Preparation method and equipment of nanocrystalline magnetic core with high magnetic conductivity

Abstract

The invention discloses a preparation method and equipment of a high-magnetic-conductivity nanocrystalline magnetic core, and relates to the technical field of magnetic core manufacturing, the preparation equipment of the magnetic core comprises a magnetism generation heat treatment mechanism and a material supporting mechanism, and the magnetism generation heat treatment mechanism is used for conducting magnetic field heat treatment on the magnetic core; the material supporting mechanism arranged on the tray comprises a base, material rods and a spacing assembly, the material rods on the base are used for being connected with partition plates and magnetic cores to be subjected to heat treatment in a sleeved mode, the partition plates are arranged on the upper sides and the lower sides of the magnetic cores, swing rods arranged in pairs in the spacing assembly are symmetrically distributed on the two sides of the material rods, and the number of the swing rods on the single side of the material rods is consistent with the number of the magnetic cores. The output end of the distance adjusting assembly arranged on each swing rod is arranged far away from one side of the swing rod. When the plurality of swing rods swing from an initial position to an end position in sequence, the output end of the distance adjusting assembly extends into the position between the adjacent partition plates, so that the plurality of magnetic cores are supported in sequence; according to the magnetic core preparation equipment, the magnetic cores are prevented from being stacked closely, and uniform heating of the magnetic cores is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic core manufacturing, and specifically relates to a method and equipment for preparing a high magnetic permeability nanocrystalline magnetic core. Background Art

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

[0003] During the preparation process of high permeability nanocrystalline magnetic cores, the magnetic cores need to be heat treated to optimize the magnetic permeability of the nanocrystalline alloy material. Heat treatment requires the use of magnetic field heat treatment equipment. When the existing magnetic cores are subjected to magnetic field heat treatment, a heating structure is directly set inside the cover, and the magnetic core inside the cover is heated by thermal convection. When the magnetic core reaches the specified temperature, the heating is turned off. In order to increase the number of magnetic cores subjected to a single magnetic field heat treatment, multiple magnetic cores are stacked together or placed close together, resulting in temperature deviations at different positions of the magnetic cores, which affects the effect of the heat treatment and the stability of the magnetic core performance. Summary of the invention

[0004] The purpose of the present invention is to provide a method and equipment for preparing a nanocrystalline magnetic core with high magnetic permeability which has a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: In a first aspect, the present invention provides a device for preparing a high magnetic permeability nanocrystalline magnetic core, comprising: A magnetic heat treatment mechanism, which is used to perform magnetic field heat treatment on the magnetic core to be treated; A material supporting mechanism, the material supporting mechanism is arranged on a tray, the material supporting mechanism comprises a base, a material rod and a spacing assembly, the material rod is arranged on a side of the base away from the tray, the material rod is used to be sleeved with a partition and a magnetic core to be heat treated, and the upper and lower sides of the magnetic core are both provided with partitions, the spacing assembly is arranged on the base, the spacing assembly comprises a swing driving member, a rocker and a distance adjustment assembly, the output end of the swing driving member is transmission-connected with the rocker, wherein the rocker rods arranged in pairs are symmetrically distributed on both sides of the material rod, and the number of rocker rods on a single side of the material rod is consistent with the number of magnetic cores, each of the rocker rods is respectively provided with a distance adjustment assembly on the side facing the material rod, and the output end of the distance adjustment assembly is arranged away from the side of the rocker rod; When the swing rod swings from the initial position to the terminal position under the drive of the swing driving member, the output end of the distance adjusting component extends to the position between adjacent partitions, and abuts against the upper partition to push the upper partition toward the side away from the base, wherein, along the extension direction of the material rod and in the direction away from the base, multiple swing rods swing to the terminal position in turn, so that multiple magnetic cores are lifted up in turn.

[0006] As a further optimization scheme of the present invention, the magnetic heat treatment mechanism includes a furnace body and a heater, a 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 magnetic component, and the heater is arranged in the furnace body and is used to heat the magnetic field area in the furnace body.

[0007] As a further optimization scheme of the present invention, the swing driving member includes a driving gear, a transition gear, a driven gear and a main shaft, the input end of the driving gear is connected to the motor transmission, the driving gear meshes with the transition gear, the driven gears are arranged in pairs, the driven gears arranged in pairs are meshed and transmitted, and the transition gear is meshed and transmitted 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 side of the main shaft located away from the base, and a torsion spring is arranged at the sleeve connection portion of the swing rod and the main shaft, a limit rod is arranged on the side of the swing rod facing the material rod, the limit rod is fixedly arranged on the base, and when the swing rod is in the end position, the swing rod abuts against the limit rod; There are multiple transition gears, and the multiple transition gears are respectively meshed with the driving gears for transmission, and the number of the transition gears is consistent with the number of the material rods.

[0008] As a further optimization scheme of the present invention, the distance adjustment assembly includes a sleeve, a sliding rod, a first spring, a wedge block, an abutment rod and a first connecting rod, the side of the swing rod facing the material rod is fixedly provided with a sleeve, one end of the sliding rod is slidably connected in the inner cavity of the sleeve, the other end of the sliding rod passes through the outside of the sleeve and is fixedly connected with the wedge block, the sliding rod is sleeved with a second spring, the outer end of the wedge block is rotatably connected with the abutment rod, the outer side of the abutment rod facing the material rod is an arc convex surface, the inner side of the abutment rod is rotatably connected with the first connecting rod, and the end of the first connecting rod away from the abutment rod is rotatably connected to the sleeve; A wedge surface is provided at the edge of one end of the partition away from the abutting magnetic core. When the rocker arm is at the end position, the wedge block frictionally abuts against the wedge surface of the partition below, and the arc convex surface of the abutting rod frictionally abuts against the wedge surface of the partition above.

[0009] As a further optimization scheme of the present invention, a through hole is opened on the partition, and the through hole passes through the partition along the axial direction of the material rod, and along the radial direction of the partition, the width dimension value of the through hole is greater than the width dimension value of the magnetic core.

[0010] As a further optimization scheme of the present invention, a socket is provided on the side of the base away from the tray, and the lower end of the material rod is installed on the base through the socket, wherein when the rocker arm is in the initial position, the lower end surface of the partition at the lowest end on the material rod abuts against the upper end surface of the socket, and the edge position of the lower end surface of the partition at the lowest end is spaced apart from the base.

[0011] As a further optimization scheme of the present invention, a column is fixedly arranged on the base, a plurality of the material rods are circumferentially distributed on the peripheral side of the column, a material blocking assembly is arranged at one end of the column away from the base, the material blocking assembly includes a baffle, and the upper end of the material rod abuts against the baffle; A barrel cavity is provided in the material rod, and a resist component is arranged in the barrel cavity of the material rod. The resist component is used to resist the radial inner wall of the partition so that the radial inner wall of the partition is spaced from the side wall of the material rod.

[0012] As a further optimization scheme of the present invention, the material blocking assembly also includes a knob, a screw and a limit block. The output end of the knob is fixedly connected to a pressure plate, and the side of the pressure plate away from the knob is fixedly connected to the screw. The screw is threadedly connected to the upper end inner cavity of the column. The baffle plate is clamped between the pressure plate and the column, and the side of the baffle plate away from the knob is fixedly connected to the limit block. A limit groove is provided on the upper end side of the column, and the limit block is limitedly abutted against the column through the limit groove.

[0013] As a further optimization scheme of the present invention, the abutment assembly includes an abutment block, a guide rod, a second connecting rod, an inner plate, an outer plate, and a second spring, the guide rod being erected in the barrel cavity of the material rod, and the upper end of the guide rod is fixedly connected to the abutment block, the side of the guide rod is rotatably connected to the second connecting rod, the end of the second connecting rod away from the guide rod is rotatably connected to the inner plate, the side of the inner plate away from the guide rod is fixedly connected to the outer plate through a fixing block, and 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 opened on the side of the barrel cavity of the material rod, and a ball is embedded in the axial inner wall of the partition, when the baffle plate abuts against the upper end of the material rod, the baffle plate abuts against the abutment block, and the inner plate is shifted to the outside of the material rod through the through groove and abuts against the ball.

[0014] In a second aspect, the present invention further provides a method for preparing a high magnetic permeability nanocrystalline magnetic core, using the above-mentioned high magnetic permeability nanocrystalline magnetic core preparation device to prepare a magnetic core, comprising the following steps: S1. Put a plurality of magnetic cores to be heat treated and a plurality of partitions on the material rod, and partitions are provided above and below the magnetic cores, wherein the number of the magnetic cores is consistent with the number of the swing rods on one side of the material rod; S2, installing the baffle on the column, abutting the material rod and the abutting block through the baffle, and sequentially transmitting the guide rod, the second connecting rod, the inner plate and the outer plate, so that the outer plate is shifted to the outside of the material rod and abuts against the ball on the partition, so that the axis of the partition is consistent with the axis of the material rod, and the axial inner wall of the partition is spaced from the material rod; S3, placing a support mechanism loaded with a plurality of magnetic cores in a tray, and placing the tray in a magnetic field area in the furnace body; S4, through the driving of the swing driving member, the swing rods on both sides of the material rod are swung from the initial position to the end position respectively, so that the abutting rod in the distance adjustment assembly is inserted into the position between the adjacent partitions, and abuts against the upper partition to push the upper partition upward to move toward the side away from the base; S5, through the continued driving of the swing driving member, the plurality of swing rods are swung to the end position in sequence along the extension direction of the material rod and in the direction away from the base, so that the plurality of magnetic cores are lifted up in sequence; S6. Start the heater to heat the magnetic core in the furnace body, and magnetize the magnetic field area through the magnetization component.

[0015] The present invention has at least the following beneficial effects: a method and device for preparing a high magnetic permeability nanocrystalline magnetic core disclosed in the present invention, the preparation of the high magnetic permeability nanocrystalline magnetic core includes a magneto-thermal treatment mechanism and a support mechanism, the guide rod is moved downward by means of the abutment of the abutment block by the baffle in the support mechanism, and the inner plate is driven to move outward by the second connecting rod, so that the inner plate abuts against the ball, and the spacing between the inner side wall of the partition and the side wall of the material rod is uniform, so that when the magnetic core is placed in the furnace body for magneto-thermal treatment, the hot air flow can contact the magnetic core at a close distance through the gap between the partition and the material rod, so that the magnetic core is heated evenly; Moreover, with the help of the swing drive, the paired swing rods are swung from the initial position to the end position, so that the abutment rods are extended to the position between adjacent partitions and push up the partition located above, so that the gap between adjacent partitions is increased. By swinging multiple pairs of swing rods to the end position in sequence, multiple magnetic cores are lifted up and arranged at intervals in sequence, so that when the magnetic cores are subsequently placed in the furnace body for magnetic heat treatment, the hot air flow can come into close contact with the axial end face of the magnetic core through the gap between adjacent partitions and the through holes of the partitions, so that the magnetic cores are heated evenly, thereby solving the problem of temperature deviation at different positions of the magnetic cores caused by the existing magnetic cores being stacked closely together. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the magnetic heat treatment mechanism of the present invention; Figure 3It is a schematic diagram of the top view of the structural distribution when multiple supporting mechanisms are placed on the tray of the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of the tray and the material supporting mechanism of the present invention; Figure 5 The present invention Figure 4 Enlarged view of point A in the middle; Figure 6 The present invention Figure 4 Enlarged view of point B in the middle; Figure 7 The present invention Figure 4 Enlarged view of point C in the middle; Figure 8 It is a schematic diagram of the top view of the structure of the material rod, the position adjustment component, the magnetic core and the partition in the assembled state of the present invention; Fig. 9 The present invention Figure 8 Enlarged view of point D in the middle; Fig.10 It is a partial structural schematic diagram of the material rod, base and column of the present invention; Fig.11 It is a partial structural schematic diagram of the positioning drive component of the present invention; Fig.12 is a partial top view of the structure of the spacer assembly of the present invention when it is in the initial position; Fig.13 It is a partial cross-sectional structural schematic diagram of the distance adjustment assembly of the present invention; Fig.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; Fig.15 The present invention Fig.14 Enlarged view of point E in the middle.

[0017] 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

[0018] 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.

[0019] In one embodiment, if Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the present invention provides a high magnetic permeability nanocrystalline magnetic core preparation device, comprising: A magnetic heat treatment mechanism 1, wherein the magnetic heat treatment mechanism 1 is used to perform magnetic field heat treatment on a magnetic core 4 to be treated; The material supporting mechanism 6 is arranged on the tray 5, and the material supporting mechanism 6 includes a base 61, a material rod 63 and a spacing component 60. The material rod 63 is arranged on the side of the base 61 away from the tray 5, and the material rod 63 is used to be sleeved with a partition 6456 and a magnetic core 4 to be heat-treated, and the upper and lower sides of the magnetic core 4 are both provided with a partition 6456. The spacing component 60 is arranged on the base 61, and the spacing component 60 includes a swing driving member, a swing rod 605 and a distance adjustment component 607. The output end of the swing driving member is transmission-connected with the swing rod 605, wherein the swing rods 605 arranged in pairs are symmetrically distributed on both sides of the material rod 63, as shown in FIG. Figure 4 As shown, the number of the swing rods 605 on one side of the material rod 63 is consistent with the number of the magnetic cores 4, and each of the swing rods 605 is provided with a distance adjustment component 607 on one side facing the material rod 63, and the output end of the distance adjustment component 607 is provided away from the side of the swing rod 605; When the rocker arm 605 swings from the initial position to the final position under the drive of the swing driving member, the output end of the distance adjustment component 607 extends to the position between adjacent partitions 6456, and abuts against the upper partition 6456 to push the upper partition 6456 toward the side away from the base 61, wherein along the extension direction of the material rod 63 and in the direction away from the base 61, multiple rocker arms 605 swing to the final position in turn, so that multiple magnetic cores 4 are lifted up in turn.

[0020] For example, see Figure 1 and Figure 2 The magneto-thermal treatment mechanism 1 includes a furnace body 11 and a heater 13. A magneto-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 magneto-generating component. The heater 13 is arranged in the furnace body 11 and is used to heat 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 placed in the furnace body 11 through the tray 5, and the working state of the magneto-generating component and the working state of the heater 13 are controlled by the controller 3, so that under the magnetization operation of the magneto-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 external magnetic field, the magnetic properties of the magnetic core 4, especially the magnetic permeability, can be optimized.

[0021] In the above embodiment, multiple swing rods 605 are swung to the end position in sequence, so that multiple magnetic cores 4 are lifted up in sequence. For example, along the extension direction of the material rod 63 and in the direction away from the base 61, the output end of the distance adjustment component 607 on the first swing rod 605 abuts against the partition 6456 below the first magnetic core 4, so that the first magnetic core 4 and all the magnetic cores 4 and the partition 6456 above are moved up synchronously. After the first swing rod 605 swings to the end position, the second swing rod 605 also drives the corresponding distance adjustment component 607 to swing to the distance adjustment component 607 on the second swing rod 605. The output end abuts against the partition 6456 below the second magnetic core 4, so that the second magnetic core 4 and all the magnetic cores 4 and partition 6456 above move up synchronously until the second swing rod 605 swings to the end position, and so on, until all the swing rods 605 swing to the end position. At this time, the partitions 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 surrounding side of the magnetic core 4, so that the whole magnetic core 4 is evenly heated, which solves the problem of temperature deviation at different positions of the magnetic core 4 caused by the existing magnetic cores 4 being stacked closely together.

[0022] It should be noted that if Figure 1 and Figure 2As shown, a ventilation box 2 is provided on one side of the furnace body 11, and the blowing end of the ventilation box 2 is connected with the inner cavity of the furnace body 11, and blows air to the hot air flow in the furnace body 11 to make it circulate, while the exhaust end of the ventilation box 2 is connected with the inner cavity of the furnace body 11, so that when the magnetic core 4 needs to be cooled, the hot air flow in the furnace body 11 is exhausted by the exhaust of the ventilation box 2, so as to avoid heat accumulation in a high temperature environment, which causes the heat treatment temperature requirement of the magnetic core 4 to exceed the standard.

[0023] For example, see Fig.11 and Fig.12 The positioning drive member includes a driving gear 601, a transition gear 602, a driven gear 603 and a main shaft 604. The input end of the driving gear 601 is connected to the motor (not shown in the figure). The driving gear 601 is meshed with the transition gear 602. The rotating shaft of the transition gear 602 is rotatably connected to the base 61. The driven gears 603 are arranged in pairs. The paired driven gears 603 are meshed with each other, and the transition gear 602 is meshed with one of the driven gears 603, so that the rotation directions of the two driven gears 603 are opposite. 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 side of the main shaft 604 located at the driven gear 603 away from the base 61, and a torsion spring is provided at the sleeved portion of the swing rod 605 and the main shaft 604. A limit rod 606 is provided on the side of the swing rod 605 facing the material rod 63, and the limit rod 606 is fixedly arranged on the base 61. When the swing rod 605 is located at the end position, the swing rod 605 abuts against the limit rod 606, so that the main shaft 604 drives the plurality of swing rods 605 to rotate in a direction close to the end position. Under the action of the torsion spring, after one of the swing rods 605 swings to the end position, the adjacent swing rod 605 located above the swing rod 605 can continue to rotate with the main shaft 604 in a direction close to the end position. There are multiple transition gears 602, and the multiple transition gears 602 are respectively meshed with the driving gear 601 for transmission. The number of the transition gears 602 is consistent with the number of the material rods 63. Fig.11 It is indicated that the number of transition gears 602 is four, which means that the number of material rods 63 is also four. In other embodiments, the number of transition gears 602 is five, six, seven, etc., and can be set accordingly according to the number of material rods 63, which is not limited here.

[0024] For example, see Fig.12 , Fig.13 and Fig.14, the distance adjustment component 607 includes a sleeve 6071, a slide bar 6076, a first spring 6075, a wedge 6074, an abutting rod 6073 and a first connecting rod 6072, the sleeve 6071 is fixedly provided on the side of the swing rod 605 facing the material rod 63, one end of the slide bar 6076 is slidably connected in the inner cavity of the sleeve 6071, the other end of the slide bar 6076 penetrates to the outside of the sleeve 6071 and is fixedly connected with the wedge 6074, the slide bar 6076 is sleeved with a second spring 6459, the outer end of the wedge 6074 is rotatably connected with the abutting rod 6073, the abutting rod 6073 is an arc convex surface facing the outside of the material rod 63, the inner side of the abutting rod 6073 is rotatably connected with the first connecting rod 6072, and the end of the first connecting rod 6072 away from the abutting rod 6073 is rotatably connected to the sleeve 6071; The partition plate 6456 is provided with a wedge surface at an edge position of one end away from the abutting magnetic core 4. Fig.14 As shown, the wedge surface of the partition 6456 is shaped like a chamfered surface, such as Fig.13 As shown, when the rocker arm 605 is in the initial position, under the elastic force of the second spring 6459, the inclination angle of the abutment rod 6073 is small, and the wedge block 6074 is located at the outermost end; when the rocker arm 605 swings in the direction close to the material rod 63, the arc convex surface of the abutment rod 6073 abuts against the wedge surface of the partition plate 6456 and squeezes and extends into the position between the adjacent partition plates 6456. At this time, the wedge block 6074 frictionally abuts against the wedge surface of the partition plate 6456 located below, so that the partition plates 6456 are separated. Then, as the rocker arm 605 continues to swing, the sliding rod 6076 slides relatively toward the inside of the sleeve 6071. Under the squeezing 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 abutment rod 6073 moves toward Fig.13 The convex arc surface of the abutting rod 6073 further squeezes the partition 6456 above, so that the partition 6456 above the partition 6456 further lifts all the magnetic cores 4 and the partition 6456 above the partition 6456, and the interval between adjacent partitions 6456 is further increased, so that the hot air flow is evenly diffused to the peripheral side of the magnetic core 4, so that the whole magnetic core 4 is evenly heated, that is, Fig.14 and Fig.15 As shown, when the rocker rod 605 is located at the end position, the wedge block 6074 frictionally abuts against the wedge surface of the partition plate 6456 located below, and the arc convex surface of the abutment rod 6073 frictionally abuts against the wedge surface of the partition plate 6456 located above.

[0025] For example, see Figure 6 and Figure 8The partition 6456 is provided with a through hole 6457, which penetrates the partition 6456 along the axis of the material rod 63, and the width of the through hole 6457 along the radial direction of the partition 6456 is greater than the width of the magnetic core 4. After the partition 6456 holds up the magnetic core 4, the hot air flows through the through hole 6457 and contacts the axial end face of the magnetic core 4 at a close distance, so that the magnetic core 4 is heated evenly, and when the temperature is lowered later, the heat dissipation effect of the magnetic core 4 can also be improved with the help of the through hole 6457.

[0026] For example, see Figure 4 and Fig.10 , a plug-in seat 6301 is provided 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 plug-in seat 6301, wherein, when the swing rod 605 is at the initial position, the lower end surface of the partition 6456 at the lowest end of the material rod 63 abuts against the upper end surface of the plug-in seat 6301, and the lower end surface edge position of the partition 6456 at the lowest end is spaced from the base 61. When the swing rod 605 at the lowest end swings to the terminal position, the abutting rod 6073 on the swing rod 605 can extend into the lower end area of ​​the partition 6456 at the lowest end and abut against the partition 6456 at the lowest end, so that the partition 6456 at the lowest end moves up to hold up the magnetic core 4, so that the partition 6456 at the lowest end is spaced from the plug-in seat 6301.

[0027] In one embodiment, continue to refer to Figure 4 and Fig.10 A column 62 is fixedly arranged on the base 61, and a plurality of material rods 63 are circumferentially distributed on the peripheral side of the column 62. A material blocking assembly 64 is arranged at one end of the column 62 away from the base 61. The material blocking assembly 64 includes a baffle 643. The upper end of the material rod 63 abuts against the baffle 643, thereby blocking the upper end of the material rod 63 to prevent the base 61 from tipping over and causing the magnetic core 4 to detach from the material rod 63 and scatter on the ground when the supporting mechanism 6 is taken out of the furnace body 11; The material rod 63 has a cylindrical cavity, and a butt assembly is arranged in the cylindrical cavity of the material rod 63, and the butt assembly is used to butt against the radial inner wall of the partition 6456, so that the radial inner wall of the partition 6456 and the side wall of the material rod 63 are spaced apart. The hot air flow in the furnace body 11 can pass through the gap between the radial inner wall of the partition 6456 and the side wall of the material rod 63, so that the inner side wall of the magnetic core 4 adjacent to the material rod 63 is filled with hot air flow, so that the magnetic core 4 is heated evenly.

[0028] For example, see Figure 4 , Figure 5 and Fig.10The material blocking assembly 64 also includes a knob 641, a screw 642 and a limit block 644. The output end of the knob 641 is fixedly connected to a pressure plate, and the side of the pressure plate away from the knob 641 is fixedly connected to the screw 642. The screw 642 is threadedly connected to the upper end inner cavity of the column 62. The baffle plate 643 is clamped between the pressure plate and the column 62, and the side of the baffle plate 643 away from the knob 641 is fixedly connected to the limit block 644. A limit groove 6441 is provided on the upper end side of the column 62, and the limit block 644 is limitedly abutted against the column 62 through the limit groove 6441.

[0029] For example, see Figure 5 , Figure 6 , Figure 7 and Figure 8 The abutment assembly includes an abutment block 645, a guide rod 6451, a second connecting rod 6452, an inner plate 6453, an outer plate 6455 and a second spring 6459. The guide rod 6451 is erected in the barrel cavity of the material rod 63, and the upper end of the guide rod 6451 is fixedly connected to the abutment block 645. The side of the guide rod 6451 is rotatably connected to the second connecting rod 6452. The end of the second connecting rod 6452 away from the guide rod 6451 is rotatably connected to the inner plate 6453. The side of the inner plate 6453 away from the guide rod 6451 is fixedly connected to the inner plate 6453. The fixed block 6454 is fixedly connected with the outer plate 6455, and a second spring 6459 is arranged between the inner 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 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 provided on the side of the barrel cavity of the material rod 63, and a ball 6458 is embedded in the axial inner wall of the partition plate 6456, when the baffle plate 643 abuts against the upper end of the material rod 63, the baffle plate 643 abuts against the abutment block 645, and as shown in FIG. Figure 8 and Fig. 9 As shown, the inner plate 6453 is displaced to the outside of the material rod 63 through the through slot 631 and abuts against the ball 6458.

[0030] 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.

[0031] For example, see Fig.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.

[0032] It should be noted that, please continue to refer to Fig.10 and Fig.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.

[0033] 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: 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; S2, install the baffle 643 on the column 62, abut the material rod 63 and the abutment block 645 through the baffle 643, and sequentially drive 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 6456, so that the axis of the partition 6456 is consistent with the axis of the material rod 63, and the axial inner wall of the partition 6456 is spaced from the material rod 63; S3, placing the support mechanism 6 loaded with a plurality of magnetic cores 4 in the tray 5, and placing the tray 5 in the magnetic field area of ​​the furnace body 11; S4, through the driving of 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 component 607 is inserted into the position between the adjacent partitions 6456, and abuts against the upper partition 6456 to push the upper partition 6456 to move toward the side away from the base 61; S5. Through continued driving of the swing driving member, the plurality of swing rods 605 swing to the end position in sequence 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, start the heater 13 to heat the magnetic core 4 in the furnace body 11, and magnetize the magnetic field area through the magnetization component.

[0034] The magnetic core 4 prepared by the above method can be subjected to heat treatment in a magnetic field, so that the magnetic core 4 can be subjected to heat conduction of a uniform hot air flow, so that the magnetic core 4 is heated at a constant temperature and filled with a magnetic field. Through the combined effect of heat treatment and an external magnetic field, the magnetic properties of the magnetic core 4, especially the magnetic permeability, can be optimized.

[0035] It should be noted that, when the high permeability nanocrystalline magnetic core preparation device is used, multiple baffles 6456 and multiple magnetic cores 4 are respectively sleeved on the material rod 63, so that the upper and lower parts of the magnetic cores 4 are provided with baffles 6456, the baffle 643 is placed on the top of the column 62, and the baffle 643 and the column 62 are axially limited by the limiting constraints of the limiting block 644 and the limiting groove 6441, and the screw 642 is tightened by the knob 641. During the process, the pressure plate presses down the baffle plate 643, so that the baffle plate 643 moves down until the baffle plate 643 abuts against the top surface of the column 62, and the upper end of the material rod 63 is sealed. At the same time, the baffle plate 643 abuts against the abutment block 645, so that the guide rod 6451 moves down, and the inner plate 6453 moves outward through the second connecting rod 6452, so that the inner plate 6453 abuts against the ball 6458, so that the inner wall of the partition plate 6456 and the side wall of the material rod 63 are evenly spaced. Then, driven by the motor, the driving gear 601, the transition gear 602 and the driven gear 603 are meshed in sequence to realize that the swing rod 605 swings from the initial position to the final position. The arc convex surface of the abutment rod 6073 abuts against the wedge surface of the partition 6456 and squeezes and extends into the position between the adjacent partitions 6456, so that the partitions 6456 are spaced apart, and further the abutment rod 6073 moves toward the final position. Fig.13 The position shown is rotated clockwise, so that the upper partition 6456 further lifts all the magnetic cores 4 and the partition 6456 above the upper partition 6456, so as to further increase the interval between adjacent partitions 6456, so that after all the swing rods 605 swing to the end position in sequence, all the magnetic cores 4 are lifted up and spaced in sequence; Then, the supporting mechanism 6 is placed on the tray 5 in the furnace body 11, and the door body 12 is closed. The heater 13 is controlled to work with the help of the controller 3 to control the heating of the space in the furnace body 11. Through the above-mentioned spacing distribution setting of the magnetic core 4, the hot air flow in the furnace body 11 can pass through the gap between the partitions 6456 and pass through the through hole 6457 to closely contact the magnetic core 4, and the hot air flow passes through the gap between the radial inner wall of the partition 6456 and the side wall of the material rod 63, so that the inner wall position of the magnetic core 4 adjacent to the material rod 63 is filled with hot air flow, so that the overall heating of the magnetic core 4 is uniform, and the problem of temperature deviation at different positions of the magnetic core caused by the existing magnetic cores 4 being stacked closely together is solved. The magnetic component is controlled to work with the help of the controller 3, so that the magnetic core 4 in the furnace body 11 is heated at a constant temperature and filled with a 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.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A preparation device for high magnetic permeability nanocrystalline magnetic core, characterized in that: include: A magnetic heat treatment mechanism (1), wherein the magnetic heat treatment mechanism (1) is used to perform magnetic field heat treatment on a magnetic core (4) to be treated; A material supporting mechanism (6), the material supporting mechanism (6) being arranged on a tray (5), the material supporting mechanism (6) comprising a base (61), a material rod (63) and a spacing assembly (60), the material rod (63) being arranged on a side of the base (61) away from the tray (5), the material rod (63) being used to sleeve a partition (6456) and a magnetic core (4) to be heat treated, and the partition (6456) being arranged on the upper and lower sides of the magnetic core (4), the spacing assembly (60) being arranged on the base (61), the spacing assembly (60) comprising a positioning A driving member, a swing rod (605) and a pitch adjustment component (607), wherein the output end of the swing driving member is transmission-connected to the swing rod (605), wherein the swing rods (605) are arranged in pairs and are symmetrically distributed on both sides of the material rod (63), and the number of the swing rods (605) on one side of the material rod (63) is consistent with the number of the magnetic cores (4), and each of the swing rods (605) is respectively provided with a pitch adjustment component (607) on one side facing the material rod (63), and the output end of the pitch adjustment component (607) is arranged on a side away from the swing rod (605); When the swing rod (605) swings from the initial position to the final position under the drive of the swing driving member, the output end of the distance adjustment component (607) extends to the position between adjacent partitions (6456), and abuts against the upper partition (6456) to push the upper partition (6456) toward the side away from the base (61), wherein, along the extension direction of the material rod (63) and in the direction away from the base (61), the multiple swing rods (605) swing to the final position in sequence, so that the multiple magnetic cores (4) are lifted in sequence.

2. The preparation device of a high magnetic permeability nanocrystalline magnetic core according to claim 1, characterized in that: The magnetic heat treatment mechanism (1) comprises a furnace body (11) and a heater (13); a magnetic 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 magnetic assembly; and 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 preparation device of a high magnetic permeability nanocrystalline magnetic core according to claim 2, characterized in that: The positioning drive member comprises a driving gear (601), a transition gear (602), a driven gear (603) and a main shaft (604); the input end of the driving gear (601) is connected to the motor for transmission; the driving gear (601) is meshed with the transition gear (602); the driven gears (603) are arranged in pairs; the paired driven gears (603) are meshed with each other for transmission; the transition gear (602) is meshed with one of the driven gears (603) for transmission; 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 side of the main shaft (604) located away from the base (61) and the driven gear (603); a torsion spring is provided at the sleeved portion between the swing rod (605) and the main shaft (604); a limit rod (606) is provided on the side of the swing rod (605) facing the material rod (63); the limit rod (606) is fixedly arranged on the base (61); when the swing rod (605) is located at the end position, the swing rod (605) abuts against the limit rod (606); There are a plurality of transition gears (602), and the plurality of transition gears (602) are respectively meshed with the driving gear (601) for transmission, and the number of the transition gears (602) is consistent with the number of the material rods (63).

4. The preparation device for a high magnetic permeability nanocrystalline magnetic core according to claim 3, characterized in that: The distance adjustment assembly (607) comprises a sleeve (6071), a slide rod (6076), a first spring (6075), a wedge block (6074), an abutment rod (6073) and a first connecting rod (6072); a sleeve (6071) is fixedly provided on the side of the swing rod (605) facing the material rod (63); one end of the slide rod (6076) is slidably connected in the inner cavity of the sleeve (6071); the other end of the slide rod (6076) penetrates to the outer cavity of the sleeve (6071) A wedge block (6074) is fixedly connected thereto, a second spring (6459) is sleeved on the sliding rod (6076), an outer end of the wedge block (6074) is rotatably connected to an abutment rod (6073), an outer side of the abutment rod (6073) facing the material rod (63) is a circular arc convex surface, an inner side of the abutment rod (6073) is rotatably connected to a first connecting rod (6072), and an end of the first connecting rod (6072) away from the abutment rod (6073) is rotatably connected to the sleeve (6071); A wedge surface is provided at the edge of one end of the partition (6456) away from the abutting magnetic core (4); when the rocker arm (605) is located at the end position, the wedge block (6074) frictionally abuts against the wedge surface of the partition (6456) located below, and the arc convex surface of the abutting rod (6073) frictionally abuts against the wedge surface of the partition (6456) located above.

5. The device for preparing a high magnetic permeability nanocrystalline magnetic core according to claim 4, characterized in that: The partition plate (6456) is provided with a through hole (6457), and along the axial direction of the material rod (63), the through hole (6457) passes through 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).

6. The device for preparing a high magnetic permeability nanocrystalline magnetic core according to claim 5, characterized in that: A plug-in socket (6301) is provided on a side of the base (61) away from the tray (5), and the lower end of the material rod (63) is mounted on the base (61) via the plug-in socket (6301), wherein when the swing arm (605) is located at the initial position, the lower end surface of the partition (6456) at the lower end of the material rod (63) abuts against the upper end surface of the plug-in socket (6301), and the edge position of the lower end surface of the partition (6456) at the lower end is spaced apart from the base (61).

7. The device for preparing a high magnetic permeability nanocrystalline magnetic core according to claim 6, characterized in that: A column (62) is fixedly arranged on the base (61), a plurality of material rods (63) are circumferentially distributed around the column (62), a material blocking assembly (64) is arranged at one end of the column (62) away from the base (61), the material blocking assembly (64) comprises a baffle (643), and the upper end of the material rod (63) abuts against the baffle (643); A cylindrical cavity is formed in the material rod (63), and a resist assembly is arranged in the cylindrical cavity of the material rod (63). The resist assembly is used to abut against the radial inner wall of the partition (6456) so that the radial inner wall of the partition (6456) and the side wall of the material rod (63) are spaced apart.

8. The device for preparing a high magnetic permeability nanocrystalline magnetic core according to claim 7, characterized in that: The material blocking assembly (64) further comprises a knob (641), a screw (642) and a limit block (644); the output end of the knob (641) is fixedly connected to a pressure plate; the side of the pressure plate away from the knob (641) is fixedly connected to the screw (642); the screw (642) is threadedly connected to the inner cavity of the upper end of the column (62); the baffle (643) is clamped between the pressure plate and the column (62); the side of the baffle (643) away from the knob (641) is fixedly connected to the limit block (644); a limit groove (6441) is provided on the upper side of the column (62); the limit block (644) is in limit contact with the column (62) through the limit groove (6441).

9. The device for preparing a high magnetic permeability nanocrystalline magnetic core according to claim 8, characterized in that: The abutment assembly comprises an abutment block (645), a guide rod (6451), a second connecting rod (6452), an inner plate (6453), an outer plate (6455) and a second spring (6459); the guide rod (6451) is erected in the barrel cavity of the material rod (63); the upper end of the guide rod (6451) is fixedly connected to the abutment block (645); the side of the guide rod (6451) is rotatably connected to the second connecting rod (6452); one end of the second connecting rod (6452) away from the guide rod (6451) is rotatably connected to the inner plate (6453); the side of the inner plate (6453) away from the guide rod (6451) is fixedly connected to the outer plate (6455) via a fixing block (6454). ), and a second spring (6459) is provided between the inner 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 to the inner plate (6453), and the other end of the second spring (6459) is fixedly connected to the inner wall of the barrel cavity of the material rod (63), a through groove (631) is provided on the side of the barrel cavity of the material rod (63), and a ball (6458) is embedded in the axial inner wall of the partition plate (6456), and when the baffle plate (643) abuts against the upper end of the material rod (63), the baffle plate (643) abuts against the abutment block (645), and the inner plate (6453) is displaced to the outside of the material rod (63) through the through groove (631) and abuts against the ball (6458).

10. A method for preparing a high magnetic permeability nanocrystalline magnetic core, characterized in that: The preparation device of claim 9 is used to prepare a magnetic core, 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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