A high uniformity silver plating process suitable for deep blind via features

Abstract

The application discloses a high-uniformity silver plating process suitable for deep blind hole features and relates to the field of part surface treatment, and comprises a supporting table, one side of the supporting table is provided with a supporting column, the top end of the supporting column is provided with a top base, one side of the top end of the top base is provided with a gas cylinder, the bottom end of the gas cylinder is provided with a telescopic end, the bottom end of the telescopic end penetrates through the top base, the bottom end of the penetrating end is provided with a lifting table, the top end of the lifting table is provided with a clamping base, the telescopic end is clamped in the inside of the clamping base, two through grooves are formed in one side of the top end of the lifting table, personnel can align a conical cylinder with a deep hole in the side of a silver-plated part, at the moment, a motor is started, the conical cylinder is rotated through a driving shaft, at the moment, cleaning strips outside the conical cylinder rotate in the hole, dust, impurities and liquid residues in the hole are cleaned, and it is to be noted that the cleaning strips are soft materials and can be extruded.

Description

Technical Field

[0001] This invention relates to the field of surface treatment of parts, and in particular to a highly uniform silver plating process suitable for deep blind hole features. Background Technology

[0002] In the production of copper parts for communication applications, electroplating is the main process. Depending on the requirements of the parts, one or more single metal or alloy electroplating processes are selected to electroplat or dip-plat the parts to achieve the purposes of corrosion resistance, wear resistance and aesthetics.

[0003] Some components need to be silver-plated inside holes. Before silver plating, the components need to be cleaned with chemical liquid. The holes of the silver-plated components are machined, while the holes of the deep-hole components are welded. There are thick layers of dirt, residual flux, and oxides inside the deep holes. These dirt are difficult to clean in the deep holes. If they are not cleaned properly, they will affect the silver plating process. In addition, since some holes are made on the side of the components, they are even more difficult to clean.

[0004] Therefore, it is necessary to propose a highly uniform silver plating process suitable for deep blind hole features to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a highly uniform silver plating process suitable for deep blind hole features, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-uniformity silver plating process suitable for deep blind holes, comprising the following steps: First, use cotton yarn dipped in gasoline or other organic solvents to wipe the inner and outer surfaces of the workpiece, especially for deep inner holes, the wiping should be strengthened. For deeper holes with a certain curvature, special tools should be made according to the shape of the hole to wipe the oil and flux on the inner surface of the workpiece.

[0007] The second step is to inject cleaning liquid into the hole and use a cleaning device to remove oil and clean the hole.

[0008] The third step is to use auxiliary anodes for deep hole parts. The placement of the auxiliary anodes must be very careful. In addition, for the auxiliary anodes inside the deep hole, cross-shaped fixing clips are threaded onto the silver wire to ensure that the auxiliary anodes are located in the center of the deep hole, so that the silver wire and the hole can be electroplated.

[0009] A high-uniformity silver plating process suitable for deep blind hole features further includes a support platform. A support column is provided on one side of the support platform, and a top seat is provided at the top of the support column. A cylinder is provided on one side of the top of the top seat, and a telescopic end is provided at the bottom of the cylinder. The bottom end of the telescopic end passes through the top seat, and a lifting platform is provided at the bottom end of the passing end. A retaining seat is provided at the top of the lifting platform, and the telescopic end is engaged inside the retaining seat. Two through slots are opened on one side of the top of the lifting platform, and a cleaning device is provided on each of the two through slots. The cleaning device includes two upright plates, which are respectively provided on both sides of the through slots. A rotating plate is rotatably arranged between the two upright plates. A motor is provided on one side of the rotating plate, and a drive shaft is provided at the bottom of the motor. The drive shaft passes through the rotating plate, and the passing end is connected to a base plate. A retaining ring is provided on the side of the base plate away from the rotating plate.

[0010] Preferably, the retaining ring has a conical cylinder inside, and the bottom of the outer ring of the conical cylinder is evenly provided with a plurality of cleaning strips.

[0011] Preferably, the bottom end of the conical cylinder has a through hole, and the end of the conical cylinder near the retaining ring is provided with a connecting ring, the outer ring of which has an annular groove.

[0012] Preferably, an air pump is provided on one side of the base plate, a connecting pipe is provided between the air pump and the retaining ring, one end of the drive shaft passes through the retaining ring and is connected to the conical cylinder.

[0013] Preferably, the top of the support platform is provided with a support plate, and the top of the support plate is provided with a top platform.

[0014] Preferably, a heating plate is provided at the top of the top platform, and a silver-plated part is engaged at the top of the heating plate.

[0015] Preferably, both ends of the rotating plate are provided with rotating shafts, which rotate on the two upright plates. One of the rotating shafts passes through the rotating plate, and an auxiliary handle is provided at the end through which it passes.

[0016] Preferably, a fixing block is provided at the center of the top of the lifting platform, and telescopic members are provided at the four corners of the bottom of the fixing block. The bottom end of the telescopic member passes through the lifting platform, and the passing end is connected to a pressing plate.

[0017] Preferably, the telescopic component includes a telescopic rod and a spring, with the spring sleeved on the outside of the telescopic rod.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. In the actual operation of the present invention, the user can rotate the auxiliary handle to make the rotating plate rotate on the two upright plates, so that the conical cylinder at the bottom end of the base plate can be tilted at an angle inside the through groove, and the silver-plated parts with different tilt angles can be cleaned inside the holes.

[0020] 2. Personnel can align the conical cylinder with the deep hole on the side of the silver-plated part. At this time, the motor starts and drives the conical cylinder to rotate through the drive shaft. The cleaning strip on the outside of the conical cylinder will rotate inside the hole to clean the dust, impurities and liquid residue inside the hole. It should be noted that the cleaning strip is made of soft material and can be squeezed.

[0021] 3. In addition, while the conical cylinder is rotating for cleaning, the air pump starts and high-pressure gas is introduced into the inside of the retaining ring through the connecting pipe. Since there is a connecting ring on the side of the conical cylinder near the retaining ring and the outer ring of the connecting ring has an annular groove, the high-pressure gas is introduced into the inside of the conical cylinder through the annular groove and into the inside of the silver-plated part through the through hole at the bottom of the conical cylinder, blowing out the residual liquid and dust impurities. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the high-uniformity silver plating equipment applicable to deep blind hole features according to the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the card holder, lifting platform, and through groove of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the telescopic component and the extrusion plate of the present invention.

[0025] Figure 4 This is a schematic diagram of the cleaning device of the present invention.

[0026] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle.

[0027] Figure 6 This is a schematic diagram of the top platform and heating plate structure of the present invention.

[0028] Figure 7 This is a schematic diagram of the connecting ring and ring groove of the present invention.

[0029] In the diagram: 1. Support platform; 2. Support plate; 3. Support column; 4. Top seat; 5. Cylinder; 6. Telescopic end; 7. Card seat; 8. Lifting platform; 9. Through groove; 10. Fixing block; 11. Telescopic component; 12. Extrusion plate; 13. Vertical plate; 14. Auxiliary handle; 15. Rotating plate; 16. Motor; 17. Base plate; 18. Drive shaft; 19. Snap ring; 20. Air pump; 21. Connecting pipe; 22. Conical cylinder; 23. Cleaning strip; 24. Top platform; 25. Heating plate; 26. Silver-plated part; 27. Connecting ring; 28. Ring groove; 29. ​​Cleaning device. Detailed Implementation

[0030] 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 embodiments 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.

[0031] This invention provides, for example Figures 1-7 The invention illustrates a high-uniformity silver plating process suitable for deep blind hole features, comprising a support platform 1, a support column 3 on one side of the support platform 1, a top seat 4 at the top of the support column 3, a cylinder 5 on one side of the top of the top seat 4, a telescopic end 6 at the bottom of the cylinder 5, the bottom of the telescopic end 6 passing through the top seat 4, and a lifting platform 8 at the bottom of the passing end, a retaining seat 7 at the top of the lifting platform 8, and the telescopic end 6 engaging inside the retaining seat 7. In actual operation of the invention, when the cylinder 5 is activated, the telescopic end 6 can drive the lifting platform 8 at the bottom to move up and down.

[0032] Additionally, a support plate 2 is provided at the top of the support platform 1, a top platform 24 is provided at the top of the support plate 2, and a heating plate 25 is provided at the top of the top platform 24. A silver-plated part 26 is engaged at the top of the heating plate 25.

[0033] Place the silver-plated part 26 at the bottom of the heating plate 25 and lock it in place. At this time, the heating plate 25 is activated, and the heating wire inside the heating plate 25 heats the silver-plated part 26, which can dry the gaps or holes of the silver-plated part 26 and prevent moisture or liquid residue from remaining during the silver plating process, which would lead to silver plating failure.

[0034] Two through slots 9 are provided on one side of the top of the lifting platform 8. Each through slot 9 is equipped with a cleaning device 29. The cleaning device 29 includes a vertical plate 13. There are two vertical plates 13, which are respectively located on both sides of the through slot 9. A rotating plate 15 is rotatably arranged between the two vertical plates 13. A motor 16 is provided on one side of the rotating plate 15. A drive shaft 18 is provided at the bottom end of the motor 16. The drive shaft 18 passes through the rotating plate 15 and is connected to a base plate 17 at the end of the shaft. A retaining ring 19 is provided on the side of the base plate 17 away from the rotating plate 15.

[0035] The retaining ring 19 has a conical cylinder 22 inside. Multiple cleaning strips 23 are evenly arranged at the bottom of the outer ring of the conical cylinder 22. A through hole is opened at the bottom end of the conical cylinder 22. A connecting ring 27 is provided at the end of the conical cylinder 22 near the retaining ring 19. A ring groove 28 is opened on the outer ring of the connecting ring 27.

[0036] An air pump 20 is provided on one side of the base plate 17. A connecting pipe 21 is provided between the air pump 20 and the retaining ring 19. One end of the drive shaft 18 passes through the retaining ring 19 and is connected to the conical cylinder 22. Both ends of the rotating plate 15 are provided with rotating shafts. The rotating shafts rotate on two vertical plates 13. One of the rotating shafts passes through the rotating plate 15 and is provided with an auxiliary handle 14 at the end of the shaft that passes through it.

[0037] In actual operation of the present invention, the user can rotate the auxiliary handle 14 to make the rotating plate 15 rotate on the two upright plates 13, so that the tapered cylinder 22 at the bottom end of the base plate 17 can be tilted at an angle inside the through groove 9, and the silver-plated parts 26 with different tilt angles can be cleaned inside the holes.

[0038] Personnel can align the conical cylinder 22 with the deep hole on the side of the silver-plated part 26. At this time, the motor 16 starts and drives the conical cylinder 22 to rotate through the drive shaft 18. At this time, the cleaning strip 23 on the outside of the conical cylinder 22 will rotate inside the hole to clean the dust, impurities and liquid residue inside the hole. It should be noted that the cleaning strip 23 is made of soft material and can be squeezed.

[0039] In addition, while the conical cylinder 22 is rotating for cleaning, the air pump 20 is started, and high-pressure gas is input into the inside of the retaining ring 19 through the connecting pipe 21. Since the conical cylinder 22 is provided with a connecting ring 27 on the side near the retaining ring 19, and the outer ring of the connecting ring 27 is provided with an annular groove 28, the high-pressure gas is input into the inside of the conical cylinder 22 through the annular groove 28, and is input into the inside of the silver-plated part 26 through the through hole opened at the bottom of the conical cylinder 22, blowing out residual liquid and dust impurities from the hole.

[0040] A fixing block 10 is provided at the center of the top of the lifting platform 8. Telescopic components 11 are provided at the four corners of the bottom of the fixing block 10. The bottom end of the telescopic component 11 passes through the lifting platform 8 and is connected to the pressing plate 12 at the passing end. The telescopic component 11 includes a telescopic rod and a spring, with the spring sleeved on the outside of the telescopic rod.

[0041] In the actual operation of the present invention, when the lifting platform 8 descends to a certain height, the pressing plate 12 will press and fix the silver-plated part 26 to prevent the silver-plated part 26 from moving.

[0042] In addition, this invention discloses a high uniformity silver plating process suitable for deep blind hole features, including the following steps: S1, use cotton yarn dipped in gasoline or other organic solvents to wipe the inner and outer surfaces of the workpiece, especially for deep inner holes, the wiping should be strengthened. For deeper holes with a certain curvature, special tools should be made according to the shape of the hole to wipe the oil and flux on the inner surface of the workpiece.

[0043] S2. Introduce cleaning liquid into the hole and use cleaning device 29 to clean the hole by removing oil.

[0044] S3. For deep hole parts, auxiliary anodes are used, and the placement of auxiliary anodes must be very careful. In addition, for auxiliary anodes inside deep holes, cross-shaped fixing clips are threaded onto the silver wire to ensure that the auxiliary anode is located in the center of the deep hole, so that the silver wire and the hole can be electroplated.

Claims

1. A highly uniform silver plating process suitable for deep blind hole features, characterized in that: Includes the following steps: S1. Use cotton yarn soaked in gasoline or other organic solvents to wipe the inner and outer surfaces of the workpiece. Strengthen the cleaning of deep inner holes. For deeper holes with a certain curvature, special tools should be made according to the shape of the hole to wipe the oil and flux on the inner surface of the workpiece. S2. Introduce cleaning liquid into the hole and prepare the cleaning device (29). Use the cleaning device (29) to clean the hole by removing oil. S3. For deep hole parts, auxiliary anodes are used. In addition, for the auxiliary anodes inside the deep hole, cross-shaped fixing clips are threaded on the silver wire to ensure that the auxiliary anode is located in the center of the deep hole, so that the silver wire and the hole can be electroplated. It also includes a support platform (1), on one side of which a support column (3) is provided, and at the top of the support column (3) a top seat (4) is provided. On one side of the top of the top seat (4) a cylinder (5) is provided, and at the bottom of the cylinder (5) a telescopic end (6) is provided. The bottom of the telescopic end (6) passes through the top seat (4), and at the bottom of the passing end a lifting platform (8) is provided. At the top of the lifting platform (8) a card seat (7) is provided, and the telescopic end (6) is engaged inside the card seat (7). Two through slots (9) are opened on one side of the top of the lifting platform (8), and the cleaning device (29) is provided with two... Two cleaning devices (29) are respectively installed on the through groove (9). Each cleaning device (29) includes a vertical plate (13). There are two vertical plates (13), which are respectively installed on both sides of the through groove (9). A rotating plate (15) is rotatably installed between the two vertical plates (13). A motor (16) is installed on one side of the rotating plate (15). A drive shaft (18) is installed at the bottom end of the motor (16). The drive shaft (18) passes through the rotating plate (15) and is connected to a base plate (17) at the end of the shaft. A retaining ring (19) is installed on the side of the base plate (17) away from the rotating plate (15). The snap ring (19) has a conical cylinder (22) inside, and a plurality of cleaning strips (23) are evenly arranged at the bottom of the outer ring of the conical cylinder (22). The bottom end of the conical cylinder (22) is provided with a through hole, and a connecting ring (27) is provided at one end of the conical cylinder (22) near the retaining ring (19). The outer ring of the connecting ring (27) is provided with an annular groove (28). An air pump (20) is provided on one side of the base plate (17), and a connecting pipe (21) is provided between the air pump (20) and the retaining ring (19). One end of the drive shaft (18) passes through the retaining ring (19) and is connected to the conical cylinder (22).

2. The high-uniformity silver plating process suitable for deep blind hole features according to claim 1, characterized in that: The top of the support platform (1) is provided with a support plate (2), and the top of the support plate (2) is provided with a top platform (24).

3. The high-uniformity silver plating process suitable for deep blind hole features according to claim 2, characterized in that: A heating plate (25) is provided at the top of the top platform (24), and a silver-plated part (26) is engaged at the top of the heating plate (25).

4. The high-uniformity silver plating process suitable for deep blind hole features according to claim 2, characterized in that: Both ends of the rotating plate (15) are provided with rotating shafts. One end of the rotating shaft rotates on two upright plates (13). One of the rotating shafts passes through the rotating plate (15) and is provided with an auxiliary handle (14) at the end of the shaft.

5. The high-uniformity silver plating process suitable for deep blind hole features according to claim 1, characterized in that: A fixing block (10) is provided at the middle of the top of the lifting platform (8). A telescopic member (11) is provided at each of the four corners of the bottom of the fixing block (10). The bottom end of the telescopic member (11) passes through the lifting platform (8) and is connected to a pressing plate (12).

6. The high-uniformity silver plating process suitable for deep blind hole features according to claim 5, characterized in that: The telescopic component (11) includes a telescopic rod and a spring, with the spring sleeved on the outside of the telescopic rod.

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