A barrel device for barrel plating

Abstract

The application relates to a barrel plating device technical field, in particular to a barrel plating roller device, which comprises a prism barrel, a bearing assembly, a driving assembly and a plurality of arc-shaped plates, the bearing assembly comprises two symmetrically arranged side plates, the prism barrel is rotationally connected between the two side plates, a plurality of the arc-shaped plates are arranged at the included angle between two adjacent planes in the prism barrel, and the included angle is replaced by a continuous arc surface structure, so that the hard collision between the workpiece and the prism barrel corner is reduced, the impact force is uniformly diffused, the local pressure is reduced, the buffering and protection effects are achieved, and the application has the characteristics of improving the electroplating quality.

Description

Technical Field

[0001] This application relates to the field of barrel plating equipment technology, and in particular to a barrel plating drum device. Background Technology

[0002] Barrel plating, also known as drum electroplating, involves placing a certain number of small parts inside a special drum. As the parts roll, gravity presses them against a cathode conductive device inside the drum, depositing various metal or alloy coatings on the surface through indirect conductivity. This achieves surface protection, decoration, and various functional purposes. The circulation of plating solution and the emission of exhaust gas during the electroplating process are achieved through holes in the drum wall.

[0003] Among related technologies, barrel plating is widely used in electronics, hardware, automotive parts and other fields due to its high efficiency and uniform plating effect. The barrel structures commonly used in barrel plating mainly include prismatic barrels and cylindrical barrels: the former is a polygonal barrel composed of multiple planes, which has a simple structure but a large impact when the workpiece is flipped; the latter is a cylindrical barrel, which allows for a smoother workpiece flipping but results in poor electroplating uniformity.

[0004] The existing barrel plating equipment has the following problems: When the workpiece is flipped, the workpiece falls directly from one plane to another, and the resulting impact force can easily cause the barrel to deform or be damaged, thus affecting the plating uniformity and barrel life; although the round barrel can reduce the impact, the plating uniformity is poor. Utility Model Content

[0005] To improve electroplating quality, this application provides a barrel plating apparatus.

[0006] The technical solution of the barrel plating device provided in this application is as follows: A barrel plating device includes a prismatic cylinder, a support assembly, a drive assembly, and multiple arc-shaped plates. The support assembly includes two symmetrically arranged side plates. The two ends of the prismatic cylinder are rotatably connected between the two side plates. The multiple arc-shaped plates are arranged at the included angle between two adjacent planes inside the prismatic cylinder, and the included angle is replaced with a continuous arc surface structure.

[0007] By adopting the above solution, the arc plate reduces the hard collision between the workpiece and the corner of the cylinder, and also uses the arc surface to evenly diffuse the impact force, thereby reducing the local pressure and playing a buffering and protective role, which indirectly improves the electroplating quality.

[0008] Preferably, at least two sets of the arc-shaped plates are detachable along the length direction at the included angle inside the prismatic cylinder, and the arc transition section of adjacent arc-shaped plates forms a continuous curved surface structure.

[0009] By adopting the above scheme, the number of arc plate groups can be increased or decreased in sections according to the workpiece size or process requirements, which improves flexibility and convenience. When the workpiece is flipped, it slides along the continuous curved surface, and the impact force is more evenly distributed.

[0010] Preferably, the surface of the arc-shaped plate is provided with a wear-resistant coating, and the radius of curvature of the arc-shaped plate is greater than the maximum outer diameter of the workpiece inside the prismatic cylinder.

[0011] By adopting the above solution, friction and wear between the workpiece and the arc plate are reduced, and the service life of the arc plate is extended.

[0012] Preferably, the corner of the arc-shaped plate near the inner wall of the prismatic cylinder is rounded.

[0013] By adopting the above solution, mechanical interference with the inner wall of the prismatic cylinder is reduced, thus lowering the risk of jamming when the workpiece is flipped.

[0014] Preferably, one side of the prismatic cylinder is open and fitted with a cylinder cover of a suitable length. One end of the cylinder cover is hinged to the prismatic cylinder, and the other end of the cylinder cover is provided with a snap-fit ​​component. The prismatic cylinder is provided with a snap-fit ​​groove in the length direction corresponding to the snap-fit ​​component.

[0015] By adopting the above solution, the ease of opening and closing and the reliability of sealing are improved.

[0016] Preferably, the outer wall of the prismatic cylinder and the surface of the cylinder cover are provided with holes, which are circular or rectangular holes that are equidistantly arranged and uniformly distributed.

[0017] By adopting the above scheme, the rolling trajectory of the workpiece can be made regular and controllable, reducing the occurrence of jamming or accumulation caused by uneven hole distribution.

[0018] Preferably, the load-bearing assembly further includes a frame, a lifting rod, and two support rods. The lifting rod and the two support rods are all transversely penetrating the two side plates and fixed to the frame. The lifting rod, the support rods, and the prismatic cylinder are arranged at intervals from top to bottom in the vertical direction.

[0019] By adopting the above scheme, a dual damping structure is formed, which effectively reduces the amplitude of the cylinder under rotating conditions and the operating noise, and improves the dynamic load capacity.

[0020] Preferably, the drive assembly includes a drive shaft and a drive wheel. The two ends of the drive shaft are movably connected between the two side plates via bearings. The drive wheel is rotatably connected to both ends of the drive shaft. The two ends of the prismatic cylinder are respectively provided with driven wheels that mesh with the drive wheel. The portion of the drive shaft extending out of the side plates is externally connected to a drive device.

[0021] By adopting the above scheme and optimizing the transmission structure, the smooth rotation of the prismatic roller is achieved, ensuring the uniformity of the coating and further improving the electroplating quality.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The curved plate reduces the hard collision between the workpiece and the corner of the cylinder, and also uses the curved surface to evenly spread the impact force, thereby reducing the local pressure and playing a buffering and protective role, which indirectly improves the electroplating quality. 2. Improved the convenience, flexibility, and reliability of the device; 3. It reduces mechanical damage to workpieces and devices, lowers maintenance frequency, and extends service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating the use scenario of the curved plate in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Load-bearing component; 11. Frame; 12. Side plate; 13. Lifting rod; 14. Support rod; 2. Drive component; 21. Drive shaft; 22. Drive wheel; 23. Driven wheel; 24. Motor; 3. Prismatic cylinder; 31. Arc plate; 32. Cylinder cover; 321. Snap-fit ​​component; 322. Slot; 33. Hole. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses a barrel plating apparatus. (Refer to...) Figure 1-2 A barrel plating device includes a prismatic cylinder 3, a support component 1, a drive component 2, and a plurality of arc plates 31. In this embodiment, the cross-section of the prismatic cylinder 3 is a regular hexagon, and a total of twelve arc plates 31 made of stainless steel are provided. The support component 1 includes two symmetrically arranged side plates 12. The two ends of the prismatic cylinder 3 are rotatably connected between the two side plates 12. The twelve arc plates 31 are installed in pairs at the included angle between two adjacent planes inside the prismatic cylinder 3, and the included angle is replaced with a continuous arc surface structure.

[0028] Therefore, the arc plate 31 can use the arc surface to disperse the impact force to a larger contact area, reduce the local pressure, and absorb part of the impact kinetic energy through elastic deformation, thereby reducing the hard collision between the workpiece and the corner of the cylinder. When the workpiece slides down the arc surface, the speed change is more gradual.

[0029] Furthermore, the continuous arc surface structure reduces the plating solution eddies and dead corners at the corners inside the cylinder, improves the plating solution renewal efficiency, reduces the risk of cylinder corrosion caused by local metal ion depletion, and at the same time, it reduces the current spikes at the corners compared with the traditional drum structure, making the current density distribution more uniform.

[0030] In summary, by utilizing the geometric optimization and material adaptation of the arc plate 31, this device combines the dispersion and absorption of the impact energy of the workpiece, which not only protects the integrity of the cylinder structure but also improves the distribution of current and plating solution, ensuring the uniformity and consistency of the workpiece coating and effectively improving the electroplating quality.

[0031] Specifically, in this embodiment, each pair of arc plates 31 are installed along the length direction at the included angle of the prismatic cylinder 3 via a quick-release structure, and the arc transition section of adjacent arc plates 31 forms a continuous curved surface structure.

[0032] Correspondingly, the quick-release structure supports the segmented disassembly and replacement of the arc plate 31, which facilitates maintenance and adapts to different process requirements. Operators can add or remove the number of arc plates 31 in segments according to the workpiece size or production requirements, which improves flexibility and convenience.

[0033] Furthermore, the continuous curved surface formed by the arc transition section of the adjacent arc plate 31 reduces the eddy current phenomenon at the joint compared with the segmented design, thereby reducing the flow resistance of the plating solution. At the same time, it also reduces the occurrence of current concentration at the joint and improves the current density deviation rate in the prismatic cylinder 3.

[0034] Specifically, the surface of the arc plate 31 is provided with a wear-resistant coating (not shown in the attached figure) to reduce frictional loss between the workpiece and the arc plate 31, reduce plating solution impurities caused by the peeling of the metal surface of the arc plate 31, extend the service life of the arc plate 31, and improve the electroplating effect.

[0035] Furthermore, the radius of curvature of the arc plate 31 is greater than the maximum outer diameter of the workpiece inside the prismatic cylinder 3, ensuring that the workpiece maintains a gap with the arc plate 31 when it is flipped, thereby reducing jamming or scraping. The large radius of curvature also makes the workpiece slide trajectory smoother, reducing the peak impact force when the workpiece rolls and the vibration amplitude of the prismatic cylinder 3.

[0036] Meanwhile, the corners of the arc plate 31 near the inner wall of the prismatic cylinder 3 are rounded, which reduces the mechanical interference between the edge of the arc plate 31 and the inner wall of the prismatic cylinder 3. This progressive gap also facilitates the passage of the workpiece, further reducing the risk of jamming and surface wear.

[0037] On the other hand, one side of the prismatic cylinder 3 is open and fitted with a cylinder cover 32 of a suitable length. One end of the cylinder cover 32 is hinged to the prismatic cylinder 3, and the other end of the cylinder cover 32 is fixed with a snap-fit ​​member 321. The prismatic cylinder 3 has a slot 322 in the length direction corresponding to the snap-fit ​​member 321, which engages with the snap-fit ​​member 321.

[0038] Therefore, this structure achieves rapid opening and closing and complete sealing of the prismatic cylinder 3 through a hinge-clamp composite design, which facilitates the loading and unloading of workpieces by operators and reduces the occurrence of plating solution splashing and gas escape, effectively improving the ease of operation and sealing reliability.

[0039] Specifically, in this embodiment, rectangular holes 33 are distributed evenly spaced and uniformly arranged on the outer wall of the prismatic cylinder 3 and the surface of the cylinder cover 32. These holes 33 serve as current transmission channels and plating solution exchange channels, ensuring a stable metal ion concentration inside the prismatic cylinder 3, reducing the risk of local plating solution aging, and always maintaining an effective connection with the cathode conductive device, thereby reducing plating defects caused by poor contact.

[0040] Furthermore, the uniformly distributed holes 33 help to remove waste gases such as hydrogen generated during the electroplating process in a timely manner, reduce gas pressure fluctuations inside the cylinder, reduce pinholes in the coating, and at the same time, make the workpiece tumbling trajectory regular and controllable, reducing the risk of jamming or accumulation caused by uneven distribution of holes 33.

[0041] In the process described above, the load-bearing component 1 also includes a frame 11, a lifting rod 13, and two support rods 14. The lifting rod 13 and the two support rods 14 are all horizontally inserted through the two side plates 12 and fixed to the frame 11. The lifting rod 13, the support rods 14, and the prismatic cylinder 3 are arranged at intervals from top to bottom in the vertical direction.

[0042] Correspondingly, in this embodiment, the lifting rod 13 is used to connect with the external lifting device to facilitate the rapid lifting and lowering of the prismatic roller 3, shorten the time for it to enter and exit the plating bath and improve operating efficiency. At the same time, the spaced arrangement of the lifting rod 13 and the support rod 14 forms a double shock absorption structure to withstand the radial load of the prismatic cylinder 3 during operation, effectively reducing the amplitude and operating noise of the cylinder under rotation conditions, reducing plating splash caused by vibration, and improving dynamic load capacity.

[0043] Furthermore, the lifting rod 13 also serves as the main conduction path for the cathode current. Its vertical arrangement with the support rod 14 and the prismatic cylinder 3 forms a current gradient distribution, causing the coating thickness to decrease from both ends of the cylinder to the middle, reducing coating thickness fluctuations and improving coating thickness consistency.

[0044] On the other hand, in this embodiment, the drive assembly 2 includes a drive shaft 21 and a drive wheel 22. The two ends of the drive shaft 21 are movably connected between the two side plates 12 through bearings. The drive wheel 22 is rotatably connected to the two ends of the drive shaft 21. The two ends of the prismatic cylinder 3 are respectively provided with driven wheels 23 that mesh with the drive wheel 22. The part of the drive shaft 21 that extends out of the side plate 12 is coaxially arranged with the motor 24.

[0045] Therefore, the motor 24 inputs power through the drive shaft 21. The drive shaft 21 rotates under the support of the bearing, which drives the driving wheels 22 at both ends to rotate synchronously. The driving wheels 22 then mesh with the driven wheels 23 at both ends of the prismatic cylinder 3, transmitting power to the driven wheels 23, and finally driving the prismatic cylinder 3 to rotate.

[0046] Correspondingly, the meshing design of the driving wheel 22 and the driven wheel 23 ensures the continuity and directional controllability of power transmission. The driven wheels 23 at both ends of the prismatic cylinder 3 eliminate the problem of motion loss caused by unilateral force through synchronous meshing, thereby reducing vibration and off-center load.

[0047] Furthermore, the bearing support reduces rotational friction resistance, while the side plate 12 provides a stable mounting reference for the drive shaft 21, reducing axial offset caused by load changes, and comprehensively enhancing the torsional stiffness and motion stability of the overall structure.

[0048] The implementation principle of the barrel plating device in this application embodiment is as follows: The device replaces the included angle with a continuous arc surface structure by adding an arc plate 31 at the included angle between two adjacent planes inside the prismatic cylinder 3. The arc plate 31 is used to uniformly diffuse the impact force, thereby reducing the mechanical wear between the workpiece and the included angle of the prismatic cylinder 3. At the same time, it reduces the plating solution eddies, dead angles and current spikes at the included angle inside the prismatic cylinder 3, thereby effectively improving the structural integrity of the cylinder, the renewal efficiency of the plating solution and the distribution rate of the current density, ensuring the uniformity and consistency of the plating layer on the workpiece, and comprehensively improving the electroplating quality.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A barrel plating apparatus, characterized in that, The device includes a prismatic cylinder (3), a support assembly (1), a drive assembly (2), and multiple arc plates (31). The support assembly (1) includes two symmetrically arranged side plates (12). The two ends of the prismatic cylinder (3) are rotatably connected between the two side plates (12). The multiple arc plates (31) are arranged at the included angle between two adjacent planes inside the prismatic cylinder (3), and the included angle is replaced with a continuous arc surface structure.

2. The barrel plating apparatus according to claim 1, characterized in that, At least two sets of arc-shaped plates (31) are detachable along the length direction at the included angle inside the prismatic cylinder (3), and the arc transition section of adjacent arc plates (31) forms a continuous curved surface structure.

3. The barrel plating apparatus according to claim 2, characterized in that, The surface of the arc plate (31) is provided with a wear-resistant coating, and the radius of curvature of the arc plate (31) is greater than the maximum outer diameter of the workpiece inside the prismatic cylinder (3).

4. The barrel plating apparatus according to claim 2, characterized in that, The corner of the arc plate (31) near the inner wall of the prismatic cylinder (3) is rounded.

5. The barrel plating apparatus according to claim 1, characterized in that, One side of the prismatic cylinder (3) is open and fitted with a cylinder cover (32) of the same length. One end of the cylinder cover (32) is hinged to the prismatic cylinder (3), and the other end of the cylinder cover (32) is provided with a snap-fit ​​member (321). The prismatic cylinder (3) is provided with a snap-fit ​​groove (322) in the length direction corresponding to the snap-fit ​​member.

6. The barrel plating apparatus according to claim 5, characterized in that, The outer wall of the prismatic cylinder (3) and the surface of the cylinder cover (32) are provided with holes (33), which are circular or rectangular holes that are equidistantly arranged and uniformly distributed.

7. The barrel plating apparatus according to claim 1, characterized in that, The bearing assembly (1) also includes a frame (11), a lifting rod (13) and two support rods (14). The lifting rod (13) and the two support rods (14) are all horizontally penetrating the two side plates (12) and fixed to the frame (11). The lifting rod (13), the support rods (14) and the prismatic cylinder (3) are arranged at intervals from top to bottom in the vertical direction.

8. The barrel plating apparatus according to claim 1, characterized in that, The drive assembly (2) includes a drive shaft (21) and a drive wheel (22). The two ends of the drive shaft (21) are movably connected between the two side plates (12) through bearings. The drive wheel (22) is rotatably connected to the two ends of the drive shaft (21). The two ends of the prismatic cylinder (3) are respectively provided with driven wheels (23) that mesh with the drive wheel (22). The part of the drive shaft (21) that extends out of the side plate (12) is externally connected to a drive device.

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