A display screen PCB component appearance inspection device

Abstract

This utility model discloses a device for visually inspecting components on a display PCB, comprising: a support frame, a flipping mechanism, and a transmission mechanism. A support plate is fixedly connected to the top of the support frame, and a first conveyor belt and a second conveyor belt are symmetrically mounted on the top of the support plate. Both the first and second conveyor belts are slidably connected to the top of the support plate. A first detection mechanism is mounted on the first conveyor belt, and a second detection mechanism is mounted on the second conveyor belt. This utility model uses a hydraulic rod to drive the flipping mechanism in conjunction with the transmission mechanism, quickly switching between double-sided and single-sided inspection modes without the need for additional disassembly or adjustment of components. It adapts to the inspection needs of different PCBs, such as some PCBs requiring only single-sided inspection and others requiring double-sided inspection, demonstrating strong versatility. In double-sided inspection mode, the flipping mechanism automatically completes the flipping and transfer of the PCB without manual intervention, enabling continuous double-sided inspection and reducing the inspection cycle.

Description

Technical Field

[0001] This utility model relates to the field of PCB board inspection, and in particular to a device for visual inspection of components on a display PCB. Background Technology

[0002] In the display manufacturing process, the PCB board, as the core load-bearing component, directly determines the electrical performance and lifespan of the display screen due to the quality of the mounting of its surface components. Component defects (such as missing parts, incorrect parts, misalignment, poor soldering, or damage) can lead to display screen malfunctions such as black screen, screen flickering, and touch malfunction. Therefore, a comprehensive visual inspection after PCB board assembly is an indispensable and crucial step.

[0003] Currently, most traditional PCB component appearance inspection equipment is a fixed single-sided inspection design. For PCBs that require double-sided inspection, manual intervention is required to complete the flipping operation. This process interrupts the continuous production process, increases the labor intensity of manual labor, and extends the inspection cycle of a single PCB, which cannot meet the high-efficiency inspection requirements of large-scale production.

[0004] Therefore, a device for visual inspection of components on a display PCB is proposed to address the above problems. Utility Model Content

[0005] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a device for inspecting the appearance of components on a display PCB. The device uses a hydraulic rod to drive a flipping mechanism and a transmission mechanism to quickly switch between double-sided and single-sided inspection modes without the need for additional disassembly or adjustment of components. It is adaptable to the inspection requirements of different PCBs, such as some PCBs requiring only single-sided inspection and others requiring double-sided inspection. It has strong versatility. In double-sided inspection mode, the flipping mechanism automatically flips and transfers the PCB without manual intervention, enabling continuous double-sided inspection and reducing the inspection cycle.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a device for inspecting the appearance of components on a display PCB. The device includes: a support frame, a flipping mechanism, and a transmission mechanism. A support plate is fixedly connected to the top of the support frame. A first conveyor belt and a second conveyor belt are symmetrically mounted on the top of the support plate. Both the first and second conveyor belts are slidably connected to the top of the support plate. A first detection mechanism is mounted on the first conveyor belt, and a second detection mechanism is mounted on the second conveyor belt. The flipping mechanism is located between the first and second conveyor belts. The transmission mechanism is located below the flipping mechanism. The transmission mechanism includes a lifting plate. Linkage rods are rotatably connected to both sides of the lifting plate. A pair of linkage rods are rotatably connected to the bottom of the first and second conveyor belts, respectively. A reset component is also installed at the bottom of the lifting plate. A power source for driving the vertical movement of the flipping mechanism is also installed on the support frame.

[0007] Preferably, the flipping mechanism includes a rotating drum and a mounting frame. The rotating drum is rotatably mounted to the inner wall of the mounting frame. A motor is mounted on the side wall of the mounting frame. The output end of the motor is keyed to the rotating drum. The outer side wall of the rotating drum has multiple evenly distributed material clamping grooves.

[0008] Preferably, a buffer pad is provided on the inner side wall of the material slot.

[0009] Preferably, the top of the support plate has a reserved hole to provide space for the vertical displacement of the flipping mechanism.

[0010] Preferably, the power source includes a hydraulic rod, which is mounted on a support frame, and the output end of the hydraulic rod is keyed to the mounting frame.

[0011] Preferably, both the first and second conveyor belts are fixedly connected to sliders at their bottoms, the support plate has a pair of symmetrically distributed grooves at its top, the sliders are slidably connected to the grooves, and the end of the connecting rod away from the lifting plate is rotatably connected to the bottom of the slider.

[0012] Preferably, the reset component includes a telescopic rod and a spring, the spring being sleeved on the outer wall of the telescopic rod, both the telescopic rod and the spring being fixed on the support frame, and the top ends of both the telescopic rod and the spring being fixedly connected to the bottom of the lifting plate.

[0013] The beneficial effects of this utility model are:

[0014] The hydraulic rod drives the flipping mechanism in conjunction with the transmission mechanism to quickly switch between double-sided and single-sided inspection modes without the need for additional disassembly or adjustment of components. This adapts to the inspection requirements of different PCB boards, such as some PCB boards that only require single-sided inspection and others that require double-sided inspection. It is highly versatile. In double-sided inspection mode, the flipping mechanism automatically flips and transfers the PCB board without manual intervention, enabling continuous double-sided inspection and reducing the inspection cycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0017] Figure 3 This is a partial structural schematic diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the flipping mechanism of this utility model.

[0019] In the diagram: 1. Support frame; 2. Support plate; 3. First conveyor belt; 4. First detection mechanism; 5. Second conveyor belt; 6. Second detection mechanism; 7. Turning mechanism; 71. Rotary drum; 72. Mounting frame; 73. Motor; 74. Material clamping groove; 8. Transmission mechanism; 81. Lifting plate; 82. Telescopic rod; 83. Spring; 84. Connecting rod; 9. Hydraulic rod; 10. Slide groove; 11. Sliding block. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] See appendix Figures 1 to 4 As shown, a component appearance inspection device for a display PCB includes: a support frame 1, a flipping mechanism 7, and a transmission mechanism 8. A support plate 2 is fixedly connected to the top of the support frame 1. A first conveyor belt 3 and a second conveyor belt 5 are symmetrically mounted on the top of the support plate 2. Both the first conveyor belt 3 and the second conveyor belt 5 are slidably connected to the top of the support plate 2. A first detection mechanism 4 is mounted on the first conveyor belt 3, and a second detection mechanism 6 is mounted on the second conveyor belt 5. The flipping mechanism 7 is located between the first conveyor belt 3 and the second conveyor belt 5. The transmission mechanism 8 is located below the flipping mechanism 7. The transmission mechanism 8 includes a lifting plate 81. Connecting rods 84 are rotatably connected to both sides of the lifting plate 81. A pair of connecting rods 84 are rotatably connected to the bottom of the first conveyor belt 3 and the second conveyor belt 5, respectively. A reset component is also installed at the bottom of the lifting plate 81. The support frame 1 is also equipped with a power source for driving the vertical movement of the flipping mechanism 7.

[0022] In this embodiment, the operator places the PCB board to be inspected at the input end of the first conveyor belt 3. The first conveyor belt 3 starts to transport the PCB board. When the PCB board passes under the first detection mechanism 4, the mechanism performs high-resolution image acquisition on the components on the front of the PCB board. The image processing software analyzes whether there are appearance defects such as missing parts, wrong parts, misalignment, poor soldering, and damage. Then the first conveyor belt 3 transports the PCB board to the flipping mechanism 7. The flipping mechanism 7 flips the PCB board 180° and the PCB board falls smoothly into the second conveyor belt 5 under the action of gravity. The second conveyor belt 5 transports the PCB board. When the PCB board passes the second detection mechanism 6, the mechanism completes the appearance defect detection of the components on the back. After the detection is completed, the PCB board is transported to the output end of the equipment and collected by the subsequent sorting mechanism or manually.

[0023] When only one side of the PCB needs to be inspected, the power source is activated, driving the flipping mechanism 7 to move vertically downwards. After moving down a certain distance, the flipping mechanism 7 abuts against the lifting plate 81 of the transmission mechanism 8, pushing the lifting plate 81 to compress the reset component. The connecting rods 84 on both sides of the lifting plate 81 simultaneously pull the first conveyor belt 3 and the second conveyor belt 5 until the end faces of the two conveyor belts are connected, forming a continuous conveying path. The flipping mechanism 7 moves down precisely below the conveyor belts to avoid interfering with the PCB conveying. The PCB to be inspected is placed from the input end of the first conveyor belt 3 and conveyed through the connected continuous conveyor belts, and then inspected by the first... The first inspection mechanism 4 or the second inspection mechanism 6 completes the single-sided defect inspection. Finally, the PCB board is transported to the output end of the equipment. The equipment can quickly switch between "double-sided inspection" and "single-sided inspection" modes by driving the flipping mechanism 7 and the transmission mechanism 8 through the hydraulic rod 9. No additional disassembly or adjustment of components is required. It is suitable for the inspection needs of different PCB boards, such as some PCB boards that only require single-sided inspection and some that require double-sided inspection. It has strong versatility. In the double-sided inspection mode, the flipping mechanism 7 automatically completes the flipping and transfer of the PCB board without manual intervention, realizing continuous double-sided inspection and reducing the inspection cycle.

[0024] It should be noted that the first testing agency 4 or the second testing agency 6 can be an industrial camera.

[0025] See appendix Figure 4 As shown, the flipping mechanism 7 includes a rotating drum 71 and a mounting frame 72. The rotating drum 71 is rotatably mounted to the inner wall of the mounting frame 72. A motor 73 is mounted on the side wall of the mounting frame 72. The output end of the motor 73 is keyed to the rotating drum 71. Multiple evenly distributed material slots 74 are opened on the outer side wall of the rotating drum 71.

[0026] In this embodiment, the first conveyor belt 3 transports the PCB board to the flipping mechanism 7. The PCB board is embedded in the material slot 74 of the rotating drum 71. The motor 73 starts and drives the rotating drum 71 to rotate 180°. The PCB board flips with the material slot 74 until the back side is facing up. After the flipping is completed, the PCB board falls smoothly into the second conveyor belt 5 under the action of gravity.

[0027] See appendix Figure 4 As shown, a buffer pad is provided on the inner wall of the material chute 74.

[0028] In this embodiment, the buffer prevents the PCB board from making hard contact with the material slot 74, thus preventing scratches on components or damage to the PCB board.

[0029] See appendix Figures 2 to 3 As shown, the top of the support plate 2 has a reserved hole to provide space for the vertical displacement of the flipping mechanism 7.

[0030] See appendix Figure 3 As shown, the power source includes a hydraulic rod 9, which is mounted on the support frame 1, and the output end of the hydraulic rod 9 is connected to the mounting frame 72 by a key.

[0031] In this embodiment, the hydraulic rod 9 provides vertical motion power to the flipping mechanism 7, thereby enabling the flipping mechanism to rise and fall.

[0032] See appendix Figures 2 to 3 As shown, the bottom of the first conveyor belt 3 and the second conveyor belt 5 are both fixedly connected to sliders 11. The top of the support plate 2 is provided with a pair of symmetrically distributed grooves 10. The sliders 11 are slidably connected to the grooves 10. The end of the connecting rod 84 away from the lifting plate 81 is rotatably connected to the bottom of the sliders 11.

[0033] In this embodiment, the chute 10 provides a sliding track for the slider 11, and the slider 11 cooperates with the chute 10 to limit the sliding direction of the conveyor belt.

[0034] See appendix Figure 3 As shown, the reset component includes a telescopic rod 82 and a spring 83. The spring 83 is sleeved on the outer wall of the telescopic rod 82. Both the telescopic rod 82 and the spring 83 are fixed on the support frame 1, and the top ends of the telescopic rod 82 and the spring 83 are fixedly connected to the bottom of the lifting plate 81.

[0035] In this embodiment, spring 83 provides a stable restoring force to ensure that the first conveyor belt 3 and the second conveyor belt 5 can automatically separate after the flipping mechanism 7 rises;

[0036] Specifically, when switching to the double-sided detection mode, the hydraulic rod 9 drives the flipping mechanism 7 to reset upwards, the lifting plate 81 returns to its initial position under the elastic force of the spring 83, the connecting rod 84 pulls the first conveyor belt 3 and the second conveyor belt 5 to slide in opposite directions until they move to the initial distance of the double-sided detection mode, and finally the flipping mechanism 7 moves to the middle position of the first conveyor belt 3 and the second conveyor belt 5.

[0037] Working principle:

[0038] The operator places the PCB board to be inspected at the input end of the first conveyor belt 3. The first conveyor belt 3 starts transporting the PCB board. When the PCB board passes under the first inspection mechanism 4, the mechanism performs high-resolution image acquisition on the components on the front of the PCB board. The image processing software analyzes whether there are appearance defects such as missing parts, wrong parts, misalignment, poor soldering, and damage. Then, the first conveyor belt 3 transports the PCB board to the flipping mechanism 7. The flipping mechanism 7 flips the PCB board 180°, and the PCB board falls smoothly into the second conveyor belt 5 under the action of gravity. The second conveyor belt 5 transports the PCB board. When the PCB board passes the second inspection mechanism 6, the mechanism completes the appearance defect detection of the components on the back. After the detection is completed, the PCB board is transported to the output end of the equipment for subsequent sorting by the sorting mechanism. Alternatively, it can be collected manually. When only one side of the PCB needs to be inspected, the power source is activated, driving the flipping mechanism 7 to move vertically downwards. After the flipping mechanism 7 moves down a certain distance, it abuts against the lifting plate 81 of the transmission mechanism 8, pushing the lifting plate 81 to compress the reset component. The connecting rods 84 on both sides of the lifting plate 81 simultaneously pull the first conveyor belt 3 and the second conveyor belt 5 until the end faces of the two conveyor belts are connected, forming a continuous conveying path. The flipping mechanism 7 moves down just below the conveyor belt to avoid interfering with the PCB conveying. The PCB to be inspected is put in from the input end of the first conveyor belt 3 and conveyed by the connected continuous conveyor belt. The first inspection mechanism 4 or the second inspection mechanism 6 completes the single-sided defect inspection. Finally, the PCB is conveyed to the output end of the equipment. It is adaptable to the inspection needs of different PCBs and has strong versatility.

[0039] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A display screen PCB component appearance inspection apparatus, characterized by: include: A support frame (1) is fixedly connected to a support plate (2) on its top. A first conveyor belt (3) and a second conveyor belt (5) are symmetrically installed on the top of the support plate (2). The first conveyor belt (3) and the second conveyor belt (5) are slidably connected to the top of the support plate (2). A first detection mechanism (4) is installed on the first conveyor belt (3), and a second detection mechanism (6) is installed on the second conveyor belt (5). A flipping mechanism (7) is located between the first conveyor belt (3) and the second conveyor belt (5); The transmission mechanism (8) is located below the flipping mechanism (7). The transmission mechanism (8) includes a lifting plate (81). Both sides of the lifting plate (81) are rotatably connected to connecting rods (84). A pair of connecting rods (84) are rotatably connected to the bottom of the first conveyor belt (3) and the second conveyor belt (5) respectively. A reset component is also installed at the bottom of the lifting plate (81). The support frame (1) is also equipped with a power source for driving the vertical movement of the flipping mechanism (7).

2. The display screen PCB component appearance inspection apparatus according to claim 1, characterized by: The flipping mechanism (7) includes a rotating drum (71) and a mounting frame (72). The rotating drum (71) is rotatably mounted to the inner wall of the mounting frame (72). A motor (73) is mounted on the side wall of the mounting frame (72). The output end of the motor (73) is keyed to the rotating drum (71). Multiple evenly distributed material slots (74) are provided on the outer side wall of the rotating drum (71).

3. The display screen PCB component appearance inspection apparatus of claim 2, wherein: The inner wall of the material slot (74) is provided with a buffer pad.

4. The display screen PCB component appearance inspection apparatus of claim 1, wherein: The top of the support plate (2) has a reserved hole to provide space for the vertical displacement of the flipping mechanism (7).

5. The display screen PCB component appearance inspection apparatus of claim 1, wherein: The power source includes a hydraulic rod (9), which is mounted on a support frame (1), and the output end of the hydraulic rod (9) is keyed to the mounting frame (72).

6. The display screen PCB component appearance inspection apparatus of claim 1, wherein: The bottom of the first conveyor belt (3) and the second conveyor belt (5) are both fixedly connected to sliders (11). The top of the support plate (2) is provided with a pair of symmetrically distributed grooves (10). The sliders (11) are slidably connected to the grooves (10). The end of the connecting rod (84) away from the lifting plate (81) is rotatably connected to the bottom of the slider (11).

7. The display screen PCB component appearance inspection apparatus of claim 1, wherein: The reset component includes a telescopic rod (82) and a spring (83). The spring (83) is sleeved on the outer wall of the telescopic rod (82). The telescopic rod (82) and the spring (83) are both fixed on the support frame (1), and the top ends of the telescopic rod (82) and the spring (83) are fixedly connected to the bottom of the lifting plate (81).

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