Non-woven fabric appearance detection equipment

Abstract

The utility model discloses non-woven fabric appearance detection equipment, and relates to the technical field of non-woven fabric detection, the non-woven fabric appearance detection equipment comprises a conveying device and a visual detection device, the conveying device comprises a workbench, an unwinding mechanism and a winding mechanism, the unwinding mechanism and the winding mechanism are respectively positioned on two sides of the workbench, an assembly space is arranged at the central position of the workbench, and the visual detection device is arranged in the assembly space. The visual detection device is fixedly connected in the assembly space, and two sides of the workbench respectively form a first side corresponding to the unwinding mechanism and a second side corresponding to the winding mechanism; the visual detection device comprises fixed side plates which are oppositely arranged, a box body connected between the two fixed side plates, a detection unit integrated in the box body, and a feeding conveying roller and a conveying conveying roller which are rotationally connected between the two fixed side plates through rotating shafts; the first side and the second side of the workbench are each provided with a first transmission roller assembly corresponding to the feeding conveying roller. And efficient automatic continuous production is realized.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric testing technology, specifically a nonwoven fabric appearance testing device. Background Technology

[0002] In modern industrial production systems, nonwoven fabrics, as a widely used basic material, occupy an important position in many fields such as medical and hygiene products, packaging, and garment manufacturing. As various industries place increasing emphasis on product quality, the control over the appearance quality of nonwoven fabrics is becoming more and more stringent.

[0003] In current nonwoven fabric production, most companies still rely on manual inspection for appearance. However, manual inspection has significant drawbacks. First, its efficiency is ill-suited to the demands of large-scale industrial production. In high-speed modern production lines, manual inspection is far too slow, easily leading to product backlog, slowing down the overall production schedule, and impacting the company's profitability. Second, manual inspection is heavily influenced by human factors. Prolonged, repetitive inspection work can cause physical and mental fatigue for inspectors, making it difficult to concentrate and ensuring consistency in results. Furthermore, differences in experience and judgment standards among inspectors can lead to inconsistent results, resulting in significant fluctuations in product quality and making it difficult to maintain stable quality levels.

[0004] Furthermore, although some existing testing equipment has incorporated automation technology, its integration with the production line is inadequate. These devices cannot smoothly integrate into the production process, often experiencing bottlenecks and delays during the transition of nonwoven fabrics from production to testing, thus hindering efficient automated continuous production and increasing the company's time and labor costs.

[0005] Therefore, it is urgent to develop a nonwoven fabric appearance inspection device that can work closely with the production line and overcome the drawbacks of manual inspection. This is precisely the direction that this invention is striving to overcome. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0007] A nonwoven fabric appearance inspection device includes a conveying device and a vision inspection device. The conveying device includes a worktable and an unwinding mechanism and a winding mechanism located on both sides of the worktable. An assembly space is provided in the center of the worktable. The vision inspection device is fixedly connected in the assembly space, and the two sides of the worktable form a first side corresponding to the unwinding mechanism and a second side corresponding to the winding mechanism, respectively.

[0008] The visual inspection device includes fixed side plates arranged opposite to each other, a housing connected between the two fixed side plates, an inspection unit integrated into the housing, and a feed conveyor roller and a feeding conveyor roller rotatably connected between the two fixed side plates via a rotating shaft. A first transmission roller assembly corresponding to the feed conveyor roller and a second transmission roller assembly corresponding to the feeding conveyor roller are respectively installed on the first and second sides of the worktable.

[0009] The feeding conveyor roller and the feeding conveyor roller are spaced apart to form a shooting area, and the shooting area is located below the box. The detection unit includes a light source module located in the shooting area and a camera module located directly above the shooting area.

[0010] As a further embodiment of this utility model: the box body includes a frame fixedly connected between two fixed side plates, and a light shield fixedly connected to the periphery and upper end of the frame. The camera module is connected to the upper end of the frame, and the light source module is connected to the lower end of the frame and located below the feed conveyor roller and the feeding conveyor roller.

[0011] The frame has an opening at its lower end, allowing the camera module to capture images of the shooting area through the opening.

[0012] As a further embodiment of this utility model: the light source module includes a first mounting bracket connected to the frame and an LED light connected to the first mounting bracket. The first mounting bracket extends downward toward the frame so that the bottom end of the first mounting bracket is lower than the feed conveyor roller and the feeding conveyor roller. The LED light is connected to the bottom end of the first mounting bracket.

[0013] The position of the first mounting bracket on the frame is adjustable.

[0014] As a further embodiment of this utility model: the camera module includes a second mounting bracket connected to the frame and a camera connected to the second mounting bracket, wherein the position of the second mounting bracket on the frame is adjustable.

[0015] As a further embodiment of this utility model: a window is provided on the fixed side plate, and a baffle is hingedly installed at the window position to open or close the window through the baffle;

[0016] The window position corresponds to the shooting area.

[0017] As a further embodiment of this utility model: the fixed side plate is connected to the support of the workbench to form an integral unit.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1) This equipment can adapt to high-speed modern production lines. Compared with manual inspection, it greatly improves the inspection speed, avoids product backlog, speeds up the production process, and improves the production efficiency of enterprises.

[0020] 2) It overcomes the problem of human factors seriously interfering with manual testing. It will not cause inconsistent test results due to the physical and mental fatigue of the testers, lack of concentration, or differences in experience and judgment standards. It can ensure the consistency of testing and maintain a stable product quality level.

[0021] 3) Compared with some existing testing equipment, this equipment can work closely with the production line and smoothly integrate into the production process, avoiding blockages and delays when nonwoven fabrics transition from the production stage to the testing stage. It achieves efficient automated continuous production and reduces the company's time and labor costs.

[0022] 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

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the conveying device in this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of visual inspection in this utility model;

[0027] Figure 4 yes Figure 3 A schematic diagram of the structure after removing the light-shielding plate and baffle;

[0028] Figure 5 This is a schematic diagram of the structure of the light source module and camera module on the frame in this utility model.

[0029] The reference numerals and names in the figure are as follows:

[0030] 1. Conveying device; 2. Vision inspection device; 3. Workbench; 4. Unwinding mechanism; 5. Rewinding mechanism; 6. Assembly space; 7. First side; 8. Second side; 9. Fixed side plate; 10. Box body; 11. Feed conveyor roller; 12. Feed conveyor roller; 13. First drive roller assembly; 14. Second drive roller assembly; 15. Shooting area; 16. Light source module; 17. Camera module; 18. Frame; 19. Light shield; 20. First mounting bracket; 21. LED light; 22. Second mounting bracket; 23. Camera; 24. Window; 25. Baffle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-5 In this embodiment of the present invention, a nonwoven fabric appearance inspection device includes a conveying device 1 and a vision inspection device 2. The conveying device 1 includes a workbench 3 and an unwinding mechanism 4 and a winding mechanism 5 located on both sides of the workbench 3. An assembly space 6 is provided in the center of the workbench 3. The vision inspection device 2 is fixedly connected in the assembly space 6, and the two sides of the workbench 3 form a first side 7 corresponding to the unwinding mechanism 4 and a second side 8 corresponding to the winding mechanism 5, respectively.

[0033] The visual inspection device 2 includes fixed side plates 9 arranged opposite to each other, a housing 10 connected between the two fixed side plates 9, an inspection unit integrated into the housing 10, and a feed conveyor roller 11 and a feeding conveyor roller 12 rotatably connected between the two fixed side plates 9 via a rotating shaft. The first side 7 and the second side 8 of the workbench 3 are respectively equipped with a first transmission roller assembly 13 corresponding to the feed conveyor roller 11 and a second transmission roller assembly 14 corresponding to the feeding conveyor roller 12.

[0034] The feeding conveyor roller 11 and the feeding conveyor roller 12 are spaced apart to form a shooting area 15, and the shooting area 15 is located below the housing 10. The detection unit includes a light source module 16 located in the shooting area 15 and a camera module 17 located directly above the shooting area 15.

[0035] In the nonwoven fabric appearance inspection equipment, the conveying device 1 plays a key role in material transfer. The workbench 3 is equipped with an unwinding mechanism 4 and a winding mechanism 5 on both sides. The unwinding mechanism 4 is responsible for unwinding the rolled nonwoven fabric and continuously outputting it. It releases the nonwoven fabric at a stable speed through an internal power drive device (such as a motor). At the same time, the winding mechanism 5 winds up and collects the nonwoven fabric that has been inspected by the vision inspection device 2 on the other side. The vision inspection device 2 is placed in the assembly space 6 in the center of the workbench 3. The nonwoven fabric released from the unwinding mechanism 4 will pass smoothly through the vision inspection device 2 along a specific track. This process provides a stable material flow path for subsequent inspection work, ensuring that the nonwoven fabric can be inspected in a uniform and continuous state.

[0036] The main structure of the visual inspection device 2 consists of a fixed side plate 9 and a housing 10. The fixed side plate 9 provides a stable support frame 18 for the entire inspection device. The feeding conveyor roller 11 and the feeding conveyor roller 12 are flexibly connected between the fixed side plate 9 through a rotating shaft, and the two are spaced a certain distance apart. This spaced area is the shooting area 15 specifically for the non-woven fabric to pass through. When the non-woven fabric enters the shooting area 15 under the drive of the conveying device 1, it enters the key step of visual inspection.

[0037] The detection unit is the core part of the visual inspection device 2. The light source module 16 is located below or to the side of the shooting area 15. The light emitted by it illuminates the surface of the non-woven fabric evenly, ensuring that every detail of the non-woven fabric can be clearly illuminated. The camera module 17 is installed directly above the shooting area 15. It is equipped with a high-resolution image sensor and can capture images of the moving non-woven fabric at an extremely high frame rate. As the non-woven fabric quickly passes through the shooting area 15, the camera module 17 quickly captures its appearance image and transmits these image data to the back-end image processing system in real time for subsequent appearance defect analysis and judgment.

[0038] The first transmission roller assembly 13 and the second transmission roller assembly 14 on both sides of the workbench 3 cooperate with the feed conveyor roller 11 and the feeding conveyor roller 12 respectively. In one embodiment, the first transmission roller assembly 13 can maintain the same speed as the feed conveyor roller 11 through synchronous belt or other transmission methods to ensure that the nonwoven fabric is at a stable speed when entering the shooting area 15 and avoid jamming or stretching deformation. Similarly, the second transmission roller assembly 14 works in coordination with the feeding conveyor roller 12 to ensure that the nonwoven fabric can be smoothly conveyed to the winding mechanism 5 after leaving the shooting area 15, thus ensuring the continuity and stability of the entire detection process.

[0039] In summary, this equipment is adaptable to high-speed modern production lines. Compared to manual inspection, it significantly improves inspection speed, avoids product backlog, accelerates production progress, and enhances enterprise production efficiency. It overcomes the problem of human error in manual inspection, preventing inconsistent results due to operator fatigue, lack of concentration, or differences in experience and judgment standards, ensuring consistent inspection and maintaining stable product quality. Compared to some existing inspection equipment, this equipment can work closely with the production line, seamlessly integrating into the production process. It avoids delays and bottlenecks during the transition from production to inspection of nonwoven fabrics, achieving efficient automated continuous production and reducing enterprise time and labor costs.

[0040] In this embodiment of the utility model, the housing 10 includes a frame 18 fixedly connected between two fixed side plates 9, and a light shield 19 fixedly connected to the periphery and upper end of the frame 18. The camera module 17 is connected to the upper end of the frame 18, and the light source module 16 is connected to the lower end of the frame 18 and located below the feeding conveyor roller 11 and the feeding conveyor roller 12.

[0041] The frame 18 has an opening at its lower end, allowing the camera module 17 to capture images of the shooting area 15 through the opening.

[0042] The frame 18 is fixedly connected between the two fixed side plates 9, providing a stable support structure for the entire housing 10. It not only supports the camera module 17 and the light source module 16, but also works in conjunction with the fixed side plates 9 to ensure the stability of the entire vision inspection device 2. During the operation of the equipment, the frame 18 can withstand the weight of each component and the vibration caused by the non-woven fabric conveying, ensuring that each module is always in the correct working position.

[0043] The light shield 19 is fixedly connected to the perimeter and upper end of the frame 18. Its main function is to block external light from interfering with the detection process. In the non-woven fabric appearance inspection, the light emitted by the light source module 16 needs to be evenly and stably irradiated on the non-woven fabric so that the camera module 17 can accurately capture its appearance image. Interference from external light may cause problems such as reflection and shadow in the image, affecting the detection results. The light shield 19 can effectively shield external light and create a relatively closed and stable lighting environment for the inspection.

[0044] The camera module 17 is connected to the upper end of the frame 18, and the light source module 16 is connected to the lower end of the frame 18 and located below the feed conveyor roller 11 and the feeding conveyor roller 12. This layout allows the light source to evenly illuminate the non-woven fabric in the shooting area 15 from bottom to top, avoiding blind spots in the lighting. The camera module 17 is located directly above, enabling it to vertically photograph the non-woven fabric and obtain the clearest and most accurate image information. The opening at the lower end of the frame 18 provides a channel for the camera 23 to shoot, ensuring that the camera 23 can shoot the shooting area 15 without obstruction.

[0045] In this embodiment of the present invention, the light source module 16 includes a first mounting bracket 20 connected to the frame 18 and an LED light 21 connected to the first mounting bracket 20. The first mounting bracket 20 extends downward toward the frame 18 so that the bottom end of the first mounting bracket 20 is lower than the feed conveyor roller 11 and the feeding conveyor roller 12. The LED light 21 is connected to the bottom end of the first mounting bracket 20.

[0046] The position of the first mounting bracket 20 on the frame 18 is adjustable.

[0047] The first mounting bracket 20 is connected to the frame 18 and extends downwards from the frame 18. Its bottom end is lower than the feed conveyor roller 11 and the feeding conveyor roller 12. This structural design ensures that the LED light 21 installed at its bottom end is in a suitable position to illuminate the non-woven fabric from below, achieving unobstructed light coverage. Because it is lower than the feed conveyor roller 11 and the feeding conveyor roller 12, the light emitted by the LED light 21 can directly act on the non-woven fabric in the shooting area 15, avoiding the feed conveyor roller 11 and the feeding conveyor roller 12 from blocking the light and ensuring that the light evenly illuminates the surface of the non-woven fabric.

[0048] The position of the first mounting bracket 20 on the frame 18 is adjustable. This is to meet the testing requirements of non-woven fabrics of different specifications. Different types of non-woven fabrics have differences in thickness, material, color, etc., and their light reflection and absorption characteristics are also different. By adjusting the position of the first mounting bracket 20, the distance and angle between the LED light 21 and the non-woven fabric can be changed, thereby adjusting the intensity and angle of the light so that the light can shine on the non-woven fabric in the best state, ensuring that the camera module 17 can obtain clear images.

[0049] Specifically, a set of elongated adjustment holes are set on the frame 18 along the vertical direction. The length direction of the adjustment holes is perpendicular to the nonwoven fabric conveying direction. The first mounting bracket 20 passes through the adjustment holes with bolts and is then tightened with nuts. When it is necessary to adjust the position of the first mounting bracket 20, the nuts are loosened, the first mounting bracket 20 is moved up and down along the adjustment holes to the appropriate position, and then the nuts are tightened again to fix it.

[0050] In this embodiment of the present invention, the camera module 17 includes a second mounting bracket 22 connected to the frame 18 and a camera 23 connected to the second mounting bracket 22, wherein the position of the second mounting bracket 22 on the frame 18 is adjustable.

[0051] The second mounting bracket 22 is connected to the frame 18. Its adjustable position design is based on the diverse needs of nonwoven fabric inspection. In actual production, different specifications of nonwoven fabrics vary in thickness, texture, and production speed. This requires the camera 23 to adjust the shooting position and angle according to the specific situation in order to obtain the clearest and most accurate image. For example, for nonwoven fabrics with finer textures, the camera 23 needs to shoot at a closer distance to capture subtle defects; while for nonwoven fabrics on high-speed production lines, the camera 23 needs to adjust the angle to ensure clear imaging even during rapid movement.

[0052] Specifically, a set of horizontal and vertical slide rails are installed on the frame 18. The second mounting bracket 22 is connected to the slide rails via a slider. The slider is equipped with a locking device. When the position needs to be adjusted, the locking device is released, and the second mounting bracket 22 can be moved horizontally or vertically along the slide rails. Horizontal movement can adjust the relative position of the camera 23 and the nonwoven fabric conveying direction to ensure that the camera 23 can capture different areas of the nonwoven fabric. Vertical movement can change the distance between the camera 23 and the nonwoven fabric, thereby adjusting the focal length and field of view. In this way, the camera 23 can be accurately positioned to the optimal shooting position.

[0053] In this embodiment of the utility model, a window 24 is provided on the fixed side plate 9, and a baffle 25 is hingedly installed at the position of the window 24 so as to open or close the window 24 through the baffle 25.

[0054] The position of window 24 corresponds to the shooting area 15.

[0055] A window 24 corresponding to the shooting area 15 is opened on the fixed side plate 9, and a baffle 25 is hinged and installed. This is mainly to meet the needs of the equipment in different usage scenarios. The window 24 provides a channel to directly observe the shooting area 15. During the equipment debugging stage, technicians can open the baffle 25 to directly observe the running status of the non-woven fabric in the shooting area 15, such as whether there are problems such as deviation or wrinkles, so as to facilitate timely adjustment of equipment parameters.

[0056] In one embodiment, the window 24 and the baffle 25 are relatively large, so that when the equipment is maintained, opening the baffle 25 can make it easier to access the components in the shooting area 15, such as cleaning and repairing the feed conveyor roller 11 and the feeding conveyor roller 12.

[0057] In one embodiment, the window 24 and the baffle 25 are not only designed to meet the needs of equipment debugging and maintenance, but also to take into account the handling process when abnormalities are detected. When the equipment detection system detects that there are defects in the non-woven fabric, the alarm device is triggered and the production line stops running. At this time, the window 24 provides a direct passage to the shooting area 15. The staff can open the baffle 25 and quickly locate the defective position of the non-woven fabric and mark it (so that the defective position can be located after winding). This design closely integrates equipment detection, abnormal handling and manual intervention, and optimizes the overall production process.

[0058] The baffle 25 is hinged to the fixed side plate 9. This connection method allows the baffle 25 to open and close flexibly. The hinge point provides a rotation axis. Through simple rotation, the baffle 25 can open and close the window 24. Moreover, the hinged installation structure is simple and stable. It is not easy to malfunction during long-term frequent opening and closing, thus ensuring the operability of the window 24.

[0059] In this embodiment of the utility model, the fixed side plate 9 is connected to the support of the workbench 3 to form an integral unit.

[0060] The fixed side plate 9 is connected to the support of the workbench 3 to form an integral unit, mainly based on the consideration of improving the overall stability and structural rationality of the equipment, while simplifying the installation process of the equipment.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A nonwoven fabric appearance inspection device, characterized in that, It includes a conveying device and a vision inspection device. The conveying device includes a worktable, and an unwinding mechanism and a rewinding mechanism located on both sides of the worktable. An assembly space is provided in the center of the worktable. The vision inspection device is fixedly connected in the assembly space, and the two sides of the worktable form a first side corresponding to the unwinding mechanism and a second side corresponding to the rewinding mechanism, respectively. The visual inspection device includes fixed side plates arranged opposite to each other, a housing connected between the two fixed side plates, an inspection unit integrated into the housing, and a feed conveyor roller and a feeding conveyor roller rotatably connected between the two fixed side plates via a rotating shaft. A first transmission roller assembly corresponding to the feed conveyor roller and a second transmission roller assembly corresponding to the feeding conveyor roller are respectively installed on the first and second sides of the worktable. The feeding conveyor roller and the feeding conveyor roller are spaced apart to form a shooting area, and the shooting area is located below the box. The detection unit includes a light source module located in the shooting area and a camera module located directly above the shooting area.

2. The nonwoven fabric appearance inspection device according to claim 1, characterized in that, The housing includes a frame fixedly connected between two fixed side plates, and a light shield fixedly connected to the periphery and upper end of the frame. The camera module is connected to the upper end of the frame, and the light source module is connected to the lower end of the frame and located below the feed conveyor roller and the material conveyor roller. The frame has an opening at its lower end, allowing the camera module to capture images of the shooting area through the opening.

3. The nonwoven fabric appearance inspection device according to claim 2, characterized in that, The light source module includes a first mounting bracket connected to the frame and an LED light connected to the first mounting bracket. The first mounting bracket extends downward toward the frame so that the bottom of the first mounting bracket is lower than the feed conveyor roller and the feeding conveyor roller. The LED light is connected to the bottom of the first mounting bracket. The position of the first mounting bracket on the frame is adjustable.

4. The nonwoven fabric appearance inspection device according to claim 2, characterized in that, The camera module includes a second mounting bracket connected to the frame and a camera connected to the second mounting bracket, wherein the position of the second mounting bracket on the frame is adjustable.

5. A nonwoven fabric appearance inspection device according to any one of claims 1-4, characterized in that, A window is provided on the fixed side plate, and a baffle is hinged at the window position to open or close the window. The window position corresponds to the shooting area.

6. The nonwoven fabric appearance inspection device according to claim 1, characterized in that, The fixed side plate is connected to the support of the workbench to form an integral unit.

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