A circuit board resin plugging detection device

Abstract

This utility model relates to the field of circuit board testing technology, specifically a circuit board resin plugging detection device, including an operating table and an adjustment component disposed on its top. The adjustment component consists of a material placement component and a detection component. The material placement component includes a rotating roller rotatably mounted on the top of the operating table. The top of the rotating roller is equipped with a detection platform and two supporting components. A first toothed disc is fixed to the rear side of the rotating roller. A second toothed disc meshes with the outer wall of the first toothed disc. The second toothed disc has a movable groove, and a threaded post fixed to the operating table passes through the movable groove. This application controls the rotating roller to rotate clockwise, causing the circuit board and the detection platform to rotate and adjust their angle. At this time, the second toothed disc rotates counterclockwise synchronously. After the detection platform is adjusted to the required angle, the locking nut is controlled to rotate outside the threaded post and fit tightly against the second toothed disc, restricting the rotation of the second toothed disc and fixing the position of the detection platform.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically to a circuit board resin plugging detection device. Background Technology

[0002] During the manufacturing process of a circuit board, the presence of through holes on its surface can affect the flatness of the circuit board surface. In this case, resin plugging is often used to improve the surface flatness and protect the walls of the through holes. After the resin plugging is completed, testing equipment is often used to inspect it (such as checking for cracks in the resin plugged area) to ensure the performance and reliability of the circuit board in subsequent use.

[0003] Some existing testing devices require the use of traditional lead screw modules to control the translational movement of the circuit board during the testing process to test each plug hole on the circuit board. However, this translational movement method is difficult to adapt to the special plug hole testing requirements of inclined holes (such as 60-degree inclined through holes) or irregularly shaped circuit boards, and needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide a circuit board resin plugging detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit board resin plugging detection device, comprising an operating table and an adjustment assembly disposed at its top. The adjustment assembly consists of a material placement component and a detection component. The material placement component includes a rotating roller rotatably mounted at the top of the operating table. A detection table and two supporting components are mounted at the top of the rotating roller. A first toothed disc is fixed to the rear side of the rotating roller. A second toothed disc meshes with the outer wall of the first toothed disc. A movable groove is formed on the second toothed disc. A threaded post fixed to the operating table passes through the movable groove. A locking nut for fixing the position of the second toothed disc is fitted on the outer wall of the threaded post. After the detection table is rotated to the target angle by the rotating roller, the rotation of the second toothed disc is restricted by tightening the locking nut to fix the position of the detection table. The detection component includes a mounting platform. A roughness sensor for detection is mounted at the bottom of the mounting platform. The mounting platform is rotatably mounted at the top of the operating table by four support plates and its free rotation is restricted by the supporting components.

[0006] Preferably, the supporting member includes a T-shaped plate fixed to the top of the rotating roller. The left and right sides of the horizontal head of the T-shaped plate are fixed with fixing plates. The top of each fixing plate is provided with an L-shaped limiting plate with adjustable height. The L-shaped limiting plate abuts against the supporting plate to restrict its free rotation. The side wall of each fixing plate is provided with a locking screw for locking the L-shaped limiting plate.

[0007] Preferably, clamps for clamping circuit boards are provided on both the front and rear sides of the testing station.

[0008] Preferably, movable grooves are provided on both the front and rear side walls of the testing platform, and the inner walls of the movable grooves are connected to the clamping plates by springs. The clamping plates move towards the center of the testing platform by the contraction of the springs.

[0009] Preferably, the top of each of the fixed plates is provided with a lifting groove for the vertical lifting of the L-shaped limiting plate.

[0010] Preferably, the side wall of the L-shaped limiting plate is provided with several threaded grooves that are adapted to the locking screw at equal intervals along the longitudinal direction.

[0011] Preferably, both clamps are U-shaped, and a rubber pad is provided on one side of each clamp that holds the circuit board.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Control the rotating roller to rotate clockwise to rotate the circuit board and the test table to adjust the angle. At this time, the second toothed plate rotates counterclockwise in sync. After the test table is adjusted to the required angle, control the locking nut to rotate outside the threaded post and fit tightly against the second toothed plate to limit the rotation of the second toothed plate and fix the position of the test table. This is used to meet the special hole plugging test requirements of circuit boards with oblique holes or irregular shapes.

[0014] 2. Control the support plate to rotate to the required position according to the tilt angle required by the mounting platform and roughness sensor, control the L-shaped limit plate to move upward and abut against the support plate, and fix the position of the L-shaped limit plate by locking screw to restrict the support plate from continuing to rotate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this application;

[0016] Figure 2 This is a schematic diagram of the structure of the test piece in this application;

[0017] Figure 3 This is a schematic diagram of the material placement component structure in this application;

[0018] Figure 4 This is a schematic diagram of the back structure of the operating table in this application;

[0019] Figure 5 This is a schematic diagram of the second toothed disc structure of this application.

[0020] In the diagram: 1. Operating table; 2. Rotating roller; 3. Detection table; 4. Clamping plate; 5. First gear plate; 6. Second gear plate; 7. Threaded post; 8. Locking nut; 9. T-shaped plate; 10. Fixing plate; 11. L-shaped limit plate; 12. Locking screw; 13. Support plate; 14. Mounting table; 15. Roughness sensor. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a circuit board resin plugging detection device, including an operating table 1 and an adjustment component disposed at its top. The adjustment component consists of a feeding component and a detection component. The feeding component includes a rotating roller 2. The top of the operating table 1 is provided with a groove. The rotating roller 2 passes through the groove and extends to the rear back of the operating table 1, so that the rotating roller 2 is rotatably mounted on the operating table 1. The top of the rotating roller 2 is mounted with a detection table 3 and two supporting components. The front and rear sides of the detection table 3 are provided with clamping plates 4 for clamping circuit boards. Both clamping plates 4 are U-shaped, and a rubber pad is provided on one side of the clamping plate 4 that holds the circuit board. Movable grooves are provided on the front and rear side walls of the detection table 3. The inner wall of the movable groove is connected to the clamping plate 4 by a spring. The spring contraction causes the clamping plate 4 to move towards the center position of the detection table 3. The detection table 3 is welded and fixed to the rotating roller 1. A first toothed disc 5 is welded and fixed to the top of the rotating roller 2 and the back of the rotating roller 2. A second toothed disc 6 is engaged on the outer wall of the first toothed disc 5. The front end of the second toothed disc 6 is rotatably mounted on the operating table 1 via a bearing. A movable groove is provided on the second toothed disc 6. A threaded post 7, which is welded and fixed to the operating table 1, passes through the movable groove. The movable groove prevents the second toothed disc 6 from being unable to rotate due to the fixed position of the threaded post 7. A locking nut 8 is fitted on the outer wall of the threaded post 7 to fix the position of the second toothed disc 6. When the rotating roller 2 rotates clockwise, it drives the first toothed disc 5 and the detection table 3 to rotate and adjust the angle. At this time, the second toothed disc 6 rotates counterclockwise in sync. After the detection table 3 is adjusted to the required angle, the locking nut 8 is controlled to rotate outside the threaded post 7 and fit tightly against the second toothed disc 6. The rotation of the second toothed disc 6 is restricted, thereby fixing the position of the detection table 3.

[0023] The testing component includes a mounting platform 14. A roughness sensor 15 for testing resin-filled holes in a circuit board is mounted on the bottom of the mounting platform 14. The roughness sensor 15 is a Taylor-Hopson series sensor (such as the 120 / 150 series), commonly used in high-end profilometers, which can detect micron-level surface roughness (parameters such as Ra). It is suitable for microscopic morphology analysis of the hole wall after resin plugging. This is a common existing technology and will not be described in detail here. Four support plates 13 are set below the mounting platform 14. The four support plates 13 are connected to the mounting platform 14 and the operating table 1 by hinges, which facilitates the adjustment of the angle of the mounting platform 14 and the roughness sensor 15 during use.

[0024] The supporting component includes a T-shaped plate 9 welded and fixed to the top of the rotating roller 2. Fixing plates 10 are welded and fixed to both sides of the horizontal head of the T-shaped plate 9. Each fixing plate 10 has a lifting groove at its top. An L-shaped limiting plate 11 is movably installed in each lifting groove. Each fixing plate 10 has a locking screw 12 for locking the L-shaped limiting plate 11 on its side wall. The L-shaped limiting plate 11 has several threaded grooves that are adapted to the locking screw 12 and are equidistantly arranged longitudinally on its side wall. The support plate 13 is controlled to rotate to the required position according to the tilt angle required by the mounting platform 14 and the roughness sensor 15. The L-shaped limiting plate 11 is controlled to move upward and abut against the support plate 13. The position of the L-shaped limiting plate 11 is fixed by the locking screw 12, which restricts the support plate 13 from continuing to rotate.

[0025] Working principle: In use, the roughness sensor 15 is activated by an external power supply. The circuit board is placed on the top of the detection table 3 and clamped and fixed by the two clamps 4. The rotating roller 2 is controlled to rotate clockwise to rotate the circuit board and the detection table 3 to adjust the angle. At this time, the second gear plate 6 rotates counterclockwise in sync. After the detection table 3 is adjusted to the required angle, the locking nut 8 is controlled to rotate outside the threaded post 7 and fit tightly against the second gear plate 6, restricting the rotation of the second gear plate 6 and fixing the position of the detection table 3. Then, according to the required tilt angle of the mounting table 14 and the roughness sensor 15, the support plate 13 is controlled to rotate to the required position. The L-shaped limit plate 11 is controlled to move upward and abut against the support plate 13. The position of the L-shaped limit plate 11 is fixed by the locking screw 12, restricting the support plate 13 from continuing to rotate.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. For example, the welding described in the specific embodiments of the present invention is merely a connection method for keeping two structures fixed. Fixing by other methods such as riveting, interference fit, etc., is merely a variation of this embodiment. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board resin plugging detection device, comprising an operating table and an adjustment assembly disposed at its top, characterized in that: The adjustment assembly consists of a feeding component and a detection component; The material placement component includes a rotating roller rotatably mounted on the top of the operating table. A detection table and two support members are mounted on the top of the rotating roller. A first toothed disc is fixed to the rear side of the rotating roller. A second toothed disc meshes with the outer wall of the first toothed disc. A movable groove is opened on the second toothed disc. A threaded post fixed to the operating table passes through the movable groove. A locking nut for fixing the position of the second toothed disc is fitted on the outer wall of the threaded post. After the detection table is rotated to the target angle by the rotating roller, the position of the detection table is fixed by tightening the locking nut to restrict the rotation of the second toothed disc. The testing component includes a mounting platform, on the bottom of which a roughness sensor for testing is mounted. The mounting platform is rotatably mounted on the top of the operating table via four support plates, and its free rotation is restricted by the supporting members.

2. The circuit board via resin plug detection apparatus of claim 1, wherein: The supporting component includes a T-shaped plate fixed to the top of the rotating roller. The left and right sides of the horizontal head of the T-shaped plate are fixed with fixing plates. The top of each fixing plate is provided with an L-shaped limiting plate with adjustable height. The L-shaped limiting plate abuts against the support plate to restrict its free rotation. The side walls of each fixing plate are provided with locking screws for locking the L-shaped limiting plate.

3. The circuit board via resin plug detection apparatus of claim 1, wherein: The testing station is equipped with clamps on both the front and rear sides for clamping circuit boards.

4. The circuit board via resin plug detection apparatus of claim 3, wherein: The front and rear side walls of the testing platform are provided with movable grooves. The inner walls of the movable grooves are connected to the clamping plates by springs. The clamping plates move towards the center of the testing platform by the contraction of the springs.

5. The circuit board via resin plug detection apparatus of claim 2, wherein: The top of each fixed plate is provided with a lifting groove for the vertical lifting of the L-shaped limiting plate.

6. The circuit board resin plugging detection device according to claim 2, characterized in that: The L-shaped limiting plate has several threaded grooves that are equidistant from each other on its side wall and are adapted to the locking screw.

7. The circuit board via resin plug detection apparatus of claim 3, wherein: Both clamps are U-shaped, and each clamp has a rubber pad on one side of the circuit board it holds.

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