Jig for detecting ink entering hole of circuit board

Abstract

The utility model relates to an ink hole entering detection jig for a circuit board, which comprises a base, an LED lamp panel arranged on the base, a supporting column connected with the base, a projection plate connected with the supporting column and placed above the base, and a CCD camera arranged on the supporting column and shooting towards the projection plate, and the circuit board to be detected is placed on the LED lamp panel. The LED lamp panel irradiates the circuit board to be detected and penetrates through the via holes to project a plurality of light spots on the projection plate. According to the printing ink hole entering detection jig of the circuit board provided by the utility model, the circuit board to be detected is placed on the LED lamp panel, light emitted by the LED lamp panel irradiates the circuit board to be detected, part of the light can penetrate through the via holes and form clear light spots on the projection plate, and the CCD camera shoots light spot images on the projection plate so as to detect the printing ink hole entering of the circuit board. And the image processing system is used for analysis and judgment, so that whether the interior of the via hole is blocked by ink can be detected, abnormity occurs in time, and the quality of the circuit board is ensured.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, and in particular to an ink inlet hole detection jig for circuit boards. Background Art

[0002] Traditional circuit board via hole ink detection, as described in patent document 2019213605180, uses the pin insertion method. However, in actual applications, we found that the alignment process between the pin and the via hole is quite complicated and difficult. This inaccuracy in alignment often leads to misjudgment, making us mistakenly believe that there is ink in the via hole, which in turn affects the accuracy of the detection. In view of this, this detection method urgently needs to be improved and optimized to improve the accuracy and reliability of the detection. Utility Model Content

[0003] In view of this, the utility model provides an ink entry hole detection jig for a circuit board. The circuit board to be detected is placed on an LED light board. The light emitted by the LED light board illuminates the circuit board to be detected. Part of the light can pass through the via hole and form a clear light spot on the projection board. The light spot image on the projection board is photographed by a CCD camera, and analyzed and judged by an image processing system. It can detect whether the via hole is blocked by ink and detect abnormalities in time to ensure the quality of the circuit board.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A circuit board ink hole detection jig comprises a base, an LED light board arranged on the base, a support column connected to the base, a projection board connected to the support column and placed above the base, and a CCD camera arranged on the support column and shooting toward the projection board. The circuit board to be detected is placed on the LED light board, and the LED light board illuminates the circuit board to be detected and passes through the conductive holes to project a plurality of light spots on the projection board.

[0006] The circuit board to be inspected is placed on the LED light board. The light emitted by the LED light board illuminates the circuit board to be inspected. Part of the light can pass through the via holes and form clear light spots on the projection board. The number, shape and position of these light spots can accurately reflect the actual situation of the via holes on the circuit board. The CCD camera can quickly capture the light spot image on the projection board, and the image processing system can analyze and judge it. It can detect whether the via hole is blocked by ink and detect abnormalities in time to ensure the quality of the circuit board, greatly shorten the inspection time, and improve the inspection efficiency and reliability of the inspection results.

[0007] Preferably, a groove is dug on the upper surface of the base, and the LED light board is arranged at the bottom of the groove.

[0008] By digging a groove on the upper surface of the base and placing the LED light board at the bottom of the groove, this design not only enhances the stability of the LED light board, making it less susceptible to interference from the external environment, but also makes the structure of the entire fixture more compact and beautiful. In addition, the groove design also facilitates the installation and removal of the LED light board, providing convenience for subsequent maintenance and replacement.

[0009] Preferably, the side wall of the groove includes an inclined wall located at the upper part, and a vertical wall located at the lower part and connected to the inclined wall, and the circuit board to be tested is inserted into the vertical wall.

[0010] The side wall design of the groove adopts a combination of an upper inclined wall and a lower vertical wall. This design allows the circuit board to be easily inserted into the vertical wall for stable placement. The design of the inclined wall further enhances the convenience of placing the circuit board, making it easier for the circuit board to be accurately placed in the groove.

[0011] Preferably, a projection screen is connected to the lower surface of the projection plate, and the light spot is projected onto the projection screen.

[0012] The design of the projection screen connected to the lower surface of the projection board allows the light spot to be projected clearly on the screen, which is convenient for observation and recording. The existence of the projection screen not only enhances the contrast of the light spot, making the test results more intuitive, but also protects the projection board from damage and prolongs the service life of the fixture.

[0013] Preferably, the projection board is slidably connected to a support column, a slide rail is provided on the support column, and the projection board is connected to the slide rail.

[0014] The projection board and the support column are connected by sliding and equipped with slide rails, so that the height and angle of the projection board can be fine-tuned. This design not only improves the flexibility of the fixture, so that it can adapt to the detection needs of circuit boards of different specifications and types, but also makes the position adjustment of the projection board more accurate and convenient. By sliding the projection board, the projection position of the light spot on the projection screen can be ensured to be accurate, thereby improving the accuracy of the detection.

[0015] Preferably, the CCD camera is slidably connected to the support column, and the CCD camera is connected to the slide rail and is located below the projection board.

[0016] The CCD camera is also slidably connected to the support column and is located below the projection board. This design allows the camera to move with the projection board, ensuring that the camera can always accurately aim at the light spot on the projection screen to shoot. This flexible connection method not only improves the camera's shooting effect, but also makes the entire inspection process more efficient and smooth.

[0017] Preferably, the LED light board has a rectangular shape, the length of the LED light board is greater than the length of the circuit board to be detected, and the width of the LED light board is greater than the width of the circuit board to be detected.

[0018] The LED light board is rectangular in shape, with its length and width both larger than the size of the circuit board to be inspected. This design ensures that the circuit board can be fully and evenly illuminated when placed on the LED light board. The large size of the LED light board also allows light to better penetrate the vias of the circuit board, forming a clear light spot, thereby improving the accuracy and reliability of detection.

[0019] Preferably, it also includes an anti-light leakage frame, which covers the edge of the circuit board to be inspected to prevent the LED light board from irradiating the projection board from the edge of the circuit board to be inspected.

[0020] The added anti-light leakage frame is cleverly designed, covering the edge of the circuit board to be inspected, effectively preventing the light of the LED light board from shining from the edge of the circuit board to the projection board. This design not only improves the clarity of the light spot, reduces the interference caused by light leakage, but also enhances the accuracy of detection.

[0021] Preferably, the anti-light leakage frame is connected to the slide rail and is located below the CCD camera.

[0022] The anti-light leakage frame is connected to the slide rail and is located below the CCD camera. This design allows the position of the anti-light leakage frame to be adjusted as the projection board and camera move, thereby ensuring that light leakage can be effectively prevented in different inspection scenarios. This flexibility enables the fixture to adapt to more types of circuit board inspections and expands the scope of application of the fixture.

[0023] Preferably, the CCD camera is arranged at an angle.

[0024] The tilt setting of the CCD camera is also a very practical improvement. By adjusting the tilt angle of the camera, the spot image on the projection board can be better captured, especially when inspecting certain special angles or positions of the circuit board. The tilted camera can provide a more comprehensive perspective to ensure the comprehensiveness and accuracy of the inspection results.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] The utility model of the circuit board ink hole detection jig places the circuit board to be detected on the LED light board, and the light emitted by the LED light board illuminates the circuit board to be detected, and part of the light can pass through the via hole and form a clear light spot on the projection board. The number, shape and position of these light spots can accurately reflect the actual situation of the circuit board via hole. The CCD camera can quickly capture the light spot image on the projection board, and the image processing system can analyze and judge whether the via hole is blocked by ink, and abnormalities can be detected in time to ensure the quality of the circuit board, greatly shorten the detection time, and improve the detection efficiency and reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a structural diagram of an ink inlet hole detection fixture for a circuit board according to an embodiment of the utility model. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0031] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0033] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0034] The present embodiment provides an ink hole detection jig for a circuit board, comprising a base 10, an LED light board 20 arranged on the base 10, a support column 30 connected to the base 10, a projection board 40 connected to the support column 30 and placed above the base 10, and a CCD camera 70 arranged on the support column 30 and shooting toward the projection board 40. The circuit board to be inspected is placed on the LED light board 20, and the LED light board 20 illuminates the circuit board to be inspected and passes through the conductive holes to project a plurality of light spots on the projection board 40.

[0035] The circuit board to be inspected is placed on the LED light board 20, and the light emitted by the LED light board 20 illuminates the circuit board to be inspected. Part of the light can pass through the via holes and form clear light spots on the projection board 40. The number, shape and position of these light spots can accurately reflect the actual situation of the via holes of the circuit board. The CCD camera 70 can quickly capture the light spot image on the projection board 40, and the image processing system can analyze and judge whether the via hole is blocked by ink, and detect abnormalities in time to ensure the quality of the circuit board, greatly shorten the detection time, and improve the detection efficiency and reliability of the detection results.

[0036] In this embodiment, a groove 50 is formed on the upper surface of the base 10 , and the LED light board 20 is disposed at the bottom of the groove 50 .

[0037] By digging a groove 50 on the upper surface of the base 10 and placing the LED light board 20 at the bottom of the groove 50, this design not only enhances the stability of the LED light board 20, making it less susceptible to interference from the external environment, but also makes the structure of the entire fixture more compact and beautiful. In addition, the design of the groove 50 also facilitates the installation and removal of the LED light board 20, providing convenience for subsequent maintenance and replacement.

[0038] In this embodiment, the side wall of the groove 50 includes an inclined wall 51 at the upper portion and a vertical wall 52 at the lower portion and connected to the inclined wall 51 , and the circuit board to be tested is inserted into the vertical wall 52 .

[0039] The side wall design of the groove 50 adopts a combination of an upper inclined wall 51 and a lower vertical wall 52. This design allows the circuit board to be easily inserted into the vertical wall 52 for stable placement, and the design of the inclined wall 51 further enhances the convenience of placing the circuit board, making it easier for the circuit board to be accurately placed in the groove 50.

[0040] In this embodiment, a projection screen is connected to the lower surface of the projection plate 40 , and the light spot is projected onto the projection screen.

[0041] The design of the projection screen connected to the lower surface of the projection board 40 enables the light spot to be clearly projected on the screen, which is convenient for observation and recording. The presence of the projection screen not only enhances the contrast of the light spot, making the detection results more intuitive, but also protects the projection board 40 from damage, thereby extending the service life of the fixture.

[0042] In this embodiment, the projection board 40 is slidably connected to the support column 30 , and a slide rail is disposed on the support column 30 , and the projection board 40 is connected to the slide rail.

[0043] The projection board 40 and the support column 30 are connected by sliding and equipped with slide rails, so that the height and angle of the projection board 40 can be fine-tuned. This design not only improves the flexibility of the fixture, so that it can adapt to the detection needs of circuit boards of different specifications and types, but also makes the position adjustment of the projection board 40 more accurate and convenient. By sliding the projection board 40, the projection position of the light spot on the projection screen can be ensured to be accurate, thereby improving the accuracy of the detection.

[0044] In this embodiment, the CCD camera 70 is slidably connected to the support column 30 , and the CCD camera 70 is connected to the slide rail and is located below the projection board 40 .

[0045] The CCD camera 70 is also slidably connected to the support column 30 and is located below the projection board 40. This design allows the camera to move with the projection board 40, ensuring that the camera can always accurately aim at the light spot on the projection screen for shooting. This flexible connection method not only improves the camera's shooting effect, but also makes the entire detection process more efficient and smooth.

[0046] In this embodiment, the LED light board 20 has a rectangular shape, the length of the LED light board 20 is greater than the length of the circuit board to be detected, and the width of the LED light board 20 is greater than the width of the circuit board to be detected.

[0047] The LED light board 20 is rectangular in shape, and its length and width are larger than the size of the circuit board to be inspected. This design ensures that the circuit board can be fully and evenly illuminated when placed on the LED light board 20. The large size design of the LED light board 20 also allows light to better penetrate the conductive holes of the circuit board to form a clear light spot, thereby improving the accuracy and reliability of detection.

[0048] In this embodiment, a light leakage prevention frame 60 is further included. The light leakage prevention frame 60 covers the edge of the circuit board to be inspected to prevent the LED light board 20 from irradiating the projection board 40 from the edge of the circuit board to be inspected.

[0049] The added anti-light leakage frame 60 is cleverly designed, covering the edge of the circuit board to be detected, effectively preventing the light of the LED light board 20 from irradiating the projection board 40 from the edge of the circuit board. This design not only improves the clarity of the light spot, reduces the interference caused by light leakage, but also enhances the accuracy of detection.

[0050] In this embodiment, the anti-light leakage frame 60 is connected to the slide rail and is located below the CCD camera 70 .

[0051] The anti-light leakage frame 60 is connected to the slide rail and is located below the CCD camera 70. This design allows the position of the anti-light leakage frame 60 to be adjusted as the projection board 40 and the camera move, thereby ensuring that light leakage can be effectively prevented in different detection scenarios. This flexibility enables the fixture to adapt to more types of circuit board detection and improves the scope of application of the fixture.

[0052] In this embodiment, the CCD camera 70 is disposed at an angle.

[0053] The tilt setting of the CCD camera 70 is also a very practical improvement. By adjusting the tilt angle of the camera, the spot image on the projection board 40 can be better captured, especially when inspecting certain special angles or positions of the circuit board, the tilted camera can provide a more comprehensive viewing angle to ensure the comprehensiveness and accuracy of the inspection results.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board ink hole detection jig, characterized in that: The device comprises a base, an LED light board arranged on the base, a support column connected to the base, a projection board connected to the support column and placed above the base, and a CCD camera arranged on the support column and shooting toward the projection board. The circuit board to be inspected is placed on the LED light board, and the LED light board illuminates the circuit board to be inspected and passes through the conducting holes to project a number of light spots on the projection board.

2. The ink inlet detection jig for a circuit board according to claim 1, characterized in that: A groove is dug on the upper surface of the base, and the LED light board is arranged at the bottom of the groove.

3. The ink inlet detection jig for a circuit board according to claim 2, characterized in that: The side wall of the groove includes an inclined wall at the upper part and a vertical wall at the lower part and connected to the inclined wall, and the circuit board to be tested is inserted into the vertical wall.

4. The ink hole detection jig for circuit board according to claim 3, characterized in that: The lower surface of the projection plate is connected with a projection screen, and the light spot is projected onto the projection screen.

5. The ink hole detection jig for circuit board according to claim 4, characterized in that: The projection board is slidably connected to the support column, a slide rail is arranged on the support column, and the projection board is connected to the slide rail.

6. The ink hole detection jig for circuit board according to claim 5, characterized in that: The CCD camera is slidably connected to the support column, and the CCD camera is connected to the slide rail and is located below the projection board.

7. The ink hole detection jig for a circuit board according to claim 6, characterized in that: The LED light board has a rectangular shape, the length of the LED light board is greater than the length of the circuit board to be detected, and the width of the LED light board is greater than the width of the circuit board to be detected.

8. The ink hole detection jig for a circuit board according to claim 7, characterized in that: It also includes an anti-light leakage frame, which covers the edge of the circuit board to be inspected to prevent the LED light board from irradiating the projection board from the edge of the circuit board to be inspected.

9. The ink hole detection jig for a circuit board according to claim 8, characterized in that: The anti-light leakage frame is connected to the slide rail and is located below the CCD camera.

10. The ink hole detection jig for a circuit board according to claim 9, characterized in that: The CCD camera is set to tilt.

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