CN202861398U - Magnet mold structure enabling surface magnetic field in center to be stronger than surface magnetic fields on two sides - Google Patents
Magnet mold structure enabling surface magnetic field in center to be stronger than surface magnetic fields on two sides Download PDFInfo
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- CN202861398U CN202861398U CN 201220568958 CN201220568958U CN202861398U CN 202861398 U CN202861398 U CN 202861398U CN 201220568958 CN201220568958 CN 201220568958 CN 201220568958 U CN201220568958 U CN 201220568958U CN 202861398 U CN202861398 U CN 202861398U
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Abstract
The utility model discloses a magnet mold structure enabling a surface magnetic field in the center to be stronger than surface magnetic fields on the two sides, and aims to provide a magnet mold structure which weakens the magnetic fields on the two sides of the contact surface of a magnet lower mold, strengthens the surface magnetic field in the center of the magnet, and thus enables the surface magnetic field in the center to be stronger than the surface magnetic fields on the two sides. The magnet mold structure enabling the surface magnetic field in the center to be stronger than the surface magnetic fields on the two sides comprises an upper mold, a lower mold, a tubular mold and a forming coil, wherein the forming coil is placed on the periphery of the outer surface of the tubular mold in a sleeved mode, a rectangular upper stamper is horizontally inlaid into the horizontal surface of the lower end of the upper mold, the lower surface of the upper stamper is movably arranged above the upper end opening of the tubular mold, the upper surface of the lower mold is a convex surface, a lower stamper with the width same as that of the lower mold is fixedly connected to the convex surface of the upper end of the lower mold, the upper mold and the lower mold are both made of magnetic permeability material, and the upper stamper and the lower stamper are both made of magnetic non-permeability material. The magnet mold structure enabling the surface magnetic field in the center to be stronger than the surface magnetic fields on the two sides is mainly applied to the magnet mold technology.
Description
Technical field
The utility model relates to a kind of magnet mould, relates in particular to a kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field.
Background technology
When magnet uses, magnetic field intensity will have larger impact to the motor operation characteristic.The magnet surface field intensity of existing magnet mould structure production does not have obvious difference.How to increase the poor of magnet working face central magnetic field density and both sides magnetic density, the magnetic force that makes the magnet center Surface field be higher than the sine wave type of both sides Surface field distributes and seems particularly important.
China Patent Publication No. CN201975197U, open day is on September 14th, 2011, and name is called in the scheme of " shaped ferrite permanent magnet and mould thereof " and discloses a kind of magnet mould, and the inner arc central angle of magnet is that 150 degree are to 180 degree, the mould of magnet comprises die cavity, die cavity wall and counterdie.Weak point is that this magnet mould can not make the magnet center Surface field of producing be higher than the both sides Surface field.
The utility model content
The utility model is can not make the magnet center Surface field of producing be higher than the deficiency of both sides Surface field in order to solve existing magnet mould, a kind of magnetic field of the magnet counterdie contact-making surface both sides of weakening is provided, strengthens a kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field of magnet center Surface field.
To achieve these goals, the utility model is by the following technical solutions:
A kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field comprises upper die and lower die, tubular mold and formed coil, the sheathed external surface peripheral that is placed on tubular mold of described formed coil; The lower surface of described patrix is horizontal plane, and level has been bumped into rectangular-shaped top die on the horizontal plane of patrix lower end, and the lower surface of top die is actively installed on the top of tubular mold upper port; The upper surface of described counterdie is convex, and convex is fixedly connected with the dip mold that equates with the counterdie width in the counterdie upper end, and the upper surface of dip mold is horizontal plane, and the counterdie that is fixedly connected with this end of dip mold activity is up extend in the tube chamber of tubular mold; Described patrix and described counterdie all adopt permeability magnetic material to make, and described top die and described dip mold all adopt non-magnet_conductible material to make.By the magnetic structure to the magnet mould, mainly be by the patrix made from permeability magnetic material, counterdie is bumped into respectively non-magnetic material layer, the formation magnetic line of force is effectively concentrated and is dispersed, thereby make the base substrate of magnet when moulding, the magnetic particle is subject to the effect in better polymerization magnetic field and obtains appropriate magnetic force orientation, thereby realize that the magnet center Surface field is high, the both sides Surface field is low, reach more appropriate magnetic force orientation, namely effectively the weakened magnetic field of magnet dip mold contact-making surface both sides, strengthened the center surface magnetic field of magnet, make the induced magnetism line of force of magnet concentrate on the middle part of magnet, make magnet when being used in combination, can produce effectively perfect sinusoidal wave structure, greatly improved the performance of magnet specific use.
As preferably, described convex top is horizontal plane, and described convex side is outward-dipping tiltedly facing directly.The convex top is horizontal plane, and the convex top is that horizontal plane is so that the magnetic force orientation is even; Tiltedly face directly so that magnetic force progressively changes, make magnet when being used in combination, can produce effectively perfect sinusoidal wave structure, greatly improved the performance of magnet specific use.
As preferably, the dip mold thickness at horizontal plane place, described convex top is greater than 2.5mm, is greater than 4 times of dip mold thickness at horizontal plane place, convex top at the dip mold thickness of tiltedly facing the least significant end place directly.If the dip mold thickness at horizontal plane place, convex top is thinner, can exert an influence to magnet magnetic force orientation; Be greater than 4 times of dip mold thickness at horizontal plane place, convex top at the dip mold thickness of tiltedly facing the least significant end place directly, so that during the blank forming of magnet, the magnetic particle is subject to the effect in better polymerization magnetic field and obtains appropriate magnetic force orientation, thereby the center surface magnetic field of realizing magnet is high, and the both sides Surface field is low.
As preferably, the thickness of top die is greater than 30mm, and the top die width is greater than 1.2 times of dip mold width.If the thinner meeting of top die thickness exerts an influence to magnet magnetic force orientation; If if the top die width is too little with the ratio of dip mold width, also can affect magnet magnetic force orientation.
The utility model can reach following effect:
By the magnetic structure to the magnet mould, mainly be by the patrix made from permeability magnetic material, counterdie is bumped into respectively non-magnetic material layer, the formation magnetic line of force is effectively concentrated and is dispersed, thereby when making the blank forming of magnet, the magnetic particle is subject to the effect in better polymerization magnetic field and obtains appropriate magnetic force orientation, thereby the center surface magnetic field of realizing magnet is high, the both sides Surface field is low, reach more appropriate magnetic force orientation, namely effectively the weakened magnetic field of magnet dip mold contact-making surface both sides, strengthened the center surface magnetic field of magnet, make the induced magnetism line of force of magnet concentrate on the middle part of magnet, make magnet when being used in combination, can produce effectively perfect sinusoidal wave structure, greatly improved the performance of magnet specific use.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Among the figure: patrix 1, top die 2, tubular mold 3, dip mold 4, counterdie 5 formed coils 6, tube chamber 7, the magnetic line of force 8.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field of present embodiment as shown in Figure 1, comprises patrix 1, counterdie 5, tubular mold 3 and formed coil 6, the sheathed external surface peripheral that is placed on tubular mold of formed coil.The lower surface of patrix is horizontal plane, and level has been bumped into rectangular-shaped top die 2 on the horizontal plane of patrix lower end, and the lower surface of top die is actively installed on the top of tubular mold upper port.The upper surface of counterdie is convex, and convex is fixedly connected with the dip mold 4 that equates with the counterdie width in the counterdie upper end, and the upper surface of dip mold is horizontal plane, and the counterdie that is fixedly connected with this end of dip mold activity is up extend in the tube chamber 7 of tubular mold.The convex top is horizontal plane, and the convex side is outward-dipping tiltedly facing directly.The dip mold thickness at horizontal plane place, convex top is 3mm, satisfies the dip mold thickness at horizontal plane place, convex top greater than the designing requirement of 2.5mm; Be 12mm at the dip mold thickness of tiltedly facing the least significant end place directly, satisfy 4 times the designing requirement that is greater than the dip mold thickness at horizontal plane place, convex top at the dip mold thickness of tiltedly facing the least significant end place directly; The thickness of top die is 40mm, satisfies the thickness of top die greater than the designing requirement of 30mm; The top die width is 48mm, satisfies 1.2 times the designing requirement that the top die width is greater than the dip mold width.Upper die and lower die all adopt permeability magnetic material to make, and top die and dip mold all adopt non-magnet_conductible material to make.
During use, magnetic is placed in the tube chamber 7 of tubular mold 3, promote patrix 1, the top die bottom closely is pressed on the upper port of tubular mold 3, then promote counterdie 5, allow dip mold 4 up promote, the result that dip mold 4 promotes compresses the magnetic that is placed in the tube chamber 7, make the magnetic moulding, namely finished the magnet manufacturing that center surface magnetic field is higher than the both sides Surface field.When pressing magnetic body, the intraluminal magnetic line of force 8 focuses on the horizontal plane place on convex top, and the magnetic line of force at two ends is less, has realized the magnetic field of reduction magnet counterdie contact-making surface both sides, adds the magnet manufacturing in the center surface magnetic field of kicker magnet.
The magnet mould structure of present embodiment is simple, easily operation, and low cost of manufacture is easy to use, and is practical.
The above has described embodiment of the present utility model by reference to the accompanying drawings, but not limited by above-described embodiment when realizing, those of ordinary skills can make a variety of changes or revise within the scope of the appended claims.
Claims (4)
1. a magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field is characterized in that, comprises patrix (1), counterdie (5), tubular mold (3) and formed coil (6), the sheathed external surface peripheral that is placed on tubular mold of described formed coil; The lower surface of described patrix is horizontal plane, and level has been bumped into rectangular-shaped top die (2) on the horizontal plane of patrix lower end, and the lower surface of top die is actively installed on the top of tubular mold upper port; The upper surface of described counterdie is convex, convex is fixedly connected with the dip mold (4) that equates with the counterdie width in the counterdie upper end, the upper surface of dip mold is horizontal plane, and the counterdie that is fixedly connected with this end of dip mold activity is up extend in the tube chamber (7) of tubular mold; Described patrix and described counterdie all adopt permeability magnetic material to make, and described top die and described dip mold all adopt non-magnet_conductible material to make.
2. a kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field according to claim 1 is characterized in that.Described convex top is horizontal plane, and described convex side is outward-dipping tiltedly facing directly.
3. a kind of magnet mould structure that makes center surface magnetic field be higher than the both sides Surface field according to claim 2, it is characterized in that, the dip mold thickness at horizontal plane place, described convex top is greater than 2.5mm, is greater than 4 times of dip mold thickness at horizontal plane place, convex top at the dip mold thickness of tiltedly facing the least significant end place directly.
4.
According to claim 1 and 2, or 3 described a kind of magnet mould structures that make center surface magnetic field be higher than the both sides Surface field, it is characterized in that the thickness of top die is greater than 30mm, the top die width is greater than 1.2 times of dip mold width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568958 CN202861398U (en) | 2012-11-01 | 2012-11-01 | Magnet mold structure enabling surface magnetic field in center to be stronger than surface magnetic fields on two sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220568958 CN202861398U (en) | 2012-11-01 | 2012-11-01 | Magnet mold structure enabling surface magnetic field in center to be stronger than surface magnetic fields on two sides |
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| Publication Number | Publication Date |
|---|---|
| CN202861398U true CN202861398U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220568958 Expired - Fee Related CN202861398U (en) | 2012-11-01 | 2012-11-01 | Magnet mold structure enabling surface magnetic field in center to be stronger than surface magnetic fields on two sides |
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| CN (1) | CN202861398U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599261A (en) * | 2018-11-23 | 2019-04-09 | 横店集团东磁股份有限公司 | Magnet makes mold |
| CN112600318A (en) * | 2020-12-22 | 2021-04-02 | 湖南航天磁电有限责任公司 | Ferrite product capable of reducing motor tooth space torque and forming die thereof |
| CN113910422A (en) * | 2021-10-15 | 2022-01-11 | 横店集团东磁股份有限公司 | Magnetic field forming die for special-orientation circular magnet and manufacturing method thereof |
-
2012
- 2012-11-01 CN CN 201220568958 patent/CN202861398U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109599261A (en) * | 2018-11-23 | 2019-04-09 | 横店集团东磁股份有限公司 | Magnet makes mold |
| CN109599261B (en) * | 2018-11-23 | 2020-11-13 | 横店集团东磁股份有限公司 | Magnet manufacturing mold |
| CN112600318A (en) * | 2020-12-22 | 2021-04-02 | 湖南航天磁电有限责任公司 | Ferrite product capable of reducing motor tooth space torque and forming die thereof |
| CN113910422A (en) * | 2021-10-15 | 2022-01-11 | 横店集团东磁股份有限公司 | Magnetic field forming die for special-orientation circular magnet and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20201101 |
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| CF01 | Termination of patent right due to non-payment of annual fee |