A high-precision circuit board solder joint defect detection mechanism

Abstract

The utility model discloses a kind of high-precision circuit board solder joint defect detection mechanism, it is related to high-precision circuit board solder joint defect detection mechanism field, specifically a kind of high-precision circuit board solder joint defect detection mechanism, including support frame, the top of the support frame is fixedly connected with conveying frame, one end of the conveying frame is fixedly connected with servo motor, the output of the servo motor is fixedly connected with driving wheel, the side of the driving wheel is connected with driven wheel by belt, one end of the driven wheel is fixedly connected with driving roller, the other end of the conveying frame is fixedly connected with driven roller, the side of the driving roller and the side of driven roller transmission connection have conveying belt, placing platform is equipped on the conveying belt, the inside of the conveying frame is fixedly connected with two conveying slide rails;The utility model solves the problem that a kind of high-precision circuit board solder joint defect detection mechanism of existing relies on manual operation and is comprehensive enough to the problem of solder joint detection.

Description

Technical Field

[0001] This utility model relates to the field of high-precision circuit board solder joint defect detection mechanism, specifically a high-precision circuit board solder joint defect detection mechanism. Background Technology

[0002] In the field of electronics manufacturing, circuit boards are core components, and the quality of their solder joints directly determines the operational stability and lifespan of electronic devices. Therefore, solder joint defect detection is a crucial step in the production process.

[0003] Existing circuit board solder joint inspections largely rely on manual visual inspection, which is not only inefficient and difficult to adapt to the needs of large-scale mass production, but also prone to fatigue and subjective judgment differences due to long hours of manual work, resulting in a high rate of missed and false detections. While some automated inspection equipment has been introduced, the moving mechanism of the inspection camera often lacks a stable guiding structure, which can easily lead to problems such as movement jamming and path deviation, making it impossible to achieve comprehensive image acquisition of solder joints. At the same time, the installation structure of the inspection components is mostly a fixed design, making it difficult to flexibly adjust the spacing according to the inspection requirements of different circuit board sizes, resulting in poor adaptability.

[0004] Therefore, a new type of high-precision circuit board solder joint defect detection mechanism needs to be designed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision circuit board solder joint defect detection mechanism to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision circuit board solder joint defect detection mechanism, comprising a support frame, a conveyor frame fixedly connected to the top of the support frame, a servo motor fixedly connected to one end of the conveyor frame, a drive wheel fixedly connected to the output end of the servo motor, a driven wheel connected to the side of the drive wheel via a belt, a drive roller fixedly connected to one end of the driven wheel, a driven roller fixedly connected to the other end of the conveyor frame, a conveyor belt drivingly connecting the side of the drive roller and the side of the driven roller, a placement platform provided on the conveyor belt, and two conveyor rails fixedly connected to the inner side of the conveyor frame, the two conveyor rails being symmetrically arranged.

[0007] Preferably, the bottom of the placement platform is fixedly connected to multiple auxiliary sliding rods, and the auxiliary sliding rods are slidably connected to the two sides of the conveying rail. Two vision inspection components are fixedly connected to the two sides of the conveying frame, and the two vision inspection components are symmetrically arranged.

[0008] Preferably, the visual inspection component includes two mounting blocks, which are symmetrically arranged. The mounting blocks are fixedly connected to the outside of the conveyor frame by screws. A support rod is fixedly connected to the top of the mounting blocks, and a crossbeam is fixedly connected between the support rods.

[0009] Preferably, a drive motor is fixedly connected to the side of one of the support rods, and a threaded rod is fixedly connected to the output end of the drive motor through the support rod. A bushing is rotatably connected to one end of the threaded rod, and a slider is slidably connected to the threaded rod. Moving blocks are fixedly connected to both sides of the slider.

[0010] Preferably, the crossbeam has movable grooves on both sides inside, the movable grooves fit into the movable block, the bottom of the slider is fixedly connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a CCD vision inspection camera.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the servo motor controls the conveyor belt's speed and position, and the auxiliary sliding rod slides stably along the conveyor rail, preventing deviation during platform transport and ensuring the circuit board is delivered to the inspection area, thus improving the stability and accuracy of the transport. In the vision inspection component, the detachable connection of the mounting block facilitates flexible adjustment of the structural spacing. The cooperation of the drive motor, threaded rod, and slider, combined with the precise guidance of the moving block along the moving groove, enables the CCD vision inspection camera to move smoothly and accurately, achieving comprehensive image acquisition of the circuit board solder joints, significantly improving the accuracy and comprehensiveness of the inspection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a front view of the present invention.

[0014] Figure 3 This utility model Figure 2 A three-dimensional cross-sectional view of point AA in the middle.

[0015] Figure 4 This utility model Figure 3 Enlarged view of point B in the middle.

[0016] Figure 5 This is the right view of the present invention.

[0017] Figure 6 This utility model Figure 4 Enlarged view of point C in the middle.

[0018] In the diagram: 1. Support frame; 2. Conveyor frame; 3. Servo motor; 4. Drive wheel; 5. Belt; 6. Driven wheel; 7. Driven roller; 8. Driven roller; 9. Conveyor belt; 10. Placement platform; 11. Conveyor slide rail; 12. Auxiliary sliding rod; 13. Mounting block; 14. Screw; 15. Support rod; 16. Crossbeam; 17. Drive motor; 18. Threaded rod; 19. Bushing; 20. Slider; 21. Moving block; 22. Moving groove; 23. Connecting rod; 24. CCD vision inspection camera. Detailed Implementation

[0019] 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.

[0020] All electronic components in this application are controlled by an external controller.

[0021] Example 1 Please refer to Figure 1-6 As shown, this utility model provides a high-precision circuit board solder joint defect detection mechanism, including a support frame 1. A conveyor frame 2 is fixedly connected to the top of the support frame 1. A servo motor 3 is fixedly connected to one end of the conveyor frame 2. The moving speed of the conveyor belt 9 can be adjusted by controlling the rotation speed and rotation angle of the servo motor 3. A drive wheel 4 is fixedly connected to the output end of the servo motor 3. A driven wheel 6 is connected to the side of the drive wheel 4 via a belt 5. A drive roller 7 is fixedly connected to one end of the driven wheel 6. The drive wheel 4 and the driven wheel 6 cooperate with the conveyor belt 9 to convert the rotational motion of the motor into linear transmission of the belt 5. The driven wheel 6 follows the drive wheel 7 via the belt 5. The rotating wheel 4 drives the rotating drive roller 7 fixed to it to rotate. The other end of the conveyor frame 2 is fixedly connected to the driven roller 8. The side of the drive roller 7 and the side of the driven roller 8 are connected to the conveyor belt 9. The drive roller 7 rotates under the drive of the driven wheel 6 and drives the conveyor belt 9 to move through the friction between it and the conveyor belt 9. The driven roller 8 rotates along with the conveyor belt 9. The conveyor belt 9 is provided with a placement platform 10 for carrying the placement platform 10 and the circuit board to be tested, and transporting the circuit board from the loading end to the testing area. The inner side of the conveyor frame 2 is fixedly connected to two conveyor slide rails 11, which are symmetrically arranged.

[0022] Specifically, the bottom of the placement platform 10 is fixedly connected with multiple auxiliary sliding rods 12. On both sides of the multiple auxiliary sliding rods 12, the conveyor rails 11 cooperate with the placement platform 10 to provide a stable sliding channel for the auxiliary sliding rods 12. By restricting the movement direction of the auxiliary sliding rods 12, the placement platform 10 is prevented from shifting left or right when moving with the conveyor belt 9, ensuring that the placement platform 10 is always conveyed in a straight line. The auxiliary sliding rods 12 are slidably connected in the conveyor rails 11. Two vision detection components are fixedly connected to both sides of the conveyor frame 2, and the two vision detection components are symmetrically arranged.

[0023] The visual inspection component includes two mounting blocks 13, which are symmetrically arranged. The mounting blocks 13 are fixedly connected to the outside of the conveyor frame 2 by screws 14. The screws 14 are detachable, which facilitates adjustment of the distance between the two mounting blocks 13. A support rod 15 is fixedly connected to the top of the mounting block 13. Through the fixed connection with the mounting block 13 and the crossbeam 16, a vertical frame of the visual inspection component is constructed, ensuring that the crossbeam 16 is at a preset height higher than the placement platform 10. The crossbeam 16 is fixedly connected between the support rods 15. The crossbeam 16 has a channel inside, which provides installation positions for internal components.

[0024] Based on the above embodiments, specifically, a drive motor 17 is fixedly connected to the side of one of the support rods 15, and a threaded rod 18 is fixedly connected to the output end of the drive motor 17 through the support rod 15. A bushing 19 is rotatably connected to one end of the threaded rod 18, and a slider 20 is slidably connected to the threaded rod 18. Moving blocks 21 are fixedly connected to both sides of the slider 20.

[0025] The output end drives the threaded rod 18 to rotate, which converts the rotational motion of the motor into linear motion, thereby driving the slider 20 to move. The bushing 19 is installed at one end of the threaded rod 18, which supports and allows the threaded rod 18 to rotate. The slider 20 meshes with the threaded rod 18 and slides linearly along the threaded rod 18 under the action of rotation. The moving blocks 21 on both sides of the slider 20 assist the slider 20 to move linearly on the crossbeam 16, ensuring smooth operation.

[0026] Specifically, the crossbeam 16 has movable grooves 22 on both sides inside, which fit into the movable block 21. The movable block 21 is fixed on both sides of the slider 20 and embedded in the movable groove 22 of the crossbeam 16, guiding the slider 20 to move in a straight line along the groove direction to ensure the precise movement path of the slider 20. A connecting rod 23 is fixedly connected to the bottom of the slider 20, and a CCD vision inspection camera 24 is fixedly connected to the bottom of the connecting rod 23 to collect images of the solder joints of the circuit board on the placement platform 10.

[0027] Working principle: The circuit board to be inspected is placed on the placement platform 10 on the conveyor belt 9. After the servo motor 3 is started, its output end drives the drive wheel 4 to rotate. The drive wheel 4 drives the driven wheel 6 to rotate synchronously through the belt 5, which in turn drives the drive roller 7 fixed to the driven wheel 6 to rotate. The drive roller 7 drives the conveyor belt 9 to move by friction with the conveyor belt 9. The driven roller 8 follows the rotation under the pull of the conveyor belt 9, realizing the conveying of the placement platform 10. When the circuit board reaches the inspection area, the vision inspection component starts to work: the drive motor 17 on the side of the support rod 15 is started, and its output end drives the threaded rod 18 to rotate. The rotational motion of the threaded rod 18 is converted into the linear motion of the slider 20. The moving blocks 21 on both sides of the slider 20 are embedded in the moving grooves 22 inside the crossbeam 16, guiding the slider 20 to slide smoothly along the groove direction. The slider 20 drives the CCD vision inspection camera to move synchronously through the connecting rod 23 at the bottom, thereby performing comprehensive and accurate image acquisition of the solder joints of the circuit board on the placement platform 10.

[0028] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-precision circuit board solder joint defect detection mechanism, characterized in that, The system includes a support frame (1), a conveyor frame (2) fixedly connected to the top of the support frame (1), a servo motor (3) fixedly connected to one end of the conveyor frame (2), a drive wheel (4) fixedly connected to the output end of the servo motor (3), a driven wheel (6) connected to the side of the drive wheel (4) via a belt (5), a drive roller (7) fixedly connected to one end of the driven wheel (6), a driven roller (8) fixedly connected to the other end of the conveyor frame (2), a conveyor belt (9) drivingly connected to the side of the drive roller (7) and the side of the driven roller (8), a placement platform (10) provided on the conveyor belt (9), and two conveyor rails (11) fixedly connected to the inner side of the conveyor frame (2), the two conveyor rails (11) being symmetrically arranged.

2. The high-precision circuit board solder joint defect detection mechanism according to claim 1, characterized in that: The bottom of the placement platform (10) is fixedly connected with multiple auxiliary sliding rods (12), which are located on both sides. The auxiliary sliding rods (12) are slidably connected in the conveying slide rail (11). Two vision detection components are fixedly connected on both sides of the conveying frame (2), and the two vision detection components are symmetrically arranged.

3. The high-precision circuit board solder joint defect detection mechanism according to claim 2, characterized in that: The visual inspection component includes two mounting blocks (13), which are symmetrically arranged. The mounting blocks (13) are fixedly connected to the outside of the conveyor frame (2) by screws (14). A support rod (15) is fixedly connected to the top of the mounting blocks (13), and a crossbeam (16) is fixedly connected between the support rods (15).

4. The high-precision circuit board solder joint defect detection mechanism according to claim 3, characterized in that: A drive motor (17) is fixedly connected to the side of one of the support rods (15). The output end of the drive motor (17) passes through the support rod (15) and is fixedly connected to a threaded rod (18). A bushing (19) is rotatably connected to one end of the threaded rod (18). A slider (20) is slidably connected to the threaded rod (18). Moving blocks (21) are fixedly connected to both sides of the slider (20).

5. The high-precision circuit board solder joint defect detection mechanism according to claim 4, characterized in that: The crossbeam (16) has movable grooves (22) on both sides inside. The movable grooves (22) fit into the movable block (21). The bottom of the slider (20) is fixedly connected to a connecting rod (23). The bottom of the connecting rod (23) is fixedly connected to a CCD vision inspection camera (24).

Images