Circuit board AOI equipment

Abstract

The utility model discloses circuit board AOI equipment, which relates to the field of circuit board detection equipment and comprises a case, an annular conveying line is arranged in the case, a jig used for bearing a circuit board is arranged on the conveying line, an AOI detection structure is arranged on the inner side of the conveying line in the case, and the AOI detection structure is arranged on the inner side of the conveying line. And a chromaticity detection structure is arranged at a subsequent station of the AOI detection structure. According to the utility model, the automatic annular assembly line is used, the loading and unloading stations are respectively arranged on the two sides of the assembly line, the AOI equipment on the assembly line is used for carrying out optical detection on the circuit board mounted in the jig, and workers only need to carry out re-judgment and loading and unloading at the loading and unloading stations, so that the detection accuracy and the detection efficiency of the circuit board are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board detection equipment, in particular to a circuit board AOI equipment. Background Art

[0002] The in-car Dalian screen is a large-size screen located in the center console and instrument panel of a traditional car. It can display information such as the car's speed, engine speed or navigation on the screen. It can also control functions in the car such as air conditioning, seat ventilation and massage through the screen. The central control Dalian screen is the trend of future automobile development.

[0003] The existing in-vehicle central control Dalian screen requires a main control circuit board installed with various electronic components to control the electronic equipment in the car and display the information content on the Dalian screen. After the production of this main control circuit board is completed, it needs to go through multiple processes for inspection before it can be installed on the vehicle. The existing circuit board inspection method is mostly to manually connect the circuit board's lines and then conduct visual inspection.

[0004] With regard to the above-mentioned related technologies, the existing circuit board detection methods mostly use manual detection. Various detection errors are inevitable in manual detection, which leads to various faults after the circuit board is installed on the vehicle, seriously affecting the user's driving safety. At the same time, the speed of manual detection of circuit boards is also slow, and it is difficult to conduct rapid detection in large quantities, and it cannot adapt to the automated assembly line production of smart car factories. In summary, the existing circuit board detection equipment has the problems of low detection efficiency and poor detection accuracy. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a circuit board AOI device to solve the technical problems of low detection efficiency and poor detection accuracy of existing circuit board detection equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board AOI device, comprising a chassis, a ring-shaped conveyor line is arranged in the chassis, a fixture for carrying circuit boards is arranged on the conveyor line, an AOI detection structure is arranged on the inner side of the conveyor line in the chassis, and a chromaticity detection structure is arranged at the subsequent workstation of the AOI detection structure.

[0007] By adopting the above technical solution, using an automated circular assembly line, setting up loading and unloading stations on both sides of the assembly line, and using the AOI equipment on the assembly line to perform optical inspection on the circuit boards installed in the fixture, manual work only needs to be done at the loading and unloading stations to re-inspect and load and unload materials, which effectively improves the inspection accuracy and efficiency of the circuit boards.

[0008] The utility model is further configured that the AOI detection structure includes an AOI camera facing vertically downward, and a horizontal adjustment structure is arranged at the AOI camera.

[0009] By adopting the above technical solution, the circuit board in the fixture is optically inspected using a vertically downward AOI camera, which effectively improves the inspection accuracy of the circuit board and prevents the problems of missed inspection and wrong inspection caused by manual inspection.

[0010] The utility model is further configured that the mounting bracket of the AOI camera is provided with a left-right adjustment mechanism and a front-back adjustment mechanism.

[0011] By adopting the above technical solution, the lens of the AOI camera can be aligned with the circuit board body in the fixture.

[0012] The utility model is further configured that a focusing mechanism is arranged in front of the lens of the AOI camera.

[0013] By adopting the above technical solution, the AOI camera is focused through the focusing structure in front of the AOI camera lens, so that the picture taken by the AOI camera can be clearer, and the accuracy of AOI detection can be further improved.

[0014] The utility model is further configured that the AOI detection structure is provided with side cameras on both sides of the AOI camera, and the side cameras are arranged obliquely to the conveying line.

[0015] By adopting the above technical solution, the accuracy of AOI detection is further improved.

[0016] The utility model is further configured that a fill light structure is arranged between the bottom end of the AOI detection structure and the conveying line.

[0017] By adopting the above technical solution, the situation where unclear images are taken at positions on the circuit board due to insufficient light can be avoided.

[0018] The utility model is further configured that the fixture includes a frame, a top surface of the frame is provided with a carrier plate, and a bottom end of the frame is provided with a bottom plate.

[0019] By adopting the above technical solution, the AOI camera can take clearer photos of the circuit board, while also maintaining stable transportation of the circuit board on the conveyor line.

[0020] The utility model is further configured that two mutually parallel drive chains are arranged in the conveyor line, and the drive chains are driven by drive wheels.

[0021] By adopting the above technical solution, the driving wheel causes the driving chain to circulate while rotating, and the fixture is installed on the driving chain and moves along with the driving chain.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] The utility model uses an automated circular assembly line, sets loading and unloading stations on both sides of the assembly line, and uses the AOI equipment on the assembly line to perform optical inspection on the circuit board installed in the fixture. Manual workers only need to perform re-inspection and loading and unloading at the loading and unloading stations, which effectively improves the inspection accuracy and inspection efficiency of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 It is another perspective stereogram of the utility model;

[0026] Figure 3 It is a three-dimensional diagram of the internal structure of the utility model;

[0027] Figure 4 It is a three-dimensional diagram of the conveying structure of the utility model;

[0028] Figure 5 This is a three-dimensional diagram of the internal structure of the conveyor line of the utility model;

[0029] Figure 6 This is an exploded view of the conveying fixture of the utility model;

[0030] Figure 7 This is a three-dimensional diagram of the AOI mechanism of the utility model;

[0031] Figure 8 It is an exploded stereogram of the AOI mechanism of the utility model;

[0032] Fig. 9 This is an exploded view of the AOI camera of the present utility model;

[0033] Fig.10 This is a three-dimensional diagram of the fill light structure of the utility model;

[0034] Fig.11 It is a three-dimensional diagram of the chromaticity detection structure of the utility model.

[0035] In the figure: 1. Chassis; 2. Conveyor line; 201. Driving wheel; 202. Driving chain; 3. Fixture; 301. Frame; 302. Carrier plate; 303. Bottom plate; 4. AOI detection structure; 401. AOI camera; 402. Side camera; 403. Left and right adjustment mechanism; 404. Front and back adjustment mechanism; 405. Focusing mechanism; 5. Chroma detection structure; 6. Fill light structure. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0037] The following describes an embodiment of the utility model based on its overall structure.

[0038] Embodiment 1

[0039] A circuit board AOI equipment, such as Figure 1-11 As shown, it includes a chassis 1. Specifically, the two sides of the chassis 1 are a loading side and a unloading side, respectively. The worker loads the circuit board into the jig 3 on the loading side, and takes the circuit board out of the jig 3 on the unloading side. Specifically, the circuit board is the main control circuit board of the vehicle-mounted Dalian screen. The staff can also manually re-inspect the circuit board on the unloading side of the chassis 1 to further improve the accuracy of circuit board detection. An annular conveyor line 2 is arranged in the chassis 1, and a jig 3 for carrying the circuit board is arranged on the conveyor line 2. An AOI detection structure 4 is arranged on the inner side of the conveyor line 2 in the chassis 1, and a chromaticity detection structure 5 is arranged at the subsequent station of the AOI detection structure 4. Specifically, the AOI detection technology is an optical automatic detection technology, and the function of the chromaticity detection structure 5 is to optically re-inspect the circuit board. A fill light structure 6 is arranged between the bottom end of the AOI detection structure 4 and the conveyor line 2. The light emitted by the fill light structure 6 illuminates the surface of the circuit board, providing sufficient brightness for the AOI camera 401 to shoot, thereby avoiding the situation where the position on the circuit board is not illuminated clearly.

[0040] See also Figure 3-6 The fixture 3 includes a frame 301, a carrier plate 302 is arranged on the top surface of the frame 301, and a bottom plate 303 is arranged at the bottom end of the frame 301. The frame 301 is used to carry the circuit board body, and the bottom plate 303 in the frame 301 is used to place the circuit board. The carrier plate 302 on the frame 301 is used to provide a shooting frame for the AOI camera 401, so that the AOI camera 401 can shoot the circuit board more clearly, and at the same time, it also maintains the stable transportation of the circuit board on the conveyor line 2. Two parallel driving chains 202 are arranged in the conveyor line 2. The driving chain 202 is driven by the driving wheel 201. The driving wheel 201 makes the driving chain 202 circulate in a rotating state, and the fixture 3 is installed on the driving chain 202 and moves with the driving chain 202.

[0041] See also Figure 3-4 , Figure 7-11The AOI detection structure 4 includes an AOI camera 401 facing vertically downward. A horizontal adjustment structure is provided at the AOI camera 401. The AOI camera facing vertically downward is used to perform optical detection on the circuit board in the fixture 3, which effectively improves the detection accuracy of the circuit board and prevents the problems of missed detection and wrong detection in manual detection. A left-right adjustment mechanism 403 and a front-back adjustment mechanism 404 are provided on the mounting bracket of the AOI camera 401. The position of the AOI camera in the horizontal direction is adjusted by the front-back adjustment mechanism 404 and the left-right adjustment mechanism 403 of the AOI camera 401, so that the lens of the AOI camera can be aligned with the circuit board body in the fixture 3. A focusing mechanism 405 is provided in front of the lens of the AOI camera 401. The AOI camera 401 is focused by the focusing structure in front of the lens of the AOI camera 401, so that the picture taken by the AOI camera can be clearer, which can further improve the accuracy of AOI detection.

[0042] Embodiment 2

[0043] A circuit board AOI equipment, such as Figure 1-11 As shown, on the basis of Example 1, the difference from Example 1 lies in that the AOI detection structure 4 is provided with side cameras 402 on both sides of the AOI camera 401, and the side cameras 402 are arranged obliquely to the conveyor line 2. The side cameras 402 on both sides of the AOI camera 401 respectively shoot toward the fixture 3 at angles different from those of the AOI camera 401, and fully utilize the three-dimensional shooting angle of the components to fully and accurately shoot and detect the electronic components on the circuit board, thereby further improving the accuracy of AOI detection.

[0044] The working principle of the utility model is as follows: the circuit board to be inspected is placed in the jig 3 at the feeding end of the chassis 1, the circuit board moves in the jig 3 along the direction of the conveyor line 2, and is inspected by the AOI inspection structure 4 and the chromaticity inspection structure 5 in turn, and finally is manually re-inspected at the unloading end of the chassis 1. After an accurate inspection result of the circuit board is obtained, the circuit board is removed from the jig 3, and the unloaded jig is transported along the conveyor line 2 for half a circle and then returns to the feeding end of the chassis 1.

[0045] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A circuit board AOI device, comprising a chassis (1), characterized in that: An annular conveyor line (2) is arranged in the chassis (1), a jig (3) for carrying a circuit board is arranged on the conveyor line (2), an AOI detection structure (4) is arranged on the inner side of the conveyor line (2) in the chassis (1), and a chromaticity detection structure (5) is arranged at a subsequent station of the AOI detection structure (4).

2. The circuit board AOI equipment according to claim 1, characterized in that: The AOI detection structure (4) comprises an AOI camera (401) facing vertically downward, and a horizontal adjustment structure is arranged at the AOI camera (401).

3. The circuit board AOI equipment according to claim 2, characterized in that: The mounting bracket of the AOI camera (401) is provided with a left-right adjustment mechanism (403) and a front-back adjustment mechanism (404).

4. The circuit board AOI equipment according to claim 2, characterized in that: A focusing mechanism (405) is arranged in front of the lens of the AOI camera (401).

5. The circuit board AOI equipment according to claim 1, characterized in that: The AOI detection structure (4) is provided with side cameras (402) on both sides of the AOI camera (401), and the side cameras (402) are arranged obliquely to the conveying line (2).

6. The circuit board AOI equipment according to claim 1, characterized in that: A fill light structure (6) is provided between the bottom end of the AOI detection structure (4) and the conveying line (2).

7. The circuit board AOI equipment according to claim 1, characterized in that: The fixture (3) comprises a frame (301), a carrier plate (302) is arranged on the top surface of the frame (301), and a bottom plate (303) is arranged at the bottom end of the frame (301).

8. The circuit board AOI equipment according to claim 1, characterized in that: Two mutually parallel drive chains (202) are arranged in the conveyor line (2), and the drive chains (202) are driven by drive wheels (201).

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