A bonding magnet surface coating device

Abstract

The present invention relates to the field of magnet electrophoresis technology, and specifically discloses a bonded magnet surface coating device, including an electrophoresis tank box, on which a lifting component is provided, the lifting component including a first bracket and a second bracket, and a plurality of multi-section rods are provided between the first bracket and the second bracket; a plurality of protective components are provided at the bottom of the multi-section rods, and the protective components are responsible for covering part of the outer wall of the workpiece so that the remaining part of the workpiece is exposed to the paint liquid; a replacement component is provided under each row of protective components, and the replacement component includes a transmission shaft rotatably provided on the first bracket. The bonded magnet surface coating device provided by the present invention replaces the traditional clamping mechanism with a protective component, and the electrophoretic area can be rotated to the inside of the protective component by cooperating with the replacement component, which not only realizes that each area can be coated with a layer of paint film, but also ensures that the previously coated area is no longer coated, and further realizes that the paint film is distributed in each area of ​​the workpiece with a consistent thickness.

Description

Technical Field

[0001] The invention relates to the technical field of magnet electrophoresis, and in particular to a bonding magnet surface coating device. Background Art

[0002] Bonded magnets are magnets made by mixing magnetic powder with certain permanent magnetic properties with a certain proportion of binder and forming them according to a certain molding process; there are various methods for forming bonded magnets, including compression molding, injection molding, extrusion molding and calendering molding. To improve the corrosion resistance and mechanical strength of the magnets after molding, a layer of electrophoretic coating can be added through electrophoresis technology to extend its service life.

[0003] In the prior art, multiple workpieces are clamped on multiple conductive rods, which are then transported to an electrophoretic tank through multiple cylinders. An electric current is added to perform electrophoresis on the workpieces to coat them with a layer of electrophoretic coating. However, this method has a small uncoated area, making it difficult to coat the entire area of ​​the workpiece. Moreover, since the thickness of the electrophoretic coating is positively correlated with the electrophoretic time, when the clamping area is replaced for a second electrophoresis, some areas that have been coated with the electrophoretic coating are electrophoresed again, resulting in a thicker coating, which ultimately makes the overall electrophoretic coating thickness of the workpiece inconsistent and flawed. Summary of the invention

[0004] The purpose of the present invention is to provide a bonded magnet surface coating device to solve the above-mentioned shortcomings in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A bonding magnet surface coating device includes an electrophoresis tank box, the electrophoresis tank box is provided with a lifting component, the lifting component includes a first bracket and a second bracket, a plurality of multi-section rods are provided between the first bracket and the second bracket; a plurality of protective components are provided at the bottom of the multi-section rods, the protective components are responsible for covering part of the outer wall of the workpiece so that the remaining part of the workpiece is exposed to the paint liquid; a replacement component is provided under each row of the protective components, the replacement component includes a transmission shaft rotatably arranged on the first bracket, the side end of the transmission shaft is detachably connected to a transmission roller, the outside of the transmission roller is provided with a toggle rod, the toggle rod starts to rotate to a set angle when the set time arrives, so that the covered part of the workpiece is exposed to the paint liquid, and the part that has been electrophoresed is covered by the protective component and is no longer electrophoresed.

[0007] Furthermore, a plurality of connecting rods are arranged between the first bracket and the second bracket, and an adjacent pair of connecting rods are mutually clamped, the connecting rod close to the first bracket is mutually clamped with the first bracket, and the connecting rod close to the second bracket is mutually clamped with the second bracket.

[0008] Further, the protective component includes a first hollow sleeve and a second hollow sleeve, the first hollow sleeve and the second hollow sleeve are clamped with each other, a connecting block is fixedly connected between the first hollow sleeve and the second hollow sleeve and the multi-section rod, a first support rod is fixedly connected between the connecting rod close to the first hollow sleeve and the first hollow sleeve, a second support rod is fixedly connected between the connecting rod close to the second hollow sleeve and the second hollow sleeve, and an elastic conductive part is provided on the inner wall of the first hollow sleeve and the second hollow sleeve.

[0009] Furthermore, the replacement component also includes a movable shaft slidably connected to the inner wall of the transmission roller, a plurality of guide holes are opened on the movable shaft, the toggle rod slides inside the guide hole, the outer end of the movable shaft is fixedly sleeved with an extrusion sleeve, the bottom of the toggle rod is fixedly connected with a ramp block, the ramp block and the extrusion sleeve are in conflict with each other, and a reset member is arranged between the outer wall of the toggle rod and the inner wall of the transmission roller.

[0010] Furthermore, a transmission component is also provided on the exchange component, and the transmission component includes a reduction motor fixedly connected to the first bracket, a first pulley is fixedly sleeved on the output end of the reduction motor, a second pulley is fixedly sleeved on the outer wall of the transmission shaft close to the reduction motor, and a transmission belt is connected to the first pulley and the second pulley.

[0011] Furthermore, a driving component is arranged in the second bracket, and the driving component comprises a pressing rod, a bottom of the pressing rod is fixedly connected to a first arc block, and an end of the movable shaft is rotatably connected to a second arc block.

[0012] Furthermore, the multi-section rod comprises a plurality of outer rods and inner rods, a pair of adjacent outer rods have side ends with sliding grooves, the inner rods slide inside the sliding grooves, and the connecting blocks are fixedly connected to the adjacent outer rods.

[0013] Furthermore, an unlocking component is provided at the side end of the first bracket, and the unlocking component includes a push rod slidably connected to the side end of the first bracket, a plurality of triangular blocks are fixedly connected to the push rod, and an oblique groove is provided on the outer rod near the triangular block.

[0014] Furthermore, sealing members are provided at the ends of the first hollow sleeve and the second hollow sleeve, and the sealing members include a pair of sealing sleeves, and the sealing sleeves are close to each other to prevent liquid particles from entering the first hollow sleeve and the second hollow sleeve.

[0015] In the above technical solution, the bonded magnet surface coating device provided by the present invention has the following beneficial effects:

[0016] This device replaces the traditional clamping mechanism with a protective component. By cooperating with the replacement component, the workpiece can be intermittently rotated 180 degrees, and the electrophoretic area can be rotated to the inside of the first hollow sleeve and the second hollow sleeve. The sealing component can prevent liquid particles from entering the first hollow sleeve and the second hollow sleeve, which not only ensures that each area of ​​the workpiece can be coated with a layer of paint film, but also ensures that the previously coated area will not be coated again, further ensuring that the paint liquid can be evenly distributed in each area of ​​the workpiece and the paint film thickness is consistent.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall external structure provided in Embodiment 1 of the present invention;

[0021] Figure 2 A schematic diagram of the internal structure of an electric pool box provided in Embodiment 1 of the present invention;

[0022] Figure 3 A schematic diagram of the external structure of a protective component provided in Embodiment 1 of the present invention;

[0023] Figure 4 A schematic diagram of the structure of the protective component in the separated state provided in the first embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the side structure of the second hollow sleeve provided in the first embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the internal structure of the first bracket and the second bracket provided in the first embodiment of the present invention;

[0026] Figure 7 The first embodiment of the present invention provides Figure 6 A schematic diagram of the enlarged structure at point A;

[0027] Figure 8 The first embodiment of the present invention provides Figure 6 A schematic diagram of the enlarged structure at B;

[0028] Fig. 9 A schematic diagram of a cross-sectional front view of the structure of a transmission roller provided in the first embodiment of the present invention;

[0029] Fig.10 The first embodiment of the present invention provides Fig. 9 A schematic diagram of the enlarged structure at C;

[0030] Fig.11 A schematic diagram of the structure of the extrusion sleeve and the ramp block being separated provided in the first embodiment of the present invention;

[0031] Fig.12 This is a schematic diagram of the overall external structure provided in Embodiment 2 of the present invention.

[0032] Description of reference numerals:

[0033] 1. Electric pool box; 2. Lifting component; 21. First bracket; 22. Second bracket; 23. Multi-section rod; 231. Outer rod; 232. Inner rod; 24. Connecting rod; 3. Protective component; 31. First hollow sleeve; 32. Second hollow sleeve; 33. Connecting block; 34. First support rod; 35. Second support rod; 36. Elastic conductive member; 4. Replacement component; 41. Moving shaft; 43. Extrusion sleeve; 44. Inclined block; 45. Transmitter Drive shaft; 46, transmission roller; 47, toggle rod; 48, slide rod; 5, transmission component; 51, reduction motor; 52, first pulley; 53, second pulley; 54, transmission belt; 6, driving component; 61, pressing rod; 62, first arc block; 63, second arc block; 64, small cylinder; 7, unlocking component; 71, push rod; 72, triangular block; 73, inclined groove; 74, push plate; 75, connecting plate; 8, sealing. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. Embodiment 1

[0035] See also Figure 1-2 , Fig. 9 A bonding magnet surface coating device includes an electric pool box 1, a holding component 2 is provided on the electric pool box 1, the holding component 2 includes a first bracket 21 and a second bracket 22, and a plurality of multi-section rods 23 are provided between the first bracket 21 and the second bracket 22;

[0036] A plurality of protective components 3 are provided at the bottom of the multi-section rod 23, and the protective components 3 are responsible for covering a part of the outer wall of the workpiece so that the remaining part of the workpiece is exposed to the paint liquid;

[0037] A replacement component 4 is provided under each row of protective components 3. The replacement component 4 includes a transmission shaft 45 rotatably arranged on the first bracket 21. The side end of the transmission shaft 45 is detachably connected to a transmission roller 46. A toggle rod 47 is provided on the outside of the transmission roller 46. The toggle rod 47 starts to rotate to a set angle when the set time is reached, so that the coated part of the workpiece is exposed to the paint liquid, while the part that has been electrophoresed is covered by the protective component 3 and no longer electrophoresed.

[0038] Specifically, in this embodiment, three replacement components 4 are provided, and the specific working process will be described with reference to these data later.

[0039] See also Figure 3 In the figure, M refers to the workpiece, and a plurality of connecting rods 24 are arranged between the first bracket 21 and the second bracket 22. An adjacent pair of connecting rods 24 are mutually clamped, the connecting rod 24 close to the first bracket 21 is mutually clamped with the first bracket 21, and the connecting rod 24 close to the second bracket 22 is mutually clamped with the second bracket 22.

[0040] Specifically, the device can also be provided with a moving mechanism to lift and move the first bracket 21 and the second bracket 22 to the electric pool box 1, and then all the workpieces are placed in the electric pool box 1. The electric pool box 1 is provided with paint liquid, and it is introduced into electricity. At the same time, the workpiece is also conductive to form a circuit loop, and the purpose of uniformly depositing the paint on the surface of the magnet is achieved by forming an electric current on the workpiece.

[0041] This device replaces the traditional clamping mechanism with a protective component 3. By cooperating with the replacement component 4, the electrophoretic area can be rotated to the inside of the protective component 3, which not only ensures that each area can be coated with a layer of paint film, but also ensures that the previously coated area will not be coated further, further realizing that the paint film is distributed in each area of ​​the workpiece with consistent thickness.

[0042] See also Figure 3-5 In an embodiment further provided by the present invention, the protective component 3 includes a first hollow sleeve 31 and a second hollow sleeve 32, the first hollow sleeve 31 and the second hollow sleeve 32 are clamped with each other, a connecting block 33 is fixedly connected between the first hollow sleeve 31 and the second hollow sleeve 32 and the multi-section rod 23, a first support rod 34 is fixedly connected between the connecting rod 24 near the first hollow sleeve 31 and the first hollow sleeve 31, a second support rod 35 is fixedly connected between the connecting rod 24 near the second hollow sleeve 32 and the second hollow sleeve 32, and an elastic conductive member 36 is provided on the inner walls of the first hollow sleeve 31 and the second hollow sleeve 32.

[0043] Specifically, the elastic conductive member 36 is an elastic sheet of copper material, which supports the workpiece and prevents the workpiece from moving upward during subsequent rotation. At the same time, the connecting rod 24, the first support rod 34, the second support rod 35, the first hollow sleeve 31 and the second hollow sleeve 32 are all made of conductive materials. During actual electrophoresis, the electrode is connected to the connecting rod 24 at the end so that current passes through multiple connecting rods 24, thereby allowing each workpiece to be energized.

[0044] See also Figure 3 The ends of the first hollow sleeve 31 and the second hollow sleeve 32 are provided with sealing members 8 , and the sealing members 8 include a pair of sealing sleeves, which are close to each other and are used to prevent liquid particles from entering the first hollow sleeve 31 and the second hollow sleeve 32 .

[0045] The sealing sleeve is made of elastic plastic material and has an anti-stick coating sprayed on its surface. The function of the sealing sleeve is to seal the pores at the ends of the first hollow sleeve 31 and the second hollow sleeve 32 when the first hollow sleeve 31 and the second hollow sleeve 32 are clamped together, thereby effectively preventing particles from entering the first hollow sleeve 31 and the second hollow sleeve 32 and continuing to adhere to the workpiece area that has been electrophoresed.

[0046] See also Figure 9-11 In an embodiment further provided by the present invention, the replacement component 4 also includes a moving shaft 41 slidably connected to the inner wall of the transmission roller 46, a plurality of guide holes are opened on the moving shaft 41, and a toggle rod 47 slides inside the guide hole. The outer end of the moving shaft 41 is fixedly sleeved with an extrusion sleeve 43, and the bottom of the toggle rod 47 is fixedly connected with an inclined block 44, and the inclined block 44 and the extrusion sleeve 43 are in conflict with each other. A reset piece is arranged between the outer wall of the toggle rod 47 and the inner wall of the transmission roller 46, and the reset piece is an elastic rope; and elastic silicone is arranged at the end of the toggle rod 47.

[0047] See also Figure 6-7 A transmission component 5 is also provided on the exchange component 4, and the transmission component 5 includes a reduction motor 51 fixedly connected to the first bracket 21, a first pulley 52 is fixedly sleeved on the output end of the reduction motor 51, and a second pulley 53 is fixedly sleeved on the outer wall of the transmission shaft 45 close to the reduction motor 51, and a transmission belt 54 is connected to the first pulley 52 and the second pulley 53 for transmission.

[0048] Specifically, since three replacement components 4 are provided in this embodiment, it means that there are three transmission shafts 45, and the transmission method of the remaining pair of transmission shafts 45 is the same as the above transmission method. For example: the outer end of the middle transmission shaft 45 is also fixedly sleeved with a second pulley 53, and the outer end of the upper transmission shaft 45 is also fixedly sleeved with a first pulley 52. ​​The first pulley 52 and the second pulley 53 are also externally connected with a transmission belt 54, and the bottom transmission shaft 45 is the same as above.

[0049] See also Figure 6 and Figure 8 A driving component 6 is arranged in the second bracket 22, and the driving component 6 includes a pressing rod 61. The bottom of the pressing rod 61 is fixedly connected to the first arc block 62, and the end of the movable shaft 41 is rotatably connected to the second arc block 63. A pair of limiting grooves are opened on the inner wall of the second bracket, and the two ends of the second arc block 63 are fixedly connected to the limiting rods. The limiting rods slide inside the limiting grooves, which can effectively prevent the second arc block 63 from rotating. One end of the second movable shaft 41 movably passes through the transmission roller 46 and the transmission shaft 45, and then is connected to the second arc block 63.

[0050] Optionally, a small cylinder 64 is provided at the outer end of the pressing rod 61 , and the small cylinder 64 is electrically connected to a controller. The controller can not only control the extension and retraction of the small cylinder 64 , but also control the working time of the small cylinder 64 .

[0051] Each electrophoresis time is 1-5 minutes. When the set electrophoresis time is reached, the staff is required to change the position of the workpiece and push the pressing rod 61. The pressing rod 61 moves the three first arc blocks 62 downward, thereby simultaneously pushing the three second arc blocks 63 to move to the left, so that the moving shaft 41 also starts to move. During the movement, the moving shaft 41 will move with multiple extrusion sleeves 43. The extrusion sleeves 43 push the multiple inclined blocks 44 outward through their outer walls, thereby extending the multiple toggle rods 47 outward. At the same time, the reduction motor 51 has also started to start. The reduction motor 51 moves the first arc blocks 62 downward, thereby simultaneously pushing the three second arc blocks 63 to move to the left, thereby causing the moving shaft 41 to start to move. The first pulley 52, the second pulley 53 and the transmission belt 54 are driven step by step, and the three transmission shafts 45 and the transmission rollers 46 are slowly rotated, and finally the multiple toggle rods 47 are rotated; the toggle rods 47 start to rotate, and the elastic silicone at the outer end thereof is used to squeeze the workpiece, and the friction brought by the elastic force of the elastic silicone is used to start to toggle the workpiece to rotate. The transmission rollers 46 are set to rotate 3-10 circles, and the workpiece can be rotated 180 degrees, which can just rotate the coated area to the inside of the first hollow sleeve 31 and the second hollow sleeve 32, and the uncoated area is rotated out, and the second stage electrophoresis is started;

[0052] Compared with the traditional technology, the electrophoresis is divided into two times, which can not only electrophoretically process the un-electrophoretically processed area, so that the entire area of ​​the workpiece can be coated with a layer of paint film, but also because the first hollow sleeve 31 and the second hollow sleeve 32 and the seal 8 are provided, the already coated area can no longer be electrophoretically processed, and finally the thickness of the paint film coated on the outer wall of the workpiece is consistent, and the coating effect is better.

[0053] See also Figure 4 The multi-section rod 23 includes a plurality of outer rods 231 and inner rods 232 . A slide groove is provided at the side ends of an adjacent pair of outer rods 231 . The inner rods 232 slide inside the slide groove. The connecting block 33 is fixedly connected to the adjacent outer rods 231 .

[0054] A plurality of slide bars 48 are fixedly connected to the side ends of the transmission shaft 45, and a slide groove is provided at the side ends of the transmission roller 46, in which the slide bars 48 slide. When the multi-section rod 23 is unfolded, the slide bars 48 start to slide, causing the transmission shaft 45 to extend outward.

[0055] When the device is installing multiple workpieces, the workpieces can be arranged neatly first, and a U-shaped frame is set at the bottom of each workpiece. When electrophoresis is required, the first bracket 21 and the second bracket 22 are pulled apart, so that each adjacent first hollow sleeve 31 and second hollow sleeve 32 are separated along with each adjacent outer rod 231, leaving enough gap, and then each row of workpieces is aligned so that the workpiece is located between the first hollow sleeve 31 and the second hollow sleeve 32, and then the first bracket 21 and the second bracket 22 are pushed to make them close to each other, so that each first hollow sleeve 31 and the second hollow sleeve 32 are engaged with each other and clamp each workpiece, thereby completing the installation and clamping of the workpiece; finally, the device can be moved into the electrophoresis tank box 1 by the moving mechanism. Embodiment 2

[0056] See also Fig.12 The difference between the second embodiment and the first embodiment is that the following technical features are added: an unlocking component 7 is provided at the side end of the first bracket 21, and the unlocking component 7 includes a push rod 71 slidably connected to the side end of the first bracket 21, and a plurality of triangular blocks 72 are fixedly connected to the push rod 71, and an outer rod 231 is provided with an oblique groove 73 near the triangular block 72.

[0057] Specifically, a connecting plate 75 is fixedly connected between adjacent push rods 71, and a push plate 74 is fixedly connected to the top of the push rod 71. By pressing the push plate 74 hard, the three push rods 71 ​​can be moved, so that the triangular block 72 pushes the adjacent pair of outer rods 231 apart, thereby forcing the first hollow sleeve 31 and the second hollow sleeve 32 to separate, so that the sealing sleeve will also separate. At this time, the small cylinder 64 and the reduction motor 51 are driven to complete the rotation of the workpiece, and the friction of the rotation can be minimized.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bonded magnet surface coating device, comprising an electrostatic tank (1), characterized in that: The electric swimming pool box (1) is provided with a lifting component (2), the lifting component (2) comprising a first bracket (21) and a second bracket (22), and a plurality of multi-section rods (23) are provided between the first bracket (21) and the second bracket (22); A plurality of protective components (3) are arranged at the bottom of the multi-section rod (23), and the protective components (3) are responsible for covering a portion of the outer wall of the workpiece so that the remaining portion of the workpiece is exposed to the paint liquid; A replacement component (4) is provided below each row of the protective components (3), the replacement component (4) comprising a transmission shaft (45) rotatably provided on the first bracket (21), a side end of the transmission shaft (45) being detachably connected to a transmission roller (46), an external portion of the transmission roller (46) being provided with a toggle lever (47), the toggle lever (47) starting to rotate to a set angle when a set time is reached, so that the coated portion of the workpiece is exposed to the paint liquid, while the portion that has been electrophoresed is coated by the protective component (3) and no longer electrophoresed; A plurality of connecting rods (24) are further arranged between the first bracket (21) and the second bracket (22), and a pair of adjacent connecting rods (24) are mutually clamped, the connecting rod (24) close to the first bracket (21) is mutually clamped with the first bracket (21), and the connecting rod (24) close to the second bracket (22) is mutually clamped with the second bracket (22); The protective component (3) comprises a first hollow sleeve (31) and a second hollow sleeve (32), the first hollow sleeve (31) and the second hollow sleeve (32) being mutually clamped, a connecting block (33) being fixedly connected between the first hollow sleeve (31) and the second hollow sleeve (32) and the multi-section rod (23), a first supporting rod (34) being fixedly connected between the connecting rod (24) close to the first hollow sleeve (31) and the first hollow sleeve (31), a second supporting rod (35) being fixedly connected between the connecting rod (24) close to the second hollow sleeve (32) and the second hollow sleeve (32), and an elastic conductive member being arranged on the inner walls of the first hollow sleeve (31) and the second hollow sleeve (32); Sealing members (8) are provided at the ends of the first hollow sleeve (31) and the second hollow sleeve (32). The sealing member (8) comprises a pair of sealing sleeves, which are close to each other and are used to prevent liquid particles from entering the interior of the first hollow sleeve (31) and the second hollow sleeve (32).

2. The bonded magnet surface coating device according to claim 1, characterized in that: The exchange component (4) further comprises a movable shaft (41) slidably connected to the inner wall of the transmission roller (46); a plurality of guide holes are formed on the movable shaft (41); the toggle rod (47) slides inside the guide holes; an extrusion sleeve (43) is fixedly sleeved on the outer end of the movable shaft (41); a slope block (44) is fixedly connected to the bottom of the toggle rod (47); the slope block (44) and the extrusion sleeve (43) are in contact with each other; and a reset member is provided between the outer wall of the toggle rod (47) and the inner wall of the transmission roller (46).

3. The bonded magnet surface coating device according to claim 2, characterized in that: The exchange component (4) is also provided with a transmission component (5), the transmission component (5) comprising a reduction motor (51) fixedly connected to the first bracket (21), a first belt pulley (52) fixedly sleeved on the output end of the reduction motor (51), a second belt pulley (53) fixedly sleeved on the outer wall of the transmission shaft (45) close to the reduction motor (51), and a transmission belt (54) is transmission-connected to the first belt pulley (52) and the second belt pulley (53).

4. The bonded magnet surface coating device according to claim 3, characterized in that: A driving component (6) is arranged in the second bracket (22), and the driving component (6) comprises a pressing rod (61), the bottom of the pressing rod (61) is fixedly connected to a first arc block (62), and the end of the movable shaft (41) is rotatably connected to a second arc block (63).

5. The bonded magnet surface coating device according to claim 4, characterized in that: The multi-section rod (23) comprises a plurality of outer rods (231) and inner rods (232); a pair of adjacent outer rods (231) are provided with a slide groove at their side ends; the inner rods (232) slide inside the slide groove; and the connecting block (33) is fixedly connected to the adjacent outer rods (231).

6. The bonded magnet surface coating device according to claim 5, characterized in that: An unlocking component (7) is provided at the side end of the first bracket (21), and the unlocking component (7) comprises a push rod (71) slidably connected to the side end of the first bracket (21), a plurality of triangular blocks (72) are fixedly connected to the push rod (71), and an inclined groove (73) is formed on the outer rod (231) near the triangular block (72).

Images