X-ray detection device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB X-ray detection device, which comprises a detection box, a placing frame, a supporting plate, a connecting column, a supporting block, a clamping assembly and a rotating assembly, and is characterized in that the placing frame is rotatably arranged in the detection box, and the clamping assembly used for clamping PCBs with different sizes is arranged in the placing frame; wherein two groups of supporting plates are fixedly arranged in the detection box, and supporting blocks are fixedly arranged on the corresponding surfaces of the two groups of supporting plates; the other end of the connecting column is provided with a rotating assembly used for driving the containing frame to rotate and turn over. PCBs of different sizes are clamped in the placement frame through the clamping assembly, then X-ray detection is conducted on the PCBs through the detection system and the display system, after one face of each PCB is detected, a motor is started to drive a bevel gear to rotate, the bevel gear drives an inclined bevel gear to rotate through meshing, and therefore the placement frame is driven to rotate and turn over through a connecting column, and the detection efficiency is improved. And the other side of the PCB is detected, so that the convenience of PCB detection is improved.

Description

Technical Field

[0001] This utility model relates to the field of PCB board inspection technology, specifically to an X-ray inspection device for PCB boards. Background Technology

[0002] A PCB (Printed Circuit Board) is a substrate used to assemble electronic components. It achieves electrical connections between electronic components by printing copper traces on insulating material. A PCB mainly consists of a substrate, conductive layers, solder mask layers, and character layers. The substrate is typically made of fiberglass or epoxy resin, providing mechanical support and insulation. PCBs can be classified as single-sided, double-sided, and multilayer boards based on the number of conductive layers. Currently, PCBs require X-ray inspection after production. However, existing X-ray inspection devices generally can only inspect the front side of the PCB. If the solder joints on both sides of a double-sided PCB overlap, it will affect the accuracy of the inspection results. Furthermore, traditional X-ray inspection devices generally cannot flip double-sided PCBs, causing inconvenience for PCB inspection.

[0003] In the prior art, CN217404464U discloses a PCB board visual inspection device, including a machine base. The machine base is provided with a support platform for supporting PCB boards. The support platform includes a base, and a pressure plate is provided on the base. The pressure plate has an inspection groove that cooperates with the PCB board. A connector is also provided on the inspection groove that cooperates with the PCB board for connecting to a control PCB board. An operating table is also provided in conjunction with the support platform. The machine base is also provided with a display module for displaying the control content of the PCB board. Located at the display module, the machine base is also provided with a pressing piece for pressing the FPC.

[0004] The aforementioned patent can only inspect the front side of the PCB board, making it difficult to flip the double-sided PCB board, which would cause inconvenience for PCB board inspection; therefore, we need to propose an X-ray inspection device for PCB boards. Utility Model Content

[0005] The purpose of this invention is to provide an X-ray inspection device for PCB boards. A clamping assembly clamps PCB boards of different sizes inside a placement frame. Then, an inspection system and a display system perform X-ray inspection on the PCB boards. After one side of the PCB board is inspected, a motor is started to drive a bevel gear to rotate. The bevel gear meshes with a slanted bevel gear, which in turn drives the placement frame to rotate and flip, allowing inspection of the other side of the PCB board. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an X-ray inspection device for PCB boards, comprising an inspection box, a placement frame, a support plate, a connecting column, a support block, a clamping assembly, and a rotating assembly, wherein the placement frame is rotatably disposed inside the inspection box, and the placement frame is provided with a clamping assembly for clamping PCB boards of different sizes.

[0007] The detection box is equipped with two sets of support plates, and support blocks are fixedly installed on the corresponding surfaces of the two sets of support plates. A connecting column is rotatably installed inside the support block, and one end of the connecting column is fixedly connected to the placement frame.

[0008] The other end of the connecting column is provided with a rotating component for driving the placement frame to rotate and flip.

[0009] The rotating assembly includes a bevel gear, a helical bevel gear, and a lower support plate. The lower support plate is disposed on the bottom surface of the detection box. The bevel gear is rotatably disposed on the upper surface of the lower support plate. The helical bevel gear is fixedly connected to the other end of the connecting column, and the bevel gear and the helical bevel gear are meshed.

[0010] Preferably, an upper support plate is fixedly installed inside the detection box and above the bevel gear. A motor is bolted to the upper surface of the upper support plate, and a rotating column is keyed to the output end of the motor. The bottom end of the rotating column is fixedly connected to the upper surface of the bevel gear.

[0011] Preferably, a limiting ring is fixedly provided between the upper support plate and the lower support plate. The limiting ring has a through-hole on its side corresponding to the connecting column. The connecting column is rotatably disposed inside the limiting ring, and the bevel gear is located on the side of the limiting ring away from the support block.

[0012] Preferably, the lower support plate is fixedly mounted on the upper surface of the detection box by a support column, and the number of teeth on the surface of the bevel gear is half the number of teeth on the side of the slanted bevel gear.

[0013] Preferably, the clamping assembly includes clamping plates and external compression springs. Two sets of clamping plates and external compression springs are provided. The two sets of clamping plates are slidably disposed inside the placement frame. One end of the two sets of external compression springs is disposed on the opposite side of the two sets of clamping plates, and the other end of the two sets of external compression springs is fixedly connected to the inner wall of the placement frame.

[0014] Preferably, side moving blocks are fixedly provided on both sides of the two sets of clamping plates, and the inner wall of the placement frame is provided with side moving grooves corresponding to the four sets of side moving blocks.

[0015] Preferably, each of the two sets of clamping plates has two sets of inner clamping plates slidably disposed inside, and each of the two sets of inner clamping plates has an inner compression spring fixedly disposed on the opposite side, with the other end of each set of inner compression springs contacting the inner wall of the clamping plate.

[0016] Preferably, an inner moving block is fixedly provided on both sides of the inner clamping plate, and an inner moving groove corresponding to the inner moving block is opened on the inner wall of both sets of clamping plates.

[0017] Preferably, a detection system is provided at the top of the detection box and above the placement frame, and a display system is provided on the upper surface of the detection box, and the display system is electrically connected to the detection system.

[0018] Preferably, the placement frame does not contact the inner wall of the detection chamber, and the placement frame does not contact the detection system.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention uses a clamping assembly to clamp PCBs of different sizes inside a placement frame. Then, the PCBs are inspected by X-ray using a detection system and a display system. After one side of the PCB is inspected, a motor is started to drive a bevel gear to rotate. The bevel gear meshes with a slanted bevel gear to rotate, which in turn drives the placement frame to rotate and flip through a connecting column, allowing the other side of the PCB to be inspected, thus improving the convenience of PCB inspection.

[0021] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the testing box of this utility model;

[0024] Figure 3 This is an exploded view of the internal structure of the testing box of this utility model;

[0025] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0026] In the diagram: 1. Detection box; 2. Display system; 3. Placement frame; 4. Support plate; 5. Bevel gear; 6. Detection system; 7. Clamping plate; 8. Connecting column; 9. Support block; 10. Helical bevel gear; 11. Upper support plate; 12. Motor; 13. Rotating column; 14. Side moving groove; 15. Inner moving groove; 16. External compression spring; 17. Support column; 18. Limiting ring; 19. Lower support plate; 20. Side moving block; 21. Inner clamping plate; 22. Inner moving block; 23. Inner compression spring. Detailed Implementation

[0027] 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.

[0028] This utility model provides: an X-ray inspection device for PCB boards, such as... Figure 1-4 As shown, the system includes a testing box 1, a placement frame 3, a support plate 4, a connecting column 8, a support block 9, a clamping assembly, and a rotating assembly. The placement frame 3 is rotatably disposed inside the testing box 1. The placement frame 3 contains a clamping assembly for clamping PCBs of different sizes. The clamping assembly includes clamping plates 7 and external compression springs 16. Two sets of clamping plates 7 and external compression springs 16 are provided. The two sets of clamping plates 7 are slidably disposed inside the placement frame 3. One end of each set of external compression springs 16 is disposed on the opposite side of the two sets of clamping plates 7, and the other end of each set of external compression springs 16 is fixedly connected to the inner wall of the placement frame 3. Side moving blocks 20 are fixedly installed on both sides. The inner wall of the placement frame 3 is provided with side moving grooves 14 corresponding to the four sets of side moving blocks 20. Anti-slip pads are provided on the inner wall of the clamping plate 7. The two sets of clamping plates 7 are squeezed to move to both sides. The two sets of clamping plates 7 move along the inside of the side moving grooves 14 through the side moving blocks 20 on the side, thereby improving the stability of the movement of the two sets of clamping plates 7. Then, the PCB board is placed between the two sets of clamping plates 7. Under the action of the external compression spring 16, the two sets of clamping plates 7 clamp the PCB board. The anti-slip pads improve the stability of the PCB board clamping and avoid damage to the PCB board.

[0029] In this embodiment, as Figure 3 and Figure 4 As shown, two sets of inner clamping plates 21 are slidably arranged inside the two sets of clamping plates 7. An inner compression spring 23 is fixedly arranged on the opposite side of the two sets of inner clamping plates 21. The other end of the two sets of inner compression springs 23 contacts the inner wall of the clamping plate 7. An inner moving block 22 is fixedly arranged on both sides of the inner clamping plate 21. An inner moving groove 15 corresponding to the inner moving block 22 is opened on the inner wall of the two sets of clamping plates 7. The two sets of inner clamping plates 21 are squeezed to move to both sides. Then the PCB board is placed between the two sets of inner clamping plates 21 inside the clamping plate 7. The inner clamping plate 21 moves into the inner moving groove 15 through the inner moving block 22, thereby ensuring the stability of the movement of the inner clamping plate 21. Then, under the action of the inner compression spring 23, the two sets of inner clamping plates 21 clamp one side of the PCB board, thereby achieving the effect of clamping PCB boards of different sizes.

[0030] In a further preferred embodiment, such as Figure 2 and Figure 3As shown, the inspection box 1 has two sets of support plates 4 fixedly installed inside, and support blocks 9 are fixedly installed on the corresponding surfaces of the two sets of support plates 4. A connecting column 8 is rotatably installed inside the support block 9, and one end of the connecting column 8 is fixedly connected to the placement frame 3. An inspection system 6 is installed at the top of the inspection box 1 and above the placement frame 3. A display system 2 is installed on the upper surface of the inspection box 1 and is electrically connected to the inspection system 6. The placement frame 3 does not contact the inner wall of the inspection box 1, nor does it contact the inspection system 6. The two sets of support plates 4 support the support blocks 9, and the support blocks 9 support the connecting column 8, ensuring that the connecting column 8 does not tilt while rotating. The inspection system 6 is installed above the placement frame 3 to perform X-ray inspection on the PCB board, and then transmits the inspection data to the display system 2 for processing and display via electrical connection or Bluetooth. The placement frame 3 does not contact the inspection box 1 or the inspection system 6, ensuring the stability of the placement frame 3 during rotation.

[0031] Furthermore, such as Figure 3 As shown, the other end of the connecting column 8 is provided with a rotating component for driving the placement frame 3 to rotate and flip. The rotating component includes a bevel gear 5, a slanted bevel gear 10, and a lower support plate 19. The lower support plate 19 is located on the bottom surface of the detection box 1. The bevel gear 5 is rotatably mounted on the upper surface of the lower support plate 19. The slanted bevel gear 10 is fixedly connected to the other end of the connecting column 8, and the bevel gear 5 and the slanted bevel gear 10 are meshed. The lower support plate 19 supports the bevel gear 5. When the bevel gear 5 rotates, it drives the slanted bevel gear 10 to rotate through its teeth. The slanted bevel gear 10 then rotates through the connecting column 8, thereby driving the PCB board inside the placement frame 3 to rotate and flip.

[0032] It is worth noting that, such as Figure 3 As shown, an upper support plate 11 is fixedly installed inside the detection box 1 and above the bevel gear 5. A motor 12 is bolted to the upper surface of the upper support plate 11. A rotating column 13 is keyed to the output end of the motor 12, and the bottom end of the rotating column 13 is fixedly connected to the upper surface of the bevel gear 5. When the motor 12 is started, it drives the rotating column 13 to rotate. The rotation of the rotating column 13 passes through the upper support plate 11 and drives the bevel gear 5 to rotate, thereby driving the helical bevel gear 10 to rotate through meshing.

[0033] In addition, such as Figure 3As shown, a limiting ring 18 is fixedly installed between the upper support plate 11 and the lower support plate 19. A rotating hole corresponding to the connecting column 8 is opened through the side of the limiting ring 18. The connecting column 8 is rotatably installed inside the limiting ring 18, and the helical bevel gear 10 is located on the side of the limiting ring 18 away from the support block 9. The lower support plate 19 is fixedly installed on the upper surface of the detection box 1 via the support column 17. The number of teeth on the surface of the bevel gear 5 is half the number of teeth on the side of the helical bevel gear 10. The limiting ring 18 supports and limits the connecting column 8, thereby preventing the helical bevel gear 10 from detaching from the upper support plate. Between the support plate 11 and the lower support plate 19, the stability of the meshing of the bevel gear 5 and the slanted bevel gear 10 is ensured. The teeth on the surface of the bevel gear 5 are set as shown in the figure. When the toothed side of the bevel gear 5 meshes with the slanted bevel gear 10, the bevel gear 5 drives the slanted bevel gear 10 to rotate 180 degrees, thereby causing the PCB board inside the placement frame 3 to flip over. When the bevel gear 5 rotates to the toothless side, it will not drive the slanted bevel gear 10 to rotate, thus ensuring that the placement frame 3 can rotate 180 degrees, which facilitates X-ray tube inspection on both sides of the PCB board.

[0034] 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An X-ray inspection apparatus for PCB boards, characterized in that, It include: detection box (1), put frame (3), support plate (4), connecting column (8), support block (9), clamping assembly and rotating assembly, the put frame (3) is rotationally arranged in the detection box (1), the put frame (3) is provided with clamping assembly for clamping different size PCB board inside; Wherein, the detection box (1) is fixedly provided with two groups of support plates (4) inside, two groups of support plates (4) are fixedly provided with support blocks (9) on the corresponding surface, the support block (9) is rotationally arranged with connecting column (8) inside, one end of the connecting column (8) is fixedly connected with the put frame (3); The other end of the connecting column (8) is provided with a rotating assembly for driving the put frame (3) to rotate and turn over; The rotating assembly includes bevel gear (5), bevel gear (10) and lower support disc (19), the lower support disc (19) is arranged on the inner bottom surface of the detection box (1), the bevel gear (5) is rotationally arranged on the upper surface of the lower support disc (19), the bevel gear (10) is fixedly connected with the other end of the connecting column (8), and the bevel gear (5) is meshingly arranged with the bevel gear (10).

2. The X-ray inspection apparatus for PCB according to claim 1, wherein: The upper support disc (11) is fixedly arranged above the bevel gear (5) in the detection box (1), the upper surface of the upper support disc (11) is bolted with a motor (12), the output end of the motor (12) is keyed connected with a rotating column (13), and the bottom end of the rotating column (13) is fixedly connected with the upper surface of the bevel gear (5).

3. The X-ray inspection apparatus for PCBs according to claim 2, characterized in that: The upper support disc (11) and the lower support disc (19) are fixedly provided with a limiting ring (18) therebetween, the limiting ring (18) is provided with a rotating hole corresponding to the connecting column (8) through the side surface, the connecting column (8) is rotationally arranged in the limiting ring (18), and the bevel gear (10) is located on the side of the limiting ring (18) away from the support block (9).

4. The X-ray inspection apparatus for PCB according to claim 1, wherein: The lower support disc (19) is fixedly arranged on the upper surface of the detection box (1) through a support column (17), and the number of teeth on the surface of the bevel gear (5) is half of the number of teeth on the side surface of the bevel gear (10).

5. The X-ray inspection apparatus for PCB according to claim 1, wherein: The clamping assembly includes clamping plates (7) and outer compression springs (16), the clamping plates (7) and the outer compression springs (16) are both provided with two groups, the two groups of clamping plates (7) are slidingly arranged in the put frame (3), one end of the two groups of outer compression springs (16) is arranged on the opposite surface of the two groups of clamping plates (7), and the other end of the two groups of outer compression springs (16) is fixedly connected with the inner wall of the put frame (3).

6. The X-ray inspection apparatus for PCBs according to claim 5, characterized in that: The two groups of clamping plates (7) are both fixedly provided with side moving blocks (20), and the inner wall of the put frame (3) is provided with side moving grooves (14) corresponding to the four groups of side moving blocks (20).

7. The X-ray inspection apparatus for PCB boards according to claim 6, characterized in that: The two groups of clamping plates (7) are both slidingly provided with two groups of inner clamping plates (21), the opposite surfaces of the two groups of inner clamping plates (21) are both fixedly provided with inner compression springs (23), and the other ends of the two groups of inner compression springs (23) are in contact with the inner wall of the clamping plate (7).

8. The X-ray inspection apparatus for PCB boards according to claim 7, characterized in that: The two sides of the inner clamping plate (21) are both fixedly provided with inner moving blocks (22), and the inner wall of the two groups of clamping plates (7) is both provided with inner moving grooves (15) corresponding to the inner moving blocks (22).

9. The X-ray inspection apparatus for PCBs according to claim 1, characterized in that: The detection box (1) is provided with a detection system (6) on the top and above the placing frame (3), the upper surface of the detection box (1) is provided with a display system (2), and the display system (2) is electrically connected with the detection system (6).

10. The X-ray inspection apparatus for PCB boards according to claim 9, characterized in that: The placing frame (3) is not in contact with the inner wall of the detection box (1), and the placing frame (3) is not in contact with the detection system (6).

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