Labor protection appliance appearance defect detecting and sorting line

Abstract

The invention discloses a labor protection appliance appearance defect detection sorting line. The line comprises a vertical frame; the detection frame is arranged on the frame body of the vertical frame; the detection device is arranged on the inner side of the detection frame and comprises a first rolling shaft sliding frame and a second rolling shaft sliding frame, the first rolling shaft sliding frame and the second rolling shaft sliding frame are connected through a parallel frame, and rolling shaft sliding grooves are formed in the first rolling shaft sliding frame and the second rolling shaft sliding frame; the two sides of the camera frame are rotationally connected with two sets of rolling shafts respectively, and the rolling shafts in the same row are connected through connecting shafts; according to the labor protection appliance appearance defect detection sorting line, the transverse and longitudinal angles of the detection camera can be adjusted, it is ensured that the multi-directional appearance of a labor protection cap is covered, and the detection comprehensiveness is improved; after angle adjustment is completed by the detection camera, images of the labor protection caps are collected, defects are recognized, and automatic detection of appearance defects is achieved; when defective products are recognized, the control system triggers the defective product conveying-out device to complete sorting, qualified products are conveyed normally, and automatic separation of the defective products and the qualified products is achieved.

Description

Technical Field

[0001] This application relates to the technical field of labor protection product manufacturing, and in particular to a sorting line for detecting appearance defects in labor protection products. Background Technology

[0002] In existing technologies, inspection equipment for the appearance defects of personal protective equipment typically uses fixed-view cameras, which cannot comprehensively cover the multi-directional appearance of products such as safety helmets, easily leading to blind spots and affecting the accuracy of inspection results. Furthermore, the sorting process for defective products often relies on manual operation or simple mechanical structures, resulting in low automation and difficulty in achieving efficient and accurate separation of defective and qualified products, leading to low sorting efficiency and high labor costs. To address these shortcomings, this application utilizes an inspection camera with adjustable horizontal and vertical angles to achieve multi-directional appearance inspection, and through the linkage of a control system and a defective product output device, achieves automated sorting of defective products, effectively improving the comprehensiveness of inspection and sorting efficiency. Summary of the Invention

[0003] This application aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, one objective of this application is to provide a sorting line for detecting appearance defects in personal protective equipment (PPE). The detection camera can be adjusted in both horizontal and vertical directions to ensure coverage of the PPE from multiple angles, thereby improving the comprehensiveness of the detection. After the camera completes the angle adjustment, it acquires images of the PPE and identifies defects, thus achieving automated detection of appearance defects. When a defective product is detected, the control system triggers the defective product conveying device to complete the sorting, while qualified products are conveyed normally, achieving automatic separation of defective and qualified products.

[0005] To achieve the above objectives, the first aspect of this application provides a sorting line for detecting appearance defects in personal protective equipment, comprising: a stand; a detection frame, the detection frame being mounted on the frame of the stand; a detection device, the detection device being disposed inside the detection frame, comprising: a first roller slide and a second roller slide, the two being connected by a parallel frame, and both the first roller slide and the second roller slide having roller grooves; a camera frame, on both sides of which are rotatably connected two sets of rolling shafts, the rolling shafts in the same row being connected by a connecting shaft, the rolling shafts slidingly engaging with the roller grooves, the camera frame being slidably connected to the rolling shafts and the roller grooves; and a detection camera, the detection camera being mounted on... The camera frame includes a slot; a motor frame located on one side of the camera frame, with a movable motor inside the motor frame, the output end of which is connected to one of the rolling shafts; two sets of longitudinal shafts located on opposite sides of the parallel frame, the parallel frame being rotatably connected to the inside of the inspection frame via the longitudinal shafts; an infeed conveyor belt located on one side of the inspection frame for conveying work caps; a defective product conveyor belt located parallel to one side of the infeed conveyor belt; and a defective product ejection device located between the infeed conveyor belt and the defective product conveyor belt for pushing defective products.

[0006] According to the occupational safety product appearance defect detection and sorting line of the present application embodiment, the detection camera can be adjusted in both horizontal and vertical directions to ensure coverage of the appearance of the work hat from multiple angles and improve the comprehensiveness of the detection; after the detection camera completes the angle adjustment, it acquires images of the work hat and identifies defects, realizing the automated detection of appearance defects; when a defective product is identified, the control system triggers the defective product output device to complete the sorting, and qualified products are transported normally, realizing the automatic separation of defective products and qualified products.

[0007] In addition, the occupational safety product appearance defect detection and sorting line proposed in this application may also have the following additional technical features:

[0008] Furthermore, the roller groove is an arc-shaped track.

[0009] Furthermore, the feeding conveyor belt includes a conveyor belt frame, several sets of conveyor rollers, several sets of bidirectional drive wheels, and a drive belt. The several sets of conveyor rollers are rotatably connected to the inner side of the conveyor belt frame. One end of each set of conveyor rollers is connected to a set of bidirectional drive wheels. Adjacent bidirectional drive wheels are connected by the drive belt. One set of bidirectional drive wheels is connected to a drive motor.

[0010] Furthermore, the defective product conveying device includes a pusher, a pusher cylinder, and a pusher block. The pusher cylinder is installed on the pusher, and its output end is connected to the pusher block via a telescopic slide rod. The pushing direction of the pusher block is perpendicular to the transmission direction of the conveyor belt. A telescopic slide rod is also provided between the pusher and the pusher block.

[0011] Furthermore, the detection device also includes an upper light source and a lower light source, which are respectively disposed at the top and bottom of the camera frame, and the light-emitting surfaces of the upper light source and the lower light source are both tilted at an angle of °-° toward the lens of the detection camera.

[0012] Furthermore, the detection device also includes: two sets of side limit sensors, respectively disposed at both ends of the roller slide groove; multiple sets of intermediate sensors, disposed between the two sets of side sensors; and a stop block fixed to the top surface of the camera frame, the stop block being used in conjunction with the side limit sensors and the intermediate sensors.

[0013] Furthermore, both the top surfaces of the first roller slide and the second roller slide are provided with slide rails, and the side limit sensor and the middle sensor are slidably mounted on the slide rails and fixed by screwing.

[0014] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the structure of the labor protection product appearance defect detection and sorting line according to this application;

[0017] Figure 2 This is a schematic diagram of the detection device and detection frame in the occupational safety product appearance defect detection and sorting line according to this application;

[0018] Figure 3 This is a schematic diagram of the detection device and detection frame in the occupational safety product appearance defect detection and sorting line according to this application from another perspective;

[0019] Figure 4 This is a schematic diagram of the detection device in the occupational safety product appearance defect detection and sorting line according to this application;

[0020] Figure 5 This is a structural schematic diagram of the camera frame and connecting components in the occupational safety product appearance defect detection and sorting line according to this application;

[0021] Figure 6 This is a schematic diagram of the camera frame and connecting components in the occupational safety product appearance defect detection and sorting line according to this application from another perspective.

[0022] Figure 7 This is a schematic diagram of the conveyor belt structure in the labor protection product appearance defect detection and sorting line according to this application;

[0023] Figure 8 This is a schematic diagram of the defective product conveying device in the occupational safety product appearance defect detection and sorting line according to this application.

[0024] As shown in the figure: 1. Frame erection;

[0025] 2. Detection frame; 201. First roller slide; 202. Second roller slide; 203. Parallel frame; 204. Roller slide groove; 205. Rolling shaft; 206. Connecting shaft; 207. Camera frame; 208. Detection camera; 209. Upper light source; 210. Lower light source; 211. Motor frame; 212. Moving motor; 213. Longitudinal motor; 214. Longitudinal shaft; 215. Intermediate sensor; 216. Stop; 217. Side limit sensor;

[0026] 3. Detection device;

[0027] 4. Feeding onto the conveyor belt; 401. Conveyor belt frame; 402. Conveyor roller; 403. Two-way drive wheel; 404. Drive belt;

[0028] 5. Defective product conveyor belt;

[0029] 6. Defective product conveying device; 601. Push frame; 602. Push cylinder; 603. Telescopic slide bar; 604. Push cap block; 605. Photoelectric sensor. Detailed Implementation

[0030] Embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. Rather, embodiments of this application include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0031] The following describes, with reference to the accompanying drawings, a labor protection product appearance defect detection and sorting line according to an embodiment of this application.

[0032] like Figure 1-8 As shown in the embodiment of this application, the occupational safety product appearance defect detection and sorting line includes:

[0033] Frame 1.

[0034] Inspection frame 2 is installed on the frame of upright frame 1.

[0035] The detection device 3 is disposed inside the detection frame 2 and includes:

[0036] The first roller slide 201 and the second roller slide 202 are connected by a bracket 203, and both the first roller slide 201 and the second roller slide 202 are provided with roller grooves 204.

[0037] The camera mount 207 has two sets of rolling shafts 205 rotatably connected to its two sides. The rolling shafts 205 in the same row are connected by a connecting shaft 206. The rolling shafts 205 are slidably engaged with the rolling grooves 204. The camera mount 207 is slidably connected to the rolling shafts 205 and the rolling grooves 204.

[0038] The inspection camera 208 is installed in the slot of the camera mount 207.

[0039] The motor frame 211 is located on one side of the camera frame 207. A movable motor 212 is installed inside the motor frame 211. The output end of the movable motor 212 is connected to one of the sets of rolling shafts 205.

[0040] Two sets of longitudinal shafts 214 are respectively set on both sides of the parallel frame 203, and the parallel frame 203 is rotatably connected to the inner side of the detection frame 2 through the longitudinal shafts 214.

[0041] The conveyor belt 4 is placed on one side of the inspection frame 2 and is used to transport work caps.

[0042] Defective product conveyor belt 5 is arranged parallel to one side of the feed conveyor belt 4.

[0043] The defective product conveying device 6 is located between the feed conveyor belt 4 and the defective product conveyor belt 5 and is used to push defective products.

[0044] Specifically, the device testing process is as follows: Labor protection equipment transportation: Labor protection hats, such as safety helmets, are carried by the feeding conveyor belt 4 and move along the transmission direction on one side of the testing frame 2 to enter the testing area.

[0045] The conveyor belt 4 is fed into the conveyor belt, which drives the two-way transmission wheel 403 and the transmission belt 404 through the transmission motor, thereby driving the transmission roller 402 to rotate and realize the continuous conveying of the work hat.

[0046] Camera angle adjustment: Horizontal arc adjustment: The moving motor 212 is started, and through the transmission mechanism such as gears and chains, it drives one of the rolling shafts 205 to slide in an arc within the rolling grooves 204 of the first rolling slide 201 and the second rolling slide 202.

[0047] The parallel roller 205 is linked with the connecting shaft 206, which drives the camera holder 207 to move laterally along the arc track of the roller slide 204, thereby adjusting the lateral shooting angle of the detection camera 208, such as swinging left and right, to cover the side appearance of the work hat.

[0048] Longitudinal angle adjustment: The frame 203 rotates around the inner side of the detection frame 2 via the longitudinal shafts 214 on both sides, causing the first roller slide 201 and the second roller slide 202 to tilt as a whole, so that the camera frame 207 and the detection camera 208 can be adjusted in longitudinal angle, such as tilting up and down, to meet the detection needs of the top or bottom of the work cap.

[0049] Appearance defect detection: After the inspection camera 208 completes the horizontal and vertical angle adjustment with the camera frame 207, it collects images of the work hats on the conveyor belt and identifies appearance defects such as cracks, stains, and dimensional deviations through a preset algorithm.

[0050] Defective Product Sorting: When the inspection camera 208 detects a defective product, the control system triggers the defective product conveyor 6: the push cylinder 602 drives the telescopic slide bar 603, which in turn causes the push cap block 604 to extend in a direction perpendicular to the feed conveyor belt 4, pushing the defective product from the feed conveyor belt 4 to the parallel defective product conveyor belt 5, thus completing the sorting. Qualified products continue to be conveyed to the next process by the feed conveyor belt 4.

[0051] Adjustment mechanism reset: After the detection and sorting actions are completed, the moving motor 212 drives the rolling shaft 205 to reset to the initial position, and the longitudinal shaft 214 drives the parallel frame 203 to return to the center, waiting for the next safety cap to enter the detection area.

[0052] By using the sliding fit of the "rolling shaft-rolling groove" and the rotational connection of the "longitudinal shaft-parallel frame", the inspection camera 208 can achieve lateral arc sliding and longitudinal angle tilting, solving the blind spot problem of traditional fixed-view inspection and improving the comprehensiveness of appearance defect identification.

[0053] In one embodiment of this application, the roller groove 204 is an arc-shaped track.

[0054] Specifically, the arc-shaped track design allows the shooting angle of the inspection camera 208 to be continuously adjusted within a certain range, solving the problem that traditional straight tracks can only move in a straight line and have a single inspection angle. It can cover the full surface inspection of curved parts of personal protective equipment such as the sides and brims of safety helmets, eliminating blind spots in the inspection.

[0055] Furthermore, in this embodiment, the arc-shaped sliding trajectory can be designed to match the curved shape of the personal protective equipment, such as the arc contour of a safety helmet, so that the detection camera 208 maintains a relatively stable distance and angle with the object being measured during movement, avoiding image distortion caused by sudden changes in viewing angle and improving the accuracy of defect identification.

[0056] In one embodiment of this application, the feed conveyor belt 4 includes a conveyor belt frame 401, several sets of conveyor rollers 402, several sets of two-way drive wheels 403, and a drive belt 404. The several sets of conveyor rollers 402 are rotatably connected to the inner side of the conveyor belt frame 401. One end of each set of conveyor rollers 402 is connected to a set of two-way drive wheels 403. Adjacent two-way drive wheels 403 are connected by a drive belt 404. One set of two-way drive wheels 403 is connected to a drive motor.

[0057] Specifically, the conveyor belt 4 serves as a material transport unit, consisting of a conveyor belt frame 401, conveyor rollers 402, two-way drive wheels 403, and a transmission belt 404. A drive motor drives the first two-way drive wheels 403, which in turn, via the transmission belt 404, link with adjacent drive wheels, causing the conveyor rollers 402 to rotate and transport the safety caps. Multiple sets of conveyor rollers evenly support the transmission belt, ensuring stable material transport.

[0058] In one embodiment of this application, the defective product conveying device 6 includes a pusher 601, a pusher cylinder 602, and a pusher block 604. The pusher cylinder 602 is mounted on the pusher 601, and its output end is connected to the pusher block 604 via a telescopic slide rod 603. The pushing direction of the pusher block 604 is perpendicular to the transmission direction of the conveyor belt 4. A telescopic slide rod 603 is also provided between the pusher 601 and the pusher block 604.

[0059] Specifically, the pusher block 604 uses a lateral movement perpendicular to the conveyor belt's transmission direction to precisely push detected defective products from the input conveyor belt to the defective product conveyor belt. The front end of the pusher block is adapted to the shape of the personal protective equipment and uses an elastic material to prevent damage. The telescopic slide bar and the pusher guide structure work together to ensure accurate pushing trajectory. The pneumatic drive mode has a fast response speed with an action time of ≤0.3 seconds, enabling signal linkage with the detection device and automated sorting, combining high efficiency and product protection.

[0060] In one embodiment of this application, the detection device 3 further includes an upper light source 209 and a lower light source 210, which are respectively disposed at the top and bottom of the camera holder 207, and the light-emitting surfaces of the upper light source 209 and the lower light source 210 are both tilted 15°-30° toward the lens direction of the detection camera 208.

[0061] Specifically, the multi-angle tilted lighting design effectively reduces surface reflections and shadows on the tested personal protective equipment, improving image acquisition quality. The light source moves and adjusts synchronously with the camera mount, ensuring dynamic matching between the lighting angle and the camera's shooting angle. This provides uniform and stable lighting conditions for appearance defect detection, making it particularly suitable for high-contrast imaging of complex structures such as curved surfaces and edges on safety helmets, significantly improving the accuracy of identifying defects such as cracks and dents.

[0062] In one embodiment of this application, the detection device 3 further includes: two sets of side limit sensors 217, respectively disposed at both ends of the roller slide groove 204; multiple sets of intermediate sensors 215, disposed between the two sets of side sensors 217; and a stop block 216, fixed to the top surface of the camera holder 207, which works in conjunction with the side limit sensors 217 and the intermediate sensors 215.

[0063] Specifically, the detection area is expanded: by sliding the side limit sensor 217 to the outside of the roller slide 204, the swing angle of the camera frame 207 can be expanded from ±30° to ±45°, covering the detection needs of larger-sized personal protective equipment, such as expanding from safety helmets to protective face shields.

[0064] Optimization of detection accuracy: By finely adjusting the intermediate sensor 215 towards the center of the roller slide 204, the initial position of the detection camera 208 can be calibrated, so that the center of the lens is aligned with the key detection area of ​​the object being measured, such as the top of a safety helmet, thereby improving the accuracy of defect identification.

[0065] Multi-specification adaptation: By pre-setting multiple sets of sensor position parameters, such as the coordinates of limit sensors corresponding to different specifications of labor protection products, the detection mode can be quickly switched, realizing one machine for multiple uses and meeting the flexibility requirements of the production line.

[0066] In one embodiment of this application, the top surfaces of the first roller slide 201 and the second roller slide 202 are both provided with slide rails, and the side limit sensor 217 and the middle sensor 215 are slidably disposed on the track of the slide rail and fixed by screwing.

[0067] By adjusting the position of the sensor, the detection position of the camera can be adjusted to adapt to the detection of different personal protective equipment.

[0068] In actual testing, the transportation of personal protective equipment (PPE) is as follows: PPE helmets, such as safety helmets, are carried by the feeder conveyor belt 4 and move along the transmission direction on one side of the testing frame 2 into the testing area.

[0069] The conveyor belt 4 is fed into the conveyor belt, which drives the two-way transmission wheel 403 and the transmission belt 404 through the transmission motor, thereby driving the transmission roller 402 to rotate and realize the continuous conveying of the work hat.

[0070] Camera angle adjustment: Horizontal arc adjustment: The moving motor 212 is started, and through the transmission mechanism such as gears and chains, it drives one of the rolling shafts 205 to slide in an arc within the rolling grooves 204 of the first rolling slide 201 and the second rolling slide 202.

[0071] The parallel roller 205 is linked with the connecting shaft 206, which drives the camera holder 207 to move laterally along the arc track of the roller slide 204, thereby adjusting the lateral shooting angle of the detection camera 208, such as swinging left and right, to cover the side appearance of the work hat.

[0072] Longitudinal angle adjustment: The frame 203 rotates around the inner side of the detection frame 2 via the longitudinal shafts 214 on both sides, causing the first roller slide 201 and the second roller slide 202 to tilt as a whole, so that the camera frame 207 and the detection camera 208 can be adjusted in longitudinal angle, such as tilting up and down, to meet the detection needs of the top or bottom of the work cap.

[0073] Appearance defect detection: After the inspection camera 208 completes the horizontal and vertical angle adjustment with the camera frame 207, it collects images of the work hats on the conveyor belt and identifies appearance defects such as cracks, stains, and dimensional deviations through a preset algorithm.

[0074] Defective Product Sorting: When the inspection camera 208 detects a defective product, the control system triggers the defective product conveyor 6: the push cylinder 602 drives the telescopic slide bar 603, which in turn causes the push cap block 604 to extend in a direction perpendicular to the feed conveyor belt 4, pushing the defective product from the feed conveyor belt 4 to the parallel defective product conveyor belt 5, thus completing the sorting. Qualified products continue to be conveyed to the next process by the feed conveyor belt 4.

[0075] Adjustment mechanism reset: After the detection and sorting actions are completed, the moving motor 212 drives the rolling shaft 205 to reset to the initial position, and the longitudinal shaft 214 drives the parallel frame 203 to return to the center, waiting for the next safety cap to enter the detection area.

[0076] In summary, the occupational safety product appearance defect detection and sorting line of this application embodiment features an inspection camera that can be adjusted horizontally and vertically to ensure comprehensive coverage of the work cap's appearance from multiple angles, thus improving the overall inspection coverage. After the inspection camera completes the angle adjustment, it acquires images of the work cap and identifies defects, achieving automated detection of appearance defects. When a defective product is identified, the control system triggers the defective product conveying device to complete the sorting, while qualified products are conveyed normally, achieving automatic separation of defective and qualified products.

[0077] In the description of this specification, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A sorting and inspection line for appearance defects of labor protection products, characterized in that, include: Erecting the frame; A testing frame, which is mounted on the frame of the upright; A detection device, disposed inside the detection frame, comprising: The first roller slide and the second roller slide are connected by a parallel frame, and both the first roller slide and the second roller slide are provided with roller grooves; A camera frame has two sets of rolling shafts rotatably connected to its two sides. The rolling shafts in the same row are connected by a connecting shaft. The rolling shafts are slidably engaged with the rolling shaft grooves. The camera frame is slidably connected to the rolling shafts and the rolling shaft grooves. A detection camera, which is installed in the slot of the camera mount; A motor frame is provided on one side of the camera frame, and a movable motor is provided inside the motor frame. The output end of the movable motor is connected to one of the sets of rolling shafts. Two sets of longitudinal axes are respectively arranged on both sides of the parallel frame, and the parallel frame is rotatably connected to the inner side of the detection frame through the longitudinal axes; The safety caps are fed into a conveyor belt, which is located on one side of the inspection frame. A defective product conveyor belt, wherein the defective product conveyor belt is arranged parallel to one side of the feed conveyor belt; A defective product conveying device is disposed between the feeding conveyor belt and the defective product conveyor belt for pushing defective products.

2. The labor protection product appearance defect detection and sorting line according to claim 1, characterized in that: The roller groove is an arc-shaped track.

3. The labor protection product appearance defect detection and sorting line according to claim 1, characterized in that: The feeding conveyor belt includes a conveyor belt frame, several sets of conveyor rollers, several sets of bidirectional drive wheels, and a drive belt. The several sets of conveyor rollers are rotatably connected to the inner side of the conveyor belt frame. One end of each set of conveyor rollers is connected to a set of bidirectional drive wheels. Adjacent bidirectional drive wheels are connected by the drive belt. One set of bidirectional drive wheels is connected to a drive motor.

4. The labor protection product appearance defect detection and sorting line according to claim 1, characterized in that: The defective product conveying device includes a pusher, a pusher cylinder, and a pusher block. The pusher cylinder is installed on the pusher, and its output end is connected to the pusher block via a telescopic slide rod. The pushing direction of the pusher block is perpendicular to the transmission direction of the conveyor belt. A telescopic slide rod is also provided between the pusher and the pusher block.

5. The labor protection product appearance defect detection and sorting line according to claim 1, characterized in that: The detection device further includes an upper light source and a lower light source, which are respectively disposed at the top and bottom of the camera frame, and the light-emitting surfaces of the upper light source and the lower light source are both tilted towards the lens of the detection camera at a 90°-100° angle.

6. The labor protection product appearance defect detection and sorting line according to claim 1, characterized in that: The detection device further includes: Two sets of side limit sensors are respectively installed at both ends of the roller groove; The intermediate sensors, in multiple groups, are positioned between the two groups of the side sensors; A stop block is fixed to the top surface of the camera mount, and the stop block is used in conjunction with the side limit sensor and the middle sensor.

7. The labor protection product appearance defect detection and sorting line according to claim 6, characterized in that: The top surfaces of both the first and second roller slides are provided with slide rails. The side limit sensor and the middle sensor are slidably mounted on the slide rails and fixed by screwing.

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