Automatic press forming device for neodymium-iron-boron magnet

Abstract

The application relates to the technical field of neodymium-iron-boron magnets, and particularly discloses an automatic pressing forming device for a neodymium-iron-boron magnet, which comprises the following parts: a supporting leg is arranged on the lower side of a base, and a mounting frame is arranged on the upper side of the base; a connecting plate is arranged on the outer side of the supporting leg, and a lower die is closely combined with the base. The automatic pressing forming device for the neodymium-iron-boron magnet is characterized in that the second hydraulic rod drives the arc-shaped block to descend and abut against the ground, the movable wheels can be conveniently telescoped and moved; the rotating handle drives the screw rod to rotate, the connecting plate is driven to ascend and descend along the limiting slide rod, the array movable wheels are synchronously contacted with the ground to lift up the whole device, the supporting leg is separated from the ground, and then the device is moved; the first double-output shaft motor synchronously drives the rotation of the left and right first threaded rods through the connecting rods, the first double-output shaft motor synchronously drives the rotation of the left and right first threaded rods through the connecting rods, the lower die is automatically clamped in the front, rear, left and right directions, and the four clamping parts realize accurate centering and fixing.

Description

Technical Field

[0001] This invention relates to the field of neodymium iron boron magnet technology, specifically to an automatic pressing and molding device for neodymium iron boron magnets. Background Technology

[0002] Neodymium iron boron (NdFeB) magnets, also known as neodymium iron boron permanent magnets, are currently the world's most powerful commercially available permanent magnets, often referred to as the "King of Magnets." They are tetragonal crystals composed of the rare-earth elements neodymium, iron, and boron. This material possesses extremely high magnetic energy product, high remanence, and high coercivity, capable of attracting objects up to 640 times its own weight. Its magnetism stems from its unique crystal structure, which allows magnetic domains to align with a highly uniform orientation after magnetization, generating a magnetic force far exceeding that of traditional ferrites or AlNiCo. It does not rely on electric current or consume energy, operates stably at room temperature, and exhibits minimal magnetic attenuation within a temperature range of -40°C to 80°C.

[0003] For example, Chinese patent CN210450974U discloses a pressing and molding machine for neodymium iron boron magnets. The device has a simple structure and reasonable design. The device is highly mobile and saves time and effort compared to manual handling. At the same time, it can tighten the lower mold, which improves the accuracy of pressing and molding. In addition, the device can automatically demold, which improves work efficiency.

[0004] However, in the process of using existing molding machines, operators need to simultaneously perform alignment and fixation actions during the mold lifting and displacement process. The operating space is limited, which increases the workload and poses certain safety hazards. In addition, manual operation is still required to clamp the lower mold, which is cumbersome and time-consuming. It is also easy for the molding accuracy to be affected by improper manual clamping. Therefore, there is still room for further improvement.

[0005] Therefore, we propose an automated pressing and molding device for neodymium iron boron magnets to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic pressing and molding device for neodymium iron boron magnets, which solves the problems mentioned in the background art. In the process of using the molding machine, the operator needs to simultaneously take care of the alignment and fixing actions during the mold lifting and displacement process. The operating space is limited, which increases the workload and poses certain operational safety hazards. In addition, manual operation is still required to clamp the lower mold, which is cumbersome and time-consuming. It is also easy to affect the molding accuracy due to improper manual clamping. Therefore, there is still room for further improvement.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic pressing and molding device for neodymium iron boron magnets, comprising: A base, wherein a support leg is provided on the lower side of the base and a mounting bracket is provided on the upper side of the base; Also includes: The outer side of the support leg is equipped with a lifting mechanism for easy movement, and a connecting plate is also provided on the outer side of the support leg; furthermore, a support mechanism for easy lifting is provided on the lower side of the base. The base is provided with a limiting mechanism on the inner side to facilitate clamping the lower mold, and the lower mold is tightly fitted to the base.

[0008] Preferably, a first hydraulic rod is provided on the lower side of the mounting frame, and an upper mold is provided on the lower side of the first hydraulic rod, and a controller is provided on the right side of the mounting frame.

[0009] Preferably, the lifting mechanism is composed of a connecting plate, a lead screw, and movable wheels. The connecting plate is slidably connected to the limiting slide rod, and the limiting slide rod is distributed in an array. The connecting plate is threadedly connected to the lead screw, and movable wheels are provided on the lower side of the connecting plate, and the movable wheels are distributed in an array.

[0010] Preferably, the lead screw is rotatably connected to the support plate, and the upper side of the lead screw is fixedly connected to the handle, and the support plate is fixedly connected to the support leg.

[0011] Preferably, the support mechanism is composed of a second hydraulic rod and an arc-shaped block. The second hydraulic rod is disposed on the lower side of the base and is distributed in an array. The output end of the second hydraulic rod is fixedly connected to the arc-shaped block.

[0012] Preferably, a first dual-output shaft motor is provided on the front side of the base, and the output shaft of the first dual-output shaft motor is fixedly connected to the connecting rod, the connecting rod is rotatably connected to the support block, and the support block is fixedly connected to the base.

[0013] Preferably, the connecting rod is fixedly connected to the first threaded rod, and the first threaded rod is threadedly driven to the connecting block, and the connecting block is fixedly connected to the L-shaped rod, and the L-shaped rod is fixedly connected to the first clamping plate.

[0014] Preferably, the limiting mechanism is composed of a first clamping plate, a first limiting rod, a slot, and a second clamping plate. The first clamping plate is fixedly connected to the first limiting rod, and both the first limiting rod and the L-shaped rod are slidably connected to the base. The base has a slot inside, and the slot is slidably connected to the second clamping plate.

[0015] Preferably, the first clamping plate is symmetrical about the vertical central axis of the base, and the second clamping plate is symmetrical about the vertical central axis of the base. The first clamping plate and the L-shaped rod correspond one-to-one with the first limiting rod, and the slot and the second clamping plate correspond one-to-one. The sides of the first clamping plate and the second clamping plate are in close contact with the lower mold.

[0016] Preferably, the second clamping plate is threadedly connected to the second threaded rod, and the second threaded rod is fixedly connected to the output shaft of the second dual-output motor. The second dual-output motor is located on the lower side of the base, and the second threaded rod is symmetrical about the vertical central axis of the second dual-output motor. The second threaded rod is rotatably connected to the vertical plate, and the vertical plate is located on the lower side of the base. The vertical plate is fixedly connected to the second limiting rod, and the second limiting rod is slidably connected to the second clamping plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The neodymium iron boron magnet uses an automatic pressing and forming device, and the second hydraulic rod drives the arc-shaped block to move downward and press against the ground, which facilitates the extension and retraction of the moving wheels and facilitates movement; rotating the handle drives the lead screw to rotate, which drives the connecting plate to rise and fall along the limit slide bar, so that the array moving wheels synchronously contact the ground and lift the entire device, and the outriggers are lifted off the ground, thereby moving; the first dual output shaft motor synchronously drives the left and right first threaded rods to rotate through the connecting rod, and the first dual output shaft motor synchronously drives the left and right first threaded rods to rotate through the connecting rod, which automatically clamps the lower mold from the front, back, left and right directions, and the four-sided clamping achieves precise centering and fixing; 1. Equipped with a connecting plate, lead screw, and moving wheels, rotating the handle drives the lead screw to rotate, which in turn drives the connecting plate to rise and fall along the limit slide bar, so that the array moving wheels synchronously contact the ground, lifting the entire equipment and removing the outriggers from the ground. The equipment can be moved flexibly, solving the problem of difficult handling of large pressing equipment. 2. Equipped with a second hydraulic rod and an arc-shaped block, the arrayed second hydraulic rod drives the arc-shaped block downward to press against the ground, facilitating the extension and retraction of the moving wheels, thereby facilitating movement; 3. It is equipped with a first dual-output shaft motor, a first threaded rod and a first clamping plate. The first dual-output shaft motor drives the two first threaded rods on the left and right to rotate synchronously through the connecting rod, which drives the connecting blocks on both sides, the L-shaped rod and the first clamping plate to move synchronously to center and automatically clamp the lower mold from the left and right directions without the need for manual alignment. 4. It is equipped with a second dual-output motor, a second threaded rod, and a second clamping plate. The second dual-output motor synchronously drives the front and rear second threaded rods to rotate, which in turn drives the front and rear second clamping plates to move synchronously along the second limit rod to center and automatically clamp the lower mold from the front and rear direction. The four-sided clamping achieves precise centering and fixing. 5. It is equipped with a first limit rod, a slot, and a controller. The first limit rod ensures that the first clamping plate moves linearly without deviation, the slot provides a sliding guide for the second clamping plate, and the controller on the right side of the mounting frame centrally controls the actions of each motor and hydraulic rod to realize an automated pressing and molding process, improving operational safety and molding consistency. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a first-view structural diagram of the entire invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle; Figure 3 This is a schematic diagram of the overall structure of the present invention from a second perspective. Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B; Figure 5 This is a front view structural diagram of the present invention; Figure 6 This is a schematic diagram of the connection structure of the base, the first clamping plate, and the second clamping plate of the present invention; Figure 7 This is a cross-sectional view of the base structure of the present invention.

[0019] In the diagram: 1. Base; 2. Support leg; 3. Mounting bracket; 4. First hydraulic rod; 5. Upper mold; 6. Controller; 7. Limiting slide bar; 8. Connecting plate; 9. Support plate; 10. Lead screw; 11. Rotary handle; 12. Second hydraulic rod; 13. Arc block; 14. First dual-output shaft motor; 15. Connecting rod; 16. Support block; 17. First threaded rod; 18. Connecting block; 19. L-shaped rod; 20. First clamping plate; 21. First limiting rod; 22. Slot; 23. Second clamping plate; 24. Second threaded rod; 25. Second dual-output motor; 26. Vertical plate; 27. Second limiting rod; 28. Moving wheel; 29. ​​Lower mold. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Please see Figures 1-7This invention provides a technical solution: an automatic pressing and molding device for neodymium iron boron magnets, comprising: a base 1, support legs 2, mounting bracket 3, a first hydraulic rod 4, an upper mold 5, a controller 6, a limiting slide rod 7, a connecting plate 8, a support plate 9, a lead screw 10, a rotating handle 11, a second hydraulic rod 12, an arc-shaped block 13, a first dual-output shaft motor 14, a connecting rod 15, a support block 16, a first threaded rod 17, a connecting block 18, an L-shaped rod 19, a first clamping plate 20, a first limiting rod 21, a slot 22, a second clamping plate 23, a second threaded rod 24, a second dual-output motor 25, a vertical plate 26, a second limiting rod 27, a moving wheel 28, and a lower mold 29.

[0022] In the process of using existing molding machines, operators need to simultaneously perform alignment and fixation actions during the mold lifting and displacement process. The limited operating space increases the workload and poses certain safety hazards. In addition, manual operation is still required to clamp the lower mold, which is cumbersome and time-consuming. It is also easy for the molding accuracy to be affected by improper manual clamping. Therefore, there is still room for further improvement.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, before using the automatic pressing and forming device for neodymium iron boron magnets, the equipment should first be moved to the working position. When relocation is required, first activate the multiple second hydraulic rods 12 arranged in an array on the lower side of the base 1. The output end of the second hydraulic rod 12 extends downward, driving the lower fixed arc block 13 downward to press against the ground. Multiple sets of arc blocks 13 apply downward pressure simultaneously, relying on the ground reaction force to lift the entire equipment upward, so that the lower end of the support leg 2 is completely lifted off the ground, making room for the extension and retraction of the moving wheel 28.

[0024] After the equipment is lifted, the operator rotates the handle 11 on the outer support plate 9 of the outrigger 2. The support plate 9 is fixed to the outside of the outrigger 2. A lead screw 10 is rotatably installed on the support plate 9, with its upper end fixedly connected to the handle 11. The lead screw 10 is threadedly connected to the connecting plate 8, which is simultaneously slidably connected to multiple arrayed limiting slide rods 7. The limiting slide rods 7 are vertically fixed to the outside of the outrigger 2. Multiple moving wheels 28 are arrayed on the lower side of the connecting plate 8. Rotating the handle 11 causes the lead screw 10 to rotate on the support plate 9. When the lead screw 10 rotates, it drives the connecting plate 8 to slide downwards along the limiting slide rods 7 through threaded transmission. The moving wheels 28 on the lower side of the connecting plate 8 descend synchronously and contact the ground. Then, the second hydraulic rod 12 is retracted, causing the arc block 13 to move upwards and reset. At this time, the equipment is completely supported by multiple moving wheels 28, and the operator can easily push the equipment to move and reposition within the workshop, solving the problem of difficult handling of large pressing equipment.

[0025] After the equipment moves to the target workstation, the second hydraulic rod 12 is activated again, driving the arc block 13 downward to lift the equipment, so that the moving wheel 28 is temporarily unloaded; the handle 11 is rotated in the opposite direction, driving the lead screw 10 to reverse, driving the connecting plate 8 to rise along the limit slide bar 7, and the moving wheel 28 is retracted together with the connecting plate 8; then the second hydraulic rod 12 is controlled to slowly retract, the entire equipment descends, the outrigger 2 re-contacts the ground to bear the full weight of the equipment, and the equipment enters a stable working state. The retracted moving wheel 28 does not affect the support stability of the equipment during operation.

[0026] like Figure 1 , Figure 6 , Figure 7 As shown, the lower mold 29 filled with NdFeB magnetic powder is placed at the center of the upper surface of the base 1, and the automatic clamping and limiting mechanism is activated. First, the first dual-output shaft motor 14 on the front side of the base 1 is activated. The left and right output shafts of the first dual-output shaft motor 14 are fixedly connected to the connecting rod 15 respectively. The connecting rod 15 is rotatably supported on the base 1 through the support block 16, which provides rotational support for the connecting rod 15. The outer end of the connecting rod 15 is fixedly connected to the first threaded rod 17. The first threaded rod 17 is threadedly driven to the connecting block 18. An L-shaped rod 19 is fixed on the upper side of the connecting block 18. The upper end of the L-shaped rod 19 passes through the base 1 and is fixedly connected to the first clamping plate 20. The first limiting rod 21 is fixed on the inner side of the first clamping plate 20 and is slidably connected to the base 1.

[0027] When the first dual-output shaft motor 14 rotates in the forward direction, the output shafts on the left and right sides synchronously drive the connecting rod 15 and the first threaded rod 17 to rotate. The threads of the two first threaded rods 17 on the left and right sides rotate in opposite directions. When rotating, they drive the connecting blocks 18 on both sides to move synchronously towards the center of the base. The connecting blocks 18 drive the L-shaped rod 19 and the first clamping plate 20 to slide synchronously towards the center. The two first clamping plates 20 on the left and right sides are symmetrically arranged about the vertical central axis of the base 1. They move synchronously from the left and right sides towards the center. The first limiting rod 21 slides together with the first clamping plate 20 to ensure that the first clamping plate 20 does not deviate along the straight line until the inner side surfaces of the left and right first clamping plates 20 are tightly attached to the left and right side walls of the lower mold 29, thus completing the automatic centering and clamping in the left and right directions.

[0028] Next, the second dual-output motor 25 on the lower side of the base 1 is started. The front and rear output shafts of the second dual-output motor 25 are fixedly connected to the second threaded rod 24 respectively. The outer end of the second threaded rod 24 is rotatably connected to the vertical plate 26. The vertical plate 26 is fixed on the lower side of the base 1. The second limiting rod 27 is fixedly connected between the vertical plates 26. The second clamping plate 23 is simultaneously threaded to the second threaded rod 24 and slidably connected to the second limiting rod 27. The upper end of the second clamping plate 23 extends upward through the slot 22 opened inside the base 1. When the second dual-output motor 25 is running in the forward direction, the two second threaded rods 24 rotate synchronously. The threads of the two second threaded rods 24 rotate in opposite directions, driving the two second clamping plates 23 to slide synchronously towards the center along the second limit rod 27. The slot 22 provides sliding guidance for the second clamping plates 23. The two second clamping plates 23 are arranged symmetrically about the vertical central axis of the base 1, and move synchronously from the front and rear sides towards the center until the inner side of the second clamping plate 23 is tightly attached to the front and rear side walls of the lower mold 29, completing the automatic centering and clamping in the front and rear directions.

[0029] The left and right first clamping plates 20 and the front and rear second clamping plates 23 clamp the lower mold 29 from four directions simultaneously, achieving precise centering and fixing on all four sides. This eliminates the need for operators to manually align and clamp, reducing the workload and avoiding the problem of inadequate manual clamping affecting molding accuracy. At the same time, operators do not need to reach into the pressing area, eliminating operational safety hazards.

[0030] like Figure 1 , Figure 5 As shown, after the lower mold 29 is clamped and fixed, the pressing and forming program is started by the controller 6 on the right side of the mounting frame 3. The first hydraulic rod 4 on the lower side of the mounting frame 3 extends downward, driving the upper mold 5 at the lower end to move downward. The upper mold 5 and the lower mold 29 fixed below precisely cooperate to apply high pressure to the neodymium iron boron magnetic powder in the mold cavity, completing the magnet pressing and forming. After pressing is completed, the first hydraulic rod 4 drives the upper mold 5 to move upward and reset, controlling the first dual-output shaft motor 14 and the second dual-output motor 25 to rotate in opposite directions, driving the first clamping plate 20 and the second clamping plate 23 to release outward synchronously, so that the formed lower mold 29 can be taken out for the next pressing operation.

[0031] It should be noted that elastic rubber buffer pads are bonded to the inner clamping sides of the left and right first clamping plates 20 and the front and rear second clamping plates 23 facing the mold. The buffer pads are soft and have a lower hardness than the substrate of the lower mold 29. During clamping operations, the buffer pads directly adhere to the outer wall of the lower mold 29, avoiding direct rigid compression of the mold edges by the metal sheet. This effectively prevents damage such as indentations, chipping, and cracking on the side wall of the lower mold 29, protects the integrity of the mold, and extends the service life of the mold. In addition, the model of the controller 6 is VT-HNC100.

[0032] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0033] Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. An automatic pressing and molding device for neodymium iron boron magnets, comprising: The base (1) has a support leg (2) on its lower side and a mounting bracket (3) on its upper side. Its characteristic is that it further includes: The outer side of the support leg (2) is provided with a lifting mechanism for easy movement, and the outer side of the support leg (2) is provided with a connecting plate (8); and the lower side of the base (1) is provided with a support mechanism for easy lifting. The base (1) is provided with a limiting mechanism on the inner side to facilitate clamping the lower mold (29), and the lower mold (29) is in close contact with the base (1).

2. The automatic pressing and forming device for neodymium iron boron magnets according to claim 1, characterized in that: The mounting bracket (3) has a first hydraulic rod (4) on its lower side, and an upper mold (5) is provided on the lower side of the first hydraulic rod (4), and a controller (6) is provided on the right side of the mounting bracket (3).

3. The automatic pressing and forming device for neodymium iron boron magnets according to claim 1, characterized in that: The lifting mechanism is composed of a connecting plate (8), a lead screw (10) and a moving wheel (28). The connecting plate (8) is slidably connected to the limiting slide rod (7), and the limiting slide rod (7) is distributed in an array. The connecting plate (8) is threadedly connected to the lead screw (10), and the lower side of the connecting plate (8) is provided with a moving wheel (28), which is distributed in an array.

4. The automatic pressing and forming device for neodymium iron boron magnets according to claim 3, characterized in that: The lead screw (10) is rotatably connected to the support plate (9), and the upper side of the lead screw (10) is fixedly connected to the handle (11), and the support plate (9) is fixedly connected to the support leg (2).

5. The automatic pressing and forming device for neodymium iron boron magnets according to claim 1, characterized in that: The support mechanism is composed of a second hydraulic rod (12) and an arc block (13). The second hydraulic rod (12) is located on the lower side of the base (1) and is arranged in an array. The output end of the second hydraulic rod (12) is fixedly connected to the arc block (13).

6. The automatic pressing and forming device for neodymium iron boron magnets according to claim 1, characterized in that: The base (1) is provided with a first dual-output shaft motor (14) on the front side, and the output shaft of the first dual-output shaft motor (14) is fixedly connected to the connecting rod (15), and the connecting rod (15) is rotatably connected to the support block (16), and the support block (16) is fixedly connected to the base (1).

7. The automatic pressing and forming device for neodymium iron boron magnets according to claim 6, characterized in that: The connecting rod (15) is fixedly connected to the first threaded rod (17), and the first threaded rod (17) is threadedly driven to the connecting block (18), and the connecting block (18) is fixedly connected to the L-shaped rod (19), and the L-shaped rod (19) is fixedly connected to the first clamping plate (20).

8. An automatic pressing and forming device for neodymium iron boron magnets according to claim 7, characterized in that: The limiting mechanism is composed of a first clamping plate (20), a first limiting rod (21), a slot (22), and a second clamping plate (23). The first clamping plate (20) is fixedly connected to the first limiting rod (21), and the first limiting rod (21) and the L-shaped rod (19) are slidably connected to the base (1). The base (1) has a slot (22) inside, and the slot (22) is slidably connected to the second clamping plate (23).

9. An automatic pressing and forming device for neodymium iron boron magnets according to claim 8, characterized in that: The first clamping plate (20) is symmetrical about the vertical center axis of the base (1) from left to right, and the second clamping plate (23) is symmetrical about the vertical center axis of the base (1) from front to back. The first clamping plate (20) and the L-shaped rod (19) correspond one-to-one with the first limiting rod (21), and the slot (22) corresponds one-to-one with the second clamping plate (23). The sides of the first clamping plate (20) and the second clamping plate (23) are in close contact with the lower mold (29).

10. An automatic pressing and forming device for neodymium iron boron magnets according to claim 8, characterized in that: The second clamping plate (23) is threadedly connected to the second threaded rod (24), and the second threaded rod (24) is fixedly connected to the output shaft of the second dual-output motor (25). The second dual-output motor (25) is located on the lower side of the base (1), and the second threaded rod (24) is symmetrical about the vertical central axis of the second dual-output motor (25). The second threaded rod (24) is rotatably connected to the vertical plate (26), and the vertical plate (26) is located on the lower side of the base (1). The vertical plate (26) is fixedly connected to the second limiting rod (27), and the second limiting rod (27) is slidably connected to the second clamping plate (23).

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