plate (33) are both provided with avoidance grooves (38); the angle sensor (37) is arranged on a fixed plate, and the fixed plate is connected to the base plate (33); the moving track of the detection head extends in a horizontal direction and is perpendicular to the base plate (33); the detection bracket (32) is provided with a plurality of guide posts (321) extending in a horizontal direction; the base plate (33) is provided with a guide sleeve slidably connected to the guide posts (321); and a compression spring is further provided between the base plate (33) and the detection bracket (32).

6. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 5, characterized in that: The rotating shaft (36) is also sleeved with a return torsion spring (39), and two ends of the return torsion spring (39) extend to the base plate (33) and the rotating plate (34) respectively.

7. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 1, characterized in that: The width of the thin film pressure sensor is greater than the center column of the E-shaped magnetic core.

8. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 1, characterized in that: A limiting plate (11) is provided on the top of each of the first conveyor belt (10) and the second conveyor belt (50); the limiting plate (11) is provided with a guide groove (12) extending along the length direction, and the guide groove (12) corresponds to one of the magnetic core carriers (22).

9. The integrated inductor automatic assembly operation magnetic core feeding device according to claim 8, characterized in that: The pushing device (40) comprises a pushing bracket (41) arranged on the limiting plate (11), and a cylinder (42) arranged on the pushing bracket (41); the piston rod of the cylinder (42) is provided with a pushing plate (43) extending towards the magnetic core carrier (22).

10. A method for feeding magnetic cores for automatic assembly of integrated inductors, based on a device for feeding magnetic cores for automatic assembly of integrated inductors as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1, conveying the E-shaped magnetic core to the magnetic core carrier of the flipping device by using a first conveyor belt, with the air gap of the middle column of the E-shaped magnetic core facing the air gap detection device; Step 2, the air gap detection device detects the pressure distribution data of the grinding surface of the center column of the E-type magnetic core and the rotation angle of the two rotating plates, and evaluates whether the flatness of the grinding surface of the center column and the air gap amount are qualified; Step 3, if both the flatness and the air gap are qualified, the flipping device rotates the turntable to flip the E-type magnetic core to the air gap upward, and sends it to the second conveyor belt; if either the flatness or the air gap is unqualified, the flipping device sends the E-type magnetic core to the recycling box.

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