Integrated ferrite structure and deburring jig

Abstract

The utility model discloses an integrated ferrite structure and a deburring jig, belongs to the technical field of high-power integrated ferrite products, and is designed for solving the problems of poor density, overlarge deformation degree and the like of the existing product. The utility model discloses an integrated ferrite structure, which comprises a wall part and a ferrite part, the central column is arranged on the surface of the wall part and extends in the direction perpendicular to the wall part; the two leg parts are arranged on the surface of the wall part, the extending direction of the two leg parts is the same as that of the central column, the two leg parts are symmetrically arranged about the axis of the central column, and the side faces, close to the central column, of the leg parts are planes; the wall portion, the central column, and the leg portions are configured to be releasable in a radial direction of the central column. According to the integrated ferrite structure and the deburring jig disclosed by the utility model, the wall part, the central column and the leg parts can be demolded along the radial direction of the central column, so that the problem of overlarge density difference caused by overlong central column and leg parts is solved, the deformation degree of the integrated ferrite structure is reduced, and the wall part and the leg parts are prevented from shrinking and cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of high-power integrated ferrite products, in particular to an integrated ferrite structure and a jig for deburring the integrated ferrite structure. Background Art

[0002] Manganese zinc soft ferrite is widely used in the manufacture of high-frequency transformers, sensors, noise filters and other devices. As the power requirements increase, the requirements for the size and length of ferrites are also getting higher and higher.

[0003] At present, high-power integrated ferrite products mainly include a flat wall, a central column and two legs arranged on the wall. The central column and the legs extend in the same direction and the two legs are symmetrically arranged relative to the central column. The side of each leg facing the central column is an arc surface, and it protrudes in the direction away from the central column. Its shape is similar to the existing PQ type magnetic core products, but the length of the legs is increased.

[0004] Because the inner side of the leg is a concave arc, it is impossible to demould along the radial direction of the center column during processing, because the mold will be blocked by the inner side edge of the leg. Existing high-power integrated ferrite products can only be demoulded along the axial direction of the center column. The density difference between different parts of the product is large, the upper mouth of the product is greatly deformed, the legs and walls will crack significantly due to shrinkage, the performance of the product after grinding is greatly different, and the product legs are easily deformed, making it difficult to assemble the frame. Utility Model Content

[0005] The utility model aims to provide an integrated ferrite structure and a burr removal jig, which reduces density difference and deformation degree.

[0006] To achieve this purpose, on the one hand, the utility model adopts the following technical solutions:

[0007] An integrated ferrite structure comprises: a wall portion in the shape of a plate; a central column arranged on the surface of the wall portion and extending in a direction perpendicular to the wall portion; and two legs arranged on the surface of the wall portion and extending in the same direction as the central column, wherein the two legs are symmetrically arranged about the axis of the central column, and the side surfaces of the legs close to the central column are flat; the wall portion, the central column and the legs are configured to be demoldable in the radial direction of the central column.

[0008] In one preferred embodiment, the side of the leg away from the central column is a plane.

[0009] In one preferred embodiment, the side surface of the leg away from the central column is an arc-shaped surface, and the arc-shaped surface protrudes in a direction away from the central column.

[0010] In one preferred embodiment, the vertex of the arc-shaped surface is located on the parting line of the integrated ferrite structure.

[0011] In one of the preferred embodiments, a bevel-shaped demoulding groove is provided on the wall portion.

[0012] In one of the preferred embodiments, one end of the demoulding groove is connected to the root of the central column, and the other end of the demoulding groove extends in a direction opposite to the extension direction of the central column.

[0013] In one of the preferred embodiments, the thickness of the wall portion where the demoulding groove is located is smaller than the thickness of the wall portion where the demoulding groove is not provided.

[0014] In one preferred embodiment, the outer circumference of the center column includes two arcuate circumferential surfaces and two flat circumferential surfaces, the arcuate circumferential surfaces and the flat circumferential surfaces are arranged in sequence at intervals, and the flat circumferential surfaces are parallel to the side surfaces of the legs close to the center column.

[0015] In one of the preferred embodiments, a step portion is provided on the arcuate circumferential surface and at the connection between the arcuate circumferential surface and the flat circumferential surface, and the step portion is perpendicular to the demoulding direction.

[0016] On the other hand, the utility model adopts the following technical solutions:

[0017] A deburring jig is used to deburr the above-mentioned integrated ferrite structure. The jig is provided with an arc-shaped concave surface, and a friction surface is provided at the edge of the arc-shaped concave surface. The friction surface is configured to fit on the outer peripheral surface of the center column to remove burrs.

[0018] The side of the leg of the integrated ferrite structure disclosed by the utility model is flat near the center column, and the wall, the center column and the leg are configured to be demolded along the radial direction of the center column, changing the vertical pressing of the existing integrated ferrite structure to horizontal pressing, solving the problem of excessive density difference caused by the excessive length of the center column and the leg, reducing the deformation degree of the integrated ferrite structure, preventing the wall and the leg from shrinking and cracking, and meeting the requirements for convenient assembly of the integrated ferrite structure and the skeleton.

[0019] The arc-shaped concave surface of the jig disclosed in the utility model is provided with a friction surface, which can be attached to the outer peripheral surface of the central column to remove burrs, is easy to use, has a good deburring effect, does not cause damage to the integrated ferrite structure, and is safer to use. The jig itself has a simple structure and low processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an integrated ferrite structure provided by a specific embodiment of the utility model;

[0021] Figure 2It is a structural schematic diagram of an integrated ferrite structure after removing the sealing plate provided by a specific embodiment of the utility model;

[0022] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0023] Figure 4 It is a side view of the integrated ferrite structure after removing the sealing plate provided by the specific embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a fixture provided in a specific embodiment of the utility model;

[0025] Figure 6 It is a front view of the fixture provided by the specific implementation mode of the utility model;

[0026] Figure 7 It is a schematic diagram of the combination of an integrated ferrite structure and a fixture provided in a specific embodiment of the utility model;

[0027] Figure 8 It is a front view of the combined structure of the integrated ferrite structure and the fixture provided in the specific implementation manner of the utility model.

[0028] In the figure:

[0029] 1. Wall; 2. Center column; 3. Leg; 4. Sealing plate; 5. Jig; 11. Demolding groove; 21. Arc circumferential surface; 22. Flat circumferential surface; 23. Step portion; 51. Arc concave surface; 52. Friction surface. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific implementation methods disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] The integrated ferrite structure disclosed in this embodiment, such as Figures 1 to 4 As shown, it includes a wall portion 1, a central column 2, two legs 3 and a sealing plate 4. The wall portion 1 is in the shape of a flat plate, and the central column 2 and the two legs 3 are respectively arranged on the surface of the wall portion 1 and extend in a direction perpendicular to the wall portion 1. The two legs 3 are symmetrically arranged about the axis of the central column 2, and the side (inner side) of the leg 3 close to the central column 2 is a plane. The sealing plate 4 is connected to the top of the central column 2 and the leg 3.

[0037] The wall 1, the center column 2 and the leg 3 of the integrated ferrite structure are configured to be demoulded along the radial direction of the center column 2 ( Figure 2 The straight line with an arrow in the middle indicates the pressing direction, and the opposite direction is the demolding direction). The vertical pressing of the existing integrated ferrite structure is changed to horizontal pressing, which solves the problem of excessive density difference caused by the excessive length of the center column 2 and the leg 3, reduces the deformation degree of the integrated ferrite structure, prevents the wall 1 and the leg 3 from shrinking and cracking, and meets the requirements of convenient assembly of the integrated ferrite structure and the skeleton.

[0038] The specific shape of the side (outer side) of the leg 3 away from the center column 2 is not limited, as long as it does not hinder the radial demolding along the center column 2. In this embodiment, the side of the leg 3 away from the center column 2 is a plane, that is, the leg 3 is a rectangular parallelepiped, the mold structure is simple, the processing efficiency is high, and the overall weight of the integrated ferrite structure is small.

[0039] Of course, the side of the leg 3 away from the center column 2 can also be an arcuate surface, and the arcuate surface protrudes in the direction away from the center column 2. The leg 3 is locally thickened without hindering the radial demolding along the center column 2, thereby improving the strength of the leg 3 and extending the service life of the integrated ferrite structure. The vertex of the arcuate surface is preferably located on the parting line of the integrated ferrite structure to ensure that the outer side of the leg 3 will not block the mold during demolding, thereby improving processing efficiency.

[0040] On the basis of the above structure, an inclined demoulding groove 11 is provided on the wall portion 1 to solve the problem of demoulding difficulty, avoid damage or even destruction of the product due to forced demoulding, and alleviate the difficulty in separating the mold and the product due to the expansion force during the pressing process.

[0041] The specific location of the demoulding groove 11 is not limited, as long as the integrated ferrite structure can be demoulded smoothly after being pressed. In this embodiment, one end of the demoulding groove 11 is connected to the root of the center column 2, and the other end of the demoulding groove 11 extends in a direction opposite to the extension direction of the center column 2. That is, the demoulding groove 11 is arranged at the root of the center column 2, which solves the problem that the connection between the mold and the center column 2 is easy to get stuck, and improves the processing yield rate.

[0042] The demolding groove 11 can be a wedge-shaped groove directly dug out at the root of the center column 2. The thickness of the wall 1 at the location of the demolding groove 11 is smaller than the thickness of the wall 1 without the demolding groove 11. The processing efficiency is high, and the outer side surface of the wall 1 (the side without the center column 2 and the leg 3) is smoother, avoiding interference with surrounding devices.

[0043] A ridge may also be provided on the outer surface of the wall portion 1 at a position corresponding to the demolding groove 11, and the shape and size of the ridge do not hinder the demolding along the radial direction of the center column 2. In this structure, the thickness of the wall portion 1 at the position of the demolding groove 11 is greater than or equal to the thickness of the wall portion 1 without the demolding groove 11, the overall strength of the wall portion 1 is greater, and the integrated ferrite structure is more durable and has a long service life.

[0044] On the basis of the above structure, the outer circumference of the center column 2 includes two arcuate circumferential surfaces 21 and two flat circumferential surfaces 22, which are arranged in sequence and spaced apart, and the flat circumferential surface 22 is parallel to the side of the leg 3 close to the center column 2. The left and right sides of the center column 2 are designed to be flat, which solves the problem that the parting line is difficult to connect smoothly when the cylindrical structure is pressed. The two flat circumferential surfaces 22 can be processed by the upper mold or the lower mold, or by the upper mold and the lower mold respectively, which can be selected according to the specific situation.

[0045] A step portion 23 is provided on the arc circumferential surface 21 and at the connection between the arc circumferential surface 21 and the flat circumferential surface 22. The step portion 23 is perpendicular to the demoulding direction. The step portion 23 can also be called a joining line, and is located between the arc circumferential surface 21 and the flat circumferential surface 22. When the upper and lower molds cannot be accurately matched due to machining accuracy problems, the step portion 23 can prevent the shape of the connection between the arc circumferential surface 21 and the flat circumferential surface 22 from being uncontrollable, thereby reducing the difficulty of product molding control and mold wear.

[0046] like Figure 5 and Figure 6 As shown, this embodiment also discloses a jig for deburring the integrated ferrite structure. The block-shaped jig 5 is provided with an arc-shaped concave surface 51, and the edge of the arc-shaped concave surface 51 is provided with a rough friction surface 52. The length direction of the friction surface 52 is parallel to the axis of the center column 2. Figure 7 and Figure 8 As shown, when in use, align the fixture 5 with the center column 2 and press down ( Figure 8The straight line with an arrow in the middle indicates the pressing direction), and the friction surface 52 can be attached to the outer peripheral surface of the center column 2, and the friction surface 52 is used to remove burrs. The specific roughness of the friction surface 52 is not limited, as long as it can effectively remove the burrs. When the burrs on the outer peripheral surface of the center column 2 are very few and very fine, the friction surface 52 can be a non-glossy surface.

[0047] The processing process of the integrated ferrite structure is as follows: designing a processing mold, pouring ferrite powder into the mold, and producing a ferrite blank through a pressing molding process; the product is sintered in a vertical direction to reduce the degree of product deformation, prevent the leg 3 and the wall 1 from shrinking and cracking, and the product is flat up and down under the action of gravity; after sintering, the sealing area is ground to meet the requirements of convenient assembly of the integrated ferrite structure and the skeleton; performing a tempering process to eliminate the influence of stress, and obtaining a high-power combined application integrated ferrite structure, and the product can be used by itself or in combination with sheet products.

[0048] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, but may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Integrated ferrite structure, characterized in that, include: The wall portion (1) is in the shape of a flat plate; A central column (2) is arranged on the surface of the wall portion (1) and extends in a direction perpendicular to the wall portion (1); as well as, Two legs (3) are arranged on the surface of the wall (1) and extend in the same direction as the central column (2); the two legs (3) are symmetrically arranged about the axis of the central column (2); and the side surfaces of the legs (3) close to the central column (2) are flat; The wall portion (1), the central column (2) and the leg portion (3) are configured to be demouldable along the radial direction of the central column (2).

2. The integrated ferrite structure according to claim 1, characterized in that The side surface of the leg (3) away from the central column (2) is a plane.

3. The integrated ferrite structure according to claim 1, characterized in that The side surface of the leg (3) away from the central column (2) is an arc-shaped surface, and the arc-shaped surface protrudes in a direction away from the central column (2).

4. The integrated ferrite structure according to claim 3, characterized in that: The vertex of the arcuate surface is located on the parting line of the integrated ferrite structure.

5. The integrated ferrite structure according to any one of claims 1 to 4, characterized in that The wall portion (1) is provided with an inclined demoulding groove (11).

6. The integrated ferrite structure according to claim 5, characterized in that One end of the demoulding groove (11) is connected to the root of the central column (2), and the other end of the demoulding groove (11) extends in a direction opposite to the extension direction of the central column (2).

7. The integrated ferrite structure according to claim 6, characterized in that The thickness of the wall portion (1) at the location where the demoulding groove (11) is located is smaller than the thickness of the wall portion (1) where the demoulding groove (11) is not provided.

8. The integrated ferrite structure according to any one of claims 1 to 4, characterized in that The outer peripheral surface of the central column (2) comprises two sections of arcuate peripheral surfaces (21) and two sections of flat peripheral surfaces (22), wherein the arcuate peripheral surfaces (21) and the flat peripheral surfaces (22) are arranged in sequence and spaced apart, and the flat peripheral surfaces (22) are parallel to the side surfaces of the legs (3) close to the central column (2).

9. The integrated ferrite structure according to claim 8, characterized in that A step portion (23) is provided on the arcuate circumferential surface (21) and at the connection between the arcuate circumferential surface (21) and the flat circumferential surface (22), and the step portion (23) is perpendicular to the demoulding direction.

10. A deburring jig for deburring the integrated ferrite structure according to any one of claims 1 to 9, characterized in that: The jig (5) is provided with an arc-shaped concave surface (51), and the edge of the arc-shaped concave surface (51) is provided with a friction surface (52), and the friction surface (52) is configured to be able to fit on the outer peripheral surface of the central column (2) to remove burrs.

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