An appearance inspection device for nonwoven fabric

Abstract

The utility model discloses a kind of appearance detection devices of non-woven fabric, belong to appearance detection device technical field, including rack and detection structure, the detection structure is arranged on the rack, the detection structure is provided with two groups on the rack, two The detection structure is staggered and arranged, the rack is provided with material roll, the material roll is provided with two on the rack, two The material roll is between two The detection structure, the detection structure includes detection camera, back light bar and white linear lamp, the detection camera is arranged on the rack, the detection head of the detection camera is towards the material roll, the back light bar is arranged on the rack, the white linear lamp is arranged on the rack, the material roll is between the back light bar and the white linear lamp, the white linear lamp is between the material roll and the detection camera, the utility model has the advantage of improving the appearance detection efficiency of non-woven fabric.

Description

Technical Field

[0001] This utility model relates to the technical field of appearance inspection devices, specifically an appearance inspection device for non-woven fabrics. Background Technology

[0002] Nonwoven fabric is a non-woven material that does not undergo traditional textile processes such as spinning and weaving. Instead, it is made by directly bonding, interlacing, or thermally fusing short fibers or filaments to form a sheet or mesh structure through mechanical, chemical, or thermal methods. It resembles fabric in appearance but lacks warp and weft threads, hence the name "nonwoven fabric".

[0003] During the production of nonwoven fabrics, various defects may occur on the surface due to process or external factors, such as holes, black spots, black lines, stains, etc. In order to prevent and intercept products with abnormal problems, it is necessary to inspect the appearance of nonwoven fabrics.

[0004] Regarding the aforementioned technical conditions, the appearance inspection of nonwoven fabrics is still subject to the drawbacks of low work efficiency, limited accuracy, and risk of missed detections, which are caused by manual online visual inspection.

[0005] Based on this, the present invention designs an appearance inspection device for nonwoven fabrics to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an appearance inspection device for nonwoven fabrics to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a nonwoven fabric appearance inspection device, comprising a frame and an inspection structure. The inspection structure is disposed on the frame, and two sets of inspection structures are disposed on the frame, staggered from each other. Material rollers are disposed on the frame, with two material rollers disposed on the frame and positioned between the two inspection structures. The inspection structure includes an inspection camera, a backlight strip, and a white linear lamp. The inspection camera is disposed on the frame, with its inspection head facing the material roller. The backlight strip and the white linear lamp are disposed on the frame. The material roller is positioned between the backlight strip and the white linear lamp, and the white linear lamp is positioned between the material roller and the inspection camera.

[0008] Preferably, the white linear lamp is tilted and mounted on the frame.

[0009] Preferably, a fixing rod is fixedly installed on the frame, and a mounting block is fixedly connected to the white linear light. One end of the mounting block abuts against the fixing rod. A positioning block is connected to the fixing rod, and the fixing rod is located between the positioning block and the mounting block. Multiple positioning rods are threadedly connected to the positioning block, and the positioning rods are threadedly connected to the mounting block. The fixing rod is clamped between the positioning block and the mounting block.

[0010] Preferably, the frame is provided with auxiliary rollers, and two auxiliary rollers are provided on the frame. The detection structure includes an upper detection structure and a lower detection structure, and the lower detection structure is located between the material roller and the auxiliary rollers.

[0011] Preferably, the detection structure is connected to an electrical control cabinet, and the electrical control cabinet is connected to an industrial control computer.

[0012] Preferably, a light-shielding plate is detachably provided on the frame, and two light-shielding plates are provided on the frame, with the material roller located between the two light-shielding plates.

[0013] In summary, this application has the following beneficial technical effects: When performing appearance inspection on nonwoven fabric, the nonwoven fabric passes over two material rollers from one side of the frame and then exits the frame from the other side of the frame via auxiliary rollers. The inspection structure is then activated, and two sets of inspection structures on the frame respectively inspect the front and back sides of the nonwoven fabric. The inspection camera is controlled by an electrical control cabinet and an industrial computer to perform appearance inspection on the nonwoven fabric. The inspection camera's inspection head scans the appearance of the nonwoven fabric. Backlight strips and white linear lights provide sufficient inspection light for the inspection camera, making defects on the nonwoven fabric more obvious, facilitating scanning imaging, reducing missed defects, and improving the accuracy of defect detection. The nonwoven fabric appearance information scanned by the inspection camera is processed by the electrical control cabinet and industrial computer, displayed, and an inspection report is generated, thus improving the efficiency of nonwoven fabric appearance inspection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the connection structure between the appearance inspection device and the electrical control cabinet in this embodiment; Figure 2 This is a three-dimensional structural diagram of the appearance inspection device in this embodiment; Figure 3 This is a schematic diagram of the structure of the white linear lamp in the appearance inspection device of this embodiment; Figure 4 This is a side view of the appearance inspection device in this embodiment; Figure 5 This is a schematic diagram showing the positional relationship between the white linear lamp and the backlight strip in this embodiment.

[0016] The attached diagram lists the components represented by each number as follows: 1. Electrical control cabinet; 2. Industrial computer; 3. Inspection camera; 4. Frame; 5. Fixing rod; 6. White linear light; 7. Light shield; 8. Material roller; 9. Auxiliary roller; 10. Positioning block; 11. Mounting block; 12. Backlight strip. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0019] A nonwoven fabric appearance inspection device includes a frame 4 and inspection structures. The inspection structures are mounted on the frame 4, and two sets of inspection structures are arranged on the frame 4, staggered from each other. Material rollers 8 are mounted on the frame 4, and two material rollers 8 are arranged between the two inspection structures.

[0020] The frame 4 is equipped with two auxiliary rollers 9. The detection structure includes an upper detection structure and a lower detection structure, with the lower detection structure located between the material roller 8 and the auxiliary roller 9. The nonwoven fabric passes over the two material rollers 8 from one side of the frame 4 via the auxiliary roller 9 and then exits the frame 4 from the other side via the auxiliary roller 9.

[0021] Under the action of the two feed rollers 8, the nonwoven fabric is in a horizontal and flat state at the feed rollers 8, which facilitates the appearance inspection of the nonwoven fabric by the detection structure. The upper detection structure performs appearance inspection on the front side of the nonwoven fabric, and the lower detection structure performs appearance inspection on the back side of the nonwoven fabric. The two sets of detection structures are staggered to ensure that the detection of the front and back sides of the nonwoven fabric by the detection structures will not affect each other and affect the accuracy of the detection results.

[0022] The detection structure includes a detection camera 3, a backlight strip 12, and a white linear lamp 6. The detection camera 3 is mounted on the frame 4, with its detection head facing the material roller 8. The backlight strip 12 and the white linear lamp 6 are both mounted on the frame 4. The material roller 8 is located between the backlight strip 12 and the white linear lamp 6, and the white linear lamp 6 is located between the material roller 8 and the detection camera 3.

[0023] The inspection structure is connected to an electrical control cabinet 1, which in turn is connected to an industrial computer 2, a desktop industrial computer. Through the industrial computer 2 and the electrical control cabinet 1, the inspection camera 3 within the inspection structure can automatically acquire images in real time. Using blob and pre-processing image processing technologies, optical imaging technology is combined with algorithms to capture, process, and analyze images of the non-woven fabric's appearance. Deep learning is then used to annotate and learn the image features of various defects, enabling accurate defect classification. Real-time display of specific information such as the type and location of non-woven fabric defects is provided, along with automatic alarms. Upon completion of the inspection, a report is generated and output with a single click.

[0024] When the inspection structure performs appearance inspection on the nonwoven fabric under the control of the electrical control cabinet 1 and the industrial control computer 2, the inspection head of the inspection camera 3 scans the appearance of the nonwoven fabric. The backlight strip 12 and the white linear light 6 provide sufficient inspection light for the inspection camera 3, making the defects on the nonwoven fabric more obvious and facilitating the scanning and imaging by the inspection camera 3. The appearance information of the nonwoven fabric scanned by the inspection camera 3 is processed by the electrical control cabinet 1 and the industrial control computer 2, displayed, and an inspection report is generated.

[0025] The white linear lamp 6 is tilted on the frame 4, so that it can provide a light source without affecting the operation of the inspection camera 3, facilitating the inspection camera 3 to scan and image the non-woven fabric. A fixing rod 5 is fixedly installed on the frame 4, and a mounting block 11 is fixedly connected to the white linear lamp 6, with one end of the mounting block 11 abutting against the fixing rod 5.

[0026] The fixing rod 5 is connected to the positioning block 10, and the fixing rod 5 is located between the positioning block 10 and the mounting block 11. The positioning block 10 is threaded with multiple positioning rods, which are threaded onto the mounting block 11. Under the action of the multiple positioning rods, the fixing rod 5 is clamped between the positioning block 10 and the mounting block 11, allowing the white linear lamp 6 to be detachably mounted on the fixing rod 5. At the same time, the light source angle of the white linear lamp 6 can be adjusted according to different defects.

[0027] A light shield 7 is detachably installed on the frame 4. There are two light shields 7 on the frame 4, and the material roller 8 is between the two light shields 7. The light shields 7 play a role in blocking light and reducing the influence of external light on the scanning imaging of the inspection camera 3. At the same time, the backlight strip 12 and the white linear light 6 are more focused under the action of the light shields 7, and the light is not easy to escape, so that the inspection effect of the inspection camera 3 is better.

[0028] The implementation principle of this embodiment is as follows: When performing appearance inspection on non-woven fabric, the non-woven fabric passes over two material rollers 8 from the auxiliary roller 9 on one side of the frame 4 and then exits the frame 4 from the auxiliary roller 9 on the other side. The inspection structure is then activated, and the two sets of inspection structures on the frame 4 respectively inspect the front and back of the non-woven fabric. The inspection camera 3 is controlled by the electrical control cabinet 1 and the industrial computer 2 to perform appearance inspection on the non-woven fabric. The inspection head of the inspection camera 3 scans the appearance of the non-woven fabric. The backlight strip 12 and the white linear light 6 provide sufficient inspection light for the inspection camera 3, making defects on the non-woven fabric more obvious, facilitating scanning and imaging by the inspection camera 3, reducing missed defects, and improving the accuracy of defect detection. The appearance information of the non-woven fabric scanned by the inspection camera 3 is processed by the electrical control cabinet 1 and the industrial computer 2, displayed, and an inspection report is generated, thus improving the efficiency of non-woven fabric appearance inspection.

[0029] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nonwoven fabric appearance inspection device, characterized in that: The device includes a frame (4) and a detection structure. The detection structure is mounted on the frame (4). Two sets of detection structures are mounted on the frame (4) and are staggered. Two material rollers (8) are mounted on the frame (4) and are positioned between the two detection structures. The detection structure includes a detection camera (3), a backlight strip (12), and a white linear lamp (6). The detection camera (3) is mounted on the frame (4) with its detection head facing the material roller (8). The backlight strip (12) is mounted on the frame (4), and the white linear lamp (6) is mounted on the frame (4). The material roller (8) is positioned between the backlight strip (12) and the white linear lamp (6), and the white linear lamp (6) is positioned between the material roller (8) and the detection camera (3).

2. The nonwoven fabric appearance inspection device according to claim 1, characterized in that: The white linear lamp (6) is tilted and mounted on the frame (4).

3. The nonwoven fabric appearance inspection device according to claim 1, characterized in that: A fixing rod (5) is fixedly installed on the frame (4). The white linear light (6) is fixedly connected to a mounting block (11). One end of the mounting block (11) abuts against the fixing rod (5). The fixing rod (5) is connected to a positioning block (10). The fixing rod (5) is between the positioning block (10) and the mounting block (11). The positioning block (10) is threaded with multiple positioning rods. The positioning rods are threaded onto the mounting block (11). The fixing rod (5) is clamped between the positioning block (10) and the mounting block (11).

4. The appearance inspection device for nonwoven fabrics according to claim 1, characterized in that: The frame (4) is provided with an auxiliary roller (9), and there are two auxiliary rollers (9) on the frame (4). The detection structure includes an upper detection structure and a lower detection structure, and the lower detection structure is located between the material roller (8) and the auxiliary roller (9).

5. The nonwoven fabric appearance inspection device according to claim 1, characterized in that: The detection structure is connected to an electrical control cabinet (1), and the electrical control cabinet (1) is connected to an industrial control computer (2).

6. The appearance inspection device for nonwoven fabrics according to claim 1, characterized in that: A light-shielding plate (7) is detachably installed on the frame (4). There are two light-shielding plates (7) on the frame (4), and the material roller (8) is located between the two light-shielding plates (7).

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