CN201247669Y - Device special used for batch pre-magnetization of small volume permanent magnet - Google Patents
Device special used for batch pre-magnetization of small volume permanent magnet Download PDFInfo
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- CN201247669Y CN201247669Y CNU2008201094970U CN200820109497U CN201247669Y CN 201247669 Y CN201247669 Y CN 201247669Y CN U2008201094970 U CNU2008201094970 U CN U2008201094970U CN 200820109497 U CN200820109497 U CN 200820109497U CN 201247669 Y CN201247669 Y CN 201247669Y
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Abstract
The utility model provides a device specially used for pre-magnetizing a batch of permanent magnets with small size, which comprises two groups of electric magnets used for generating a magnetized field with longer magnetizing time, a group of DC (Direct Current) power supply and a non-conductive magnet fixture box for containing the magnets, wherein the DC power supply is used for supplying a DC needed by the electric magnets and can adjust an output current. The utility model provides the device capable of finishing the pre-magnetizing process of a batch of products with high efficiency and low cost in the production process of small nd-fe-b magnets.
Description
Technical field
The utility model relates to a kind of small size permanent magnet device of pre-magnetizing in batches that is specifically designed to.
Background technology
Since last century, the eighties was come out, neodymium iron boron magnetic body had become the permanent magnetic material that magnetic is the strongest, cost performance is best, and according to the scope of application and corresponding magnetic Circuit Design, neodymium iron boron magnetic body can be processed into the magnet of different shape, specification.At present, the general magnetization method of neodymium iron boron product is that magnet is as one man arranged according to the direction of orientation and the field direction that magnetizes, and applies the strong electric current that magnetizes, and magnetizes so that magnet is saturated, the method is applicable to that product specification is bigger, the magnet that direction of orientation is easy to arrange.
Along with neodymium iron boron magnetic body uses the continuous expansion in field, as in field of electronic devices, require the specification of magnet less, shape is more special, therefore, has caused very big difficulty aspect orientations.If do not arrange, when magnetizing, magnet will collide mutually, causes and collides with.Therefore, need to make magnetic a little less than the magnet band before saturated magnetizing, be easy to carry out orientations, this process is called pre-magnetizing.
At present mainly use magnet charger to carry out pre-magnetizing, because magnet charger itself is that the capacitor-discharge discharge mode magnetizes, this mode of magnetizing time of magnetizing is short, thereby product can rotate to produce and collides with moment; Simultaneously, electric capacity is understood reduction of service life through repeatedly discharging and recharging, and has improved production cost.
Chinese patent application 200710098404.9 discloses a kind of magnetization method that is used for batch small sintered Nd-Fe-B magnet, and it comprises " pre-magnetizing " and " saturated magnetizing " two steps; In the pre-magnetizing step, put into the zone of magnetizing of magnet charger after smallclothes magnet to be magnetized on a small quantity " wrapped up with soft cloth " and carry out pre-magnetizing; Then, again will be through magnet saturated magnetizing in this magnet charger of pre-magnetizing.
So just have at least two problems: at first, this invention pre-magnetizing and saturated magnetizing are finished on same magnet charger, and shortened the useful life of magnet charger, have improved production cost; Secondly, each pre-magnetizing can only be handled a spot of magnet, and therefore, production efficiency also has been subjected to restriction.
The utility model content
The purpose of this utility model is to provide a kind of small size permanent magnet device of pre-magnetizing in batches that is specifically designed to, it is in batch small neodymium iron boron magnetic body production process, but high efficiency, low cost are finished the pre-magnetizing process of product, to be applicable to the pre-magnetizing process of small dimension product.
For this reason, the utility model provides a kind of in batches device of small size permanent magnet pre-magnetizing that is specifically designed to, it is characterized in that, by magnetic field take place the source and not magnetic conduction frock box two parts form, this not magnetic conduction frock box be used to hold the smallclothes neodymium iron boron magnetic body for the treatment of pre-magnetizing.
Preferably, generation source in magnetic field is made of the DC power supply of two groups of electromagnet and one group of scalable output current size.
Preferably, also comprise the electromagnet yoke iron core that the source takes place as magnetic field, it is made of soft iron.
Preferably, also comprise two groups of electromagnet that the source takes place as magnetic field, its diameter range is at 50-5000mm.
Preferably, the gap width between electromagnet yoke iron core is 20-200mm.
Preferably, the width of not magnetic conduction frock box that is used to hold magnet is suitable mutually with two groups of pole core spacings, and length and height dimension are less than or equal to the diameter of iron core.
Preferably, electromagnet yoke iron core is placed in opposite directions, and two groups of coils are that rightabout twines.
According to the utility model, adopt electromagnet to magnetize owing to be specifically designed to the device of small size permanent magnet batch pre-magnetizing as generation source, magnetic field, prolonged the useful life of equipment greatly, and the time of magnetizing can be controlled, simultaneously, can disposablely hold smallclothes magnet to be magnetized, therefore, production efficiency is improved significantly more.
According to the utility model, the device that is specifically designed to small size permanent magnet batch pre-magnetizing is after switching on to magnet, rise slow on the magnetic field, the magnetic field of magnetizing is long in the time that peak value keeps, the electric current that magnetizes can be regulated with the size of pre-magnetizing magnet, magnet is slow the rotation in the pre-magnetizing process, is difficult for colliding with.Electromagnet yoke iron core is made of soft iron, does not have the eddy-current heating effect, and therefore, the useful life of electromagnet is much larger than the useful life of capacitor-discharge formula magnet charger, and rate of energy is effectively improved.
To brief description of drawings
The utility model is described with reference to the accompanying drawings in more detail, in the accompanying drawing:
Fig. 1 is according to a kind of small size permanent magnet structural representation of the device of pre-magnetizing in batches that is used for of the present utility model.
Embodiment
As shown in Figure 1, comprise according to the pre-magnetizing device 10 that is used for producing in batches the small size neodymium iron boron magnetic body of the present utility model: the electromagnet 1,2 of two groups of about 50-500mm of diameter, electromagnet yoke iron core 3 are to place in opposite directions, and the width in gap 4 is 20-200mm; The DC power supply of one group of scalable output current size; And the not magnetic conduction container 5 that is used to hold magnet that adapts of dimensions and the width in above-mentioned magnet 1,2 and corresponding gap 4.
In an embodiment of the present utility model, adopt soft iron as yoke iron core 3, two groups of coils 1,2 twine for rightabout, iron core diameter is Φ 250mm, the iron core spacing is adjusted into 100mm, magnetic conduction frock box width and two groups of pole core spacings 4 do not adapt, and length and height dimension are no more than the diameter of iron core 3, place magnetic field fully to guarantee the pre-magnetizing product in the box 5.
It is the no magnetic permanent magnet of 5 * 5 * 4mm that the pre-magnetizing product adopts specification, put into not magnetic conduction frock box 5 with about 2000 of polybag splendid attire, magnetic conduction frock box 5 does not push the electromagnet gap, the adjusting electric current that magnetizes, carry out pre-magnetizing, the pre-magnetizing time is 3-6 second, can directly carry out the pre-magnetizing of surplus products after the taking-up, but about 10000 of this specification product per minute pre-magnetizing, operating efficiency is higher.
Through above pre-magnetizing step, product is owing to be with weak magnetic, and stretching can realize the arrangement according to easy magnetizing direction, is convenient to saturated magnetizing.
Claims (7)
1. one kind is specifically designed to the in batches device of pre-magnetizing of small size permanent magnet, it is characterized in that, by magnetic field take place the source and not magnetic conduction frock box two parts form, this not magnetic conduction frock box hold the smallclothes neodymium iron boron magnetic body for the treatment of pre-magnetizing.
2. device as claimed in claim 1 is characterized in that, generation source, magnetic field is made of the DC power supply of two groups of electromagnet and one group of scalable output current size.
3. device as claimed in claim 1 or 2 is characterized in that, also comprises the electromagnet yoke iron core that the source takes place as magnetic field, and it is made of soft iron.
4. device as claimed in claim 1 or 2 is characterized in that, the diameter range of two groups of electromagnet that the source takes place as magnetic field is at 50-500mm.
5. device as claimed in claim 1 or 2 is characterized in that, the gap width between electromagnet yoke iron core is 20-200mm.
6. device as claimed in claim 1 or 2 is characterized in that, the width of not magnetic conduction frock box that is used to hold magnet is suitable mutually with two groups of pole core spacings, and length and height dimension are less than or equal to the diameter of iron core.
7. device as claimed in claim 1 or 2 is characterized in that, electromagnet yoke iron core is placed in opposite directions, and two groups of coils are that rightabout twines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201094970U CN201247669Y (en) | 2008-07-29 | 2008-07-29 | Device special used for batch pre-magnetization of small volume permanent magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201094970U CN201247669Y (en) | 2008-07-29 | 2008-07-29 | Device special used for batch pre-magnetization of small volume permanent magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247669Y true CN201247669Y (en) | 2009-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201094970U Expired - Lifetime CN201247669Y (en) | 2008-07-29 | 2008-07-29 | Device special used for batch pre-magnetization of small volume permanent magnet |
Country Status (1)
| Country | Link |
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| CN (1) | CN201247669Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760549A (en) * | 2012-07-20 | 2012-10-31 | 浙江升华强磁材料有限公司 | Magnetizing packaging method for small neodymium-iron-boron circular piece material |
| CN104637647A (en) * | 2013-11-14 | 2015-05-20 | 三环瓦克华（北京）磁性器件有限公司 | Minitype neodymium iron boron permanent magnet batch magnetizing method and device |
| CN106783015A (en) * | 2017-02-16 | 2017-05-31 | 始兴县标准微型马达有限公司 | A kind of demagnetizing method of motor rotor |
-
2008
- 2008-07-29 CN CNU2008201094970U patent/CN201247669Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760549A (en) * | 2012-07-20 | 2012-10-31 | 浙江升华强磁材料有限公司 | Magnetizing packaging method for small neodymium-iron-boron circular piece material |
| CN104637647A (en) * | 2013-11-14 | 2015-05-20 | 三环瓦克华（北京）磁性器件有限公司 | Minitype neodymium iron boron permanent magnet batch magnetizing method and device |
| CN104637647B (en) * | 2013-11-14 | 2018-11-23 | 三环瓦克华（北京）磁性器件有限公司 | Miniature Nd-Fe-B permanent magnet batch magnetization method and device |
| CN106783015A (en) * | 2017-02-16 | 2017-05-31 | 始兴县标准微型马达有限公司 | A kind of demagnetizing method of motor rotor |
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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 |
Granted publication date: 20090527 |
|
| CX01 | Expiry of patent term |