CN209785738U - Dry pressing forming die for preparing neodymium iron boron magnetic pipe body - Google Patents
Dry pressing forming die for preparing neodymium iron boron magnetic pipe body Download PDFInfo
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- CN209785738U CN209785738U CN201920843691.XU CN201920843691U CN209785738U CN 209785738 U CN209785738 U CN 209785738U CN 201920843691 U CN201920843691 U CN 201920843691U CN 209785738 U CN209785738 U CN 209785738U
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- iron boron
- neodymium iron
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Abstract
The utility model provides a dry pressing mould for preparing neodymium iron boron magnetism body, belongs to neodymium iron boron magnetism powder material shaping technical field, solves and adopts the technical problem that drilling process preparation neodymium iron boron magnetism body production efficiency is low, the waste material rate is high. The solution is as follows: the device comprises an upper die, a lower die and column cores, wherein side plates are respectively arranged on two sides of the lower die, magnetic conductive plates are arranged on the outer sides of the side plates, at least three second semicircular grooves are formed in the pressure forming surface of the lower die, and the column cores are movably arranged in the second semicircular grooves; the upper die comprises an upper die body and an upper die body, the upper die body is in prepressing connection with the upper die body, a small semicircular groove matched with the column core is formed in the pressure forming surface of the upper die body, a first semicircular groove is formed in the pressure forming surface of the upper die body, and a cylindrical through hole is formed after the second semicircular groove is buckled with the first semicircular groove. The utility model discloses preparation neodymium iron boron magnetism body need not drilling, and the waste material rate is low, and the press forming is efficient, has effectively reduced the manufacturing cost of neodymium iron boron magnetism ring body.
Description
Technical Field
The utility model belongs to the technical field of the shaping of neodymium iron boron magnetism powder material, concretely relates to is a dry pressing forming die for preparing neodymium iron boron magnetism body.
Background
Neodymium magnet (Neodymium magnet), also known as NdFeB magnet, is a generic name for powerful magnets having the chemical formula Nd2Fe14B is an artificial permanent magnet, which has the strongest magnetic force at normal temperature so far. The general preparation process of the neodymium iron boron magnet can be divided into bonding neodymium iron boron and sintering neodymium iron boron, wherein the bonding is actually injection molding, and the sintering is vacuum pumping and high-temperature heating molding.
The neodymium iron boron permanent magnet has the advantages of high cost performance, good mechanical characteristics, small volume, light weight and strong magnetism, and the magnetic force can reach about 3500 gauss in a bare magnetic state, so that the neodymium iron boron permanent magnet is the magnet with the best cost performance at present, and the neodymium iron boron permanent magnet material has the advantage of high energy density and can be widely applied to modern industry and electronic technology, such as hard disks, mobile phones, earphones, tools powered by batteries and the like.
The neodymium iron boron magnetism body is the common blank in the use, and magnetism ring body can be made in further processing of magnetism body, can adapt to the electronic equipment of different demands better. The preparation of neodymium iron boron magnetism body among the prior art is generally made by the drilling of neodymium iron boron magnetism cylinder, and not only waste time and energy, the waste material of processing out is more moreover, has increased the cost of magnetism ring body intangibly.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: in order to solve the technical problem that the production efficiency of adopting drilling technology to prepare neodymium iron boron magnetism body is low, the waste material rate is high, the utility model provides a dry pressing forming die for preparing neodymium iron boron magnetism body.
The utility model discloses a following technical scheme realizes.
The utility model provides a dry pressing forming die for preparing neodymium iron boron magnetism body, it includes mould, lower mould and post core, wherein: the two sides of the length direction of the lower die are respectively provided with a side plate, the outer side of each side plate is provided with a magnetic conduction plate, the pressure forming surface of the lower die is provided with at least three second semicircular grooves, the axial directions of the second semicircular grooves are parallel to each other, the column cores are movably arranged in the second semicircular grooves, and the axial directions of the column cores are collinear with the axial directions of the corresponding second semicircular grooves; go up the mould and reciprocate from top to bottom along the curb plate and slide, go up the mould including the pre-compaction and go up the mould with the shaping, the mould all is provided with the die shank in the top of going up mould and shaping in the pre-compaction, be provided with on the pressure shaping surface of mould on the pre-compaction with post core matched with little semicircular groove, be provided with first semicircular groove on the pressure shaping surface of mould on the shaping, first semicircular groove is the same with second semicircular groove's shape and size, forms cylindrical through-hole behind second semicircular groove and the first semicircular groove lock.
Furthermore, an annular cavity used for filling neodymium iron boron magnetic powder is arranged between the column core and the second semicircular groove, and the thickness of the annular cavity is the wall thickness of the neodymium iron boron magnetic pipe body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of dry-pressing forming die for preparing neodymium iron boron magnetism body, at first press the neodymium iron boron magnetism raw materials powder into semi-circular tile slice neodymium iron boron magnetism body, then with prefabricated semi-circular tile slice neodymium iron boron magnetism body and neodymium iron boron powder dry-pressing forming for neodymium iron boron magnetism body, provide good blank for further processing such as follow-up magnetism body sintering, the neodymium iron boron magnetism body that adopts this mould preparation need not to drill, not only the waste material rate reduces by a wide margin, and press forming is efficient, the manufacturing cost of neodymium iron boron magnetism ring body has effectively been reduced.
Drawings
Fig. 1 is an assembly structure schematic diagram of a prepressing upper die and a lower die for press forming a semicircular tile-shaped neodymium iron boron magnet.
Fig. 2 is an assembly structure diagram of the upper die and the lower die for forming the ndfeb magnetic tube.
Fig. 3 is a schematic longitudinal sectional view of fig. 2.
in the figure, 1 is a prepressing upper die, 2 is a forming upper die, 21 is a first semicircular groove, 3 is a lower die, 31 is a second semicircular groove, 4 is a column core, 5 is a magnetic conduction plate, 6 is a side plate, 7 is a die handle, and 8 is a small semicircular groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
as shown in fig. 1 to fig. 3, the dry press forming die for preparing a neodymium iron boron magnetic tube body comprises an upper die, a lower die and a column core, wherein: side plates 6 are respectively arranged on two sides of the lower die 3 in the length direction, magnetic conducting plates 5 are arranged on the outer sides of the side plates 6, at least three second semicircular grooves 31 are arranged on the pressure forming surface of the lower die 3, the axial directions of the second semicircular grooves 31 are parallel to each other, the column cores 4 are movably arranged in the second semicircular grooves 31, and the axial directions of the column cores 4 are collinear with the axial directions of the corresponding second semicircular grooves 31; go up the mould and follow the reciprocal slip from top to bottom of curb plate 6, go up the mould 2 in mould 1 and the shaping on including the pre-compaction, the mould 2's in the pre-compaction top all is provided with die shank 7 on mould 1 and the shaping, be provided with on the pressure shaping face of mould 1 in the pre-compaction and post core 4 matched with little semicircular groove 8, be provided with first semicircular groove 21 on the pressure shaping face of mould 2 in the shaping, first semicircular groove 21 is the same with the shape and the size of second semicircular groove 31, form cylindrical through-hole behind second semicircular groove 31 and the first semicircular groove 21 lock.
furthermore, an annular cavity used for filling neodymium iron boron magnetic powder is arranged between the column core and the second semicircular groove, and the thickness of the annular cavity is the wall thickness of the neodymium iron boron magnetic pipe body.
The utility model discloses a use as follows:
Prefabricating a semicircular (tile-shaped) neodymium iron boron magnetic pipe body: firstly, filling prepared neodymium iron boron magnetic raw material powder into the second semicircular groove 31, and placing a column core 4 above the filled neodymium iron boron magnetic raw material powder; then, the prepressing upper die 1 is arranged on a die holder of a press through a die handle 7; finally, starting a press, driving the prepressing upper die 1 to move downwards through the die holder, closing the prepressing upper die 1 and the lower die 3, pressing and forming a semicircular (tile-shaped) neodymium iron boron magnetic tube body between the column core 4 and the second semicircular groove 31, reversely moving the press, opening the prepressing upper die 1 and the lower die 3, taking down the prepressing upper die 1, and simultaneously taking down the semicircular (tile-shaped) neodymium iron boron magnetic tube body for later use;
Pressing and forming the neodymium iron boron magnetic pipe body: firstly, filling prepared neodymium iron boron magnetic raw material powder into a second semicircular groove 31, placing a column core 4 above the filled neodymium iron boron magnetic raw material powder, and reversely buckling a prefabricated semicircular (tile-shaped) neodymium iron boron magnetic tube body above the column core 4; then, the upper forming die 2 is arranged on a die holder of a press through a die handle 7; finally, starting a press, driving the upper forming die 2 to move downwards through a die holder by the press, and matching the upper forming die 2 and the lower forming die 3 to obtain the neodymium iron boron magnetic tube body; the press moves reversely, and the two processes of prefabrication and forming are repeated, so that the ferroboron magnetic hollow pipe body blank can be prepared efficiently with high quality, and an excellent blank is provided for further sintering.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides a dry pressing forming die for preparing neodymium iron boron magnetism body, it includes mould, lower mould (3) and post core (4), its characterized in that:
The two sides of the length direction of the lower die (3) are respectively provided with a side plate (6), the outer side of each side plate (6) is provided with a magnetic conduction plate (5), the pressure forming surface of the lower die (3) is provided with at least three second semicircular grooves (31), the axial directions of the second semicircular grooves (31) are parallel to each other, the column cores (4) are movably arranged in the second semicircular grooves (31), and the axial directions of the column cores (4) are collinear with the axial directions of the corresponding second semicircular grooves (31); go up mould along curb plate (6) reciprocal sliding from top to bottom, go up the mould (2) on mould (1) and the shaping including the pre-compaction, the mould (1) all is provided with die shank (7) in the top of mould (2) on the pre-compaction, be provided with on the pressure forming surface of mould (1) with post core (4) matched with little semicircular groove (8) on the pre-compaction, be provided with first semicircular groove (21) on the pressure forming surface of mould (2) on the shaping, first semicircular groove (21) are the same with the shape and the size of second semicircular groove (31), form cylindrical through-hole behind second semicircular groove (31) and first semicircular groove (21) lock.
2. The dry pressing molding die for preparing the neodymium iron boron magnetic tube body as claimed in claim 1, wherein: an annular cavity used for filling neodymium iron boron magnetic powder is arranged between the column core (4) and the second semicircular groove (31), and the thickness of the annular cavity is the wall thickness of the neodymium iron boron magnetic tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920843691.XU CN209785738U (en) | 2019-06-05 | 2019-06-05 | Dry pressing forming die for preparing neodymium iron boron magnetic pipe body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920843691.XU CN209785738U (en) | 2019-06-05 | 2019-06-05 | Dry pressing forming die for preparing neodymium iron boron magnetic pipe body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209785738U true CN209785738U (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920843691.XU Active CN209785738U (en) | 2019-06-05 | 2019-06-05 | Dry pressing forming die for preparing neodymium iron boron magnetic pipe body |
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| CN (1) | CN209785738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360268A (en) * | 2020-02-21 | 2020-07-03 | 浙江东阳东磁稀土有限公司 | Vertical forming die and forming method for sintered neodymium-iron-boron annular magnet |
-
2019
- 2019-06-05 CN CN201920843691.XU patent/CN209785738U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360268A (en) * | 2020-02-21 | 2020-07-03 | 浙江东阳东磁稀土有限公司 | Vertical forming die and forming method for sintered neodymium-iron-boron annular magnet |
| CN111360268B (en) * | 2020-02-21 | 2022-04-22 | 浙江东阳东磁稀土有限公司 | Vertical forming die and forming method for sintered neodymium-iron-boron annular magnet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of dry pressing mould for preparing NdFeB magnetic tube body Effective date of registration: 20220802 Granted publication date: 20191213 Pledgee: Shanxi Bank Co., Ltd. Taiyuan Branch Pledgor: Taiyuan hongriqiang magnetic material Co.,Ltd. Registration number: Y2022140000040 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230907 Granted publication date: 20191213 Pledgee: Shanxi Bank Co.,Ltd. Taiyuan Branch Pledgor: Taiyuan hongriqiang magnetic material Co.,Ltd. Registration number: Y2022140000040 |