Automatic brush plating machine for a mutual inductor

Abstract

The present application relates to the technical field of electroplating brush plating, in particular to an automatic brush plating machine for a mutual inductor, comprising a brush plating mechanism, the brush plating mechanism comprising a chain and brush plating units installed on the chain at every fixed interval, the brush plating units being circulated along a flat closed loop route, wherein a local row of brush plating units controls and guides the cloth belt to present a continuous row of tooth bending shape, the continuous row of tooth section on the cloth belt contacts the mutual inductor below to perform brush plating, in the present application, a row of brush plating points is arranged on the cloth belt, the row of brush plating points passes above the terminal of the mutual inductor one by one, and multiple brush plating is quickly completed, the brush plating points are generated on one side of the terminal of the mutual inductor, after the terminal is brushed and plated, the brush plating points disappear on the other side of the mutual inductor, the brush plating part of the cloth belt can be repeatedly used, material waste is avoided, in addition, after the cloth belt locally completes the prescribed number of brush plating, the cloth belt is circulated by itself, so that the brush plating part is renewed.

Description

Technical Field

[0001] This invention relates to the field of electroplating and brush plating technology, specifically to an automatic brush plating machine for current transformers. Background Technology

[0002] The brush plating process used in the current transformer processing production line is mainly applied to the local tin plating, silver plating or repair processes of specific parts such as terminals and primary current carriers. It is used to protect and conduct electricity to the local contact surfaces of terminals and is often used as a substitute or supplement to traditional tank plating.

[0003] It can generate a localized wear-resistant and corrosion-resistant coating on the surface of the terminal block to improve the conductivity reliability of the terminal block; or it can precisely repair poor processing, coating defects or local damage after assembly without disassembling the whole component.

[0004] Brush plating of specific areas of the terminal contact surface can avoid the material waste and environmental pollution caused by the traditional tank plating process of immersing the whole part, and consume less plating solution; it can use high current density, so that the plating layer deposition rate is fast, and the resulting plating layer has finer grains, stronger adhesion, higher density, and excellent wear and corrosion resistance.

[0005] The principle of electroplating is to use a fabric or cotton swab wrapped around the anode to absorb a high-concentration electrolyte, and to move relative to the surface of the cathode workpiece. A high-density current causes metal ions to discharge, reduce, and crystallize, forming a localized plating layer—a tankless electrochemical process. In traditional processes, the anode sheath is prone to wear and requires frequent replacement, which is cumbersome and time-consuming. There is a need to develop an automatic anode sheath replacement technology that can quickly complete multiple plating cycles to meet the high-efficiency plating requirements of current production lines. Therefore, this invention provides an automatic electroplating machine for current transformers. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic brush plating machine for current transformers to solve the problem of cumbersome and time-consuming anode sleeve replacement mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic brush plating machine for current transformers, comprising a brush plating mechanism, a suspension connected above the brush plating mechanism, a robotic arm for driving the suspension to move, a cloth belt conveyed on the brush plating mechanism and used to absorb plating solution, a cloth release mechanism fixed at one end of the suspension for releasing the cloth belt, and a cloth winding mechanism fixed at the other end of the suspension for winding the cloth belt. The brush plating mechanism controls the cloth belt to brush plating the current transformers arranged below. The brush plating mechanism includes: The chain frame fixed to the suspension, the two end shafts supported on the chain frame, the sprockets fixed on the end shafts, and the chain supported by the two sprockets; The chain is equipped with brush plating units installed at fixed intervals. The brush plating units are circulated along a flat closed loop route. In a certain section, a row of brush plating units controls and guides the cloth belt to present a continuous toothed bend. The continuous toothed section on the cloth belt contacts the current transformer below to perform brush plating.

[0008] The brush plating mechanism also includes: The upper and lower rails are fixed on the chain frame and are used to guide and control the deformation of the passing brush plating unit; A conductive frame fixed on a chain frame, wherein a conductive straight plate is provided on the conductive frame to make contact with multiple brush plating units located in the continuous toothed section of the fabric belt for conducting electricity.

[0009] The brush plating mechanism also includes a liquid storage tank fixed on the chain frame, a liquid injection pipe fixedly connected to one side of the liquid storage tank, and a pressure block for pressing the brush plating unit passing over the liquid storage tank. The pressed brush plating unit collects plating liquid from the liquid storage tank, and the pressure block is fixed on the chain frame.

[0010] The brush plating unit includes a unit frame fixed on a chain, and a pressing cloth assembly, a roller, a coating liquid assembly, and a collection assembly simultaneously supported on the unit frame. The coating liquid assembly applies plating liquid to the cloth strip that will come into contact with the current transformer.

[0011] The pressing assembly includes an electrode rod for contacting and pressing the fabric strip, an insulating rail plate vertically fixed on the electrode rod, a conductive sheet fixed on the insulating rail plate, and a gear set for driving the insulating rail plate to rise and fall. One end of the conductive sheet is electrically connected to the electrode rod, and the other end of the conductive sheet located in the continuous toothed section of the fabric strip is in contact with the conductive frame for conduction. At the same time, the electrode rod located in the continuous toothed section of the fabric strip presses down on a part of the fabric strip, and thus the electrode rod and the roller are alternately distributed at the bend positions on the continuous toothed section of the fabric strip.

[0012] The coating component includes a liquid pipe fixed on a unit frame, a drain window fixedly connected to one end of the liquid pipe, and a second bracket for driving the drain window. The other end of the liquid pipe is connected to a collection component. The drain window meets and fits against a partial section of the fabric tape. The second bracket slides in a directional manner under the support of the unit frame.

[0013] The gear set slides along the flat closed-loop route groove on the upper track, and the height of the local route groove on the upper track located on the side of the continuous toothed section of the belt changes. The second bracket slides along the flat closed-loop route groove on the lower track, and the height of the local route groove on the lower track located on the side of the continuous toothed section of the belt changes.

[0014] The collection assembly includes a horizontal tube with one end movably connected to a liquid tube, a swing tube vertically fixed and connected to the other end of the horizontal tube, a spring for pushing the swing tube to reset, and a third support for driving the horizontal tube to rotate. The third support slides directionally on the unit frame, and the pressure block presses against the encountered third support. One end of the spring is fixed on the unit frame, and one end of the swing tube is a ladle structure for holding the plating solution stored in the liquid storage tank.

[0015] The gear set includes a limiting seat fixed on the unit frame, a first bracket that slides directionally on one side of the limiting seat, an amplifying shaft that rotates on the limiting seat, and a first amplifying gear fixed at one end of the amplifying shaft. A rack is provided on the insulating rail plate to drive the first amplifying gear. The other end of the amplifying shaft drives the first bracket. One end of the first bracket extends into the track groove on the upper track. The insulating rail plate slides directionally under the support of the limiting seat.

[0016] The drain window includes a square box fixedly connected to the liquid pipe, a door panel that slides in the square box, a guide rod that guides the door panel to slide, a second amplifying gear distributed in the square box, and an input shaft with one end fixedly connected to the second amplifying gear. The other end of the input shaft extends to the outside of the square box to drive the second support. The second amplifying gear and the rack and pinion set at one end of the door panel drive each other. The guide rod is fixed on the square box. Multiple holes are opened on one side of the housing of the square box, and the door panel located at the continuous toothed section of the cloth belt slides away from the multiple holes, so that the plating solution overflowing from the square box adheres to the cloth belt.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, a row of brush-plating points is set on the cloth tape. The row of brush-plating points passes over the terminals on the current transformer one by one, and quickly completes multiple brush-plating. The brush-plating points are generated on one side of the current transformer terminals. After brush-plating the terminals, they disappear on the other side of the current transformer. The brush-plated part of the cloth tape can be reused to avoid material waste. In addition, after the cloth tape has completed a specified number of brush-plating, the cloth tape is transported by itself to refresh the brush-plated part.

[0018] 2. In this invention, an electrode rod is in close contact above the brush plating point on the cloth tape. After the cloth tape partially absorbs the plating solution, it is directly transported to the brush plating point. In this way, the high-density current causes the metal ions to discharge, reduce, and crystallize and deposit on the contacting current transformer terminals. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram showing the location of the current transformer.

[0021] Figure 3 This is a schematic diagram of the brush plating mechanism.

[0022] Figure 4This is a schematic diagram of the suspension position.

[0023] Figure 5 This is a schematic diagram of the sprocket position.

[0024] Figure 6 This is a schematic diagram of the lower track structure.

[0025] Figure 7 This is a schematic diagram of the conductive frame structure.

[0026] Figure 8 This is a schematic diagram of the liquid storage tank structure.

[0027] Figure 9 This is a schematic diagram of the brush plating unit structure.

[0028] Figure 10 This is a schematic diagram of the fabric pressing assembly.

[0029] Figure 11 This is a schematic diagram of the gear set structure.

[0030] Figure 12 This is a schematic diagram of the coating component.

[0031] Figure 13 This is a schematic diagram of the fabric tape structure.

[0032] Figure 14 This is a schematic diagram of the drainage window structure.

[0033] Figure 15 To collect component structure diagrams.

[0034] In the diagram: 1. Brush plating mechanism; 2. Robotic arm; 3. Suspension; 4. Fabric belt; 5. Fabric feeding mechanism; 6. Fabric winding mechanism; 7. Current transformer; 8. Chain frame; 9. End shaft; 10. Sprocket; 11. Chain; 12. Brush plating unit; 13. Upper track; 14. Lower track; 15. Conductive frame; 16. Liquid storage tank; 17. Liquid injection pipe; 18. Pressing block; 19. Unit frame; 20. Fabric pressing assembly; 21. Roller; 22. Coating assembly; 23. Collection assembly; 24. Electrode rod; 25. Insulating rail plate; 26. Conductive sheet; 27. Gear set; 271. First support; 272. Limiting seat; 273. Amplifying shaft; 274. First amplifying gear; 28. Liquid pipe; 29. ​​Drainage window; 291. Guide rod; 292. Door panel; 293. Input shaft; 294. Second amplifying gear; 295. Square box; 30. Second support; 31. Horizontal tube; 32. Swing tube; 33. Spring piece; 34. Third support. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the technical solutions of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 15 This invention provides a technical solution: an automatic brush plating machine for current transformers, comprising a brush plating mechanism 1, a suspension 3 connected above the brush plating mechanism 1, a robotic arm 2 for moving the suspension 3, a cloth belt 4 conveyed on the brush plating mechanism 1 and used to absorb plating solution, a cloth release mechanism 5 fixed at one end of the suspension 3 for releasing the cloth belt 4, and a cloth winding mechanism 6 fixed at the other end of the suspension 3 for winding the cloth belt 4. The brush plating mechanism 1 controls the cloth belt 4 to brush plating the current transformer 7 arranged below. The brush plating mechanism 1 includes: The suspension 3 has a chain frame 8, two end shafts 9 supported on the chain frame 8, sprockets 10 fixed on the end shafts 9, and a chain 11 supported by the two sprockets 10. The two end shafts 9 are respectively movably sleeved in the shaft holes opened at both ends of the chain frame 8. One end shaft 9 is connected to an external drive mechanism, which can be a motor fixedly installed on the suspension 3. The end shaft 9 drives the sprockets 10 to rotate, thereby controlling the meshing chain 11 to be conveyed. The chain 11 is equipped with brush plating units 12 at fixed intervals. The brush plating units 12 are circulated along a flat closed loop route. In a certain part, a row of brush plating units 12 controls and guides the cloth belt 4 to present a continuous toothed bend. The continuous toothed section on the cloth belt 4 contacts the current transformer 7 below to perform brush plating.

[0037] Reference Appendix Figure 6 and attached Figure 7 It is understood that the brush plating mechanism 1 also includes: The upper rail 13 and lower rail 14 are fixed on the chain frame 8 and are used to guide and control the deformation of the brush plating unit 12 that passes through. A conductive frame 15 is fixed on the chain frame 8. A conductive straight plate is set on the conductive frame 15 to make contact with multiple brush plating units 12 located in the continuous toothed section of the fabric belt 4. A soft conductive wire is connected to the fabric belt 4. The soft wire extends to the DC power supply device through the robotic arm 2. The DC power supply device converts AC power into DC power and has stepless adjustment of output voltage and current, rapid polarity reversal, overload protection and ampere-hour meter functions, serving as the energy supply and control center.

[0038] Reference Appendix Figure 6 and attached Figure 8The brush plating mechanism 1 also includes a liquid storage tank 16 fixed on the chain frame 8, a liquid injection pipe 17 fixedly connected to one side of the liquid storage tank 16, and a pressure block 18 for pressing the brush plating unit 12 passing over the liquid storage tank 16. The pressed brush plating unit 12 collects plating solution from the liquid storage tank 16. The pressure block 18 is fixed on the chain frame 8. The liquid storage tank 16 stores the plating solution. A hose is connected between the plating solution supply mechanism and the liquid injection pipe 17 to inject the plating solution into the liquid injection pipe 17 and then into the liquid storage tank 16. When each brush plating unit 12 passes over the liquid storage tank 16, it scoops away a portion of the plating solution from the liquid storage tank 16. The liquid level of the plating solution in the liquid storage tank 16 gradually decreases. A liquid level monitoring element is installed in the liquid storage tank 16. Once the liquid level is lower than the specified height value, the plating solution supply mechanism will deliver plating solution to the liquid storage tank 16. In this embodiment, the pressure block 18 is designed as a "T"-shaped block structure.

[0039] Reference Appendix Figure 9 Understandably, the brush plating unit 12 includes a unit frame 19 fixed on the chain 11, and a pressing cloth assembly 20, a roller 21, a coating liquid assembly 22 and a collecting assembly 23 simultaneously supported on the unit frame 19. The coating liquid assembly 22 applies plating liquid to the cloth belt 4 that is about to come into contact with the current transformer 7.

[0040] Reference Appendix Figure 10 The pressing assembly 20 includes an electrode rod 24 for contacting and pressing the fabric belt 4, an insulating rail plate 25 vertically fixed on the electrode rod 24, a conductive sheet 26 fixed on the insulating rail plate 25, and a gear set 27 for driving the insulating rail plate 25 to rise and fall. One end of the conductive sheet 26 is electrically connected to the electrode rod 24, and the other end of the conductive sheet 26 located in the continuous toothed section of the fabric belt 4 contacts the conductive frame 15 for conduction. At the same time, the electrode rod 24 located in the continuous toothed section of the fabric belt 4 presses down on a part of the fabric belt 4. Thus, the electrode rod 24 and the roller 21 are alternately distributed at the bend positions on the continuous toothed section of the fabric belt 4. A transverse U-shaped piece is provided at the end of the conductive sheet 26. The U-shaped piece contacts the conductive straight plate on the conductive frame 15. The U-shaped piece has a certain elasticity and can slide along the surface of the conductive straight plate on the conductive frame 15.

[0041] Reference Appendix Figure 12 The coating component 22 includes a liquid pipe 28 fixed on the unit frame 19, a drain window 29 fixedly connected to one end of the liquid pipe 28, and a second bracket 30 for driving the drain window 29. The other end of the liquid pipe 28 is connected to the collection component 23. The drain window 29 meets and fits against a partial section of the cloth tape 4. The second bracket 30 slides in a direction under the support of the unit frame 19.

[0042] The gear set 27 slides along the flat closed-loop route groove on the upper track 13, and the height of the local route groove on the upper track 13 located on the side of the continuous tooth section of the belt 4 changes. The second bracket 30 slides along the flat closed-loop route groove on the lower track 14, and the height of the local route groove on the lower track 14 located on the side of the continuous tooth section of the belt 4 changes.

[0043] The collecting component 23 includes a horizontal tube 31 with one end movably connected to the liquid tube 28, a swing tube 32 vertically fixedly connected to the other end of the horizontal tube 31, a spring piece 33 for pushing the swing tube 32 to reset, and a third support 34 for driving the horizontal tube 31 to rotate. The third support 34 slides directionally on the unit frame 19. The pressure block 18 presses against the encountered third support 34. One end of the swing tube 32 is a ladle structure and is used to hold the plating solution stored in the liquid storage tank 16. A T-shaped groove is opened on one side of the third support 34 to engage with the T-shaped column set on the unit frame 19. A row of teeth is set on the other side of the third support 34 to mesh with the cylindrical gear fixed on the horizontal tube 31 for transmission.

[0044] In this embodiment, the spring piece 33 is preferably C-shaped. One end of the C-shaped spring piece 33 is fixed on the unit frame 19, and the other end rests on the lower surface of the swing tube 32 to support the swing tube 32 in operation.

[0045] Combined with appendix Figure 15 and attached Figure 8 It is understood that each brush plating unit 12 passes over the liquid storage tank 16 during one rotation, thereby collecting the plating solution in the liquid storage tank 16. Specifically, the pressure block 18 presses against the third support 34, and the movement of the third support 34 drives the horizontal tube 31 to rotate, which in turn causes the swing tube 32 to swing. The ladle of the swing tube 32 falls into the plating solution. Then, the third support 34 and the pressure block 18 are misaligned, and the spring 33 pushes the swing tube 32 to reset its swing. The swing tube 32 returns to a horizontal state, and the swing tube 32 contains the plating solution that has been scooped out. The plating solution flows through the horizontal tube 31 into the liquid pipe 28, ensuring that it is supplied to the drain window 29. When the swing tube 32 scoops out the plating solution to the swing level, there is some overflow of the plating solution. In this way, after the swing tube 32 is completely horizontal, the liquid level of the plating solution in the swing tube 32 is lower than the height of the port, which can prevent the plating solution from splashing out.

[0046] The gear set 27 includes a limiting seat 272 fixed on the unit frame 19, a first bracket 271 that slides directionally on one side of the limiting seat 272, an amplifying shaft 273 that rotates on the limiting seat 272, and a first amplifying gear 274 fixed at one end of the amplifying shaft 273. A rack is provided on the insulating rail plate 25 to drive the first amplifying gear 274. The other end of the amplifying shaft 273 drives the first bracket 271. One end of the first bracket 271 extends into the rail groove on the upper rail 13. The insulating rail plate 25 slides directionally under the support of the limiting seat 272. A T-shaped plate is provided on the limiting seat 272 to engage with the T-shaped groove opened on the insulating rail plate 25. A gear is fixed at the end of the amplifying shaft 273 to mesh with a row of teeth provided on the first bracket 271. The amplifying shaft 273 is movably sleeved in the shaft hole opened on the limiting seat 272. A T-shaped post is provided on the limiting seat 272 to engage with the T-shaped groove opened on the first bracket 271.

[0047] The drain window 29 includes a square box 295 fixedly connected to the liquid pipe 28, a door panel 292 sliding in the square box 295, a guide rod 291 guiding the sliding of the door panel 292, a second amplifying gear 294 distributed in the square box 295, and an input shaft 293 fixedly connected at one end to the second amplifying gear 294. The other end of the input shaft 293 extends to the outside of the square box 295 to drive the second support 30. The second amplifying gear 294 and the rack and pinion set at one end of the door panel 292 drive each other. The guide rod 291 is fixed on the square box 295. Multiple holes are opened on one side of the housing of the square box 295, and the door panel 292 located at the continuous tooth section of the cloth belt 4 slides away from the multiple holes. As a result, the plating liquid overflowing from the square box 295 adheres to the cloth belt 4. The guide rod 291 slides through the inner hole of the cylinder set on one side of the door panel 292. The gear fixed at the outer end of the input shaft 293 meshes with a row of teeth set on the second support 30.

[0048] Reference Appendix Figure 7 and attached Figure 11 Understanding that the brush plating unit 12 is conveyed to the left, when it reaches the continuous toothed section on the fabric belt 4, the height of the upper track 13 decreases, thereby guiding the first support 271 to descend. The first support 271 drives the amplifying shaft 273 to rotate, and then the first amplifying gear 274 rotates, driving the insulating rail plate 25 to descend. Consequently, the electrode rod 24 descends and presses down on a local section of the fabric belt 4, while the height of the adjacent pressing assembly 20 remains unchanged, causing the fabric belt 4 to bend locally into a V-shape. Then, the brush plating unit 12 continues to advance to the left, combined with the attached... Figure 3Understandably, the right end of the cloth tape 4 is fixed and is synchronously conveyed to the left by the brush plating unit 12 of the cloth tape 4. This causes the multiple V-shaped tips on the cloth tape 4 to gradually move to the left in a wave-like manner, thus repeatedly applying plating solution to the terminals on the current transformer 7. At the same time, a row of electrode rods 24 releases current, which is transmitted to the plating solution at a local location on the cloth tape 4. This part of the plating solution is applied to the current transformer 7 at the V-shaped tip position, realizing local electroplating and brush plating. A plating layer is generated on the terminals on the current transformer 7. In this invention, the multiple V-shaped tips on the cloth tape 4 pass over the terminals on the current transformer 7, rapidly and repeatedly brush plating the terminals on the current transformer 7.

[0049] Further describing the previous paragraph, as the plating solution gradually drains from the V-shaped tip side of the tape 4 through the drain window 29, the plating solution is not blocked by the door panel 292 on one side of the square box 295. When the drain window 29 leaves the continuous toothed section of the tape 4, the second bracket 30 descends under the guidance of the lower track 14, thereby driving the input shaft 293 to rotate. Subsequently... Figure 14 The second amplifying gear 294 rotates clockwise, and the door panel 292 descends to block the multi-hole side of the square box 295. That is, after the square box 295 and the cloth belt 4 are separated, the overflow of plating solution on the square box 295 automatically stops.

[0050] In summary, Appendix Figure 3 The right end of the cloth tape 4 is held still, and the multiple brush plating units 12 of the continuous toothed section of the cloth tape 4 gradually move to the left, so that the multiple contacts on the cloth tape 4 gradually slide across the terminals on the current transformer 7, and the terminals are repeatedly brushed and plated, so that a part of the cloth tape 4 can be reused.

[0051] The fabric winding mechanism 6 at the left end of the fabric belt 4 is an elastic winding mechanism that allows the fabric belt 4 to be pulled out in the opposite direction. When the fabric belt 4 has been used for brush plating multiple times in a localized area, it needs to be replaced in time. At this time, the fabric unloading mechanism 5 gradually releases the fabric belt 4. While the brush plating unit 12 is conveying the fabric belt 4 to the left, it will also pull the fabric belt 4 to the left. The fabric winding mechanism 6 simultaneously winds up the used fabric belt 4. After the local replacement of the fabric belt 4 is completed, the continuous toothed section on the fabric belt 4 is renewed.

[0052] When implementing the above embodiments, the following should also be noted: the surfaces of components that can contact the plating solution, such as the chain frame 8, chain 11, end shaft 9, and track, must be chrome-plated or made of stainless steel; the electrode rod 24 is made of high-purity graphite or titanium with a platinum coating, serving as the brush plating anode. The cloth belt 4 is made of synthetic fiber fabric with strong liquid absorption and wear resistance; considering the fluidity of the plating solution, the inner walls of the liquid pipe 28 and the drain window 29 are coated with a hydrophobic coating to prevent the plating solution from crystallizing and adhering. The gear set 27 and the sliding fit positions are equipped with dust covers or sealing structures to prevent the plating solution and metal dust from entering.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic brush plating machine for current transformers, characterized in that: The system includes a brush plating mechanism, a suspension connected above the brush plating mechanism, a robotic arm for moving the suspension, a cloth belt conveyed on the brush plating mechanism and used to absorb plating solution, a cloth release mechanism fixed at one end of the suspension for releasing the cloth belt, and a cloth winding mechanism fixed at the other end of the suspension for winding the cloth belt. The brush plating mechanism controls the cloth belt to perform brush plating on the current transformer installed below. The brush plating mechanism includes: The chain frame fixed to the suspension, the two end shafts supported on the chain frame, the sprockets fixed on the end shafts, and the chain supported by the two sprockets; The chain is equipped with brush plating units installed at fixed intervals. The brush plating units are circulated along a flat closed loop route. In a certain area, a row of brush plating units controls and guides the cloth belt to be in a continuous toothed bend. The continuous toothed section on the cloth belt contacts the current transformer below to perform brush plating. The brush plating mechanism also includes: The upper and lower rails are fixed on the chain frame and are used to guide and control the deformation of the passing brush plating unit; A conductive frame fixed on a chain frame, wherein a conductive straight plate is provided on the conductive frame to make contact with multiple brush plating units located in the continuous toothed section of the fabric belt for conducting electricity; The brush plating mechanism also includes a liquid storage tank fixed on the chain frame, a liquid injection pipe fixedly connected to one side of the liquid storage tank, and a pressure block for pressing the brush plating unit passing over the liquid storage tank. The pressed brush plating unit collects plating solution from the liquid storage tank, and the pressure block is fixed on the chain frame. The brush plating unit includes a unit frame fixed on a chain, and a cloth pressing assembly, a roller, a coating liquid assembly and a collection assembly simultaneously supported on the unit frame. The coating liquid assembly applies plating liquid to the cloth strip that will come into contact with the current transformer. The pressing assembly includes an electrode rod for contacting and pressing the fabric strip, an insulating rail plate vertically fixed on the electrode rod, a conductive sheet fixed on the insulating rail plate, and a gear set for driving the insulating rail plate to rise and fall. One end of the conductive sheet is electrically connected to the electrode rod, and the other end of the conductive sheet located in the continuous toothed section of the fabric strip is in contact with the conductive frame for conduction. At the same time, the electrode rod located in the continuous toothed section of the fabric strip presses down on a part of the fabric strip, and thus the electrode rod and the roller are alternately distributed at the bend positions on the continuous toothed section of the fabric strip.

2. The automatic brush plating machine for a current transformer according to claim 1, characterized in that: The coating component includes a liquid pipe fixed on a unit frame, a drain window fixedly connected to one end of the liquid pipe, and a second bracket for driving the drain window. The other end of the liquid pipe is connected to a collection component. The drain window meets and fits against a partial section of the fabric tape. The second bracket slides in a directional manner under the support of the unit frame.

3. An automatic brush plating machine for a current transformer according to claim 2, characterized in that: The gear set slides along the flat closed-loop route groove on the upper track, and the height of the local route groove on the upper track located on the side of the continuous toothed section of the belt changes. The second bracket slides along the flat closed-loop route groove on the lower track, and the height of the local route groove on the lower track located on the side of the continuous toothed section of the belt changes.

4. An automatic brush plating machine for a current transformer according to claim 2, characterized in that: The collection assembly includes a horizontal tube with one end movably connected to a liquid tube, a swing tube vertically fixed and connected to the other end of the horizontal tube, a spring for pushing the swing tube to reset, and a third support for driving the horizontal tube to rotate. The third support slides directionally on the unit frame, and the pressure block presses against the encountered third support. One end of the spring is fixed on the unit frame, and one end of the swing tube is a ladle structure for holding the plating solution stored in the liquid storage tank.

5. An automatic brush plating machine for a current transformer according to claim 1, characterized in that: The gear set includes a limiting seat fixed on the unit frame, a first bracket that slides directionally on one side of the limiting seat, an amplifying shaft that rotates on the limiting seat, and a first amplifying gear fixed at one end of the amplifying shaft. A rack is provided on the insulating rail plate to drive the first amplifying gear. The other end of the amplifying shaft drives the first bracket. One end of the first bracket extends into the track groove on the upper track. The insulating rail plate slides directionally under the support of the limiting seat.

6. An automatic brush plating machine for a current transformer according to claim 2, characterized in that: The drain window includes a square box fixedly connected to the liquid pipe, a door panel that slides in the square box, a guide rod that guides the door panel to slide, a second amplifying gear distributed in the square box, and an input shaft with one end fixedly connected to the second amplifying gear. The other end of the input shaft extends to the outside of the square box to drive the second support. The second amplifying gear and the rack and pinion set at one end of the door panel drive each other. The guide rod is fixed on the square box. Multiple holes are opened on one side of the housing of the square box, and the door panel located at the continuous toothed section of the cloth belt slides away from the multiple holes, so that the plating solution overflowing from the square box adheres to the cloth belt.

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