A detection device and method for detecting surface defects of a circuit layer on a high-frequency circuit board

Abstract

The application discloses a kind of detection device and method for detecting surface defects of high-frequency circuit board line layer, and the application relates to the technical field of detecting surface defects of high-frequency circuit board line layer, it includes fixedly arranged on the stand plate, fixedly arranged on the lower pressing cylinder of stand plate top, the left end surface of stand plate is sequentially provided with multiple push and detection components for positioning high-frequency circuit board, for gradually pushing high-frequency circuit board through detection station, for the classification of unqualified products or qualified products from top to bottom;Vertical cylinder and CCD lens are fixedly arranged on the top wall of connecting frame, the acting end of lower pressing cylinder piston rod is fixedly arranged with lifting plate, which sequentially penetrates the platform of each push and detection component downwards, the left end of the bar is fixedly arranged with pressure roller, and the top surface of pressure plate is contacted with pressure roller.The beneficial effects of the application are: greatly improve the efficiency of detecting surface defects of high-frequency circuit board line layer, and the detection precision is high.

Description

Technical Field

[0001] This invention relates to the technical field of detecting surface defects in the circuit layers of high-frequency circuit boards, and in particular to a detection device and method for detecting surface defects in the circuit layers of high-frequency circuit boards. Background Technology

[0002] High-frequency circuit boards have the following characteristics: 1. High transmission efficiency: Thanks to their low dielectric constant and superior material properties, high-frequency circuit boards consume less power than other circuit boards. 2. High operating speed: Transmission speed is inversely proportional to the square root of the dielectric constant. High-frequency circuit boards use special materials to ensure a low dielectric constant, thereby enabling faster signal transmission and relatively stable circuit board operation.

[0003] The structure of high-frequency circuit board 1 produced in a certain workshop is as follows: Figures 1-2 As shown, the high-frequency circuit board 1 includes a rectangular circuit board body. A strip-shaped circuit layer 2 is formed on the top surface of the circuit board body along its length. The circuit layer 2 is formed by an etching process. Since the etching parameters [including etching solution concentration, etching time, etc.] in the etching process cannot be precisely controlled, after etching, some high-frequency circuit boards 1 have pits or spots on the top surface of the circuit layer 2 (while the process requires that the top surface of the etched circuit layer 2 has no pits or spots). Therefore, a detection device is used in the workshop to perform surface detection on the circuit layer 2 of each high-frequency circuit board 1 to remove unqualified high-frequency circuit boards and place qualified high-frequency circuit boards on the finished product frame.

[0004] The structure of the testing device used in a certain workshop is as follows: Figure 3 As shown, it includes a machine base 3, a bracket 4 fixed on the top surface of the machine base 3, and a feed cylinder 5. A vertically arranged CCD lens 6 is fixed on the top wall of the bracket 4, and the CCD lens 6 is connected to the controller via a signal line. A positioning seat 7 is fixed on the working end of the piston rod of the feed cylinder 5. A positioning groove 8 is opened on the top surface of the positioning seat 7, and the positioning groove 8 matches the outer contour of the circuit board body of the high-frequency circuit board 1.

[0005] The method by which workers use this testing device to inspect surface defects on the circuit layer 2 of multiple high-frequency circuit boards 1 is as follows:

[0006] Sa, the worker took out a... Figures 1-2 The high-frequency circuit board 1 to be tested is placed from top to bottom into the positioning groove 8 of the positioning seat 7, as shown. Figure 4 As shown, at this time, the left end of the circuit layer 2 on the high-frequency circuit board 1 is just below the CCD lens 6.

[0007] Sb, the piston rod of the control feed cylinder 5 extends to the left, the piston rod drives the positioning seat 7 to move to the left, the positioning seat 7 drives the high-frequency circuit board 1 to move to the left, and the high-frequency circuit board 1 drives the circuit layer 2 on it to move to the left synchronously. As the circuit layer 2 gradually passes through the CCD lens 6 to the left, the CCD lens 6 detects whether there are defects on the surface of the circuit layer 2 below it. When the circuit layer 2 has completely passed through the CCD lens 6, such as Figure 5 As shown, the worker tilts his head to check whether the controller's display shows N or Y;

[0008] If the worker sees N displayed on the controller's screen, it means that the controller has received a non-compliant electrical signal from the CCD lens 6. In this case, the worker determines that the high-frequency circuit board 1 is a non-compliant product. If the worker sees Y displayed on the controller's screen, it means that the controller has received a compliant electrical signal from the CCD lens 6. In this case, the worker determines that the high-frequency circuit board 1 is a compliant product.

[0009] Sc. The worker removes the defective or qualified products from the positioning seat 7, thus completing the inspection of surface defects on the circuit layer 2 of a high-frequency circuit board 1.

[0010] By repeating steps Sa~Sc multiple times, workers can complete the inspection of all high-frequency circuit boards 1 in the workshop.

[0011] I. In the operation of steps Sa to Sc, the positioning seat 7 can only accommodate one high-frequency circuit board 1. Therefore, surface defect detection can only be performed on the circuit layer 2 of one high-frequency circuit board 1. That is to say, it can only be detected one after another. However, the number of high-frequency circuit boards 1 to be detected in the workshop every day is as high as 120 to 130, which makes it take a long time to detect all the high-frequency circuit boards 1 in the workshop, thereby reducing the efficiency of detecting surface defects on the circuit layer of the circuit board.

[0012] II. In step Sb, after the circuit layer 2 on the high-frequency circuit board 1 has completely passed through the CCD lens 6, the worker still needs to check whether the display screen on the controller shows N or Y before they can determine whether the high-frequency circuit board 1 being inspected is a defective or qualified product. This undoubtedly adds an extra step of checking the display screen, which further reduces the efficiency of detecting surface defects on the circuit layer of the high-frequency circuit board. Furthermore, sometimes workers may mistakenly see N as Y, leading them to classify defective products as qualified and place them on the finished product frame. Therefore, this inspection device suffers from a technical defect of low inspection accuracy.

[0013] Therefore, there is an urgent need for a detection device and method for detecting surface defects of circuit layers on high-frequency circuit boards that can greatly improve the efficiency and accuracy of detecting such defects. Summary of the Invention

[0014] The purpose of this invention is to overcome the shortcomings of the prior art and provide a detection device and method for detecting surface defects of circuit layers on high-frequency circuit boards.

[0015] The objective of this invention is achieved through the following technical solution: a detection device for detecting surface defects of circuit layers on a high-frequency circuit board, comprising a vertical plate fixed on a pad, a pressing cylinder fixed on the top of the vertical plate, and a plurality of pushing and detection components arranged sequentially from top to bottom on the left end face of the vertical plate for positioning the high-frequency circuit board, for pushing the high-frequency circuit board gradually through the detection station, and for classifying defective or qualified products.

[0016] The top-level pushing and detection component includes a platform fixed to the left end face of the upright plate. On the top surface of the platform, from right to left, a first support, a second support, a horizontal guide rail, and a connecting frame are sequentially fixed. On the front end face of the second support, a right-inclined pushing plate is hinged to the pin shaft. A roller is hinged to the lower end of the pushing plate. A pressure plate extending directly above the first support is fixed to the upper end of the pushing plate. An arc-shaped guide rail penetrating the upper end of the pushing plate is fixed to the right end face of the first support. The center line of the arc-shaped guide rail is coaxial with the pin shaft. A spring A is sleeved on the arc-shaped guide rail. The two ends of the spring A are respectively fixed to the first support and the pushing plate.

[0017] A horizontally sliding slide is slidably mounted on the horizontal guide rail. An L-plate is fixed on the right end face of the slide. A hinge seat and a support column are fixed on the top surface of the slide. A connecting plate is hinged to the hinge seat. A rotating seat is fixed on the right end of the connecting plate. The rotating seat is supported on the top surface of the support column. A positioning stop for positioning the high-frequency circuit board is opened on the top surface of the rotating seat.

[0018] A vertical cylinder and a CCD lens are fixed on the top wall of the connecting frame. The piston rod of the vertical cylinder passes through the top wall of the connecting frame downwards, and a nylon block is fixed on the extended end. The CCD lens is vertically arranged and located directly above the left end of the rotating seat. A spring B is fixed between the side wall of the connecting frame and the left end face of the slide table. Under the elastic force of the spring B, the vertical plate of the L plate abuts against the roller.

[0019] The piston rod of the lower cylinder is fixed with a lifting plate that passes through the platform of each pushing and detection component in sequence downwards. Each pushing and detection component is provided with a rod fixed on the lifting plate directly above it. The left end of the rod is fixed with a pressure roller, which is in contact with the top surface of the pressure plate.

[0020] An arc-shaped guide groove is provided in the upper end of the push plate, and the arc-shaped guide rail inside the push plate slides in cooperation with the arc-shaped guide rail.

[0021] The longitudinal width of the positioning stop is equal to the longitudinal width of the circuit board body of the high-frequency circuit board, and the horizontal width of the positioning stop is greater than the horizontal width of the high-frequency circuit board.

[0022] A fixing plate is fixed on the left side wall of the slide, and the spring B is fixed between the fixing plate and the side wall of the connecting frame.

[0023] Two sliders are slidably mounted on the horizontal guide rail, and the slide table is fixed between the two sliders.

[0024] The platform has through slots, and the lifting plate passes through the through slots of each platform.

[0025] The upright plate is equipped with three pushing and detection components, all of which have the same structure.

[0026] The detection device also includes a controller, which is electrically connected to the pressure cylinder, the vertical cylinder, and the CCD lens via signal lines.

[0027] A method for detecting surface defects in the circuit layer of a high-frequency circuit board includes the following steps:

[0028] S1. The worker takes out three high-frequency circuit boards to be tested and places them into the positioning stops of the rotating seats of the three pushing and testing components. Since the longitudinal width of the positioning stop is equal to the longitudinal width of the circuit board body of the high-frequency circuit board, the positioning of the high-frequency circuit board is achieved. At this time, the left end of the circuit layer on the high-frequency circuit board is below the CCD lens.

[0029] S2. The piston rod of the control cylinder extends downward, which drives the lifting plate to move downward. The lifting plate drives the three rods to move downward, and the rods drive the pressure roller to move downward. The pressure roller presses down on the pressure plate, and the pressure plate drives the push plate to rotate clockwise around the pin shaft. The push plate compresses spring A. At the same time, the roller of the push plate pushes plate L to move to the left. Plate L drives the slide table to move to the left along the horizontal guide rail. The slide table compresses spring B to the left. At the same time, the slide table also drives the hinge seat, support column, connecting plate and rotating seat to move to the left synchronously. The rotating seat drives the high-frequency circuit board inside to move to the left synchronously. The high-frequency circuit board drives the circuit layer on it to move to the left synchronously.

[0030] As the circuit layer gradually passes through the CCD lens to the left, the CCD lens detects in real time whether there are any defects on the surface of the circuit layer below it. When the piston rod of the pressure cylinder is fully extended, the circuit layer just passes through the CCD lens completely. At this time, the pressure roller stops pressing down on the push plate, the push plate stops rotating, and the connecting plate is just below the nylon block. At the same time, the CCD lens transmits the unqualified or qualified electrical signal to the controller.

[0031] S3. The controller controls the vertical cylinder corresponding to the CCD lens that emits a non-conforming electrical signal to extend downwards. The piston rod drives the nylon block to move downwards, and the nylon block applies pressure to the connecting plate. The connecting plate rotates counterclockwise around the hinge seat, and the connecting plate drives the rotating seat to rotate synchronously. The rotating seat drives the non-conforming product inside to rotate synchronously. When the piston rod of the vertical cylinder is fully extended, both the non-conforming product and the rotating seat are in an inclined state. The worker removes the non-conforming product in the inclined state from the rotating seat and discards it. Then, the worker removes the qualified product in the horizontal state from the rotating seat and places the qualified product on the finished product frame, thus finally realizing the one-time detection of surface defects on the circuit layers of three high-frequency circuit boards.

[0032] S4. After the three high-frequency circuit boards have been inspected, the worker controls the piston rod of the pressing cylinder to retract upwards. The piston rod drives the lifting plate to move upwards, the lifting plate drives the rod to move upwards, and the rod drives the pressure roller to move upwards. During the upward movement, the push plate rotates counterclockwise around the pin shaft under the elastic restoring force of spring A. At the same time, the slide table moves to the right along the horizontal guide rail under the elastic restoring force of spring B, and the slide table drives the rotating seat to move to the right. After the piston rod of the pressing cylinder is fully retracted, the push plate and the slide table move to their initial state.

[0033] S5. Workers can repeat steps S1 to S4 multiple times to complete the inspection of all high-frequency circuit boards 1 in the workshop.

[0034] This invention has the following advantages: it greatly improves the efficiency of detecting surface defects in the circuit layer of high-frequency circuit boards and has high detection accuracy. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a high-frequency circuit board.

[0036] Figure 2 for Figure 1 Top view;

[0037] Figure 3 This is a schematic diagram of the testing equipment used in the workshop.

[0038] Figure 4 This is a schematic diagram of placing the circuit board body of a high-frequency circuit board into the positioning slot of the positioning seat from top to bottom.

[0039] Figure 5 A schematic diagram showing the entire circuit layer through the CCD lens;

[0040] Figure 6 This is a schematic diagram of the structure of the present invention;

[0041] Figure 7 for Figure 6 Main section diagram;

[0042] Figure 8 This is a structural diagram of the push and detection components;

[0043] Figure 9 for Figure 8 A schematic diagram showing the connection of the horizontal guide rail, slide table, connecting plate, rotating seat, and L-plate.

[0044] Figure 10 of Figure 9 A bottom view;

[0045] Figure 11 for Figure 9 A schematic diagram of the partial cross-section;

[0046] Figure 12 for Figure 8 A schematic diagram showing the connection between the rotating seat and the connecting plate in the diagram;

[0047] Figure 13 for Figure 12 Main section diagram;

[0048] Figure 14 This is a schematic diagram showing the connection between the first support, the second support, the arc-shaped guide rail, the push plate, and the roller;

[0049] Figure 15 for Figure 14 A schematic diagram of the partial cross-section;

[0050] Figure 16 This is a schematic diagram showing the connection between the pressure cylinder, the lifting plate, and the pressure roller.

[0051] Figure 17 for Figure 16 The main view;

[0052] Figure 18 This is a schematic diagram showing how three high-frequency circuit boards are placed into the positioning stops of the rotating seats of the three pushing and detection components.

[0053] Figure 19 for Figure 18 Enlarged view of part C;

[0054] Figure 20 This is a schematic diagram showing the circuit layer passing exactly through the CCD lens.

[0055] Figure 21 for Figure 20 Enlarged view of part D;

[0056] Figure 22 This is a schematic diagram showing that both the defective product and the rotating seat are tilted.

[0057] In the picture:

[0058] 1-High-frequency circuit board, 2-Circuit layer, 3-Machine base, 4-Bracket, 5-Feed cylinder, 6-CCD lens, 7-Positioning seat, 8-Positioning slot;

[0059] 9-Plate, 10-Upright plate, 11-Pressing cylinder, 12-Pushing and detection assembly, 13-Platform, 14-First support, 15-Second support, 16-Horizontal guide rail, 17-Connecting frame; 18-Pin, 19-Push plate, 20-Roller, 21-Pressure plate, 22-Arc-shaped guide rail, 23-Spring A;

[0060] 24-Slide table, 25-L-plate, 26-Support column, 27-Connecting plate, 28-Rotating seat, 29-Positioning stop;

[0061] 30-Vertical cylinder, 31-Nylon block, 32-Spring B, 33-Lifting plate, 34-Rod, 35-Pressure roller, 36-Slider. Detailed Implementation

[0062] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0063] like Figures 6-17 As shown, a detection device for detecting surface defects of circuit layers on a high-frequency circuit board includes a vertical plate 10 fixed on a pad 9 and a pressing cylinder 11 fixed on the top of the vertical plate 10. Multiple pushing and detection components 12 are arranged sequentially from top to bottom on the left end face of the vertical plate 10 for positioning the high-frequency circuit board 1, pushing the high-frequency circuit board 1 through the detection station, and classifying defective or qualified products. Three pushing and detection components 12 are arranged on the vertical plate 10, and the three pushing and detection components 12 have the same structure.

[0064] The topmost pushing and detection component 12 includes a platform 13 fixed to the left end face of the upright plate 10. The top surface of the platform 13 is sequentially fixed from right to left with a first support 14, a second support 15, a horizontal guide rail 16, and a connecting frame 17. The front end face of the second support 15 is hinged to a right-inclined pushing plate 19 via a pin 18. The lower end of the pushing plate 19 is hinged to a roller 20. The upper end of the pushing plate 19 is fixed with a pressure plate 21 extending directly above the first support 14. The right end face of the first support 14 is fixed with an arc-shaped guide rail 22 that penetrates the upper end of the pushing plate 19. The center line of the arc-shaped guide rail 22 is coaxial with the pin 18. A spring A23 is sleeved on the arc-shaped guide rail 22. The two ends of the spring A23 are respectively fixed to the first support 14 and the pushing plate 19.

[0065] A horizontally slidable slide table 24 is slidably mounted on the horizontal guide rail 16. Two sliders 36 are slidably mounted on the horizontal guide rail 16, and the slide table 24 is fixed between the two sliders 36. An L-plate 25 is fixedly mounted on the right end face of the slide table 24. A hinge seat and a support column 26 are fixedly mounted on the top surface of the slide table 24. A connecting plate 27 is hinged to the hinge seat. A rotating seat 28 is fixedly mounted on the right end of the connecting plate 27. The rotating seat 28 is supported on the top surface of the support column 26, and a positioning stop 29 for positioning the high-frequency circuit board 1 is provided on the top surface of the rotating seat 28. The longitudinal width of the positioning stop 29 is equal to the longitudinal width of the circuit board body of the high-frequency circuit board 1, and the horizontal width of the positioning stop 29 is greater than the horizontal width of the high-frequency circuit board 1.

[0066] A vertical cylinder 30 and a CCD lens 6 are fixedly mounted on the top wall of the connecting frame 17. The piston rod of the vertical cylinder 30 extends downward through the top wall of the connecting frame 17, and a nylon block 31 is fixedly mounted on the extended end. The CCD lens 6 is vertically positioned and located directly above the left end of the rotating seat 28. A spring B32 is fixed between the side wall of the connecting frame 17 and the left end face of the slide table 24. Under the elastic force of the spring B32, the vertical plate of the L plate 25 abuts against the roller 20. A fixing plate is fixed on the left side wall of the slide table 24, and the spring B32 is fixed between the fixing plate and the side wall of the connecting frame 17.

[0067] The piston rod of the lowering cylinder 11 is fixed with a lifting plate 33 that passes through the platform 13 of each pushing and detection component 12 in sequence downwards. Each pushing and detection component 12 is provided with a rod 34 fixed on the lifting plate 33 directly above it. The left end of the rod 34 is fixed with a pressure roller 35, which is in contact with the top surface of the pressure plate 21.

[0068] An arc-shaped guide groove is provided in the upper end of the push plate 19, and an arc-shaped guide rail 22 is slidably engaged with the push plate 19. A through groove is provided in the platform 13, and the lifting plate 33 is provided through the through groove of each platform 13.

[0069] The detection device also includes a controller, which is electrically connected to the pressing cylinder 11, the vertical cylinder 30 and the CCD lens 6 via signal lines. The operator can control the extension or retraction of the piston rods of the pressing cylinder 11 and the vertical cylinder 30 through the controller. The CCD lens 6 can determine whether there are surface defects on the surface of the circuit layer 2 on the high-frequency circuit board 1. It has the characteristics of high automation.

[0070] A method for detecting surface defects in the circuit layer of a high-frequency circuit board includes the following steps:

[0071] S1, the worker took out three such... Figures 1-2 The high-frequency circuit board 1 to be tested is shown. The three high-frequency circuit boards 1 are respectively placed into the positioning stops 29 of the rotating seats 28 of the three pushing and testing components 12, as shown. Figures 18-19 As shown, since the longitudinal width of the positioning stop 29 is equal to the longitudinal width of the circuit board body of the high-frequency circuit board 1, the positioning of the high-frequency circuit board 1 is achieved. At this time, the left end of the circuit layer 2 on the high-frequency circuit board 1 is below the CCD lens 6.

[0072] S2. The piston rod of the control cylinder 11 extends downward, and the piston rod drives the lifting plate 33 to move downward. The lifting plate 33 drives the three rods 34 to move downward. The rods 34 drive the pressure roller 35 to move downward. The pressure roller 35 presses down on the pressure plate 21. The pressure plate 21 drives the push plate 19 to rotate clockwise around the pin 18. The push plate 19 compresses the spring A23. At the same time, the roller 20 of the push plate 19 pushes the L plate 25 to move to the left. The L plate 25 drives the slide table 24 to move to the left along the horizontal guide rail 16. The slide table 24 compresses the spring B32 to the left. At the same time, the slide table 24 also drives the hinge seat, support column 26, connecting plate 27 and rotating seat 28 to move to the left synchronously. The rotating seat 28 drives the high-frequency circuit board 1 inside to move to the left synchronously. The high-frequency circuit board 1 drives the circuit layer 2 on it to move to the left synchronously.

[0073] As the circuit layer 2 gradually passes through the CCD lens 6 to the left, the CCD lens 6 continuously monitors the surface of the circuit layer 2 beneath it for defects. When the piston rod of the lower cylinder 11 is fully extended, the circuit layer 2 has just completely passed through the CCD lens 6. Figures 20-21 As shown, at this time, the pressure roller 35 no longer presses down on the push plate 19, the push plate 19 no longer rotates, the connecting plate 27 is just below the nylon block 31, and at the same time, the CCD lens 6 transmits the unqualified or qualified electrical signal to the controller.

[0074] S3. The controller controls the vertical cylinder 30 corresponding to the CCD lens 6 that emits a non-conforming electrical signal to extend downwards. The piston rod drives the nylon block 31 to move downwards, and the nylon block 31 applies pressure to the connecting plate 27. The connecting plate 27 rotates counterclockwise around the hinge seat, and the connecting plate 27 drives the rotating seat 28 to rotate synchronously. The rotating seat 28 drives the non-conforming product inside to rotate synchronously. When the piston rod of the vertical cylinder 30 is fully extended, both the non-conforming product and the rotating seat 28 are in an inclined state. Figure 22 As shown, the worker removes the defective product, which is tilted, from the rotating seat 28 and discards it. The direction in which the defective product is removed is as follows: Figure 22 As indicated by the hollow arrow; then the worker removes the horizontally positioned qualified product from the rotating seat 28 and places it on the finished product frame. The direction in which the qualified product is removed is as follows. Figure 22 As shown by the middle arrow, this ultimately enabled the simultaneous detection of surface defects on the circuit layer 2 of three high-frequency circuit boards 1.

[0075] In steps S2-S3, after the CCD lens 6 transmits the non-conforming or conforming electrical signal to the controller—that is, after the CCD lens 6 transmits the detection result of the surface defect of the circuit layer 2 to the controller—the controller only controls the piston rod of the vertical cylinder 30 corresponding to the non-conforming product to extend downwards, so that both the rotating seat 28 and the non-conforming product are in an inclined state. Subsequently, the worker only needs to remove the non-conforming product in the inclined state and place the conforming product in the horizontal state onto the finished product frame, thus achieving rapid classification of the non-conforming and conforming products after inspection. Therefore, this detection device, compared to... Figures 3-5 The detection method shown eliminates the need for workers to check whether the display shows N or Y, making it easier for them to distinguish between defective and qualified products more intuitively. This simplifies the detection process and greatly improves the efficiency of detecting surface defects on the circuit layer of the circuit board.

[0076] In addition, compared to workers looking at the N or Y displayed on the screen, this testing device effectively avoids workers mistaking N for Y, thereby greatly improving the testing accuracy of high-frequency circuit boards.

[0077] S4. After the three high-frequency circuit boards 1 are inspected, the worker controls the piston rod of the pressing cylinder 11 to retract upwards. The piston rod drives the lifting plate 33 to move upwards, the lifting plate 33 drives the rod 34 to move upwards, and the rod 34 drives the pressure roller 35 to move upwards. During the upward movement, the push plate 19 rotates counterclockwise around the pin 18 under the elastic restoring force of the spring A23. At the same time, the slide table 24 moves to the right along the horizontal guide rail 16 under the elastic restoring force of the spring B32. The slide table 24 drives the rotating seat 28 to move to the right. After the piston rod of the pressing cylinder 11 is fully retracted, the push plate 19 and the slide table 24 both move to their initial state.

[0078] S5. Workers can repeat steps S1 to S4 multiple times to complete the inspection of all high-frequency circuit boards 1 in the workshop.

[0079] As can be seen from steps S1 to S3, this detection device first positions the high-frequency circuit board 1 to be tested using the positioning stops 29 of the three rotating seats 28. Then, it controls the piston rod of the pressing cylinder 11 to extend downwards, allowing the circuit layers 2 on the three high-frequency circuit boards 1 to gradually pass through the corresponding CCD lenses 6, thus completing the detection of surface defects on the circuit layers 2. Therefore, this detection device only requires the coordinated operation of one pressing cylinder 11 and three pushing and detection components 12 to complete the detection of surface defects on the circuit layers 2 of three high-frequency circuit boards 1 in one go, eliminating the need for workers to inspect the high-frequency circuit boards 1 one by one. This allows all high-frequency circuit boards 1 in the workshop to be inspected in a short time, further greatly improving the efficiency of detecting surface defects on the circuit layers of circuit boards.

[0080] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 invention should be included within the protection scope of the present invention.

Claims

1. A detection device for detecting surface defects in circuit layers on high-frequency circuit boards, characterized in that: It includes a vertical plate (10) fixed on the pad (9), a downward pressure cylinder (11) fixed on the top of the vertical plate (10), and multiple push and detection components (12) arranged sequentially from top to bottom on the left end face of the vertical plate (10) for positioning the high frequency circuit board (1), for pushing the high frequency circuit board (1) through the detection station, and for classifying non-conforming or conforming products. The topmost pushing and detection component (12) includes a platform (13) fixed to the left end face of the upright plate (10). On the top surface of the platform (13), a first support (14), a second support (15), a horizontal guide rail (16), and a connecting frame (17) are fixed sequentially from right to left. A right-inclined pushing plate (19) is hinged to the front end face of the second support (15) via a pin shaft (18). A roller (20) is hinged to the lower end of the pushing plate (19). The upper end of the push plate (19) is fixed with a pressure plate (21) extending directly above the first support (14). The right end face of the first support (14) is fixed with an arc-shaped guide rail (22) that passes through the upper end of the push plate (19). The center line of the arc-shaped guide rail (22) is coaxial with the pin (18). A spring A (23) is sleeved on the arc-shaped guide rail (22). The two ends of the spring A (23) are fixed on the first support (14) and the push plate (19) respectively. A horizontally sliding slide table (24) is slidably mounted on the horizontal guide rail (16). An L-plate (25) is fixed on the right end face of the slide table (24). A hinge seat and a support column (26) are fixed on the top surface of the slide table (24). A connecting plate (27) is hinged on the hinge seat. A rotating seat (28) is fixed on the right end of the connecting plate (27). The rotating seat (28) is supported on the top surface of the support column (26). A positioning stop (29) for positioning the high-frequency circuit board (1) is opened on the top surface of the rotating seat (28). A vertical cylinder (30) and a CCD lens (6) are fixed on the top wall of the connecting frame (17). The piston rod of the vertical cylinder (30) passes through the top wall of the connecting frame (17) downwards, and a nylon block (31) is fixed on the extended end. The CCD lens (6) is vertically arranged and located directly above the left end of the rotating seat (28). A spring B (32) is fixed between the side wall of the connecting frame (17) and the left end face of the slide (24). Under the elastic force of the spring B (32), the vertical plate of the L plate (25) abuts against the roller (20). The piston rod of the lower cylinder (11) is fixed with a lifting plate (33) that passes through the platform (13) of each pushing and detection component (12) in sequence downwards. Each pushing and detection component (12) is provided with a rod (34) fixed on the lifting plate (33) directly above it. The left end of the rod (34) is fixed with a pressure roller (35), which is in contact with the top surface of the pressure plate (21).

2. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 1, characterized in that: An arc-shaped guide groove is provided in the upper end of the push plate (19), and the arc-shaped guide rail (22) inside the push plate (19) slides in cooperation with the arc-shaped guide rail (22).

3. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 2, characterized in that: The longitudinal width of the positioning stop (29) is equal to the longitudinal width of the circuit board body of the high-frequency circuit board (1), and the horizontal width of the positioning stop (29) is greater than the horizontal width of the high-frequency circuit board (1).

4. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 3, characterized in that: A fixing plate is fixed on the left side wall of the slide (24), and the spring B (32) is fixed between the fixing plate and the side wall of the connecting frame (17).

5. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 4, characterized in that: Two sliders (36) are slidably mounted on the horizontal guide rail (16), and the slide table (24) is fixed between the two sliders (36).

6. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 5, characterized in that: The platform (13) has a through slot, and the lifting plate (33) passes through the through slot of each platform (13).

7. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 6, characterized in that: The upright plate (10) is provided with three push and detection components (12), and the three push and detection components (12) have the same structure.

8. The detection device for detecting surface defects of circuit layers on a high-frequency circuit board according to claim 7, characterized in that: The detection device also includes a controller, which is electrically connected to the pressure cylinder (11), the vertical cylinder (30) and the CCD lens (6) via signal lines.

9. A method for detecting surface defects in circuit layers on a high-frequency circuit board, employing the detection device for detecting surface defects in circuit layers on a high-frequency circuit board as described in claim 8, characterized in that: It includes the following steps: S1. The worker takes out three high-frequency circuit boards (1) to be tested and puts the three high-frequency circuit boards (1) into the positioning stop (29) of the rotating seat (28) of the three pushing and testing components (12). Since the longitudinal width of the positioning stop (29) is equal to the longitudinal width of the circuit board body of the high-frequency circuit board (1), the positioning of the high-frequency circuit board (1) is realized. At this time, the left end of the circuit layer (2) on the high-frequency circuit board (1) is below the CCD lens (6). S2. The piston rod of the control cylinder (11) extends downward, driving the lifting plate (33) to move downward. The lifting plate (33) drives the three rods (34) to move downward, and the rods (34) drive the pressure roller (35) to move downward. The pressure roller (35) presses down on the pressure plate (21), and the pressure plate (21) drives the push plate (19) to rotate clockwise around the pin (18). The push plate (19) compresses the spring A (23). At the same time, the roller (20) of the push plate (19) compresses the spring A (23). The L plate (25) is pushed to the left, and the L plate (25) drives the slide (24) to move to the left along the horizontal guide rail (16). The slide (24) compresses the spring B (32) to the left. At the same time, the slide (24) also drives the hinge seat, support column (26), connecting plate (27) and rotating seat (28) to move to the left in sync. The rotating seat (28) drives the high frequency circuit board (1) inside it to move to the left in sync. The high frequency circuit board (1) drives the circuit layer (2) on it to move to the left in sync. As the circuit layer (2) gradually passes through the CCD lens (6) to the left, the CCD lens (6) detects in real time whether there are defects on the surface of the circuit layer (2) below it. When the piston rod of the pressure cylinder (11) is fully extended, the circuit layer (2) just passes through the CCD lens (6). At this time, the pressure roller (35) no longer presses down on the push plate (19), the push plate (19) no longer rotates, and the connecting plate (27) is just below the nylon block (31). At the same time, the CCD lens (6) transmits the unqualified electrical signal or the qualified electrical signal to the controller. S3. The controller controls the vertical cylinder (30) corresponding to the CCD lens (6) that emits a non-conforming electrical signal to extend downward. The piston rod drives the nylon block (31) to move downward. The nylon block (31) applies pressure to the connecting plate (27). The connecting plate (27) rotates counterclockwise around the hinge seat. The connecting plate (27) drives the rotating seat (28) to rotate synchronously. The rotating seat (28) drives the non-conforming product inside to rotate synchronously. When the piston rod of the vertical cylinder (30) is fully extended, the non-conforming product and the rotating seat (28) are both in an inclined state. The worker takes the non-conforming product in the inclined state out of the rotating seat (28) and removes the non-conforming product. Then the worker takes the qualified product in the horizontal state out of the rotating seat (28) and places the qualified product on the finished product frame, thus finally realizing the one-time detection of surface defects of the circuit layer (2) on the three high-frequency circuit boards (1). S4. After the three high-frequency circuit boards (1) are tested, the worker controls the piston rod of the pressure cylinder (11) to retract upwards. The piston rod drives the lifting plate (33) to move upwards. The lifting plate (33) drives the rod (34) to move upwards. The rod (34) drives the pressure roller (35) to move upwards. During the upward movement, the push plate (19) rotates counterclockwise around the pin (18) under the elastic restoring force of the spring A (23). At the same time, the slide (24) moves to the right along the horizontal guide rail (16) under the elastic restoring force of the spring B (32). The slide (24) drives the rotating seat (28) to move to the right. After the piston rod of the pressure cylinder (11) is fully retracted, the push plate (19) and the slide (24) both move to the initial state. S5. Workers can repeat steps S1 to S4 multiple times to complete the testing of all high-frequency circuit boards (1) in the workshop.

Images