Spot plating structure for connector terminal electrogilding

Abstract

The utility model relates to the technical field of connector electrogilding, and discloses a spot plating structure for connector terminal electrogilding, which comprises a case, the middle part of the front side of the outer wall of the case is rotatably connected with a main shaft, the front side of the outer wall of the case is rotatably connected with a plurality of auxiliary shafts, and the rear end of the main shaft is fixedly connected with a large gear. The rear ends of the auxiliary shafts are fixedly connected with first gears, the top of the front side of the outer wall of the machine box is rotationally connected with a sponge roller, and the rear end of the sponge roller is fixedly connected with a second gear. According to the utility model, the main shaft rotates so as to drive the plurality of auxiliary shafts and the sponge roller to rotate synchronously, and when the nozzles move along with the auxiliary shafts to be close to the conveying belt, gold plating liquid is accurately sprayed to the corresponding parts of the connector terminals on the conveying belt from the nozzles through the water conveying pipes, so that high-precision local electroplating is realized, and the quality and the reliability of products are effectively improved; manual intervention is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of gold plating technology for connectors, and more particularly to a spot plating structure for gold plating of connector terminals. Background Technology

[0002] With the increasing miniaturization of electronic products, the requirements for connectors are also becoming more stringent. On the one hand, connectors need to have good conductivity and corrosion resistance; on the other hand, in order to reduce costs, precious metal materials cannot be used throughout. Therefore, localized electroplating has become an effective method. Localized electroplating technology meets performance requirements by applying a metal coating to specific areas, while avoiding the excessive cost of full-area electroplating.

[0003] Currently, the most common local electroplating technologies on the market include brush coating and fixture positioning. Although brush coating is simple and easy to implement, the uniformity of the coating is difficult to control and the efficiency is low. Fixture positioning can achieve precise fixed-point electroplating, but the fixture design is complex, has poor adaptability, and is costly. Existing methods cannot achieve high-precision electroplating and require too much manual intervention during electroplating, resulting in low electroplating efficiency and poor electroplating quality, which reduces the practicality of the device. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a spot plating structure for electroplating gold on connector terminals, aiming to improve the existing technology where existing methods cannot achieve high-precision electroplating, require excessive manual intervention during electroplating, resulting in low electroplating efficiency and poor electroplating quality, thus reducing the practicality of the device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a spot plating structure for electroplating gold on connector terminals, comprising a chassis, a main shaft rotatably connected to the middle of the front side of the outer wall of the chassis, multiple secondary shafts rotatably connected to the front side of the outer wall of the chassis, a large gear fixedly connected to the rear end of the main shaft, and gear one fixedly connected to the rear end of each of the multiple secondary shafts, a sponge roller rotatably connected to the top of the front side of the outer wall of the chassis, and gear two fixedly connected to the rear end of the sponge roller, with each of the multiple gears one and gear two meshing with the large gear, and spray nozzles fixedly connected to the front side of the outer wall of each of the multiple secondary shafts. The machine housing has a motor fixedly connected to the rear side of its outer wall, the output end of which is fixedly connected to the main shaft. Multiple auxiliary shafts have water supply pipes connected to their rear outer walls. A gold plating solution box is fixedly connected to the top of the inner wall of the machine housing. The other ends of the multiple water supply pipes are connected to the gold plating solution box. Control valves are fixedly connected to the outer walls of the multiple water supply pipes. Rotary rollers are rotatably connected to the left and right sides of the front end of the machine housing. A conveyor belt is installed on the top of the multiple rotating rollers. A cover plate is rotatably connected to the top of the machine housing. A water tank is opened at the bottom of the inner wall of the machine housing, and a recycling mechanism is installed inside the water tank.

[0006] Through the above technical solution: after the motor starts, it drives the main shaft fixed to its output end to rotate. The large gear at the rear end of the main shaft drives the rear gear one of the auxiliary shaft and the rear gear two of the sponge roller to rotate synchronously, realizing the coordinated action of multiple components. When the nozzle fixed on the front side of the outer wall of the auxiliary shaft approaches the connector terminal on the conveyor belt supported and driven by the rotating roller, it accurately sprays the gold plating solution in the gold plating solution box at the top of the inner wall of the machine onto the terminal according to the control valve on the outer wall of the water supply pipe, thus completing the electroplating. During the process, the sponge roller plays the role of smoothing the plating layer defects and evenly dispersing the electroplating solution to improve the plating quality. The waste liquid generated by electroplating flows into the water tank at the bottom of the inner wall of the machine for subsequent filtration treatment. The cover plate connected to the top of the machine always ensures that the internal environment is not disturbed by the outside world.

[0007] As a further description of the above technical solution:

[0008] The recycling mechanism includes a filter plate slidably connected to the front side of the inner wall of the water tank. Multiple heating wires are fixedly connected to the front and rear sides of the bottom of the inner wall of the water tank. A filter screen is fixedly connected to the middle of the inner wall of the water tank. A water pump is fixedly connected to the rear side of the outer wall of the casing. A water pump is connected to the left end of the water pump and the other end of the water pump is connected to the water tank. A drain pipe is connected to the top of the water pump and the other end of the drain pipe is connected to the gold plating solution box.

[0009] Through the above technical solution: when the waste liquid generated by the electroplating operation flows into the water tank, the recycling mechanism starts to operate. First, the waste liquid flows through the filter plate that is slidably connected to the front of the inner wall of the water tank to intercept large particles of impurities and initially purify the waste liquid. Multiple heating wires on the front and back sides of the bottom of the water tank heat up to promote the evaporation of water and precipitation of solutes in the waste liquid. Then, the waste liquid passes through the filter screen to further improve the cleanliness. Finally, the water pump on the back of the outer wall of the machine box draws out the treated waste liquid through the water suction pipe connected to the left end and sends it back to the gold plating solution box for recycling through the drain pipe connected to the top. This effectively recovers resources and ensures the stable operation of the equipment and the continuous stability of the electroplating quality.

[0010] As a further description of the above technical solution:

[0011] The cover plate has a snap-fit ​​fixedly connected to the left and right sides of the front end of the outer wall, and the chassis has a buckle fixedly connected to the left and right sides of the top front end of the outer wall, and both snap-fits are engaged with the corresponding buckles.

[0012] The above technical solution allows for precise insertion of the corresponding buckles, forming a stable locking structure that effectively prevents external dust, moisture, and foreign objects from entering the chassis.

[0013] As a further description of the above technical solution:

[0014] A water inlet is provided on the top left side of the cover plate, and a sealing cap is threadedly connected to the top of the inner wall of the water inlet.

[0015] The above technical solution allows for easy replenishment of liquid during equipment operation through the water inlet, and the sealing cap effectively curbs the risk of liquid evaporation and leakage, preventing external impurities from entering the liquid inside the equipment.

[0016] As a further description of the above technical solution:

[0017] An installation box is fixedly connected to the top right side of the cover plate, and an alarm light is fixedly connected to the inner wall of the installation box.

[0018] The above technical solution enables the alarm light to flash when the equipment system detects a fault, reminding operators to intervene in a timely manner and prevent further damage to the equipment.

[0019] As a further description of the above technical solution:

[0020] The filter plate is fixedly connected to the top left and right sides with handles, and the outer walls of the two handles are fixedly connected to the left and right sides with anti-slip sleeves.

[0021] With the above technical solution: when cleaning the filter plate, the operator holds the handle, and the anti-slip sleeve provides stable friction, making it easy to pull out the filter plate to complete the cleaning and replacement.

[0022] As a further description of the above technical solution:

[0023] The bottom of the chassis is fixedly connected to feet on all four sides, and each of the feet has a positioning hole in the middle.

[0024] The above technical solution provides a stable foundation for equipment installation. By precisely engaging with the positioning pins or bolts on the workshop floor mounting base, the equipment can be accurately positioned and installed.

[0025] As a further description of the above technical solution:

[0026] A controller is fixedly connected to the right side of the outer wall of the chassis, and the controller is electrically connected to the motor, the alarm light and the water pump respectively.

[0027] Through the above technical solutions, the controller enables automated and intelligent operation of equipment through unified and efficient management, thereby improving production efficiency.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, after the motor is started, it drives the main shaft to rotate. The large gear at the rear end of the main shaft rotates accordingly, thereby driving multiple auxiliary shafts and sponge rollers to rotate synchronously. When the nozzle moves with the auxiliary shaft to the vicinity of the conveyor belt, the control valve opens according to the preset parameters. The gold plating solution is precisely sprayed from the nozzle through the water pipe to the corresponding part of the connector terminal placed on the conveyor belt, realizing high-precision local electroplating, effectively improving the quality and reliability of the product, reducing manual intervention, greatly improving production efficiency, and reducing labor costs.

[0030] 2. In this utility model, large particulate impurities are removed and intercepted by the filter plate, and the heating wire heats the waste liquid to accelerate water evaporation and solute precipitation, which is conducive to separating metal ions and impurity components in the electroplating solution. The filter screen intercepts tiny suspended impurities to ensure that the cleanliness of the waste liquid meets the reuse standard. The filtered waste liquid is extracted through the water pumping pipe and transported back to the gold plating solution box through the drain pipe to achieve recycling. This ensures stable and efficient circulation of the waste liquid, maintains the stability of the composition and performance of the electroplating solution, and reduces production costs and resource consumption. Attached Figure Description

[0031] Figure 1 This is a perspective view of the dot plating structure for electroplating gold on connector terminals proposed in this utility model;

[0032] Figure 2 This is a partial structural exploded view of the spot plating structure for electroplating gold on connector terminals proposed in this utility model;

[0033] Figure 3 This is a partial structural diagram of the spot plating structure for electroplating gold on connector terminals proposed in this utility model;

[0034] Figure 4 This is a cross-sectional view of the chassis for the spot plating structure of connector terminals for gold plating proposed in this utility model.

[0035] Figure 5 This is a partial structural diagram of the spot plating structure for electroplating gold on connector terminals proposed in this utility model;

[0036] Figure 6 This is a schematic diagram of the recycling mechanism for the spot plating structure for electroplating gold on connector terminals proposed in this utility model.

[0037] Legend:

[0038] 1. Chassis; 2. Recycling Mechanism; 201. Filter Plate; 202. Heating Wire; 203. Filter Screen; 204. Water Pump; 205. Pumping Pipe; 206. Drain Pipe; 3. Main Shaft; 4. Conveyor Belt; 5. Secondary Shaft; 6. Large Gear; 7. Gear One; 8. Sponge Roller; 9. Gear Two; 10. Nozzle; 11. Motor; 12. Water Supply Pipe; 13. Gold Plating Liquid Box; 14. Control Valve; 15. Rotating Roller; 16. Cover Plate; 17. Water Tank; 18. Bayonet; 19. Buckle; 20. Water Inlet; 21. Sealing Cover; 22. Mounting Box; 23. Alarm Light; 24. Handle; 25. Anti-slip Sleeve; 26. Foot; 27. Positioning Hole; 28. Controller. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a spot plating structure for electroplating gold on connector terminals, including a chassis 1. The chassis 1 serves as a robust outer shell and support frame for the overall equipment, providing a stable mounting base and protective barrier for the internal components. A main shaft 3 is rotatably connected to the center of the front side of the outer wall of the chassis 1. Multiple secondary shafts 5 are rotatably connected to the front side of the outer wall of the chassis 1. The multiple secondary shafts 5 are distributed in a circumferential pattern on the front side of the outer wall of the chassis 1 and are rotatably connected to the chassis 1. This layout provides evenly distributed application points for omnidirectional electroplating operations around the connector terminals, ensuring the integrity and consistency of the plating coverage. The positional accuracy of each secondary shaft 5 is controlled within a very small tolerance range, ensuring the precision of the electroplating position. A large gear 6 is fixedly connected to the rear end of the main shaft 3. Multiple secondary shafts 5 are fixedly connected to gear 7 at their rear ends. A sponge roller 8 is rotatably connected to the top front side of the outer wall of the casing 1. During the electroplating process, the sponge roller 8 smooths out minor imperfections on the plating surface, assists in the uniform dispersion of the electroplating solution, improves the uniformity and smoothness of the plating quality, and optimizes the product's appearance and performance. A gear 9 is fixedly connected to the rear end of the sponge roller 8. Multiple gears 7 and gear 9 are meshed with a large gear 6. The large gear 6 serves as the core of power distribution and forms a precision meshing transmission with gear 7 at the rear end of the secondary shaft 5 and gear 9 at the rear end of the sponge roller 8. A nozzle 10 is fixedly connected to the front side of the outer wall of multiple secondary shafts 5. The nozzle 10 is used to spray gold plating solution onto the connector terminals. A motor 1 is fixedly connected to the rear side of the outer wall of the casing 1. 1. The output end of motor 11 is fixedly connected to main shaft 3. Motor 11 drives main shaft 3 and related components to operate stably according to process requirements. Multiple auxiliary shafts 5 have water supply pipes 12 connected to their outer rear walls. Water supply pipes 12 transport the gold plating solution from gold plating solution box 13 to nozzle 10. A gold plating solution box 13 is fixedly connected to the top of the inner wall of the machine housing 1. The gold plating solution box 13 is used to store the gold plating solution. The other ends of multiple water supply pipes 12 are all connected to the gold plating solution box 13. Control valves 14 are fixedly connected to the outer walls of multiple water supply pipes 12. Control valves 14 are used to control the nozzle 10 to spray the gold plating solution when it is close to the conveyor belt 4. Rotary rollers 15 are rotatably connected to the left and right sides of the front end of the machine housing 1. A conveyor belt 4 is installed on the top of multiple rotating rollers 15. 15 provides guidance for the conveyor belt 4. The conveyor belt 4 can move smoothly by winding around the rotating roller 15. The top of the housing 1 is rotatably connected to the cover plate 16. The cover plate 16 protects the internal precision components and the electroplating operation environment, keeping it clean and stable. A water tank 17 is opened at the bottom of the inner wall of the housing 1. Electroplating waste liquid flows into the water tank 17 for easy filtration. A recycling mechanism 2 is set inside the water tank 17. The left and right sides of the front end of the outer wall of the cover plate 16 are fixedly connected to the bayonet 18. The left and right sides of the top front end of the outer wall of the housing 1 are fixedly connected to the buckle 19. Both bayonet 18 and the corresponding buckle 19 are engaged. The cover plate 16 and the housing 1 are conveniently connected by bayonet 18 and buckle 19 to prevent foreign objects from entering and interfering with the electroplating process or damaging the precision structure.A water inlet 20 is provided on the top left side of the cover plate 16. A sealing cap 21 is threadedly connected to the top of the inner wall of the water inlet 20. The sealing cap 21 is tightly connected to the water inlet 20 by the thread to prevent liquid evaporation and leakage and the intrusion of external impurities.

[0041] Specifically, after the motor 11 starts, its output drives the main shaft 3 to rotate, and the large gear 6 at the rear end of the main shaft 3 rotates accordingly. Due to the gear meshing transmission characteristics, the gear 7 at the rear end of the multiple auxiliary shafts 5 and the gear 9 at the rear end of the sponge roller 8, which mesh with the large gear 6, rotate synchronously. When the main shaft 3 rotates, it drives the conveyor belt 4 to move along the main shaft 3. Since the main shaft 3 and the auxiliary shafts 5 rotate at the same time, when the auxiliary shaft 5 rotates, the nozzle 10 fixed on the front side of its outer wall moves with the auxiliary shaft 5 to near the conveyor belt 4. At this time, the control valve 14 opens according to the preset parameters, and the molten solder is precisely sprayed from the nozzle 10 through the water pipe 12. The plating solution is sprayed onto the corresponding part of the connector terminal placed on the conveyor belt 4 to perform spot plating on the connector terminal. Then, the sponge roller 8 presses the gold plating solution on the connector terminal to make the thickness of the gold plating solution uniform. The cover plate 16 and the housing 1 are connected to each other by the bayonet 18 and the buckle 19 to achieve convenient opening and closing, preventing foreign objects from entering and interfering with the electroplating process or damaging the precision structure. The electroplating waste liquid flows into the water tank 17 for easy filtration. The water inlet 20 is used to replenish the electroplating solution required for the operation of the equipment. The sealing cover 21 is tightly connected to the water inlet 20 by threads to prevent liquid evaporation and leakage and the intrusion of external impurities.

[0042] Reference Figure 4 , Figure 5 and Figure 6The recycling mechanism 2 includes a filter plate 201, which is slidably connected to the front side of the inner wall of the water tank 17. The filter plate 201 intercepts large particles of impurities in the electroplating waste liquid, preventing them from damaging subsequent equipment components or affecting the processing flow. Multiple heating wires 202 are fixedly connected to the front and rear sides of the bottom of the inner wall of the water tank 17. The heating wires 202 promote the evaporation of water and the concentration and precipitation of solutes in the waste liquid, achieving preliminary separation and purification. A filter screen 203 is fixedly connected to the middle of the inner wall of the water tank 17. The filter screen 203 further intercepts small suspended impurities, ensuring that the cleanliness of the waste liquid entering subsequent circulation or discharge stages meets the standards. A water pump 204 is fixedly connected to the rear side of the outer wall of the casing 1. The left end of the water pump 204 is connected to a water suction pipe 205, which pumps... The other end of the water pipe 205 is connected to the water tank 17. The water pump 204 is connected to the water tank 17 through the water pump pipe 205 to powerfully extract the treated waste liquid. The top of the water pump 204 is connected to the drain pipe 206. The other end of the drain pipe 206 is connected to the gold plating solution box 13. The drain pipe 206 connected to the top of the water pump 204 accurately transports the extracted waste liquid back to the gold plating solution box 13 for recycling. The top left and right sides of the filter plate 201 are fixedly connected to handles 24. The left and right sides of the outer wall of the two handles 24 are fixedly connected to anti-slip sleeves 25. The handles 24 on the top left and right sides of the filter plate 201 provide convenient leverage points for operators to clean and replace the filter plate 201. The anti-slip sleeves 25 enhance the grip friction and ensure stable and precise operation.

[0043] Specifically, after the waste liquid flows into the water tank 17, it first passes through the filter plate 201 for coarse filtration to remove larger impurities and prevent them from damaging subsequent equipment components. The heating wire 202 heats the waste liquid to accelerate water evaporation and solute precipitation, which is conducive to separating metal ions and impurities in the electroplating solution. The filter screen 203 further intercepts tiny suspended impurities in the middle of the water tank 17 to ensure that the cleanliness of the waste liquid meets the reuse standard. The water pump 204 draws the filtered waste liquid through the water pipe 205 and sends it back to the gold plating solution box 13 through the drain pipe 206 for recycling. When cleaning the filter plate 201, the operator holds the handle 24, and the anti-slip sleeve 25 provides stable friction to easily pull the filter plate 201 to complete the cleaning and replacement.

[0044] Reference Figure 1 , Figure 3 and Figure 5A mounting box 22 is fixedly connected to the top right side of the cover plate 16. An alarm light 23 is fixedly connected to the inner wall of the mounting box 22. When the equipment system detects a fault, the alarm light 23 will flash to remind the operator to intervene in time and prevent further damage to the equipment. Feet 26 are fixedly connected to the bottom of the chassis 1 around all four sides. Positioning holes 27 are opened in the middle of the multiple feet 26. The feet 26 are the foundation structure for stabilizing the equipment installation. By precisely cooperating with the positioning pins or bolts of the installation base on the workshop floor, the equipment can be accurately positioned and installed. A controller 28 is fixedly connected to the right side of the outer wall of the chassis 1. The controller 28 is electrically connected to the motor 11, the alarm light 23 and the water pump 204 respectively. The controller 28 realizes the automated and intelligent operation of the equipment through unified and efficient management, thereby improving production efficiency.

[0045] Specifically, when the equipment system detects a fault, the alarm light 23 will flash to remind the operator to intervene in time and prevent further damage to the equipment; the foot 26 is a stable foundation structure for equipment installation. Through precise cooperation with the positioning pins or bolts of the installation base on the workshop floor, the equipment can be accurately positioned and installed, avoiding vibration and displacement caused by unstable equipment installation that may affect the coating quality; the controller 28 realizes automated and intelligent operation of the equipment through unified and efficient management, thereby improving production efficiency.

[0046] Working principle: Before using the device, the motor 11 starts and drives the main shaft 3 to rotate. The large gear 6 at the rear end of the main shaft 3 rotates accordingly, thereby driving the gears 7 at the rear end of the multiple auxiliary shafts 5 and the gears 9 at the rear end of the sponge roller 8 to rotate synchronously. When the main shaft 3 rotates, it drives the conveyor belt 4 to move along the main shaft 3. Since the main shaft 3 and the auxiliary shafts 5 rotate simultaneously, when the auxiliary shaft 5 rotates and the nozzle 10 moves close to the conveyor belt 4, the control valve 14 opens according to preset parameters. The gold plating solution is precisely sprayed from the nozzle 10 through the water pipe 12 onto the corresponding part of the connector terminal placed on the conveyor belt 4, thereby achieving precise spraying so that both sides of the connector terminal are coated with gold plating solution. Subsequently, the sponge roller 8 presses the gold plating solution on the connector terminal, so that the gold plating solution... The thickness is consistent; and the waste liquid generated by the equipment operation is efficiently treated and recycled through the recycling mechanism 2. The filter plate 201 is slidably installed on the front side of the inner wall of the water tank 17, which facilitates the regular cleaning of intercepted large particles of impurities. After the waste liquid flows into the water tank 17, it is first coarsely filtered by the filter plate 201 to remove larger impurities. The heating wire 202 heats the waste liquid to accelerate water evaporation and solute precipitation, which is conducive to separating metal ions and impurity components in the electroplating solution. The filter screen 203 further intercepts small suspended impurities to ensure that the cleanliness of the waste liquid meets the reuse standard. The filtered waste liquid is extracted through the water pumping pipe 205 and transported back to the gold plating solution box 13 through the drain pipe 206 to achieve recycling, ensuring stable and efficient circulation of waste liquid, maintaining the stability of the composition and performance of the electroplating solution, and reducing production costs and resource consumption.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spot plating structure for electroplating gold on connector terminals, comprising a chassis (1), characterized in that: A main shaft (3) is rotatably connected to the middle of the front side of the outer wall of the casing (1). Multiple secondary shafts (5) are rotatably connected to the front side of the outer wall of the casing (1). A large gear (6) is fixedly connected to the rear end of the main shaft (3). Gear 1 (7) is fixedly connected to the rear end of each of the multiple secondary shafts (5). A sponge roller (8) is rotatably connected to the top of the front side of the outer wall of the casing (1). Gear 2 (9) is fixedly connected to the rear end of the sponge roller (8). Multiple gear 1 (7) and gear 2 (9) are meshed with the large gear (6). A nozzle (10) is fixedly connected to the front side of the outer wall of each of the multiple secondary shafts (5). A motor (11) is fixedly connected to the rear side of the outer wall of the casing (1). The motor (11) outputs... The outlet is fixedly connected to the main shaft (3), and the rear side of the outer wall of the multiple auxiliary shafts (5) is connected to a water supply pipe (12). The top of the inner wall of the machine box (1) is fixedly connected to a gold plating liquid box (13). The other end of the multiple water supply pipes (12) is connected to the gold plating liquid box (13). The outer wall of the multiple water supply pipes (12) is fixedly connected to a control valve (14). The left and right sides of the front end of the machine box (1) are rotatably connected to rotating rollers (15). The top of the multiple rotating rollers (15) is provided with a conveyor belt (4). The top of the machine box (1) is rotatably connected to a cover plate (16). A water tank (17) is opened at the bottom of the inner wall of the machine box (1). A recycling mechanism (2) is provided inside the water tank (17).

2. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: The recycling mechanism (2) includes a filter plate (201), which is slidably connected to the front side of the inner wall of the water tank (17). Multiple heating wires (202) are fixedly connected to the front and rear sides of the bottom of the inner wall of the water tank (17). A filter screen (203) is fixedly connected to the middle of the inner wall of the water tank (17). A water pump (204) is fixedly connected to the rear side of the outer wall of the casing (1). The left end of the water pump (204) is connected to a water suction pipe (205). The other end of the water suction pipe (205) is connected to the water tank (17). The top of the water pump (204) is connected to a drain pipe (206). The other end of the drain pipe (206) is connected to the gold plating liquid box (13).

3. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: The cover plate (16) has a bayonet (18) fixedly connected to the left and right sides of the front end of the outer wall, and the chassis (1) has a buckle (19) fixedly connected to the top left and right sides of the front end of the outer wall, and the two bayonet (18) are engaged with the corresponding buckle (19).

4. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: A water inlet (20) is provided on the top left side of the cover plate (16), and a sealing cap (21) is threadedly connected to the top of the inner wall of the water inlet (20).

5. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: An installation box (22) is fixedly connected to the top right side of the cover plate (16), and an alarm light (23) is fixedly connected to the inner wall of the installation box (22).

6. The spot plating structure for electroplating gold on connector terminals according to claim 2, characterized in that: The filter plate (201) is fixedly connected to the top left and right sides with handles (24), and the outer walls of the two handles (24) are fixedly connected to the left and right sides with anti-slip sleeves (25).

7. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: The bottom of the chassis (1) is fixedly connected with feet (26) on all four sides, and positioning holes (27) are opened in the middle of the feet (26).

8. The spot plating structure for electroplating gold on connector terminals according to claim 1, characterized in that: A controller (28) is fixedly connected to the right side of the outer wall of the chassis (1). The controller (28) is electrically connected to the motor (11), the alarm light (23) and the water pump (204).

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