CN101937765B - Manufacturing method of inductor - Google Patents
Manufacturing method of inductor Download PDFInfo
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- CN101937765B CN101937765B CN2010101574429A CN201010157442A CN101937765B CN 101937765 B CN101937765 B CN 101937765B CN 2010101574429 A CN2010101574429 A CN 2010101574429A CN 201010157442 A CN201010157442 A CN 201010157442A CN 101937765 B CN101937765 B CN 101937765B
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- inductor
- compression molding
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- molding
- pins
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Abstract
The invention discloses a manufacturing method of an inductor, comprising the following steps of: winding a coil, forming pins, tinning the pins, proportioning, feeding, molding and forming, bending the pins and spraying codes, wherein in the molding and forming step, a winding body comprising the winded coil is arranged into a molding and forming groove, the pins of the winding body extend out of the molding and forming groove, and then, metal magnetic powder is added into the molding and forming groove to carry out die-casting treatment. The manufacturing method of the inductor has the advantages of low production cost, high automation degree and high production efficiency. The inductor is formed by using the low-loss alloy system magnetic powder and the full-shielding die-casting process, and the inductance can effectively avoid noise production.
Description
Technical field
The present invention relates to a kind of manufacture method of inductor, relate in particular to a kind of preparation method of low sense value inductor.
Background technology
At present; Conventional power inductor production technology is to choose the ferrite magnetic core material; Adopt in the manual work and expect the coiling of the enterprising column rule circle of semiautomatic winding machine; Pass through a series of technologies such as electrode is bonding, immersed solder, some glue, assembling again and make formation power inductor element, this manufacture craft mainly relies on manual work, automation is low, production cost is high, efficient is low.
Summary of the invention
The technical problem that the present invention will solve provides the manufacture method of the inductor that a kind of production cost is low, automaticity is high, production efficiency is high.
The technical problem that the present invention will solve realizes through following technical scheme: a kind of manufacture method of inductor; Comprise tin, batching, material loading, compression molding, bending pins, coding technology on coil winding, pin moulding, the pin; Described compression molding is that the winding body of being made up of coiled wire-wound coil is put into the compression molding groove; The pin of winding body reaches outside the compression molding groove, adds the metal magnetic powder at the compression molding groove then and carries out the die casting processing.
Further: in the manufacture method of above-mentioned inductor, said compression molding also comprises the outside that pin is reached the magnetic core pedestal that is formed by the powder compacting, forms the electrode tip of this inductor.Described coiling is the copper cash that adopts flat or toroidal.
The weight percentage of said magnetic is that carbonyl iron dust accounts for 85～93%, and the alloy iron powder accounts for 7～15%.Described carbonyl iron dust is to react under HTHP through CO and iron, generates 5 carbonyl iron grease, after low pressure is separated, obtains product.Said alloy iron powder is to be that the titanium alloy liquid metal that other elements of base adding are formed adopts atomizing, rotation electrode or vacuum decompression to be atomized into powder with the titanium.
Compared with prior art; Inductor coil and powder one compression molding production technology mainly are power inductor winding body to be imbedded the inner die casting of metal magnetic powder form; The SMD pin is that the leading foot direct forming of winding body is surperficial in pedestal, the novelty of technology and the advanced terminator who very likely becomes traditional type winding-type power inductance production technology.The power inductance product that adopts one compression molding production technology to make can be widely used in computer main board, power supply unit, video card, DC-DC rectification or buck conversion on the power circuits such as single-chip microcomputer, power distribution system and VRM Voltage Regulator Module.
Otherwise effective technique effect of the present invention is:
1, adopt coil and powder one compression molding production technology to substitute traditional winding-type power inductance production technology, production cost is low, automaticity is high, production efficiency is high.
2, electrode terminal adopts flat or circular copper cash; The leading foot direct forming of the winding body of coiled coil gained is in the pedestal surface again; Change traditional winding-type power inductor electrode terminal and separate, need to lean on the traditional processing technology of artificial bonding assembling with the magnetic core pedestal.
3, use low-loss alloy system Magnaglo and the moulding of full-shield extrusion process, its inductance can effectively avoid noise to produce.
4, low sense value inductance coil can adopt unique flatwise coil frame mode design, low-loss, the anti-electric current (25～100A) of super large.
Embodiment
Purport of the present invention is to substitute traditional winding-type power inductance production technology through employing coil and powder one compression molding production technology, and production cost is low, automaticity is high, production efficiency is high.Below in conjunction with embodiment content of the present invention is done further to detail, mentioned content is not to qualification of the present invention among the embodiment, and Selection of technological conditions such as temperature, time can be suited measures to local conditions and the result is not had substantial effect among the preparation method.
A kind of manufacture method of inductor; Comprise tin, batching, material loading, compression molding, bending pins, coding technology on coil winding, pin moulding, the pin; Described compression molding is that the winding body of being made up of coiled wire-wound coil is put into the compression molding groove; The pin of winding body reaches outside the compression molding groove, adds the metal magnetic powder at the compression molding groove then and carries out the die casting processing.Said compression molding also comprises the outside that pin is reached the magnetic core pedestal that is formed by the powder compacting, forms the electrode tip of this inductor.Described coiling is the copper cash that adopts flat or toroidal.
Made HA series power inductor with the manufacture method of above-mentioned inductor, for example model is HA125-1ROMT, and the product size precision is high, and is as described in Table 1, and good electric property is as shown in table 2.
Table 1: the size of product:
| Model PART | A | B | C |
| HA125-1ROMT | 13.2±0.5 | 12.6±0.3 | 6.5MAX |
Table 2: electric parameter:
| Model | Inductance value (μ H) | Error | Test frequency | Maximum D.C. resistance (m Ω) | The anti-electric current of super large (A) |
| HA125-1ROMT | 1.00 | ±20％ | 100kHz | ?2.50 | 26 |
Claims (2)
1. the manufacture method of an inductor comprises tin, batching, material loading, compression molding, bending pins, coding technology on coil winding, pin moulding, the pin, it is characterized in that:
Described compression molding is that the winding body of being made up of coiled wire-wound coil is put into the compression molding groove, and the pin of winding body reaches outside the compression molding groove, adds the metal magnetic powder at the compression molding groove then and carries out the die casting processing;
The weight percentage of said magnetic is that carbonyl iron dust accounts for 85～93%, and the alloy iron powder accounts for 7～15%;
Described coiling is to adopt flat copper wire.
2. the manufacture method of inductor according to claim 1 is characterized in that: said compression molding also comprises the outside that pin is reached the magnetic core pedestal that is formed by the powder compacting, forms the electrode tip of this inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101574429A CN101937765B (en) | 2010-04-26 | 2010-04-26 | Manufacturing method of inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101574429A CN101937765B (en) | 2010-04-26 | 2010-04-26 | Manufacturing method of inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101937765A CN101937765A (en) | 2011-01-05 |
| CN101937765B true CN101937765B (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101574429A Active CN101937765B (en) | 2010-04-26 | 2010-04-26 | Manufacturing method of inductor |
Country Status (1)
| Country | Link |
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| CN (1) | CN101937765B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109964548B (en) * | 2016-11-17 | 2021-08-27 | Lg伊诺特有限公司 | DC-DC converter |
| CN110895989A (en) * | 2018-08-23 | 2020-03-20 | 广东理标信息科技有限公司 | Integrally formed inductor and manufacturing method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239807A (en) * | 1998-06-18 | 1999-12-29 | 株式会社村田制作所 | Method of manufacturing bead inductor and the beand inductor produced thereby |
| CN1304145A (en) * | 2000-01-12 | 2001-07-18 | Tdk株式会社 | Manufacturing method for coil embedded compressed-core and coil embedded compressed-core |
| CN1321991A (en) * | 2000-04-28 | 2001-11-14 | 松下电器产业株式会社 | Composite magnetic body, magnetic element and mfg. method thereof |
| CN1372272A (en) * | 2001-02-21 | 2002-10-02 | Tdk株式会社 | Coil closed moulded powder core and method for making same |
| CN1862720A (en) * | 2006-05-19 | 2006-11-15 | 北京七星飞行电子有限公司 | Coil embedded metal magnetic powder core chip inductor |
| CN101004965A (en) * | 2006-01-16 | 2007-07-25 | 台达电子工业股份有限公司 | Internal embedded type inductive structure and its producing method |
| CN201007943Y (en) * | 2007-01-23 | 2008-01-16 | 恒忻电子(苏州)有限公司 | Novel integrated inductance |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200917288A (en) * | 2007-10-15 | 2009-04-16 | Sekishin Kogyo Co Ltd | Metallic magnetic material for magnetic element of a choke coil and SMD choke coil |
-
2010
- 2010-04-26 CN CN2010101574429A patent/CN101937765B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239807A (en) * | 1998-06-18 | 1999-12-29 | 株式会社村田制作所 | Method of manufacturing bead inductor and the beand inductor produced thereby |
| CN1304145A (en) * | 2000-01-12 | 2001-07-18 | Tdk株式会社 | Manufacturing method for coil embedded compressed-core and coil embedded compressed-core |
| CN1321991A (en) * | 2000-04-28 | 2001-11-14 | 松下电器产业株式会社 | Composite magnetic body, magnetic element and mfg. method thereof |
| CN1372272A (en) * | 2001-02-21 | 2002-10-02 | Tdk株式会社 | Coil closed moulded powder core and method for making same |
| CN101004965A (en) * | 2006-01-16 | 2007-07-25 | 台达电子工业股份有限公司 | Internal embedded type inductive structure and its producing method |
| CN1862720A (en) * | 2006-05-19 | 2006-11-15 | 北京七星飞行电子有限公司 | Coil embedded metal magnetic powder core chip inductor |
| CN201007943Y (en) * | 2007-01-23 | 2008-01-16 | 恒忻电子(苏州)有限公司 | Novel integrated inductance |
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| CN101937765A (en) | 2011-01-05 |
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