CN201566023U - Permanent magnetic ferrite magnetic shoe mould - Google Patents
Permanent magnetic ferrite magnetic shoe mould Download PDFInfo
- Publication number
- CN201566023U CN201566023U CN2009201811658U CN200920181165U CN201566023U CN 201566023 U CN201566023 U CN 201566023U CN 2009201811658 U CN2009201811658 U CN 2009201811658U CN 200920181165 U CN200920181165 U CN 200920181165U CN 201566023 U CN201566023 U CN 201566023U
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Abstract
The utility model discloses a permanent magnetic ferrite magnetic shoe mould, which comprises a male mould, a female mould which is sleeved outside the male mould and a water absorption plate which is arranged at the upper side of the female mould, wherein a lower transitional arc surface is arranged between platform surfaces at two sides on the upper end of the female mould and an arc surface of the female mould; an upper transitional arc surface is arranged between the lower end surfaces at two sides of the water absorption plate and the arc surface of the water absorption plate; and the arc surface of the female mould and the lower transitional arc surface are respectively matched with the arc surface of the water absorption plate and the upper transitional arc surface. The permanent magnetic ferrite magnetic shoe mould has simple structure, ensures that the maximum density at two arc side parts of the green body and the male mould platform is homogenously transitioned to the minimum density of the arc surface, and improves the quality of the green body.
Description
Technical field:
The utility model relates generally to the permanent ferrite magnetic tile mould, relates in particular to magnetic shoe radian center subtended angle greater than the die in the permanent magnet body magnetic shoe mould more than 130 ° and the structural improvement of water sucting plate.
Background technology:
The Main Ingredients and Appearance of permanent ferrite magnetic tile is an iron oxide, requires difference to select iron oxide red, iron scale, Fe respectively for use according to properties of product
3O
4Smart spacious powder is as raw material.The iron oxide that will be mixed with certain water and ￠ 6mm steel ball with the wet lapping machine is ground to 0.75-1.2um, make its water content be controlled at 37% slip through the precipitator tower post precipitation, go into concave die cavity by the material feeding infusion then, under hydraulic press and magnetic field effect, when hydraulic press pressure reaches 300kg/cm-400kgf/cm, form green compact, through the ripe base of high temperature sintering, grind into the magnetic shoe product at last again.
Permanent ferrite magnetic tile product quality quality, mainly contain green compact quality quality decision, green compact quality quality mainly contains the crackle that green density difference is caused, because magnetic shoe product camber, mould also will be made into arc, initial position is different with final formation green compact position each point compression ratio when shaped by fluid pressure, and non-equidistant moulding is the main cause that causes green density difference.
It is excessive that the arc both sides end section of the die of present known magnetic shoe mould, water sucting plate and corresponding platform face are intersection point, from magnetic shoe green compact arc two sides part to arc top vertical direction compression ratio change procedure; Green compact arc two sides part compression ratio maximum, carry out the transition to circular arc place compression ratio minimum to the punch platform, it is big to arrive arc top compression ratio again, so magnetic shoe green compact arc two sides part to arc top vertical direction variable density process corresponding for green compact arc two sides partial density maximum gradually density be reduced to the punch platform and carry out the transition to the circular arc place, increase gradually to arc top density again.The difference that produces of magnetic shoe green compact maximal density and minimum density like this, density variation is excessive, and green compact arc two sides will crack (being commonly called as the edge of a knife splits) when green compact discharged stress greater than the adhesion of green compact inside when the demoulding.
The utility model content:
The utility model purpose is exactly in order to remedy the defective of prior art, a kind of permanent ferrite magnetic tile mould is provided, and it satisfies makes the permanent ferrite magnetic tile mould make green compact arc two sides part maximal density and punch platform carry out the transition to circular arc place green compact minimum density in moulding to reach unanimity.
The utility model is achieved through the following technical solutions:
The permanent ferrite magnetic tile mould includes punch, is enclosed within outer die of punch and the water sucting plate that is positioned at the die upside, it is characterized in that: transition circle cambered surface under between the flat surface of both sides, described die upper end and the arc surface of die being; Be last transition circle cambered surface between the lower surface of described water sucting plate both sides and the arc surface of water sucting plate; The arc surface of described die, down the transition circle cambered surface respectively with the arc surface of water sucting plate, the mutual corresponding matching of transition circle cambered surface down.
The utility model is according to transition circle cambered surface under die arc surface two side portions and the tangent formation of die flat surface, transition circle cambered surface in water sucting plate arc surface two side portions and the tangent formation of water sucting plate flat surface.The difference size decision of the minimum compression ratio that the radian size of described upper and lower transition circle cambered surface carries out the transition to its arc surface place according to the maximum compression ratio and the punch flat surface of green compact arc two sides, by making green compact arc two sides maximum compression ratio and punch flat surface carry out the transition to the decision that reaches unanimity of its arc surface place minimum compression ratio after the adjustment of upper and lower transition circle cambered surface, reach unanimity thereby make green compact arc two sides part maximal density and punch platform carry out the transition to circular arc place minimum density, thereby reach the purpose of green density unanimity.
Under the effect in magnetic field, during the moulding compacting, die arc surface, die flat surface, down transition circle cambered surface and water sucting plate arc surface, water sucting plate flat surface, go up and put compression back 1mm filter cloth between the transition circle cambered surface, the moisture content of the slip in the concave die cavity is discharged by the suction hole of water sucting plate then by filter cloth, initial position is to the final green compact position that forms during compacting, behind the qualified green compact of formation to be extruded, green compact are taken out in oppositely magnetize (demagnetization) last hydraulic press pressure release, the demoulding.
The utility model has the advantages that:
The utility model is simple in structure, helps green compact arc two sides part maximal density and punch platform and carries out the transition to the even of arc surface place minimum density, improves the green compact quality.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
The permanent ferrite magnetic tile mould includes punch 9, is enclosed within die 8 outside the punch 9 and the water sucting plate 7 that is positioned at die 8 upsides, is following transition circle cambered surface 1 between the flat surface 11 of both sides, die 8 upper end and the arc surface 2 of die 9; Between the lower surface 5 of described water sucting plate 7 both sides and the arc surface 4 of water sucting plate 7 is last transition circle cambered surface 3; The arc surface 2 of described die 8, down transition circle cambered surface 1 is respectively with the arc surface 2 of water sucting plate 7, transition circle cambered surface 1 is mutually to cooperating down.
Because the transition arc of both sides, green compact 3 arc two sides compression ratios are reduced, thereby the density of green compact 6 arc two sides parts is reduced, reach green compact 6 arc two sides maximal densities and punch 9 platforms and carry out the transition to circular arc place 10 least part density and reach unanimity, help green compact 6 each several part density evenly.
Claims (1)
1. the permanent ferrite magnetic tile mould includes punch, is enclosed within outer die of punch and the water sucting plate that is positioned at the die upside, it is characterized in that: transition circle cambered surface under between the flat surface of both sides, described die upper end and the arc surface of die being; Be last transition circle cambered surface between the lower surface of described water sucting plate both sides and the arc surface of water sucting plate; The arc surface of described die, down the transition circle cambered surface is respectively with the arc surface of water sucting plate, the transition circle cambered surface is mutually to cooperating down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201811658U CN201566023U (en) | 2009-12-11 | 2009-12-11 | Permanent magnetic ferrite magnetic shoe mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201811658U CN201566023U (en) | 2009-12-11 | 2009-12-11 | Permanent magnetic ferrite magnetic shoe mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201566023U true CN201566023U (en) | 2010-09-01 |
Family
ID=42658308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201811658U Expired - Lifetime CN201566023U (en) | 2009-12-11 | 2009-12-11 | Permanent magnetic ferrite magnetic shoe mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201566023U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213191A (en) * | 2013-05-02 | 2013-07-24 | 鞍山市德康磁性材料有限责任公司 | Mold for rectifying deformation of permanent magnetic ferrite product |
| 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 |
| CN113334531A (en) * | 2020-02-18 | 2021-09-03 | 湖南航天磁电有限责任公司 | Large-central-angle magnetic shoe forming upper die and large-central-angle magnetic shoe forming method |
-
2009
- 2009-12-11 CN CN2009201811658U patent/CN201566023U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213191A (en) * | 2013-05-02 | 2013-07-24 | 鞍山市德康磁性材料有限责任公司 | Mold for rectifying deformation of permanent magnetic ferrite product |
| 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 |
| CN113334531A (en) * | 2020-02-18 | 2021-09-03 | 湖南航天磁电有限责任公司 | Large-central-angle magnetic shoe forming upper die and large-central-angle magnetic shoe forming method |
| CN113334531B (en) * | 2020-02-18 | 2024-01-19 | 湖南航天磁电有限责任公司 | Forming upper die of large central angle magnetic shoe and forming method of large central angle magnetic shoe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |