Pretreatment device for neodymium-iron-boron magnet

Abstract

The invention belongs to the technical field of neodymium-iron-boron magnet pretreatment, and particularly relates to a neodymium-iron-boron magnet pretreatment device which comprises a workbench, connecting frames, electric push rods, a connecting base, an arc-shaped supporting frame, a first elastic piece and a second elastic piece, the connecting frames are connected to the two sides of the top of the workbench, and the electric push rods are installed on the two connecting frames; and telescopic rods of the two electric push rods are slidably connected with connecting bases, second elastic pieces are connected between the connecting bases and the telescopic rods of the electric push rods, the upper sides and the lower sides of the connecting bases are rotatably connected with arc-shaped supporting frames, and first elastic pieces are connected between the arc-shaped supporting frames and the connecting bases. In the process of grinding the annular or tubular neodymium-iron-boron magnet, acute angles of an inner ring and an outer ring on the neodymium-iron-boron magnet can be ground through the U-shaped grinding groove in the grinding disc at the same time, equipment does not need to be replaced in the grinding process, and therefore the machining and grinding efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of pretreatment of NdFeB magnets, and in particular relates to a pretreatment device for NdFeB magnets. Background Art

[0002] NdFeB magnets are widely used in motors, sensors, speakers and other high-tech fields due to their excellent magnetic properties, good temperature stability and mechanical strength. This material can provide extremely high magnetic energy product, allowing the device to maintain strong magnetic force in a smaller size, greatly improving the efficiency and performance of the product.

[0003] In the processing of NdFeB magnets, sintering is usually adopted. In order to improve the appearance of the product and prevent workers from being scratched during operation, manufacturers need to grind the sharp corners of the edges of NdFeB magnets. Especially for circular or tubular NdFeB magnets, due to their special shapes, the sharp corners of the inner and outer rings need to be polished at the same time. However, the existing grinding method requires the use of two grinding equipments of different sizes to process the sharp corners of the inner and outer rings respectively. This results in the equipment having to be adjusted repeatedly during the grinding process, which seriously affects the production efficiency of the magnets. Summary of the invention

[0004] In view of this, the present invention provides a pretreatment device for NdFeB magnets.

[0005] The technical solution of the present invention is: a pretreatment device for NdFeB magnets, comprising a workbench, a connecting frame, an electric push rod, a connecting seat, an arc-shaped support frame, an electric roller, an elastic member 1, an elastic member 2 and a grinding mechanism, wherein connecting frames are connected to both sides of the top of the workbench, electric push rods are installed on the two connecting frames, connecting seats are slidably connected to the telescopic rods of the two electric push rods, elastic member 2 is connected between the connecting seat and the telescopic rod of the electric push rod, arc-shaped support frames are rotatably connected to the upper and lower sides of the connecting seat, elastic member 1 is connected between the arc-shaped support frame and the connecting seat, an electric roller is installed at one end of the arc-shaped support frame away from the connecting seat, the electric rollers on both sides are close to each other to clamp the NdFeB magnet, a discharging port is opened in the middle of the workbench, and a grinding mechanism for grinding the NdFeB magnet is provided on the workbench.

[0006] Preferably, an extrusion frame is further included, and the lower side of the side where the two connecting frames are close to each other is connected with an extrusion frame, and the extrusion frame is used to support the arc-shaped supporting frame below.

[0007] Preferably, the grinding mechanism includes a sliding table, a connecting plate and a grinding disc, the sliding tables are slidably connected to the middle of both sides of the top of the workbench, the upper parts of the two sliding tables are slidably connected to the connecting plates, and the sides of the two connecting plates close to each other are connected to the grinding discs.

[0008] Preferably, a U-shaped grinding groove is provided on one side of the two grinding discs close to each other, and grinding chamfers are provided on both inner and outer sides of the grinding groove.

[0009] Preferably, a transmission mechanism is also included, which includes a connecting rod, a guide frame and an extension shaft. The telescopic rods of the two electric push rods are connected to the connecting rods, and the ends of the two connecting rods that are away from each other are connected to the extension shafts. Both sides of the sliding platform are connected to the guide frames, and the guide frames are provided with guide grooves, and the extension shaft is located in the guide grooves.

[0010] Preferably, a feeding mechanism is also included, which includes a feeding frame, a cylindrical gear, a reduction motor, an arc-shaped support tray and a belt transmission group. The feeding frame is connected between the tops of the two connecting frames, and openings are provided on both sides of the lower part of the feeding frame. Two grinding discs are respectively aligned with the two openings. The middle part of the feeding frame is rotatably connected to the arc-shaped support tray, and both sides of the feeding frame are rotatably connected to cylindrical gears. The outer arc surface of the arc-shaped support tray is provided with tooth grooves, and the cylindrical gears are meshed with the tooth grooves. A belt transmission group is installed between the rear sides of the two cylindrical gears, and a reduction motor is installed on the feeding frame, and the output shaft of the reduction motor is connected to one of the cylindrical gears.

[0011] Preferably, a buffer mechanism is also included, which includes a rotating shaft, four elastic parts and a buffer block. The two sides of the discharge port are rotatably connected with the rotating shaft, two elastic parts four are connected between the rotating shaft and the discharge port, and multiple buffer blocks are evenly spaced and connected to the rotating shaft.

[0012] Preferably, a collecting frame and a screen are further included. A collecting frame is arranged in the middle of the lower part of the workbench, an outlet is arranged on one side of the collecting frame, an inclined screen is arranged in the collecting frame, and the collecting frame is located below the discharge port.

[0013] The present invention has the following advantages: 1. In the process of grinding annular or tubular NdFeB magnets, the present invention can grind the sharp angles of the inner ring and the outer ring of the NdFeB magnet at the same time through the U-shaped grinding groove in the grinding disk. There is no need to replace the equipment during the grinding process, thereby ensuring the efficiency of processing and grinding.

[0014] 2. When adding NdFeB magnets, the present invention can put the NdFeB magnets into a blanking frame, support the NdFeB magnets with an arc-shaped support tray, and then control the rotation of the arc-shaped support tray to achieve the addition of the NdFeB magnets, which is more convenient when adding NdFeB magnets. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0016] Figure 2 It is a structural schematic diagram of the grinding mechanism of the present invention.

[0017] Figure 3 It is a front view of the present invention.

[0018] Figure 4 This is a front view of the extrusion frame of the present invention after it abuts against the lower arc-shaped support frame.

[0019] Figure 5 It is a schematic structural diagram of the connecting seat, arc-shaped support frame and electric roller of the present invention.

[0020] Figure 6 It is a cross-sectional view of the grinding mechanism of the present invention.

[0021] Figure 7 It is a structural schematic diagram of the transmission mechanism of the present invention.

[0022] Figure 8 It is a top view of the transmission mechanism of the present invention.

[0023] Fig. 9 It is a schematic diagram of the first structure of the blanking mechanism of the present invention.

[0024] Fig.10 It is a second structural schematic diagram of the blanking mechanism of the present invention.

[0025] Fig.11 It is a third structural schematic diagram of the blanking mechanism of the present invention.

[0026] Fig.12 It is a schematic diagram of the structure of the buffer mechanism, the collecting frame and the screen of the present invention.

[0027] Fig.13 It is a structural schematic diagram of the buffer mechanism of the present invention.

[0028] The meanings of the reference numerals in the figure are as follows: 1: workbench, 2: connecting frame, 3: electric push rod, 4: connecting seat, 5: arc-shaped support frame, 6: electric roller, 7: elastic part one, 8: elastic part two, 9: extrusion frame, 101: sliding table, 102: connecting plate, 103: grinding disc, 105: grinding chamfer, 111: connecting rod, 112: guide frame, 113: extension shaft, 114: guide groove, 121: unloading frame, 122: cylindrical gear, 123: reduction motor, 124: arc-shaped bearing tray, 125: belt drive group, 131: rotating shaft, 132: elastic part four, 133: buffer block, 141: collecting frame, 142: sieve, 100: NdFeB magnet. DETAILED DESCRIPTION

[0029] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0030] A pretreatment device for NdFeB magnets, such as Figure 1-Figure 6 As shown, it includes a workbench 1, a connecting frame 2, an electric push rod 3, a connecting seat 4, an arc-shaped support frame 5, an electric roller 6, an elastic member 1 7, an elastic member 2 8 and a grinding mechanism. The left and right sides of the top of the workbench 1 are connected to the connecting frame 2, the two connecting frames 2 are equipped with electric push rods 3, the telescopic rods of the two electric push rods 3 are slidably connected to the connecting seat 4, the connecting seat 4 and the telescopic rod of the electric push rod 3 are connected with an elastic member 2 8, the elastic member 2 8 is a reset spring, and the upper and lower sides of the connecting seat 4 are both rotating. An arc-shaped support frame 5 is dynamically connected, and an elastic member 7 is connected between the arc-shaped support frame 5 and the connecting seat 4, and the elastic member 7 is a torsion spring. An electric roller 6 is installed at one end of the arc-shaped support frame 5 away from the connecting seat 4, and the electric rollers 6 on both sides are close to each other to clamp the NdFeB magnet 100, and then the operation of the electric rollers 6 can drive the NdFeB magnet 100 to rotate. A discharge port is opened in the middle of the workbench 1, and a grinding mechanism for grinding the NdFeB magnet 100 is provided on the workbench 1.

[0031] like Figure 3 and Figure 4 As shown, an extrusion frame 9 is also included. The lower side of the side where the two side connecting frames 2 are close to each other is connected with an extrusion frame 9. The extrusion frame 9 is used to support the arc-shaped support frame 5 below, so that the arc-shaped support frame 5 below is located at the falling trajectory of the NdFeB magnet 100, and can support the falling NdFeB magnet 100.

[0032] like Figure 2 and Figure 6As shown, the grinding mechanism includes a sliding table 101, a connecting plate 102 and a grinding disc 103. The sliding tables 101 are slidably connected to the middle of the front and rear sides of the top of the workbench 1. The upper parts of the two sliding tables 101 are slidably connected to the connecting plates 102. The two connecting plates 102 are connected to the grinding discs 103 on the sides close to each other. The two grinding discs 103 are provided with U-shaped grinding grooves on the sides close to each other. Grinding chamfers 105 are provided on the inner and outer sides of the grinding grooves. When the two grinding discs 103 cover the NdFeB magnet 100, the U-shaped grinding groove can contact the inner and outer edges of the NdFeB magnet 100 respectively. Then, when the NdFeB magnet 100 rotates, the inner and outer edges of the NdFeB magnet 100 can be simultaneously polished through the U-shaped grinding groove, and the grinding efficiency is higher.

[0033] When the NdFeB magnet 100 needs to be processed, the device can be used. When in use, the annular NdFeB magnet 100 can be placed between the arc-shaped support frames 5 on both sides, and then the telescopic rod of the electric push rod 3 can be controlled to extend to drive the connecting seats 4 on both sides to approach each other through the elastic member 2 8. When the connecting seats 4 on both sides move, they can drive the arc-shaped support frames 5 and the electric roller 6 on both sides to move together, until the electric roller 6 moves to contact the NdFeB magnet 100, and the electric roller 6 and the arc-shaped support frame 5 no longer move. At this time, the telescopic rod of the electric push rod 3 continues to extend, which will cause the elastic member 2 8 to be stretched, and at the same time, it will squeeze the arc-shaped support frame 5 to swing, causing the elastic member 1 7 to deform, and through the elastic member 1 7 and the elastic member 2 8 at the same time Apply pressure to the arc-shaped support frame 5 and the electric roller 6, so that the electric roller 6 presses against the NdFeB magnet 100, and then push the two sliding tables 101 to approach each other, drive the two connecting plates 102 to approach each other, so that the two grinding discs 103 approach each other, and let the grinding discs 103 press against the NdFeB magnet 100, and then control the electric roller 6 to drive the NdFeB magnet 100 to rotate. While rotating, the sharp angles of the inner and outer rings of the NdFeB magnet 100 can be polished by the grinding discs 103. After polishing, pull the two sliding tables 101 away from each other, and then control the two electric push rods 3 to retract the telescopic rods. At this time, the arc-shaped support frame 5 below will be supported by the extrusion frame 9, so that the arc-shaped support frame 5 below swings. Figure 4 As shown, when placing the next NdFeB magnet 100, it is supported by the arc-shaped support frame 5 below, which makes the placement operation more convenient. Then the polished NdFeB magnet 100 can be taken out. In this way, the NdFeB magnet 100 can be pre-processed using the device, and during the polishing process, the sharp angles of the inner and outer rings of the NdFeB magnet 100 can be polished at the same time, which has higher polishing efficiency. The NdFeB magnet 100 targeted in this embodiment is a circular or tubular NdFeB magnet.

[0034] like Figure 7 and Figure 8As shown, a transmission mechanism is also included, which includes a connecting rod 111, a guide frame 112 and an extension shaft 113. The telescopic rods of the two electric push rods 3 are connected to the connecting rods 111, and the ends of the two connecting rods 111 that are away from each other are connected to the extension shaft 113. The left and right sides of the sliding platform 101 are connected to the guide frames 112, and the guide frames 112 are provided with guide grooves 114. The extension shaft 113 is located in the guide grooves 114. When the connecting rod 111 moves, it can drive the extension shaft 113 to move. When the extension shaft 113 moves in the guide grooves 114, it can squeeze the guide frame 112 through the guide grooves 114.

[0035] When the telescopic rod of the electric push rod 3 is extended, the connecting rod 111 and the extension shaft 113 will be driven to move together. The extension shaft 113 will move along the guide groove 114 when moving. When the extension shaft 113 moves to contact the inclined part of the guide groove 114, the extension shaft 113 continues to move to squeeze the guide groove 114, thereby driving the guide frame 112 to move. When the guide frame 112 moves, it can drive the sliding table 101 to move, so that the two sliding tables 101 are close to each other. In this way, the effect of automatically driving the sliding table 101 to move can be achieved, which is more convenient to operate.

[0036] like Figure 9-11 As shown, it also includes a feeding mechanism, which includes a feeding frame 121, a cylindrical gear 122, a reduction motor 123, an arc-shaped tray 124 and a belt drive group 125. The feeding frame 121 is connected between the tops of the two connecting frames 2. The front and rear sides of the lower part of the feeding frame 121 are both opened. The front and rear grinding discs 103 are respectively aligned with the two openings. The middle part of the feeding frame 121 is rotatably connected to the arc-shaped tray 124, and the arc-shaped tray 124 can support The NdFeB magnet 100 is held, and cylindrical gears 122 are rotatably connected to the left and right sides of the blanking frame 121. The outer arc surface of the arc-shaped supporting tray 124 is provided with tooth grooves, and the cylindrical gears 122 are meshed with the tooth grooves. A belt transmission group 125 is installed between the rear sides of the two cylindrical gears 122 so that the two cylindrical gears 122 can rotate synchronously. A reduction motor 123 is installed on the front side of the blanking frame 121, and the output shaft of the reduction motor 123 is connected to the left cylindrical gear 122.

[0037] When adding NdFeB magnets 100, the NdFeB magnets 100 can be added into the blanking frame 121, and the arc-shaped support tray 124 can hold the lowest NdFeB magnet 100. When it is necessary to add NdFeB magnets 100, the reduction motor 123 can be controlled to drive the two cylindrical gears 122 to rotate through the belt transmission group 125. When the cylindrical gears 122 rotate, they can drive the arc-shaped support tray 124 to rotate through the tooth grooves. When the arc-shaped support tray 124 rotates, After one hundred and eighty degrees, the NdFeB magnet 100 at the bottom will fall down and be supported by the arc-shaped support frame 5 and the electric roller 6 at the bottom. At this time, the arc-shaped supporting tray 124 can block the remaining NdFeB magnets 100. After the arc-shaped supporting tray 124 rotates one circle, the NdFeB magnet 100 at the top falls down and is blocked by the arc-shaped supporting tray 124 again. This process is repeated to realize the addition of NdFeB magnets 100. There is no need for manual hand-held addition during addition, and the operation is more convenient.

[0038] like Fig.12 and Fig.13 As shown, a buffer mechanism is also included, which includes a rotating shaft 131, an elastic member 132 and a buffer block 133. The left and right sides of the discharge port are rotatably connected with the rotating shaft 131. Two elastic members 132 are connected between the rotating shaft 131 and the discharge port. The elastic member 132 is a torsion spring. A plurality of buffer blocks 133 are evenly spaced and connected to the rotating shaft 131. When the polished NdFeB magnet 100 falls, it will fall on the buffer block 133, thereby squeezing the buffer block 133 to swing. At this time, the rotating shaft 131 rotates and the elastic member 132 is deformed. Due to the resistance of the elastic member 132, the swing speed of the buffer block 133 is slowed down to reduce the falling speed of the NdFeB magnet 100, buffer the falling of the NdFeB magnet 100, and prevent the NdFeB magnet 100 from falling too fast and colliding with the collection equipment.

[0039] like Fig.12 As shown, a collecting frame 141 and a screen 142 are also included. The collecting frame 141 is arranged in the middle of the lower part of the workbench 1, and an outlet is arranged on the left side of the collecting frame 141. A screen 142 with a lower left side and a higher right side is arranged in the collecting frame 141. The collecting frame 141 is located below the discharge port. When the NdFeB magnet 100 falls, it will fall into the collecting frame 141. Impurities in the grinding process will pass through the screen 142 and fall into the lower part of the collecting frame 141. The NdFeB magnet 100 will slide out from the outlet through the screen 142, thereby achieving the effect of sorting the NdFeB magnet 100 and the debris in the grinding process.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A pretreatment device for NdFeB magnets, characterized in that: The invention comprises a workbench (1), a connecting frame (2), an electric push rod (3), a connecting seat (4), an arc-shaped support frame (5), an electric roller (6), an elastic member 1 (7), an elastic member 2 (8) and a grinding mechanism, wherein both sides of the top of the workbench (1) are connected to the connecting frames (2), the two connecting frames (2) are each equipped with an electric push rod (3), the telescopic rods of the two electric push rods (3) are slidably connected to the connecting seat (4), and the elastic member 2 (8) is connected between the connecting seat (4) and the telescopic rods of the electric push rods (3). 8), the upper and lower sides of the connecting seat (4) are rotatably connected to arc-shaped support frames (5), an elastic member (7) is connected between the arc-shaped support frame (5) and the connecting seat (4), an electric roller (6) is installed at one end of the arc-shaped support frame (5) away from the connecting seat (4), and the electric rollers (6) on both sides are close to each other to clamp the neodymium iron boron magnet (100), a discharge port is opened in the middle of the workbench (1), and a grinding mechanism for grinding the neodymium iron boron magnet (100) is provided on the workbench (1).

2. A pretreatment device for NdFeB magnets according to claim 1, characterized in that: It also includes an extrusion frame (9), the lower side of the side of the two side connection frames (2) close to each other is connected to the extrusion frame (9), and the extrusion frame (9) is used to support the arc-shaped support frame (5) below.

3. A pretreatment device for NdFeB magnets according to claim 1, characterized in that: The grinding mechanism comprises a sliding table (101), a connecting plate (102) and a grinding disc (103); the sliding tables (101) are slidably connected to the middle of both sides of the top of the workbench (1); the upper parts of the two sliding tables (101) are slidably connected to the connecting plates (102); and the grinding discs (103) are connected to the sides of the two connecting plates (102) that are close to each other.

4. A pretreatment device for NdFeB magnets according to claim 3, characterized in that: A U-shaped grinding groove is provided on one side of the two grinding discs (103) close to each other, and grinding chamfers (105) are provided on both the inner and outer sides of the grinding groove.

5. A pretreatment device for NdFeB magnets according to claim 3, characterized in that: The invention also comprises a transmission mechanism, the transmission mechanism comprising a connecting rod (111), a guide frame (112) and an extension shaft (113), the telescopic rods of the two electric push rods (3) are both connected to the connecting rod (111), the ends of the two connecting rods (111) that are away from each other are both connected to the extension shaft (113), the two sides of the sliding platform (101) are both connected to the guide frame (112), the guide frame (112) is provided with a guide groove (114), and the extension shaft (113) is located in the guide groove (114).

6. A pretreatment device for NdFeB magnets according to claim 3, characterized in that: The invention also comprises a material unloading mechanism, the material unloading mechanism comprising a material unloading frame (121), a cylindrical gear (122), a reduction motor (123), an arc-shaped bearing tray (124) and a belt transmission group (125). The material unloading frame (121) is connected between the tops of the two connecting frames (2). The lower part of the material unloading frame (121) is provided with openings on both sides. The two grinding discs (103) are respectively aligned with the two openings. The middle part of the material unloading frame (121) is rotatably connected with the arc-shaped bearing tray (124). Both sides of the material unloading frame (121) are rotatably connected with the cylindrical gear (122). The outer arc surface of the arc-shaped bearing tray (124) is provided with tooth grooves. The cylindrical gear (122) meshes with the tooth grooves. The belt transmission group (125) is installed between the rear sides of the two cylindrical gears (122). The reduction motor (123) is installed on the material unloading frame (121). The output shaft of the reduction motor (123) is connected to one of the cylindrical gears (122).

7. A pretreatment device for NdFeB magnets according to claim 1, characterized in that: It also includes a buffer mechanism, which includes a rotating shaft (131), a fourth elastic member (132) and a buffer block (133). The two sides of the discharge port are rotatably connected to the rotating shaft (131), two fourth elastic members (132) are connected between the rotating shaft (131) and the discharge port, and a plurality of buffer blocks (133) are evenly spaced and connected to the rotating shaft (131).

8. A pretreatment device for NdFeB magnets according to claim 1, characterized in that: It also comprises a collecting frame (141) and a screen (142); the collecting frame (141) is arranged in the middle of the lower part of the workbench (1); an outlet is arranged on one side of the collecting frame (141); an inclined screen (142) is arranged in the collecting frame (141); and the collecting frame (141) is located below the discharge port.

Images