A ring-shaped magnet pressing mold

Abstract

This utility model relates to the field of magnet manufacturing technology and discloses a circular magnet pressing mold, including a frame, a support frame fixedly connected to the top of the frame, a tubular outer mold set at the top of the frame, first side mounting blocks fixedly connected to the four corners of the tubular outer mold, a core rod set on the inner side of the tubular outer mold, a bearing ring set on the outer side of the core rod, and a second through groove opened at the top of the frame. This utility model, by setting the core rod and the bearing ring, can move up and down under the drive of a third cylinder, and the bearing ring is locked in place at the first through groove, but the core rod continues to descend, thereby effectively placing the pressed magnet on the top of the bearing plate. With the setting of the arc-shaped push plate and the crossbar, the pressed magnet can be effectively pushed, and the setting of the brush can effectively push and clean the residual magnetic powder, eliminating the need for manual cleaning and improving the use effect.

Description

Technical Field

[0001] This utility model relates to the field of magnet manufacturing technology, and in particular to a ring-shaped magnet pressing mold. Background Technology

[0002] Magnet pressing molds are key equipment used in the manufacture of permanent magnets. Their design and process directly affect the performance and production efficiency of the magnets. The ring-shaped magnet pressing mold achieves high-precision forming of ring magnets through an adjustable mandrel and composite mold sleeve structure. The mandrel can be flexibly adapted to different inner diameter specifications without changing the mold. The top design guides the uniform filling of magnetic powder. The mold sleeve is made of a composite of magnetic and non-magnetic materials, which, together with the internal excitation structure, forms a directional magnetic field to ensure consistent magnetic powder orientation. It is suitable for automotive, electronics and other fields. While improving the consistency of magnet performance, it simplifies the operation process, reduces mold replacement costs, and meets the needs of efficient industrial production.

[0003] Traditional molds often use an integral mandrel and fixed mold sleeve structure. After pressing, the ring magnet, mandrel and outer mold are difficult to separate directly due to their tight fit and the adsorption force of the solidified magnetic powder. Manual demolding is required, which is time-consuming and labor-intensive. At the same time, cleaning the mold cavity is tedious and incomplete. During the pressing process, magnetic powder particles are easy to remain in the gaps of the mold cavity, the bottom of the mandrel and other dead corners. Manual brush cleaning or disassembly and rinsing is required, which not only increases downtime, but may also cause impurities to be mixed into the magnetic powder during the next pressing due to incomplete cleaning, affecting the uniformity of product density and dimensional accuracy, and even causing problems such as accelerated mold wear and shortened life.

[0004] Therefore, it is necessary to invent a ring-shaped magnet pressing mold to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a circular magnet pressing mold to solve the problems mentioned in the background art. Traditional molds often use an integral core rod and fixed mold sleeve structure. After pressing, the circular magnet, core rod and outer mold are difficult to separate directly due to their tight fit and the adsorption force of the solidified magnetic powder. Manual demolding is required, which is time-consuming and labor-intensive. At the same time, the mold cavity is cumbersome and incomplete to clean. During the pressing process, magnetic powder particles are easy to remain in the mold cavity gaps, the bottom of the core rod and other dead corners. Manual brush cleaning or disassembly and rinsing is required, which not only increases downtime, but may also cause impurities to be mixed into the magnetic powder during the next pressing due to incomplete cleaning, affecting the density uniformity and dimensional accuracy of the product, and even causing problems such as accelerated mold wear and shortened life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circular magnet pressing mold, comprising a frame, a support frame fixedly connected to the top of the frame, a tubular outer mold provided at the top of the frame, first side mounting blocks fixedly connected to the four corners of the tubular outer mold, a core rod provided on the inner side of the tubular outer mold, a bearing ring provided on the outer side of the core rod, a second through groove opened at the top of the frame, and the bearing ring provided on the inner side of the second through groove;

[0007] A bearing plate is fixedly connected to the middle of the inner side of the frame. A first through groove is opened in the middle of the bearing plate. An arc-shaped push plate is provided at the rear end of the bearing plate. A crossbar is fixedly connected to both sides of the arc-shaped push plate. A rubber pad is provided on the inner side of the arc-shaped push plate. Brush bristles are provided at the bottom ends of the arc-shaped push plate and the crossbar.

[0008] As a preferred embodiment, a fixing block is fixedly connected to the rear end of the bearing plate, and a first cylinder is fixedly connected to the rear end of the fixing block. The output end of the first cylinder is fixedly connected to the rear side of the arc-shaped push plate.

[0009] As a preferred embodiment, both ends of the bottom sidewall of the frame are symmetrically provided with sliding grooves, and a slider is fixedly connected to the side of the crossbar near the inner wall of the frame, and the slider is slidably connected to the inner side of the sliding groove.

[0010] As a preferred embodiment, a base plate is fixedly connected to the bottom of the inner side of the frame, a third cylinder is fixedly connected to the top of the base plate, a fixing plate is fixedly connected to the output end of the third cylinder, a third side mounting block is symmetrically arranged on both sides of the fixing plate, a second side mounting block is symmetrically arranged on both sides of the bottom end of the mandrel, and the third side mounting block and the second side mounting block are arranged correspondingly.

[0011] As a preferred embodiment, a third through groove is provided in the middle of the bearing ring, the mandrel is slidably disposed inside the third through groove, a limiting plate is fixedly connected to the bottom end of the bearing ring, and first limiting side ears are symmetrically fixedly connected to both sides of the limiting plate, the first limiting side ears being correspondingly disposed to the slot.

[0012] As a preferred embodiment, a second cylinder is fixedly connected to the top of the support frame, a connecting plate is fixedly connected to the output end of the second cylinder, and a fixing rod is fixedly connected to both sides of the bottom end of the connecting plate. An annular upper mold is fixedly connected to the bottom end of the fixing rod.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model, by setting a core rod and a support ring, allows both the core rod and the support ring to move up and down under the drive of a third cylinder. The support ring is engaged by a slot when it reaches the first through groove, but the core rod continues to descend, thus effectively placing the pressed magnet at the top of the support plate. With the setting of the arc-shaped push plate and the crossbar, the pressed magnet can be effectively pushed. At the same time, the setting of the brush can effectively push and clean the residual magnetic powder, eliminating the need for manual cleaning and improving the efficiency of use.

[0015] 2. This utility model has sliders fixedly connected to both sides of the crossbar, and a groove is provided on the inner side of the inner wall of the frame. The sliders can be slidably connected to the inner side of the groove, thereby effectively improving the stability of the movement of the crossbar and the arc-shaped push plate. At the same time, the side of the arc-shaped push plate and the first cylinder can push the arc-shaped push plate and the crossbar to move, and quickly help the arc-shaped push plate and the crossbar to reset, which is convenient for completing the subsequent magnet pressing work. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the frame structure in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the core rod in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the bearing plate in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the third cylinder in this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the annular upper mold in this utility model.

[0022] In the picture:

[0023] 1. Frame; 11. Support frame; 12. Bearing plate; 121. First through slot; 122. Slot; 123. Fixing block; 124. First cylinder; 125. Arc-shaped push plate; 126. Rubber pad; 127. Crossbar; 128. Slider; 129. Brush bristles; 13. Base plate; 14. Slide groove; 15. Second through slot;

[0024] 2. Second cylinder; 21. Connecting plate; 22. Fixing rod; 23. Annular upper mold;

[0025] 3. Tubular outer mold; 31. First side mounting block;

[0026] 4. Core rod; 41. Bearing ring; 411. Third through groove; 412. Limiting plate; 413. First limiting side ear; 42. Second side mounting block; 43. Fixing plate; 431. Third side mounting block; 44. Third cylinder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see the appendix Figure 1 - Appendix Figure 6 A circular magnet pressing mold includes a frame 1, a support frame 11 fixedly connected to the top of the frame 1, a tubular outer mold 3 provided at the top of the frame 1, first side mounting blocks 31 fixedly connected to the four corners of the tubular outer mold 3, a core rod 4 provided on the inner side of the tubular outer mold 3, a bearing ring 41 provided on the outer side of the core rod 4, and a second through groove 15 opened at the top of the frame 1, with the bearing ring 41 located on the inner side of the second through groove 15.

[0029] A bearing plate 12 is fixedly connected to the middle of the inner side of the frame 1. A first through groove 121 is opened in the middle of the bearing plate 12. An arc-shaped push plate 125 is provided at the rear end of the bearing plate 12. A crossbar 127 is fixedly connected to both sides of the arc-shaped push plate 125. A rubber pad 126 is provided on the inner side of the arc-shaped push plate 125. Brush bristles 129 are provided at the bottom ends of the arc-shaped push plate 125 and the crossbar 127.

[0030] Specifically, by setting a gap between the tubular outer mold 3 and the core rod 4, it is easy to place the magnetic powder for producing magnets between the tubular outer mold 3 and the core rod 4 for subsequent pressing. The support ring 41 is located at the bottom between the tubular outer mold 3 and the core rod 4, so that the magnet to be pressed will be placed at the top of the support ring 41. After pressing is completed, the core rod 4 and the support ring 41 move downwards, so that the support ring 41 and the limiting plate 412 move to the first through groove 121. The first limiting side ear 413 is engaged with the slot 122. At this time, the height of the support ring 41 is flush with the support plate 12. 4. Continue to descend until the core rod 4 is fully inserted into the third through groove 411 and flush with it. The pressed magnet will be placed at the top of the support ring 41. The arc-shaped push plate 125 can effectively push the magnet to move, making it easy to push the magnet down from the support ring 41 and remove the magnet from the inside of the support plate 12. At the same time, the magnetic powder remaining on the outer wall of the core rod 4 will be scraped off by the third through groove 411 and left on the surface of the support ring 41. The brush bristles 129 at the bottom of the arc-shaped push plate 125 and the crossbar 127 can effectively clean the magnetic powder when moving.

[0031] Please see the appendix Figure 4 A fixing block 123 is fixedly connected to the rear end of the bearing plate 12, and a first cylinder 124 is fixedly connected to the rear end of the fixing block 123. The output end of the first cylinder 124 is fixedly connected to the rear side of the arc-shaped push plate 125.

[0032] Specifically, by setting a fixing block 123, the first cylinder 124 is fixedly connected to the rear end of the fixing block 123, and the output end of the first cylinder 124 is fixedly connected to the arc-shaped push plate 125, so that the first cylinder 124 can drive the arc-shaped push plate 125 to move.

[0033] Please see the appendix Figure 1 and Figure 4 Both ends of the bottom sidewall of the frame 1 are symmetrically provided with sliding grooves 14. A slider 128 is fixedly connected to the side of the crossbar 127 near the inner wall of the frame 1. The slider 128 is slidably connected to the inner side of the sliding groove 14.

[0034] Specifically, by symmetrically opening slide grooves 14 at both ends of the bottom side wall of the frame 1, and fixing a slider 128 to the side of the crossbar 127 near the inner wall of the frame 1, the slider 128 is slidably connected to the inner side of the slide groove 14, so that the arc-shaped push plate 125 and the crossbar 127 move more stably and move stably on the surface of the support plate 12, driving the bristles 129 to perform cleaning work on the surface of the support plate 12.

[0035] Please see the appendix Figure 1 and Figure 5A base plate 13 is fixedly connected to the bottom of the inner side of the frame 1. A third cylinder 44 is fixedly connected to the top of the base plate 13. A fixing plate 43 is fixedly connected to the output end of the third cylinder 44. A third side mounting block 431 is symmetrically arranged on both sides of the fixing plate 43. A second side mounting block 42 is symmetrically arranged on both sides of the bottom end of the mandrel 4. The third side mounting block 431 and the second side mounting block 42 are arranged correspondingly.

[0036] Specifically, a third cylinder 44 is fixedly connected to the top of the base plate 13, and its output end is fixed to the fixing plate 43. The fixing plate 43 and the mandrel 4 are respectively provided with a third side mounting block 431 and a second side mounting block 42, which are correspondingly arranged to facilitate fixing with bolts. Thus, the third cylinder 44 can drive the mandrel 4 to move up and down. The bottom end of the bearing ring 41 is provided with a groove corresponding to the third side mounting block 431 and the second side mounting block 42, so that when the mandrel 4 moves upward, the third side mounting block 431 and the second side mounting block 42 will move to the inside of the groove at the bottom end of the bearing ring 41, thereby dragging the bearing ring 41 to move upward.

[0037] Please see the appendix Figure 3 and Figure 4 The bearing ring 41 has a third through groove 411 in the middle. The core rod 4 is slidably disposed inside the third through groove 411. The bottom end of the bearing ring 41 is fixedly connected to a limiting plate 412. The two sides of the limiting plate 412 are symmetrically fixedly connected to a first limiting side ear 413. The first limiting side ear 413 is correspondingly disposed to the slot 122.

[0038] Specifically, by setting the third through groove 411, the core rod 4 can slide up and down inside the third through groove 411. The bearing ring 41 is correspondingly set with the second through groove 15, and the height of the bearing ring 41 is the same as the depth of the second through groove 15, so that the bearing ring 41 can be completely set inside the second through groove 15. The limiting plate 412 is set at the bottom of the frame 1, and the first limiting side ear 413 is correspondingly set with the slot 122. When the bearing ring 41 and the limiting plate 412 move downward, the limiting plate 412 will be set inside the first through groove 121, and the first limiting side ear 413 will be engaged with the inside of the slot 122, so that the limiting plate 412 and the bearing ring 41 will no longer move. At this time, the core rod 4 will continue to move downward, thereby placing the pressed magnet on the bearing ring 41, which is convenient for subsequent pushing and moving, convenient for collecting the magnet, and convenient for cleaning the magnetic powder remaining on the bearing ring 41.

[0039] Please see the appendix Figure 1 and Figure 6The top of the support frame 11 is fixedly connected to the second cylinder 2, the output end of the second cylinder 2 is fixedly connected to the connecting plate 21, the bottom ends of the connecting plate 21 are fixedly connected to both sides of the bottom end of the connecting plate 21, and the bottom end of the fixed rod 22 is fixedly connected to the annular upper mold 23.

[0040] Specifically, by setting a second cylinder 2, which is fixed to the top of the support frame 11, and the output end of the second cylinder 2 is fixedly connected to the connecting plate 21, the second cylinder 2 can drive the connecting plate 21 to move up and down. Two fixing rods 22 are symmetrically fixedly connected to the bottom end of the connecting plate 21. The bottom end of the fixing rods 22 is fixedly connected to the annular upper mold 23, so the second cylinder 2 can drive the annular upper mold 23 to move up and down. The length of the fixing rods 22 is longer than the height of the core rod 4, and the size of the annular upper mold 23 is the same as the gap size between the tubular outer mold 3 and the core rod 4. Thus, the second cylinder 2 can drive the annular upper mold 23 to move downward along the gap between the tubular outer mold 3 and the core rod 4, thereby effectively completing the pressing work of the magnet.

[0041] The working principle of this utility model is as follows: When in use, an appropriate amount of magnetic powder is poured into the gap between the tubular outer mold 3 and the core rod 4. The second cylinder 2 is started, and the second cylinder 2 can drive the annular upper mold 23 to move downward along the gap between the tubular outer mold 3 and the core rod 4. The annular upper mold 23 is moved up and down multiple times, thereby effectively completing the pressing work of the magnet.

[0042] The pressed magnet will be located at the top of the support ring 41. At this time, the third cylinder 44 is activated to move the core rod 4 downward. The support ring 41 and the limiting plate 412 will move downward along with the core rod 4. When the support ring 41 and the limiting plate 412 reach the slot 122, the first limiting side ear 413 will lock into the slot 122. At this time, the height of the support ring 41 is flush with the support plate 12. The third cylinder 44 continues to move the core rod 4 downward until the core rod 4 is fully inserted into the third through slot 411 and flush with the third through slot 411. The third cylinder 44 then stops. The pressed magnet is placed at the top of the support ring 41. The first cylinder 124 is activated, which drives the arc-shaped push plate 125 and the crossbar 127 to move. The arc-shaped push plate 125 can effectively push the magnet to move, making it easy to push the magnet off the support ring 41 and remove the magnet from the inside of the support plate 12. At the same time, the magnetic powder remaining on the outer wall of the core rod 4 will be scraped off by the third through groove 411 and left on the surface of the support ring 41. The brush bristles 129 at the bottom of the arc-shaped push plate 125 and the crossbar 127 can effectively clean the magnetic powder when moving.

[0043] After completing one round of magnetic pressing of the component, the third cylinder 44 is started to drive the mandrel 4 to move upward. During the upward movement of the mandrel 4, the bearing ring 41 and the limiting plate 412 are driven to move upward, so that the mandrel 4 is finally set inside the tubular outer mold 3, achieving the initial shape, which is convenient for completing the subsequent pressing work.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A toroidal magnet pressing die, comprising a rack (1), a support frame (11) is fixedly connected to the top end of the rack (1), characterized in that: The top of the frame (1) is provided with a tubular outer mold (3), and the four corners of the tubular outer mold (3) are fixedly connected with first side mounting blocks (31). The inner side of the tubular outer mold (3) is provided with a core rod (4), and the outer side of the core rod (4) is provided with a bearing ring (41). The top of the frame (1) is provided with a second through groove (15), and the bearing ring (41) is located on the inner side of the second through groove (15). A bearing plate (12) is fixedly connected to the middle of the inner side of the frame (1). A first through groove (121) is opened in the middle of the bearing plate (12). An arc-shaped push plate (125) is provided at the rear end of the bearing plate (12). A crossbar (127) is fixedly connected to both sides of the arc-shaped push plate (125). A rubber pad (126) is provided on the inner side of the arc-shaped push plate (125). Brush bristles (129) are provided at the bottom ends of the arc-shaped push plate (125) and the crossbar (127).

2. The circular magnet pressing mold according to claim 1, characterized in that: The rear end of the bearing plate (12) is fixedly connected to a fixing block (123), and the rear end of the fixing block (123) is fixedly connected to a first cylinder (124). The output end of the first cylinder (124) is fixedly connected to the rear side of the arc-shaped push plate (125).

3. The circular magnet pressing mold according to claim 2, characterized in that: The bottom sidewall of the frame (1) is symmetrically provided with sliding grooves (14) at both ends. The crossbar (127) is fixedly connected to a slider (128) on the side near the inner wall of the frame (1). The slider (128) is slidably connected to the inner side of the sliding groove (14).

4. The circular magnet pressing mold according to claim 3, characterized in that: A base plate (13) is fixedly connected to the bottom of the inner side of the frame (1), and a third cylinder (44) is fixedly connected to the top of the base plate (13). A fixing plate (43) is fixedly connected to the output end of the third cylinder (44). A third side mounting block (431) is symmetrically arranged on both sides of the fixing plate (43). A second side mounting block (42) is symmetrically arranged on both sides of the bottom end of the mandrel (4). The third side mounting block (431) and the second side mounting block (42) are arranged correspondingly.

5. A circular magnet pressing mold according to claim 4, characterized in that: The bearing ring (41) has a third through groove (411) in the middle. The core rod (4) is slidably disposed inside the third through groove (411). The bottom end of the bearing ring (41) is fixedly connected to a limiting plate (412). The two sides of the limiting plate (412) are symmetrically fixedly connected to first limiting side ears (413). The first limiting side ears (413) are correspondingly disposed to the slot (122).

6. A circular magnet pressing mold according to claim 5, characterized in that: The top of the support frame (11) is fixedly connected to a second cylinder (2), the output end of the second cylinder (2) is fixedly connected to a connecting plate (21), both sides of the bottom end of the connecting plate (21) are fixedly connected to a fixing rod (22), and the bottom end of the fixing rod (22) is fixedly connected to an annular upper mold (23).

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