Continuous plating method for connector terminal

Abstract

The invention discloses a connector terminal continuous plating method, and relates to the technical field of terminal continuous plating. The device comprises a base, one end of the base is fixedly connected with a first electroplating box, a covering device, laser etching equipment, a second electroplating box, a paint removing box, image collecting and rechecking equipment and a material collecting device in sequence, and one end of the base is fixedly connected with three cleaning boxes. The arc-shaped electromagnet is used for adsorbing metal chippings in the cleaning liquid, the driving roller drives the transfer belt to circularly move and is matched with the cleaning assembly to clean and collect the adsorbed metal chippings at the same time, and meanwhile the transmission mechanism is matched to drive the positioning roller to drive the terminal to vibrate in the cleaning liquid; then, a circulating pump is matched with a circulating water pipe I, an ultrafiltration membrane filter and a circulating water pipe II to filter the cleaning liquid in a filter box, and the filtered cleaning liquid is guided into a cleaning tank.

Description

Technical Field

[0001] This application relates to the technical field of continuous plating of terminals, and in particular, to a method for continuous plating of connector terminals. Background Art

[0002] In the field of electronic connector manufacturing, terminal electroplating technology is a key process to ensure product performance and quality. Terminal electroplating not only affects its electrical conductivity, corrosion resistance and mechanical strength, but also directly relates to the reliability and service life of the product. With the increasing requirements for connector performance in the electronic industry, terminal electroplating technology is also constantly developing and improving to meet the needs of more efficient, more environmentally friendly and more stable production.

[0003] At present, the main terminal electroplating technologies for connectors include four common methods: barrel plating, continuous plating, spot plating and brush plating. Among them, continuous electroplating (also known as roll-to-roll electroplating or wire electroplating) is an electroplating process suitable for continuous products such as wires and strips. In this process, metal wires or strips pass through the electroplating bath during continuous operation to achieve electroplating. Continuous plating has the advantages of high production speed, high automation degree, uniform electroplating layer and high control accuracy. However, in the post-treatment of electroplating, cleaning is a crucial link. Traditional cleaning methods include simply rinsing with running water, spraying, atomizing, etc. Although these methods can effectively remove the residual electroplating solution on the surface of the electroplated parts, they also have problems such as large water consumption and low cleaning efficiency.

[0004] During the continuous electroplating of terminals, when the residual electroplating solution on the surface of the electroplated parts is cleaned by immersion, as the continuous electroplating progresses, debris may fall from the terminal surface and into the cleaning solution. These debris will not only affect the concentration of the cleaning solution, but also may cause abrasion to the electroplated surface of the terminal when flowing in the cleaning solution, thus affecting the electroplating effect. Summary of the Invention

[0005] The purpose of this application is to provide a method for continuous plating of connector terminals to solve the problem that debris falling from the terminal surface and into the cleaning solution will affect the concentration of the cleaning solution and cause abrasion to the electroplated surface of the terminal, thus affecting the electroplating effect.

[0006] To achieve the above purpose, this application specifically adopts the following technical solutions: A continuous plating method for connector terminals, including a base, one end of the base is successively fixedly connected with a first electroplating tank, a covering device, a laser engraving device, a second electroplating tank, a paint removal tank, an image acquisition and re-inspection device, and a material receiving device. One end of the base is fixedly connected with three cleaning tanks, and the three cleaning tanks are respectively installed between the first electroplating tank and the covering device, between the laser engraving device and the second electroplating tank, and between the second electroplating tank and the paint removal tank. A cleaning groove is opened at the top of the cleaning tank, a filter tank is opened inside the cleaning tank, the output end of the cleaning groove is communicated with the filter tank and fixedly connected with a drain valve. The bottom of the cleaning tank is fixedly connected with a circulating pump communicated with the filter tank, the output end of the circulating pump is fixedly connected with a first circulating water pipe, one side of the cleaning tank is fixedly connected with an ultrafiltration membrane filter, the first circulating water pipe is fixedly connected with the input end of the ultrafiltration membrane filter, the inner top of the cleaning groove is fixedly connected with a second circulating water pipe, and the output end of the ultrafiltration membrane filter is fixedly connected with the second circulating water pipe. The top of the cleaning tank is symmetrically rotatably connected with support rollers, the top of the cleaning tank is symmetrically fixedly connected with guiding slide bars, one end of the two guiding slide bars is slidably connected with a mounting rod, one end of the mounting rod extends into the cleaning groove and is rotatably connected with a positioning roller. An arc-shaped support plate is fixedly connected inside the filter tank, an arc-shaped electromagnet is fixedly connected to the top of the arc-shaped support plate, a driving roller is rotatably connected inside the filter tank, a transfer belt is sleeved around the driving roller, the arc-shaped support plate and the arc-shaped electromagnet. One end of the cleaning tank is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with the driving roller, and a transmission mechanism for driving the positioning roller to reciprocate along the length direction of the guiding slide bar is installed at one end of the driving roller. A cleaning component for scraping foreign matters adhered to the surface of the transfer belt is installed inside the filter tank. The method includes the following steps: Step 1: First, prepare the electroplating solution, add a base electrolyte and titanium dioxide nanomaterials in a specific proportion as additives, and their content accounts for 0.05% of the volume of the electroplating solution. Continuously electroplate copper alloy connector terminals under standard electroplating conditions; Step 2: Traction the terminals starting from one end of the feeding device and fixedly connect them to one end of the material receiving device. During this process, one end of the terminals successively passes through the first electroplating tank and the cleaning groove, the covering device, the laser engraving device, the cleaning groove, the second electroplating tank, the cleaning groove, the paint removal tank, and the image acquisition and re-inspection device, so that the terminals are continuously plated during the entire electroplating process; Step 3: When one end of the terminals is pulled through the cleaning groove, make the middle section of the terminals bypass the bottom of the positioning roller, and at the same time, the two ends of the top of the terminals respectively form rolling contacts with the two support rollers. Thus, when one end of the terminals bypasses the bottom of the positioning roller, it is embedded in the cleaning groove and fully soaked with the cleaning liquid; Step 4: Simultaneously open the drain valve and the circulation pump, so that the cleaning liquid that has soaked the terminals is introduced into the interior of the filter tank along the top of the transfer belt, and then the cleaning liquid inside the filter tank is filtered by the circulation pump in cooperation with the first circulation water pipe, the ultrafiltration membrane filter, and the second circulation water pipe and introduced into the interior of the cleaning tank; Step 5: When the cleaning liquid inside the cleaning tank is guided to the top of the first circulation water pipe by opening the drain valve, start the arc electromagnet to adsorb the metal debris dropped by the terminals in the cleaning liquid through the first circulation water pipe. At the same time, the rotation of the driving roller, in cooperation with the arc-shaped support plate and the arc electromagnet, drives the transfer belt to move in a cycle, and makes the driving roller scrape and clean the metal debris adsorbed on the surface through the transfer belt in cooperation with the cleaning component, so as to maintain the adsorption effect of the driving roller on the metal debris through the surface of the transfer belt; Step 6: While driving the driving roller to rotate, drive the positioning roller to reciprocate along the length direction of the guiding slide rod through the transmission mechanism, and make the positioning roller push the end of the terminal embedded in the cleaning tank to vibrate continuously, so that the metal debris adhered to the surface of the terminal quickly detaches in cooperation with the cleaning liquid; Step 7: When one end of the traction terminal passes through the image acquisition and re-inspection device, use the image acquisition and re-inspection device to scan and identify the electroplating image on the surface of the terminal, and record and register the terminals with unqualified surface electroplating.

[0007] Further, the cleaning component includes an arc-shaped water-permeable and airtight net fixedly connected inside the filter tank. One end of the top of the arc-shaped water-permeable and airtight net is fixedly connected with a scraper, and one end of the scraper is attached to the transfer belt.

[0008] By adopting the above technical solution, through the combined use of the scraper and the transfer belt, when the driving motor is started to drive the driving roller, in cooperation with the arc-shaped support plate and the arc electromagnet, to drive the transfer belt to move in a cycle, the end of the scraper attached to the transfer belt scrapes the tiny metal debris adsorbed on the surface of the transfer belt, and makes the tiny metal debris slide down along the guiding direction of the scraper into the interior of the arc-shaped water-permeable and airtight net for collection. In this way, it is convenient to realize the automatic cleaning and collection of the metal debris adsorbed on the surface of the transfer belt, effectively improving the practicability of the device.

[0009] Further, the transmission mechanism includes a transmission rod fixedly connected to one end of the mounting rod. The guiding slide rod is symmetrically sleeved with transmission springs at one end, and one end of the mounting rod is installed between the two transmission springs. One end of the cleaning tank is rotatably connected with a hexagonal transmission wheel, and one end of the driving roller is equipped with a transmission component for driving the hexagonal transmission wheel to rotate.

[0010] By adopting the above technical solution, through the combined use of the transmission component with the hexagonal transmission wheel, the transmission spring, and the transmission rod, when the driving motor is started to drive the driving roller to rotate, the transmission component drives the hexagonal transmission wheel to rotate rapidly, and pushes the transmission rod to drive the mounting rod to extrude the transmission spring to deform. At the same time, by utilizing the resilience characteristic of the transmission spring, the transmission spring pushes the transmission rod to reset. In this way, the mounting rod is reciprocally driven to drive the positioning roller to move along the length direction of the guiding slide rod, and the positioning roller is used to mobilize the terminals embedded in the cleaning tank to vibrate, so that the metal debris on the surface of the terminals can be quickly separated, thereby effectively improving the cleaning efficiency of the device.

[0011] Further, the transmission component includes a first transmission gear fixedly connected to one end of the driving roller, and a second transmission gear fixedly connected to one end of the hexagonal transmission wheel and meshing with the first transmission gear. The diameter of the first transmission gear is larger than that of the second transmission gear.

[0012] By adopting the above technical solution, through the combined use of the first transmission gear and the second transmission gear, when the driving motor is started to drive the driving roller to rotate, the first transmission gear and the second transmission gear are driven to mesh, and by utilizing the diameter difference between the second transmission gear and the first transmission gear, the second transmission gear is driven to rotate rapidly, effectively improving the practicability of the device.

[0013] Further, a contact roller is rotatably connected to the bottom of the transmission rod, and a rolling contact is formed between the contact roller and the hexagonal transmission wheel.

[0014] By adopting the above technical solution, through the combined use of the contact roller and the transmission rod, a rolling contact is formed between the transmission rod and the hexagonal transmission wheel through the contact roller, effectively reducing the wear between the transmission rod and the hexagonal transmission wheel and improving the smoothness of the device.

[0015] Further, a collection box communicated with the output end of the scraper is fixedly connected to one end of the cleaning box. A sewage auger is rotatably connected inside the arc-shaped water-permeable and dense net. A sewage motor is fixedly connected to one end of the cleaning box, and the output end of the sewage motor is fixedly connected to the sewage auger.

[0016] By adopting the above technical solution, through the combined use of the sewage auger and the arc-shaped water-permeable and dense net, starting the sewage motor can drive the sewage auger to push the metal debris to move towards the inside of the collection box along the length direction of the arc-shaped water-permeable and dense net, so as to facilitate the automatic cleaning of the metal debris collected inside the arc-shaped water-permeable and dense net and improve the practicability of the device.

[0017] Further, a plurality of flow guiding plates are fixedly connected inside the filtering box. The plurality of flow guiding plates are installed on the top of the transfer belt, and a water passing groove is formed at the bottom of the flow guiding plate. Adjacent two flow guiding plates are arranged staggeredly and form an S-shaped drainage channel.

[0018] By adopting the above technical solution, through the combined use of the flow deflector and the S-shaped drainage channel, it is convenient to guide the cleaning liquid to flow along the S-shaped drainage channel over the top of the transfer belt, effectively extending the travel of the cleaning liquid, enabling the arc-shaped electromagnet to fully adsorb the metal debris contained in the cleaning liquid through the transfer belt, so as to improve the filtering effect of the metal debris inside the cleaning, and enhancing the practicability of the device.

[0019] Furthermore, one end of the positioning roller is uniformly and fixedly connected with multiple pairs of limiting rings.

[0020] By adopting the above technical solution, through the setting of multiple pairs of limiting rings, it is convenient to guide and limit the end of the terminal bypassing the bottom of the positioning roller, effectively improving the stability of the movement of the terminal.

[0021] In summary, the present application includes at least one of the following beneficial effects: 1. By the combined use of the transmission mechanism and the cleaning component, first start the circulation pump, the arc-shaped electromagnet, and the drive motor, and open the drain valve, so that the cleaning liquid soaked in the terminals in the cleaning tank flows to the top of the transfer belt. At the same time, use the arc-shaped electromagnet to adsorb the metal debris in the cleaning liquid, and make the drive roller drive the transfer belt to move in a cycle while cooperating with the cleaning component to clean and collect the adsorbed metal debris. At the same time, cooperate with the transmission mechanism to drive the positioning roller to drive the terminals to vibrate in the cleaning liquid, so that the metal debris adhered to the surface of the terminals quickly detaches with the cleaning liquid. Then, through the cooperation of the circulation pump, the first circulation water pipe, the ultrafiltration membrane filter, and the second circulation water pipe, the cleaning liquid in the filtration tank is filtered and then introduced into the inside of the cleaning tank, so as to facilitate the rapid cleaning and collection of the metal debris on the surface of the terminals, and at the same time realize the circulating filtration of the cleaning liquid, effectively reducing the wear of the metal debris on the surface of the terminals and improving the electroplating effect of the device.

[0022] 2. By the combined use of the scraper and the transfer belt, when starting the drive motor to drive the drive roller to drive the transfer belt to move in a cycle in cooperation with the arc-shaped support plate and the arc-shaped electromagnet, it is convenient to make the scraper fit one end of the transfer belt to scrape off the tiny metal debris adsorbed on the surface of the transfer belt, and make the tiny metal debris slide along the guiding direction of the scraper into the inside of the arc-shaped water-permeable and airtight net for collection, so as to facilitate the automatic cleaning and collection of the metal debris adsorbed on the surface of the transfer belt, effectively improving the practicability of the device.

[0023] 3. By setting the transmission component to cooperate with the hexagonal transmission wheel, transmission spring, and transmission rod, when the driving motor is started to drive the driving roller to rotate, the transmission component drives the hexagonal transmission wheel to rotate rapidly, and the transmission rod is pushed to drive the mounting rod to extrude the transmission spring to deform. At the same time, by utilizing the resilience characteristic of the transmission spring, the transmission spring pushes the transmission rod to reset. In this way, the mounting rod is reciprocally driven to drive the positioning roller to move along the length direction of the guiding slide rod, and the positioning roller is mobilized to vibrate the terminals embedded in the cleaning tank, so that the metal debris on the surface of the terminals can quickly fall off, thereby effectively improving the cleaning efficiency of the device. Description of the Drawings

[0024] Figure 1 is a three-dimensional structural schematic diagram of the device body in the present application.

[0025] Figure 2 is an internal structural schematic diagram of the cleaning tank in the present application.

[0026] Figure 3 is an exploded view of the internal structure of the arc-shaped water-permeable and airtight net in the present application.

[0027] Figure 4 is an exploded view of the three-dimensional structure of the transmission mechanism in the present application.

[0028] Figure 5 is a three-dimensional structural schematic diagram of the limiting ring in the present application.

[0029] Description of the Reference Numerals: 1. Base; 2. Feeding device; 3. First electroplating tank; 4. Covering device; 5. Laser engraving equipment; 6. Second electroplating tank; 7. Paint stripping tank; 8. Image acquisition and re-inspection equipment; 9. Receiving device; 10. Cleaning tank; 11. Cleaning tank; 12. Filter tank; 13. Drain valve; 14. Circulation pump; 15. First circulation water pipe; 16. Ultrafiltration membrane filter; 17. Second circulation water pipe; 18. Support roller; 19. Guiding slide rod; 20. Mounting rod; 21. Positioning roller; 22. Arc-shaped support plate; 23. Arc-shaped electromagnet; 24. Driving roller; 25. Transfer belt; 26. Driving motor; 27. Arc-shaped water-permeable and airtight net; 28. Scraper; 29. Transmission rod; 30. Transmission spring; 31. Hexagonal transmission wheel; 32. First transmission gear; 33. Second transmission gear; 34. Contact roller; 35. Collection box; 36. Sewage auger; 37. Sewage motor; 38. Deflector; 39. Water overflow tank; 40. Limiting ring. Detailed Embodiment

[0030] The following further describes the present application in detail with reference to FIGS. Figure 1 -5.

[0031] The embodiment of the present application discloses a method for continuous electroplating of connector terminals.

[0032] Reference Figure 1 - Figure 3 , a continuous plating method for connector terminals, comprising a base 1, one end of the base 1 is sequentially fixedly connected with a first electroplating tank 3, a covering device 4, a laser engraving device 5, a second electroplating tank 6, a paint removal tank 7, an image acquisition and re-inspection device 8, and a material receiving device 9. One end of the base 1 is fixedly connected with three cleaning tanks 10. The three cleaning tanks 10 are respectively installed between the first electroplating tank 3 and the covering device 4, between the laser engraving device 5 and the second electroplating tank 6, and between the second electroplating tank 6 and the paint removal tank 7. A cleaning tank 11 is opened at the top of the cleaning tank 10, and a filter tank 12 is opened inside the cleaning tank 10. The output end of the cleaning tank 11 is communicated with the filter tank 12 and fixedly connected with a drain valve 13. The bottom of the cleaning tank 10 is fixedly connected with a circulating pump 14 communicated with the filter tank 12. The output end of the circulating pump 14 is fixedly connected with a first circulating water pipe 15. One side of the cleaning tank 10 is fixedly connected with an ultrafiltration membrane filter 16. The first circulating water pipe 15 is fixedly connected with the input end of the ultrafiltration membrane filter 16. The inner top of the cleaning tank 11 is fixedly connected with a second circulating water pipe 17. The output end of the ultrafiltration membrane filter 16 is fixedly connected with the second circulating water pipe 17. The top of the cleaning tank 10 is symmetrically rotatably connected with support rollers 18. The top of the cleaning tank 10 is symmetrically fixedly connected with guiding slide bars 19. One end of the two guiding slide bars 19 is slidably connected with a mounting rod 20. One end of the mounting rod 20 extends into the cleaning tank 11 and is rotatably connected with a positioning roller 21. An arc-shaped support plate 22 is fixedly connected inside the filter tank 12. An arc-shaped electromagnet 23 is fixedly connected to the top of the arc-shaped support plate 22. A driving roller 24 is rotatably connected inside the filter tank 12. A transfer belt 25 is sleeved around the driving roller 24, the arc-shaped support plate 22, and the arc-shaped electromagnet 23. One end of the cleaning tank 10 is fixedly connected with a driving motor 26. The output end of the driving motor 26 is fixedly connected with the driving roller 24. A transmission mechanism for driving the positioning roller 21 to reciprocate along the length direction of the guiding slide bar 19 is installed at one end of the driving roller 24. A cleaning component for scraping off the foreign matters adhered to the surface of the transfer belt 25 is installed inside the filter tank 12, including the following steps: Step 1: First, prepare the electroplating solution, add a base electrolyte and titanium dioxide nanomaterials in a specific proportion as additives, and their content accounts for 0.05% of the volume of the electroplating solution. Continuously electroplate copper alloy connector terminals under standard electroplating conditions; Step 2: Traction the terminal to start from one end of the feeding device 2 and fixedly connect it with one end of the material receiving device 9. During this period, one end of the terminal sequentially passes through the first electroplating tank 3 and the cleaning tank 11, the covering device 4, the laser engraving device 5, the cleaning tank 11, the second electroplating tank 6, the cleaning tank 11, the paint removal tank 7, and the image acquisition and re-inspection device 8, so that the terminal realizes continuous plating during the whole electroplating process; Step 3. When one end of the traction terminal passes through the inside of the cleaning tank 11, the middle section of the terminal bypasses the bottom of the positioning roller 21. At the same time, the two ends of the top of the terminal are in rolling contact with the two support rollers 18 respectively. Thus, when one end of the terminal bypasses the bottom of the positioning roller 21, it is embedded into the cleaning tank 11 and fully soaked in the cleaning liquid. Step 4. At the same time, open the drain valve 13 and the circulation pump 14, so that the drain valve 13 guides the cleaning liquid that has soaked the terminal along the top of the transfer belt 25 into the inside of the filter tank 12. Then, through the cooperation of the circulation pump 14, the first circulation water pipe 15, the ultrafiltration membrane filter 16, and the second circulation water pipe 17, the cleaning liquid inside the filter tank 12 is filtered and then introduced into the inside of the cleaning tank 11. Step 5. When guiding the cleaning liquid inside the cleaning tank 11 to the top of the first circulation water pipe 15 by opening the drain valve 13, start the arc electromagnet 23 to adsorb the metal debris dropped by the terminal in the cleaning liquid through the first circulation water pipe 15. At the same time, the rotation of the driving roller 24, in cooperation with the arc-shaped support plate 22 and the arc electromagnet 23, drives the transfer belt 25 to move in a cycle, and makes the metal debris adsorbed on the surface of the driving roller 24 through the transfer belt 25 be scraped and cleaned by the cleaning assembly, so as to maintain the adsorption effect of the driving roller 24 on the metal debris through the surface of the transfer belt 25. Step 6. While driving the driving roller 24 to rotate, drive the positioning roller 21 to reciprocate along the length direction of the guiding slide rod 19 through the transmission mechanism, and make the positioning roller 21 push the end of the terminal embedded in the cleaning tank 11 to vibrate continuously, so that the metal debris adhered to the surface of the terminal is quickly separated from the cleaning liquid. Step 7. When one end of the traction terminal passes through the image acquisition and re-inspection device 8, use the image acquisition and re-inspection device 8 to scan and identify the electroplating image on the surface of the terminal, and record and register the terminals with unqualified surface electroplating.

[0033] Refer to Figure 1 - Figure 3 The cleaning assembly includes an arc-shaped water-permeable and airtight net 27 fixedly connected inside the filter tank 12. One end of the top of the arc-shaped water-permeable and airtight net 27 is fixedly connected with a scraper 28, and one end of the scraper 28 is attached to the transfer belt 25.

[0034] During use, when the drain valve 13 is opened to introduce the cleaning liquid inside the cleaning tank 11 into the inside of the filter tank 12, and it collides with the top of the transfer belt 25 and flows along the top of the transfer belt 25, the arc-shaped electromagnet 23 is activated to generate a magnetic suction force, and through the transfer belt 25, the tiny metal debris contained in the cleaning liquid is adsorbed. Then, the drive motor 26 is started to drive the drive roller 24 to cooperate with the arc-shaped support plate 22 and the arc-shaped electromagnet 23 to drive the transfer belt 25 to move in a cycle. At this time, the transfer belt 25 drives the tiny metal debris adsorbed on its surface to move in the direction of the scraper 28, and the scraper 28 scrapes the tiny metal debris adsorbed on the surface of the transfer belt 25. At the same time, under the action of gravity, the tiny metal debris scraped by the scraper 28 slides into the inside of the arc-shaped water-permeable and airtight net 27 for collection, so as to facilitate the automatic cleaning and collection of the metal debris adsorbed on the surface of the transfer belt 25, effectively improving the practicability of the device.

[0035] Refer to Figure 2 - Figure 4 As shown in the figure, the transmission mechanism includes a transmission rod 29 fixedly connected to one end of the mounting rod 20. One end of the guiding slide rod 19 is symmetrically sleeved with transmission springs 30. One end of the mounting rod 20 is installed between the two transmission springs 30. One end of the cleaning tank 10 is rotatably connected with a hexagonal transmission wheel 31. One end of the drive roller 24 is equipped with a transmission component for driving the hexagonal transmission wheel 31 to rotate. Among them, the transmission component includes a first transmission gear 32 fixedly connected to one end of the drive roller 24. One end of the hexagonal transmission wheel 31 is fixedly connected with a second transmission gear 33 meshing with the first transmission gear 32, and the diameter of the first transmission gear 32 is larger than that of the second transmission gear 33. Moreover, a contact roller 34 is rotatably connected to the bottom of the transmission rod 29, and a rolling contact is formed between the contact roller 34 and the hexagonal transmission wheel 31.

[0036] During use, when the drive motor 26 is started to drive the drive roller 24 to rotate, the drive roller 24 drives the first transmission gear 32 to mesh with the second transmission gear 33, and by using the diameter difference between the second transmission gear 33 and the first transmission gear 32, the rotation speed of the second transmission gear 33 is increased. At the same time, the second transmission gear 33 drives the hexagonal transmission wheel 31 to rotate synchronously, and the hexagonal transmission wheel 31 forms a rolling contact with the transmission rod 29 through the contact roller 34. At the same time, the transmission rod 29 is pushed to drive the mounting rod 20 to move along the length direction of the guiding slide rod 19, and one end of the mounting rod 20 compresses the transmission spring 30 to generate deformation. At the same time, by using the resilience characteristic of the transmission spring 30, the transmission spring 30 pushes the transmission rod 29 to reset, so as to reciprocally drive the mounting rod 20 to drive the positioning roller 21 to move along the length direction of the guiding slide rod 19, and the positioning roller 21 adjusts the terminals embedded inside the cleaning tank 11 to vibrate, so that the metal debris on the surface of the terminals quickly detaches, thereby effectively improving the cleaning efficiency of the device.

[0037] Reference Figure 1 - Figure 3 , one end of the cleaning tank 10 is fixedly connected to a collection tank 35 communicating with the output end of the scraper 28. A sewage auger 36 is rotatably connected inside the arc-shaped water-permeable and airtight net 27. One end of the cleaning tank 10 is fixedly connected to a sewage motor 37, and the output end of the sewage motor 37 is fixedly connected to the sewage auger 36.

[0038] During use, by starting the sewage motor 37, the sewage auger 36 can be driven to rotate, and the sewage auger 36 can push the metal debris collected inside the arc-shaped water-permeable and airtight net 27 to move towards the inside of the collection tank 35 along the length direction of the arc-shaped water-permeable and airtight net 27, so as to facilitate the automatic cleaning of the metal debris collected inside the arc-shaped water-permeable and airtight net 27 and improve the practicability of the device.

[0039] Reference Figure 1 - Figure 3 , a plurality of guide plates 38 are fixedly connected inside the filter tank 12. The plurality of guide plates 38 are installed on the top of the transfer belt 25, and a water passing groove 39 is opened at the bottom of the guide plate 38. Two adjacent guide plates 38 are arranged staggeredly and form an S-shaped drainage channel.

[0040] During use, when the drain valve 13 is opened to guide the cleaning liquid inside the cleaning tank 11 to flow into the filter tank 12, the cleaning liquid collides with the plurality of guide plates 38 in turn under the action of gravity and flows over the top of the transfer belt 25 along the S-shaped drainage channel, thereby effectively extending the travel of the cleaning liquid flowing along the surface of the transfer belt 25, and enabling the arc-shaped electromagnet 23 to fully adsorb the metal debris contained in the cleaning liquid through the transfer belt 25 to improve the filtering effect of the metal debris inside the cleaning, improve the practicability of the device, and the metal debris adsorbed on the surface of the transfer belt 25 can pass through the water passing groove 39 through the gap between the guide plate 38 and the transfer belt 25.

[0041] Reference Figure 2 and Figure 5 , a plurality of pairs of limiting rings 40 are uniformly fixedly connected to one end of the positioning roller 21.

[0042] During use, when one end of the traction terminal bypasses the bottom of the positioning roller 21, one end of the terminal is embedded between a pair of limiting rings 40, so that the limiting rings 40 form guiding and limiting for one end of the terminal, reducing the situation that the terminal shakes along the length direction of the positioning roller 21, resulting in unstable movement of the terminal, and improving the practicability of the device.

[0043] The implementation principle of a continuous plating method for a connector terminal in this embodiment is as follows: First, the terminal is pulled from one end of the feeding device 2 and fixedly connected to one end of the receiving device 9. During this process, one end of the terminal sequentially passes through the first electroplating tank 3, the cleaning tank 11, the covering device 4, the laser engraving equipment 5, the cleaning tank 11, the second electroplating tank 6, the cleaning tank 11, the paint removal tank 7, and the image acquisition and re-inspection equipment 8, enabling continuous plating of the terminal during the entire electroplating process. At the same time, when one end of the pulled terminal passes through the inside of the cleaning tank 11, the middle section of the terminal bypasses the bottom of the positioning roller 21, and the two ends of the top of the terminal respectively form rolling contacts with the two support rollers 18. Thus, when one end of the terminal bypasses the bottom of the positioning roller 21, it is embedded in the cleaning tank 11 and fully soaked in the cleaning liquid; Then, the drain valve 13 is opened to introduce the cleaning liquid inside the cleaning tank 11 into the filter tank 12, where it collides with the top of the transfer belt 25. When flowing along the top of the transfer belt 25, the arc-shaped electromagnet 23 is activated to generate a magnetic suction force, and through the transfer belt 25, the tiny metal debris contained in the cleaning liquid is adsorbed. At the same time, the cleaning liquid collides with a plurality of flow guiding plates 38 in sequence under the action of gravity and flows through the top of the transfer belt 25 along the S-shaped drainage channel, effectively extending the travel of the cleaning liquid flowing along the surface of the transfer belt 25 and enabling the arc-shaped electromagnet 23 to fully adsorb the metal debris contained in the cleaning liquid through the transfer belt 25. Then, when the driving motor 26 is started to drive the driving roller 24 to cooperate with the arc-shaped support plate 22 and the arc-shaped electromagnet 23 to drive the transfer belt 25 to move in a cycle, the transfer belt 25 drives the tiny metal debris adsorbed on its surface towards the direction of the scraper 28, and the scraper 28 scrapes the tiny metal debris adsorbed on the surface of the transfer belt 25. At the same time, under the action of gravity, the tiny metal debris scraped by the scraper 28 slides into the interior of the arc-shaped water-permeable and airtight net 27 for collection; Meanwhile, the driving roller 24 drives the first transmission gear 32 to engage with the second transmission gear 33, and utilizes the diameter difference between the second transmission gear 33 and the first transmission gear 32 to increase the rotational speed of the second transmission gear 33. At the same time, the second transmission gear 33 drives the hexagonal transmission wheel 31 to rotate synchronously, and the hexagonal transmission wheel 31 forms a rolling contact with the transmission rod 29 through the contact roller 34. Meanwhile, it pushes the transmission rod 29 to drive the mounting rod 20 to move along the length direction of the guiding slide rod 19, and one end of the mounting rod 20 squeezes the transmission spring 30 to deform. At the same time, by utilizing the resilience characteristic of the transmission spring 30, the transmission spring 30 pushes the transmission rod 29 to reset. In this way, it reciprocally drives the mounting rod 20 to drive the positioning roller 21 to move along the length direction of the guiding slide rod 19, and the positioning roller 21 mobilizes the terminals embedded in the cleaning tank 11 to vibrate, so that the metal debris on the surface of the terminals can quickly fall off. Then, by starting the sewage discharge motor 37, the sewage discharge auger 36 can be driven to rotate, and the sewage discharge auger 36 pushes the metal debris collected inside the arc-shaped water-permeable and tight net 27 to move towards the inside of the collection box 35 along the length direction of the arc-shaped water-permeable and tight net 27.

Claims

1. A continuous plating method for connector terminals, including a base (1), one end of the base (1) is successively fixedly connected with a first electroplating tank (3), a covering device (4), a laser engraving device (5), a second electroplating tank (6), a paint removal tank (7), an image acquisition and re-inspection device (8), and a material receiving device (9). One end of the base (1) is fixedly connected with three cleaning tanks (10), and the three cleaning tanks (10) are respectively installed between the first electroplating tank (3) and the covering device (4), between the laser engraving device (5) and the second electroplating tank (6), and between the second electroplating tank (6) and the paint removal tank (7). A cleaning groove (11) is opened at the top of the cleaning tank (10), and a filter tank (12) is opened inside the cleaning tank (10). The output end of the cleaning groove (11) is communicated with the filter tank (12) and fixedly connected with a drain valve (13). The bottom of the cleaning tank (10) is fixedly connected with a circulating pump (14) communicated with the filter tank (12). The output end of the circulating pump (14) is fixedly connected with a first circulating water pipe (15). One side of the cleaning tank (10) is fixedly connected with an ultrafiltration membrane filter (16). The first circulating water pipe (15) is fixedly connected with the input end of the ultrafiltration membrane filter (16). A second circulating water pipe (17) is fixedly connected to the inner top of the cleaning groove (11). The output end of the ultrafiltration membrane filter (16) is fixedly connected with the second circulating water pipe (17). Support rollers (18) are symmetrically rotatably connected to the top of the cleaning tank (10). Guide slide bars (19) are symmetrically fixedly connected to the top of the cleaning tank (10). One end of the two guide slide bars (19) is slidably connected with a mounting rod (20). One end of the mounting rod (20) extends into the cleaning groove (11) and is rotatably connected with a positioning roller (21). An arc-shaped support plate (22) is fixedly connected inside the filter tank (12). An arc-shaped electromagnet (23) is fixedly connected to the top of the arc-shaped support plate (22). A driving roller (24) is rotatably connected inside the filter tank (12). A transfer belt (25) is sleeved on the periphery of the driving roller (24), the arc-shaped support plate (22), and the arc-shaped electromagnet (23). One end of the cleaning tank (10) is fixedly connected with a driving motor (26). The output end of the driving motor (26) is fixedly connected with the driving roller (24). A transmission mechanism for driving the positioning roller (21) to reciprocate along the length direction of the guide slide bar (19) is installed at one end of the driving roller (24). A cleaning component for scraping foreign matters adhered to the surface of the transfer belt (25) is installed inside the filter tank (12). It is characterized in that: It includes the following steps: Step 1: First, prepare the electroplating solution, add a specific proportion of basic electrolyte and titanium dioxide nanomaterials as additives, and their content accounts for 0.05% of the volume of the electroplating solution. Continuously electroplate the copper alloy connector terminals under standard electroplating conditions; Step 2: Pull the terminal from one end of the feeding device (2) and fixedly connect it to one end of the receiving device (9). During this process, one end of the terminal sequentially passes through the first electroplating tank (3), the cleaning tank (11), the covering device (4), the laser engraving equipment (5), the cleaning tank (11), the second electroplating tank (6), the cleaning tank (11), the paint removal tank (7), and the image acquisition and re-inspection equipment (8), so that the terminal realizes continuous plating during the entire electroplating process; Step 3: When one end of the pulled terminal passes through the inside of the cleaning tank (11), make the middle section of the terminal bypass the bottom of the positioning roller (21), and at the same time, the two top ends of the terminal respectively form rolling contact with the two support rollers (18). Thus, when one end of the terminal bypasses the bottom of the positioning roller (21), it is embedded in the cleaning tank (11) and fully soaked with the cleaning liquid; Step 4: At the same time, open the drain valve (13) and the circulation pump (14), so that the drain valve (13) guides the cleaning liquid that has soaked the terminal along the top of the transfer belt (25) into the inside of the filter tank (12), and then through the circulation pump (14) cooperating with the first circulation water pipe (15), the ultrafiltration membrane filter (16), and the second circulation water pipe (17), the cleaning liquid inside the filter tank (12) is filtered and then introduced into the inside of the cleaning tank (11); Step 5: When guiding the cleaning liquid inside the cleaning tank (11) to the top of the first circulation water pipe (15) by opening the drain valve (13), start the arc electromagnet (23) to adsorb the metal debris dropped by the terminal in the cleaning liquid through the first circulation water pipe (15). At the same time, the rotation of the driving roller (24) cooperates with the arc-shaped support plate (22) and the arc electromagnet (23) to drive the transfer belt (25) to move in a cycle, and make the driving roller (24) scrape and clean the metal debris adsorbed on the surface through the transfer belt (25) in cooperation with the cleaning component, so as to maintain the adsorption effect of the driving roller (24) on the metal debris through the surface of the transfer belt (25); Step 6: When driving the driving roller (24) to rotate, cooperate with the transmission mechanism to drive the positioning roller (21) to move reciprocally along the length direction of the guiding slide rod (19), and make the positioning roller (21) push the end of the terminal embedded in the cleaning tank (11) to vibrate continuously, so that the metal debris adhered to the surface of the terminal quickly detaches in cooperation with the cleaning liquid; Step 7: When one end of the pulled terminal passes through the inside of the image acquisition and re-inspection equipment (8), use the image acquisition and re-inspection equipment (8) to scan and identify the electroplating image on the surface of the terminal, and record and register the terminals with unqualified surface electroplating.

2. A continuous plating method for a connector terminal according to claim 1, characterized in that: The cleaning component includes an arc-shaped water-permeable and airtight net (27) fixedly connected inside the filter tank (12). One end of the top of the arc-shaped water-permeable and airtight net (27) is fixedly connected with a scraper (28), and one end of the scraper (28) is attached to the transfer belt (25).

3. A continuous plating method for a connector terminal according to claim 1, characterized in that: The transmission mechanism includes a transmission rod (29) fixedly connected to one end of the mounting rod (20). One end of the guiding slide rod (19) is symmetrically sleeved with transmission springs (30). One end of the mounting rod (20) is installed between the two transmission springs (30). One end of the cleaning tank (10) is rotatably connected to a hexagonal transmission wheel (31). One end of the driving roller (24) is provided with a transmission component for driving the hexagonal transmission wheel (31) to rotate.

4. A method for continuous plating of connector terminals according to claim 3, characterized in that: The transmission component includes a first transmission gear (32) fixedly connected to one end of the driving roller (24). One end of the hexagonal transmission wheel (31) is fixedly connected to a second transmission gear (33) meshing with the first transmission gear (32). The diameter of the first transmission gear (32) is larger than that of the second transmission gear (33).

5. A method for continuous plating of a connector terminal according to claim 3, characterized in that: A contact roller (34) is rotatably connected to the bottom of the transmission rod (29). A rolling contact is formed between the contact roller (34) and the hexagonal transmission wheel (31).

6. A continuous plating method for a connector terminal according to claim 2, characterized in that: One end of the cleaning tank (10) is fixedly connected to a collection tank (35) communicating with the output end of the scraper (28). A sewage auger (36) is rotatably connected inside the arc-shaped water-permeable and waterproof net (27). One end of the cleaning tank (10) is fixedly connected to a sewage motor (37). The output end of the sewage motor (37) is fixedly connected to the sewage auger (36).

7. A method for continuously plating a connector terminal according to claim 1, characterized in that: A plurality of flow guide plates (38) are fixedly connected inside the filter tank (12). The plurality of flow guide plates (38) are installed on the top of the transfer belt (25). A water passing groove (39) is formed at the bottom of the flow guide plate (38). Adjacent two flow guide plates (38) are arranged staggeredly and form an S-shaped drainage channel.

8. A continuous plating method for a connector terminal according to claim 1, characterized in that: A plurality of pairs of limiting rings (40) are uniformly fixedly connected to one end of the positioning roller (21).

Images