CN201824453U - Female die of wet pressing magnetic field forming mold of permanent-magnet ferrite magnetic shoe - Google Patents
Female die of wet pressing magnetic field forming mold of permanent-magnet ferrite magnetic shoe Download PDFInfo
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- CN201824453U CN201824453U CN2010205371753U CN201020537175U CN201824453U CN 201824453 U CN201824453 U CN 201824453U CN 2010205371753 U CN2010205371753 U CN 2010205371753U CN 201020537175 U CN201020537175 U CN 201020537175U CN 201824453 U CN201824453 U CN 201824453U
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- die
- material hole
- female die
- magnetic shoe
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Abstract
The utility model discloses a female die of a wet pressing magnetic field forming mold of a permanent-magnet ferrite magnetic shoe, which comprises the female die. The female die is formed by compounding a matrix and a plurality of cavity sleeves; in the vertical direction, two side surfaces of every cavity sleeve are respectively provided with a round feeding hole; in the horizontal direction perpendicular to the arc-shaped surface of the female die, rectangular feeding holes are respectively arranged on the two ends of every cavity sleeve; and the round feeding holes in the vertical direction are mutually communicated with the rectangular feeding holes in the horizontal direction. By the utility model, the uniformity of the density of every cavity blank can be ensured, the non-uniform density of a magnetic shoe green ware body is prevented, the mechanical strength of a magnetic shoe finished product is improved, simultaneously, no feeding holes are arranged in the middle of the arc-shaped surface, and the consistency of the density of the arc-shaped middle of the green ware body can be ensured.
Description
Technical field
The utility model relates to permanent ferrite magnetic tile wet pressing pressing under magnetic field mould, mainly is a kind of die of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould.
Background technology
The main composition of permanent-magnet ferrite is an iron oxide, the iron oxide that will be mixed with certain water and steel ball with wet ball mill is ground to the slip of granularity 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 the effect in hydraulic press and magnetic field, form green compact, through the ripe base of high temperature sintering, grind into the magnetic shoe product at last again.
The permanent ferrite magnetic tile product is used for small and special electric machine more, and is frangible at the motor producer magnetic shoe product that often occurs installing, and the magnetic shoe product is frangible many at the arc tip position, and it is the main cause that causes magnetic shoe product bad mechanical strength that magnetic shoe arc top is secretly split.
Permanent ferrite magnetic tile product crackle is bad to mainly contain that moulding is bad to be caused, present known die structure is single hole material feeding in the middle of the arcwall face of die cavity, vertical direction material hole upper end and the just in time conducting of horizontal direction material hole, and the material hole of vertical direction upper end, material hole position in the horizontal direction is a blind hole, cause following defective easily like this: under high pressure during compacted products, slip total some again from concave die cavity by the material hole feed back in the material feeding passage, it is bad to cause the difference of magnetic shoe product arc middle part density to form the intensity of magnetic shoe product; The slip of concave die cavity is assembled to both sides from the centre during material feeding in addition, and discontented soft limit, soft angle of leading the system green compact filled at position, arc both sides; When concave die cavity is multi-cavity, the material hole of special vertical direction upper end, material hole position in the horizontal direction is a blind hole, because the frequent obstruction of material feeding passage can't in time be cleared up, causes each die cavity shot not wait, blank density is inconsistent after the compression moulding, has a strong impact on the mechanical strength of product.
The utility model content
Technical problem to be solved in the utility model provides a kind of die of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould, it can satisfy the die that permanent ferrite magnetic tile wet pressing pressing under magnetic field mould makes green compact arc middle part density and both sides reach unanimity in moulding, also can satisfy each die cavity green density of die simultaneously and reach unanimity.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of die of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould includes die, and die is composited by matrix and a plurality of die cavity cover, and at vertical direction, the two sides of each die cavity cover have circular material hole; In the horizontal direction perpendicular to the die arcwall face, the two ends of each die cavity cover have the rectangle material hole, the rectangle material hole mutual conduction of the circular material hole of described vertical direction and horizontal direction.
The circular material hole of described vertical direction upwards is communicated to water sucting plate.
The die of magnetic shoe mould is respectively being opened two horizontal rectangular material holes perpendicular to the two sides of arcwall face, be owing to the both sides of material hole in cambered surface, the cambered surface both sides are filler at first, treat to fill to the centre again after accumulation is expired, avoided the frequent material feeding unsaturation in cambered surface both sides, the uniformity that slip injects die cavity improves, and effectively prevents the soft limit of magnetic shoe green compact, soft angle phenomenon; Because the arc top does not have material hole, can prevent the phenomenon of refunding of die cavity arc top slip, improve the uniformity of each position density of magnetic shoe green compact, shrinkage stress reduces during sintering, strengthens the mechanical strength of magnetic shoe finished product middle part.
To have die now in vertical direction opened round hole, with two sides horizontal rectangular material hole conducting, and the circular material hole of vertical direction makes progress conducting to water sucting plate from horizontal direction material hole position, during the moulding compacting, seal the circular material hole and the die cavity of vertical direction upper end during the water sucting plate matched moulds, the circular material hole of vertical direction upper end is an open type during die sinking, can in time clear up material hole during obstruction, can prevent the inconsistent of each die cavity green density of multi-imprssion mould tool, also can prevent the unreal phenomenon of filling out of single die cavity slip simultaneously.Guarantee the uniformity of each die cavity blank density, effectively prevent magnetic shoe green density inequality, improve the mechanical strength of magnetic shoe finished product.Do not have material hole in the middle of the arcwall face simultaneously, can guarantee the uniformity of green compact arc middle part density.
The die cavity cover is the high abrasion high hardness material, the wide 2mm of rectangle material hole, long 10mm, moment was sealed the rectangle material hole when narrower rectangle material hole helped suppressing, and the rectangle material hole equals 1.5-2.2 times of moulding green compact lateral thickness to the vertical range of two side positions upper end.
The diameter of circular material hole is 10mm; circular material hole is upwards opened to water sucting plate simultaneously; punch is actively tied in the middle of the die during use; the rectangle material hole is higher than punch arc two sides platform 1mm-2mm during matched moulds; slip flows to the rectangle material hole then to die cavity from circular material hole; moment is sealed the rectangle material hole when easily utilizing compacting fast; water sucting plate below arch section is fit to die arch section top; they all are installed on the mould bases; water sucting plate when moulding compacting matched moulds; punch; form a die cavity between the die three; after slip injects die cavity by material hole; by hydraulic press moulding compacting, the material hole of the diameter 10mm of vertical direction has water sucting plate lower end flat surface to seal during compacting.When material hole stops up, can in time clear up after the die sinking, to guarantee each die cavity density uniformity of die.
The utility model has the advantages that:
The utility model can guarantee the uniformity of each die cavity blank density, effectively prevents magnetic shoe green density inequality, improves the mechanical strength of magnetic shoe finished product; Do not have material hole in the middle of the arcwall face simultaneously, can guarantee the uniformity of green compact arc middle part density.
Description of drawings
Fig. 1 is a front view of the present utility model.
Fig. 2 is a side view of the present utility model.
The specific embodiment
Referring to Fig. 1,2, a kind of die of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould includes die 1, and die 1 is composited by matrix 3 and a plurality of die cavity cover 2, and at vertical direction, the two sides of each die cavity cover 2 have circular material hole 4; In the horizontal direction perpendicular to the die arcwall face, the two ends of each die cavity cover 2 have rectangle material hole 5, the circular material hole 4 of described vertical direction and rectangle material hole 5 mutual conduction of horizontal direction.
Claims (2)
1. the die of a permanent ferrite magnetic tile wet pressing pressing under magnetic field mould includes die, it is characterized in that: described die is composited by matrix and a plurality of die cavity cover, and at vertical direction, the two sides of each die cavity cover have circular material hole; In the horizontal direction perpendicular to the die arcwall face, the two ends of each die cavity cover have the rectangle material hole; The rectangle material hole mutual conduction of the circular material hole of described vertical direction and horizontal direction.
2. the die of a kind of permanent ferrite magnetic tile wet pressing pressing under magnetic field mould according to claim 1 is characterized in that: the circular material hole of described vertical direction upwards is communicated to water sucting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205371753U CN201824453U (en) | 2010-09-19 | 2010-09-19 | Female die of wet pressing magnetic field forming mold of permanent-magnet ferrite magnetic shoe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205371753U CN201824453U (en) | 2010-09-19 | 2010-09-19 | Female die of wet pressing magnetic field forming mold of permanent-magnet ferrite magnetic shoe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201824453U true CN201824453U (en) | 2011-05-11 |
Family
ID=43963011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205371753U Expired - Lifetime CN201824453U (en) | 2010-09-19 | 2010-09-19 | Female die of wet pressing magnetic field forming mold of permanent-magnet ferrite magnetic shoe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201824453U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294477A (en) * | 2011-08-26 | 2011-12-28 | 四川川西磁业有限责任公司 | Permanent ferrite magnetic shoe wet pressing molding mould |
| 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 |
| CN110027094A (en) * | 2019-05-10 | 2019-07-19 | 江门市德盛高精密模具厂有限公司 | Ferrite bead radial direction wet pressing mold |
| 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 |
-
2010
- 2010-09-19 CN CN2010205371753U patent/CN201824453U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294477A (en) * | 2011-08-26 | 2011-12-28 | 四川川西磁业有限责任公司 | Permanent ferrite magnetic shoe wet pressing molding mould |
| CN102294477B (en) * | 2011-08-26 | 2013-06-19 | 四川川西磁业有限责任公司 | Permanent ferrite magnetic shoe wet pressing molding mould |
| 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 |
| CN110027094A (en) * | 2019-05-10 | 2019-07-19 | 江门市德盛高精密模具厂有限公司 | Ferrite bead radial direction wet pressing mold |
| CN110027094B (en) * | 2019-05-10 | 2023-11-14 | 黄群欢 | Ferrite magnetic ring radial wet pressing die |
| 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |