Blockage detection jig for via hole of circuit board

Abstract

The utility model relates to a circuit board via hole blocking detection tool, comprising a pedestal, an LED lamp panel arranged on the pedestal, a column connected with the pedestal, and a CCD camera connected with the column and placed above the pedestal, four corner areas of the edge of the LED lamp panel are provided with support columns, a circuit board to be detected is placed on the support columns and suspended above the LED lamp panel, and the LED lamp panel is provided with an LED light source. And the LED lamp panel irradiates the circuit board to be detected and penetrates through the via hole to irradiate upwards. The utility model provides a circuit board via hole blocking detection tool, which is high in detection accuracy, can greatly improve detection efficiency, and reduces manual detection cost and errors.

Description

Technical Field

[0001] The utility model relates to the field of circuit boards, and in particular to a blockage detection tool for a through hole of a circuit board. Background Art

[0002] Traditional circuit board via hole ink detection, as recorded in patent document 2019213605180, has always been carried out using the pin insertion method. However, in actual applications, we deeply feel that the alignment process of the pin and the via hole is extremely cumbersome and technically difficult. This inaccuracy in alignment often leads to deviations in the test results, and incorrectly determines that there is ink in the via hole, which seriously affects the accuracy of the test. In view of this, we urgently need to make in-depth improvements and optimizations to this detection method to improve the accuracy and reliability of the detection and ensure that the quality of the circuit board is more effectively guaranteed. Utility Model Content

[0003] In view of this, the utility model provides a circuit board through-hole blockage detection jig, the light emitted by the LED light board can directly illuminate the through-hole of the circuit board to be detected, when the light passes through the through-hole, if the hole is unobstructed, the light will be able to pass smoothly and be captured by the CCD camera above. On the contrary, if the through-hole is blocked, the light will be blocked, forming an obvious shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve the detection efficiency and reduce the cost and error of manual detection.

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

[0005] A circuit board through-hole blockage detection jig comprises a base, an LED light board arranged on the base, a column connected to the base, and a CCD camera connected to the column and placed above the base. Support columns are arranged at the four corners of the edge of the LED light board. The circuit board to be detected is placed on the support columns and suspended above the LED light board. The LED light board illuminates the circuit board to be detected and illuminates upward through the through-hole.

[0006] It has significant advantages in detection efficiency. The light emitted by the LED light board can directly illuminate the via holes of the circuit board to be detected. When the light passes through the via holes, if the holes are unobstructed, the light will be able to pass smoothly and be captured by the CCD camera above. On the contrary, if the via holes are blocked, the light will be blocked, forming a clear shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve detection efficiency and reduce the cost and error of manual detection. The setting of the support column allows the circuit board to be detected to be stably suspended above the LED light board, which not only avoids direct contact between the circuit board and the light board, but also ensures that the light can pass through the via holes smoothly.

[0007] Preferably, the support column includes a main column connected to the base, a magnet arranged on the top of the main column, and a magnetic block magnetically connected to the magnet, and the magnetic block presses the circuit board to be tested against the main column from top to bottom.

[0008] The support column combines the main column, magnets, and magnetic blocks to form a stable and flexible structure. The main column, which is closely connected to the base, not only provides a stable foundation for the entire device, but also ensures that the circuit board to be tested can be evenly and strongly supported.

[0009] Preferably, the lower surface of the magnetic block is provided with a first soft glue, the upper surface of the main column is provided with a second soft glue, and the upper surface of the circuit board to be tested is in contact with the first soft glue, and the lower surface is in contact with the second soft glue.

[0010] The magnet is set at the top of the main column and forms a magnetic connection with the magnetic block. This connection method is convenient and fast. When the magnetic block presses the circuit board to be tested from top to bottom, the magnetic adsorption effect can ensure the close connection between the circuit board and the main column, effectively preventing the circuit board from shaking or shifting during the detection process.

[0011] Preferably, a groove is dug on the upper surface of the base, and the LED light panel and the main column are arranged in the groove.

[0012] The lower surface of the magnetic block and the upper surface of the main column are provided with a first soft glue and a second soft glue respectively. This design not only increases the friction between the circuit board and the support column, making the circuit board more firmly attached to the support column, but also the material of the soft glue can effectively reduce the wear and scratches on the surface of the circuit board, protecting the integrity of the circuit board.

[0013] Preferably, the main column has a cylindrical shape, and the magnetic block has a pancake shape.

[0014] When the main column and magnetic block are designed in a cylindrical shape, this rounded shape is not only beautiful, but also can reduce friction when in contact with the circuit board, avoiding unnecessary damage to the circuit board. At the same time, the cylindrical structure also has high stability and can withstand greater pressure, ensuring the stable fixation of the circuit board during the detection process.

[0015] Preferably, the main column has a rectangular parallelepiped shape, and the magnetic block has a rectangular parallelepiped shape.

[0016] If the main column and magnetic block are designed to be rectangular, more attention will be paid to the stability of the structure and the utilization of space. The rectangular structure makes the support column more stable on the base and not easy to fall over. At the same time, the rectangular shape is easier to match with the groove of the base, realizing the rational use of space and making the whole device more compact and beautiful.

[0017] Preferably, the main column has a triangular column shape, and the magnetic block has a triangular column shape.

[0018] The triangular prism design combines stability and aesthetics. The triangular prism has high structural stability and can withstand large external forces, ensuring the stable fixation of the circuit board during the inspection process. At the same time, the shape of the triangular prism also has a certain aesthetic value, making the entire device more unique and novel visually.

[0019] Preferably, the four corners of the edge of the LED light panel are provided with avoidance gaps, and the main column passes through the avoidance gaps and is connected to the upper surface of the groove.

[0020] The four corners of the LED light panel are provided with avoidance gaps, which not only allow the main column to pass smoothly, but also effectively avoid interference between the LED light panel and the main column, ensuring the uniform distribution and illumination effect of the light source. At the same time, the main column is connected to the upper surface of the groove to achieve a stable combination with the base, providing reliable support for the entire device and improving the stability and durability of the device.

[0021] Preferably, the main column and the base are detachably connected via screws.

[0022] The detachable connection design between the main column and the base is realized by screws, making the entire device more flexible and maintainable. This design is convenient for users to disassemble and assemble according to actual needs, and it is also convenient for cleaning and maintenance of the base and main column, extending the service life of the device.

[0023] Preferably, the column is provided with a slide rail, and the CCD camera is slidably connected to the slide rail.

[0024] The slide rails set on the columns allow the CCD camera to slide easily on the rails, realizing flexible inspection of different areas of the circuit board. This design not only improves the inspection efficiency, but also ensures the accuracy and reliability of the inspection results. At the same time, the introduction of the slide rails also brings more possibilities to the device, such as adjusting the position of the CCD camera as needed to adapt to circuit boards of different sizes and shapes.

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

[0026] The utility model of the blockage detection jig for the circuit board via hole has a significant advantage in detection efficiency. The light emitted by the LED light board can directly illuminate the via hole of the circuit board to be detected. When the light passes through the via hole, if the hole is unobstructed, the light will be able to pass smoothly and be captured by the CCD camera above. On the contrary, if the via hole is blocked, the light will be blocked, forming a clear shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve the detection efficiency and reduce the cost and error of manual detection. The setting of the support column allows the circuit board to be detected to be stably suspended above the LED light board, which not only avoids direct contact between the circuit board and the light board, but also ensures that the light can pass through the via hole smoothly. 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 a circuit board via blockage detection fixture according to Example 1 of the utility model.

[0029] Figure 2 This is a structural diagram of a circuit board through-hole blockage detection fixture according to Example 2 of the utility model.

[0030] Figure 3 This is a structural diagram of a circuit board via blockage detection fixture according to Example 3 of the utility model. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The technical solution in this application will be described below in conjunction with the accompanying drawings. Example

[0036] The present embodiment provides a circuit board via blockage detection jig, comprising a base 10, an LED light board 20 arranged on the base 10, a column 30 connected to the base 10, and a CCD camera 40 connected to the column 30 and placed above the base 10. Support columns 50 are arranged at the four corners of the edge of the LED light board 20. The circuit board to be detected is placed on the support columns 50 and suspended above the LED light board 20. The LED light board 20 illuminates the circuit board to be detected and illuminates upward through the via.

[0037] It has significant advantages in detection efficiency. The light emitted by the LED light board 20 can directly illuminate the via holes of the circuit board to be detected. When the light passes through the via holes, if the holes are unobstructed, the light will be able to pass smoothly and be captured by the CCD camera 40 above. On the contrary, if the via holes are blocked, the light will be blocked, forming a clear shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve the detection efficiency and reduce the cost and error of manual detection. The setting of the support column 50 allows the circuit board to be detected to be stably suspended above the LED light board 20, which not only avoids direct contact between the circuit board and the light board, but also ensures that the light can pass through the via holes smoothly.

[0038] In this embodiment, the support column 50 includes a main column 51 connected to the base 10, a magnet 52 arranged on the top of the main column 51, and a magnetic block 53 magnetically connected to the magnet 52. The magnetic block 53 presses the circuit board to be tested against the main column 51 from top to bottom.

[0039] The support column 50 combines multiple components such as the main column 51, the magnet 52 and the magnetic block 53 to form a stable and flexible structure. The main column 51, which is closely connected to the base 10, not only provides a stable foundation for the entire device, but also ensures that the circuit board to be tested can be evenly and strongly supported.

[0040] In this embodiment, the lower surface of the magnetic block 53 is provided with a first soft glue, the upper surface of the main column 51 is provided with a second soft glue, and the upper surface of the circuit board to be tested is in contact with the first soft glue, and the lower surface is in contact with the second soft glue.

[0041] The magnet 52 is arranged at the top of the main column 51, and forms a magnetic connection with the magnetic block 53. This connection method is convenient and fast. When the magnetic block 53 presses the circuit board to be tested from top to bottom, the circuit board and the main column 51 can be tightly combined through the adsorption effect of magnetic force, which effectively prevents the circuit board from shaking or shifting during the detection process.

[0042] In this embodiment, a groove 11 is formed on the upper surface of the base 10 , and the LED light board 20 and the main column 51 are disposed in the groove 11 .

[0043] The lower surface of the magnetic block 53 and the upper surface of the main column 51 are respectively provided with a first soft glue and a second soft glue. This design not only increases the friction between the circuit board and the support column 50, making the circuit board more firmly attached to the support column 50, but also the material of the soft glue can effectively reduce the wear and scratches on the surface of the circuit board, protecting the integrity of the circuit board.

[0044] In this embodiment, the main column 51 is cylindrical in shape, and the magnetic block 53 is pancake-shaped in shape.

[0045] The main column 51 and the magnetic block 53 are cylindrical in design. This rounded shape is not only beautiful, but also can reduce friction when in contact with the circuit board, avoiding unnecessary damage to the circuit board. At the same time, the cylindrical structure also has high stability and can withstand greater pressure, ensuring the stable fixation of the circuit board during the detection process.

[0046] In this embodiment, avoidance notches 21 are provided at the four corners of the edge of the LED light board 20 , and the main column 51 passes through the avoidance notches 21 and is connected to the upper surface of the groove 11 .

[0047] The four corners of the edge of the LED light board 20 are provided with avoidance notches 21, which not only allow the main column 51 to pass smoothly, but also effectively avoid interference between the LED light board 20 and the main column 51, ensuring uniform distribution of light sources and irradiation effects. At the same time, the main column 51 is connected to the upper surface of the groove 11 to achieve a stable combination with the base 10, providing reliable support for the entire device and improving the stability and durability of the device.

[0048] In this embodiment, the main column 51 and the base 10 are detachably connected by screws.

[0049] The detachable connection design between the main column 51 and the base 10 is realized by screws, making the entire device more flexible and maintainable. This design is convenient for users to disassemble and assemble according to actual needs, and it is also convenient to clean and maintain the base 10 and the main column 51, extending the service life of the device.

[0050] In this embodiment, the column 30 is provided with a slide rail, and the CCD camera 40 is slidably connected to the slide rail.

[0051] The slide rails provided on the uprights 30 enable the CCD camera 40 to slide easily on the slide rails, thus realizing flexible detection of different areas of the circuit board. This design not only improves the detection efficiency, but also ensures the accuracy and reliability of the detection results. At the same time, the introduction of the slide rails also brings more possibilities to the device, for example, the position of the CCD camera 40 can be adjusted as needed to adapt to circuit boards of different sizes and shapes. Example

[0052] The present embodiment provides a circuit board via blockage detection jig, comprising a base 10, an LED light board 20 arranged on the base 10, a column 30 connected to the base 10, and a CCD camera 40 connected to the column 30 and placed above the base 10. Support columns 50 are arranged at the four corners of the edge of the LED light board 20. The circuit board to be detected is placed on the support columns 50 and suspended above the LED light board 20. The LED light board 20 illuminates the circuit board to be detected and illuminates upward through the via.

[0053] It has significant advantages in detection efficiency. The light emitted by the LED light board 20 can directly illuminate the via holes of the circuit board to be detected. When the light passes through the via holes, if the holes are unobstructed, the light will be able to pass smoothly and be captured by the CCD camera 40 above. On the contrary, if the via holes are blocked, the light will be blocked, forming a clear shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve the detection efficiency and reduce the cost and error of manual detection. The setting of the support column 50 allows the circuit board to be detected to be stably suspended above the LED light board 20, which not only avoids direct contact between the circuit board and the light board, but also ensures that the light can pass through the via holes smoothly.

[0054] In this embodiment, the support column 50 includes a main column 51 connected to the base 10, a magnet 52 arranged on the top of the main column 51, and a magnetic block 53 magnetically connected to the magnet 52. The magnetic block 53 presses the circuit board to be tested against the main column 51 from top to bottom.

[0055] The design of the support column 50 is a highlight of the entire device. It cleverly combines multiple components such as the main column 51, the magnet 52 and the magnetic block 53 to form a stable and flexible structure. The main column 51, which is closely connected to the base 10, not only provides a stable foundation for the entire device, but also ensures that the circuit board to be tested can be evenly and strongly supported.

[0056] In this embodiment, the lower surface of the magnetic block 53 is provided with a first soft glue, the upper surface of the main column 51 is provided with a second soft glue, and the upper surface of the circuit board to be tested is in contact with the first soft glue, and the lower surface is in contact with the second soft glue.

[0057] The magnet 52 is arranged at the top of the main column 51, and forms a magnetic connection with the magnetic block 53. This connection method is convenient and fast. When the magnetic block 53 presses the circuit board to be tested from top to bottom, the circuit board and the main column 51 can be tightly combined through the adsorption effect of magnetic force, which effectively prevents the circuit board from shaking or shifting during the detection process.

[0058] In this embodiment, a groove 11 is formed on the upper surface of the base 10 , and the LED light board 20 and the main column 51 are disposed in the groove 11 .

[0059] The lower surface of the magnetic block 53 and the upper surface of the main column 51 are respectively provided with a first soft glue and a second soft glue. This design not only increases the friction between the circuit board and the support column 50, making the circuit board more firmly attached to the support column 50, but also the material of the soft glue can effectively reduce the wear and scratches on the surface of the circuit board, protecting the integrity of the circuit board.

[0060] In this embodiment, the main column 51 is in the shape of a rectangular parallelepiped, and the magnetic block 53 is in the shape of a rectangular parallelepiped.

[0061] The main column 51 and the magnetic block 53 are designed to be rectangular in shape, which pays more attention to the stability of the structure and the utilization of space. The rectangular structure makes the support column 50 more stable on the base 10 and not easy to fall over. At the same time, the rectangular shape is also easier to match with the groove 11 of the base 10, realizing the rational use of space and making the whole device more compact and beautiful.

[0062] In this embodiment, avoidance notches 21 are provided at the four corners of the edge of the LED light board 20 , and the main column 51 passes through the avoidance notches 21 and is connected to the upper surface of the groove 11 .

[0063] The four corners of the edge of the LED light board 20 are provided with avoidance notches 21, which not only allow the main column 51 to pass smoothly, but also effectively avoid interference between the LED light board 20 and the main column 51, ensuring uniform distribution of light sources and irradiation effects. At the same time, the main column 51 is connected to the upper surface of the groove 11 to achieve a stable combination with the base 10, providing reliable support for the entire device and improving the stability and durability of the device.

[0064] In this embodiment, the main column 51 and the base 10 are detachably connected by screws.

[0065] The detachable connection design between the main column 51 and the base 10 is realized by screws, making the entire device more flexible and maintainable. This design is convenient for users to disassemble and assemble according to actual needs, and it is also convenient to clean and maintain the base 10 and the main column 51, extending the service life of the device.

[0066] In this embodiment, the column 30 is provided with a slide rail, and the CCD camera 40 is slidably connected to the slide rail.

[0067] The slide rails provided on the uprights 30 enable the CCD camera 40 to slide easily on the slide rails, thus realizing flexible detection of different areas of the circuit board. This design not only improves the detection efficiency, but also ensures the accuracy and reliability of the detection results. At the same time, the introduction of the slide rails also brings more possibilities to the device, for example, the position of the CCD camera 40 can be adjusted as needed to adapt to circuit boards of different sizes and shapes. Example

[0068] The present embodiment provides a circuit board via blockage detection jig, comprising a base 10, an LED light board 20 arranged on the base 10, a column 30 connected to the base 10, and a CCD camera 40 connected to the column 30 and placed above the base 10. Support columns 50 are arranged at the four corners of the edge of the LED light board 20. The circuit board to be detected is placed on the support columns 50 and suspended above the LED light board 20. The LED light board 20 illuminates the circuit board to be detected and illuminates upward through the via.

[0069] It has significant advantages in detection efficiency. The light emitted by the LED light board 20 can directly illuminate the via holes of the circuit board to be detected. When the light passes through the via holes, if the holes are unobstructed, the light will be able to pass smoothly and be captured by the CCD camera 40 above. On the contrary, if the via holes are blocked, the light will be blocked, forming a clear shadow on the camera. This optical-based detection method is not only fast and accurate, but also can greatly improve the detection efficiency and reduce the cost and error of manual detection. The setting of the support column 50 allows the circuit board to be detected to be stably suspended above the LED light board 20, which not only avoids direct contact between the circuit board and the light board, but also ensures that the light can pass through the via holes smoothly.

[0070] In this embodiment, the support column 50 includes a main column 51 connected to the base 10, a magnet 52 arranged on the top of the main column 51, and a magnetic block 53 magnetically connected to the magnet 52. The magnetic block 53 presses the circuit board to be tested against the main column 51 from top to bottom.

[0071] The design of the support column 50 is a highlight of the entire device. It cleverly combines multiple components such as the main column 51, the magnet 52 and the magnetic block 53 to form a stable and flexible structure. The main column 51, which is closely connected to the base 10, not only provides a stable foundation for the entire device, but also ensures that the circuit board to be tested can be evenly and strongly supported.

[0072] In this embodiment, the lower surface of the magnetic block 53 is provided with a first soft glue, the upper surface of the main column 51 is provided with a second soft glue, and the upper surface of the circuit board to be tested is in contact with the first soft glue, and the lower surface is in contact with the second soft glue.

[0073] The magnet 52 is arranged at the top of the main column 51, and forms a magnetic connection with the magnetic block 53. This connection method is convenient and fast. When the magnetic block 53 presses the circuit board to be tested from top to bottom, the circuit board and the main column 51 can be tightly combined through the adsorption effect of magnetic force, which effectively prevents the circuit board from shaking or shifting during the detection process.

[0074] In this embodiment, a groove 11 is formed on the upper surface of the base 10 , and the LED light board 20 and the main column 51 are disposed in the groove 11 .

[0075] The lower surface of the magnetic block 53 and the upper surface of the main column 51 are respectively provided with a first soft glue and a second soft glue. This design not only increases the friction between the circuit board and the support column 50, making the circuit board more firmly attached to the support column 50, but also the material of the soft glue can effectively reduce the wear and scratches on the surface of the circuit board, protecting the integrity of the circuit board.

[0076] In this embodiment, the main column 51 has a triangular column shape, and the magnetic block 53 has a triangular column shape.

[0077] The triangular prism design combines stability and aesthetics. The triangular prism has high structural stability and can withstand large external forces, ensuring the stable fixation of the circuit board during the inspection process. At the same time, the shape of the triangular prism also has a certain aesthetic value, making the entire device more unique and novel visually.

[0078] In this embodiment, avoidance notches 21 are provided at the four corners of the edge of the LED light board 20 , and the main column 51 passes through the avoidance notches 21 and is connected to the upper surface of the groove 11 .

[0079] The four corners of the edge of the LED light board 20 are provided with avoidance notches 21, which not only allow the main column 51 to pass smoothly, but also effectively avoid interference between the LED light board 20 and the main column 51, ensuring uniform distribution of light sources and irradiation effects. At the same time, the main column 51 is connected to the upper surface of the groove 11 to achieve a stable combination with the base 10, providing reliable support for the entire device and improving the stability and durability of the device.

[0080] In this embodiment, the main column 51 and the base 10 are detachably connected by screws.

[0081] The detachable connection design between the main column 51 and the base 10 is realized by screws, making the entire device more flexible and maintainable. This design is convenient for users to disassemble and assemble according to actual needs, and it is also convenient to clean and maintain the base 10 and the main column 51, extending the service life of the device.

[0082] In this embodiment, the column 30 is provided with a slide rail, and the CCD camera 40 is slidably connected to the slide rail.

[0083] The slide rails provided on the uprights 30 enable the CCD camera 40 to slide easily on the slide rails, thus realizing flexible detection of different areas of the circuit board. This design not only improves the detection efficiency, but also ensures the accuracy and reliability of the detection results. At the same time, the introduction of the slide rails also brings more possibilities to the device, for example, the position of the CCD camera 40 can be adjusted as needed to adapt to circuit boards of different sizes and shapes.

[0084] 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 through-hole blockage detection fixture, characterized in that: The invention comprises a base, an LED light board arranged on the base, a column connected to the base, and a CCD camera connected to the column and placed above the base. Support columns are arranged at the four corners of the edge of the LED light board. The circuit board to be inspected is placed on the support columns and suspended above the LED light board. The LED light board illuminates the circuit board to be inspected and illuminates upward through the conducting hole.

2. The circuit board through-hole blockage detection jig according to claim 1, characterized in that: The support column comprises a main column connected to the base, a magnet arranged on the top of the main column, and a magnetic block magnetically connected to the magnet, and the magnetic block presses the circuit board to be tested against the main column from top to bottom.

3. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The lower surface of the magnetic block is provided with a first soft glue, the upper surface of the main column is provided with a second soft glue, the upper surface of the circuit board to be detected is in contact with the first soft glue, and the lower surface is in contact with the second soft glue.

4. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: A groove is dug on the upper surface of the base, and the LED light panel and the main column are arranged in the groove.

5. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The main column has a cylindrical shape, and the magnetic block has a round cake shape.

6. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The main column has a rectangular parallelepiped shape, and the magnetic block has a rectangular parallelepiped shape.

7. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The main body column has a triangular column shape, and the magnetic block has a triangular column shape.

8. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The four corners of the edge of the LED light board are provided with avoidance notches, and the main body column passes through the avoidance notches and is connected to the upper surface of the groove.

9. The circuit board through-hole blockage detection jig according to claim 2, characterized in that: The main column and the base are detachably connected via screws.

10. The circuit board through-hole blockage detection jig according to claim 1, characterized in that: The column is provided with a slide rail, and the CCD camera is slidably connected to the slide rail.

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