Preparation Method and Equipment for a High Permeability Nanocrystalline Magnetic Core

Abstract

The present invention discloses a preparation method and device for a nanocrystalline magnetic core with high magnetic permeability, which relates to the technical field of magnetic core manufacturing. The preparation device for the magnetic core includes a magnetic heat treatment mechanism and a material supporting mechanism. The magnetic heat treatment mechanism is used for performing magnetic field heat treatment on the magnetic core; the material supporting mechanism arranged on the tray includes a base, a material rod and a spacing component. The material rod on the base is used for sleeving a partition plate and the magnetic core to be heat-treated, and partition plates are arranged on both the upper and lower sides of the magnetic core. The paired swing rods in the spacing component are symmetrically distributed on both sides of the material rod, and the number of swing rods on one side of the material rod is the same as the number of magnetic cores. The output end of the distance adjustment component arranged on each swing rod is arranged on the side away from the swing rod; when a plurality of swing rods swing from the initial position to the termination position in sequence, the output end of the distance adjustment component extends into the position between adjacent partition plates to lift the plurality of magnetic cores in sequence; the preparation device for the magnetic core avoids the magnetic cores from being stacked closely together, realizing uniform heating of the magnetic cores.

Description

Technical Field

[0001] The present invention belongs to the technical field of magnetic core manufacturing, and particularly relates to a preparation method and device for a high-permeability nanocrystalline magnetic core. Background Art

[0002] The high-permeability nanocrystalline magnetic core is a magnetic material with excellent magnetic properties, which is widely used in fields such as power electronics equipment, wireless communication, sensors, filters, etc. It is composed of nanoscale grains, usually made of iron-based, cobalt-based or nickel-based materials through specific preparation processes (such as heat treatment and cooling), and is also called a nanocrystalline soft magnetic alloy magnetic core. It plays an important role in many new energy fields such as electric vehicles, wind power generation, solar inverters, energy storage systems, and smart grids, including being able to effectively improve the energy utilization efficiency and reduce the energy loss of the system.

[0003] During the preparation of the high-permeability nanocrystalline magnetic core, heat treatment needs to be carried out on the magnetic core to optimize the magnetic permeability of the nanocrystalline alloy material. And for heat treatment, a magnetic field heat treatment device is required. When the existing magnetic cores are subjected to magnetic field heat treatment, a heating structure is directly arranged in the cover body, and the magnetic cores in the cover body are heated by heat convection. When the magnetic cores reach the specified temperature, the heating is turned off. In order to increase the number of magnetic cores subjected to magnetic field heat treatment at one time, multiple magnetic cores are stacked together or placed closely together, resulting in temperature deviations at different positions of the magnetic cores, thus affecting the heat treatment effect and the stability of the magnetic core performance. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation method and device for a high-permeability nanocrystalline magnetic core with a simple structure and reasonable design to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] In the first aspect, the present invention provides a preparation device for a high-permeability nanocrystalline magnetic core, including:

[0007] A magnetic field heat treatment mechanism for performing magnetic field heat treatment on the magnetic core to be treated;

[0008] The material supporting mechanism is arranged on the tray. The material supporting mechanism includes a base, a material rod and a spacing component. The material rod is arranged on the side of the base away from the tray. The partition board and the magnetic core to be heat-treated are sleeved on the material rod, and partition boards are arranged on both the upper and lower sides of the magnetic core. The spacing component is arranged on the base and includes a swing driving part, a swing rod and a distance adjusting component. The output end of the swing driving part is in transmission connection with the swing rod. Among them, the paired swing rods are symmetrically distributed on both sides of the material rod, and the number of swing rods on one side of the material rod is the same as the number of magnetic cores. A distance adjusting component is arranged on the side of each swing rod facing the material rod, and the output end of the distance adjusting component is arranged on the side away from the swing rod;

[0009] When driven by the swing driving part, when the swing rod swings from the initial position to the termination position, the output end of the distance adjusting component extends into the position between adjacent partition boards and abuts against the upper partition board to push the upper partition board to move away from the base. Among them, along the extending direction of the material rod and in the direction away from the base, multiple swing rods swing to the termination position in sequence, so that multiple magnetic cores are lifted in sequence.

[0010] As a further optimized scheme of the present invention, the raw magnetic heat treatment mechanism includes a furnace body and a heater. A raw magnetic component is arranged in the furnace body. The tray is placed in the furnace body and the tray is located in the magnetic field area of the raw magnetic component. The heater is arranged in the furnace body and is used to heat the magnetic field area in the furnace body.

[0011] As a further optimized scheme of the present invention, the swing driving part includes a driving gear, a transition gear, a driven gear and a main shaft. The input end of the driving gear is in transmission connection with the motor. The driving gear is in meshing transmission with the transition gear. The driven gears are arranged in pairs and are in meshing transmission between the paired driven gears. The transition gear is in meshing transmission with one of the driven gears. The driven gear is fixedly connected to the main shaft. One end of the main shaft is rotatably connected to the base. A plurality of swing rods are sleeved on the main shaft on the side of the driven gear away from the base, and a torsion spring is arranged at the sleeved part of the swing rod and the main shaft. A limiting rod is arranged on the side of the swing rod facing the material rod, and the limiting rod is fixedly arranged on the base. When the swing rod is in the termination position, the swing rod abuts against the limiting rod;

[0012] Among them, the number of the transition gears is multiple, and the multiple transition gears are respectively in meshing transmission with the driving gear. The number of the transition gears is the same as the number of the material rods.

[0013] As a further optimized solution of the present invention, the distance adjustment assembly includes a sleeve, a sliding rod, a first spring, a wedge block, a contact rod, and a first connecting rod. A sleeve is fixedly arranged on the side of the swing rod facing the material rod. One end of the sliding rod is slidably connected to the inner cavity of the sleeve, and the other end of the sliding rod penetrates outside the sleeve and is fixedly connected with a wedge block. A second spring is sleeved on the sliding rod. The outer end of the wedge block is rotatably connected with a contact rod. The outer side of the contact rod facing the material rod is an arc convex surface. The inner side of the contact rod is rotatably connected with a first connecting rod, and one end of the first connecting rod far from the contact rod is rotatably connected to the sleeve;

[0014] A wedge surface is arranged at the edge position of the end of the partition plate far from the magnet core in contact. When the swing rod is in the terminal position, the wedge block is in frictional contact with the wedge surface of the partition plate located below, and the arc convex surface of the contact rod is in frictional contact with the wedge surface of the partition plate located above.

[0015] As a further optimized solution of the present invention, through holes are formed in the partition plate. Along the axis direction of the material rod, the through holes penetrate the partition plate, and along the radial direction of the partition plate, the width dimension value of the through holes is greater than the width dimension value of the magnet core.

[0016] As a further optimized solution of the present invention, a socket is arranged on the side of the base far from the tray. The lower end of the material rod is installed on the base through the socket. Among them, when the swing rod is in the initial position, the lower end surface of the partition plate at the lowermost end on the material rod abuts against the upper end surface of the socket, and there is a spaced arrangement between the edge position of the lower end surface of the lowermost partition plate and the base.

[0017] As a further optimized solution of the present invention, a column is fixedly arranged on the base. A plurality of the material rods are circumferentially distributed on the periphery of the column. A material blocking assembly is arranged at the end of the column far from the base. The material blocking assembly includes a baffle, and the upper end of the material rod abuts against the baffle;

[0018] A cylindrical cavity is formed in the material rod, and an abutting member assembly is arranged in the cylindrical cavity of the material rod. The abutting member assembly is used to abut against the radial inner wall of the partition plate, so that there is a spaced arrangement between the radial inner wall of the partition plate and the side wall of the material rod.

[0019] As a further optimized solution of the present invention, the material blocking assembly further includes a knob, a screw rod, and a limiting block. The output end of the knob is fixedly connected with a pressing plate. The side of the pressing plate far from the knob is fixedly connected with a screw rod. The screw rod is threadedly connected with the inner cavity of the upper end of the column. The baffle is clamped between the pressing plate and the column, and a limiting block is fixedly connected to the side of the baffle far from the knob. A limiting groove is formed in the upper side part of the column, and the limiting block is in limiting contact with the column through the limiting groove.

[0020] As a further optimized solution of the present invention, the abutting component includes an abutting block, a guide rod, a second connecting rod, an inner plate, an outer plate and a second spring. The guide rod stands upright in the barrel cavity of the material rod, and an abutting block is fixedly connected to the upper end of the guide rod. A second connecting rod is rotatably connected to the side of the guide rod. One end of the second connecting rod away from the guide rod is rotatably connected to the inner plate. The outer plate is fixedly connected to the side of the inner plate away from the guide rod through a fixing block. A second spring is arranged between the inner plate and the inner wall of the barrel cavity of the material rod. One end of the second spring is fixedly connected to the inner plate, and the other end of the second spring is fixedly connected to the inner wall of the barrel cavity of the material rod. A through groove is formed in the side of the barrel cavity of the material rod. Ball bearings are embedded in the axial inner wall of the partition plate. When the baffle abuts against the upper end of the material rod, the baffle abuts against the abutting block, and the inner plate is displaced outside the material rod through the through groove and abuts against the ball bearings.

[0021] In a second aspect, the present invention also provides a preparation method for a high magnetic permeability nanocrystalline magnetic core. The magnetic core is prepared by using the above-mentioned preparation equipment for a high magnetic permeability nanocrystalline magnetic core, and the method includes the following steps:

[0022] S1. A plurality of magnetic cores to be heat-treated and a plurality of partition plates are sleeved on the material rod, and partition plates are arranged above and below the magnetic cores. Among them, the number of magnetic cores is the same as the number of swing rods on one side of the material rod;

[0023] S2. Install the baffle on the column, abut the baffle against the material rod and the abutting block, and through the sequential transmission of the guide rod, the second connecting rod, the inner plate and the outer plate, the outer plate is displaced outside the material rod and abuts against the ball bearings on the partition plate, so that the axis of the partition plate is aligned with the axis of the material rod, and an interval is provided between the axial inner wall of the partition plate and the material rod;

[0024] S3. Place the material supporting mechanism loaded with a plurality of magnetic cores on the tray, and place the tray in the magnetic field area in the furnace body;

[0025] S4. Through the drive of the swing driving member, the swing rods on both sides of the material rod swing from the initial position to the end position respectively, so that the abutting rod in the distance adjusting assembly enters the position between adjacent partition plates and abuts against the upper partition plate to push the upper partition plate to move away from the base;

[0026] S5. Through the continuous drive of the swing driving member, in the direction along the extension of the material rod and away from the base, the plurality of swing rods swing to the end position in sequence, so that the plurality of magnetic cores are lifted in sequence;

[0027] S6. Start the heater to heat the magnetic cores in the furnace body, and generate a magnetic field in the magnetic field area through the magnetic field generating component.

[0028] The present invention has at least the following beneficial effects: A preparation method and device for a high magnetic permeability nanocrystalline magnetic core disclosed by the present invention. The preparation of the high magnetic permeability nanocrystalline magnetic core includes a magnetic heat treatment mechanism and a material supporting mechanism. By means of the abutment of the baffle in the material supporting mechanism against the abutting block, the guide rod moves downward, and the inner side plate moves outward through the transmission of the second connecting rod, so that the inner side plate abuts against the ball, realizing uniform spacing between the inner side wall of the partition plate and the side wall of the material rod. Thus, when the magnetic core is placed in the furnace body for magnetic heat treatment, the hot air flow can closely contact the magnetic core through the gap between the partition plate and the material rod, making the magnetic core evenly heated;

[0029] Moreover, by means of the drive of the positioning drive member, the pair of swing rods are swung from the initial position to the end position, so that the abutting rod extends into the position between adjacent partition plates, and the partition plate above is pushed upward, increasing the gap between adjacent partition plates. By sequentially swinging multiple pairs of swing rods to the end position, multiple magnetic cores are sequentially lifted and arranged at intervals, so that when the subsequent magnetic cores placed in the furnace body are subjected to magnetic heat treatment, the hot air flow can closely contact the axial end face of the magnetic core through the gap between adjacent partition plates and the through holes of the partition plates, making the magnetic core evenly heated, thereby solving the problem that the temperatures at different positions of the existing magnetic cores stacked closely together are deviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is the internal structural schematic diagram of the magnetic heat treatment mechanism of the present invention;

[0032] Figure 3 is the top - view structural distribution schematic diagram when multiple material supporting mechanisms are placed on the tray of the present invention;

[0033] Figure 4 is the partial cross - sectional structural schematic diagram of the tray and the material supporting mechanism of the present invention;

[0034] Figure 5 is the present invention Figure 4 magnified view at A;

[0035] Figure 6 is the present invention Figure 4 magnified view at B;

[0036] Figure 7 is the present invention Figure 4 magnified view at C;

[0037] Figure 8 is the top - view structural schematic diagram of the assembled state of the material rod, the position - adjusting component, the magnetic core and the partition plate of the present invention;

[0038] Figure 9 is the present inventionFigure 8 Enlarged view of point D in the middle;

[0039] Figure 10 It is a partial structural schematic diagram of the material rod, base and column of the present invention;

[0040] Figure 11 It is a partial structural schematic diagram of the positioning drive component of the present invention;

[0041] Figure 12 is a partial top view of the structure of the spacer assembly of the present invention when it is in the initial position;

[0042] Figure 13 It is a partial cross-sectional structural schematic diagram of the distance adjustment assembly of the present invention;

[0043] Figure 14 It is a partial structural schematic diagram of the distance adjustment component of the present invention when it is located at the material supporting position;

[0044] Figure 15 The present invention Figure 14 Enlarged view of point E in the middle.

[0045] In the figure: 1, magnetic heat treatment mechanism; 11, furnace body; 12, door body; 13, heater; 2, ventilation box; 3, controller; 4, magnetic core; 5, tray; 6, material support mechanism; 61, base; 62, column; 621, clearance groove; 63, material rod; 631, through groove; 6301, socket; 64, material stop assembly; 641, knob; 642, screw; 643, baffle; 644, limit block; 6441, limit groove; 645, abutment block; 6451, guide rod; 6452, second connecting rod; 64 53. Inner plate; 6454. Fixed block; 6455. Outer plate; 6456. Partition plate; 6457. Through hole; 6458. Ball; 6459. Second spring; 60. Spacer assembly; 601. Active gear; 602. Transition gear; 603. Driven gear; 604. Main shaft; 605. Rocker arm; 606. Limit rod; 607. Distance adjustment assembly; 6071. Sleeve; 6072. First connecting rod; 6073. Abutting rod; 6074. Wedge block; 6075. First spring; 6076. Sliding rod. DETAILED DESCRIPTION

[0046] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0047] In one embodiment, if Figure 1 , Figure 2 , Figure 4 andFigure 6 As shown, a preparation device for a high magnetic permeability nanocrystalline magnetic core provided by the present invention includes:

[0048] A magnetic field heat treatment mechanism 1, which is used for performing magnetic field heat treatment on the magnetic core 4 to be processed;

[0049] A material supporting mechanism 6, the material supporting mechanism 6 is arranged on the tray 5, the material supporting mechanism 6 includes a base 61, a material rod 63 and a spacing component 60. A material rod 63 is arranged on one side of the base 61 away from the tray 5. The material rod 63 is used for sleeving partition plates 6456 and the magnetic core 4 to be heat-treated. Partition plates 6456 are arranged on both the upper and lower sides of the magnetic core 4. The spacing component 60 is arranged on the base 61. The spacing component 60 includes a swing position driving member, a swing rod 605 and a distance adjusting component 607. The output end of the swing position driving member is in transmission connection with the swing rod 605. Among them, the paired swing rods 605 are symmetrically distributed on both sides of the material rod 63. As Figure 4 shown, and the number of swing rods 605 on one side of the material rod 63 is the same as the number of magnetic cores 4. A distance adjusting component 607 is respectively arranged on one side of each swing rod 605 facing the material rod 63. The output end of the distance adjusting component 607 is arranged on the side away from the swing rod 605;

[0050] When driven by the swing position driving member, when the swing rod 605 swings from the initial position to the termination position, the output end of the distance adjusting component 607 extends into the position between adjacent partition plates 6456 and abuts against the upper partition plate 6456 to push the upper partition plate 6456 to move away from the base 61. Among them, along the extending direction of the material rod 63 and in the direction away from the base 61, the multiple swing rods 605 swing to the termination position in sequence, so that the multiple magnetic cores 4 are lifted in sequence.

[0051] Exemplarily, continue to refer to Figure 1 and Figure 2 , the magnetic field heat treatment mechanism 1 includes a furnace body 11 and a heater 13. A magnetic field generating component is arranged in the furnace body 11. The tray 5 is placed in the furnace body 11, and the tray 5 is located in the magnetic field area of the magnetic field generating component. And the heater 13 is arranged in the furnace body 11 and is used for heating the magnetic field area in the furnace body 11. A door body 12 is hinged on one side of the furnace body 11, and a heater 13 is also arranged on the side of the door body 12 facing the inner cavity of the furnace body 11. So that the magnetic core 4 is put into the furnace body 11 through the tray 5, and the working state of the magnetic field generating component and the working state of the heater 13 are controlled through the controller 3. So that under the magnetization operation of the magnetic field generating component, the magnetic core 4 is heated at a constant temperature and filled in the magnetic field. Through the combined action of heat treatment and an external magnetic field, the magnetic properties of the magnetic core 4, especially the magnetic permeability, can be optimized.

[0052] In the above embodiments, by successively swinging a plurality of swing rods 605 to their end positions, a plurality of magnetic cores 4 are successively lifted. For example, in the extending direction of the material rod 63 and away from the base 61, the output end of the distance adjusting assembly 607 on the first swing rod 605 abuts against the partition plate 6456 below the first magnetic core 4 that is pushed upward, causing the first magnetic core 4, all the magnetic cores 4 above it, and the partition plate 6456 to move upward synchronously. After the first swing rod 605 swings to its end position, the second swing rod 605 also drives the corresponding distance adjusting assembly 607 to swing until the output end of the distance adjusting assembly 607 on the second swing rod 605 abuts against the partition plate 6456 below the second magnetic core 4 that is pushed upward, causing the second magnetic core 4, all the magnetic cores 4 above it, and the partition plate 6456 to move upward synchronously until the second swing rod 605 swings to its end position, and so on until all the swing rods 605 swing to their end positions. At this time, the partition plates 6456 between all adjacent magnetic cores 4 are arranged at intervals, so that the hot air flow in the furnace body 11 can be evenly diffused to the periphery of the magnetic cores 4, making the overall heating of the magnetic cores 4 uniform and solving the problem that the temperatures at different positions of the existing magnetic cores 4 stacked closely together are deviated.

[0053] It should be noted that, as Figure 1 and Figure 2 shown, a ventilation box 2 is provided on one side of the furnace body 11. The blowing end of the ventilation box 2 is communicated with the inner cavity of the furnace body 11 to blow the hot air flow in the furnace body 11 to make it circulate, and the air extraction end of the ventilation box 2 is communicated with the inner cavity of the furnace body 11. Thus, when the magnetic cores 4 need to be cooled, the hot air flow in the furnace body 11 is extracted through the ventilation box 2 to avoid heat accumulation in a high-temperature environment, resulting in the heat treatment temperature requirement of the magnetic cores 4 exceeding the standard.

[0054] Exemplarily, continue to refer to Figure 11 and Figure 12, the positioning driving member includes a driving gear 601, an intermediate gear 602, a driven gear 603 and a main shaft 604. The input end of the driving gear 601 is in transmission connection with a motor (not shown in the figure). The driving gear 601 meshes with and drives the intermediate gear 602. The rotating shaft of the intermediate gear 602 is rotatably connected to the base 61. The driven gears 603 are arranged in pairs and mesh with each other. The intermediate gear 602 meshes with and drives one of the driven gears 603, so that the rotation directions of the two driven gears 603 are opposite. The driven gears 603 are fixedly connected to the main shaft 604. One end of the main shaft 604 is rotatably connected to the base 61. A plurality of swing rods 605 are sleeved on the main shaft 604 on the side away from the base 61 of the driven gears 603, and a torsion spring is arranged at the sleeved part of the swing rods 605 and the main shaft 604. A limiting rod 606 is arranged on the side of the swing rod 605 facing the material rod 63, and the limiting rod 606 is fixedly arranged on the base 61. When the swing rod 605 is in the terminal position, the swing rod 605 abuts against the limiting rod 606, so that the main shaft 604 drives the plurality of swing rods 605 to rotate towards the direction close to the terminal position. Under the action of the torsion spring, after one of the swing rods 605 swings to the terminal position, the adjacent swing rod 605 above the swing rod 605 can continue to rotate towards the direction close to the terminal position along with the main shaft 604;

[0055] Wherein, the number of the intermediate gears 602 is multiple, and the multiple intermediate gears 602 are respectively meshed with and driven by the driving gear 601, and the number of the intermediate gears 602 is the same as the number of the material rods 63. As Figure 11 schematically shows that the number of the intermediate gears 602 is four, that is, it means that the number of the material rods 63 is also four. In other embodiments, the number of the intermediate gears 602 can be five, six, seven, etc., and can be correspondingly set according to the number of the material rods 63, which is not limited herein.

[0056] Exemplarily, continue to refer to Figure 12 、 Figure 13 and Figure 14, the distance adjustment component 607 includes a sleeve 6071, a sliding rod 6076, a first spring 6075, a wedge 6074, a contact rod 6073 and a first connecting rod 6072. A sleeve 6071 is fixedly arranged on the side of the swing rod 605 facing the material rod 63. One end of the sliding rod 6076 is slidably connected to the inner cavity of the sleeve 6071, and the other end of the sliding rod 6076 penetrates outside the sleeve 6071 and is fixedly connected to a wedge 6074. A second spring 6459 is sleeved on the sliding rod 6076. The outer end of the wedge 6074 is rotatably connected to a contact rod 6073. The outer side of the contact rod 6073 facing the material rod 63 is an arc convex surface. The inner side of the contact rod 6073 is rotatably connected to a first connecting rod 6072. One end of the first connecting rod 6072 away from the contact rod 6073 is rotatably connected to the sleeve 6071;

[0057] A wedge surface is provided at the edge position of the end of the partition 6456 away from the abutting magnetic core 4, as Figure 14 shown. The wedge surface of the partition 6456 is in the shape of a chamfered surface, as Figure 13 shown. When the swing rod 605 is in the initial position, under the elastic force of the second spring 6459, the inclination angle of the contact rod 6073 is small, and the wedge 6074 is at the outermost end; when the swing rod 605 swings towards the direction close to the material rod 63, the arc convex surface of the contact rod 6073 abuts against the wedge surface of the partition 6456 and is squeezed into the position between adjacent partitions 6456. At this time, the wedge 6074 frictionally abuts against the wedge surface of the lower partition 6456, separating the partitions 6456. Then, with the continuous swing of the swing rod 605, the sliding rod 6076 slides relatively towards the inside of the sleeve 6071. Under the extrusion of the sliding rod 6076 and the sleeve 6071, the first spring 6075 is compressed, so that under the constraint of the first connecting rod 6072, the contact rod 6073 rotates clockwise Figure 13 as shown in the figure. By further squeezing the upper partition 6456 with the arc convex surface of the contact rod 6073, all the magnetic cores 4 and partitions 6456 above the upper partition 6456 are further lifted, further increasing the interval between adjacent partitions 6456, so as to facilitate the uniform diffusion of the hot air flow to the periphery of the magnetic core 4, making the overall heating of the magnetic core 4 uniform, that is, as Figure 14 and Figure 15 shown. When the swing rod 605 is in the termination position, the wedge 6074 frictionally abuts against the wedge surface of the lower partition 6456, and the arc convex surface of the contact rod 6073 frictionally abuts against the wedge surface of the upper partition 6456.

[0058] Exemplarily, continue to refer to Figure 6 and Figure 8, a through hole 6457 is formed in the partition plate 6456. Along the axial line direction of the material rod 63, the through hole 6457 penetrates the partition plate 6456, and along the radial direction of the partition plate 6456, the width dimension value of the through hole 6457 is greater than the width dimension value of the magnetic core 4. After the partition plate 6456 holds up the magnetic core 4, hot air flow can pass through the through hole 6457 to closely contact the axial end face of the magnetic core 4 through the through hole 6457, so that the magnetic core 4 is uniformly heated. And when cooling is carried out subsequently, the heat dissipation effect of the magnetic core 4 can also be improved by means of the through hole 6457.

[0059] Exemplarily, continue to refer to Figure 4 and Figure 10 , a socket 6301 is arranged on the side of the base 61 away from the tray 5, and the lower end of the material rod 63 is installed on the base 61 through the socket 6301. Among them, when the swing rod 605 is in the initial position, the lower end face of the partition plate 6456 at the lowermost position on the material rod 63 abuts against the upper end face of the socket 6301, and there is a spaced arrangement between the edge position of the lower end face of the lowermost partition plate 6456 and the base 61. It is convenient that when the swing rod 605 at the lowermost position swings to the termination position, the abutting rod 6073 on the swing rod 605 can extend into the lower region of the lowermost partition plate 6456 and abut against the lowermost partition plate 6456, so that the lowermost partition plate 6456 moves upward to hold up the magnetic core 4, and the lowermost partition plate 6456 is spaced from the socket 6301.

[0060] In an embodiment, continue to refer to Figure 4 and Figure 10 , a column 62 is fixedly arranged on the base 61, and a plurality of the material rods 63 are circumferentially distributed on the circumference side of the column 62. A material blocking component 64 is arranged at one end of the column 62 away from the base 61. The material blocking component 64 includes a baffle 643, and the upper end of the material rod 63 abuts against the baffle 643, so as to block the upper end of the material rod 63, and avoid the base 61 from tipping over when the material supporting mechanism 6 is taken out of the furnace body 11, resulting in the magnetic core 4 falling off from the material rod 63 and scattering everywhere;

[0061] A cylindrical cavity is formed in the material rod 63, and an abutting component is arranged in the cylindrical cavity of the material rod 63. The abutting component is used for abutting against the radial inner wall of the partition plate 6456, so that there is a spaced arrangement between the radial inner wall of the partition plate 6456 and the side wall of the material rod 63. So that the hot air flow in the furnace body 11 can pass through the spaced gap between the radial inner wall of the partition plate 6456 and the side wall of the material rod 63, and the hot air flow fills the position near the inner side wall of the material rod 63 of the magnetic core 4, realizing uniform heating of the magnetic core 4.

[0062] Exemplarily, continue to refer to Figure 4 , Figure 5 and Figure 10, the material blocking assembly 64 further includes a knob 641, a screw 642 and a limit block 644. The output end of the knob 641 is fixedly connected with a pressing plate. A screw 642 is fixedly connected to the side of the pressing plate away from the knob 641. The screw 642 is threadedly connected to the inner cavity at the upper end of the column 62. The baffle 643 is clamped between the pressing plate and the column 62. A limit block 644 is fixedly connected to the side of the baffle 643 away from the knob 641. A limit groove 6441 is formed in the side of the upper end of the column 62. The limit block 644 is in limit abutment with the column 62 through the limit groove 6441.

[0063] Exemplarily, continue to refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 , the abutting component includes an abutting block 645, a guide rod 6451, a second connecting rod 6452, an inner side plate 6453, an outer side plate 6455 and a second spring 6459. The guide rod 6451 stands in the barrel cavity of the material rod 63. The upper end of the guide rod 6451 is fixedly connected with an abutting block 645. The side of the guide rod 6451 is rotatably connected with a second connecting rod 6452. The end of the second connecting rod 6452 away from the guide rod 6451 is rotatably connected with an inner side plate 6453. An outer side plate 6455 is fixedly connected to the side of the inner side plate 6453 away from the guide rod 6451 through a fixing block 6454. A second spring 6459 is arranged between the inner side plate 6453 and the inner wall of the barrel cavity of the material rod 63. One end of the second spring 6459 is fixedly connected with the inner side plate 6453, and the other end of the second spring 6459 is fixedly connected with the inner wall of the barrel cavity of the material rod 63. A through groove 631 is formed in the side of the barrel cavity of the material rod 63. The axial inner wall of the partition plate 6456 is embedded with a ball 6458. When the baffle 643 abuts against the upper end of the material rod 63, the baffle 643 abuts against the abutting block 645, and as Figure 8 and Figure 9 shown, the inner side plate 6453 is displaced outside the material rod 63 through the through groove 631 and abuts against the ball 6458.

[0064] In the above embodiment, the baffle plate 643 is placed on the top of the column 62, and the baffle plate 643 and the column 62 are axially limited by the limiting constraints of the limiting block 644 and the limiting groove 6441. When the screw rod 642 passes through the baffle plate 643 and is threadedly connected with the upper end inner cavity of the column 62, the pressure plate presses down the baffle plate 643 during the process of tightening the screw rod 642 by the knob 641, so that the baffle plate 643 moves down until the baffle plate 643 abuts against the top surface of the column 62, and the baffle plate 643 abuts against the abutment block 645, so that the guide rod 6451 moves down. The inner plate 6453 is further driven to move outward through the second connecting rod 6452, so that the outer plate 6455 is shifted to the outside of the material rod 63 through the through groove 631 and abuts against the ball 6458. Therefore, under the constraint of multiple outer plates 6455, the partition 6456 is corrected until the axis line of the partition 6456 is consistent with the axis line of the material rod 63, so that the inner wall of the partition 6456 and the side wall of the material rod 63 are evenly spaced, so that when the partition 6456 is lifted, it rolls and abuts against the outer plate 6455 with the help of the ball 6458, thereby reducing the upward resistance of the partition 6456.

[0065] For example, see Figure 12 A side of the material rod 63 away from the column 62 is provided with a secondary rod, which is installed on the base 61 through a corresponding socket 6301. The number of the secondary rod is at least one, and a distance adjustment component 607 is provided at the position corresponding to the secondary rod on the swing rod 605. Thus, the number of preparations for a single magnetic field heat treatment of the magnetic core 4 can be increased.

[0066] It should be noted that, please continue to refer to Figure 10 and Figure 11 A clearance groove 621 is opened on the lower end side of the column 62, so that the driving gear 601 is set in the inner cavity of the column 62, and the transition gear 602 is also set inside, and the driven gear 603 is connected to the main shaft 604 located outside the column 62 through the clearance groove 621.

[0067] In another embodiment, the present invention further provides a method for preparing a high magnetic permeability nanocrystalline magnetic core, wherein the magnetic core 4 is prepared using the above-mentioned high magnetic permeability nanocrystalline magnetic core preparation device, comprising the following steps:

[0068] S1. Put a plurality of magnetic cores 4 to be heat-treated and a plurality of partitions 6456 on the material rod 63, and partitions 6456 are provided above and below the magnetic cores 4, wherein the number of the magnetic cores 4 is consistent with the number of the swing rods 605 on one side of the material rod 63;

[0069] S2. Install the baffle 643 on the column 62. The baffle 643 abuts against the material rod 63 and the abutting block 645. Through the sequential transmission of the guide rod 6451, the second connecting rod 6452, the inner plate 6453 and the outer plate 6455, the outer plate 6455 is displaced to the outside of the material rod 63 and abuts against the ball 6458 on the partition plate 6456, so that the axis line of the partition plate 6456 is consistent with the axis line of the material rod 63, and there is a spaced arrangement between the axial inner wall of the partition plate 6456 and the material rod 63;

[0070] S3. Place the material supporting mechanism 6 loaded with multiple magnetic cores 4 in the tray 5, and place the tray 5 in the magnetic field area in the furnace body 11;

[0071] S4. Through the drive of the positioning drive member, the swing rods 605 on both sides of the material rod 63 swing from the initial position to the end position respectively, so that the abutting rod 6073 in the distance adjustment assembly 607 enters the position between adjacent partition plates 6456, and abuts against the upper partition plate 6456 to push the upper partition plate 6456 to move away from the base 61;

[0072] S5. Through the continuous drive of the positioning drive member, in the direction along the extension direction of the material rod 63 and away from the base 61, the multiple swing rods 605 swing to the end position in sequence, so that the multiple magnetic cores 4 are lifted in sequence;

[0073] S6. Start the heater 13 to heat the magnetic cores 4 in the furnace body 11, and generate a magnetic field in the magnetic field area through the magnetic field generating assembly.

[0074] The magnetic core 4 prepared by the above method can make the magnetic core 4 receive the heat conduction of uniform hot air flow when receiving magnetic field heat treatment, so that the magnetic core 4 is heated at a constant temperature and filled in the magnetic field. Through the combined action of heat treatment and external magnetic field, the magnetic properties of the magnetic core 4, especially the magnetic permeability, can be optimized.

[0075] It should be noted that when the preparation equipment of the high magnetic permeability nanocrystalline magnetic core is in use, a plurality of partition plates 6456 and a plurality of magnetic cores 4 are respectively sleeved on the material rod 63, so that partition plates 6456 are arranged above and below the magnetic core 4. Place the baffle 643 on the top of the column 62, and axially limit the baffle 643 and the column 62 through the limit constraint of the limit block 644 and the limit groove 6441. During the process of tightening the screw 642 through the knob 641, the pressing plate presses down the baffle 643, so that the baffle 643 moves down until it abuts against the top surface of the column 62, sealing the upper end of the material rod 63. At the same time, through the abutment of the baffle 643 against the abutting block 645, the guide rod 6451 moves down, and the inner plate 6453 is driven to move outward through the second connecting rod 6452, so that the inner plate 6453 abuts against the ball 6458, realizing uniform spacing between the inner side wall of the partition plate 6456 and the side wall of the material rod 63;

[0076] Next, driven by the motor, through the sequential meshing transmission of the driving gear 601, the intermediate gear 602, and the driven gear 603, during the process of the swing rod 605 swinging from the initial position to the terminal position, the arc convex surface of the abutting rod 6073 abuts against and squeezes into the position between adjacent partitions 6456 with the wedge surface of the partition 6456, separating the partitions 6456, and further, with the abutting rod 6073 rotating clockwise in the Figure 13 indicated direction, causing the upper partition 6456 to further lift all the magnetic cores 4 above the upper partition 6456 and the partition 6456, realizing a further increase in the interval between adjacent partitions 6456. Thus, after all the swing rods 605 swing to the terminal position in sequence, all the magnetic cores 4 are successively lifted and arranged at intervals;

[0077] Then, place the blank supporting mechanism 6 on the tray 5 in the furnace body 11, close the door body 12, and control the heater 13 to work by means of the controller 3 to control the heating of the space in the furnace body 11. Through the above-mentioned interval distribution setting of the magnetic cores 4, the hot air flow in the furnace body 11 can pass through the gaps between the partitions 6456 and pass through the through holes 6457 to closely contact the magnetic cores 4, and the hot air flow passes through the interval gaps between the radial inner walls of the partitions 6456 and the side walls of the material rod 63, so that the position of the magnetic cores 4 adjacent to the inner side wall of the material rod 63 is filled with hot air flow, realizing the uniform heating of the whole magnetic cores 4, solving the problem that the existing magnetic cores 4 are stacked closely together, resulting in temperature deviation at different positions of the magnetic cores, and controlling the magnetizing component to work by means of the controller 3, so that the magnetic cores 4 in the furnace body 11 are heated at a constant temperature and filled in the magnetic field. Through the combined action of heat treatment and external magnetic field, the magnetic properties of the magnetic cores 4, especially the magnetic permeability, can be optimized.

[0078] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A preparation device for a nanocrystalline magnetic core with high magnetic permeability, characterized in that, Including: A raw magnetic heat treatment mechanism (1) for performing magnetic field heat treatment on a magnetic core (4) to be processed; A material supporting mechanism (6) disposed on a tray (5). The material supporting mechanism (6) includes a base (61), a material rod (63) and a spacing component (60). A material rod (63) is disposed on a side of the base (61) away from the tray (5). A partition plate (6456) and a magnetic core (4) to be heat treated are sleeved on the material rod (63), and partition plates (6456) are disposed on both the upper and lower sides of the magnetic core (4). The spacing component (60) is disposed on the base (61), and the spacing component (60) includes a swing driving member, a swing rod (605) and a distance adjusting component (607). An output end of the swing driving member is in transmission connection with the swing rod (605). Among them, the paired swing rods (605) are symmetrically distributed on both sides of the material rod (63), and the number of swing rods (605) on one side of the material rod (63) is the same as the number of magnetic cores (4). A distance adjusting component (607) is respectively disposed on a side of each swing rod (605) facing the material rod (63), and an output end of the distance adjusting component (607) is disposed on a side away from the swing rod (605); When the swing rod (605) swings from an initial position to a termination position under the drive of the swing driving member, an output end of the distance adjusting component (607) extends into a position between adjacent partition plates (6456) and abuts against the upper partition plate (6456) to push the upper partition plate (6456) to move away from the base (61). Among them, in a direction along the extension direction of the material rod (63) and away from the base (61), a plurality of the swing rods (605) swing to the termination position in sequence, so that a plurality of magnetic cores (4) are lifted in sequence; The distance adjusting component (607) includes a sleeve (6071), a sliding rod (6076), a first spring (6075), a wedge block (6074), an abutting rod (6073) and a first connecting rod (6072). A sleeve (6071) is fixedly disposed on a side of the swing rod (605) facing the material rod (63). One end of the sliding rod (6076) is slidably connected to an inner cavity of the sleeve (6071), and the other end of the sliding rod (6076) penetrates out of the sleeve (6071) and is fixedly connected to a wedge block (6074). A second spring (6459) is sleeved on the sliding rod (6076). An outer end of the wedge block (6074) is rotatably connected to an abutting rod (6073). An outer side of the abutting rod (6073) facing the material rod (63) is an arc convex surface. An inner side of the abutting rod (6073) is rotatably connected to a first connecting rod (6072), and one end of the first connecting rod (6072) away from the abutting rod (6073) is rotatably connected to the sleeve (6071); One end edge position of the partition plate (6456) away from the abutted magnetic core (4) is provided with a wedge surface. When the swing rod (605) is in the terminal position, the wedge block (6074) is in frictional abutment with the wedge surface of the partition plate (6456) located below, and the arc convex surface of the abutment rod (6073) is in frictional abutment with the wedge surface of the partition plate (6456) located above.

2. The preparation device of a high magnetic permeability nanocrystalline magnetic core according to claim 1, characterized in that, The magnetization heat treatment mechanism (1) includes a furnace body (11) and a heater (13). A magnetization assembly is arranged in the furnace body (11). The tray (5) is placed in the furnace body (11), and the tray (5) is located in the magnetic field area of the magnetization assembly. The heater (13) is arranged in the furnace body (11) and is used to heat the magnetic field area in the furnace body (11).

3. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 2, characterized in that, The swing position driving part includes a driving gear (601), an intermediate gear (602), a driven gear (603) and a main shaft (604). The input end of the driving gear (601) is in transmission connection with the motor. The driving gear (601) meshes with and drives the intermediate gear (602). The driven gears (603) are arranged in pairs and mesh with each other between the paired driven gears (603). The intermediate gear (602) meshes with and drives one of the driven gears (603). The driven gear (603) is fixedly connected to the main shaft (604). One end of the main shaft (604) is rotatably connected to the base (61). A plurality of swing rods (605) are sleeved on the main shaft (604) on the side of the driven gear (603) away from the base (61), and a torsion spring is arranged at the sleeved part of the swing rod (605) and the main shaft (604). A limiting rod (606) is arranged on the side of the swing rod (605) facing the material rod (63). The limiting rod (606) is fixedly arranged on the base (61). When the swing rod (605) is in the initial position, the swing rod (605) abuts against the limiting rod (606). Among them, the number of the intermediate gears (602) is multiple, and the multiple intermediate gears (602) are respectively meshed with and driven by the driving gear (601). The number of the intermediate gears (602) is the same as the number of the material rods (63).

4. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 3, characterized in that, A through hole (6457) is formed in the partition plate (6456). Along the axial line direction of the material rod (63), the through hole (6457) penetrates through the partition plate (6456). Along the radial direction of the partition plate (6456), the width dimension value of the through hole (6457) is greater than the width dimension value of the magnetic core (4).

5. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 4, characterized in that, A socket (6301) is arranged on the side of the base (61) away from the tray (5). The lower end of the material rod (63) is installed on the base (61) through the socket (6301). Among them, when the swing rod (605) is in the initial position, the lower end surface of the lowermost partition plate (6456) on the material rod (63) abuts against the upper end surface of the socket (6301), and there is a spaced arrangement between the edge position of the lower end surface of the lowermost partition plate (6456) and the base (61).

6. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 5, characterized in that, A column (62) is fixedly arranged on the base (61), and a plurality of the material rods (63) are circumferentially distributed on the circumferential side of the column (62). One end of the column (62) far from the base (61) is provided with a material blocking assembly (64), and the material blocking assembly (64) includes a baffle (643). The upper end of the material rod (63) abuts against the baffle (643). A cylindrical cavity is formed in the material rod (63), and an abutting component is arranged in the cylindrical cavity of the material rod (63). The abutting component is used for abutting against the radial inner wall of the partition plate (6456), so that a gap is arranged between the radial inner wall of the partition plate (6456) and the side wall of the material rod (63).

7. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 6, characterized in that, The material blocking assembly (64) further includes a knob (641), a screw rod (642) and a limiting block (644). The output end of the knob (641) is fixedly connected with a pressing plate. A screw rod (642) is fixedly connected to the side of the pressing plate far from the knob (641). The screw rod (642) is in threaded connection with the inner cavity at the upper end of the column (62). The baffle (643) is clamped between the pressing plate and the column (62). A limiting block (644) is fixedly connected to the side of the baffle (643) far from the knob (641). A limiting groove (6441) is formed in the side part at the upper end of the column (62). The limiting block (644) is in limiting abutment with the column (62) through the limiting groove (6441).

8. The manufacturing equipment of a high magnetic permeability nanocrystalline magnetic core according to claim 7, characterized in that, The abutting component includes an abutting block (645), a guide rod (6451), a second connecting rod (6452), an inner side plate (6453), an outer side plate (6455) and a second spring (6459). The guide rod (6451) stands in the cylindrical cavity of the material rod (63), and the upper end of the guide rod (6451) is fixedly connected with the abutting block (645). The side part of the guide rod (6451) is rotatably connected with the second connecting rod (6452). One end of the second connecting rod (6452) far from the guide rod (6451) is rotatably connected with the inner side plate (6453). The outer side plate (6455) is fixedly connected to the side of the inner side plate (6453) far from the guide rod (6451) through a fixing block (6454). A second spring (6459) is arranged between the inner side plate (6453) and the inner wall of the cylindrical cavity of the material rod (63). One end of the second spring (6459) is fixedly connected with the inner side plate (6453), and the other end of the second spring (6459) is fixedly connected with the inner wall of the cylindrical cavity of the material rod (63). A through groove (631) is formed in the side part of the cylindrical cavity of the material rod (63). Ball bearings (6458) are embedded in the axial inner wall of the partition plate (6456). When the baffle (643) abuts against the upper end of the material rod (63), the baffle (643) abuts against the abutting block (645), and the inner side plate (6453) is displaced out of the material rod (63) through the through groove (631) and abuts against the ball bearings (6458).

9. A preparation method of a nanocrystalline magnetic core with high magnetic permeability, characterized in that, Preparing a magnetic core by using the preparation equipment according to claim 8, comprising the following steps: S1. A plurality of magnetic cores (4) to be heat treated and a plurality of partitions (6456) are sleeved on a material rod (63), and partitions (6456) are provided above and below the magnetic cores (4), wherein the number of the magnetic cores (4) is consistent with the number of the swing rods (605) on one side of the material rod (63); S2, installing the baffle plate (643) on the column (62), abutting the material rod (63) and the abutting block (645) through the baffle plate (643), and sequentially driving the guide rod (6451), the second connecting rod (6452), the inner plate (6453) and the outer plate (6455) so that the outer plate (6455) is shifted to the outside of the material rod (63) and abuts against the ball (6458) on the partition plate (6456), so that the axis of the partition plate (6456) is consistent with the axis of the material rod (63), and the axial inner wall of the partition plate (6456) is spaced from the material rod (63); S3, placing a support mechanism (6) loaded with a plurality of magnetic cores (4) in a tray (5), and placing the tray (5) in a magnetic field region in a furnace body (11); S4, by driving the swing driving member, the swing rods (605) on both sides of the material rod (63) are swung from the initial position to the end position respectively, so that the abutting rod (6073) in the distance adjustment assembly (607) is inserted into the position between the adjacent partitions (6456), and abuts against the upper partition (6456) to push the upper partition (6456) upward to move toward the side away from the base (61); S5. By continuing to drive the swing driving member, the plurality of swing rods (605) swing in sequence to the end position along the extension direction of the material rod (63) and in the direction away from the base (61), so that the plurality of magnetic cores (4) are lifted in sequence; S6, starting the heater (13), heating the magnetic core (4) in the furnace body (11), and magnetizing the magnetic field region through the magnetizing component.

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