Simple and efficient PCB surface crack detection device

Abstract

A simple and efficient PCB surface crack detection device comprises a feeding assembly, a roller coating assembly, a detection assembly and an intelligent detection system. The feeding assembly comprises a machining table and a bearing tray. The roller coating assembly comprises a roller coating frame, a coating roller and a fluorescent ink box; the detection assembly comprises a detection frame, a camera obscura and a visual detection camera. The simple and efficient PCB surface crack detection device disclosed by the utility model has the beneficial effects that the fluorescent roller coating structure is designed to be matched with the feeding structure and the visual detection structure, so that the detection of the PCB surface crack is simple and efficient, and compared with artificial visual detection, fluorescent marking and machine visual detection are more accurate and reliable; a cleaning structure and a drying structure are designed, so that the PCB coated with fluorescent ink can be quickly cleaned and dried, and the detected PCB can better flow into a subsequent processing flow; the utility model has the advantages of strong practicability and strong popularization significance.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing, and in particular to a simple and efficient PCB surface crack detection device. Background Technology

[0002] A PCB, or circuit board, is an important electronic component. It serves as the support for electronic components and the carrier for their electrical interconnection. Almost every electronic device, from small items like electronic watches and calculators to large systems like computers, communication equipment, and military weaponry, uses a PCB to enable electrical interconnection between integrated circuits and other electronic components.

[0003] During the manufacturing process, PCBs are susceptible to surface cracks due to internal stress or external forces, leading to poor quality. These defective PCBs need to be promptly inspected and removed from the production line to prevent them from being mixed with high-quality PCBs and affecting shipment. Traditional PCB surface crack inspection often relies on manual visual inspection, which is not only inefficient but also lacks reliable results. Utility Model Content

[0004] Therefore, it is necessary to provide a simple and efficient PCB surface crack detection device to address the shortcomings of existing technologies.

[0005] A simple and efficient PCB surface crack detection device includes a feeding assembly, a roller coating assembly, a detection assembly, and an intelligent detection system. The feeding assembly includes a processing table and a carrying tray. A feeding slide rail is provided on the processing table, and the carrying tray is mounted on and can slide along the feeding slide rail. The roller coating assembly and the detection assembly are sequentially mounted on the processing table, both located above the feeding slide rail. The roller coating assembly includes a roller coating frame, a coating roller, and a fluorescent ink cartridge. A coating slide rail is provided on the processing table, and the roller coating frame is mounted on and can slide along the coating slide rail. The coating roller is mounted on the roller coating frame and can rotate. The fluorescent ink cartridge is mounted on the processing table and located on one side of the coating roller. The detection assembly includes a detection frame, a dark box, and a visual inspection camera. The detection frame and the dark box are both mounted on the processing table, with the dark box located below the detection frame. The visual inspection camera is mounted on the detection frame and extends into the dark box, and is also connected to the intelligent detection system via signal.

[0006] Furthermore, the inspection frame includes a frame body and a lifting robotic arm. The frame body stands on the processing table, the upper end of the lifting robotic arm is mounted on the frame body, and its lower end extends through the dark box. The visual inspection camera is mounted on the lower end of the lifting robotic arm and can be moved up and down by the lifting robotic arm.

[0007] Furthermore, the detection component also includes an auxiliary fill light, which is installed on the inner wall of the darkroom.

[0008] Furthermore, the simple and efficient PCB surface crack detection device also includes a cleaning component, which is located to the right of the detection component. The cleaning component includes a cleaning box and several cleaning nozzles. The cleaning box is hollow with an open bottom and is mounted on the processing table above the feeding slide rail. The cleaning nozzles are all mounted on the cleaning box, and their bottom ends extend into the cleaning box.

[0009] Furthermore, the processing table is also equipped with a wastewater collection channel and a wastewater collection box. The wastewater collection channel is located below the cleaning components, and the wastewater collection box has an open top design. It is fitted into the processing table and located below the wastewater collection channel.

[0010] Furthermore, the simple and efficient PCB surface crack detection device also includes a drying component, which is located to the right of the cleaning component. The drying component includes a drying chamber and a heater. The drying chamber is mounted on the processing table and located above the feeding slide rail, and the heater is installed inside the drying chamber.

[0011] Furthermore, the drying oven is provided with several exhaust vents on both sides.

[0012] In summary, the beneficial effects of this simple and efficient PCB surface crack detection device are as follows: by designing a fluorescent roller coating structure in conjunction with a feeding structure and a visual inspection structure, the detection of PCB surface cracks is both simple and efficient. Moreover, compared with manual visual inspection, the use of fluorescent marking and machine vision inspection is more accurate and reliable. The design of the cleaning and drying structures can quickly clean and dry the PCBs coated with fluorescent ink, allowing the inspected PCBs to better flow into subsequent processing flows. This invention is highly practical and has significant potential for widespread application. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a simple and efficient PCB surface crack detection device according to the present invention.

[0014] Figure 2 for Figure 1 A schematic diagram of the decomposed structure;

[0015] Figure 3 for Figure 2 Exploded view of the central feeding assembly;

[0016] Figure 4 for Figure 2 Schematic diagram of the structure of the intermediate roller coating assembly;

[0017] Figure 5 for Figure 2 A schematic diagram of the exploded structure of the detection component;

[0018] Figure 6 for Figure 2 Exploded view of the cleaning component;

[0019] Figure 7 for Figure 2 A schematic diagram of the exploded structure of the drying component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0021] like Figures 1 to 7 As shown, this utility model provides a simple and efficient PCB surface crack detection device 100, which includes a feeding assembly 10, a roller coating assembly 20, a detection assembly 30, and an intelligent detection system (not shown). The feeding assembly 10 includes a processing table 11 and a carrying tray 12. The processing table 11 is provided with a feeding slide rail 111, and the carrying tray 12 is mounted on the feeding slide rail 111 of the processing table 11 and can slide along the feeding slide rail 111. The roller coating assembly 20 and the detection assembly 30 are sequentially mounted on the processing table 11 and are both located above the feeding slide rail 111. It is understood that this utility model also includes several drive structures, sensors, power supplies, air sources, water supply structures, and automatic control systems. Since these are all conventional technologies in the field, they will not be described in detail.

[0022] The roller coating assembly 20 includes a roller coating frame 21, a coating roller 22, and a fluorescent ink cartridge 23. The processing table 11 is equipped with a coating slide rail 112. The roller coating frame 21 is mounted on the coating slide rail 112 of the processing table 11 and can slide along the coating slide rail 112. The coating roller 22 is mounted on the roller coating frame 21 and can rotate. The fluorescent ink cartridge 23 is mounted on the processing table 11 and located on one side of the coating roller 22. The detection assembly 30 includes a detection frame 31, a dark box 32, and a visual inspection camera 33. The detection frame 31 and the dark box 32 are both mounted on the processing table 11, with the dark box 32 located below the detection frame 31. The visual inspection camera 33 is mounted on the detection frame 31 and extends into the dark box 32, and the visual inspection camera 33 is also connected to the intelligent detection system.

[0023] When surface crack detection is required on a PCB, it is first placed in the carrier tray 12, which then positions the PCB below the roller coating assembly 20. Next, the roller coating frame 21 first moves the coating roller 22 to apply fluorescent ink to the fluorescent ink cartridge 23, and then rolls the fluorescent ink onto the PCB surface. Then, the carrier tray 12 moves the PCB into the dark chamber 32 of the detection assembly 30. Because the surface is coated with fluorescent ink, the visual inspection camera 33 can capture an image of the PCB surface. Since the distribution of the fluorescent ink differs between the normal surface and the crack location, the presence of cracks on the PCB surface can be accurately and reliably detected.

[0024] The inspection frame 31 includes a frame body 311 and a lifting robotic arm 312. The frame body 311 stands on the processing table 11. The upper end of the lifting robotic arm 312 is mounted on the frame body 311, and its lower end extends into the dark box 32. The visual inspection camera 33 is mounted on the lower end of the lifting robotic arm 312 and can be moved up and down by the lifting robotic arm 312. The lifting robotic arm 312, which can move the visual inspection camera 33 up and down, can flexibly adjust the distance between the camera and the PCB to inspect PCB surfaces of different sizes and specifications. The inspection assembly 30 also includes an auxiliary fill light 34, which is mounted on the inner wall of the dark box 32. The auxiliary fill light 34 can provide appropriate light source assistance to the dark box 32 to avoid insufficient fluorescent ink effect affecting the inspection results.

[0025] The simple and efficient PCB surface crack detection device 100 also includes a cleaning component 40, which is located to the right of the detection component 30. The cleaning component 40 includes a cleaning box 41 and several cleaning nozzles 42. The cleaning box 41 is hollow with an open bottom and is mounted on the processing table 11 above the feeding slide rail 111. The cleaning nozzles 42 are mounted on the cleaning box 41, with their bottom ends extending into the box. After PCB inspection, the feeding component 10 can deliver the PCB to the cleaning component 40, where the cleaning nozzles 42 spray water to wash away the fluorescent ink on the PCB surface. The cleaning box 41 acts as a shield to prevent water splashing during the rinsing process.

[0026] The processing table 11 is also equipped with a wastewater collection channel 113 and a wastewater collection tank 114. The wastewater collection channel 113 is located below the cleaning component 40, and the wastewater collection tank 114 has an open top design, is snapped into the processing table 11, and is located below the wastewater collection channel 113. Wastewater from rinsing the PCB can fall into the wastewater collection tank 114 through the wastewater collection channel 113, and the collected wastewater can be centrally treated to avoid environmental pollution.

[0027] The simple and efficient PCB surface crack detection device 100 also includes a drying component 50, located to the right of the cleaning component 40. The drying component 50 includes a drying chamber 51 and a heater 52. The drying chamber 51 is mounted on the processing table 11 and located above the feeding slide rail 111, and the heater 52 is installed inside the drying chamber 51. The drying component 50 can heat and dry the cleaned PCB, ensuring the PCB remains dry before being unloaded and ready for subsequent processing. Several exhaust ports 511 are also provided on both sides of the drying chamber 51. The exhaust ports 511 facilitate the discharge of water vapor evaporated by heat from the drying chamber 51.

[0028] In summary, the beneficial effects of this simple and efficient PCB surface crack detection device 100 are as follows: by designing a fluorescent roller coating structure in conjunction with a feeding structure and a visual inspection structure, the detection of PCB surface cracks is both simple and efficient. Moreover, compared with manual visual inspection, the use of fluorescent marking and machine vision inspection is more accurate and reliable. The design of the cleaning and drying structures can quickly clean and dry the PCBs coated with fluorescent ink, allowing the inspected PCBs to better flow into subsequent processing flows. This utility model is highly practical and has significant potential for widespread application.

[0029] The embodiments described above illustrate only one implementation of the utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be determined by the appended claims.

Claims

1. A simple and efficient PCB surface crack detection device, characterized in that: The system includes a feeding assembly, a roller coating assembly, a detection assembly, and an intelligent detection system. The feeding assembly comprises a processing table and a material carrier tray. A feeding slide rail is provided on the processing table, and the material carrier tray is mounted on and can slide along the feeding slide rail. The roller coating assembly and the detection assembly are sequentially mounted on the processing table, both located above the feeding slide rail. The roller coating assembly includes a roller coating frame, a coating roller, and a fluorescent ink cartridge. A coating slide rail is provided on the processing table, and the roller coating frame is mounted on and can slide along the coating slide rail. The coating roller is mounted on the roller coating frame and can rotate. The fluorescent ink cartridge is mounted on the processing table and located to one side of the coating roller. The detection assembly includes a detection frame, a dark box, and a visual inspection camera. The detection frame and the dark box are both mounted on the processing table, with the dark box located below the detection frame. The visual inspection camera is mounted on the detection frame and extends into the dark box, and is also signal-connected to the intelligent detection system.

2. The simple and efficient PCB surface crack detection device as described in claim 1, characterized in that: The inspection frame includes a frame body and a lifting robotic arm. The frame body stands on the processing table. The upper end of the lifting robotic arm is mounted on the frame body, and its lower end extends through the dark box. The visual inspection camera is mounted on the lower end of the lifting robotic arm and can be moved up and down by the lifting robotic arm.

3. The simple and efficient PCB surface crack detection device as described in claim 1, characterized in that: The detection assembly also includes an auxiliary fill light, which is installed on the inner wall of the darkroom.

4. The simple and efficient PCB surface crack detection device as described in claim 1, characterized in that: It also includes a cleaning component, which is located to the right of the detection component. The cleaning component includes a cleaning box and several cleaning nozzles. The cleaning box is hollow and has an open bottom. It is mounted on the processing table and located above the feeding slide rail. Several cleaning nozzles are mounted on the cleaning box and their bottom ends extend into the cleaning box.

5. The simple and efficient PCB surface crack detection device as described in claim 4, characterized in that: The processing table is also equipped with a wastewater collection channel and a wastewater collection box. The wastewater collection channel is located below the cleaning components, and the wastewater collection box has an open top design. It is fitted into the processing table and located below the wastewater collection channel.

6. The simple and efficient PCB surface crack detection device as described in claim 4, characterized in that: It also includes a drying assembly located to the right of the cleaning assembly. The drying assembly includes a drying chamber and an electric heater. The drying chamber is mounted on the processing table and located above the feeding slide rail. The electric heater is installed inside the drying chamber.

7. The simple and efficient PCB surface crack detection device as described in claim 6, characterized in that: The drying oven is also equipped with several exhaust vents on both sides.

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