LED explosion-proof lamp circuit board detection device

Abstract

The LED explosion-proof lamp circuit board detection device comprises a base, a circuit board conveying mechanism comprises a first support and a second support which are fixed to the base, and a first conveying belt and a second conveying belt which are opposite in conveying direction are installed on the first support and the second support respectively; a plurality of mounting blocks are fixed to the third conveying belt, a moving plate is mounted on the mounting blocks, and a camera is mounted at the bottom of the moving plate. According to the invention, the camera can directly face and synchronously move along with the circuit board on the first conveying belt and the second conveying belt, and the camera and the circuit board are relatively static at the moment, so that the circuit board can be photographed and clearer pictures can be captured, and the defects of time fragmentation and time fragmentation in the prior art are avoided; and meanwhile, the image capturing and processing pressure is reduced, and the circuit board detection efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board detection, and in particular to a circuit board detection device for an LED explosion-proof lamp. Background Art

[0002] LED explosion-proof lamps are the same as explosion-proof lamps. The difference is that the light source is LED. In order to prevent the ignition of surrounding explosive mixtures such as explosive gas environment, explosive dust environment, gas, etc., various specific measures are taken.

[0003] In the field of circuit board welding quality inspection, automated inspection technology has become an important means to improve production efficiency and product quality due to its high precision and high efficiency. The core of this technology is to combine advanced image processing and algorithm technology to capture images of the circuit board welding area through a camera, and then conduct in-depth analysis of these images to determine whether the welding quality meets the standards. However, in large-scale industrial inspection scenarios, existing automated inspection technologies still face bottlenecks in improving efficiency, which are mainly reflected in the following aspects:

[0004] Efficiency limitations of intermittent conveying:

[0005] Start-stop time loss: In intermittent conveying mode, the circuit board needs to stop at a fixed position before the camera takes a picture, and then restart the conveying after the picture is taken. In this process, the repeated start and stop of the conveyor line not only increases mechanical wear, but more importantly, the start and stop time itself becomes the main obstacle to improving inspection efficiency.

[0006] Time fragmentation: Since each circuit board requires separate start and stop time, the time of the entire inspection process is fragmented, making it difficult to form a continuous and efficient workflow.

[0007] In addition, image capture and processing pressure: In order to overcome the efficiency problem of intermittent conveying, continuous conveying can be used in theory, but this requires the camera to have fast continuous shooting capabilities and to accurately capture clear images during the high-speed movement of the circuit board. At the same time, the generation of a large number of continuous images greatly increases the workload of the image processing system, which may lead to a decrease in processing speed and even affect the accuracy and stability of image analysis.

[0008] To this end, the present application proposes a circuit board detection device for an LED explosion-proof lamp. Summary of the invention

[0009] The purpose of the present invention is to solve the above technical problems and to propose a circuit board detection device for an LED explosion-proof lamp.

[0010] In order to achieve the above object, the present invention adopts the following technical solutions:

[0011] An LED explosion-proof lamp circuit board detection device comprises a base, four support columns are fixedly connected to the base, and a mounting plate is fixedly connected to the upper ends of the four support columns;

[0012] Circuit board conveying mechanism; the circuit board conveying mechanism comprises a first bracket and a second bracket fixed on the base, and the first bracket and the second bracket are respectively equipped with a first conveying belt and a second conveying belt with opposite conveying directions;

[0013] A third conveyor belt capable of moving synchronously with the first conveyor belt and the second conveyor belt, wherein a plurality of mounting blocks are fixed on the third conveyor belt, a movable plate is mounted on the mounting blocks, a camera is mounted on the bottom of the movable plate, and two electrode columns capable of moving and detecting the power supply of the circuit board are mounted on the movable plate.

[0014] Preferably, two first shafts are rotatably connected to the first bracket, first transmission rollers are mounted on the two first shafts, the two first transmission rollers are connected via a first conveyor belt, and a plurality of first limit members are fixed on the first conveyor belt.

[0015] Preferably, the first limiting member includes two first U-shaped rubber strips fixed on the first conveyor belt, and the two first U-shaped rubber strips are arranged opposite to each other.

[0016] Preferably, two second shafts are rotatably connected to the first bracket, second transmission rollers are mounted on the two second shafts, the two second transmission rollers are connected via a second conveyor belt, and a plurality of second limit members are fixed on the second conveyor belt.

[0017] Preferably, the second limiting member includes two second U-shaped rubber strips fixed on the second conveyor belt, and the two second U-shaped rubber strips are arranged opposite to each other.

[0018] Preferably, the bottom of the mounting plate is rotatably connected to four third shafts, third transmission rollers are fixed to the four third shafts, and the third conveyor belt is arranged around the outside of the four third transmission rollers.

[0019] Preferably, it also includes a driving mechanism for driving the first conveyor belt, the second conveyor belt, and the third conveyor belt to rotate, the driving mechanism includes a motor installed on the upper end of the mounting plate, the output end of the motor is connected to one of the third shaft rods, a short rod is fixed on one of the third shaft rods, a first bevel gear is fixed on the short rod, two support blocks are fixed on the mounting plate, a transmission rod for rotation is passed through the two support blocks, a second bevel gear is installed on the two transmission rods, the two second bevel gears are meshed with the first bevel gear, and the transmission rod is connected to the first shaft rod and the second shaft rod through a transmission mechanism.

[0020] Preferably, the transmission mechanism includes a change box fixed on the first bracket and the second bracket and connected to the first shaft rod and the second shaft rod, a drive rod is fixed to the shaft end of the change box, and transmission wheels are fixed on the transmission rod and the drive rod, and the two transmission wheels are connected by a transmission belt.

[0021] Preferably, it also includes a limiting mechanism for driving the two electrode columns to move, the limiting mechanism includes a limiting plate fixed to the bottom of the mounting plate, both ends of the limiting plate are inclined surfaces, and a plurality of slots are penetrated on the limiting plate, and a protrusion is formed on the limiting plate between two adjacent slots, and two sliding moving rods are penetrated from top to bottom of the moving plate, the electrode column is installed at the bottom of the moving rod, a fixing ring is fixedly connected to the moving rod, a reset spring is fixedly connected to the fixing ring, the upper end of the reset spring is fixedly connected to the bottom of the moving plate, and the reset spring is sleeved on the outside of the moving rod, and the upper end of the moving rod is provided with an annular arc surface.

[0022] Preferably, a power supply is installed on the movable plate, and the power supply is electrically connected to the camera and the two electrode columns.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Through the cooperation of the motor, the driving mechanism and the transmission mechanism, the first conveyor belt, the second conveyor belt and the third conveyor belt can be moved synchronously so as to collect images of the circuit board for detection.

[0025] 2. By setting up the third conveyor belt with a rectangular distribution, it can cooperate with the first conveyor belt and the second conveyor belt for conveying in two directions, that is to say, it can meet the detection work on two assembly lines, thus greatly improving the work efficiency.

[0026] 3. The camera and the circuit board can be kept relatively still during the transportation process, so that the circuit board can be photographed and clearer pictures can be captured, avoiding the time fragmentation and time fragmentation disadvantages of the existing technology, while reducing the pressure of image capture and processing, and improving the efficiency of circuit board detection.

[0027] 4. Under the guidance of the inclined plane, the moving rod moves downward, and the moving rod drives the electrode column to move downward. At this time, the reset spring is compressed, and the electrode column moves downward through the plug-in hole on the circuit board. At this time, the circuit board is powered on, and the power-on detection of the circuit board can be carried out.

[0028] 5. The intermittent contact between the moving rod and the protrusion will cause the moving rod to vibrate up and down, thereby driving the circuit board to vibrate, simulating the shaking of the circuit board during use after it is installed on the explosion-proof lamp. This makes the detection of the circuit board more practical and accurate.

[0029] To sum up, the present invention enables the camera to follow the circuit boards on the first conveyor belt and the second conveyor belt and move synchronously. At this time, the camera and the circuit boards are relatively still, so that the circuit boards can be photographed and clearer pictures can be captured, avoiding the time fragmentation and the disadvantages of the prior art. At the same time, it reduces the pressure of image capture and processing, and improves the efficiency of circuit board detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of a circuit board detection device for an LED explosion-proof lamp proposed by the present invention;

[0031] Figure 2 This is a structural schematic diagram of the third conveyor belt in a circuit board detection device for an LED explosion-proof lamp proposed by the present invention;

[0032] Figure 3 This is a structural schematic diagram of a moving rod and a camera in a circuit board detection device for an LED explosion-proof lamp proposed by the present invention;

[0033] Figure 4 This is a structural schematic diagram of a first conveyor belt and a second conveyor belt in a circuit board detection device for an LED explosion-proof lamp proposed by the present invention;

[0034] Figure 5 This is a structural schematic diagram of a limit plate in a circuit board detection device for an LED explosion-proof lamp proposed by the present invention;

[0035] Figure 6 This is a structural schematic diagram of the first bevel gear and the second bevel gear in the LED explosion-proof lamp circuit board detection device proposed by the present invention.

[0036] In the figure: 1 base, 2 support column, 3 mounting plate, 4 motor, 5 third conveyor belt, 6 first bracket, 7 first transmission roller, 8 first conveyor belt, 9 second bracket, 10 second transmission roller, 11 second conveyor belt, 12 first U-shaped rubber strip, 13 second U-shaped rubber strip, 14 moving plate, 15 short rod, 16 transmission rod, 17 support block, 18 drive rod, 19 limit plate, 20 slot, 21 protrusion, 22 inclined surface, 23 moving rod, 24 electrode column, 25 power supply, 26 camera, 27 fixing ring, 28 reset spring, 29 annular arc surface, 30 third transmission roller, 31 third shaft rod, 32 first shaft rod, 33 second shaft rod, 34 first bevel gear, 35 second bevel gear, 36 transmission wheel, 37 transmission belt, 38 mounting block, 39 change-direction box. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-Figure 6 , a LED explosion-proof lamp circuit board detection device, comprising a base 1, four support columns 2 are fixedly connected to the base 1, and a mounting plate 3 is fixedly connected to the upper ends of the four support columns 2;

[0039] Circuit board conveying mechanism; the circuit board conveying mechanism includes a first bracket 6 and a second bracket 9 fixed on a base 1, and a first conveyor belt 8 and a second conveyor belt 11 with opposite conveying directions are respectively installed on the first bracket 6 and the second bracket 9; two first shafts 32 are rotatably connected to the first bracket 6, and first transmission rollers 7 are installed on the two first shafts 32, and the two first transmission rollers 7 are connected by a first conveyor belt 8, and a plurality of first limit members are fixed on the first conveyor belt 8; the first limit members include two first U-shaped rubber strips 12 fixed on the first conveyor belt 8, and the two first U-shaped rubber strips 12 are arranged opposite to each other.

[0040] Explanation of the second conveyor belt 11: two second shafts 33 are rotatably connected to the first bracket 6, second transmission rollers 10 are installed on the two second shafts 33, the two second transmission rollers 10 are connected through the second conveyor belt 11, and a plurality of second limit members are fixed on the second conveyor belt 11. The second limit members include two second U-shaped rubber strips 13 fixed on the second conveyor belt 11, and the two second U-shaped rubber strips 13 are arranged opposite to each other.

[0041] The third conveyor belt 5 can move synchronously with the first conveyor belt 8 and the second conveyor belt 11. The bottom of the mounting plate 3 is rotatably connected to four third shaft rods 31, and third transmission rollers 30 are fixed on the four third shaft rods 31. The third conveyor belt 5 is arranged around the outside of the four third transmission rollers 30.

[0042] Among them, it also includes a driving mechanism for driving the first conveyor belt 8, the second conveyor belt 11, and the third conveyor belt 5 to rotate. The driving mechanism includes a motor 4 installed at the upper end of the mounting plate 3. The output end of the motor 4 is connected to one of the third shaft rods 31. A short rod 15 is fixed to one of the third shaft rods 31, and a first bevel gear 34 is fixed to the short rod 15. Two support blocks 17 are fixed to the mounting plate 3. A transmission rod 16 that is rotatably arranged is penetrated through the two support blocks 17. Second bevel gears 35 are installed on the two transmission rods 16. The two second bevel gears 35 are meshed with the first bevel gear 34. The transmission rod 16 passes through the transmission rod 16. The transmission mechanism is connected to the first shaft rod 32 and the second shaft rod 33. The transmission mechanism includes a change box 39 fixed to the first bracket 6 and the second bracket 9 and connected to the first shaft rod 32 and the second shaft rod 33. The shaft end of the change box 39 is fixed with a driving rod 18. The transmission rod 16 and the driving rod 18 are both fixed with a transmission wheel 36. The two transmission wheels 36 are connected by a transmission belt 37. The change box 39 is provided with meshing transmission gears, and a connecting rod is fixed on the transmission gear. The connecting rod is the shaft end of the change box 39, one end of which is fixedly connected to the first shaft rod 32 and the second shaft rod 33, and the other end is fixedly connected to the driving rod 18.

[0043] A plurality of mounting blocks 38 are fixed on the third conveyor belt 5, a movable plate 14 is mounted on the mounting blocks 38, and a camera 26 is mounted on the bottom of the movable plate 14, wherein the camera 26 and the electrode column 24 are always arranged relative to the first limit member and the second limit member, and the first bevel gear 34, the second bevel gear 35, etc. can be arranged to ensure that the camera 26 and the electrode column 24 are always arranged relative to the first limit member and the second limit member during the movement.

[0044] The movable plate 14 is provided with two electrode columns 24 that can move and detect the circuit board being energized, and also includes a limiting mechanism for driving the two electrode columns 24 to move. The limiting mechanism includes a limiting plate 19 fixed to the bottom of the mounting plate 3, both ends of the limiting plate 19 are inclined surfaces 22, and a plurality of card slots 20 are penetrated through the limiting plate 19, and a protrusion 21 is formed on the limiting plate 19 between two adjacent card slots 20. The movable plate 14 is penetrated with two sliding movable rods 23 from top to bottom, and the electrode column 24 is installed at the bottom of the movable rod 23. A fixing ring 27 is fixedly connected to the movable rod 23, and a reset spring 28 is fixedly connected to the fixing ring 27. The upper end of the reset spring 28 is fixedly connected to the bottom of the movable plate 14, and the reset spring 28 is set on the outside of the movable rod 23. The upper end of the movable rod 23 is provided with an annular arc surface 29. A power supply 25 is installed on the movable plate 14, and the power supply 25 is electrically connected to the camera 26 and the two electrode columns 24.

[0045] When the present invention is used, the circuit board is placed in the first limiter and the second limiter and the motor 4 is started. The motor 4 drives the third shaft 31 to rotate. The rotation of the third shaft 31 drives the third transmission roller 30 to rotate. Under the transmission of the third conveyor belt 5, the four third transmission rollers 30 rotate. The rotation of the third conveyor belt 5 drives the installation block 38, the movable plate 14, etc. to move.

[0046] The rotation of the third transmission roller 30 drives the short rod 15 to rotate, and the rotation of the short rod 15 drives the first bevel gear 34 to rotate, and the rotation of the first bevel gear 34 drives the two second bevel gears 35 to rotate, and the two second bevel gears 35 rotate in opposite directions, so that the two transmission rods 16 rotate in opposite directions. Under the transmission of the transmission wheel 36 and the transmission belt 37, the driving rod 18 rotates, and then the first shaft rod 32 and the second shaft rod 33 rotate, and the first shaft rod 32 and the second shaft rod 33 rotate in opposite directions. The rotation of the first shaft rod 32 moves the first conveyor belt 8, and the rotation of the second shaft rod 33 moves the second conveyor belt 11. The first conveyor belt 8 and the second conveyor belt 11 convey the circuit board in opposite directions;

[0047] Since the third conveyor belt 5 is distributed in a rectangular shape, the camera 26 can follow the circuit boards on the first conveyor belt 8 and the second conveyor belt 11 and move in a synchronous manner. At this time, the camera 26 and the circuit boards are relatively stationary, so that the circuit boards can be photographed and clearer pictures can be captured. Combined with advanced image processing and algorithm technology, the camera 26 captures images of the welding area of ​​the circuit board, and then these images are deeply analyzed to determine whether the welding quality meets the standards;

[0048] By arranging the third conveyor belt 5 with a rectangular distribution, it is possible to cooperate with the first conveyor belt 8 and the second conveyor belt 11 for conveying in two directions, that is to say, it is possible to meet the detection work on two assembly lines, thus greatly improving the work efficiency.

[0049] As mentioned above, the time fragmentation and disadvantages of the prior art are avoided, while the pressure of image capture and processing is reduced, and the efficiency of circuit board detection is improved.

[0050] As the third conveyor belt 5 moves, the moving plate 14 and the moving rod 23 are driven to move, and then the annular arc surface 29 abuts against the inclined surface 22, and the moving rod 23 moves downward under the guidance of the inclined surface 22, and the moving rod 23 moves downward to drive the electrode column 24 to move downward. At this time, the reset spring 28 is compressed, and the electrode column 24 moves downward through the plug-in hole on the circuit board. At this time, the circuit board is powered on. If the indicator light on the circuit board is lit, it means that the welding quality of the circuit board and the welding of the electrical components are correct. If it is not lit, it means that the production of the circuit board is unqualified;

[0051] As the moving rod 23 moves on the limit plate 19, the moving rod 23 intermittently abuts against the protrusion 21. Since the circuit board is limited by the first limit member and the second limit member and is not easy to deviate, the moving rod 23 intermittently abuts against the protrusion 21, which will cause the moving rod 23 to shake up and down, thereby driving the circuit board to shake. At this time, the circuit board is energized and shakes. If the indicator light on the circuit board flashes during the shaking process, it means that there is a cold solder joint or the welding is unstable, indicating that the circuit board is unqualified. Otherwise, it is qualified. This part simulates the shaking of the circuit board during use after it is installed on the explosion-proof lamp, so the detection of the circuit board is more practical and accurate.

[0052] As the moving rod 23 moves, the moving rod 23 is separated from the limiting plate 19, and under the action of the reset spring 28, the moving rod 23 is reset, and the electrode column 24 is separated from the circuit board at this time;

[0053] In this way, the circuit board can be tested by collecting images. At the same time, it can be tested when it is powered on and during vibration after power-on, making the test more comprehensive.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A LED explosion-proof lamp circuit board detection device, comprising a base (1), characterized in that: Four support columns (2) are fixedly connected to the base (1), and the upper ends of the four support columns (2) are fixedly connected to a mounting plate (3); A circuit board conveying mechanism; the circuit board conveying mechanism comprises a first bracket (6) and a second bracket (9) fixed on a base (1); a first conveying belt (8) and a second conveying belt (11) with opposite conveying directions are respectively mounted on the first bracket (6) and the second bracket (9); A third conveyor belt (5) is capable of moving synchronously with a first conveyor belt (8) and a second conveyor belt (11), wherein a plurality of mounting blocks (38) are fixed on the third conveyor belt (5), a movable plate (14) is mounted on the mounting blocks (38), a camera (26) is mounted at the bottom of the movable plate (14), and two electrode columns (24) are mounted on the movable plate (14) that can move and detect the power supply of a circuit board.

2. The LED explosion-proof lamp circuit board detection device according to claim 1, characterized in that: The first bracket (6) is rotatably connected to two first shafts (32), and the two first shafts (32) are both equipped with first transmission rollers (7). The two first transmission rollers (7) are connected via a first conveyor belt (8), and a plurality of first limit members are fixed to the first conveyor belt (8).

3. The LED explosion-proof lamp circuit board detection device according to claim 2 is characterized in that: The first limiting member comprises two first U-shaped rubber strips (12) fixed on the first conveyor belt (8), and the two first U-shaped rubber strips (12) are arranged opposite to each other.

4. The LED explosion-proof lamp circuit board detection device according to claim 3, characterized in that: Two second shafts (33) are rotatably connected to the first bracket (6), and second transmission rollers (10) are installed on the two second shafts (33). The two second transmission rollers (10) are connected by a second conveyor belt (11), and a plurality of second limit members are fixed on the second conveyor belt (11).

5. The LED explosion-proof lamp circuit board detection device according to claim 4, characterized in that: The second limiting member comprises two second U-shaped rubber strips (13) fixed on the second conveyor belt (11), and the two second U-shaped rubber strips (13) are arranged opposite to each other.

6. The LED explosion-proof lamp circuit board detection device according to claim 5, characterized in that: The bottom of the mounting plate (3) is rotatably connected to four third shafts (31), and third transmission rollers (30) are fixed on the four third shafts (31). The third conveyor belt (5) is arranged around the outside of the four third transmission rollers (30).

7. The LED explosion-proof lamp circuit board detection device according to claim 6, characterized in that: The invention also comprises a driving mechanism for driving the first conveyor belt (8), the second conveyor belt (11) and the third conveyor belt (5) to rotate, wherein the driving mechanism comprises a motor (4) mounted on the upper end of the mounting plate (3), the output end of the motor (4) being connected to one of the third shaft rods (31), a short rod (15) being fixed to one of the third shaft rods (31), a first bevel gear (34) being fixed to the short rod (15), two support blocks (17) being fixed to the mounting plate (3), a transmission rod (16) being rotatably arranged penetrating the two support blocks (17), a second bevel gear (35) being mounted on the two transmission rods (16), the two second bevel gears (35) being meshed with the first bevel gear (34), and the transmission rod (16) being connected to the first shaft rod (32) and the second shaft rod (33) through a transmission mechanism.

8. The LED explosion-proof lamp circuit board detection device according to claim 7, characterized in that: The transmission mechanism comprises a direction-changing box (39) fixed to a first bracket (6) and a second bracket (9) and connected to a first shaft rod (32) and a second shaft rod (33); a driving rod (18) is fixed to an axial end of the direction-changing box (39); a transmission wheel (36) is fixed to each of the transmission rod (16) and the driving rod (18); and the two transmission wheels (36) are connected via a transmission belt (37).

9. The LED explosion-proof lamp circuit board detection device according to claim 1, characterized in that: The invention also comprises a limiting mechanism for driving the two electrode columns (24) to move, the limiting mechanism comprising a limiting plate (19) fixed to the bottom of the mounting plate (3), both ends of the limiting plate (19) being inclined surfaces (22), and a plurality of slots (20) are provided through the limiting plate (19), and a protrusion (21) is formed on the limiting plate (19) between two adjacent slots (20), the moving plate (14) is provided with two sliding moving rods (23) extending upward and downward, the electrode column (24) is mounted on the bottom of the moving rod (23), a fixing ring (27) is fixedly connected to the moving rod (23), a reset spring (28) is fixedly connected to the fixing ring (27), the upper end of the reset spring (28) is fixedly connected to the bottom of the moving plate (14), and the reset spring (28) is sleeved on the outside of the moving rod (23), and the upper end of the moving rod (23) is provided with an annular arc surface (29).

10. The LED explosion-proof lamp circuit board detection device according to claim 9, characterized in that: A power source (25) is installed on the movable plate (14), and the power source (25) is electrically connected to a camera (26) and two electrode columns (24).

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