A method and equipment for preparing composite coating on the surface of NdFeB magnet

Abstract

The present invention relates to the field of coating processing, and discloses a method for preparing a composite coating on the surface of a neodymium iron boron magnet, comprising the following steps: S1, placing a part into four roller assemblies arranged in a rhombus shape, wherein a spacing is provided between the top roller assembly and the bottom roller assembly; S2, driving the four roller assemblies to synchronously descend into an electroplating device through a control mechanism, and during the descent, the four roller assemblies are changed from being arranged in a rhombus shape to being arranged in a ring array; and also discloses a preparation device for a composite coating on the surface of a neodymium iron boron magnet. The present invention can leave a space between the top roller assembly and the bottom roller assembly through the cooperation between the roller assembly and the control mechanism, and can realize the effective support of the subsequent storage tool by cooperating with the roller assembly arranged in front and back in the middle, so as to facilitate the loading and unloading of the top roller assembly.

Description

Technical Field

[0001] The invention relates to the technical field of coating processing, and in particular to a method for preparing a composite coating on the surface of a neodymium iron boron magnet and equipment thereof. Background Art

[0002] Neodymium magnets, also known as NdFeB magnets, are the most commonly used rare earth magnets and are widely used in motors, sensors, traction machines, etc. In order to avoid corrosion damage to NdFeB, it is necessary to do protective treatment on the surface of the permanent magnet material when using it, such as electroplating with gold, nickel, zinc, tin and other materials to form a coating.

[0003] For example, Chinese patent publication number CN114481276A discloses an electroplating device and method for a surface corrosion-resistant double coating of a neodymium iron boron magnet, which includes an electroplating device body, an electroplating barrel and a motor pump group. An electrolyte tank is provided in the electroplating device body. The present invention enables the electrolyte in the electrolyte tank to contact the surface of the neodymium iron boron magnet to produce an anti-corrosion coating more quickly, thereby improving work efficiency. In addition, the configuration of a stirring rod and a rotating rod can not only stir the electrolyte more evenly.

[0004] When taking and placing parts from the multiple electroplating drums provided in the device, the top covers need to be removed and the parts are taken and placed one by one from one side, resulting in a heavy workload and low efficiency. At the same time, it is also impossible to quickly take and place the parts in the top electroplating drum, and there are certain limitations in use.

[0005] Therefore, it is necessary to provide a method for preparing a composite coating on the surface of a NdFeB magnet and an apparatus thereof to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a method and equipment for preparing a composite coating on the surface of a neodymium iron boron magnet, so as to solve the problems in the above-mentioned background technology that the top cover needs to be removed and placed in sequence from one side, resulting in a heavy workload and low efficiency, and it is also impossible to quickly take and place the parts in the top electroplating drum.

[0007] To achieve the above objectives, a coating preparation method and equipment are designed that can ensure electroplating efficiency and enable rapid placement of parts in multiple electroplating drums.

[0008] Based on the above ideas, the present invention provides the following technical solution: a method for preparing a composite coating on the surface of a NdFeB magnet, comprising the following steps:

[0009] S1, placing the parts into four roller assemblies arranged in a diamond shape, wherein a gap is provided between the top roller assembly and the lower roller assembly;

[0010] S2, driving the four roller assemblies to synchronously descend into the electroplating device through the control mechanism, and during the descent, the four roller assemblies are arranged from a diamond shape to a ring array;

[0011] S3. The four roller assemblies are driven by a control mechanism to rotate along the center of the array and rotate on their own to complete the coating electroplating in the electroplating device.

[0012] The present invention also provides the following technical solution: a preparation device for a composite coating on the surface of a neodymium iron boron magnet, comprising an electroplating device, on which are provided four roller assemblies for placing parts and arranged in a diamond shape, and a control mechanism for driving the four roller assemblies to rise and fall synchronously, the control mechanism comprising a rack fixedly connected to the electroplating device, a partition and a bracket for placing the four roller assemblies, and a driving member for driving the partition and the bracket to rise and fall synchronously, a moving assembly for placing the topmost roller assembly is formed between the partition and the bracket, and an adjusting assembly fixedly connected to the moving assembly and corresponding to the position of the rack is arranged inside the bracket; when the driving member is started, the four roller assemblies arranged in a diamond shape can be transformed into a circular array arrangement through the rack and the moving assembly, and the four roller assemblies can also be driven to rotate and rotate along the center of the array.

[0013] As a further solution of the present invention: the roller assembly includes a storage cylinder, the outer surface of the storage cylinder is provided with an openable and closable cover, both ends of the storage cylinder are fixedly installed with support rods, one side support rods on the three lower storage cylinders are rotatably connected to the partition, one side support rod on the top storage cylinder is rotatably connected to the moving assembly, the outer surfaces of the other side support rods on the four storage cylinders are coaxially transmitted with a first gear, and the surface of the bracket is fixedly installed with a gear column that is transmission-connected to the four first gears.

[0014] As a further solution of the present invention: the moving assembly includes two telescopic rods fixedly connected to the partition and the bracket respectively, the movable ends of the two telescopic rods are fixedly installed with side plates, a cross bar is fixedly installed between the two side plates, and the outer surface of the telescopic rod is sleeved with a first spring.

[0015] As a further solution of the present invention: the adjustment assembly includes a short rod rotatably installed in the bracket, a roller and a second gear corresponding to the position of the rack are fixedly installed on the outer surface of the short rod, a pull rope fixedly wound on the outer surface of the roller and fixedly connected to the upper side plate of the bracket, and a torsion spring is sleeved on the outer surface of the short rod; when the second gear rises and engages with the rack for transmission, it can drive the roller to rotate and release the pull rope, thereby driving the side plate on the bracket to move relatively away from the bracket.

[0016] As a further solution of the present invention: a placement groove is commonly formed on the surface of the bracket and the corresponding side plate, a ratchet ring is fixedly installed inside the placement groove, and a protective component that is movably engaged with the ratchet ring is commonly fixedly installed between the two support rods on which the first gear is installed and located in the middle position; when the two middle support rods are horizontal front and back, the protective component engages with the ratchet ring to support the two middle support rods.

[0017] As a further solution of the present invention: the protection component includes an arc frame rotatably connected to two corresponding support rods, and both sides of the outer surface of the arc frame are elastically connected with protrusions that movably engage with the ratchet ring through a second spring.

[0018] As a further solution of the present invention: the protrusion can approach or move away from the outer surface of the arc frame under the action of the second spring, and the arc frame is installed at the end of the corresponding support rod away from the storage tube to form a misalignment.

[0019] As a further solution of the present invention: the first gear and the corresponding support rod are assembled in a key shaft type, and a key groove is provided on the surface of the first gear, and a sliding component corresponding to the position of the key groove is provided on the outer surface of the corresponding support rod, and a sliding groove for sliding cooperation of the sliding component and two clamping grooves corresponding to the position of the sliding component are provided on the outer surface of the corresponding support rod, and one of the clamping grooves is in a clamping state with the sliding component.

[0020] As a further solution of the present invention: the driving component includes two cylinders fixedly connected to the electroplating device and a motor fixedly installed on the partition, and the output ends of the two cylinders are fixedly connected to the bracket and the motor respectively.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: through the cooperation between the roller assembly and the control mechanism, etc., effective electroplating of a larger number of parts can be achieved at one time, thereby greatly improving the electroplating efficiency, and the revolution and rotation of the roller assembly can ensure uniform mixing, thereby ensuring the electroplating quality of the parts; on this basis, space can be left between the top roller assembly and the bottom roller assembly, and the cooperation with the front-to-back arranged roller assemblies in the middle can achieve effective support for subsequent storage tools, so as to facilitate the loading and unloading of the top roller assembly, which can solve the pain point of the top roller assembly in the prior art that it is impossible to load and unload materials quickly, and at the same time will not affect the loading and unloading of the other three roller assemblies. The implementation of the overall solution does not require adjustment of the position of the roller assembly, and only requires quantitative control of the number of rotations, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0024] Figure 2It is a schematic diagram of the structure of the bracket and the side plate of the present invention;

[0025] Figure 3 It is a schematic diagram of the rack and bracket structure of the present invention;

[0026] Figure 4 for Figure 3 A magnified view of the structure at B in the middle;

[0027] Figure 5 for Figure 2 A magnified view of the structure at center;

[0028] Figure 6 It is a schematic diagram of the structure of the bracket and placement slot of the present invention;

[0029] Figure 7 It is a schematic diagram of the placement groove and the ratchet ring structure of the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the protection component of the present invention;

[0031] Fig. 9 It is a schematic diagram of the support rod and the first gear structure of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the sliding assembly of the present invention.

[0033] In the figure: 1. electroplating device; 2. partition; 3. bracket; 4. roller assembly; 5. moving assembly; 6. rack; 7. adjustment assembly; 8. protection assembly; 9. sliding assembly; 10. motor; 11. cylinder; 301. gear column; 302. placement groove; 303. ratchet ring; 401. storage tube; 402. support rod; 403. first gear; 404. slide groove; 405. card slot; 501. side plate; 502. telescopic rod; 503. first spring; 504. cross bar; 701. short rod; 702. second gear; 703. roller; 704. pull rope; 801. arc frame; 802. bump; 803. second spring; 901. slider; 902. avoidance groove; 903. card block; 904. third spring. DETAILED DESCRIPTION

[0034] Embodiment 1:

[0035] See also Figures 1 to 3The embodiment of the present invention provides a method for preparing a composite coating on the surface of a neodymium iron boron magnet, which is mainly used to ensure the convenience of material feeding while improving the efficiency of electroplating. The preparation method first requires placing the parts into four roller assemblies 4 arranged in a diamond shape, and there is a certain distance between the top roller assembly 4 and the three roller assemblies 4 below in the vertical direction. Then, the four roller assemblies 4 are driven to synchronously descend into the electroplating device 1 through a control mechanism. During the descent, the four roller assemblies 4 are changed from being arranged in a diamond shape to being arranged in a circular array; then, the four roller assemblies 4 are driven to rotate along the center of the array and continuously rotate by themselves through a control mechanism so that the parts can be uniformly electroplated in the electroplating device 1; finally, the multiple roller assemblies 4 and the electroplated parts are driven to rise through a control mechanism, and after rising, the roller assembly 4 located at the top returns to its initial position and is separated from the roller assemblies 4 below.

[0036] like Figure 1 As shown, the four roller assemblies 4 are arranged in a cross shape when viewed from the side. In the initial state, the upper roller assembly 4 is arranged with a certain spacing in the vertical direction, which is convenient for placing parts into the roller assembly 4 on the one hand, and for taking parts out of the uppermost roller assembly 4 after electroplating is completed on the other hand. At the same time, multiple roller assemblies 4 can increase the number of parts that can be placed, thereby improving the overall electroplating efficiency, and after the roller assembly 4 is sunk into the electroplating device 1, it can rotate along the center of the array and can also rotate by itself through the control mechanism, thereby improving the uniformity to ensure the overall electroplating effect.

[0037] Embodiment 2:

[0038] See also Figures 1 to 3 On the basis of the first embodiment, the present invention provides a device for preparing a composite coating on the surface of a neodymium iron boron magnet. The device adopts the preparation method in the first embodiment, and specifically comprises an electroplating device 1. The electroplating device 1 has a liquid tank, and a corresponding electrolyte is poured into the tank to react with the parts to complete the electroplating. Among them, the electroplating device 1, the liquid tank and the electrolyte are all existing mature technologies, and will not be described in detail here.

[0039] A partition 2 and a bracket 3 are arranged in corresponding positions above the liquid tank, with the bracket 3 on the left and the partition 2 on the right. Four roller assemblies 4 in contact with the bracket 3 are rotatably installed on the surface of the partition 2. The four roller assemblies 4 are in a diamond shape in the initial state, and the three roller assemblies 4 at the bottom are arranged in a circular array, and a gap is set between the top roller assembly 4 and the three roller assemblies 4 at the bottom, and the gap can be used for the box body (storage tool) of pre-installed parts to be placed. After the box body is placed, it is located above the front and rear roller assemblies 4 to achieve support, and at this time, the top roller assembly 4 can be quickly loaded and unloaded (reducing the up and down round-trip time for taking and placing parts from the top roller assembly 4. In the prior art, because the top roller assembly 4 is at the highest position, it is necessary to lift and lower the arm many times to complete the part placement). At the same time, with the support of the electroplating device 1, the other three roller assemblies 4 can also be quickly loaded and unloaded.

[0040] Furthermore, a moving assembly 5 for accommodating the top roller assembly 4 is formed between the partition 2 and the bracket 3, and an adjusting assembly 7 for driving the moving assembly 5 and the top roller assembly 4 to be relatively away from the bracket 3 / partition 2 is provided on the left side of the bracket 3, and a rack 6 corresponding to the position of the adjusting assembly 7 is fixedly mounted on the electroplating device 1. When the partition 2 and the bracket 3 rise, the adjusting assembly 7 engages with the rack 6 (this is the initial state), and when they are lowered into the electroplating device 1, the adjusting assembly 7 is separated from the rack 6.

[0041] At the same time, the electroplating device 1 is also provided with a driving member for driving the partition 2 and the bracket 3 to rise and fall synchronously; when the driving member is started to drive the partition 2 and the bracket 3 to descend synchronously, the adjusting assembly 7 is separated from the rack 6 so that the moving assembly 5 and the uppermost roller assembly 4 are relatively close to the bracket 3 / partition 2, so that the four roller assemblies 4 are arranged in a circular array as a whole, and the arrangement is maintained to complete the electroplating in the liquid tank. In this embodiment, the driving member, the rack 6, the partition 2, the bracket 3, the moving assembly 5 formed by the partition 2 and the bracket 3, and the adjusting assembly 7 arranged in the bracket 3 together constitute the control mechanism in the first embodiment.

[0042] See also Figures 1 to 5 In this embodiment, preferably: the roller assembly 4 for placing parts includes a storage cylinder 401, and the outer surface of the storage cylinder 401 has an openable cover (not shown in the figure). The parts can be freely taken and placed by opening the cover, which is more efficient, and the storage cylinder 401 can allow electrolyte to pass through. It is an existing mature technology and will not be described in detail here. Support rods 402 are fixedly installed on both sides of the storage cylinder 401, and the outer surface of the left short rod 701 is coaxially driven with a first gear 403 that is transmission-connected to the bracket 3.

[0043] In the above structure, the right side support rods 402 of the three lower storage tubes 401 are rotatably connected to the partition 2, and the right side support rod 402 of the uppermost storage tube 401 is rotatably connected to the moving assembly 5, but the first gears 403 on the left side support rods 402 of the four storage tubes 401 are all transmission-connected to the bracket 3. Specifically, a gear column 301 transmission-connected to the four first gears 403 is fixedly installed on the right side of the bracket 3.

[0044] Furthermore, the moving assembly 5 includes two telescopic rods 502 fixedly connected to the partition 2 and the bracket 3 respectively. The movable ends of the two telescopic rods 502 are fixedly installed with side panels 501, and a cross bar 504 is fixedly installed between the two side panels 501. The arrangement of the cross bar 504 allows the two side panels 501 to keep moving synchronously. The side panels 501 form a complete circle after being attached to the bracket 3 or the partition 2. At the same time, a first spring 503 is sleeved on the outer surface of the telescopic rod 502. Under the action of the first spring 503, the two side panels 501 tend to move relatively away from the partition 2 / bracket 3, that is, the following occurs: Figure 2 The state shown, and the side panel 501 can maintain a fit state (overall circular state) with the partition 2 / bracket 3 under the action of the adjustment component 7.

[0045] Specifically, the adjustment assembly 7 includes a short rod 701 rotatably mounted in the bracket 3, a roller 703 and a second gear 702 corresponding to the position of the rack 6 are fixedly mounted on the outer surface of the short rod 701, and a pull rope 704 that passes through the bracket 3 and is fixedly connected to the left side plate 501 is fixedly wound on the outer surface of the roller 703; when the second gear 702 is meshed with the rack 6 for transmission, the roller 703 can be driven to rotate and release the pull rope 704, so that the left side plate 501 is relatively away from the bracket 3 under the action of the first spring 503, and the right side plate 501 is synchronously away from the partition 2 under the action of the cross bar 504. At the same time, a torsion spring is sleeved on the outer surface of the short rod 701, so that when the second gear 702 is separated from the rack 6 as the bracket 3 moves, the short rod 701, the second gear 702 and the roller 703 can automatically reverse, rewind the pull rope 704, and then drive the left side plate 501 to fit with the bracket 3, and make the right side plate 501 fit with the partition 2 synchronously through the cross bar 504.

[0046] The driving parts that provide overall power include two cylinders 11 fixedly connected to the electroplating device 1 and a motor 10 fixedly installed on the partition 2. The output ends of the two cylinders 11 are respectively fixedly connected to the bracket 3 and the motor 10. The motor 10 provides power for the rotation of the partition 2, so that the first gear 403 can rotate and rotate along the center of the tooth column 301. The two cylinders 11 can realize the synchronous lifting and lowering of the partition 2 and the bracket 3; of course, the cylinder 11 can also be replaced by an electric push rod or other existing mature mechanisms that can realize reciprocating lifting.

[0047] When in use, the parts are sequentially placed in the four storage tubes 401, and then the two cylinders 11 are started to drive the bracket 3, the motor 10 and the partition 2 to drop synchronously into the liquid tank. During the descent, the second gear 702 separates from the rack 6 and then drives the reel 703 to reel up, and the torsion spring and the pull rope 704 are used to make the left side plate 501 fit with the bracket 3. The left side plate 501 drives the right side plate 501 to move synchronously through the cross bar 504 to make it fit with the partition 2. Finally, the four storage tubes 401 are arranged in a circular array as a whole, and the center of the array is the center of the tooth column 301. Then the cylinder 11 is closed and the motor 10 is started to drive the partition 2 and the right support rod 402 to rotate. The right support rod 402 cooperates with the left support rod 402, the first gear 403 and the tooth column 301 to drive the storage tube 401, rotate along the center of the tooth column 301 and continue to rotate. In this process, the parts in the storage tube 401 are effectively electroplated.

[0048] After the electroplating is completed, the motor 10 is turned off and the cylinder 11 is started to drive the partition 2 and the bracket 3 to rise. When they are about to rise to the original position, the second gear 702 is meshed with the rack 6 for transmission, and then the pull rope 704 is unwound through the roller 703 and the short rod 701. Under the action of the telescopic rod 502, the first spring 503 and the cross bar 504, the two side panels 501 are relatively away from the partition 2 and the bracket 3, so that the top storage tube 401 rises a certain distance (original position) relative to the lower storage tube 401, and the four storage tubes 401 are arranged in a diamond shape as a whole.

[0049] To sum up, through the cooperation of structures such as the tooth column 301, the side plate 501, the rack 6 and the first gear 403, more parts can be effectively electroplated at one time, thereby greatly improving the electroplating efficiency, and the revolution and rotation of the storage cylinder 401 can ensure uniform mixing, thereby ensuring the electroplating quality of the parts; on this basis, space can be left between the top storage cylinder 401 and the bottom storage cylinder 401, and the cooperation of the middle front and back arranged storage cylinders 401 can achieve effective support for subsequent storage tools, so as to facilitate the loading and unloading of the top storage cylinder 401, which can solve the pain point of the top storage cylinder 401 in the prior art that it is impossible to load and unload materials quickly, and at the same time will not affect the loading and unloading of the other three storage cylinders 401. The implementation of the overall solution does not require adjustment of the position of the storage cylinder 401, nor does it need to worry about the influence of the position change of the storage cylinder 401 on the opening and closing of the cover plate. At the same time, the control of the motor 10 is relatively simple, and it only needs to quantitatively control the number of rotations, and the overall practicality is higher.

[0050] Embodiment three:

[0051] See also Figures 1 to 7On the basis of the second embodiment, in order to ensure the support of the two storage tubes 401 arranged in the front and back in the middle, a placement groove 302 is jointly opened on the surface of the bracket 3 and the left side plate 501, and a ratchet ring 303 is fixedly installed inside the placement groove 302, and a protective component 8 that is movably engaged with the ratchet ring 303 is jointly fixedly installed between the two left support rods 402 that are respectively fixedly connected to the two middle storage tubes 401.

[0052] When the motor 10 drives the two storage cylinders 401 arranged front and back in the middle to return to the front and back horizontal state through the partition 2, the protective component 8 and the ratchet ring 303 can be engaged to limit the two storage cylinders 401 arranged front and back, so as to prevent the tendency of the two storage cylinders 401 to fall and cause damage to the support rod 402, thereby improving the support for the right support rod 402. On this basis, the weight of the parts placed in the front storage cylinder 401 can be controlled to be greater than the weight of the parts placed in the rear storage cylinder 401.

[0053] In the above structure, since the protective component 8 is located in the placement groove 302, the four left side support rods 402 extend into the placement groove 302. The placement groove 302 is formed by the left side plate 501 and the bracket 3. The separation and combination of the left side plate 501 and the bracket 3 will not affect the shape of the placement groove 302. The opening of the placement groove 302 realizes the placement of the ratchet ring 303 on the one hand, and can also realize effective support of the top and bottom left side support rods 402 on the other hand. The protective component 8 cooperates with the ratchet ring 303 to realize effective support of the front and rear left side support rods 402, and the basis of this effective support is the diamond arrangement in the initial state.

[0054] See also Figures 1 to 8 In this embodiment, preferably, the protective component 8 includes an arc frame 801 that is rotatably connected to the two left support rods 402 on the front and rear storage tubes 401, so that the rotation of the left support rods 402 will not interfere with the arc frame 801, and both sides of the outer surface of the arc frame 801 are elastically connected with protrusions 802 that are movably engaged with the ratchet ring 303 through the second spring 803.

[0055] In the above structure, the arc frame 801 is located on the left side of the left support rod 402 corresponding to the lower storage tube 401, and the misalignment with the arc frame 801 will not affect the rotation of the left support rod 402 on the lower storage tube 401. When the arc frame 801 rotates along the placement groove 302 with the corresponding two left support rods 402, the protrusion 802 can reciprocate relative to the tooth column 301 under the action of the ratchet ring 303 and the second spring 803, and when the corresponding two left support rods 402 return to the front and rear horizontal state, the protrusion 802 corresponding to the front left support rod 402 slides out relative to the arc frame 801 and engages with the ratchet ring 303. At the same time, in order to adapt to the splicing of the placement groove 302 relative to the bracket 3 and the left side plate 501, the ratchet ring 303 is also spliced ​​by two parts, one part is fixed in the partial placement groove 302 on the left side plate 501, and the other part is fixed in the partial placement groove 302 on the bracket 3.

[0056] When in use, through the cooperation of structures such as the cylinder 11, the rack 6, the partition 2 and the bracket 3, the four storage cylinders 401 are driven to fall into the electroplating device 1 and are arranged in a circular array as a whole. The motor 10, the partition 2, the support rod 402 and the gear column 301 drive the storage cylinder 401 to revolve and rotate along the gear column 301 to complete the coating electroplating. The working process and effect of this part are the same as those in Example 2 and will not be repeated here. The difference is that when the front and rear two left-side support rods 402 rotate, the arc frame 801 can be driven to rotate synchronously along the placement groove 302, and the arc frame 801 cooperates with the ratchet ring 303 and the second spring 803 when moving to drive the protrusion 802 to shrink and slide out relative to the arc frame 801; when the front and rear two storage tubes 401 are in a front-to-back horizontal state, the two corresponding left-side support rods 402 are also in a front-to-back horizontal state. At this time, the protrusion 802 in front of the arc frame 801 can slide out relatively under the action of the second spring 803, and engage with the surface of the ratchet ring 303 so that the front left-side support rod 402 cannot drop. In cooperation with the arc frame 801, it can also effectively support the rear left-side support rod 402, and the upper and lower left-side support rods 402 can also be effectively supported by abutting against the groove wall of the placement groove 302.

[0057] In the second embodiment, although a distance can be created between the top storage cylinder 401 and the bottom storage cylinder 401 to facilitate loading and unloading of the top storage cylinder 401, the four left support rods 402 cannot be effectively supported when they are restored to the diamond arrangement state. At this time, combined with the weight of the parts placed in the storage cylinder 401 and the unilateral support of the right support rod 402, the damage to the right support rod 402 and the storage cylinder 401 is relatively large, thereby affecting the overall service life, and there are certain limitations in use.

[0058] Compared with the second embodiment, through the cooperation of structures such as the left support rod 402, the arc frame 801, the placement groove 302 and the ratchet ring 303, the left support rod 402 on the upper and lower sides is offset from the placement groove 302, so as to achieve effective support of the left support rods 402 on the upper and lower sides and the corresponding storage tube 401; when the front and rear storage tubes 401 restore the front and rear horizontal state, the front protrusion 802 and the ratchet ring 303 can be movably engaged to cooperate with the arc frame 801, so as to achieve effective support of the left support rod 402 on the front and rear sides, provide support force for the left side of the storage tube 401, share the pressure of the unilateral support of the right support rod 402, and thus effectively reduce the damage to the right support rod 402 and the storage tube 401, so as to extend the overall service life. The overall operation is combined with the rotation of the left support rod 402 and the setting of the bracket 3, which will not affect the movement of the top storage tube 401 and the left side plate 501, and has stronger applicability.

[0059] Embodiment 4:

[0060] See also Figures 1 to 9 On the basis of the second embodiment, in order to further facilitate the loading and unloading of parts by the storage tube 401, the left support rod 402 and the first gear 403 are assembled in a key-shaft manner to achieve coaxial transmission. A key slot is provided on the first gear 403, and a sliding component 9 corresponding to the position of the key slot is provided on the left support rod 402. The sliding component 9 acts as a key shaft and forms a key-shaft assembly with the key slot on the first gear 403.

[0061] A sliding groove 404 is provided on the outer surface of the left support rod 402 for sliding assembly of the sliding component 9. At the same time, two slots 405 corresponding to the position of the sliding component 9 are also provided on the outer surface of the left support rod 402, and one of the slots 405 is in an engaged state with the sliding component 9. When the sliding component 9 is engaged with the other slot 405, it is in a misaligned state with the first gear 403. At this time, the left support rod 402 can rotate freely while the first gear 403 and the tooth column 301 remain in an engaged state and do not move.

[0062] See also Figures 1 to 10 In this embodiment, preferably, the sliding assembly 9 includes a slider 901 that is slidably matched with the slide groove 404, and a avoidance groove 902 that is adapted to the outer surface shape of the left support rod 402 is provided on the surface of the slider 901, and the upper and lower width dimensions of the avoidance groove 902 are greater than or equal to the upper and lower thickness dimensions of the first gear 403 ( Fig.10A block 903 engaged with one of the slots 405 is slidably mounted on the surface of the slider 901, and a third spring 904 is fixedly mounted between the slider 901 and the side of the block 903 away from the slot 405. Under the action of the third spring 904, the block 903 can maintain the engaged state with the slot 405; the block 903 is L-shaped and protrudes relatively from the slider 901, so that the staff can move it easily, and can slide back and forth relative to the slider 901.

[0063] In the above structure, when the block 903 is engaged with one of the slots 405, there is an overlapping area between the avoidance slot 902 and the first gear 403 (i.e., the first gear 403 partially falls into the avoidance slot 902). At this time, the rotation of the first gear 403 can drive the left support rod 402 to rotate synchronously through the slider 901; when the block 903 is engaged with the other slot 405, the first gear 403 completely falls into the avoidance slot 902 (the first gear 403 can rotate into the avoidance slot 902). At this time, when the left support rod 402 rotates, the first gear 403 is located in the avoidance slot 902, and will not interfere with the rotation of the left support rod 402. Fig.10 When the block 903 is engaged with the upper slot 405 , the left support rod 402 and the first gear 403 can rotate synchronously.

[0064] When in use, the four storage tubes 401 are driven by the structures such as the rack 6, the partition 2 and the bracket 3 to fall into the electroplating device 1 and are arranged in a circular array as a whole. The storage tubes 401 are driven by the partition 2, the support rod 402 and the tooth column 301 to revolve and rotate along the tooth column 301 to complete the coating electroplating. The structures such as the placement groove 302, the arc frame 801 and the ratchet ring 303 are used to effectively support the left support rod 402 to share the pressure of the right support rod 402. The working process and effect of this part are the same as those in Example 3 and will not be repeated here. The difference is that after the parts are electroplated and the storage tube 401 rises and resets, the block 903 is moved along the slider 901 and the third spring 904 is squeezed to separate it from the upper slot 405, and then the slider 901 is moved downward along the slide slot 404, so that the block 903 is engaged with the lower slot 405 under the action of the third spring 904. In this process, the avoidance groove 902 moves synchronously and completely corresponds to the first gear 403. At this time, the storage tube 401 can be freely rotated, the direction of the cover plate is adjusted downward and the cover plate is opened, so that the electroplated parts automatically slide down and fall into the storage tool. Then, the specific position of the cover plate in the upward direction can be adjusted according to the needs, and then the block 903 is moved to separate it from the lower slot 405 and then engaged with the upper slot 405, so that the avoidance groove 902 overlaps with the first gear 403, and the synchronous rotation state of the first gear 403 and the left support rod 402 is restored.

[0065] In the third embodiment, although the left support rod 402 can be effectively supported by the cooperation of the structures such as the placement groove 302 and the ratchet ring 303, and the pressure on the right support rod 402 can be shared to reduce the damage to the right support rod 402 and the storage tube 401, due to the initial setting of the cover relative to the storage tube 401, the cover plate cannot be set directly below the storage tube 401 or at a position close to it, otherwise the parts placed in the storage tube 401 will automatically fall from the opened cover plate due to gravity. Therefore, the opening and closing of the cover plate needs to be set at a position close to it above the storage tube 401. Although the design close to it can realize stable loading of parts, it needs to be taken out one by one when unloading, which has a heavy workload and low efficiency, and has certain limitations in use.

[0066] Compared with the third embodiment, through the cooperation of the structures such as the left support rod 402, the first gear 403, the avoidance groove 902 and the slider 901, when the electroplating is completed and the storage tube 401 rises and resets, the corresponding positions of the avoidance groove 902 and the first gear 403 can be adjusted to realize the free rotation of the storage tube 401, and then the direction of the cover plate is adjusted downward to facilitate the automatic unloading of parts (gravity effect), and the support of the storage tools by the two middle storage tubes 401 can effectively reduce the workload and improve the work efficiency. At the same time, the specific position of the cover plate facing upward can be adjusted according to the needs to adapt to the angle requirements of different staff members to put the parts into the storage tube 401, further reducing the workload, and the overall operation is combined with the rotation of the left support rod 402 and the setting of the first gear 403, which will neither affect the synchronous rotation of the first gear 403 and the left support rod 402 during electroplating, nor interfere with the movement of the left side plate 501 relative to the bracket 3, meeting more needs in actual use.

Claims

1. A method for preparing a composite coating on the surface of a neodymium iron boron magnet, characterized in that: The following steps are involved: S1, placing the parts into four roller assemblies arranged in a diamond shape, wherein a gap is provided between the top roller assembly and the lower roller assembly; S2, driving the four roller assemblies to synchronously descend into the electroplating device through the control mechanism, and during the descent, the four roller assemblies are arranged from a diamond shape to a ring array; S3, driving the four roller assemblies to rotate and self-rotate along the center of the array through the control mechanism, and completing the coating electroplating in the electroplating device; The preparation method adopts a preparation device for the composite coating on the surface of a NdFeB magnet, comprising an electroplating device, on which are arranged four roller assemblies in a diamond shape for placing parts and a control mechanism for driving the four roller assemblies to rise and fall synchronously, the control mechanism comprising a rack fixedly connected to the electroplating device, a partition and a bracket for placing the four roller assemblies, and a driving member for driving the partition and the bracket to rise and fall synchronously, a moving assembly for placing the uppermost roller assembly is formed between the partition and the bracket, and an adjusting assembly fixedly connected to the moving assembly and corresponding to the position of the rack is arranged inside the bracket; The driving member is started, and the four roller assemblies arranged in a diamond shape can be transformed into a ring array arrangement through the rack and the moving assembly, and the four roller assemblies can also be driven to rotate along the center of the array and rotate on their own; The drum assembly includes a storage cylinder, an outer surface of which is provided with an openable cover plate, support rods are fixedly installed at both ends of the storage cylinder, one side of the support rods on the three lower storage cylinders is rotatably connected to the partition plate, one side of the support rod on the uppermost storage cylinder is rotatably connected to the moving assembly, the outer surfaces of the other side of the support rods on the four storage cylinders are coaxially driven with a first gear, and a tooth column that is transmission-connected to the four first gears is fixedly installed on the surface of the bracket; The moving assembly comprises two telescopic rods respectively fixedly connected to the partition and the bracket, the movable ends of the two telescopic rods are fixedly mounted with side plates, a cross bar is fixedly mounted between the two side plates, and the outer surface of the telescopic rod is sleeved with a first spring; The adjusting assembly includes a short rod rotatably installed in the bracket, a roller and a second gear corresponding to the position of the rack are fixedly installed on the outer surface of the short rod, a pull rope fixedly wound on the outer surface of the roller and fixedly connected to the upper side plate of the bracket, and a torsion spring is sleeved on the outer surface of the short rod; when the second gear rises and meshes with the rack for transmission, it can drive the roller to rotate and release the pull rope, thereby driving the side plate on the bracket to move relatively away from the bracket.

2. The preparation equipment of composite coating on the surface of NdFeB magnet according to claim 1, characterized in that: The surfaces of the bracket and the corresponding side plates are jointly provided with a placement groove, a ratchet ring is fixedly installed inside the placement groove, and a protective component that is movably engaged with the ratchet ring is jointly fixedly installed between the two support rods where the first gear is installed and located in the middle position; when the two middle support rods are in a horizontal shape front and back, the protective component engages with the ratchet ring to support the two middle support rods.

3. The preparation equipment of the composite coating on the surface of NdFeB magnet according to claim 2, characterized in that: The protection component comprises an arc frame which is rotatably connected to two corresponding support rods, and both sides of the outer surface of the arc frame are elastically connected with protrusions which are movably engaged with the ratchet ring through a second spring.

4. The preparation equipment of composite coating on the surface of NdFeB magnet according to claim 3, characterized in that: The protrusion can approach or move away from the outer surface of the arc frame under the action of the second spring, and the arc frame is installed at the end of the corresponding support rod away from the storage tube to form a misalignment.

5. The preparation device of the composite coating on the surface of NdFeB magnet according to any one of claims 1 to 4, characterized in that: The first gear and the corresponding support rod are assembled in a key-shaft manner, and a key groove is provided on the surface of the first gear, and a sliding component corresponding to the position of the key groove is provided on the outer surface of the corresponding support rod, and a sliding groove for sliding cooperation of the sliding component and two clamping grooves corresponding to the position of the sliding component are provided on the outer surface of the corresponding support rod, and one of the clamping grooves is in a clamping state with the sliding component.

6. The preparation equipment of composite coating on the surface of NdFeB magnet according to claim 1, characterized in that: The driving member comprises two cylinders fixedly connected to the electroplating device and a motor fixedly mounted to the partition, and the output ends of the two cylinders are fixedly connected to the bracket and the motor respectively.

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