Visual inspection device for defects of PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB (Printed Circuit Board) defect visual detection device, and relates to the technical field of PCB detection. The visual inspection device comprises a visual inspection device, and further comprises a moving part arranged at the bottom of the visual inspection device; the configuration part is arranged on the moving part; the moving part comprises a moving assembly; the moving assembly is mounted at the bottom of the visual inspection device; and the driving assembly is mounted on the moving assembly. Through the arrangement of the moving part, the problems that the whole device is inconvenient to move, and when the requirements for position change such as transfer to a new working area for production scene adjustment, equipment maintenance or storage and storage are met, operators are difficult to directly carry and move, and the moving operation can be completed only by means of additional tools such as a forklift and a hydraulic cart are solved; therefore, not only is the operation complexity increased, but also extra time and labor cost are consumed due to tool scheduling.

Description

Technical Field

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

[0002] The related technology discloses a visual inspection device for PCB board appearance defects, with announcement number CN222579975U. The PCB board placed on the rotating disk in the inspection table can be cleaned by low-angle blowing of multiple sets of air nozzles at the lower end of the dust suction hood and suction of the dust suction pipe at the top. Combined with the rotating disk that slowly rotates the PCB board, the device can efficiently clean the PCB board of adhesive and residual debris and dust, thereby avoiding the problem of errors in subsequent visual detector detection caused by debris residue.

[0003] However, during use, it is inconvenient to move the entire device. When faced with changes in production environment, such as needing to move to a new work area, equipment maintenance, or storage, operators cannot move it directly. They must use forklifts, hydraulic trolleys, or other tools to complete the relocation. This not only increases the complexity of operation but also incurs additional time and labor costs due to tool scheduling. Utility Model Content

[0004] The purpose of this utility model is to provide a PCB board defect visual inspection device. By setting up a movable part, it solves the problem of inconvenience in moving the entire device. When facing changes in production scene that require relocation to a new work area, equipment maintenance, or warehousing, it is difficult for operators to move the device directly. They must use tools such as forklifts and hydraulic trolleys to complete the relocation operation. This not only increases the complexity of operation, but also consumes additional time and labor costs due to tool scheduling.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a visual inspection device for PCB board defects, comprising a visual inspection device and further comprising: a movable part disposed at the bottom of the visual inspection device; a configuration part disposed on the movable part; the movable part comprising a movable component mounted on the bottom of the visual inspection device; and a driving component mounted on the movable component; the movable component comprising a storage groove formed at the bottom of the visual inspection device, wherein two fixed frames are fixedly connected to the top inner wall of the storage groove, and folding plates are hinged to both fixed frames, and U-shaped frames are fixedly connected to the top of both folding plates. Each of the U-shaped frames is hinged with a connecting rod. A bidirectional screw is rotatably connected inside the storage slot. The bidirectional screw passes through two fixed frames and is rotatably connected to the two fixed frames. Two sliding frames are threaded to the outer wall of the bidirectional screw. The ends of the two connecting rods away from the U-shaped frame are hinged to the two sliding frames. A balancing component is provided inside the storage slot. The right end of the bidirectional screw extends to the outside of the visual inspection device and is rotatably connected to the visual inspection device. The balancing component includes two limiting slide rods fixedly connected inside the storage slot. Both limiting slide rods pass through the two fixed frames and the two sliding frames, and both limiting slide rods are slidably connected to the two sliding frames.

[0007] Furthermore, the configuration unit includes a buffer assembly, two buffer assemblies are provided, and both buffer assemblies are located at the bottom of the two folding plates; and a reinforcement assembly is mounted on the sliding frame.

[0008] Furthermore, the drive assembly includes a motor sleeve fixedly connected to the vision inspection device, on which a motor is mounted, and the output shaft of the motor is fixedly connected to a bidirectional screw via a coupling. The motor is located on the right side of the vision inspection device.

[0009] Furthermore, the buffer assembly includes a buffer plate one fixedly connected to the bottom of the folding plate, a buffer plate two disposed at the bottom of the buffer plate one, a plurality of casters rotatably connected to the bottom of the buffer plate two, a plurality of dampers fixedly connected to the top of the buffer plate two, the top ends of the plurality of dampers being fixedly connected to the buffer plate one, and a reset member disposed on the outer wall of the plurality of dampers. Four casters are provided, and the reset member includes springs respectively wound around the outer wall of the plurality of dampers. One end of the plurality of springs is fixedly connected to the buffer plate one, and the other end of the plurality of springs is fixedly connected to the buffer plate two. Four dampers and four springs are provided.

[0010] Furthermore, the reinforcement component includes a groove formed on the back of the visual inspection device, and a limiting screw is fixedly connected to the back of both sliding frames. The rear ends of both limiting screws extend out of the groove and are slidably connected to the groove. The outer walls of both limiting screws are threaded with limiting nuts, and the front sides of both limiting nuts are in contact with the visual inspection device.

[0011] This utility model has the following beneficial effects:

[0012] 1. By setting up a movable part, when the vision inspection device needs to be moved, the motor is started. The motor, through a two-way screw and a limiting slide rod, drives the two sliding frames to move closer to each other. Since the other end of the connecting rod hinged on the sliding frame is hinged to the folding plate on the fixed frame, the movement of the sliding frame is transmitted through the connecting rod, causing the folding plate to drive the casters closer to the ground. The vision inspection device can then move with the help of the casters. This setting enables the device to move flexibly without the need for external handling tools, improving the convenience of position adjustment, maintenance and storage.

[0013] 2. By setting the configuration section, when the two folding plates drive the casters to unfold and need reinforcement, use a tool to tighten the limit nut on the outer wall of the upper limit screw of the sliding frame to prevent the sliding frame from moving accidentally and causing the folding plates to drive the casters to retract into the storage slot. This setting can stabilize the casters after they are unfolded and ensure that the casters remain supported when the device is moved or stationary, avoiding structural loosening that could affect the stability of use.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the visual inspection device of this utility model.

[0018] Figure 3 This is a schematic diagram of the overall structure of the movable part of this utility model;

[0019] Figure 4 This is a partial cross-sectional view of the configuration part of this utility model;

[0020] Figure 5 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0021] Figure 6 This utility model Figure 4 A magnified structural diagram of B in the diagram.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Vision inspection device; 2. Moving part; 21. Moving assembly; 211. Storage slot; 212. Fixing frame; 213. Folding plate; 214. U-shaped frame; 215. Connecting rod; 216. Bidirectional screw; 217. Sliding frame; 218. Limiting slide bar; 22. Drive assembly; 221. Motor sleeve; 222. Motor; 3. Configuration part; 31. Buffer assembly; 311. Buffer plate one; 312. Buffer plate two; 313. Caster wheel; 314. Damper; 315. Spring; 32. Reinforcing assembly; 321. Slide groove; 322. Limiting screw; 323. Limiting nut. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-6 As shown, this utility model is a PCB board defect visual inspection device, including a visual inspection device 1, and further including: a moving part 2, which is disposed at the bottom of the visual inspection device 1; and a configuration part 3, which is disposed on the moving part 2.

[0026] The moving part 2 includes a moving component 21, which is mounted on the bottom of the vision inspection device 1; and a driving component 22, which is mounted on the moving component 21. The moving component 21 includes a storage slot 211 formed at the bottom of the vision inspection device 1. Two fixed frames 212 are fixedly connected to the top inner wall of the storage slot 211. Folding plates 213 are hinged to both fixed frames 212. U-shaped frames 214 are fixedly connected to the top of both folding plates 213. Connecting rods 215 are hinged to both U-shaped frames 214. A bidirectional screw 216 is rotatably connected inside the storage slot 211. The bidirectional screw 216 passes through the two fixed frames 212 and is rotatably connected to the two fixed frames 212. The outer wall of the bidirectional screw 216 is threaded with two sliding frames 217. The ends of the two connecting rods 215 away from the U-shaped frame 214 are hinged to the two sliding frames 217. A balancing component is provided in the storage groove 211. The right end of the bidirectional screw 216 extends to the outside of the vision inspection device 1 and is rotatably connected to the vision inspection device 1. The drive assembly 22 includes a motor sleeve 221 fixedly connected to the vision inspection device 1. A motor 222 is fitted on the motor sleeve 221. The output shaft of the motor 222 is fixedly connected to the bidirectional screw 216 through a coupling. The motor 222 is located on the right side of the vision inspection device 1. The balancing component includes two limiting slide rods 218 fixedly connected in the storage groove 211. The sliding rods 218 all pass through the two fixed frames 212 and the two sliding frames 217. The two limiting sliding rods 218 are slidably connected to the two sliding frames 217. By setting the moving part 2, when it is necessary to inspect the PCB board, it can be placed on the vision inspection device 1. Relying on machine vision and deep learning technology, the vision inspection device 1 will automatically identify and accurately inspect key indicators such as appearance defects and circuit connectivity of the PCB board. When it is necessary to move the vision inspection device 1, the motor 222 can be started. The motor 222 will move the two sliding frames 217 closer to each other through the bidirectional screw 216 and in conjunction with the two limiting sliding rods 218. Connecting rods 215 are hinged to the two sliding frames 217 respectively, and the other ends of the two connecting rods 215 are respectively hinged to the folding plates 213 rotating on the two fixed frames 212. Therefore, when the motor 222 drives the two sliding frames 217 to move relative to each other through the bidirectional screw 216, the folding plates 213 rotating in the two fixed frames 212 can be driven by the transmission of the two connecting rods 215 to move the multiple casters 313 on them closer to the ground. This allows the vision inspection device 1 to move by means of the multiple casters 313 at the bottom. With this setting, the vision inspection device can be moved flexibly without relying on external handling tools, which greatly improves the convenience of operation when adjusting the position, maintaining and storing it.

[0027] Configuration unit 3 includes a buffer assembly 31, of which two buffer assemblies 31 are provided, each located at the bottom of two folding plates 213; and a reinforcement assembly 32, which is mounted on the sliding frame 217. The buffer assembly 31 includes a first buffer plate 311 fixedly connected to the bottom of the folding plate 213, a second buffer plate 312 located at the bottom of the first buffer plate 311, a plurality of casters 313 rotatably connected to the bottom of the second buffer plate 312, and a fixed connection to the top of the second buffer plate 312. Several dampers 314 are provided, the tops of which are fixedly connected to the buffer plate 311. Each damper 314 has a reset component on its outer wall. Four casters 313 are provided. The reinforcement assembly 32 includes a groove 321 formed on the back of the vision inspection device 1. Limiting screws 322 are fixedly connected to the back of both sliding frames 217. The rear ends of both limiting screws 322 extend outside the groove 321 and are slidably connected to it. The outer walls of both dampers are threaded with limit nuts 323. The front sides of both limit nuts 323 are in contact with the vision inspection device 1. The reset component includes springs 315 respectively wound around the outer walls of several dampers 314. One end of each spring 315 is fixedly connected to the first buffer plate 311, and the other end of each spring 315 is fixedly connected to the second buffer plate 312. There are four dampers 314 and four springs 315. By setting the configuration part 3, when the two folding plates 213 drive the upper part of the damper 314, the damper 314 and the spring 315 are respectively driven by the damper 314. After the caster wheel 313 is unfolded, if it needs to be reinforced, a tool can be used to tighten the limiting nuts 323 on the outer wall of the limiting screws 322 on the two sliding frames 217 to prevent the sliding frame 217 from moving accidentally, causing the folding plate 213 connected to it to retract the caster wheel 313 into the storage groove 211. This setting can stably limit the unfolded caster wheel, ensuring that the caster wheel remains supported during the movement of the device or when it is stationary, and avoiding the impact of structural loosening on the stability of use.

[0028] Yucheng PCB Defect Visual Inspection Device 1: This is an automated quality inspection device designed for the precision electronics manufacturing industry. It integrates a high-resolution industrial camera, a multi-dimensional LED intelligent lighting system, and embedded AI algorithms to achieve accurate defect identification and classification throughout the entire PCB production process. The device employs a fixed workpiece and a moving bridge structure with four-axis CNC closed-loop control, coupled with imported linear grating rulers and high-precision ball screws to ensure micron-level inspection accuracy. It can accurately capture common defects such as short circuits, exposed copper, solder pad oil stains, surface scratches, and blurred characters. It can identify minute defects as small as 0.01mm. Its intelligent inspection software supports rapid comparison with standard templates, automatically completing dimensional measurements, component counting, and solder joint integrity verification. Real-time traceability of inspection data is achieved through the MES system. It also features double-sided inspection, enabling inspection of PCBs up to 550×650mm in size and as thin as 40μm without flipping, with an inspection speed of up to 10 pieces / minute. It is widely adaptable to the batch inspection needs of various products such as high-density circuit boards and flexible PCBs, effectively replacing manual inspection to reduce the missed inspection rate and helping companies reduce quality control costs.

[0029] It should be noted that the control of the vision inspection device 1 and the motor 222 in this application can both be achieved by using the program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be achieved using existing technologies, such as PLC.

[0030] A specific application of this embodiment is as follows: When using the device, if a PCB board needs to be inspected, it can be placed on the vision inspection device 1. Relying on machine vision and deep learning technology, the vision inspection device 1 will automatically identify and accurately inspect key indicators such as appearance defects and circuit connectivity of the PCB board. If the vision inspection device 1 needs to be moved, the motor 222 can be started. The motor 222 will move the two sliding frames 217 closer to each other via the bidirectional screw 216 and two limiting slide rods 218. Since the two sliding frames 217 are respectively hinged... The device is equipped with connecting rods 215, and the other ends of the two connecting rods 215 are respectively hinged to folding plates 213 rotating on the two fixed frames 212. Therefore, when the motor 222 drives the two sliding frames 217 to move relative to each other through the bidirectional screw 216, the transmission of the two connecting rods 215 can cause the rotating folding plates 213 in the two fixed frames 212 to drive the multiple casters 313 on them to move closer to the ground. This allows the vision inspection device 1 to move using the multiple casters 313 at the bottom. Through this setting, the vision inspection device can achieve flexibility. The device is easily movable, eliminating the need for external handling tools and significantly improving the convenience of position adjustment, maintenance, and storage. When the two folding plates 213 unfold, driving their casters 313, reinforcement can be achieved by tightening the limiting nuts 323 on the outer walls of the limiting screws 322 on the two sliding frames 217. This prevents accidental movement of the sliding frames 217, which would otherwise cause the connected folding plates 213 to retract their casters 313 into the storage slot 211. This design securely limits the unfolded casters, ensuring proper movement of the device. During operation or when stationary, the casters maintain a supported state to prevent structural loosening from affecting operational stability. When the device is moved using multiple casters 313, the multiple dampers 314 and springs 315 arranged between the buffer plate 311 and buffer plate 312 on the casters 313 work together to effectively reduce vibration interference generated during movement. This buffer structure can reliably protect the precision components inside the vision inspection device, preventing vibration during handling from affecting its detection accuracy, thereby ensuring the stability of the device operation and the accuracy of the detection results.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A PCB board defect visual inspection device, comprising a visual inspection device (1), characterized in that, Also includes: A movable part (2) is provided at the bottom of the visual inspection device (1); Configuration unit (3), the configuration unit (3) is disposed on the moving unit (2); The moving part (2) includes a moving component (21) which is mounted on the bottom of the visual inspection device (1); as well as A drive component (22) is mounted on a moving component (21); The moving component (21) includes a storage slot (211) at the bottom of the visual inspection device (1). Two fixed frames (212) are fixedly connected to the top inner wall of the storage slot (211). Folding plates (213) are hinged to the two fixed frames (212). U-shaped frames (214) are fixedly connected to the top of the two folding plates (213). Connecting rods (215) are hinged to the two U-shaped frames (214). A bidirectional screw (216) is rotatably connected inside the storage slot (211). The bidirectional screw (216) passes through the two fixed frames (212) and is rotatably connected to the two fixed frames (212). Two sliding frames (217) are threaded to the outer wall of the bidirectional screw (216). The ends of the two connecting rods (215) away from the U-shaped frames (214) are hinged to the two sliding frames (217). A balancing component is provided inside the storage slot (211). The right end of the bidirectional screw (216) extends to the outside of the visual inspection device (1) and is rotatably connected to the visual inspection device (1).

2. The PCB board defect visual inspection device according to claim 1, characterized in that, The configuration unit (3) includes a buffer assembly (31), two buffer assemblies (31) are provided, and both buffer assemblies (31) are provided at the bottom of the two folding plates (213); A reinforcement component (32) is mounted on a sliding frame (217).

3. The PCB board defect visual inspection device according to claim 2, characterized in that, The drive assembly (22) includes a motor sleeve (221) fixedly connected to the vision inspection device (1), a motor (222) is fitted on the motor sleeve (221), and the output shaft of the motor (222) is fixedly connected to the bidirectional screw (216) through a coupling; The motor (222) is located on the right side of the vision inspection device (1).

4. The PCB board defect visual inspection device according to claim 3, characterized in that, The buffer assembly (31) includes a buffer plate one (311) fixedly connected to the bottom of the folding plate (213), a buffer plate two (312) is provided at the bottom of the buffer plate one (311), a plurality of casters (313) are rotatably connected to the bottom of the buffer plate two (312), a plurality of dampers (314) are fixedly connected to the top of the buffer plate two (312), the top of the plurality of dampers (314) is fixedly connected to the buffer plate one (311), and a reset member is provided on the outer wall of the plurality of dampers (314). Among them, four omnidirectional wheels (313) are provided.

5. The PCB board defect visual inspection device according to claim 4, characterized in that, The reinforcement component (32) includes a groove (321) on the back of the visual inspection device (1), and a limiting screw (322) is fixedly connected to the back of both sliding frames (217). The rear ends of both limiting screws (322) extend out of the groove (321) and are slidably connected to the groove (321). The outer walls of both limiting screws (322) are threaded with limiting nuts (323). The front sides of both limiting nuts (323) are in contact with the visual inspection device (1).

6. The PCB board defect visual inspection device according to claim 5, characterized in that, The balancing component includes two limiting slide rods (218) fixedly connected in the storage groove (211), and both limiting slide rods (218) pass through the two fixed frames (212) and the two sliding frames (217). Both limiting slide bars (218) are slidably connected to the two sliding frames (217).

7. The PCB board defect visual inspection device according to claim 6, characterized in that, The reset component includes springs (315) respectively wound around the outer wall of a plurality of dampers (314), one end of each of the plurality of springs (315) is fixedly connected to buffer plate one (311), and the other end of each of the plurality of springs (315) is fixedly connected to buffer plate two (312). Four dampers (314) and four springs (315) are provided.

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