A forming die for forming fan-shaped magnets

Abstract

This utility model discloses a forming mold for forming fan-shaped magnets, including a lower mold and an upper mold. A movable push plate is provided inside the lower mold, which moves upwards with the upper mold. A pressing screw is provided at the top of the upper mold to press against it. Compared with the prior art, the beneficial effects of this utility model are that, through an adjustable pressing structure, it effectively solves the problems of fixed pressing points and uneven pressure on magnetic powder in traditional molds. This allows workers to precisely adjust the pressing points and pressure according to the distribution of magnetic powder in the lower mold, ensuring uniform pressure on the magnetic powder. This significantly improves the density consistency and structural stability of the formed fan-shaped magnets, ensuring product quality. Furthermore, it facilitates automated unloading, eliminating the need for manual material handling, thus avoiding damage to the magnets caused by manual operation and significantly shortening the unloading time, thereby significantly improving overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically a molding die for molding fan-shaped magnets. Background Technology

[0002] Neodymium magnets, also known as neodymium iron boron magnets, are tetragonal crystals formed by neodymium, iron, and boron. Currently, the powder method for preparing sintered neodymium iron boron magnets usually involves processing all products into cuboids. This is achieved using existing molding dies for preparing neodymium iron boron blanks, which include left and right side plates and front and rear side plates. The left and right side plates and the front and rear side plates are combined to form a cuboid cavity.

[0003] In the application document for a forming mold for irregularly shaped magnets with application number 202222656823.2, when it is necessary to die-cast irregularly shaped magnets, two side plates are installed on the top of the bottom plate through sliding connection of sliders and grooves. Then, the top plate is placed on the top of the side plates to form a cavity. After the cavity is formed, magnetic powder is placed in the inner cavity of the cavity, and the first template and the second template are slidably installed in the inner cavity of the cavity. The first template and the second template are moved relative to each other by a stamping machine. Then, the irregular surface opened on one side of the first template and the irregular block opened on one side of the second template cooperate to directly stamp the magnetic powder into an irregular shape. This achieves the purpose of directly stamping magnetic powder into irregularly shaped magnets without the need for wire cutting and grinding to process into the irregular shape required by the customer, while avoiding the waste of time and materials.

[0004] While the aforementioned applications meet the user's needs to a certain extent, certain defects still exist during use. Specific problems are as follows: relying on a fixed structure to apply pressure to the upper mold only allows for pressing at a single location, making it impossible to adjust the pressing point according to the distribution of magnetic powder within the mold. This easily leads to uneven pressure on the magnetic powder, resulting in inconsistent density and poor structural stability of the formed fan-shaped magnets, affecting product quality. Secondly, in the unloading process, the formed fan-shaped magnets often need to be manually removed from the lower mold. This not only involves a cumbersome operation process and increases the labor intensity of workers, but also may cause damage or deformation of the magnet edges due to improper manual force control, reducing the product qualification rate. Based on these issues, this utility model designs a forming mold for forming fan-shaped magnets to solve the above problems. Utility Model Content

[0005] This invention provides a forming mold for forming fan-shaped magnets, which can effectively solve the problems mentioned in the background art, such as relying on a fixed structure to apply pressure to the upper mold, which can only achieve pressing at a single position and cannot adjust the pressing point according to the distribution of magnetic powder in the mold, easily leading to uneven pressure on the magnetic powder, resulting in inconsistent density and poor structural stability of the formed fan-shaped magnets, affecting product quality. Secondly, in the unloading process, the formed fan-shaped magnets often need to be manually removed from the lower mold, which is not only cumbersome and increases the labor intensity of workers, but may also cause damage and deformation of the magnet edges and corners due to improper control of the manual operation force, reducing the product qualification rate.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a forming mold for forming fan-shaped magnets, comprising a lower mold and an upper mold, wherein a movable push plate is provided inside the lower mold, the push plate moves as the upper mold moves upward, and a pressing screw is provided on the top of the upper mold to press the upper mold.

[0007] A forming mold for forming fan-shaped magnets, preferably, has a gear rotatably connected to one end of the lower mold, a one-way bearing fixedly installed inside the gear, a push screw threadedly connected inside the one-way bearing, a push block fixedly connected to one end of the push screw, a movable plate slidably connected inside the lower mold, a roller rotatably connected to one end of the movable plate, a push plate fixedly installed on the top of the movable plate, and a toothed rod installed at one end of the upper mold by screws.

[0008] A forming mold for forming sector-shaped magnets, preferably wherein the rack is meshed with a gear.

[0009] A forming mold for forming fan-shaped magnets, preferably, the lower mold has a limiting groove at the position corresponding to the push block, and the outer side of the push block is in contact with the inner wall of the limiting groove.

[0010] A forming mold for forming fan-shaped magnets, preferably, the end of the push block is provided with an inclined angle, and the outer side of the roller is in contact with the end of the push block.

[0011] A forming mold for forming fan-shaped magnets, preferably, has a receiving groove at one end of the lower mold, a moving rod slidably connected inside the receiving groove, an mounting plate mounted on one end of the moving rod by screws, a slider slidably connected to the top of the mounting plate, a pressing screw threadedly connected inside the slider, and a pressing plate fixedly connected to the bottom of the pressing screw.

[0012] A forming mold for forming fan-shaped magnets, preferably, the mounting plate has a cross groove corresponding to the slider, and the slider is slidably connected inside the cross groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The structure of this utility model is scientific and reasonable, and it is safe and convenient to use. Through the adjustable pressing structure, the problems of fixed pressing points and uneven pressure on magnetic powder in traditional molds are effectively solved. This allows the staff to accurately adjust the pressing points and pressing pressure according to the distribution of magnetic powder in the lower mold, ensuring that the magnetic powder is evenly pressed. This significantly improves the density consistency and structural stability of the fan-shaped magnet after molding, and ensures product quality. When the upper mold moves downward to press the magnetic powder, the rack and gear mesh, causing the gear to rotate. However, due to the characteristics of the one-way bearing, the rotation of the gear does not drive the push screw to move. When the upper mold returns to its original position, the rack drives the gear to rotate in the opposite direction. At this time, the one-way bearing drives the push screw to rotate synchronously. Under the action of the thread, the push screw drives the push block to move stably along the limiting groove. The push block contacts the roller through the end tilt angle, pushing the moving plate and the top push plate to move upward, pushing out the fan-shaped magnet formed in the lower mold, realizing automated unloading. This process does not require manual material handling, which avoids damage to the magnet caused by manual operation, greatly shortens the unloading time, and significantly improves the overall production efficiency. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the mounting structure of the push screw of this utility model; Figure 3 This is a schematic diagram of the push plate mounting structure of this utility model; Figure 4 This is a schematic diagram of the extrusion plate installation structure of this utility model; The following are the labels in the diagram: 1. Lower mold; 2. Upper mold; 3. One-way bearing; 4. Gear; 5. Push screw; 6. Push block; 7. Moving plate; 8. Roller; 9. Push plate; 10. Gear rack; 11. Moving rod; 12. Mounting plate; 13. Slider; 14. Extrusion screw; 15. Extrusion plate; 16. Storage groove. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] Example: Figure 1-4As shown, this utility model provides a technical solution: a forming mold for forming fan-shaped magnets, including a lower mold 1 and an upper mold 2. A gear 4 is rotatably connected to one end of the lower mold 1. A one-way bearing 3 is fixedly installed inside the gear 4. A push screw 5 is threadedly connected inside the one-way bearing 3. A push block 6 is fixedly connected to one end of the push screw 5. A movable plate 7 is slidably connected inside the lower mold 1. A roller 8 is rotatably connected to one end of the movable plate 7. A push plate 9 is fixedly installed on the top of the movable plate 7. A toothed rod 10 is installed at one end of the upper mold 2 by screws.

[0018] The rack 10 meshes with the gear 4, which facilitates the rotation of the gear 4, thereby driving the screw 5 to rotate.

[0019] A limiting groove is provided at the position of the lower mold 1 corresponding to the push block 6. The outer side of the push block 6 is in contact with the inner wall of the limiting groove to ensure the stability of the push block 6 movement and avoid the problem of rotation when the push block 6 moves.

[0020] The end of the push block 6 is provided with an inclined angle, and the outer side of the roller 8 is in contact with the end of the push block 6, which facilitates the movement of the moving plate 7 and realizes the movement of the push plate 9.

[0021] The lower mold 1 has a storage groove 16 at one end. A moving rod 11 is slidably connected inside the storage groove 16. A mounting plate 12 is installed at one end of the moving rod 11 by screws. A slider 13 is slidably connected to the top of the mounting plate 12. A pressing screw 14 is threadedly connected inside the slider 13. A pressing plate 15 is fixedly connected to the bottom of the pressing screw 14.

[0022] The mounting plate 12 has a cross groove corresponding to the slider 13. The slider 13 is slidably connected inside the cross groove to ensure the stability of the slider 13's movement and prevent the slider 13 from falling off during movement.

[0023] After placing the magnetic powder inside the lower mold 1, the operator moves the upper mold 2 to the top of the lower mold 1. The operator then moves the mounting plate 12, causing the moving rod 11 to move inside the receiving groove 16, thus moving the extrusion plate 15 inside the upper mold 2. The operator then rotates the extrusion screw 14, which is threadedly connected to the slider 13, causing the extrusion plate 15 to move and pushing the upper mold 2 to move. The upper mold 2 presses the magnetic powder inside the lower mold 1, thus forming the magnetic powder. The movement of the slider 13 allows for pressing the upper mold 2 at different positions, facilitating the formation of the magnetic powder. When the forming mold is not in use, the operator can move the moving rod 11 inside the receiving groove 16, reducing the space occupied by the forming mold.

[0024] During the micro-powder forming process, the upper mold 2 moves downward, driving the rack 10 to move. The rack 10 meshes with the gear 4, causing the gear 4 to rotate. At this time, due to the use of the one-way bearing 3, the rotation of the gear 4 does not drive the push screw 5 to move. When the upper mold 2 moves upward, it drives the gear 4 to move upward, causing the gear 4 to rotate. The rotation of the gear 4 drives the one-way bearing 3 to rotate. The one-way bearing 3 is threadedly connected to the push screw 5, causing the push screw 5 to move. The movement of the push screw 5 drives the push block 6 to move. The push block 6 gradually moves to the bottom of the moving plate 7 and pushes the push plate 9 to move, pushing the formed item inside the lower mold 1 to move, realizing rapid unloading after micro-powder forming, thereby improving the micro-powder forming efficiency.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A forming die for forming a sector-shaped magnetic steel, comprising a lower die (1) and an upper die (2), characterized in that: The lower mold (1) is provided with a movable push plate (9), which moves as the upper mold (2) moves upward. The top of the upper mold (2) is provided with a pressing screw (14) that presses the upper mold (2).

2. The forming die for forming a sector-shaped magnetic steel according to claim 1, wherein The lower mold (1) is rotatably connected to a gear (4) at one end. A one-way bearing (3) is fixedly installed inside the gear (4). A push screw (5) is threadedly connected inside the one-way bearing (3). A push block (6) is fixedly connected to one end of the push screw (5). A moving plate (7) is slidably connected inside the lower mold (1). A roller (8) is rotatably connected to one end of the moving plate (7). A push plate (9) is fixedly installed on the top of the moving plate (7). A toothed rod (10) is installed at one end of the upper mold (2) by a screw.

3. The forming die for forming a sector-shaped magnetic steel according to claim 2, wherein The rack (10) meshes with the gear (4).

4. The forming die for forming a sector-shaped magnetic steel according to claim 2, wherein The lower mold (1) has a limiting groove at the position corresponding to the push block (6), and the outer side of the push block (6) is in contact with the inner wall of the limiting groove.

5. The forming die for forming a sector-shaped magnetic steel according to claim 2, wherein The end of the push block (6) is provided with an inclination angle, and the outer side of the roller (8) is in contact with the end of the push block (6).

6. The forming die for forming a sector-shaped magnetic steel according to claim 1, wherein The lower mold (1) has a storage groove (16) at one end. A moving rod (11) is slidably connected inside the storage groove (16). A mounting plate (12) is installed at one end of the moving rod (11) by screws. A slider (13) is slidably connected to the top of the mounting plate (12). A pressing screw (14) is threaded inside the slider (13). A pressing plate (15) is fixedly connected to the bottom of the pressing screw (14).

7. The forming die for forming a sector-shaped magnetic steel according to claim 6, wherein The mounting plate (12) has a cross groove corresponding to the slider (13), and the slider (13) is slidably connected inside the cross groove.

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