A roller conductive device for NdFeB electroplating

Abstract

The present invention provides a roller conductive device for NdFeB electroplating, comprising a roller, a conductive disk, a conductive tile and a conductor. The roller is arranged horizontally, and end caps are arranged at both ends of the roller. The conductive disk is arranged on the inner side of the end cap and rotates with the roller. The inner side of the conductive disk contacts the product inside the roller. A fixed conductive tile is arranged on the outer side of the conductive disk. One end of the conductive tile contacts the lower part of the conductive disk, and the other end of the conductive tile is connected to the conductor. The conductive disk is composed of a plurality of conductive plates, which are distributed on the inner side of the end cap at intervals along the circumference. When the roller drives the conductive disk to rotate, the plurality of conductive plates contact one end of the conductive tile in turn to conduct electricity, so that the conductive plate that rotates to the lower part contacts the product to form a current loop. The conductive disk of the present invention is composed of a plurality of conductive plates distributed at intervals along the circumference, which solves the problem that the upper part of the conductive disk does not contact the product, resulting in uneven electroplating effect, waste of electric energy and burning of the conductive disk.

Description

Technical Field

[0001] The invention belongs to the technical field of electroplating equipment, and in particular relates to a roller conductive device used for NdFeB electroplating. Background Art

[0002] The conductive structure design of the traditional electroplating drum is relatively simple, such as Figure 1 As shown, a PP shaft 9 is provided on the end cover 11 of the drum 1, and a cathode wire 4 extends from the outside of the drum into the inside of the drum through the hole on the PP shaft to contact the product 5 to form a current loop. As the drum rotates, the product will roll, and the wire will also move with the product. There may be a situation where the wire moves entirely above the product or the tail is lifted and separated from the product, so that the wire cannot contact the product to form a current loop.

[0003] Some electroplating drums are also provided with a conductive disk on the inner side of the end cover, and the conductive disk can always be in contact with the product to form a current loop, such as a plating drum device disclosed in patent CN112323127A. However, the conductive disk of this structure is connected to the cathode wire or the guide rod, and there is current on the entire conductive disk. Due to the effect of gravity, the product will stick to the bottom of the drum during the rolling process, so that the conductive disk will not be in contact with the product as a whole. The upper part of the conductive disk will not be in contact with the product, but will directly contact the electroplating solution, resulting in the current being mainly concentrated in the contact area between the conductive disk and the solution, rather than being evenly distributed on the surface of the product, which will lead to uneven electroplating effect and waste a lot of electric energy. The contact area between the conductive disk and the solution will also generate too much heat, which can easily cause the conductive disk to burn. Summary of the invention

[0004] The purpose of the present invention is to provide a roller conductive device for NdFeB electroplating to solve the problems of uneven electroplating effect, waste of electric energy and burning of the conductive disk caused by the upper part of the conductive disk not contacting the product.

[0005] To achieve the above-mentioned purpose, the solution of the present invention is: a roller conductive device for neodymium iron boron electroplating, comprising a roller, a conductive disk, a conductive tile and a conductive wire, wherein the roller is arranged horizontally, and end covers are provided at both ends of the roller, the conductive disk is arranged on the inner side of the end cover and rotates with the roller, the inner side of the conductive disk contacts the product inside the roller, and a fixed conductive tile is provided on the outer side of the conductive disk, one end of the conductive tile contacts the lower part of the conductive disk, and the other end of the conductive tile is connected to the conductive wire; the conductive disk is composed of a plurality of conductive plates, and the plurality of conductive plates are distributed on the inner side of the end cover at intervals along the circumferential direction, and when the roller drives the conductive disk to rotate, the plurality of conductive plates contact one end of the conductive tile in turn to conduct electricity, so that the conductive plate rotated to the lower part contacts the product to form a current loop.

[0006] Furthermore, an insulating cylinder is provided at the center of the end cover, a plurality of conductive plates are circumferentially distributed around the insulating cylinder, and one end of the conductive plates facing the insulating cylinder is fixed to the insulating cylinder.

[0007] Furthermore, the conductive plate is provided with an extension portion extending horizontally to the outside of the end cover at one end facing the insulating cylinder, all the extension portions are distributed at intervals along the circumferential direction on the outer circumference of the insulating cylinder and fixed to the outer circumference of the insulating cylinder, and the conductive tile is located on the outer side of the end cover and in contact with the extension portion below the insulating cylinder.

[0008] Furthermore, the insulating cylinder is cylindrical, the inner and outer circumferences of the extension are both arc surfaces, the inner circumference of the extension is fixedly matched with the outer circumference of the insulating cylinder, and the inner circumference of the conductive shoe is an arc surface matched with the outer circumference of the extension.

[0009] Furthermore, the number of the conductive plates is 4-8, and when the roller drives the conductive disk to rotate, the conductive tile contacts one or two conductive plates.

[0010] Furthermore, the conductive plate is in the shape of a fan-shaped plate, the conductive disk composed of multiple conductive plates is in the shape of a circular disk, the end cover is a regular hexagonal end cover, and the radius of the conductive disk is less than or equal to the side length of the inner side of the end cover.

[0011] Furthermore, an arc-shaped insulating portion is provided on the inner side of the conductive plate near the extending portion, and all insulating portions form a ring structure.

[0012] Furthermore, the outer diameter of the conductive disk is equal to the side length of the inner side of the end cover, the outer diameter of the conductive disk is 118.7mm, the outer diameter of the insulating part is 53.75mm, the inner diameter is 30mm, the width of the conductive tile is 6mm, the height is 15mm, and the spacing width between the conductive plates is 1mm.

[0013] Furthermore, a bracket is provided on the outer side of the end cover, the roller is rotatably arranged on the bracket, and the conductive tile is fixedly arranged on the bracket.

[0014] Furthermore, a protective shell is provided on the outer side of the bracket, the protective shell covers the outer periphery of the conductive tile, and the wire passes through the protective shell and is connected to the conductive tile.

[0015] After adopting the above scheme, the beneficial effects of the present invention are:

[0016] The conductive disk provided in the present invention is composed of a plurality of conductive plates, which are distributed at intervals along the circumferential direction on the inner side of the end cover of the roller, that is, there are gaps between adjacent conductive plates without contacting each other, the roller can drive the conductive disk to rotate, and a conductive tile is provided on the outer side of the conductive disk, which is fixedly arranged and does not rotate with the roller, one end of the conductive tile contacts the lower part of the conductive disk, and the other end is connected to the wire, and the wire conducts the current to the conductive disk through the conductive tile; when the roller drives the conductive disk to rotate, the plurality of conductive plates contact the conductive tile in turn to connect the current, because the conductive plates are arranged at intervals, the conductive plates are not conductive, only the conductive plates contacting the conductive tile have current, and the conductive plate can form a current loop only when it contacts the product, and the conductive tile only contacts the conductive plate rotated to the lower part, so that no matter whether the roller rotates or not, there will always be a product in contact with the conductive plate at the lower part, the conductive plate in contact with the conductive tile can always contact with the product to form a current loop, and other conductive plates will not have current, and the current can be evenly distributed on the surface of the product, so that the electroplating effect is uniform, and the waste of electric energy can be reduced, and the problem of the conductive plate being burned will not occur, thereby improving the service life of the conductive plate.

[0017] Moreover, the conductive disc rotates with the drum, and multiple conductive plates contact the conductive tiles in turn to conduct electricity in turn, avoiding the problem of one conductive plate being damaged due to long-term conduction, and further improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of an existing electroplating drum;

[0019] Figure 2 It is a front view of the electroplating drum of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure in which a protective shell is provided on the outer side of the electroplating drum of the present invention;

[0021] Figure 4 The schematic diagram of the structure of the conductive tile and the conductive plate of the present invention Figure 1 ;

[0022] Figure 5 The schematic diagram of the structure of the conductive tile and the conductive plate of the present invention Figure 2 ;

[0023] Figure 6 It is an exploded view of the parts of the conductive disk of the present invention;

[0024] Figure 7 A side view of the invented electroplating drum.

[0025] Description of labels:

[0026] 1. Roller; 11. End cover; 2. Conductive disc; 21. Conductive plate; 211. Extension part; 212. Insulation part; 3. Conductive tile; 4. Wire; 5. Product; 6. Insulating cylinder; 7. Bracket; 8. Protective shell; 9. PP shaft. DETAILED DESCRIPTION

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-7 As shown, the present invention provides a roller conductive device for NdFeB electroplating, comprising a roller 1, a conductive disc 2, a conductive tile 3 and a wire 4. The roller 1 is arranged horizontally, and end caps 11 are provided at both ends of the roller 1. The conductive disc 2 is arranged on the inner side of the end cap 11 and rotates with the roller 1. The conductive disc 2 is composed of a plurality of conductive plates 21, which are distributed on the inner side of the end cap 11 at intervals along the circumferential direction, that is, there are gaps between adjacent conductive plates 21 without contacting each other, so that no current is conducted between the conductive plates 21. The gaps between the conductive plates 21 can also be filled with PP material or other insulating materials to ensure insulation between the conductive plates. The inner side of the conductive disc 2 contacts the product 5 inside the roller 1, and a fixed conductive tile 3 is provided on the outer side of the conductive disc 2. One end of the conductive tile 3 contacts the lower part of the conductive disc 2, and the other end of the conductive tile 3 is connected to the wire 4. The wire 4 is a cathode wire 4. The current is conducted to the conductive disc 2 through the conductive tile 3. The inner side of the conductive disc 2 contacts the product 5 to form a circuit loop for electroplating. The conductive disc 2 is composed of a plurality of conductive plates 21. When the drum 1 drives the conductive disc 2 to rotate, the plurality of conductive plates 21 contact one end of the conductive tile 3 in turn. Only the conductive plate 21 in contact with the conductive tile 3 has current. The conductive plate 21 can form a current loop when in contact with the product 5. The conductive tile 3 contacts the lower part of the conductive disc 2, that is, contacts the conductive plate 21 at the lower part. Due to the effect of gravity, the NdFeB product will stick to the bottom of the drum during the rolling process. Therefore, regardless of whether the drum 1 rotates or not, there will always be a product 5 in contact with the conductive plate 21 at the lower part. The conductive plate 21 in contact with the conductive tile 3 can always contact with the product to form a current loop, while the other conductive plates 21 will not have current. The current can be evenly distributed on the surface of the product, making the electroplating effect uniform, reducing the waste of electric energy, and not causing the problem of the conductive plate 21 being burned, thereby improving the service life of the conductive plate 21. In addition, the conductive disc 2 rotates with the drum 1, and the plurality of conductive plates 21 contact the conductive tile 3 in turn to conduct electricity, thereby avoiding the problem of one conductive plate 21 being damaged due to long-term conduction, thereby further improving the service life.

[0029] Key References Figure 2 and Figure 4-6An insulating cylinder 6 is provided at the center of the end cover 11, and a plurality of conductive plates 21 are circumferentially distributed around the insulating cylinder 6, and one end of the conductive plates 21 facing the insulating cylinder 6 is fixed to the insulating cylinder 6. The insulating cylinder 6 is made of insulating material, such as insulating plastic or insulating rubber, to prevent current from being conducted between the conductive plates 21, and the roller 1 and the conductive disk 2 both rotate around the insulating cylinder 6, so that when the conductive disk 2 rotates, all the conductive plates 21 can contact the conductive tile 3 in turn.

[0030] Furthermore, an extension portion 211 is provided at one end of the conductive plate 21 facing the insulating cylinder 6 and extending horizontally to the outside of the end cover 11. The inner and outer circumferences of the extension portion 211 are both arc surfaces. The insulating cylinder 6 is cylindrical. The inner circumference of the extension portion 211 can be fixed to the outer circumference of the insulating cylinder 6. All extension portions 211 are distributed on the outer circumference of the insulating cylinder 6 at intervals in the circumferential direction. The end cover 11 is fixed to the extension portion 211. The conductive tile 3 is arranged on the outside of the end cover 11 but not fixed to the end cover 11. The conductive tile 3 is located below the insulating cylinder 6 and contacts the extension portion 211 below the insulating cylinder 6. The conductive tile 3 is tile-shaped, and its inner circumference is an arc surface that cooperates with the outer circumference of the extension portion 211, so that the conductive disk 2 can rotate smoothly while the conductive tile 3 contacts the extension portion 211.

[0031] Specifically, the number of the conductive plates 21 can be set as required, preferably 4-8, and 8 is the best. The size of the conductive tile 3 and the gap width between adjacent conductive plates 21 can also be set as required. When the drum 1 drives the conductive disk 2 to rotate, the conductive tile 3 only contacts one or two adjacent conductive plates 21, so that the lower part of the conductive disk 2 is conductive and the upper part is non-conductive.

[0032] Key References Figure 4-6 The conductive plate 21 is in the shape of a fan-shaped plate, and the conductive disk 2 composed of multiple conductive plates 21 is in the shape of a circular disk. This arrangement facilitates the circumferential layout of the conductive plates 21, and the conductive plates 21 have a large area, which is conducive to contact with the product 5. Of course, the shape of the conductive plate 21 is not limited to this, and can also be a triangular plate, a rectangular plate or other shapes.

[0033] like Figure 7As shown, since the NdFeB products will stick to the bottom of the drum 1 during the rolling process, when the number of products does not exceed half of the loading capacity of the drum 1, the part of the conductive plate 21 close to the insulating cylinder 6 may not contact the product, and the electroplating reaction of this part will occur directly on the conductive plate 21, and there will still be problems of uneven conductivity, waste of electric energy and burning of the conductive plate. Therefore, it is necessary to set an arc-shaped insulating part 212 at the position close to the extension part 211 on the inner side of the conductive plate 21, and all the insulating parts 212 form a ring structure, that is, the insulating part 212 is insulated, for example, a PP plate or other insulating material is attached to the position of the insulating part 212 to make the insulating part 212 non-conductive, and the area of ​​the insulating part 212 can be set according to the number of products, so that when the product rolls, only the part of the conductive plate 21 that contacts the product is conductive. It should be noted that the insulating part 212 is only set on the inner side of the conductive plate 21, and the outer side of the conductive plate 21 and the extension part 211 are not insulated, which will not affect the contact and conductivity between the conductive tile 3 and the conductive plate 21.

[0034] like Figure 7 As shown, the drum 1 is a hexagonal drum, the end cover 11 is a regular hexagonal end cover, and the conductive disk 2 is preferably disc-shaped. The radius of the conductive disk 2 is less than or equal to the side length of the inner side of the end cover 11. In order to maximize the conductive area, the radius of the conductive disk 2 can be equal to the side length of the inner side of the end cover 11. The increase in the conductive area is conducive to the improvement of current efficiency.

[0035] Specifically, the outer diameter of the conductive plate 2 is equal to the side length of the inner side of the end cover 11, and when the outer diameter D1 of the conductive plate 2 is 118.7 mm (with a tolerance of ±1 mm), the outer diameter D2 of the insulating portion 212 is 53.75 mm (with a tolerance of ±1 mm), and the inner diameter D3 is 30 mm. With this size, the drum 1 can be loaded with 1 / 4 to 1 / 3 of the capacity of the product, and the product will not contact the insulating portion 212. In addition, the spacing width D5 between the conductive plates 21 is 1 mm, and the conductive area of ​​the conductive plate 2 is maximized while ensuring the insulation between the conductive plates 21.

[0036] Furthermore, the width of the conductive tile 3 should be neither too small nor too large. If it is too small, it will affect the current size, and if it is too large, it will conduct electricity with the upper conductive plate 21. When the conductive plate 21 is of the above-mentioned size and there are 8 conductive plates, the width D4 of the conductive tile 3 is 6 mm and the height is 15 mm, which can ensure sufficient current, and the conductive tile 3 can contact with at most two conductive plates 21 at a time, and the conductive areas of these two conductive plates 21 can be covered by the product to ensure the electroplating efficiency.

[0037] Key References Figure 3A bracket 7 is provided on the outer side of the end cover 11, and the roller 1 is rotatably arranged on the bracket 7. A driving device (not shown in the figure) for driving the roller 1 to rotate is provided on the bracket 7. The roller 1 rotates relative to the bracket 7. The conductive tile 3 is fixedly arranged on the bracket 7. A protective shell 8 is provided on the outer side of the bracket 7. The protective shell 8 is covered on the outer periphery of the conductive tile 3. The wire 4 passes through the protective shell 8 and is connected to the conductive tile 3. The material of the protective shell 8 can be an insulating material, which has insulating, waterproof and dustproof protective functions.

[0038] The above description is only a preferred embodiment of the present invention and is not a limitation on the design of this case. Any equivalent changes made based on the design key of this case shall fall within the protection scope of this case.

Claims

1. A roller conductive device for NdFeB electroplating, characterized in that: It includes a roller, a conductive disc, a conductive tile and a conducting wire. The roller is arranged horizontally, and end covers are arranged at both ends of the roller. The conductive disc is arranged on the inner side of the end cover and rotates with the roller. The inner side of the conductive disc contacts the product inside the roller. A fixed conductive tile is arranged on the outer side of the conductive disc. One end of the conductive tile contacts the lower part of the conductive disc, and the other end of the conductive tile is connected to the conducting wire. The conductive disc is composed of a plurality of conductive plates, which are distributed on the inner side of the end cover at intervals along the circumferential direction. The conductive plates are in the shape of fan-shaped plates, and the conductive disc composed of the plurality of conductive plates is in the shape of a disc. When the roller drives the conductive disc to rotate, the plurality of conductive plates contact one end of the conductive tile in turn to conduct electricity, so that the conductive plate rotated to the lower part contacts the product to form a current loop.

2. A roller conductive device for NdFeB electroplating as claimed in claim 1, characterized in that: An insulating cylinder is arranged at the center of the end cover, and a plurality of conductive plates are circumferentially distributed around the insulating cylinder, and one end of the conductive plates facing the insulating cylinder is fixed to the insulating cylinder.

3. A roller conductive device for NdFeB electroplating as claimed in claim 2, characterized in that: The conductive plate is provided with an extension portion extending horizontally to the outside of the end cover at one end facing the insulating cylinder. All the extension portions are distributed at intervals along the circumferential direction on the outer circumference of the insulating cylinder and are fixed to the outer circumference of the insulating cylinder. The conductive shoe is located on the outer side of the end cover and contacts the extension portion below the insulating cylinder.

4. A roller conductive device for NdFeB electroplating as claimed in claim 3, characterized in that: The insulating cylinder is cylindrical, the inner and outer circumferences of the extension are both arc surfaces, the inner circumference of the extension is fixedly matched with the outer circumference of the insulating cylinder, and the inner circumference of the conductive shoe is an arc surface matched with the outer circumference of the extension.

5. A roller conductive device for NdFeB electroplating as claimed in claim 4, characterized in that: The number of the conductive plates is 4-8. When the roller drives the conductive disk to rotate, the conductive tile contacts one or two conductive plates.

6. A roller conductive device for NdFeB electroplating as claimed in claim 5, characterized in that: The end cap is a regular hexagonal end cap, and the radius of the conductive disk is less than or equal to the side length of the inner side of the end cap.

7. A roller conductive device for NdFeB electroplating as claimed in claim 6, characterized in that: An arc-shaped insulating portion is provided on the inner side of the conductive plate near the extending portion, and all the insulating portions form a ring structure.

8. A roller conductive device for NdFeB electroplating as claimed in claim 7, characterized in that: The outer diameter of the conductive disk is equal to the side length of the inner side of the end cover and the number of conductive plates is 8. The outer diameter of the conductive disk is 118.7mm, the outer diameter of the insulating part is 53.75mm, the inner diameter is 30mm, the width of the conductive tile is 6mm, the height is 15mm, and the spacing width between the conductive plates is 1mm.

9. A roller conductive device for NdFeB electroplating as claimed in claim 1, characterized in that: A bracket is arranged on the outer side of the end cover, the roller is rotatably arranged on the bracket, and the conductive tile is fixedly arranged on the bracket.

10. A roller conductive device for NdFeB electroplating as claimed in claim 9, characterized in that: A protective shell is arranged on the outer side of the bracket, and the protective shell is covered on the outer periphery of the conductive tile. The wire passes through the protective shell and is connected with the conductive tile.

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