CN219393169U - Square magnet manufacturing die with high-surface-magnetism center - Google Patents

Abstract

The utility model discloses a square magnet manufacturing die with high-surface-magnetism center, which comprises an upper die and a lower die, wherein one end, close to the upper die, of the lower die is connected with a lower non-magnetic conductive block, a cylindrical bulge is arranged on the end face, connected with the lower non-magnetic conductive block, of the lower die, a concave arc groove is arranged on one side, close to the lower die, of the upper die, and the concave arc groove is connected with the upper non-magnetic conductive block. The utility model can change the surface magnetism of the magnetized magnetic blocks, thereby manufacturing square magnetic blocks with different surface magnetic intensity distribution according to the use requirement, and the whole square magnetic block has a regular block structure, good structural strength, different pressing and even distribution of magnet wire variation in the magnetization process, and good magnetization effect on a designated area.

Description

Square magnet manufacturing die with high-surface-magnetism center

Technical Field

The utility model relates to the field of die manufacturing, in particular to a die for manufacturing a square magnet with high-surface-magnetism center.

Background

Square magnets are widely used as a permanent magnet material device for sensors and motors that require special orientations. However, with the development of society, more and more square magnets are required for special performance, and the traditional square pressing is divided into a forming cavity consisting of a female die, an upper die and a lower male die, and the pressed square surface magnetism is divided into strong and weak planes, but the center of the square cannot be the highest point of the surface magnetism on the same plane, so that the special requirement cannot be met.

For example, publication number "CN210648428U" discloses "a square permanent magnet forming die", including the shaping die block, two vertical mounting grooves that set up have all been seted up at shaping die block's top both ends, four vertical electric putter who sets up is all installed to mounting groove's circumference inner wall, four electric putter's top is installed the shaping top mould that same level set up, two vertical fixed groove that sets up have all been seted up at shaping top mould's bottom both ends, four fixed groove cup joints fixedly with four electric putter respectively. However, in the actual production process, there are different requirements for setting different areas of the square magnet to have different surface magnetism, and the square magnet formed by flat upper die and lower die pressing can lead to equality of the surface magnetism everywhere, if curved surface pressing is adopted, the shape of the square magnet needs to be changed, meanwhile, the structural strength is reduced, and the pressing effect is also deteriorated.

Disclosure of Invention

Aiming at the problem that the prior art mentioned in the background art can not ensure that the surface of the square magnet is smooth and the surface magnetism is concentrated in a designated area, the utility model provides the square magnet manufacturing die with high surface magnetism in the center, which can change the surface magnetism of the magnetized magnetic blocks, so that square magnetic blocks with different surface magnetism intensity distribution can be manufactured according to the use requirement, and the whole square magnetic block has a regular block structure, good structural strength, uniform magnetic wire change distribution in the magnetizing process and good magnetizing effect on the designated area.

In order to achieve the above purpose, the present utility model adopts the following technical scheme.

The utility model provides a square magnet manufacturing die of high table magnetism in center, includes mould and lower mould, lower mould is close to mould one end and is connected with down and does not lead magnetic block, be provided with the cylindricality arch on the terminal surface that lower mould and lower do not lead magnetic block are connected, it is provided with concave arc groove to go up mould one side close to the lower mould, concave arc groove is connected with and does not lead magnetic block. In the magnetizing process of the square magnet, the surface magnetic intensity of the square magnet after final magnetization is finished is influenced according to the conditions of orientation, distribution, density and the like of a magnetic induction line formed between an upper die and a lower die, and a working surface and a non-working surface are formed according to the difference of strong and weak magnetic surfaces. The whole area of the upper surface is evenly and sparsely distributed, the lower surface is intensively distributed in the corresponding area of the columnar bulge, and the positions close to the edges of the square magnets are sparsely distributed, so that after the square magnets are molded, the lower surface, namely the magnets with the magnetic strength on the center on the working surface, is obtained, meanwhile, the height difference of the section is formed between the columnar bulge and the rest areas of the lower die, the columnar bulge is closest to the upper die, and the vertical lines of the groove surface of the concave arc groove of the upper die are all directed to the columnar bulge, so that magnetic induction lines can be gathered in the columnar bulge, and compared with the lower die with the arc-shaped bulge, most of the magnetic induction lines between the highest point and the lowest point of the bulge can be attracted to pass through the columnar bulge by the columnar bulge, so that the magnetic strength of the square magnets in the area is greatly increased.

And a plurality of water absorption through holes are formed in one side, close to the lower die, of the upper non-magnetic conductive block. Because the square magnet is pressed again and has more moisture before being pressed, the internal moisture can not be discharged in the pressing process, so that the structural strength is low, the pressing effect is checked, more fine water absorption through holes are formed in the upper non-magnetic conductive block, the square magnet which is not formed yet can be pressed in the downward pressing process of the upper die, the water absorption through holes provide a space for water to flow out, the pressing effect of the square magnet is enhanced, and the structural strength of the square magnet is improved.

The upper die comprises a lower plate, the lower plate is connected with a lower non-magnetic conductive block, one side, far away from the lower non-magnetic conductive block, of the lower plate is connected with a middle plate, the side wall of the middle plate is provided with a water outlet hole, and the water outlet hole is communicated with a water absorption through hole. The medium plate is provided with the apopore, and the apopore can be with the lateral wall discharge of the through-hole that absorbs water from the medium plate to can not produce the influence to the suppression process.

The water sucking through holes are connected with the same water outlet hole. In order to avoid the lower surface of square magnet after being pressed too rough, consequently the water absorption through hole setting can be comparatively tiny, evenly disperse on the pressing surface of non-magnetic shoe on the whole, this can all have water but the moisture is less in every water absorption through hole, if the individual drainage, and efficiency is slower, consequently connects a plurality of water absorption through holes and gathers in same apopore is concentrated, increases the water yield of every apopore, more convenient follow-up removal is collected.

The upper plate is connected with one side of the middle plate far away from the lower plate, the area of the upper plate is larger than that of the middle plate, and the edge of the upper plate is provided with a connecting groove. The upper plate is connected above the middle plate, and the upper die is connected on the machine tool through the connecting groove for adjusting the action of the upper die, so that the adjustment efficiency is improved, and safety accidents caused by overweight upper die during manual adjustment are avoided.

The side length of the upper non-magnetic conductive block is L1, the side length of the lower non-magnetic conductive block is L2, L2 is smaller than L1, and the difference between L1 and L2 is L, wherein L is more than or equal to 10mm and less than or equal to 20mm. The side length of the upper non-magnetic conductive block is larger than that of the lower non-magnetic conductive block, the side length of the square magnet is generally the same as that of the lower non-magnetic conductive block in the pressing process, when the area of the upper non-magnetic conductive block is larger than that of the square magnet, the magnetic induction line between the upper die and the lower die can be ensured to completely penetrate through the square magnet to magnetize the square magnet, meanwhile, a margin of 10-20mm is reserved between the upper non-magnetic conductive block and the side length of the square magnet, the joint of the bottom of the upper die and the upper non-magnetic conductive block is ensured not to be excessively close to the square magnet, and the phenomenon that dense magnetic induction lines are generated at the edge of the square magnet is avoided, so that the difference of surface magnetism is influenced is avoided.

In the vertical direction, a height difference exists between the upper non-magnetic conductive block and the upper die, the distance between the bottom surface of the upper non-magnetic conductive block and the lower die is H, and the distance between the bottom surface of the upper die and the lower die is H, wherein H is smaller than H. The height difference is arranged between the upper non-magnetic conductive block and the upper die, so that a part of the upper non-magnetic conductive block protrudes out of the upper die, and the step formed by the height difference can be positioned better before pressing, and meanwhile, the magnetic conductive material in the upper die can be prevented from interfering the magnetization effect at the edge of the square magnet.

The concave arc groove comprises a connecting arc groove and a positioning arc groove, wherein the two sides of the positioning arc groove are connected with the positioning arc groove, the connecting arc groove is connected with the upper non-magnetic conductive block, and the positioning arc groove is attached to the lower die. The concave arc groove comprises a connecting arc groove and a positioning arc groove, wherein the two ends of the concave arc groove are positioning sliding grooves, the connecting arc groove is arranged between the two positioning arc grooves and is connected with the upper non-magnetic conductive block, and the positioning arc grooves on the two sides are attached to the cambered surface protrusions arranged on the lower die, so that the lower die can be clamped more easily, and meanwhile, the supporting effect of the lower die on the upper die is improved.

The bottom of the positioning arc groove is provided with a positioning groove, the lower die is provided with a bulge, and the positioning groove is clamped with the bulge. The bottom of the positioning arc groove is provided with a positioning groove, and in the clamping process of the upper die and the lower die, accurate positioning is realized through the positioning groove, so that the upper die and the lower die slide along the positioning arc groove in the pressing process, and the surface of a pressed square magnet is inclined.

The beneficial effects of the utility model are as follows:

(1) The magnetic induction lines in the magnetizing process are concentrated towards a designated area of the working surface through the concave arc groove of the upper die and the columnar bulge on the lower die and respectively connected with the upper non-magnetic conductive block and the lower non-magnetic conductive block, so that the surface magnetic strength of the designated area is increased;

(2) The columnar bulge and the rest lower dies have a sectional height difference, and the magnetic induction lines are preferentially attracted by the magnets at a relatively short distance, and the side walls of the columnar bulge are perpendicular to the top surface of the lower die, so that the surrounding magnetic induction lines are all limited in the columnar bulge, and the reinforcement of a designated area is enhanced;

(3) The water absorption through holes can discharge water in the pressing process of the square magnet, so that the pressed square magnet is more compact and has better structural strength;

(4) The water absorbing holes are connected to the same water outlet hole, and water in each water absorbing hole is concentrated in the water outlet hole to be discharged, so that a good water outlet effect is obtained, and water is collected more conveniently;

(5) The areas of the upper die and the upper non-magnetic conductive block are larger than those of the square magnet, so that the magnetic conductive material in the upper die is prevented from approaching to the edge of the square magnet, the magnetization process is disturbed, and the surface magnetism at the edge is prevented from being too large;

(6) The positioning arc groove and the positioning groove can better center the upper die and the lower die, limit the deviation of the upper die in the pressing process and ensure the pressing smoothness of the square magnet.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic diagram of a magnetization process in the present utility model.

Fig. 3 is an isometric view of an upper die in the present utility model.

Fig. 4 is a schematic structural diagram of embodiment 2.

Fig. 5 is a schematic structural diagram of embodiment 3.

In the figure: the upper die is 1, the concave arc groove is 11, the connecting arc groove is 111, the positioning arc groove is 112, the positioning groove is 113, the lower plate is 12, the middle plate is 13, the water outlet hole is 131, the upper plate is 14, the connecting groove is 141, the lower die is 2, the cylindrical bulge is 21, the magnetic conduction block is not arranged under 3, the magnetic conduction block is not arranged on 4, and the water absorption through hole is 41.

Detailed Description

The utility model is further described below with reference to the drawings and specific embodiments.

Example 1:

as shown in fig. 1 and 2, a square magnet manufacturing mold with high magnetic surface in the center comprises an upper mold 1 and a lower mold 2, wherein one end, close to the upper mold 1, of the lower mold 2 is connected with a lower non-magnetic block 3, a cylindrical bulge 21 is arranged on the end face, connected with the lower non-magnetic block 3, of the lower mold 2, a concave arc groove 11 is arranged on one side, close to the lower mold 2, of the upper mold 1, and the concave arc groove 11 is connected with the upper non-magnetic block 4.

In the scheme, an upper non-magnetic conductive block 4 is arranged on an upper die 1, the upper non-magnetic conductive block 4 is arranged between the upper die 1 and the upper surface of a square magnet, a lower non-magnetic conductive block 3 is arranged on a lower die 2, the lower die 2 and the upper die 1 are made of magnetic conductive materials, magnetic fields are generated between the upper die 1 and the lower die 2, the square magnet between the upper die 1 and the lower die are magnetized, as the upper die 1 is provided with a concave arc groove 11, the upper die is connected with the upper non-magnetic conductive block 4 through the concave arc groove 11, and the lower die 2 is provided with a columnar bulge 21, wherein the columnar bulge 21 corresponds to the bottom of the concave arc groove 11, so that in the magnetization process, the area, farthest from the magnetic conductive material, of the upper surface of the square magnet is just the position corresponding to the columnar bulge 21 on the right opposite lower surface, meanwhile, the columnar bulge 21 is made of the magnetic conductive material, and the columnar bulge 21 is matched with the concave arc groove 11 of the upper die 1, so that the magnetic induction line passing through the square magnet can be deflected towards the columnar bulge 21, and the whole magnetic induction line is distributed as follows: the whole area of the upper surface is uniformly and sparsely distributed, the lower surface is intensively distributed in the corresponding area of the columnar bulge 21, and the positions close to the edges of the square magnets are sparsely distributed, so that after the square magnets are molded, magnets with magnetic strength on the center of the lower surface are obtained, meanwhile, as the section height difference is formed between the columnar bulge 21 and the rest areas of the lower die 2, the columnar bulge 21 is closest to the upper die 1, and the groove surface vertical lines of the concave arc grooves 11 of the upper die 1 are all directed to the columnar bulge 21, magnetic induction lines are gathered in the columnar bulge 21, and compared with the lower die 2 with arc-shaped bulges, the columnar bulge 21 can attract most of the magnetic induction lines between the highest point and the lowest point of the bulge to pass through the columnar bulge 21, so that the magnetic strength of the square magnets in the area is greatly increased.

As shown in fig. 3, a water absorption through hole 41 is arranged on one side of the upper non-magnetic conductive block 4 close to the lower die 2; the upper die 1 comprises a lower plate 12, the lower plate 12 is connected with a lower non-magnetic conductive block 3, one side of the lower plate 12 away from the lower non-magnetic conductive block 3 is connected with a middle plate 13, the side wall of the middle plate 13 is provided with a water outlet 131, and the water outlet 131 is communicated with a water absorption through hole 41; a plurality of water suction through holes 41 are connected to the same water outlet hole 131.

Because the square magnet is re-pressed and contains more moisture before being pressed, the internal moisture cannot be discharged in the pressing process, so that the structural strength is low, the pressing effect is checked, more fine water absorption through holes 41 are formed in the upper non-magnetic block 4, the square magnet which is not formed yet is pressed in the downward pressing process of the upper die 1, the water absorption through holes 41 provide a space for water to flow out, the pressing effect of the square magnet is enhanced, and the structural strength of the square magnet is improved; the middle plate 13 is provided with water outlet holes 131, and the water outlet holes 131 can discharge water of the water suction through holes 41 from the side wall of the middle plate 13 without influencing the pressing process; in order to avoid the situation that the lower surface of the square magnet after being pressed is too rough, the water absorbing through holes 41 are arranged to be finer and evenly dispersed on the pressing surface of the non-magnetic conductive block 4 on the whole, water is contained in each water absorbing through hole 41 but less water is discharged independently, efficiency is low, a plurality of water absorbing through holes 41 are connected to the same water outlet 131 for centralized collection, water yield of each water outlet 131 is increased, and subsequent removal and collection are facilitated.

As shown in fig. 3, an upper plate 14 is connected to one side of the middle plate 13 far away from the lower plate 12, the area of the upper plate 14 is larger than that of the middle plate 13, and a connecting groove 141 is formed at the edge of the upper plate 14.

The upper plate 14 is connected above the middle plate 13, and connects the upper die 1 on the machine tool through the connecting groove 141, so as to adjust the action of the upper die 1, improve the adjustment efficiency, and avoid safety accidents caused by overweight of the upper die 1 during manual adjustment.

As shown in FIG. 1, the side length of the upper non-magnetic conductive block 4 is L1, the side length of the lower non-magnetic conductive block 3 is L2, L2 is less than L1, and the difference between L1 and L2 is 15mm.

The side length of the upper non-magnetic conductive block 4 is larger than that of the lower non-magnetic conductive block 3, the side length of the square magnet is generally the same as that of the lower non-magnetic conductive block 3 in the pressing process, when the area of the upper non-magnetic conductive block 4 is larger than that of the square magnet, the magnetic induction line between the upper die 1 and the lower die 2 can be ensured to completely penetrate through the square magnet to magnetize the square magnet, and meanwhile, 15mm of allowance is reserved between the side length of the upper non-magnetic conductive block 4 and the side length of the square magnet, so that the joint of the bottom of the upper die 1 and the upper non-magnetic conductive block 4 is ensured not to be excessively close to the square magnet, and the phenomenon that the edge of the square magnet generates dense magnetic induction line is avoided, thereby influencing the difference of surface magnetism.

The assembly and working process of the square magnet manufacturing die with high surface magnetic center in this embodiment is as follows: firstly, the upper die 1 is provided with a concave arc groove 11 during manufacturing, an upper non-magnetic conductive block 4 with a bread shape is welded through the concave arc groove 11, a columnar bulge 21 is arranged on the lower die 2, when the upper die 1 and the lower die 2 press square magnets, the bottommost part of the concave arc groove 11 corresponds to the columnar bulge 21, the upper non-magnetic conductive block 4 is provided with water absorption through holes 41 which are uniformly distributed, the water absorption through holes 41 are communicated with water outlet holes 131 on a middle plate 13, the middle plate 13 is connected through an external water collecting device, moisture in the pressing process is collected in a concentrated mode, materials which are needed to be pressed into square magnets are placed on the lower die 2 during working, the upper die 1 is connected with the upper plate 14 through a machine tool, the upper die 1 is driven to move above the lower die 2 and are pressed, and are positioned through a positioning arc groove 112 and a positioning groove 113 during pressing, therefore, the whole magnetic sensing lines are distributed from the concave arc groove 11 of the upper die 1 to the columnar bulge 21 during pressing, the whole magnetic sensing lines are concentrated in the whole magnetic magnets present in a magnetization process, the upper surface is in a sparse state, the middle part is in the magnetic sensing line is in the magnetic sensing state, and the middle part is in the magnetic sensing surface is in the greatest surface area on the lower surface, and the surface is in the greatest surface area.

Example 2:

as shown in fig. 4, unlike in embodiment 1, in this embodiment, there is a height difference between the upper non-magnetic conductive block 4 and the upper die 1, the distance between the bottom surface of the upper non-magnetic conductive block 4 and the lower die is H, and the distance between the bottom surface of the upper die 1 and the lower die is H < H. The upper non-magnetic conductive block 4 and the upper die 1 are provided with height differences, so that a part of the upper non-magnetic conductive block 4 protrudes out of the upper die 1, and the step formed by the height differences can be positioned better before pressing, and meanwhile, the magnetic conductive material in the upper die 1 can be prevented from interfering with the magnetization effect at the edge of the square magnet.

Example 3:

as shown in fig. 5, unlike embodiment 1, in this embodiment, the concave arc groove 11 includes a connecting arc groove 111 and a positioning arc groove 112, the positioning arc groove 112 is connected to both sides of the positioning arc groove 112, the connecting arc groove 111 is connected to the upper non-magnetic conductive block 4, and the positioning arc groove 112 is attached to the lower die 2; the bottom of the positioning arc groove 112 is provided with a positioning groove 113, the lower die 2 is provided with a bulge, and the positioning groove 113 is clamped with the bulge.

The concave arc groove 11 comprises a connecting arc groove 111 and a positioning arc groove 112, positioning sliding grooves are arranged at two ends of the concave arc groove, the connecting arc groove 111 is arranged between the two positioning arc grooves 112, the connecting arc groove 111 is connected with the upper non-magnetic conductive block 4, and the positioning arc grooves 112 at two sides are attached to cambered surface protrusions arranged on the lower die 2, so that the lower die 2 can be clamped more easily, and meanwhile, the supporting effect of the lower die 2 on the upper die 1 is improved; the bottom of the positioning arc groove 112 is provided with a positioning groove 113, and in the clamping process of the upper die 1 and the lower die 2, accurate positioning is realized through the positioning groove 113, so that the upper die 1 and the lower die 2 are prevented from sliding along the positioning arc groove 112 in the pressing process, and the surface of a pressed square magnet is prevented from being inclined.

In addition to the above embodiments, the technical features of the present utility model may be rearranged and combined within the scope of the claims and the disclosure of the present utility model to form new embodiments, which may be realized by those skilled in the art without inventive effort, and thus, embodiments of the present utility model not described in detail should be considered as embodiments of the present utility model within the scope of the protection of the present utility model.

Claims (9)

1. The utility model provides a square magnet manufacturing die of high table magnetism in center, its characterized in that, including last mould (1) and lower mould (2), lower mould (2) are close to last mould (1) one end and are connected with down non-magnetic conduction piece (3), be provided with cylindricality arch (21) on the terminal surface that lower mould (2) are connected with lower non-magnetic conduction piece (3), it is provided with concave arc groove (11) to go up mould (1) and be close to lower mould (2) one side, concave arc groove (11) are connected with and go up non-magnetic conduction piece (4).

2. The die for manufacturing the square magnet with the high surface magnetic center according to claim 1, wherein a plurality of water absorption through holes (41) are formed in one side, close to the lower die (2), of the upper non-magnetic conductive block (4).

3. The square magnet manufacturing die with the high surface magnetic center according to claim 2, wherein the upper die (1) comprises a lower plate (12), the lower plate (12) is connected with a lower non-magnetic conductive block (3), one side, far away from the lower non-magnetic conductive block (3), of the lower plate (12) is connected with a middle plate (13), the side wall of the middle plate (13) is provided with a water outlet hole (131), and the water outlet hole (131) is communicated with a water suction through hole (41).

4. A die for manufacturing a square magnet with a high surface magnetic field in the center according to claim 3, wherein a plurality of the water suction holes (41) are connected to the same water outlet hole (131).

5. The square magnet manufacturing die with the high surface magnetic field in the center of claim 4, wherein an upper plate (14) is connected to one side, far away from the lower plate (12), of the middle plate (13), the area of the upper plate (14) is larger than that of the middle plate (13), and a connecting groove (141) is formed in the edge of the upper plate (14).

6. The manufacturing die of the square magnet with the high surface magnetic field in the center of any one of claims 1 to 5, wherein the side length of the upper non-magnetic conductive block (4) is L1, the side length of the lower non-magnetic conductive block (3) is L2, L2 is less than L1, and the difference between L1 and L2 is L, wherein L is more than or equal to 10mm and less than or equal to 20mm.

7. A die for manufacturing a square magnet with high surface magnetic field in the center according to any one of claims 1 to 5, wherein in the vertical direction, there is a height difference between the upper non-magnetic conductive block (4) and the upper die (1), the distance between the bottom surface of the upper non-magnetic conductive block (4) and the lower die (2) is H, and the distance between the bottom surface of the upper die (1) and the lower die (2) is H < H.

8. The square magnet manufacturing die with high magnetic flux density according to any one of claims 1 to 5, wherein the concave arc groove (11) comprises a connecting arc groove (111) and a positioning arc groove (112), the two sides of the positioning arc groove (112) are connected with the positioning arc groove (112), the connecting arc groove (111) is connected with the upper non-magnetic conductive block (4), and the positioning arc groove (112) is attached to the lower die (2).

9. The die for manufacturing the square magnet with the high surface magnetic field in the center of claim 8, wherein a positioning groove (113) is arranged at the bottom of the positioning arc groove (112), the lower die (2) is provided with a protrusion, and the positioning groove (113) is clamped with the protrusion.