Continuous automatic surface treatment equipment for sintered neodymium-iron-boron magnet

Abstract

The invention belongs to the technical field of intelligent heat treatment production lines, and discloses continuous automatic surface treatment equipment for sintered neodymium-iron-boron magnets, which comprises a pool changing arm assembly, and the pool changing arm assembly is provided with a flow guide roller assembly for carrying out annular stirring and transverse flow guide on a surface treatment liquid. According to the invention, synchronous reciprocating alternate rotation is formed between the two clamping rollers, and at the moment, the sintered neodymium-iron-boron magnet forms a dynamic displacement structure of advancing and retreating actions between the two clamping rollers, so that dynamic clamping and dynamic position adjustment of the sintered neodymium-iron-boron magnet are realized through the mode; the surface of the sintered neodymium-iron-boron magnet is subjected to surface immersion treatment, leakage point treatment on the surface of the sintered neodymium-iron-boron magnet is avoided, meanwhile, dynamic surface immersion treatment of the sintered neodymium-iron-boron magnet in all pools is achieved through the dynamic action of the sintered neodymium-iron-boron magnet, manual carrying or re-clamping is not needed, material conveying is completed, and an uninterrupted technological process is formed.

Description

Technical Field

[0001] This invention belongs to the technical field of intelligent heat treatment production lines, specifically relating to a continuous automated surface treatment equipment for sintered NdFeB magnets. Background Technology

[0002] Sintered NdFeB magnets are currently the strongest permanent magnet materials, composed of neodymium, iron, and boron, and manufactured through powder metallurgy. However, sintered NdFeB magnets have poor temperature resistance and corrosion resistance; oxidation and corrosion can lead to a sharp decline in magnetic properties, structural disintegration, and loss of mechanical strength. Therefore, surface treatment is an indispensable and critical step in their production process. In industrial processes, this step is often integrated into a heat treatment or material processing production line.

[0003] Chinese patent CN213731266U discloses a quick clamping device for magnetic sheet processing, including a support mechanism, a transmission component fixed on the support mechanism, and a set of clamping components fixed on the transmission component. The support mechanism includes a first U-shaped plate, a hydraulic cylinder fixed on one surface of the first U-shaped plate, and a first fixed plate fixed on the top of the first U-shaped plate. The clamping components include a second fixed plate and a first handle. A first sliding groove is formed on the second fixed plate, and a slider is slidably fitted on the inner wall of the first sliding groove. By chamfering the second fixed plate and designing the first fixed plate as an "L" shape, the hydraulic cylinder pulls a set of clamping plates on the two second fixed plates to move and cooperate with the first fixed plate, thereby quickly completing the clamping of the magnetic sheet and greatly improving the efficiency of magnetic sheet clamping.

[0004] Chinese patent CN108247538B discloses a fixture for fixing rare earth sintered magnets, including a lower clamping body on which a magnet block is placed, an upper clamping body disposed on the magnet block, and a pressing unit for pressing the clamping body to apply pressure to the magnet block. The portion of the lower clamping body adjacent to the magnet block is provided with a generally horizontal channel to define an elastic cantilever. The magnet block is held between the clamping bodies by the repulsive force of the cantilever. The structure is simple, reliable, and easy to operate.

[0005] The aforementioned existing technologies are all suitable for clamping and fixing magnets, and their structures are simple and reliable. However, the clamping involved in the above-mentioned existing technologies is all static clamping. When sintered NdFeB magnets undergo surface treatment, electroplating is often performed. Before this, the surface of the NdFeB magnets must be degreased, acid-washed, and water-washed. Degreasing, acid washing, and water washing are to remove oil stains or oxide layers from the surface of the sintered NdFeB magnets. In actual processing, the above steps involve passing the sintered NdFeB magnets through a degreasing tank, an acid washing tank, a water washing tank, and an electroplating tank in sequence. If the static clamping method in the above-mentioned existing technologies is used, although the structure is simple, this clamping is fixed (i.e., static surface treatment), which will lead to the problem of missed treatment of the clamping position of the sintered NdFeB magnets in the above-mentioned surface treatment process. Therefore, it is necessary to solve the above problems. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a continuous automated surface treatment device for sintered NdFeB magnets, featuring dynamic clamping and dynamic processing.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a continuous automated surface treatment device for sintered NdFeB magnets, comprising a tank changing arm assembly, wherein a guide roller assembly is provided on the tank changing arm assembly for circumferentially agitating and laterally guiding the surface treatment liquid, and multiple sets of magnet clamping assemblies are provided on the guide roller assembly for clamping the sintered NdFeB magnets. In magnet loading and unloading mode, the sintered NdFeB magnets are sequentially and circumferentially clamped on the multiple sets of magnet clamping assemblies on the guide roller assembly through insertion and extraction actions. During magnet surface treatment, a dynamic follow-up drive module is provided between the tank changing arm assembly, the guide roller assembly, and the magnet clamping assemblies, thereby realizing dynamic clamping and dynamic surface treatment of the sintered NdFeB magnets through the dynamic follow-up drive module.

[0008] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the tank-changing arm assembly includes a mounting base, a hydraulic cylinder is fixedly mounted on the mounting base, an arm seat is fixedly mounted at the bottom of the hydraulic cylinder, a drive motor and an arm ring are fixedly mounted at one end of the arm seat, a drive paddle with a first bevel gear is mounted on the output shaft of the drive motor, and an auxiliary bevel gear is fixedly mounted at one end of the arm ring.

[0009] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the guide roller assembly includes a guide roller platform. A tube shaft with a second bevel gear is fixedly installed on the top of the guide roller platform, and a guide groove communicating with the tube shaft is provided inside the center of the guide roller platform. Multiple slots are provided on the edge of the guide roller platform, and the slots are connected to the guide groove through guide ports. An inner groove with a vertical groove is provided inside the top body of the guide roller platform, and a horizontal seat groove with a tension spring is provided on the top body of the guide roller platform. A tension slider is slidably arranged inside the horizontal seat groove, and a tension roller is rotatably arranged on the tension slider.

[0010] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the magnet roller clamping assembly includes an intermediate gear, with a first toothed arm and a second toothed arm meshing on both sides of the intermediate gear. The bottom of each of the first and second toothed arms is respectively fixedly provided with an inner slider via a support rod. A clamping shaft is rotatably provided on each of the two inner sliders, and a tightening spring is fixedly provided against the back of the inner slider. A clamping roller is fixedly provided at the bottom of the clamping shaft, and a support roller is rotatably provided at the bottom of the clamping shaft.

[0011] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the dynamic follow-up drive module includes an inner rail ring, an outer rail ring, a second pulley, a first pulley, a third pulley, and a fourth pulley. The inner wall of the outer rail ring is fixedly provided with multiple segments of second toothed rails at intervals, and the outer wall of the inner rail ring is fixedly provided with multiple segments of first toothed rails at intervals. The second pulley and the first pulley are rotatably mounted on the top surface of the guide roller platform. A traveling gear is fixedly mounted on the top of the second pulley. A belt is sleeved between the first pulley and the second pulley. The third pulley and the fourth pulley are respectively fixed to the top of two clamping shafts.

[0012] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, both the inner and outer rail rings are fixed to the arm body on the bottom end face of the arm seat by a support plate, and a circumferential meshing space for a traveling gear is formed between the inner and outer rail rings.

[0013] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the tube shaft is rotatably mounted on the arm ring, the second bevel gear is positioned opposite the first bevel gear, the top of the auxiliary bevel gear meshes with the first bevel gear, and the bottom of the auxiliary bevel gear meshes with the second bevel gear.

[0014] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, two clamping shafts on the magnet roller clamping assembly reciprocate within a vertical groove. An inner groove for sliding two inner sliders is provided in the guide roller platform in the middle of the vertical groove. The two ends of the clamping spring are respectively fixed to the inner groove and the inner slider. The top of the intermediate gear is rotatably mounted at the top of the inner groove.

[0015] In a preferred embodiment of a continuous automated surface treatment device for sintered NdFeB magnets, the drive paddle rotates within a guide groove, the belt is fitted onto a first pulley, a second pulley, and a third pulley, and the outer side of the belt abuts against a fourth pulley, while the tensioning roller on the tensioning slider abuts against the inner belt body.

[0016] In a preferred embodiment of a continuous automated surface treatment equipment for sintered NdFeB magnets, the mounting base is fixed to an existing traveling platform by bolts. When the traveling platform drives the pool changing arm assembly to travel and change pools, the hydraulic cylinder drives the guide roller assembly on the arm base to descend into the pool and rise out of the pool.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention uses a magnet roller clamping assembly to clamp the sintered NdFeB magnets around the edge of the guide roller assembly. The two clamping rollers form a centering roller clamping structure for the sintered NdFeB magnets. At the same time, the elastic push of the tightening spring realizes the elastic contact roller clamping of the sintered NdFeB magnets, realizing the centering roller clamping of sintered NdFeB magnets of different thicknesses. Through the insertion and removal action, multiple sintered NdFeB magnets can be quickly and automatically loaded and unloaded on the guide roller assembly.

[0019] 2. This invention achieves the flow of surface treatment liquid by driving the paddle to rotate in the guide channel, that is, to achieve the lateral flow of treatment liquid in the pool. The rotation of the guide roller table drives the agitation of surface treatment liquid in the pool, thereby achieving the agitation of surface treatment liquid. The treatment liquid of this invention is in dynamic flow, thereby forming dynamic immersion of sintered NdFeB magnets.

[0020] 3. In this invention, the two clamping rollers rotate synchronously in a reciprocating alternating manner. At this time, the sintered NdFeB magnet forms a dynamic displacement structure with forward and backward movements between the two clamping rollers. In this way, dynamic clamping and dynamic position adjustment of the sintered NdFeB magnet are achieved, avoiding the treatment of leaks on the surface of the sintered NdFeB magnet. At the same time, through the dynamic movement of the sintered NdFeB magnet, dynamic surface immersion treatment of the sintered NdFeB magnet in each pool is achieved, eliminating the need for manual handling or re-clamping, completing material conveying, and forming an uninterrupted process flow. Attached Figure Description

[0021] Figure 1This is a perspective view of the present invention;

[0022] Figure 2 This is a perspective view of the invention from another angle;

[0023] Figure 3 This is a perspective view of the pool-changing arm assembly of the present invention;

[0024] Figure 4 This is a perspective view of the guide roller assembly of the present invention;

[0025] Figure 5 This is a perspective view of the guide roller assembly of the present invention from another angle;

[0026] Figure 6 This is a perspective view of the magnet roller clamp assembly of the present invention;

[0027] Figure 7 This is a perspective view of the dynamic follow-up drive module of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 100, Pool changing arm assembly; 101, Mounting base; 102, Hydraulic cylinder; 103, Arm seat; 104, Drive motor; 105, First bevel gear; 106, Auxiliary bevel gear; 107, Arm ring; 108, Drive paddle; 109, Outer rail ring; 110, Inner rail ring; 111, First gear rail; 112, Second gear rail; 200, Guide roller assembly; 201, Guide roller platform; 202, Slot; 203, Horizontal seat slot; 204, Tension spring; 205, Vertical slot; 206, Tension slider; 207, Pull... 208. Tightening roller; 209. First pulley; 210. Belt; 211. Second pulley; 212. Traveling gear; 213. Second bevel gear; 214. Tube shaft; 215. Flow guide port; 300. Flow guide groove; 301. Magnetic roller clamp assembly; 302. Intermediate gear; 303. Third pulley; 304. First toothed arm; 305. Fourth pulley; 306. Clamping shaft; 307. Clamping roller; 308. Support roller; 309. Inner slider; 310. Second toothed arm; 400. Top spring; 400. Sintered NdFeB magnet. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-7As shown, the present invention provides a continuous automated surface treatment device for sintered NdFeB magnets, including a tank changing arm assembly 100. The tank changing arm assembly 100 is provided with a guide roller assembly 200 for circumferentially agitating and laterally guiding the surface treatment liquid. The guide roller assembly 200 is provided with multiple sets of magnet clamping assemblies 300 for clamping sintered NdFeB magnets 400. In the magnet loading and unloading mode, the sintered NdFeB magnets 400 are sequentially and circumferentially clamped on the multiple sets of magnet clamping assemblies 300 on the guide roller assembly 200 through insertion and extraction actions. During the surface treatment of the magnets, a dynamic follow-up drive module is provided between the tank changing arm assembly 100, the guide roller assembly 200, and the magnet clamping assemblies 300. The dynamic follow-up drive module realizes the dynamic clamping and dynamic surface treatment of the sintered NdFeB magnets 400.

[0031] In a preferred embodiment, please refer to Figure 3 The pool changing arm assembly 100 includes a mounting base 101, a hydraulic cylinder 102 fixedly mounted on the mounting base 101, an arm seat 103 fixedly mounted at the bottom of the hydraulic cylinder 102, a drive motor 104 and an arm ring 107 fixedly mounted at one end of the arm seat 103, a drive paddle 108 with a first bevel gear 105 mounted on the output shaft of the drive motor 104, and an auxiliary bevel gear 106 fixedly mounted at one end of the arm ring 107.

[0032] Secondly, please refer to again Figures 1-3 The mounting base 101 is fixed to the existing traveling platform (the traveling platform is existing technology and will not be described in detail). When the traveling platform drives the pool changing arm assembly 100 to move and change pools, the hydraulic cylinder 102 drives the guide roller assembly 200 on the arm seat 103 to descend into the pool and rise out of the pool. In this way, it is convenient to change pools between different surface treatment pools, and it is also convenient to immerse and exit the pools in different pools. The process is completed automatically without the need for operator intervention.

[0033] In a preferred embodiment, please refer to Figure 4 and Figure 5 The guide roller assembly 200 includes a guide roller platform 201. A tube shaft 213 with a second bevel gear 212 is fixedly installed on the top of the guide roller platform 201. A guide groove 215 communicating with the tube shaft 213 is provided inside the center of the guide roller platform 201. Multiple slots 202 are opened on the edge of the guide roller platform 201. The slots 202 are connected to the guide groove 215 through the guide port 214. An inner groove with a vertical groove 205 is opened inside the top platform of the guide roller platform 201. A horizontal seat groove 203 with a tension spring 204 is opened on the top platform of the guide roller platform 201. A tension slider 206 is slidably arranged inside the horizontal seat groove 203. A tension roller 207 is rotatably arranged on the tension slider 206.

[0034] In this embodiment, the tube shaft 213 is rotatably mounted on the arm ring 107, and the second bevel gear 212 is positioned opposite to the first bevel gear 105.

[0035] Secondly, please refer to again Figures 1-5 The top of the auxiliary bevel gear 106 meshes with the first bevel gear 105, and the bottom of the auxiliary bevel gear 106 meshes with the second bevel gear 212. The drive paddle 108 rotates in the guide channel 215. In this way, the drive paddle 108 and the guide roller table 201 rotate synchronously, and the rotation is relatively opposite. By rotating the drive paddle 108 in the guide channel 215, the surface treatment liquid is guided. That is, the treatment liquid in the pool is drawn into the guide channel 215 through the guide port 214 and discharged from the bottom of the guide channel 215.

[0036] The surface treatment liquid in the pool is stirred by the rotation of the guide roller table 201, thereby agitating the surface treatment liquid and making it dynamically flowing.

[0037] In a preferred embodiment, please refer to Figure 6 The magnet roller clamping assembly 300 includes an intermediate gear 301. A first toothed arm 303 and a second toothed arm 309 are meshed on both sides of the intermediate gear 301. An inner slider 308 is fixedly mounted on the bottom of the first toothed arm 303 and the second toothed arm 309 through a support rod. A clamping shaft 305 is rotatably mounted on each of the two inner sliders 308. A pressing spring 310 is fixedly mounted against the back of the inner slider 308. A clamping roller 306 is fixedly mounted on the bottom of the clamping shaft 305. A support roller 307 is rotatably mounted on the bottom of the clamping shaft 305. The support roller 307 provides support for the bottom of the sintered NdFeB magnet 400.

[0038] In this embodiment, the two clamping shafts 305 on the magnet roller clamp assembly 300 slide back and forth in the vertical groove 205. The guide roller platform 201 in the middle of the vertical groove 205 is provided with an inner groove for the two inner sliders 308 to slide. The two ends of the top spring 310 are respectively fixed on the inner groove and the inner sliders 308. The top of the intermediate gear 301 is rotatably disposed at the top of the inner groove.

[0039] Secondly, please refer to again Figure 6 Through the meshing transmission between the intermediate gear 301 and the second toothed arm 309 and the first toothed arm 303, a centering clamping structure is formed between the two inner sliders 308. That is, the two clamping rollers 306 form a centering roller clamping structure for the sintered NdFeB magnet 400. At the same time, through the elastic pushing of the top spring 310, the elastic abutment roller clamping of the sintered NdFeB magnet 400 is realized. In this way, the centering roller clamping of sintered NdFeB magnets 400 of different thicknesses is realized.

[0040] Secondly, please refer to the following as well. Figure 7The belt 209 is fitted onto the first pulley 208, the second pulley 210, and the third pulley 302, and the outer part of the belt 209 abuts against the fourth pulley 304. That is, the inner belt body of the belt 209 is fitted onto the third pulley 302, and the outer belt body of the belt 209 is fitted onto the fourth pulley 304. Through this structure, the two clamping rollers 306 are always in a reverse rotation structure, ensuring synchronous and effective transmission when the sintered NdFeB magnet 400 abuts on both sides.

[0041] In this embodiment, the tension roller 207 on the tension slider 206 abuts against the inner belt body of the belt 209. The tension spring 204 pulls the tension roller 207 on one end of the tension slider 206 tightly, and the tension roller 207 abuts against the inner belt body of the belt 209. In this way, the belt 209 is kept taut at all times.

[0042] In a preferred embodiment, please refer to Figure 7 The dynamic follow-up drive module includes an inner rail ring 110, an outer rail ring 109, a second pulley 210, a first pulley 208, a third pulley 302, and a fourth pulley 304. The inner wall of the outer rail ring 109 is fixedly provided with multiple segments of second toothed rails 112 at intervals, and the outer wall of the inner rail ring 110 is fixedly provided with multiple segments of first toothed rails 111 at intervals. The second pulley 210 and the first pulley 208 are rotatably mounted on the top surface of the guide roller platform 201. A traveling gear 211 is fixedly mounted on the top of the second pulley 210. A belt 209 is sleeved between the first pulley 208 and the second pulley 210. The third pulley 302 and the fourth pulley 304 are respectively fixed on the top of two clamping shafts 305.

[0043] In this embodiment, both the inner rail ring 110 and the outer rail ring 109 are fixed to the arm body on the bottom end face of the arm seat 103 by a support plate, and a circumferential meshing space for the traveling gear 211 is formed between the inner rail ring 110 and the outer rail ring 109.

[0044] The working principle of this invention is as follows: When this invention is used, the sintered NdFeB magnet 400 is clamped around the edge of the guide roller assembly 200 by the magnet roller clamping assembly 300. Two clamping rollers 306 are rotatably mounted on two inner sliders 308. The second toothed arm 309 and the first toothed arm 303 on the two inner sliders 308 respectively mesh with the intermediate gear 301. When the clamping spring 310 pushes the inner slider 308 to move inward, the intermediate gear 301 drives the movement between the second toothed arm 309 and the first toothed arm 303, causing the two inner sliders to move inward. The sliders 308 form a centering clamping structure, that is, the two clamping rollers 306 form a centering roller clamping structure for the sintered NdFeB magnets 400. At the same time, the elastic push of the top spring 310 realizes the elastic abutment roller clamping of the sintered NdFeB magnets 400. In this way, the centering roller clamping of sintered NdFeB magnets 400 of different thicknesses can be realized. When the sintered NdFeB magnets 400 are loaded and unloaded, multiple sintered NdFeB magnets 400 can be quickly loaded and unloaded on the guide roller assembly 200 by inserting and pulling.

[0045] Based on the above, after the feeding is completed, the hydraulic cylinder 102 drives the guide roller assembly 200 on the arm seat 103 to immerse in the bath, thereby placing the sintered NdFeB magnet 400 into different treatment baths. Immersion in different baths achieves different treatments such as degreasing, pickling, water washing, and coating. At this time, the drive motor 104 drives the drive paddle 108 to rotate. The drive paddle 108 rotates in the guide channel 215. Through the rotation of the drive paddle 108 in the guide channel 215, the surface treatment liquid is guided. That is, the treatment liquid in the bath is drawn into the guide channel 215 through the guide port 214 and flows out of the guide channel 215. 15. The bottom discharge achieves lateral flow of the treatment liquid in the pool. At the same time, when the drive paddle 108 rotates, the first bevel gear 105 on the drive paddle 108 drives the tube shaft 213 to rotate through the auxiliary bevel gear 106 and the second bevel gear 212. The rotation of the tube shaft 213 drives the guide roller table 201 to rotate in the pool. The rotation of the guide roller table 201 drives the surface treatment liquid in the pool to agitate. In this way, the surface treatment liquid is agitated and laterally guided, so that the treatment liquid is in dynamic flow, thereby forming dynamic immersion of the sintered NdFeB magnet 400.

[0046] Based on the above, when the guide roller platform 201 rotates on the arm seat 103, the traveling gear 211 at the top of the guide roller platform 201 rotates between the inner rail ring 110 and the outer rail ring 109. During the rotation, the traveling gear 211 continuously meshes with the first toothed rail 111 on the outer wall of the inner rail ring 110 and the second toothed rail 112 on the inner wall of the outer rail ring 109. At this time, the traveling gear 211 forms a reciprocating alternating rotation structure. Meanwhile, the second pulley 210 at the bottom of the traveling gear 211 drives the third pulley 302 and the fourth pulley 304 to rotate synchronously and alternately via the belt 209. The movement involves the two clamping rollers 306 rotating synchronously and alternately. During this movement, the sintered NdFeB magnet 400 forms a dynamic displacement structure with forward and backward motion between the two clamping rollers 306. In this way, the dynamic clamping and dynamic position adjustment of the sintered NdFeB magnet 400 are achieved, so that the clamping rollers 306 do not always clamp the sintered NdFeB magnet 400 at the same position, avoiding the leakage treatment on the surface of the sintered NdFeB magnet 400. At the same time, through the dynamic movement of the sintered NdFeB magnet 400, the dynamic surface immersion treatment of the sintered NdFeB magnet 400 in each pool is achieved.

[0047] Based on the above, when the distance between the two clamping rollers 306 changes, the belt 209 will automatically loosen. To ensure that the belt 209 remains taut at all times, the present invention uses a tension spring 204 to tighten the tension roller 207 on one end of the tensioning slider 206. The tension roller 207 abuts against the inner belt body of the belt 209. In this way, the belt 209 is kept taut at all times. Even when sintered NdFeB magnets 400 of different thicknesses are clamped between the two clamping rollers 306, the belt 209 remains taut at the third pulley 302 and the fourth pulley 306. The pulleys 304 are always kept taut. In order to ensure the stable transmission of the sintered NdFeB magnet 400 between the two clamping rollers 306, the two clamping rollers 306 must form a rotating structure in opposite directions. The inner belt body of the belt 209 is sleeved on the third pulley 302, and the outer belt body of the belt 209 is sleeved on the fourth pulley 304. Through this structure, the two clamping rollers 306 are always in a rotating structure in opposite directions, ensuring synchronous and effective transmission when the sintered NdFeB magnet 400 is in contact with both sides.

[0048] It should be emphasized that auxiliary rollers can be provided on one side of the clamping roller 306, that is, there are two contact rollers on both sides of the sintered NdFeB magnet 400. The purpose of this is to ensure that the two clamping rollers 306 have a good clamping force on both sides of the sintered NdFeB magnet 400. The embodiment described here is only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous automated surface treatment device for sintered NdFeB magnets, comprising a cell-changing arm assembly (100), characterized in that: The pool-changing arm assembly (100) is provided with a guide roller assembly (200) for circumferentially agitating and laterally guiding the surface treatment liquid. The guide roller assembly (200) is provided with multiple sets of magnet roller clamping assemblies (300) for clamping sintered NdFeB magnets (400). In the magnet loading and unloading mode, the sintered NdFeB magnets (400) are sequentially and circumferentially clamped on the multiple sets of magnet roller clamping assemblies (300) on the guide roller assembly (200) through insertion and extraction actions. When the magnet is surface treated, a dynamic follow-up drive module is provided between the pool-changing arm assembly (100), the guide roller assembly (200) and the magnet roller clamping assembly (300). The dynamic follow-up drive module realizes the dynamic clamping and dynamic surface treatment of the sintered NdFeB magnets (400).

2. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 1, characterized in that: The pool changing arm assembly (100) includes a mounting base (101), on which a hydraulic cylinder (102) is fixedly mounted. At the bottom of the hydraulic cylinder (102), an arm seat (103) is fixedly mounted. At one end of the arm seat (103), a drive motor (104) and an arm ring (107) are fixedly mounted. On the output shaft of the drive motor (104), a drive paddle (108) with a first bevel gear (105) is mounted. At one end of the arm ring (107), an auxiliary bevel gear (106) is fixedly mounted.

3. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 2, characterized in that: The guide roller assembly (200) includes a guide roller platform (201). A tube shaft (213) with a second bevel gear (212) is fixedly installed on the top of the guide roller platform (201). A guide groove (215) communicating with the tube shaft (213) is provided inside the center of the guide roller platform (201). Multiple slots (202) are provided on the edge of the guide roller platform (201). The slots (202) are connected to the guide groove (215) through the guide port (214). An inner groove with a vertical groove (205) is provided inside the top platform of the guide roller platform (201). A horizontal seat groove (203) with a tension spring (204) is provided on the top platform of the guide roller platform (201). A tension slider (206) is slidably installed inside the horizontal seat groove (203). A tension roller (207) is rotatably installed on the tension slider (206).

4. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 3, characterized in that: The magnet roller clamp assembly (300) includes an intermediate gear (301), on both sides of which a first toothed arm (303) and a second toothed arm (309) are meshed. The bottom of the first toothed arm (303) and the second toothed arm (309) are respectively fixedly provided with an inner slider (308) by a support rod. A clamping shaft (305) is rotatably provided on each of the two inner sliders (308), and a pressing spring (310) is fixedly provided against the back of the inner slider (308). A clamping roller (306) is fixedly provided at the bottom of the clamping shaft (305), and a support roller (307) is rotatably provided at the bottom of the clamping shaft (305).

5. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 4, characterized in that: The dynamic follow-up drive module includes an inner rail ring (110), an outer rail ring (109), a second pulley (210), a first pulley (208), a third pulley (302), and a fourth pulley (304). The inner wall of the outer rail ring (109) is fixedly provided with multiple segments of second toothed rails (112) at intervals. The outer wall of the inner rail ring (110) is fixedly provided with multiple segments of first toothed rails (111) at intervals. The second pulley (210) and the first pulley (208) are rotatably mounted on the top surface of the guide roller platform (201). A traveling gear (211) is fixedly mounted on the top of the second pulley (210). A belt (209) is sleeved between the first pulley (208) and the second pulley (210). The third pulley (302) and the fourth pulley (304) are respectively fixed on the top of two clamping shafts (305).

6. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 5, characterized in that: The inner rail ring (110) and the outer rail ring (109) are both fixed to the bottom end face of the arm body of the arm seat (103) by the support plate, and the inner rail ring (110) and the outer rail ring (109) form a circumferential meshing space for the traveling gear (211).

7. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 5, characterized in that: The tube shaft (213) is rotatably mounted on the arm ring (107). The second bevel gear (212) is positioned opposite the first bevel gear (105). The top of the auxiliary bevel gear (106) meshes with the first bevel gear (105), and the bottom of the auxiliary bevel gear (106) meshes with the second bevel gear (212).

8. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 5, characterized in that: The two clamping shafts (305) on the magnet roller clamp assembly (300) slide back and forth in the vertical groove (205). The guide roller platform (201) in the middle of the vertical groove (205) is provided with an inner groove for the sliding of two inner sliders (308). The two ends of the clamping spring (310) are respectively fixed on the inner groove and the inner slider (308). The top of the intermediate gear (301) is rotatably set at the top of the inner groove.

9. The continuous automated surface treatment equipment for sintered NdFeB magnets according to claim 5, characterized in that: The drive paddle (108) rotates in the guide groove (215), the belt (209) is sleeved on the first pulley (208), the second pulley (210) and the third pulley (302), and the outside of the belt (209) abuts against the fourth pulley (304), and the tension roller (207) on the tension slider (206) abuts against the inner belt body of the belt (209).

10. A continuous automated surface treatment device for sintered NdFeB magnets according to claim 5, characterized in that: The mounting base (101) is fixed to the existing walking platform by bolts. When the walking platform drives the pool changing arm assembly (100) to move and change pools, the hydraulic cylinder (102) drives the guide roller assembly (200) on the arm seat (103) to descend into the pool and rise out of the pool.

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