PCB board hole inspection device

Abstract

This utility model relates to the field of testing equipment technology, and in particular to a PCB board machining hole detection device, comprising a device body, which includes a frame, an air flotation platform, a detection unit, and an electrical control box. The frame is located below the air flotation platform. A worktable is provided above the air flotation platform, and the worktable includes an upper suction plate and a lower suction plate located below the upper suction plate. The upper and lower suction plates cooperate to form an adsorption structure for supporting the printed circuit board. The detection unit includes a camera mechanism for photographing the laser-processed holes on the printed circuit board. The electrical control box is located on one side of the frame and is connected to a PC control system, which is electrically connected to the detection unit. This utility model provides a PCB board machining hole detection device that improves the accuracy, efficiency, and reliability of PCB board machining hole detection.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a PCB board processing hole testing device. Background Technology

[0002] Printed circuit boards (PCBs) are the support structure for electronic components and the provider of electrical connections between them. They typically consist of an insulating base plate, connecting wires, and pads for assembling and soldering electronic components. They are characterized by high integration, miniaturization, and lightweight design, and are widely used in the manufacturing of electronic equipment.

[0003] Currently, the quality of machined holes on printed circuit boards directly affects the assembly accuracy and electrical performance of components, thus requiring their inspection. Existing printed circuit board machined hole inspection equipment has the following shortcomings: it lacks effective vibration damping measures, and external vibrations affect the camera's shooting accuracy; board positioning relies on manual placement, resulting in large positional deviations; camera movement depends on manual adjustment, making it impossible to automatically cover the entire board for inspection, leading to low efficiency; inspection data processing requires manual intervention, which is prone to errors; and dust and other impurities can easily enter the equipment in open environments, affecting the lifespan of the inspection unit and the inspection results. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a PCB board machining hole detection device to improve the accuracy, efficiency and reliability of PCB board machining hole detection.

[0005] The present invention adopts the following technical solution:

[0006] A PCB board machining hole inspection device includes a device body, which comprises a frame, an air flotation platform, an inspection unit, and an electrical control box. The frame is located below the air flotation platform. A worktable is provided above the air flotation platform. The worktable includes an upper suction plate and a lower suction plate located below the upper suction plate. The upper and lower suction plates cooperate to form an adsorption structure for supporting the printed circuit board. The inspection unit includes a camera mechanism for photographing the laser-processed holes on the printed circuit board. The electrical control box is located on one side of the frame and is connected to a PC control system. The PC control system is electrically connected to the inspection unit and is used to receive, analyze, process, and output inspection results from the photographed data.

[0007] A further improvement to the above technical solution is that the upper suction plate is provided with a positioning structure, the positioning structure including two positioning plates arranged perpendicularly to each other, the two positioning plates being respectively arranged at the edge of the upper suction plate for precise positioning of the printed circuit board supported on the upper suction plate.

[0008] A further improvement to the above technical solution is that a connecting seat is provided at the bottom of the lower suction plate, and the connecting seat is fixedly installed above the air flotation platform.

[0009] A further improvement to the above technical solution is that the detection unit further includes a driving mechanism, which is used to drive the camera mechanism to move.

[0010] A further improvement to the above technical solution is that the driving mechanism includes a gantry, a longitudinal movement module, and a transverse movement module; the gantry is positioned above the worktable and connected to the longitudinal movement module; the longitudinal movement module is used to drive the gantry to move; and the transverse movement module is used to drive the camera mechanism to move.

[0011] A further improvement to the above technical solution is that the longitudinal movement module includes a longitudinal drive electric cylinder, a longitudinal cable chain, a linear slider, and a linear guide rod; the longitudinal drive electric cylinder is connected to the bottom of one end of the gantry frame; the longitudinal cable chain is connected to the gantry frame; the linear slider is connected to the bottom of the other end of the gantry frame; and the linear guide rod is in sliding engagement with the linear slider.

[0012] A further improvement to the above technical solution is that the lateral movement module includes a lateral drive electric cylinder and a lateral drag chain; the lateral drive electric cylinder and the lateral drag chain are respectively connected to the camera mechanism.

[0013] A further improvement to the above technical solution is that the camera mechanism includes a camera body and a lifting slide, the camera body being connected to the lifting slide; the lifting slide is connected to a lifting motor, the lifting motor being used to drive the lifting slide to move in the vertical direction to adjust the height of the camera body.

[0014] A further improvement to the above technical solution is that the device body also includes a protective shell, and the air flotation platform and the detection unit are respectively located inside the protective shell; a supply opening is provided on one side of the protective shell, and the supply opening is used to supply printed circuit boards to the workbench and to remove printed circuit boards from the workbench.

[0015] A further improvement to the above technical solution is that the frame includes four legs, which are respectively fixedly connected to the bottom of the air-floating platform. A connecting rod is connected between two adjacent legs, and a caster is provided at the bottom of the connecting rod.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention achieves high-precision automated inspection through an air-floating platform for shock absorption, an adsorption and positioning structure for fixing the plate, and a multi-dimensional drive mechanism combined with camera height adjustment. A protective shell and a stable frame enhance equipment protection and structural stability. These components work together to solve the problems of low precision, insufficient efficiency, and poor protection in existing equipment, constructing a high-precision, automated, and durable inspection system. In industrial applications, it can improve inspection efficiency and accuracy, reduce labor costs and error rates, meet the high-precision inspection needs of the electronics manufacturing industry, and contribute to production quality control and capacity improvement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the PCB board machining hole detection device of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the workbench of the PCB board processing hole inspection device;

[0020] Figure 3 for Figure 1 A schematic diagram of the detection unit of the PCB board machining hole detection device;

[0021] Figure 4 for Figure 1 A schematic diagram of the camera mechanism of a PCB board machining hole detection device;

[0022] Figure 5 for Figure 1 The schematic diagram of the electrical control box and PC control system of the PCB board machining hole detection device.

[0023] The numbers on the map are:

[0024] 10. Device body; 11. Air flotation platform; 12. Printed circuit board; 13. Protective housing; 14. Supply opening; 20. Frame; 21. Support leg; 22. Connecting rod; 23. Casters; 30. Detection unit; 31. Drive mechanism; 32. Gantry frame; 40. Electrical control box; 41. PC control system; 50. Workbench; 51. Upper suction plate; 52. Lower suction plate; 53. Connecting seat; 60. Camera mechanism; 61. Camera body; 62. Lifting slide; 63. Lifting motor; 70. Positioning structure; 71. Positioning plate; 80. Longitudinal movement module; 81. Longitudinal drive cylinder; 82. Longitudinal drag chain; 83. Linear slider; 84. Linear guide rod; 90. Lateral movement module; 91. Lateral drag chain. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1 to 5 The diagram illustrates an embodiment of the present invention, relating to a PCB board machining hole detection device. The device includes a main body 10, comprising a frame 20, an air-float platform 11, a detection unit 30, and an electrical control box 40. The frame 20 is positioned below the air-float platform 11. A worktable 50 is positioned above the air-float platform 11, comprising an upper suction plate 51 and a lower suction plate 52 positioned below the upper suction plate 51. The upper suction plate 51 and the lower suction plate 52 cooperate to form an adsorption structure for supporting the printed circuit board 12. The detection unit 30 includes a camera mechanism 60, which is used to photograph the laser-processed holes on the printed circuit board 12 to detect the surface diameter, bottom diameter, bottom processing status, and depth from the surface to the bottom of the laser-processed holes. The electrical control box 40 is located on one side of the frame 20 and is connected to a PC control system 41. The PC control system 41 is electrically connected to the detection unit 30 and is used to receive, analyze, process, and output detection results from the photographed data.

[0029] Furthermore, the air flotation platform 11 isolates external vibrations through air suspension, creating a stable environment for inspection and preventing camera images from becoming blurry due to vibration, thus fundamentally improving inspection accuracy. The upper suction plate 51 and lower suction plate 52 are connected to a vacuum pump to generate negative pressure and form an adsorption structure. The vacuum adsorption force is used to firmly fix the PCB board, preventing the board from shifting or warping during inspection and ensuring consistent inspection standards. The PC control system 41 connected to the electrical control box 40 automatically processes data. Compared with manual inspection, it not only improves efficiency but also reduces human error through preset algorithms, meeting the dual requirements of accuracy and efficiency for large-scale industrial inspection.

[0030] Furthermore, the upper suction plate 51 is provided with a positioning structure 70, which includes two mutually perpendicular positioning plates 71. The two positioning plates 71 are respectively arranged at the edge of the upper suction plate 51 for precise positioning of the printed circuit board 12 supported on the upper suction plate 51. Specifically, the perpendicular positioning plates 71 at the edge of the upper suction plate 51 establish a right-angle reference, allowing operators to quickly align the edges of the board, reducing manual positioning deviations and trial-and-error time. This design ensures the consistency of the board's position, makes the camera's captured coordinates repeatable, and guarantees consistent and reliable inspection data. Especially in batch inspection, it avoids missed detections or misjudgments due to positioning deviations.

[0031] Furthermore, a connecting seat 53 is provided at the bottom of the lower suction plate 52, and the connecting seat 53 is fixedly installed above the air flotation platform 11. Specifically, the connecting seat 53 fixes the lower suction plate 52 and the air flotation platform 11, enhancing the stability of the worktable 50. On the one hand, it prevents the lower suction plate 52 from loosening and maintains the stability of the adsorption structure; on the other hand, it fully transmits the shock absorption effect of the air flotation platform 11, avoids performance degradation due to weak connection structure, ensures long-term reliable operation of the equipment, and extends its service life.

[0032] Furthermore, the detection unit 30 also includes a driving mechanism 31, which drives the camera mechanism 60 to move. Specifically, the driving mechanism 31 automatically drives the vision camera to move, covering all holes without manual intervention. It can accurately plan the detection path, ensuring no holes are missed, freeing up manpower while avoiding repetitive or missed detections caused by human operation, making it particularly suitable for inspecting PCBs with densely packed holes.

[0033] Furthermore, the drive mechanism 31 includes a gantry 32, a longitudinal movement module 80, and a transverse movement module 90. The gantry 32 spans above the worktable 50 and is connected to the longitudinal movement module 80. The longitudinal movement module 80 drives the gantry 32 to move. The transverse movement module 90 drives the camera mechanism 60 to move. Specifically, the gantry 32 spans above the worktable 50, forming an open inspection space that does not obstruct loading and unloading. The longitudinal and transverse movement modules 90 construct a two-dimensional motion system, allowing the camera mechanism to move freely. By programming and controlling the movement distance and speed, it adapts to printed circuit boards 12 of different sizes and hole layouts, achieving full-board inspection without blind spots and expanding the applicability of the equipment.

[0034] Furthermore, the longitudinal movement module 80 includes a longitudinal drive cylinder 81, a longitudinal cable chain 82, a linear slider 83, and a linear guide rod 84. The longitudinal drive cylinder 81 is connected to the bottom of one end of the gantry 32; the longitudinal cable chain 82 is connected to the gantry 32; the linear slider 83 is connected to the bottom of the other end of the gantry 32; and the linear guide rod 84 is in sliding engagement with the linear slider 83. Specifically, the longitudinal drive cylinder 81 provides stable power, and the linear slider 83 and linear guide rod 84 provide guidance, reducing the movement deviation of the gantry 32. The longitudinal cable chain 82 stores cables, avoiding malfunctions caused by pulling and tangling, ensuring the stability of equipment operation, reducing maintenance costs, and achieving millimeter-level movement control.

[0035] Furthermore, the lateral movement module 90 includes a lateral drive cylinder (not shown in the figure) and a lateral cable chain 91; the lateral drive cylinder (not shown in the figure) and the lateral cable chain 91 are respectively connected to the camera mechanism 60. Specifically, the lateral drive cylinder (not shown in the figure) cooperates with the cable chain to provide power and cable management for the lateral movement of the camera mechanism 60. This ensures that the cables are orderly during frequent reciprocating motion of the camera, avoiding the impact of cable tangling on operation or damage to components, and extending the life of the camera mechanism and circuit components.

[0036] Furthermore, the camera mechanism 60 includes a camera body 61 and a lifting slide 62, with the camera body 61 connected to the lifting slide 62. The lifting slide 62 is connected to a lifting motor 63, which drives the lifting slide 62 to move vertically, thereby adjusting the height of the camera body 61. Specifically, the lifting motor 63 drives the lifting slide 62 to adjust the camera height, adapting to hole detection at different depths. Combined with the longitudinal movement module 80 and the lateral movement module 90, multi-angle image acquisition is achieved, comprehensively covering the surface, bottom, and wall conditions of the hole, solving the problem of missing details in single-height detection.

[0037] Furthermore, the device body 10 also includes a protective housing 13, inside which the air flotation platform 11 and the detection unit 30 are respectively disposed. A supply opening 14 is provided on one side of the protective housing 13, which is used to supply the printed circuit board 12 to the worktable 50 and to remove the printed circuit board 12 from the worktable 50. Specifically, the protective housing 13 isolates dust, liquids, and other impurities, protecting precision components such as the air flotation platform 11 and the detection unit 30. The supply opening 14 balances protection and ease of operation, allowing operators to load and unload materials without damaging the protective environment, extending equipment life and improving operational safety.

[0038] Furthermore, the frame 20 includes four support legs 21, which are respectively fixedly connected to the bottom of the air-floating platform 11. A connecting rod 22 connects adjacent support legs 21, and casters 23 are provided at the bottom of the connecting rod 22. Specifically, the support legs 21 and connecting rods 22 form a stable frame 20, and the casters 23 facilitate equipment movement. This ensures operational stability and allows for easy layout adjustments in scenarios such as workshop renovations, eliminating the need for additional handling tools and improving the equipment's site adaptability and ease of use.

[0039] This invention achieves high-precision automated inspection through a shock-absorbing air flotation platform 11, a plate-fixing adsorption and positioning structure 70, and a multi-dimensional drive mechanism 31 combined with camera height adjustment. A protective shell 13 and a stable frame 20 enhance equipment protection and structural stability. These components work together to solve the problems of low precision, insufficient efficiency, and poor protection in existing equipment, constructing a high-precision, automated, and durable inspection system. In industrial applications, it can improve inspection efficiency and accuracy, reduce labor costs and error rates, meet the high-precision inspection needs of the electronics manufacturing industry, and contribute to production quality control and capacity improvement.

[0040] The above description merely illustrates the preferred technical solution of this 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 concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A PCB board processing hole detection device, characterized in that, The device includes a main body, which comprises a frame, an air flotation platform, a detection unit, and an electrical control box. The frame is located below the air flotation platform. A worktable is located above the air flotation platform. The worktable includes an upper suction plate and a lower suction plate located below the upper suction plate. The upper and lower suction plates cooperate to form an adsorption structure for supporting printed circuit boards. The detection unit includes a camera mechanism for photographing laser-processed holes on the printed circuit board. The electrical control box is located on one side of the frame and is connected to a PC control system. The PC control system is electrically connected to the detection unit and is used to receive, analyze, process, and output detection results from the photographed data.

2. The PCB board machining hole detection device according to claim 1, characterized in that, The upper suction plate is provided with a positioning structure, which includes two positioning plates arranged perpendicularly to each other. The two positioning plates are respectively arranged at the edge of the upper suction plate for precise positioning of the printed circuit board supported on the upper suction plate.

3. The PCB board machining hole detection device according to claim 1, characterized in that, The bottom of the lower suction plate is provided with a connecting seat, which is fixedly installed above the air flotation platform.

4. The PCB board machining hole detection device according to claim 1, characterized in that, The detection unit also includes a drive mechanism for driving the camera mechanism to move.

5. The PCB board machining hole detection device according to claim 4, characterized in that, The drive mechanism includes a gantry frame, a longitudinal movement module, and a transverse movement module; the gantry frame spans above the worktable and is connected to the longitudinal movement module; the longitudinal movement module is used to drive the gantry frame to move; the transverse movement module is used to drive the camera mechanism to move.

6. The PCB board machining hole detection device according to claim 5, characterized in that, The longitudinal movement module includes a longitudinal drive electric cylinder, a longitudinal cable chain, a linear slider, and a linear guide rod; the longitudinal drive electric cylinder is connected to the bottom of one end of the gantry frame; the longitudinal cable chain is connected to the gantry frame; the linear slider is connected to the bottom of the other end of the gantry frame; and the linear guide rod is in sliding engagement with the linear slider.

7. The PCB board machining hole detection device according to claim 5, characterized in that, The lateral movement module includes a lateral drive electric cylinder and a lateral drag chain; the lateral drive electric cylinder and the lateral drag chain are respectively connected to the camera mechanism.

8. The PCB board machining hole detection device according to claim 1, characterized in that, The camera mechanism includes a camera body and a lifting slide. The camera body is connected to the lifting slide. The lifting slide is connected to a lifting motor, which drives the lifting slide to move vertically to adjust the height of the camera body.

9. The PCB board machining hole detection device according to claim 1, characterized in that, The device body also includes a protective housing, and the air flotation platform and the detection unit are respectively located inside the protective housing; a supply opening is provided on one side of the protective housing, and the supply opening is used to supply printed circuit boards to the workbench and to remove printed circuit boards from the workbench.

10. The PCB board machining hole detection device according to claim 1, characterized in that, The frame includes four legs, which are fixedly connected to the bottom of the air flotation platform. A connecting rod is connected between two adjacent legs, and casters are provided at the bottom of the connecting rod.

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