Hole site detection platform and PCB detection equipment

Abstract

The utility model belongs to the technical field of PCB detection, and particularly relates to a hole site detection platform and PCB detection equipment. The hole site detection platform comprises a workbench, a first driving piece, a second driving piece, a first light source and a second light source. The workbench is used for placing a to-be-detected material plate, the first driving piece can drive the first light source to reciprocate in the first direction, and the second driving piece can drive the second light source to reciprocate in the first direction; the workbench is arranged between the first light source and the second light source in the second direction, irradiation is conducted through the two light sources from different directions, the light sources are increased, the problems of shadow and light reflection caused by illumination of a single light source can be effectively solved, imaging is clearer, capture of the edge of a back drilling hole is improved, and the product percent of pass is increased.

Description

Technical Field

[0001] This utility model belongs to the field of PCB inspection technology, and in particular relates to a hole position detection platform and PCB inspection equipment. Background Technology

[0002] Back drilling refers to drilling holes to a required depth at specified locations on a PCB product. The process requirements for back drilling are very strict, and all products involving back drilling need to undergo full inspection.

[0003] When inspecting back-drilled holes on PCBs, imaging is usually done using a single light source, which results in unclear images. This can only be achieved by reducing the camera's movement speed or lowering the PCB product inspection standards, which can easily lead to many missed detections and affect the product pass rate. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a hole position detection platform and PCB inspection equipment to address the problem of unclear imaging during PCB back drilling inspection.

[0005] To solve the above-mentioned technical problems, on the one hand, this utility model provides a hole position detection platform, including a worktable, a first driving component, a second driving component, a first light source, and a second light source;

[0006] The worktable is used to place the material plate to be tested. The first driving component can drive the first light source to reciprocate along the first direction, and the second driving component can drive the second light source to reciprocate along the first direction.

[0007] The worktable is positioned between the first light source and the second light source along a second direction, and the first direction and the second direction intersect.

[0008] Optionally, the first light source and the second light source move synchronously in the first direction.

[0009] Optionally, the irradiation area of ​​the first light source on the material plate to be tested and the irradiation area of ​​the second light source on the material plate to be tested at least partially overlap.

[0010] Optionally, the hole position detection platform further includes a base and a crossbeam, the crossbeam being mounted on the base and extending along the first direction, and the worktable being slidably connected to the base;

[0011] The first drive component is mounted on the crossbeam.

[0012] Optionally, the hole position detection platform further includes a third driving component, which is mounted on the base and can drive the worktable to reciprocate along a third direction;

[0013] The first direction, the second direction, and the third direction are not parallel to each other and do not overlap.

[0014] Optionally, the third driving component includes a first linear motor and a second linear motor, the base includes a first base and a second base, the first linear motor is mounted on the first base, and the output end of the first linear motor is connected to one side of the worktable along the first direction.

[0015] The second linear motor is mounted on the second base, and the output end of the second linear motor is connected to the other side of the worktable along the first direction; the second driving member is disposed between the first base and the second base along the first direction.

[0016] Optionally, the hole position detection platform further includes an adapter and a fourth driving component mounted on the adapter. The adapter is slidably connected to the crossbeam and connected to the output end of the first driving component. The output end of the fourth driving component is connected to the first light source. The fourth driving component can drive the first light source to reciprocate along the second direction so that the first light source moves closer to or further away from the worktable.

[0017] Optionally, the workbench includes a first light-transmitting plate and a second light-transmitting plate, the first light-transmitting plate being disposed on the second light-transmitting plate, and the first light-transmitting plate being used to press the material plate to be tested placed on the second light-transmitting plate;

[0018] The light beam emitted by the first light source can be transmitted through the first light-transmitting plate to one side surface of the material plate to be tested, and the light beam emitted by the second light source can be transmitted through the second light-transmitting plate to the other side surface of the material plate to be tested.

[0019] Optionally, the hole position detection platform further includes a mounting base, the second driving member is disposed on the side of the second light-transmitting plate opposite to the first light-transmitting plate, the output end of the second driving member is connected to the mounting base, and the second light source is mounted on the mounting base.

[0020] On the other hand, this utility model embodiment provides a PCB inspection device, including an optical inspection component and a hole position inspection platform as described above. The optical inspection component is connected to the output end of the first driving member. The first driving member can drive the first light source and the optical inspection component to move. The optical inspection component is used to inspect the board to be inspected on the worktable.

[0021] The hole position detection platform provided in this embodiment of the utility model, when detecting the back drilled holes of the material plate, uses a first driving component to move the first light source to the detection position, and a second driving component to move the second light source to the detection position. By using two light sources to illuminate from different directions, the number of light sources can be increased, which can effectively reduce the shadow and reflection problems caused by single light source illumination, resulting in clearer imaging, improved capture of the edge of the back drilled hole, and improved product qualification rate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a hole position detection platform provided in an embodiment of the present invention;

[0023] Figure 2 This is another schematic diagram of the hole position detection platform provided in one embodiment of the present invention.

[0024] The reference numerals in the accompanying drawings are as follows:

[0025] 11. Base; 111. First base; 112. Second base; 12. Crossbeam; 13. Third drive unit; 131. First linear motor; 132. Second linear motor; 14. First linear guide rail; 15. Second linear guide rail; 16. Third linear guide rail; 2. First drive unit; 3. Second drive unit; 31. Mounting base; 4. Adapter base; 5. Fourth drive unit; 6. Worktable; 7. Optical inspection assembly;

[0026] a) First direction; b) Second direction; c) Third direction. Detailed Implementation

[0027] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] like Figures 1 to 2 As shown, an embodiment of the present invention provides a hole position detection platform, including a worktable 6, a first driving component 2, a second driving component 3, a first light source, and a second light source.

[0029] The worktable 6 is used to place the material plate to be tested. The first driving component 2 can drive the first light source to reciprocate along the first direction a, and the second driving component 3 can drive the second light source to reciprocate along the first direction a. The worktable 6 is positioned between the first light source and the second light source along the second direction b. The first direction a and the second direction b are not parallel and do not coincide.

[0030] When inspecting the back-drilled holes of the material plate, the first driving component 2 drives the first light source to the inspection position, and the second driving component 3 drives the second light source to the inspection position. By illuminating from different directions with two light sources, the number of light sources can effectively reduce the shadow and reflection problems caused by single light source illumination, resulting in clearer imaging, improved capture of the edge of the back-drilled hole, and improved product qualification rate.

[0031] In this design, the first direction 'a' is the X-direction, and the second direction 'b' is the Z-direction. The first light source is located above the worktable 6, illuminating the upper surface of the material plate from top to bottom. The second light source is located below the worktable 6, illuminating the lower surface of the material plate from bottom to top. By using both light sources to illuminate the back-drilled holes in the material plate, the internal details of each back-drilled hole can be clearly presented, ensuring image quality.

[0032] In one embodiment, the first light source and the second light source move synchronously in the first direction a, so that the illumination angle relationship between them relative to the material plate to be inspected remains stable. During the inspection of back-drilled holes, for the same back-drilled hole or the same area of ​​the material plate, the illumination angles received from the two different directions remain consistent, which helps to obtain good inspection images.

[0033] During the inspection process, after the inspection of a back-drilled hole or a material board in the same area is completed, the first driving component 2 drives the first light source to move, and at the same time the second driving component 3 drives the second light source to move. The two light sources move together to the next inspection position, so that each back-drilled hole or each inspection position is illuminated by two light sources above and below the material board to be inspected.

[0034] In one embodiment, the illumination area of ​​the first light source on the material board to be tested and the illumination area of ​​the second light source on the material board to be tested at least partially overlap, which can increase the illumination effect on the material board to be tested and ensure that a clear image is obtained.

[0035] Preferably, the center of the illumination area of ​​the first light source coincides with the center of the illumination area of ​​the second light source.

[0036] In one embodiment, such as Figure 1 As shown, the hole position detection platform also includes a base 11 and a crossbeam 12. The crossbeam 12 is mounted on the base 11 and extends along the first direction a. The worktable 6 is slidably connected to the base 11. By sliding the worktable 6, the material plate to be tested can be moved to below the crossbeam 12, corresponding to the irradiation area of ​​the first light source and the second light source. After the test is completed, the worktable 6 is moved to a position away from the crossbeam 12 to facilitate the unloading of the material plate and the loading of the next material plate to be tested.

[0037] The first driving component 2 is mounted on the crossbeam 12. The first driving component 2 can drive the first light source to move on the crossbeam 12, so that the first light source can expand the illumination range along the first direction a. By mounting the crossbeam 12 on the base 11, the first light source on the crossbeam 12 is positioned above the worktable 6, and the second light source connected to the base 11 is positioned below the worktable 6, so that the worktable 6 has light sources in both the vertical and horizontal directions.

[0038] In one embodiment, the first drive unit 2 and the second drive unit 3 can be, but are not limited to, a linear motor module and a servo motor module.

[0039] In one embodiment, the hole position detection platform further includes a third driving member 13, which is mounted on the base 11. The third driving member 13 can drive the worktable 6 to reciprocate along a third direction c. The first direction, the second direction, and the third direction are not parallel to each other and do not coincide. When detecting large back drill holes, the back drill holes on the material plate to be tested are distributed in different positions and are numerous. By driving the worktable 6 to slide on the base 11 through the third driving member 13, and cooperating with the movement of the first light source and the second light source in the first direction a, a comprehensive detection of the entire material plate to be tested can be achieved, ensuring the integrity of the detection. Furthermore, the third driving member 13 can drive the worktable 6 to move below the crossbeam 12 during detection. After the detection is completed, the worktable 6 is moved to a position on the base 11 away from the crossbeam 12, which facilitates the loading and unloading of the material plate by the worktable 6.

[0040] Among them, the first direction a, the second direction b, and the third direction c are perpendicular to each other, and the third direction c is the Y direction.

[0041] In one embodiment, such as Figure 1 As shown, the third driving component 13 includes a first linear motor 131 and a second linear motor 132. The base 11 includes a first base 111 and a second base 112, which are arranged opposite to each other along a first direction. One end of the crossbeam 12 is disposed on the first base 111, and the other end is disposed on the second base 112. The second driving component 3 is disposed between the first base 111 and the second base 112 along the first direction a.

[0042] The first linear motor 131 is mounted on the first base 111, and the output end of the first linear motor 131 is connected to one side of the worktable 6 along the first direction a. The second linear motor 132 is mounted on the second base 112, and the output end of the second linear motor 132 is connected to the other side of the worktable 6 along the first direction a. The first linear motor 131 and the second linear motor 132 together drive the worktable 6 to move along the third direction c.

[0043] In this embodiment, by using the first linear motor 131 and the second linear motor 132 to drive the worktable 6 on both sides, the worktable 6 is subjected to uniform force during movement, which greatly enhances its stability and reduces the shaking and vibration that may be caused by uneven force. This allows the material plate placed on the worktable 6 to maintain a stable state, and even under high-speed movement or frequent start-stop, it will not affect the illumination effect of the light source on the material plate or the quality of the detection image.

[0044] Among them, such as Figure 1 As shown, the hole position detection platform also includes a first linear guide rail 14 and a second linear guide rail 15. The first linear guide rail 14 is disposed on the first base 111, and the second linear guide rail 15 is disposed on the second base 112. The worktable 6 is slidably connected to the first base 111 along one side of the first direction a through the first linear guide rail 14, and the worktable 6 is slidably connected to the second base 112 along the other side of the first direction a through the second linear guide rail 15. Driven by the first linear motor 131 and the second linear motor 132, the worktable 6 can slide relative to the base 11 through the first linear guide rail 14 and the second linear guide rail 15, ensuring the linear movement of the worktable 6 in the third direction c.

[0045] In one embodiment, the hole position detection platform further includes an adapter 4 and a fourth driving member 5. The fourth driving member 5 is mounted on the adapter 4. The adapter 4 is slidably connected to the crossbeam 12 and connected to the output end of the first driving member 2. When the first driving member 2 drives the adapter 4 to move, the fourth driving member 5 and the first light source move together along the first direction a.

[0046] The output end of the fourth driving unit 5 is connected to the first light source. The fourth driving unit 5 can drive the first light source to reciprocate along the second direction b so that the first light source moves closer to or further away from the worktable 6, thereby adjusting the illumination range of the first light source on the worktable 6.

[0047] Through the coordinated operation of the first driving component 2 and the fourth driving component 5, the movement and adjustment of the first light source in the XZ plane are realized, greatly increasing the flexibility of illumination adjustment. The fourth driving component 5 adopts a conventional servo motor + lead screw structure.

[0048] In one embodiment, such as Figure 1 As shown, a third linear guide rail 16 is provided on the crossbeam 12, and the third linear guide rail 16 is connected to the adapter 4, thereby realizing the sliding connection of the adapter 4 on the crossbeam 12.

[0049] In one embodiment, the worktable 6 includes a first light-transmitting plate and a second light-transmitting plate. The first light-transmitting plate is disposed on the second light-transmitting plate and is used to press the material plate to be tested placed on the second light-transmitting plate, so that the material plate to be tested remains flat during the testing process, which can effectively reduce the situation where the test results are affected by the warping of the material plate to be tested.

[0050] The light from the first light source can pass through the first light-transmitting plate and illuminate one side of the material plate to be tested, while the light from the second light source can pass through the second light-transmitting plate and illuminate the other side of the material plate to be tested, thus achieving illumination coverage of the material plate to be tested in two directions and reducing detection errors caused by imperfect illumination.

[0051] The material of the first light-transmitting plate is not limited to optical glass; any material with high strength, good wear resistance, and good light transmittance is acceptable. Similarly, the material of the second light-transmitting plate is not limited to optical glass; any material with high strength, good wear resistance, and good light transmittance is acceptable.

[0052] In one example, in the second direction b, the first light-transmitting plate is located above the second light-transmitting plate, the first light source is located above the first light-transmitting plate, and the second light source is located below the second light-transmitting plate. The first light source can illuminate the upper surface of the material plate to be tested, and the second light source can illuminate the lower surface of the material plate to be tested. The material plate to be tested is illuminated in two directions, above and below, through the first light source and the second light source.

[0053] In one embodiment, such as Figure 1 As shown, the hole position detection platform also includes a mounting base 31. The second driving component 3 is located on the side of the second light-transmitting plate opposite to the first light-transmitting plate, i.e., below the second light-transmitting plate. The output end of the second driving component 3 is connected to the mounting base 31, and the second light source is mounted on the mounting base 31. The mounting base 31 serves to connect the second driving component 3 and the second light source. The second driving component 3 can drive the second light source to move through the mounting base 31, realizing the reciprocating movement of the second light source in the first direction a.

[0054] On the other hand, such as Figure 2 As shown, this utility model embodiment provides a PCB inspection device, including an optical inspection component 7 and a hole position inspection platform as described above. The optical inspection component 7 is connected to the output end of the first driving component 2. The optical inspection component 7 is used to inspect the board to be inspected on the worktable 6. The first driving component 2 can drive the first light source and the optical inspection component 7 to move synchronously, so that the first light source maintains the illumination of the board to be inspected when the optical inspection component 7 is inspecting.

[0055] The hole position detection platform, through illumination from the first and second light sources and the movement of the worktable 6, can cover the detection of back-drilled holes at different locations on the material board to be inspected. The optical detection component 7 can detect the entire surface of the material board to be inspected through its own scanning and imaging methods, minimizing the risk of defective products being shipped out due to missed detections.

[0056] Furthermore, the optical detection component 7 is mounted on the adapter 4. When the first driving member 2 drives the adapter 4 to slide on the crossbeam, the optical detection component 7 can follow the adapter 4 to move on the crossbeam 12, expanding its detection range. At the same time, in conjunction with the movement of the worktable 6 in the third direction c, it helps to achieve comprehensive coverage detection.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A borehole position detection platform, characterized in that, It includes a worktable, a first driving component, a second driving component, a first light source, and a second light source; The worktable is used to place the material plate to be tested. The first driving component can drive the first light source to reciprocate along the first direction, and the second driving component can drive the second light source to reciprocate along the first direction. The worktable is positioned between the first light source and the second light source along a second direction, and the first direction and the second direction intersect.

2. The borehole position detection platform as described in claim 1, characterized in that, The first light source and the second light source move synchronously in the first direction.

3. The borehole position detection platform as described in claim 1, characterized in that, The irradiation area of ​​the first light source on the material plate to be tested and the irradiation area of ​​the second light source on the material plate to be tested overlap at least partially.

4. The borehole position detection platform as described in any one of claims 1-3, characterized in that, The hole position detection platform also includes a base and a crossbeam. The crossbeam is mounted on the base and extends along the first direction. The worktable is slidably connected to the base. The first drive component is mounted on the crossbeam.

5. The borehole position detection platform as described in claim 4, characterized in that, The hole position detection platform also includes a third driving component, which is mounted on the base and can drive the worktable to reciprocate along a third direction. The first direction, the second direction, and the third direction are not parallel to each other and do not overlap.

6. The borehole location detection platform as described in claim 5, characterized in that, The third driving component includes a first linear motor and a second linear motor. The base includes a first base and a second base. The first linear motor is mounted on the first base, and the output end of the first linear motor is connected to one side of the worktable along the first direction. The second linear motor is mounted on the second base, and the output end of the second linear motor is connected to the other side of the worktable along the first direction.

7. The borehole position detection platform as described in claim 4, characterized in that, The hole position detection platform also includes an adapter and a fourth driving component mounted on the adapter. The adapter is slidably connected to the crossbeam and connected to the output end of the first driving component. The output end of the fourth driving component is connected to the first light source. The fourth driving component can drive the first light source to reciprocate along the second direction so that the first light source moves closer to or further away from the worktable.

8. The borehole position detection platform as described in claim 1, characterized in that, The workbench includes a first light-transmitting plate and a second light-transmitting plate. The first light-transmitting plate is disposed on the second light-transmitting plate and is used to press the material plate to be tested placed on the second light-transmitting plate. The light beam emitted by the first light source can be transmitted through the first light-transmitting plate to one side surface of the material plate to be tested, and the light beam emitted by the second light source can be transmitted through the second light-transmitting plate to the other side surface of the material plate to be tested.

9. The borehole position detection platform as described in claim 8, characterized in that, The hole position detection platform also includes a mounting base, the second driving component is disposed on the side of the second light-transmitting plate opposite to the first light-transmitting plate, the output end of the second driving component is connected to the mounting base, and the second light source is mounted on the mounting base.

10. A PCB inspection device, characterized in that, The device includes an optical detection component and a hole detection platform as described in any one of claims 1-9. The optical detection component is connected to the output end of the first driving member. The first driving member is capable of driving the first light source and the optical detection component to move. The optical detection component is used to detect the material plate to be tested on the worktable.

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