CN219163185U

CN219163185U - Directional forming assembly of small neodymium iron boron cylinder

Info

Publication number: CN219163185U
Application number: CN202320347030.4U
Authority: CN
Inventors: 罗凯航; 刘海音
Original assignee: Shanghai Yirong New Materials Co ltd
Current assignee: Shanghai Yirong New Materials Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-09
Anticipated expiration: 2033-02-28

Abstract

The utility model discloses an orientation molding assembly of neodymium iron boron small cylinders, which comprises a body, wherein the body comprises an upper die and a lower die, the upper die is movably connected above the lower die along the longitudinal direction, a die cavity for forming neodymium iron boron powder into a plurality of neodymium iron boron small cylinders is formed between the upper die and the lower die when the upper die and the lower die are clamped, two ends of the die cavity are provided with abutting blocks, the abutting blocks are used for forming the end parts of the neodymium iron boron small cylinders, two sides of the die cavity are also provided with orientation magnetic poles, one end of the orientation magnetic pole is an S pole, and the other end of the orientation magnetic pole is an N pole. The utility model provides a directional forming component of neodymium-iron-boron small cylinders, which unifies the magnetic direction of neodymium-iron-boron powder, ensures the uniformity of magnetic fields when the neodymium-iron-boron powder is formed, and reduces the magnetic field intensity difference of the magnetized neodymium-iron-boron small cylinders.

Description

Directional forming assembly of small neodymium iron boron cylinder

Technical Field

The utility model relates to the field of neodymium iron boron material processing, in particular to a small neodymium iron boron cylinder directional molding assembly.

Background

Since the neodymium-iron-boron permanent magnet has high saturation magnetization, coercive force and magnetic energy product, the neodymium-iron-boron permanent magnet is widely applied to industries such as energy, traffic, machinery, medical treatment, household appliances, IT and the like since the advent of the neodymium-iron-boron permanent magnet, and the product thereof relates to a plurality of fields of national economy. A complete neodymium-iron-boron magnet needs to be subjected to the steps of proportioning, smelting, hydrogen crushing, air flow grinding, forming, isostatic pressing, oil stripping, sintering, machining forming and the like, wherein the steps of hydrogen crushing and air flow grinding are used for powdering a neodymium-iron-boron material, and subsequent forming is facilitated.

The traditional forming mode is that neodymium iron boron powder is simply filled into a corresponding mould and then isostatic pressing treatment is carried out, but the process ignores a small amount of magnetism which is not thoroughly eliminated by the neodymium iron boron powder, the magnetism is mutually offset when the directions are opposite in the neodymium iron boron powder forming process, and the magnetism is mutually overlapped when the directions are the same, so that after the neodymium iron boron powder is formed, although the neodymium iron boron powder is produced by the same batch of materials, after magnetizing is finished, the tiny difference of the magnetic field intensity exists between each neodymium iron boron magnet.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the directional forming assembly for the neodymium-iron-boron small cylinder is capable of unifying the magnetic direction of the neodymium-iron-boron powder, guaranteeing the magnetic field uniformity during the forming of the neodymium-iron-boron powder and reducing the magnetic field intensity difference of the magnetized neodymium-iron-boron small cylinder.

The utility model solves the problems by adopting the following technical scheme: the utility model provides a little cylindrical directional shaping subassembly of neodymium iron boron, includes the body, the body includes mould and lower mould, go up the mould along longitudinal direction movable connection in the top of lower mould, when last mould and lower mould compound die, go up and form between mould and the lower mould and be used for forming many little cylindrical die cavities of neodymium iron boron with neodymium iron boron powder, the both ends of die cavity are equipped with the butt piece, the butt piece is used for forming the little cylindrical tip of neodymium iron boron, still is equipped with directional magnetic pole in the both sides of die cavity, and the directional magnetic pole of one end is the S utmost point, and the directional magnetic pole of the other end is the N utmost point.

Compared with the prior art, the utility model has the advantages that: before the upper die and the lower die are matched, the directional magnetic poles are opened, so that the neodymium iron boron powder can rotate or deviate according to magnetism carried by the neodymium iron boron powder, the uniformity of the magnetic field directions of all the neodymium iron boron powder is guaranteed, then the neodymium iron boron powder is extruded and molded through the matched dies of the upper die and the lower die and the abutting blocks at the two ends of the die cavity, and therefore after the neodymium iron boron small cylinders formed in the same batch are sintered and magnetized, the magnetic field intensity difference is smaller, and the magnetic field accuracy of the neodymium iron boron small cylinders is higher.

As an improvement of the utility model, the lower die is fixedly connected to the movable seat, the movable seat is arranged on the conveyor belt to move, the body further comprises a feeding funnel, the lower die moves to the directional magnetic pole station after receiving the NdFeB powder at the feeding funnel station, and the feeding process of the NdFeB powder and the movement from the feeding funnel station to the die assembly station can be realized through the design of the conveyor belt and the feeding funnel by the improvement.

As an improvement of the utility model, the die cavity comprises a lower die cavity for forming the lower half part of the neodymium iron boron small cylinder, the lower end face of the abutting block is lower than the lower end of the lower die cavity, the upper end face of the abutting block is higher than the upper end of the lower die cavity, by the improvement, neodymium iron boron powder is relatively dispersed before being combined, and by the design that the lower end face of the abutting block is lower than the lower end of the lower die cavity, the upper end face of the abutting block is higher than the upper end of the lower die cavity, a containing groove for containing neodymium iron boron powder can be formed, neodymium iron boron powder leakage is avoided, and sufficient neodymium iron boron powder in the die cavity is ensured during die combination.

According to the utility model, the abutting spring is arranged on one side of the abutting block away from the lower die, and is used for ensuring the abutting state of the abutting block and the lower die, so that the abutting state between the abutting block and the lower die can be maintained in the moving process of the lower die, and the leakage of neodymium iron boron powder from a gap between the abutting block and the lower die is avoided.

As an improvement of the utility model, one side of the abutting block far away from the lower die is also provided with a guide connecting block, one end of the guide connecting block is fixedly arranged, the other end of the guide connecting block is provided with a guide column, the abutting block is provided with a guide hole movably connected with the guide column and used for ensuring that the abutting block moves along the axial direction of the guide column, by the improvement, the condition that the lower die is bounced left and right is unavoidable in the moving process of the lower die, the abutting block is pushed in the jumping process, the condition that the abutting block is deviated or deflected in the pushing process can be avoided through the design of the guide connecting block, and the high accuracy and the bonding compactness of the abutting block can be ensured to be still maintained after the abutting block is reset.

According to the utility model, as an improvement, the feeding funnel horizontally moves in the direction perpendicular to the moving direction of the conveyor belt at the feeding funnel station, and the feeding funnel can deviate from the lower die in the non-feeding stage, so that neodymium iron boron powder is prevented from falling onto the conveyor belt in the non-feeding stage, and the fault causing the conveying interference of the conveyor belt is avoided.

According to the utility model, the feeding funnel is fixedly connected to the moving plate, the moving plate is movably connected to the first abutting seat, when the first abutting seat abuts against the lower die, the feeding funnel moves to the upper side of the lower die to feed, through the improvement, the feeding funnel directly moves to the first abutting seat, the lower end of the feeding funnel is sealed, the feeding blocking process is completed, meanwhile, if leaked neodymium iron boron powder is retained on the first abutting seat, the conveying process of the conveyor belt is not affected, and in the subsequent feeding process, the leaked neodymium iron boron powder can be pushed in the direction of the lower die through the moving plate, so that the utilization of the leaked neodymium iron boron powder is completed.

As an improvement of the utility model, the first abutting seat is arranged on one side of the lower die, the other side of the lower die is provided with the second abutting seat which abuts against the first abutting seat, through the improvement, a containing groove for containing neodymium iron boron powder is also required to be formed during feeding, the neodymium iron boron powder is prevented from leaking, and the containing groove is formed by abutting the first abutting seat and the second abutting seat against the lower die.

According to the utility model, the upper surface of the second abutting seat is provided with the collecting groove for collecting excessive neodymium iron boron powder, the bottom surface of the collecting groove is coplanar with the bottom surface of the moving plate, through the improvement, in the feeding process, in order to ensure the sufficiency of feeding, the condition that the neodymium iron boron powder is excessive due to unqualified neodymium iron boron small cylinders in the subsequent forming is avoided, and the excessive neodymium iron boron powder can be pushed into the collecting groove through the design of the collecting groove, so that the neodymium iron boron powder in the collecting groove can be reused, and the waste caused by the excessive neodymium iron boron powder is avoided.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic cross-sectional view of a mold cavity in accordance with the present utility model.

Fig. 3 is an enlarged schematic view of the die cavity of fig. 2 in accordance with the present utility model.

FIG. 4 is a schematic diagram showing the side connection structure of the upper and lower molds when the molds are closed.

Fig. 5 is a schematic view of the connection structure of the abutment block according to the present utility model.

Fig. 6 is a schematic diagram of a connection structure of the first abutment and the second abutment according to the present utility model.

The figure shows: 1. the device comprises an upper die, 2, a lower die, 2.1, a die clamping guide post, 3, a die cavity, 3.1, a lower die cavity, 4, an abutting block, 5, a directional magnetic pole, 6, a movable seat, 7, a conveyor belt, 8, a feeding funnel, 9, an abutting spring, 10, a guiding connecting block, 10.1, a guiding post, 10.2, a guiding hole, 10.3, a shaft sleeve, 11, a movable plate, 12, a first abutting seat, 13, a second abutting seat, 13.1, a collecting groove, 14 and a cylinder.

Detailed Description

Embodiments of the present utility model are further described below with reference to the accompanying drawings.

As shown in fig. 1-4, a small neodymium iron boron cylinder directional molding assembly comprises a body, the body includes mould 1 and lower mould 2, go up mould 1 along longitudinal direction movable connection in the top of lower mould 2, when last mould 1 and lower mould 2 compound die, form between upper mould 1 and the lower mould 2 and be used for forming small neodymium iron boron cylinder 'S die cavity 3 with neodymium iron boron powder, the both ends of die cavity 3 are equipped with butt piece 4, butt piece 4 is used for forming small neodymium iron boron cylinder' S tip, still is equipped with directional magnetic pole 5 in the both sides of die cavity 3, and directional magnetic pole 5 of one end is the S utmost point, and directional magnetic pole 5 of the other end is the N utmost point.

The lower die 2 is fixedly connected to the movable base 6, the movable base 6 is arranged on the conveyor belt 7 to move, the body further comprises a feeding funnel 8, the lower die 2 moves towards the directional magnetic pole 5 station after receiving neodymium iron boron powder at the station of the feeding funnel 8, the die cavity 3 comprises a lower die cavity 3.1 used for forming the lower half part of a neodymium iron boron small cylinder, the lower end face of the abutting block 4 is lower than the lower end of the lower die cavity 3.1, and the upper end face of the abutting block 4 is higher than the upper end of the lower die cavity 3.1.

As shown in fig. 4, two mold clamping guide posts 2.1 are arranged at two ends of the lower mold 2 along the conveying direction of the conveying belt 7, a mold clamping guide hole matched with the mold clamping guide post 2.1 is arranged on the upper mold 1, and the mold clamping between the upper mold 1 and the lower mold 2 can be prepared by the design of the mold clamping guide post 2.1 and the mold clamping guide hole, so that the high quality of the neodymium iron boron small cylinder formed in the mold cavity 3 is ensured.

As shown in fig. 5, one side of the abutting block 4 away from the lower die 2 is provided with an abutting spring 9, the abutting spring 9 is used for guaranteeing the abutting state of the abutting block 4 and the lower die 2, the abutting spring 9 is sleeved on an axial column and used for guaranteeing the stability of the axial elastic force of the abutting spring 9, one side of the abutting block 4 away from the lower die 2 is also provided with a guide connection block 10, one end of the guide connection block 10 is fixedly arranged, the other end of the guide connection block 10 is provided with a guide column 10.1, the abutting block 4 is provided with a guide hole 10.2 movably connected with the guide column 10.1 and used for guaranteeing that the abutting block 4 moves along the axial direction of the guide column 10.1, and because the abutting block 4 is in a strip shape, for guaranteeing the stability of abutting, two ends of one abutting block 4 along the length direction are provided with the abutting spring 9 and the guide connection block 10, wherein in order to guarantee the stability of moving between the guide connection block 10 and the abutting block 4, meanwhile, the abrasion of the abutting block 4 is avoided, the guide hole 10.2 is fixedly connected with a shaft sleeve 10.3, and the guide block 10.3 is matched with the guide column 10.1.

As shown in fig. 1 and 6, at the station of the feeding funnel 8, the feeding funnel 8 horizontally moves in the vertical direction of the moving direction of the conveyor belt 7, the feeding funnel 8 is fixedly connected to a moving plate 11, the moving plate 11 is movably connected to a first abutting seat 12, when the first abutting seat 12 abuts against the lower die 2, the feeding funnel 8 moves to the upper side of the lower die 2 for feeding, the first abutting seat 12 is arranged on one side of the lower die 2, the other side of the lower die 2 is provided with a second abutting seat 13 abutting against the first abutting seat, an aggregate groove 13.1 for collecting excessive neodymium iron boron powder is formed in the upper surface of the second abutting seat 13, and the bottom surface of the aggregate groove 13.1 is coplanar with the bottom surface of the moving plate 11.

The first supporting seat 12, the second supporting seat 13 and the moving plate 11 are respectively connected with an air cylinder 14 for driving the first supporting seat 12, the second supporting seat 13 and the moving plate 11 to move.

The foregoing is illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the claims. The present utility model is not limited to the above embodiments, and the specific structure thereof is allowed to vary. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a directional shaping subassembly of little cylinder of neodymium iron boron, includes body, its characterized in that: the body includes mould (1) and lower mould (2), go up mould (1) along longitudinal direction movable connection in the top of lower mould (2), when last mould (1) and lower mould (2) compound die, form between last mould (1) and lower mould (2) and be used for forming neodymium iron boron powder into many neodymium iron boron little cylindric die cavity (3), the both ends of die cavity (3) are equipped with butt piece (4), butt piece (4) are used for forming the tip of neodymium iron boron little cylindric, still are equipped with directional magnetic pole (5) in the both sides of die cavity (3), and directional magnetic pole (5) of one end are the S utmost point, and directional magnetic pole (5) of the other end are the N utmost point.

2. The orientation molding assembly of a small neodymium-iron-boron cylinder according to claim 1, wherein: the lower die (2) is fixedly connected to the movable base (6), the movable base (6) is arranged on the conveyor belt (7) to move, the lower die further comprises a feeding funnel (8), and the lower die (2) moves towards the station of the directional magnetic pole (5) after receiving neodymium iron boron powder at the station of the feeding funnel (8).

3. The orientation forming assembly of a small neodymium-iron-boron cylinder according to claim 2, wherein: the die cavity (3) comprises a lower die cavity (3.1) for forming the lower half part of the neodymium iron boron small cylinder, the lower end face of the abutting block (4) is lower than the lower end of the lower die cavity (3.1), and the upper end face of the abutting block (4) is higher than the upper end of the lower die cavity (3.1).

4. A neodymium-iron-boron small cylinder directional molding assembly according to claim 3, wherein: and one side of the abutting block (4) far away from the lower die (2) is provided with an abutting spring (9), and the abutting spring (9) is used for guaranteeing the abutting state of the abutting block (4) and the lower die (2).

5. The orientation molding assembly of a small neodymium-iron-boron cylinder according to claim 4, wherein: one side that lower mould (2) was kept away from to butt piece (4) still is equipped with direction connecting block (10), the one end of direction connecting block (10) is fixed to be set up, the other end of direction connecting block (10) is equipped with guide post (10.1), be equipped with on butt piece (4) with guide post (10.1) removal be connected guiding hole (10.2) for guarantee that butt piece (4) remove along the axial direction of guide post (10.1).

6. The orientation forming assembly of a small neodymium-iron-boron cylinder according to claim 2, wherein: and a feeding funnel (8) station, wherein the feeding funnel (8) horizontally moves in the vertical direction of the moving direction of the conveyor belt (7).

7. The orientation molding assembly of a small neodymium-iron-boron cylinder of claim 6, wherein: the feeding funnel (8) is fixedly connected to a moving plate (11), the moving plate (11) is movably connected to the first abutting seat (12), and when the first abutting seat (12) abuts against the lower die (2), the feeding funnel (8) moves to the upper side of the lower die (2) for feeding.

8. The orientation forming assembly of a neodymium-iron-boron small cylinder according to claim 7, wherein: the first abutting seat (12) is arranged on one side of the lower die (2), and the second abutting seat (13) which abuts against the lower die (2) is arranged on the other side of the lower die.

9. The orientation forming assembly of a neodymium-iron-boron small cylinder according to claim 8, wherein: the upper surface of second butt seat (13) is equipped with the aggregate tank (13.1) that is used for collecting excessive neodymium iron boron powder, the bottom surface in aggregate tank (13.1) and the bottom surface coplanarity of movable plate (11).