An optical inspection device for PCB board quality inspection

Abstract

The present invention discloses an optical inspection device for PCB board quality inspection, comprising a base, a first fixed plate provided on one side of the top surface of the base, a second fixed plate provided on one side of the top surface of the base, an inspection platform provided on the side where the first fixed plate and the second fixed plate are close to each other, a limit frame slidably connected to one side of the second fixed plate, a movable frame slidably connected to the inner walls of both sides of the limit frame, a load-bearing plate penetrating and extending to the top of the limit frame provided on the top of the movable frame, a moving rod provided on one side of the movable frame, and three telescopic springs equidistantly provided at the bottom of the moving rod. This optical inspection device for PCB board quality inspection can achieve the purpose of inspecting PCB boards by providing a low-speed motor, an infrared light emitter, a push plate, etc., and can eliminate damaged PCB boards by providing an infrared light emitter, an infrared light sensor, a movable plate, etc., thereby reducing the work of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection of PCB boards, and in particular to an optical detection device for quality inspection of PCB boards. Background Art

[0002] PCB, or printed circuit boards, is a provider of electrical connections for electronic components. It has a history of more than 100 years. Its design is mainly layout design. The main advantage of using circuit boards is that it greatly reduces wiring and assembly errors, improves the level of automation and production labor rate. According to the number of layers of the circuit board, it can be divided into single-sided board, double-sided board, four-layer board, six-layer board and other multi-layer boards.

[0003] The existing technology has the following defects or problems:

[0004] 1. When testing existing PCB boards, most of the time, the circuits on the PCB boards are tested. It is inconvenient to test cracks on some PCB boards themselves, which will shorten the service life of the PCB boards.

[0005] 2. When inspecting existing PCBs, an alarm is generally used to alert damaged PCBs. However, manual intervention is still required to remove the damaged PCBs, which increases the workload of the staff. Summary of the Invention

[0006] The purpose of the present invention is to provide an optical inspection device for PCB board quality inspection in order to address the deficiencies of the prior art and solve the problems raised in the background art.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an optical inspection device for PCB board quality inspection, comprising a base, a first fixed plate is provided on one side of the top surface of the base, a second fixed plate is provided on one side of the top surface of the base, a detection platform is provided on the side where the first fixed plate and the second fixed plate are close to each other, one side of the second fixed plate is slidably connected to a limit frame, both sides of the inner wall of the limit frame are slidably connected to a movable frame, the top of the movable frame is provided with a load-bearing plate that passes through and extends to the top of the limit frame, a moving rod is provided on one side of the movable frame, and the bottom of the moving rod is equidistantly provided with Three telescopic springs are provided, a pushing plate is provided at the other end of the telescopic spring, an infrared light sensor is provided on one side of the top surface of the detection platform, a movable plate is hinged on one side of the detection platform, and a sliding block is slidably connected to the bottom surface of the movable plate. A mounting plate is provided on one side of the first fixed plate, and an infrared light emitter is installed on the bottom surface of the mounting plate. A support plate is provided on one side of the second fixed plate, and a low-speed motor is installed on the top surface of the support plate by bolts. The output end of the low-speed motor passes through and extends to the rotating shaft on the other side of the second fixed plate, and a gear is provided at the other end of the rotating shaft.

[0008] As a preferred technical solution of the present invention, the inner ring of the movable frame is provided with a gear ring, and the gear is adapted to the gear ring.

[0009] As a preferred technical solution of the present invention, an annular groove is opened on the top of one side of the second fixed plate, and a roller is rotatably connected to one side of the load-bearing plate, and the roller rolls in the annular groove opened on the top of one side of the second fixed plate.

[0010] As a preferred technical solution of the present invention, a slide groove is provided on the top and bottom of one side of the second fixed plate, and a slider is placed in the slide groove, and the outer wall of the slider is welded to one side of the limit frame, and the vertical section of the slide groove is T-shaped.

[0011] As a preferred technical solution of the present invention, both inner walls of the limit frame are provided with slide grooves, and sliders are placed in the slide grooves, and the outer walls of the sliders are welded to the side walls of the movable frame, and the cross section of the slide groove is T-shaped.

[0012] As a preferred technical solution of the present invention, a push rod motor is provided on one side of the top surface of the base, and the output end of the push rod motor is hinged to one side of the sliding block.

[0013] As a preferred technical solution of the present invention, a slide groove is provided on the bottom surface of the movable plate, and a slider is placed in the slide groove, and the outer wall of the slider is welded to one side of the sliding block, and the vertical section of the slide groove is T-shaped.

[0014] As a preferred technical solution of the present invention, conveyor belts are provided on both sides of the top surface of the base, grooves are provided on the bottom of both sides of the testing platform, and the grooves provided on the bottom of both sides of the testing platform are adapted to one side surface of the conveyor belt.

[0015] As a preferred technical solution of the present invention, guide grooves are provided on both sides of the top surface of the detection platform, grooves are provided on both sides of the bottom of the push plate, and guide wheels are provided in the grooves. The guide wheels are located in the guide grooves provided on both sides of the top surface of the detection platform and roll.

[0016] As a preferred technical solution of the present invention, the infrared light emitter is located directly above the infrared light sensor, the signal output end of the infrared light sensor is connected to the signal input end of the PLC controller, and the output end of the PLC controller is connected to the control end of the low-speed motor and the control end of the push rod motor.

[0017] Compared with the prior art, the present invention provides an optical inspection device for PCB board quality inspection, which has the following beneficial effects:

[0018] 1. This optical inspection device for PCB board quality inspection is provided with a low-speed motor, an infrared light emitter, and a push plate. When the low-speed motor is started, its output end can drive the rotating shaft to rotate, which in turn can drive the gear to rotate, and then can drive the limit frame to move through the movable frame. When the gear moves to one side of the gear ring provided on the movable frame, the movable frame will move downward, which can drive the moving rod to move. When the moving rod moves, it can drive the push plate to move through the telescopic spring. At this time, the push plate can push the PCB board to be inspected on the conveyor belt to the top surface of the inspection table. When the PCB board moves, the infrared light emitter will illuminate the PCB board, thereby achieving the purpose of inspecting the PCB board;

[0019] 2. This optical inspection device for PCB board quality inspection is equipped with an infrared light emitter, an infrared light sensor and a movable plate. When there is a crack in the PCB board, the light from the infrared light emitter will pass through the gap and be sensed by the infrared light sensor. At this time, the infrared light sensor will transmit a signal to the PLC controller, so that the PLC controller will start the push rod motor. The output end of the push rod motor will drive the sliding block to move, so that the movable plate can be opened. As the push plate is pushed, the damaged PCB board can be leaked from the through hole opened by the movable plate, thereby realizing the removal of the damaged PCB board and reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2It is a schematic diagram of the movable frame structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the limit frame structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the push plate structure of the present invention;

[0024] Figure 5 This is a schematic structural diagram of the infrared emitter of the present invention;

[0025] Figure 6 This is a schematic diagram of the bottom structure of the detection platform of the present invention;

[0026] Figure 7 It is a schematic diagram of the back structure of the present invention.

[0027] Figure numerals: 1. base; 2. conveyor belt; 3. first fixed plate; 4. second fixed plate; 5. detection table; 6. movable plate; 7. push rod motor; 8. moving rod; 9. load-bearing plate; 10. movable frame; 11. limit frame; 12. infrared light sensor; 13. telescopic spring; 14. guide wheel; 15. rotating shaft; 16. support plate; 17. low-speed motor; 18. roller; 19. gear; 20. push plate; 21. mounting plate; 22. infrared light emitter; 23. sliding block. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7, including a base 1, a first fixed plate 3 is provided on one side of the top surface of the base 1, a second fixed plate 4 is provided on one side of the top surface of the base 1, a detection platform 5 is provided on the side where the first fixed plate 3 and the second fixed plate 4 are close to each other, one side of the second fixed plate 4 is slidably connected to the limit frame 11, and the inner walls on both sides of the limit frame 11 are slidably connected to the movable frame 10, and the top of the movable frame 10 is provided with a load-bearing plate 9 that passes through and extends to the top of the limit frame 11, a moving rod 8 is provided on one side of the movable frame 10, and three telescopic springs 13 are equidistantly provided at the bottom of the moving rod 8, and a pushing plate 20 is provided at the other end of the telescopic spring 13, an infrared light sensor 12 is provided on one side of the top surface of the detection platform 5, a movable plate 6 is hinged on one side of the detection platform 5, and the bottom surface of the movable plate 6 is slidably connected to a sliding block 23, a mounting plate 21 is provided on one side of the first fixed plate 3, and an infrared light emitter 22 is installed on the bottom surface of the mounting plate 21, and the second fixed plate 4 A support plate 16 is provided on one side, and a low-speed motor 17 is installed on the top surface of the support plate 16 by bolts. The output end of the low-speed motor 17 passes through and extends to the rotating shaft 15 on the other side of the second fixed plate 4. The other end of the rotating shaft 15 is provided with a gear 19. When the low-speed motor 17 is started, its output end can drive the rotating shaft 15 to rotate, and then drive the gear 19 to rotate, and then drive the limit frame 11 to move through the movable frame 10. When the gear 19 moves to one side of the gear ring provided on the movable frame 10, the movable frame 10 will move downward, and then drive the moving rod 8 to move. When the moving rod 8 moves, it can drive the pushing plate 20 to move through the telescopic spring 13. At this time, the pushing plate 20 can push the PCB board to be inspected on the conveyor belt 2 to the top surface of the inspection table 5. When the PCB board moves, the infrared light emitter 22 will irradiate the PCB board, thereby achieving the purpose of inspecting the PCB board.

[0031] Example 2:

[0032] See also Figure 2 、 Figure 3 and Figure 6The inner ring of the movable frame 10 is provided with a gear ring, and the gear 19 is adapted to the gear ring. An annular groove is provided on the top of one side of the second fixed plate 4, and one side of the load-bearing plate 9 is rotatably connected to a roller 18, and the roller 18 rolls in the annular groove opened on the top of one side of the second fixed plate 4. A slide groove is provided on the top and bottom of one side of the second fixed plate 4, and a slider is placed in the slide groove, and the outer wall of the slider is welded to one side of the limit frame 11, and the vertical section of the slide groove is T-shaped. The inner walls on both sides of the limit frame 11 are provided with slide grooves, and a slider is placed in the slide groove, and the outer wall of the slider is welded to the side walls of the movable frame 10, and the cross-section of the slide groove is T-shaped. A push rod motor 7 is provided on one side of the top surface of the base 1, and the output end of the push rod motor 7 is hinged to one side of the sliding block 23. A slide groove is provided on the bottom surface of the movable plate 6, and a slider is placed in the slide groove, and the outer wall of the slider is welded to one side of the sliding block 23, and the vertical section of the slide groove is T-shaped.

[0033] Example 3:

[0034] See also Figure 2 、 Figure 4 , conveyor belts 2 are provided on both sides of the top surface of the base 1, grooves are provided on the bottom of both sides of the detection platform 5, and the grooves provided on the bottom of both sides of the detection platform 5 are adapted to one side surface of the conveyor belt 2, guide grooves are provided on both sides of the top surface of the detection platform 5, grooves are provided on both sides of the bottom of the push plate 20, and guide wheels 14 are provided in the grooves, and the guide wheels 14 are located in the guide grooves provided on both sides of the top surface of the detection platform 5 and roll, the infrared light emitter 22 is located directly above the infrared light sensor 12, the signal output end of the infrared light sensor 12 is connected to the signal input end of the PLC controller, and the output end of the PLC controller is connected to the low-speed motor The control end of the machine 17 is connected to the control end of the push rod motor 7. When there is a crack in the PCB board, the light of the infrared light emitter 22 will pass through the gap and can be sensed by the infrared light sensor 12. At this time, the infrared light sensor 12 will transmit a signal to the PLC controller, so that the PLC controller will start the push rod motor 7. The output end of the push rod motor 7 will drive the sliding block 23 to move, so that the movable plate 6 can be opened, and as the push plate 20 pushes, the damaged PCB board can be leaked from the through hole opened by the movable plate 6, thereby realizing the removal of the damaged PCB board and reducing the work of the staff.

[0035] The working principle and usage process of the present invention are as follows: first, the PCB board to be inspected can be placed on the conveyor belt 2 set on the right side of the base 1, and the conveyor belt 2 can be started. The conveyor belt 2 will rotate and can convey the PCB board to be inspected to the surface of the inspection table 5. At this time, the infrared light sensor 12 and the infrared light emitter 22 can be turned on, and the low-speed motor 17 can be started at the same time. The output end of the low-speed motor 17 can drive the rotating shaft 15 to rotate, and the rotation of the rotating shaft 15 can drive the gear 19 to rotate. The rotation of the gear 19 can drive the limit frame 11 to move through the movable frame 10. When the gear 19 moves to one side of the gear ring set on the movable frame 10, the movable frame 10 will move downward, and can drive the moving rod 8 to move. When the moving rod 8 moves, it can drive the push plate 20 to move through the telescopic spring 13. At this time, the push plate 20 can move the PCB board to be inspected on the conveyor belt 2. When the PCB board is pushed to the top surface of the inspection table 5, the infrared light emitter 22 will illuminate the PCB board when the PCB board moves. If there is a crack in the PCB board, the light of the infrared light emitter 22 will pass through the gap and be sensed by the infrared light sensor 12. At this time, the infrared light sensor 12 will transmit a signal to the PLC controller, so that the PLC controller will start the push rod motor 7. The output end of the push rod motor 7 will drive the sliding block 23 to move, so that the movable plate 6 can be opened, and as the push plate 20 is pushed, the damaged PCB board can be leaked from the through hole opened by the movable plate 6, thereby realizing the removal of the damaged PCB board and reducing the work of the staff. When it is detected that there is no problem with the PCB board, the PCB board will be pushed by the push plate 20 to the conveyor belt 2 on the other side and collected.

[0036] 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 optical inspection device for PCB board quality inspection, comprising a base (1), characterized in that: A first fixed plate (3) is provided on one side of the top surface of the base (1), a second fixed plate (4) is provided on one side of the top surface of the base (1), a detection platform (5) is provided on the side where the first fixed plate (3) and the second fixed plate (4) are close to each other, one side of the second fixed plate (4) is slidably connected to a limit frame (11), and the inner walls on both sides of the limit frame (11) are slidably connected to a movable frame (10), and a load-bearing plate (9) that passes through and extends to the top of the limit frame (11) is provided on the top of the movable frame (10), and a moving rod (8) is provided on one side of the movable frame (10), and three telescopic springs (13) are equidistantly provided at the bottom of the moving rod (8), and a pushing plate (20) is provided on the other end of the telescopic spring (13), and a red An external light sensor (12), a movable plate (6) is hinged on one side of the detection platform (5), and a sliding block (23) is slidably connected to the bottom surface of the movable plate (6), a mounting plate (21) is provided on one side of the first fixed plate (3), and an infrared light emitter (22) is installed on the bottom surface of the mounting plate (21), a support plate (16) is provided on one side of the second fixed plate (4), and a low-speed motor (17) is installed on the top surface of the support plate (16) by bolts, and the output end of the low-speed motor (17) passes through and extends to the rotating shaft (15) on the other side of the second fixed plate (4), and a gear (19) is provided on the other end of the rotating shaft (15); a slide groove is provided on the top and bottom of one side of the second fixed plate (4), and a slider is placed in the slide groove, and the outer wall of the slider is welded to one side of the limit frame (11), and the vertical section of the slide groove is T-shaped.

2. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: The inner ring of the movable frame (10) is provided with a gear ring, and the gear (19) is adapted to the gear ring.

3. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: An annular groove is provided on the top of one side of the second fixed plate (4), and a roller (18) is rotatably connected to one side of the load-bearing plate (9), and the roller (18) rolls in the annular groove provided on the top of one side of the second fixed plate (4).

4. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: Both inner walls of the limit frame (11) are provided with sliding grooves, and sliders are placed in the sliding grooves. The outer walls of the sliders are welded to the side walls of the movable frame (10), and the cross section of the sliding groove is T-shaped.

5. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: A push rod motor (7) is provided on one side of the top surface of the base (1), and an output end of the push rod motor (7) is hinged to one side of a sliding block (23).

6. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: A slide groove is provided on the bottom surface of the movable plate (6), and a slider is placed in the slide groove. The outer wall of the slider is welded to one side of the sliding block (23), and the vertical section of the slide groove is T-shaped.

7. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: Conveyor belts (2) are provided on both sides of the top surface of the base (1), and grooves are provided on both sides of the bottom of the detection platform (5), and the grooves provided on both sides of the bottom of the detection platform (5) are adapted to one side surface of the conveyor belt (2).

8. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: Guide grooves are provided on both sides of the top surface of the detection platform (5), grooves are provided on both sides of the bottom of the push plate (20), and guide wheels (14) are provided in the grooves. The guide wheels (14) are located in the guide grooves provided on both sides of the top surface of the detection platform (5) and roll.

9. The optical inspection device for PCB board quality inspection according to claim 1, characterized in that: The infrared light emitter (22) is located directly above the infrared light sensor (12), the signal output end of the infrared light sensor (12) is connected to the signal input end of the PLC controller, and the output end of the PLC controller is connected to the control end of the low-speed motor (17) and the control end of the push rod motor (7).

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