CN107424826A - A kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core - Google Patents
A kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core Download PDFInfo
- Publication number
- CN107424826A CN107424826A CN201710772133.4A CN201710772133A CN107424826A CN 107424826 A CN107424826 A CN 107424826A CN 201710772133 A CN201710772133 A CN 201710772133A CN 107424826 A CN107424826 A CN 107424826A
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- CN
- China
- Prior art keywords
- magnetic core
- mould
- conjuncted
- flat
- efd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/08—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould
- B28B3/086—The rams working in different directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0097—Press moulds; Press-mould and press-ram assemblies
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core, including die cavity, upper die and lower die and plug, the E font cavitys that two flat EFD type ferrites magnetic cores lean against disjunctor can be formed after die cavity, upper die and lower die and plug matched moulds.The advantage of the invention is that：Its lower mould that is mainly characterized by of conjuncted compressing method is made up of middle push rod and side push rod, is fixed on same pedestal, middle push rod and Bian Ding leave the incisory half slot of corresponding blank；Advantageously, the tolerance of finished size can be effectively controlled for control compared with traditional technology to deformation of products.
Description
Technical field
The present invention relates to a kind of magnetic core technical field, especially a kind of conjuncted shaping mould of flat EFD type ferrites magnetic core
Tool and its method for forming.
Background technology
EFD type ferrites magnetic core due to its window area is big, product is thin, output power, suitable for surface mount the features such as,
It is widely used in all kinds of flat surface transformers, applies especially in LED television backlight driver transformer and more popularize.In recent years
With the rapid growth of LED backlight TV market, such ferrite product dosage is increasing.But because EFD types magnetic core uses
The newel design thinner than side pin, and core size is general all larger, plus thickness of thin, dimensional tolerance is small, flatness requirement
The features such as high, if using traditional briquetting process, when magnetic core is molded, Density Distribution is uneven, and magnetic core is excessively thin to be held
The stress received is small, is easily deformed in sintering, causes dimension overproof -1J.So on the basis of material property is stable, improve pressure
Raising of the technique processed to E M type magnetic core performances and finished product rate play the role of it is very important, to reduce production cost improve
Economic benefit is also significant.Herein by a series of advantage and disadvantage of research drawing methods of EFD type ferrite magnetic cores, finally carry
A kind of brand-new briquetting process is gone out, i.e., conjuncted compressing method, EFD type products has been greatly improved using the conjuncted method of forming
Production efficiency, and the problems such as EFD type magnetic cores are yielding can be improved.
The content of the invention
It is an object of the invention to provide the flat EFD type ferrites that a kind of reliability is high, forming operation is simple, mill is easy to process
The conjuncted mould and its method for forming of magnetic core, solve one or more in above-mentioned prior art problem.
In order to solve the above technical problems, the technical scheme is that：A kind of flat EFD type ferrites magnetic core it is conjuncted into
Pattern has, and its innovative point is：, can shape after die cavity, upper die and lower die and plug matched moulds including die cavity, upper die and lower die and plug
The E font cavitys of disjunctor are leaned against into two flat EFD type ferrites magnetic cores.
A kind of conjuncted method of forming of flat EFD type ferrites magnetic core, its innovative point are：Comprise the following steps：
1) magnetic core raw material first, is filled into mould cavity；
2) upper die and lower die are extruded by two-way mechanical press simultaneously again；
3) contraction is sintered again；
4) after being molded, required finished product is polished into cutting.
In some embodiments, in step 1) during filling magnetic core raw material, the two side legs and newel of E font cavitys are equal
Downwards.
The advantage of the invention is that：Conjuncted compressing method is mainly characterized by its lower mould by middle push rod and side push rod group
Into being fixed on same pedestal, middle push rod and Bian Ding leave the corresponding incisory half slot of blank；Compared with traditional technology pair
Advantageously, the tolerance of finished size can be effectively controlled for the control of deformation of products；It is it is to be particularly noted that improved
One bright spot of body formed method is that the flatness of product improves, and product is lain on a datum plane, and gap will therewith
Production capacity less than 0.1mm, and separate unit press improves more than one times；Compared with traditional pressing methods, the improved conjuncted method of forming is superior
Property is embodied in following several respects：Conjuncted E fonts are leaned against for two products after shaping, product Integral upset, overally support power
Greatly improve, magnetic core is born bigger stress in sintering shrinkage；Product density in compacting is caused to be easily controlled simultaneously
And distribution is more uniform, so as to efficiently control the problem on deformation of product, improves yield rate.
Brief description of the drawings
Fig. 1 is a kind of sectional view of the conjuncted mould of flat EFD type ferrites magnetic core.
Embodiment
With reference to Figure of description, the present invention is described in more detail.
A kind of conjuncted mould of flat EFD type ferrites magnetic core as shown in Figure 1, including die cavity 1, upper mould 2, lower mould
3 and plug 4, two flat EFD type ferrites magnetic cores can be formed after die cavity 1, upper mould 2, lower mould 3 and the matched moulds of plug 4 and lean against company
The E fonts cavity 5 of body.
A kind of conjuncted method of forming of flat EFD type ferrites magnetic core, comprises the following steps：
1) magnetic core raw material first, is filled into mould cavity；
2) upper mould 2 and lower mould 3 are extruded by two-way mechanical press simultaneously again；
3) contraction is sintered again；
4) after being molded, required finished product is polished into cutting.
In some embodiments, in step 1) during filling magnetic core raw material, the two side legs and newel of E fonts cavity 5
Downwards.
The advantage of the invention is that：Conjuncted compressing method is mainly characterized by its lower mould 3 by middle push rod and side push rod
Composition, is fixed on same pedestal, and middle push rod and Bian Ding leave the incisory half slot of corresponding blank；Compared with traditional technology
Advantageously, the tolerance of finished size can be effectively controlled for control to deformation of products；It is it is to be particularly noted that improved
One bright spot of conjuncted forming method is that the flatness of product improves, and product is lain on a datum plane, therewith gap
It is less than 0.1mm, and the production capacity of separate unit press improves more than one times；Compared with traditional pressing methods, the improved conjuncted method of forming is excellent
More property is embodied in following several respects：After shaping conjuncted E fonts, product Integral upset, integrated support are leaned against for two products
Power greatly improves, and magnetic core is born bigger stress in sintering shrinkage；Product density in compacting is caused easily to control simultaneously
Make and be distributed more uniformly, so as to efficiently control the problem on deformation of product, improve yield rate.
The scope of the present invention is defined by the appended claims and its equivalents.Described above is only the present invention
Preferred embodiment, it is noted that to those skilled in the art, do not departing from the invention design premise
Under, some similar modification and improvement can also be made, these also should be regarded as within protection scope of the present invention.
Claims (3)
- A kind of 1. conjuncted mould of flat EFD type ferrites magnetic core, it is characterised in that：Including die cavity (1), upper mould (2), under Mould (3) and plug (4), two flat EFD can be formed after the die cavity (1), upper mould (2), lower mould (3) and plug (4) matched moulds Type ferrite magnetic core leans against the E fonts cavity (5) of disjunctor.
- A kind of 2. conjuncted method of forming of flat EFD type ferrites magnetic core, it is characterised in that：Comprise the following steps：1) magnetic core raw material first, is filled into mould cavity；2) upper mould (2) and lower mould (3) are extruded simultaneously by two-way mechanical press again；3) contraction is sintered again；4) after being molded, required finished product is polished into cutting.
- A kind of 3. conjuncted method of forming of flat EFD type ferrites magnetic core according to claim 2, it is characterised in that：Step 1) in during filling magnetic core raw material, the two side legs and newel of E fonts cavity (5) are downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710772133.4A CN107424826A (en) | 2017-08-31 | 2017-08-31 | A kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710772133.4A CN107424826A (en) | 2017-08-31 | 2017-08-31 | A kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107424826A true CN107424826A (en) | 2017-12-01 |
Family
ID=60435486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710772133.4A Pending CN107424826A (en) | 2017-08-31 | 2017-08-31 | A kind of conjuncted mould and its method for forming of flat EFD type ferrites magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107424826A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483034A (en) * | 2020-05-25 | 2020-08-04 | 南通华兴磁性材料有限公司 | Forming method of flat ultra-thin manganese-zinc ferrite magnetic core |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151831A (en) * | 2011-03-17 | 2011-08-17 | 越峰电子（昆山）有限公司 | Improved magnetic core forming die |
| CN201989218U (en) * | 2011-03-08 | 2011-09-28 | 天通控股股份有限公司 | Molding mold of flat ferrite magnetic core |
| CN102218768A (en) * | 2011-04-22 | 2011-10-19 | 江门安磁电子有限公司 | Forming die of Mn-Zn soft magnetic ferrite magnetic core |
| CN202291399U (en) * | 2011-09-01 | 2012-07-04 | 南通华兴磁性材料有限公司 | EER type manganese-zinc ferrite magnetic core mold |
| CN205542377U (en) * | 2015-12-15 | 2016-08-31 | 上海宝钢磁业有限公司 | Conjuncted manganese zinc ferrite core blank |
| CN106683866A (en) * | 2016-12-19 | 2017-05-17 | 江西尚朋电子科技有限公司 | Preparation method of eccentric magnetic core component of soft magnetic ferrite |
-
2017
- 2017-08-31 CN CN201710772133.4A patent/CN107424826A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201989218U (en) * | 2011-03-08 | 2011-09-28 | 天通控股股份有限公司 | Molding mold of flat ferrite magnetic core |
| CN102151831A (en) * | 2011-03-17 | 2011-08-17 | 越峰电子（昆山）有限公司 | Improved magnetic core forming die |
| CN102218768A (en) * | 2011-04-22 | 2011-10-19 | 江门安磁电子有限公司 | Forming die of Mn-Zn soft magnetic ferrite magnetic core |
| CN202291399U (en) * | 2011-09-01 | 2012-07-04 | 南通华兴磁性材料有限公司 | EER type manganese-zinc ferrite magnetic core mold |
| CN205542377U (en) * | 2015-12-15 | 2016-08-31 | 上海宝钢磁业有限公司 | Conjuncted manganese zinc ferrite core blank |
| CN106683866A (en) * | 2016-12-19 | 2017-05-17 | 江西尚朋电子科技有限公司 | Preparation method of eccentric magnetic core component of soft magnetic ferrite |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111483034A (en) * | 2020-05-25 | 2020-08-04 | 南通华兴磁性材料有限公司 | Forming method of flat ultra-thin manganese-zinc ferrite magnetic core |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171201 |