A code scanning and reading mechanism at the bottom of a PCB

Abstract

The utility model relates to PCB board scan code reading code technical field. Especially, it relates to a kind of PCB board bottom scan code reading code mechanism, including mounting plate;First side is fixedly arranged on mounting plate, second side is slidably arranged on mounting plate;Fixed support and sliding support are respectively arranged on first side and second side;Fixed support and sliding support are all equipped with conveying track, and two conveying tracks are matched to transport PCB board;Support driving part is used to drive second side to slide towards or away from first side;First side is equipped with hollow mounting groove;Driving assembly is installed between the working area of fixed support and sliding support, and driving assembly is used to drive scan code reading code unit to move;Driving assembly and support driving part all include driving unit and transmission unit, and the driving unit of driving assembly and the driving unit of support driving part are all installed in hollow mounting groove.This application improves the problem that scan code reading code structure is not compact and stability is poor.

Description

Technical Field

[0001] This utility model relates to the field of PCB board barcode scanning and reading technology, and more specifically, to a barcode scanning and reading mechanism for the bottom of a PCB board. Background Technology

[0002] PCB board barcode scanning is a technical process that uses scanning equipment to identify QR codes, barcodes, and other markings on PCB boards to achieve functions such as production traceability, quality control, and logistics management.

[0003] The existing technology references Chinese patent CN216670736U, which discloses an automatic barcode reading device for laser-engraved PCB circuit board components. The device includes a base plate, a receiving plate on top of the base plate, a PCB component on the upper surface of the receiving plate, a limiter at one end of the PCB component, a contact elastic sheet connected to the inner wall of the limiter, an adjusting slider connected below the limiter, an adjusting groove connected to the outer wall of the adjusting slider, a cleaning tube on one side of the domestic barcode reader, and a scanning slider connected to the lower side of a moving crossbeam. A scanning threaded rod is connected inside the scanning slider, and a scanning groove is connected to the outer wall of the scanning slider. One end of the scanning threaded rod is connected to a rotating motor. During the scanning process of the PCB board, the overall structure is loose and has poor structural stability, failing to guarantee the stability of both the scanning and the PCB board, resulting in unclear barcode reading. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the barcode scanning and reading structure is not compact and has poor stability. In view of the above-mentioned defects of the prior art, a barcode scanning and reading mechanism for the bottom of a PCB board is provided.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A PCB board bottom scanning and reading mechanism includes a mounting plate, a fixed bracket, a sliding bracket, a bracket driver, a driving assembly, and a scanning and reading unit. A first side is fixedly provided on the mounting plate, and a second side is slidably provided on the mounting plate; the fixed bracket and the sliding bracket are respectively provided on the first side and the second side; both the fixed bracket and the sliding bracket are equipped with conveying rails, and the two conveying rails cooperate to transport the PCB board; the bracket driving component is used to drive the second side to slide toward or away from the first side; the first side is provided with a hollow mounting groove; The drive assembly is installed in the working area between the fixed bracket and the sliding bracket. The drive assembly is used to drive the barcode scanning and reading unit to move between the fixed bracket and the sliding bracket. Both the drive assembly and the bracket drive component include a drive unit and a transmission unit. The drive unit of the drive assembly and the drive unit of the bracket drive component are installed in the hollow mounting slot.

[0006] By adopting the above technical solution, the driving unit of the driving component and the driving unit of the bracket driving component are both installed in the hollow mounting slot. The driving component is installed directly below the PCB board. The driving component drives the barcode scanning and reading unit to move at the bottom of the PCB board. The bracket driving component adjusts the distance between the fixed bracket and the sliding bracket. The components are arranged compactly. Combined with the barcode scanning and reading unit to take pictures, scan and read codes at the bottom of the PCB board, the entire barcode scanning and reading mechanism has a compact and stable structure and a reasonable layout. It can flexibly adjust the position of the barcode scanning and reading unit to meet the barcode scanning and reading needs of the bottom of PCB boards of different specifications, and improve the versatility and applicability of the mechanism.

[0007] Preferably, the driving component includes an X-axis drive and a Y-axis drive; the X-axis drive is disposed at the movable end of the Y-axis drive, and the X-axis drive is driven by the Y-axis drive to slide below the PCB board; the barcode scanning unit is installed at the movable end of the X-axis drive, and the barcode scanning unit is driven by the X-axis drive to slide below the PCB board.

[0008] Preferably, the X-axis drive component includes an X-axis guide rail and an X-axis transmission screw. The X-axis guide rail is mounted on a mounting plate, and the X-axis transmission screw is rotatably connected to the X-axis guide rail and driven to rotate by a motor. The mounting component is slidably connected to the X-axis guide rail, and the X-axis transmission screw passes through the mounting component, with the X-axis transmission screw threadedly engaging with the mounting component.

[0009] By adopting the above technical solution, the X-axis drive component uses a combination of an X-axis guide rail and an X-axis transmission screw. The X-axis guide rail provides sliding guidance for the mounting component, and the motor drives the X-axis transmission screw to rotate. Since the X-axis transmission screw is threadedly engaged with the mounting component, when the screw rotates, according to the principle of threaded transmission, the mounting component will slide linearly on the X-axis guide rail, thereby driving the barcode scanning unit mounted on it to achieve precise adjustment of the X-axis position. This results in high precision and stability in the X-axis movement of the barcode scanning unit, enabling accurate alignment with the barcode position on the PCB board and improving the accuracy and efficiency of barcode scanning. Simultaneously, the screw drive structure is simple and reliable, facilitating maintenance and component replacement, reducing equipment maintenance costs, and ensuring long-term stable operation of the mechanism.

[0010] Preferably, the Y-axis drive component includes a Y-axis slide rail and a Y-axis transmission screw. The Y-axis slide rail is mounted on the mounting plate perpendicular to the X-axis guide rail, and two Y-axis slide rails are symmetrically arranged along the axial direction of the mounting plate. A sliding part is provided on the side wall of the X-axis guide rail, and the sliding part is slidably engaged with the Y-axis slide rail. The Y-axis transmission screw is rotatably connected to the mounting plate parallel to the Y-axis slide rail, passes through the X-axis guide rail, and is threadedly engaged with the X-axis guide rail. The Y-axis transmission screw is driven to rotate by a motor.

[0011] By adopting the above technical solution and setting the Y-axis drive component, the movement range of the barcode scanning unit is further expanded, enabling it to be flexibly adjusted in the Y-axis direction. In conjunction with the X-axis drive component, the barcode scanning unit can move freely in a two-dimensional plane, fully covering the bottom area of ​​the PCB board, ensuring that all barcodes on the PCB board are scanned, avoiding scanning blind spots, and improving the integrity and reliability of barcode scanning.

[0012] Preferably, the mounting plate is provided with a stabilizing component, which is used to enhance the stability of the drive component; the stabilizing component includes an X-axis auxiliary chain and a Y-axis auxiliary chain, which are respectively arranged parallel to the X-axis guide rail and the Y-axis slide rail; a stabilizing connection part is provided on the side wall of the X-axis guide rail, and the end of the X-axis auxiliary chain is connected to the stabilizing connection part; the end of the Y-axis guide rail is connected to the side wall of the X-axis guide rail.

[0013] By adopting the above technical solution, the auxiliary chain plays a supporting and stabilizing role during the operation of the drive component, distributing some of the force generated during movement and reducing the swaying and offset of the drive component. The addition of the stabilizing component enhances the stability of the drive component, effectively reducing the vibration of the barcode scanning unit during movement, ensuring the accuracy of the barcode scanning unit's position during scanning, and improving the accuracy and success rate of barcode scanning. At the same time, stable operation can extend the service life of the drive component and the barcode scanning unit, reduce the failure rate of the equipment due to vibration and other problems, and improve the reliability and stability of the equipment.

[0014] Preferably, the support drive component includes a stabilizing slide rail, which is disposed on the mounting plate and parallel to the movement direction of the X-axis drive component. A movable part is provided on the side of the sliding support corresponding to the stabilizing slide rail, and the movable part slides in cooperation with the stabilizing slide rail. A stabilizing transmission screw is rotatably connected to the mounting plate, passing through the sliding support and threadedly engaging with it. The stabilizing transmission screw is driven to rotate by a motor. A mounting position is provided at the end of the fixed support, the mounting position having an L-shaped cross-section, and the fixed track is bolted to the mounting position.

[0015] By adopting the above technical solution, the rotating stable conveyor screw drives the sliding bracket to slide on the stable slide rail, thereby adjusting the width of the conveyor track to accommodate PCB boards of different widths. The adjustable conveyor track design allows the mechanism to be compatible with PCB boards of various specifications, greatly improving the versatility and applicability of the equipment, reducing the cost and time required to replace equipment due to different PCB board specifications, improving production efficiency, and meeting diverse production needs. The design of the fixed bracket and L-shaped mounting position provides a reliable installation structure for the fixed track, ensuring the overall stability and strength of the conveyor track, making the PCB board more stable during placement and transmission, avoiding PCB board position shifts due to unstable conveyor track, and affecting the accuracy of barcode scanning and reading, thus ensuring stable transmission of PCB boards.

[0016] Preferably, the mounting component includes a mounting block and a movable box, the movable box partially surrounds the mounting block, the movable box slides with the X-axis guide rail, the mounting block is fixedly connected to the movable box, and the barcode scanning unit is connected to the mounting block.

[0017] By adopting the above technical solution, the sliding of the moving box on the X-axis guide rail drives the mounting block and the barcode scanning unit to move, thereby adjusting the position of the barcode scanning unit. The semi-enclosed structure of the moving box provides a certain degree of protection and fixation for the mounting block. This mounting component design facilitates the installation and disassembly of the barcode scanning unit, making it convenient for maintenance and replacement. Simultaneously, the structural design of the moving box and mounting block ensures the stability of the barcode scanning unit during movement, reducing shaking caused by insecure installation, improving the accuracy and reliability of barcode scanning, and is simple in structure and easy to process and manufacture.

[0018] Preferably, the sidewall of the conveying track is provided with a PCB board moving assembly, which includes a conveyor belt, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably connected to the sidewall of the conveying track. The conveyor belt is wound around the drive wheel and the driven wheel. There are multiple driven wheels. The conveyor belt on the multiple driven wheels is pulled parallel to the length direction of the conveying track. A tensioning wheel is provided on the sidewall of the conveying track, and the conveyor belt is wound around the circumference of the tensioning wheel.

[0019] By adopting the above technical solution, the drive wheel is driven by a motor to rotate, which in turn drives the conveyor belt wound around the drive wheel, driven wheel, and tension wheel. Multiple driven wheels pull the conveyor belt parallel to the length of the conveyor track. As the conveyor belt runs, it moves the PCB boards placed on the conveyor track. The tension wheel is used to adjust the tension of the conveyor belt, ensuring smooth operation. The PCB board moving assembly enables automatic transfer of the PCB boards on the conveyor track without manual intervention, improving production efficiency and reducing labor costs. Simultaneously, the stable operation of the conveyor belt ensures the stable position of the PCB boards during transport, facilitating accurate scanning by the barcode scanning unit, ensuring the continuity and accuracy of the scanning process, and enhancing the automation level and performance of the entire barcode scanning mechanism.

[0020] The beneficial effects of this utility model are as follows: the mounting plate, as the core carrier, provides an installation platform for the barcode scanning and reading unit and the drive assembly. The side conveyor rail is used to place the PCB board, and the drive assembly is located between the conveyor rail and the mounting plate. The Y-axis drive component can slide on the mounting plate, and the X-axis drive component can slide on the Y-axis drive component. Through this dual sliding structure, the barcode scanning and reading unit installed on the X-axis drive component mounting component can realize the movement of the X-axis and Y-axis, thereby adjusting to a suitable position to scan and read the barcodes on the bottom of the PCB board. This makes the entire barcode scanning and reading mechanism compact and rationally laid out, and allows for flexible adjustment of the position of the barcode scanning and reading unit to meet the barcode scanning and reading requirements of the bottom of PCB boards of different specifications, thus improving the versatility and applicability of the mechanism. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the barcode scanning and reading mechanism at the bottom of the PCB board in an embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the structure of the driving component in an embodiment of this application.

[0023] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 2. Barcode scanning unit; 3. X-axis drive component; 31. X-axis guide rail; 32. X-axis transmission screw; 33. Sliding part; 4. Y-axis drive component; 41. Y-axis slide rail; 42. Y-axis transmission screw; 5. Mounting component; 51. Mounting block; 52. Moving box; 6. Conveying track; 61. Sliding bracket; 62. Fixed bracket; 63. Stabilizing slide rail; 64. Moving part; 65. Stabilizing transmission screw; 66. Hollowed-out mounting slot; 67. Mounting position; 7. Stabilizing component; 71. X-axis auxiliary chain; 72. Y-axis auxiliary chain; 73. Stabilizing connection part; 8. PCB board moving component; 81. Conveyor belt; 82. Drive wheel; 83. Driven wheel; 84. Tensioning wheel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, of the embodiments of this utility model. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] The preferred embodiment of this utility model is as follows: Figure 1 As shown, a PCB board bottom scanning and reading mechanism includes a mounting plate 1, a fixed bracket 62, a sliding bracket 61, a bracket driver, a driving assembly, a scanning and reading unit 2, and a stabilizing assembly 7.

[0027] A first side is fixedly provided on the mounting plate 1, and a second side is slidably provided on the mounting plate 1; a fixed bracket 62 and a sliding bracket 61 are respectively provided on the first side and the second side; a conveying rail 6 is installed on both the fixed bracket 62 and the sliding bracket 61, and the two conveying rails 6 cooperate to transport the PCB board; a bracket driving component is used to drive the second side to slide toward or away from the first side; a hollow mounting groove 66 is provided on the first side; The drive assembly is installed in the working area between the fixed bracket 62 and the sliding bracket 61. The drive assembly is used to drive the scanning and reading unit 2 to move. Both the drive assembly and the bracket drive include a drive unit and a transmission unit. The drive unit of the drive assembly and the drive unit of the bracket drive are installed in the hollow mounting slot 66.

[0028] Both the drive unit of the drive assembly and the drive unit of the bracket drive are installed in the hollow mounting slot 66. The drive assembly is installed directly below the PCB board. The drive assembly drives the barcode scanning and reading unit 2 to move on the bottom of the PCB board. The bracket drive adjusts the distance between the fixed bracket 62 and the sliding bracket 61. The components are arranged compactly. Combined with the barcode scanning and reading unit 2, the barcode scanning and reading mechanism performs scanning and reading on the bottom of the PCB board. This makes the entire barcode scanning and reading mechanism compact, stable and reasonably laid out. The position of the barcode scanning and reading unit 2 can be flexibly adjusted to meet the barcode scanning and reading requirements of the bottom of PCB boards of different specifications, thus improving the versatility and applicability of the mechanism.

[0029] The driving components include an X-axis drive 3 and a Y-axis drive 4; the X-axis drive 3 is located at the movable end of the Y-axis drive 4, and the X-axis drive 3 is driven by the Y-axis drive 4 to slide under the PCB board; the barcode scanning and reading unit 2 is installed at the movable end of the X-axis drive 3, and the barcode scanning and reading unit 2 is driven by the X-axis drive 3 to slide under the PCB board.

[0030] The X-axis drive component 3 includes an X-axis guide rail 31 and an X-axis transmission screw 32. The X-axis guide rail 31 is mounted on the mounting plate 1, and the X-axis transmission screw 32 is rotatably connected to the X-axis guide rail 31. The X-axis transmission screw 32 is driven to rotate by a motor. The mounting component 5 is slidably connected to the X-axis guide rail 31, and the X-axis transmission screw 32 passes through the mounting component 5, and the X-axis transmission screw 32 is threadedly engaged with the mounting component 5.

[0031] The Y-axis drive component 4 includes a Y-axis slide rail 41 and a Y-axis transmission screw 42. The Y-axis slide rail 41 is mounted on the mounting plate 1 perpendicular to the X-axis guide rail 31, and two Y-axis slide rails 41 are symmetrically arranged along the axial direction of the mounting plate 1. A sliding part 33 is provided on the side wall of the X-axis guide rail 31, and the sliding part 33 is slidably engaged with the Y-axis slide rail 41. The Y-axis transmission screw 42 is rotatably connected to the mounting plate 1 parallel to the Y-axis slide rail 41, and the Y-axis transmission screw 42 passes through the X-axis guide rail 31 and is threadedly engaged with the X-axis guide rail 31. The Y-axis transmission screw 42 is driven to rotate by a motor.

[0032] The X-axis drive unit 3 employs a combination of an X-axis guide rail 31 and an X-axis transmission screw 32. The X-axis guide rail 31 provides a sliding guide for the mounting component 5. The motor drives the X-axis transmission screw 32 to rotate. Due to the threaded engagement between the X-axis transmission screw 32 and the mounting component 5, when the screw rotates, according to the principle of threaded transmission, the mounting component 5 will slide linearly on the X-axis guide rail 31, thereby driving the barcode scanning unit 2 mounted on it to achieve precise adjustment of the X-axis position. This results in high precision and stability in the X-axis movement of the barcode scanning unit 2, enabling accurate alignment with the barcode position on the PCB board and improving the accuracy and efficiency of barcode scanning. Simultaneously, the screw drive structure is simple and reliable, facilitating maintenance and component replacement, reducing equipment maintenance costs, and ensuring long-term stable operation of the mechanism.

[0033] By setting the Y-axis drive unit 4, the movement range of the barcode scanning and reading unit 2 is further expanded, allowing it to be flexibly adjusted in the Y-axis direction. In conjunction with the X-axis drive unit 3, the barcode scanning and reading unit 2 can move freely in the two-dimensional plane, fully covering the bottom area of ​​the PCB board, ensuring that all barcodes on the PCB board are scanned, avoiding scanning blind spots, and improving the integrity and reliability of barcode scanning.

[0034] The mounting plate 1 is provided with a stabilizing component 7, which is used to enhance the stability of the drive component. The stabilizing component 7 includes an X-axis auxiliary chain 71 and a Y-axis auxiliary chain 72. The X-axis auxiliary chain 71 and the Y-axis auxiliary chain 72 are respectively arranged parallel to the X-axis guide rail 31 and the Y-axis slide rail 41. A stabilizing connection part 73 is provided on the side wall of the X-axis guide rail 31, and the end of the X-axis auxiliary chain 71 is connected to the stabilizing connection part 73. The end of the Y-axis guide rail is connected to the side wall of the X-axis guide rail.

[0035] During the operation of the drive component, the auxiliary chain provides support and stability, distributing some of the force generated during movement and reducing the swaying and offset of the drive component. The addition of stabilizing component 7 enhances the stability of the drive component, effectively reducing the vibration of the barcode scanning unit 2 during movement, ensuring the accuracy of the barcode scanning unit 2's position during scanning, and improving the accuracy and success rate of barcode scanning. Simultaneously, stable operation extends the service life of the drive component and barcode scanning unit 2, reduces the failure rate caused by vibration and other problems, and improves the reliability and stability of the equipment.

[0036] The support drive includes a stabilizing slide rail 63, which is mounted on the mounting plate 1 and parallel to the movement direction of the X-axis drive 3. A moving part 64 is provided on the side of the sliding bracket 61 corresponding to the stabilizing slide rail 63, and the moving part 64 is slidably engaged with the stabilizing slide rail 63. A stabilizing transmission screw 65 is rotatably connected to the mounting plate 1. The stabilizing transmission screw 65 passes through the sliding bracket 61 and is threadedly engaged with the sliding bracket 61. The stabilizing transmission screw 65 is driven to rotate by a motor. A mounting position 67 is provided at the end of the fixed bracket 62. The cross-section of the mounting position 67 is L-shaped, and the fixed rail is bolted to the mounting position 67.

[0037] When the stabilizing conveyor screw 65 rotates, it drives the sliding bracket 61 to slide on the stabilizing slide rail 63, thereby adjusting the width of the conveyor track 6 to accommodate PCBs of different widths. The adjustable conveyor track 6 design allows the mechanism to be compatible with various PCB specifications, greatly improving the equipment's versatility and applicability. It reduces the cost and time of changing equipment due to different PCB specifications, increases production efficiency, and meets diverse production needs. The design of the fixed bracket 62 and the L-shaped mounting position 67 provides a reliable mounting structure for the fixed track, ensuring the overall stability and strength of the conveyor track 6. This makes the PCBs more stable during placement and transmission, preventing the PCBs from shifting due to instability of the conveyor track 6, which would affect the accuracy of barcode scanning and reading, and ensuring stable transmission of the PCBs.

[0038] The side wall of the conveying track 6 is provided with a PCB board moving assembly 8, which includes a conveyor belt 81, a driving wheel 82 and a driven wheel 83. The driving wheel 82 and the driven wheel 83 are rotatably connected to the side wall of the conveying track 6. The conveyor belt 81 is wound around the driving wheel 82 and the driven wheel 83. Multiple driven wheels 83 are provided. The conveyor belt 81 on the multiple driven wheels 83 is pulled parallel to the length direction of the conveying track 6. A tensioning wheel 84 is provided on the side wall of the conveying track 6. The conveyor belt is wound around the circumference of the tensioning wheel 84.

[0039] The drive wheel 82 is driven by a motor, which rotates the conveyor belt 81, which is wound around the drive wheel 82, driven wheels 83, and tension wheel 84. Multiple driven wheels 83 pull the conveyor belt 81 parallel to the length of the conveyor track 6. As the conveyor belt 81 moves, it moves the PCB boards placed on the conveyor track 6. The tension wheel 84 adjusts the tension of the conveyor belt 81 to ensure its smooth operation. The PCB board moving assembly 8 enables automatic transfer of the PCB boards on the conveyor track 6 without manual intervention, improving production efficiency and reducing labor costs. Simultaneously, the stable operation of the conveyor belt 81 ensures the stable position of the PCB boards during transport, facilitating accurate scanning and reading by the barcode scanning unit 2. This ensures the continuity and accuracy of the scanning process, enhancing the automation level and performance of the entire barcode scanning mechanism.

[0040] Mounting component 5 includes mounting block 51 and movable box 52. Movable box 52 partially surrounds mounting block 51. Movable box 52 slides with X-axis guide rail. Mounting block 51 is fixedly connected to movable box 52. Scanning and reading unit 2 is connected to mounting block 51.

[0041] The sliding of the movable box 52 on the X-axis guide rail 31 drives the mounting block 51 and the barcode scanning unit 2 to move, thereby adjusting the position of the barcode scanning unit 2. The semi-enclosed structure of the movable box 52 provides some protection and fixation for the mounting block 51. This mounting component 5 design facilitates the installation and disassembly of the barcode scanning unit 2, making it convenient for maintenance and replacement. Simultaneously, the structural design of the movable box 52 and the mounting block 51 ensures the stability of the barcode scanning unit 2 during movement, reducing shaking caused by insecure installation, improving the accuracy and reliability of barcode scanning, and is simple in structure, easy to process and manufacture.

[0042] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A PCB board bottom scanning and reading mechanism, characterized in that, Includes mounting plate, fixed bracket, sliding bracket, bracket drive component, drive assembly and barcode scanning unit; A first side is fixedly provided on the mounting plate, and a second side is slidably provided on the mounting plate; a fixed bracket and a sliding bracket are respectively provided on the first side and the second side; a conveying rail is installed on both the fixed bracket and the sliding bracket, and the two conveying rails cooperate to transport the PCB board; the bracket driving component is used to drive the second side to slide toward or away from the first side; a hollow mounting groove is provided on the first side; The drive assembly is installed in the working area between the fixed bracket and the sliding bracket, and the drive assembly is used to drive the barcode scanning and reading unit to move; both the drive assembly and the bracket drive component include a drive unit and a transmission unit, and the drive unit of the drive assembly and the drive unit of the bracket drive component are installed in the hollow mounting slot.

2. The PCB board bottom scanning and reading mechanism according to claim 1, characterized in that, The driving assembly includes an X-axis drive and a Y-axis drive; the X-axis drive is disposed at the movable end of the Y-axis drive, and the X-axis drive is driven by the Y-axis drive to slide under the PCB board; the barcode scanning unit is installed at the movable end of the X-axis drive, and the barcode scanning unit is driven by the X-axis drive to slide under the PCB board.

3. The PCB board bottom scanning and reading mechanism according to claim 2, characterized in that, The X-axis drive component includes an X-axis guide rail and an X-axis transmission screw. The X-axis guide rail is mounted on a mounting plate, and the X-axis transmission screw is rotatably connected to the X-axis guide rail and is driven to rotate by a motor. The mounting component is slidably connected to the X-axis guide rail, and the X-axis transmission screw passes through the mounting component and is threadedly engaged with the mounting component.

4. A PCB board bottom scanning and reading mechanism according to claim 3, characterized in that, The Y-axis drive component includes a Y-axis slide rail and a Y-axis transmission screw. The Y-axis slide rail is mounted on the mounting plate perpendicular to the X-axis guide rail, and two Y-axis slide rails are symmetrically arranged along the axial direction of the mounting plate. A sliding part is provided on the side wall of the X-axis guide rail, and the sliding part is slidably engaged with the Y-axis slide rail. The Y-axis transmission screw is rotatably connected to the mounting plate parallel to the Y-axis slide rail, passes through the X-axis guide rail, and is threadedly engaged with the X-axis guide rail. The Y-axis transmission screw is driven to rotate by a motor.

5. A PCB board bottom scanning and reading mechanism according to claim 4, characterized in that, The mounting plate is equipped with a stabilizing component to enhance the stability of the drive component. The stabilizing component includes an X-axis auxiliary chain and a Y-axis auxiliary chain, which are respectively arranged parallel to the X-axis guide rail and the Y-axis slide rail. A stabilizing connection part is provided on the side wall of the X-axis guide rail, and the end of the X-axis auxiliary chain is connected to the stabilizing connection part. The end of the Y-axis slide rail is connected to the side wall of the X-axis guide rail.

6. The PCB board bottom scanning and reading mechanism according to claim 1, characterized in that, The support drive component includes a stabilizing slide rail, which is mounted on the mounting plate and parallel to the movement direction of the X-axis drive component. A movable part is provided on the side of the sliding support corresponding to the stabilizing slide rail, and the movable part slides in cooperation with the stabilizing slide rail. A stabilizing transmission screw is rotatably connected to the mounting plate, passing through the sliding support and threadedly engaging with it. The stabilizing transmission screw is driven to rotate by a motor. A mounting position is provided at the end of the fixed support, the mounting position having an L-shaped cross-section. The conveying track is bolted to the mounting position.

7. A PCB board bottom scanning and reading mechanism according to claim 3, characterized in that, The mounting component includes a mounting block and a movable box. The movable box partially surrounds the mounting block and slides with the X-axis guide rail. The mounting block is fixedly connected to the movable box, and the barcode scanning unit is connected to the mounting block.

8. A PCB board bottom scanning and reading mechanism according to claim 1, characterized in that, The side wall of the conveying track is provided with a PCB board moving assembly, which includes a conveyor belt, a drive wheel, and a driven wheel. The drive wheel and the driven wheel are rotatably connected to the side wall of the conveying track. The conveyor belt is wound around the drive wheel and the driven wheel. There are multiple driven wheels. The conveyor belt on the multiple driven wheels is pulled parallel to the length direction of the conveying track. A tensioning wheel is provided on the side wall of the conveying track, and the conveyor belt is wound around the circumference of the tensioning wheel.

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