Optical module PCB laser marking and detection equipment

Abstract

The utility model discloses a kind of light module PCB laser coding and detection equipment, relating to PCB technical field, including rack, conveying device, laser coding device and visual detection device.Rack is provided with coding station and detection station, detection station is located at the front of coding station;Conveying device is located on rack, conveying device is used to convey PCB from back to front, to make PCB move to coding station and detection station in turn;Laser coding device is used to carry out laser coding to the PCB at coding station, to process bar code on PCB surface;Visual detection device is located on rack, visual detection device is used to detect bar code on the PCB at detection station.The light module PCB laser coding and detection equipment saves the transfer step of PCB, greatly shortens the production cycle of PCB from coding to qualified circulation, so it is beneficial to the efficient production of PCB.

Description

Technical Field

[0001] This utility model relates to the field of PCB technology, and in particular to a laser marking and inspection device for optical module PCBs. Background Technology

[0002] Printed Circuit Boards (PCBs), as the core carriers of electronic devices, are key components for achieving electrical connections between electronic components. Optical module PCBs are specifically designed for optical modules and are crucial for photoelectric conversion and data transmission. During the production of optical module PCBs, after solder mask processing, a laser marking machine is typically used to create barcodes, such as QR codes or barcodes, on the PCB surface. These barcodes carry key information such as the PCB model, production batch, and traceability code, facilitating information verification, product traceability, and quality control in subsequent production stages. However, due to factors such as laser parameter deviations, the finished barcodes are prone to problems like blurry patterns, incomplete designs, and insufficient contrast. If not detected in time, this can lead to unrecognizable barcodes and incorrect information readings in subsequent scanning stages, causing production halts. Therefore, it is necessary to inspect the barcodes on the PCB surface. Only PCBs that pass inspection can proceed to the next process. In existing technology, after a batch of PCBs has completed barcode processing on a laser marking machine, operators remove the PCBs and transport them to the testing workshop. Once the PCBs to be tested arrive at the testing workshop, operators use handheld barcode scanners to scan the barcodes on each PCB one by one. On the one hand, the process of removing the PCBs from the laser marking machine and transporting them to the testing workshop not only adds extra processing time but may also cause impurities to accumulate on the barcode area of ​​the PCBs due to handling. Additional cleaning is required before subsequent testing, further consuming time. On the other hand, when manually scanning each PCB one by one, the scanning speed depends on the operator's skill level. During batch testing, fatigue can easily lead to scanning delays and missed scans, causing the manual testing pace to be out of sync with the laser marking machine's processing pace. This often results in a backlog of marked PCBs at the testing stage, creating a production bottleneck and lengthening the overall production cycle from marking to acceptance, which is detrimental to efficient PCB production. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a laser marking and inspection device for optical module PCBs, which is beneficial for the efficient production of PCBs.

[0004] The optical module PCB laser marking and inspection equipment according to an embodiment of the present invention includes a frame with a marking station and an inspection station, the inspection station being located in front of the marking station; a conveying device mounted on the frame, the conveying device being used to convey PCBs from back to front, so that the PCBs move sequentially to the marking station and the inspection station; a laser marking device being used to laser mark the PCBs at the marking station to process barcodes on the PCB surface; and a vision inspection device being mounted on the frame, the vision inspection device being used to inspect the barcodes on the PCBs at the inspection station.

[0005] It has at least the following beneficial effects: When PCBs need to be processed, the operator places the PCB to be processed at the rear end of the conveyor. The conveyor starts and transports the PCB from back to front. After the PCB moves to the marking station, the conveyor stops transporting the PCB. At this time, the laser marking device starts and performs laser marking on the PCB at the marking station to process a barcode on the PCB surface. After the laser marking of the PCB is completed, the conveyor continues to transport the PCB forward. After the PCB moves to the inspection station, the conveyor stops transporting the PCB. Subsequently, the vision inspection device starts and inspects the barcode on the PCB at the inspection station, and finally outputs the inspection result as to whether the PCB barcode is qualified. This optical module PCB laser marking and inspection equipment eliminates the PCB transfer step. The equipment directly connects the marking and inspection stations via a conveyor, reducing additional PCB transfer time and avoiding contamination of the PCB barcode area and subsequent cleaning work caused by handling. Furthermore, it replaces manual handheld barcode scanners with a vision inspection device, ensuring the barcode inspection process is unaffected by operator skill or fatigue. This allows the barcode inspection rhythm to synchronize with the laser marking process, preventing PCBs from accumulating at the inspection stage and creating production bottlenecks. Ultimately, this significantly shortens the production cycle from marking to qualified PCB transfer, thus promoting efficient PCB production.

[0006] The optical module PCB laser marking and inspection equipment according to an embodiment of the present utility model further includes a storage box and a sorting device. The storage box and the sorting device are both mounted on the frame. The sorting device is electrically connected to the vision inspection device. The sorting device is used to send the unqualified PCBs at the inspection station into the storage box.

[0007] According to the optical module PCB laser marking and inspection equipment of this utility model embodiment, the sorting device includes a push cylinder and a push plate. The cylinder body of the push cylinder is disposed on the frame, and the piston rod of the push cylinder is connected to the push plate. The push cylinder can drive the push plate to move toward the storage box so that the push plate pushes the unqualified PCB at the inspection station into the storage box.

[0008] The optical module PCB laser marking and inspection equipment according to an embodiment of the present invention further includes two first limiting plates and two second limiting plates. The two first limiting plates and the two second limiting plates are parallel to the front-back direction. The two first limiting plates are located behind the inspection station, and the area between the two first limiting plates is used for the PCB on the conveying device to move. The two second limiting plates are located in front of the inspection station, and the area between the two second limiting plates is used for the PCB on the conveying device to move.

[0009] According to the optical module PCB laser marking and inspection equipment of this utility model embodiment, the distance between the two first limiting plates can be adjusted, and the distance between the two second limiting plates can be adjusted.

[0010] According to the optical module PCB laser marking and inspection equipment of the present utility model, the visual inspection device includes a first camera and an image detection module. The first camera is electrically connected to the image detection module. Both the first camera and the image detection module are mounted on the frame, and the first camera is positioned above the inspection station.

[0011] According to the optical module PCB laser marking and inspection equipment of this utility model embodiment, the visual inspection device further includes two lamps, both of which are mounted on the frame and respectively located on both sides of the first camera. Both lamps are used to illuminate the PCB at the inspection station.

[0012] According to the optical module PCB laser marking and inspection equipment of this utility model embodiment, the illumination angle of the two lamps can be adjusted.

[0013] According to an embodiment of the optical module PCB laser marking and inspection equipment, the laser marking device includes a support, a two-axis drive mechanism, a second camera, an image recognition module, and a laser. The two-axis drive mechanism is mounted on the support and is electrically connected to the image recognition module. The output end of the two-axis drive mechanism is connected to the second camera and the laser. The two-axis drive mechanism is used to drive the second camera and the laser to move in the left-right and up-down directions.

[0014] According to the optical module PCB laser marking and inspection equipment of this utility model embodiment, the bottom of the support is provided with multiple universal wheels, and the support is abutted against the ground through the multiple universal wheels.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the optical module PCB laser marking and inspection equipment according to an embodiment of this utility model; Figure 2 This is a structural diagram of the conveying device, the vision inspection device, and the sorting device; Figure 3 yes Figure 2 A magnified view of a section at point A in the middle; Figure 4 yes Figure 2 A magnified view of a section at point B in the middle; Figure 5 yes Figure 2 A magnified view of a section at point C; Figure 6 This is a schematic diagram of the laser marking device; Icon labels: Conveying device 100; First limiting plate 110; Second limiting plate 120; Laser marking device 200; support 210; two-axis drive mechanism 220; second camera 230; laser cutter 240; caster wheel 250; Visual inspection device 300; first camera 310; image detection module 320; lighting fixture 330; Sorting device 400; storage box 410; push cylinder 420; push plate 430; 500 racks. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] refer to Figure 1 This utility model discloses a laser marking and inspection device for optical module PCBs, including a frame 500, a conveying device 100, a laser marking device 200, and a vision inspection device 300. The frame 500 has a marking station and an inspection station, with the inspection station located in front of the marking station. The conveying device 100 is mounted on the frame 500 and is used to convey PCBs from back to front, so that the PCBs move sequentially to the marking station and the inspection station. The laser marking device 200 is used to laser mark the PCBs at the marking station to process barcodes on the PCB surface. The vision inspection device 300 is mounted on the frame 500 and is used to inspect the barcodes on the PCBs at the inspection station.

[0021] Understandably, when PCB processing is required, the operator places the PCB to be processed at the rear end of the conveyor 100, the conveyor 100 starts, and the conveyor 100 transports the PCB from back to front; after the PCB moves to the marking station, the conveyor 100 stops transporting the PCB, at which point the laser marking device 200 starts and performs laser marking on the PCB at the marking station to process a barcode on the surface of the PCB; after the laser marking of the PCB is completed, the conveyor 100 continues to transport the PCB forward; after the PCB moves to the inspection station, the conveyor 100 stops transporting the PCB, and then the vision inspection device 300 starts and inspects the barcode on the PCB at the inspection station, finally outputting the inspection result of whether the PCB's barcode is qualified. This optical module PCB laser marking and inspection equipment eliminates the PCB transfer step. The equipment directly connects the marking station and the inspection station through the conveyor device 100, which reduces the additional PCB transfer time and avoids the contamination of the PCB barcode area by handling and subsequent cleaning work. At the same time, the visual inspection device 300 replaces the manual handheld barcode scanner, so the barcode inspection process is not affected by the operator's skill level or fatigue. This allows the barcode inspection rhythm to be synchronized with the processing rhythm of the laser marking device 200, avoiding the accumulation of marked PCBs in the inspection stage and forming a production bottleneck. Ultimately, it significantly shortens the production cycle of PCBs from marking to qualified transfer, thus promoting efficient PCB production.

[0022] It should be explained that "from coding to qualified transfer" refers to the entire process from when the PCB enters the coding stage, to when the coding is completed, the barcode is confirmed to be qualified through inspection, and finally it can smoothly enter the next production process.

[0023] refer to Figure 1 , Figure 2 and Figure 4The optical module PCB laser marking and inspection equipment also includes a storage box 410 and a sorting device 400. Both the storage box 410 and the sorting device 400 are mounted on the frame 500. The sorting device 400 is electrically connected to the vision inspection device 300. The sorting device 400 is used to send the unqualified PCBs at the inspection station into the storage box 410. Understandably, when PCBs need to be processed, the operator places the PCB to be processed on the conveyor 100 and starts the conveyor 100. The conveyor 100 moves the PCB from back to front to the coding station. The laser coding device 200 laser-codes the PCB at the coding station to produce a barcode. After the laser coding of the PCB is completed, the conveyor 100 continues to move the PCB forward to the inspection station. The vision inspection device 300 then inspects the barcode on the PCB at the inspection station. After the vision inspection device 300 completes the inspection of the barcode on the PCB, if the barcode on the PCB at the current inspection station is qualified, the conveyor 100 will continue to move the PCB forward to the next processing step. If the barcode on the PCB at the current inspection station is unqualified, the vision inspection device 300 will transmit the unqualified signal to the sorting device 400. The sorting device 400 then starts and sends the unqualified PCB at the inspection station into the storage box 410 on the rack 500 to complete the sorting of the PCBs.

[0024] refer to Figure 4 The sorting device 400 includes a push cylinder 420 and a push plate 430. The cylinder body of the push cylinder 420 is mounted on the frame 500, and the piston rod of the push cylinder 420 is connected to the push plate 430. The push cylinder 420 can drive the push plate 430 to move towards the storage box 410, so that the push plate 430 pushes the unqualified PCBs at the inspection station into the storage box 410. In this embodiment of the present invention, the sorting device 400 also includes a first controller, which is electrically connected to the vision inspection device 300. The first controller is used to control the extension and retraction of the push cylinder 420. Understandably, after the PCB moves to the inspection station, the vision inspection device 300 inspects the barcode on the PCB at the inspection station. If the PCB is qualified, the conveyor device 100 continues to move the PCB forward to the next processing step. If the PCB is unqualified, the vision inspection device 300 transmits the unqualified signal to the first controller. After receiving the signal, the first controller extends the piston rod of the push cylinder 420. The piston rod of the push cylinder 420 drives the push plate 430 connected to it to move towards the storage box 410, so that the push plate 430 moves above the conveyor device 100 and pushes the unqualified PCB at the inspection station into the storage box 410. After the push cylinder 420 completes the pushing, the first controller controls the push cylinder 420 to retract to reset the push plate 430, waiting for the next sorting operation.

[0025] refer to Figure 2 and Figure 5 The optical module PCB laser marking and inspection equipment also includes two first limiting plates 110 and two second limiting plates 120. The two first limiting plates 110 and the two second limiting plates 120 are parallel to the front-back direction. The two first limiting plates 110 are located behind the inspection station, and the area between the two first limiting plates 110 is used for the movement of the PCB on the conveying device 100. The two second limiting plates 120 are located in front of the inspection station, and the area between the two second limiting plates 120 is used for the movement of the PCB on the conveying device 100. Understandably, the two first limiting plates 110 and the two second limiting plates 120 are parallel to the front-to-back direction. The two first limiting plates 110 are located behind the inspection station, and the area between the two first limiting plates 110 provides a moving channel for the PCB on the conveying device 100. This allows the two first limiting plates 110 to limit and guide the PCB moving towards the inspection station, preventing the PCB from shifting or tilting during transport. The two second limiting plates 120 are located in front of the inspection station, and the area between the two second limiting plates 120 also allows the PCB on the conveying device 100 to move. The two second limiting plates 120 can further limit and guide the PCB that has passed inspection and is being transported to the next process, ensuring that the PCB is always transported stably along the preset path. This not only ensures the accurate detection of the PCB barcode at the inspection station by the vision inspection device 300, but also prevents the PCB from shifting and affecting subsequent sorting operations or the connection of the next process, thus improving the stability and reliability of the optical module PCB laser marking and inspection equipment.

[0026] refer to Figure 5 The distance between the two first limiting plates 110 and the distance between the two second limiting plates 120 are adjustable. It is understood that the adjustable distances of both the first limiting plates 110 and the second limiting plates 120 allow them to accommodate PCBs of different widths, meeting the transport requirements of various PCB sizes without requiring replacement of the limiting components. This significantly improves the versatility and applicability of the laser marking and inspection equipment for optical module PCBs. Furthermore, operators can precisely adjust the distance between the first limiting plates 110 and the second limiting plates 120 according to the actual size of the PCB, ensuring that PCBs of different sizes move stably along a preset path when moving to the inspection station and transporting them to subsequent processes. This effectively avoids offset and skew problems caused by differences in PCB size, further ensuring the accurate detection effect of the visual inspection device 300 on barcodes. As one embodiment of this utility model, reference is made to... Figure 5The two first limiting plates 110 and the two second limiting plates 120 are slidably connected to the frame 500 through a common sliding rod guide hole connection, so that the distance between the two first limiting plates 110 and the two second limiting plates 120 can be adjusted. The frame 500 is also provided with a first handle locking component and a second handle locking component. The first handle locking component is used to fix the first limiting plate 110 to the frame 500, and the second handle locking component is used to fix the second limiting plate 120 to the frame 500, so as to prevent the positions of the first limiting plate 110 and the second limiting plate 120 from shifting during the operation of the equipment.

[0027] It should be explained that the two first limiting plates 110 are located behind the inspection station, and the two second limiting plates 120 are located in front of the inspection station. This is to prevent the first limiting plates 110 and the two limiting plates 120 from interfering with the operation of the sorting device 400. In this embodiment of the present invention, the conveying device 100 is a common belt conveyor device 100, and the two first limiting plates 110 and the two second limiting plates 120 are all located above the belt in the belt conveyor device 100, which will not be further described here.

[0028] refer to Figure 2 and Figure 3 The visual inspection device 300 includes a first camera 310 and an image detection module 320. The first camera 310 and the image detection module 320 are electrically connected. Both the first camera 310 and the image detection module 320 are mounted on a frame 500. The first camera 310 is positioned above the inspection station. The visual inspection device 300 also includes two lamps 330. Both lamps 330 are mounted on the frame 500 and are respectively positioned on both sides of the first camera 310. Both lamps 330 are used to illuminate the PCB at the inspection station. Understandably, after the PCB arrives at the inspection station, the two lamps 330 located on either side of the first camera 310 are activated simultaneously. The two lamps 330 illuminate the PCB at the inspection station to improve the clarity and contrast of the PCB barcode area. Subsequently, the first camera 310 located above the inspection station is activated and captures the barcode image on the PCB. The first camera 310 transmits the captured barcode image to the image detection module 320. The image detection module 320 analyzes and processes the received barcode image to determine whether there are problems such as blurry patterns, incompleteness, or insufficient contrast in the barcode. Finally, it outputs the inspection result of whether the barcode is qualified or unqualified. If the inspection result of the PCB is unqualified, the image detection module 320 transmits the unqualified signal to the sorting device 400.

[0029] In this embodiment of the invention, the image detection module 320 is a common functional module integrating a processor, storage unit, and dedicated detection algorithm. The image detection module 320 receives PCB barcode images captured by the first camera 310, first performs preprocessing such as noise reduction and contrast enhancement to correct image quality, then uses edge detection and contour recognition algorithms to accurately locate and extract clean barcode areas. Subsequently, it extracts key feature parameters such as bar width ratio, spacing consistency, integrity, and contrast, and compares these parameters with preset qualified barcode standard parameters to determine whether the barcode has problems such as blurred patterns, incompleteness, or insufficient contrast. Finally, it outputs a qualified or unqualified detection result, thus realizing the detection of PCB barcodes. The image detection module 320 is a common module in the field of visual recognition and will not be further described here.

[0030] refer to Figure 2 and Figure 3 The illumination angles of the two lamps 330 are adjustable. This adjustable illumination angle allows the lamps 330 to flexibly adjust the direction of light illumination according to the surface condition of the PCB, the specific location of the barcode, and the different sizes and specifications of the PCB. This effectively avoids problems such as glare and shadows on the barcode area caused by direct light, ensuring uniform and sufficient illumination of the barcode area on the PCB surface. This, in turn, improves the clarity and contrast of the barcode image captured by the first camera 310, providing a good image foundation for the image detection module 320 to accurately extract barcode feature parameters and accurately determine barcode quality. In one embodiment of this invention, the lamps 330 are hinged to the frame 500 via a hinge shaft. The frame 500 has an arc-shaped guide hole centered on the centerline of the hinge shaft. Bolts are threaded onto the lamps 330, and the bolts pass through the arc-shaped guide hole. When the illumination angle of lamp 330 needs to be adjusted, the operator can rotate lamp 330 by loosening the bolt; after the illumination angle is adjusted, the operator tightens the bolt so that the nut of the bolt is pressed against the frame 500, thus fixing the posture of lamp 330 to prevent the illumination angle of lamp 330 from changing during the testing process.

[0031] refer to Figure 6The laser marking device 200 includes a support 210, a two-axis drive mechanism 220, a second camera 230, an image recognition module, and a laser 240. The two-axis drive mechanism 220 is mounted on the support 210 and is electrically connected to the image recognition module. The output end of the two-axis drive mechanism 220 is connected to the second camera 230 and the laser 240. The two-axis drive mechanism 220 is used to drive the second camera 230 and the laser 240 to move in the left-right and up-down directions. Understandably, after the PCB is transported to the marking station, the two-axis drive mechanism 220 moves the second camera 230 and the laser 240, causing the second camera 230 to move above the marking station. The second camera 230 captures an image of the PCB surface at the marking station and transmits it to the image recognition module. The image recognition module analyzes the image to accurately identify the preset marking area on the PCB. Subsequently, the image recognition module sends a control signal to the two-axis drive mechanism 220, which drives the laser 240 to adjust to a position that precisely corresponds to the marking area. After positioning is completed, the laser 240 starts and, under the coordinated drive of the two-axis drive mechanism 220, performs laser processing on the marking area of ​​the PCB according to the preset barcode pattern, ultimately forming a barcode on the PCB surface that carries key information such as model number and production batch.

[0032] The image recognition module receives and analyzes images of the PCB surface captured by the second camera 230 to identify preset marking areas on the PCB. It then sends control signals to the two-axis drive mechanism 220, instructing it to adjust its position in the left-right and up-down directions. This causes the second camera 230 and the laser engraver 240 to move synchronously to positions perfectly corresponding to the marking areas. This provides a positioning basis for the laser engraver 240 to accurately process the barcode according to the preset pattern, avoiding barcode position errors caused by marking area offset, and preventing incompatibility with subsequent inspection or usage requirements. It also improves the adaptability of the laser marking device 200 to PCBs of different specifications and with different preset marking areas, ensuring the accuracy and consistency of barcode processing. The image recognition module is a common module in the field of visual recognition and will not be elaborated further here. In this embodiment of the utility model, the laser 240 is a common laser emitter used for laser processing of barcodes on the surface of a PCB. The laser 240 emits a laser that acts on the marking area of ​​the PCB to process barcodes in the marking area of ​​the PCB; the two-axis drive mechanism 220 is a common drive component, which will not be described in detail here.

[0033] refer to Figure 6The support 210 has multiple casters 250 at its bottom, which abut against the ground. This abutment of the casters 250 allows the support 210 to move the two-axis drive mechanism 220, the second camera 230, and the laser 240. This facilitates adjusting the installation position of the laser marking device 200 according to the layout of the production workshop and also facilitates later inspection, maintenance, or relocation of the laser marking device 200. In this embodiment, the casters 250 are self-locking casters 250.

[0034] As another embodiment of this utility model, the optical module PCB laser marking and inspection equipment also includes a cleaning cover, a brush roller, and a dust collection device. The cleaning cover is mounted on the frame 500 and is located between the marking station and the inspection station. The bottom of the cleaning cover is used for the PCB on the conveying device 100 to pass through. The brush roller is parallel to the left and right direction, and its two ends are rotatably connected to the cleaning cover. Part of the structure of the brush roller is located inside the cleaning cover. The brush roller is located in the middle of the cleaning cover and is used to scrape the surface of the PCB on the conveying device 100. The dust collection device is used to extract the gas from the cleaning cover. Understandably, the PCB to be processed is placed on the rear end of the conveyor 100. The conveyor 100 moves the PCB from back to front to the coding station. The laser coding device 200 performs laser coding on the PCB at the coding station to process barcodes on the PCB surface. After coding, the PCB continues to be conveyed forward and passes under the cleaning cover located between the coding station and the inspection station. At this time, the brush roller connected to the cleaning cover rotates to scrape the PCB surface, and the dust collection device starts to extract the air inside the cleaning cover. The brush roller can brush off the dust, debris and other impurities attached to the PCB surface, and the dust collection device can extract the impurities brushed off by the brush roller along with the air to complete the cleaning of the PCB surface. The cleaned PCB continues to be conveyed to the inspection station. The vision inspection device 300 inspects the barcode on the PCB. Qualified PCBs are sent to the next processing step by the conveyor 100, and unqualified PCBs are sent to the storage box 410 by the sorting device 400. Adding a cleaning step after PCB coding and before inspection, using a brush roller to scrape the PCB surface effectively removes dust, debris, and other impurities that may have accumulated during coding or transport. At the same time, a dust extraction device promptly removes the air from the cleaning enclosure, preventing the scraped-off impurities from scattering and re-adhering to the PCB surface, thus preventing secondary contamination. This ensures that the PCB barcode area entering the inspection station is clean and free of impurities, thereby guaranteeing the clarity and accuracy of the 300 pairs of barcodes captured by the vision inspection device and reducing misjudgments caused by impurities obstructing or interfering with the process.

[0035] In this embodiment, the optical module PCB laser marking and inspection equipment also includes a brush motor, which is mounted on the frame 500 and connected to the brush roller drive. The brush motor is used to drive the brush roller to rotate. The dust collection device is a common setting in the cleaning field and will not be described in detail here.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A laser marking and inspection device for optical module PCBs, characterized in that, include: The frame (500) is equipped with a coding station and an inspection station, wherein the inspection station is located in front of the coding station; A conveying device (100) is provided on the frame (500). The conveying device (100) is used to convey the PCB from back to front so that the PCB moves sequentially to the coding station and the inspection station. A laser marking device (200) is used to laser mark the PCB at the marking station to process barcodes on the PCB surface. A visual inspection device (300) is mounted on the frame (500) and is used to inspect the barcodes on the PCB at the inspection station.

2. The optical module PCB laser marking and inspection equipment according to claim 1, characterized in that: It also includes a storage box (410) and a sorting device (400), both of which are mounted on the frame (500). The sorting device (400) is electrically connected to the vision inspection device (300). The sorting device (400) is used to send the non-conforming PCBs at the inspection station into the storage box (410).

3. The optical module PCB laser marking and inspection equipment according to claim 2, characterized in that: The sorting device (400) includes a push cylinder (420) and a push plate (430). The cylinder body of the push cylinder (420) is mounted on the frame (500). The piston rod of the push cylinder (420) is connected to the push plate (430). The push cylinder (420) can drive the push plate (430) to move toward the storage box (410) so that the push plate (430) pushes the unqualified PCB at the inspection station into the storage box (410).

4. The optical module PCB laser marking and inspection equipment according to claim 2, characterized in that: It also includes two first limiting plates (110) and two second limiting plates (120). The two first limiting plates (110) and the two second limiting plates (120) are parallel to the front-back direction. The two first limiting plates (110) are located behind the inspection station. The area between the two first limiting plates (110) is used for the PCB on the conveying device (100) to move. The two second limiting plates (120) are located in front of the inspection station. The area between the two second limiting plates (120) is used for the PCB on the conveying device (100) to move.

5. The optical module PCB laser marking and inspection equipment according to claim 4, characterized in that: The distance between the two first limiting plates (110) is adjustable, and the distance between the two second limiting plates (120) is adjustable.

6. The optical module PCB laser marking and inspection equipment according to claim 1, characterized in that: The visual inspection device (300) includes a first camera (310) and an image detection module (320). The first camera (310) is electrically connected to the image detection module (320). Both the first camera (310) and the image detection module (320) are mounted on the frame (500). The first camera (310) is positioned above the inspection station.

7. The optical module PCB laser marking and inspection equipment according to claim 6, characterized in that: The visual inspection device (300) also includes two lamps (330), both of which are mounted on the frame (500) and are respectively located on both sides of the first camera (310). Both lamps (330) are used to illuminate the PCB at the inspection station.

8. The optical module PCB laser marking and inspection equipment according to claim 7, characterized in that: The illumination angles of the two lamps (330) are adjustable.

9. The optical module PCB laser marking and inspection equipment according to claim 1, characterized in that: The laser marking device (200) includes a support (210), a two-axis drive mechanism (220), a second camera (230), an image recognition module, and a laser (240). The two-axis drive mechanism (220) is mounted on the support (210) and is electrically connected to the image recognition module. The output end of the two-axis drive mechanism (220) is connected to the second camera (230) and the laser (240). The two-axis drive mechanism (220) is used to drive the second camera (230) and the laser (240) to move in the left-right and up-down directions.

10. The optical module PCB laser marking and inspection equipment according to claim 9, characterized in that: The bottom of the support (210) is provided with a plurality of casters (250), and the support (210) rests against the ground through the plurality of casters (250).

Images