CN106803459B - A kind of bipolar oriented moulding mold of anisotropic bonded magnet single side - Google Patents
A kind of bipolar oriented moulding mold of anisotropic bonded magnet single side Download PDFInfo
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- CN106803459B CN106803459B CN201611265536.1A CN201611265536A CN106803459B CN 106803459 B CN106803459 B CN 106803459B CN 201611265536 A CN201611265536 A CN 201611265536A CN 106803459 B CN106803459 B CN 106803459B
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- dynamic model
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- 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
- H01F41/0253—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 for manufacturing permanent magnets
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a kind of bipolar oriented moulding molds of anisotropic bonded magnet single side comprising cover half part, dynamic model part, hot runner structure, oriented moulding die cavity body；The magnetic field Halbach that 2 poles are formed in oriented moulding die cavity body, is orientated raw material to be formed in oriented moulding die cavity body.Scheme provided by the invention effectively can generate anisotropic bonded magnet using injection molding technique high-volume, effectively meet the needs in market.
Description
Technical field
The present invention relates to the manufacturing technologies of bonded permanent magnet, and in particular to the molding die of bonded permanent magnet.
Background technique
Bonded permanent magnet is indispensable functional device in modern industry, and magnet has magnetic property uniform, accurate size
Equal remarkable advantages, have been widely used in various precision electric motors.
The molding method of bonded permanent magnet mainly has compression forming, injection moulding, calendering formation, extrusion molding etc., but with
Upper method is in the majority to produce isotropic magnet, can not efficiently generate anisotropy magnet.And with various sensors
It promotes and applies, is stepped up using the anisotropy magnet demand that injection molding technique produces, it can be seen that a kind of energy is provided
The problem of being enough this field urgent need to resolve using the scheme of injection molding technique production anisotropy magnet.
Summary of the invention
Aiming at the problem that existing bonded permanent magnet molding scheme can not efficiently generate anisotropy magnet, need a kind of new each
Anisotropy magnet generates scheme.
It is orientated to as a result, technical problem to be solved by the invention is to provide a kind of anisotropic bonded magnet single side is bipolar
Pattern tool, realizes and produces anisotropy magnet using injection molding technique.
In order to solve the above technical problems, the bipolar oriented moulding mold packet of anisotropic bonded magnet single side provided by the invention
Include cover half part, dynamic model part, hot runner structure, oriented moulding die cavity body；2 poles are formed in the oriented moulding die cavity body
The magnetic field Halbach, raw material to be formed in oriented moulding die cavity body is orientated.
Preferably, the oriented moulding die cavity body is embedded in dynamic model part, comprising: type core, magnetic steel sleeve, the first magnet steel,
Second magnet steel, partition, the type core is embedded in dynamic model part, and is connect with magnetic steel sleeve, first magnet steel, the placement of the second magnet steel
It is separated between magnetic steel sleeve and type core, and between the two by partition.
Preferably, first magnet steel is identical as the second magnet steel size, center symmetric setting, the magnetic direction phase of two magnet steel
Instead, the magnetic field Halbach of 2 poles is formed in oriented moulding die cavity body.
Preferably, the upper end of the first magnet steel is the pole N, and the upper end of the second magnet steel is the pole S, wherein the magnetic line of force is from the first magnet steel
The pole N of upper end is set out, and is passed through shaping mould cavity, the pole S of the second magnet steel upper end is returned to, to form one in oriented moulding die cavity body
The magnetic field Halbach of a 2 pole.
Preferably, the cover half part includes panel, flow distribution plate, cover half backing plate, solid plate, cover half mode；
The cover half mode is fixed in solid plate by cover half backing plate；
The panel and flow distribution plate is connected and fixed；
The flow distribution plate, cover half backing plate, solid plate are sequentially connected fixation.
Preferably, the dynamic model part includes moving template, dynamic model backing plate, bottom plate, feet, dynamic model mode；The dynamic model
Plate, dynamic model backing plate, feet, bottom plate are sequentially connected fixation；The dynamic model mode is mounted in moving template, and is compressed by dynamic model backing plate
It is fixed.
Preferably, the hot runner structure is embedded in cover half part, mainly includes split-flow heater, hot nozzle,
Nozzle calandria；The runner passed through for the magnetic powder mixture of melting is equipped in the split-flow heater；Hot nozzle is threaded through spray
In mouth calandria, runner in top and split-flow heater perforation, bottom end and takes when cover half part and dynamic model part mold
Cooperate to shaping mould cavity.
Preferably, the split-flow heater, nozzle calandria use resistance heater.
Preferably, further include demoulding mechanism in the molding die, which is placed in dynamic model part, and with take
Cooperate to shaping mould cavity.
Preferably, the demoulding mechanism includes ejector retainner plate, ejector plate, backhaul locating rod, reset spring and sprue puller；
It is connected and fixed between ejector retainner plate and ejector plate, backhaul locating rod is fixed on ejector retainner plate, is arranged thereon by reset spring, is arranged
There is the top of the backhaul locating rod of reset spring to be threaded through in dynamic model part；One end of sprue puller is contacted with ejector plate, another
End is connect with injector, and controls its movement by an oil cylinder in injector.
Scheme provided by the invention effectively can generate anisotropic bonded magnet using injection molding technique high-volume,
Effectively meet the needs in market.
Furthermore this radial oriented molding die compact overall structure, stable and reliable for performance, it is convenient to operate, practical.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Fig. 1 is the cross-sectional view of the bipolar oriented moulding mold of anisotropic bonded magnet single side in the present invention.
Figure label:
| Appended drawing reference | Title | Appended drawing reference | Title |
| 1 | Panel | 17 | Type core |
| 2 | Flow distribution plate | 19 | First screw |
| 3 | Cover half backing plate | 20 | Second screw |
| 4 | Solid plate | 21 | Third screw |
| 5 | Moving template | 22 | 4th screw |
| 6 | Dynamic model backing plate | 23 | 5th screw |
| 7 | Feet | 24 | Push back pin |
| 8 | Ejector retainner plate | 25 | Spring |
| 9 | Ejector plate | 26 | Guide sleeve |
| 10 | Bottom plate | 27 | Guide post |
| 11 | Cover half mode | 28 | Split-flow heater |
| 12 | Magnetic steel sleeve | 29 | Hot nozzle |
| 13 | Magnet steel A | 30 | Runner |
| 14 | Magnet steel B | 31 | Product type chamber |
| 15 | Partition | 32 | Knockout rod |
| 16 | Dynamic model mode | 33 | Nozzle calandria |
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1 which shows the bipolar oriented moulding mold of anisotropic bonded magnet single side that this example provides cuts open
View.
As seen from the figure, the radial oriented molding die of this anisotropic bonded magnet, specifically includes that
Cover half part, dynamic model part, hot runner structure, oriented moulding die cavity body, demolding structure, this five parts.
Wherein, cover half part is carried out point by guidance set and dynamic model part, molds cooperation, when molding, so that hot-fluid
Road structure and oriented moulding die cavity body cooperate, and the magnetic powder mixture of melting is formed by hot runner structure, and are injected into oriented moulding
In die cavity body, the magnetic field Halbach of 2 poles is formed in shaping mold cavity body, when filling cavity forming to molten state raw material, into
Row orientation makes it have the bipolar magnetic characteristic of single side after formed product, completes the bipolar oriented moulding of single side；And ingot stripper
Structure is placed in dynamic model part, and is cooperated with oriented moulding die cavity body, for taking off shaped article from oriented moulding die cavity body
Mould.
In this example, cover half part specifically includes panel 1, flow distribution plate 2, cover half backing plate 3, solid plate 4, cover half mode 11 5
A part.
Wherein, cover half mode 11 is fixed in solid plate 4 by cover half backing plate 3.
Panel 1 and flow distribution plate 2 are connected and fixed by the first screw 19；Flow distribution plate 2, cover half backing plate 3, solid plate 4 is by the second spiral shell
Nail 20 is connected and fixed.
In this example, the main structure with guide post 27 and guide sleeve 26 of guidance set between dynamic model part and cover half part
At.Wherein guide sleeve 26 is fixed in solid plate 4, and in the corresponding moving template 5 for being placed in dynamic model part of guide post 27, and its
Upper end is movably threaded through in guide sleeve 26, from there through being slidably matched between guide post 27 and guide sleeve 26, is realized to dynamic model portion
Divide the guiding relatively moved between cover half part.
In this example, hot runner structure specifically includes split-flow heater 28, hot nozzle 29, nozzle calandria 33 this three
Point.
Wherein, split-flow heater 28 is more particularly arranged at the geometric center of panel 1 and flow distribution plate 2, passes through panel 1 and flow distribution plate
2 are fixed split-flow heater 28.The runner 30 passed through for the magnetic powder mixture of melting is equipped in the split-flow heater 28.
Hot nozzle 29 is corresponding to be threaded through in nozzle calandria 33, and is penetrated through with the runner 30 in split-flow heater 28.If
There is the nozzle calandria 33 of hot nozzle 29 is whole to cover in cover half mode 11.
Thus in the hot runner structure constituted, by split-flow heater 28 and nozzle calandria 33 come heating is flowed respectively simultaneously
The mixture of road 30 and magnetic powder and binding resin in hot nozzle 29 makes its melting, accelerates flowing.
Thus for the hot runner structure constituted when forming magnetic powder mixture, dynamic model part passes through guide post 27 and guide sleeve first
26 slidings realize that the molding with cover half part cooperates, so that in the oriented moulding die cavity body being located in dynamic model part and cover half part
Hot runner structure corresponding matching；
Then, the mixture of magnetic powder and binding resin is entered in runner 30 under the action of injector internal pressure,
The heating of split-flow heater 28 melts mixture completely, and the mixture of melting is entered in hot nozzle 29 by runner 30；Meanwhile
The starting of nozzle calandria 33 continues to heat to the mixture melted in hot nozzle 29, keeps its molten condition；
Finally, the mixture of the melting in it is injected into oriented moulding die cavity body by hot nozzle 29.
In this example, the heating device in split-flow heater 28 is resistance heater, and but it is not limited to this, according to need
Other schemes also can be used.
In this example, the heating device in nozzle calandria 33 is resistance heater, and but it is not limited to this, according to need
Other schemes also can be used.
In this example, dynamic model part is mainly by moving template 5, dynamic model backing plate 6, bottom plate 10, feet 7, the cooperation of dynamic model mode 16
It constitutes.
As seen from the figure, moving template 5, dynamic model backing plate 6, feet 7, bottom plate 10 are set gradually, and are connected admittedly by third screw 21
It is fixed；Feet 7 and bottom plate 10 are connected and fixed by the 4th screw 22 simultaneously, thus constitute the main structure of dynamic model part.
The center of the moving template 5 is provided with corresponding placing chamber to be used to dispose dynamic model mode 16, the dynamic model mode
16 for disposing oriented moulding die cavity body, and entirety is placed in moving template 5, and is fixed by dynamic model backing plate 6.Thus it constitutes
Dynamic model part.
In this example, oriented moulding die cavity body is mainly matched by magnetic steel sleeve 12, magnet steel A13, magnet steel B14, partition 15, type core 17
It closes and constitutes.
Wherein, it is welded between 17 top of magnetic steel sleeve 12 and type core, magnetic steel sleeve 12 and type core 17 are assemblied in dynamic model mode 16.
Magnetic steel sleeve 12 thus set is matched with dynamic model mode 16 is combined into product type chamber 31.
Magnet steel A13 and magnet steel B14 cooperation integral installation between magnetic steel sleeve 12 and type core 15, and therebetween with every
Piece 15 separates.
Both magnet steel A13 and magnet steel B14 are symmetrical arranged in this example, and magnetic pole is opposite.Wherein, the pole N of magnet steel A13 is in upper, S
Grade is under；And the S grade of magnet steel B14, upper, the pole N is under.
In the oriented moulding die cavity body of such setting, lower surface centrosymmetric size with there are two is identical, magnetic field side
To opposite magnet steel A and magnet steel B；The upper end magnet steel A is the pole N, and the upper end magnet steel B is the pole S, and the magnetic line of force goes out from the pole N of the upper end magnet steel A
Hair passes through molding cavity, returns to the pole S of the upper end magnet steel B, 2 poles are thus formd in oriented moulding die cavity body
The magnetic field Halbach is orientated when for molten state raw material filling cavity forming, after formed product, it is double to make it have single side
The magnetic characteristic of pole.
It for the magnetic field Halbach of 2 pole, simulates and calculates by ANSYS, which is 5500gauss, can
It is required with meeting aeolotropic magnet orientation.
For the magnet steel in this oriented moulding die cavity body, preferably high performance sintered neodymium-iron-boron magnet steel.
As an alternative, which equally can be used samarium-cobalt magnet.
Thus the oriented moulding die cavity body constituted, is integrally located in dynamic model part, closes in dynamic model part and cover half part
When mould cooperates, cooperates with the hot runner structure in cover half part, the mixture of melting is injected by hot nozzle and is orientated to pattern
In cavity；When molten state raw material fills cavity forming, 2 poles that are cooperatively formed in cavity by magnet steel A13 and magnet steel B14
Halbach magnetic field orientating, after formed product, magnetic characteristic is that single side is bipolar, and is saturation magnetization status, therefore molded product is
Use can be assembled, no longer needs to magnetize.
In this example, demolding structure is mainly by ejector retainner plate 8, ejector plate 9, backhaul locating rod 24, reset spring 25 and
The cooperation of sprue puller 32 is constituted, and entirety is placed in dynamic membrane part.
Wherein, it is connected and fixed between ejector retainner plate 8 and ejector plate 9 by the 5th screw 23, and is connect with type core 17, with band
Ejector half core 17 is mobile.
Backhaul locating rod 24 is fixed on ejector retainner plate 8, is arranged thereon by reset spring 25, and returning for reset spring 25 is arranged with
The top of journey locating rod 24 is successively threaded through in feet 7, dynamic model backing plate 6 and moving template 5.
The geometric center of bottom plate 10 is run through in one end of sprue puller 32, and contacts with ejector plate 9, and the other end and injector connect
It connects, and its movement is controlled by an oil cylinder in injector.
Thus it when the demolding structure constituted is dynamic membrane part cooperation, can complete between dynamic membrane part and cover half part
Demoulding convenient for the taking-up of finished product product, and automatically resets after product taking-up.Its specific process is as follows:
Firstly, dynamic model part realizes point between cover half part by the opposite sliding between guide post 27 and guide sleeve 26
Mould；
Then, it is moved forward by oil cylinder control sprue puller 32, under the thrust that sprue puller 32 applies, ejector plate 9,
Ejector retainner plate 8 is driven, type core 17, backhaul locating rod 21 moves forward together, and spring 22 is squeezed that deformation occurs, and product is in type core
Under the action of 17, it is ejected die cavity position, is taken out by auxiliary materials manipulator；
Then, oil cylinder control sprue puller 32 moves backward, in the work for covering 22 restoring force of spring in backhaul locating rod 21
Under, ejector retainner plate 8, type core 17,21 ejector plate 9 of backhaul locating rod, which synchronizes, is moved rearwardly into original position, realizes demoulding.
It is last it should be noted that guide post 27 in this example approach, the axial line of 26 geometric pattern core 17 of guide sleeve are uniformly distributed,
Quantity is at least 2.Guide post 27 in this example approach, the quantity of guide sleeve 26 are both preferably 4, thereby guarantee that entire mold fortune
Capable stability.
Furthermore the axial line of the 21 geometric pattern core 17 of backhaul locating rod in this example approach is uniformly distributed, and quantity is at least 2
It is a.Journey locating rod quantity in this example approach is both preferably 4, thereby guarantees that the stability of entire mold operation.
Furthermore the first screw 19 for being connected and fixed panel 1 and flow distribution plate 2 in this example approach, is connected and fixed flow distribution plate
2, cover half backing plate 3, the second screw 20 of solid plate 4 is connected and fixed moving template 5, dynamic model backing plate 6, feet 7, the third of bottom plate 10
Screw 21 is connected and fixed the 4th screw 22 of bottom plate 10 and feet 7, is connected and fixed the 5th screw of ejector retainner plate 8 and ejector plate 9
23, it is uniformly distributed around the axial line of type core 17.It is every in this example in order to guarantee the reliability and stability being connected and fixed
The quantity of kind screw is at least 2,4 is both preferably in this example, and circumferencial direction is uniformly distributed, and connection is effectively ensured
Reliability.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of bipolar oriented moulding mold of anisotropic bonded magnet single side comprising cover half part, dynamic model part, hot flow path
Structure, oriented moulding die cavity body；It is characterized in that, the magnetic field Halbach of 2 poles is formed in the oriented moulding die cavity body,
Raw material to be formed in oriented moulding die cavity body is orientated；
The oriented moulding die cavity body is embedded in dynamic model part, mainly by magnetic steel sleeve, the first magnet steel, the second magnet steel, partition, type
Core cooperation is constituted；
Wherein, it is welded between magnetic steel sleeve and type core top, magnetic steel sleeve and type core are assemblied in dynamic model mode, magnet steel thus set
Set is matched with dynamic model mode is combined into product type chamber；
First magnet steel and the second magnet steel cooperate integral installation between magnetic steel sleeve and type core, and in the first magnet steel and the second magnet steel
Between separated with partition；Both first magnet steel and the second magnet steel are symmetrical arranged, and magnetic pole is opposite, wherein the pole N of the first magnet steel exists
On, the pole S is under；And the pole S of the second magnet steel, upper, the pole N is under；
In the oriented moulding die cavity body, lower surface is matched there are two centrosymmetric size is identical, magnetic direction it is opposite the
One magnet steel and the second magnet steel；First magnet steel upper end is the pole N, and the second magnet steel upper end is the pole S, N of the magnetic line of force from the first magnet steel upper end
Pole is set out, and is passed through molding cavity, is returned to the pole S of the second magnet steel upper end, 2 poles are thus formd in oriented moulding die cavity body
The magnetic field Halbach, for molten state raw material filling cavity forming when, be orientated, after formed product, make it have single side
Bipolar magnetic characteristic.
2. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 1, which is characterized in that
The cover half part includes panel, flow distribution plate, cover half backing plate, solid plate, cover half mode；
The cover half mode is fixed in solid plate by cover half backing plate；
The panel and flow distribution plate is connected and fixed；
The flow distribution plate, cover half backing plate, solid plate are sequentially connected fixation.
3. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 1, which is characterized in that
The dynamic model part includes moving template, dynamic model backing plate, bottom plate, feet, dynamic model mode；The moving template, dynamic model backing plate, pad
Foot, bottom plate are sequentially connected fixation；The dynamic model mode is mounted in moving template, and is fixed by dynamic model backing plate.
4. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 1, which is characterized in that
The hot runner structure is embedded in cover half part, mainly includes split-flow heater, hot nozzle, nozzle calandria；It is described
Split-flow heater in be equipped with the runner that passes through of magnetic powder mixture for melting；Hot nozzle is threaded through in nozzle calandria, thermal jet
Runner perforation in the top and split-flow heater of mouth, bottom end and are orientated to pattern when cover half part and dynamic model part mold
Cavity cooperation.
5. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 4, which is characterized in that
The split-flow heater, nozzle calandria use resistance heater.
6. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 1, which is characterized in that
It further include demoulding mechanism in the molding die, which is placed in dynamic model part, and matches with oriented moulding die cavity body
It closes.
7. the bipolar oriented moulding mold of a kind of anisotropic bonded magnet single side according to claim 6, which is characterized in that
The demoulding mechanism includes ejector retainner plate, ejector plate, backhaul locating rod, reset spring and sprue puller；Ejector retainner plate and thimble pad
It is connected and fixed between plate, backhaul locating rod is fixed on ejector retainner plate, is arranged in backhaul locating rod by reset spring, and reset is arranged with
The top of the backhaul locating rod of spring is threaded through in dynamic model part；One end of sprue puller is contacted with ejector plate, the other end and note
Machine connection is penetrated, and its movement is controlled by an oil cylinder in injector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611265536.1A CN106803459B (en) | 2016-12-30 | 2016-12-30 | A kind of bipolar oriented moulding mold of anisotropic bonded magnet single side |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611265536.1A CN106803459B (en) | 2016-12-30 | 2016-12-30 | A kind of bipolar oriented moulding mold of anisotropic bonded magnet single side |
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| CN106803459A CN106803459A (en) | 2017-06-06 |
| CN106803459B true CN106803459B (en) | 2019-05-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111415795A (en) * | 2019-12-31 | 2020-07-14 | 上海三环磁性材料有限公司 | Anisotropic bonded ferrite plane bipolar orientation magnetization mold |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543416A (en) * | 2010-12-15 | 2012-07-04 | 上海爱普生磁性器件有限公司 | Integrated molding die |
| CN103903850A (en) * | 2013-12-29 | 2014-07-02 | 上海爱普生磁性器件有限公司 | Anisotropic magnet radial orienting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06210650A (en) * | 1993-01-21 | 1994-08-02 | Canon Inc | Method and apparatus for injection molding of magnet roller |
| JP2002134315A (en) * | 2000-10-27 | 2002-05-10 | Toda Kogyo Corp | Anisotropic cylindrical magnet and its molding die magnetic circuit device |
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2016
- 2016-12-30 CN CN201611265536.1A patent/CN106803459B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543416A (en) * | 2010-12-15 | 2012-07-04 | 上海爱普生磁性器件有限公司 | Integrated molding die |
| CN103903850A (en) * | 2013-12-29 | 2014-07-02 | 上海爱普生磁性器件有限公司 | Anisotropic magnet radial orienting device |
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| CN106803459A (en) | 2017-06-06 |
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