CN210146986U - Vacuum dry pressing forming device for preparing neodymium iron boron magnetic tube body - Google Patents
Vacuum dry pressing forming device for preparing neodymium iron boron magnetic tube body Download PDFInfo
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- CN210146986U CN210146986U CN201920842763.9U CN201920842763U CN210146986U CN 210146986 U CN210146986 U CN 210146986U CN 201920842763 U CN201920842763 U CN 201920842763U CN 210146986 U CN210146986 U CN 210146986U
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Abstract
The utility model provides a vacuum dry pressing forming device 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 technology preparation neodymium iron boron magnetism body production efficiency is low, the waste material rate is high. The solution is as follows: this device is including dry pressing forming die and evacuating device, and evacuating device includes evacuation pump, evacuation workstation and the cover body, and dry pressing forming die adsorbs in evacuation workstation's top, and dry pressing forming die includes mould, lower mould, post core, upper die base, hydraulic pressure depression bar, deflector, guide arm and hydraulic cylinder, goes up the mould and goes up the mould including the pre-compaction on the mould and the shaping, and the lower mould both sides are provided with the curb plate respectively, and the outside of curb plate is provided with the magnetic conduction board. 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 vacuum dry pressing forming device 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 that processes out is more moreover, and the neodymium iron boron magnetism body blank that makes is very easily oxidized 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 adopt drilling technology preparation neodymium iron boron magnetism body production efficiency low, the waste material rate is high, easily by oxidation, the utility model provides a vacuum dry pressing forming device for preparing neodymium iron boron magnetism body.
The utility model discloses a following technical scheme realizes.
The utility model provides a vacuum dry pressing forming device for preparing neodymium iron boron magnetism body, it includes dry pressing forming die and evacuating device, wherein:
the vacuumizing device comprises a vacuumizing pump, a vacuumizing workbench and a cover body, a cavity is arranged at the lower part of the vacuumizing workbench, the vacuumizing pump is communicated with the cavity of the vacuumizing workbench through a pipeline, a grid-shaped groove is arranged on the upper surface of the vacuumizing workbench, and a through hole is formed in the cross-shaped intersection point of the grid-shaped groove; the cover body covers the upper part of the vacuumizing workbench, and a first sealing ring is arranged on the inner side wall of the opening position of the cover body;
the dry pressing forming die is adsorbed above the vacuumizing workbench and comprises an upper die, a lower die, a column core, an upper die base, a hydraulic pressure rod, a guide plate, a guide rod and a hydraulic oil cylinder, wherein the upper die comprises a prepressing upper die and a forming upper die, and die handles are arranged above the prepressing upper die and the forming upper die; at least three guide rods are vertically and upwards arranged above the vacuumizing workbench, guide holes are formed in the positions, corresponding to the guide rods, of the guide plates, and the guide plates reciprocate along the guide rods; the hydraulic pressure rod is vertically arranged downwards, the upper end part of the hydraulic pressure rod is connected with the hydraulic oil cylinder, the hydraulic pressure rod sequentially penetrates through the guide plate and the cover body from top to bottom and extends into the cover body, a second sealing ring is arranged at the contact part of the cover body and the hydraulic pressure rod, the lower end part of the hydraulic pressure rod is fixedly connected with the upper die base, and the prepressing upper die or the forming upper die is arranged on the upper die base through the die shank;
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 about the curb plate and slide, go up the mould including the pre-compaction and go up the mould in the shaping, be provided with on the pressure shaping surface of mould in the pre-compaction with post core matched with little semicircular groove, be provided with first semicircular groove on the pressure shaping surface of mould in 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.
Furthermore, a sealing groove is formed in the position, corresponding to the cover body, of the upper surface of the vacuumizing workbench.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a pair of vacuum dry pressing forming device for preparing neodymium iron boron magnetism body, place dry pressing forming die in the lid of evacuation and make up, at first press the neodymium iron boron magnetism raw materials powder into semi-circular tile slice neodymium iron boron magnet, then dry pressing forming is the neodymium iron boron magnetism body with prefabricated semi-circular tile slice neodymium iron boron magnet and neodymium iron boron powder, further processing such as sintering for follow-up magnetism body provides good blank, 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 the press forming is efficient, the manufacturing cost of neodymium iron boron magnetism ring body has effectively been reduced.
Drawings
Fig. 1 is a schematic view of the sectional structure of the present invention.
Fig. 2 is an assembly structure schematic diagram of the prepressing upper die and the lower die for press forming the semicircular tile-shaped neodymium iron boron magnet.
Fig. 3 is an assembly structure diagram of the upper and lower dies for forming the ndfeb magnetic tube.
Fig. 4 is a schematic top view of the vacuum table.
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, 8 is a small semicircular groove, 9 is a vacuum pump, 10 is a vacuum pumping worktable, 11 is a through hole, 12 is a hydraulic oil cylinder, 13 is a first sealing ring, 14 is a cover body, 15 is an upper die base, 16 is a hydraulic pressure rod, 17 is a second sealing ring, 18 is a guide plate, and 19 is a guide rod.
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 4, the vacuum dry-pressing molding device for preparing a neodymium-iron-boron magnetic tube body comprises a dry-pressing molding die and a vacuum pumping device, wherein:
the vacuumizing device comprises a vacuumizing pump 9, a vacuumizing workbench 10 and a cover body 14, a cavity is arranged at the lower part of the vacuumizing workbench 10, the vacuumizing pump 9 is communicated with the cavity of the vacuumizing workbench 10 through a pipeline, a grid-shaped groove is arranged on the upper surface of the vacuumizing workbench 10, and a through hole 11 is formed in the cross-shaped intersection point of the grid-shaped groove; the cover body 14 covers the upper part of the vacuumizing workbench 10, and a first sealing ring 13 is arranged on the inner side wall of the opening position of the cover body;
the dry pressing forming die is adsorbed above the vacuumizing workbench 10 and comprises an upper die 2, a lower die 3, a column core 4, an upper die seat 15, a hydraulic pressure rod 16, a guide plate 18, a guide rod 19 and a hydraulic oil cylinder 12, the upper die comprises a prepressing upper die 1 and a forming upper die 2, and die handles 7 are arranged above the prepressing upper die 1 and the forming upper die 2; at least three guide rods 19 are vertically and upwards arranged above the vacuumizing workbench 10, guide holes are formed in the positions, corresponding to the guide rods 19, of the guide plates 18, and the guide plates 18 reciprocate along the guide rods 19; the hydraulic pressure rod 16 is vertically arranged downwards, the upper end part of the hydraulic pressure rod 16 is connected with the hydraulic oil cylinder 12, the hydraulic pressure rod 16 sequentially penetrates through the guide plate 18 and the cover body 14 from top to bottom and extends into the cover body 14, a second sealing ring 17 is arranged at the contact part of the cover body 14 and the hydraulic pressure rod 16, the lower end part of the hydraulic pressure rod 16 is fixedly connected with the upper die base 15, and the prepressing upper die 1 or the forming upper die 2 is arranged on the upper die base 15 through the die shank 7;
Further, 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.
Further, a sealing groove is formed on the upper surface of the vacuum pumping platform 10 at a position corresponding to the cover 14.
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 a second semicircular groove 31, placing a column core 4 above the filled neodymium iron boron magnetic raw material powder, placing a dry pressing forming die above a vacuumizing workbench 10, sequentially penetrating a hydraulic pressure rod 16 through a guide plate 18 and a cover body 14 from top to bottom and extending to the interior of the cover body 14, installing a prepressing upper die 1 on a die holder of a press through a die handle 7, enabling the cover body 14 to be buckled above the vacuumizing workbench 10, starting a vacuumizing pump 10, and exhausting air in the cover body 14; finally, a hydraulic oil cylinder 12 is started, the hydraulic oil cylinder 12 drives a prepressing upper die 1 to move downwards through a guide plate 18 and an upper die base 15, the prepressing upper die 1 and a lower die 3 are assembled, a semicircular (tile-shaped) neodymium iron boron magnetic tube body is formed between a column core 4 and a second semicircular groove 31 in a pressing mode, the hydraulic oil cylinder 12 moves in the reverse direction, the prepressing upper die 1 and the lower die 3 are opened, a vacuum pump 10 is unloaded, a cover body 14 and the prepressing upper die 1 are taken down, and meanwhile, the semicircular (tile-shaped) neodymium iron boron magnetic tube body is taken down to;
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 prepressing upper die 1 is taken down, the forming upper die 2 is arranged on the upper die base 15 through the die handle 7, the dry pressing forming die is arranged again, and the interior of the cover body 14 is vacuumized; finally, starting a hydraulic oil cylinder 12, driving the upper forming die 2 to move downwards by the hydraulic oil cylinder 12 through a die holder, and matching the upper forming die 2 and the lower forming die 3 to obtain a neodymium iron boron magnetic tube body; the hydraulic oil cylinder 12 moves reversely, the vacuum pump 10 unloads, and the above two processes of prefabrication and molding are repeated, so that the ferroboron magnetic hollow pipe body blank can be prepared with high efficiency and high quality, and excellent blanks are 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 (3)
1. The utility model provides a dry pressure forming device of vacuum for preparing neodymium iron boron magnetism body, it includes dry pressure forming die and evacuating device, its characterized in that:
the vacuumizing device comprises a vacuumizing pump (9), a vacuumizing workbench (10) and a cover body (14), a cavity is arranged at the lower part of the vacuumizing workbench (10), the vacuumizing pump (9) is communicated with the cavity of the vacuumizing workbench (10) through a pipeline, a grid-shaped groove is formed in the upper surface of the vacuumizing workbench (10), and a through hole (11) is formed in the cross-shaped intersection point of the grid-shaped groove; the cover body (14) is covered above the vacuumizing workbench (10), and a first sealing ring (13) is arranged on the inner side wall of the opening position of the cover body;
the dry pressing forming die is adsorbed above the vacuumizing workbench (10), and comprises an upper die (2), a lower die (3), a column core (4), an upper die base (15), a hydraulic pressure rod (16), a guide plate (18), a guide rod (19) and a hydraulic oil cylinder (12), wherein the upper die comprises a prepressing upper die (1) and a forming upper die (2), and die handles (7) are arranged above the prepressing upper die (1) and the forming upper die (2); at least three guide rods (19) are vertically and upwards arranged above the vacuumizing workbench (10), guide holes are formed in the positions, corresponding to the guide rods (19), of the guide plates (18), and the guide plates (18) reciprocate along the guide rods (19); the hydraulic press rod (16) is vertically arranged downwards, the upper end part of the hydraulic press rod (16) is connected with the hydraulic oil cylinder (12), the hydraulic press rod (16) sequentially penetrates through the guide plate (18) and the cover body (14) from top to bottom and extends into the cover body (14), a second sealing ring (17) is arranged at the contact part of the cover body (14) and the hydraulic press rod (16), the lower end part of the hydraulic press rod (16) is fixedly connected with the upper die holder (15), and the prepressing upper die (1) or the forming upper die (2) is installed on the upper die holder (15) through the die shank (7);
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); the upper die vertically slides in a reciprocating mode along the side plate (6), a small semicircular groove (8) matched with the column core (4) is formed in the pressure forming surface of the upper die (1) in the pre-pressing mode, a first semicircular groove (21) is formed in the pressure forming surface of the upper die (2) in the forming mode, the first semicircular groove (21) is identical to the second semicircular groove (31) in shape and size, and the second semicircular groove (31) is buckled with the first semicircular groove (21) to form a cylindrical through hole.
2. The vacuum dry-pressing forming device for preparing the neodymium-iron-boron magnetic pipe body according to claim 1, characterized in that: 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.
3. The vacuum dry-pressing forming device for preparing the neodymium-iron-boron magnetic pipe body according to claim 1, characterized in that: and a sealing groove is arranged at the position corresponding to the position of the cover body (14) on the upper surface of the vacuumizing workbench (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842763.9U CN210146986U (en) | 2019-06-05 | 2019-06-05 | Vacuum dry pressing forming device for preparing neodymium iron boron magnetic tube body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920842763.9U CN210146986U (en) | 2019-06-05 | 2019-06-05 | Vacuum dry pressing forming device for preparing neodymium iron boron magnetic tube body |
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| CN210146986U true CN210146986U (en) | 2020-03-17 |
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| CN201920842763.9U Active CN210146986U (en) | 2019-06-05 | 2019-06-05 | Vacuum dry pressing forming device for preparing neodymium iron boron magnetic tube body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628141A (en) * | 2022-03-29 | 2022-06-14 | 山西大缙华磁性材料有限公司 | Direct molding device and molding method for hollow cylindrical sintered neodymium-iron-boron magnet |
| CN116944497A (en) * | 2023-09-18 | 2023-10-27 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
-
2019
- 2019-06-05 CN CN201920842763.9U patent/CN210146986U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628141A (en) * | 2022-03-29 | 2022-06-14 | 山西大缙华磁性材料有限公司 | Direct molding device and molding method for hollow cylindrical sintered neodymium-iron-boron magnet |
| CN116944497A (en) * | 2023-09-18 | 2023-10-27 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
| CN116944497B (en) * | 2023-09-18 | 2023-12-08 | 泰州市华诚钨钼制品有限公司 | Tungsten molybdenum alloy piece shaping pressing equipment |
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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 vacuum dry pressing forming device for preparing NdFeB magnetic tube body Effective date of registration: 20220802 Granted publication date: 20200317 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: 20200317 Pledgee: Shanxi Bank Co.,Ltd. Taiyuan Branch Pledgor: Taiyuan hongriqiang magnetic material Co.,Ltd. Registration number: Y2022140000040 |