A number marking method and number collection device for circuit board electroplating

Abstract

The present application relates to a numbering marking method and numbering collection device for circuit board electroplating, which relates to the technical field of circuit board production, and includes the following steps: S1, regular arrangement; S2, making marking grooves, aligning the two ends of the engraved jig with digital scales with the reference plane on the basket, finding the digital scale lines corresponding to the basket numbers on the engraved jig, and the engraved device engraves marking grooves at the corresponding digital scale lines, and the marking grooves extend to each circuit board; S3, surface cleaning; S4, electroplating; S5, post-processing; S6, return inspection, aligning the two ends of the indicating device with the reference plane on the basket of the electroplated circuit board, and reading the corresponding number of the circuit board according to the numbers on the engraved jig corresponding to each marking groove, and comparing it with the number on the basket. The present application has the effect of clear markings on the circuit board after electroplating, and being able to accurately read the corresponding number of the circuit board according to the markings, so that the accuracy of matching the circuit board with the basket is higher.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board production, and in particular to a number marking method and a number collection device for circuit board electroplating. Background Art

[0002] During the production of circuit boards, the circuit boards need to be electroplated. Electroplating can increase the contact area between the pins and pads, reduce contact resistance, and allow current to pass more smoothly, thereby improving the connection reliability between the circuit board and the external circuit and reducing problems such as signal transmission interruption or distortion caused by poor contact. When electroplating circuit boards, circuit boards in different baskets are usually placed together for electroplating. In order to prevent confusion between circuit boards with different functions, the circuit boards before electroplating are usually matched with the numbers of the corresponding baskets.

[0003] The existing method of matching the circuit board with the basket is usually to use a marker pen to leave a mark on the circuit board, and then match the mark with the corresponding basket number. However, the mark on the circuit board is easily covered after electroplating and is difficult to identify, resulting in poor accuracy in matching the circuit board with the basket. Summary of the invention

[0004] In order to improve the problem of construction safety during the construction process, the present application provides a number marking method and a number collection device for circuit board electroplating.

[0005] On the one hand, the present application provides a circuit board electroplating number marking method using the following technical solution:

[0006] A method for marking numbers for electroplating a circuit board comprises the following steps:

[0007] S1. Arrange neatly, stack the circuit boards neatly in the basket so that both ends of each circuit board are aligned;

[0008] S2. Make a marking groove, align the two ends of the marking fixture with digital scales with the reference surface on the basket, find the digital scale line corresponding to the basket number on the marking fixture, and then use the marking device to carve a marking groove at the corresponding digital scale line, and the marking groove extends to each circuit board;

[0009] S3, surface cleaning, thoroughly clean the circuit board to remove oil stains and oxide impurities;

[0010] S4, electroplating, reducing metal ions by electrolysis and depositing them on the circuit board to form a conductive layer, the conductive layer adheres to the groove wall of the marking groove, and forms a groove structure in the marking groove;

[0011] S5, post-processing, cleaning, drying and annealing the electroplated circuit board;

[0012] S6. Check the returned goods. Align the two ends of the indicating device with the reference surface on the basket of the electroplated circuit board. Then read the number of the circuit board according to the number on the indicating device corresponding to each marking slot. Then compare it with the number on the basket. If there is no error, place the circuit board in the qualified area. If there is an error, place the circuit board in the problem area.

[0013] By adopting the above technical scheme, according to the basket number, a marking groove is engraved at the corresponding number on the engraving fixture through the engraving device. When the circuit board is electroplated, the marking line still remains, and then the number corresponding to the circuit board is read by the indicating device and compared with the basket number to distinguish whether the circuit board and the basket number match accurately. Compared with the existing marking method of marking with a marker pen, the marking of the circuit board after electroplating in this scheme is clear and easy to identify, and the corresponding number of the circuit board can be accurately read according to the mark, so that the accuracy of matching between the circuit board and the basket is higher.

[0014] Preferably, in step S2, the marking side of the engraving fixture is divided into units, tens, hundreds, ... digit areas, each digit area is engraved with 0, 1, 2, ... digit scale lines equidistantly along the same direction, and the distance between two adjacent digit areas is D.

[0015] By adopting the above technical solution, the marking fixture is used to distinguish different digital areas, so as to facilitate reading the number of the circuit board. The two digital areas are set at an interval D to avoid the two digital areas being too close to each other, thereby improving the accuracy of reading the marking groove.

[0016] Preferably, the marking device is an air grinder, and the marking groove is ground out on the side of the circuit board by the air grinder.

[0017] By adopting the above technical solution, the marking groove is ground out by a gas grinder, which has high processing efficiency, low equipment cost and simple maintenance.

[0018] Preferably, the marking fixture is provided with a marking line hole corresponding to each digital scale line, the marking line holes are arranged parallel to each other, and the length of the marking line hole is greater than the height of the circuit board stacked in the basket;

[0019] When making the marking groove, lay the marking jig flat on one side of the stacked circuit boards and fit it to the stacked circuit boards, then select the digital scale line corresponding to the basket number on the marking jig, and then use an air grinder to grind the marking groove on the side of the circuit board along the corresponding digital scale line.

[0020] By adopting the above technical solution, a marking groove is ground out on the side of the circuit board along the engraved linear hole using an air grinder. The engraved linear hole has a guiding effect on the engraving line of the air grinder, so that the marking groove is engraved more accurately.

[0021] Preferably, when the marking groove is ground out by an air grinder, the air grinding head of the air grinder is tilted and the marking line is made along the edge of the marking linear hole.

[0022] By adopting the above technical solutions, the tilted grinding head can better control the depth and width of the engraved line. By adjusting the tilt angle, material can be removed more accurately, resulting in a more uniform engraved effect. The tilt of the grinding head can disperse the cutting force and avoid the high stress concentration caused by the vertical contact between the grinding head and the workpiece surface. Engraving along the edge of the engraved linear hole can ensure a more stable and consistent engraved path.

[0023] On the other hand, the present application provides a circuit board electroplating number collection device that adopts the following technical solution:

[0024] A number collection device for circuit board electroplating uses the above-mentioned number marking method for circuit board electroplating, including a manipulator, a measuring board, a data collection module, and a data analysis module. The manipulator is connected to the measuring board so as to be able to align the measuring board with the reference surface on the lifting basket. The data collection module can collect the digital number on the measuring board corresponding to the marking groove, as well as the number of the lifting basket, and transmit the two sets of number data to the data analysis module, and the data analysis module compares and analyzes the two sets of number data.

[0025] By adopting the above technical solution, when detecting whether the circuit board matches the basket number, the robot aligns the measuring plate with the reference surface on the basket, and then respectively collects the basket number and the circuit board number through the data acquisition module, and converts them into digital signals and inputs them into the data analysis module. The data analysis module compares and analyzes the two sets of label data, completes the matching analysis of the circuit board and the replacement number, and adopts automatic changing equipment instead of manual methods to improve the accuracy and convenience of matching and comparing the circuit board and the basket number.

[0026] Preferably, the data acquisition module includes a basket acquisition component and a circuit board acquisition component, the basket acquisition component can acquire the basket number data, and the circuit board acquisition component can acquire the circuit board number data.

[0027] By adopting the above technical solution, the basket collection component is used to collect the basket number, and the circuit board collection component is used to collect the circuit board number, thereby realizing the collection of two groups of number data.

[0028] Preferably, the measuring board is provided with a measuring surface which is in contact with the circuit board, a collecting cavity is provided in the measuring board, a sliding hole which is connected with the collecting cavity is provided on the measuring surface, and the sliding hole corresponds to the digital scale lines on the measuring board one by one;

[0029] The circuit board collection component includes a barcode scanner, a barcode assembly and an adjustment rod. The adjustment rod corresponds to the sliding hole one by one and is slidably connected in the sliding hole. The barcode assembly includes a black code plate and a plurality of white code plates. The black code plate is arranged in the collection cavity. The white code plate is arranged in front of the black code plate. The white code plate can form white stripes on the black code plate to form a barcode structure. The barcode scanner is arranged on the measuring board and can scan and identify the barcode structure and generate a corresponding digital number. The adjustment rod is connected to the barcode plate.

[0030] The end of the adjusting rod can extend out of the sliding hole. When the measuring surface is in contact with the circuit board, the adjusting rod corresponding to the marking groove remains stationary, and the other adjusting rods are squeezed by the circuit board and contracted in the sliding hole, so as to control the white code plate to move away from the black code plate.

[0031] By adopting the above technical solution, when collecting the circuit board numbering data, the manipulator drives the measuring surface to fit sideways with the circuit board, the adjustment rod corresponding to the marking groove remains stationary, and the other adjustment rods are retracted into the sliding hole, and the white code plate is controlled to move away from the black code plate, thereby changing the arrangement of the black code plate and the white code plate. The barcode scanner generates a corresponding digital number according to the barcode structure composed of the black code plate and the white code plate, thereby realizing the automatic collection of the circuit board number and improving the convenience of collecting the circuit board number.

[0032] Preferably, the measuring plate is provided with a clearance cavity below the collection cavity, and a clearance hole connected to the collection cavity is provided on the cavity wall of the clearance cavity, the clearance holes correspond to the white code plates one by one, and the white code plates are slidably inserted in the clearance holes, and each of the adjustment rods is connected to the white code plate through a control member, and the control member can guide the white code plate to retract into the clearance cavity so as to change the bar code structure.

[0033] By adopting the above technical solution, when the adjusting rod slides, the adjusting rod controls the white code plate to retract into the making way cavity through the making way hole through the control member, thereby realizing the change of the arrangement of black and white stripes in the bar code structure.

[0034] Preferably, the control member includes a resistance switch and an electromagnet, the electromagnet is arranged below the white code plate so as to be able to absorb the white code plate and move, the resistance switch is opposite to the adjustment rod, the adjustment rod can be in contact with the resistance switch, so that the resistance switch is in a conducting state, and a telescopic spring connected to the adjustment rod is provided on the measuring plate, and the telescopic spring can drive the adjustment rod to extend out of the sliding hole and disengage from the resistance switch;

[0035] The white code plate is connected to the cavity wall of the give way cavity via a return spring, and the return spring can push the white code plate to slide onto the black code plate.

[0036] By adopting the above technical solution, when the adjusting rod slides, the adjusting rod is connected to the resistance switch, so that the electromagnet is energized, and the electromagnet absorbs and retracts the white code plate into the yield cavity, thereby realizing the control of the movement of the white code plate.

[0037] In summary, the present application includes at least one of the following beneficial technical effects:

[0038] 1. According to the basket number, a marking groove is engraved at the corresponding number on the engraving fixture through the engraving device. After the circuit board is electroplated, the marking line still remains. Then the number corresponding to the circuit board is read by the indicating device and compared with the basket number to distinguish whether the circuit board and the basket number match accurately. Compared with the existing marking method of the marker pen, the marking of the circuit board after electroplating in this scheme is clear and easy to identify, and the number corresponding to the circuit board can be accurately read according to the mark, so that the accuracy of matching between the circuit board and the basket is higher;

[0039] 2. The tilted grinding head can better control the depth and width of the engraved line. By adjusting the tilt angle, the material can be removed more accurately, thus achieving a more uniform engraving effect;

[0040] 3. The robot aligns the measuring plate with the reference surface on the basket, and then collects the basket number and the circuit board number respectively through the data acquisition module, and converts them into digital signals and inputs them into the data analysis module. The data analysis module compares and analyzes the two sets of label data, completes the matching analysis of the circuit board and the replacement number, and uses automatic changing equipment instead of manual methods to improve the accuracy and convenience of matching and comparing the circuit board and basket numbers. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of a number collection device for circuit board electroplating according to an embodiment of the present application.

[0042] Figure 2 It is a schematic diagram used to show the structure of the measurement board.

[0043] Figure 3 This is a front view showing the measuring plate.

[0044] Figure 4 is along Figure 3 Section view along line AA.

[0045] Figure 5 yes Figure 4 Enlarged view of part B in the middle.

[0046] Figure 6 is a top view showing the measurement board.

[0047] Figure 7 along Figure 6 Sectional view along the CC line.

[0048] Figure 8 yes Figure 7 Enlarged view of part D in the middle.

[0049] Fig. 9 This is an exploded view showing the coordination between the engraving fixture and the basket.

[0050] Explanation of the reference numerals in the accompanying drawings: 1. Manipulator; 2. Measuring plate; 21. Measuring surface; 22. Sliding hole; 23. Collection cavity; 24. Give way cavity; 25. Give way hole; 3. Data acquisition module; 4. Data analysis module; 31. Basket collection part; 311. Visual collection head; 32. Circuit board collection part; 321. Barcode scanning part; 322. Barcode assembly; 3221. Black code board; 3222. White code board; 323. Adjustment rod; 33. Control part; 331. Resistance switch; 332. Electromagnet; 333. Telescopic spring; 334. Reset spring; 5. Circuit board; 51. Marking slot; 6. Basket; 7. Marking fixture; 71. Marking bar hole. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-9 This application is described in further detail.

[0052] The embodiment of the present application discloses a number collection device for circuit board electroplating.

[0053] Reference Figure 1 , Figure 2 A number collection device for circuit board electroplating includes a manipulator 1, a measuring board 2, a data collection module 3, and a data analysis module 4. The manipulator 1 is fixedly connected to the measuring board 2, drives the measuring board 2 to move, and aligns the measuring board 2 with a reference surface on a basket 6. The measuring board 2 is provided with scale lines. The scale lines in this embodiment include 0, 1, 2, 3 in the hundreds area, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 in the tens area, and 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 in the units area, and the corresponding maximum number is 399.

[0054] Reference Figure 1 , Figure 2In this embodiment, the data acquisition module 3 includes a basket acquisition component 31 and a circuit board acquisition component 32. The basket acquisition component 31 in this embodiment is a visual acquisition head 311. The visual acquisition head 311 faces the number position of the basket 6, captures the image of the object through a camera, and uses an image processing algorithm (such as OpenCV, deep learning model) to identify the number or number on the object. The visual acquisition head 311 collects the number data of the basket 6 and converts it into a digital signal and inputs it into the data analysis module 4. The data analysis module 4 compares and analyzes the two sets of number data. The data analysis module 4 includes a central processing unit. The central processing unit uses frequency domain analysis to convert the signal from the time domain to the frequency domain, analyzes the frequency component of the signal, and analyzes and compares the two number data. When the two number signals are the same, a "yes" instruction is output, and then the basket 6 connected to the circuit board 5 is moved to the qualified area. When the two signals are different, a "no" instruction is output, and the basket 6 connected to the circuit board 5 is moved to the problem area.

[0055] When detecting whether the numbers of the circuit board 5 and the basket 6 match, the manipulator 1 aligns the measuring plate 2 with the reference surface on the basket 6, and then collects the number of the basket 6 through the basket collection part 31, and the circuit board collection part 32 collects the number of the circuit board 5, and converts it into a digital signal and inputs it into the data analysis module 4. The data analysis module 4 compares and analyzes the two groups of label data, completes the matching analysis of the circuit board 5 and the replacement number, and uses automatic changing equipment instead of manual methods to improve the accuracy and convenience of matching and comparing the numbers of the circuit board 5 and the basket 6.

[0056] Reference Figure 3 , Figure 4 and Figure 5 The circuit board collection member 32 in this embodiment includes a barcode scanning member 321, a barcode assembly 322 and an adjusting rod 323. The measuring plate 2 is provided with a measuring surface 21 that is in contact with the circuit board 5. A collection cavity 23 is provided in the measuring plate 2. A sliding hole 22 that is connected to the collection cavity 23 is provided on the measuring surface 21. The sliding hole 22 corresponds to the digital scale line on the measuring plate 2 one by one. The adjusting rod 323 corresponds to the sliding hole 22 one by one and is slidably connected in the sliding hole 22. The end of the adjusting rod 323 extends out of the measuring plate 2. The barcode assembly 322 is provided in the measuring plate 2. 22 includes a black code plate 3221 and a plurality of white code plates 3222. The black code plate 3221 is fixedly arranged in the collection chamber 23 and divides the collection chamber 23 into two chambers. The white code plate 3222 is arranged in front of the black code plate 3221, with the direction of the side of the black code plate 3221 away from the adjustment hole as the positive direction. The white code plate 3222 can form white stripes on the black code plate 3221 to form a bar code structure. The bar code scanning part 321 is arranged at the end of the measuring plate 2 and is arranged toward the black code plate 3221 and the white code plate 3222.

[0057] The barcode scanner 321 has a light source inside, which is usually a laser diode or a light-emitting diode (LED). The light beam emitted by the light source is irradiated onto the barcode structure. The barcode structure is composed of black and white stripes, and stripes of different colors have different reflectivity to light. White stripes reflect stronger light, while black stripes reflect weaker light. When the light emitted by the light source is irradiated onto the barcode, different reflected light is generated according to the color of the stripes. The reflected light is received by the photoelectric sensor (such as a photodiode) inside the scanner. The photoelectric sensor converts the intensity change of the reflected light into an electrical signal. This enables the corresponding digital number to be scanned out of the barcode structure.

[0058] Reference Figure 6 , Figure 7 and Figure 8 The measuring plate 2 is provided with a clearance cavity 24 below the collecting cavity 23, and a clearance hole 25 communicating with the collecting cavity 23 is provided on the cavity wall of the clearance cavity 24. The clearance holes 25 correspond to the white code plates 3222 one by one, and the white code plates 3222 are slidably inserted in the clearance holes 25. Each adjusting rod 323 is connected to the white code plates 3222 through a control member 33.

[0059] Reference Figure 5 , Figure 8 In this embodiment, the control member 33 includes a resistance switch 331 and an electromagnet 332. The resistance switch 331 includes two electrodes arranged at intervals. Half of the adjusting rod 323 is made of insulating material, and the other half is made of conductive material. When the adjusting rod 323 contacts the resistance switch 331, the two electrodes are connected through the conductive material. The electromagnet 332 is arranged below the white code plate 3222. The two electrodes of the electromagnet 332 are connected to the resistance switch 331. When the two electrodes on the resistance switch 331 are connected, the electromagnet 332 is in a conductive state and absorbs the white code plate 3222 to move. A telescopic spring 333 connected to the adjusting rod 323 is provided on the measuring plate 2. Initially, the telescopic spring 333 applies an elastic force to the extension of the adjusting rod 323, so that the driving adjusting rod 323 extends out of the sliding hole 22 and disengages from the resistance switch 331.

[0060] Reference Figure 8 The white code plate 3222 is connected to the cavity wall of the yield cavity 24 via a return spring 334 , and the return spring 334 applies elastic force to the white code plate 3222 to slide onto the black code plate 3221 , pushing the white code plate 3222 to slide onto the black code plate 3221 .

[0061] When the measuring surface 21 is fitted with the circuit board 5, the adjusting rod 323 corresponding to the marking groove 51 remains stationary, and the other adjusting rods 323 are squeezed by the circuit board 5 and shrink in the sliding hole 22. The adjusting rod 323 is connected to the resistance switch 331, so that the electromagnet 332 is energized, and the electromagnet 332 absorbs and shrinks the white code plate 3222 into the clearance cavity 24. At this time, the telescopic spring 333 and the reset spring 334 are both in a compressed state. When the white code plate 3222 shrinks into the clearance cavity 24, the arrangement of the black and white stripes in the bar code structure composed of the white code plate 3222 and the black code plate 3221 changes. The bar code scanner 321 scans the corresponding digital number signal according to the different arrangements of the black and white stripes in the bar code structure, and inputs the signal into the data processing module.

[0062] When the measuring board 2 is separated from the circuit board 5, the telescopic spring 333 pushes the adjusting rod 323 to separate from the contact switch 331, and the electromagnet 332 is powered off. The reset spring 334 pushes the white code board 3222 to slide onto the black code board 3221, so that the measuring board 2 can collect the numbering data of the circuit board 5 next time. After the verification of one circuit board 5 in the basket 6 is completed, the manipulator 1 drives the measuring board 2 to move down and verify another circuit board 5, and repeats this process to complete the verification of the circuit boards 5 in the entire basket 6.

[0063] The implementation principle of the number collection device for circuit board electroplating in the embodiment of the present application is as follows: when detecting whether the numbers of the circuit board 5 and the basket 6 match, the basket 6 number is collected by the basket collection member 31. When the measuring surface 21 is in contact with the circuit board 5, the manipulator 1 aligns the measuring plate 2 with the reference surface on the basket 6, and the adjustment rod 323 corresponding to the marking groove 51 remains stationary. The other adjustment rods 323 are squeezed by the circuit board 5 and contracted in the sliding hole 22. The adjustment rods 323 are connected to the resistance switch 331, so that the circuit board 5 matches the number of the basket 6. When the magnet 332 is energized, the electromagnet 332 absorbs and retracts the white code plate 3222 into the clearance cavity 24. At this time, the telescopic spring 333 and the reset spring 334 are both in a compressed state. When the white code plate 3222 is retracted into the clearance cavity 24, the arrangement of the black and white stripes in the bar code structure composed of the white code plate 3222 and the black code plate 3221 changes. The bar code scanner 321 scans the corresponding digital number signal according to the different arrangement of the black and white stripes in the bar code structure, and inputs the signal to the data processing module. The data analysis module 4 compares and analyzes the two sets of label data, completes the matching analysis of the circuit board 5 and the replacement number, and uses automatic changing equipment instead of manual methods to improve the accuracy and convenience of matching and comparing the circuit board 5 and the basket 6 numbers.

[0064] The embodiment of the present application discloses a number marking method for circuit board electroplating.

[0065] A method for marking numbers for electroplating a circuit board comprises the following steps:

[0066] S1. Place the circuit boards 5 neatly in the basket 6 so that both ends of each circuit board 5 are aligned. When stacking the circuit boards 5, place an antistatic partition (such as an antistatic foam board or cardboard) between each circuit board 5 to reduce friction and collision. Ensure that the weight of each circuit board 5 is evenly distributed to avoid excessive pressure on the bottom circuit board 5.

[0067] S2, make a marking groove 51, refer to Fig. 9 , align the two ends of the marking fixture 7 with the reference plane on the basket 6, find the digital scale lines corresponding to the number of the basket 6 on the marking fixture 7, take the maximum number 399 as an example in this embodiment, the corresponding numbers in the hundreds area are 0, 1, 2, 3 digital scale lines, the corresponding tens area is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 digital scale lines, the corresponding units area is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 digital scale lines, the spacing between two adjacent digital areas is D, and D is selected as a scale spacing in this embodiment. The marking fixture 7 is used to distinguish different digital areas, so as to facilitate the reading of the number of the circuit board 5. The two digital areas are set to be separated by D to avoid the two digital areas being too close to each other, thereby improving the accuracy of the reading of the marking groove 51.

[0068] The marking fixture 7 is provided with a marking line hole 71 corresponding to each digital scale line. The marking line holes 71 are arranged parallel to each other. The length of the marking line hole 71 is greater than the height of the circuit board 5 stacked in the basket 6. The marking groove 51 is carved along the marking line hole 71 by the marking device. The marking device in this embodiment is an air grinder. The marking groove 51 is ground out by the air grinder, which has high processing efficiency, low equipment cost and simple maintenance. The air grinder is installed on the manipulator 1, and the manipulator 1 drives the air grinder to grind out the marking groove 51 on the side of the stacked circuit board 5. The manipulator 1 controls the path and force through programming, with small error and high precision, effectively avoiding the fluctuation of the groove depth / width caused by manual fatigue, and ensuring the consistency of mass production.

[0069] When the marking groove 51 is ground out by the air grinder, the air grinding head of the air grinder is tilted and the marking line is made along the edge of the engraved linear hole 71. The tilted air grinding head can better control the depth and width of the engraved line. By adjusting the tilt angle, the material can be removed more accurately, thereby achieving a more uniform engraving effect. The tilting of the air grinding head can disperse the cutting force and avoid the high stress concentration caused by the vertical contact between the grinding head and the workpiece surface. Engraving along the edge of the engraved linear hole 71 can ensure that the path of the engraved line is more stable and consistent.

[0070] When making the marking groove 51, the marking jig 7 is laid flat on one side of the stacked circuit board 5 and fits with the stacked circuit board 5, and then the marking line holes 71 corresponding to the numbers of the basket 6 are selected on the marking jig 7, and then the marking groove 51 is grinded out laterally on the circuit board 5 along the corresponding marking line holes 71 using an air grinder. The marking line holes 71 have a guiding effect on the marking line of the air grinder, so that the marking groove 51 can be more accurately drawn.

[0071] S3, surface cleaning, thoroughly cleaning the circuit board 5 to remove impurities such as oil, oxides, etc., mainly including:

[0072] 1. Cleaning and degreasing to remove surface contaminants: Use appropriate cleaning agents (such as alcohol, acetone, etc.) to remove oil, dust and other impurities on the surface of the circuit board 5; Solvent cleaning: Use organic solvents to dissolve the grease on the surface of the substrate; Alkaline cleaning: Use alkaline cleaning agents to remove grease through saponification and emulsification; Electrolytic degreasing: In the electrolytic cell, use electrochemical reactions to decompose and remove grease.

[0073] 2. Pickling and passivation, pickling treatment: use acidic solutions (such as sulfuric acid, hydrochloric acid, etc.) to remove surface oxides and rust to expose a clean metal surface; passivation treatment: after pickling, use chromate or phosphate solutions to form a stable oxide protective layer on the surface of the substrate to prevent the substrate from being oxidized again before electroplating.

[0074] 3. Activation treatment, immersion treatment: immerse the circuit board 5 in a specific solution to enhance its surface adhesion; Activation treatment: activate the surface of the circuit board 5 through a solution containing active metals (such as dilute acidic copper sulfate solution) to increase its adsorption to the electroplating solution.

[0075] 4. Micro-etching: Micro-etching is a process to remove tiny oxide layers and impurities on the surface, further cleaning the surface of the circuit board.

[0076] 5. Washing and drying: Washing: Use deionized water or pure water to thoroughly clean the circuit board 5 to remove residual detergent, acid or other impurities on the surface; Drying: Dry the cleaned circuit board 5 to ensure that there is no moisture remaining on the surface.

[0077] 6. Anti-oxidation treatment: After activation, the surface of the circuit board 5 is immersed in a solution containing an antioxidant (such as sodium sulfate solution) to prevent the surface from being oxidized during the electroplating process.

[0078] S4, electroplating, reducing the metal ions by electrolysis and depositing them on the circuit board 5 to form a conductive layer, the conductive layer adheres to the groove wall of the marking groove 51, and forms a groove structure in the marking groove 51.

[0079] S5, post-processing, the electroplated circuit board 5 is subjected to cleaning, drying, annealing and other treatments.

[0080] S6, inspection of returned goods. The number of the basket 6 is collected through the basket collection part 31. When the measuring surface 21 is fitted with the circuit board 5, the manipulator 1 aligns the measuring board 2 with the reference surface on the basket 6. The adjusting rod 323 corresponding to the marking groove 51 remains stationary. The other adjusting rods 323 are squeezed by the circuit board 5 and shrink in the sliding hole 22. The adjusting rod 323 is connected to the resistance switch 331, so that the electromagnet 332 is energized. The electromagnet 332 absorbs and shrinks the white code plate 3222 into the clearance cavity 24. At this time, the telescopic spring 333 and the reset spring 334 are both in a compressed state. When the white code plate 3222 shrinks into the clearance cavity 24, the arrangement of the black and white stripes in the bar code structure composed of the white code plate 3222 and the black code plate 3221 changes. The bar code scanning part 321 scans the corresponding digital number signal according to the different arrangements of the black and white stripes in the bar code structure, and inputs the signal into the data processing module. The data analysis module 4 compares and analyzes the two sets of label data. When the number of the basket 6 matches the number of the circuit board 5, the circuit board 5 is placed in the qualified area. When the number of the basket 6 does not match the number of the circuit board 5, the circuit board 5 is placed in the problem area.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for marking numbers for electroplating circuit boards, characterized in that: The steps include: S1, neatly placing the circuit boards (5) in a stacked and neat manner in a basket (6) so that both ends of each circuit board (5) are aligned; S2, making a marking groove (51), aligning the two ends of the marking fixture (7) with digital scales with the reference surface on the basket (6), finding the digital scale lines corresponding to the number of the basket (6) on the marking fixture (7), and then using the marking device to carve the marking groove (51) at the corresponding digital scale lines, and the marking groove (51) extends to each circuit board (5); S3, surface cleaning, thoroughly cleaning the circuit board (5) to remove oil stains and oxide impurities; S4, electroplating, reducing the metal ions by electrolysis and depositing them on the circuit board (5) to form a conductive layer, the conductive layer being attached to the groove wall of the marking groove (51) and forming a groove structure in the marking groove (51); S5, post-processing, cleaning, drying and annealing the electroplated circuit board (5); S6, inspection of returned goods, aligning the two ends of the number collecting device with the reference surface on the basket (6) of the electroplated circuit board (5), and then reading the number corresponding to the circuit board (5) according to the number on the marking fixture (7) corresponding to each marking groove (51), and then comparing it with the number on the basket (6). If there is no error, the circuit board (5) is placed in the qualified area, and if there is an error, the circuit board (5) is placed in the problem area.

2. The method for marking circuit board electroplating numbers according to claim 1, characterized in that: In step S2, the marking side of the engraving jig (7) is divided into digit areas of ones, tens, hundreds, ..., each digit area is engraved with 0, 1, 2, ... digit scale lines equidistantly along the same direction, and the distance between two adjacent digit areas is D.

3. The method for numbering and marking circuit board electroplating according to claim 2, characterized in that: The marking device is an air grinder, and the marking groove (51) is ground out on the side of the circuit board (5) by the air grinder.

4. The method for numbering and marking circuit board electroplating according to claim 3, characterized in that: The engraved line fixture (7) is provided with engraved line holes (71) corresponding to each digital scale line, the engraved line holes (71) are arranged parallel to each other, and the length of the engraved line holes (71) is greater than the height of the circuit board (5) stacked in the basket (6); When making the marking groove (51), the marking jig (7) is laid flat on one side of the stacked circuit boards (5) and is fitted with the stacked circuit boards (5). Then, a digital scale line corresponding to the number of the basket (6) is selected on the marking jig (7), and then an air grinder is used to grind the marking groove (51) on the side of the circuit board (5) along the corresponding digital scale line along the marking line hole (71).

5. The method for marking circuit board electroplating numbers according to claim 4, characterized in that: When the marking groove (51) is ground out by the air grinder, the air grinding head of the air grinder is tilted and the marking line is made along the edge of the marking linear hole (71).

6. A circuit board electroplating number collection device, using the circuit board electroplating number marking method according to any one of claims 1 to 5, characterized in that: The invention comprises a manipulator (1), a measuring board (2), a data acquisition module (3), and a data analysis module (4); the manipulator (1) is connected to the measuring board (2) so as to align the measuring board (2) with a reference surface on a basket (6); the data acquisition module (3) is capable of acquiring a digital number on the measuring board (2) corresponding to a marking groove (51), and acquiring the number of the basket (6), and transmitting the two sets of number data to the data analysis module (4); the data analysis module (4) performs comparative analysis on the two sets of number data.

7. A circuit board electroplating number collection device according to claim 6, characterized in that: The data acquisition module (3) comprises a basket acquisition component (31) and a circuit board acquisition component (32); the basket acquisition component (31) is capable of acquiring the number data of the basket (6), and the circuit board acquisition component (32) is capable of acquiring the number data of the circuit board (5).

8. A circuit board electroplating number collection device according to claim 7, characterized in that: The measuring plate (2) is provided with a measuring surface (21) which is in contact with the circuit board (5); a collecting cavity (23) is provided in the measuring plate (2); a sliding hole (22) which is connected to the collecting cavity (23) is provided on the measuring surface (21); the sliding hole (22) corresponds one-to-one with the digital scale lines on the measuring plate (2); The circuit board collection component (32) comprises a barcode scanning component (321), a barcode assembly (322) and an adjusting rod (323); the adjusting rod (323) corresponds to the sliding hole (22) one by one and is slidably connected in the sliding hole (22); the barcode assembly (322) comprises a black code plate (3221) and a plurality of white code plates (3222); the black code plate (3221) is arranged in the collection cavity (23); the white code plate (3222) is arranged in front of the black code plate (3221); the white code plate (3222) can form white stripes on the black code plate (3221) to form a barcode structure; the barcode scanning component (321) is arranged on the measuring board (2) and can scan and identify the barcode structure and generate a corresponding digital number; the adjusting rod (323) is connected to the white code plate (3222); The end of the adjusting rod (323) can extend out of the sliding hole (22); when the measuring surface (21) is in contact with the circuit board (5), the adjusting rod (323) corresponding to the marking groove (51) remains stationary, and the remaining adjusting rods (323) are squeezed by the circuit board (5) and contracted in the sliding hole (22), so as to control the white code plate (3222) to move away from the black code plate (3221).

9. A circuit board electroplating number collection device according to claim 8, characterized in that: The measuring plate (2) is provided with a clearance cavity (24) below the collecting cavity (23); a clearance hole (25) is provided on the cavity wall of the clearance cavity (24) and is communicated with the collecting cavity (23); the clearance holes (25) correspond to the white code plates (3222) one by one; the white code plates (3222) are slidably inserted in the clearance holes (25); each of the adjusting rods (323) is connected to the white code plates (3222) via a control member (33); the control member (33) can guide the white code plates (3222) to retract into the clearance cavity (24) so ​​as to change the bar code structure.

10. A circuit board electroplating number collection device according to claim 9, characterized in that: The control member (33) comprises a contact switch (331) and an electromagnet (332); the electromagnet (332) is arranged below the white code plate (3222) so as to absorb the white code plate (3222) and move it; the contact switch (331) is opposite to the adjustment rod (323) so as to make the adjustment rod (323) contact the contact switch (331) so that the contact switch (331) is in a conducting state; a telescopic spring (333) connected to the adjustment rod (323) is provided on the measuring plate (2); the telescopic spring (333) can drive the adjustment rod (323) to extend out of the sliding hole (22) and to be separated from the contact switch (331); The white code plate (3222) is connected to the cavity wall of the give-way cavity (24) via a return spring (334), and the return spring (334) can push the white code plate (3222) to slide onto the black code plate (3221).

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