Automatic AOI detection equipment for circuit board production and processing

Abstract

The invention discloses automatic AOI (automatic optical inspection) equipment for circuit board production and processing, which comprises an unqualified product discharging conveying line, a qualified product discharging conveying line and a moving mechanism, the moving mechanism drives a feeding mechanism to reciprocate, and a visual inspection mechanism is arranged in the middle of the moving mechanism. A first carrying mechanism and a second carrying mechanism are arranged at the two ends of the moving mechanism, an unqualified product discharging conveying line is arranged on one side of the first carrying mechanism, and a qualified product discharging conveying line is arranged on one side of the second carrying mechanism. According to the invention, a to-be-detected circuit board can be carried to the moving mechanism through the second carrying mechanism, the moving mechanism can drive the circuit board to move to the detection station, the circuit board is detected through the visual detection mechanism, and during detection, the driving assembly drives the rotating table to rotate, so that the circuit board can be driven to rotate through the rotation of the rotating table; therefore, comprehensive detection of the circuit board is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board detection, in particular to an automated AOI detection device for circuit board production and processing. Background Art

[0002] AOI inspection equipment, also known as AOI optical automatic inspection equipment, has become an important inspection tool for ensuring product quality in the electronics manufacturing industry. When the AOI inspection equipment is in operation, it automatically scans the circuit board products through a high-definition CCD camera, collects images, and compares the test points with the qualified parameters in the database. After image processing, it detects defects on the target product and displays or marks them on the display for maintenance personnel to improve the process.

[0003] The existing announcement number CN110763683A discloses an automated AOI inspection equipment for circuit board production and processing, including a base, a top plate, a detection mechanism, a pushing mechanism and two storage mechanisms. The detection mechanism includes a detection component, a transmission component and two movable plates. The detection component includes a horizontal tube, a vertical tube, a telescopic unit, a first sealing plate, a camera and two adjustment units. The transmission component includes two conveyor belts and two drive components. The storage mechanism includes a first electric push rod, a bottom plate and two storage components. The automated AOI inspection equipment for circuit board production and processing facilitates the storage of circuit boards and adjusts the height position of circuit boards through the storage mechanism, cooperates with the pushing mechanism to realize the movement of the circuit boards, and uses the detection mechanism to simultaneously adjust the distance between the two movable plates and the height distance between the camera and the circuit board according to the size of the circuit board, so that the equipment can automatically realize the movement of the circuit board between the storage mechanism and the detection mechanism, facilitates automatic detection, and improves the practicality of the equipment.

[0004] Although the existing technology has achieved the inspection of circuit boards, due to the fixed shooting angle, it causes shooting blind spots in some positions of the circuit boards. In order to solve the above technical problems, we propose an automated AOI inspection equipment for circuit board production and processing. Summary of the Invention

[0005] The purpose of the present invention is to provide an automated AOI inspection device for circuit board production and processing to solve the problems in the prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automated AOI inspection equipment for circuit board production and processing, comprising a defective product unloading conveyor line, a qualified product unloading conveyor line and a moving mechanism, wherein the moving mechanism drives the feeding mechanism to move back and forth, a visual inspection mechanism is provided in the middle of the moving mechanism, a first conveying mechanism and a second conveying mechanism are provided at both ends of the moving mechanism, a defective product unloading conveyor line is provided on one side of the first conveying mechanism, and a qualified product unloading conveyor line is provided on one side of the second conveying mechanism.

[0007] Preferably, the visual detection mechanism includes a bracket, a first slider is installed on the top of the bracket, a second slider is slidably installed on the first slider, a third slider is installed on the top of the second slider, a fourth slider is slidably installed on the third slider, a fixed seat is installed on the top of the fourth slider, and a CCD is adjustably installed on one side of the fixed seat; a first clamping component and a second clamping component are adjustably installed on the bracket, a first fill light is adjustably installed on the first clamping component, and a second fill light is adjustably installed on the second clamping component.

[0008] Preferably, the first fill light and the second fill light are arranged in an inverted V shape.

[0009] Preferably, the moving mechanism includes a plurality of limit heads; the feeding mechanism includes a second cylinder, and the second cylinder drives the plug to move up and down.

[0010] Preferably, the feeding mechanism also includes a base plate, a top plate is slidably mounted on the top of the base plate, a frame is mounted on the top of the top plate, a platform is mounted on the top of the frame, a rotating table is rotatably mounted on the platform, and a driving component for driving the rotating table to rotate is mounted on the frame.

[0011] Preferably, the first transport mechanism and the second transport mechanism both consist of a robot and a suction cup assembly, and the suction cup assembly is mounted on the robot.

[0012] Preferably, the suction cup assembly includes a fixed plate, a first suction cup and a third suction cup are respectively installed at both ends of the fixed plate, a second suction cup is installed on one side of the fixed plate, and a first cylinder is installed on one end of the fixed plate at the third suction cup, and the first cylinder drives the fourth suction cup to move back and forth.

[0013] Preferably, the unqualified product unloading conveyor line and the qualified product unloading conveyor line both include a conveyor line body, and a limit plate is installed at one end of the conveyor line body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The circuit board to be inspected can be transported to the mobile mechanism through the second transport mechanism, and the mobile mechanism can drive the circuit board to the inspection station, and the circuit board is inspected by the visual inspection mechanism. During the inspection, the driving component drives the turntable to rotate, and the rotation of the turntable can drive the circuit board to rotate, thereby realizing a comprehensive inspection of the circuit board; if the inspection is qualified, the first transport mechanism can transport the qualified circuit board to the qualified product unloading conveyor line, and unload it through the qualified product unloading conveyor line; if the inspection is unqualified, the first transport mechanism can transport the unqualified circuit board to the unqualified product unloading conveyor line, and unload it through the unqualified product unloading conveyor line, thereby realizing the classification of qualified and unqualified products.

[0016] 2. The bracket is adjustably mounted with a first clamping assembly and a second clamping assembly, the first clamping assembly is adjustably mounted with a first fill light, the second clamping assembly is adjustably mounted with a second fill light, the first fill light and the second fill light are arranged in an inverted V shape, the two first fill lights and the second fill light enhance the fill light effect, thereby improving the clarity of the shooting.

[0017] 3. The platform is equipped with a rotating table, and the frame is equipped with a driving assembly for driving the rotating table. The rotation of the rotating table can drive the circuit board to rotate, thereby achieving a more comprehensive CCD shooting of the circuit board and reducing the blind area of ​​the shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the transport mechanism of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the suction cup assembly of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the visual detection mechanism of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the conveying line of the present invention.

[0025] In the figure: 1. Unqualified product unloading conveyor line; 2. Qualified product unloading conveyor line; 3. Visual inspection mechanism; 4. First conveying mechanism; 5. Moving mechanism; 6. Feeding mechanism; 7. Second conveying mechanism; 101. Conveyor line body; 102. Limit plate; 501. Limit head; 301. Bracket; 302. First clamping assembly; 303. First slider; 304. Second slider; 305. Third slider; 306. Fourth slider; 307. Fixing seat; 308. Adjusting bolt; 30 9. CCD; 310. Second clamping assembly; 311. Second fill light; 312. First fill light; 41. Robot arm; 42. Suction cup assembly; 421. Fixing plate; 422. First suction cup; 423. Second suction cup; 424. Third suction cup; 425. First cylinder; 426. Fourth suction cup; 601. Base plate; 602. Top plate; 603. Frame; 604. Platform; 605. Turntable; 606. Drive assembly; 607. Second cylinder; 608. Plug. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0027] See also Figure 1-6In an embodiment of the present invention, an automated AOI inspection equipment for circuit board production and processing includes a defective product unloading conveyor line 1, a qualified product unloading conveyor line 2 and a moving mechanism 5. The moving mechanism 5 drives a feeding mechanism 6 to move back and forth. The feeding mechanism 6 is used to drive the circuit board to move. The moving mechanism 5 can drive the feeding mechanism 6 to move. A visual inspection mechanism 3 is provided in the middle of the moving mechanism 5. The circuit board is inspected by the visual inspection mechanism 3. A first conveying mechanism 4 and a second conveying mechanism 7 are provided at both ends of the moving mechanism 5. The defective product unloading conveyor line 1 is provided on one side of the first conveying mechanism 4, and the qualified product unloading conveyor line 2 is provided on one side of the second conveying mechanism 7. The second conveying mechanism 7 can be used to The circuit board to be inspected is transported to the mobile mechanism 5, and the mobile mechanism 5 can drive the circuit board to move to the inspection station, and the circuit board is inspected by the visual inspection mechanism 3. During the inspection, the driving component 606 drives the rotating table 605 to rotate, and the rotation of the rotating table 605 can drive the circuit board to rotate, thereby realizing a comprehensive inspection of the circuit board; if the inspection is qualified, the first transport mechanism 4 can transport the qualified circuit board to the qualified product unloading conveyor line 2, and unload it through the qualified product unloading conveyor line 2; if the inspection is unqualified, the first transport mechanism 4 can transport the unqualified circuit board to the unqualified product unloading conveyor line 1, and unload it through the unqualified product unloading conveyor line 1, thereby realizing the classification of qualified and unqualified products.

[0028] The visual detection mechanism 3 includes a bracket 301, a first slider 303 is installed on the top of the bracket 301, a second slider 304 is slidably installed on the first slider 303, a third slider 305 is installed on the top of the second slider 304, a fourth slider 306 is slidably installed on the third slider 305, a fixed seat 307 is installed on the top of the fourth slider 306, the horizontal position of the fixed seat 307 can be adjusted by the slider, and then the horizontal position of the CCD 309 can be adjusted, the CCD 309 is adjustably installed on one side of the fixed seat 307, and the fixed seat is installed with an adjusting bolt 308 for adjusting the CCD 309, and the CCD can be adjusted by adjusting the bolt 308. 309; the bracket 301 is adjustably mounted with a first clamping assembly 302 and a second clamping assembly 310, the first clamping assembly 302 is adjustably mounted with a first fill light 312, the second clamping assembly 310 is adjustably mounted with a second fill light 311, the first fill light 312 and the second fill light 311 are arranged in an inverted V shape, the two first fill lights 312 and the second fill light 311 enhance the fill light effect, thereby improving the clarity of the shooting.

[0029] The moving mechanism 5 includes multiple limit heads 501; the feeding mechanism 6 includes a second cylinder 607, which drives the plug 608 to move up and down. The feeding mechanism 6 can be limited by the cooperation of the plug 608 and the limit head 501. The feeding mechanism 6 also includes a base plate 601, and a top plate 602 is slidably installed on the top of the base plate 601. A frame 603 is installed on the top of the top plate 602. A platform 604 is installed on the top of the frame 603. A rotating table 605 is rotatably installed on the platform 604. The frame 603 is installed with a driving component 606 that drives the rotating table 605 to rotate. The rotation of the rotating table 605 can drive the circuit board to rotate, thereby realizing a more comprehensive shooting of the circuit board by the CCD 309 and reducing the shooting blind area.

[0030] The first conveying mechanism 4 and the second conveying mechanism 7 are both composed of a manipulator 41 and a suction cup assembly 42. The suction cup assembly 42 is installed on the manipulator 41. The suction cup assembly 42 includes a fixing plate 421. The first suction cup 422 and the third suction cup 424 are respectively installed at both ends of the fixing plate 421. The second suction cup 423 is installed on one side of the fixing plate 421. The first cylinder 425 is installed on the end of the fixing plate 421 located at the third suction cup 424. The first cylinder 425 drives the fourth suction cup 426 to move back and forth. The position of the fourth suction cup 426 can be adjusted by the first cylinder 425 to adapt to circuit boards of different sizes.

[0031] The unqualified product unloading conveyor line 1 and the qualified product unloading conveyor line 2 both include a conveyor line body 101 , and a limit plate 102 is installed at one end of the conveyor line body 101 .

[0032] The working principle of the present invention is: the circuit board to be inspected can be transported to the mobile mechanism 5 through the second transport mechanism 7, the mobile mechanism 5 can drive the circuit board to the inspection station, and the circuit board is inspected by the visual inspection mechanism 3. During the inspection, the driving component 606 drives the rotating table 605 to rotate, and then the rotation of the rotating table 605 can drive the circuit board to rotate, thereby realizing a comprehensive inspection of the circuit board; if the inspection is qualified, the first transport mechanism 4 can transport the qualified circuit board to the qualified product unloading conveyor line 2, and unload it through the qualified product unloading conveyor line 2; if the inspection is unqualified, the first transport mechanism 4 can transport the unqualified circuit board to the unqualified product unloading conveyor line 1, and unload it through the unqualified product unloading conveyor line 1, thereby realizing the classification of qualified and unqualified products. The bracket 301 is adjustable with a first clamping assembly 302 and a second clamping assembly 310. The first clamping assembly 302 is adjustable with a first fill light 312, and the second clamping assembly 310 is adjustable with a second fill light 311. The first fill light 312 and the second fill light 311 are arranged in an inverted V-shape. The two first fill lights 312 and the second fill light 311 enhance the fill light effect, thereby improving the clarity of the image. A rotating table 605 is rotatably mounted on the platform 604. The frame 603 is equipped with a drive assembly 606 that drives the rotating table 605. The rotation of the rotating table 605 drives the circuit board, allowing the CCD 309 to capture a more comprehensive view of the circuit board, reducing blind spots.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automated AOI inspection equipment for circuit board production and processing, characterized by: The invention comprises a non-conforming product unloading conveyor line (1), a qualified product unloading conveyor line (2) and a moving mechanism (5), wherein the moving mechanism (5) drives a feeding mechanism (6) to move back and forth, a visual inspection mechanism (3) is provided in the middle of the moving mechanism (5), a first conveying mechanism (4) and a second conveying mechanism (7) are provided at both ends of the moving mechanism (5), a non-conforming product unloading conveyor line (1) is provided on one side of the first conveying mechanism (4), and a qualified product unloading conveyor line (2) is provided on one side of the second conveying mechanism (7).

2. The automated AOI inspection equipment for circuit board production and processing according to claim 1, characterized in that: The visual detection mechanism (3) comprises a bracket (301), a first slider (303) is mounted on the top of the bracket (301), a second slider (304) is slidably mounted on the first slider (303), a third slider (305) is mounted on the top of the second slider (304), a fourth slider (306) is slidably mounted on the third slider (305), a fixing seat (307) is mounted on the top of the fourth slider (306), a CCD (309) is adjustably mounted on one side of the fixing seat (307), and an adjusting bolt (308) for adjusting the CCD (309) is mounted on the fixing seat; a first clamping assembly (302) and a second clamping assembly (310) are adjustably mounted on the bracket (301), a first fill light (312) is adjustably mounted on the first clamping assembly (302), and a second fill light (311) is adjustably mounted on the second clamping assembly (310).

3. The automated AOI inspection equipment for circuit board production and processing according to claim 2, characterized in that: The first fill light (312) and the second fill light (311) are arranged in an inverted V shape.

4. The automated AOI inspection equipment for circuit board production and processing according to claim 1, characterized in that: The moving mechanism (5) includes a plurality of limiting heads (501); the feeding mechanism (6) includes a second cylinder (607), and the second cylinder (607) drives the plug (608) to move up and down.

5. The automated AOI inspection equipment for circuit board production and processing according to claim 4, characterized in that: The feeding mechanism (6) further comprises a base plate (601), a top plate (602) being slidably mounted on the top of the base plate (601), a frame (603) being mounted on the top of the top plate (602), a platform (604) being mounted on the top of the frame (603), a rotating table (605) being rotatably mounted on the platform (604), and a driving assembly (606) for driving the rotating table (605) to rotate being mounted on the frame (603).

6. The automated AOI inspection equipment for circuit board production and processing according to claim 1, characterized in that: The first transport mechanism (4) and the second transport mechanism (7) both consist of a manipulator (41) and a suction cup assembly (42), wherein the suction cup assembly (42) is mounted on the manipulator (41).

7. The automated AOI inspection equipment for circuit board production and processing according to claim 6, characterized in that: The suction cup assembly (42) comprises a fixing plate (421), wherein a first suction cup (422) and a third suction cup (424) are respectively mounted on both ends of the fixing plate (421), a second suction cup (423) is mounted on one side of the fixing plate (421), and a first cylinder (425) is mounted on one end of the fixing plate (421) located at the third suction cup (424), wherein the first cylinder (425) drives the fourth suction cup (426) to move back and forth.

8. The automated AOI inspection equipment for circuit board production and processing according to claim 1, characterized in that: The unqualified product unloading conveyor line (1) and the qualified product unloading conveyor line (2) both comprise a conveyor line body (101), and a limit plate (102) is installed at one end of the conveyor line body (101).

Images