CN113310319A - Magnetic core bearing burning structure - Google Patents
Magnetic core bearing burning structure Download PDFInfo
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- CN113310319A CN113310319A CN202010120257.6A CN202010120257A CN113310319A CN 113310319 A CN113310319 A CN 113310319A CN 202010120257 A CN202010120257 A CN 202010120257A CN 113310319 A CN113310319 A CN 113310319A
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- magnetic core
- burning
- burning bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
- F27D5/0006—Composite supporting structures
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- Furnace Charging Or Discharging (AREA)
Abstract
The invention provides a magnetic core bearing structure, comprising: the sintering plate is in a cuboid flat plate shape, the plurality of sintering plates are respectively used for stacking magnetic core blank matrixes formed by the magnetic core blanks arranged in a matrix array, and the plurality of sintering plates are overlapped in a overlooking mode; the burning bearing column comprises two side plates which mutually form an included angle smaller than or equal to 90 degrees, the burning bearing column is arranged at four corners of the magnetic core blank matrix on the burning bearing plate, and the side plates of the burning bearing column are respectively attached to the adjacent edges of the magnetic core blank matrix and are used for supporting the burning bearing plate on the upper layer. The magnetic core blanks can be partially accommodated in the area of an included angle formed by the side plates of the burning bearing column, so that the burning bearing plates with the same area can bear a larger magnetic core blank matrix, the influence of the burning bearing column on the temperature change rate during sintering is limited to the magnetic core blanks at the corner parts, and the magnetic core blanks are placed into the matrix array, so that automatic conveying can be completed without a complicated mechanical structure during feeding and discharging.
Description
Technical Field
The invention relates to a magnetic core burning bearing structure.
Background
The soft magnetic ferrite has the characteristics of high magnetic conductivity, high resistivity, low loss and the like under high frequency, has the characteristics of easy batch production, stable performance, high machining performance, capability of being made into magnetic cores in various shapes by utilizing a mould, particularly low cost and the like, and can be rapidly popularized and applied to the fields of communication, sensing, audio-video equipment, switching power supplies, magnetic head industries and the like. Particularly, with the continuous progress of science and technology, the demand of soft magnetic ferrite materials is also continuously increased, and the performance requirements are also continuously improved. In recent years, the development of the soft magnetic ferrite industry in China is very rapid, and the market prospect is wide.
The soft magnetic ferrite core is mostly formed by sintering and other processes, taking a manganese-zinc ferrite core as an example, taking Fe2O3, Mn3O4 and ZnO as main raw materials, preparing manganese-zinc power soft magnetic ferrite powder through five procedures of mixing, pre-sintering, coarse crushing, sanding and spray granulation, then adding the manganese-zinc power soft magnetic ferrite powder particles into a forming die, and preparing the soft magnetic ferrite core through the steps of forming, sintering, sorting, grinding, inspecting, packaging and the like.
In the sintering process of the soft magnetic ferrite core, some processing equipment such as a nitrogen kiln has respective strict regulations on kiln speed, loading height, loading capacity and the like in order to ensure safety and stable product quality. Therefore, when the kiln speed is limited, in order to improve the output per unit time, the method of loading the blank material in a multi-layer load structure formed by load bearing columns and load bearing plates and then sintering the blank material at one time is mainly adopted at present.
For example, document 1 (chinese patent, publication No. CN106946044A) discloses a magnetic ring blank arrangement structure after sintering in a kiln, the magnetic ring blank arrangement structure includes at least two layers of magnetic rings 20, each layer of magnetic rings 20 is arranged on a burning board 10 uniformly, and a supporting mechanism is arranged between two adjacent burning boards 10, and the height of the supporting mechanism is slightly higher than the height of the magnetic rings. The burning board 10 is rectangular, and the supporting mechanisms are distributed on the burning columns at four corners of the rectangular burning board. The full-automatic intelligent magnetic ring blank arranging machine comprises a whole blank conveying mechanism, a burning plate sorting and conveying mechanism, a burning column sorting and conveying mechanism and a magnetic ring sorting and conveying mechanism, wherein the whole blank conveying mechanism comprises a first-stage conveying mechanism, a second-stage conveying mechanism and a lifting mechanism, the second-stage conveying mechanism comprises a bearing mechanism and a blank pushing mechanism, a cross area is formed between the tail end of the first-stage conveying mechanism and the initial end of the bearing mechanism, and the blank pushing mechanism is used for pushing the whole magnetic ring blank structure to the lifting mechanism from the cross area along the bearing mechanism.
Although document 1 discloses an automatic sorting, conveying and recycling operation for a whole magnet ring blank structure sintered by a kiln. However, the whole magnet ring blank structure adopts a structure that the four corners of the square burning bearing plate are provided with the columnar burning bearing columns. When the blanks are stacked after firing is finished, since the firing bearing columns occupy the positions of the four corners of the blanks arranged in an array, mechanical claws are required to be designed to grab the firing bearing columns.
Document 2 (chinese patent, publication No. CN204373414U) discloses a magnetic core sintering bearing tool, which includes a rectangular load bearing plate and a pillar, wherein positioning slots for placing the pillar are provided on two sides of four top corners of the load bearing plate, and the overlooking projection of the positioning slots coincides with the overlooking projection of the pillar; the center of constant head tank is equipped with the through-hole, and the central point that the pillar has at least one side puts and is equipped with the inserted bar, and the diameter of inserted bar equals the diameter of through-hole. Also, due to the presence of the pillars, the outermost sides of the blanks arranged in the matrix must be smaller than the range defined by the connecting lines of the pillars, otherwise the blanks cannot be arranged in the matrix. Thus, the utilization rate of the setter is lowered.
In order to solve the above problem, document 3 (chinese patent, publication CN204555701U) discloses an auxiliary enclosure device for sintering a small magnetic ring, which includes a burning board and ferrite magnetic blocks, wherein the burning board is used for placing the small magnetic ring, the ferrite magnetic blocks are provided with a plurality of blocks, the ferrite magnetic blocks of one block are arranged into an enclosure frame enclosing the small magnetic ring inside, and a gap of 5-10mm is left between two adjacent ferrite magnetic blocks. That is, document 3 supports the setter plate by a structure formed by the surrounding frame and the ferrite magnet block. Although in this way, the surrounding frame for sintering does not occupy the corner of the blank matrix, and the utilization rate of the sintering plate can be improved even when the surrounding frame is designed to be thin, since the solid-phase reaction of the blank is affected by the temperature, the temperature rise rate of the blank near the surrounding frame is lower than that of other blanks in the matrix, and the temperature reduction rate is lower than that of other blanks in the matrix, the performance and shape of the blank are affected by the solid-phase reaction rate, and when the blank is a magnetic core material such as ferrite, the effect of the defect is higher than that of other ceramic blanks.
Disclosure of Invention
The invention aims to overcome the defects that the utilization rate of the area of a setter plate is low and the supporting structure of the setter plate is easy to cause the influence on the solid-phase reaction rate of blanks at the edge part of a matrix array in the prior art, and provides a magnetic core setter structure with higher utilization rate of the area of the setter plate and more equal temperature change rate of the blanks.
The invention solves the technical problems through the following technical scheme:
a magnetic core bears fever structure which characterized in that, it includes: the plurality of burning bearing plates are in the shape of rectangular flat plates, are respectively used for stacking magnetic core blank matrixes formed by magnetic core blanks arranged in a matrix array, and are overlapped in a overlooking mode; the burning column comprises two side plates which form an included angle smaller than or equal to 90 degrees, the burning column is arranged on the burning plate on the four corners of the magnetic core blank matrix, and the side plates of the burning column are respectively attached to the adjacent edges of the magnetic core blank matrix and used for supporting the burning plate on the upper layer. Because the burning bearing column is provided with the side plates forming the included angle, the magnetic core blanks on the four corners of the magnetic core blank matrix can be partially accommodated in the region of the included angle, so that the burning bearing plate with the same area can bear a larger magnetic core blank matrix. Meanwhile, the firing bearing columns are only arranged at the corners of the magnetic core blank matrix, so that the influence of the firing bearing columns on the temperature change rate during sintering is only limited to the magnetic core blanks at the corners, and the yield of products can be greatly improved. Because the magnetic core blanks are arranged into a matrix array, the automatic conveying can be completed without a complicated mechanical structure during feeding and discharging.
Preferably, a circular arc-shaped joint portion is formed at a joint of the two side plates of the burning bearing column, and the magnetic core blank is in a cube shape. Therefore, a certain space is formed between the arc-shaped joint part and the cubic-shaped magnetic core blank, so that the magnetic core blank can be directly contacted with air in the kiln through the space, and the temperature change rate of the magnetic core blank is less influenced by the burning bearing column.
Preferably, the burning bearing column is made of corundum. Therefore, more stable supporting capability can be provided for the burning bearing column.
Preferably, the included angle formed by the side plates of the burning bearing column is smaller than 90 degrees. In this way, even if the firing pillars and the cubic core material are displaced from each other by a certain amount due to a tolerance, a sufficient space can be formed between the firing pillars and the core material so that the core material can come into contact with air (air here is understood to be gas in the furnace space, and nitrogen in the case of a nitrogen furnace).
Preferably, the position where the side plate contacts with the magnetic core blank is set to be arc-shaped. In this way, the contact area between the side surface of the cubic core material and the side plate can be minimized in each case by the arc-shaped contact position, and the contact surface between the core material and the air can be further increased.
Preferably, the side plates of the burning bearing column are perpendicular to the burning bearing plate, and the distance from the magnetic core blank matrix to the frame of the burning bearing plate is greater than or equal to 10 mm.
The positive progress effects of the invention are as follows: magnetic core blank on four angles of magnetic core blank matrix can partially hold in the region of the contained angle that holds the formation of fever post curb plate for the board that holds fever of the same area can bear bigger magnetic core blank matrix, and make the influence of holding fever post temperature change rate when sintering only be limited in the magnetic core blank of above-mentioned bight, can promote the yield of product by a wide margin, in addition, because the magnetic core blank is put into matrix array, make when material loading and unloading need not complicated mechanical structure also can accomplish automatic the transportation.
Drawings
Fig. 1 is a side view of a magnetic core burning structure according to a preferred embodiment of the present invention.
FIG. 2 is a top view of a layer of a core setter structure according to a preferred embodiment of the present invention.
FIG. 3 is a schematic structural view of a load-bearing pillar according to a preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the firing post and the magnetic core blank in cooperation according to the preferred embodiment of the invention.
FIG. 5 is a schematic structural view of another embodiment of the present invention in which the load post is engaged with the magnetic core blank.
FIG. 6 is a schematic structural view of another burning pillar according to the preferred embodiment of the present invention.
Fig. 7 is a schematic structural view illustrating another firing post and a magnetic core blank according to a preferred embodiment of the invention.
Detailed Description
The invention will be more clearly and completely described by way of example in the following with reference to the accompanying drawings.
Fig. 1 is a side view of the magnetic core burning structure of the present embodiment, fig. 2 is a top view of one layer of the magnetic core burning structure of the present embodiment, and fig. 3 is a schematic structural view of the burning column of the present embodiment. As shown in FIGS. 1-3, the magnetic core burning-supporting structure of the present embodiment includes: a plurality of burning plates 30 and burning columns 10.
The setter 30 has a rectangular parallelepiped plate shape, and the plurality of setters 30 are used for stacking a magnetic core blank matrix formed by the magnetic core blanks 20 arranged in a matrix array, and the plurality of setters 30 are overlapped in a plan view.
The burning column 10 comprises two side plates 11 and 12 which form an included angle smaller than or equal to 90 degrees, and the burning columns with different included angles of the side plates can be prefabricated according to the specific shape of the magnetic core blank 20. The burning-supporting columns 10 are arranged at four corners of the magnetic core blank matrix on the burning-supporting plate 30, and side plates of the burning-supporting columns 10 are respectively attached to adjacent edges of the magnetic core blank matrix and used for supporting the burning-supporting plate 30 on the upper layer. Since the load bearing columns 10 have side plates with included angles, the magnetic core blanks 20 at the four corners of the magnetic core blank matrix can be partially accommodated in the area of the included angles, so that the load bearing plates 30 of the same area can bear a larger magnetic core blank matrix. Meanwhile, since the burning-bearing columns 10 are only arranged at the corners of the magnetic core blank matrix, the influence of the burning-bearing columns on the temperature change rate during sintering is only limited to the magnetic core blanks 20 at the corners, so that the yield of products can be greatly improved, and the quality difference caused by the difference of solid phase reaction rates can be reduced. Because the magnetic core blanks 20 are arranged in the matrix array, the automatic conveying can be completed without a complicated mechanical structure during the feeding and the blanking.
The junction of the two side plates of the burning column 10 is formed with a circular arc-shaped junction, and the shape of the magnetic core blank 20 is a cube. Thus, a space is formed between the circular arc-shaped joint portion and the cubic core blank 20, so that the core blank 20 can directly contact with the air in the kiln through the space, and the temperature change rate of the core blank is less affected by the burning column 10.
Specifically referring to fig. 4 and 5, fig. 4 and 5 are schematic structural diagrams of two cases when the setter pillar of the present embodiment is combined with the magnetic core blank, and since the magnetic core blank 20 is formed in a cube, the corner portions of the magnetic core blank 20 collide with the joint portion 13 or other portions of the setter pillar 10 due to the existence of the arc-shaped joint portion 13, thereby generating spaces such as the voids 21 and 22 when the setter pillar is placed. During sintering, hot air enters the recesses 21, 22, so that even the magnetic blank located at the corners of the matrix is still sufficiently exposed to the hot air. Of course, when the shape of the core blank is different (e.g., has rounded corners, or the like), the arc curvature, size, or lack thereof of the engaging portion 13 may be adjusted.
The setter cylinder 10 is made of corundum. Thereby, a more stable supporting capability can be provided for the setter pillar 10.
In this embodiment, the burning pillar 10 may also be prefabricated into a shape in which an included angle formed by the side plates 11 and 12 is smaller than 90 degrees. Thus, even if the position of the burning column 10 and the cubic core material 20 is shifted by a certain tolerance, a sufficient space can be formed between the burning column 10 and the core material 20 so that the core material 20 can contact air (air in this embodiment is understood to be gas in the furnace space, and nitrogen in the case of a nitrogen furnace).
The contact position 14 between the side plate 11 and the core material 20 is formed in an arc shape. This makes it possible to minimize the contact area between the side surface of the cubic core material 20 and the side plate in each case, thereby further improving the contact surface between the core material 20 and the air.
Specifically, referring to fig. 6 to 7, fig. 6 is a schematic structural diagram of another burning column of the present embodiment, and fig. 7 is a schematic structural diagram of another burning column of the present embodiment when being matched with a magnetic core blank. Because the side plates 11 and 12 have an included angle therebetween, when the core blank 20 comes into contact with the side plates, the side plates are easily attached to one side of the core blank and collide with the other side of the core blank to form the gap 23, and thus, the edge of the end surface of the side plate facing the one side of the core blank can be set to be formed in an arc shape as the contact position 14. Likewise, the two side plates can be provided with circular arc-shaped edges. The two kinds of burning-supporting columns related to the embodiment can be selected and used in a targeted manner when the sizes and the appearances of the magnetic core blanks are different, and in other embodiments, different burning-supporting columns can be arranged by matching with the magnetic core blanks in different shapes by adopting the same principle.
In addition, the side plates of the burning column 10 are perpendicular to the burning plate 30, and the distance from the magnetic core blank matrix to the frame of the burning plate 30 is greater than or equal to 10 mm.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (6)
1. A magnetic core bears fever structure which characterized in that, it includes:
the plurality of burning bearing plates are in the shape of rectangular flat plates and are respectively used for stacking magnetic core blank matrixes formed by magnetic core blanks arranged in a matrix array, and
the plurality of burning bearing plates are overlapped in a overlooking mode;
the burning bearing column comprises two side plates which mutually form an included angle less than or equal to 90 degrees,
the burning bearing columns are arranged on the burning bearing plates at four corners of the magnetic core blank matrix, and the side plates of the burning bearing columns are respectively attached to the adjacent edges of the magnetic core blank matrix and used for supporting the burning bearing plate on the upper layer.
2. The magnetic core burning-in structure of claim 1,
the joint of the two side plates of the burning bearing column is provided with a joint part in the shape of a circular arc,
the magnetic core blank is cubic in shape.
3. The magnetic core burning-in structure of claim 2,
the firing bearing column is made of corundum.
4. The magnetic core burning-in structure of claim 3,
the included angle formed by the side plates of the burning bearing column is smaller than 90 degrees.
5. The magnetic core burning-in structure of claim 4,
the position of the side plate, which is in contact with the magnetic core blank, is set to be arc-shaped.
6. The magnetic core burning-in structure of claim 5,
the side plates of the burning bearing columns are perpendicular to the burning bearing plates, and the distance from the magnetic core blank matrix to the frame of the burning bearing plates is larger than or equal to 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120257.6A CN113310319A (en) | 2020-02-26 | 2020-02-26 | Magnetic core bearing burning structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010120257.6A CN113310319A (en) | 2020-02-26 | 2020-02-26 | Magnetic core bearing burning structure |
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| Publication Number | Publication Date |
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| CN113310319A true CN113310319A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010120257.6A Pending CN113310319A (en) | 2020-02-26 | 2020-02-26 | Magnetic core bearing burning structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121472A (en) * | 2021-11-15 | 2022-03-01 | 海宁华悦电子有限公司 | Sintering process of ferrite magnetic core |
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2020
- 2020-02-26 CN CN202010120257.6A patent/CN113310319A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114121472A (en) * | 2021-11-15 | 2022-03-01 | 海宁华悦电子有限公司 | Sintering process of ferrite magnetic core |
| CN114121472B (en) * | 2021-11-15 | 2024-05-24 | 海宁华悦电子有限公司 | Sintering process of ferrite core |
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