Composite coating electroplating device and electroplating method

Abstract

The invention relates to the technical field of electroplating devices, and provides a composite coating electroplating device and method.The device comprises an electroplating pool, the bottom side of the electroplating pool is rotationally connected with a stirring shaft, the outer wall of the electroplating pool is slidably connected with a T-shaped plate, and the bottom side of the T-shaped plate is connected with the stirring shaft through a first gear set; the stirring shaft is used for controlling the stirring of the electroplating liquid in the electroplating tank; the supporting frame is arranged on the top side of the electroplating pool, a supporting rod is fixedly connected to the bottom side of the supporting frame, a guide rail is slidably connected to the outer wall of the supporting rod, a lead screw motor is arranged on the top side of the supporting frame, and the guide rail is in threaded connection to the driving end of the lead screw motor. A workpiece in the electroplating tank can flexibly move and rotate, so that the electroplating liquid is in comprehensive contact with the workpiece, and a plating layer is uniform; meanwhile, workpiece movement is matched with stirring shaft operation, electroplating liquid components are uniform, and efficiency is stable; in addition, the mounting shaft regulates the cathode conducting rod to facilitate feeding and discharging, and the overall efficiency of the production line is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electroplating devices, and specifically to a composite coating electroplating device and an electroplating method. Background Art

[0002] In many industrial fields today, such as automobile manufacturing, electronics, aerospace, etc., the surface treatment of metal parts plays a vital role. As a key surface treatment technology, electroplating is widely used to improve the corrosion resistance, wear resistance, decorativeness, conductivity and other properties of parts to meet the stringent requirements of product quality and service life under different working conditions. The principle is to use electrolysis to deposit metal or alloy on the surface of the workpiece to form a coating with special properties, giving the product additional value, which makes electroplating equipment an indispensable key equipment in modern manufacturing production lines.

[0003] When processing workpieces, traditional electroplating devices mostly use a fixed workpiece method, and the workpiece is stationary in the electroplating solution, which results in the contact between the electroplating solution and the workpiece being limited to part of the surface, which can easily cause the problem of uneven local electroplating. Since the workpiece cannot move, its side, top and bottom surfaces are difficult to interact with the electroplating solution in all directions, resulting in uneven coating thickness and uneven quality, which seriously affects the performance stability of the product. Furthermore, the existing electroplating solution stirring method is also unsatisfactory. Metal ions, additives and other substances in the electroplating solution are often affected by gravity or chemical reactions due to lack of effective mixing, and accumulate at the bottom of the electroplating tank or in local areas, resulting in uneven composition of the electroplating solution. In this way, not only the electroplating efficiency is reduced, but also the coating quality is difficult to control. In addition, in the loading and unloading links of the workpiece, the existing technology often relies on manual operation, and the installation shaft and the cathode conductive rod lack a flexible linkage design. Workers need to spend a lot of time and energy to accurately hang and remove the workpiece, which greatly restricts the overall operation efficiency of the electroplating production line and is difficult to meet the large-scale, high-efficiency and high-quality production needs of modern industry. Summary of the invention

[0004] In response to the shortcomings of the prior art, the present application provides a composite coating electroplating device and an electroplating method, which solve the problems that the workpiece is fixed and the contact with the electroplating liquid is not comprehensive, resulting in uneven coating and uneven quality, affecting product performance; the electroplating liquid is not stirred well, metal ions are easily accumulated and the composition is uneven, which reduces the electroplating efficiency and coating quality; and the loading and unloading of materials rely on manual labor, and the linkage between the installation shaft and the cathode conductive rod is poor, which restricts the efficiency of the production line and is difficult to meet the needs of modern industry.

[0005] To achieve the above objectives, the present application is implemented through the following technical solutions: A composite coating electroplating device, comprising: An electroplating cell, wherein the bottom side of the electroplating cell is rotatably connected to a stirring shaft, the outer wall of the electroplating cell is slidably connected to a T-shaped plate, and the bottom side of the T-shaped plate is connected to the stirring shaft through a gear set 1, so as to control the stirring shaft to stir the electroplating solution in the electroplating cell; A support frame, wherein the support frame is arranged on the top side of the electroplating tank, a support rod is fixedly connected to the bottom side of the support frame, a guide rail is slidably connected to the outer wall of the support rod, a lead screw motor is arranged on the top side of the support frame, the guide rail is threadedly connected to the driving end of the lead screw motor, a slider is slidably connected to the inner wall of the guide rail, one side of the slider is provided with a driving component for controlling the sliding of the slider, and the slider is connected to a T-shaped plate through a linkage component for controlling the sliding of the T-shaped plate on the outer wall of the electroplating tank; An installation shaft, wherein the installation shaft is rotatably connected to the outer wall of the slider, the installation shaft is connected to the guide rail through gear set two to control the rotation of the installation shaft, the front end of the bottom side of the installation shaft is rotatably connected to the cathode conductive rod, the rear end of the bottom side of the installation shaft is rotatably connected to the transmission rod, the transmission rod and the cathode conductive rod are connected through a synchronization component to control the rotation of the cathode conductive rod, a suspension component is provided on the bottom side of the cathode conductive rod to suspend a composite-plated workpiece, and the transmission rod is connected to the guide rail through gear set three to control the rotation of the transmission rod.

[0006] Preferably, the gear set 1 includes a stirring gear fixedly connected to the outer wall of the stirring shaft and a stirring tooth plate fixedly connected to the bottom side of the T-shaped plate, and the stirring shaft and the stirring tooth plate are meshingly connected.

[0007] Preferably, the driving assembly comprises a reciprocating threaded rod rotatably connected to one side of the guide rail, wherein the slider on one side is threadedly connected to the outer wall of the reciprocating threaded rod, and a driving motor is provided at one end of the reciprocating threaded rod.

[0008] Preferably, the linkage assembly includes a sliding block slidably connected to the outer wall of the support frame, the bottom side of the sliding block is fixedly connected to a sleeve sliding rod, the sliding block is slidably connected to the outer wall of the sleeve sliding rod, and the bottom side of the sleeve sliding rod is fixedly connected to the top side of the T-shaped plate.

[0009] Preferably, the synchronization component includes a worm fixedly connected to the outer wall of the transmission rod and a worm wheel fixedly connected to the outer wall of the cathode conductive rod, and the worm wheel and the worm are meshingly connected.

[0010] Preferably, the suspension assembly comprises a pin arranged at the bottom end of the cathode conductive rod, and a hook is arranged on the outer wall of the pin.

[0011] Preferably, the gear set 2 comprises a rotating tooth plate fixedly connected to the outer wall of the mounting shaft and fixedly connected to the front end of the guide rail, and the rotating tooth plate and are meshingly connected.

[0012] Preferably, the gear set three includes a driven gear plate fixedly connected to the bottom side of the guide rail and a driven gear fixedly connected to the outer wall of the mounting shaft, and the driven gear and the driven gear plate are meshingly connected.

[0013] A composite coating electroplating method comprises the following steps: Step 1: first pour the prepared electroplating solution into the electroplating tank, and then hang the workpiece at the bottom end of the cathode conductive rod, including pulling out the pin from the bottom end of the cathode conductive rod, and then hanging the hook on the workpiece, and then passing the hook and the cathode conductive rod through the pin to hang the workpiece at the bottom end of the cathode conductive rod, and then start the drive motor to control the reciprocating threaded rod to rotate and drive the slider and the mounting shaft and the suspended workpiece to move to the inside of the electroplating tank, and then start the screw motor to control the workpiece to immerse in the electroplating solution inside the electroplating tank; Step 2, heating the internal electroplating solution of the electroplating tank to a suitable temperature, and then energizing the electroplating solution in the electroplating tank to start electroplating the workpiece. When the workpiece starts to be electroplated, the rotation of the reciprocating threaded rod is controlled by starting the drive motor to drive the slider and the mounting shaft to slide on the inner wall of the guide rail. The movable mounting shaft can control the meshing between the driven gear and the driven tooth plate, thereby controlling the rotation of the transmission rod, and then controlling the rotation of the worm through the transmission rod. Through the meshing between the worm and the worm wheel, the workpiece suspended at the bottom end of the cathode conductive rod is controlled to rotate. At this time, the workpiece can move the electroplating liquid in the electroplating tank through the movement of the mounting shaft, and the movable slider can drive the movement of the sleeve slide rod and the sliding block, and drive the movement of the T-plate and the stirring tooth plate. Through the meshing between the stirring tooth plate and the stirring gear, the rotation of the stirring shaft in the electroplating tank is controlled to stir the electroplating liquid inside the electroplating tank. Step three, control the slider, the mounting shaft and the suspended workpiece to move to the front end of the electroplating tank through the reciprocating threaded rod, and then control the engagement between the moving slider and the mounting shaft and the rotating tooth plate to control the rotation of the mounting shaft on the outer wall of the slider, so as to drive the suspended workpiece to be fished out of the electroplating liquid inside the electroplating tank, and then complete the electroplating operation on the workpiece by removing the electroplated workpiece from the hook.

[0014] The present application provides a composite coating electroplating device and electroplating method, which have the following beneficial effects: The present application flexibly moves and rotates the workpiece in the electroplating pool. When the workpiece moves, each part of its body can contact the electroplating solution in turn, avoiding the problem of uneven local electroplating caused by being fixed. At the same time, the rotating action allows the surface of the workpiece to be fully exposed to the electroplating solution, whether it is the side, top or bottom, it can fully interact with the electroplating solution. In this way, the contact between the electroplating solution and the workpiece becomes more comprehensive, uniform and sufficient, which effectively guarantees the final effect of the electroplating work and enables the surface of the workpiece to be evenly plated with a high-quality coating.

[0015] The present application realizes the coordination with the operation of the stirring shaft through the movement of the workpiece. The stirring shaft rotates continuously in the composite electroplating solution, turning the electroplating solution to make various substances inside, such as metal ions, additives, etc., evenly dispersed in every corner of the electroplating solution. In this way, substances that may have been accumulated at the bottom or local areas of the electroplating pool due to gravity or chemical reactions can be fully mixed and evenly mixed, avoiding the problem of uneven composition of the electroplating solution due to material accumulation, which in turn affects the electroplating efficiency of the workpiece, and comprehensively ensuring the efficient and stable advancement of the electroplating process.

[0016] The present application reasonably controls the rotation direction of the installation shaft so that the cathode conductive rod can adjust its position accordingly, thereby facilitating the staff to hang the workpiece to be electroplated steadily at the designated position; and when the electroplating process is completed, the cathode conductive rod is driven to rotate by the installation shaft again, so that the electroplated workpiece can be easily removed from the hanging position, and the entire loading and unloading process is more convenient and efficient, which greatly improves the overall operating efficiency of the electroplating production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of this application; Figure 2 for Figure 1 A in the enlarged view; Figure 3 This is a schematic diagram of the support frame structure of this application; Figure 4 for Figure 3 The enlarged view of point B in the figure; Figure 5 This is a schematic diagram of the three-dimensional structure from another viewing angle of the present application; Figure 6 for Figure 5 Enlarged view of point C in the figure; Figure 7 This is a schematic diagram of the guide rail structure of this application; Figure 8 for Figure 7 The enlarged view of point D in the figure; Fig. 9 This is a schematic diagram of the transmission rod structure of this application; Fig.10 This is a schematic diagram of the stirring shaft structure of the present application.

[0018] Among them, 1. electroplating tank; 2. support frame; 3. guide rail; 4. drive motor; 5. mounting shaft; 6. slider; 7. sliding rod; 8. T-shaped plate; 9. stirring gear; 10. screw motor; 11. cathode conductive rod; 12. transmission rod; 13. worm; 14. worm wheel; 15. rotating gear plate; 16. driven gear; 17. driven gear plate; 18. reciprocating threaded rod; 19. rotating gear; 20. latch; 21. hook; 22. stirring shaft; 23. stirring gear plate; 24. support rod; 25. sliding block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] Example: As one aspect of this application, please see the attached Figure 1 , Attachment Figure 3 and attached Fig.10 , the embodiment of the present application provides a composite coating electroplating device, comprising: The bottom side of the electroplating tank 1 is rotatably connected with a stirring shaft 22, the outer wall of the electroplating tank 1 is slidably connected with a T-shaped plate 8, a stirring gear 9 is fixedly connected to the outer wall of the stirring shaft 22, and a stirring tooth plate 23 is fixedly connected to the bottom side of the T-shaped plate 8, and the stirring shaft 22 and the stirring tooth plate 23 are meshedly connected to control the stirring shaft 22 to stir the electroplating solution inside the electroplating tank 1; Specifically, when the device is running, the T-shaped plate 8 will produce corresponding movement, which can drive the stirring tooth plate 23 to synchronously displace along the outer wall of the electroplating pool 1. Due to the meshing between the stirring tooth plate 23 and the stirring gear 9, when the stirring tooth plate 23 moves, the meshing action between the two is activated, thereby driving the stirring shaft 22 to rotate on the bottom inner wall of the electroplating pool 1. The stirring shaft 22 can continue to fully stir the electroplating solution inside the electroplating pool 1. In this way, various substances in the electroplating solution, such as metal ions, additives, etc., will not sink to the bottom due to gravity. It effectively avoids the negative impact of uneven composition of the electroplating solution on the electroplating effect of the workpiece coating, and comprehensively guarantees the electroplating quality, so that each workpiece can obtain a uniform and high-quality coating.

[0021] Please see attached Figure 3 -Attached Figure 5, support frame 2, support frame 2 is arranged on the top side of electroplating pool 1, support frame 2 is fixedly connected with support rod 24 on the bottom side, guide rail 3 is slidably connected with the outer wall of support rod 24, and screw motor 10 is arranged on the top side of support frame 2, and guide rail 3 is threadedly connected with the driving end of screw motor 10, please refer to the attached Figure 5 and attached Figure 6 , a reciprocating threaded rod 18 is rotatably connected to one side of the guide rail 3, wherein a slider 6 on one side is threadedly connected to the outer wall of the reciprocating threaded rod 18, a driving motor 4 is provided at one end of the reciprocating threaded rod 18 to control the sliding of the slider 6, a sliding block 25 is slidably connected to the outer wall of the support frame 2, a sleeve sliding rod 7 is fixedly connected to the bottom side of the sliding block 25, the slider 6 is slidably connected to the outer wall of the sleeve sliding rod 7, and the bottom side of the sleeve sliding rod 7 is fixedly connected to the top side of the T-shaped plate 8 to control the sliding of the T-shaped plate 8 on the outer wall of the electroplating tank 1; Specifically, the guide rail 3 can be driven to move up and down along the outer wall of the support rod 24 by the screw motor 10, and the guide rail 3 drives the slider 6, the mounting shaft 5 and the workpiece to be plated to move up and down synchronously. In this way, no matter how the size of the workpiece changes, it can be ensured that it is smoothly immersed in the electroplating solution, which greatly broadens the scope of application of the device. At the same time, the start of the drive motor 4 can control the rotation of the reciprocating threaded rod 18. Since the reciprocating threaded rod 18 and the slider 6 are threadedly connected, as the threaded rod rotates, the slider 6 and the mounting shaft 5 will move in an orderly manner inside the guide rail 3, and then pull the suspended workpiece to move inside the electroplating pool 1. And when the slider 6 moves back and forth inside the guide rail 3, it not only changes its own position, but also drives the sliding block 25 and the sleeve sliding rod 7 to move synchronously on the outer wall of the support frame 2, and the sleeve sliding rod 7 further drives the T-shaped plate 8 to move steadily on the outer wall of the electroplating pool 1, and the slider 6 can also slide up and down smoothly on the outer wall of the sleeve sliding rod 7, ensuring that the entire device runs smoothly and efficiently.

[0022] Please see attached Figure 1 , Attachment Figure 2 and attached Figure 5 , the mounting shaft 5 is rotatably connected to the outer wall of the slider 6, a rotating gear 19 fixedly connected to the outer wall of the mounting shaft 5 and a rotating toothed plate 15 fixedly connected to the front end of the guide rail 3, the rotating toothed plate 15 and the rotating gear 19 are meshingly connected to control the rotation of the mounting shaft 5, the bottom front end of the mounting shaft 5 is rotatably connected to the cathode conductive rod 11, the bottom rear end of the mounting shaft 5 is rotatably connected to the transmission rod 12, the worm 13 fixedly connected to the outer wall of the transmission rod 12 and the worm wheel 14 fixedly connected to the outer wall of the cathode conductive rod 11, the worm wheel 14 and the worm 13 are meshingly connected to control the rotation of the cathode conductive rod 11, please refer to the attached Figure 7 -Attached Fig. 9The plug 20 is arranged at the bottom end of the cathode conductive rod 11, and the outer wall of the plug 20 is provided with a hook 21 for hanging the composite plated workpiece. Figure 4 -Attached Figure 6 A driven gear plate 17 is fixedly connected to the bottom side of the guide rail 3 and a driven gear 16 is fixedly connected to the outer wall of the mounting shaft 5. The driven gear 16 and the driven gear plate 17 are meshedly connected to control the rotation of the transmission rod 12.

[0023] Specifically, when the slider 6 slides inside the guide rail 3, it will drive the movement of the installation shaft 5. The transmission rod 12 on the bottom side of the installation shaft 5 can drive the rotation of the transmission rod 12 on the bottom side of the installation shaft 5 through the engagement between the driven gear 16 and the driven tooth plate 17. The rotation of the worm 13 and the engagement between the worm wheel 14 can drive the cathode conductive rod 11 to rotate on the bottom side of the installation shaft 5, and the workpiece suspended at the bottom end of the cathode conductive rod 11 can be driven to rotate in the electroplating liquid in the electroplating tank 1, which can ensure that the workpiece is in more comprehensive contact with the electroplating liquid, ensuring better efficiency of the electroplating of its coating. When the slider 6 and the installation shaft 5 move to the front end inside the guide rail 3, the driven gear 16 and the driven tooth plate 17 are no longer meshed, and the rotating gear 19 will mesh with the rotating tooth plate 15, driving the rotation of the rotating gear 19 to drive the installation shaft 5 to rotate on the outer wall of the slider 6, driving the cathode conductive rod 11 and the hook 21 to rotate, and then the workpiece suspended by the hook 21 is loaded and unloaded. When the workpiece is suspended by the hook 21, the pin 20 can be pulled out from the bottom end of the cathode conductive rod 11 and the top end of the hook 21, and then the hook 21 is hooked on the top end of the workpiece, and then the pin 20 is passed through the top end of the hook 21 and the bottom end of the cathode conductive rod 11 in turn, and then the pin 20 is fixed by bolts, so as to realize the suspension of the workpiece to be electroplated.

[0024] As another aspect of the present application, the present application provides a composite coating electroplating method, comprising the following steps: Step 1, first pour the prepared electroplating solution into the electroplating tank 1, hang the workpiece at the bottom end of the cathode conductive rod 11, pull out the pin 20 from the bottom end of the cathode conductive rod 11, hang the hook 21 on the workpiece, and then pass the hook 21 and the cathode conductive rod 11 through the pin 20 in sequence to hang the workpiece at the bottom end of the cathode conductive rod 11, and then start the drive motor 4 to control the rotation of the reciprocating threaded rod 18 to control the movement of the slider 6 and the mounting shaft 5 inside the guide rail 3, drive the suspended workpiece to move into the electroplating tank 1, and then start the screw motor 10 to control the workpiece to be immersed in the electroplating solution inside the electroplating tank 1.

[0025] Step 2: Heat the internal plating solution of the plating tank 1 to a suitable temperature, and then energize the plating solution in the plating tank 1 to start plating the workpiece. When the workpiece starts to be electroplated, the reciprocating threaded rod 18 is driven to rotate by starting the driving motor 4, thereby controlling the slider 6 and the mounting shaft 5 to slide on the inner wall of the guide rail 3. At the same time, the mounting shaft 5 can drive the transmission rod 12 on its bottom side to rotate through the meshing between the driven gear 16 and the driven gear plate 17. The rotation of the transmission rod 12 is achieved through the meshing between the worm 13 and the worm wheel 14. The workpiece suspended at the bottom of the cathode conductive rod 11 can be controlled to rotate, thereby controlling the suspended workpiece to rotate while moving inside the electroplating tank 1, ensuring that the workpiece is in more comprehensive contact with the electroplating liquid, thereby avoiding incomplete contact between the workpiece and the electroplating liquid that affects the electroplating effect on the workpiece. The moving slider 6 drives the movement of the stirring tooth plate 23, thereby controlling the rotation of the stirring shaft 22 in the electroplating tank 1 to stir the electroplating liquid inside the electroplating tank 1, thereby avoiding the substances in the electroplating liquid from settling to the bottom and affecting the efficiency of electroplating on the workpiece.

[0026] Step three, control the slider 6, the mounting shaft 5 and the suspended workpiece to move to the front end of the electroplating tank 1 through the reciprocating threaded rod 18, and at the same time, through the engagement between the rotating gear 19 and the rotating toothed plate 15, the rotating gear 19 can control the rotation of the mounting shaft 5 on the outer wall of the slider 6, thereby driving the suspended workpiece to be fished out of the electroplating liquid inside the electroplating tank 1 and the rotation of the cathode conductive rod 11, and then completing the electroplating operation on the workpiece by removing the electroplated workpiece from the hook 21.

[0027] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A composite coating electroplating device, characterized in that: include: An electroplating pool (1), wherein the bottom side of the electroplating pool (1) is rotatably connected to a stirring shaft (22), the outer wall of the electroplating pool (1) is slidably connected to a T-shaped plate (8), and the bottom side of the T-shaped plate (8) is connected to the stirring shaft (22) via a gear set 1, so as to control the stirring shaft (22) to stir the electroplating solution inside the electroplating pool (1); A support frame (2), wherein the support frame (2) is arranged on the top side of the electroplating tank (1), a support rod (24) is fixedly connected to the bottom side of the support frame (2), a guide rail (3) is slidably connected to the outer wall of the support rod (24), a lead screw motor (10) is arranged on the top side of the support frame (2), the guide rail (3) is threadedly connected to the driving end of the lead screw motor (10), a slider (6) is slidably connected to the inner wall of the guide rail (3), one side of the slider (6) is provided with a driving component for controlling the sliding of the slider (6), and the slider (6) is connected to a T-shaped plate (8) via a linkage component for controlling the sliding of the T-shaped plate (8) on the outer wall of the electroplating tank (1); A mounting shaft (5) is rotatably connected to the outer wall of the slider (6); the mounting shaft (5) is connected to the guide rail (3) via a second gear set to control the rotation of the mounting shaft (5); the front end of the bottom side of the mounting shaft (5) is rotatably connected to a cathode conductive rod (11); the rear end of the bottom side of the mounting shaft (5) is rotatably connected to a transmission rod (12); the transmission rod (12) and the cathode conductive rod (11) are connected via a synchronization component to control the rotation of the cathode conductive rod (11); a suspension component is provided on the bottom side of the cathode conductive rod (11) to suspend a composite-plated workpiece; the transmission rod (12) is connected to the guide rail (3) via a third gear set to control the rotation of the transmission rod (12).

2. A composite coating electroplating device according to claim 1, characterized in that: The gear set 1 comprises a stirring gear (9) fixedly connected to the outer wall of the stirring shaft (22) and a stirring tooth plate (23) fixedly connected to the bottom side of the T-shaped plate (8), and the stirring shaft (22) and the stirring tooth plate (23) are meshingly connected.

3. A composite coating electroplating device according to claim 1, characterized in that: The driving assembly comprises a reciprocating threaded rod (18) rotatably connected to one side of the guide rail (3), wherein the slider (6) on one side is threadedly connected to the outer wall of the reciprocating threaded rod (18), and a driving motor (4) is provided at one end of the reciprocating threaded rod (18).

4. A composite coating electroplating device according to claim 1, characterized in that: The linkage assembly comprises a sliding block (25) slidably connected to the outer wall of the support frame (2), the bottom side of the sliding block (25) is fixedly connected to a sleeve sliding rod (7), the sliding block (6) is slidably connected to the outer wall of the sleeve sliding rod (7), and the bottom side of the sleeve sliding rod (7) is fixedly connected to the top side of the T-shaped plate (8).

5. The composite coating electroplating device according to claim 1, characterized in that: The synchronization component comprises a worm (13) fixedly connected to the outer wall of the transmission rod (12) and a worm wheel (14) fixedly connected to the outer wall of the cathode conductive rod (11); the worm wheel (14) and the worm (13) are meshingly connected.

6. A composite coating electroplating device according to claim 1, characterized in that: The suspension assembly comprises a latch (20) arranged at the bottom end of the cathode conductive rod (11), and a hook (21) is arranged on the outer wall of the latch (20).

7. A composite coating electroplating device according to claim 1, characterized in that: The second gear set comprises a rotating gear (19) fixedly connected to the outer wall of the mounting shaft (5) and a rotating toothed plate (15) fixedly connected to the front end of the guide rail (3); the rotating toothed plate (15) and the rotating gear (19) are meshingly connected.

8. The composite coating electroplating device according to claim 1, characterized in that: The gear set three comprises a driven gear plate (17) fixedly connected to the bottom side of the guide rail (3) and a driven gear (16) fixedly connected to the outer wall of the mounting shaft (5), and the driven gear (16) and the driven gear plate (17) are meshingly connected.

9. A composite coating electroplating method, using a composite coating electroplating device as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: first, pour the prepared electroplating solution into the electroplating tank (1), then suspend the workpiece at the bottom end of the cathode conductive rod (11), then start the drive motor (4) to control the suspended workpiece to move into the electroplating tank (1), and then start the screw motor (10) to control the workpiece to immerse in the electroplating solution in the electroplating tank (1); Step 2: The electroplating solution in the electroplating tank (1) is heated to a suitable temperature, and then the electroplating solution in the electroplating tank (1) is energized to start electroplating the workpiece. When the workpiece is electroplated, the driving motor (4) is started to control the slider (6) and the mounting shaft (5) to slide on the inner wall of the guide rail (3), and the transmission rod (12) rotates synchronously. The rotation of the transmission rod (12) controls the workpiece suspended at the bottom end of the cathode conductive rod (11) to rotate, and the moving slider (6) drives the movement of the stirring tooth plate (23), so as to control the rotation of the stirring shaft (22) in the electroplating tank (1) to stir the electroplating solution in the electroplating tank (1); Step three, the reciprocating threaded rod (18) is used to control the slider (6), the mounting shaft (5) and the suspended workpiece to move to the front end of the electroplating tank (1), and the mounting shaft (5) is controlled to rotate on the outer wall of the slider (6) to drive the suspended workpiece out of the electroplating liquid in the electroplating tank (1), and then the electroplating operation on the workpiece is completed by removing the electroplated workpiece from the hook (21).

10. A composite coating electroplating method according to claim 9, characterized in that: The step of hanging the workpiece at the bottom end of the cathode conductive rod (11) in step one comprises pulling the latch (20) out of the bottom end of the cathode conductive rod (11), hanging the hook (21) on the workpiece, and then passing the latch (20) through the hook (21) and the cathode conductive rod (11) to hang the workpiece at the bottom end of the cathode conductive rod (11).

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