CN2798272Y - Special forming mould for orientation of special magnetic field of circular magnetic steel - Google Patents
Special forming mould for orientation of special magnetic field of circular magnetic steel Download PDFInfo
- Publication number
- CN2798272Y CN2798272Y CN 200520100496 CN200520100496U CN2798272Y CN 2798272 Y CN2798272 Y CN 2798272Y CN 200520100496 CN200520100496 CN 200520100496 CN 200520100496 U CN200520100496 U CN 200520100496U CN 2798272 Y CN2798272 Y CN 2798272Y
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Abstract
The utility model relates to a special forming mould for the orientation of a special magnetic field of circular magnetic steel. The special forming mould comprises an upper mould conducting magnetism, a lower mould conducting magnetism, a concave mould without conducting magnetism and a core bar without conducting magnetism. The core bar is sheathed in the lower mould, a mould cavity is formed by enclosing the core bar, the lower mould, the concave mould and the upper mould, and the periphery of the concave mould is provided with a magnetizing coil. A top shield magnetic block without conducting magnetism is installed between the upper end of the core bar and the upper mould, and the top shield magnetic block whose diameter is bigger than that of the core bar is concentric with the core bar. One end of the lower mould, which approaches to the mould cavity, is provided with a lower shield magnetic block without conducting magnetism, and the lower shield magnetic block whose diameter is bigger than that of the core bar is concentric with the core bar. The utility model has the characteristics of reasonable design, convenient operation and constant special magnetic field orientation, namely the magnetic field orientation which forms a certain included angle with an axial direction or a radial direction of a magnetic loop, etc.
Description
Technical field
The utility model relates to the magnet steel mould, the moulding mould special of the special magnetic field orientating of particularly a kind of annular magnetic steel.
Technical background
As everyone knows, the compression moulding of permanent magnet in the prior art generally is divided into orientation compression moulding and does not have two kinds of orientation compression mouldings, specifically adopts which kind of forming method, the performance that at first depends on material itself, having is exactly the ability that depends on the permanent magnet shaped device again.The method of present employing orientation compacting permanent magnet moulding generally is electromagnet magnetizes orientation to permanent magnetic alloy powder when, applies the pressure that can make the permanent magnetic alloy powder moulding again, like this permanent magnet performance that the permanent magnet performance that is obtained is orientated far above nothing.Be orientated the preparation of (bulk, column etc.) permanent magnet as the orientation compression moulding of special magnetic field orientating shape permanent magnet than general parallel magnetic field, it is big many that its difficulty is wanted.The for example preparation of permanent-magnetic clamp.Though also there is article once simply to introduce, the content of this article introduction only limits to method radial oriented or axial orientation compacting permanent-magnetic clamp, has the oblique angle alignment magnetic field to suppress the shaped device of permanent-magnetic clamp for preparation, and not seeing has any report.
Summary of the invention
Main purpose of the present utility model provides a kind of reasonable in design, and is easy to operate, has constant special magnetic field orientating, promptly with magnet ring axially or the moulding mould special of the special magnetic field orientating of annular magnetic steel of the magnetic field orientating that radially forms an angle.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: comprise the upper die and lower die of magnetic conduction and non-magnetic die, core bar, core bar is set in the counterdie, core bar, counterdie, die and patrix surround the die cavity of annular, the die periphery is provided with the coil that magnetizes, be provided with the non-magnetic retaining magnetic patch of going up between described core bar upper end and the patrix, the diameter that keeps off magnetic patch this on is greater than the diameter of described core bar and concentric with core bar; Counterdie is provided with the non-magnetic magnetic patch of retaining down near an end of die cavity, and the internal diameter that this time keeps off magnetic patch is greater than the diameter of described core bar and concentric with core bar.The patrix of magnetic conduction and non-magnetic die reach goes up the upper channel that the retaining magnetic patch has constituted magnetic field, the counterdie of magnetic conduction and non-magnetic retaining magnetic patch down and core bar constitute the lower passage in magnetic field, thereby define magnetize magnetic field in die cavity formation and magnet steel axially or the direction that radially forms an angle trend, the magnet steel that goes in ring is had stable special magnetic field orientating compacting.As preferably, be embedded with in the described die magnetic conduction adjusting module, this adjusting module is concentric with described core bar; The cross section of described adjusting module is annular or side's annular.Wherein, the cross section of adjusting module can also be the symmetric shape of other shapes.Adjusting module can be adjusted the trend of magnetic field in die cavity that magnetize, make the magnetic field of magnetizing according to easily from the patrix and the non-magnetic die of magnetic conduction and keep off magnetic patch and upper channel that adjusting module has constituted magnetic field passes through, improve the stability of magnetic field trend, can also adjust the angle of magnetic field, oblique angle trend.
As preferably, described die is made of interior die and outer die, and described interior die is made and is set in the outer die by hard material.Wherein, because interior die adopts hard material to make, the more smooth and anti-mould of its inwall makes the magnet steel surface after the compacting Paint Gloss, the useful life of also having improved mould; Simultaneously and since indent molded cause higher, the structure of die and outer die in adopting, outer die can adopt the relatively low material preparation of cost, can reduce the manufacturing cost of entire die.
As preferably, the described cross section of going up the retaining magnetic patch is circular or square or octangle; Described patrix and last retaining magnetic patch are made up of one or more template.
As preferably, the described magnetic patch of retaining down is upper end or the split type upper end that is distributed in counterdie that integral type is located at counterdie.
As preferably, the described magnetic patch of retaining down can all be covered in the upper surface of counterdie with difformity.
As preferably, the upper end that matches with core bar of described counterdie is provided with chamfering Φ, and this chamfering Φ is 10 °-60 °.The upper end that matches with core bar at counterdie is provided with chamfering Φ, the magnet steel demoulding after the compacting is more prone to and makes things convenient for.
As preferably, the moulding mould special of the special magnetic field orientating of described annular magnetic steel can many products of a mold forming.
As preferably, the moulding mould special of the special magnetic field orientating of described annular magnetic steel can adopt lower top type (lower punch ejects) or pull-down (die is drop-down) demolding structure.
Therefore, the utlity model has reasonable in designly, easy to operate, have constant special magnetic field orientating, promptly with magnet ring axially or the characteristics such as magnetic field orientating that radially form an angle.The patrix of magnetic conduction and non-magnetic die reach goes up the upper channel that the retaining magnetic patch has constituted magnetic field, the counterdie of magnetic conduction and non-magnetic retaining magnetic patch down and core bar constitute the lower passage in magnetic field, thereby define magnetize magnetic field in die cavity formation and magnet steel axially or the direction that radially forms an angle trend, the magnet steel that goes in ring is had stable special magnetic field orientating compacting.Wherein, the cross section of adjusting module can also be the symmetric shape of other shapes.Adjusting module can be adjusted the trend of magnetic field in die cavity that magnetize, make the magnetic field of magnetizing according to easily from the patrix and the non-magnetic die of magnetic conduction and keep off the upper channel that magnetic patch constituted magnetic field and pass through, improve the stability of magnetic field trend, can also adjust the angle angle of magnetic field trend.The upper end that matches with core bar at counterdie is provided with chamfering Φ, the magnet steel demoulding after the compacting is more prone to and makes things convenient for.
Description of drawings
Accompanying drawing 1 is a kind of cross-sectional view of the present utility model;
Accompanying drawing 2 is structural representations of the belt magnet steel of compression moulding.
Specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figure 1, core bar 4 is set in the counterdie 3, core bar 4, counterdie 3, die 2 and patrix 1 surround the die cavity 9 of annular, die 2 peripheries are provided with the coil 7 that magnetizes, be provided with on the non-magnetic circle retaining magnetic patch 5 between core bar 4 upper ends and the patrix 1, on keep off magnetic patch 5 diameter greater than the diameter of core bar 4 and concentric with core bar 4; Counterdie 3 is provided with retaining magnetic patch 6 under the non-magnetic annular near an end of die cavitys 9, and the following internal diameter that keeps off magnetic patch 6 is greater than the diameter of core bar 4 and concentric with core bar 4.Die 2 is made of interior die 21 and outer die 22, and interior die 21 is made and is set in by hard material in the outer die 22, and the annular that is embedded with magnetic conduction in the groove that interior die 21 and outer die are 22 is adjusted piece 8.The upper end that matches with core bar 4 of counterdie 3 is provided with chamfering Φ, and chamfering Φ is 25 °.Wherein, the upper die and lower die of magnetic conduction can adopt materials such as No. 45 steel or pure iron to make, non-magnetic die, core bar, annular adjust piece, on keep off magnetic patch and down the retaining magnetic patch can adopt the nonmagnetic steel of the various trades mark or stainless steel etc. to make.
During use, slurry is put into chamber 9, be pressed into annular, the coil 7 of magnetizing produces magnetize magnetic field the patrix of magnetic conduction and non-magnetic die and on the A that constituted between the lower passage that the counterdie of the upper channel in magnetic field and magnetic conduction and non-magnetic retaining magnetic patch down and core bar constitute magnetic field of retaining magnetic patch pass through to direction, magnet steel is magnetized, and the product that makes as shown in Figure 2.Adjusting module can be adjusted the trend of magnetic field in die cavity that magnetize, and the magnetic field of magnetizing is passed through according to the upper channel that has easily constituted magnetic field from the patrix of magnetic conduction and non-magnetic die and retaining magnetic patch, raising the stability moved towards of magnetic field.
Embodiment 2: as shown in Figure 1, core bar 4 is set in the counterdie 3, core bar 4, counterdie 3, die 2 and patrix 1 surround the die cavity 9 of annular, die 2 peripheries are provided with the coil 7 that magnetizes, be provided with on the non-magnetic circle retaining magnetic patch 5 between core bar 4 upper ends and the patrix 1, on keep off magnetic patch 5 diameter greater than the diameter of core bar 4 and concentric with core bar 4; Counterdie 3 is provided with retaining magnetic patch 6 under the non-magnetic annular near an end of die cavitys 9, and the following internal diameter that keeps off magnetic patch 6 is greater than the diameter of core bar 4 and concentric with core bar 4.Die 2 is made of interior die 21 and outer die 22, and interior die 21 is made and is set in by hard material in the outer die 22, and the annular that is embedded with magnetic conduction in the groove that interior die 21 and outer die are 22 is adjusted piece 8.The upper end that matches with core bar 4 of counterdie 3 is provided with chamfering Φ, and chamfering Φ is 60 °.One mould has same 6 die cavitys (promptly a mould is 6).
Embodiment 3: as shown in Figure 1, core bar 4 is set in the counterdie 3, core bar 4, counterdie 3, die 2 and patrix 1 surround the die cavity 9 of annular, die 2 peripheries are provided with the coil 7 that magnetizes, be provided with on the non-magnetic circle retaining magnetic patch 5 between core bar 4 upper ends and the patrix 1, on keep off magnetic patch 5 diameter greater than the diameter of core bar 4 and concentric with core bar 4; Counterdie 3 is provided with retaining magnetic patch 6 under the non-magnetic annular near an end of die cavitys 9, and the following internal diameter that keeps off magnetic patch 6 is greater than the diameter of core bar 4 and concentric with core bar 4.Die 2 is made of interior die 21 and outer die 22, and interior die 21 is made and is set in by hard material in the outer die 22, and the annular that is embedded with magnetic conduction in the groove that interior die 21 and outer die are 22 is adjusted piece 8.The upper end that matches with core bar 4 of counterdie 3 is provided with chamfering Φ, and chamfering Φ is 10 °.Adopt pull-down (die pulls down) demolding structure.
Embodiment 4: as shown in Figure 1, core bar 4 is set in the counterdie 3, core bar 4, counterdie 3, die 2 and patrix 1 surround the die cavity 9 of annular, die 2 peripheries are provided with the coil 7 that magnetizes, be provided with on the non-magnetic circle retaining magnetic patch 5 between core bar 4 upper ends and the patrix 1, on keep off magnetic patch 5 diameter greater than the diameter of core bar 4 and concentric with core bar 4; Counterdie 3 is provided with retaining magnetic patch 6 under the non-magnetic annular near an end of die cavitys 9, and the following internal diameter that keeps off magnetic patch 6 is greater than the diameter of core bar 4 and concentric with core bar 4.Die 2 is made of interior die 21 and outer die 22, and interior die 21 is made and is set in by hard material in the outer die 22.The upper end that matches with core bar 4 of counterdie 3 is provided with chamfering Φ, and chamfering Φ is 25 °.
Claims (10)
1, the moulding mould special of the special magnetic field orientating of a kind of annular magnetic steel, patrix (1), counterdie (3) and the non-magnetic die (2), the core bar (4) that comprise magnetic conduction, core bar (4) is set in the counterdie (3), core bar (4), counterdie (3), die (2) and patrix (1) surround the die cavity (9) of annular, die (2) periphery is provided with the coil that magnetizes (7), it is characterized in that described patrix (1) is provided with the non-magnetic retaining magnetic patch (5) of going up, the diameter that keeps off magnetic patch (5) this on is greater than the diameter of described core bar (4) and concentric with core bar (4); Counterdie (3) is provided with the non-magnetic magnetic patch (6) of retaining down near an end of die cavity (9), and the internal diameter that this time keeps off magnetic patch (6) is greater than the diameter of described core bar (4) and concentric with core bar (4).
2, the moulding mould special of the special magnetic field orientating of annular magnetic steel according to claim 1, it is characterized in that being embedded with in the described die adjusting module (8) of magnetic conduction, this adjusting module (8) is in the periphery of die cavity (9), and the endoporus of adjusting module (8) is greater than the external diameter of die cavity (9).
3, the moulding mould special of the special magnetic field orientating of annular magnetic steel according to claim 2, what it is characterized in that described adjusting module (8) is annular or side's annular.
4, according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels, it is characterized in that described die (2) is made of interior die (21) and outer die (22), described interior die (21) is made and is set in by hard material in the outer die (22).
5,, it is characterized in that the described cross section of going up retaining magnetic patch (5) is circular or square or octangle according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels.
6,, it is characterized in that described patrix (1) and last retaining magnetic patch (5) be made up of one or more template according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels.
7,, it is characterized in that described magnetic patch (6) is located at counterdie (3) for integral type upper end or the split type upper end that is distributed in counterdie (3) that keep off down according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels.
8,, it is characterized in that this mould is the one-mold multiple-member moulding according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels.
9, according to the moulding mould special of claim 1 or the special magnetic field orientating of 2 or 3 described annular magnetic steels, the upper end that matches with core bar (4) that it is characterized in that described counterdie (3) is provided with chamfering Φ, and this chamfering Φ is 10 °-60 °.
10, the moulding mould special of the special magnetic field orientating of annular magnetic steel according to claim 4, the upper end that matches with core bar (4) that it is characterized in that described counterdie (3) is provided with chamfering Φ, and this chamfering Φ is 10 °-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100496 CN2798272Y (en) | 2005-02-05 | 2005-02-05 | Special forming mould for orientation of special magnetic field of circular magnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100496 CN2798272Y (en) | 2005-02-05 | 2005-02-05 | Special forming mould for orientation of special magnetic field of circular magnetic steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798272Y true CN2798272Y (en) | 2006-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520100496 Expired - Fee Related CN2798272Y (en) | 2005-02-05 | 2005-02-05 | Special forming mould for orientation of special magnetic field of circular magnetic steel |
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|---|---|
| CN (1) | CN2798272Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013771A (en) * | 2010-11-02 | 2011-04-13 | 张家港倍恩特磁塑科技有限公司 | Orientation magnetic field in plastic magnetic rotor mould |
| CN101335128B (en) * | 2007-06-28 | 2011-05-25 | 武汉景宏工贸有限公司 | Method for producing magnetic steel molding product by full-automatic wet process and molding machinery thereof |
| CN109369169A (en) * | 2018-12-10 | 2019-02-22 | 湖南航天磁电有限责任公司 | A method of reducing dry-pressing formed strontium ferrite outer radial multi-pole magnet-ring cracking |
| CN110247483A (en) * | 2019-06-25 | 2019-09-17 | 京马电机有限公司 | A kind of magnetic structure of permanent magnet |
-
2005
- 2005-02-05 CN CN 200520100496 patent/CN2798272Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335128B (en) * | 2007-06-28 | 2011-05-25 | 武汉景宏工贸有限公司 | Method for producing magnetic steel molding product by full-automatic wet process and molding machinery thereof |
| CN102013771A (en) * | 2010-11-02 | 2011-04-13 | 张家港倍恩特磁塑科技有限公司 | Orientation magnetic field in plastic magnetic rotor mould |
| CN102013771B (en) * | 2010-11-02 | 2012-06-06 | 张家港倍恩特磁塑科技有限公司 | Orientation magnetic field in plastic magnetic rotor mould |
| CN109369169A (en) * | 2018-12-10 | 2019-02-22 | 湖南航天磁电有限责任公司 | A method of reducing dry-pressing formed strontium ferrite outer radial multi-pole magnet-ring cracking |
| CN110247483A (en) * | 2019-06-25 | 2019-09-17 | 京马电机有限公司 | A kind of magnetic structure of permanent magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 Termination date: 20140205 |