CN202895423U - EFD type manganese zinc ferrite magnetic core mold - Google Patents
EFD type manganese zinc ferrite magnetic core mold Download PDFInfo
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- CN202895423U CN202895423U CN 201220393577 CN201220393577U CN202895423U CN 202895423 U CN202895423 U CN 202895423U CN 201220393577 CN201220393577 CN 201220393577 CN 201220393577 U CN201220393577 U CN 201220393577U CN 202895423 U CN202895423 U CN 202895423U
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- mold
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- zinc ferrite
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Abstract
The utility model discloses an EFD type manganese zinc ferrite magnetic core mold which comprises a concave mold, an upper convex mold, a lower convex mold and fixing plates for an upper mold and a lower mold. A first convex block and a second convex block are symmetrically arranged on two sides of a pressure head of the upper convex mold. The lower convex mold is composed of a lower convex mold core cylinder and a lower convex mold side cylinder. A third convex block and a fourth convex block are arranged on the upper surface of the lower convex mold core cylinder and are arranged in a symmetrical mode. The EFD type manganese zinc ferrite magnetic core mold solves the problems of torsion and deformation of a complicated magnetic core and has the advantages of improving the rate of qualified products, reducing the number of wasted and disqualified products and reducing consumption and energy consumption.
Description
Technical field
The utility model relates to FERRITE CORE production equipment technical field, is specifically related to a kind of EFD type manganese-zinc ferrite core mould.
Background technology
Along with domestic and international electronic product update speed is accelerated, standard and requirement to electronic device and electronic transformer are more and more high, the power transformer design is towards high efficiency, light and thin type, miniaturization development, this brings certain difficulty for the manganese-zinc ferrite core manufacturing processing that is used for the transformer coil product, its structure becomes increasingly complex, and dimension precision requirement is high.EFD type manganese-zinc ferrite core is exactly a for high definition flat panel TV, power transformer magnetic core, this core structure is complicated, be flat, wall is thin, and manganese-zinc ferrite core is to adopt the ceramic process working system, its production procedure is the processes such as moulding, sintering, mill processing, can the magnetic core of producing be complementary with transformer coil, and key is molding procedure, and the qualified blank key of moulding is mould.Because the EFD magnetic core belongs to the complexity product, be flat, have the characteristics such as low profile and wall are thin, therefore, defective in the product maximum of producing is distortion, pin up and down out of plumb in both sides is arranged usually, opening shelves is not to be exactly greatly little, be out of shape serious also can twisting by magnetic core, hogback, newel and both sides pin be same plane not, causes product percent of pass not high, directly affects the economic benefit of enterprise, simultaneously also bring unnecessary trouble to the user, and the reason of distortion is because blank density is inhomogeneous, in the existing production technology, and EFD4649 magnetic core press-molding pressure: 3.2t/cm
2, frequency: 16 beats/mins, particulate material apparent density: 1.46-1.50g/cm
3, compressing green density is at 3.08-3.10 g/cm
3Between, and find in the actual production that the moulding green compact have partial density on the low side, the not enough or magnetic core on the low side through all green densities of kiln sintering all has in various degree distortion.Analyze the magnetic core deformation place: 1. magnetic core both sides pin introversion; 2. the magnetic core base plate is bent over; 3. core center post and base plate connecting portion hogback.By the EFD4649 green compact being carried out its density of sectionalization test, find that both sides pin density is at 3.09-3.10 g/cm
3Up to standard, newel density only is 3.04-3.07 g/cm
3On the low side, magnetic core base plate density 3.05-3.07 g/cm
3On the low side.
The utility model content
The utility model purpose: the purpose of this utility model is in order to remedy the deficiencies in the prior art, a kind of EFD type manganese-zinc ferrite core mould to be provided.
Technical scheme: a kind of EFD type manganese-zinc ferrite core mould, comprise die, upper male mould, lower punch, upper and lower mould fixed head, the both sides of the pressure head of described upper male mould respectively are provided with the first symmetrical projection and the second projection, described lower punch is comprised of lower punch stem stem and lower punch side column, and described lower punch stem stem is provided with the 3rd projection and the 4th projection.
As preferably, the upper surface of described lower punch stem stem is provided with the 3rd projection and the 4th projection, and described the 3rd projection and the 4th projection are symmetrical mutually.
A kind of magnetic core, described magnetic core are " mountain " font, are comprised of limit pin and the bottom surface of newel, newel both sides, and described newel and limit pin all are arranged on the bottom surface.
Beneficial effect: the utility model has adopted after such structure, efficiently solve distortion, the problem on deformation of complexity magnetic core, thereby improved the percentage of A-class goods of product, useless, substandard products number have been reduced, reduce and consume, reduce energy consumption, product percent of pass is risen between the 90%-95% by original 65%-70%.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 3 is the structural representation of upper male mould in the utility model;
Accompanying drawing 4 is EFD magnetic core schematic diagram.
The specific embodiment
A kind of EFD type manganese-zinc ferrite core mould, comprise die 1, upper male mould 2, lower punch 3, upper and lower mould fixed head, the both sides of the pressure head of upper male mould 2 respectively are provided with the first symmetrical projection 21 and the second projection 22, lower punch 3 is comprised of lower punch stem stem 31 and lower punch side column 32, and lower punch stem stem 31 is provided with the 3rd projection 311 and the 4th projection 312.It is symmetrical mutually that the upper surface of lower punch stem stem 31 is provided with the 3rd projection 311 and the 4th projection 312, the three projections 311 and the 4th projection 312.By the magnetic core that the utility model manufactures, magnetic core is " mountain " font, by the limit pin 51 of newel 4, newel both sides; 52 and bottom surface 6 form newel 4 and limit pin 51; 52 all are arranged on the bottom surface 6.The upper male mould pressure head was the plane originally, core center post both sides respectively increase a projection now, increase powder, local pressure increases, thereby reaches the purpose that increases base plate density, the lower punch stem stem is improved, the lower punch stem stem was that the plane changes the local crowning shape now into originally, and the projection of two symmetries is set, and increased its local pressure, be conducive to improve newel density, so that newel density and magnetic core both sides pin consistent in density.So, base substrate just can avoid occurring the magnetic core distortion that causes because of Density inhomogeneity.
Claims (2)
1. EFD type manganese-zinc ferrite core mould, comprise die (1), upper male mould (2), lower punch (3), upper and lower mould fixed head, it is characterized in that: the both sides of the pressure head of described upper male mould (2) respectively are provided with symmetrical the first projection (21) and the second projection (22), described lower punch (3) is comprised of lower punch stem stem (31) and lower punch side column (32), and described lower punch stem stem (31) is provided with the 3rd projection (311) and the 4th projection (312).
2. EFD type manganese-zinc ferrite core mould as claimed in claim 1, it is characterized in that: the upper surface of described lower punch stem stem (31) is provided with the 3rd projection (311) and the 4th projection (312), and described the 3rd projection (311) and the 4th projection (312) are symmetrical mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393577 CN202895423U (en) | 2012-08-10 | 2012-08-10 | EFD type manganese zinc ferrite magnetic core mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220393577 CN202895423U (en) | 2012-08-10 | 2012-08-10 | EFD type manganese zinc ferrite magnetic core mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202895423U true CN202895423U (en) | 2013-04-24 |
Family
ID=48116133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220393577 Expired - Lifetime CN202895423U (en) | 2012-08-10 | 2012-08-10 | EFD type manganese zinc ferrite magnetic core mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202895423U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707400A (en) * | 2013-12-17 | 2014-04-09 | 江苏省晶石磁性材料与器件工程技术研究有限公司 | Mold for preventing EC-shaped manganese zinc ferrite from extending and deforming |
| CN105149579A (en) * | 2015-09-16 | 2015-12-16 | 张家港比迪凯磁技有限公司 | Es magnetic core mould |
| CN105437357A (en) * | 2015-12-22 | 2016-03-30 | 南通华兴磁性材料有限公司 | Manganese zinc ferrite core forming mold |
-
2012
- 2012-08-10 CN CN 201220393577 patent/CN202895423U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707400A (en) * | 2013-12-17 | 2014-04-09 | 江苏省晶石磁性材料与器件工程技术研究有限公司 | Mold for preventing EC-shaped manganese zinc ferrite from extending and deforming |
| CN105149579A (en) * | 2015-09-16 | 2015-12-16 | 张家港比迪凯磁技有限公司 | Es magnetic core mould |
| CN105437357A (en) * | 2015-12-22 | 2016-03-30 | 南通华兴磁性材料有限公司 | Manganese zinc ferrite core forming mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |