CN201845657U - Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile - Google Patents
Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile Download PDFInfo
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- CN201845657U CN201845657U CN201020595078XU CN201020595078U CN201845657U CN 201845657 U CN201845657 U CN 201845657U CN 201020595078X U CN201020595078X U CN 201020595078XU CN 201020595078 U CN201020595078 U CN 201020595078U CN 201845657 U CN201845657 U CN 201845657U
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- ferrite magnetic
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- permanent ferrite
- backwater
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Abstract
The utility model discloses an anti-backwater forming die for a wet-pressing permanent ferrite magnetic tile, which belongs to the technical field of forming the wet-pressing permanent ferrite magnetic tile. The technical points are as follows: the anti-backwater forming die for the wet-pressing permanent ferrite magnetic tile comprises a lower punch head, a concave die and an upper die water absorption board, wherein the concave die is sleeved around the lower punch head; the upper die water absorption board is arranged at the upper side of the concave die; a plurality of water adsorption holes communicated with a forming die surface are distributed on the upper die water adsorption board; the upper die water adsorption board is provided with a water storage sunk hole; each water adsorption hole is communicated with the upper part of the water storage sunk hole; and the water storage sunk hole is connected with a vacuum pumping hole. The utility model aims to provide an anti-backwater forming die for the wet-pressing permanent ferrite magnetic tile, which has simple structure, can prevent residual water in a pumping pipe from flowing back and is used for forming the permanent ferrite magnetic tile.
Description
Technical field
The utility model relates to a kind of permanent ferrite magnetic tile mould, more particularly, relates in particular to a kind of wet pressing permanent ferrite magnetic tile mould of anti-backwater.
Background technology
Permanent ferrite magnetic tile is widely used in various direct current machines because of its superiority of effectiveness, in order to replace magnet exciting coil, produces constant magnetic potential source.Because of the motor matching requirements, at the seamed edge place that the high and interior outer arc of magnetic shoe axle has a common boundary, all should chamfering.Existing most of permanent ferrite magnetic tile mould, blank generally is not with chamfering during moulding, increases chamfering process during all by behind the sintering watt of mill.So not only increase operation but also wasted raw material, a lot of for this reason enterprises develop full chamfering mould in succession, but because after patrix water sucting plate and the low punch increase chamfering, changed the Distribution of Magnetic Field of part, mould molding position, under the orientation stress of mechanical stress and magnetic field sudden change generation, can be in magnetic shoe after the moulding outer arc crack with the chamfering intersection, because product shrinks, crackle expansion causes waste product behind the sintering.Especially when blank chamfering height greater than 2mm, angle is during greater than 30 °, the crackle ratio rises, product percent of pass declines to a great extent.Because the patrix water sucting plate will design chamfering, so the patrix water sucting plate mainly adopts brill suction aperture to extract slurry moisture, disclosed patent and the existing actual patrix water sucting plate that bores the suction aperture that uses, because of reasons in structure when moulding finishes die sinking, because negative pressure reduces, moisture residual in the pumping conduit can be got back to water-absorption surface by the suction aperture, make filter paper and product wet by water, cause the short cost of filter paper life cycle to increase, blank moisture content everywhere is inhomogeneous, can crack at blank backwater place during sintering, reduce the qualification rate of blank sintering.
The utility model content
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, can
Prevent the wet pressing permanent ferrite magnetic tile mould of the anti-backwater that the residual water in the drinking-water pipe refluxes.
The technical solution of the utility model is achieved in that a kind of wet pressing permanent ferrite magnetic tile mould of anti-backwater, comprise low punch, be set in the low punch periphery die, be arranged on the patrix water sucting plate of die upside, on the patrix water sucting plate, be distributed with a plurality of suction holes that communicate with molding plane, wherein said patrix water sucting plate is provided with the water storage counterbore, each Kong Junyu water storage counterbore top that absorbs water is connected, and described water storage counterbore connects the vacuum suction eye.
In the wet pressing permanent ferrite magnetic tile mould of above-mentioned anti-backwater, described patrix water sucting plate is provided with pick trough, and the pick trough bottom all communicates with suction top, hole and water storage counterbore top, and the vacuum suction eye is positioned at the following side of water storage counterbore.
In the wet pressing permanent ferrite magnetic tile mould of above-mentioned anti-backwater, described patrix water sucting plate lower surface is provided with the last molding plane of some indent arcs, be equipped with on the last molding plane make by weak permeability magnetic material on insert, on insert and be the arc framework to be provided with fillet surface in arc framework inboard; Be provided with the compacted under die face with the outer one to one convex of last molding plane at the low punch top, be provided with on the compacted under die face with on insert and insert under corresponding, be provided with time fillet surface in the both sides, front and back of inserting down; Last molding plane, on the common forming cavity that constitutes the magnetic shoe blank of inserting, insert down.
In the wet pressing permanent ferrite magnetic tile mould of above-mentioned anti-backwater, the described angle α that goes up fillet surface is 40 °, and height h1 is 3mm; The angle β of following fillet surface is 45 °, and height h2 is 2mm.
After the utility model adopts said structure, by the water storage counterbore is set on the patrix water sucting plate, the vacuum drinking-water pipe is communicated with the suction hole indirectly, prevented residual water in the drinking-water pipe when the die sinking because negative pressure reduces and be back to magnetic shoe blank surface by the suction hole, guarantee blank everywhere moisture content evenly; Further, upper and lower mold forming face be provided with respectively make by weak permeability magnetic material on insert and under insert, and upper and lower fillet surface is set respectively on upper and lower inserting, make mould after increasing chamfering, can not change DISTRIBUTION OF MAGNETIC FIELD, thereby guarantee that Distribution of Magnetic Field is even in the compression moulding process, the blank orientation is reasonable, density distribution is even, thereby effectively improves the final qualification rate of full chamfering moulding magnetic shoe.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment in the accompanying drawing, but do not constitute any restriction of the present utility model.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the cutaway view at Figure 1A-A place;
Fig. 3 is the three-dimensional structure schematic diagram of the utility model low punch;
Fig. 4 is the B-B place broken section structural representation of Fig. 3;
Fig. 5 is the three-dimensional structure schematic diagram of the utility model patrix water sucting plate;
Fig. 6 is the local structure for amplifying schematic diagram in C place of Fig. 5;
Fig. 7 is the local structure for amplifying schematic diagram in D place of Fig. 5.
Among the figure: low punch 1, compacted under die face 1a, die 2, patrix water sucting plate 3, suction hole 3a, water storage counterbore 3b, vacuum suction eye 3c, pick trough 3d, go up molding plane 3e, on insert 4, go up fillet surface 4a, insert 5 down, fillet surface 5a down.
Embodiment
Consult Fig. 1 to shown in Figure 7, the wet pressing permanent ferrite magnetic tile mould of a kind of anti-backwater of the present utility model, comprise low punch 1, be set in the die 2 of low punch periphery, be arranged on the patrix water sucting plate 3 of die 2 upsides, patrix water sucting plate 3 lower surfaces be distributed with four indent arcs on molding plane 3e, being distributed with the diameter that communicates with last molding plane 3e on the patrix water sucting plate 3 of last molding plane 3e correspondence is the suction hole 3a of 2mm, other end opening at suction hole 3a is connected with pick trough 3d, also be provided with water storage counterbore 3b at the middle part of pick trough 3d, be communicated with respectively absorb water hole 3a and water storage counterbore 3b by pick trough 3d, be provided with the vacuum suction eye 3c that diameter is 10mm at water storage counterbore 3b lower sides, by water storage counterbore 3b, make respectively absorb water hole 3a and the indirect conducting of vacuum suction eye 3c, be equipped with on the last molding plane 3e make by weak permeability magnetic material on insert 4, on insert 4 for the arc framework, be provided with fillet surface 4a in arc framework inboard, the angle α of last fillet surface 4a is 40 °, and height h1 is 3mm; Low punch 1 top be provided with last molding plane 3e one to one outside the compacted under die face 1a of convex, be provided with on the compacted under die face 1a with on insert and 4 insert 5 under corresponding, be provided with fillet surface 5a down in 5 the both sides, front and back of inserting down, the angle β of following fillet surface 5a is 45 °, and height h2 is 2mm; Last molding plane 3e, on insert 4, the 5 common forming cavities that constitute the magnetic shoe blanks of inserting down.
In product compression moulding process, produce negative pressure by vacuum pump, moisture content in the slip is entered among the water storage counterbore 3b by filter paper, suction hole 3a, directly water is extracted out outside the mould by vacuum suction eye 3c again, because suction hole 3a and water storage counterbore 3b are separate, and water storage counterbore 3b directly is communicated with vacuum suction eye 3c, when being reduced, negative pressure can not produce a large amount of residual water, and small amount of residual water can not got back to cambered surface on the blank that has suppressed from suction hole 3a because of the setting of water storage counterbore 3b.Efficiently solve patrix water sucting plate 3 structures in the past and easily produce the defective of backwater, improve the blank sintering qualification rate.Secondly, patrix water sucting plate 3 and low punch 1 be respectively equipped with by weak permeability magnetic material make on insert 4 and down insert 5, patrix water sucting plate 3 and low punch 1 are as producing field pole, its shape is not because the upper and lower fillet surface 4a of increase, 5a and produce shape sudden change, avoided magnetic field sudden change and cusp effect, in the compression moulding process, Distribution of Magnetic Field is even like this, the blank orientation rationally, density distribution is even, can not cause various stress, can effectively improve the final qualification rate of full chamfering moulding magnetic shoe.
Claims (4)
1. the wet pressing permanent ferrite magnetic tile mould of an anti-backwater, comprise low punch (1), be set in the low punch periphery die (2), be arranged on the patrix water sucting plate (3) of die (2) upside, on patrix water sucting plate (3), be distributed with a plurality of suction holes (3a) that communicate with molding plane, it is characterized in that, described patrix water sucting plate (3) is provided with water storage counterbore (3b), each hole that absorbs water (3a) all is connected with water storage counterbore (3b) top, and described water storage counterbore (3b) connects vacuum suction eye (3c).
2. the wet pressing permanent ferrite magnetic tile mould of anti-backwater according to claim 1, it is characterized in that, described patrix water sucting plate (3) is provided with pick trough (3d), pick trough (3d) bottom all communicates with suction (3a) top, hole and water storage counterbore (3b) top, and vacuum suction eye (3c) is positioned at the following side of water storage counterbore (3b).
3. the wet pressing permanent ferrite magnetic tile mould of anti-backwater according to claim 1 and 2, it is characterized in that, described patrix water sucting plate (3) lower surface is provided with the last molding plane (3e) of some indent arcs, be equipped with on the last molding plane (3e) make by weak permeability magnetic material on insert (4), on insert (4) for the arc framework, be provided with fillet surface (4a) in arc framework inboard; Low punch (1) top be provided with last molding plane (3e) one to one outside the compacted under die face (1a) of convex, be provided with on the compacted under die face (1a) with on insert (4) insert (5) under corresponding, be provided with fillet surface (5a) down in the both sides, front and back of insert down (5); Last molding plane (3e), on insert (4), insert down (5) constitute the forming cavity of magnetic shoe blank jointly.
4. the wet pressing permanent ferrite magnetic tile mould of anti-backwater according to claim 3 is characterized in that, the described angle α that goes up fillet surface (4a) is 40 °, and height h1 is 3mm; The angle β of following fillet surface (5a) is 45 °, and height h2 is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020595078XU CN201845657U (en) | 2010-11-04 | 2010-11-04 | Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020595078XU CN201845657U (en) | 2010-11-04 | 2010-11-04 | Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845657U true CN201845657U (en) | 2011-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020595078XU Expired - Fee Related CN201845657U (en) | 2010-11-04 | 2010-11-04 | Anti-backwater forming die for wet-pressing permanent ferrite magnetic tile |
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| CN (1) | CN201845657U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111873140A (en) * | 2020-06-18 | 2020-11-03 | 宏辉磁电科技(安徽)有限公司 | Magnetic shoe inner and outer arc chamfer forming die |
| 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 |
| CN112659328A (en) * | 2020-12-23 | 2021-04-16 | 湖南航天磁电有限责任公司 | Upper die plate structure of sintering permanent magnetic ferrite forming die for wet forming |
-
2010
- 2010-11-04 CN CN201020595078XU patent/CN201845657U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111873140A (en) * | 2020-06-18 | 2020-11-03 | 宏辉磁电科技(安徽)有限公司 | Magnetic shoe inner and outer arc chamfer forming die |
| 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 |
| CN112659328A (en) * | 2020-12-23 | 2021-04-16 | 湖南航天磁电有限责任公司 | Upper die plate structure of sintering permanent magnetic ferrite forming die for wet forming |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20131104 |