Downward-lighting AOI detection machine for detection

Abstract

The utility model relates to the field of PCB (Printed Circuit Board) detection, and discloses a downward illumination AOI (Automatic Optic Inspection) detector for detection, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a support frame, the upper surface of the support frame is fixedly connected with a top plate, the inside of the top plate is fixedly connected with a material box, the lower surface of the top plate is fixedly connected with an optical detector, the inside of the support frame is provided with a motor, and the motor is fixedly connected with the top plate. The side wall of the motor is fixedly connected into the bottom plate, the output end of the motor is fixedly connected with a rotating shaft, the side wall of the rotating shaft is fixedly connected with a rotating plate, the lower surface of the rotating plate is fixedly connected with a shifting plate, the upper surface of the bottom plate is rotationally connected with a rotating column, and the side wall of the rotating column is fixedly connected with a limiting plate. According to the intermittent feeding device, the rotating plate is driven by the motor to rotate, so that the shifting plate drives the limiting plate to rotate, the rotating plate rotates by 360 degrees, the limiting plate drives the rotating frame to intermittently rotate by 90 degrees, PCBs in the material box slide into the rotating frame, the intermittent feeding effect is achieved, and the working efficiency is improved through the structure.

Description

Technical Field

[0001] The utility model relates to the field of PCB board detection, in particular to an under-illumination AOI detector for detection. Background Art

[0002] The under-illumination AOI detector is an automated device for detecting the quality of printed circuit boards (PCBs). It takes pictures of the PCB through a high-resolution camera and multi-angle light sources, and uses advanced image processing algorithms to identify problems such as solder joint defects, short circuits, open circuits, and component offsets. The device can automatically scan the entire PCB board, perform real-time analysis and judgment according to preset standards, and record and save the results to form a detailed report. The under-illumination AOI detector is widely used in fields such as electronic manufacturing, automotive electronics, consumer electronics, and industrial control, and has the advantages of high precision, high efficiency, non-contact detection, full-automatic operation, and cost savings. It is an important tool for improving product quality and production efficiency.

[0003] When the existing under-illumination AOI detector works, the printed circuit board (PCB) to be detected is placed on the detection platform, and the high-resolution camera and multi-angle light source system are started to take pictures of the PCB. The captured images are sent to the image processing unit through the transmission system. Next, the image processing unit uses advanced algorithms to analyze the images and identify problems such as solder joint defects, short circuits, open circuits, and component offsets. However, when some traditional under-illumination AOI detectors work, they do not consider that the staff needs to manually place the PCB board, which is rather troublesome and affects the work efficiency. Therefore, an under-illumination AOI detector for detection is proposed to solve the above problems. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides an under-illumination AOI detector for detection, aiming to improve the problem that in the prior art, the staff needs to manually place the PCB board, which is rather troublesome and affects the work efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The downward illumination AOI inspection machine for detection includes a bottom plate. A support frame is fixedly connected to the upper surface of the bottom plate. A top plate is fixedly connected to the upper surface of the support frame. A material box is fixedly connected inside the top plate. An optical detector is fixedly connected to the lower surface of the top plate. A motor is arranged inside the support frame. The side wall of the motor is fixedly connected inside the bottom plate. The output end of the motor is fixedly connected with a rotating shaft. A rotating plate is fixedly connected to the side wall of the rotating shaft. A dial plate is fixedly connected to the lower surface of the rotating plate. A rotating column is rotatably connected to the upper surface of the bottom plate. A limiting plate is fixedly connected to the side wall of the rotating column. The side wall of the dial plate is slidably connected inside the limiting plate. A rotating frame is fixedly connected to the upper surface of the rotating column. A groove is arranged inside the rotating frame. The bottom of the material box is in contact with the bottom surface of the groove of the rotating frame. The rotating column is provided with an auxiliary component for transferring the PCB board after detection.

[0007] As a further description of the above technical solution:

[0008] The auxiliary component includes a material receiving plate and a slideway. The inner wall of the material receiving plate is rotatably connected to the side wall of the rotating column. The upper surface of the material receiving plate is in contact with the lower surface of the rotating frame. The side wall of the slideway is fixedly connected inside the material receiving plate. Four through holes are opened inside the rotating frame. A material dropping port is opened at the connection of the material receiving plate and the slideway. The through holes and the material dropping port are of the same size and match each other.

[0009] As a further description of the above technical solution:

[0010] A fixing frame is fixedly connected to the upper surface of the bottom plate. An installation frame is fixedly connected to the upper surface of the fixing frame. A conveyor belt is arranged inside the installation frame. The side wall of the slideway is fixedly connected to the side wall of the installation frame. The slideway is in contact with the conveyor belt.

[0011] As a further description of the above technical solution:

[0012] A fixing rod is fixedly connected to the upper surface of the installation frame. A rotating arm is rotatably connected to the upper surface of the installation frame.

[0013] As a further description of the above technical solution:

[0014] A reset component is arranged between the fixing rod and the rotating arm. A rubber plate is fixedly connected to the side wall of the rotating arm.

[0015] As a further description of the above technical solution:

[0016] The reset component includes a spring. One end of the spring is fixedly connected to the side wall of the fixing rod. The other end of the spring is fixedly connected to the side wall of the rubber plate.

[0017] As a further description of the above technical solution:

[0018] A slide rail is fixedly connected to the upper surface of the bottom plate, and a collection box is slidably connected to the side wall of the slide rail;

[0019] As a further description of the above technical solution:

[0020] The collection box is arranged at the bottom of one side of the mounting frame, and a handle is fixedly connected to the side wall of the collection box.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the motor drives the rotating plate to rotate, so that the dial plate drives the limiting plate to rotate, realizing a 360-degree rotation of the rotating plate, and the limiting plate drives the rotating frame to rotate intermittently by 90 degrees, so that the PCB board in the material box slides into the inside of the rotating frame, achieving the effect of intermittent feeding, and solving the problem that it is more troublesome for the staff to place the PCB board in some traditional downward illumination AOI inspection machines. The working efficiency is improved through the above structure.

[0023] 2. In the utility model, when the sliding inertia of the PCB board on the slideway is too large, it will hit the rubber plate, triggering the rotation of the rotating arm and driving the spring to deform. When the inertia weakens, the spring recovers, ensuring that the PCB board is located in the middle of the conveyor belt, achieving the effect of limiting the PCB board during the conveying process to prevent deviation, and solving the problem that the PCB board is easily dropped and damaged from the conveyor belt when some traditional downward illumination AOI inspection machines convey the inspected PCB boards. The practicability of the equipment is improved through the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of the downward illumination AOI inspection machine for detection proposed by the utility model;

[0025] Figure 2 is a structural schematic diagram of the bottom plate of the downward illumination AOI inspection machine for detection proposed by the utility model;

[0026] Figure 3 is a partial structural schematic diagram of the top of the bottom plate of the downward illumination AOI inspection machine for detection proposed by the utility model;

[0027] Figure 4 is Figure 3 the enlarged view at A in

[0028] Legend Explanation:

[0029] 1. Bottom plate; 2. Support frame; 3. Top plate; 4. Material box; 5. Optical detector; 6. Motor; 7. Rotating shaft; 8. Rotating plate; 9. Pushing plate; 10. Rotating column; 11. Limiting plate; 12. Material receiving plate; 13. Rotating frame; 14. Slideway; 15. Fixed frame; 16. Mounting frame; 17. Conveyor belt; 18. Fixed rod; 19. Rotating arm; 20. Spring; 21. Rubber plate; 22. Slide rail; 23. Collection box; 24. Handle. Detailed implementation manner

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Refer to Figures 1 - 3 , the down-illuminated AOI detector for detection includes a bottom plate 1. A support frame 2 is fixedly connected to the upper surface of the bottom plate 1. A top plate 3 is fixedly connected to the upper surface of the support frame 2. A material box 4 is fixedly connected to the inside of the top plate 3. An optical detector 5 is fixedly connected to the lower surface of the top plate 3. A motor 6 is arranged inside the support frame 2. The side wall of the motor 6 is fixedly connected to the inside of the bottom plate 1. The output end of the motor 6 is fixedly connected to a rotating shaft 7. A rotating plate 8 is fixedly connected to the side wall of the rotating shaft 7. A pushing plate 9 is fixedly connected to the lower surface of the rotating plate 8. A rotating column 10 is rotatably connected to the upper surface of the bottom plate 1. A limiting plate 11 is fixedly connected to the side wall of the rotating column 10. The side wall of the pushing plate 9 is slidably connected to the inside of the limiting plate 11. A rotating frame 13 is fixedly connected to the upper surface of the rotating column 10. A groove is arranged inside the rotating frame 13. The bottom of the material box 4 is in contact with the bottom surface of the groove of the rotating frame 13. The rotating column 10 is provided with an auxiliary component for transferring the PCB board after detection. The auxiliary component includes a material receiving plate 12 and a slideway 14. The inner wall of the material receiving plate 12 is rotatably connected to the side wall of the rotating column 10. The upper surface of the material receiving plate 12 is in contact with the lower surface of the rotating frame 13. The side wall of the slideway 14 is fixedly connected to the inside of the material receiving plate 12. Four through holes are arranged inside the rotating frame 13. A material dropping port is arranged at the connection between the material receiving plate 12 and the slideway 14. The through holes and the material dropping port are of the same size;

[0032] When performing the PCB board detection task, the operator needs to first place the PCB board inside the bin 4. After that, the PCB board at the bottom layer will be closely attached to the surface of the rotating frame 13. Immediately afterwards, the operator needs to start the motor 6 to drive the rotating plate 8 to rotate. The baffle 9 on the rotating plate 8 will slide along the inside of the limiting plate 11 and drive the limiting plate 11 to rotate, so as to achieve the effect that the rotating plate 8 rotates one week and the limiting plate 11 rotates intermittently by 90 degrees. During the rotation of the limiting plate 11, through the action of the rotating column 10, it will drive the rotating frame 13 to rotate. At this time, the PCB board at the bottom layer inside the bin 4 will slide into the inside of the rotating frame 13. As the rotating frame 13 continuously rotates intermittently, the PCB boards inside the bin 4 will continuously fall into the inside of the rotating frame 13. During this process, whenever the PCB board passes under the optical detector 5, the optical detector 5 will detect it. The optical detector 5 is an existing technology that can be checked and will not be elaborated here. The PCB board after being detected by the optical detector 5 will slide along the slideway 14 and finally reach the surface of the conveyor belt 17.

[0033] Refer to Figures 3 - 4 , a fixed rod 18 is fixedly connected to the upper surface of the mounting frame 16. A rotating arm 19 is rotatably connected to the upper surface of the mounting frame 16. A reset assembly is arranged between the fixed rod 18 and the rotating arm 19. A rubber plate 21 is fixedly connected to the side wall of the rotating arm 19. The reset assembly includes a spring 20. One end of the spring 20 is fixedly connected to the side wall of the fixed rod 18, and the other end of the spring 20 is fixedly connected to the side wall of the rubber plate 21. A slide rail 22 is fixedly connected to the upper surface of the bottom plate 1. A collection box 23 is slidably connected to the side wall of the slide rail 22. The collection box 23 is arranged at the bottom on one side of the mounting frame 16. A handle 24 is fixedly connected to the side wall of the collection box 23.

[0034] During the process of the PCB board sliding on the slideway 14, when its inertia exceeds a certain degree, it will hit the rubber plate 21 located below the slideway 14. This impact causes the rotating arm 19 to perform a rotational movement. At the same time, the rotation of the rotating arm 19 also drives the spring 20, causing it to undergo corresponding deformation. Once the inertia of the PCB board is weakened, the spring 20 will begin to return to its original state, which ensures that the PCB board can always be located in the middle of the conveyor belt 17, avoiding its deviation or slipping out of the conveyor belt 17. The PCB board will finally fall into the inside of the collection box 23. A sponge pad is laid inside the collection box 23, which can effectively buffer the impact force generated when the PCB board falls, thus avoiding the possibility of the PCB board being damaged during the falling process. When the detection work is completed, the staff can transfer the collection box 23 to other work positions through the handle 24.

[0035] Working principle: When using this device to detect the PCB board, first place the PCB board inside the material box 4. At this time, the bottommost PCB board will be in contact with the surface of the rotating frame 13. Then start the motor 6 to drive the rotating plate 8 to rotate. At this time, the baffle 9 on the rotating plate 8 will slide into the inside of the limiting plate 11 and drive it to rotate, achieving the effect that when the rotating plate 8 rotates one week, the limiting plate 11 rotates intermittently by 90 degrees. When the limiting plate 11 rotates, it will drive the rotating frame 13 to rotate through the rotating column 10. At this time, the bottommost PCB board inside the material box 4 will slide into the inside of the rotating frame 13. As the rotating frame 13 rotates intermittently continuously, the PCB boards inside the material box 4 will continuously fall into the inside of the rotating frame 13. When the PCB board passes under the optical detector 5, the optical detector 5 will detect it. The detected PCB board will slide to the surface of the conveyor belt 17 through the slideway 14. During the sliding process of the PCB board, when the inertia is too large, it will hit the rubber plate 21, causing the rotating arm 19 to rotate and pulling the spring 20 to deform. When the inertia weakens, the spring 20 will reset, achieving the effect of ensuring that the PCB board is always placed in the middle of the conveyor belt 17. The PCB board will finally fall into the inside of the collection box 23. A sponge pad is laid inside the collection box 23 to avoid damage to the PCB board when it falls. After the detection work is completed, the staff can transfer the collection box 23 to other positions through the handle 24.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Bottom-illuminated AOI inspection machine for detection, including a bottom plate (1), characterized in that: On the upper surface of the bottom plate (1), a support frame (2) is fixedly connected. On the upper surface of the support frame (2), a top plate (3) is fixedly connected. Inside the top plate (3), a material box (4) is fixedly connected. On the lower surface of the top plate (3), an optical detector (5) is fixedly connected. Inside the support frame (2), a motor (6) is arranged. The side wall of the motor (6) is fixedly connected inside the bottom plate (1). The output end of the motor (6) is fixedly connected with a rotating shaft (7). On the side wall of the rotating shaft (7), a rotating plate (8) is fixedly connected. On the lower surface of the rotating plate (8), a dial plate (9) is fixedly connected. On the upper surface of the bottom plate (1), a rotating column (10) is rotatably connected. On the side wall of the rotating column (10), a limiting plate (11) is fixedly connected. The side wall of the dial plate (9) is slidably connected inside the limiting plate (11). On the upper surface of the rotating column (10), a rotating frame (13) is fixedly connected. Inside the rotating frame (13), a groove is arranged. The bottom of the material box (4) is in contact with the bottom surface of the groove of the rotating frame (13). The rotating column (10) is provided with an auxiliary component for transferring the PCB board after detection.

2. The bottom-illuminated AOI inspection machine for inspection according to claim 1, wherein: The auxiliary component includes a material receiving plate (12) and a slideway (14). The inner wall of the material receiving plate (12) is rotatably connected to the side wall of the rotating column (10). The upper surface of the material receiving plate (12) is in contact with the lower surface of the rotating frame (13). The side wall of the slideway (14) is fixedly connected inside the material receiving plate (12). Four through holes are opened inside the rotating frame (13). A material dropping port is opened at the connection between the material receiving plate (12) and the slideway (14). The sizes of the through holes and the material dropping port are matched.

3. The bottom-illuminated AOI inspection machine for detection according to claim 2, characterized in that: On the upper surface of the bottom plate (1), a fixing frame (15) is fixedly connected. On the upper surface of the fixing frame (15), an installation frame (16) is fixedly connected. Inside the installation frame (16), a conveyor belt (17) is arranged. The side wall of the slideway (14) is fixedly connected to the side wall of the installation frame (16). The slideway (14) is in contact with the conveyor belt (17).

4. The bottom-illuminated AOI inspection machine for inspection according to claim 3, characterized in that: On the upper surface of the installation frame (16), a fixing rod (18) is fixedly connected. On the upper surface of the installation frame (16), a rotating arm (19) is rotatably connected.

5. The bottom-illuminated AOI inspection machine for inspection according to claim 4, characterized in that: A reset component is arranged between the fixing rod (18) and the rotating arm (19). A rubber plate (21) is fixedly connected to the side wall of the rotating arm (19).

6. The bottom-illuminated AOI inspection machine for inspection according to claim 5, wherein: The reset component includes a spring (20). One end of the spring (20) is fixedly connected to the side wall of the fixing rod (18). The other end of the spring (20) is fixedly connected to the side wall of the rubber plate (21).

7. The bottom-illuminated AOI inspection machine for inspection according to claim 6, wherein: On the upper surface of the bottom plate (1), a slide rail (22) is fixedly connected. A collection box (23) is slidably connected to the side wall of the slide rail (22).

8. The bottom-illuminated AOI inspection machine for inspection according to claim 7, characterized in that: The collection box (23) is arranged at the bottom on one side of the installation frame (16). A handle (24) is fixedly connected to the side wall of the collection box (23).

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