Extrusion positioning heat treatment die structure of special-shaped nanocrystalline magnetic core

Abstract

The utility model discloses an extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core, which comprises a bottom plate, a group of square tubes are arranged on the bottom plate along the length direction of the bottom plate, a plurality of groups of magnetic core shaping components are arranged on the square tubes, a locking component is arranged at the end part of the first magnetic core shaping component, and a positioning component is arranged at the end part of the second magnetic core shaping component. A positioning metal plate is arranged at the end of the last magnetic core shaping assembly, a set of round magnetic cores are arranged on two square pipes in the middle of a bottom plate of the mold, then the inner mold is arranged in the round magnetic cores, the outer mold is placed on the side portions of the round magnetic cores, the locking block slides to the concave face of the first outer mold, and then the round magnetic cores are formed. The two positioning metal plates are clamped to the two sides of the outer mold on the outermost side correspondingly, the whole magnetic core shaping assembly is extruded, positioned and limited, and then the round magnetic core can be changed into the special-shaped magnetic core to be subjected to pre-deformation treatment.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing nanocrystalline magnetic cores of anti-filter interference devices of new energy electric vehicles, and in particular to an extrusion positioning heat treatment die structure of special-shaped nanocrystalline magnetic cores. Background Art

[0002] Nanocrystalline magnetic cores are generally made of nanocrystalline alloy strips that are wound and then heat treated, and are often used to make magnetic heads, transformers, choke coils, high-efficiency motors, reactors, etc. Traditional nanocrystalline magnetic cores are generally rectangular or racetrack-shaped, but with the continuous development of the application fields and requirements of nanocrystalline magnetic cores, higher requirements have been placed on the performance and shape of nanocrystalline magnetic cores, and irregular arc-shaped nanocrystalline magnetic cores (special-shaped nanocrystalline magnetic cores) have been increasingly used.

[0003] A Chinese utility model patent with publication number CN214753364U discloses a magnetic core quick installation tool fixture, including at least two first connecting rods and second connecting rods, a first installation position is left between two adjacent first connecting rods, and a second installation position is left between two adjacent second connecting rods, and the first connecting rod can be detachably clamped on the second connecting rod, so that it can be used to assemble multiple magnetic cores at the same time, can be reused many times, and can facilitate the assembly of tooling runway-shaped magnetic cores; a Chinese utility model patent with publication number CN207824753U discloses a rectangular iron core quick installation fixture, including a bottom plate and two baffles, the two baffles are respectively installed on both sides of the bottom plate, one of the baffles is fixedly installed on the edge of the bottom plate by screws, and the other baffle is in contact with the upper surface of the bottom plate, and two fixing pins are provided on the outside of the baffle, the two fixing pins are provided on the outside of the baffle. The fixing pin is also fixedly mounted on the bottom plate, the fixing pin is sleeved with an eccentric shaft, the baffle is sleeved with a pressure plate, the pressure plate is fixed and limited by a round bar pin, the round bar pin is fixed by inserting and embedding the inside of the mounting hole, an iron core is arranged inside the rectangular sandwich formed by the bottom plate, the two baffles and the pressure plate, and an iron core inner mold is arranged inside the iron core. The structure is simple, the design is ingenious, the installation is fast, and the rectangular iron core with accurate size can be ensured to be quickly installed; the Chinese utility model patent with publication number CN219677050U discloses a three-hole multi-layer nanocrystalline magnetic core heat treatment mold structure, which is suitable for two-layer (or multi-layer) arrangement of rectangular or runway-shaped nanocrystalline magnetic cores, the assembly process is simple to operate, and it is particularly suitable for mass production of small-sized magnetic cores. The magnetic field received by the magnetic core during the heat treatment crystallization process is uniform, which effectively improves the stability of the magnetic core performance; but it is not suitable for special-shaped nanocrystalline magnetic cores.

[0004] To this end, the utility model proposes an extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core which is easy to quickly assemble and disassemble. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an extrusion positioning heat treatment mold structure for special-shaped nanocrystalline magnetic cores, which can quickly assemble irregular arc-shaped magnetic cores and can simultaneously perform qualitative tests.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A die structure for extrusion positioning heat treatment of a special-shaped nanocrystalline magnetic core comprises a bottom plate, a group of square tubes are arranged on the bottom plate along its length direction, a plurality of groups of magnetic core shaping components are arranged on the square tubes, a locking component is arranged at the end of the first magnetic core shaping component, and a positioning sheet metal is arranged at the end of the last magnetic core shaping component.

[0008] Furthermore, each group of magnetic core components includes an inner mold and an outer mold, wherein the inner mold is arranged along the width direction of the bottom plate, the shape of the inner mold is the same as the shape of the required special-shaped magnetic core, and the outer mold is located outside the inner mold.

[0009] Furthermore, the shape of the outer mold is the same as the arc shape of two sides of the required special-shaped magnetic core.

[0010] Furthermore, the locking assembly includes a locking block, which is located on the two middle square tubes. A sliding boss is provided on the lower surface of the locking block. The two sides of the sliding boss and the lower surface of the locking block form a sliding groove. The locking block cooperates with the two middle square tubes through the two sliding grooves and is fixed after the position is adjusted.

[0011] Furthermore, through holes are provided on the locking block and the sliding boss, and an elliptical hole groove is provided on the base plate directly below the locking block. After the locking block is slidably adjusted between the two middle square tubes, it is fixed by a hexagonal screw passing through the through hole and the elliptical hole groove in conjunction with a square nut.

[0012] Furthermore, the ends of the square tubes on both sides of the bottom plate are provided with positioning sheet metals, and the two positioning sheet metals are respectively clamped on both sides of the outermost outer mold.

[0013] Furthermore, the distance between the two positioning sheet metals is the length of the outer mold.

[0014] Furthermore, the bottom plate is flanged upward at both sides along its length direction, and flanged downward at both ends along its width direction.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1) By adopting the technical solution of the utility model, a group of circular magnetic cores are placed on two square tubes in the middle of the bottom plate of the mold, and then the inner mold is set inside the circular magnetic core, and then the outer mold is placed on the side of the circular magnetic core, and then the locking block is slid to the concave surface of the first outer mold, and the two positioning sheet metals are respectively clamped on both sides of the outermost outer mold, and the entire magnetic core shaping component is squeezed and positioned to limit, so that the pre-deformation treatment of changing the circular magnetic core into a special-shaped magnetic core can be realized;

[0017] 2) The mold of the utility model can assemble multiple irregular arc-shaped magnetic cores and finalize them at the same time, and the irregular arc-shaped dimensions of the inner mold and the outer mold can be matched according to the shape and size of the magnetic core;

[0018] 3) The conformity of the special-shaped nanocrystalline magnetic core assembled and shaped by the mold of the utility model is good;

[0019] 4) The mold of the utility model has a simple structure and is easy to quickly assemble and disassemble, thus avoiding damage to the surface of the magnetic core due to manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the extrusion positioning heat treatment die of the utility model;

[0021] Figure 2 This is a schematic diagram of the locking block structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the circular magnetic core structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the bottom plate structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the square nut of the utility model.

[0025] In the figure: 1. Base plate; 2. Square tube; 3. Positioning sheet metal; 4. Locking block; 5. Square nut; 6. Hexagon socket screw; 7. Inner mold; 8. Special-shaped magnetic core; 9. Outer mold; 10. Round magnetic core; 11. Sliding boss; 12. Sliding groove; 13. Through hole; 14. Oval hole groove. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings, but the scope of protection of the present invention is not limited to the described scope.

[0027] In order to efficiently and quickly assemble and shape irregular arc-shaped special-shaped magnetic cores, the utility model proposes an extrusion positioning heat treatment mold structure for special-shaped nanocrystalline magnetic cores, such as Figure 1 and 4As shown, it includes a bottom plate 1, on which a group of square tubes 2 are arranged along its length direction, and four square tubes 2 are welded on the plane of the bottom plate 1, two of which are welded in the middle of the bottom plate 1, and the other two square tubes 2 are respectively welded to the upper surface of the bottom plate 1 near both sides.

[0028] In this embodiment, the cross-sectional size of the square tube 2 is 10 mm*10 mm, and the welding gap distance between the two middle square tubes 2 is 15 mm.

[0029] Several groups of magnetic core shaping components are arranged on the square tube 2 , a locking component is arranged at the end of the first magnetic core shaping component, and a positioning sheet metal 3 is arranged at the end of the last magnetic core shaping component.

[0030] In addition, the bottom plate 1 is turned up at both sides along its length direction to limit the position of the magnetic core shaping component and prevent it from moving. The bottom plate 1 is turned down at both ends along its width direction, and the width of the lower turn is 1-2 mm.

[0031] Each set of magnetic core components includes an inner mold 7 and an outer mold 9. The inner mold 7 is arranged along the width direction of the bottom plate 1. The shape of the inner mold 7 is the same as the shape of the required special-shaped magnetic core 8. The outer mold 9 is located outside the inner mold 7. The circular magnetic core 10 is extruded, positioned and heat-treated to form a special-shaped nanocrystalline magnetic core. The height of the inner mold 7 exceeds the height of the special-shaped magnetic core 8 by 5mm. The two corners at the bottom of the inner mold 7 are chamfered with an inclination of 45°. The height of the chamfer is 1-2mm. It is convenient to place it in the circular magnetic core 10.

[0032] The shape of the outer mold 9 is the same as the arcs on both sides of the required special-shaped magnetic core 8. The arc structures on both sides of the outer mold 9 correspond to the arc structures of the concave and convex surfaces of the special-shaped magnetic core 8 respectively. The height of the outer mold 9 is the same as the height of the special-shaped magnetic core 8.

[0033] like Figure 2 As shown, the locking assembly includes a locking block 4, which is located on the two middle square tubes 2. A sliding boss 11 is provided on the lower surface of the locking block 4. The two sides of the sliding boss 11 and the lower surface of the locking block 4 form a sliding groove 12. The locking block 4 cooperates with the two middle square tubes 2 through the two sliding grooves 12 and is fixed after the position is adjusted.

[0034] The welding gap between the two middle square tubes 2 is 15 mm, which is wider than the sliding boss 11 of the locking block 4, and the sliding surface widths of the two sliding surfaces of the locking block 4 and the contact surface of the square tube are 2-3 mm, so that the locking block 4 can slide freely on the surface of the square tube 2. In this embodiment, the width of the sliding boss 11 is 14.8 mm.

[0035] The locking block 4 and the sliding boss 11 are provided with a through hole 13, and the bottom plate 1 is provided with an elliptical hole groove 14 directly below the locking block 4. After the locking block 4 is slidably adjusted between the two square tubes 2, the hexagonal screw 6 is passed through the through hole 13 and the elliptical hole groove 14 to be fixed with the square nut 5. The square nut 5 is as shown in FIG. Figure 5 shown.

[0036] In this embodiment, the elliptical hole 14 has a width of 6.5 mm and a length of 35 mm.

[0037] The ends of the square tubes 2 near both sides of the bottom plate 1 are provided with positioning sheet metals 3, and the two positioning sheet metals 3 are respectively clamped on both sides of the outermost outer mold 9 to support and position the outermost end of the outer mold 9. The distance between the two positioning sheet metals 3 is the length of the outer mold 9.

[0038] In this embodiment, the base plate 1, the square tube 2, the positioning sheet metal 3, the locking block 4, the square nut 5, the hexagonal screw 6, the inner mold 7 and the outer mold 9 are all made of non-magnetic stainless steel materials.

[0039] Will be like Figure 3 The pre-deformation process of changing the circular magnetic core 10 into the special-shaped magnetic core 8 is as follows:

[0040] First, a group of circular magnetic cores 10 are placed on two square tubes 2 in the middle of the base plate 1, and there are 5 of them in this embodiment. Then, the inner mold 7 is set inside the circular magnetic core 10, and then the outer mold 9 is placed on the side of the circular magnetic core 10. Then, the locking block 4 is slid to the concave surface of the first outer mold 9, and the two positioning sheet metals 3 are respectively clamped on both sides of the outermost outer mold 9, and the entire magnetic core shaping assembly is squeezed and positioned to limit the pre-deformation treatment of the circular magnetic core 10 to the special-shaped magnetic core 8.

Claims

1. An extrusion positioning heat treatment die structure for a special-shaped nanocrystalline magnetic core, comprising a bottom plate (1), wherein a group of square tubes (2) are arranged on the bottom plate (1) along its length direction, characterized in that The square tube (2) is provided with a plurality of groups of magnetic core shaping components, wherein the end of the first magnetic core shaping component is provided with a locking component, and the end of the last magnetic core shaping component is provided with a positioning sheet metal (3).

2. The extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core according to claim 1 is characterized in that Each group of magnetic core components comprises an inner mold (7) and an outer mold (9), wherein the inner mold (7) is arranged along the width direction of the base plate (1), the shape of the inner mold (7) is the same as the shape of the required special-shaped magnetic core (8), and the outer mold (9) is located outside the inner mold (7).

3. The extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core according to claim 2 is characterized in that The shape of the outer mold (9) is the same as the arc shape on both sides of the required special-shaped magnetic core (8).

4. The extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core according to claim 1 is characterized in that The locking assembly comprises a locking block (4), the locking block (4) being located on the two middle square tubes (2), the lower surface of the locking block (4) being provided with a sliding boss (11), the two sides of the sliding boss (11) and the lower surface of the locking block (4) forming sliding grooves (12), the locking block (4) being matched with the two middle square tubes (2) via the two sliding grooves (12), and being fixed after the position is adjusted.

5. The extrusion positioning heat treatment die structure of the special-shaped nanocrystalline magnetic core according to claim 4 is characterized in that The locking block (4) and the sliding boss (11) are provided with a through hole (13), and the bottom plate (1) is provided with an elliptical hole groove (14) directly below the locking block (4). After the locking block (4) is slidably adjusted at the position between the two middle square tubes (2), it is fixed by a hexagonal screw (6) passing through the through hole (13) and the elliptical hole groove (14) and cooperating with a square nut (5).

6. The extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core according to claim 1, characterized in that The ends of the square tubes (2) on both sides of the bottom plate (1) are both provided with positioning sheet metals (3), and the two positioning sheet metals (3) are respectively clamped on both sides of the outermost outer mold (9).

7. The extrusion positioning heat treatment die structure of the special-shaped nanocrystalline magnetic core according to claim 1 is characterized in that The distance between the two positioning sheet metals (3) is the length of the outer mold (9).

8. The extrusion positioning heat treatment die structure of a special-shaped nanocrystalline magnetic core according to claim 1, characterized in that The bottom plate (1) is flanged upwards at both sides along its length direction, and flanged downwards at both ends along its width direction.

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