CN105656262B - Mold for manufacturing plastic magnetic rotor of DC motor - Google Patents
Mold for manufacturing plastic magnetic rotor of DC motor Download PDFInfo
- Publication number
- CN105656262B CN105656262B CN201610195743.8A CN201610195743A CN105656262B CN 105656262 B CN105656262 B CN 105656262B CN 201610195743 A CN201610195743 A CN 201610195743A CN 105656262 B CN105656262 B CN 105656262B
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- CN
- China
- Prior art keywords
- inner shield
- permanent magnet
- rare
- shield ring
- earth permanent
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
Abstract
Waveform magnetic surface product can be produced the invention discloses a kind of greatly, magnetic flux is big, the mold for manufacturing plastic magnetic rotor of DC motor of infinite approach standard sine wave rotor, including fixed half and moving half, magnetic field orientating device is provided between the fixed half and moving half, magnetic field orientating device includes outer baffle ring and inner shield ring, magnetic field orientating magnetite is filled in the annular space formed between outer baffle ring and inner shield ring, magnetic field orientating magnetite is surrounded by four equal-sized rare-earth permanent magnets and is formed together, the polarity of adjacent rare-earth permanent magnet it is opposite and between have gap, single rare-earth permanent magnet is divided into the identical rare earth permanent magnet body unit of the equal-sized polarity of even number again, dead axle set is provided in cover half, it is provided with guide post in dead axle set, the moving axis set of connection dynamic model upper surface and lower face is provided in dynamic model, the lower end of guide post is passed down through moving axis set.It is an advantage of the invention that：The waveform magnetic surface product that the rotor generates is big, and magnetic flux is bigger, and waveform is closer to standard sine wave.
Description
Technical field
The present invention relates to a kind of molds for manufacturing plastic magnetic rotor of DC motor.
Background technology
Customary DC motor plastic magnetic rotor strong magnetic high temperature resistant rare-earth permanent magnet of generally use when production takes to generate
To magnetic field, wherein rare-earth permanent magnet is four pieces and is in respectively sector, and adjacent rare-earth permanent magnet polarity is on the contrary, as shown in Figure 1, in this way
The waveform magnetic surface product that the rotor produced generates is small, and magnetic flux is small, and wave crest is very sharp, after such rotor installation, the structure of performance
Small for Motor torque, electric current is small, and efficiency is low, and energy consumption is big, and waveform deviates sine wave, and it is big to show as motor noise.
Invention content
The technical problem to be solved by the present invention is to：There is provided a kind of can produce that waveform magnetic surface product is big, magnetic flux is big, infinitely connects
The mold for manufacturing plastic magnetic rotor of DC motor of nearly standard sine wave rotor.
In order to solve the above technical problems, the technical solution adopted by the present invention is：One kind turns for manufacturing direct current generator modeling magnetic
The mold of son, including cover half and the dynamic model that is arranged below cover half are provided with magnetic field orientating device between the fixed half and moving half,
Magnetic field orientating device includes outer baffle ring and inner shield ring, is taken filled with magnetic field in the annular space formed between outer baffle ring and inner shield ring
To magnetite, magnetic field orientating magnetite is surrounded by four equal-sized rare-earth permanent magnets and is formed together, adjacent rare-earth permanent magnet
Polarity it is opposite and between there is gap, the polarity of the rare-earth permanent magnet to be disposed radially, single rare-earth permanent magnet quilt again
It is divided into the identical rare earth permanent magnet body unit of the equal-sized polarity of even number, the side of adjacent rare earth permanent magnet body unit to be tightly attached to
Together, it is provided with dead axle set in cover half, is provided with guide post in dead axle set, the upper end of cover half is provided with feedboard, the upper end of guide post
It covers across dead axle and is connected with feedboard, the lower end of dead axle set and the lower end of cover half are stretched into inner shield ring, and connection is provided in dynamic model
The lower end of the moving axis set of dynamic model upper surface and lower face, guide post is passed down through moving axis set, and moving axis set and the upper surface of dynamic model are stretched into
In inner shield ring, the upper surface that inner shield ring inner wall, the upper surface of dynamic model, moving axis cover, the surface of guide post, the lower face of cover half and dead axle
A rotor cavity is formed between the lower face of set, is provided on cover half and the feeding-passage that is connected to feedboard and rotor cavity.
The thickness of the rare-earth permanent magnet and equal, the spacing of the lower face and inner shield ring upper surface of cover half of inner shield ring height
From >=2.3mm, the upper surface of dynamic model at a distance from inner shield ring lower face >=2.3mm.
The beneficial effects of the invention are as follows：The waveform magnetic surface product that the rotor generates is big, in the feelings that rare-earth permanent magnet width allows
Under condition, the rare-earth permanent magnet element number being divided into is more, and magnetic surface product is bigger, and magnetic flux is bigger, and waveform turns closer to standard sine wave
After son installation, under identical table magnetic, torque is big, and electric current is small, efficient, and energy-saving effect is apparent, and motor noise is small.
Description of the drawings
Fig. 1 is the oscillogram that rotor generates in background technology；
Fig. 2 is the structure chart of mold of the present invention for manufacturing plastic magnetic rotor of DC motor；
Fig. 3 is the magnetic field orientating device vertical view of Fig. 2；
Fig. 4 is the oscillogram that the rotor that the present invention produces generates.
In figure：1, cover half, 2, dynamic model, 3, outer baffle ring, 4, inner shield ring, 5, rare earth permanent magnet body unit, 6, dead axle set, 7, lead
Column, 8, feedboard, 9, moving axis set, 10, rotor cavity, 11, feeding-passage.
Specific implementation mode
Below in conjunction with the accompanying drawings, detailed description of the present invention specific embodiment.
As shown in Figures 2 and 3, the mold of the present invention for manufacturing plastic magnetic rotor of DC motor, including 1 He of cover half
The dynamic model 2 being arranged below cover half 1 is provided with magnetic field orientating device, magnetic field orientating device packet between the cover half 1 and dynamic model 2
Outer baffle ring 3 and inner shield ring 4 are included, magnetic field orientating magnetite, magnetic are filled in the annular space formed between outer baffle ring 3 and inner shield ring 4
Field is orientated magnetite by four equal-sized rare-earth permanent magnets around being formed together, and the polarity of adjacent rare-earth permanent magnet is opposite
There are gap, the polarity of the rare-earth permanent magnet to be disposed radially between and, single rare-earth permanent magnet is divided into even number again
The identical rare earth permanent magnet body unit 5 of a equal-sized polarity, the side of adjacent rare earth permanent magnet body unit 5 are close together, fixed
It is provided with dead axle set 6 in mould 1, is provided with guide post 7 in dead axle set 6, the upper end of cover half 1 is provided with feedboard 8, the upper end of guide post 7
It is connected with feedboard 8 across dead axle set 6, the lower end of dead axle set 6 and the lower end of cover half 1 are stretched into inner shield ring 4, setting in dynamic model 2
There are the moving axis of connection 2 upper surface of dynamic model and lower face set 9, the lower end of guide post 7 to be passed down through moving axis set 9, moving axis set 9 and dynamic model 2
Upper surface stretch into inner shield ring 4,4 inner wall of inner shield ring, the upper surface of dynamic model 2, moving axis set 9 upper surface, the surface of guide post 7,
A rotor cavity 10 is formed between the lower face of cover half 1 and the lower face of dead axle set 6, is provided on cover half 1 and is connected to charging
The feeding-passage 11 of plate 8 and rotor cavity 10.
4 height of the thickness of the rare-earth permanent magnet and inner shield ring is equal, the lower face and 4 upper surface of inner shield ring of cover half 1 it
Between distance >=2.3mm, the upper surface of dynamic model 2 at a distance from 4 lower face of inner shield ring >=2.3mm.The both ends of the surface of rotor in this way are also complete
Full the magnetic powder arrangement to be further ensured that in rotor is reasonable in the magnetic field that rare-earth permanent magnet generates, and obtains qualified turn
Son.
The present invention the course of work be：When production, rare-earth permanent magnet will produce the radiation magnetic circuit of a closure, when
After the magnetic moulding material of thawing is entered by feedboard 8 and feeding-passage 11 in rotor cavity 10, the ferrite magnetic in magnetic moulding material
Powder will just obtain qualified rotor under the action of radiating magnetic circuit after 10 rearrangement of rotor cavity, equimagnetic moulding material cooling,
As shown in figure 4, the waveform magnetic surface product that the rotor generates is big, in the case where rare-earth permanent magnet width allows, the rare earth being divided into is forever
Magnet unit quantity is more, and magnetic surface product is bigger, and magnetic flux is bigger, and waveform is after standard sine wave, rotor installation, in identical table
Under magnetic, torque is big, and electric current is small, efficient, and energy-saving effect is apparent, and motor noise is small.
Claims (2)
1. for manufacturing the mold of plastic magnetic rotor of DC motor, including cover half and the dynamic model that is arranged below cover half, feature exist
In：Magnetic field orientating device is provided between the fixed half and moving half, magnetic field orientating device includes outer baffle ring and inner shield ring, outer baffle ring
Magnetic field orientating magnetite is filled in the annular space formed between inner shield ring, magnetic field orientating magnetite is equal-sized dilute by four
Native permanent magnet around being formed together, the polarity of adjacent rare-earth permanent magnet on the contrary and between have gap, the rare-earth permanent magnet
Polarity be disposed radially, single rare-earth permanent magnet is divided into the identical rare earth of the equal-sized polarity of even number forever again
The side of magnet unit, adjacent rare earth permanent magnet body unit is close together, and dead axle set is provided in cover half, is provided in dead axle set
The upper end of guide post, cover half is provided with feedboard, and the upper end of guide post passes through dead axle set to be connected with feedboard, the lower end and determine that dead axle covers
The lower end of mould is stretched into inner shield ring, is provided with the moving axis set of connection dynamic model upper surface and lower face in dynamic model, the lower end of guide post to
Under across moving axis set, the upper surface of moving axis set and dynamic model is stretched into inner shield ring, inner shield ring inner wall, the upper surface of dynamic model, moving axis set
Upper surface, form a rotor cavity between the surface of guide post, the lower face of cover half and the lower face of dead axle set, set on cover half
The feeding-passage for being equipped with and being connected to feedboard and rotor cavity.
2. the mold according to claim 1 for manufacturing plastic magnetic rotor of DC motor, it is characterised in that：The rare earth is forever
The thickness of magnet and inner shield ring height equal, distance >=2.3mm between the lower face and inner shield ring upper surface of cover half, dynamic model it is upper
End face at a distance from inner shield ring lower face >=2.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195743.8A CN105656262B (en) | 2016-03-31 | 2016-03-31 | Mold for manufacturing plastic magnetic rotor of DC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610195743.8A CN105656262B (en) | 2016-03-31 | 2016-03-31 | Mold for manufacturing plastic magnetic rotor of DC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105656262A CN105656262A (en) | 2016-06-08 |
| CN105656262B true CN105656262B (en) | 2018-08-28 |
Family
ID=56496604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610195743.8A Active CN105656262B (en) | 2016-03-31 | 2016-03-31 | Mold for manufacturing plastic magnetic rotor of DC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105656262B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107672011B (en) * | 2017-09-19 | 2023-06-20 | 杭州普门磁性器件有限公司 | Extrusion molding device and method for radial multipole magnetic ring |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003332128A (en) * | 2002-05-15 | 2003-11-21 | Toshiba Corp | Mold for manufacturing magnet, method for manufacturing magnet, anisotropic magnet, and permanent magnet |
| CN201594784U (en) * | 2009-12-28 | 2010-09-29 | 金坛市磁性材料有限公司 | Stator magnetic tile forming die of permanent magnet direct current motor |
| CN105141078B (en) * | 2015-07-22 | 2017-11-03 | 郎溪亚博磁电科技有限公司 | Magnetic machines rotor magnetic field injection molding apparatus |
| CN205509797U (en) * | 2016-03-31 | 2016-08-24 | 张家港倍恩特磁塑科技有限公司 | A mould for making direct current motor moulds magnet rotor |
-
2016
- 2016-03-31 CN CN201610195743.8A patent/CN105656262B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105656262A (en) | 2016-06-08 |
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