CN200991945Y - Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die - Google Patents
Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die Download PDFInfo
- Publication number
- CN200991945Y CN200991945Y CN 200720004327 CN200720004327U CN200991945Y CN 200991945 Y CN200991945 Y CN 200991945Y CN 200720004327 CN200720004327 CN 200720004327 CN 200720004327 U CN200720004327 U CN 200720004327U CN 200991945 Y CN200991945 Y CN 200991945Y
- Authority
- CN
- China
- Prior art keywords
- die
- magnetic field
- die cavity
- cavity cover
- mould
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The utility model discloses a magnetic tile wet pressure magnetic field molding concave mould for the permanent magnetic ferrite, comprising a molding cavity sleeve that has an arc convex platform on the two end surfaces, and a mould base body, wherein, the molding cavity sleeve is fixedly connected with the mould base body. The two surfaces of the arc convex platform of the molding cavity sleeve are respectively provided with three material inlets; the arc tail parts on both ends of the arc convex platform are respectively provided with a downward slope. The utility model can solve the technical problems of sintering cracking easily caused by the existing mould in press forming of the magnetic tile whose concave mould radian Theta of is more than 90 degrees, low forming qualified rate and high production cost.
Description
Technical field
The utility model relates to a kind of mould, especially a kind of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould.
Background technology
At present, permanent ferrite magnetic tile wet pressing pressing under magnetic field mould is made up of patrix (water sucting plate), die, lower punch, the structure of die is the arcwall face single face single hole material feeding at die cavity, arc and camber line and flat sided straight connect no transition oblique line in succession, yet draw taper mostly is 0.5 °～1 °. adopt this kind structure easily when the magnetic shoe of moulding radian θ＞90 °, easily cause following defective: 1, the inhomogeneous soft limit of green compact, the soft angle of causing of material feeding, the moulding qualification rate is low, and it is bad to produce cracking behind sintering; 2, the arc both sides than arc top bit magnetic field a little less than, slip is gathered to position, arc top also causes soft limit, soft angle, the moulding qualification rate is low, and it is bad to produce cracking behind sintering; 3, because draw taper Xiao Yi produces bad phenomenon such as the edge of a knife splits.
Summary of the invention
The utility model is will solve existing mould when the magnetic shoe of compression moulding die radian θ＞90 °; be easy to generate the bad defective of sintering cracking; the moulding qualification rate is low, production cost high-technology problem, and a kind of permanent ferrite magnetic tile wet pressing pressing under magnetic field die is provided.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of permanent ferrite magnetic tile wet pressing pressing under magnetic field die comprises that both ends of the surface are provided with the die cavity cover of arc boss, die matrix, and the die cavity cover is fixedlyed connected with die matrix.Respectively have three material holes on the two sides of the arc boss of die cavity cover; The two ends arc afterbody of arc boss respectively is provided with one to lower inclined plane.
Material hole is 1.3～2.0 times of moulding green compact thickness to the vertical range at die cavity cover top.The sectional area of material hole is less than 70% of the sectional area of material hole.The die cavity cover radian θ of die＞90 °.The angle [alpha] on inclined-plane is 45 °～70 °, and the length on inclined-plane is 4～12mm.The draw taper β of die cavity cover is 1 °～3 °, and β 1 is 0.5 °～1.5 °.
The utility model is compared with existing mould, the die of existing mold is changed in the two-sided mode of respectively opening three material holes in arc top and both sides in the mode of a material hole of arc top opening one side. strengthened the material feeding pressure of arc bottom behind two material holes especially below arc boss, opening, improved the uniformity of slip injection die cavity like this, made the even soft angle, soft limit of reducing of green density of moulding bad.
The utility model is in the structure on the downward extension inclined-plane that the arc boss afterbody is provided with, the lower punch that cooperates patrix (water sucting plate) that strong permeability magnetic material makes and strong and weak permeability magnetic material to be composited, improved the radial oriented degree that slip is shaped to particle in the green compact process simultaneously. played the effect that improves the magnetic shoe magnetic property, and the density uniformity in the raising slip extrusion modling process, make the green density of moulding even, further solved the bad of product cracking behind the bad and sintering in soft angle, soft limit; Improve the radial oriented degree that slip is shaped to particle in the green compact process simultaneously, played the effect that improves the magnetic shoe magnetic property.
The utility model strengthens the draw taper of the die of existing mold and forming surface is polished to shiny surface and can reduce ejection resistance, solves the edge of a knife that existing mold often occurs and splits bad phenomenon.
Description of drawings
Fig. 1 is a structural front view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the left cutaway view of Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figures 1 to 3, the die of permanent-magnet ferrite wet pressing pressing under magnetic field mould is composited by die cavity cover 2 and matrix 3, and both are weak permeability magnetic material, and die cavity cover 2 is the high abrasion high hardness material; Below two arc convex 9 of die cavity cover 2, respectively open three material holes 4,5,6,, material hole equals 1.3～2.0 times of moulding green compact 8 thickness to the vertical range at die cavity top; The begin to speak both sides of lonely shape face of material hole 5,6; The sectional area of material hole 5,6 is less than 70% of the sectional area of material hole 4; Its arcuate configuration is characterized as and is provided with an inclined-plane 7 at arc convex 9 afterbodys and is connected with the plane, and the angle [alpha] on inclined-plane 7 is 45 °～70 °; The length on inclined-plane is 4～12mm; The draw taper β of die cavity is 1 °～3 °, and β 1 is 0.5 °～1.5 °.
In use; die is installed on the mould bases; and patrix; lower punch; accessories such as distributor plate are formed one pair of complete mould together; then ultra-fine ferrite slurry is injected mould; make formed product by extruding. in material feeding and extrusion process, magnetize; slip is by material hole 4; 5; 6 inject die cavity uniformly; oblique line structure by die arc afterbody cooperates patrix and lower punch to make the die cavity Distribution of Magnetic Field more evenly rationally, makes the blank density uniformity of compression moulding thus, when the demoulding because the structure of die cavity draw taper β and β 1; the ejection resistance of base substrate and die cavity reduces when making the demoulding; reduced the internal flaw of base substrate. in material feeding and extrusion process since magnetic field arranged exist the particulate in the raw material regularly arranged, treat oppositely to magnetize after its complete moulding; the magnetic of base substrate is disappeared, in order to using.
For the quality that improves product and the service life of mould, as preferably, die matrix and die cavity cover constitute by weak permeability magnetic material, and the die cavity cover is made of the Hardmetal materials of high-hardness, wearable; (sometimes when the die of the mould of opening the small lot order, for the matrix of saving the cost die and die cavity cover are the weak permeability magnetic material of one (such as the stainless steel of weak magnetic conduction, 50Mn steel, formations such as 70Mn steel and other nonmagnetic steels).The forming surface of die cavity cover 2 will be polished, and its surface roughness parameter Ra is 0.2～0.6 μ m.
Claims (6)
1. permanent ferrite magnetic tile wet pressing pressing under magnetic field die, comprise that both ends of the surface are provided with the die cavity cover (2) of arc boss (9), die matrix (3), die cavity cover (2) is fixedlyed connected with die matrix (3), it is characterized in that, respectively have three material holes (4,5,6) on the two sides of the arc boss (9) of described die cavity cover (2); The two ends arc afterbody of described arc boss (9) respectively is provided with one to lower inclined plane (7).
2. according to the described permanent ferrite magnetic tile wet pressing of claim 1 pressing under magnetic field die, it is characterized in that described material hole (4) is 1.3～2.0 times of moulding green compact (8) thickness to the vertical range at die cavity cover (2) top.
3. according to the described permanent ferrite magnetic tile wet pressing of claim 1 pressing under magnetic field die, it is characterized in that the sectional area of described material hole (5,6) is less than 70% of the sectional area of material hole (4).
4. according to the described permanent ferrite magnetic tile wet pressing of claim 1 pressing under magnetic field die, it is characterized in that radian θ＞90 of described die cavity cover (2) °.
5. according to the described permanent ferrite magnetic tile wet pressing of claim 1 pressing under magnetic field die, it is characterized in that the angle [alpha] of described inclined-plane (7) is 45 °～70 °, the length of inclined-plane (7) is 4～12mm.
6. according to the described permanent ferrite magnetic tile wet pressing of claim 1 pressing under magnetic field die, it is characterized in that the draw taper β of described die cavity cover (2) is 1 °～3 °, β 1 is 0.5 °～1.5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720004327 CN200991945Y (en) | 2006-03-28 | 2007-02-01 | Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200620040564.9 | 2006-03-28 | ||
| CN200620040564 | 2006-03-28 | ||
| CN 200720004327 CN200991945Y (en) | 2006-03-28 | 2007-02-01 | Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200991945Y true CN200991945Y (en) | 2007-12-19 |
Family
ID=38945021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720004327 Expired - Lifetime CN200991945Y (en) | 2006-03-28 | 2007-02-01 | Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200991945Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628445B (en) * | 2009-07-10 | 2011-03-16 | 沈阳矿山机械有限公司矿山机械分公司 | Wet-pressing molding centralized drainage vacuum system |
| CN103707006A (en) * | 2013-11-26 | 2014-04-09 | 安徽金寨将军磁业有限公司 | Method for machining single-hole filling ports of automatic filling molds for magnetic shoes made of permanent-magnetic ferrites |
| CN104551578A (en) * | 2014-12-25 | 2015-04-29 | 安徽金寨将军磁业有限公司 | Machining method for alloy embedding of hard alloy die for permanent magnetic ferrite tile |
| CN106041062A (en) * | 2016-06-03 | 2016-10-26 | 北京科技大学 | Preparation method capable of preventing deformation of neodymium-iron-boron sintered magnets |
| CN107579628A (en) * | 2017-08-30 | 2018-01-12 | 浙江凯文磁钢有限公司 | A kind of method for manufacturing radial radiation orientation rare-earth permanent magnet ferrite arch magnet |
-
2007
- 2007-02-01 CN CN 200720004327 patent/CN200991945Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628445B (en) * | 2009-07-10 | 2011-03-16 | 沈阳矿山机械有限公司矿山机械分公司 | Wet-pressing molding centralized drainage vacuum system |
| CN103707006A (en) * | 2013-11-26 | 2014-04-09 | 安徽金寨将军磁业有限公司 | Method for machining single-hole filling ports of automatic filling molds for magnetic shoes made of permanent-magnetic ferrites |
| CN104551578A (en) * | 2014-12-25 | 2015-04-29 | 安徽金寨将军磁业有限公司 | Machining method for alloy embedding of hard alloy die for permanent magnetic ferrite tile |
| CN104551578B (en) * | 2014-12-25 | 2018-01-02 | 安徽金寨将军磁业有限公司 | The processing method that a kind of permanent ferrite magnetic tile sintered-carbide die alloy is inlayed |
| CN106041062A (en) * | 2016-06-03 | 2016-10-26 | 北京科技大学 | Preparation method capable of preventing deformation of neodymium-iron-boron sintered magnets |
| CN106041062B (en) * | 2016-06-03 | 2018-03-30 | 北京科技大学 | A kind of preparation method for preventing sintered NdFeB magnet from deforming |
| CN107579628A (en) * | 2017-08-30 | 2018-01-12 | 浙江凯文磁钢有限公司 | A kind of method for manufacturing radial radiation orientation rare-earth permanent magnet ferrite arch magnet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200991945Y (en) | Permanent magnet ferrite magnetic shoe wet pressing magnetic field formed die | |
| CN101462299B (en) | Ceramic blank shaping mold help for resolving problem of difficult demoulding | |
| CN201768913U (en) | Forming die of a metal powder annular magnetic core product | |
| CN202071271U (en) | Assembled epoxy resin casting mould for current transformer | |
| CN101357401B (en) | Diamond thin wall drill tool-tip sintering forming die | |
| CN202088395U (en) | Ultrasonic wave injection molding mold | |
| CN200963678Y (en) | Automatic charging and forming die for permanent magnetic ferrite wet pressing magnetic shoe | |
| CN201042855Y (en) | Wet-press shaping mold for permanent ferrite product | |
| CN203888002U (en) | Die structure for improving motor magnetic tile center field | |
| CN2906390Y (en) | Dedicated permanent magnet ferrite ring molding die for microwave oven magnetron | |
| CN208067150U (en) | A kind of high and middle pressure valve valve body disposal molding mold | |
| CN208644023U (en) | A kind of casting mould assembling dowel device with magnet | |
| CN202088405U (en) | Injection mold with blow air-assisting function | |
| CN202129444U (en) | Metal powder injection moulding concavo-convex wheel die designed with latent type cast gate | |
| CN220311761U (en) | Novel processing device for textile machinery parts | |
| CN206510181U (en) | A kind of Ceramic Tiles isostatic mould-core | |
| CN207669653U (en) | A kind of bicolor product injection mould | |
| CN204914419U (en) | Three high -efficient matrix moulds | |
| CN111438801A (en) | High-pressure die | |
| CN217414361U (en) | Ferrite mold with multiple molding cavities | |
| CN216032191U (en) | Injection mold for positioning sheet | |
| CN213352833U (en) | High-pressure die | |
| CN213410314U (en) | Magnetic steel forming die | |
| CN211165102U (en) | Novel injection mold of rubber core sealing member | |
| CN2885457Y (en) | Mould for producing chopsticks finial |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071219 |
|
| CX01 | Expiry of patent term |