Pad sintering device for rectangular magnetic core sintering

Abstract

The utility model relates to the technical field of magnetic core sintering, in particular to a pad sintering device for sintering a rectangular magnetic core, which comprises a frame body and at least two pad sintering pieces which are detachably connected, the frame body is provided with two cross beams which are arranged in parallel, the pad burning piece comprises a supporting main body, the supporting main body is in a rectangular plate shape, and the two opposite end parts of the supporting main body are respectively provided with supporting legs which are bent downwards; in the sintering process, the pad sintering piece is arranged on the two cross beams in a striding mode, and the supporting feet abut against the outer side faces of the cross beams. According to the pad sintering device, the rectangular magnetic core can be prevented from deforming during sintering, and the sintering effect can be conveniently controlled by adjusting the distance between every two adjacent pad sintering pieces.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core sintering, in particular to a pad sintering device for rectangular magnetic core sintering. Background Art

[0002] In the production process of soft magnetic ferrite cores, powder preparation, green body forming and sintering are the main processes. Among them, sintering is the key process in the production of soft magnetic ferrites. The purpose is to heat and bond the ferrite powder formed into one body by pressing and solidify it into a whole to achieve the required electrical, magnetic and mechanical physical properties.

[0003] In the traditional sintering process, rectangular soft magnetic ferrite green bodies are directly stacked on the bearing plate for direct sintering. The green bodies are easy to adhere to the bearing plate, and the appearance is prone to crystallization, the performance is low, and the strength decreases. Later, corundum sand is evenly spread on the bearing plate to avoid the problem of the product adhering to the bearing plate. However, the sand is easy to embed in the green body after sintering, which is not easy to clean and affects the performance and strength of the magnetic core. For high-grade magnetic cores or other production requirements with stricter requirements, only the stacking method can be used for sintering. After sintering, the bottom magnetic core is scrapped. This method increases the powder cost and labor cost and reduces the product qualification rate.

[0004] In view of the above problems, sometimes a pad sintering plate is set between the magnetic core and the bearing plate in the prior art to reduce the scrap rate of the magnetic core. For example, the patent document with the publication number CN205487737U provides a ferrite sintering gasket. The ferrite sintering gasket includes a gasket body and protrusions made of the same material as the magnetic core. The protrusions are evenly distributed on the upper surface of the gasket body. The ferrite sintering gasket provided by this utility model is placed between the magnetic core and the bearing plate during high-temperature firing. The protrusions on the ferrite sintering gasket are made of ferrite with the same material as the magnetic core. Therefore, the magnetic core will not react with the protrusions on the ferrite sintering gasket, and thus the magnetic core will not be contaminated, ensuring the product performance of the magnetic core. However, the protrusions of this sintering gasket are easy to cause slight deformation of the bottom magnetic core during sintering, which still affects the product performance to a certain extent. Further, some sintering pads will be provided with ventilation holes or ventilation grooves on the body to control the sintering effect of the magnetic core. However, when facing the sintering requirements of magnetic cores with different batches and different sizes, some magnetic cores still have to be straddled on the ventilation holes or ventilation grooves, which is easy to cause uneven heating of the bottom surface of the magnetic core and deformation, affecting the sintering effect of the magnetic core. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the above-mentioned disadvantages and deficiencies of the prior art, the present utility model provides a pad sintering device for rectangular magnetic core sintering, which solves the technical problem that the existing sintering gaskets are prone to deform the magnetic core when controlling the sintering effect.

[0007] (II) Technical Solution

[0008] In order to achieve the above object, the main technical solutions adopted by the present utility model include:

[0009] An embodiment of the present utility model provides a pad sintering device for rectangular magnetic core sintering, including a frame body detachably connected and at least two pad sintering parts;

[0010] The frame body has two parallel cross beams, and the pad sintering part includes a supporting main body, the supporting main body is a rectangular plate shape, and two opposite end portions of the supporting main body are respectively provided with downwardly bent supporting feet;

[0011] During sintering, the pad sintering part straddles the two cross beams, and the supporting feet are in contact with the outer side surfaces of the cross beams.

[0012] Optionally, the end portions of the cross beams are fixedly connected through longitudinal beams;

[0013] The longitudinal beams include a horizontally arranged first longitudinal beam and a second longitudinal beam. The first longitudinal beam is fixedly connected to the first end of the cross beam through multiple columns, and the second longitudinal beam is fixedly connected to the second end of the cross beam through multiple columns; the first end of the column is fixedly connected to the cross beam, and the second end of the column is fixedly connected to the longitudinal beam.

[0014] Optionally, the cross beam is a quadrangular prism with a parallelogram cross section. The first side surface of the quadrangular prism close to the supporting main body is horizontally arranged, and the distance between the upper parts of the second side surfaces of the two quadrangular prisms opposite to each other is smaller than the distance between the lower parts, so that the cross sections of the two cross beams are in an inverted V shape. The supporting feet are plate-shaped and parallel to the second side surface of the quadrangular prism, so that the pad sintering parts can be aligned and placed on the cross beams.

[0015] Optionally, the first side surface of the cross beam close to the supporting main body is provided with scales, and the scales are used to mark the distance between adjacent two pad sintering parts.

[0016] Optionally, the top surface of the supporting main body is used to place the rectangular magnetic core, and is provided with a protective layer made of the same material as the rectangular magnetic core. The protective layer is used to prevent the rectangular magnetic core from adhering to the supporting main body after sintering.

[0017] Optionally, a supporting groove is further provided on the outer side surface or the bottom surface of the cross beam, and the supporting groove is used to support the supporting feet.

[0018] Optionally, a horizontal support plate is provided on the bottom surface of the supporting leg. The width of the horizontal support plate is less than or equal to the width of the bottom of the support groove. When the pad firing piece is placed on the frame body, the horizontal support plate contacts the bottom of the support groove.

[0019] Optionally, the length of the longitudinal beam is greater than or equal to the distance between the outer side walls of the two support grooves.

[0020] (III) Beneficial effects

[0021] The pad firing device provided by the present utility model includes a frame body and at least two pad firing pieces that are detachably connected. The frame body has two parallel cross beams. The pad firing piece includes a support main body, which is a rectangular plate shape. Two opposite end portions of the support main body are respectively provided with supporting legs that are bent downward. During sintering, the pad firing piece straddles the two cross beams, and the supporting legs abut against the outer side surfaces of the cross beams. Based on the pad firing piece detachably arranged on the frame body, the rectangular magnetic core as a whole can be placed on the rectangular plate-shaped support main body, ensuring that the bottom surface of the magnetic core is uniformly heated, preventing the rectangular magnetic core from deforming during sintering, and moreover, the sintering effect can be conveniently controlled by adjusting the distance between two adjacent pad firing pieces. Description of the drawings

[0022] Figure 1 is a schematic structural diagram of the pad firing device provided in the embodiment;

[0023] Figure 2 is Figure 1 the schematic cross-sectional view taken along the line A-A in

[0024] Figure 3 is a schematic structural diagram of another pad firing device provided in the embodiment;

[0025] Figure 4 is a schematic structural diagram of another pad firing device provided in the embodiment;

[0026] Figure 5 is Figure 4 the schematic cross-sectional view taken along the line B-B in

[0027] Figure 6 is a schematic structural diagram of another pad firing device provided in the embodiment.

[0028]

Description of the reference numerals

[0029] 1. Support main body; 2. Cross beam; 201. First side surface; 202. Second side surface; 3. Supporting leg; 4. First longitudinal beam; 5. Second longitudinal beam; 6. Support pillar; 7. Support groove; 701. Outer side wall of the support groove; 8. Horizontal support plate. Detailed implementation manners

[0030] To better explain the present utility model for easier understanding, the present utility model will be described in detail below in conjunction with the accompanying drawings through specific embodiments.

[0031] As Figure 1 shown, an embodiment of the present utility model provides a pad sintering device for rectangular magnetic core sintering, including a detachable frame and at least two pad sintering parts; the frame has two parallel crossbeams 2, and the pad sintering part includes a support body 1, the support body 1 is a rectangular plate, and two opposite end parts of the support body 1 are respectively provided with downwardly bent supporting feet 3; during sintering, the pad sintering part straddles the two crossbeams 2, and the supporting feet 3 are in contact with the outer side surfaces of the crossbeams 2.

[0032] Based on the above-mentioned pad sintering parts detachably arranged on the frame, the whole rectangular magnetic core can be placed on the rectangular plate-shaped support body 1, ensuring that the bottom surface of the magnetic core is evenly heated, preventing the rectangular magnetic core from deforming during sintering, and moreover, the sintering effect can be conveniently controlled by adjusting the distance between two adjacent pad sintering parts. Further, pad sintering parts including support bodies 1 of different sizes can be correspondingly set according to the common specification sizes of rectangular magnetic cores, so as to conveniently replace the corresponding pad sintering parts according to the different sizes of the magnetic cores to be fired.

[0033] In a preferred embodiment of this embodiment, in order to reduce the volume of the pad sintering device to improve the utilization rate of the sintering space, the structure of the frame can be made as simple as possible.

[0034] Specifically as Figure 1 and 2 shown, the ends of the crossbeams 2 are fixedly connected by longitudinal beams; the longitudinal beams include a horizontally arranged first longitudinal beam 4 and a second longitudinal beam 5, the first longitudinal beam 4 is fixedly connected to the first end of the crossbeam 2 through multiple columns 6, and the second longitudinal beam 5 is fixedly connected to the second end of the crossbeam 2 through multiple columns 6; the first end of the column 6 is fixedly connected to the crossbeam 2, and the second end of the column 6 is fixedly connected to the longitudinal beam.

[0035] More preferably, as Figure 3 shown, the crossbeam 2 is a quadrangular prism with a parallelogram cross-section, the first side surface 201 of the quadrangular prism close to the support body 1 is horizontally arranged, and the distance between the upper parts of the second side surfaces 202 of the two quadrangular prisms opposite to each other is smaller than the distance between the lower parts, so that the cross-sections of the two crossbeams 2 are in an inverted V shape, and the supporting feet 3 are plate-shaped parallel to the second side surface 202 of the quadrangular prism, so that the pad sintering parts can be aligned and placed on the crossbeams 2. Compared with Figure 2 the crossbeams 2 with parallel second side surfaces 202 in

[0036] It should be noted that the first side 201 of the above-mentioned quadrangular prism close to the support body 1 is horizontally arranged, which means that when the pad-firing device is placed horizontally, that is, when the plane where the axes of the two cross beams 2 of the frame are located is the horizontal plane, the first side 201 of the cross beam 2 also remains horizontal. Based on the same horizontal placement method of the pad-firing device, the upper part of the second side 202 of the above-mentioned cross beam 2 refers to the part close to the support body 1 as the upper part, and the part of the second side 202 far from the support body 1 is the lower part.

[0037] In addition, a scale (not shown in the figure) is provided on the first side 201 of the cross beam 2. The scale is used to mark the distance between adjacent support bodies 1, which is convenient for users to place the pad-firing parts on the frame more quickly and accurately according to the desired interval according to the scale. The top surface of the support body 1 is used to place a rectangular magnetic core, and a protective layer (not shown in the figure) made of the same material as the rectangular magnetic core is provided. The protective layer is used to prevent the rectangular magnetic core from adhering to the support body 1 after sintering.

[0038] Based on the above pad-firing device, one rectangular magnetic core can be placed on the top surface of each support body, or multiple magnetic cores can be stacked to form a magnetic core stack. When multiple pad-firing devices are stacked, the height of the magnetic core stack on the lower pad-firing device can reach between the two cross beams of the upper pad-firing device, and the highest can reach the distance between the support bodies 1 of the upper and lower pad-firing devices. Correspondingly, the upper pad-firing device can be stacked on the lower pad-firing device in a vertical up-and-down manner. That is to say, the pad-firing device provided by the present invention can provide sufficient space for the placement of the magnetic core stack to further improve the utilization rate of the sintering space.

[0039] In another preferred embodiment of this embodiment, in order to make the overall pad-firing device more stable and prevent the pad-firing device on which the rectangular magnetic core has been placed from shaking during the overall transfer process, such as Figures 4 to 6 shown, a support groove 7 is further provided on the outer side or bottom surface of the cross beam 2. The support groove 7 is used to support the support feet 3.

[0040] Specifically, as Figure 5 shown, when the cross section of the cross beam 2 is rectangular, a horizontal support plate 8 is provided on the bottom surface of the support foot 3. The width of the horizontal support plate 8 is less than or equal to the width of the bottom of the support groove 7, and when the pad-firing part is placed on the frame, the horizontal support plate 8 contacts the bottom of the support groove 7.

[0041] Or as Figure 6As shown, when the cross-section of the cross beam 2 is a parallelogram, the first side surface 201 of the quadrangular prism close to the support body 1 is horizontally arranged, and the distance between the upper parts of the second side surfaces 202 of the two quadrangular prisms facing each other is smaller than the distance between the lower parts, so that the cross sections of the two cross beams 2 are in an inverted V shape. The supporting legs 3 are plate-shaped and parallel to the second side surface 202 of the quadrangular prism, so that the pad firing piece can be aligned and placed on the cross beam 2. A horizontal supporting plate 8 is arranged on the bottom surface of the supporting leg 3. The width of the horizontal supporting plate 8 is smaller than or equal to the width of the bottom of the supporting groove 7. When the pad firing piece 1 is placed on the rack body, the horizontal supporting plate 8 contacts the bottom of the supporting groove 7 to form a more stable support for the pad firing piece.

[0042] Preferably, the lengths of the first longitudinal beam 4 and the second longitudinal beam 5 are both greater than or equal to the distance between the outer side walls 701 of the two supporting grooves. So that when multiple pad firing devices are stacked, the first longitudinal beam 4 and the second longitudinal beam 5 of the lower pad firing device can form a more stable support for the cross beam 2 and the supporting groove 7 of the pad firing device located above it.

[0043] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0045] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A pad sintering device for rectangular magnetic core sintering, characterized in that: It includes a detachably connected frame and at least two cushioning parts; The frame has two parallel crossbeams (2), the pad burning part comprises a supporting body (1), the supporting body (1) is in the shape of a rectangular plate, and two opposite ends of the supporting body (1) are respectively provided with downwardly bent supporting legs (3); During sintering, the sintering pad is placed across two cross beams (2), and the support legs (3) abut against the outer side surfaces of the cross beams (2).

2. The pad burning device according to claim 1, characterized in that: The ends of the cross beam (2) are fixedly connected via longitudinal beams; The longitudinal beam comprises a first longitudinal beam (4) and a second longitudinal beam (5) which are arranged horizontally; the first longitudinal beam (4) is fixedly connected to the first end of the cross beam (2) via a plurality of pillars (6); the second longitudinal beam (5) is fixedly connected to the second end of the cross beam (2) via a plurality of pillars (6); the first end of the pillar (6) is fixedly connected to the cross beam (2), and the second end of the pillar (6) is fixedly connected to the longitudinal beam.

3. The pad burning device according to claim 1, characterized in that: The cross beam (2) is a quadrangular prism with a parallelogram cross section. The quadrangular prism is horizontally arranged close to the first side surface (201) of the supporting body (1), and the spacing between the upper parts of the second side surfaces (202) of the two quadrangular prisms facing each other is smaller than the spacing between the lower parts, so that the cross sections of the two cross beams (2) are in an eight-shaped shape. The support foot (3) is in the shape of a plate parallel to the second side surface (202) of the quadrangular prism, so that the cushioning member can be aligned and placed on the cross beam (2).

4. The pad burning device according to claim 3, characterized in that: The crossbeam (2) is provided with a scale on the first side surface (201) close to the supporting body (1), and the scale is used to indicate the distance between two adjacent supporting bodies (1).

5. The pad burning device according to claim 1, characterized in that: The top surface of the support body (1) is used to place a rectangular magnetic core, and is provided with a protective layer made of the same material as the rectangular magnetic core, wherein the protective layer is used to prevent the rectangular magnetic core from adhering to the support body (1) after sintering.

6. The pad burning device according to claim 2, characterized in that: The outer side surface or the bottom surface of the cross beam (2) is also provided with a support groove (7), and the support groove (7) is used to support the support foot (3).

7. The pad burning device according to claim 6, characterized in that: A horizontal support plate (8) is arranged on the bottom surface of the support foot (3), the width of the horizontal support plate (8) is less than or equal to the width of the bottom of the support groove (7), and when the burning pad is placed on the frame, the horizontal support plate (8) is in contact with the bottom of the support groove (7).

8. The pad burning device according to claim 7, characterized in that: The length of the longitudinal beam is greater than or equal to the distance between the two outer side walls (701) of the supporting grooves.

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