An automated plate checking apparatus

Abstract

The application discloses an automatic board testing equipment, and relates to the technical field of circuit board detection, which comprises a first conveying table, a second conveying table and a board testing machine arranged on the second conveying table and used for testing circuit boards. The first conveying table is internally provided with a first transmission belt and a second transmission belt from top to bottom. The second conveying table is internally provided with a third transmission belt. A transfer frame is arranged between the input end of the first conveying table and the output end of the second conveying table. The transfer frame is internally provided with a rotating shaft and a conveying frame. The conveying frame is arranged in the transfer frame through the rotating shaft. The conveying frame is internally provided with a fourth transmission belt. The transmission directions of the fourth transmission belt, the first transmission belt, the second transmission belt and the third transmission belt are consistent. The input end face of the fourth transmission belt does not exceed the input end face of the third transmission belt. The application is convenient for layering and transferring good circuit boards and non-good circuit boards.

Description

Technical Field

[0001] This invention relates to the technical field of circuit board testing, and in particular to an automatic circuit board testing device. Background Technology

[0002] Circuit boards are an indispensable component in various electrical devices. Through the circuits designed on the circuit boards, various electronic components and electrical devices are connected, realizing the signal transmission, signal processing, information storage, and execution of various functions of the electrical appliances.

[0003] Currently, after the circuit board is processed, it is necessary to inspect whether it meets the processing requirements, such as the opening condition on the circuit board. When the circuit board is inspected manually, the efficiency is low and the error is large. Therefore, in the circuit board testing process, it is necessary to equip the circuit board with inspection equipment to detect the circuit board.

[0004] However, existing circuit board inspection equipment requires manual sorting and identification of circuit boards to remove defective ones, which is not only time-consuming and labor-intensive but also inefficient. Therefore, in order to facilitate the transfer of good and defective circuit boards, an automatic inspection device is proposed. Summary of the Invention

[0005] This application provides an automatic board inspection device that facilitates the layered transfer of good and bad circuit boards.

[0006] This application provides an automatic board inspection device, which adopts the following technical solution:

[0007] An automatic board inspection device includes a first conveyor table, a second conveyor table, and a board inspection machine disposed on the second conveyor table for inspecting circuit boards. The first conveyor table has a first transmission belt and a second transmission belt arranged sequentially from top to bottom inside. The second conveyor table has a third transmission belt inside. A transfer frame is provided between the input end of the first conveyor table and the output end of the second conveyor table. The transfer frame has a rotating shaft and a conveyor frame inside. The conveyor frame is rotated within the transfer frame via the rotating shaft. The conveyor frame has a fourth transmission belt inside. The fourth transmission belt, the first transmission belt, the second transmission belt, and the third transmission belt have the same transmission direction. The input end face of the fourth transmission belt does not exceed the input end face of the third transmission belt.

[0008] By adopting the above technical solution, the second conveyor is used to transport the circuit board to be tested. When the circuit board is transported to the board inspection machine along with the third transmission belt, the quality inspection of the circuit board is realized. The board inspection machine detects the quality of the circuit board. By controlling the rotation of the rotating shaft, the tilt angle of the conveyor frame is controlled so that the output end of the fourth transmission belt faces the input end of the first transmission belt and the input end of the second transmission belt respectively. By controlling the tilt angle of the conveyor frame, it is convenient to transfer good and bad circuit boards to the first and second transmission belts respectively, which facilitates the layered transfer of good and bad circuit boards.

[0009] Preferably, the transfer frame is equipped with a controller and a first drive motor for driving the rotating shaft. The output end of the controller is connected to the input end of the first drive motor, and the input end of the controller is connected to the output end of the inspection machine.

[0010] By adopting the above technical solution, the board inspection machine is used to inspect the quality of the circuit board and transmit the inspection information to the controller. The controller controls the power supply of the first drive motor and controls the forward and reverse rotation of the shaft according to the information output from the board inspection machine, thereby automatically controlling the rotation angle of the conveyor frame.

[0011] Preferably, the fourth transmission belt includes a first drive shaft and a first driven shaft, and a plurality of first belt strips are provided on the outer side of the first drive shaft and the first driven shaft.

[0012] By adopting the above technical solution, the transmission of the first belt is realized by utilizing the co-rotation of the first driving shaft and the first driven shaft. The first belt is provided with several belts, which can reduce the friction between the first belt and the first driving shaft and the first driven shaft, thereby making the transmission smoother, reducing vibration and noise. Moreover, each first belt can be evenly subjected to force, thereby effectively improving the transmission efficiency and reducing energy loss.

[0013] Preferably, a separation area is formed between adjacent first belt strips, and a limiting shaft is provided inside the conveyor frame. Several rollers are provided on the limiting shaft. The rollers are rolled within the separation area, and the upper surface of the first belt strip is lower than the top cut surface of the roller.

[0014] By adopting the above technical solution, the two sides of the roller form lateral obstructions on the opposite sides of the two adjacent first belt strips, which can effectively correct the position of the first belt strips and prevent the first belt strips from shifting during transmission, thus affecting the transmission of the circuit board. In addition, the rotation of the roller facilitates the accelerated guidance of the circuit board on the transfer frame.

[0015] Preferably, a limiting wheel is provided on one side of the roller, the limiting wheel and the central axis of the roller are coincident, and the lower end of the limiting wheel is attached to the upper surface of the first belt strip.

[0016] By adopting the above technical solution, the limiting wheel set on the first belt is used to further limit the position of the first belt and prevent the first belt from deviating during transmission.

[0017] Preferably, the third transmission belt includes a second drive shaft and a second driven shaft, and the second drive shaft and the second driven shaft are provided with a plurality of second belt strips.

[0018] By adopting the above technical solution, the transmission of the second belt is realized by utilizing the co-rotation of the second driving shaft and the second driven shaft. Several second belts are provided, and each second belt can bear the load evenly, thereby making the load capacity of the entire third transmission belt stronger and able to withstand greater loads. In addition, since each second belt can be subjected to force evenly, the wear and damage of the second belt can be reduced, thereby extending the service life of the second belt.

[0019] Preferably, a plurality of support shafts are provided between the second drive shaft and the second driven shaft. The support shafts are rotatably disposed within the second conveyor table, and the top cut surface of the support shaft abuts against the lower surface of the second belt.

[0020] By adopting the above technical solution, since the span between the second driving shaft and the second driven shaft is large, bending is likely to occur in the middle of the second belt. Therefore, using multiple support shafts can effectively reduce the bending radius of the second belt, reduce bending losses, and thus improve transmission efficiency. In addition, multiple support shafts can effectively support the second belt, making it less prone to excessive vibration during transmission, thereby reducing vibration and noise and improving transmission smoothness. Furthermore, multiple support shafts can evenly distribute the load, reducing damage to the second belt and extending its service life. Moreover, multiple support shafts can effectively support the second belt, making it less prone to tooth skipping during transmission, thereby improving transmission reliability.

[0021] Preferably, an anti-jamming area is formed between two adjacent second belt strips, a displacement plate is movably provided on the lower side of the second belt strip, a support column is provided on the upper surface of the displacement plate, and the top of the support column penetrates through the anti-jamming area.

[0022] By adopting the above technical solution, since the outer surface of the circuit board is provided with several connectors, and the connectors are uneven, they are easy to get stuck between two adjacent second belts, affecting the conveying of the circuit board. Therefore, by movably setting a displacement plate on the lower side of the second belt, the displacement plate and the support column together move up and down in the anti-jamming area. The upward movement of the support column causes the connectors on the circuit board to disengage from the second belt, which can effectively prevent the circuit board from getting stuck on the second belt.

[0023] Preferably, there are several support columns, and the top of each support column is provided with casters.

[0024] By adopting the above technical solution, and by setting omnidirectional wheels on the top of the support column, the omnidirectional wheels come into direct contact with the circuit board during the upward movement of the support column. Because the omnidirectional wheels are rolled between the omnidirectional wheels and the circuit board, the vibration and impact on the circuit board are reduced, thus protecting the surface quality of the circuit board.

[0025] Preferably, the bottom of the displacement plate is provided with a driving assembly, which is located inside the second conveyor table.

[0026] By adopting the above technical solution, the displacement plate is driven so that it is movably positioned on the lower side of the second belt.

[0027] In summary, this application has the following beneficial effects:

[0028] 1. By setting up a second conveyor table for transporting circuit boards to be tested, when the circuit boards are transported to the board inspection machine along with the third transmission belt, the quality inspection of the circuit boards is realized. The board inspection machine detects the quality of the circuit boards. By controlling the rotation of the rotating shaft, the tilt angle of the conveyor frame is controlled so that the output end of the fourth transmission belt faces the input end of the first transmission belt and the input end of the second transmission belt respectively. By controlling the tilt angle of the conveyor frame, it is convenient to transfer good and bad circuit boards to the first and second transmission belts respectively, which facilitates the layered transfer of good and bad circuit boards. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the automatic board inspection equipment in this embodiment;

[0030] Figure 2 This is a schematic diagram of the flip-shaped overall structure of the conveyor frame in this embodiment;

[0031] Figure 3 This is a schematic diagram of the overall internal structure of the fourth transmission belt in this embodiment;

[0032] Figure 4 This is an exploded view of the structure between the roller and the first belt in this embodiment;

[0033] Figure 5 This is a schematic diagram of the overall structure of the second conveyor table in this embodiment;

[0034] Figure 6 This is an exploded view of the structure between the third transmission belt and the displacement plate in this embodiment;

[0035] Figure 7 This is a schematic diagram of the overall internal structure of the driving component in this embodiment;

[0036] Explanation of reference numerals in the attached drawings: 1. First conveyor table; 2. Second conveyor table; 3. Inspection machine; 4. First transmission belt; 5. Second transmission belt; 6. Third transmission belt; 601. Second drive shaft; 602. Second driven shaft; 603. Second belt strip; 604. Support shaft; 7. Transfer frame; 8. Rotating shaft; 9. Conveyor frame; 10. First drive motor; 11. Fourth transmission belt; 1101. First drive shaft; 1102. First driven shaft; 1103. First belt strip; 1104. Limiting shaft; 1105. Roller; 1106. Limiting wheel; 12. Displacement plate; 13. Support column; 14. Universal wheel; 15. Drive assembly; 1501. Second drive motor; 1502. First fixing block; 1503. Second fixing block; 1504. First connecting rod; 1505. Second connecting rod; 1506. Y-shaped rod. Detailed Implementation

[0037] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0038] Example: This invention discloses an automatic board inspection device, such as... Figures 1-2As shown, the system includes a first conveyor table 1, a second conveyor table 2, and a board inspection machine 3 mounted on the second conveyor table 2 for inspecting circuit boards. The first conveyor table 1 has, from top to bottom, a first transmission belt 4 for conveying good circuit boards and a second transmission belt 5 for conveying non-good circuit boards. The second conveyor table 2 has a third transmission belt 6. A transfer frame 7 is located between the input end of the first conveyor table 1 and the output end of the second conveyor table 2. The transfer frame 7 has a rotating shaft 8 and a conveyor frame 9 inside. The conveyor frame 9 rotates within the transfer frame 7 via the rotating shaft 8. The transfer frame 7 has a controller and a first drive motor 10 for driving the rotating shaft 8. The output end of the controller is connected to the input end of the first drive motor 10, and the input end of the controller is connected to the output end of the board inspection machine 3. The conveyor frame 9 has a fourth transmission belt 11 inside. The fourth transmission belt 11, the first transmission belt 4, the second transmission belt 5, and... The transmission direction of the third transmission belt 6 is consistent, and the input end face of the fourth transmission belt 11 does not exceed the input end face of the third transmission belt 6. The second conveyor table 2 is used to transport the circuit board to be tested. When the circuit board is transported to the board inspection machine 3 along with the third transmission belt 6, the quality inspection of the circuit board is realized. The board inspection machine 3 detects the quality of the circuit board and transmits the information after inspection to the controller. The controller controls the power supply of the first drive motor 10 according to the information output from the board inspection machine 3, and controls the forward and reverse rotation of the rotating shaft 8, thereby automatically controlling the rotation angle of the conveyor frame 9, so that the output end of the fourth transmission belt 11 faces the input end of the first transmission belt 4 and the input end of the second transmission belt 5 respectively. By controlling the tilt angle of the conveyor frame 9, it is convenient to transfer good and bad circuit boards to the first transmission belt 4 and the second transmission belt 5 respectively, which facilitates the automatic layered transfer of good and bad circuit boards.

[0039] like Figures 3-4As shown, the fourth transmission belt 11 includes a first drive shaft 1101 and a first driven shaft 1102. Several first belt strips 1103 are provided on the outer sides of the first drive shaft 1101 and the first driven shaft 1102. The first belt strips 1103 are driven by the co-rotation of the first drive shaft 1101 and the first driven shaft 1102. The presence of several first belt strips 1103 reduces friction between the first belt strips 1103 and the first drive shaft 1101 and the first driven shaft 1102, resulting in smoother transmission, reduced vibration and noise. Furthermore, each first belt strip 1103 is evenly subjected to force, effectively improving transmission efficiency and reducing energy loss. A separation area is formed between adjacent first belt strips 1103. A limiting shaft 1104 is provided inside the conveyor frame 9, and several rollers 1105 are mounted on the limiting shaft 1104. Roller 1105 is rolled within the separation area. The upper surface of the first belt 1103 is lower than the top cross-section of roller 1105. The two sides of roller 1105 form lateral obstructions on the opposite sides of two adjacent first belts 1103, which can effectively correct the position of the first belt 1103 and prevent the first belt 1103 from shifting during transmission, thus affecting the transmission of the circuit board. In addition, the rotation of roller 1105 facilitates the accelerated guidance of the circuit board on the transfer frame 7. A limiting wheel 1106 is provided on one side of roller 1105. The central axis of limiting wheel 1106 coincides with that of roller 1105, and the lower end of limiting wheel 1106 is in contact with the upper surface of first belt 1103. The limiting wheel 1106 provided on the first belt 1103 is used to further limit the position of the first belt 1103 and prevent the first belt 1103 from shifting during transmission.

[0040] like Figures 5-6As shown, the third transmission belt 6 includes a second drive shaft 601 and a second driven shaft 602. Several second belt strips 603 are provided on the second drive shaft 601 and the second driven shaft 602. The transmission of the second belt strips 603 is achieved by the co-rotation of the second drive shaft 601 and the second driven shaft 602. Since there are several second belt strips 603, each can evenly bear the load, thus making the entire third transmission belt 6 have a stronger load capacity and can withstand greater loads. Furthermore, because each second belt strip 603 can be evenly subjected to force, wear and damage to the second belt strips 603 can be reduced, thereby extending the service life of the second belt strips 603. Several support shafts 604 are provided between the second drive shaft 601 and the second driven shaft 602. The support shafts 604 are rotatably mounted within the second conveyor table 2, and the top cut surface of the support shaft 604 is flush with the second belt strip. The lower surfaces of the belt 603 abut against each other. Due to the large span between the second driving shaft 601 and the second driven shaft 602, bending is prone to occur in the middle of the second belt 603. Therefore, using multiple support shafts 604 can effectively reduce the bending radius of the second belt 603, reduce the bending loss of the second belt 603, thereby improving transmission efficiency. In addition, multiple support shafts 604 can effectively support the second belt 603, making it less prone to excessive vibration during transmission, thereby reducing vibration and noise and improving transmission smoothness. Furthermore, multiple support shafts 604 can evenly distribute the load, reducing damage to the second belt 603 and extending its service life. Moreover, multiple support shafts 604 can effectively support the second belt 603, making it less prone to phenomena such as tooth skipping during transmission, thereby improving transmission reliability.

[0041] like Figure 6 As shown, an anti-jamming zone is formed between two adjacent second belts 603. A displacement plate 12 is movably installed on the lower side of the second belt 603, and a support column 13 is provided on the upper surface of the displacement plate 12. The top of the support column 13 penetrates through the anti-jamming zone. Since the outer surface of the circuit board has several connectors, and the connectors are uneven, they are easy to get stuck between two adjacent second belts 603, affecting the conveying of the circuit board. Therefore, by movably installing the displacement plate 12 on the lower side of the second belt 603, the displacement plate 12 and the support column 13 are positioned in the anti-jamming zone. The support column 13 moves up and down within the domain. The upward movement of the support column 13 disengages the connectors on the circuit board from the second belt 603, effectively preventing the circuit board from getting stuck on the second belt 603. Several support columns 13 are provided, and the top of each support column 13 is equipped with a caster wheel 14. By providing the caster wheel 14 at the top of the support column 13, the caster wheel 14 directly contacts the circuit board during the upward movement of the support column 13. Due to the rolling arrangement between the caster wheel 14 and the circuit board, the vibration and impact on the circuit board are reduced, protecting the surface quality of the circuit board.

[0042] like Figure 7 As shown, a drive assembly 15 is provided at the bottom of the displacement plate 12, and the drive assembly 15 is located inside the second conveyor table 2. The drive assembly 15 includes a Y-shaped rod 1506, a second drive motor 1501 located inside the second conveyor table 2, a first fixing block 1502, and a second fixing block 1503. The Y-shaped rod 1506 is provided with a first connecting end, a second connecting end, and a third connecting end. A first connecting rod 1504 is rotatably mounted on the first fixing block 1502. One end of the first connecting rod 1504 is hinged to the first fixing block 1502, and the other end of the first connecting rod 1504 is hinged to the first connecting end of the Y-shaped rod 1506. A second connecting rod 1505 is rotatably mounted on the second fixing block 1503. One end of the second connecting rod 1505 is hinged to the second fixing block 1506. The blocks 1503 are hinged together. The other end of the second connecting rod 1505 is hinged to the second connecting end of the Y-shaped rod 1506. The third connecting end of the Y-shaped rod 1506 is hinged to the bottom of the displacement plate 12. The output end of the second drive motor 1501 is connected to the second connecting rod 1505. When in use, the user can turn on the power of the second drive motor 1501. Under the action of the second drive motor 1501, the second connecting rod 1505 makes a circular motion, and the Y-shaped rod 1506 and the first connecting rod 1504 move together. Under the action of the Y-shaped rod 1506, the displacement plate 12 makes an elliptical intermittent motion, and the support column 13 makes an elliptical intermittent motion in the anti-jamming area, and pushes the circuit board obliquely in the transmission direction of the third transmission belt 6.

[0043] Working principle: When in use, the user first places the circuit board to be tested on the upper surface of the third transmission belt 6. The circuit board to be tested is driven by the third transmission belt 6 into the interior of the board inspection machine 3. Under the action of the board inspection machine 3, the quality of the circuit board is detected and the information after detection is transmitted to the controller. The controller controls the power supply of the first drive motor 10 and controls the forward and reverse rotation of the rotating shaft 8 according to the information output from the board inspection machine 3, thereby automatically controlling the rotation angle of the conveyor frame 9.

[0044] When the signal output by the board inspection machine 3 is a non-defective circuit board, the conveyor frame 9 is in a horizontal state, and the output end of the fourth transmission belt 11 faces the input end of the second transmission belt 5, which is used to transfer the non-defective circuit board to the second transmission belt 5; when the signal output by the board inspection machine 3 is a good circuit board, the controller controls the power supply of the first drive motor 10, causing the conveyor frame 9 to rotate, and the output end of the fourth transmission belt 11 faces the input end of the first transmission belt 4, which is used to transfer the good circuit board to the first transmission belt 4, thereby facilitating the automatic layered transfer of good and non-defective circuit boards.

[0045] It is worth noting that by using the drive assembly 15, the displacement plate 12 makes an intermittent elliptical movement below the third transmission belt 6 and pushes the circuit board obliquely in the transmission direction of the third transmission belt 6, so that the connectors on the circuit board are disengaged from the second belt 603, which can effectively prevent the circuit board from getting stuck on the second belt 603.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic circuit board inspection device, comprising a first conveyor table (1), a second conveyor table (2), and a circuit board inspection machine (3) disposed on the second conveyor table (2) for inspecting circuit boards, characterized in that: The first conveyor platform (1) is provided with a first transmission belt (4) and a second transmission belt (5) from top to bottom inside. The second conveyor platform (2) is provided with a third transmission belt (6) inside. A transfer frame (7) is provided between the input end of the first conveyor platform (1) and the output end of the second conveyor platform (2). The transfer frame (7) is provided with a rotating shaft (8) and a conveyor frame (9) inside. The conveyor frame (9) is rotated inside the transfer frame (7) via the rotating shaft (8). The conveyor frame (9) is provided with a fourth transmission belt (11) inside. The transmission directions of the fourth transmission belt (11), the first transmission belt (4), the second transmission belt (5) and the third transmission belt (6) are consistent. The input end face of the fourth transmission belt (11) does not exceed the input end face of the third transmission belt (6). The third transmission belt (6) includes a second drive shaft (601) and a second driven shaft (602), and a plurality of second belt strips (603) are provided on the second drive shaft (601) and the second driven shaft (602); A plurality of support shafts (604) are provided between the second drive shaft (601) and the second driven shaft (602). The support shafts (604) are rotatably disposed in the second conveyor table (2). The top cut surface of the support shaft (604) abuts against the lower surface of the second belt (603). An anti-jamming area is formed between two adjacent second belt strips (603). A displacement plate (12) is movably provided on the lower side of the second belt strip (603). A support column (13) is provided on the upper surface of the displacement plate (12). The top of the support column (13) penetrates the anti-jamming area. The support column (13) is provided in several parts, and the top of the support column (13) is provided with casters (14); The bottom of the displacement plate (12) is provided with a driving assembly (15), which is located inside the second conveyor table (2); The drive assembly (15) is located inside the second conveyor table (2). The drive assembly (15) includes a Y-shaped rod (1506), a second drive motor (1501) located inside the second conveyor table (2), a first fixing block (1502), and a second fixing block (1503). The Y-shaped rod (1506) is provided with a first connecting end, a second connecting end, and a third connecting end. A first connecting rod (1504) is rotatably mounted on the first fixing block (1502). One end of the first connecting rod (1504) is hinged to the first fixing block (1502), and the other end of the first connecting rod (1504) is hinged to the first connecting end of the Y-shaped rod (1506). A second connecting rod (1505) is rotatably mounted on the second fixing block (1503). One end of the second connecting rod (1505) is hinged to the second fixing block (1503). The second connecting rod (1505) is hinged to the second connecting end of the Y-shaped rod (1506). The third connecting end of the Y-shaped rod (1506) is hinged to the bottom of the displacement plate (12). The output end of the second drive motor (1501) is connected to the second connecting rod (1505). When in use, the user can start the power supply of the second drive motor (1501). Under the action of the second drive motor (1501), the second connecting rod (1505) will make a circular motion, and the Y-shaped rod (1506) and the first connecting rod (1504) will move together. Under the action of the Y-shaped rod (1506), the displacement plate (12) will make an elliptical intermittent motion, and the support column (13) will make an elliptical intermittent motion in the anti-jamming area, and push the circuit board obliquely in the transmission direction of the third transmission belt (6).

2. The automatic board inspection equipment according to claim 1, characterized in that: The transfer frame (7) is equipped with a controller and a first drive motor (10) for driving the rotating shaft (8). The output end of the controller is connected to the input end of the first drive motor (10), and the input end of the controller is connected to the output end of the inspection machine (3).

3. The automatic board inspection equipment according to claim 1, characterized in that: The fourth transmission belt (11) includes a first drive shaft (1101) and a first driven shaft (1102), and a plurality of first belt strips (1103) are provided on the outer side of the first drive shaft (1101) and the first driven shaft (1102).

4. The automatic board inspection equipment according to claim 3, characterized in that: A separation area is formed between adjacent first belt strips (1103). The inside of the conveyor frame (9) is provided with a limiting shaft (1104). The limiting shaft (1104) is provided with a plurality of rollers (1105). The rollers (1105) are rolled within the separation area. The upper surface of the first belt strip (1103) is lower than the top cut surface of the rollers (1105).

5. The automatic board inspection equipment according to claim 4, characterized in that: A limiting wheel (1106) is provided on one side of the roller (1105). The central axis of the limiting wheel (1106) coincides with that of the roller (1105), and the lower end of the limiting wheel (1106) is attached to the upper surface of the first belt strip (1103).

Images