Intelligent overhauling machine for overhauling appearance of PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCB maintenance, and particularly discloses an intelligent maintenance machine for maintaining the appearance of a PCB, which comprises a maintenance shell and a workbench, a computer is arranged on the workbench, and a camera facing a maintenance bottom plate is arranged in the maintenance shell; a transverse position adjusting mechanism is arranged on the workbench and used for driving the overhauling bottom plate to move. A telescopic rod is arranged in the maintenance shell, the output end of the telescopic rod is connected with a mounting plate, a rotating shaft is arranged on the mounting plate, and the rotating shaft is connected with a two-way plate in an inserted mode; the rotating shaft is connected with a power motor for driving the rotating shaft to rotate; a driving motor is installed on one side of the two-way plate, and the output end of the driving motor is connected with a wiping head. According to the utility model, the transverse position adjusting mechanism is arranged in the maintenance shell and can drive the PCB to move in the maintenance shell, the position of the PCB is adjusted, and the shooting area of the camera can be aligned with the area to be maintained on the PCB.

Description

Technical Field

[0001] This utility model belongs to the field of PCB board repair technology, specifically relating to an intelligent repair machine for inspecting the appearance of PCB boards. Background Technology

[0002] After the PCB completes double-sided AOI inspection, its detailed inspection status will be recorded in the system. For PCBs with inspection problems, after they are sent into the repair machine, their corresponding numbers are entered into the repair machine, which can then magnify the area to be inspected inside the PCB through the camera inside the repair machine.

[0003] However, the following problems exist when magnifying the area to be inspected on the PCB board using a repair machine:

[0004] First, the effective shooting area of ​​the camera is limited, and there are often situations where the shooting area cannot cover the entire PCB board. In this case, the position of the PCB board needs to be manually adjusted.

[0005] Secondly, when magnifying a PCB, impurities adhering to the PCB can easily create blind spots in the photographic area, obstructing the view of the inspection personnel and hindering subsequent inspection work. Therefore, this application proposes an intelligent inspection machine for inspecting the appearance of PCB boards. Utility Model Content

[0006] The purpose of this invention is to provide an intelligent inspection machine for inspecting the appearance of PCB boards, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an intelligent inspection machine for inspecting the appearance of PCB boards, including an inspection housing and a workbench, with a computer installed on the workbench and a camera facing the inspection base plate installed inside the inspection housing.

[0008] The workbench is equipped with a lateral position adjustment mechanism, which is used to move the maintenance base plate.

[0009] The maintenance housing is equipped with a telescopic rod, the output end of which is connected to a mounting plate. A rotating shaft is provided on the mounting plate, and the rotating shaft is inserted into a two-way plate.

[0010] The rotating shaft is connected to a power motor for driving its rotation;

[0011] A drive motor is installed on one side of the two-way plate. The output end of the drive motor is connected to the wiping head. A storage cavity is provided inside the wiping head. A lower through hole is provided at the bottom of the storage cavity. The top of the storage cavity is connected to the cavity in the wiping liquid inlet sleeve through an upper through hole. The cavity in the wiping liquid inlet sleeve is connected to the inlet pipe. The inlet pipe is connected to the wiping liquid storage tank.

[0012] Preferably, the rotating shaft is inserted into the middle position of the two-way plate.

[0013] Preferably, a feed valve is installed at the feed pipe to control the opening and closing of the channel between the feed pipe and the wiping liquid feed sleeve.

[0014] Preferably, a drying element is installed on the side of the two-way plate away from the wiping head, the outside of the drying element is wrapped with a wiping cloth, and the drying element is connected to a heating device for heating it.

[0015] Preferably, a lifting mechanism is provided inside the maintenance housing, the lifting mechanism is connected to a lifting plate, a telescopic rod is installed on the lifting plate, and several pressure rods are installed on the lower side of the lifting plate.

[0016] Preferably, the storage cavity is connected to the adsorption sponge through the lower through hole, the adsorption sponge is wrapped around the outside of the wiping head, and the wiping head is connected to the two-way plate through the bearing seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] I. This utility model is equipped with a horizontal position adjustment mechanism, which can drive the PCB board to move inside the inspection housing, adjust the position of the PCB board, and enable the camera's shooting area to be aligned with the area to be inspected on the PCB board.

[0019] II. When foreign objects obstruct the inspection area of ​​the PCB board in this utility model, the inspection area can be moved to the position of the wiping head in the two-way plate through the lateral position adjustment mechanism. At this time, the rotating shaft connected to the two-way plate is rotated, causing the wiping head to rotate downwards and contact the PCB board. The drive motor connected to the wiping head can drive the wiping head to rotate. At the same time, the cleaning liquid stored in the wiping liquid storage tank enters the storage cavity through the feed pipe and the upper through hole. Then, the cleaning liquid in the storage cavity is immersed in the adsorption sponge with adsorption function through the lower through hole. The adsorption sponge rotates together with the wiping head to wipe the PCB board. The telescopic rod can drive the wiping head to move in a direction perpendicular to the lateral position adjustment mechanism to wipe away oily impurities and dust from various parts of the PCB board and push other impurities away from the inspection area on the PCB board. In this way, the obstruction in the inspection area of ​​the PCB board is removed, and the inspection area on the PCB board can be magnified and viewed by the camera. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the intelligent inspection machine used for inspecting the appearance of PCB boards in this utility model.

[0021] Figure 2 This utility model Figure 1A schematic diagram of the structure after the maintenance casing has been removed.

[0022] Figure 3 This is one of the structural schematic diagrams of the two-way plate and wiping head in this utility model.

[0023] Figure 4 This is the second schematic diagram of the structure of the two-way plate and the wiping head in this utility model.

[0024] In the diagram: 1. Inspection housing; 2. Workbench; 3. Computer; 4. Camera; 5. Inspection base plate; 6. Lateral position adjustment mechanism; 8. Telescopic rod; 9. Two-way plate; 10. Rotating shaft; 11. Wiping head; 1101. Storage cavity; 1102. Lower through hole; 12. Absorbent sponge; 13. Wiping liquid inlet sleeve; 14. Bearing seat; 15. Drive motor; 16. Feed pipe; 17. Feed valve; 18. Wiping liquid storage tank; 19. Drying component; 20. Wiping cloth; 21. Heating device; 22. Lifting mechanism; 23. Lifting plate; 24. Pressure rod. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-4 An intelligent inspection machine for PCB board appearance inspection includes an inspection housing 1 and a workbench 2. A computer 3 is installed on the workbench 2, and a camera 4 facing the inspection base plate 5 is installed inside the inspection housing 1. Before leaving the factory, the PCB board needs to be inspected. After completing double-sided AOI inspection, the detailed inspection status is recorded into the system, which is connected to the computer 3. For PCB boards with inspection problems, repair is required. By logging the PCB board into the computer 3 and connecting it with the AOI inspection result system, the problem of the PCB board can be identified. The PCB board is placed inside the inspection housing 1, and the camera 4 is used to take pictures. Through the magnification function of the camera 4, the details of the PCB board that needs repair are presented, which facilitates subsequent repair. The system is connected to the computer 3, which makes it convenient for repair personnel to find and compare previous inspection data. During the inspection, it is easier to find defects on the PCB board and repair them. The whole process is more intelligent.

[0027] The effective shooting area of ​​the camera 4 is limited and may not be able to cover the entire PCB board. Therefore, a horizontal position adjustment mechanism 6 is provided on the workbench 2. The horizontal position adjustment mechanism 6 is used to move the inspection base plate 5 within its stroke. The PCB board is placed on the inspection base plate 5. In this way, by adjusting the position of the inspection base plate 5, the position of the PCB board is adjusted so that each position of the PCB board is aligned with the camera 4. After the PCB board is placed into the inspection housing 1, its position can be adjusted so that it is aligned with the camera 4. There will be no situation where the PCB board cannot be displayed due to insufficient shooting area of ​​the camera 4.

[0028] During the handling of PCB boards, other impurities (mainly lubricating oil from the production process and waste from PCB cutting) easily adhere to them. Therefore, when the camera 4 magnifies the area to be inspected, it is often impossible to see the actual problem of the PCB board due to obstruction by impurities. Therefore, when the area to be inspected magnified by the camera 4 is obstructed and cannot be seen clearly during manual inspection, it is necessary to remove the impurities. Therefore, a telescopic rod 8 is installed inside the inspection housing 1. The telescopic rod 8 is an electric telescopic rod, which is more flexible and has a faster response during operation. The output end of the telescopic rod 8 is connected to the mounting plate, and a rotating shaft 10 is installed on the mounting plate. The rotating shaft 10 is inserted into the middle position of the two-way plate 9.

[0029] Specifically, the rotating shaft 10 is connected to a power motor that drives it to rotate. The power motor can drive the rotating shaft 10 to rotate in the forward or reverse direction, so that one side of the two-way plate 9 is close to the PCB board. The wiping head 11 and other components on the two-way plate 9 are close to the PCB board. Then, the components on the wiping head 11 cooperate with each other to remove and drive away the impurities in the area to be inspected on the PCB board, so that the area to be inspected on the PCB board is not obstructed.

[0030] More specifically, a drive motor 15 is installed on one side of the two-way plate 9. The output end of the drive motor 15 is connected to the wiping head 11. The bottom of the wiping head 11 is provided with an arc-shaped part. A storage cavity 1101 is provided inside the wiping head 11. The storage cavity 1101 is connected to the adsorption sponge 12 through the lower through hole 1102. The adsorption sponge 12 wraps around the outside of the wiping head 11. The top of the storage cavity 1101 is connected to the cavity in the wiping liquid inlet sleeve 13 through the upper through hole. The cavity in the wiping liquid inlet sleeve 13 is connected to the inlet pipe 1. The wiping head 11 is connected to the two-way plate 9 via the bearing seat 14. A feed valve 17 is installed at the feed pipe 16 to control the opening and closing of the channel between the feed pipe 16 and the wiping liquid feed sleeve 13. The feed pipe 16 is connected to the wiping liquid storage tank 18. A power pump for controlling the flow of wiping liquid can be installed in the wiping liquid storage tank 18. In this way, there is no need to set up the feed valve 17. The flow of wiping liquid can be controlled by the power pump. At the same time, the power pump and the feed valve 17 can also be set up at the same time, one as a power source and the other as a channel switch.

[0031] Sometimes, cleaning fluid is needed to remove oil from PCB boards. Fuchs RENOL IN ZAF series cleaning agents can be used. When foreign objects obstruct the area of ​​the PCB board to be inspected, the lateral position adjustment mechanism 6 can be used to move the area to be inspected to the position of the wiping head 11 in the two-way board 9. At this time, the rotating shaft 10 connected to the two-way board 9 is rotated, causing the wiping head 11 to rotate downwards and contact the PCB board. The drive motor 15 connected to the wiping head 11 can drive the wiping head 11 to rotate. Simultaneously, the cleaning fluid stored in the wiping fluid storage tank 18 enters the storage cavity 1101 through the feed pipe 16 and the upper through hole. Afterwards, the cleaning fluid in the storage cavity 1101... The wiping head 11 is immersed in the adsorption sponge 12 through the lower through hole 1102. The adsorption sponge 12 rotates together with the wiping head 11 to wipe the PCB board. The two work together to remove oily impurities and dust from the PCB board. The telescopic rod 8 can drive the wiping head 11 to move in a direction perpendicular to the horizontal position adjustment mechanism 6 to wipe away oily impurities and dust from various parts of the PCB board and push other impurities away from the area to be inspected on the PCB board. In this way, the obstruction of the area to be inspected on the PCB board is removed, so that the area to be inspected on the PCB board can be magnified and viewed by the camera 4, which is convenient for subsequent maintenance.

[0032] During the rotation of the wiping head 11, cleaning fluid can be filled into the adsorption sponge 12, and the PCB board can be wiped along with the adsorption sponge 12. This can clean the oily impurities in the area to be inspected on the PCB board. However, some cleaning fluid will remain in the area to be inspected. Therefore, it is sometimes necessary to remove the cleaning fluid to prevent the light refracted and reflected by the cleaning fluid from obstructing the view of the area to be inspected when the camera 4 takes pictures. Therefore, a drying element 19 is installed on the side of the two-way plate 9 away from the wiping head 11. The drying element 19 is wrapped with a wiping cloth 20. The drying element 19 is connected to a heating device 21 for heating. The rotating shaft 10 rotates in the opposite direction to bring the drying element 19 on the two-way plate 9 close to the PCB board and clean the residual cleaning fluid on the PCB board.

[0033] To prevent the PCB board from moving along with the wiping head 11 when wiping impurities on the PCB board, a lifting mechanism 22 is provided inside the inspection housing 1. The lifting mechanism 22 is connected to the lifting plate 23, and the telescopic rod 8 is installed on the lifting plate 23. Several pressure rods 24 are installed on the lower side of the lifting plate 23. When the pressure rods 24 move down, they can press the PCB board located on the upper side of the inspection base plate 5. It should be noted that after the pressure rods 24 press the PCB board, the lateral position adjustment mechanism 6 cannot be activated. Activating it will cause the PCB board to be unable to move, and in severe cases, the PCB board will be worn by the mutually moving inspection base plate 5 and pressure rods 24.

[0034] Working principle:

[0035] Before leaving the factory, PCB boards need to be inspected. After completing double-sided AOI inspection, the detailed inspection results are recorded in the system. The system is connected to computer 3. For PCB boards with inspection problems, repair is required. By logging the PCB board into computer 3 and connecting with the AOI inspection result system, the problem of the PCB board can be found. The PCB board is placed inside the repair housing 1, and the camera 4 is used to take pictures. Through the magnification function of the camera 4, the details of the PCB board that needs to be repaired are presented, which facilitates subsequent repair.

[0036] When a foreign object obstructs the area of ​​the PCB board to be inspected, the area can be moved to the position of the wiping head 11 in the two-way board 9 via the lateral position adjustment mechanism 6. At this time, the rotating shaft 10 connected to the two-way board 9 is rotated, causing the wiping head 11 to rotate downwards and contact the PCB board. The drive motor 15 connected to the wiping head 11 can drive the wiping head 11 to rotate. Simultaneously, the cleaning fluid stored in the wiping fluid storage tank 18 enters the storage cavity 1101 through the feed pipe 16 and the upper through hole. Afterwards, the cleaning fluid in the storage cavity 1101 flows through the lower through hole 1... The 102 is immersed in the absorbent sponge 12 with adsorption function, and the absorbent sponge 12 rotates together with the wiping head 11 to wipe the PCB board. The two work together to remove oily impurities and dust from the PCB board. The telescopic rod 8 can drive the wiping head 11 to move in a direction perpendicular to the horizontal position adjustment mechanism 6 to wipe away oily impurities and dust from all parts of the PCB board and push other impurities away from the area to be inspected on the PCB board. In this way, the obstruction of the area to be inspected on the PCB board is removed, so that the area to be inspected on the PCB board can be magnified and viewed by the camera 4, which is convenient for subsequent inspection.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intelligent inspection machine for inspecting the appearance of a PCB board, comprising an inspection housing (1), a workbench (2), characterized in that, The workbench (2) is provided with a computer (3), and the maintenance shell (1) is provided with a camera (4) facing the maintenance bottom plate (5); The workbench (2) is provided with a transverse position adjusting mechanism (6), which is used to drive the movement of the maintenance bottom plate (5); The maintenance shell (1) is provided with a telescopic rod (8), the output end of the telescopic rod (8) is connected with a mounting plate, the mounting plate is provided with a rotating shaft (10), and the rotating shaft (10) is inserted with a two-way plate (9); The rotating shaft (10) is connected with a power motor for driving rotation; The two-way plate (9) is provided with a driving motor (15) on one side, the output end of the driving motor (15) is connected with a wiping head (11), the wiping head (11) is provided with a storage cavity (1101) inside, the bottom of the storage cavity (1101) is provided with a lower through hole (1102), the top of the storage cavity (1101) is communicated with a cavity in the wiping liquid feeding sleeve (13) through an upper through hole, the cavity in the wiping liquid feeding sleeve (13) is communicated with a feeding pipeline (16), and the feeding pipeline (16) is communicated with a wiping liquid storage tank (18).

2. The intelligent inspection machine for inspecting the appearance of a PCB according to claim 1, wherein, The rotating shaft (10) is inserted into the middle position of the two-way plate (9).

3. The intelligent inspection machine for inspecting the appearance of a PCB according to claim 1, wherein, The feeding pipeline (16) is provided with a feeding valve (17) for opening and closing the channel between the feeding pipeline (16) and the wiping liquid feeding sleeve (13).

4. The intelligent inspection machine for inspecting the appearance of a PCB according to claim 1, wherein, The two-way plate (9) is provided with a drying piece (19) on the side away from the wiping head (11), the drying piece (19) is wrapped with a wiping cloth (20) on the outside, and the drying piece (19) is connected with a heating device (21) for heating.

5. The intelligent inspection machine for inspecting the appearance of a PCB according to claim 1, wherein, The maintenance shell (1) is provided with a lifting mechanism (22), the lifting mechanism (22) is connected with a lifting plate (23), the telescopic rod (8) is installed on the lifting plate (23), and the lifting plate (23) is provided with a plurality of pressing rods (24) on the lower side.

6. The intelligent inspection machine for inspecting the appearance of a PCB according to claim 1, wherein, The storage cavity (1101) is communicated with the adsorption sponge (12) through the lower through hole (1102), the adsorption sponge (12) is wrapped on the outside of the wiping head (11), and the wiping head (11) is connected with the two-way plate (9) through the bearing seat (14).

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