Device and method for manufacturing high-magnetic-permeability nanocrystalline square magnetic core

Abstract

The invention relates to the technical field of nanocrystalline magnetic core manufacturing, in particular to a high-magnetic-permeability nanocrystalline square magnetic core manufacturing device and method.The high-magnetic-permeability nanocrystalline square magnetic core manufacturing device comprises a machine body, an observation door and a spraying mechanism and further comprises a position adjusting assembly, the observation door is arranged on the front face of the machine body, and the spraying mechanism is arranged on the back face of the machine body; a waste liquid collecting mechanism is arranged on the lower side in the machine body, a spray gun of the spraying mechanism penetrates through the left side and the right side of the machine body and is exposed in the machine body, the spraying mechanism can conduct electrostatic powder spraying on workpieces in the machine body during working, and the waste liquid collecting mechanism can visually observe the conditions of the workpieces in the machine body. According to the device, the inner ring spraying mode and the outer surface spraying mode can be easily switched through the electric telescopic rod and the connecting steel cable, the vertical falling frame can be rapidly changed into the horizontal state from the vertical state through the sliding design of the clamping frame, different spraying requirements are met, workpieces do not need to be clamped again, and the adjusting time is saved.

Description

Technical Field

[0001] This invention relates to the field of nanocrystalline magnetic core manufacturing technology, and in particular to an apparatus and method for manufacturing high-permeability nanocrystalline square magnetic cores. Background Technology

[0002] Nanocrystalline magnetic cores are magnetic cores made of soft magnetic materials composed of nanoscale (typically 10-20 nanometers) grain structures. They are not a single amorphous or crystalline material, but a unique composite structure of "amorphous matrix + nanocrystals".

[0003] Chinese patent application CN202122180728.5 discloses a nanocrystalline magnetic core epoxy powder combined spraying device. Although this application realizes the coating process of the inner and outer diameters of the magnetic core by immersing it in fluidized bed powder, the coating thickness is extremely difficult to control for the magnetic core due to the immersion method. It is overly dependent on the viscosity of the paint. The higher the viscosity, the thicker the paint is carried out. At the same time, the slower the lifting speed, the thinner the coating is, which can easily lead to an excessively thick and uneven coating. Especially at the bottom and corners of the magnetic core, the paint is prone to accumulate and form "paint nodules" or "water droplets" thickening. An excessively thick coating will bring huge internal stress, which can easily cause the brittle nanocrystalline magnetic core to crack.

[0004] Therefore, how to provide a device and method for manufacturing high-permeability nanocrystalline square magnetic cores is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus and method for manufacturing high-permeability nanocrystalline square magnetic cores to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high permeability nanocrystalline square magnetic core manufacturing device, comprising a body, an observation door, and a spraying mechanism, and further comprising a position adjustment component. The observation door is provided on the front of the body, the spraying mechanism is provided on the back of the body, and a waste liquid collection mechanism is provided on the lower side of the body. The spray gun of the spraying mechanism penetrates through the left and right sides of the body and is exposed inside the body. When the spraying mechanism is working, it can perform electrostatic powder spraying on the workpiece inside the body. The waste liquid collection mechanism can provide a direct observation of the condition of the workpiece inside the body.

[0007] The position adjustment component includes: The drive motor is fixedly connected to the back of the machine body. The drive motor has an output shaft that passes through the back of the machine body and extends into the machine body where a drive connecting roller is fixedly connected. A rotating seat is fixedly connected to the front of the drive connecting roller. An extension frame is fixedly connected to the outside of the rotating seat. A drop frame is rotatably connected to the side of the extension frame away from the rotating seat. When the drive motor is working, it can drive the rotating seat and the extension frame to rotate within the machine body through the drive connecting roller.

[0008] Furthermore, it also includes an inner diameter spraying assembly, which consists of a protective shell, a drive motor, an adjusting base, a limiting slot, an elastic band, a rotating rod, a limiting flap, a spring, a pressing plate, and a nanocrystalline square magnetic core.

[0009] The protective shell is fixedly connected to the middle of the bottom of the drop frame. The drive motor is fixedly connected to the bottom of the protective shell. The drive motor has an output shaft. The adjusting base is fixedly connected to the output shaft of the drive motor. A fixing groove is opened on the left side of the adjusting base. The limiting slot is fixedly connected to the inside of the fixing groove. The elastic band is fixedly connected to the top of the adjusting base. The rotating rod is fixedly connected to the top of the fixing groove. The limiting flap is rotatably connected to the middle of the rotating rod. The pressing plate is fixedly connected to the bottom front of the limiting flap. A spring is fixedly connected to the outside of the limiting flap. The other end of the limiting flap is fixedly connected to the adjusting base. A nanocrystalline square magnetic core is provided on the top of the adjusting base. The spring can support the limiting flap, and the limiting flap can rotate outside the rotating rod.

[0010] Furthermore, it also includes a locking assembly, which consists of a moving cavity, a positioning shell, an electric telescopic rod, a moving disc, a connecting steel cable, a support plate, a spring, and a locking frame.

[0011] The movable cavity is located in the center of the rotating seat. The positioning shell is fixedly connected to the center of the front of the rotating seat. The electric telescopic rod is fixedly connected to the front of the positioning shell. The electric telescopic rod has a telescopic end. The movable disk is fixedly connected to the telescopic end of the electric telescopic rod. The connecting steel cable is fixedly connected to the back of the movable disk. The support plate is fixedly connected to the inside of the extension frame. The second spring is fixedly connected to the side of the support plate away from the rotating seat. The locking frame is fixedly connected to the other end of the second spring. The electric telescopic rod can drive the movable disk to move back and forth in the movable cavity.

[0012] Furthermore, a rotating connecting rod is fixedly connected to the side of the extension frame away from the rotating seat. The top of the front and back of the drop frame are provided with interpenetrating rotating slots on the same horizontal line. The drop frame is connected to the rotating connecting rod on the extension frame through the rotating slots, and the drop frame can rotate on the side of the extension frame away from the rotating seat.

[0013] Furthermore, the top end of the drive motor output shaft passes through the bottom of the drop frame and extends to the inside of the drop frame, where it is fixedly connected to the bottom of the adjustment base. When the drive motor is working, it can drive the adjustment base to rotate inside the drop frame.

[0014] Furthermore, the elastic card band has a groove, and the elastic card band can be inserted into the inner side of the limiting slot when it moves. When the elastic card band is inserted into the limiting slot and continues to move downward, the limiting flap can contact the groove and squeeze the elastic card band.

[0015] Furthermore, the rotating seat has a through groove to accommodate the movement of the connecting steel cable. The end of the connecting steel cable away from the moving disk passes through the through groove on the rotating seat and the middle of the support plate in sequence, and extends to the other side of the support plate to be fixedly connected to the locking frame.

[0016] Furthermore, the telescopic end of the electric telescopic rod passes through the front of the positioning shell and the front of the rotating seat and extends into the moving cavity to be fixedly connected to the moving disk. When the electric telescopic rod is working, it can drive the moving disk to move back and forth.

[0017] Furthermore, the end of the second spring away from the support plate is fixedly connected to the locking frame. The locking frame is provided with sliders on the front and back sides. The inner side of the extension frame is provided with a limiting groove corresponding to the slider. The locking frame is slidably connected to the inner side of the extension frame through the slider. The second spring can apply a force to the locking frame to move outward, and the locking frame can move inside the extension frame.

[0018] A method for using an apparatus for manufacturing high-permeability nanocrystalline square magnetic cores includes the following steps: Nanocrystalline strips of a specific width are continuously and tightly wound into toroidal cores with specified inner and outer diameters using an automatic toroidal core winding machine under precise tension control.

[0019] The wound toroidal iron core is placed into a specially made rectangular mold, and a specific pressure is applied for extrusion and shaping. Then, under strict control of the heating curve, holding temperature and time, it is vacuum annealed in a vacuum annealing furnace.

[0020] After annealing and cooling, the mold is removed, and the pre-formed rectangular iron core is placed in a magnetization device. A directional external magnetic field with an intensity of not less than 1200 Gauss is applied to magnetize it to optimize its magnetic domain orientation and further improve its magnetic properties.

[0021] The magnetized iron core is coated with epoxy resin powder using an electrostatic spraying process to form a uniform, dense protective coating on its surface, which has excellent insulation, mechanical strength and environmental resistance.

[0022] The nanocrystalline square magnetic core is placed inside the machine body and locked on the top of the adjustment base by the cooperation of the elastic clip and the limiting flip plate. Then, the drive motor is controlled to rotate inside the machine body, and the spraying mechanism is controlled to spray epoxy resin powder onto the surface of the nanocrystalline square magnetic core. The inner diameter of the nanocrystalline square magnetic core can be sprayed by controlling the drive motor.

[0023] The finished magnetic cores undergo rigorous electrical performance and dimensional inspections, and are only packaged and stored after passing the inspections.

[0024] The beneficial effects of this invention are: 1. In this invention, the nanocrystalline square magnetic core is stably bound to the adjustment base by the ratchet and ratchet teeth of the elastic clip and the limiting flap, which effectively prevents it from flying out during high-speed rotation or spraying, thus improving operational safety. The elastic recovery mechanism of the spring ensures reliable clip locking and avoids accidental loosening. 2. The present invention features an ingenious elastic cassette design with a small coverage area, which minimizes the obstruction of the nanocrystalline square magnetic core surface by the clamping points, reduces the blind zone of the coating, and allows the powder to cover the inner ring surface more comprehensively, thereby reducing the workload of subsequent dispensing or touch-up spraying and improving overall efficiency. 3. In this invention, the drive motor drives the extension frame and the drop frame to perform circular motion. The drive motor controls the rotation of the nanocrystalline square magnetic core, so that the inner ring of the nanocrystalline square magnetic core is fully exposed in the powder flow. This "rolling" motion simulates the fluidized bed effect, promotes uniform powder adhesion, and is conducive to the melting and leveling of powder during solidification, forming a dense and uniform insulating coating. 4. In this invention, although the small-amplitude swing of the drop frame is suppressed, its position can still be slightly adjusted, thereby exposing difficult-to-spray areas such as the corners of the inner ring, increasing the spray coverage area, and avoiding the problems of uneven coating or missed spraying caused by traditional fixing methods. 5. In this invention, the drop frame is adjusted to a horizontal position by an electric telescopic rod, the nanocrystalline square magnetic core is fixed horizontally, and the spray gun is directly aimed at the outer surface. This mode avoids powder from turning and splashing into the inner ring, ensuring the targeted spraying of the outer surface, reducing cross-contamination, and improving the coating accuracy. 6. In this invention, the device can easily switch between inner ring spraying and outer surface spraying modes via an electric telescopic rod and connecting steel cable. The sliding design of the clamping frame allows the drop frame to quickly change from vertical to horizontal, adapting to different spraying needs without the need to re-clamp the workpiece, saving adjustment time. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0026] Figure 1This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the drive motor of the present invention; Figure 3 This is a schematic diagram of the internal structure of the body of the present invention; Figure 4 This is a schematic diagram of the extension frame structure of the present invention; Figure 5 This is a schematic diagram of the exploded structure of the drive motor of the present invention; Figure 6 This is a schematic diagram of the exploded structure at the nanocrystalline square magnetic core of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a schematic diagram of the exploded cross-sectional structure of the elastic cassette section of the present invention; Figure 9 for Figure 8 Enlarged view of point B in the middle; Figure 10 This is a top view of the cross-sectional structure of the movable disk of the present invention; Figure 11 This is a schematic diagram of the card holder structure of the present invention.

[0027] In the diagram: 1. Machine body; 2. Observation door; 3. Spraying mechanism; 4. Waste liquid collection mechanism; 5. Position adjustment assembly; 501. Drive motor; 502. Drive connecting roller; 503. Rotating seat; 504. Extension frame; 505. Drop frame; 6. Inner diameter spraying assembly; 601. Protective shell; 602. Drive motor; 603. Adjusting base; 604. Limit slot; 605. Elastic belt; 606. Rotating rod; 607. Limit flap; 608. Spring one; 609. Pressing plate; 610. Nanocrystalline square magnetic core; 7. Engaging assembly; 701. Moving cavity; 702. Positioning shell; 703. Electric telescopic rod; 704. Moving disc; 705. Connecting steel cable; 706. Support plate; 707. Spring two; 708. Engaging frame. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0029] Example 1 refer to Figure 1-5The present invention provides a technical solution: a high permeability nanocrystalline square magnetic core manufacturing device, including a body 1, an observation door 2, and a spraying mechanism 3, and also includes a position adjustment component 5. The observation door 2 is provided on the front of the body 1, the spraying mechanism 3 is provided on the back of the body 1, and a waste liquid collection mechanism 4 is provided on the lower side inside the body 1. The spray gun of the spraying mechanism 3 penetrates through the left and right sides of the body 1 and is exposed inside the body 1. When the spraying mechanism 3 is working, it can perform electrostatic powder spraying on the workpiece inside the body 1. The waste liquid collection mechanism 4 can provide a direct observation of the condition of the workpiece inside the body 1.

[0030] The position adjustment component 5 includes: A drive motor 501 is fixedly connected to the back of the machine body 1. The drive motor 501 has an output shaft that passes through the back of the machine body 1 and extends into the machine body 1. A drive connecting roller 502 is fixedly connected to the drive connecting roller 502. A rotating seat 503 is fixedly connected to the front of the drive connecting roller 502. An extension frame 504 is fixedly connected to the outside of the rotating seat 503. A drop frame 505 is rotatably connected to the side of the extension frame 504 away from the rotating seat 503. When the drive motor 501 is working, it can drive the rotating seat 503 and the extension frame 504 to rotate inside the machine body 1 through the drive connecting roller 502.

[0031] A rotating connecting rod is fixedly connected inside the extension frame 504 on the side away from the rotating seat 503. The top of the front and back of the drop frame 505 are provided with interpenetrating rotating slots on the same horizontal line. The drop frame 505 is connected to the rotating connecting rod on the extension frame 504 through the rotating slots, and the drop frame 505 can rotate on the side of the extension frame 504 away from the rotating seat 503.

[0032] Example 2 refer to Figure 5-9 Based on Embodiment 1, the present invention provides a technical solution that further includes an inner diameter spraying assembly 6, which is composed of a protective shell 601, a drive motor 602, an adjusting base 603, a limiting slot 604, an elastic belt 605, a rotating rod 606, a limiting flap 607, a spring 608, a pressing plate 609, and a nanocrystalline square magnetic core 610.

[0033] The protective shell 601 is fixedly connected to the bottom center of the drop frame 505. The drive motor 602 is fixedly connected to the bottom of the protective shell 601. The drive motor 602 has an output shaft. The adjusting base 603 is fixedly connected to the output shaft of the drive motor 602. A fixing groove is provided on the left side of the adjusting base 603. The limiting slot 604 is fixedly connected to the inside of the fixing groove. The elastic strap 605 is fixedly connected to the top of the adjusting base 603. The rotating rod 606 is fixedly connected to the top of the fixing groove. The limiting flap 607 is rotatably connected to the middle of the rotating rod 606. The pressing plate 609 is fixedly connected to the bottom front of the limiting flap 607. The first spring 608 is fixedly connected to the outside of the limiting flap 607. The other end of the limiting flap 607 is fixedly connected to the adjusting base 603. A nanocrystalline square magnetic core 610 is provided on the top of the adjusting base 603. The first spring 608 can support the limiting flap 607. The limiting flap 607 can rotate outside the rotating rod 606.

[0034] The top of the output shaft of the drive motor 602 passes through the bottom of the drop frame 505 and extends to the inside of the drop frame 505, where it is fixedly connected to the bottom of the adjustment base 603. When the drive motor 602 is working, it can drive the adjustment base 603 to rotate inside the drop frame 505.

[0035] The elastic cassette 605 has a groove. When the elastic cassette 605 moves, it can be inserted into the inner side of the limiting slot 604. When the elastic cassette 605 is inserted into the limiting slot 604 and continues to move downward, the limiting flap 607 can contact the groove and squeeze the elastic cassette 605.

[0036] Example 3 refer to Figure 10-11 Based on Embodiment 2, the present invention provides a technical solution that further includes a locking assembly 7, which is composed of a moving cavity 701, a positioning shell 702, an electric telescopic rod 703, a moving disk 704, a connecting steel cable 705, a support plate 706, a second spring 707, and a locking frame 708.

[0037] The movable cavity 701 is located in the middle of the rotating seat 503. The positioning shell 702 is fixedly connected to the center of the front of the rotating seat 503. The electric telescopic rod 703 is fixedly connected to the front of the positioning shell 702. The electric telescopic rod 703 has a telescopic end. The movable disk 704 is fixedly connected to the telescopic end of the electric telescopic rod 703. The connecting steel cable 705 is fixedly connected to the back of the movable disk 704. The support plate 706 is fixedly connected to the inside of the extension frame 504. The second spring 707 is fixedly connected to the side of the support plate 706 away from the rotating seat 503. The locking frame 708 is fixedly connected to the other end of the second spring 707. The electric telescopic rod 703 can drive the movable disk 704 to move back and forth in the movable cavity 701.

[0038] The rotating seat 503 has a through groove to accommodate the movement of the connecting steel cable 705. The end of the connecting steel cable 705 away from the moving disk 704 passes through the through groove on the rotating seat 503 and the middle of the support plate 706 in sequence, and extends to the other side of the support plate 706 and is fixedly connected to the locking frame 708.

[0039] The telescopic end of the electric telescopic rod 703 passes through the front of the positioning shell 702 and the front of the rotating seat 503 and extends into the moving cavity 701 and is fixedly connected to the moving disk 704. When working, the electric telescopic rod 703 can drive the moving disk 704 to move back and forth.

[0040] The end of the second spring 707 away from the support plate 706 is fixedly connected to the locking frame 708. The locking frame 708 is provided with sliders on the front and back. The extension frame 504 has a limiting groove corresponding to the slider on the inner side. The locking frame 708 is slidably connected to the inner side of the extension frame 504 through the slider. The second spring 707 can apply an outward force to the locking frame 708, and the locking frame 708 can move inside the extension frame 504.

[0041] A method for using an apparatus for manufacturing high-permeability nanocrystalline square magnetic cores includes the following steps: Nanocrystalline strips of a specific width are continuously and tightly wound into toroidal cores with specified inner and outer diameters using an automatic toroidal core winding machine under precise tension control.

[0042] The wound toroidal iron core is placed into a specially made rectangular mold, and a specific pressure is applied for extrusion and shaping. Then, under strict control of the heating curve, holding temperature and time, it is vacuum annealed in a vacuum annealing furnace.

[0043] After annealing and cooling, the mold is removed, and the pre-formed rectangular iron core is placed in a magnetization device. A directional external magnetic field with an intensity of not less than 1200 Gauss is applied to magnetize it to optimize its magnetic domain orientation and further improve its magnetic properties.

[0044] The magnetized iron core is coated with epoxy resin powder using an electrostatic spraying process to form a uniform, dense protective coating on its surface, which has excellent insulation, mechanical strength and environmental resistance.

[0045] The nanocrystalline square magnetic core 610 is placed inside the machine body 1 and locked to the top of the adjusting base 603 by the cooperation of the elastic clip 605 and the limiting flap 607. Then, the drive motor 501 is controlled to rotate inside the machine body 1, and the spraying mechanism 3 is controlled to spray epoxy resin powder onto the surface of the nanocrystalline square magnetic core 610. The inner diameter of the nanocrystalline square magnetic core 610 can be sprayed by controlling the drive motor 602.

[0046] The finished magnetic cores undergo rigorous electrical performance (such as permeability and loss) and dimensional inspections. Once they pass the inspection, they are put into storage and packaged.

[0047] When it is necessary to perform targeted insulating powder coating on the inner ring of the nanocrystalline square magnetic core 610, the nanocrystalline square magnetic core 610 needs to be clamped and fixed first. This is done by placing the nanocrystalline square magnetic core 610 on the adjusting base 603, and then manually inserting the elastic strap 605 through the middle of the nanocrystalline square magnetic core 610 into the limiting slot 604. Pulling the elastic strap 605 downwards further secures the nanocrystalline square magnetic core 610 to the top of the adjusting base 603 through the three elastic straps 605. At this time, as the elastic straps 605 move downwards within the adjusting base 603, they contact and engage with the limiting flap 607. Squeezing causes spring 608 to contract, allowing the elastic clip 605 to be smoothly inserted. By setting spring 608, when it returns to its elastic state, the limiting flap 607 springs back and engages in the groove on the elastic clip 605, creating a ratchet-tooth engagement effect. This secures the nanocrystalline square magnetic core 610, preventing it from flying out during subsequent operation due to poor fixation. Because the area of ​​the elastic clip 605 is small, the area it covers of the nanocrystalline square magnetic core 610 is kept as small as possible to avoid excessive obstruction during clamping. This reduces the workload of subsequent glue application. Next, the spraying mechanism 3 is controlled to atomize and spray the paint. Then, the drive motor 501 is controlled to operate, driving multiple extension frames 504 and drop frames 505 to perform circular motion within the machine body 1. Because the bottom of the drop frame 505 is relatively heavy, it maintains a near-vertical position on the extension frames 504. Even when the drive motor 602 on the drop frame 505 operates, the oscillation amplitude is minimized. Simultaneously, this small oscillation exposes hard-to-spray areas (such as corners) during spraying, increasing... During the large-scale spraying, the drive motor 602 is then controlled to operate. When the drive motor 602 is operating, it enables the adjusting base 603 to rotate, which in turn drives the nanocrystalline square magnetic core 610 to rotate inside the drop frame 505. This maximizes the exposure of the inner ring of the nanocrystalline square magnetic core 610. The rotation of the nanocrystalline square magnetic core 610 is equivalent to making the workpiece "tumble" in the powder flow, which helps the powder to adhere more evenly. In the subsequent curing process, this even adhesion facilitates better leveling of the powder after melting, allowing the device to effectively spray the inner ring of the nanocrystalline square magnetic core 610.

[0048] When spraying is required on the outer surface of the nanocrystalline square magnetic core 610, the electric telescopic rod 703 on the front of the rotating seat 503 is operated. This allows the electric telescopic rod 703 to drive the moving disk 704 within the moving cavity 701. When the moving disk 704 moves towards the electric telescopic rod 703 within the moving cavity 701, it pulls the connecting steel cable 705, causing the locking frame 708 on the other side of the connecting steel cable 705 to be stressed. At this time, the second spring 707 is compressed, expanding the space at the drop frame 505 and preventing a reduction in spraying effect due to volume occupation. When the electric telescopic rod 703 is operated to move the moving disk 704 away from the electric telescopic rod 703, the tension of the connecting steel cable 705 on the locking frame 708 disappears, allowing the second spring 707 to elastically recover. The locking frame 708 slides outward within the extension frame 504. During this sliding process, the groove on the locking frame 708 contacts the top arc surface of the drop frame 505, pressing the drop frame 505 into the locking frame 708. At this time, the drop frame 505 is placed horizontally within the extension frame 504, ensuring that the drop frame 505 and the extension frame 504 are on the same axis. The drive motor 602 is controlled to keep the nanocrystalline square magnetic core 610 horizontal. As the drive motor 501 operates, the nanocrystalline square magnetic core 610 can be slowly sprayed. Since the position of the nanocrystalline square magnetic core 610 is fixed, the spray gun is directly aimed at the outside of the nanocrystalline square magnetic core 610, and the powder hardly bends and splashes into the inner ring, allowing the device to perform targeted spraying on the outside of the nanocrystalline square magnetic core 610.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-permeability nanocrystalline square magnetic core manufacturing device, comprising a body (1), an observation door (2), and a spraying mechanism (3), characterized in that: It also includes a position adjustment component (5), an observation door (2) is provided on the front of the body (1), a spraying mechanism (3) is provided on the back of the body (1), and a waste liquid collection mechanism (4) is provided on the lower side inside the body (1). The spray gun of the spraying mechanism (3) penetrates through the left and right sides of the body (1) and is exposed inside the body (1). When the spraying mechanism (3) is working, it can perform electrostatic powder spraying on the workpiece inside the body (1), and the waste liquid collection mechanism (4) can make a direct observation of the workpiece inside the body (1). The position adjustment component (5) includes: The drive motor (501) is fixedly connected to the back of the machine body (1). The drive motor (501) has an output shaft. The output shaft of the drive motor (501) passes through the back of the machine body (1) and extends into the machine body (1) to be fixedly connected to the drive connecting roller (502). The front of the drive connecting roller (502) is fixedly connected to the rotating seat (503). The outside of the rotating seat (503) is fixedly connected to the extension frame (504). The side of the extension frame (504) away from the rotating seat (503) is rotatably connected to the drop frame (505). When the drive motor (501) is working, it can drive the rotating seat (503) and the extension frame (504) to rotate inside the machine body (1) through the drive connecting roller (502).

2. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 1, characterized in that: It also includes an inner diameter spraying assembly (6), which is composed of a protective shell (601), a drive motor (602), an adjustment base (603), a limit slot (604), an elastic clip (605), a rotating rod (606), a limit flap (607), a spring (608), a pressing plate (609), and a nanocrystalline square magnetic core (610); The protective shell (601) is fixedly connected to the middle of the bottom of the drop frame (505). The drive motor (602) is fixedly connected to the bottom of the protective shell (601). The drive motor (602) has an output shaft. The adjusting base (603) is fixedly connected to the output shaft of the drive motor (602). A fixing groove is provided on the left side of the adjusting base (603). The limiting slot (604) is fixedly connected to the inside of the fixing groove. The elastic clip (605) is fixedly connected to the top of the adjusting base (603). The rotating rod (606) is fixedly connected to the top of the fixing groove. The limiting flap (607) is rotatably connected to the middle of the rotating rod (606), the pressing plate (609) is fixedly connected to the bottom front of the limiting flap (607), the first spring (608) is fixedly connected to the outside of the limiting flap (607), and the other end of the limiting flap (607) is fixedly connected to the adjusting base (603). The top of the adjusting base (603) is provided with a nanocrystalline square magnetic core (610), the first spring (608) can support the limiting flap (607), and the limiting flap (607) can rotate outside the rotating rod (606).

3. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 2, characterized in that: It also includes a locking assembly (7), which is composed of a moving cavity (701), a positioning shell (702), an electric telescopic rod (703), a moving disk (704), a connecting steel cable (705), a support plate (706), a second spring (707), and a locking frame (708); The movable cavity (701) is located in the middle of the rotating seat (503). The positioning shell (702) is fixedly connected to the middle of the front of the rotating seat (503). The electric telescopic rod (703) is fixedly connected to the front of the positioning shell (702). The electric telescopic rod (703) has a telescopic end. The movable disk (704) is fixedly connected to the telescopic end of the electric telescopic rod (703). The connecting steel cable (705) is fixedly connected to the back of the movable disk (704). The support plate (706) is fixedly connected to the inside of the extension frame (504). The second spring (707) is fixedly connected to the side of the support plate (706) away from the rotating seat (503). The locking frame (708) is fixedly connected to the other end of the second spring (707). The electric telescopic rod (703) can drive the movable disk (704) to move back and forth in the movable cavity (701).

4. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 3, characterized in that: A rotating connecting rod is fixedly connected to the side of the extension frame (504) away from the rotating seat (503). The top of the front and back of the drop frame (505) are provided with interpenetrating rotating slots on the same horizontal line. The drop frame (505) is connected to the rotating connecting rod on the extension frame (504) through the rotating slots. The drop frame (505) can rotate on the side of the extension frame (504) away from the rotating seat (503).

5. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 4, characterized in that: The top of the output shaft of the drive motor (602) passes through the bottom of the drop frame (505) and extends to the inside of the drop frame (505) and is fixedly connected to the bottom of the adjustment base (603). When the drive motor (602) is working, it can drive the adjustment base (603) to rotate inside the drop frame (505).

6. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 5, characterized in that: The elastic card (605) has a groove. When the elastic card (605) moves, it can be inserted into the inner side of the limiting slot (604). When the elastic card (605) is inserted into the limiting slot (604) and continues to move downward, the limiting flap (607) can contact the groove and squeeze the elastic card (605).

7. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 6, characterized in that: The rotating seat (503) has a through groove to accommodate the movement of the connecting steel cable (705). The end of the connecting steel cable (705) away from the moving disk (704) passes through the through groove on the rotating seat (503) and the middle of the support plate (706) in sequence and extends to the other side of the support plate (706) and is fixedly connected to the locking frame (708).

8. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 7, characterized in that: The telescopic end of the electric telescopic rod (703) passes through the front of the positioning shell (702) and the front of the rotating seat (503) and extends into the moving cavity (701) and is fixedly connected to the moving disk (704). When working, the electric telescopic rod (703) can drive the moving disk (704) to move back and forth.

9. The apparatus for manufacturing a high-permeability nanocrystalline square magnetic core according to claim 8, characterized in that: The end of the second spring (707) away from the support plate (706) is fixedly connected to the locking frame (708). The locking frame (708) has sliders on its front and back sides. The extension frame (504) has a limiting groove corresponding to the slider on its inner side. The locking frame (708) is slidably connected to the inner side of the extension frame (504) through the slider. The second spring (707) can apply a force to the locking frame (708) to move outward. The locking frame (708) can move inside the extension frame (504).

10. A method of using the high permeability nanocrystalline square magnetic core manufacturing apparatus according to claims 1-9, characterized in that, The following steps are included: Nanocrystalline strips of a specific width are continuously and tightly wound into toroidal cores with specified inner and outer diameters using an automatic toroidal core winding machine under precise tension control. The wound toroidal iron core is placed into a specially made rectangular mold, and a specific pressure is applied for extrusion and shaping. Then, under strict control of the heating curve, holding temperature and time, it is vacuum annealed in a vacuum annealing furnace. After annealing and cooling, the mold is removed, and the initially formed rectangular iron core is placed in a magnetization device. A directional external magnetic field with an intensity of not less than 1200 Gauss is applied to magnetize it in order to optimize its magnetic domain orientation and further improve its magnetic properties. The magnetized iron core is coated with epoxy resin powder by electrostatic spraying to form a uniform, dense protective coating on its surface, which has excellent insulation, mechanical strength and environmental resistance. The nanocrystalline square magnetic core (610) is placed inside the machine body (1), and can be locked on the top of the adjusting base (603) by the cooperation of the elastic clip (605) and the limiting flap (607). Then, the drive motor (501) is controlled to rotate inside the machine body (1), and the spraying mechanism (3) is controlled to spray epoxy resin powder onto the surface of the nanocrystalline square magnetic core (610). The inner diameter of the nanocrystalline square magnetic core (610) can be sprayed by controlling the drive motor (602). The finished magnetic cores undergo rigorous electrical performance (such as permeability and loss) and dimensional inspections. Once they pass the inspection, they are put into storage and packaged.

Images