High-orientation densified ferrite magnet and combined preparation device thereof

Abstract

The invention provides a high-orientation densified ferrite magnet and a combined preparation device thereof, and belongs to the technical field of magnetic ring manufacturing. The magnetic ring comprises a magnetic ring body, the magnetic ring body is formed by combining at least two tile-shaped magnetic blocks into a ring shape, the easy magnetization direction of the magnetic blocks is located in the radial direction of the magnetic ring body, and an integrated seamless splicing structure is arranged between the splicing faces of every two adjacent magnetic blocks. According to the magnet, the integrated seamless splicing structures are arranged on the splicing surfaces of the adjacent tile-shaped magnetic blocks, the axial fixing channels are matched with the spherical fixing holes, and the corresponding fixing parts formed through injection molding are combined, so that tight embedding between the magnetic blocks is achieved, and the defect of traditional splicing seams is overcome; meanwhile, the integrated structure enhances the connection strength of the magnetic block, avoids the problem of bonding looseness caused by impurity accumulation and uneven stress, improves the appearance consistency and structural stability of the magnetic ring, and prolongs the service life of the magnet.

Description

Technical Field

[0001] This invention belongs to the field of magnetic ring manufacturing technology, and relates to a device for preparing a combination of highly oriented dense ferrite magnets and highly oriented dense ferrite magnets. Background Technology

[0002] Traditional high-orientation ferrite magnets are typically assembled from multiple independent magnetic segments bonded together with adhesive. The assembly process requires cleaning and applying adhesive to the joint surfaces of each segment individually, followed by manual alignment and assembly. This process is not only cumbersome, highly reliant on manual labor, and inefficient, but also makes it difficult to precisely control the amount of adhesive applied and the alignment accuracy. Uneven adhesive application can lead to gaps or excess adhesive between adjacent segments, while alignment deviations can cause segment misalignment. Both of these factors combine to create noticeable seams formed by exposed adhesive or gaps. These exposed seams severely compromise the appearance and aesthetics of the magnet ring, resulting in insufficient surface flatness. During subsequent installation and use, these seams easily become dead zones for impurities to accumulate, and under stress, uneven contact areas can cause stress concentration, leading to loosening and detachment of the adhesive layer, significantly reducing the structural stability of the magnet ring. In addition, the presence of seams can affect the continuity of the magnetic circuit and cause magnetic performance loss. At the same time, the risk of corrosion at the seams can shorten the service life of the magnet, which seriously restricts the application of highly oriented ferrite magnets in high-precision and high-reliability scenarios.

[0003] For example, a Chinese patent discloses an injection-molded ferrite magnetic ring structure [application number: 202220929601.0], which includes a magnetic ring body. A limiting ring is fixedly connected to the surface of the magnetic ring body. A limiting mechanism is provided on the surface of the magnetic ring body. The limiting mechanism includes an annular sleeve fixedly connected to the magnetic ring body. A compression spring is fixedly connected inside the annular sleeve. An arc-shaped rod is fixedly connected to the top of the compression spring. The arc-shaped rod is slidably connected to the annular sleeve. The top of the arc-shaped rod extends upward to the top of the annular sleeve and faces inward. The limiting mechanism has two components and is symmetrically arranged. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a highly oriented and dense ferrite magnet.

[0005] The purpose of this invention is to address the above-mentioned problems by providing an apparatus for assembling highly oriented and dense ferrite magnets.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions: A highly oriented, dense ferrite magnet includes a magnetic ring, which is composed of at least two tile-shaped magnetic blocks arranged in a ring shape. The easy magnetization direction of the magnetic blocks is located radially in the magnetic ring. An integral seamless splicing structure is provided between the splicing surfaces of two adjacent magnetic blocks. The integral seamless splicing structure includes several axial fixing channels arranged radially in the magnetic ring between the splicing surfaces of two adjacent magnetic blocks. The axial fixing channels are parallel to the axial direction of the magnetic ring. Several spherical fixing holes are provided on the side of the axial fixing channels facing the splicing surfaces, which are arranged along the axial direction of the magnetic ring. An axial fixing channel fixing component and a spherical fixing hole fixing component, respectively corresponding to the axial fixing channel and the spherical fixing hole, are formed between the splicing surfaces of two adjacent magnetic blocks by injection molding.

[0007] In the aforementioned highly oriented dense ferrite magnet, the magnetic ring is provided with several radially outer connecting channels that respectively connect the axial fixing channels at each splicing surface. Adjacent axial fixing channels are connected by radially inner connecting channels. The injection liquid used for injection molding the axial fixing channel fixing component and the spherical fixing hole fixing component enters the axial fixing channel connected to the radially outer connecting channel through the radially outer connecting channel and flows to the remaining axial fixing channels through the radially inner connecting channel.

[0008] In the aforementioned highly oriented dense ferrite magnet, the outer opening of the radially external connecting channel is located on the inner circumferential surface of the magnetic ring; the cross-section of the axially fixed channel is circular and the inner diameter of the spherical fixing hole is larger than the diameter of the axially fixed channel.

[0009] A high-orientation dense ferrite magnet assembly preparation apparatus for assembling the aforementioned high-orientation dense ferrite magnet includes a base and a top seat connected by several support rods. The base is provided with at least a tooling base plate, a lower assembly plate and an upper assembly plate in sequence from bottom to top. The top seat is provided with a lifting and opening mechanism connected to the upper assembly plate. The lower assembly plate is provided with a rectangular array of circular positioning grooves for assembling magnetic blocks into magnetic rings. A flow guide ring with an annular cross-section and concentrically arranged within the circular positioning groove is provided. The magnetic blocks are placed in the magnetic ring positioning groove between the flow guide ring and the inner wall of the circular positioning groove. The upper assembly plate is provided with an injection molding liquid distribution plate. The bottom of the upper assembly plate is provided with a circular glue inlet block corresponding to the flow guide ring and connected to the injection molding liquid distribution plate through an injection tube. The circular glue inlet block is provided with a first glue inlet channel structure. The flow guide ring is provided with a second glue inlet channel structure connecting the first glue inlet channel structure and the radially outward connecting channel.

[0010] In the above-mentioned high-orientation dense ferrite magnet assembly preparation device, the first glue inlet channel structure includes an annular glue outlet channel disposed on the circumferential surface of the circular glue inlet insert. The cross-section of the annular glue outlet channel is semi-circular and the opening faces the guide ring. The circular glue inlet insert is provided with a plurality of glue outlet connecting channels connecting the annular glue outlet channel and the injection tube.

[0011] In the aforementioned apparatus for preparing highly oriented and dense ferrite magnets, the second adhesive inlet channel structure includes an outer annular adhesive inlet channel for connecting the radially outer connecting channel on the inner circumferential surface of the magnetic ring and an inner annular adhesive inlet channel for connecting the annular adhesive outlet channel. The outer annular adhesive inlet channel is disposed on the outer circumferential surface of the guide ring, and its cross-section is semi-circular with its opening facing the magnetic ring positioning groove. The radially outer connecting channel of the magnetic ring in the magnetic ring positioning groove can be connected to the outer annular adhesive inlet channel. The inner annular adhesive inlet channel is disposed on the inner circumferential surface of the guide ring, and its cross-section is also semi-circular with its opening facing the circular adhesive inlet insert. The inner annular adhesive inlet channel and the annular adhesive outlet channel can be combined to form an annular conductive channel with a circular cross-section. The outer annular adhesive inlet channel and the inner annular adhesive inlet channel are connected by several guide rings.

[0012] In the above-mentioned apparatus for preparing highly oriented and dense ferrite magnets, the height of the inner annular glue inlet channel is lower than that of the outer annular glue inlet channel, and the guide ring connecting the channel is inclined.

[0013] In the above-mentioned high-orientation dense ferrite magnet assembly preparation device, the lifting and opening mechanism includes two lifting and opening cylinders symmetrically arranged on the top of the top seat. The output shaft of the lifting and opening cylinder passes through the top seat and is connected to the upper assembly plate. The top of the upper assembly plate is also fixedly connected with several guide columns, which pass through the top seat and slide in cooperation with the top seat.

[0014] In the above-mentioned high-orientation dense ferrite magnet assembly preparation device, the bottom of the magnetic ring positioning groove is also provided with an annular top block structure. The annular top block structure is connected to the ejector plate set between the tooling base plate and the lower assembly plate. The side of the lower assembly plate is also provided with several lifting ejector cylinders. The output shaft of the lifting ejector cylinder is connected to the ejector plate.

[0015] In the above-mentioned high-orientation dense ferrite magnet assembly preparation device, the annular top block structure includes an annular top block embedded in the bottom of the magnetic ring positioning groove and whose upper end face is flush with the bottom surface of the magnetic ring positioning groove. The bottom of the annular top block is detachably fixed with several push rods by bolts. The bottom of the push rods is connected to the ejector plate. The annular top block is provided with several countersunk holes at the bolt installation positions.

[0016] Compared with existing technologies, the advantages of this invention are: 1. The magnet achieves a tight fit between the magnet blocks by setting an integrated seamless splicing structure on the splicing surface of adjacent tile-shaped magnetic blocks. It utilizes the cooperation of axial fixing channels and spherical fixing holes, combined with corresponding injection-molded fixing components, to eliminate the defects of traditional splicing seams. At the same time, the integrated structure strengthens the connection strength of the magnetic blocks, avoids the problem of bonding loosening caused by the accumulation of impurities and uneven stress, improves the appearance consistency and structural stability of the magnetic ring, and extends the service life of the magnet.

[0017] 2. The combined preparation device constructs a stable frame through a base, top seat, and support rod. A lifting and opening mechanism drives the upper and lower assembly plates to open and close. The circular positioning groove on the lower assembly plate, in conjunction with the guide ring, achieves precise positioning of the magnetic blocks. The injection liquid distribution plate, injection tube, and circular glue inlet on the upper assembly plate, combined with the second glue inlet channel structure within the guide ring, achieve directional delivery of the injection liquid. This device replaces traditional manual assembly and glue application operations, realizing integrated operation of magnetic ring assembly and injection molding, improving the positioning accuracy and injection uniformity of the magnetic blocks, avoiding alignment deviations caused by manual operation, and significantly improving magnet preparation efficiency and product consistency.

[0018] 3. The second injection channel structure connects the outer annular injection channel to the radial outer connecting channel of the magnetic ring. The inner annular injection channel and the annular outlet channel of the circular injection insert combine to form a circular guide channel. The guide ring connects the inner and outer annular channels. This design enables seamless delivery of injection molding liquid from the circular injection insert to the magnetic ring splicing structure. The circular guide channel reduces the flow resistance of the injection molding liquid, ensuring that the injection molding liquid quickly and evenly fills all axial fixed channels and spherical fixed holes. The annular and opening orientation design of the outer annular injection channel can accurately connect to the radial outer connecting channel without adjusting the angle of the magnetic ring.

[0019] 4. The height of the inner annular inlet channel is lower than that of the outer annular inlet channel, and the guide ring connecting the channel is inclined. This allows the injection molding liquid to be buffered when flowing from the inner annular channel through the guide ring connecting channel to the higher outer annular channel, avoiding problems such as air bubbles or insufficient filling caused by the injection molding liquid stagnating in the channel. The inclined channel structure allows the injection molding liquid to form a stable pressure during the flow process, ensuring that the molding density of each fixed component is consistent and further strengthening the connection strength between the magnetic blocks.

[0020] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0021] Figure 1 This is a front view of the combined preparation apparatus; Figure 2 This is a structural schematic diagram of the lower assembly plate; Figure 3 This is a structural diagram of the upper assembly plate; Figure 4 This is a partial sectional view of the upper and lower assembly plates at the circular positioning groove; Figure 5 This is a schematic diagram of the structure when a magnetic ring is placed inside a circular positioning groove; Figure 6 This is a schematic diagram of the structure when no magnetic ring is placed in the circular positioning groove; Figure 7 This is a cross-sectional view of the magnetic ring; Figure 8 This is a structural diagram of the joint surface of the magnetic blocks; Figure 9 yes Figure 7 Enlarged diagram of point A in the middle. Detailed Implementation

[0022] like Figures 7-9 As shown, a highly oriented, dense ferrite magnet includes a magnetic ring 1, which is composed of at least two tile-shaped magnetic blocks 2 arranged in a ring shape. The easy magnetization direction of the magnetic blocks 2 is located in the radial direction of the magnetic ring 1. An integral seamless splicing structure 3 is provided between the splicing surfaces of two adjacent magnetic blocks 2. The integral seamless splicing structure 3 includes several axial fixing channels 4 arranged radially along the magnetic ring 1 between the splicing surfaces of two adjacent magnetic blocks 2. The axial fixing channels 4 are parallel to the axial direction of the magnetic ring 1. Several spherical fixing holes 5 are provided on the side of the axial fixing channels 4 facing the splicing surfaces, arranged along the axial direction of the magnetic ring 1. An axial fixing channel fixing component 6 and a spherical fixing hole fixing component 7, respectively corresponding to the axial fixing channels 4 and the spherical fixing holes 5, are formed between the splicing surfaces of two adjacent magnetic blocks 2 by injection molding.

[0023] In this invention, the magnet achieves a tight fit between the magnet blocks by setting an integrated seamless splicing structure on the splicing surface of adjacent tile-shaped magnetic blocks. By utilizing the cooperation of the axial fixing channel and the spherical fixing hole, combined with the corresponding injection-molded fixing components, the magnet blocks are tightly fitted together, eliminating the defects of traditional splicing seams. At the same time, the integrated structure strengthens the connection strength of the magnetic blocks, avoids the problem of adhesion loosening caused by the accumulation of impurities and uneven stress, improves the appearance consistency and structural stability of the magnetic ring, and extends the service life of the magnet.

[0024] Specifically, the magnetic ring 1 is provided with several radially outer connecting channels 8, which respectively connect to the axial fixing channels 4 at each splicing surface. Adjacent axial fixing channels 4 are connected by radially inner connecting channels 9. The injection molding liquid used for injection molding the axial fixing channel fixing component 6 and the spherical fixing hole fixing component 7 enters the axial fixing channel 4 connected to the radially outer connecting channel 8 through the radially outer connecting channel 8 and flows to the other axial fixing channels 4 through the radially inner connecting channel 9. By setting radially outer connecting channels and radially inner connecting channels on the magnetic ring to connect the axial fixing channels of each splicing surface, a flow path for the injection molding liquid is constructed, allowing the injection molding liquid to enter through the outer connecting channel and flow to all axial fixing channels through the inner connecting channel. This design achieves uniform distribution of the injection molding liquid, ensures the consistency of molding of each fixing component, and avoids connection defects caused by insufficient or excessive local injection molding; at the same time, it eliminates the tedious step of applying glue to each piece in the traditional way, greatly improves the assembly efficiency of the magnetic ring, and enhances the reliability of the connection between magnetic blocks.

[0025] Specifically, the outer opening of the radially outer connecting channel 8 is located on the inner circumferential surface of the magnetic ring 1; the cross-section of the axially fixing channel 4 is circular, and the inner diameter of the spherical fixing hole 5 is larger than the diameter of the axially fixing channel 4. The outer opening of the radially outer connecting channel is located on the inner circumferential surface of the magnetic ring, which facilitates the precise introduction of the injection molding liquid; the axially fixing channel adopts a circular cross-section, and the inner diameter of the spherical fixing hole is larger than the channel diameter, so that the injection-molded spherical fixing component forms a reverse limiting structure. This design enhances the tightness of the fitting between the fixing component and the magnetic block, and prevents the magnetic block from relative displacement when subjected to force; at the same time, the inner circumferential opening design avoids the injection port being exposed and affecting the appearance of the magnetic ring, and the circular channel structure facilitates the smooth flow of the injection molding liquid, further improving the seamlessness and stability of the splicing structure.

[0026] like Figures 1-6As shown, a high-orientation dense ferrite magnet assembly preparation device for assembling such a high-orientation dense ferrite magnet includes a base 11 and a top seat 12 connected by several support rods 10. The base 11 is provided with at least a tooling base plate 13, a lower assembly plate 14, and an upper assembly plate 15 arranged sequentially from bottom to top. The top seat 12 is provided with a lifting and opening mechanism 16 connected to the upper assembly plate 15. The lower assembly plate 14 is provided with several circular positioning grooves arranged in a rectangular array for assembling magnetic blocks 2 into magnetic rings 1. Each circular positioning groove has a protruding annular cross-section that is circular with the magnetic ring. A guide ring 17 is concentrically arranged with a circular positioning groove. The magnetic block 2 is placed in a magnetic ring positioning groove 18 between the guide ring 17 and the inner wall of the circular positioning groove. An injection liquid diversion plate 19 is provided in the upper assembly plate 15. A circular glue inlet insert 21 is provided at the bottom of the upper assembly plate 15, which corresponds to the guide ring 17 and is connected to the injection liquid diversion plate 19 through the injection tube 20. A first glue inlet flow channel structure 22 is provided in the circular glue inlet insert 21. A second glue inlet flow channel structure 23 is provided in the guide ring 17, which connects the first glue inlet flow channel structure 22 and the radially outward connecting channel 8. The combined preparation device constructs a stable frame through a base, top seat, and support rod. A lifting and opening mechanism drives the upper and lower assembly plates to open and close. The circular positioning groove on the lower assembly plate, in conjunction with the guide ring, achieves precise positioning of the magnetic blocks. The injection liquid distribution plate, injection tube, and circular glue inlet on the upper assembly plate, combined with the second glue inlet channel structure within the guide ring, achieve directional delivery of the injection liquid. This device replaces traditional manual assembly and glue application operations, realizing integrated operation of magnetic ring assembly and injection molding, improving the positioning accuracy and injection uniformity of the magnetic blocks, avoiding alignment deviations caused by manual operation, and significantly improving magnet preparation efficiency and product consistency.

[0027] Specifically, the first injection channel structure includes an annular discharge channel 24 disposed on the circumferential surface of the circular injection insert 21. The annular discharge channel 24 has a semi-circular cross-section and its opening faces the guide ring 17. The circular injection insert 21 is provided with a plurality of discharge connecting channels 25 connecting the annular discharge channel 24 and the injection tube 20. The first injection channel structure adopts a design of annular discharge channel combined with discharge connecting channels. The opening of the annular discharge channel faces the guide ring, and the discharge connecting channels connect the injection tube and the annular discharge channel. This design allows the injection molding liquid to enter the annular discharge channel evenly after being diverted, achieving 360° discharge without dead angles and avoiding the problem of uneven distribution of injection molding liquid caused by single-sided injection. The annular channel with a semi-circular cross-section fits tightly with the guide ring, ensuring that all injection molding liquid is introduced into the subsequent channel structure, improving the utilization rate of injection molding liquid and the molding quality of fixed parts.

[0028] Specifically, the second glue inlet channel structure 23 includes an outer annular glue inlet channel 26 for connecting the radially outer connecting channel 8 on the inner circumferential surface of the magnetic ring 1 and an inner annular glue inlet channel 27 for connecting the annular glue outlet channel 24. The outer annular glue inlet channel 26 is disposed on the outer circumferential surface of the guide ring 17. The cross-section of the outer annular glue inlet channel 26 is semi-circular and the opening faces the magnetic ring positioning groove 18. The radially outer connecting channel 8 of the magnetic ring 1 in the magnetic ring positioning groove 18 can be connected to the outer annular glue inlet channel 26. The inner annular glue inlet channel 27 is disposed on the inner circumferential surface of the guide ring 17. The cross-section of the inner annular glue inlet channel 27 is also semi-circular and the opening faces the circular glue inlet insert 21. The inner annular glue inlet channel 27 and the annular glue outlet channel 24 can be combined to form an annular guide channel with a circular cross-section. The outer annular glue inlet channel 26 and the inner annular glue inlet channel 27 are connected by a plurality of guide rings connecting channels 28. The second injection channel structure connects the outer annular injection channel to the radially outer connecting channel of the magnetic ring. The inner annular injection channel and the annular outlet channel of the circular injection insert combine to form a circular guide channel. The guide ring connects the inner and outer annular channels. This design enables seamless delivery of injection molding liquid from the circular injection insert to the magnetic ring splicing structure. The circular guide channel reduces the flow resistance of the injection molding liquid, ensuring that the injection molding liquid quickly and evenly fills all axial fixed channels and spherical fixed holes. The annular and opening orientation design of the outer annular injection channel can accurately connect to the radially outer connecting channel without adjusting the angle of the magnetic ring.

[0029] Preferably, the height of the inner annular injection channel 27 is lower than that of the outer annular injection channel 26, and the guide ring connecting channel 28 is inclined. The lower height of the inner annular injection channel and the inclined arrangement of the guide ring connecting channel buffer the flow of the injection molding liquid from the inner annular channel through the guide ring connecting channel to the higher outer annular channel, preventing the injection molding liquid from stagnating in the channel and causing air bubbles or insufficient filling. The inclined channel structure creates stable pressure during the flow of the injection molding liquid, ensuring consistent molding density of each fixed component and further strengthening the connection strength between the magnetic blocks.

[0030] Specifically, the lifting and opening mechanism 16 includes two symmetrically arranged lifting and opening cylinders 29 on the top of the top seat 12. The output shaft of the lifting and opening cylinder 29 passes through the top seat 12 and is connected to the upper assembly plate 15. Several guide columns are also fixedly connected to the top of the upper assembly plate 15, and these guide columns pass through the top seat 12 and slide in cooperation with it. The lifting and opening mechanism uses symmetrically arranged lifting and opening cylinders to drive the upper assembly plate, and the guide columns passing through the top seat achieve smooth lifting and lowering of the upper assembly plate. This design ensures precise alignment of the upper and lower assembly plates, avoids misalignment during opening and closing, and improves the accuracy of magnetic block positioning and injection molding operations. The symmetrical cylinder drive ensures uniform force on the upper assembly plate, extending the service life of the equipment. Simultaneously, the guide column structure enhances the stability of the mechanism's operation, enabling efficient switching between assembly and injection molding processes.

[0031] Preferably, the bottom of the magnetic ring positioning groove 18 is further provided with an annular top block structure 30, which is connected to an ejector plate 31 disposed between the tooling base plate 13 and the lower assembly plate 14. The lower assembly plate 14 is also provided with several lifting ejector cylinders 32 on its side, and the output shaft of each lifting ejector cylinder 32 is connected to the ejector plate 31. The annular top block structure at the bottom of the magnetic ring positioning groove, in conjunction with the ejector plate and the lifting ejector cylinders, enables automatic ejection of the magnetic ring after molding. This design replaces the traditional manual removal method, avoiding damage to the magnetic ring caused by manual operation and improving removal efficiency. The ejection structure ensures a smooth and controllable demolding process for the magnetic ring, guaranteeing the integrity of the magnetic ring's appearance and dimensional accuracy. It also simplifies the operation process, reduces manual labor intensity, and improves the automation level of the equipment.

[0032] Specifically, the annular top block structure 30 includes an annular top block 33 embedded in the bottom of the magnetic ring positioning groove 18, with its upper end face flush with the bottom surface of the magnetic ring positioning groove 18. Several push rods 34 are detachably fixed to the bottom of the annular top block 33 by bolts. The bottom of each push rod 34 is connected to an ejector plate 31. Several countersunk holes 35 are provided at the bolt mounting positions on the annular top block 33. The annular top block is detachably connected to the push rods by bolts, and the countersunk holes at the bolt mounting positions ensure that the upper end face of the annular top block is flush with the bottom surface of the magnetic ring positioning groove. This design ensures the flatness of the magnetic block during placement, avoiding positioning deviations; the detachable connection facilitates the replacement and maintenance of the annular top block, extending the service life of the component; the countersunk hole structure hides the bolt components, preventing bolt protrusion from affecting the positioning accuracy of the magnetic ring, further ensuring the consistency and stability of magnet manufacturing.

[0033] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A highly oriented, dense ferrite magnet, comprising a magnetic ring (1), characterized in that, The magnetic ring (1) is composed of at least two tile-shaped magnetic blocks (2) forming a ring. The easy magnetization direction of the magnetic blocks (2) is in the radial direction of the magnetic ring (1). An integrated seamless splicing structure (3) is provided between the splicing surfaces of two adjacent magnetic blocks (2). The integrated seamless splicing structure (3) includes several axial fixing channels (4) arranged radially along the magnetic ring (1) between the splicing surfaces of two adjacent magnetic blocks (2). The axial fixing channels (4) are parallel to the axial direction of the magnetic ring (1). Several spherical fixing holes (5) are provided on the side of the axial fixing channels (4) facing the splicing surface. An axial fixing channel fixing component (6) and a spherical fixing hole fixing component (7) corresponding to the axial fixing channel (4) and the spherical fixing hole (5) are formed by injection molding between the splicing surfaces of two adjacent magnetic blocks (2).

2. The highly oriented, dense ferrite magnet according to claim 1, characterized in that, The magnetic ring (1) is provided with several radially outer connecting channels (8) that are respectively connected to the axial fixing channels (4) at each splicing surface. Two adjacent axial fixing channels (4) are connected by radially inner connecting channels (9). The injection liquid used for injection molding of the axial fixing channel fixing component (6) and the spherical fixing hole fixing component (7) enters the axial fixing channel (4) connected to the radially outer connecting channel (8) through the radially outer connecting channel (8) and flows to the other axial fixing channels (4) through the radially inner connecting channel (9).

3. The highly oriented, dense ferrite magnet according to claim 2, characterized in that, The outer opening of the radial outer connecting channel (8) is located on the inner circumferential surface of the magnetic ring (1); the cross section of the axial fixing channel (4) is circular and the inner diameter of the spherical fixing hole (5) is larger than the diameter of the axial fixing channel (4).

4. A fabrication apparatus for assembling highly oriented dense ferrite magnets according to claims 1-3, characterized in that, It includes a base (11) and a top seat (12) connected by several support rods (10). The base (11) is provided with a tooling base plate (13), a lower assembly plate (14) and an upper assembly plate (15) from bottom to top. The top seat (12) is provided with a lifting and opening mechanism (16) connected to the upper assembly plate (15). The lower assembly plate (14) is provided with a rectangular array of circular positioning grooves for assembling magnetic blocks (2) into magnetic rings (1). A guide ring (17) with an annular cross section and concentrically arranged with the circular positioning groove is provided in the circular positioning groove. The magnetic block (2) is placed in the magnetic ring positioning groove (18) between the guide ring (17) and the inner wall of the circular positioning groove. The upper assembly plate (15) is provided with a molding liquid distribution plate (19). The bottom of the upper assembly plate (15) is provided with a circular glue inlet (21) corresponding to the guide ring (17) and connected to the molding liquid distribution plate (19) through the injection tube (20). The circular glue inlet (21) is provided with a first glue inlet channel structure (22). The guide ring (17) is provided with a second glue inlet channel structure (23) connecting the first glue inlet channel structure (22) and the radially outward connecting channel (8).

5. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 4, characterized in that, The first glue inlet channel structure includes an annular glue outlet channel (24) disposed on the circumferential surface of the circular glue inlet insert (21). The annular glue outlet channel (24) has a semi-circular cross section and its opening faces the guide ring (17). The circular glue inlet insert (21) is provided with a plurality of glue outlet connecting channels (25) connecting the annular glue outlet channel (24) and the injection tube (20).

6. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 5, characterized in that, The second glue inlet channel structure (23) includes an outer annular glue inlet channel (26) for connecting the radially outer connecting channel (8) on the inner circumferential surface of the magnetic ring (1) and an inner annular glue inlet channel (27) for connecting the annular glue outlet channel (24). The outer annular glue inlet channel (26) is disposed on the outer circumferential surface of the guide ring (17). The cross-section of the outer annular glue inlet channel (26) is semi-circular and the opening faces the magnetic ring positioning groove (18). The radially outer connecting channel (8) of the magnetic ring (1) in the magnetic ring positioning groove (18) is... The channel (8) can be connected to the outer annular glue inlet channel (26). The inner annular glue inlet channel (27) is set on the inner circumferential surface of the guide ring (17). The cross-section of the inner annular glue inlet channel (27) is also semi-circular and the opening faces the circular glue inlet insert (21). The inner annular glue inlet channel (27) and the annular glue outlet channel (24) can be combined to form an annular guide channel with a circular cross-section. The outer annular glue inlet channel (26) and the inner annular glue inlet channel (27) are connected by several guide rings to the channel (28).

7. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 6, characterized in that, The height of the inner annular glue inlet channel (27) is lower than that of the outer annular glue inlet channel (26), and the guide ring connecting channel (28) is inclined.

8. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 4, characterized in that, The lifting and opening mechanism (16) includes two lifting and opening cylinders (29) symmetrically arranged on the top of the top seat (12). The output shaft of the lifting and opening cylinder (29) passes through the top seat (12) and is connected to the upper assembly plate (15). The top of the upper assembly plate (15) is also fixedly connected with several guide columns, which pass through the top seat (12) and slide with the top seat (12).

9. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 4, characterized in that, The bottom of the magnetic ring positioning groove (18) is also provided with an annular top block structure (30), which is connected to the ejector plate (31) between the tooling base plate (13) and the lower assembly plate (14). The side of the lower assembly plate (14) is also provided with several lifting ejector cylinders (32), and the output shaft of the lifting ejector cylinder (32) is connected to the ejector plate (31).

10. The apparatus for preparing a highly oriented, dense ferrite magnet assembly according to claim 9, characterized in that, The annular top block structure (30) includes an annular top block (33) embedded in the bottom of the magnetic ring positioning groove (18) and whose upper end face is flush with the bottom surface of the magnetic ring positioning groove (18). The bottom of the annular top block (33) is detachably fixed with several push rods (34) by bolts. The bottom of the push rods (34) is connected to the ejector plate (31). The annular top block (33) is provided with several countersunk holes (35) at the bolt installation positions.

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