Device for detecting the surface coating of a weather strip

Abstract

The application provides a kind of sealing strip surface coating detection device, belongs to coating detection technical field, including rack, and sequentially distribute in the light detection component of conveying direction, image acquisition component and defect marking component in the rack, the light detection component first excites sealing strip surface coating to generate fluorescence, image acquisition component captures fluorescence image and automatically carries out defect analysis and identification in proper order, once detects, such as uneven thickness, defect such as coating leakage, immediately instructs defect marking component to carry out accurate marking in defect position.The sealing strip surface coating detection device provided by the application realizes full coverage, real-time continuous detection of the sealing strip coating, effectively overcomes the risk of missing detection caused by intermittent manual sampling in the prior art, and can timely capture and locate the instantaneous coating defects.

Description

Technical Field

[0001] This application belongs to the field of coating inspection technology, and more specifically, it relates to a device for inspecting the coating on the surface of a sealing strip. Background Technology

[0002] The main material used for sealing strips is usually an elastomer, such as EPDM rubber, neoprene rubber, or silicone rubber. These materials themselves have good elasticity and sealing performance, but in practical applications, their surface properties need to be enhanced by coatings to reduce the coefficient of friction, improve aging resistance, and prevent adhesion.

[0003] If the process parameters are not controlled stably during the spraying and curing of the coating, various coating defects may occur, such as uneven thickness, missed areas, sagging, bubbles, or uneven surface roughness. These defects will directly affect the normal functioning of the coating, thereby reducing the overall performance and service life of the sealing strip.

[0004] In existing technologies, the quality inspection of sealing strip surface coatings mainly relies on operators periodically irradiating the product coating with a handheld ultraviolet lamp, visually judging whether the coating is uniform, complete, or has defects such as missed coating. This manual inspection method has significant limitations: First, because the inspection process is not continuous and is only carried out at specific points in time, intermittent coating defects that occur during production (such as localized missed coatings or uneven thickness) are difficult to detect in a timely manner, resulting in a high risk of missed inspections. Second, manual visual inspection is easily affected by factors such as operator subjective experience, visual fatigue, and ambient light, making it difficult to guarantee the stability and consistency of the inspection results. In addition, under high-speed continuous production conditions, the efficiency of manual inspection is not matched with the production line cycle, making it impossible to achieve full-coverage real-time monitoring. These problems collectively lead to a significant increase in the risk of defective coated products being exported, which not only affects the quality of the final product but may also lead to subsequent customer complaints and rework costs. Utility Model Content

[0005] The purpose of this application is to provide a detection device for the surface coating of sealing strips, which aims to solve the problems that existing detection methods cannot achieve continuous detection and rely on human subjective experience, resulting in low detection efficiency and insufficient detection accuracy.

[0006] This application provides a device for detecting the surface coating of a sealing strip, including a frame, and a light detection component, an image acquisition component, and a defect marking component sequentially distributed along the conveying direction on the frame. The image acquisition component is communicatively or electrically connected to the defect marking component. The light detection component is used to excite the fluorescence of the surface coating of the sealing strip, and the image acquisition component is used to acquire an image of the coating after it has been excited to fluorescence and to detect surface defects. When the image acquisition component detects a defect in the coating of the sealing strip, the defect marking component is used to mark the defect location on the sealing strip.

[0007] The beneficial effects of the sealing strip surface coating detection device provided in this application are as follows: Compared with the prior art, the light-emitting detection component first excites the sealing strip surface coating to produce fluorescence, and the image acquisition component then captures the fluorescence image and automatically performs defect analysis and identification. Once defects such as uneven thickness or missing coating are detected, the defect marking component is immediately instructed to accurately mark the defect location. This application achieves full coverage and real-time continuous detection of the sealing strip coating, effectively overcoming the risk of missed detection caused by intermittent manual sampling in the prior art, and can promptly capture and locate coating defects that appear instantaneously. By replacing manual visual judgment with image acquisition and processing technology, the inconsistency of detection results caused by operator subjective experience, visual fatigue, or ambient light interference is eliminated, significantly improving detection accuracy and objective stability of results. In addition, the device has high detection efficiency and can perfectly match the high-speed continuous production cycle. While improving the automation level of the production line, it prevents defective products from flowing into subsequent processes, thereby ensuring product consistency and reliability and reducing customer complaints and rework costs.

[0008] In conjunction with the first aspect, in one possible implementation, the illumination detection component includes: Mounting bracket, connected to the rack; and A light source, connected to the mounting bracket, has an annular receiving channel for passing through a sealing strip, and the light source is used to project ultraviolet light onto the sealing strip.

[0009] In the above technical solution, the light source uniformly projects ultraviolet light onto the surface of the sealing strip within the accommodating channel in all directions, without any blind spots. This annular illumination structure completely overcomes the illumination shadows and blind spots caused by the complex shape or uneven surface of the sealing strip in traditional unidirectional light sources. It can uniformly and fully excite the fluorescence of the coating on the entire circumferential surface of the sealing strip, providing downstream image acquisition components with original images that have consistent lighting conditions, clear signal characteristics, and no distortion.

[0010] In conjunction with the first aspect, in one possible implementation, the image acquisition component includes: A fixed frame includes a frame body and an adjusting plate disposed on the frame body. The frame body is connected to the machine frame. The adjusting plate is an annular component with a central hole forming a clearance area for accommodating a sealing strip, and the adjusting plate is provided with an annular guide rail. A data acquisition mechanism includes a support and a data acquisition device connected to the support. The support is slidably connected to the guide rail, and the data acquisition mechanism has a fixing part that is fixed at a designated position on the support.

[0011] In the above technical solution, the circumferential angle of the data acquisition device is freely and precisely adjusted along the guide rail according to the specific model of the sealing strip and the position of the surface to be inspected, and reliably locked in the optimal shooting position by the fixing part. This design realizes the stepless adjustment function of the observation orientation of the data acquisition device, ensuring that the axis of the camera can always be accurately focused on the key area of ​​the sealing strip, effectively overcoming the problems of image acquisition blind spots or viewing angle deviations caused by the complex contour of the sealing strip or changes in inspection requirements. Therefore, this structure not only greatly enhances the adaptability of the device to sealing strips of different specifications and inspection requirements, but also ensures the consistency, integrity and clarity of the acquired images.

[0012] In conjunction with the first aspect, in one possible implementation, there are multiple acquisition mechanisms, which are centrally and symmetrically distributed on the adjustment disk.

[0013] In the above technical solution, this symmetrical layout allows multiple data acquisition units to simultaneously capture images of the sealing strip surface passing through the avoidance zone from multiple different angles around the circumference of the sealing strip. This achieves a one-time, synchronous panoramic acquisition of the entire circumferential outer surface of the sealing strip, completely eliminating detection blind spots that may occur due to the limited field of view of a single data acquisition unit, ensuring complete and seamless image coverage. Compared to solutions that rely on the rotation or movement of a single data acquisition unit, this solution eliminates the need for complex motion control, simplifying the system structure, improving image acquisition efficiency, and perfectly matching the high-speed, continuous production rhythm, achieving simultaneous optimization of detection capability and production efficiency.

[0014] In conjunction with the first aspect, in one possible implementation, the collector is slidably connected to the bracket, and the collection mechanism further includes a driver disposed on the bracket, the driver controlling the collector to move radially along the adjustment disk.

[0015] In the above technical solution, the driver can precisely control the radial movement of the collector along the adjustment disc, thereby fine-tuning the working distance between the collector and the sealing strip surface. It can quickly adapt to sealing strip products with different diameters or cross-sectional shapes. Through radial adjustment, the collector is always kept at the optimal imaging distance, ensuring the clarity and consistency of image acquisition.

[0016] In conjunction with the first aspect, in one possible implementation, the defect marking component includes: Support frame, connected to the frame; Marking elements, slidably connected to the support frame, are used to form marks on the surface of the sealing strip; and A marker driver, connected to the marker element, is used to control the marker element to slide along the support frame.

[0017] In the above technical solution, the marker is fixed to the frame by a support bracket, and under the control of the marking drive, it can slide precisely along the support bracket. When the upstream image acquisition component identifies a coating defect and determines its location, the marking drive immediately receives the instruction and drives the marker to slide quickly and accurately to the coordinate point corresponding to the defect location on the sealing strip, forming a prominent mark on its surface. This solution overcomes the shortcomings of traditional static marking or manual marking on high-speed production lines, such as slow response and inaccurate positioning, enabling uninterrupted, synchronous, and precise marking of continuously moving sealing strips.

[0018] In conjunction with the first aspect, in one possible implementation, the detection device for the surface coating of the sealing strip further includes a limiting component disposed upstream and / or downstream of the light detection component, the limiting component comprising: Guide frame; and A limiting component is detachably connected to the guide frame. The limiting component has a limiting hole, which is clearance-fitted with the sealing strip and is used to limit the insertion of the sealing strip.

[0019] In the above technical solution, the sealing strip passes through the limiting hole during transport, and the insertion and limiting are achieved through a clearance fit. This effectively physically constrains and precisely guides the flexible and easily deformable sealing strip, ensuring that it maintains a preset posture and stable position when passing through the light detection and image acquisition area, thus guaranteeing the accuracy and consistency of subsequent fluorescence excitation and image acquisition. The limiting component and the guide frame are detachably connected, allowing for quick replacement of the limiting component with the appropriate specification according to different sealing strip product models, greatly enhancing the flexibility and versatility of the entire detection device.

[0020] In conjunction with the first aspect, in one possible implementation, the limiting component further includes a guiding mechanism disposed on the side of the guide frame opposite to the light detection component, the guiding mechanism comprising: Guide bracket, connected to the guide frame; The first guide includes two first guide rods slidably connected to the guide bracket along a first path; and The second guide includes two second guide rods slidably connected to the guide bracket along a second path. The first path is perpendicular to the second path. The two first guide rods and the two second guide rods enclose a guide channel. The limiting hole corresponds to the guide channel and is located downstream of the guide channel in the conveying direction.

[0021] In the above technical solution, when the sealing strip is conveyed from the production line to the limiting component, the sealing strip first passes through the guide channel to correct its posture, and then passes through the limiting hole to fix its position. This ensures that it enters the light detection component with a stable and accurate posture, avoiding uneven illumination or image acquisition deviation caused by position fluctuations, and improving detection accuracy. According to the position and specifications of the sealing strip, the first and second guide rods are adjusted so that the guide channel adapts to the current position of the sealing strip and smoothly guides it to the downstream limiting hole. This avoids the sealing strip from directly hitting the edge of the limiting hole due to deviation, which could cause jamming or coating scratches, ensuring the smoothness of the conveying process.

[0022] In conjunction with the first aspect, in one possible implementation, the rack includes: A lifting mechanism includes a main frame and a lifting drive connected to the main frame, the lifting drive having a lifting end that moves in a vertical direction; and A workbench is connected to the lifting end, and the light detection component, the image acquisition component, and the defect marking component are all located on the workbench.

[0023] In the above technical solution, the lifting mechanism's up-and-down adjustment function allows the worktable height to be flexibly adapted to the conveying paths of production lines with different heights. Regardless of how the height of the conveying rollers or the installation space of the sealing strip production line changes, the worktable can be precisely adjusted to the matching position through the lifting drive. This ensures that the receiving channel of the light detection component and the limiting hole of the limiting component are aligned with the height of the sealing strip conveying trajectory, avoiding obstruction of the sealing strip conveying or displacement of the detection position due to height deviation, and greatly improving the device's adaptability to different production lines.

[0024] In conjunction with the first aspect, in one possible implementation, the lifting mechanism further includes a guide column connected to the main structure, and the worktable is slidably connected to the guide column in the vertical direction.

[0025] In the above technical solution, the guide column can provide precise guidance constraints for the up and down movement of the worktable, avoiding left and right deviations or tilts of the worktable during the lifting process due to uneven force or fluctuations in the lifting drive output, ensuring that the worktable always moves smoothly in the vertical direction, thereby ensuring that the light detection component, image acquisition component, defect marking component, etc. integrated on the worktable always maintain a stable relative position. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of the detection device for the surface coating of the sealing strip provided in the embodiments of this application; Figure 2 Another schematic diagram of the device for detecting the surface coating of the sealing strip provided in the embodiments of this application; Figure 3 This is a schematic diagram of the structure of the image acquisition component and the defect marking component used in the embodiments of this application; Figure 4 This is a front view of the image acquisition component used in another embodiment of this application; Figure 5 This is a schematic diagram of the limiting component used in the embodiments of this application.

[0028] In the diagram: 1. Frame; 101. Lifting mechanism; 1011. Main structure; 1012. Lifting drive; 1013. Guide column; 102. Workbench; 2. Illumination detection component; 201. Mounting frame; 202. Light source component; 3. Image acquisition component; 301. Fixing frame; 3011. Frame body; 3012. Adjustment plate; 302. Acquisition mechanism; 3021. Support; 3022. Acquisition device; 303. Drive gear; 4. Defect marking component; 401. Marking drive; 402. Support frame; 403. Marking component; 5. Limiting component; 501. Guide frame; 502. Limiting component; 5021. Limiting hole; 503. First guide; 504. Second guide; 505. Guide bracket. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a few" means two or more, unless otherwise explicitly specified.

[0032] It should be noted that the directions or positional relationships indicated by "front", "rear", "inner", "outer", "up", and "down" in this embodiment are based on the vehicle's own orientation. The front of the vehicle represents "front", the rear of the vehicle represents "rear", the top of the vehicle represents "up", the bottom of the vehicle represents "down", the "inner" side refers to the side facing the driver's cab, and the "outer" side refers to the side facing the driver's cab.

[0033] In addition, the front-rear direction of the vehicle body as defined in the embodiments of this application refers to the front-rear direction of the vehicle's forward direction during driving; the left-right direction of the vehicle body as defined refers to the left-right direction of the vehicle's forward direction during driving; and the up-down direction of the vehicle body as defined refers to the up-down direction of the vehicle's forward direction during driving.

[0034] Please refer to the following: Figures 1 to 5 The detection device for the surface coating of a sealing strip provided in this application will now be described. The detection device for the surface coating of a sealing strip includes a frame 1, and a light detection component 2, an image acquisition component 3, and a defect marking component 4, which are sequentially distributed along the conveying direction on the frame 1. The image acquisition component 3 and the defect marking component 4 are communicatively or electrically connected. The light detection component 2 is used to excite the fluorescence of the surface coating of the sealing strip, and the image acquisition component 3 is used to acquire an image of the coating after it has been excited to fluorescence and to detect surface defects. When the image acquisition component 3 detects a defect in the coating of the sealing strip, the defect marking component 4 is used to mark the defect location of the sealing strip.

[0035] The sealing strip surface coating detection device provided in this application, compared with existing technologies, achieves continuous real-time detection of the sealing strip coating. Compared with manual periodic sampling inspection, it can cover the entire process of sealing strip transportation and production, and promptly capture intermittent coating defects that occur during production, such as local missed coating and uneven thickness, significantly reducing the risk of missed detection and ensuring that coating quality problems are quickly detected in the production stage, preventing defective products from flowing into subsequent processes. The detection process relies on the automated analysis of the image acquisition component 3, replacing manual visual judgment, effectively avoiding the interference of factors such as operator subjective experience, visual fatigue, and ambient light on the detection results, significantly improving the stability and consistency of the detection results, and ensuring detection accuracy. At the same time, the automated detection and marking process can match the pace of high-speed continuous production lines, and can complete efficient detection without manual intervention, which not only improves the overall detection efficiency but also reduces labor costs. In addition, the defect marking component 4 can accurately mark the location of the sealing strip defect while detecting the defect, providing clear guidance for subsequent defect analysis and rework, helping to quickly locate the root cause of the problem and reduce rework costs.

[0036] Optionally, image acquisition component 3 is a camera.

[0037] It should be noted that the sealing strip is transported by a separate traction machine. The traction machine can be the traction equipment that comes with the sealing strip production and processing system, or it can be a separate traction equipment set up to detect defects in the surface coating of the sealing strip. There is no specific limitation.

[0038] It should be noted that the distance between the image acquisition component 3 and the defect marking component 4 is fixed. Therefore, when the conveying speed is constant, the time it takes for the sealing strip to move from the image acquisition component 3 to the defect marking component 4 is constant. When the image acquisition component 3 detects a defect in the coating of the sealing strip, it feeds the information back to the defect marking component 4. The control system activates the defect marking component 4 according to the preset time, thereby marking the defects on the surface of the sealing strip.

[0039] Please see Figures 1 to 2 In some embodiments, the light detection assembly 2 includes a mounting frame 201 and a light source 202. The mounting frame 201 is connected to the frame 1; the light source 202 is connected to the mounting frame 201 and has an annular receiving channel for passing through a sealing strip. The light source 202 is used to project ultraviolet light onto the sealing strip.

[0040] The annular positioning channel allows the light source 202 to form a 360° ultraviolet light irradiation area around the sealing strip without blind spots. Compared with the potential local irradiation blind spots of traditional non-annular light sources, this ensures that the coating on the outer surface of the sealing strip is uniformly and comprehensively excited for fluorescence. This avoids coating defects in some areas that cannot be captured by the subsequent image acquisition component 3 due to uneven illumination, thus improving the integrity and reliability of fluorescence excitation from the source of detection. The sealing strip passes through the annular positioning channel, which can be precisely adapted to the conveying rhythm of the production line. Stable illumination can be achieved without additional position adjustment during the continuous conveying of the sealing strip. This ensures the continuity of illumination detection and avoids the positional deviation of illumination caused by the offset of the sealing strip. This further provides a good foundation for the subsequent image acquisition component 3 to obtain clear and complete coating fluorescence images, meeting the coating quality inspection requirements in high-speed continuous production scenarios.

[0041] Optionally, multiple light source elements 202 are spaced apart along the conveying direction. Multiple spaced light source elements 202 can form a continuously covered ultraviolet light irradiation area along the conveying path of the sealing strip. Compared with the single-point irradiation of a single light source element 202, this can avoid the problem of insufficient illumination time and insufficient fluorescence excitation intensity in local areas due to the high conveying speed of the sealing strip, and ensure that the outer coating of the sealing strip can be fully excited to fluoresce throughout the entire conveying process.

[0042] Optionally, the light source 202 is a ring-shaped component.

[0043] Please see Figures 1 to 3 In some embodiments, the image acquisition component 3 includes a mounting frame 301 and an acquisition mechanism 302. The mounting frame 301 includes a frame body 3011 and an adjustment plate 3012 disposed on the frame body 3011. The frame body 3011 is connected to the frame 1. The adjustment plate 3012 is an annular component with a central hole forming a clearance area for accommodating a sealing strip. The adjustment plate 3012 is provided with an annular guide rail. The acquisition mechanism 302 includes a bracket 3021 and an acquisition device 3022 connected to the bracket 3021. The bracket 3021 is slidably connected to the guide rail. The acquisition mechanism 302 has a fixing part fixed at a designated position on the bracket 3021.

[0044] The cooperation between the annular guide rail and the center hole clearance area of ​​the adjustment disc 3012 allows the acquisition mechanism 302 to slide 360° around the through-hole sealing strip. Compared to a fixed-position acquisition method, this allows for flexible adjustment of the acquisition angle and position of the acquisition device 3022 according to the sealing strip diameter, coating inspection focus, and other requirements, quickly adjusting the acquisition mechanism 302 to the optimal imaging position and fixing it stably. This solution is highly adaptable, requiring no replacement of the entire acquisition assembly; simply by sliding adjustment, it can meet the inspection needs of sealing strips of different specifications, reducing equipment replacement costs and further enhancing the practicality and efficiency of the inspection device in diverse production scenarios.

[0045] As one specific implementation of the image acquisition component 3, please refer to Figure 4 The image acquisition component 3 also includes a drive mechanism mounted on the frame 1. The adjustment disk 3012 is rotatably connected to the bracket 3021. The drive mechanism includes a motor and a drive gear 303 connected to the motor. The outer circumferential surface of the adjustment disk 3012 is provided with transmission teeth. The drive gear 303 meshes with the transmission teeth. The motor controls the drive gear 303 to rotate, thereby driving the adjustment disk 3012 to rotate around its own axis, so as to realize all-round detection of the sealing strip surface.

[0046] When the drive mechanism rotates the adjustment disk 3012, it simultaneously drives the acquisition mechanism 302, which is slidably connected to the guide rail of the adjustment disk 3012, to perform a circular motion around the sealing strip. Compared to methods that rely on the sliding of the acquisition mechanism 302 itself or the rotation of the sealing strip, this method achieves more stable and uniform 360° all-around image acquisition. It can completely capture the fluorescent image of every coating on the outer periphery of the sealing strip, completely eliminating blind spots in the detection under a fixed viewing angle, and significantly improving the recognition rate of defects in hidden locations such as the sides and seams of the annular sealing strip. The motor-driven automated rotation method can precisely control the rotation speed of the adjustment disk 3012. The circular motion rhythm of the acquisition mechanism 302 can be flexibly adjusted according to the sealing strip conveying speed and the coating defect recognition requirements, ensuring that the shooting interval and coverage of each frame remain consistent, avoiding fluctuations in acquisition parameters caused by manual adjustment, and improving the accuracy and reliability of defect detection.

[0047] Please see Figures 1 to 3 In some embodiments, multiple acquisition mechanisms 302 are provided, and the multiple acquisition mechanisms 302 are centrally symmetrically distributed on the adjustment disk 3012.

[0048] Multiple centrally symmetrical acquisition mechanisms 302 can simultaneously acquire images from multiple symmetrical angles around the outer periphery of the sealing strip. Compared to scanning one by one by a single acquisition mechanism 302, this significantly shortens the omnidirectional image acquisition time for a single sealing strip. Furthermore, the centrally symmetrical distribution design allows the imaging areas of each acquisition mechanism 302 to effectively complement and cross-verify. This avoids missed images due to the malfunction of a single acquisition mechanism 302 and enables more accurate identification of minute defects such as uneven coating thickness and micro-bubbles through multi-view image comparison, reducing the risk of misjudgment from a single perspective and further improving the accuracy and reliability of defect detection. In addition, the symmetrical layout of the multiple acquisition mechanisms 302 balances the forces acting on the adjustment disk 3012 during rotation, preventing rotational deviation of the adjustment disk 3012 due to uneven distribution of the acquisition mechanisms 302 and ensuring its stable rotation around the sealing strip axis.

[0049] Please see Figures 1 to 4In some embodiments, the collector 3022 is slidably connected to the bracket 3021, and the collection mechanism 302 also includes a driver disposed on the bracket 3021, the driver controlling the collector 3022 to move radially along the adjustment disk 3012.

[0050] When the driver moves the collector 3022 radially, the imaging distance between the collector 3022 and the sealing strip surface can be flexibly adjusted. This allows for quick adjustment of the collector 3022 to the optimal imaging distance for sealing strips of different diameters, ensuring clear coating fluorescence images and improving the device's adaptability to various sealing strip specifications. Furthermore, it allows for dynamic adjustment of imaging parameters and angles based on coating defect detection needs, further enhancing the accuracy of identifying different types of defects. The radial adjustment function compensates for slight radial offsets that may occur during sealing strip transport. When a small deviation occurs in the sealing strip position, there is no need to adjust the entire transport path; simply fine-tuning the position of the collector 3022 via the driver realigns it with the detection area, avoiding image blurring or detection blind spots caused by positional offsets and ensuring the stability of the continuous detection process. Moreover, this automated radial adjustment method eliminates the need for manual adjustment of the collector 3022 position, reducing errors caused by manual intervention and enabling rapid response to production line specification changes, thus shortening equipment debugging time.

[0051] Optionally, the actuator is a telescopic component, such as a pneumatic or hydraulic telescopic component.

[0052] Please see Figure 2 In some embodiments, the defect marking assembly 4 includes a support frame 402, a marking element 403, and a marking drive 401. The support frame 402 is connected to the frame 1. The marking element 403 is slidably connected to the support frame 402 and is used to form a mark on the surface of the sealing strip. The marking drive 401 is connected to the marking element 403 and is used to control the marking element 403 to slide along the support frame 402.

[0053] The marking driver 401 controls the sliding of the marking element 403, enabling it to quickly move to the corresponding defect location the instant the image acquisition component 3 detects a defect. Compared to manual marking or fixed-position marking, this allows for precise defect location marking, avoiding the inability to accurately locate the defect point due to marking delays or positional deviations. The structure of the marking element 403 sliding along the support frame 402 adapts to the marking needs of sealing strips of different diameters and specifications. Regardless of the size of the sealing strip, the marking driver 401 can flexibly adjust the sliding trajectory and contact position of the marking element 403, ensuring that the mark is clearly and stably formed in the defect area without causing additional damage to non-defective parts of the sealing strip. Furthermore, this embodiment can be completely synchronized with the detection rhythm of the image acquisition component 3 and the conveying rhythm of the production line, improving marking efficiency and avoiding the problems of missed or incorrect marking caused by mismatch between manual marking and production line speed. Optionally, the defect marking component 4 is provided in two sets in a mirror-symmetrical manner along the conveying direction, which can mark different positions of the sealing strip.

[0054] Please see Figure 5 In some embodiments, the detection device for the surface coating of the sealing strip further includes a limiting component 5 located upstream and / or downstream of the light detection component 2. The limiting component 5 includes a guide frame 501 and a limiting member 502. The limiting member 502 is detachably connected to the guide frame 501. The limiting member 502 has a limiting hole 5021, which is clearance-fitted with the sealing strip and is used to limit the insertion of the sealing strip.

[0055] The clearance fit between the limiting hole 5021 and the sealing strip effectively guides and constrains the sealing strip, preventing significant displacement due to vibration or external forces during transport. This ensures the sealing strip stably enters the receiving channel of the light detection component 2 and the detection area of ​​the image acquisition component 3. Simultaneously, it maintains an appropriate gap to prevent rigid friction or compression between the limiting component 502 and the sealing strip surface, thus preventing scratches and wear on the sealing strip coating and ensuring product integrity. The detachable limiting component 502 design, combined with different specifications of clearance limiting holes 5021, flexibly adapts to sealing strips of various diameters and cross-sectional shapes. Simply replacing the corresponding limiting component 502 meets the detection requirements of different products without adjusting the main structure of the guide frame 501, improving the versatility and changeover efficiency of the device and reducing equipment adaptation costs. Furthermore, the upstream and / or downstream limiting layout provides stable control over the sealing strip transport path throughout the entire process, ensuring the consistency of the sealing strip position during the detection process and reducing detection errors or marking deviations caused by position fluctuations. Optionally, the guide component can also be located downstream of the image acquisition component 3.

[0056] Optionally, the guide frame 501 can be connected to the frame 1 or the light detection component 2, or it can be connected to the image acquisition component 3.

[0057] Optionally, the shape of the limiting hole 5021 is consistent with the shape of the sealing strip.

[0058] Please see Figure 5In some embodiments, the limiting component 5 further includes a guiding mechanism disposed on the side of the guide frame 501 away from the light detection component 2. The guiding mechanism includes a guide bracket 505, a first guide member 503, and a second guide member 504. The guide bracket 505 is connected to the guide frame 501. The first guide member 503 includes two first guide rods slidably connected to the guide bracket 505 along a first path. The second guide member 504 includes two second guide rods slidably connected to the guide bracket 505 along a second path. The first path is perpendicular to the second path. The two first guide rods and the two second guide rods enclose a guiding channel. The limiting hole 5021 corresponds to the inside of the guiding channel and is located downstream of the guiding channel in the conveying direction.

[0059] The guiding channel of the guiding mechanism can pre-position and correct the sealing strip. When the sealing strip is conveyed from the production line to the limiting component 5, the sealing strip first passes through the guiding channel to correct its posture, and then passes through the limiting hole 5021 to fix its position. This ensures that it enters the light detection component 2 with a stable and accurate posture, avoiding uneven illumination or image acquisition deviation caused by position fluctuations, and improving detection accuracy. According to the position and specifications of the sealing strip, the first and second guide rods are adjusted so that the guiding channel adapts to the current position of the sealing strip and smoothly guides it to the downstream limiting hole 5021. This avoids the sealing strip from directly hitting the edge of the limiting hole 5021 due to deviation, which could cause jamming or coating scratches, and ensures the smoothness of the conveying process.

[0060] Optionally, the guide bracket 505 has a first adjustment groove and a second adjustment groove that are perpendicular to each other. The first guide rod is slidably inserted into the first adjustment groove, and the second guide rod is slidably inserted into the second adjustment groove. The first guide rod can be fixed at a designated position in the first adjustment groove, and the second guide rod can be fixed at a designated position in the second adjustment groove, for example, by means of screw connection.

[0061] Please see Figures 1 to 3 In some embodiments, the frame 1 includes a lifting mechanism 101 and a worktable 102. The lifting mechanism 101 includes a main structure 1011 and a lifting drive 1012 connected to the main structure 1011. The lifting drive 1012 has a lifting end that moves in the up-down direction. The worktable 102 is connected to the lifting end. The light detection component 2, the image acquisition component 3, and the defect marking component 4 are all located on the worktable 102.

[0062] The lifting mechanism 101's up-and-down adjustment function allows the worktable 102 to be flexibly adapted to different production line conveying paths. Regardless of changes in the height of the conveying rollers or the installation space of the sealing strip production line, the worktable 102 can be precisely adjusted to the matching position via the lifting drive 1012. This ensures that the receiving channel of the light detection component 2 and the limiting hole 5021 of the limiting component 5 are aligned with the sealing strip conveying trajectory, preventing obstruction of the sealing strip conveying or displacement of the detection position due to height deviation, and significantly improving the device's adaptability to different production lines.

[0063] Optionally, the lifting drive 1012 can be a pneumatic or hydraulic telescopic component, or it can be a drive structure formed by a motor and a lead screw.

[0064] Please see Figures 1 to 3 In some embodiments, the lifting mechanism 101 further includes a guide column 1013 connected to the main structure 1011, and the worktable 102 is slidably connected to the guide column 1013 in the vertical direction.

[0065] The guide column 1013 provides precise guidance and constraint for the vertical movement of the worktable 102, preventing lateral deviation and tilting of the worktable 102 during lifting due to uneven force or fluctuations in the output of the lifting drive 1012. This ensures that the worktable 102 always moves smoothly in the vertical direction, thereby guaranteeing that the light detection component 2, image acquisition component 3, defect marking component 4, etc., integrated on the worktable 102 always maintain a stable relative position. Simultaneously, when the worktable 102 stops lifting and maintains a fixed height, the guide column 1013 helps maintain the stability of the worktable 102, preventing positional displacement due to equipment vibration or minor external impacts, providing reliable structural support for continuous conveying and accurate detection of the sealing strip.

[0066] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for detecting the surface coating of a sealing strip, characterized in that, The device includes a frame (1), and a light detection component (2), an image acquisition component (3), and a defect marking component (4) sequentially distributed along the conveying direction on the frame (1). The image acquisition component (3) is communicatively or electrically connected to the defect marking component (4). The light detection component (2) is used to excite the fluorescence of the coating on the surface of the sealing strip. The image acquisition component (3) is used to acquire an image of the coating after it has been excited to fluorescence and to detect surface defects. When the image acquisition component (3) detects a defect in the coating of the sealing strip, the defect marking component (4) is used to mark the defect location on the sealing strip.

2. The detection device for the surface coating of the sealing strip as described in claim 1, characterized in that, The illumination detection component (2) includes: Mounting bracket (201), connected to the frame (1); and A light source (202) is connected to the mounting bracket (201). The light source (202) has an annular receiving channel for the sealing strip to pass through. The light source (202) is used to project ultraviolet light onto the sealing strip.

3. The detection device for the surface coating of the sealing strip as described in claim 1, characterized in that, The image acquisition component (3) includes: A mounting bracket (301) includes a frame body (3011) and an adjusting plate (3012) disposed on the frame body (3011). The frame body (3011) is connected to the machine frame (1). The adjusting plate (3012) is an annular component with a central hole forming a clearance area for accommodating a sealing strip. The adjusting plate (3012) is provided with an annular guide rail. The acquisition mechanism (302) includes a bracket (3021) and an acquisition device (3022) connected to the bracket (3021). The bracket (3021) is slidably connected to the guide rail, and the acquisition mechanism (302) has a fixing part fixed to a designated position on the bracket (3021).

4. The detection device for the surface coating of the sealing strip as described in claim 3, characterized in that, The acquisition mechanism (302) is provided in multiple ways, and the multiple acquisition mechanisms (302) are centrally symmetrically distributed on the adjustment disk (3012).

5. The detection device for the surface coating of the sealing strip as described in claim 3, characterized in that, The collector (3022) is slidably connected to the bracket (3021), and the collection mechanism (302) further includes a driver disposed on the bracket (3021), the driver controlling the collector (3022) to move radially along the adjustment disk (3012).

6. The detection device for the surface coating of the sealing strip as described in claim 1, characterized in that, The defect marking component (4) includes: A support frame (402) is connected to the frame (1); Marking element (403), slidably connected to the support frame (402), for forming a mark on the surface of the sealing strip; and A marker drive (401), connected to the marker (403), is used to control the marker (403) to slide along the support frame (402).

7. The detection device for the surface coating of the sealing strip as described in claim 1, characterized in that, The detection device for the surface coating of the sealing strip further includes a limiting component (5) disposed upstream and / or downstream of the light detection component (2), the limiting component (5) comprising: Guide frame (501); and The limiting member (502) is detachably connected to the guide frame (501). The limiting member (502) has a limiting hole (5021). The limiting hole (5021) is clearance-fitted with the sealing strip and is used to limit the insertion of the sealing strip.

8. The detection device for the surface coating of the sealing strip as described in claim 7, characterized in that, The limiting component (5) further includes a guiding mechanism disposed on the side of the guide frame (501) opposite to the light detection component (2), the guiding mechanism comprising: A guide bracket (505) is connected to the guide frame (501); The first guide (503) includes two first guide rods slidably connected to the guide bracket (505) along a first path; and The second guide (504) includes two second guide rods slidably connected to the guide bracket (505) along a second path. The first path is perpendicular to the second path. The two first guide rods and the two second guide rods enclose a guide channel. The limiting hole (5021) corresponds to the guide channel and is located downstream of the guide channel in the conveying direction.

9. The detection device for the surface coating of the sealing strip as described in claim 1, characterized in that, The rack (1) includes: A lifting mechanism (101) includes a main frame (1011) and a lifting drive (1012) connected to the main frame (1011), the lifting drive (1012) having a lifting end that moves in a vertical direction; and The worktable (102) is connected to the lifting end, and the light detection component (2), the image acquisition component (3) and the defect marking component (4) are all located on the worktable (102).

10. The detection device for the surface coating of the sealing strip as described in claim 9, characterized in that, The lifting mechanism (101) also includes a guide column (1013) connected to the main structure (1011), and the worktable (102) is slidably connected to the guide column (1013) in the vertical direction.

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