CN105656262A - Die used for manufacturing magneto-plastic rotor of direct-current motor - Google Patents
Die used for manufacturing magneto-plastic rotor of direct-current motor Download PDFInfo
- Publication number
- CN105656262A CN105656262A CN201610195743.8A CN201610195743A CN105656262A CN 105656262 A CN105656262 A CN 105656262A CN 201610195743 A CN201610195743 A CN 201610195743A CN 105656262 A CN105656262 A CN 105656262A
- Authority
- CN
- China
- Prior art keywords
- earth permanent
- inner shield
- permanent magnet
- rotor
- shield ring
- 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
The invention discloses a die used for manufacturing a magneto-plastic rotor of a direct-current motor, which can produce a rotor large in waveform magnetic area, high in magnetic flux and extremely approximate to sinusoidal waveform. The die comprises a fixed die and a movable die, a magnetic field orienting device is arranged between the fixed die and the movable die and comprises an outer retainer ring and an inner retainer ring, a magnetic field orienting magnet is filled in an annular space formed by the outer retainer ring and the inner retainer ring and formed by four equal-size rare earth permanent magnets surrounding together, every two adjacent rare earth permanents are opposite in polarity and have a gap between them, the single rare earth permanent magnet is divided into equal-size same-polarity rare earth permanent magnet units in even number, a fixed shaft sleeve is arranged in the fixed die, a guide column is arranged in the fixed shaft sleeve, the movable die is provided with a movable shaft sleeve inside for communicating the upper end face with the lower end face of the movable die, and the lower end of the guide column penetrates the movable shaft sleeve downwardly. The die has the advantages that the rotor is large in waveform magnetic area, the higher the magnetic flux is, the more approximate the waveform gets to sinusoidal waveform.
Description
Technical field
The present invention relates to a kind of mould for the manufacture of plastic magnetic rotor of DC motor.
Background technology
Conventional plastic magnetic rotor of DC motor adopts the high temperature resistant rare-earth permanent magnet of strong magnetic to produce alignment magnetic field when producing usually, and wherein rare-earth permanent magnet is four pieces and is fan-shaped respectively, adjacent rare-earth permanent magnet opposite polarity, as shown in Figure 1, the waveform magnetic area that the rotor produced like this produces is little, and magnetic flux is little, crest is very sharp, after such rotor is installed, the structure of performance is that Motor torque is little, and electric current is little, efficiency is low, power consumption is big, and waveform deviation is sinusoidal wave, shows as motor noise big.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and can produce that waveform magnetic area is big, magnetic flux is big, the mould for the manufacture of plastic magnetic rotor of DC motor of infinite approach standard sine wave rotor.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of mould for the manufacture of plastic magnetic rotor of DC motor, comprise cover half and it is arranged on the dynamic model below cover half, magnetic field orientating device it is provided with between described fixed half and moving half, magnetic field orientating device comprises outer back-up ring and inner shield ring, it is filled with magnetic field orientating magnetite in the annular space formed between outer back-up ring and inner shield ring, magnetic field orientating magnetite is centered around by four equal-sized rare-earth permanent magnets and is formed together, the opposite polarity of adjacent rare-earth permanent magnet and between have gap, single rare-earth permanent magnet is divided into again the identical rare-earth permanent magnet unit of the equal-sized polarity of even number, the side of adjacent rare-earth permanent magnet unit is close together, it is provided with in cover half and determines axle sleeve, determine to be provided with in axle sleeve guide pillar, the upper end of cover half is provided with feed plate, the upper end of guide pillar is connected through determining axle sleeve with feed plate, the lower end of the lower end and cover half of determining axle sleeve stretches in inner shield ring, the moving axis cover being connected dynamic model upper surface and lower surface it is provided with in dynamic model, the lower end of guide pillar is passed down through moving axis cover, the upper surface of moving axis cover and dynamic model is stretched in inner shield ring, inner shield ring inwall, the upper surface of dynamic model, the upper surface of moving axis cover, the surface of guide pillar, a rotor cavity is formed between the lower surface of cover half and the lower surface determining axle sleeve, the feeding-passage being provided with on cover half and be connected feed plate and rotor cavity.
The thickness of described rare-earth permanent magnet is equal with inner shield ring height, the lower surface of cover half and the spacing >=2.3mm of inner shield ring upper surface, the upper surface of dynamic model and the distance >=2.3mm of inner shield ring lower surface.
The invention has the beneficial effects as follows: the waveform magnetic area that this rotor produces is big, and when rare-earth permanent magnet width allows, the rare-earth permanent magnet element number being divided into is more many, magnetic area is more big, magnetic flux is more big, waveform the closer to standard sine wave, after rotor is installed, under identical table magnetic, moment of torsion is big, and electric current is little, efficiency height, energy-saving effect is obvious, and motor noise is little.
Accompanying drawing explanation
Fig. 1 is the oscillogram that background technology rotor produces;
Fig. 2 is the structure iron of the present invention for the manufacture of the mould of 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 produces.
In figure: 1, cover half, 2, dynamic model, 3, outer back-up ring, 4, inner shield ring, 5, rare-earth permanent magnet unit, 6, determine axle sleeve, 7, guide pillar, 8, feed plate, 9, moving axis cover, 10, rotor cavity, 11, feeding-passage.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention scheme is described in detail.
As shown in Figures 2 and 3, mould for the manufacture of plastic magnetic rotor of DC motor of the present invention, comprise cover half 1 and it is arranged on the dynamic model 2 below cover half 1, it is provided with magnetic field orientating device between described cover half 1 and dynamic model 2, magnetic field orientating device comprises outer back-up ring 3 and inner shield ring 4, it is filled with magnetic field orientating magnetite in the annular space formed between outer back-up ring 3 and inner shield ring 4, magnetic field orientating magnetite is centered around by four equal-sized rare-earth permanent magnets and is formed together, the opposite polarity of adjacent rare-earth permanent magnet and between have gap, single rare-earth permanent magnet is divided into again the identical rare-earth permanent magnet unit 5 of the equal-sized polarity of even number, the side of adjacent rare-earth permanent magnet unit 5 is close together, it is provided with in cover half 1 and determines axle sleeve 6, determine to be provided with in axle sleeve 6 guide pillar 7, the upper end of cover half 1 is provided with feed plate 8, through determining, axle sleeve 6 is connected with feed plate 8 in the upper end of guide pillar 7, the lower end of the lower end and cover half 1 of determining axle sleeve 6 stretches in inner shield ring 4, the moving axis cover 9 being connected dynamic model 2 upper surface and lower surface it is provided with in dynamic model 2, the lower end of guide pillar 7 is passed down through moving axis cover 9, the upper surface of moving axis cover 9 and dynamic model 2 is stretched in inner shield ring 4, inner shield ring 4 inwall, the upper surface of dynamic model 2, the upper surface of moving axis cover 9, the surface of guide pillar 7, a rotor cavity 10 is formed between the lower surface of cover half 1 and the lower surface determining axle sleeve 6, the feeding-passage 11 being provided with on cover half 1 and be connected feed plate 8 and rotor cavity 10.
The thickness of described rare-earth permanent magnet is highly equal with inner shield ring 4, the lower surface of cover half 1 and the spacing >=2.3mm of inner shield ring 4 upper surface, the upper surface of dynamic model 2 and the distance >=2.3mm of inner shield ring 4 lower surface. The both ends of the surface of such rotor are also in the magnetic field that rare-earth permanent magnet produces completely, thus ensure the arrangement of the magnetic in rotor further rationally, obtain qualified rotor.
The working process of the present invention is: when producing, rare-earth permanent magnet can produce a closed radiation magnetic circuit, when the magnetic moulding material melted is entered after in rotor cavity 10 by feed plate 8 and feeding-passage 11, ferromagnetic oxide powder in magnetic moulding material is arranged at rotor cavity 10 again by under the effect of radiation magnetic circuit, qualified rotor is just obtained Deng after the cooling of magnetic moulding material, as shown in Figure 4, the waveform magnetic area that this rotor produces is big, when rare-earth permanent magnet width allows, the rare-earth permanent magnet element number being divided into is more many, magnetic area is more big, magnetic flux is more big, waveform is the closer to standard sine wave, after rotor is installed, under identical table magnetic, moment of torsion is big, electric current is little, efficiency height, energy-saving effect is obvious, motor noise is little.
Claims (2)
1. for the manufacture of the mould of plastic magnetic rotor of DC motor, comprise cover half and it is arranged on the dynamic model below cover half, it is characterized in that: between described fixed half and moving half, be provided with magnetic field orientating device, magnetic field orientating device comprises outer back-up ring and inner shield ring, it is filled with magnetic field orientating magnetite in the annular space formed between outer back-up ring and inner shield ring, magnetic field orientating magnetite is centered around by four equal-sized rare-earth permanent magnets and is formed together, the opposite polarity of adjacent rare-earth permanent magnet and between have gap, single rare-earth permanent magnet is divided into again the identical rare-earth permanent magnet unit of the equal-sized polarity of even number, the side of adjacent rare-earth permanent magnet unit is close together, it is provided with in cover half and determines axle sleeve, determine to be provided with in axle sleeve guide pillar, the upper end of cover half is provided with feed plate, the upper end of guide pillar is connected through determining axle sleeve with feed plate, the lower end of the lower end and cover half of determining axle sleeve stretches in inner shield ring, the moving axis cover being connected dynamic model upper surface and lower surface it is provided with in dynamic model, the lower end of guide pillar is passed down through moving axis cover, the upper surface of moving axis cover and dynamic model is stretched in inner shield ring, inner shield ring inwall, the upper surface of dynamic model, the upper surface of moving axis cover, the surface of guide pillar, a rotor cavity is formed between the lower surface of cover half and the lower surface determining axle sleeve, the feeding-passage being provided with on cover half and be connected feed plate and rotor cavity.
2. the mould for the manufacture of plastic magnetic rotor of DC motor according to claim 1, it is characterized in that: the thickness of described rare-earth permanent magnet is equal with inner shield ring height, the lower surface of cover half and the spacing >=2.3mm of inner shield ring upper surface, the upper surface of dynamic model and the distance >=2.3mm of inner shield ring lower surface.
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 true CN105656262A (en) | 2016-06-08 |
| CN105656262B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107672011A (en) * | 2017-09-19 | 2018-02-09 | 杭州普门磁性器件有限公司 | The extrusion molding apparatus and its method of a kind of radial multi-pole magnetic ring |
Citations (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 |
| CN105141078A (en) * | 2015-07-22 | 2015-12-09 | 郎溪亚博磁电科技有限公司 | Magnetic field injection molding equipment used for magnetic motor rotor |
| 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
Patent Citations (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 |
| CN105141078A (en) * | 2015-07-22 | 2015-12-09 | 郎溪亚博磁电科技有限公司 | Magnetic field injection molding equipment used for magnetic motor rotor |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107672011A (en) * | 2017-09-19 | 2018-02-09 | 杭州普门磁性器件有限公司 | The extrusion molding apparatus and its method of a kind of radial multi-pole magnetic ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105656262B (en) | 2018-08-28 |
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