Device for improving coercive force of sintered neodymium-iron-boron permanent magnet material

Abstract

The invention relates to a device for improving the coercive force of a sintered neodymium-iron-boron permanent magnet material, and relates to the technical field of magnetic functional materials. The tank body is arranged on the frame plate; one end of the material conveying pipe penetrates through the frame plate, and the other end of the material conveying pipe is inserted into a pipe opening in the top end of the tank body; the quantifying assembly comprises a closed box which is fixedly arranged on the frame plate and is communicated with the tank body through a connecting pipe; the feeding part is arranged in the closed box and is used for conveying copper chloride powder; the weighing part is arranged below the feeding part and is used for quantitatively weighing copper chloride powder required for one time; the opening and closing part is arranged on the feeding part and used for controlling the opening and closing state of the feeding part; and the discharging assembly is arranged in the conveying pipe and used for quantitatively conveying the magnetic powder into the tank body. The method has the effect of improving the coercive force of the sintered neodymium-iron-boron permanent magnet material.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic functional materials, and in particular to a device for improving the coercive force of sintered NdFeB permanent magnet materials. Background Art

[0002] Neodymium iron boron (Nd-Fe-B) is a representative of the third generation of rare earth permanent magnet materials. Due to its excellent physical properties, it is widely used in various fields such as medical devices, intelligent robots, electronic equipment, and industrial motors. With the advancement of science and technology, the requirements for the performance of magnetic materials are constantly increasing, especially the demand for its coercive force is more urgent.

[0003] At present, the general method of improving the coercivity is to directly put the trace elements such as copper and aluminum that can improve the coercivity together with the main materials (rare metals such as rhenium, neodymium, terbium and pure iron, ferroboron, etc.) into a vacuum rapid solidification furnace to melt them into alloys for sheeting.

[0004] However, due to the uneven mixing of materials, most of the trace elements such as copper and aluminum will occupy the iron lattice during chemical reactions, and only a small part will be distributed in the boundary phase, which significantly reduces the effect of improving the coercive force. Summary of the invention

[0005] In order to improve the coercive force of sintered NdFeB permanent magnet materials, the present application provides a device for improving the coercive force of sintered NdFeB permanent magnet materials.

[0006] The present application provides a device for improving the coercive force of sintered NdFeB permanent magnet materials, which adopts the following technical solution: A device for improving the coercive force of sintered NdFeB permanent magnet material, comprising: Shelf board; A tank body is arranged on the frame plate; A material delivery pipe, one end of which is passed through the frame plate and the other end is plugged into the top pipe opening of the tank body; Quantitative components, including: A closed box, fixed on the frame plate and connected to the tank body through a connecting pipe; A feeding part, which is arranged in the closed box and is used to transport copper chloride powder; A weighing part, arranged below the feeding part and used for quantitatively weighing the copper chloride powder required once; An opening and closing part, which is arranged on the feeding part and is used to control the opening and closing state of the feeding part; The material discharge assembly is arranged in the material delivery pipe and is used for quantitatively delivering magnetic powder into the tank body.

[0007] By adopting the above technical solution, in the production process, the main alloy needs to be normally spun, hydrogen-broken, and powdered, and copper chloride powder is directly added to the powder and stirred evenly, and then pressed and sintered; During the powder making process, the feeding part transports the cupric chloride powder, and the weighing part quantitatively weighs the required cupric chloride powder once. When the weighing is completed, the opening and closing part closes the feeding part, and the unloading component quantitatively transports the magnetic powder into the tank body, and the weighed cupric chloride powder and magnetic powder are evenly mixed to ensure the accuracy and consistency of each feeding, so that the subsequent sintering can be better completed, thereby facilitating the improvement of the coercive force of the sintered NdFeB permanent magnet material.

[0008] Optionally, the feeding part includes: A feed pipe, one end of which is passed through the closed box; A blocking block, one end of which is conical and matches the other end of the feed pipe, and the blocking block is slidably connected to the closing box; A return spring has one end fixedly connected to an end of the blocking block away from the feed pipe, and the other end connected to the opening and closing portion.

[0009] By adopting the above technical solution, when the feed pipe does not feed copper chloride powder, the blocking block abuts against the feed pipe to form a seal under the elastic force of the return spring; when the copper chloride powder is fed into the feed pipe, under the action of gravity, the copper chloride powder squeezes the blocking block to move, so that the copper chloride powder can flow out from the gap between the blocking block and the feed pipe; When the weighing is completed, the blocking block blocks the feed pipe again to prevent the copper chloride powder from continuing to flow out, thereby achieving the quantitative addition of the copper chloride powder and improving production efficiency.

[0010] Optionally, the weighing unit includes: A weighing box, the top and one side wall of which are both open, and the weighing box is located below the feeding tube; The weight sensor is fixedly arranged on the bottom end of the closed box and abuts against the weighing box. The weight sensor is used to output a weight signal of the copper chloride powder in the weighing box.

[0011] By adopting the above technical solution, the cupric chloride powder flows out from the gap between the sealing block and the feed pipe, and falls into the weighing box along the inclined surface of the sealing block. The weight sensor can accurately measure the weight of the cupric chloride powder in the weighing box. When the weight reaches the preset value, the system can automatically stop feeding, thereby improving production efficiency.

[0012] Optionally, the opening and closing part: A limit box is fixed on the inner wall of the closed box; A connecting rod, which is passed through the limit box and has one end fixedly connected to an end of the blocking block away from the feed pipe; A slide plate, slidably connected in the limit box and fixedly connected to an end of the connecting rod away from the blocking block; The limit plate is located below the slide plate and is slidably connected to the limit box. The return spring is located between the slide plate and the limit plate and is respectively fixed to the slide plate and the limit plate. In the initial state, the return spring is in a stretched state. An electric telescopic rod 1 is fixedly mounted on the inner wall of the closed box, and a movable end of the electric telescopic rod 1 is passed through the bottom end of the limit box and is fixedly connected to the limit plate; The controller is fixed on the closed box, and the electric telescopic rod 1 and the weight sensor are both electrically connected to the controller.

[0013] By adopting the above technical solution, the weight sensor can accurately measure the weight of the cupric chloride powder in the weighing box, and output the weight signal of the cupric chloride powder in the weighing box to the controller. The controller responds to the weight signal output by the weight sensor, and controls the movable end of the electric telescopic rod to move. The movable end of the electric telescopic rod pushes the limit plate to move. The limit plate pushes the slide plate to move through the reset spring. The slide plate pushes the connecting rod to move. The connecting rod pushes the blocking block to move, and the feeding pipe is blocked, thereby ensuring accurate weighing of the cupric chloride powder.

[0014] Optionally, the blanking component includes: Cutting section, including: An air pump, disposed on the connecting pipe and electrically connected to the controller; An infrared sensor is fixedly mounted on the inner wall of the connecting tube and is used to output a displacement signal of the copper chloride powder in the connecting tube, and the infrared sensor is electrically connected to the controller; The material storage pipe is annular, fixed on the inner wall of the tank, and connected with the connecting pipe; A plurality of spray pipes are provided, and the plurality of spray pipes are arranged around the axis direction of the tank body, one end of the spray pipe is connected to the material storage pipe, and the other end is inclined toward the direction close to the material delivery pipe; The fixed plate is provided with a plurality of feeding openings; A plurality of closing plates are provided, the plurality of closing plates correspond to the plurality of material discharge ports one by one, and one end of the closing plates are fixedly connected to each other, and the closing plates are rotatably connected to the fixed plate via a rotating shaft; Gear 1, coaxially fixed on the rotating shaft; A driving unit, disposed on the feeding pipe and used to drive the gear to rotate; The shock part is arranged on the feeding pipe and is used for shocking the magnetic powder into the tank body.

[0015] By adopting the above technical solution, magnetic powder is delivered into the tube body through the feeding pipe, and when the magnetic powder is not delivered, the sealing plate blocks the delivery opening on the fixed plate; When the weighing is completed, the controller controls the air pump to start, and the air pump generates negative pressure in the connecting pipe, pumping all the copper chloride powder in the closed box into the storage pipe and spraying it out through the spray pipe; At the same time, the infrared sensor monitors in real time whether the copper chloride powder in the connecting pipe is input into the connecting pipe, and the infrared sensor outputs a displacement signal to the controller. The controller controls the driving unit to start, and the driving unit drives the gear to rotate, and the gear drives the closing plate to rotate, and the closing plate opens the feeding port, and the magnetic powder falls from the feeding port into the tank body. During the falling process, the shocking unit knocks the wall of the feeding pipe, so that all the magnetic powder is shaken off; At this time, the cupric chloride powder pumped by the air pump and the falling magnetic powder enter the tank at the same time, and the cupric chloride powder and the falling magnetic powder collide with each other and are initially mixed evenly, so that the subsequent sintering can be completed better, thereby facilitating the improvement of the coercive force of the sintered NdFeB permanent magnet material.

[0016] Optionally, the driving unit includes: The second electric telescopic rod is fixed on the conveying pipe and is electrically connected to the controller; The spur rack 1 is coaxially fixedly connected with the movable end of the electric telescopic rod 2 and meshes with the gear 1.

[0017] By adopting the above technical solution, the controller controls the movement of the movable end of the electric telescopic rod 2, the movable end of the electric telescopic rod 2 drives the spur rack 1 to move, and the spur rack 1 drives the gear 1 to rotate, thereby facilitating the accurate unloading of magnetic powder.

[0018] Optionally, the shocking part includes: The shock box is fixed on the inner wall of the conveying pipe; A rotating rod, one end of which is passed through the shock box and is rotatably connected to the shock box; Gear 2, coaxially connected to one end of the rotating rod and meshing with the spur rack 1; An incomplete gear, coaxially connected to the other end of the rotating rod and located in the shock box; a second spur rack meshing with the incomplete gear and slidably connected to the shock box via a limiting plate; A compression spring, both ends of which are respectively fixed to the inner wall of the shock box and the second spur rack, and in an initial state, the compression spring is in a compressed state; The jar hammer is fixedly arranged on one end of the second spur rack away from the compression spring.

[0019] By adopting the above technical solution, when magnetic powder is not discharged, the closing plate blocks the discharge port on the fixed plate, at which time the incomplete gear and the spur rack are meshed, and the compression spring is in a compressed state to accumulate elastic force; Spur rack one drives gear two to rotate, gear two drives the rotating rod to rotate, the rotating rod drives the incomplete gear to rotate, the toothed part of the incomplete gear rotates away from spur rack two, and under the elastic force of the compression spring, spur rack two drives the jar hammer to move, and the jar hammer strikes the inner wall of the feed pipe, making it easy for the magnetic powder to fall.

[0020] Optionally, a fixing assembly is provided between the tank body and the feed pipe, and the fixing assembly includes: A clamping ring, fixedly sleeved on the feed pipe; The limiting ring is fixedly sleeved on the top pipe opening of the tank body and is provided with a clamping groove, in which the clamping ring can be clamped.

[0021] By adopting the above technical solution, a secure connection between the feed pipe and the tank body is achieved by clamping the clamping ring in the clamping groove of the limiting ring, which can prevent the feed pipe from shaking or falling off during use, thereby easily ensuring the stable operation of the equipment.

[0022] Optionally, the driving parts are provided with two groups, and the two groups of driving parts are respectively located on both sides of the gear one.

[0023] By adopting the above technical solution, the two sets of driving parts work simultaneously, which can significantly enhance the driving force on gear one, thereby improving the torque output of the entire transmission system.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: By setting up a closed box, a feeding part, a weighing part and an opening and closing part, the weighed cupric chloride powder and magnetic powder can be mixed evenly, ensuring the accuracy and consistency of each feeding, so that the subsequent sintering can be better completed, thereby facilitating the improvement of the coercive force of the sintered NdFeB permanent magnet material; By setting the feeding part, the driving part and the shock part, the magnetic powder can be easily dropped, and the feeding amount of the magnetic powder can be easily controlled; By providing a clamping ring and a limiting ring, a stable connection between the feed pipe and the tank body is achieved, which can prevent the feed pipe from shaking or falling off during use, thereby easily ensuring the stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application; Figure 2 is a cross-sectional view of a quantitative component in an embodiment of the present application; Figure 3 yes Figure 2Magnified view at A in the middle; Figure 4 yes Figure 2 Magnified view at B.

[0026] Description of reference numerals: 1. Shelf; 11. Legs; 2. Tank; 21. Connecting pipe; 3. Feeding pipe; 4. Fixing assembly; 41. Clamping ring; 42. Limiting ring; 421. Slot; 5. Dosing assembly; 51. Closing box; 52. Feeding part; 521. Feeding pipe; 522. Blocking block; 523. Return spring; 53. Opening and closing part; 531. Limiting box; 532. Connecting rod; 533. Slide plate; 534. Limiting plate; 535. Electric telescopic rod 1; 536. Controller; 54. Weighing part; 541. Weighing box; 542. Weight sensor; 6. Feeding assembly; 61. Feeding unit; 611. Air pump; 612. Infrared sensor; 613. Feeding tube; 614. Feeding tube; 615. Fixing plate; 616. Closing plate; 617. Gear 1; 62. Driving unit; 621. Electric telescopic rod 2; 622. Straight rack 1; 63. Shock unit; 631. Shock box; 632. Rotating rod; 633. Gear 2; 634. Incomplete gear; 635. Straight rack 2; 636. Compression spring; 637. Shock hammer. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The present application embodiment discloses a device for improving the coercive force of sintered NdFeB permanent magnet material. Figure 1 and Figure 2 A device for improving the coercive force of sintered NdFeB permanent magnet material includes a frame plate 1, a tank body 2, a feed pipe 3, a fixing component 4, a quantitative component 5 and a feeding component 6, wherein the tank body 2 is arranged on the ground; one end of the feed pipe 3 is passed through the frame plate 1, and the other end is plugged into the top pipe opening of the tank body 2; the two ends of the fixing component 4 are respectively connected to the feed pipe 3 and the top pipe opening of the tank body 2, and the fixing component 4 is used to increase the connection stability between the feed pipe 3 and the tank body 2; the quantitative component 5 is arranged on the tank body 2, and quantitatively weighs the copper chloride powder required once; the feeding component 6 is arranged in the feed pipe 3, and is used to quantitatively transport the magnetic powder into the tank body 2.

[0029] When in use, when sintering NdFeB permanent magnet material, the main alloy is first normally spun, hydrogen-broken and powdered, the fixing component 4 increases the connection stability between the feeding pipe 3 and the tank body 2, and the cupric chloride powder is directly added to the prepared powder and stirred evenly, and then pressed and sintered; in the powder making process, the quantitative component 5 quantitatively weighs the required cupric chloride powder once, the unloading component 6 quantitatively conveys the magnetic powder into the tank body 2, and the weighed cupric chloride powder and the magnetic powder are evenly mixed to ensure the accuracy and consistency of each feeding, so that the subsequent sintering can be better completed, thereby easily improving the coercive force of the sintered NdFeB permanent magnet material.

[0030] Reference Figure 1 and Figure 2 The frame plate 1 is in the shape of a rectangular plate and is arranged horizontally. The four vertices at the bottom of the frame plate 1 are respectively fixed with legs 11. The tank body 2 is arranged vertically, and the top and bottom of the tank body 2 are both in a constricted shape. The feed pipe 3 is arranged vertically, and the feed pipe 3 is divided into an A pipe and a B pipe in the vertical downward direction. The A pipe is in the shape of a rectangular pipe, and the B pipe is in the shape of a circular pipe. The A pipe is in a constricted shape toward the direction close to the B pipe.

[0031] Reference Figure 2 The fixing assembly 4 includes a clamping ring 41 and a limiting ring 42. The clamping ring 41 is in a circular ring shape and is fixedly sleeved on the B tube of the feed pipe 3. The limiting ring 42 is in an annular plate shape and is fixedly sleeved on the top pipe opening of the tank body 2. A clamping groove 421 is provided on the limiting ring 42, and the clamping ring 41 can be clamped in the clamping groove 421.

[0032] Reference Figure 2 The quantitative component 5 includes a closed box 51, a feeding part 52, an opening and closing part 53 and a weighing part 54. The closed box 51 is in a rectangular box shape and is vertically arranged. The closed box 51 is fixed to the bottom end of the frame plate 1 and is connected to the tank body 2 through a connecting pipe 21.

[0033] Reference Figure 1 The feeding part 52 includes a feeding pipe 521, a blocking block 522 and a return spring 523. The feeding pipe 521 is in a rectangular tube shape and is vertically arranged. The top end of the feeding pipe 521 is bent in a vertically upward direction away from the vertical axis of the closed box 51 and is passed through the frame plate 1.

[0034] The blocking block 522 is rectangular and vertically arranged, the top of the blocking block 522 is conical and abuts against the bottom of the feed pipe 521, and the top of the blocking block 522 is adapted to the bottom of the feed pipe 521. One end of the return spring 523 is fixedly connected to one end of the blocking block 522 away from the feed pipe 521, and the other end is connected to the opening and closing part 53.

[0035] Reference Figure 2The opening and closing part 53 includes a limit box 531, a connecting rod 532, a slide plate 533 and a limit plate 534. The limit box 531 is rectangular and vertically arranged. The limit box 531 is fixed on the inner wall of the closed box 51. The connecting rod 532 is passed through the top of the limit box 531, and one end of the connecting rod 532 is fixedly connected to the end of the blocking block 522 away from the feeding pipe 521.

[0036] Reference Figure 2 The slide plate 533 is in the shape of a rectangular plate and is arranged horizontally. The slide plate 533 is slidably connected in the limit box 531, and the sliding direction is the vertical direction. The slide plate 533 is fixedly connected to the end of the connecting rod 532 away from the blocking block 522. The limit plate 534 is in the shape of a rectangular plate and is arranged horizontally. The limit plate 534 is located below the slide plate 533 and is slidably connected to the limit box 531. The sliding direction of the limit plate 534 is the vertical direction. The return spring 523 is located between the slide plate 533 and the limit plate 534, and is fixedly connected to the slide plate 533 and the limit plate 534 respectively. In the initial state, the return spring 523 is in a stretched state.

[0037] Reference Figure 2 The electric telescopic rod 535 is vertically arranged and fixed on the inner wall of the closed box 51. The movable end of the electric telescopic rod 535 is passed through the bottom end of the limit box 531 and is fixedly connected to the limit plate 534. The controller 536 is fixed on the closed box 51. The electric telescopic rod 535 and the weight sensor 542 are both electrically connected to the controller 536.

[0038] Reference Figure 2 The weighing part 54 includes a weighing box 541 and a weight sensor 542. The weighing box 541 is in a rectangular box shape and is arranged horizontally. The top of the weighing box 541 and the side wall close to the tank body 2 are both open. The weighing box 541 is located below the feeding pipe 521. The weight sensor 542 is fixed on the bottom end of the closed box 51. The weight sensor 542 is located below the weighing box 541 and abuts against the weighing box 541. The weight sensor 542 is used to output a weight signal of the copper chloride powder in the weighing box 541.

[0039] When in use, when the feed pipe 521 does not feed copper chloride powder, under the elastic force of the return spring 523, the blocking block 522 abuts against the feed pipe 521 to form a seal; copper chloride powder is fed into the feed pipe 521, and the copper chloride powder gradually falls along the inclined side, and under the action of gravity, the copper chloride powder squeezes the blocking block 522 to move downward, so that the copper chloride powder can flow out from the gap between the blocking block 522 and the feed pipe 521; The copper chloride powder flows out from the gap between the blocking block 522 and the feed pipe 521 and falls into the weighing box 541 along the inclined surface of the blocking block 522. The weight sensor 542 measures the weight of the copper chloride powder in the weighing box 541 and outputs a weight signal to the controller 536. When the weighing reaches the preset value, the controller 536 controls the movable end of the electric telescopic rod 535 to extend, and the movable end of the electric telescopic rod 535 pushes the limit plate 534 to move upward. The limit plate 534 pushes the slide plate 533 to move through the return spring 523, and the slide plate 533 pushes the connecting rod 532 to move. The connecting rod 532 pushes the blocking block 522 to move, and the feed pipe 521 is blocked again to prevent the copper chloride powder from continuing to flow out, thereby ensuring the accurate weighing of the copper chloride powder.

[0040] Reference Figure 2 and Figure 3 The unloading assembly 6 includes a unloading part 61, a driving part 62 and a shock part 63. The unloading part 61 includes an air pump 611, an infrared sensor 612, a material storage pipe 613, a material spraying pipe 614, a fixing plate 615, a closing plate 616 and a gear 617. The air pump 611 is arranged on the connecting pipe 21 and is electrically connected to the controller 536.

[0041] Reference Figure 2 The infrared sensor 612 is fixed on the inner wall of the connecting tube 21 and is used to output the displacement signal of the copper chloride powder in the connecting tube 21. The infrared sensor 612 is electrically connected to the controller 536. The material storage tube 613 is annular and fixed on the inner wall of the tank body 2. The material storage tube 613 is connected to the connecting tube 21.

[0042] Reference Figure 2 There are multiple spray pipes 614, which are evenly arranged around the axis of the tank body 2. The spray pipes 614 are vertically arranged, the bottom ends of the spray pipes 614 are connected to the storage pipe 613, and the top ends are inclined toward the direction close to the delivery pipe 3.

[0043] Reference Figure 3 The fixed plate 615 is in a rectangular plate shape and is arranged horizontally. The fixed plate 615 is provided with a plurality of material discharge ports, which are evenly arranged around the vertical axis direction of the fixed plate 615. A plurality of closing plates 616 are provided, and the plurality of closing plates 616 correspond to the plurality of material discharge ports one by one. One ends of the plurality of closing plates 616 are fixedly connected to each other, and the closing plates 616 are rotatably connected to the bottom end of the fixed plate 615 through a rotating shaft. Gear 1 617 is coaxially fixed on the rotating shaft.

[0044] Reference Figure 3 The driving part 62 is provided with two groups, and the two groups of driving parts 62 are respectively located on both sides of the gear 1 617. The driving part 62 includes an electric telescopic rod 2 621 and a spur rack 1 622. The electric telescopic rod 2 621 is horizontally arranged and fixed on the inner wall of the conveying pipe 3. The electric telescopic rod 2 621 is electrically connected to the controller 536. The spur rack 1 622 is coaxially fixed to the movable end of the electric telescopic rod 2 621 and meshes with the gear 1 617.

[0045] Reference Figure 3 and Figure 4 The shocking part 63 is provided with two groups, and the two groups of shocking parts 63 correspond to the two groups of driving parts 62 respectively. The shocking part 63 includes a shocking box 631, a rotating rod 632, a second gear 633, an incomplete gear 634, a second spur rack 635 and a pressing spring 636. The shocking box 631 is fixed on the inner wall of the B tube of the conveying pipe 3. The rotating rod 632 is vertically arranged, and the top end of the rotating rod 632 is penetrated on the shocking box 631 and is rotatably connected with the shocking box 631.

[0046] Gear 2 633 is coaxially fixedly connected to the top of rotating rod 632 and meshes with spur rack 1 622. Incomplete gear 634 is coaxially fixedly connected to the other end of rotating rod 632 and is located in shock box 631. Spur rack 2 635 meshes with incomplete gear 634 and is slidably connected to shock box 631 through a limiting plate.

[0047] Reference Figure 4 The two ends of the compression spring 636 are respectively connected to the inner wall of the shock box 631 and the second spur rack 635. In the initial state, the compression spring 636 is in a compressed state. The shock hammer 637 is fixed on one end of the second spur rack 635 away from the compression spring 636.

[0048] When in use, after weighing is completed, the controller 536 controls the air pump 611 to start, and the air pump 611 pumps all the copper chloride powder in the closed box 51 into the storage pipe 613 and sprays it outward through the spray pipe 614; At the same time, the infrared sensor 612 monitors in real time whether the cupric chloride powder in the connecting tube 21 is input into the connecting tube 21, and the infrared sensor 612 outputs a displacement signal to the controller 536, and the controller 536 controls the movable end of the electric telescopic rod 2 621 to move, and the movable end of the electric telescopic rod 2 621 drives the spur rack 1 622 to move, and the spur rack 1 622 drives the gear 1 617 to rotate, and the gear 1 617 drives the closing plate 616 to rotate, and the closing plate 616 opens the discharge port, and the magnetic powder falls from the discharge port into the tank body 2; During the falling process, the spur rack 1 622 drives the gear 2 633 to rotate, the gear 2 633 drives the rotating rod 632 to rotate, the rotating rod 632 drives the incomplete gear 634 to rotate, the toothed part of the incomplete gear 634 rotates away from the spur rack 2 635, and under the elastic force of the compression spring 636, the spur rack 2 635 drives the jar 637 to move, and the jar 637 strikes the inner wall of the conveying pipe 3, so that the magnetic powder is easy to fall; The cupric chloride powder pumped by the air pump 611 and the falling magnetic powder enter the tank body 2 at the same time. The cupric chloride powder and the falling magnetic powder collide with each other and are initially mixed evenly, so that the subsequent sintering can be completed better, thereby facilitating the improvement of the coercive force of the sintered NdFeB permanent magnet material.

[0049] The implementation principle of the device for improving the coercive force of sintered NdFeB permanent magnet material in the embodiment of the present application is as follows: during the powder making process, the cupric chloride powder gradually falls along the inclined side, and the cupric chloride powder squeezes the blocking block 522 to move downward, so that the cupric chloride powder can flow out from the gap between the blocking block 522 and the feed pipe 521; The copper chloride powder flows out from the gap between the blocking block 522 and the feed pipe 521 and falls into the weighing box 541 along the inclined surface of the blocking block 522. The weight sensor 542 measures the weight of the copper chloride powder in the weighing box 541 and outputs a weight signal to the controller 536. When the weighing reaches the preset value, the controller 536 controls the movable end of the electric telescopic rod 535 to extend, and the electric telescopic rod 535 pushes the blocking block 522 to move, and the feed pipe 521 is blocked again to prevent the copper chloride powder from continuing to flow out, thereby ensuring the accurate weighing of the copper chloride powder; When the weighing is completed, the controller 536 controls the air pump 611 to start, and the air pump 611 pumps all the copper chloride powder in the closed box 51 into the storage pipe 613 and sprays it out through the spray pipe 614; At the same time, the infrared sensor 612 monitors in real time whether the copper chloride powder in the connecting tube 21 is input into the connecting tube 21, and the controller 536 controls the movable end of the electric telescopic rod 2 621 to drive the spur rack 1 622 to move, and the spur rack 1 622 drives the gear 1 617 to rotate, and the gear 1 617 drives the closing plate 616 to rotate, and the closing plate 616 opens the discharge port, and the magnetic powder falls from the discharge port into the tank body 2; During the falling process, the spur rack 1 622 drives the gear 2 633 to rotate, the gear 2 633 drives the rotating rod 632 to rotate, the rotating rod 632 drives the incomplete gear 634 to rotate, the toothed part of the incomplete gear 634 rotates away from the spur rack 2 635, and under the elastic force of the compression spring 636, the spur rack 2 635 drives the jar 637 to move, and the jar 637 strikes the inner wall of the conveying pipe 3, so that the magnetic powder is easy to fall; The cupric chloride powder pumped by the air pump 611 and the falling magnetic powder enter the tank body 2 at the same time. The cupric chloride powder and the falling magnetic powder collide with each other and are initially mixed evenly, so that the subsequent sintering can be completed better, thereby facilitating the improvement of the coercive force of the sintered NdFeB permanent magnet material.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for improving the coercive force of sintered NdFeB permanent magnet material, characterized in that: include: Shelf (1); A tank body (2) is arranged on the frame plate (1); A material conveying pipe (3), one end of which is passed through the frame plate (1) and the other end of which is plugged into the top pipe opening of the tank body (2); Quantitative components (5), including: A closed box (51) is fixedly mounted on the frame plate (1) and is connected to the tank body (2) via a connecting pipe (21); A feeding section (52) is disposed in the closed box (51) and is used to transport copper chloride powder; A weighing section (54) is disposed below the feeding section (52) and is used to quantitatively weigh the copper chloride powder required once; An opening and closing portion (53) is disposed on the feeding portion (52) and is used to control the opening and closing state of the feeding portion (52); A material discharge assembly (6) is arranged in the material delivery pipe (3) and is used to quantitatively deliver magnetic powder into the tank body (2).

2. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 1, characterized in that: The feeding part (52) comprises: A feed pipe (521), one end of which is passed through the closed box (51); A blocking block (522) having one end in a conical shape and adapted to fit the other end of the feed pipe (521), the blocking block (522) being slidably connected to the sealing box (51); A return spring (523) has one end fixedly connected to an end of the blocking block (522) away from the feed pipe (521), and the other end connected to the opening and closing portion (53).

3. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 2, characterized in that: The weighing unit (54) comprises: A weighing box (541), the top and one side wall of which are both open, and the weighing box (541) is located below the feeding tube (521); A weight sensor (542) is fixedly mounted on the bottom end of the closed box (51) and is in contact with the weighing box (541). The weight sensor (542) is used to output a weight signal of the copper chloride powder in the weighing box (541).

4. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 3, characterized in that: The opening and closing part (53): A limit box (531) is fixedly mounted on the inner wall of the closed box (51); A connecting rod (532) is passed through the limit box (531), and one end of the connecting rod is fixedly connected to an end of the blocking block (522) away from the feeding pipe (521); A slide plate (533) is slidably connected in the limit box (531) and is fixedly connected to an end of the connecting rod (532) away from the blocking block (522); The limit plate (534) is located below the slide plate (533) and is slidably connected to the limit box (531); the return spring (523) is located between the slide plate (533) and the limit plate (534) and is respectively fixed to the slide plate (533) and the limit plate (534); in an initial state, the return spring (523) is in a stretched state; An electric telescopic rod (535) is fixedly mounted on the inner wall of the closed box (51); a movable end of the electric telescopic rod (535) is passed through the bottom end of the limit box (531) and is fixedly connected to the limit plate (534); The controller (536) is fixedly mounted on the closed box (51), and the electric telescopic rod (535) and the weight sensor (542) are both electrically connected to the controller (536).

5. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 4, characterized in that: The blanking component (6) comprises: The blanking part (61) comprises: An air pump (611) is disposed on the connecting pipe (21) and is electrically connected to the controller (536); an infrared sensor (612) fixedly mounted on the inner wall of the connecting tube (21) and used to output a displacement signal of the copper chloride powder in the connecting tube (21); the infrared sensor (612) is electrically connected to the controller (536); The material storage pipe (613) is annular and fixedly mounted on the inner wall of the tank body (2) and is connected to the connecting pipe (21); A plurality of material spraying pipes (614) are provided, and the plurality of material spraying pipes (614) are arranged around the axis direction of the tank body (2), one end of the material spraying pipe (614) is connected to the material storage pipe (613), and the other end is inclined in a direction close to the material delivery pipe (3); The fixed plate (615) is provided with a plurality of material discharge openings; A plurality of closing plates (616) are provided, the plurality of closing plates (616) correspond to the plurality of material discharge ports one by one, and one end of the closing plates (616) is fixedly connected to each other, and the closing plates (616) are rotatably connected to the fixed plate (615) via a rotating shaft; Gear 1 (617), coaxially fixed on the rotating shaft; A driving unit (62) is disposed on the material conveying pipe (3) and is used to drive the gear 1 (617) to rotate; The shock part (63) is arranged on the conveying pipe (3) and is used to shock the magnetic powder into the tank body (2).

6. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 5, characterized in that: The driving unit (62) comprises: The second electric telescopic rod (621) is fixedly mounted on the material conveying pipe (3) and is electrically connected to the controller (536); The spur rack 1 (622) is coaxially fixedly connected to the movable end of the electric telescopic rod 2 (621) and meshes with the gear 1 (617).

7. A device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 6, characterized in that: The shocking part (63) comprises: A shock box (631) is fixedly mounted on the inner wall of the feed pipe (3); A rotating rod (632), one end of which is passed through the shock box (631) and is rotatably connected to the shock box (631); Gear 2 (633) is coaxially fixedly connected to one end of the rotating rod (632) and meshes with the spur rack 1 (622); An incomplete gear (634) is coaxially fixedly connected to the other end of the rotating rod (632) and is located in the shock box (631); A second spur rack (635) meshing with the incomplete gear (634) and slidably connected to the shock box (631) via a limiting plate; A compression spring (636), both ends of which are respectively fixedly connected to the inner wall of the shock box (631) and the second spur rack (635); in an initial state, the compression spring (636) is in a compressed state; The shock hammer (637) is fixedly mounted on one end of the second spur rack (635) away from the compression spring (636).

8. The device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 1, characterized in that: A fixing assembly (4) is provided between the tank body (2) and the material delivery pipe (3), and the fixing assembly (4) comprises: A clamping ring (41) fixedly sleeved on the feed pipe (3); The limiting ring (42) is fixedly sleeved on the top pipe opening of the tank body (2) and is provided with a clamping groove (421), and the clamping ring (41) can be clamped in the clamping groove (421).

9. The device for improving the coercive force of sintered NdFeB permanent magnet material according to claim 6, characterized in that: The driving parts (62) are provided in two groups, and the two groups of driving parts (62) are respectively located on both sides of the gear one (617).

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