CN219455979U

CN219455979U - Circuit board AOI optical detection device

Info

Publication number: CN219455979U
Application number: CN202320303249.4U
Authority: CN
Inventors: 刘益; 周彬; 汪斌
Original assignee: Huizhou Chengyu Technology Co ltd
Current assignee: Huizhou Chengyu Technology Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-08-01
Anticipated expiration: 2033-02-24

Abstract

The utility model discloses an AOI optical detection device for a circuit board, which relates to the technical field of circuit board detection and aims at the problems that in the existing AOI automatic optical detection device, a large amount of dust is easily attached to the surface of a PCB circuit board in the production process in the detection process of the PCB circuit board, and the detection effect is affected. The utility model has novel structure, realizes cleaning of dust on the surface of the circuit board and improves the accuracy of the detection result of the circuit board.

Description

Circuit board AOI optical detection device

Technical Field

The utility model relates to the technical field of circuit board detection, in particular to an AOI optical detection device for a circuit board.

Background

AOI is a widely used measuring means in industries such as liquid crystal and microelectronics, and is equipment for detecting common defects encountered in welding production based on an optical principle. AOI is a new test technology, but has been developed rapidly, and AOI automatic optical detectors are proposed by many manufacturers. When the automatic detection is carried out, the machine automatically scans the PCB through the camera, images are collected, the tested welding spots are compared with qualified parameters in the database, defects on the PCB are detected through image processing, and the defects are displayed or marked through the display or the automatic mark for repair by maintenance personnel. After the copper foil is etched, the etched circuit needs to be inspected, scanned by a pre-machine, and then manually checked to mark a problem point.

The existing AOI automatic optical detection device is characterized in that in the detection process of a PCB, a large amount of dust is attached to the surface of the PCB in the production process, so that the detection effect is affected. Therefore, to solve such a problem, we propose an AOI optical inspection device for circuit board.

Disclosure of Invention

The utility model provides an AOI optical detection device for a circuit board, which solves the problems that in the existing AOI automatic optical detection device, a large amount of dust is attached to the surface of the PCB circuit board in the production process in the detection process of the PCB circuit board, and the detection effect is affected.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a circuit board AOI optical detection device, includes the workstation, one side fixed mounting of workstation has the controller, rotate between the relative both sides of workstation and install a plurality of transmission shafts that are linear array and distribute, a plurality of around being equipped with the conveyer belt between the transmission shaft, one side fixed mounting of workstation has first motor, the output shaft of first motor runs through and extends to the workstation inside and be close to fixed connection between the transmission shaft of first motor, be electric connection between first motor and the controller, fixed mounting has the mounting bracket on the workstation, be provided with clearance mechanism on the mounting bracket, fixed mounting has two fly leaves that are symmetrical distribution on the workstation, two fixed mounting has the fixed plate between the fly leaf, the bottom of fixed plate is provided with the detection camera, be electric connection between detection camera and the controller, the below of workstation is provided with the collecting box.

Preferably, the cleaning mechanism comprises an electric cylinder, a brush disc and a driving motor, the electric cylinder is fixedly arranged at the top end of the mounting frame, the electric cylinder is electrically connected with the controller, the output end of the electric cylinder penetrates through the lower portion extending to the mounting frame and is fixedly provided with the driving motor, the driving motor is electrically connected with the controller, and the brush disc is fixedly arranged at the output end of the driving motor.

Preferably, two fixing blocks which are symmetrically distributed are respectively and fixedly arranged on two sides, away from each other, of the workbench, a limiting rod and a first screw rod are respectively and rotatably arranged between the two fixing blocks, a second motor is fixedly arranged on one side of the fixing block, the second motor is electrically connected with the controller, and an output end of the second motor penetrates through and extends into the fixing block and is fixedly connected with the end part of the first screw rod.

Preferably, a plurality of through holes distributed in an array are formed in the conveyor belt, scraping strips are fixedly arranged between two opposite sides of the workbench, the scraping strips are located between the conveyor belt and the collecting box, and the conveyor belt and the scraping strips are in sliding interference.

Preferably, the second screw rod is rotatably arranged in the collecting box, the second screw rod is threaded and penetrates through the scraping plate, the scraping plate is movably abutted against the inner side wall of the collecting box, a third motor is fixedly arranged on one side of the collecting box, the third motor is electrically connected with the controller, and the output end of the third motor penetrates through and extends to the inside of the collecting box and is fixedly connected with the end part of the second screw rod.

Preferably, an opening is formed in one side, far away from the third motor, of the collecting box, a baffle is movably arranged at the opening, a lock catch is arranged between the workbench and the collecting box, and the lock catch is in close contact with one side of the baffle.

The beneficial effects of the utility model are as follows:

1. through setting up mounting bracket, electronic jar, driving motor and brush dish, detect the front to the circuit board, start electronic jar through the controller, electronic jar passes through the height of its output regulation brush dish until brush dish and circuit board laminating, at starting driving motor, driving motor drives the brush dish and rotates to can clear up the dust on the circuit board, reach the effect of being convenient for clear up the dust on the circuit board, and then improved the accuracy that the circuit board detected.

2. Through setting up third motor, second screw rod, scraper blade and scraping strip, the dust after the clearance can have the through-hole on the conveyer belt leak into the collecting box in, when the conveyer belt transmission, the surface of conveyer belt can be through scraping the strip, scrapes the strip and can carry out secondary clearance to the surface of conveyer belt, starts the third motor this moment, and the third motor drives the second screw rod and rotates, and the scraper blade can follow the length direction motion of second screw rod under the restriction of two lateral walls of collecting box, has reached the effect that can concentrate the clearance with the dust in the collecting box.

In summary, the utility model can clean dust on the surface of the circuit board, improves the accuracy of the detection result of the circuit board, solves the problems that the surface of the PCB circuit board is easy to attach a large amount of dust in the production process to influence the detection effect in the detection process of the PCB circuit board by the conventional AOI automatic optical detection device, and is suitable for popularization.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a side view of the present utility model;

fig. 3 is a cross-sectional view of the present utility model.

Reference numerals in the drawings: 1. a collection box; 2. a work table; 3. a first motor; 4. a conveyor belt; 5. a through hole; 6. a mounting frame; 7. an electric cylinder; 8. a brush plate; 9. a movable plate; 10. a fixing plate; 11. a fixed block; 12. a controller; 13. a first screw; 14. a second motor; 15. a limit rod; 16. locking; 17. a baffle; 18. a scraper; 19. a third motor; 20. a second screw; 21. scraping the strip; 22. a transmission shaft; 23. a drive motor; 24. and detecting a camera.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-3, a circuit board AOI optical detection device, including workstation 2, one side fixed mounting of workstation 2 has controller 12, rotate between the relative both sides of workstation 2 and install a plurality of transmission shafts 22 that are linear array distribution, around being equipped with conveyer belt 4 between a plurality of transmission shafts 22, one side fixed mounting of workstation 2 has first motor 3, the output shaft of first motor 3 runs through and extends to the inside of workstation 2 and with be close to fixed connection between the transmission shaft 22 of first motor 3, be electric connection between first motor 3 and the controller 12, fixed mounting has mounting bracket 6 on the workstation 2, be provided with clearance mechanism on the mounting bracket 6, fixed mounting has two movable plates 9 that are symmetrical distribution on the workstation 2, fixed mounting has fixed plate 10 between two movable plates 9, the bottom of fixed plate 10 is provided with the detection camera 24, be electric connection between detection camera 24 and the controller 12, the below of workstation 2 is provided with collecting box 1, set up a plurality of through-holes 5 that are array distribution on the conveyer belt 4, fixed mounting has scraper 21 between the opposite both sides of workstation 2, and the scraper 21 is located the conveyer belt 21 and the scraper 21 when the scraper 21 is located the conveyer belt 21, the scraper belt 21 can slide to the position when the scraper 21, the scraper belt 21 is located in the conveyer belt 21, the scraper belt 21 is located to the position when the scraper belt 21, the scraper belt 21 is left in the conveyer belt 21.

Referring to fig. 2-3, the cleaning mechanism comprises an electric cylinder 7, a brush disc 8 and a driving motor 23, wherein the electric cylinder 7 is fixedly installed at the top end of the mounting frame 6, the electric cylinder 7 is electrically connected with the controller 12, the output end of the electric cylinder 7 penetrates through and extends to the lower side of the mounting frame 6 and is fixedly provided with the driving motor 23, the driving motor 23 is electrically connected with the controller 12, and the brush disc 8 is fixedly installed at the output end of the driving motor 23.

Referring to fig. 1-3, two symmetrically distributed fixing blocks 11 are respectively and fixedly installed on two sides of the workbench 2, a limiting rod 15 and a first screw rod 13 are respectively and rotatably installed between the two fixing blocks 11, a second motor 14 is fixedly installed on one side of the fixing block 11, the second motor 14 is electrically connected with the controller 12, an output end of the second motor 14 penetrates through the fixing block 11 and is fixedly connected with the end portion of the first screw rod 13, the second motor 14 is started, the second motor 14 drives the first screw rod 13 to rotate, and under the limitation of the limiting rod 15, the two movable plates 9 can move along the length direction of the first screw rod 13, and then the distance between the detection camera 24 and the brush disc 8 can be adjusted.

Referring to fig. 3, a second screw 20 is rotatably installed in the collecting box 1, a scraping plate 18 is threaded through the second screw 20, the scraping plate 18 is movably abutted against the inner side wall of the collecting box 1, a third motor 19 is fixedly installed on one side of the collecting box 1, the third motor 19 is electrically connected with the controller 12, an output end of the third motor 19 penetrates through the collecting box 1 and is fixedly connected with the end of the second screw 20, an opening is formed in one side, away from the third motor 19, of the collecting box 1, a baffle 17 is movably arranged at the opening, a lock catch 16 is arranged between the workbench 2 and the collecting box 1, the lock catch 16 is closely contacted with one side of the baffle 17, the baffle 17 can be pulled out from the collecting box 1 by opening the lock catch 16, and dust stored in the collecting box 1 can be concentrated.

Working principle: when the device is used, the second motor 14 is started through the controller 12 according to the specification of the circuit board to be detected, the second motor 14 drives the first screw 13 to rotate, so that the movable plate 9 can be driven to move along the length direction of the first screw 13, the interval distance between the detection camera 24 and the brush disc 8 can be adjusted, the brush disc 8 can detect the circuit board to be detected through the detection camera 24 after cleaning, the circuit board to be detected is placed on the conveyor belt 4, the electric cylinder 7 is started through the controller 12, the height of the brush disc 8 is adjusted through the output end of the electric cylinder 7, the brush disc 8 can be closely contacted with the circuit board to be detected, the driving motor 23 is started through the controller 12, the brush disc 8 is driven to rotate by the driving motor 23, the first motor 3 is started through the controller 12, the first motor 3 drives the transmission shaft 22 to rotate, thereby can drive conveyer belt 4 and rotate, conveyer belt 4 can drive the circuit board that waits to detect at the moving in-process and move, thereby can let the circuit board that waits to detect complete through brush dish 8, let brush dish 8 wait to detect the circuit board and clear up, the dust that produces after the clearance can leak into collecting box 1 through the through-hole 5 of seting up on conveyer belt 4, at the moving in-process of conveyer belt 4, conveyer belt 4 can pass through scraping strip 21, thereby can strike off remaining dust on the conveyer belt 4 to collecting box 1, start third motor 19 through controller 12, third motor 19 drives second screw rod 20 and rotates, thereby can drive scraper blade 18 along the length direction motion of second screw rod 20, and then can push away the dust in the collecting box 1 to the other end by collecting box 1, open baffle 17 again can discharge the dust in the collecting box 1.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a circuit board AOI optical detection device, includes workstation (2), its characterized in that, one side fixed mounting of workstation (2) has controller (12), rotate between the opposite both sides of workstation (2) and install a plurality of transmission shafts (22) that are linear array distribution, a plurality of around being equipped with conveyer belt (4) between transmission shafts (22), one side fixed mounting of workstation (2) has first motor (3), the output shaft of first motor (3) runs through and extends to inside workstation (2) and with be close to be fixed connection between transmission shafts (22) of first motor (3), be electric connection between first motor (3) and controller (12), fixed mounting has mounting bracket (6) on workstation (2), be provided with clearance mechanism on mounting bracket (6), fixed mounting has two fly leaves (9) that are symmetrical distribution on workstation (2), fixed mounting has fixed plate (10) between fly leaves (9), the bottom of fixed plate (10) runs through and extends to inside and is close to be fixed connection between transmission shafts (22) of first motor (3), be electric connection between first motor (3) and controller (12), be electric connection has between camera (24) and workstation (2).

2. The circuit board AOI optical detection device according to claim 1, wherein the cleaning mechanism comprises an electric cylinder (7), a brush disc (8) and a driving motor (23), the electric cylinder (7) is fixedly installed at the top end of the mounting frame (6), the electric cylinder (7) is electrically connected with the controller (12), the output end of the electric cylinder (7) penetrates through the lower part of the mounting frame (6) and is fixedly provided with the driving motor (23), the driving motor (23) is electrically connected with the controller (12), and the brush disc (8) is fixedly installed at the output end of the driving motor (23).

3. The circuit board AOI optical detection device according to claim 1, wherein two symmetrically distributed fixed blocks (11) are fixedly installed on two sides, away from each other, of the workbench (2), a limiting rod (15) and a first screw rod (13) are rotatably installed between the two fixed blocks (11) respectively, a second motor (14) is fixedly installed on one side of the fixed blocks (11), the second motor (14) is electrically connected with the controller (12), and an output end of the second motor (14) penetrates through and extends into the fixed blocks (11) and is fixedly connected with the end portion of the first screw rod (13).

4. The circuit board AOI optical detection device according to claim 1, wherein a plurality of through holes (5) distributed in an array are formed in the conveyor belt (4), scraping strips (21) are fixedly arranged between two opposite sides of the workbench (2), the scraping strips (21) are located between the conveyor belt (4) and the collecting box (1), and the conveyor belt (4) is in sliding contact with the scraping strips (21).

5. The circuit board AOI optical detection device according to claim 1, wherein a second screw rod (20) is rotatably installed in the collecting box (1), a scraping plate (18) is penetrated through threads on the second screw rod (20), the scraping plate (18) is movably abutted against the inner side wall of the collecting box (1), a third motor (19) is fixedly installed on one side of the collecting box (1), the third motor (19) is electrically connected with the controller (12), and the output end of the third motor (19) penetrates through the collecting box (1) and is fixedly connected with the end part of the second screw rod (20).

6. The circuit board AOI optical detection device according to claim 5, wherein an opening is formed in one side, far away from the third motor (19), of the collecting box (1), a baffle (17) is movably arranged at the opening, a lock catch (16) is arranged between the workbench (2) and the collecting box (1), and the lock catch (16) is in close contact with one side of the baffle (17).